diff options
| -rw-r--r-- | Makefile.am | 1 | ||||
| -rw-r--r-- | configure.ac | 11 | ||||
| -rw-r--r-- | mount-deprecated/Makemodule.am | 70 | ||||
| -rw-r--r-- | mount-deprecated/devname.c | 14 | ||||
| -rw-r--r-- | mount-deprecated/devname.h | 6 | ||||
| -rw-r--r-- | mount-deprecated/fsprobe.c | 141 | ||||
| -rw-r--r-- | mount-deprecated/fsprobe.h | 27 | ||||
| -rw-r--r-- | mount-deprecated/fstab.c | 988 | ||||
| -rw-r--r-- | mount-deprecated/fstab.h | 39 | ||||
| -rw-r--r-- | mount-deprecated/getusername.c | 14 | ||||
| -rw-r--r-- | mount-deprecated/getusername.h | 1 | ||||
| -rw-r--r-- | mount-deprecated/mount.8 | 2849 | ||||
| -rw-r--r-- | mount-deprecated/mount.c | 2625 | ||||
| -rw-r--r-- | mount-deprecated/mount_constants.h | 73 | ||||
| -rw-r--r-- | mount-deprecated/mount_mntent.c | 165 | ||||
| -rw-r--r-- | mount-deprecated/mount_mntent.h | 28 | ||||
| -rw-r--r-- | mount-deprecated/sundries.c | 286 | ||||
| -rw-r--r-- | mount-deprecated/sundries.h | 54 | ||||
| -rw-r--r-- | mount-deprecated/umount.8 | 179 | ||||
| -rw-r--r-- | mount-deprecated/umount.c | 867 | ||||
| -rw-r--r-- | tests/expected/build-sys/config-old-mount | 100 | ||||
| -rwxr-xr-x | tests/ts/mount/shared-subtree | 32 | ||||
| -rw-r--r-- | tools/config-gen.d/old-mount.conf | 3 |
23 files changed, 13 insertions, 8560 deletions
diff --git a/Makefile.am b/Makefile.am index 17f4c339d..5eb76ac95 100644 --- a/Makefile.am +++ b/Makefile.am @@ -83,7 +83,6 @@ include schedutils/Makemodule.am include text-utils/Makemodule.am include term-utils/Makemodule.am include login-utils/Makemodule.am -include mount-deprecated/Makemodule.am include sys-utils/Makemodule.am include misc-utils/Makemodule.am include disk-utils/Makemodule.am diff --git a/configure.ac b/configure.ac index 2e47bacab..59830e71f 100644 --- a/configure.ac +++ b/configure.ac @@ -791,23 +791,12 @@ UL_REQUIRES_BUILD([fdisk], [libfdisk]) AM_CONDITIONAL([BUILD_FDISK], [test "x$build_fdisk" = xyes]) -AC_ARG_ENABLE([deprecated-mount], - AS_HELP_STRING([--enable-deprecated-mount], [build old mount utilities]), - [], [enable_deprecated_mount=no] -) -UL_BUILD_INIT([deprecated_mount]) -UL_REQUIRES_LINUX([deprecated_mount]) -UL_REQUIRES_BUILD([deprecated_mount], [libblkid]) -AM_CONDITIONAL([BUILD_DEPRECATED_MOUNT], [test "x$build_deprecated_mount" = xyes]) - - AC_ARG_ENABLE([mount], AS_HELP_STRING([--disable-mount], [do not build mount(8) and umount(8)]), [], [enable_mount=check] ) UL_BUILD_INIT([mount]) UL_REQUIRES_BUILD([mount], [libmount]) -UL_CONFLICTS_BUILD([mount], [deprecated_mount], [old deprecated mount version]) AM_CONDITIONAL([BUILD_MOUNT], [test "x$build_mount" = xyes]) diff --git a/mount-deprecated/Makemodule.am b/mount-deprecated/Makemodule.am deleted file mode 100644 index ac47914fc..000000000 --- a/mount-deprecated/Makemodule.am +++ /dev/null @@ -1,70 +0,0 @@ -if BUILD_DEPRECATED_MOUNT - -mount_common_sources = \ - mount-deprecated/sundries.c \ - mount-deprecated/sundries.h \ - mount-deprecated/fstab.h \ - mount-deprecated/mount_mntent.h \ - mount-deprecated/mount_constants.h \ - mount-deprecated/getusername.h \ - mount-deprecated/fsprobe.h \ - mount-deprecated/devname.c \ - mount-deprecated/devname.h \ - mount-deprecated/fstab.c \ - mount-deprecated/getusername.c \ - mount-deprecated/mount_mntent.c \ - mount-deprecated/fsprobe.c - -# -# mount -# -bin_PROGRAMS += mount -dist_man_MANS += mount-deprecated/mount.8 -mount_SOURCES = mount-deprecated/mount.c $(mount_common_sources) -mount_CFLAGS = $(SUID_CFLAGS) $(AM_CFLAGS) -I$(ul_libblkid_incdir) -mount_LDFLAGS = $(SUID_LDFLAGS) $(AM_LDFLAGS) -mount_LDADD = $(LDADD) libblkid.la libcommon.la - -if HAVE_SELINUX -mount_LDADD += $(SELINUX_LIBS) -endif - -if HAVE_STATIC_MOUNT -bin_PROGRAMS += mount.static -mount_static_SOURCES = $(mount_SOURCES) -mount_static_CFLAGS = $(mount_CFLAGS) -mount_static_LDFLAGS = -all-static -mount_static_LDADD = $(LDADD) libblkid.la libcommon.la -if HAVE_SELINUX -mount_static_LDADD += $(SELINUX_LIBS_STATIC) -endif -endif # HAVE_STATIC_MOUNT - -# -# umount -# -bin_PROGRAMS += umount -dist_man_MANS += mount-deprecated/umount.8 -umount_SOURCES = mount-deprecated/umount.c $(mount_common_sources) -umount_CFLAGS = $(SUID_CFLAGS) $(AM_CFLAGS) -I$(ul_libblkid_incdir) -umount_LDFLAGS = $(SUID_LDFLAGS) $(AM_LDFLAGS) -umount_LDADD = $(LDADD) libblkid.la libcommon.la - -if HAVE_STATIC_UMOUNT -bin_PROGRAMS += umount.static -umount_static_SOURCES = $(umount_SOURCES) -umount_static_CFLAGS = $(umount_CFLAGS) -umount_static_LDFLAGS = -all-static -umount_static_LDADD = $(LDADD) libblkid.la libcommon.la -endif - - -if MAKEINSTALL_DO_SETUID -install-exec-hook-mount: - chmod 4755 $(DESTDIR)$(bindir)/mount - chmod 4755 $(DESTDIR)$(bindir)/umount - -INSTALL_EXEC_HOOKS += install-exec-hook-mount -endif - -endif # BUILD_DEPRECATED_MOUNT diff --git a/mount-deprecated/devname.c b/mount-deprecated/devname.c deleted file mode 100644 index 76dfe91ef..000000000 --- a/mount-deprecated/devname.c +++ /dev/null @@ -1,14 +0,0 @@ -#include "fsprobe.h" - -#include "devname.h" -#include "sundries.h" /* for xstrdup */ - -const char * -spec_to_devname(const char *spec) -{ - if (!spec) - return NULL; - if (nocanonicalize || is_pseudo_fs(spec)) - return xstrdup(spec); - return fsprobe_get_devname_by_spec(spec); -} diff --git a/mount-deprecated/devname.h b/mount-deprecated/devname.h deleted file mode 100644 index d6adeff7d..000000000 --- a/mount-deprecated/devname.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef MOUNT_DEVNAME_H -#define MOUNT_DEVNAME_H - -extern const char *spec_to_devname(const char *spec); - -#endif diff --git a/mount-deprecated/fsprobe.c b/mount-deprecated/fsprobe.c deleted file mode 100644 index 80c25669f..000000000 --- a/mount-deprecated/fsprobe.c +++ /dev/null @@ -1,141 +0,0 @@ -#include <stdio.h> -#include <string.h> -#include <fcntl.h> -#include <errno.h> -#include <unistd.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <stdlib.h> - -#include <blkid.h> - -#include "blkdev.h" -#include "canonicalize.h" -#include "pathnames.h" -#include "fsprobe.h" - -/* - * THIS IS DEPRECATED -- use blkid_evaluate_* API rather than this extra layer - */ - - -static blkid_cache blcache; -static blkid_probe blprobe; - -void -fsprobe_init(void) -{ - blcache = NULL; - blprobe = NULL; -} - -void -fsprobe_exit(void) -{ - if (blprobe) - blkid_free_probe(blprobe); - if (blcache) - blkid_put_cache(blcache); -} - -/* - * Parses NAME=value, returns -1 on parse error, 0 success. The success is also - * when the 'spec' doesn't contain name=value pair (because the spec could be - * a devname too). In particular case the pointer 'name' is set to NULL. - */ -int -fsprobe_parse_spec(const char *spec, char **name, char **value) -{ - *name = NULL; - *value = NULL; - - if (strchr(spec, '=')) - return blkid_parse_tag_string(spec, name, value); - - return 0; -} - -char * -fsprobe_get_devname_by_spec(const char *spec) -{ - return blkid_evaluate_spec(spec, &blcache); -} - -int -fsprobe_known_fstype(const char *fstype) -{ - return blkid_known_fstype(fstype); -} - - -/* returns device LABEL, UUID, FSTYPE, ... by low-level - * probing interface - */ -static char * -fsprobe_get_value(const char *name, const char *devname, int *ambi) -{ - int fd, rc; - const char *data = NULL; - - if (!devname || !name) - return NULL; - fd = open(devname, O_RDONLY); - if (fd < 0) - return NULL; - if (!blprobe) - blprobe = blkid_new_probe(); - if (!blprobe) - goto done; - if (blkid_probe_set_device(blprobe, fd, 0, 0)) - goto done; - - blkid_probe_enable_superblocks(blprobe, 1); - - blkid_probe_set_superblocks_flags(blprobe, - BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID | BLKID_SUBLKS_TYPE); - - rc = blkid_do_safeprobe(blprobe); - if (ambi) - *ambi = rc == -2 ? 1 : 0; /* ambivalent probing result */ - if (!rc) - blkid_probe_lookup_value(blprobe, name, &data, NULL); -done: - close(fd); - return data ? strdup((char *) data) : NULL; -} - -char * -fsprobe_get_label_by_devname(const char *devname) -{ - return fsprobe_get_value("LABEL", devname, NULL); -} - -char * -fsprobe_get_uuid_by_devname(const char *devname) -{ - return fsprobe_get_value("UUID", devname, NULL); -} - -char * -fsprobe_get_fstype_by_devname(const char *devname) -{ - return fsprobe_get_value("TYPE", devname, NULL); -} - -char * -fsprobe_get_fstype_by_devname_ambi(const char *devname, int *ambi) -{ - return fsprobe_get_value("TYPE", devname, ambi); -} - -char * -fsprobe_get_devname_by_uuid(const char *uuid) -{ - return blkid_evaluate_tag("UUID", uuid, &blcache); -} - -char * -fsprobe_get_devname_by_label(const char *label) -{ - return blkid_evaluate_tag("LABEL", label, &blcache); -} diff --git a/mount-deprecated/fsprobe.h b/mount-deprecated/fsprobe.h deleted file mode 100644 index d9c1dc494..000000000 --- a/mount-deprecated/fsprobe.h +++ /dev/null @@ -1,27 +0,0 @@ -#ifndef FSPROBE_H -#define FSPROBE_H -/* - * THIS IS DEPRECATED -- use blkid_evaluate_* API rather than this extra layer - * - * This is the generic interface for filesystem guessing libraries. - * Implementations are provided by - */ -extern void fsprobe_init(void); -extern void fsprobe_exit(void); - -extern int fsprobe_parse_spec(const char *spec, char **name, char **value); - -/* all routines return newly allocated string */ -extern char *fsprobe_get_devname_by_uuid(const char *uuid); -extern char *fsprobe_get_devname_by_label(const char *label); -extern char *fsprobe_get_devname_by_spec(const char *spec); - -extern char *fsprobe_get_label_by_devname(const char *devname); -extern char *fsprobe_get_uuid_by_devname(const char *devname); -extern char *fsprobe_get_fstype_by_devname(const char *devname); -extern char *fsprobe_get_fstype_by_devname_ambi(const char *devname, int *ambi); - - -extern int fsprobe_known_fstype(const char *fstype); - -#endif /* FSPROBE_H */ diff --git a/mount-deprecated/fstab.c b/mount-deprecated/fstab.c deleted file mode 100644 index 176a16b31..000000000 --- a/mount-deprecated/fstab.c +++ /dev/null @@ -1,988 +0,0 @@ -/* 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL> - * - added Native Language Support - * Sun Mar 21 1999 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> - * - fixed strerr(errno) in gettext calls - */ - -#include <unistd.h> -#include <errno.h> -#include <stdio.h> -#include <string.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <time.h> -#include <mntent.h> - -#include "mount_mntent.h" -#include "fstab.h" -#include "sundries.h" -#include "fsprobe.h" -#include "pathnames.h" -#include "nls.h" -#include "strutils.h" -#include "c.h" - -#define streq(s, t) (strcmp ((s), (t)) == 0) - -/* Information about mtab. ------------------------------------*/ -static int have_mtab_info = 0; -static int var_mtab_does_not_exist = 0; -static int var_mtab_is_a_symlink = 0; - -static void -get_mtab_info(void) { - if (!have_mtab_info) { - struct stat mtab_stat; - - var_mtab_does_not_exist = 0; - var_mtab_is_a_symlink = 0; - - if (lstat(_PATH_MOUNTED, &mtab_stat)) - var_mtab_does_not_exist = 1; - else if (S_ISLNK(mtab_stat.st_mode)) - var_mtab_is_a_symlink = 1; - have_mtab_info = 1; - } -} - -void -reset_mtab_info(void) { - have_mtab_info = 0; -} - -int -mtab_does_not_exist(void) { - get_mtab_info(); - return var_mtab_does_not_exist; -} - -int -mtab_is_a_symlink(void) { - get_mtab_info(); - return var_mtab_is_a_symlink; -} - -int -mtab_is_writable() { - int fd; - - /* Should we write to /etc/mtab upon an update? - Probably not if it is a symlink to /proc/mounts, since that - would create a file /proc/mounts in case the proc filesystem - is not mounted. */ - if (mtab_is_a_symlink()) - return 0; - - fd = open(_PATH_MOUNTED, O_RDWR | O_CREAT, 0644); - if (fd >= 0) { - close(fd); - return 1; - } else - return 0; -} - -/* Contents of mtab and fstab ---------------------------------*/ - -struct mntentchn mounttable, fstab; -static int got_mtab = 0; -static int got_fstab = 0; - -static void read_mounttable(void), read_fstab(void); - -struct mntentchn * -mtab_head() { - if (!got_mtab) - read_mounttable(); - return &mounttable; -} - -struct mntentchn * -fstab_head() { - if (!got_fstab) - read_fstab(); - return &fstab; -} - -static void -my_free_mc(struct mntentchn *mc) { - if (mc) { - my_free(mc->m.mnt_fsname); - my_free(mc->m.mnt_dir); - my_free(mc->m.mnt_type); - my_free(mc->m.mnt_opts); - free(mc); - } -} - - -static void -discard_mntentchn(struct mntentchn *mc0) { - struct mntentchn *mc, *mc1; - - for (mc = mc0->nxt; mc && mc != mc0; mc = mc1) { - mc1 = mc->nxt; - my_free_mc(mc); - } -} - -static void -read_mntentchn(mntFILE *mfp, const char *fnam, struct mntentchn *mc0) { - struct mntentchn *mc = mc0; - struct my_mntent *mnt; - - while ((mnt = my_getmntent(mfp)) != NULL) { - if (!streq(mnt->mnt_type, MNTTYPE_IGNORE)) { - mc->nxt = (struct mntentchn *) xmalloc(sizeof(*mc)); - mc->nxt->prev = mc; - mc = mc->nxt; - mc->m = *mnt; - mc->nxt = mc0; - } - } - mc0->prev = mc; - if (ferror(mfp->mntent_fp)) { - int errsv = errno; - error(_("warning: error reading %s: %s"), - fnam, strerror (errsv)); - mc0->nxt = mc0->prev = NULL; - } - my_endmntent(mfp); -} - -/* - * Read /etc/mtab. If that fails, try /proc/mounts. - * This produces a linked list. The list head mounttable is a dummy. - */ -static void -read_mounttable() { - mntFILE *mfp; - const char *fnam; - struct mntentchn *mc = &mounttable; - - got_mtab = 1; - mc->nxt = mc->prev = NULL; - - fnam = _PATH_MOUNTED; - mfp = my_setmntent (fnam, "r"); - if (mfp == NULL || mfp->mntent_fp == NULL) { - int errsv = errno; - fnam = _PATH_PROC_MOUNTS; - mfp = my_setmntent (fnam, "r"); - if (mfp == NULL || mfp->mntent_fp == NULL) { - error(_("warning: can't open %s: %s"), - _PATH_MOUNTED, strerror (errsv)); - return; - } - if (verbose) - printf (_("mount: could not open %s - " - "using %s instead\n"), - _PATH_MOUNTED, _PATH_PROC_MOUNTS); - } - read_mntentchn(mfp, fnam, mc); -} - -static void -read_fstab() { - mntFILE *mfp = NULL; - const char *fnam; - struct mntentchn *mc = &fstab; - - got_fstab = 1; - mc->nxt = mc->prev = NULL; - - fnam = _PATH_MNTTAB; - mfp = my_setmntent (fnam, "r"); - if (mfp == NULL || mfp->mntent_fp == NULL) { - int errsv = errno; - error(_("warning: can't open %s: %s"), - _PATH_MNTTAB, strerror (errsv)); - return; - } - read_mntentchn(mfp, fnam, mc); -} - - -/* Given the name NAME, try to find it in mtab. */ -struct mntentchn * -getmntfile (const char *name) { - struct mntentchn *mc, *mc0; - - mc0 = mtab_head(); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) - if (streq(mc->m.mnt_dir, name) || - streq(mc->m.mnt_fsname, name)) - return mc; - return NULL; -} - -/* - * Given the name NAME, and the place MCPREV we found it last time, - * try to find it in mtab. - */ -struct mntentchn * -getmntfilebackward (const char *name, struct mntentchn *mcprev) { - struct mntentchn *mc, *mc0; - - mc0 = mtab_head(); - if (!mcprev) - mcprev = mc0; - - for (mc = mcprev->prev; mc && mc != mc0; mc = mc->prev) - if (streq(mc->m.mnt_dir, name)) - return mc; - - for (mc = mcprev->prev; mc && mc != mc0; mc = mc->prev) - if (streq(mc->m.mnt_fsname, name)) - return mc; - - return NULL; -} - -/* - * Given the directory name NAME, and the place MCPREV we found it last time, - * try to find more occurrences. - */ -struct mntentchn * -getmntdirbackward (const char *name, struct mntentchn *mcprev) { - struct mntentchn *mc, *mc0; - - mc0 = mtab_head(); - if (!mcprev) - mcprev = mc0; - for (mc = mcprev->prev; mc && mc != mc0; mc = mc->prev) - if (streq(mc->m.mnt_dir, name)) - return mc; - return NULL; -} - -/* - * Given the device name NAME, and the place MCPREV we found it last time, - * try to find more occurrences. - */ -struct mntentchn * -getmntdevbackward (const char *name, struct mntentchn *mcprev) { - struct mntentchn *mc, *mc0; - - mc0 = mtab_head(); - if (!mcprev) - mcprev = mc0; - - /* canonical names in mtab */ - for (mc = mcprev->prev; mc && mc != mc0; mc = mc->prev) { - if (streq(mc->m.mnt_fsname, name)) - return mc; - } - - /* non-canonical names in mtab (this is BAD THING!) */ - for (mc = mcprev->prev; mc && mc != mc0; mc = mc->prev) { - char *cn = canonicalize(mc->m.mnt_fsname); - int res = cn ? streq(cn, name) : 0; - - free(cn); - if (res) - return mc; - } - - return NULL; -} - -/* - * Given the name NAME, check that it occurs precisely once as dir or dev. - */ -int -is_mounted_once(const char *name) { - struct mntentchn *mc, *mc0; - int ct = 0; - - mc0 = mtab_head(); - for (mc = mc0->prev; mc && mc != mc0; mc = mc->prev) - if (streq(mc->m.mnt_dir, name) || - streq(mc->m.mnt_fsname, name)) - ct++; - return (ct == 1); -} - -/* Given the name FILE, try to find the option "loop=FILE" in mtab. */ -struct mntentchn * -getmntoptfile (const char *file) { - struct mntentchn *mc, *mc0; - const char *opts, *s; - int l; - - if (!file) - return NULL; - - l = strlen(file); - - mc0 = mtab_head(); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) - if ((opts = mc->m.mnt_opts) != NULL - && (s = strstr(opts, "loop=")) - && !strncmp(s+5, file, l) - && (s == opts || s[-1] == ',') - && (s[l+5] == 0 || s[l+5] == ',')) - return mc; - return NULL; -} - -/* compares "quoted" or 'quoted' with unquoted */ -static int -streq_quoted(const char *quoted, const char *unquoted) -{ - if (*quoted == '"' || *quoted == '\'') - return !strncmp(quoted + 1, unquoted, strlen(quoted) - 2); - - return streq(quoted, unquoted); -} - -static int -has_label(const char *device, const char *label) { - const char *devlabel; - int ret; - - devlabel = fsprobe_get_label_by_devname(device); - if (!devlabel) - return 0; - - ret = streq_quoted(label, devlabel); - my_free(devlabel); - return ret; -} - -static int -has_uuid(const char *device, const char *uuid){ - const char *devuuid; - int ret; - - devuuid = fsprobe_get_uuid_by_devname(device); - if (!devuuid) - return 0; - - ret = streq_quoted(uuid, devuuid); - my_free(devuuid); - return ret; -} - -/* Find the entry (DEV,DIR) in fstab -- spec and dir must be canonicalized! */ -struct mntentchn * -getfs_by_devdir (const char *dev, const char *dir) { - struct mntentchn *mc, *mc0; - - mc0 = fstab_head(); - - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) { - int ok = 1; - - /* dir */ - if (!streq(mc->m.mnt_dir, dir)) { - char *dr = canonicalize(mc->m.mnt_dir); - ok = streq(dr, dir); - my_free(dr); - } - - /* spec */ - if (ok && !streq(mc->m.mnt_fsname, dev)) { - const char *fs = mc->m.mnt_fsname; - - if (strncmp (fs, "LABEL=", 6) == 0) { - ok = has_label(dev, fs + 6); - } else if (strncmp (fs, "UUID=", 5) == 0) { - ok = has_uuid(dev, fs + 5); - } else { - fs = canonicalize_spec(mc->m.mnt_fsname); - ok = streq_except_trailing_slash(fs, dev); - my_free(fs); - } - } - if (ok) - return mc; - } - - return NULL; -} - -/* Find the dir DIR in fstab. */ -struct mntentchn * -getfs_by_dir (const char *dir) { - struct mntentchn *mc, *mc0; - char *cdir; - - mc0 = fstab_head(); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) - if (streq(mc->m.mnt_dir, dir)) - return mc; - - cdir = canonicalize(dir); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) { - int ok = streq(mc->m.mnt_dir, cdir); - if (!ok) { - char *dr = canonicalize(mc->m.mnt_dir); - ok = dr ? streq(dr, cdir) : 0; - free(dr); - } - if (ok) { - free(cdir); - return mc; - } - } - free(cdir); - return NULL; -} - -/* Find the device SPEC in fstab. */ -struct mntentchn * -getfs_by_spec (const char *spec) { - char *name = NULL, *value = NULL, *cspec; - struct mntentchn *mc = NULL; - - if (!spec) - return NULL; - - if (fsprobe_parse_spec(spec, &name, &value) != 0) - return NULL; /* parse error */ - - if (name) { - if (!strcmp(name,"LABEL")) - mc = getfs_by_label (value); - else if (!strcmp(name,"UUID")) - mc = getfs_by_uuid (value); - - free(name); - free(value); - return mc; - } - - cspec = canonicalize_spec(spec); - mc = getfs_by_devname(cspec); - free(cspec); - - if (!mc) - /* noncanonical name like /dev/cdrom */ - mc = getfs_by_devname(spec); - - return mc; -} - -/* Find the device in fstab. */ -struct mntentchn * -getfs_by_devname (const char *devname) { - struct mntentchn *mc, *mc0; - - mc0 = fstab_head(); - - /* canonical devname in fstab */ - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) - if (streq(mc->m.mnt_fsname, devname)) - return mc; - - /* noncanonical devname in fstab */ - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) { - char *fs; - - if (strncmp(mc->m.mnt_fsname, "LABEL=", 6) == 0 || - strncmp(mc->m.mnt_fsname, "UUID=", 5) == 0) - continue; - - fs = canonicalize_spec(mc->m.mnt_fsname); - if (streq(fs, devname)) { - free(fs); - return mc; - } - free(fs); - } - - return NULL; -} - - -/* Find the uuid UUID in fstab. */ -struct mntentchn * -getfs_by_uuid (const char *uuid) { - struct mntentchn *mc, *mc0; - - mc0 = fstab_head(); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) - if (strncmp (mc->m.mnt_fsname, "UUID=", 5) == 0 - && streq_quoted(mc->m.mnt_fsname + 5, uuid)) - return mc; - return NULL; -} - -/* Find the label LABEL in fstab. */ -struct mntentchn * -getfs_by_label (const char *label) { - struct mntentchn *mc, *mc0; - - mc0 = fstab_head(); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) - if (strncmp (mc->m.mnt_fsname, "LABEL=", 6) == 0 - && streq_quoted(mc->m.mnt_fsname + 6, label)) - return mc; - return NULL; -} - -/* Updating mtab ----------------------------------------------*/ - -/* Flag for already existing lock file. */ -static int we_created_lockfile = 0; -static int lockfile_fd = -1; - -/* Flag to indicate that signals have been set up. */ -static int signals_have_been_setup = 0; - -/* Ensure that the lock is released if we are interrupted. */ -#ifndef HAVE_STRSIGNAL_DECL -extern char *strsignal(int sig); /* not always in <string.h> */ -#endif - -static void -handler (int sig) { - die(EX_USER, "%s", strsignal(sig)); -} - -static void -setlkw_timeout (int sig __attribute__ ((__unused__))) { - /* nothing, fcntl will fail anyway */ -} - -/* Remove lock file. */ -void -unlock_mtab (void) { - if (we_created_lockfile) { - close(lockfile_fd); - lockfile_fd = -1; - unlink (_PATH_MOUNTED_LOCK); - we_created_lockfile = 0; - } -} - -/* Create the lock file. - The lock file will be removed if we catch a signal or when we exit. */ -/* The old code here used flock on a lock file /etc/mtab~ and deleted - this lock file afterwards. However, as rgooch remarks, that has a - race: a second mount may be waiting on the lock and proceed as - soon as the lock file is deleted by the first mount, and immediately - afterwards a third mount comes, creates a new /etc/mtab~, applies - flock to that, and also proceeds, so that the second and third mount - now both are scribbling in /etc/mtab. - The new code uses a link() instead of a creat(), where we proceed - only if it was us that created the lock, and hence we always have - to delete the lock afterwards. Now the use of flock() is in principle - superfluous, but avoids an arbitrary sleep(). */ - -/* Where does the link point to? Obvious choices are mtab and mtab~~. - HJLu points out that the latter leads to races. Right now we use - mtab~.<pid> instead. Use 20 as upper bound for the length of %d. */ -#define MOUNTLOCK_LINKTARGET _PATH_MOUNTED_LOCK "%d" -#define MOUNTLOCK_LINKTARGET_LTH (sizeof(_PATH_MOUNTED_LOCK)+20) - -/* - * The original mount locking code has used sleep(1) between attempts and - * maximal number of attemps has been 5. - * - * There was very small number of attempts and extremely long waiting (1s) - * that is useless on machines with large number of concurret mount processes. - * - * Now we wait few thousand microseconds between attempts and we have global - * time limit (30s) rather than limit for number of attempts. The advantage - * is that this method also counts time which we spend in fcntl(F_SETLKW) and - * number of attempts is not so much restricted. - * - * -- kzak@redhat.com [2007-Mar-2007] - */ - -/* maximum seconds between first and last attempt */ -#define MOUNTLOCK_MAXTIME 30 - -/* sleep time (in microseconds, max=999999) between attempts */ -#define MOUNTLOCK_WAITTIME 5000 - -void -lock_mtab (void) { - int i; - struct timespec waittime; - struct timeval maxtime; - char linktargetfile[MOUNTLOCK_LINKTARGET_LTH]; - - if (!signals_have_been_setup) { - int sig = 0; - struct sigaction sa; - - sa.sa_handler = handler; - sa.sa_flags = 0; - sigfillset (&sa.sa_mask); - - while (sigismember (&sa.sa_mask, ++sig) != -1 - && sig != SIGCHLD) { - if (sig == SIGALRM) - sa.sa_handler = setlkw_timeout; - else - sa.sa_handler = handler; - sigaction (sig, &sa, (struct sigaction *) 0); - } - signals_have_been_setup = 1; - } - - sprintf(linktargetfile, MOUNTLOCK_LINKTARGET, getpid ()); - - i = open (linktargetfile, O_WRONLY|O_CREAT, S_IRUSR|S_IWUSR); - if (i < 0) { - int errsv = errno; - /* linktargetfile does not exist (as a file) - and we cannot create it. Read-only filesystem? - Too many files open in the system? - Filesystem full? */ - die (EX_FILEIO, _("can't create lock file %s: %s " - "(use -n flag to override)"), - linktargetfile, strerror (errsv)); - } - close(i); - - gettimeofday(&maxtime, NULL); - maxtime.tv_sec += MOUNTLOCK_MAXTIME; - - waittime.tv_sec = 0; - waittime.tv_nsec = (1000 * MOUNTLOCK_WAITTIME); - - /* Repeat until it was us who made the link */ - while (!we_created_lockfile) { - struct timeval now; - struct flock flock; - int errsv, j; - - j = link(linktargetfile, _PATH_MOUNTED_LOCK); - errsv = errno; - - if (j == 0) - we_created_lockfile = 1; - - if (j < 0 && errsv != EEXIST) { - (void) unlink(linktargetfile); - die (EX_FILEIO, _("can't link lock file %s: %s " - "(use -n flag to override)"), - _PATH_MOUNTED_LOCK, strerror (errsv)); - } - - lockfile_fd = open (_PATH_MOUNTED_LOCK, O_WRONLY); - - if (lockfile_fd < 0) { - /* Strange... Maybe the file was just deleted? */ - int errsv = errno; - gettimeofday(&now, NULL); - if (errno == ENOENT && now.tv_sec < maxtime.tv_sec) { - we_created_lockfile = 0; - continue; - } - (void) unlink(linktargetfile); - die (EX_FILEIO, _("can't open lock file %s: %s " - "(use -n flag to override)"), - _PATH_MOUNTED_LOCK, strerror (errsv)); - } - - flock.l_type = F_WRLCK; - flock.l_whence = SEEK_SET; - flock.l_start = 0; - flock.l_len = 0; - - if (j == 0) { - /* We made the link. Now claim the lock. */ - if (fcntl (lockfile_fd, F_SETLK, &flock) == -1) { - if (verbose) { - int errsv = errno; - printf(_("Can't lock lock file %s: %s\n"), - _PATH_MOUNTED_LOCK, strerror (errsv)); - } - /* proceed, since it was us who created the lockfile anyway */ - } - (void) unlink(linktargetfile); - } else { - /* Someone else made the link. Wait. */ - gettimeofday(&now, NULL); - if (now.tv_sec < maxtime.tv_sec) { - alarm(maxtime.tv_sec - now.tv_sec); - if (fcntl (lockfile_fd, F_SETLKW, &flock) == -1) { - int errsv = errno; - (void) unlink(linktargetfile); - die (EX_FILEIO, _("can't lock lock file %s: %s"), - _PATH_MOUNTED_LOCK, (errno == EINTR) ? - _("timed out") : strerror (errsv)); - } - alarm(0); - - nanosleep(&waittime, NULL); - } else { - (void) unlink(linktargetfile); - die (EX_FILEIO, _("Cannot create link %s\n" - "Perhaps there is a stale lock file?\n"), - _PATH_MOUNTED_LOCK); - } - close(lockfile_fd); - } - } -} - -/* returns whole option with name @optname from @src list */ -char * -get_option(const char *optname, const char *src, size_t *len) -{ - char *opt, *end; - size_t sz; - - if (!src) - return NULL; - - opt = strstr(src, optname); - if (!opt) - return NULL; - - end = strchr(opt, ','); - sz = end && end > opt ? (size_t) (end - opt) : strlen(opt); - - if (len) - *len = sz; - - if ((opt == src || *(opt - 1) == ',') && - (*(opt + sz) == '\0' || *(opt + sz) == ',')) - return opt; - - return NULL; -} - - /* If @list contains "user=peter" and @s is "user=", return "peter" */ -char * -get_option_value(const char *list, const char *s) -{ - const char *t; - size_t n = strlen(s); - - while (list && *list) { - if (strncmp(list, s, n) == 0) { - s = t = list + n; - while (*s && *s != ',') - s++; - return xstrndup(t, s-t); - } - while (*list && *list++ != ',') ; - } - return NULL; -} - -static int -cpy_option(const char *optname, char *dest, const char *src) -{ - char *opt; - size_t sz; - - opt = get_option(optname, src, &sz); - if (!opt) - /* the option doesn't exist */ - return 0; - - if (get_option(optname, dest, NULL)) - /* the options is already in dest */ - return 0; - - if (*dest) { - dest = dest + strlen(dest); - *dest++ = ','; /* separator */ - } - memcpy(dest, opt, sz); /* copy option */ - *(dest + sz) = '\0'; /* terminator */ - - return 1; -} - -/* Generates (and allocates) new options for remount - * - * We cannot blindly replace the old options, otherwise we will lost some - * internally generated stuff (e.g loop=). - */ -static char * -mk_remount_opts(const char *old, const char *instead) -{ - char *new; - size_t sz; - - if (old == NULL && instead == NULL) - return NULL; - if (!old) - return xstrdup(instead); - - /* max size of new options is: - * old + new + '\0' + separator (for each copied option) - */ - sz = strlen(old) + (instead ? strlen(instead) : 0) + 2; - new = xmalloc(sz); - if (instead && *instead) - strncpy(new, instead, sz); - else - *new = '\0'; - - cpy_option("loop=", new, old); - - return new; -} - -/* - * Update the mtab. - * Used by umount with null INSTEAD: remove the last DIR entry. - * Used by mount upon a remount: update option part, - * and complain if a wrong device or type was given. - * [Note that often a remount will be a rw remount of / - * where there was no entry before, and we'll have to believe - * the values given in INSTEAD.] - */ - -void -update_mtab (const char *dir, struct my_mntent *instead) { - mntFILE *mfp, *mftmp; - const char *fnam = _PATH_MOUNTED; - struct mntentchn mtabhead; /* dummy */ - struct mntentchn *mc, *mc0 = NULL, *absent = NULL; - struct stat sbuf; - int fd; - - if (mtab_does_not_exist() || !mtab_is_writable()) - return; - - lock_mtab(); - - /* having locked mtab, read it again */ - mc0 = mc = &mtabhead; - mc->nxt = mc->prev = NULL; - - mfp = my_setmntent(fnam, "r"); - if (mfp == NULL || mfp->mntent_fp == NULL) { - int errsv = errno; - error (_("cannot open %s (%s) - mtab not updated"), - fnam, strerror (errsv)); - goto leave; - } - - read_mntentchn(mfp, fnam, mc); - - /* find last occurrence of dir */ - if (dir) { - for (mc = mc0->prev; mc && mc != mc0; mc = mc->prev) - if (streq(mc->m.mnt_dir, dir)) - break; - } - if (dir && mc && mc != mc0) { - if (instead == NULL) { - /* An umount - remove entry */ - if (mc && mc != mc0) { - mc->prev->nxt = mc->nxt; - mc->nxt->prev = mc->prev; - my_free_mc(mc); - } - } else if (!strcmp(mc->m.mnt_dir, instead->mnt_dir)) { - /* A remount */ - char *opts = mk_remount_opts(mc->m.mnt_opts, - instead->mnt_opts); - my_free(mc->m.mnt_opts); - mc->m.mnt_opts = opts; - } else { - /* A move */ - my_free(mc->m.mnt_dir); - mc->m.mnt_dir = xstrdup(instead->mnt_dir); - } - } else if (instead) { - /* not found, add a new entry */ - absent = xmalloc(sizeof(*absent)); - absent->m.mnt_fsname = xstrdup(instead->mnt_fsname); - absent->m.mnt_dir = xstrdup(instead->mnt_dir); - absent->m.mnt_type = xstrdup(instead->mnt_type); - absent->m.mnt_opts = xstrdup(instead->mnt_opts); - absent->m.mnt_freq = instead->mnt_freq; - absent->m.mnt_passno = instead->mnt_passno; - absent->nxt = mc0; - if (mc0->prev != NULL) { - absent->prev = mc0->prev; - mc0->prev->nxt = absent; - } else { - absent->prev = mc0; - } - mc0->prev = absent; - if (mc0->nxt == NULL) - mc0->nxt = absent; - } - - /* write chain to mtemp */ - mftmp = my_setmntent (_PATH_MOUNTED_TMP, "w"); - if (mftmp == NULL || mftmp->mntent_fp == NULL) { - int errsv = errno; - error (_("cannot open %s (%s) - mtab not updated"), - _PATH_MOUNTED_TMP, strerror (errsv)); - goto leave; - } - - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) { - if (my_addmntent(mftmp, &(mc->m)) == 1) { - int errsv = errno; - error(_("error writing %s: %s"), - _PATH_MOUNTED_TMP, strerror (errsv)); - goto leave; - } - } - - discard_mntentchn(mc0); - mc0 = NULL; - - /* - * We have to be paranoid with write() to avoid incomplete - * /etc/mtab. Users are able to control writing by RLIMIT_FSIZE. - */ - if (fflush(mftmp->mntent_fp) != 0) { - int errsv = errno; - error (_("%s: cannot fflush changes: %s"), - _PATH_MOUNTED_TMP, strerror (errsv)); - goto leave; - } - - fd = fileno(mftmp->mntent_fp); - - /* - * It seems that better is incomplete and broken /etc/mtab that - * /etc/mtab that is writeable for non-root users. - * - * We always skip rename() when chown() and chmod() failed. - * -- kzak, 11-Oct-2007 - */ - - if (fchmod(fd, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) < 0) { - int errsv = errno; - fprintf(stderr, _("error changing mode of %s: %s\n"), - _PATH_MOUNTED_TMP, strerror (errsv)); - goto leave; - } - - /* - * If mount is setuid and some non-root user mounts sth, - * then mtab.tmp might get the group of this user. Copy uid/gid - * from the present mtab before renaming. - */ - if (stat(_PATH_MOUNTED, &sbuf) == 0) { - if (fchown(fd, sbuf.st_uid, sbuf.st_gid) < 0) { - int errsv = errno; - fprintf (stderr, _("error changing owner of %s: %s\n"), - _PATH_MOUNTED_TMP, strerror(errsv)); - goto leave; - } - } - - my_endmntent (mftmp); - - /* rename mtemp to mtab */ - if (rename (_PATH_MOUNTED_TMP, _PATH_MOUNTED) < 0) { - int errsv = errno; - fprintf(stderr, _("can't rename %s to %s: %s\n"), - _PATH_MOUNTED_TMP, _PATH_MOUNTED, strerror(errsv)); - } - - leave: - if (mc0) - discard_mntentchn(mc0); - unlink(_PATH_MOUNTED_TMP); - unlock_mtab(); -} - diff --git a/mount-deprecated/fstab.h b/mount-deprecated/fstab.h deleted file mode 100644 index 4c01fd41c..000000000 --- a/mount-deprecated/fstab.h +++ /dev/null @@ -1,39 +0,0 @@ -#ifndef MOUNT_FSTAB_H -#define MOUNT_FSTAB_H - -#include "mount_mntent.h" - -int mtab_is_writable(void); -int mtab_is_a_symlink(void); -int mtab_does_not_exist(void); -void reset_mtab_info(void); -int is_mounted_once(const char *name); - -struct mntentchn { - struct mntentchn *nxt, *prev; - struct my_mntent m; -}; - -struct mntentchn *mtab_head (void); -struct mntentchn *getmntfile (const char *name); -struct mntentchn *getmntfilebackward (const char *name, struct mntentchn *mcprev); -struct mntentchn *getmntoptfile (const char *file); -struct mntentchn *getmntdirbackward (const char *dir, struct mntentchn *mc); -struct mntentchn *getmntdevbackward (const char *dev, struct mntentchn *mc); - -struct mntentchn *fstab_head (void); -struct mntentchn *getfs_by_dir (const char *dir); -struct mntentchn *getfs_by_spec (const char *spec); -struct mntentchn *getfs_by_devname (const char *devname); -struct mntentchn *getfs_by_devdir (const char *dev, const char *dir); -struct mntentchn *getfs_by_uuid (const char *uuid); -struct mntentchn *getfs_by_label (const char *label); - -void lock_mtab (void); -void unlock_mtab (void); -void update_mtab (const char *special, struct my_mntent *with); - -char *get_option(const char *optname, const char *src, size_t *len); -char *get_option_value(const char *list, const char *s); - -#endif /* MOUNT_FSTAB_H */ diff --git a/mount-deprecated/getusername.c b/mount-deprecated/getusername.c deleted file mode 100644 index 9835768ca..000000000 --- a/mount-deprecated/getusername.c +++ /dev/null @@ -1,14 +0,0 @@ -#include <unistd.h> -#include <pwd.h> -#include <sys/types.h> -#include "getusername.h" - -char * -getusername() { - char *user = 0; - struct passwd *pw = getpwuid(getuid()); - - if (pw) - user = pw->pw_name; - return user; -} diff --git a/mount-deprecated/getusername.h b/mount-deprecated/getusername.h deleted file mode 100644 index 808ac9b88..000000000 --- a/mount-deprecated/getusername.h +++ /dev/null @@ -1 +0,0 @@ -extern char *getusername(void); diff --git a/mount-deprecated/mount.8 b/mount-deprecated/mount.8 deleted file mode 100644 index 8708fcafd..000000000 --- a/mount-deprecated/mount.8 +++ /dev/null @@ -1,2849 +0,0 @@ -.\" Copyright (c) 1996-2004 Andries Brouwer -.\" -.\" This page is somewhat derived from a page that was -.\" (c) 1980, 1989, 1991 The Regents of the University of California -.\" and had been heavily modified by Rik Faith and myself. -.\" (Probably no BSD text remains.) -.\" Fragments of text were written by Werner Almesberger, Remy Card, -.\" Stephen Tweedie and Eric Youngdale. -.\" -.\" This is free documentation; you can redistribute it and/or -.\" modify it under the terms of the GNU General Public License as -.\" published by the Free Software Foundation; either version 2 of -.\" the License, or (at your option) any later version. -.\" -.\" The GNU General Public License's references to "object code" -.\" and "executables" are to be interpreted as the output of any -.\" document formatting or typesetting system, including -.\" intermediate and printed output. -.\" -.\" This manual is distributed in the hope that it will be useful, -.\" but WITHOUT ANY WARRANTY; without even the implied warranty of -.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -.\" GNU General Public License for more details. -.\" -.\" You should have received a copy of the GNU General Public License along -.\" with this program; if not, write to the Free Software Foundation, Inc., -.\" 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -.\" -.\" 960705, aeb: version for mount-2.7g -.\" 970114, aeb: xiafs and ext are dead; romfs is new -.\" 970623, aeb: -F option -.\" 970914, reg: -s option -.\" 981111, K.Garloff: /etc/filesystems -.\" 990111, aeb: documented /sbin/mount.smbfs -.\" 990730, Yann Droneaud <lch@multimania.com>: updated page -.\" 991214, Elrond <Elrond@Wunder-Nett.org>: added some docs on devpts -.\" 010714, Michael K. Johnson <johnsonm@redhat.com> added -O -.\" 010725, Nikita Danilov <NikitaDanilov@Yahoo.COM>: reiserfs options -.\" 011124, Karl Eichwalder <ke@gnu.franken.de>: tmpfs options -.\" -.TH MOUNT 8 "December 2004" "util-linux" "System Administration" -.SH NAME -mount \- mount a filesystem -.SH SYNOPSIS -.B mount -.RB [ \-lhV ] -.LP -.BI "mount \-a -.RB [ \-fFnrsvw ] -.RB [ \-t -.IR vfstype ] -.RB [ \-O -.IR optlist ] -.LP -.B mount -.RB [ \-fnrsvw ] -.RB [ \-o -.IR option [ \fB,\fPoption ]...] -.IR device | dir -.LP -.B mount -.RB [ \-fnrsvw ] -.RB [ \-t -.IB vfstype ] -.RB [ \-o -.IR options ] -.I device dir -.SH DESCRIPTION -All files accessible in a Unix system are arranged in one big -tree, the file hierarchy, rooted at -.BR / . -These files can be spread out over several devices. The -.B mount -command serves to attach the filesystem found on some device -to the big file tree. Conversely, the -.BR umount (8) -command will detach it again. - -The standard form of the -.B mount -command, is -.RS - -.br -.BI "mount \-t" " type device dir" -.br - -.RE -This tells the kernel to attach the filesystem found on -.I device -(which is of type -.IR type ) -at the directory -.IR dir . -The previous contents (if any) and owner and mode of -.I dir -become invisible, and as long as this filesystem remains mounted, -the pathname -.I dir -refers to the root of the filesystem on -.IR device . - -If only directory or device is given, for example: -.RS - -.br -.BI "mount /dir" -.br - -.RE -then mount looks for a mountpoint and if not found then for a device in the -/etc/fstab file. - -.B The listing and help. -.RS -Three forms of invocation do not actually mount anything: -.TP -.B "mount \-h" -prints a help message -.TP -.B "mount \-V" -prints a version string -.TP -.BR "mount " [ -l "] [" "-t \fItype\fP" ] -lists all mounted filesystems (of type -.IR type ). -The option \-l adds the labels in this listing. -See below. -.RE - -.B The device indication. -.RS -Most devices are indicated by a file name (of a block special device), like -.IR /dev/sda1 , -but there are other possibilities. For example, in the case of an NFS mount, -.I device -may look like -.IR knuth.cwi.nl:/dir . -It is possible to indicate a block special device using its -volume -.B LABEL -or -.B UUID -(see the \-L and \-U options below). - -The recommended setup is to use LABEL=<label> or UUID=<uuid> tags rather than -.B /dev/disk/by-{label,uuid} -udev symlinks in the /etc/fstab file. The tags are -more readable, robust and portable. The -.BR mount (8) -command internally uses udev -symlinks, so use the symlinks in /etc/fstab has no advantage over LABEL=/UUID=. -For more details see -.BR libblkid (3). - -Note that -.BR mount (8) -uses UUIDs as strings. The UUIDs from command line or -.BR fstab (5) -are not converted to internal binary representation. The string representation -of the UUID should be based on lower case characters. - -The -.I proc -filesystem is not associated with a special device, and when -mounting it, an arbitrary keyword, such as -.I proc -can be used instead of a device specification. -(The customary choice -.I none -is less fortunate: the error message `none busy' from -.B umount -can be confusing.) -.RE - -.B The /etc/fstab, /etc/mtab and /proc/mounts files. -.RS -The file -.I /etc/fstab -(see -.BR fstab (5)), -may contain lines describing what devices are usually -mounted where, using which options. -.LP -The command -.RS -.sp -.B mount \-a -.RB [ \-t -.IR type ] -.RB [ \-O -.IR optlist ] -.sp -.RE -(usually given in a bootscript) causes all filesystems mentioned in -.I fstab -(of the proper type and/or having or not having the proper options) -to be mounted as indicated, except for those whose line contains the -.B noauto -keyword. Adding the -.B \-F -option will make mount fork, so that the -filesystems are mounted simultaneously. -.LP -When mounting a filesystem mentioned in -.IR fstab -or -.IR mtab , -it suffices to give only the device, or only the mount point. - - -The programs -.B mount -and -.B umount -maintain a list of currently mounted filesystems in the file -.IR /etc/mtab . -If no arguments are given to -.BR mount , -this list is printed. - -The -.B mount -program does not read the -.I /etc/fstab -file if -.I device -(or LABEL/UUID) and -.I dir -are specified. For example: -.RS -.sp -.B "mount /dev/foo /dir" -.sp -.RE -If you want to override mount options from -.I /etc/fstab -you have to use: -.RS -.sp -.B "mount device|dir -o <options>" -.sp -.RE -and then the mount options from command line will be appended to -the list of options from -.IR /etc/fstab . -The usual behaviour is that the last option wins if there is more duplicated -options. - -When the -.I proc -filesystem is mounted (say at -.IR /proc ), -the files -.I /etc/mtab -and -.I /proc/mounts -have very similar contents. The former has somewhat -more information, such as the mount options used, -but is not necessarily up-to-date (cf. the -.B \-n -option below). It is possible to replace -.I /etc/mtab -by a symbolic link to -.IR /proc/mounts , -and especially when you have very large numbers of mounts -things will be much faster with that symlink, -but some information is lost that way, and in particular -using the "user" option will fail. -.RE - -.B The non-superuser mounts. -.RS -Normally, only the superuser can mount filesystems. -However, when -.I fstab -contains the -.B user -option on a line, anybody can mount the corresponding system. -.LP -Thus, given a line -.RS -.sp -.B "/dev/cdrom /cd iso9660 ro,user,noauto,unhide" -.sp -.RE -any user can mount the iso9660 filesystem found on his CDROM -using the command -.RS -.sp -.B "mount /dev/cdrom" -.sp -.RE -or -.RS -.sp -.B "mount /cd" -.sp -.RE -For more details, see -.BR fstab (5). -Only the user that mounted a filesystem can unmount it again. -If any user should be able to unmount, then use -.B users -instead of -.B user -in the -.I fstab -line. -The -.B owner -option is similar to the -.B user -option, with the restriction that the user must be the owner -of the special file. This may be useful e.g. for -.I /dev/fd -if a login script makes the console user owner of this device. -The -.B group -option is similar, with the restriction that the user must be -member of the group of the special file. -.RE - - -.B The bind mounts. -.RS -.\" In fact since 2.3.99. At first the syntax was mount -t bind. -Since Linux 2.4.0 it is possible to remount part of the -file hierarchy somewhere else. The call is -.RS -.br -.B mount --bind -.I olddir newdir -.RE -or shortoption -.RS -.br -.B mount -B -.I olddir newdir -.RE -or fstab entry is: -.RS -.br -.I /olddir -.I /newdir -.B none bind -.RE - -After this call the same contents is accessible in two places. -One can also remount a single file (on a single file). It's also -possible to use the bind mount to create a mountpoint from a regular -directory, for example: - -.RS -.br -.B mount --bind -.I foo foo -.RE - -The bind mount call attaches only (part of) a single filesystem, not possible -submounts. The entire file hierarchy including submounts is attached -a second place using - -.RS -.br -.B mount --rbind -.I olddir newdir -.RE - -or shortoption - -.RS -.br -.B mount -R -.I olddir newdir -.RE -.\" available since Linux 2.4.11. - -Note that the filesystem mount options will remain the same as those -on the original mount point, and cannot be changed by passing the -o -option along with --bind/--rbind. The mount options can be -changed by a separate remount command, for example: - -.RS -.br -.B mount --bind -.I olddir newdir -.br -.B mount -o remount,ro -.I newdir -.RE - -Note that behavior of the remount operation depends on the /etc/mtab file. The -first command stores the 'bind' flag to the /etc/mtab file and the second -command reads the flag from the file. If you have a system without the -/etc/mtab file or if you explicitly define source and target for the remount -command (then mount(8) does not read /etc/mtab), then you have to use bind flag -(or option) for the remount command too. For example: - -.RS -.br -.B mount --bind -.I olddir newdir -.br -.B mount -o remount,ro,bind -.I olddir newdir -.RE -.RE - -.B The move operation. -.RS -Since Linux 2.5.1 it is possible to atomically move a -.B mounted tree -to another place. The call is -.RS -.br -.B mount --move -.I olddir newdir -.RE -or shortoption -.RS -.br -.B mount -M -.I olddir newdir -.RE -This will cause the contents which previously appeared under olddir to be -accessed under newdir. The physical location of the files is not changed. -Note that the -.I olddir -has to be a mountpoint. -.RE - -.B The shared subtrees operations. -.RS -Since Linux 2.6.15 it is possible to mark a mount and its submounts as shared, -private, slave or unbindable. A shared mount provides ability to create mirrors -of that mount such that mounts and umounts within any of the mirrors propagate -to the other mirror. A slave mount receives propagation from its master, but -any not vice-versa. A private mount carries no propagation abilities. A -unbindable mount is a private mount which cannot be cloned through a bind -operation. Detailed semantics is documented in Documentation/filesystems/sharedsubtree.txt -file in the kernel source tree. - -.RS -.nf -.BI "mount --make-shared " mountpoint -.BI "mount --make-slave " mountpoint -.BI "mount --make-private " mountpoint -.BI "mount --make-unbindable " mountpoint -.fi -.RE - -The following commands allows one to recursively change the type of all the -mounts under a given mountpoint. - -.RS -.nf -.BI "mount --make-rshared " mountpoint -.BI "mount --make-rslave " mountpoint -.BI "mount --make-rprivate " mountpoint -.BI "mount --make-runbindable " mountpoint -.fi -.RE -.RE - -.SH COMMAND LINE OPTIONS -The full set of mount options used by an invocation of -.B mount -is determined by first extracting the -mount options for the filesystem from the -.I fstab -table, then applying any options specified by the -.B \-o -argument, and finally applying a -.BR \-r " or " \-w -option, when present. - -Command line options available for the -.B mount -command: -.IP "\fB\-V, \-\-version\fP" -Display version information and exit. -.IP "\fB\-h, \-\-help\fP" -Display help text and exit. -.IP "\fB\-v, \-\-verbose\fP" -Verbose mode. -.IP "\fB\-a, \-\-all\fP" -Mount all filesystems (of the given types) mentioned in -.IR fstab . -.IP "\fB\-F, \-\-fork\fP" -(Used in conjunction with -.BR \-a .) -Fork off a new incarnation of mount for each device. -This will do the mounts on different devices or different NFS servers -in parallel. -This has the advantage that it is faster; also NFS timeouts go in -parallel. A disadvantage is that the mounts are done in undefined order. -Thus, you cannot use this option if you want to mount both -.I /usr -and -.IR /usr/spool . -.IP "\fB\-f, \-\-fake\fP" -Causes everything to be done except for the actual system call; if it's not -obvious, this ``fakes'' mounting the filesystem. This option is useful in -conjunction with the -.B \-v -flag to determine what the -.B mount -command is trying to do. It can also be used to add entries for devices -that were mounted earlier with the -n option. The -f option checks for -existing record in /etc/mtab and fails when the record already -exists (with regular non-fake mount, this check is done by kernel). -.IP "\fB\-i, \-\-internal\-only\fP" -Don't call the /sbin/mount.<filesystem> helper even if it exists. -.IP "\fB\-l\fP" -Add the labels in the mount output. Mount must have -permission to read the disk device (e.g. be suid root) for this to work. -One can set such a label for ext2, ext3 or ext4 using the -.BR e2label (8) -utility, or for XFS using -.BR xfs_admin (8), -or for reiserfs using -.BR reiserfstune (8). -.IP "\fB\-n, \-\-no\-mtab\fP" -Mount without writing in -.IR /etc/mtab . -This is necessary for example when -.I /etc -is on a read-only filesystem. -.IP "\fB\-\-no\-canonicalize\fP" -Don't canonicalize paths. The mount command canonicalizes all paths -(from command line or fstab) and stores canonicalized paths to the -.IR /etc/mtab -file. This option can be used together with the -.B \-f -flag for already canonicalized absolute paths. -.IP "\fB\-s\fP" -Tolerate sloppy mount options rather than failing. This will ignore -mount options not supported by a filesystem type. Not all filesystems -support this option. This option exists for support of the Linux -autofs\-based automounter. -.IP "\fB\-r, \-\-read\-only\fP" -Mount the filesystem read-only. A synonym is -.BR "\-o ro" . - -Note that, depending on the filesystem type, state and kernel behavior, the -system may still write to the device. For example, Ext3 or ext4 will replay its -journal if the filesystem is dirty. To prevent this kind of write access, you -may want to mount ext3 or ext4 filesystem with "ro,noload" mount options or -set the block device to read-only mode, see command -.BR blockdev (8). -.IP "\fB\-w, \-\-rw\fP" -Mount the filesystem read/write. This is the default. A synonym is -.BR "\-o rw" . -.IP "\fB\-L \fIlabel\fP" -Mount the partition that has the specified -.IR label . -.IP "\fB\-U \fIuuid\fP" -Mount the partition that has the specified -.IR uuid . -These two options require the file -.I /proc/partitions -(present since Linux 2.1.116) to exist. -.IP "\fB\-t, \-\-types \fIvfstype\fP" -The argument following the -.B \-t -is used to indicate the filesystem type. The filesystem types which are -currently supported include: -.IR adfs , -.IR affs , -.IR autofs , -.IR cifs , -.IR coda , -.IR coherent , -.IR cramfs , -.IR debugfs , -.IR devpts , -.IR efs , -.IR ext , -.IR ext2 , -.IR ext3 , -.IR ext4 , -.IR hfs , -.IR hfsplus , -.IR hpfs , -.IR iso9660 , -.IR jfs , -.IR minix , -.IR msdos , -.IR ncpfs , -.IR nfs , -.IR nfs4 , -.IR ntfs , -.IR proc , -.IR qnx4 , -.IR ramfs , -.IR reiserfs , -.IR romfs , -.IR squashfs , -.IR smbfs , -.IR sysv , -.IR tmpfs , -.IR ubifs , -.IR udf , -.IR ufs , -.IR umsdos , -.IR usbfs , -.IR vfat , -.IR xenix , -.IR xfs , -.IR xiafs . -Note that coherent, sysv and xenix are equivalent and that -.I xenix -and -.I coherent -will be removed at some point in the future \(em use -.I sysv -instead. Since kernel version 2.1.21 the types -.I ext -and -.I xiafs -do not exist anymore. Earlier, -.I usbfs -was known as -.IR usbdevfs . -Note, the real list of all supported filesystems depends on your -kernel. - -The programs -.B mount -and -.B umount -support filesystem subtypes. The subtype is defined by '.subtype' suffix. For -example 'fuse.sshfs'. It's recommended to use subtype notation rather than add -any prefix to the mount source (for example 'sshfs#example.com' is -depreacated). - -For most types all the -.B mount -program has to do is issue a simple -.IR mount (2) -system call, and no detailed knowledge of the filesystem type is required. -For a few types however (like nfs, nfs4, cifs, smbfs, ncpfs) ad hoc code is -necessary. The nfs, nfs4, cifs, smbfs, and ncpfs filesystems -have a separate mount program. In order to make it possible to -treat all types in a uniform way, mount will execute the program -.BI /sbin/mount. TYPE -(if that exists) when called with type -.IR TYPE . -Since various versions of the -.B smbmount -program have different calling conventions, -.B /sbin/mount.smbfs -may have to be a shell script that sets up the desired call. - -If no -.B \-t -option is given, or if the -.B auto -type is specified, mount will try to guess the desired type. -Mount uses the blkid library for guessing the filesystem -type; if that does not turn up anything that looks familiar, -mount will try to read the file -.IR /etc/filesystems , -or, if that does not exist, -.IR /proc/filesystems . -All of the filesystem types listed there will be tried, -except for those that are labeled "nodev" (e.g., -.IR devpts , -.I proc -and -.IR nfs ). -If -.I /etc/filesystems -ends in a line with a single * only, mount will read -.I /proc/filesystems -afterwards. - -The -.B auto -type may be useful for user-mounted floppies. -Creating a file -.I /etc/filesystems -can be useful to change the probe order (e.g., to try vfat before msdos -or ext3 before ext2) or if you use a kernel module autoloader. - -More than one type may be specified in a comma separated -list. The list of filesystem types can be prefixed with -.B no -to specify the filesystem types on which no action should be taken. -(This can be meaningful with the -.B \-a -option.) For example, the command: -.RS -.RS -.sp -.B "mount \-a \-t nomsdos,ext" -.sp -.RE -mounts all filesystems except those of type -.I msdos -and -.IR ext . -.RE -.IP "\fB\-O, \-\-test-opts \fIopts\fP" -Used in conjunction with -.BR \-a , -to limit the set of filesystems to which the -.B \-a -is applied. Like -.B \-t -in this regard except that it is useless except in the context of -.BR \-a . -For example, the command: -.RS -.RS -.sp -.B "mount \-a \-O no_netdev" -.sp -.RE -mounts all filesystems except those which have the option -.I _netdev -specified in the options field in the -.I /etc/fstab -file. - -It is different from -.B \-t -in that each option is matched exactly; a leading -.B no -at the beginning of one option does not negate the rest. - -The -.B \-t -and -.B \-O -options are cumulative in effect; that is, the command -.RS -.sp -.B "mount \-a \-t ext2 \-O _netdev" -.sp -.RE -mounts all ext2 filesystems with the _netdev option, not all filesystems -that are either ext2 or have the _netdev option specified. -.RE -.IP "\fB\-o, \-\-options \fIopts\fP" -Options are specified with a -.B \-o -flag followed by a comma separated string of options. For example: -.RS -.RS -.sp -.B "mount LABEL=mydisk \-o noatime,nouser" -.sp -.RE - -For more details, see -.B FILESYSTEM INDEPENDENT MOUNT OPTIONS -and -.B FILESYSTEM SPECIFIC MOUNT OPTIONS -sections. -.RE -.IP "\fB\-B, \-\-bind\fP" -Remount a subtree somewhere else (so that its contents are available -in both places). See above. -.IP "\fB\-R, \-\-rbind\fP" -Remount a subtree and all possible submounts somewhere else (so that its -contents are available in both places). See above. -.IP "\fB\-M, \-\-move\fP" -Move a subtree to some other place. See above. - -.SH FILESYSTEM INDEPENDENT MOUNT OPTIONS -Some of these options are only useful when they appear in the -.I /etc/fstab -file. - -Some of these options could be enabled or disabled by default -in the system kernel. To check the current setting see the options -in /proc/mounts. - -The following options apply to any filesystem that is being -mounted (but not every filesystem actually honors them - e.g., the -.B sync -option today has effect only for ext2, ext3, fat, vfat and ufs): - -.TP -.B async -All I/O to the filesystem should be done asynchronously. (See also the -.B sync -option.) -.TP -.B atime -Do not use noatime feature, then the inode access time is controlled by kernel -defaults. See also the description for -.B strictatime -and -.B relatime -mount options. -.TP -.B noatime -Do not update inode access times on this filesystem (e.g., for faster -access on the news spool to speed up news servers). -.TP -.B auto -Can be mounted with the -.B \-a -option. -.TP -.B noauto -Can only be mounted explicitly (i.e., the -.B \-a -option will not cause the filesystem to be mounted). -.TP -\fBcontext=\fP\fIcontext\fP, \fBfscontext=\fP\fIcontext\fP, \fBdefcontext=\fP\fIcontext\fP and \fBrootcontext=\fP\fIcontext\fP -The -.BR context= -option is useful when mounting filesystems that do not support -extended attributes, such as a floppy or hard disk formatted with VFAT, or -systems that are not normally running under SELinux, such as an ext3 formatted -disk from a non-SELinux workstation. You can also use -.BR context= -on filesystems you do not trust, such as a floppy. It also helps in compatibility with -xattr-supporting filesystems on earlier 2.4.<x> kernel versions. Even where -xattrs are supported, you can save time not having to label every file by -assigning the entire disk one security context. - -A commonly used option for removable media is -.BR context="system_u:object_r:removable_t" . - -Two other options are -.BR fscontext= -and -.BR defcontext= , -both of which are mutually exclusive of the context option. This means you -can use fscontext and defcontext with each other, but neither can be used with -context. - -The -.BR fscontext= -option works for all filesystems, regardless of their xattr -support. The fscontext option sets the overarching filesystem label to a -specific security context. This filesystem label is separate from the -individual labels on the files. It represents the entire filesystem for -certain kinds of permission checks, such as during mount or file creation. -Individual file labels are still obtained from the xattrs on the files -themselves. The context option actually sets the aggregate context that -fscontext provides, in addition to supplying the same label for individual -files. - -You can set the default security context for unlabeled files using -.BR defcontext= -option. This overrides the value set for unlabeled files in the policy and requires a -filesystem that supports xattr labeling. - -The -.BR rootcontext= -option allows you to explicitly label the root inode of a FS being mounted -before that FS or inode because visible to userspace. This was found to be -useful for things like stateless linux. - -Note that kernel rejects any remount request that includes the context -option even if unchanged from the current context. - -.B Warning that \fIcontext\fP value might contains comma -and in this case the value has to be properly quoted otherwise -.BR mount (8) -will interpret the comma as separator between mount options. Don't forget that -shell strips off quotes and -.BR "double quoting is required" , -for example: -.RS -.RS -.sp -mount -t tmpfs none /mnt \-o 'context="system_u:object_r:tmp_t:s0:c127,c456",noexec' -.sp -.RE - -For more details, see -.BR selinux (8) -.RE - -.TP -.B defaults -Use default options: -.BR rw ", " suid ", " dev ", " exec ", " auto ", " nouser ", and " async. -.TP -.B dev -Interpret character or block special devices on the filesystem. -.TP -.B nodev -Do not interpret character or block special devices on the file -system. -.TP -.B diratime -Update directory inode access times on this filesystem. This is the default. -.TP -.B nodiratime -Do not update directory inode access times on this filesystem. -.TP -.B dirsync -All directory updates within the filesystem should be done synchronously. -This affects the following system calls: creat, link, unlink, symlink, -mkdir, rmdir, mknod and rename. -.TP -.B exec -Permit execution of binaries. -.TP -.B noexec -Do not allow direct execution of any binaries on the mounted filesystem. -(Until recently it was possible to run binaries anyway using a command like -/lib/ld*.so /mnt/binary. This trick fails since Linux 2.4.25 / 2.6.0.) -.TP -.B group -Allow an ordinary (i.e., non-root) user to mount the filesystem if one -of his groups matches the group of the device. -This option implies the options -.BR nosuid " and " nodev -(unless overridden by subsequent options, as in the option line -.BR group,dev,suid ). -.TP -.B iversion -Every time the inode is modified, the i_version field will be incremented. -.TP -.B noiversion -Do not increment the i_version inode field. -.TP -.B mand -Allow mandatory locks on this filesystem. See -.BR fcntl (2). -.TP -.B nomand -Do not allow mandatory locks on this filesystem. -.TP -.B _netdev -The filesystem resides on a device that requires network access -(used to prevent the system from attempting to mount these filesystems -until the network has been enabled on the system). -.TP -.B nofail -Do not report errors for this device if it does not exist. -.TP -.B relatime -Update inode access times relative to modify or change time. Access -time is only updated if the previous access time was earlier than the -current modify or change time. (Similar to noatime, but doesn't break -mutt or other applications that need to know if a file has been read -since the last time it was modified.) - -Since Linux 2.6.30, the kernel defaults to the behavior provided by this -option (unless -.B noatime -was specified), and the -.B strictatime -option is required to obtain traditional semantics. In addition, since Linux -2.6.30, the file's last access time is always updated if it is more than 1 -day old. -.TP -.B norelatime -Do not use -.B relatime -feature. See also the -.B strictatime -mount option. -.TP -.B strictatime -Allows to explicitly requesting full atime updates. This makes it -possible for kernel to defaults to -.B relatime -or -.B noatime -but still allow userspace to override it. For more details about the default -system mount options see /proc/mounts. -.TP -.B nostrictatime -Use the kernel's default behaviour for inode access time updates. -.TP -.B suid -Allow set-user-identifier or set-group-identifier bits to take -effect. -.TP -.B nosuid -Do not allow set-user-identifier or set-group-identifier bits to take -effect. (This seems safe, but is in fact rather unsafe if you have -suidperl(1) installed.) -.TP -.B silent -Turn on the silent flag. -.TP -.B loud -Turn off the silent flag. -.TP -.B owner -Allow an ordinary (i.e., non-root) user to mount the filesystem if he -is the owner of the device. -This option implies the options -.BR nosuid " and " nodev -(unless overridden by subsequent options, as in the option line -.BR owner,dev,suid ). -.TP -.B remount -Attempt to remount an already-mounted filesystem. This is commonly -used to change the mount flags for a filesystem, especially to make a -readonly filesystem writable. It does not change device or mount point. - -The remount functionality follows the standard way how the mount command works -with options from fstab. It means the mount command doesn't read fstab (or -mtab) only when a -.IR device -and -.IR dir -are fully specified. - -.BR "mount -o remount,rw /dev/foo /dir" - -After this call all old mount options are replaced and arbitrary stuff from -fstab is ignored, except the loop= option which is internally generated and -maintained by the mount command. - -.BR "mount -o remount,rw /dir" - -After this call mount reads fstab (or mtab) and merges these options with -options from command line ( -.B -o -). -.TP -.B ro -Mount the filesystem read-only. -.TP -.B rw -Mount the filesystem read-write. -.TP -.B sync -All I/O to the filesystem should be done synchronously. In case of media with limited number of write cycles -(e.g. some flash drives) "sync" may cause life-cycle shortening. -.TP -.B user -Allow an ordinary user to mount the filesystem. -The name of the mounting user is written to mtab so that he can unmount -the filesystem again. -This option implies the options -.BR noexec ", " nosuid ", and " nodev -(unless overridden by subsequent options, as in the option line -.BR user,exec,dev,suid ). -.TP -.B nouser -Forbid an ordinary (i.e., non-root) user to mount the filesystem. -This is the default. -.TP -.B users -Allow every user to mount and unmount the filesystem. -This option implies the options -.BR noexec ", " nosuid ", and " nodev -(unless overridden by subsequent options, as in the option line -.BR users,exec,dev,suid ). - -.SH "FILESYSTEM SPECIFIC MOUNT OPTIONS" -The following options apply only to certain filesystems. -We sort them by filesystem. They all follow the -.B \-o -flag. - -What options are supported depends a bit on the running kernel. -More info may be found in the kernel source subdirectory -.IR Documentation/filesystems . - -.SH "Mount options for adfs" -.TP -\fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP -Set the owner and group of the files in the filesystem (default: uid=gid=0). -.TP -\fBownmask=\fP\fIvalue\fP and \fBothmask=\fP\fIvalue\fP -Set the permission mask for ADFS 'owner' permissions and 'other' permissions, -respectively (default: 0700 and 0077, respectively). -See also -.IR /usr/src/linux/Documentation/filesystems/adfs.txt . -.SH "Mount options for affs" -.TP -\fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP -Set the owner and group of the root of the filesystem (default: uid=gid=0, -but with option -.B uid -or -.B gid -without specified value, the uid and gid of the current process are taken). -.TP -\fBsetuid=\fP\fIvalue\fP and \fBsetgid=\fP\fIvalue\fP -Set the owner and group of all files. -.TP -.BI mode= value -Set the mode of all files to -.IR value " & 0777" -disregarding the original permissions. -Add search permission to directories that have read permission. -The value is given in octal. -.TP -.B protect -Do not allow any changes to the protection bits on the filesystem. -.TP -.B usemp -Set uid and gid of the root of the filesystem to the uid and gid -of the mount point upon the first sync or umount, and then -clear this option. Strange... -.TP -.B verbose -Print an informational message for each successful mount. -.TP -.BI prefix= string -Prefix used before volume name, when following a link. -.TP -.BI volume= string -Prefix (of length at most 30) used before '/' when following a symbolic link. -.TP -.BI reserved= value -(Default: 2.) Number of unused blocks at the start of the device. -.TP -.BI root= value -Give explicitly the location of the root block. -.TP -.BI bs= value -Give blocksize. Allowed values are 512, 1024, 2048, 4096. -.TP -.BR grpquota | noquota | quota | usrquota -These options are accepted but ignored. -(However, quota utilities may react to such strings in -.IR /etc/fstab .) - -.SH "Mount options for cifs" -See the options section of the -.BR mount.cifs (8) -man page (cifs-utils package must be installed). - -.SH "Mount options for coherent" -None. - -.SH "Mount options for debugfs" -The debugfs filesystem is a pseudo filesystem, traditionally mounted on -.IR /sys/kernel/debug . -.\" or just /debug -.\" present since 2.6.11 -There are no mount options. - -.SH "Mount options for devpts" -The devpts filesystem is a pseudo filesystem, traditionally mounted on -.IR /dev/pts . -In order to acquire a pseudo terminal, a process opens -.IR /dev/ptmx ; -the number of the pseudo terminal is then made available to the process -and the pseudo terminal slave can be accessed as -.IR /dev/pts/ <number>. -.TP -\fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP -This sets the owner or the group of newly created PTYs to -the specified values. When nothing is specified, they will -be set to the UID and GID of the creating process. -For example, if there is a tty group with GID 5, then -.B gid=5 -will cause newly created PTYs to belong to the tty group. -.TP -.BI mode= value -Set the mode of newly created PTYs to the specified value. -The default is 0600. -A value of -.B mode=620 -and -.B gid=5 -makes "mesg y" the default on newly created PTYs. -.TP -\fBnewinstance -Create a private instance of devpts filesystem, such that -indices of ptys allocated in this new instance are -independent of indices created in other instances of devpts. - -All mounts of devpts without this -.B newinstance -option share the same set of pty indices (i.e legacy mode). -Each mount of devpts with the -.B newinstance -option has a private set of pty indices. - -This option is mainly used to support containers in the -linux kernel. It is implemented in linux kernel versions -starting with 2.6.29. Further, this mount option is valid -only if CONFIG_DEVPTS_MULTIPLE_INSTANCES is enabled in the -kernel configuration. - -To use this option effectively, -.IR /dev/ptmx -must be a symbolic link to -.IR pts/ptmx. -See -.IR Documentation/filesystems/devpts.txt -in the linux kernel source tree for details. -.TP -.BI ptmxmode= value - -Set the mode for the new -.IR ptmx -device node in the devpts filesystem. - -With the support for multiple instances of devpts (see -.B newinstance -option above), each instance has a private -.IR ptmx -node in the root of the devpts filesystem (typically -.IR /dev/pts/ptmx). - -For compatibility with older versions of the kernel, the -default mode of the new -.IR ptmx -node is 0000. -.BI ptmxmode= value -specifies a more useful mode for the -.IR ptmx -node and is highly recommended when the -.B newinstance -option is specified. - -This option is only implemented in linux kernel versions -starting with 2.6.29. Further this option is valid only if -CONFIG_DEVPTS_MULTIPLE_INSTANCES is enabled in the kernel -configuration. - -.SH "Mount options for ext" -None. -Note that the `ext' filesystem is obsolete. Don't use it. -Since Linux version 2.1.21 extfs is no longer part of the kernel source. - -.SH "Mount options for ext2" -The `ext2' filesystem is the standard Linux filesystem. -.\" Due to a kernel bug, it may be mounted with random mount options -.\" (fixed in Linux 2.0.4). -Since Linux 2.5.46, for most mount options the default -is determined by the filesystem superblock. Set them with -.BR tune2fs (8). -.TP -.BR acl | noacl -Support POSIX Access Control Lists (or not). -.\" requires CONFIG_EXT2_FS_POSIX_ACL -.TP -.BR bsddf | minixdf -Set the behaviour for the -.I statfs -system call. The -.B minixdf -behaviour is to return in the -.I f_blocks -field the total number of blocks of the filesystem, while the -.B bsddf -behaviour (which is the default) is to subtract the overhead blocks -used by the ext2 filesystem and not available for file storage. Thus -.nf - -% mount /k -o minixdf; df /k; umount /k -Filesystem 1024-blocks Used Available Capacity Mounted on -/dev/sda6 2630655 86954 2412169 3% /k -% mount /k -o bsddf; df /k; umount /k -Filesystem 1024-blocks Used Available Capacity Mounted on -/dev/sda6 2543714 13 2412169 0% /k - -.fi -(Note that this example shows that one can add command line options -to the options given in -.IR /etc/fstab .) - -.TP -.BR check=none " or " nocheck -No checking is done at mount time. This is the default. This is fast. -It is wise to invoke -.BR e2fsck (8) -every now and then, e.g. at boot time. The non-default behavior is unsupported -(check=normal and check=strict options have been removed). Note that these mount options -don't have to be supported if ext4 kernel driver is used for ext2 and ext3 filesystems. -.TP -.B debug -Print debugging info upon each (re)mount. -.TP -.BR errors= { continue | remount-ro | panic } -Define the behaviour when an error is encountered. -(Either ignore errors and just mark the filesystem erroneous and continue, -or remount the filesystem read-only, or panic and halt the system.) -The default is set in the filesystem superblock, and can be -changed using -.BR tune2fs (8). -.TP -.BR grpid | bsdgroups " and " nogrpid | sysvgroups -These options define what group id a newly created file gets. -When -.BR grpid -is set, it takes the group id of the directory in which it is created; -otherwise (the default) it takes the fsgid of the current process, unless -the directory has the setgid bit set, in which case it takes the gid -from the parent directory, and also gets the setgid bit set -if it is a directory itself. -.TP -.BR grpquota | noquota | quota | usrquota -These options are accepted but ignored. -.TP -.BR nouid32 -Disables 32-bit UIDs and GIDs. This is for interoperability with older -kernels which only store and expect 16-bit values. -.TP -.BR oldalloc " or " orlov -Use old allocator or Orlov allocator for new inodes. Orlov is default. -.TP -\fBresgid=\fP\fIn\fP and \fBresuid=\fP\fIn\fP -The ext2 filesystem reserves a certain percentage of the available -space (by default 5%, see -.BR mke2fs (8) -and -.BR tune2fs (8)). -These options determine who can use the reserved blocks. -(Roughly: whoever has the specified uid, or belongs to the specified group.) -.TP -.BI sb= n -Instead of block 1, use block -.I n -as superblock. This could be useful when the filesystem has been damaged. -(Earlier, copies of the superblock would be made every 8192 blocks: in -block 1, 8193, 16385, ... (and one got thousands of copies on -a big filesystem). Since version 1.08, -.B mke2fs -has a \-s (sparse superblock) option to reduce the number of backup -superblocks, and since version 1.15 this is the default. Note -that this may mean that ext2 filesystems created by a recent -.B mke2fs -cannot be mounted r/w under Linux 2.0.*.) -The block number here uses 1k units. Thus, if you want to use logical -block 32768 on a filesystem with 4k blocks, use "sb=131072". -.TP -.BR user_xattr | nouser_xattr -Support "user." extended attributes (or not). -.\" requires CONFIG_EXT2_FS_XATTR - - -.SH "Mount options for ext3" -The ext3 filesystem is a version of the ext2 filesystem which has been -enhanced with journaling. It supports the same options as ext2 as -well as the following additions: -.\" .TP -.\" .BR abort -.\" Mount the filesystem in abort mode, as if a fatal error has occurred. -.TP -.BR journal=update -Update the ext3 filesystem's journal to the current format. -.TP -.BR journal=inum -When a journal already exists, this option is ignored. Otherwise, it -specifies the number of the inode which will represent the ext3 filesystem's -journal file; ext3 will create a new journal, overwriting the old contents -of the file whose inode number is -.IR inum . -.TP -.BR journal_dev=devnum -When the external journal device's major/minor numbers -have changed, this option allows the user to specify -the new journal location. The journal device is -identified through its new major/minor numbers encoded -in devnum. -.TP -.BR norecovery / noload -Don't load the journal on mounting. Note that -if the filesystem was not unmounted cleanly, -skipping the journal replay will lead to the -filesystem containing inconsistencies that can -lead to any number of problems. -.TP -.BR data= { journal | ordered | writeback } -Specifies the journaling mode for file data. Metadata is always journaled. -To use modes other than -.B ordered -on the root filesystem, pass the mode to the kernel as boot parameter, e.g. -.IR rootflags=data=journal . -.RS -.TP -.B journal -All data is committed into the journal prior to being written into the -main filesystem. -.TP -.B ordered -This is the default mode. All data is forced directly out to the main file -system prior to its metadata being committed to the journal. -.TP -.B writeback -Data ordering is not preserved - data may be written into the main -filesystem after its metadata has been committed to the journal. -This is rumoured to be the highest-throughput option. It guarantees -internal filesystem integrity, however it can allow old data to appear -in files after a crash and journal recovery. -.RE -.TP -.BR barrier=0 " / " barrier=1 " -This enables/disables barriers. barrier=0 disables it, barrier=1 enables it. -Write barriers enforce proper on-disk ordering of journal commits, making -volatile disk write caches safe to use, at some performance penalty. The ext3 -filesystem does not enable write barriers by default. Be sure to enable -barriers unless your disks are battery-backed one way or another. Otherwise -you risk filesystem corruption in case of power failure. -.TP -.BI commit= nrsec -Sync all data and metadata every -.I nrsec -seconds. The default value is 5 seconds. Zero means default. -.TP -.BR user_xattr -Enable Extended User Attributes. See the -.BR attr (5) -manual page. -.TP -.BR acl -Enable POSIX Access Control Lists. See the -.BR acl (5) -manual page. - -.SH "Mount options for ext4" -The ext4 filesystem is an advanced level of the ext3 filesystem which -incorporates scalability and reliability enhancements for supporting large -filesystem. - -The options -.B journal_dev, noload, data, commit, orlov, oldalloc, [no]user_xattr -.B [no]acl, bsddf, minixdf, debug, errors, data_err, grpid, bsdgroups, nogrpid -.B sysvgroups, resgid, resuid, sb, quota, noquota, grpquota and usrquota -are backwardly compatible with ext3 or ext2. -.TP -.BR journal_checksum -Enable checksumming of the journal transactions. This will allow the recovery -code in e2fsck and the kernel to detect corruption in the kernel. It is a -compatible change and will be ignored by older kernels. -.TP -.BR journal_async_commit -Commit block can be written to disk without waiting for descriptor blocks. If -enabled older kernels cannot mount the device. -This will enable 'journal_checksum' internally. -.TP -.BR barrier=0 " / " barrier=1 " / " barrier " / " nobarrier -This enables/disables the use of write barriers in the jbd code. barrier=0 -disables, barrier=1 enables. This also requires an IO stack which can support -barriers, and if jbd gets an error on a barrier write, it will disable again -with a warning. Write barriers enforce proper on-disk ordering of journal -commits, making volatile disk write caches safe to use, at some performance -penalty. If your disks are battery-backed in one way or another, disabling -barriers may safely improve performance. The mount options "barrier" and -"nobarrier" can also be used to enable or disable barriers, for consistency -with other ext4 mount options. - -The ext4 filesystem enables write barriers by default. -.TP -.BI inode_readahead= n -This tuning parameter controls the maximum number of inode table blocks that -ext4's inode table readahead algorithm will pre-read into the buffer cache. -The default value is 32 blocks. -.TP -.BI stripe= n -Number of filesystem blocks that mballoc will try to use for allocation size -and alignment. For RAID5/6 systems this should be the number of data disks * -RAID chunk size in filesystem blocks. -.TP -.BR delalloc -Deferring block allocation until write-out time. -.TP -.BR nodelalloc -Disable delayed allocation. Blocks are allocated when data is copied from user -to page cache. -.TP -.BI max_batch_time= usec -Maximum amount of time ext4 should wait for additional filesystem operations to -be batch together with a synchronous write operation. Since a synchronous -write operation is going to force a commit and then a wait for the I/O -complete, it doesn't cost much, and can be a huge throughput win, we wait for a -small amount of time to see if any other transactions can piggyback on the -synchronous write. The algorithm used is designed to automatically tune for -the speed of the disk, by measuring the amount of time (on average) that it -takes to finish committing a transaction. Call this time the "commit time". -If the time that the transaction has been running is less than the commit time, -ext4 will try sleeping for the commit time to see if other operations will join -the transaction. The commit time is capped by the max_batch_time, which -defaults to 15000us (15ms). This optimization can be turned off entirely by -setting max_batch_time to 0. -.TP -.BI min_batch_time= usec -This parameter sets the commit time (as described above) to be at least -min_batch_time. It defaults to zero microseconds. Increasing this parameter -may improve the throughput of multi-threaded, synchronous workloads on very -fast disks, at the cost of increasing latency. -.TP -.BI journal_ioprio= prio -The I/O priority (from 0 to 7, where 0 is the highest priority) which should be -used for I/O operations submitted by kjournald2 during a commit operation. -This defaults to 3, which is a slightly higher priority than the default I/O -priority. -.TP -.BR abort -Simulate the effects of calling ext4_abort() for -debugging purposes. This is normally used while -remounting a filesystem which is already mounted. -.TP -.BR auto_da_alloc | noauto_da_alloc -Many broken applications don't use fsync() when -replacing existing files via patterns such as - -fd = open("foo.new")/write(fd,..)/close(fd)/ rename("foo.new", "foo") - -or worse yet - -fd = open("foo", O_TRUNC)/write(fd,..)/close(fd). - -If auto_da_alloc is enabled, ext4 will detect the replace-via-rename and -replace-via-truncate patterns and force that any delayed allocation blocks are -allocated such that at the next journal commit, in the default data=ordered -mode, the data blocks of the new file are forced to disk before the rename() -operation is committed. This provides roughly the same level of guarantees as -ext3, and avoids the "zero-length" problem that can happen when a system -crashes before the delayed allocation blocks are forced to disk. -.TP -.BR discard / nodiscard -Controls whether ext4 should issue discard/TRIM commands to the underlying -block device when blocks are freed. This is useful for SSD devices and -sparse/thinly-provisioned LUNs, but it is off by default until sufficient -testing has been done. -.TP -.BR nouid32 -Disables 32-bit UIDs and GIDs. This is for -interoperability with older kernels which only -store and expect 16-bit values. -.TP -.BR resize -Allows to resize filesystem to the end of the last -existing block group, further resize has to be done -with resize2fs either online, or offline. It can be -used only with conjunction with remount. -.TP -.BR block_validity / noblock_validity -This options allows to enables/disables the in-kernel facility for tracking -filesystem metadata blocks within internal data structures. This allows multi- -block allocator and other routines to quickly locate extents which might -overlap with filesystem metadata blocks. This option is intended for debugging -purposes and since it negatively affects the performance, it is off by default. -.TP -.BR dioread_lock / dioread_nolock -Controls whether or not ext4 should use the DIO read locking. If the -dioread_nolock option is specified ext4 will allocate uninitialized extent -before buffer write and convert the extent to initialized after IO completes. -This approach allows ext4 code to avoid using inode mutex, which improves -scalability on high speed storages. However this does not work with data -journaling and dioread_nolock option will be ignored with kernel warning. -Note that dioread_nolock code path is only used for extent-based files. -Because of the restrictions this options comprises it is off by default -(e.g. dioread_lock). -.TP -.BR i_version -Enable 64-bit inode version support. This option is off by default. - -.SH "Mount options for fat" -(Note: -.I fat -is not a separate filesystem, but a common part of the -.IR msdos , -.I umsdos -and -.I vfat -filesystems.) -.TP -.BR blocksize= { 512 | 1024 | 2048 } -Set blocksize (default 512). This option is obsolete. -.TP -\fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP -Set the owner and group of all files. -(Default: the uid and gid of the current process.) -.TP -.BI umask= value -Set the umask (the bitmask of the permissions that are -.B not -present). The default is the umask of the current process. -The value is given in octal. -.TP -.BI dmask= value -Set the umask applied to directories only. -The default is the umask of the current process. -The value is given in octal. -.\" Present since Linux 2.5.43. -.TP -.BI fmask= value -Set the umask applied to regular files only. -The default is the umask of the current process. -The value is given in octal. -.\" Present since Linux 2.5.43. -.TP -.BI allow_utime= value -This option controls the permission check of mtime/atime. -.RS -.TP -.B 20 -If current process is in group of file's group ID, you can change timestamp. -.TP -.B 2 -Other users can change timestamp. -.PP -The default is set from `dmask' option. (If the directory is writable, -.BR utime (2) -is also allowed. I.e. ~dmask & 022) - -Normally -.BR utime (2) -checks current process is owner of the file, or it has -CAP_FOWNER capability. But FAT filesystem doesn't have uid/gid on disk, so -normal check is too inflexible. With this option you can relax it. -.RE -.TP -.BI check= value -Three different levels of pickyness can be chosen: -.RS -.TP -.BR r [ elaxed ] -Upper and lower case are accepted and equivalent, long name parts are -truncated (e.g. -.I verylongname.foobar -becomes -.IR verylong.foo ), -leading and embedded spaces are accepted in each name part (name and extension). -.TP -.BR n [ ormal ] -Like "relaxed", but many special characters (*, ?, <, spaces, etc.) are -rejected. This is the default. -.TP -.BR s [ trict ] -Like "normal", but names may not contain long parts and special characters -that are sometimes used on Linux, but are not accepted by MS-DOS are -rejected. (+, =, spaces, etc.) -.RE -.TP -.BI codepage= value -Sets the codepage for converting to shortname characters on FAT -and VFAT filesystems. By default, codepage 437 is used. -.TP -.BR conv= {b [ inary ]| t [ ext ]| a [ uto ]} -The -.I fat -filesystem can perform CRLF<-->NL (MS-DOS text format to UNIX text -format) conversion in the kernel. The following conversion modes are -available: -.RS -.TP -.B binary -no translation is performed. This is the default. -.TP -.B text -CRLF<-->NL translation is performed on all files. -.TP -.B auto -CRLF<-->NL translation is performed on all files that don't have a -"well-known binary" extension. The list of known extensions can be found at -the beginning of -.I fs/fat/misc.c -(as of 2.0, the list is: exe, com, bin, app, sys, drv, ovl, ovr, obj, -lib, dll, pif, arc, zip, lha, lzh, zoo, tar, z, arj, tz, taz, tzp, tpz, -gz, tgz, deb, gif, bmp, tif, gl, jpg, pcx, tfm, vf, gf, pk, pxl, dvi). -.PP -Programs that do computed lseeks won't like in-kernel text conversion. -Several people have had their data ruined by this translation. Beware! - -For filesystems mounted in binary mode, a conversion tool -(fromdos/todos) is available. This option is obsolete. -.RE -.TP -.BI cvf_format= module -Forces the driver to use the CVF (Compressed Volume File) module -.RI cvf_ module -instead of auto-detection. If the kernel supports kmod, the -cvf_format=xxx option also controls on-demand CVF module loading. -This option is obsolete. -.TP -.BI cvf_option= option -Option passed to the CVF module. This option is obsolete. -.TP -.B debug -Turn on the -.I debug -flag. A version string and a list of filesystem parameters will be -printed (these data are also printed if the parameters appear to be -inconsistent). -.TP -.BR fat= {12 | 16 | 32 } -Specify a 12, 16 or 32 bit fat. This overrides -the automatic FAT type detection routine. Use with caution! -.TP -.BI iocharset= value -Character set to use for converting between 8 bit characters -and 16 bit Unicode characters. The default is iso8859-1. -Long filenames are stored on disk in Unicode format. -.TP -.BI tz=UTC -This option disables the conversion of timestamps -between local time (as used by Windows on FAT) and UTC -(which Linux uses internally). This is particularly -useful when mounting devices (like digital cameras) -that are set to UTC in order to avoid the pitfalls of -local time. -.TP -.B quiet -Turn on the -.I quiet -flag. Attempts to chown or chmod files do not return errors, -although they fail. Use with caution! -.TP -.B showexec -If set, the execute permission bits of the file will be allowed only if -the extension part of the name is .EXE, .COM, or .BAT. Not set by default. -.TP -.B sys_immutable -If set, ATTR_SYS attribute on FAT is handled as IMMUTABLE flag on Linux. -Not set by default. -.TP -.B flush -If set, the filesystem will try to flush to disk more early than normal. -Not set by default. -.TP -.B usefree -Use the "free clusters" value stored on FSINFO. It'll -be used to determine number of free clusters without -scanning disk. But it's not used by default, because -recent Windows don't update it correctly in some -case. If you are sure the "free clusters" on FSINFO is -correct, by this option you can avoid scanning disk. -.TP -.BR dots ", " nodots ", " dotsOK= [ yes | no ] -Various misguided attempts to force Unix or DOS conventions -onto a FAT filesystem. - -.SH "Mount options for hfs" -.TP -.BI creator= cccc ", type=" cccc -Set the creator/type values as shown by the MacOS finder -used for creating new files. Default values: '????'. -.TP -.BI uid= n ", gid=" n -Set the owner and group of all files. -(Default: the uid and gid of the current process.) -.TP -.BI dir_umask= n ", file_umask=" n ", umask=" n -Set the umask used for all directories, all regular files, or all -files and directories. Defaults to the umask of the current process. -.TP -.BI session= n -Select the CDROM session to mount. -Defaults to leaving that decision to the CDROM driver. -This option will fail with anything but a CDROM as underlying device. -.TP -.BI part= n -Select partition number n from the device. -Only makes sense for CDROMs. -Defaults to not parsing the partition table at all. -.TP -.B quiet -Don't complain about invalid mount options. - -.SH "Mount options for hpfs" -.TP -\fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP -Set the owner and group of all files. (Default: the uid and gid -of the current process.) -.TP -.BI umask= value -Set the umask (the bitmask of the permissions that are -.B not -present). The default is the umask of the current process. -The value is given in octal. -.TP -.BR case= { lower | asis } -Convert all files names to lower case, or leave them. -(Default: -.BR case=lower .) -.TP -.BR conv= { binary | text | auto } -For -.BR conv=text , -delete some random CRs (in particular, all followed by NL) -when reading a file. -For -.BR conv=auto , -choose more or less at random between -.BR conv=binary " and " conv=text . -For -.BR conv=binary , -just read what is in the file. This is the default. -.TP -.B nocheck -Do not abort mounting when certain consistency checks fail. - -.SH "Mount options for iso9660" -ISO 9660 is a standard describing a filesystem structure to be used -on CD-ROMs. (This filesystem type is also seen on some DVDs. See also the -.I udf -filesystem.) - -Normal -.I iso9660 -filenames appear in a 8.3 format (i.e., DOS-like restrictions on filename -length), and in addition all characters are in upper case. Also there is -no field for file ownership, protection, number of links, provision for -block/character devices, etc. - -Rock Ridge is an extension to iso9660 that provides all of these UNIX-like -features. Basically there are extensions to each directory record that -supply all of the additional information, and when Rock Ridge is in use, -the filesystem is indistinguishable from a normal UNIX filesystem (except -that it is read-only, of course). -.TP -.B norock -Disable the use of Rock Ridge extensions, even if available. Cf.\& -.BR map . -.TP -.B nojoliet -Disable the use of Microsoft Joliet extensions, even if available. Cf.\& -.BR map . -.TP -.BR check= { r [ elaxed ]| s [ trict ]} -With -.BR check=relaxed , -a filename is first converted to lower case before doing the lookup. -This is probably only meaningful together with -.B norock -and -.BR map=normal . -(Default: -.BR check=strict .) -.TP -\fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP -Give all files in the filesystem the indicated user or group id, -possibly overriding the information found in the Rock Ridge extensions. -(Default: -.BR uid=0,gid=0 .) -.TP -.BR map= { n [ ormal ]| o [ ff ]| a [ corn ]} -For non-Rock Ridge volumes, normal name translation maps upper -to lower case ASCII, drops a trailing `;1', and converts `;' to `.'. -With -.B map=off -no name translation is done. See -.BR norock . -(Default: -.BR map=normal .) -.B map=acorn -is like -.BR map=normal -but also apply Acorn extensions if present. -.TP -.BI mode= value -For non-Rock Ridge volumes, give all files the indicated mode. -(Default: read permission for everybody.) -Since Linux 2.1.37 one no longer needs to specify the mode in -decimal. (Octal is indicated by a leading 0.) -.TP -.B unhide -Also show hidden and associated files. -(If the ordinary files and the associated or hidden files have -the same filenames, this may make the ordinary files inaccessible.) -.TP -.BR block= { 512 | 1024 | 2048 } -Set the block size to the indicated value. -(Default: -.BR block=1024 .) -.TP -.BR conv= { a [ uto ]| b [ inary ]| m [ text ]| t [ ext ]} -(Default: -.BR conv=binary .) -Since Linux 1.3.54 this option has no effect anymore. -(And non-binary settings used to be very dangerous, -possibly leading to silent data corruption.) -.TP -.B cruft -If the high byte of the file length contains other garbage, -set this mount option to ignore the high order bits of the file length. -This implies that a file cannot be larger than 16MB. -.TP -.BI session= x -Select number of session on multisession CD. (Since 2.3.4.) -.TP -.BI sbsector= xxx -Session begins from sector xxx. (Since 2.3.4.) -.LP -The following options are the same as for vfat and specifying them only makes -sense when using discs encoded using Microsoft's Joliet extensions. -.TP -.BI iocharset= value -Character set to use for converting 16 bit Unicode characters on CD -to 8 bit characters. The default is iso8859-1. -.TP -.B utf8 -Convert 16 bit Unicode characters on CD to UTF-8. - -.SH "Mount options for jfs" -.TP -.BI iocharset= name -Character set to use for converting from Unicode to ASCII. The default is -to do no conversion. Use -.B iocharset=utf8 -for UTF8 translations. This requires CONFIG_NLS_UTF8 to be set in -the kernel -.I ".config" -file. -.TP -.BI resize= value -Resize the volume to -.I value -blocks. JFS only supports growing a volume, not shrinking it. This option -is only valid during a remount, when the volume is mounted read-write. The -.B resize -keyword with no value will grow the volume to the full size of the partition. -.TP -.B nointegrity -Do not write to the journal. The primary use of this option is to allow -for higher performance when restoring a volume from backup media. The -integrity of the volume is not guaranteed if the system abnormally ends. -.TP -.B integrity -Default. Commit metadata changes to the journal. Use this option to remount -a volume where the -.B nointegrity -option was previously specified in order to restore normal behavior. -.TP -.BR errors= { continue | remount-ro | panic } -Define the behaviour when an error is encountered. -(Either ignore errors and just mark the filesystem erroneous and continue, -or remount the filesystem read-only, or panic and halt the system.) -.TP -.BR noquota | quota | usrquota | grpquota -These options are accepted but ignored. - -.SH "Mount options for minix" -None. - -.SH "Mount options for msdos" -See mount options for fat. -If the -.I msdos -filesystem detects an inconsistency, it reports an error and sets the file -system read-only. The filesystem can be made writable again by remounting -it. - -.SH "Mount options for ncpfs" -Just like -.IR nfs ", the " ncpfs -implementation expects a binary argument (a -.IR "struct ncp_mount_data" ) -to the mount system call. This argument is constructed by -.BR ncpmount (8) -and the current version of -.B mount -(2.12) does not know anything about ncpfs. - -.SH "Mount options for nfs and nfs4" -See the options section of the -.BR nfs (5) -man page (nfs-utils package must be installed). - -The -.IR nfs " and " nfs4 -implementation expects a binary argument (a -.IR "struct nfs_mount_data" ) -to the mount system call. This argument is constructed by -.BR mount.nfs (8) -and the current version of -.B mount -(2.13) does not know anything about nfs and nfs4. - -.SH "Mount options for ntfs" -.TP -.BI iocharset= name -Character set to use when returning file names. -Unlike VFAT, NTFS suppresses names that contain -nonconvertible characters. Deprecated. -.\" since 2.5.11 -.TP -.BI nls= name -New name for the option earlier called -.IR iocharset . -.\" since 2.5.11 -.TP -.BR utf8 -Use UTF-8 for converting file names. -.TP -.BR uni_xlate= { 0 | 1 | 2 } -For 0 (or `no' or `false'), do not use escape sequences -for unknown Unicode characters. -For 1 (or `yes' or `true') or 2, use vfat-style 4-byte escape sequences -starting with ":". Here 2 give a little-endian encoding -and 1 a byteswapped bigendian encoding. -.TP -.B posix=[0|1] -If enabled (posix=1), the filesystem distinguishes between -upper and lower case. The 8.3 alias names are presented as -hard links instead of being suppressed. This option is obsolete. -.TP -\fBuid=\fP\fIvalue\fP, \fBgid=\fP\fIvalue\fP and \fBumask=\fP\fIvalue\fP -Set the file permission on the filesystem. -The umask value is given in octal. -By default, the files are owned by root and not readable by somebody else. - -.SH "Mount options for proc" -.TP -\fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP -These options are recognized, but have no effect as far as I can see. - -.SH "Mount options for ramfs" -Ramfs is a memory based filesystem. Mount it and you have it. Unmount it -and it is gone. Present since Linux 2.3.99pre4. -There are no mount options. - -.SH "Mount options for reiserfs" -Reiserfs is a journaling filesystem. -.TP -.BR conv -Instructs version 3.6 reiserfs software to mount a version 3.5 filesystem, -using the 3.6 format for newly created objects. This filesystem will no -longer be compatible with reiserfs 3.5 tools. -.TP -.BR hash= { rupasov | tea | r5 | detect } -Choose which hash function reiserfs will use to find files within directories. -.RS -.TP -.B rupasov -A hash invented by Yury Yu. Rupasov. It is fast and preserves locality, -mapping lexicographically close file names to close hash values. -This option should not be used, as it causes a high probability of hash -collisions. -.TP -.B tea -A Davis-Meyer function implemented by Jeremy Fitzhardinge. -It uses hash permuting bits in the name. It gets high randomness -and, therefore, low probability of hash collisions at some CPU cost. -This may be used if EHASHCOLLISION errors are experienced with the r5 hash. -.TP -.B r5 -A modified version of the rupasov hash. It is used by default and is -the best choice unless the filesystem has huge directories and -unusual file-name patterns. -.TP -.B detect -Instructs -.IR mount -to detect which hash function is in use by examining -the filesystem being mounted, and to write this information into -the reiserfs superblock. This is only useful on the first mount of -an old format filesystem. -.RE -.TP -.BR hashed_relocation -Tunes the block allocator. This may provide performance improvements -in some situations. -.TP -.BR no_unhashed_relocation -Tunes the block allocator. This may provide performance improvements -in some situations. -.TP -.BR noborder -Disable the border allocator algorithm invented by Yury Yu. Rupasov. -This may provide performance improvements in some situations. -.TP -.BR nolog -Disable journaling. This will provide slight performance improvements in -some situations at the cost of losing reiserfs's fast recovery from crashes. -Even with this option turned on, reiserfs still performs all journaling -operations, save for actual writes into its journaling area. Implementation -of -.IR nolog -is a work in progress. -.TP -.BR notail -By default, reiserfs stores small files and `file tails' directly into its -tree. This confuses some utilities such as -.BR LILO (8). -This option is used to disable packing of files into the tree. -.TP -.BR replayonly -Replay the transactions which are in the journal, but do not actually -mount the filesystem. Mainly used by -.IR reiserfsck . -.TP -.BI resize= number -A remount option which permits online expansion of reiserfs partitions. -Instructs reiserfs to assume that the device has -.I number -blocks. -This option is designed for use with devices which are under logical -volume management (LVM). -There is a special -.I resizer -utility which can be obtained from -.IR ftp://ftp.namesys.com/pub/reiserfsprogs . -.TP -.BR user_xattr -Enable Extended User Attributes. See the -.BR attr (5) -manual page. -.TP -.BR acl -Enable POSIX Access Control Lists. See the -.BR acl (5) -manual page. -.TP -.BR barrier=none " / " barrier=flush " -This enables/disables the use of write barriers in the journaling code. -barrier=none disables it, barrier=flush enables it. Write barriers enforce -proper on-disk ordering of journal commits, making volatile disk write caches -safe to use, at some performance penalty. The reiserfs filesystem does not -enable write barriers by default. Be sure to enable barriers unless your disks -are battery-backed one way or another. Otherwise you risk filesystem -corruption in case of power failure. - -.SH "Mount options for romfs" -None. - -.SH "Mount options for squashfs" -None. - -.SH "Mount options for smbfs" -Just like -.IR nfs ", the " smbfs -implementation expects a binary argument (a -.IR "struct smb_mount_data" ) -to the mount system call. This argument is constructed by -.BR smbmount (8) -and the current version of -.B mount -(2.12) does not know anything about smbfs. - -.SH "Mount options for sysv" -None. - -.SH "Mount options for tmpfs" -.TP -.BI size= nbytes -Override default maximum size of the filesystem. -The size is given in bytes, and rounded up to entire pages. -The default is half of the memory. The size parameter also accepts a suffix % -to limit this tmpfs instance to that percentage of your physical RAM: -the default, when neither size nor nr_blocks is specified, is size=50% -.TP -.B nr_blocks= -The same as size, but in blocks of PAGE_CACHE_SIZE -.TP -.B nr_inodes= -The maximum number of inodes for this instance. The default -is half of the number of your physical RAM pages, or (on a -machine with highmem) the number of lowmem RAM pages, -whichever is the lower. -.PP -The tmpfs mount options for sizing ( -.BR size , -.BR nr_blocks , -and -.BR nr_inodes ) -accept a suffix -.BR k , -.B m -or -.B g -for Ki, Mi, Gi (binary kilo, mega and giga) and can be changed on remount. - -.TP -.B mode= -Set initial permissions of the root directory. -.TP -.B uid= -The user id. -.TP -.B gid= -The group id. -.TP -.B mpol=[default|prefer:Node|bind:NodeList|interleave|interleave:NodeList] -Set the NUMA memory allocation policy for all files in that -instance (if the kernel CONFIG_NUMA is enabled) - which can be adjusted on the -fly via 'mount -o remount ...' -.RS -.TP -.B default -prefers to allocate memory from the local node -.TP -.B prefer:Node -prefers to allocate memory from the given Node -.TP -.B bind:NodeList -allocates memory only from nodes in NodeList -.TP -.B interleave -prefers to allocate from each node in turn -.TP -.B interleave:NodeList -allocates from each node of NodeList in turn. -.PP -The NodeList format is a comma-separated list of decimal numbers and ranges, a -range being two hyphen-separated decimal numbers, the smallest and largest node -numbers in the range. For example, mpol=bind:0-3,5,7,9-15 - -Note that trying to mount a tmpfs with an mpol option will fail if the -running kernel does not support NUMA; and will fail if its nodelist -specifies a node which is not online. If your system relies on that -tmpfs being mounted, but from time to time runs a kernel built without -NUMA capability (perhaps a safe recovery kernel), or with fewer nodes -online, then it is advisable to omit the mpol option from automatic -mount options. It can be added later, when the tmpfs is already mounted -on MountPoint, by 'mount -o remount,mpol=Policy:NodeList MountPoint'. - -.SH "Mount options for ubifs" -UBIFS is a flash file system which works on top of UBI volumes. Note that -.B -atime -is not supported and is always turned off. -.TP -The device name may be specified as -.RS -.B ubiX_Y -UBI device number -.BR X , -volume number -.B Y -.TP -.B ubiY -UBI device number -.BR 0 , -volume number -.B Y -.TP -.B ubiX:NAME -UBI device number -.BR X , -volume with name -.B NAME -.TP -.B ubi:NAME -UBI device number -.BR 0 , -volume with name -.B NAME -.RE -Alternative -.B ! -separator may be used instead of -.BR : . -.TP -The following mount options are available: -.TP -.BR bulk_read -Enable bulk-read. VFS read-ahead is disabled because it slows down the file -system. Bulk-Read is an internal optimization. Some flashes may read faster if -the data are read at one go, rather than at several read requests. For -example, OneNAND can do "read-while-load" if it reads more than one NAND page. -.TP -.BR no_bulk_read -Do not bulk-read. This is the default. -.TP -.BR chk_data_crc -Check data CRC-32 checksums. This is the default. -.TP -.BR no_chk_data_crc. -Do not check data CRC-32 checksums. With this option, the filesystem does not -check CRC-32 checksum for data, but it does check it for the internal indexing -information. This option only affects reading, not writing. CRC-32 is always -calculated when writing the data. -.TP -.BR compr= { none | lzo | zlib } -Select the default compressor which is used when new files are written. It is -still possible to read compressed files if mounted with the -.B none -option. - -.SH "Mount options for udf" -udf is the "Universal Disk Format" filesystem defined by the Optical -Storage Technology Association, and is often used for DVD-ROM. -See also -.IR iso9660 . -.TP -.B gid= -Set the default group. -.TP -.B umask= -Set the default umask. -The value is given in octal. -.TP -.B uid= -Set the default user. -.TP -.B unhide -Show otherwise hidden files. -.TP -.B undelete -Show deleted files in lists. -.TP -.B nostrict -Unset strict conformance. -.\" .TP -.\" .B utf8 -.\" (unused). -.TP -.B iocharset -Set the NLS character set. -.TP -.B bs= -Set the block size. (May not work unless 2048.) -.TP -.B novrs -Skip volume sequence recognition. -.TP -.B session= -Set the CDROM session counting from 0. Default: last session. -.TP -.B anchor= -Override standard anchor location. Default: 256. -.TP -.B volume= -Override the VolumeDesc location. (unused) -.TP -.B partition= -Override the PartitionDesc location. (unused) -.TP -.B lastblock= -Set the last block of the filesystem. -.TP -.B fileset= -Override the fileset block location. (unused) -.TP -.B rootdir= -Override the root directory location. (unused) - -.SH "Mount options for ufs" -.TP -.BI ufstype= value -UFS is a filesystem widely used in different operating systems. -The problem are differences among implementations. Features of some -implementations are undocumented, so its hard to recognize the -type of ufs automatically. -That's why the user must specify the type of ufs by mount option. -Possible values are: -.RS -.TP -.B old -Old format of ufs, this is the default, read only. -(Don't forget to give the \-r option.) -.TP -.B 44bsd -For filesystems created by a BSD-like system (NetBSD,FreeBSD,OpenBSD). -.TP -.B ufs2 -Used in FreeBSD 5.x supported as read-write. -.TP -.B 5xbsd -Synonym for ufs2. -.TP -.B sun -For filesystems created by SunOS or Solaris on Sparc. -.TP -.B sunx86 -For filesystems created by Solaris on x86. -.TP -.B hp -For filesystems created by HP-UX, read-only. -.TP -.B nextstep -For filesystems created by NeXTStep (on NeXT station) (currently read only). -.TP -.B nextstep-cd -For NextStep CDROMs (block_size == 2048), read-only. -.TP -.B openstep -For filesystems created by OpenStep (currently read only). -The same filesystem type is also used by Mac OS X. -.RE - -.TP -.BI onerror= value -Set behaviour on error: -.RS -.TP -.B panic -If an error is encountered, cause a kernel panic. -.TP -.RB [ lock | umount | repair ] -These mount options don't do anything at present; -when an error is encountered only a console message is printed. -.RE - -.SH "Mount options for umsdos" -See mount options for msdos. -The -.B dotsOK -option is explicitly killed by -.IR umsdos . - -.SH "Mount options for vfat" -First of all, the mount options for -.I fat -are recognized. -The -.B dotsOK -option is explicitly killed by -.IR vfat . -Furthermore, there are -.TP -.B uni_xlate -Translate unhandled Unicode characters to special escaped sequences. -This lets you backup and restore filenames that are created with any -Unicode characters. Without this option, a '?' is used when no -translation is possible. The escape character is ':' because it is -otherwise illegal on the vfat filesystem. The escape sequence -that gets used, where u is the unicode character, -is: ':', (u & 0x3f), ((u>>6) & 0x3f), (u>>12). -.TP -.B posix -Allow two files with names that only differ in case. -This option is obsolete. -.TP -.B nonumtail -First try to make a short name without sequence number, -before trying -.IR name~num.ext . -.TP -.B utf8 -UTF8 is the filesystem safe 8-bit encoding of Unicode that is used by the -console. It can be enabled for the filesystem with this option or disabled -with utf8=0, utf8=no or utf8=false. If `uni_xlate' gets set, UTF8 gets -disabled. -.TP -.BR shortname= { lower | win95 | winnt | mixed } - -Defines the behaviour for creation and display of filenames which fit into -8.3 characters. If a long name for a file exists, it will always be -preferred display. There are four modes: -: -.RS -.TP -.I lower -Force the short name to lower case upon display; store a long name when -the short name is not all upper case. -.TP -.I win95 -Force the short name to upper case upon display; store a long name when -the short name is not all upper case. -.TP -.I winnt -Display the shortname as is; store a long name when the short name is -not all lower case or all upper case. -.TP -.I mixed -Display the short name as is; store a long name when the short name is not -all upper case. This mode is the default since Linux 2.6.32. -.RE - - -.SH "Mount options for usbfs" -.TP -\fBdevuid=\fP\fIuid\fP and \fBdevgid=\fP\fIgid\fP and \fBdevmode=\fP\fImode\fP -Set the owner and group and mode of the device files in the usbfs filesystem -(default: uid=gid=0, mode=0644). The mode is given in octal. -.TP -\fBbusuid=\fP\fIuid\fP and \fBbusgid=\fP\fIgid\fP and \fBbusmode=\fP\fImode\fP -Set the owner and group and mode of the bus directories in the usbfs -filesystem (default: uid=gid=0, mode=0555). The mode is given in octal. -.TP -\fBlistuid=\fP\fIuid\fP and \fBlistgid=\fP\fIgid\fP and \fBlistmode=\fP\fImode\fP -Set the owner and group and mode of the file -.I devices -(default: uid=gid=0, mode=0444). The mode is given in octal. - -.SH "Mount options for xenix" -None. - -.SH "Mount options for xfs" -.TP -.BI allocsize= size -Sets the buffered I/O end-of-file preallocation size when -doing delayed allocation writeout (default size is 64KiB). -Valid values for this option are page size (typically 4KiB) -through to 1GiB, inclusive, in power-of-2 increments. -.TP -.BR attr2 | noattr2 -The options enable/disable (default is enabled) an "opportunistic" -improvement to be made in the way inline extended attributes are -stored on-disk. -When the new form is used for the first time (by setting or -removing extended attributes) the on-disk superblock feature -bit field will be updated to reflect this format being in use. -.TP -.B barrier -Enables the use of block layer write barriers for writes into -the journal and unwritten extent conversion. This allows for -drive level write caching to be enabled, for devices that -support write barriers. -.TP -.B dmapi -Enable the DMAPI (Data Management API) event callouts. -Use with the -.B mtpt -option. -.TP -.BR grpid | bsdgroups " and " nogrpid | sysvgroups -These options define what group ID a newly created file gets. -When grpid is set, it takes the group ID of the directory in -which it is created; otherwise (the default) it takes the fsgid -of the current process, unless the directory has the setgid bit -set, in which case it takes the gid from the parent directory, -and also gets the setgid bit set if it is a directory itself. -.TP -.BI ihashsize= value -Sets the number of hash buckets available for hashing the -in-memory inodes of the specified mount point. If a value -of zero is used, the value selected by the default algorithm -will be displayed in -.IR /proc/mounts . -.TP -.BR ikeep | noikeep -When inode clusters are emptied of inodes, keep them around -on the disk (ikeep) - this is the traditional XFS behaviour -and is still the default for now. Using the noikeep option, -inode clusters are returned to the free space pool. -.TP -.B inode64 -Indicates that XFS is allowed to create inodes at any location -in the filesystem, including those which will result in inode -numbers occupying more than 32 bits of significance. This is -provided for backwards compatibility, but causes problems for -backup applications that cannot handle large inode numbers. -.TP -.BR largeio | nolargeio -If -.B nolargeio -is specified, the optimal I/O reported in -st_blksize by -.BR stat (2) -will be as small as possible to allow user -applications to avoid inefficient read/modify/write I/O. -If -.B largeio -is specified, a filesystem that has a -.B swidth -specified -will return the -.B swidth -value (in bytes) in st_blksize. If the -filesystem does not have a -.B swidth -specified but does specify -an -.B allocsize -then -.B allocsize -(in bytes) will be returned -instead. -If neither of these two options are specified, then filesystem -will behave as if -.B nolargeio -was specified. -.TP -.BI logbufs= value -Set the number of in-memory log buffers. Valid numbers range -from 2-8 inclusive. -The default value is 8 buffers for any recent kernel. -.TP -.BI logbsize= value -Set the size of each in-memory log buffer. -Size may be specified in bytes, or in kilobytes with a "k" suffix. -Valid sizes for version 1 and version 2 logs are 16384 (16k) and -32768 (32k). Valid sizes for version 2 logs also include -65536 (64k), 131072 (128k) and 262144 (256k). -The default value for any recent kernel is 32768. -.TP -\fBlogdev=\fP\fIdevice\fP and \fBrtdev=\fP\fIdevice\fP -Use an external log (metadata journal) and/or real-time device. -An XFS filesystem has up to three parts: a data section, a log section, -and a real-time section. -The real-time section is optional, and the log section can be separate -from the data section or contained within it. -Refer to -.BR xfs (5). -.TP -.BI mtpt= mountpoint -Use with the -.B dmapi -option. The value specified here will be -included in the DMAPI mount event, and should be the path of -the actual mountpoint that is used. -.TP -.B noalign -Data allocations will not be aligned at stripe unit boundaries. -.TP -.B noatime -Access timestamps are not updated when a file is read. -.TP -.B norecovery -The filesystem will be mounted without running log recovery. -If the filesystem was not cleanly unmounted, it is likely to -be inconsistent when mounted in -.B norecovery -mode. -Some files or directories may not be accessible because of this. -Filesystems mounted -.B norecovery -must be mounted read-only or the mount will fail. -.TP -.B nouuid -Don't check for double mounted filesystems using the filesystem uuid. -This is useful to mount LVM snapshot volumes. -.TP -.B osyncisosync -Make O_SYNC writes implement true O_SYNC. WITHOUT this option, -Linux XFS behaves as if an -.B osyncisdsync -option is used, -which will make writes to files opened with the O_SYNC flag set -behave as if the O_DSYNC flag had been used instead. -This can result in better performance without compromising -data safety. -However if this option is not in effect, timestamp updates from -O_SYNC writes can be lost if the system crashes. -If timestamp updates are critical, use the -.B osyncisosync -option. -.TP -.BR uquota | usrquota | uqnoenforce | quota -User disk quota accounting enabled, and limits (optionally) -enforced. Refer to -.BR xfs_quota (8) -for further details. -.TP -.BR gquota | grpquota | gqnoenforce -Group disk quota accounting enabled and limits (optionally) -enforced. Refer to -.BR xfs_quota (8) -for further details. -.TP -.BR pquota | prjquota | pqnoenforce -Project disk quota accounting enabled and limits (optionally) -enforced. Refer to -.BR xfs_quota (8) -for further details. -.TP -\fBsunit=\fP\fIvalue\fP and \fBswidth=\fP\fIvalue\fP -Used to specify the stripe unit and width for a RAID device or a stripe -volume. -.I value -must be specified in 512-byte block units. -If this option is not specified and the filesystem was made on a stripe -volume or the stripe width or unit were specified for the RAID device at -mkfs time, then the mount system call will restore the value from the -superblock. -For filesystems that are made directly on RAID devices, these options can be -used to override the information in the superblock if the underlying disk -layout changes after the filesystem has been created. -The -.B swidth -option is required if the -.B sunit -option has been specified, -and must be a multiple of the -.B sunit -value. -.TP -.B swalloc -Data allocations will be rounded up to stripe width boundaries -when the current end of file is being extended and the file -size is larger than the stripe width size. - -.SH "Mount options for xiafs" -None. Although nothing is wrong with xiafs, it is not used much, -and is not maintained. Probably one shouldn't use it. -Since Linux version 2.1.21 xiafs is no longer part of the kernel source. - -.SH "THE LOOP DEVICE" -One further possible type is a mount via the loop device. For example, -the command -.RS -.sp -.B "mount /tmp/disk.img /mnt -t vfat -o loop=/dev/loop" -.sp -.RE -will set up the loop device -.I /dev/loop3 -to correspond to the file -.IR /tmp/disk.img , -and then mount this device on -.IR /mnt . - -If no explicit loop device is mentioned -(but just an option `\fB\-o loop\fP' is given), then -.B mount -will try to find some unused loop device and use that, for example -.RS -.sp -.B "mount /tmp/disk.img /mnt -o loop" -.sp -.RE -The mount command -.B automatically -creates a loop device from a regular file if a filesystem type is -not specified or the filesystem is known for libblkid, for example: -.RS -.sp -.B "mount /tmp/disk.img /mnt" -.sp -.B "mount -t ext3 /tmp/disk.img /mnt" -.sp -.RE -This type of mount knows about three options, namely -.BR loop ", " offset ", " sizelimit " , -that are really options to -.BR \%losetup (8). -(These options can be used in addition to those specific -to the filesystem type.) - -Since Linux 2.6.25 is supported auto-destruction of loop devices and -then any loop device allocated by -.B mount -will be freed by -.B umount -independently on -.IR /etc/mtab . - -You can also free a loop device by hand, using `losetup -d' or `umount -d`. - -.SH RETURN CODES -.B mount -has the following return codes (the bits can be ORed): -.TP -.BR 0 -success -.TP -.BR 1 -incorrect invocation or permissions -.TP -.BR 2 -system error (out of memory, cannot fork, no more loop devices) -.TP -.BR 4 -internal -.B mount -bug -.TP -.BR 8 -user interrupt -.TP -.BR 16 -problems writing or locking /etc/mtab -.TP -.BR 32 -mount failure -.TP -.BR 64 -some mount succeeded - -.SH NOTES -The syntax of external mount helpers is: - -.RS -.BI /sbin/mount. <suffix> -.I spec dir -.RB [ \-sfnv ] -.RB [ \-o -.IR options ] -.RB [ \-t -.IR type.subtype ] -.RE - -where the <type> is filesystem type and \-sfnvo options have same meaning like -standard mount options. The \-t option is used for filesystems with subtypes -support (for example /sbin/mount.fuse -t fuse.sshfs). - -.SH FILES -.TP 18n -.I /etc/fstab -filesystem table -.TP -.I /etc/mtab -table of mounted filesystems -.TP -.I /etc/mtab~ -lock file -.TP -.I /etc/mtab.tmp -temporary file -.TP -.I /etc/filesystems -a list of filesystem types to try - -.SH "SEE ALSO" -.BR mount (2), -.BR umount (2), -.BR fstab (5), -.BR umount (8), -.BR swapon (8), -.BR nfs (5), -.BR xfs (5), -.BR e2label (8), -.BR xfs_admin (8), -.BR mountd (8), -.BR nfsd (8), -.BR mke2fs (8), -.BR tune2fs (8), -.BR losetup (8) -.SH BUGS -It is possible for a corrupted filesystem to cause a crash. -.PP -Some Linux filesystems don't support -.B "\-o sync and \-o dirsync" -(the ext2, ext3, fat and vfat filesystems -.I do -support synchronous updates (a la BSD) when mounted with the -.B sync -option). -.PP -The -.B "\-o remount" -may not be able to change mount parameters (all -.IR ext2fs -specific -parameters, except -.BR sb , -are changeable with a remount, for example, but you can't change -.B gid -or -.B umask -for the -.IR fatfs ). -.PP -Mount by label or uuid will work only if your devices have the names listed in -.IR /proc/partitions . -In particular, it may well fail if the kernel was compiled with devfs -but devfs is not mounted. -.PP -It is possible that files -.IR /etc/mtab -and -.IR /proc/mounts -don't match. The first file is based only on the mount command options, but the -content of the second file also depends on the kernel and others settings (e.g. -remote NFS server. In particular case the mount command may reports unreliable -information about a NFS mount point and the /proc/mounts file usually contains -more reliable information.) -.PP -Checking files on NFS filesystem referenced by file descriptors (i.e. the -.BR fcntl -and -.BR ioctl -families of functions) may lead to inconsistent result due to the lack of -consistency check in kernel even if noac is used. -.SH HISTORY -A -.B mount -command existed in Version 5 AT&T UNIX. -.SH AVAILABILITY -The mount command is part of the util-linux package and is available from -ftp://ftp.kernel.org/pub/linux/utils/util-linux/. diff --git a/mount-deprecated/mount.c b/mount-deprecated/mount.c deleted file mode 100644 index d8e1712da..000000000 --- a/mount-deprecated/mount.c +++ /dev/null @@ -1,2625 +0,0 @@ -/* - * A mount(8) for Linux. - * - * Modifications by many people. Distributed under GPL. - */ - -#include <unistd.h> -#include <ctype.h> -#include <errno.h> -#include <string.h> -#include <getopt.h> -#include <stdio.h> - -#include <pwd.h> -#include <grp.h> - -#include <sys/types.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <sys/wait.h> -#include <sys/mount.h> - -#include <mntent.h> - -#ifdef HAVE_LIBSELINUX -#include <selinux/selinux.h> -#include <selinux/context.h> -#endif - -#include "pathnames.h" -#include "fsprobe.h" -#include "devname.h" -#include "mount_constants.h" -#include "sundries.h" -#include "mount_mntent.h" -#include "fstab.h" -#include "loopdev.h" -#include "linux_version.h" -#include "getusername.h" -#include "env.h" -#include "nls.h" -#include "blkdev.h" -#include "strutils.h" -#include "closestream.h" -#include "xgetpass.h" - -#define DO_PS_FIDDLING - -#ifdef DO_PS_FIDDLING -#include "setproctitle.h" -#endif - -/* True for fake mount (-f). */ -static int fake = 0; - -/* True if we are allowed to call /sbin/mount.${FSTYPE} */ -static int external_allowed = 1; - -/* Don't write an entry in /etc/mtab (-n). */ -static int nomtab = 0; - -/* True for explicit readonly (-r). */ -static int readonly = 0; - -/* Nonzero for sloppy (-s). */ -static int sloppy = 0; - -/* True for explicit read/write (-w). */ -static int readwrite = 0; - -/* True for all mount (-a). */ -static int mount_all = 0; - -/* True for fork() during all mount (-F). */ -static int optfork = 0; - -/* Add volumelabel in a listing of mounted devices (-l). */ -static int list_with_volumelabel = 0; - -/* Nonzero for mount {bind|move|make-shared|make-private| - * make-unbindable|make-slave} - */ -static int mounttype = 0; - -/* True if (ruid != euid) or (0 != ruid), i.e. only "user" mounts permitted. */ -static int restricted = 1; - -/* mount(2) options */ -struct mountargs { - const char *spec; - const char *node; - const char *type; - int flags; - void *data; -}; - -/* Map from -o and fstab option strings to the flag argument to mount(2). */ -struct opt_map { - const char *opt; /* option name */ - int skip; /* skip in mtab option string */ - int inv; /* true if flag value should be inverted */ - int mask; /* flag mask value */ - int cmask; /* comments mask */ -}; - -/* Custom mount options for our own purposes. */ -/* Maybe these should now be freed for kernel use again */ -#define MS_NOAUTO 0x80000000 -#define MS_USERS 0x40000000 -#define MS_USER 0x20000000 -#define MS_OWNER 0x10000000 -#define MS_GROUP 0x08000000 -#define MS_COMMENT 0x02000000 -#define MS_LOOP 0x00010000 - -#define MS_COMMENT_NOFAIL (1 << 1) -#define MS_COMMENT_NETDEV (1 << 2) - -/* Options that we keep the mount system call from seeing. */ -#define MS_NOSYS (MS_NOAUTO|MS_USERS|MS_USER|MS_COMMENT|MS_LOOP) - -/* Options that we keep from appearing in the options field in the mtab. */ -#define MS_NOMTAB (MS_REMOUNT|MS_NOAUTO|MS_USERS|MS_USER) - -#define MS_PROPAGATION (MS_SHARED|MS_SLAVE|MS_UNBINDABLE|MS_PRIVATE) - -/* Options that we make ordinary users have by default. */ -#define MS_SECURE (MS_NOEXEC|MS_NOSUID|MS_NODEV) - -/* Options that we make owner-mounted devices have by default */ -#define MS_OWNERSECURE (MS_NOSUID|MS_NODEV) - -static const struct opt_map opt_map[] = { - { "defaults", 0, 0, 0 }, /* default options */ - { "ro", 1, 0, MS_RDONLY }, /* read-only */ - { "rw", 1, 1, MS_RDONLY }, /* read-write */ - { "exec", 0, 1, MS_NOEXEC }, /* permit execution of binaries */ - { "noexec", 0, 0, MS_NOEXEC }, /* don't execute binaries */ - { "suid", 0, 1, MS_NOSUID }, /* honor suid executables */ - { "nosuid", 0, 0, MS_NOSUID }, /* don't honor suid executables */ - { "dev", 0, 1, MS_NODEV }, /* interpret device files */ - { "nodev", 0, 0, MS_NODEV }, /* don't interpret devices */ - { "sync", 0, 0, MS_SYNCHRONOUS}, /* synchronous I/O */ - { "async", 0, 1, MS_SYNCHRONOUS}, /* asynchronous I/O */ - { "dirsync", 0, 0, MS_DIRSYNC}, /* synchronous directory modifications */ - { "remount", 0, 0, MS_REMOUNT}, /* Alter flags of mounted FS */ - { "bind", 0, 0, MS_BIND }, /* Remount part of tree elsewhere */ - { "rbind", 0, 0, MS_BIND|MS_REC }, /* Idem, plus mounted subtrees */ - { "auto", 0, 1, MS_NOAUTO }, /* Can be mounted using -a */ - { "noauto", 0, 0, MS_NOAUTO }, /* Can only be mounted explicitly */ - { "users", 0, 0, MS_USERS }, /* Allow ordinary user to mount */ - { "nousers", 0, 1, MS_USERS }, /* Forbid ordinary user to mount */ - { "user", 0, 0, MS_USER }, /* Allow ordinary user to mount */ - { "nouser", 0, 1, MS_USER }, /* Forbid ordinary user to mount */ - { "owner", 0, 0, MS_OWNER }, /* Let the owner of the device mount */ - { "noowner", 0, 1, MS_OWNER }, /* Device owner has no special privs */ - { "group", 0, 0, MS_GROUP }, /* Let the group of the device mount */ - { "nogroup", 0, 1, MS_GROUP }, /* Device group has no special privs */ - { "_netdev", 0, 0, MS_COMMENT, MS_COMMENT_NETDEV }, /* Device requires network */ - { "comment", 0, 0, MS_COMMENT}, /* fstab comment only (kudzu,_netdev)*/ - - /* add new options here */ -#ifdef MS_NOSUB - { "sub", 0, 1, MS_NOSUB }, /* allow submounts */ - { "nosub", 0, 0, MS_NOSUB }, /* don't allow submounts */ -#endif -#ifdef MS_SILENT - { "silent", 0, 0, MS_SILENT }, /* be quiet */ - { "loud", 0, 1, MS_SILENT }, /* print out messages. */ -#endif -#ifdef MS_MANDLOCK - { "mand", 0, 0, MS_MANDLOCK }, /* Allow mandatory locks on this FS */ - { "nomand", 0, 1, MS_MANDLOCK }, /* Forbid mandatory locks on this FS */ -#endif - { "loop", 1, 0, MS_LOOP }, /* use a loop device */ -#ifdef MS_NOATIME - { "atime", 0, 1, MS_NOATIME }, /* Update access time */ - { "noatime", 0, 0, MS_NOATIME }, /* Do not update access time */ -#endif -#ifdef MS_I_VERSION - { "iversion", 0, 0, MS_I_VERSION }, /* Update inode I_version time */ - { "noiversion", 0, 1, MS_I_VERSION }, /* Don't update inode I_version time */ -#endif -#ifdef MS_NODIRATIME - { "diratime", 0, 1, MS_NODIRATIME }, /* Update dir access times */ - { "nodiratime", 0, 0, MS_NODIRATIME },/* Do not update dir access times */ -#endif -#ifdef MS_RELATIME - { "relatime", 0, 0, MS_RELATIME }, /* Update access times relative to - mtime/ctime */ - { "norelatime", 0, 1, MS_RELATIME }, /* Update access time without regard - to mtime/ctime */ -#endif -#ifdef MS_STRICTATIME - { "strictatime", 0, 0, MS_STRICTATIME }, /* Strict atime semantics */ - { "nostrictatime", 0, 1, MS_STRICTATIME }, /* kernel default atime */ -#endif - { "nofail", 0, 0, MS_COMMENT, MS_COMMENT_NOFAIL }, /* Do not fail if ENOENT on dev */ - { NULL, 0, 0, 0 } -}; - -static int opt_nofail; -static int invuser_flags; -static int comment_flags; - -static const char *opt_loopdev, *opt_vfstype, *opt_offset, *opt_sizelimit, - *opt_encryption, *opt_speed, *opt_comment, *opt_uhelper, *opt_helper; - -static int is_readonly(const char *node); -static int mounted (const char *spec0, const char *node0, struct mntentchn *fstab_mc); -static int check_special_mountprog(const char *spec, const char *node, - const char *type, int flags, char *extra_opts, int *status); - -static struct string_opt_map { - char *tag; - int skip; - const char **valptr; -} string_opt_map[] = { - { "loop=", 0, &opt_loopdev }, - { "vfs=", 1, &opt_vfstype }, - { "offset=", 0, &opt_offset }, - { "sizelimit=", 0, &opt_sizelimit }, - { "encryption=", 0, &opt_encryption }, - { "speed=", 0, &opt_speed }, - { "comment=", 1, &opt_comment }, - { "uhelper=", 0, &opt_uhelper }, - { "helper=", 0, &opt_helper }, - { NULL, 0, NULL } -}; - -static void -clear_string_opts(void) { - struct string_opt_map *m; - - for (m = &string_opt_map[0]; m->tag; m++) - *(m->valptr) = NULL; -} - -static void -clear_flags_opts(void) { - invuser_flags = 0; - comment_flags = 0; - opt_nofail = 0; -} - -static int -parse_string_opt(char *s) { - struct string_opt_map *m; - int lth; - - for (m = &string_opt_map[0]; m->tag; m++) { - lth = strlen(m->tag); - if (!strncmp(s, m->tag, lth)) { - *(m->valptr) = xstrdup(s + lth); - return 1; - } - } - return 0; -} - -/* Report on a single mount. */ -static void -print_one (const struct my_mntent *me) { - - char *fsname = NULL; - - if (mount_quiet) - return; - - /* users assume backing file name rather than /dev/loopN in - * mount(8) output if the device has been initialized by mount(8). - */ - if (strncmp(me->mnt_fsname, "/dev/loop", 9) == 0 && - loopdev_is_autoclear(me->mnt_fsname)) - fsname = loopdev_get_backing_file(me->mnt_fsname); - - if (!fsname) - fsname = (char *) me->mnt_fsname; - - printf ("%s on %s", fsname, me->mnt_dir); - if (me->mnt_type != NULL && *(me->mnt_type) != '\0') - printf (" type %s", me->mnt_type); - if (me->mnt_opts != NULL) - printf (" (%s)", me->mnt_opts); - if (list_with_volumelabel && is_pseudo_fs(me->mnt_type) == 0) { - const char *devname = spec_to_devname(me->mnt_fsname); - - if (devname) { - const char *label; - - label = fsprobe_get_label_by_devname(devname); - my_free(devname); - - if (label) { - printf (" [%s]", label); - my_free(label); - } - } - } - printf ("\n"); -} - -/* Report on everything in mtab (of the specified types if any). */ -static int -print_all (char *types) { - struct mntentchn *mc, *mc0; - - mc0 = mtab_head(); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) { - if (matching_type (mc->m.mnt_type, types)) - print_one (&(mc->m)); - } - - if (!mtab_does_not_exist() && !mtab_is_a_symlink() && is_readonly(_PATH_MOUNTED)) - printf(_("\n" - "mount: warning: /etc/mtab is not writable (e.g. read-only filesystem).\n" - " It's possible that information reported by mount(8) is not\n" - " up to date. For actual information about system mount points\n" - " check the /proc/mounts file.\n\n")); - - exit (0); -} - -/* reallocates its first arg */ -static char * -append_opt(char *s, const char *opt, const char *val) -{ - if (!opt) - return s; - if (!s) { - if (!val) - return xstrdup(opt); /* opt */ - - return xstrconcat3(NULL, opt, val); /* opt=val */ - } - if (!val) - return xstrconcat3(s, ",", opt); /* s,opt */ - - return xstrconcat4(s, ",", opt, val); /* s,opt=val */ -} - -static char * -append_numopt(char *s, const char *opt, unsigned int num) -{ - char buf[32]; - - snprintf(buf, sizeof(buf), "%u", num); - return append_opt(s, opt, buf); -} - -#ifdef HAVE_LIBSELINUX -/* strip quotes from a "string" - * Warning: This function modify the "str" argument. - */ -static char * -strip_quotes(char *str) -{ - char *end = NULL; - - if (*str != '"') - return str; - - end = strrchr(str, '"'); - if (end == NULL || end == str) - die (EX_USAGE, _("mount: improperly quoted option string '%s'"), str); - - *end = '\0'; - return str+1; -} - -/* translates SELinux context from human to raw format and - * appends it to the mount extra options. - * - * returns -1 on error and 0 on success - */ -static int -append_context(const char *optname, char *optdata, char **extra_opts) -{ - security_context_t raw = NULL; - char *data = NULL; - - if (is_selinux_enabled() != 1) - /* ignore the option if we running without selinux */ - return 0; - - if (optdata==NULL || *optdata=='\0' || optname==NULL) - return -1; - - /* TODO: use strip_quotes() for all mount options? */ - data = *optdata =='"' ? strip_quotes(optdata) : optdata; - - if (selinux_trans_to_raw_context( - (security_context_t) data, &raw) == -1 || - raw == NULL) - return -1; - - if (verbose) - printf(_("mount: translated %s '%s' to '%s'\n"), - optname, data, (char *) raw); - - *extra_opts = append_opt(*extra_opts, optname, NULL); - *extra_opts = xstrconcat4(*extra_opts, "\"", (char *) raw, "\""); - - freecon(raw); - return 0; -} - -/* returns newly allocated string without *context= options */ -static char *remove_context_options(char *opts) -{ - char *begin = NULL, *end = NULL, *p; - int open_quote = 0, changed = 0; - - if (!opts) - return NULL; - - opts = xstrdup(opts); - - for (p = opts; p && *p; p++) { - if (!begin) - begin = p; /* begin of the option item */ - if (*p == '"') - open_quote ^= 1; /* reverse the status */ - if (open_quote) - continue; /* still in quoted block */ - if (*p == ',') - end = p; /* terminate the option item */ - else if (*(p + 1) == '\0') - end = p + 1; /* end of optstr */ - if (!begin || !end) - continue; - - if (strncmp(begin, "context=", 8) == 0 || - strncmp(begin, "fscontext=", 10) == 0 || - strncmp(begin, "defcontext=", 11) == 0 || - strncmp(begin, "rootcontext=", 12) == 0 || - strncmp(begin, "seclabel", 8) == 0) { - size_t sz; - - if ((begin == opts || *(begin - 1) == ',') && *end == ',') - end++; - sz = strlen(end); - - memmove(begin, end, sz + 1); - if (!*begin && *(begin - 1) == ',') - *(begin - 1) = '\0'; - - p = begin; - changed = 1; - } - begin = end = NULL; - } - - if (changed && verbose) - printf (_("mount: SELinux *context= options are ignore on remount.\n")); - - return opts; -} - -static int has_context_option(char *opts) -{ - if (get_option("context=", opts, NULL) || - get_option("fscontext=", opts, NULL) || - get_option("defcontext=", opts, NULL) || - get_option("rootcontext=", opts, NULL)) - return 1; - - return 0; -} - -#endif - -/* - * Look for OPT in opt_map table and return mask value. - * If OPT isn't found, tack it onto extra_opts (which is non-NULL). - * For the options uid= and gid= replace user or group name by its value. - */ -static inline void -parse_opt(char *opt, int *mask, int *inv_user, char **extra_opts) { - const struct opt_map *om; - - for (om = opt_map; om->opt != NULL; om++) - if (streq (opt, om->opt)) { - if (om->inv) - *mask &= ~om->mask; - else - *mask |= om->mask; - if (om->inv && ((*mask & MS_USER) || (*mask & MS_USERS)) - && (om->mask & MS_SECURE)) - *inv_user |= om->mask; - if ((om->mask == MS_USER || om->mask == MS_USERS) - && !om->inv) - *mask |= MS_SECURE; - if ((om->mask == MS_OWNER || om->mask == MS_GROUP) - && !om->inv) - *mask |= MS_OWNERSECURE; -#ifdef MS_SILENT - if (om->mask == MS_SILENT && om->inv) { - mount_quiet = 1; - verbose = 0; - } -#endif - if (om->mask == MS_COMMENT) { - comment_flags |= om->cmask; - if (om->cmask == MS_COMMENT_NOFAIL) - opt_nofail = 1; - } - return; - } - - /* convert nonnumeric ids to numeric */ - if (!strncmp(opt, "uid=", 4) && !isdigit(opt[4])) { - struct passwd *pw = getpwnam(opt+4); - - if (pw) { - *extra_opts = append_numopt(*extra_opts, - "uid=", pw->pw_uid); - return; - } - } - if (!strncmp(opt, "gid=", 4) && !isdigit(opt[4])) { - struct group *gr = getgrnam(opt+4); - - if (gr) { - *extra_opts = append_numopt(*extra_opts, - "gid=", gr->gr_gid); - return; - } - } - -#ifdef HAVE_LIBSELINUX - if (strncmp(opt, "context=", 8) == 0 && *(opt+8)) { - if (append_context("context=", opt+8, extra_opts) == 0) - return; - } - if (strncmp(opt, "fscontext=", 10) == 0 && *(opt+10)) { - if (append_context("fscontext=", opt+10, extra_opts) == 0) - return; - } - if (strncmp(opt, "defcontext=", 11) == 0 && *(opt+11)) { - if (append_context("defcontext=", opt+11, extra_opts) == 0) - return; - } - if (strncmp(opt, "rootcontext=", 12) == 0 && *(opt+12)) { - if (append_context("rootcontext=", opt+12, extra_opts) == 0) - return; - } -#endif - *extra_opts = append_opt(*extra_opts, opt, NULL); -} - - -/* Take -o options list and compute 4th and 5th args to mount(2). flags - gets the standard options (indicated by bits) and extra_opts all the rest */ -static void -parse_opts (const char *options, int *flags, char **extra_opts) { - *flags = 0; - *extra_opts = NULL; - - clear_string_opts(); - clear_flags_opts(); - - if (options != NULL) { - char *opts = xstrdup(options); - int open_quote = 0; - char *opt, *p; - - for (p=opts, opt=NULL; p && *p; p++) { - if (!opt) - opt = p; /* begin of the option item */ - if (*p == '"') - open_quote ^= 1; /* reverse the status */ - if (open_quote) - continue; /* still in quoted block */ - if (*p == ',') - *p = '\0'; /* terminate the option item */ - /* end of option item or last item */ - if (*p == '\0' || *(p+1) == '\0') { - if (!parse_string_opt(opt)) - parse_opt(opt, flags, &invuser_flags, extra_opts); - opt = NULL; - } - } - free(opts); - } - - if (readonly) - *flags |= MS_RDONLY; - if (readwrite) - *flags &= ~MS_RDONLY; - - *flags |= mounttype; - - /* The propagation flags should not be used together with any - * other flags (except MS_REC and MS_SILENT) */ - if (*flags & MS_PROPAGATION) - *flags &= (MS_PROPAGATION | MS_REC | MS_SILENT); -} - -/* Try to build a canonical options string. */ -static char * -fix_opts_string (int flags, const char *extra_opts, - const char *user, int inv_user) -{ - const struct opt_map *om; - const struct string_opt_map *m; - char *new_opts; - - new_opts = append_opt(NULL, (flags & MS_RDONLY) ? "ro" : "rw", NULL); - for (om = opt_map; om->opt != NULL; om++) { - if (om->skip) - continue; - if (om->inv || !om->mask || (flags & om->mask) != om->mask) - continue; - if (om->mask == MS_COMMENT && !(comment_flags & om->cmask)) - continue; - new_opts = append_opt(new_opts, om->opt, NULL); - flags &= ~om->mask; - } - for (m = &string_opt_map[0]; m->tag; m++) { - if (!m->skip && *(m->valptr)) - new_opts = append_opt(new_opts, m->tag, *(m->valptr)); - } - if (extra_opts && *extra_opts) - new_opts = append_opt(new_opts, extra_opts, NULL); - - if (user) - new_opts = append_opt(new_opts, "user=", user); - - if (inv_user) { - for (om = opt_map; om->opt != NULL; om++) { - if (om->mask && om->inv - && (inv_user & om->mask) == om->mask) { - new_opts = append_opt(new_opts, om->opt, NULL); - inv_user &= ~om->mask; - } - } - } - - return new_opts; -} - -static int -already (const char *spec0, const char *node0) { - struct mntentchn *mc; - int ret = 1; - char *spec = canonicalize_spec(spec0); - char *node = canonicalize(node0); - - if ((mc = getmntfile(node)) != NULL) - error (_("mount: according to mtab, " - "%s is already mounted on %s"), - mc->m.mnt_fsname, node); - else if (spec && strcmp (spec, "none") && - (mc = getmntfile(spec)) != NULL) - error (_("mount: according to mtab, %s is mounted on %s"), - spec, mc->m.mnt_dir); - else - ret = 0; - - free(spec); - free(node); - - return ret; -} - -/* Create mtab with a root entry. */ -static void -create_mtab (void) { - struct mntentchn *fstab; - struct my_mntent mnt; - int flags; - mntFILE *mfp; - - lock_mtab(); - - mfp = my_setmntent (_PATH_MOUNTED, "a+"); - if (mfp == NULL || mfp->mntent_fp == NULL) { - int errsv = errno; - die (EX_FILEIO, _("mount: can't open %s for writing: %s"), - _PATH_MOUNTED, strerror (errsv)); - } - - /* Find the root entry by looking it up in fstab */ - if ((fstab = getfs_by_dir ("/")) || (fstab = getfs_by_dir ("root"))) { - char *extra_opts; - parse_opts (fstab->m.mnt_opts, &flags, &extra_opts); - mnt.mnt_dir = "/"; - mnt.mnt_fsname = spec_to_devname(fstab->m.mnt_fsname); - mnt.mnt_type = fstab->m.mnt_type; - mnt.mnt_opts = fix_opts_string (flags, extra_opts, NULL, 0); - mnt.mnt_freq = mnt.mnt_passno = 0; - free(extra_opts); - - if (my_addmntent (mfp, &mnt) == 1) { - int errsv = errno; - die (EX_FILEIO, _("mount: error writing %s: %s"), - _PATH_MOUNTED, strerror (errsv)); - } - } - if (fchmod (fileno (mfp->mntent_fp), 0644) < 0) - if (errno != EROFS) { - int errsv = errno; - die (EX_FILEIO, - _("mount: error changing mode of %s: %s"), - _PATH_MOUNTED, strerror (errsv)); - } - my_endmntent (mfp); - - unlock_mtab(); - - reset_mtab_info(); -} - -/* count successful mount system calls */ -static int mountcount = 0; - -/* - * do_mount_syscall() - * Mount a single file system. Keep track of successes. - * returns: 0: OK, -1: error in errno - */ -static int -do_mount_syscall (struct mountargs *args) { - int flags = args->flags; - - if ((flags & MS_MGC_MSK) == 0) - flags |= MS_MGC_VAL; - - if (verbose > 2) - printf("mount: mount(2) syscall: source: \"%s\", target: \"%s\", " - "filesystemtype: \"%s\", mountflags: %d, data: %s\n", - args->spec, args->node, args->type, flags, (char *) args->data); - - return mount (args->spec, args->node, args->type, flags, args->data); -} - -/* - * do_mount() - * Mount a single file system, possibly invoking an external handler to - * do so. Keep track of successes. - * returns: 0: OK, -1: error in errno - */ -static int -do_mount (struct mountargs *args, int *special, int *status) { - int ret; - if (check_special_mountprog(args->spec, args->node, args->type, - args->flags, args->data, status)) { - *special = 1; - ret = 0; - } else { - ret = do_mount_syscall(args); - } - if (ret == 0) - mountcount++; - return ret; -} - -/* - * check_special_mountprog() - * If there is a special mount program for this type, exec it. - * returns: 0: no exec was done, 1: exec was done, status has result - */ -static int -check_special_mountprog(const char *spec, const char *node, const char *type, int flags, - char *extra_opts, int *status) { - char search_path[] = FS_SEARCH_PATH; - char *path, mountprog[150]; - struct stat statbuf; - int res; - - if (!external_allowed) - return 0; - - if (type == NULL || strcmp(type, "none") == 0) - return 0; - - path = strtok(search_path, ":"); - while (path) { - int type_opt = 0; - - res = snprintf(mountprog, sizeof(mountprog), "%s/mount.%s", - path, type); - path = strtok(NULL, ":"); - if (res < 0 || (size_t) res >= sizeof(mountprog)) - continue; - - res = stat(mountprog, &statbuf); - if (res == -1 && errno == ENOENT && strchr(type, '.')) { - /* If type ends with ".subtype" try without it */ - *strrchr(mountprog, '.') = '\0'; - type_opt = 1; - res = stat(mountprog, &statbuf); - } - if (res) - continue; - - if (verbose) - fflush(stdout); - - switch (fork()) { - case 0: { /* child */ - char *oo, *mountargs[12]; - int i = 0; - - if (setgid(getgid()) < 0) - die(EX_FAIL, _("mount: cannot set group id: %m")); - - if (setuid(getuid()) < 0) - die(EX_FAIL, _("mount: cannot set user id: %m")); - - oo = fix_opts_string(flags, extra_opts, NULL, invuser_flags); - mountargs[i++] = mountprog; /* 1 */ - mountargs[i++] = (char *) spec; /* 2 */ - mountargs[i++] = (char *) node; /* 3 */ - if (sloppy && strncmp(type, "nfs", 3) == 0) - mountargs[i++] = "-s"; /* 4 */ - if (fake) - mountargs[i++] = "-f"; /* 5 */ - if (nomtab) - mountargs[i++] = "-n"; /* 6 */ - if (verbose) - mountargs[i++] = "-v"; /* 7 */ - if (oo && *oo) { - mountargs[i++] = "-o"; /* 8 */ - mountargs[i++] = oo; /* 9 */ - } - if (type_opt) { - mountargs[i++] = "-t"; /* 10 */ - mountargs[i++] = (char *) type; /* 11 */ - } - mountargs[i] = NULL; /* 12 */ - - if (verbose > 2) { - i = 0; - while (mountargs[i]) { - printf("mount: external mount: argv[%d] = \"%s\"\n", - i, mountargs[i]); - i++; - } - fflush(stdout); - } - - execv(mountprog, mountargs); - exit(1); /* exec failed */ - } - - default: { /* parent */ - int st; - wait(&st); - *status = (WIFEXITED(st) ? WEXITSTATUS(st) : EX_SYSERR); - return 1; - } - - case -1: { /* error */ - int errsv = errno; - error(_("mount: cannot fork: %s"), strerror(errsv)); - } - } - } - - return 0; -} - - -/* list of already tested filesystems by procfsloop_mount() */ -static struct tried { - struct tried *next; - char *type; -} *tried = NULL; - -static int -was_tested(const char *fstype) { - struct tried *t; - - for (t = tried; t; t = t->next) { - if (!strcmp(t->type, fstype)) - return 1; - } - return 0; -} - -static void -set_tested(const char *fstype) { - struct tried *t = xmalloc(sizeof(struct tried)); - - t->next = tried; - t->type = xstrdup(fstype); - tried = t; -} - -static void -free_tested(void) { - struct tried *t, *tt; - - t = tried; - while(t) { - free(t->type); - tt = t->next; - free(t); - t = tt; - } - tried = NULL; -} - -static char * -procfsnext(FILE *procfs) { - char line[100]; - char fsname[100]; - - while (fgets(line, sizeof(line), procfs)) { - if (sscanf (line, "nodev %[^#\n]\n", fsname) == 1) continue; - if (sscanf (line, " %[^# \n]\n", fsname) != 1) continue; - return xstrdup(fsname); - } - return 0; -} - -/* Only use /proc/filesystems here, this is meant to test what - the kernel knows about, so /etc/filesystems is irrelevant. - Return: 1: yes, 0: no, -1: cannot open procfs */ -static int -known_fstype_in_procfs(const char *type) -{ - FILE *procfs; - char *fsname; - int ret = -1; - - procfs = fopen(_PATH_PROC_FILESYSTEMS, "r"); - if (procfs) { - ret = 0; - while ((fsname = procfsnext(procfs)) != NULL) - if (!strcmp(fsname, type)) { - ret = 1; - break; - } - fclose(procfs); - procfs = NULL; - } - return ret; -} - -/* Try all types in FILESYSTEMS, except those in *types, - in case *types starts with "no" */ -/* return: 0: OK, -1: error in errno, 1: type not found */ -/* when 0 or -1 is returned, *types contains the type used */ -/* when 1 is returned, *types is NULL */ -static int -procfsloop_mount(int (*mount_fn)(struct mountargs *, int *, int *), - struct mountargs *args, - const char **types, - int *special, int *status) -{ - char *files[2] = { _PATH_FILESYSTEMS, _PATH_PROC_FILESYSTEMS }; - FILE *procfs; - char *fsname; - const char *notypes = NULL; - int no = 0; - int ret = 1; - int errsv = 0; - int i; - - if (*types && !strncmp(*types, "no", 2)) { - no = 1; - notypes = (*types) + 2; - } - *types = NULL; - - /* Use _PATH_PROC_FILESYSTEMS only when _PATH_FILESYSTEMS - * (/etc/filesystems) does not exist. In some cases trying a - * filesystem that the kernel knows about on the wrong data will crash - * the kernel; in such cases _PATH_FILESYSTEMS can be used to list the - * filesystems that we are allowed to try, and in the order they should - * be tried. End _PATH_FILESYSTEMS with a line containing a single '*' - * only, if _PATH_PROC_FILESYSTEMS should be tried afterwards. - */ - for (i=0; i<2; i++) { - procfs = fopen(files[i], "r"); - if (!procfs) - continue; - while ((fsname = procfsnext(procfs)) != NULL) { - if (!strcmp(fsname, "*")) { - fclose(procfs); - goto nexti; - } - if (was_tested (fsname)) - continue; - if (no && matching_type(fsname, notypes)) - continue; - set_tested (fsname); - args->type = fsname; - if (verbose) - printf(_("Trying %s\n"), fsname); - if ((*mount_fn) (args, special, status) == 0) { - *types = fsname; - ret = 0; - break; - } else if (errno != EINVAL && - known_fstype_in_procfs(fsname) == 1) { - *types = "guess"; - ret = -1; - errsv = errno; - break; - } - } - free_tested(); - fclose(procfs); - errno = errsv; - return ret; - nexti:; - } - return 1; -} - -static const char * -guess_fstype_by_devname(const char *devname, int *ambivalent) -{ - const char *type = fsprobe_get_fstype_by_devname_ambi(devname, ambivalent); - - if (verbose) { - printf (_("mount: you didn't specify a filesystem type for %s\n"), devname); - - if (!type) - printf (_(" I will try all types mentioned in %s or %s\n"), - _PATH_FILESYSTEMS, _PATH_PROC_FILESYSTEMS); - else if (!strcmp(type, MNTTYPE_SWAP)) - printf (_(" and it looks like this is swapspace\n")); - else - printf (_(" I will try type %s\n"), type); - } - return type; -} - -/* - * guess_fstype_and_mount() - * Mount a single file system. Guess the type when unknown. - * returns: 0: OK, -1: error in errno, 1: other error - * don't exit on non-fatal errors. - * on return types is filled with the type used. - */ -static int -guess_fstype_and_mount(const char *spec, const char *node, const char **types, - int flags, char *mount_opts, int *special, int *status) { - struct mountargs args = { spec, node, NULL, flags & ~MS_NOSYS, mount_opts }; - int ambivalent = 0; - - if (*types && strcasecmp (*types, "auto") == 0) - *types = NULL; - - if (!*types && !(flags & MS_REMOUNT)) { - *types = guess_fstype_by_devname(spec, &ambivalent); - if (*types) { - if (!strcmp(*types, MNTTYPE_SWAP)) { - error(_("%s looks like swapspace - not mounted"), spec); - *types = NULL; - return 1; - } else { - args.type = *types; - return do_mount (&args, special, status); - } - } else if (ambivalent) { - error(_("mount: %s: more filesystems detected. This should not happen,\n" - " use -t <type> to explicitly specify the filesystem type or\n" - " use wipefs(8) to clean up the device.\n"), spec); - return 1; - } - } - - /* Accept a comma-separated list of types, and try them one by one */ - /* A list like "nonfs,.." indicates types not to use */ - if (*types && strncmp(*types, "no", 2) && strchr(*types,',')) { - char *t = strdup(*types); - char *p; - - while((p = strchr(t,',')) != NULL) { - *p = 0; - args.type = *types = t; - if (do_mount (&args, special, status) == 0) - return 0; - t = p+1; - } - /* do last type below */ - *types = t; - } - - if (*types || (flags & MS_REMOUNT)) { - args.type = *types; - return do_mount (&args, special, status); - } - - return procfsloop_mount(do_mount, &args, types, special, status); -} - -/* - * restricted_check() - * Die if the user is not allowed to do this. - */ -static void -restricted_check(const char *spec, const char *node, int *flags, char **user) { - if (restricted) { - /* - * MS_OWNER: Allow owners to mount when fstab contains - * the owner option. Note that this should never be used - * in a high security environment, but may be useful to give - * people at the console the possibility of mounting a floppy. - * MS_GROUP: Allow members of device group to mount. (Martin Dickopp) - */ - if (*flags & (MS_OWNER | MS_GROUP)) { - struct stat sb; - - if (!strncmp(spec, "/dev/", 5) && stat(spec, &sb) == 0) { - - if (*flags & MS_OWNER) { - if (getuid() == sb.st_uid) - *flags |= MS_USER; - } - - if (*flags & MS_GROUP) { - if (getgid() == sb.st_gid) - *flags |= MS_USER; - else { - int n = getgroups(0, NULL); - - if (n > 0) { - gid_t *groups = xmalloc(n * sizeof(*groups)); - if (getgroups(n, groups) == n) { - int i; - for (i = 0; i < n; i++) { - if (groups[i] == sb.st_gid) { - *flags |= MS_USER; - break; - } - } - } - free(groups); - } - } - } - } - } - - /* James Kehl <mkehl@gil.com.au> came with a similar patch: - allow an arbitrary user to mount when he is the owner of - the mount-point and has write-access to the device. - This is even less secure. Let me skip it for the time being; - there should be an explicit fstab line allowing such things. */ - - if (!(*flags & (MS_USER | MS_USERS))) { - if (already (spec, node)) - die (EX_USAGE, _("mount failed")); - else - die (EX_USAGE, _("mount: only root can mount %s on %s"), spec, node); - } - if (*flags & MS_USER) - *user = getusername(); - } - - *flags &= ~(MS_OWNER | MS_GROUP); -} - -/* Check, if there already exists a mounted loop device on the mountpoint node - * with the same parameters. - */ -static int -is_mounted_same_loopfile(const char *node0, const char *loopfile, unsigned long long offset) -{ - struct mntentchn *mnt = NULL; - char *node; - int res = 0; - - node = canonicalize(node0); - - /* Search for mountpoint node in mtab, - * procceed if any of these has the loop option set or - * the device is a loop device - */ - mnt = getmntdirbackward(node, mnt); - if (!mnt) { - free(node); - return 0; - } - for(; mnt && res == 0; mnt = getmntdirbackward(node, mnt)) { - char *p; - - if (strncmp(mnt->m.mnt_fsname, "/dev/loop", 9) == 0) - res = loopdev_is_used((char *) mnt->m.mnt_fsname, - loopfile, offset, LOOPDEV_FL_OFFSET); - - else if (mnt->m.mnt_opts && - (p = strstr(mnt->m.mnt_opts, "loop="))) - { - char *dev = xstrdup(p+5); - if ((p = strchr(dev, ','))) - *p = '\0'; - res = loopdev_is_used(dev, - loopfile, offset, LOOPDEV_FL_OFFSET); - free(dev); - } - } - - free(node); - return res; -} - -static int -parse_offset(const char **opt, uintmax_t *val) -{ - char *tmp; - - if (strtosize(*opt, val)) - return -1; - - tmp = xmalloc(32); - snprintf(tmp, 32, "%jd", *val); - my_free(*opt); - *opt = tmp; - return 0; -} - -static int -loop_check(const char **spec, const char **type, int *flags, - int *loop, const char **loopdev, const char **loopfile, - const char *node) { - int looptype; - uintmax_t offset = 0, sizelimit = 0; - struct loopdev_cxt lc; - char *pwd = NULL; - int ret = EX_FAIL; - - /* - * In the case of a loop mount, either type is of the form lo@/dev/loop5 - * or the option "-o loop=/dev/loop5" or just "-o loop" is given, or - * mount just has to figure things out for itself from the fact that - * spec is not a block device. We do not test for a block device - * immediately: maybe later other types of mountable objects will occur. - */ - - *loopdev = opt_loopdev; - - looptype = (*type && strncmp("lo@", *type, 3) == 0); - if (looptype) { - if (*loopdev) - error(_("mount: loop device specified twice")); - *loopdev = *type + 3; - *type = opt_vfstype; - } else if (opt_vfstype) { - if (*type) - error(_("mount: type specified twice")); - else - *type = opt_vfstype; - } - - *loop = ((*flags & MS_LOOP) || *loopdev || opt_offset || opt_sizelimit); - *loopfile = *spec; - - /* Automatically create a loop device from a regular file if a filesystem - * is not specified or the filesystem is known for libblkid (these - * filesystems work with block devices only). - * - * Note that there is not a restriction (on kernel side) that prevents regular - * file as a mount(2) source argument. A filesystem that is able to mount - * regular files could be implemented. - */ - if (!*loop && !(*flags & (MS_BIND | MS_MOVE | MS_PROPAGATION)) && - (!*type || strcmp(*type, "auto") == 0 || fsprobe_known_fstype(*type))) { - - struct stat st; - if (stat(*loopfile, &st) == 0) - *loop = S_ISREG(st.st_mode); - } - - if (*loop) { - *flags |= MS_LOOP; - if (fake) { - if (verbose) - printf(_("mount: skipping the setup of a loop device\n")); - } else { - int loop_opts = 0; - - /* since 2.6.37 we don't have to store backing filename to mtab - * because kernel provides the name in /sys - */ - if (get_linux_version() >= KERNEL_VERSION(2, 6, 37) || - mtab_is_writable() == 0) { - - if (verbose) - printf(_("mount: enabling autoclear loopdev flag\n")); - loop_opts = LO_FLAGS_AUTOCLEAR; - } - - if (*flags & MS_RDONLY) - loop_opts |= LO_FLAGS_READ_ONLY; - - if (opt_offset && parse_offset(&opt_offset, &offset)) { - error(_("mount: invalid offset '%s' specified"), opt_offset); - return EX_FAIL; - } - if (opt_sizelimit && parse_offset(&opt_sizelimit, &sizelimit)) { - error(_("mount: invalid sizelimit '%s' specified"), opt_sizelimit); - return EX_FAIL; - } - - if (is_mounted_same_loopfile(node, *loopfile, offset)) { - error(_("mount: according to mtab %s is already mounted on %s as loop"), *loopfile, node); - return EX_FAIL; - } - - if (opt_encryption) { - error("mount: %s", _("encryption not supported, use cryptsetup(8) instead")); - return EX_FAIL; - } - - if (loopcxt_init(&lc, 0) < 0) { - error(_("mount: failed to initialize loopdev context")); - return EX_FAIL; - } - - if (*loopdev && **loopdev && loopcxt_set_device(&lc, *loopdev) < 0) { - error(_("mount: failed to use %s device"), *loopdev); - return EX_FAIL; - } - - do { - int rc; - - if ((!*loopdev || !**loopdev) && loopcxt_find_unused(&lc) == 0) - *loopdev = loopcxt_strdup_device(&lc); - - if (!*loopdev) { - error(_("mount: failed to found free loop device")); - loopcxt_deinit(&lc); - goto err; /* no more loop devices */ - } - if (verbose) - printf(_("mount: going to use the loop device %s\n"), *loopdev); - - rc = loopcxt_set_backing_file(&lc, *loopfile); - - if (!rc && offset) - rc = loopcxt_set_offset(&lc, offset); - if (!rc && sizelimit) - rc = loopcxt_set_sizelimit(&lc, sizelimit); - if (!rc) - loopcxt_set_flags(&lc, loop_opts); - - if (rc) { - error(_("mount: %s: failed to set loopdev attributes"), *loopdev); - loopcxt_deinit(&lc); - goto err; - } - - /* setup the device */ - rc = loopcxt_setup_device(&lc); - if (!rc) - break; /* success */ - - if (rc != -EBUSY) { - error(_("mount: %s: failed setting up loop device: %m"), *loopfile); - if (!opt_loopdev) { - my_free(*loopdev); - *loopdev = NULL; - } - loopcxt_deinit(&lc); - goto err; - } - - if (!opt_loopdev) { - if (verbose) - printf(_("mount: stolen loop=%s ...trying again\n"), *loopdev); - my_free(*loopdev); - *loopdev = NULL; - continue; - } - error(_("mount: stolen loop=%s"), *loopdev); - loopcxt_deinit(&lc); - goto err; - - } while (!*loopdev); - - if (verbose > 1) - printf(_("mount: setup loop device successfully\n")); - *spec = *loopdev; - - if (loopcxt_is_readonly(&lc)) - *flags |= MS_RDONLY; - - if (loopcxt_is_autoclear(&lc)) - /* Prevent recording loop dev in mtab for cleanup on umount */ - *loop = 0; - - /* We have to keep the device open until mount(2), otherwise it will - * be auto-cleared by kernel (because LO_FLAGS_AUTOCLEAR) */ - loopcxt_set_fd(&lc, -1, 0); - loopcxt_deinit(&lc); - } - } - - ret = 0; -err: - if (pwd) { - char *p = pwd; - while (*p) - *p++ = '\0'; - free(pwd); - } - return ret; -} - - -static void -update_mtab_entry(const char *spec, const char *node, const char *type, - const char *opts, int flags, int freq, int pass) { - struct my_mntent mnt; - - mnt.mnt_fsname = is_pseudo_fs(type) ? xstrdup(spec) : canonicalize(spec); - mnt.mnt_dir = canonicalize (node); - mnt.mnt_type = type; - mnt.mnt_opts = opts; - mnt.mnt_freq = freq; - mnt.mnt_passno = pass; - - /* We get chatty now rather than after the update to mtab since the - mount succeeded, even if the write to /etc/mtab should fail. */ - if (verbose) - print_one (&mnt); - - if (!nomtab && mtab_does_not_exist()) { - if (verbose > 1) - printf(_("mount: no %s found - creating it..\n"), - _PATH_MOUNTED); - create_mtab (); - - } - - if (!nomtab && mtab_is_writable()) { - if (flags & MS_REMOUNT) - update_mtab (mnt.mnt_dir, &mnt); - else if (flags & MS_MOVE) - update_mtab(mnt.mnt_fsname, &mnt); - else - update_mtab(NULL, &mnt); - } - my_free(mnt.mnt_fsname); - my_free(mnt.mnt_dir); -} - -static void -cdrom_setspeed(const char *spec) { -#define CDROM_SELECT_SPEED 0x5322 /* Set the CD-ROM speed */ - if (opt_speed) { - int cdrom; - int speed = atoi(opt_speed); - - if ((cdrom = open(spec, O_RDONLY | O_NONBLOCK)) < 0) - die(EX_FAIL, - _("mount: cannot open %s for setting speed"), - spec); - if (ioctl(cdrom, CDROM_SELECT_SPEED, speed) < 0) - die(EX_FAIL, _("mount: cannot set speed: %m")); - close(cdrom); - } -} - -/* - * Check if @path is on read-only filesystem independently on file permissions. - */ -static int -is_readonly(const char *path) -{ - if (access(path, W_OK) == 0) - return 0; - if (errno == EROFS) - return 1; - if (errno != EACCES) - return 0; - -#ifdef HAVE_FUTIMENS - /* - * access(2) returns EACCES on read-only FS: - * - * - for set-uid application if one component of the path is not - * accessible for the current rUID. (Note that euidaccess(2) does not - * check for EROFS at all). - * - * - for read-write filesystem with read-only VFS node (aka -o remount,ro,bind) - */ - { - struct timespec times[2]; - - times[0].tv_nsec = UTIME_NOW; /* atime */ - times[1].tv_nsec = UTIME_OMIT; /* mtime */ - - if (utimensat(AT_FDCWD, path, times, 0) == -1) - return errno == EROFS; - } -#endif - return 0; -} - -/* - * try_mount_one() - * Try to mount one file system. - * - * returns: 0: OK, EX_SYSERR, EX_FAIL, return code from nfsmount, - * return status from wait - */ -static int -try_mount_one (const char *spec0, const char *node0, const char *types0, - const char *opts0, int freq, int pass, int ro) { - int res = 0, status = 0, special = 0; - int mnt5_res = 0; /* only for gcc */ - int mnt_err; - int flags; - char *extra_opts; /* written in mtab */ - char *mount_opts; /* actually used on system call */ - const char *opts, *spec, *node, *types; - char *user = 0; - int loop = 0; - const char *loopdev = 0, *loopfile = 0; - struct stat statbuf; - - /* copies for freeing on exit */ - const char *opts1, *spec1, *node1, *types1; - - if (verbose > 2) { - printf("mount: spec: \"%s\"\n", spec0); - printf("mount: node: \"%s\"\n", node0); - printf("mount: types: \"%s\"\n", types0); - printf("mount: opts: \"%s\"\n", opts0); - } - - spec = spec1 = xstrdup(spec0); - node = node1 = xstrdup(node0); - types = types1 = xstrdup(types0); - opts = opts1 = xstrdup(opts0); - - parse_opts (opts, &flags, &extra_opts); - mount_opts = xstrdup(extra_opts); - - /* quietly succeed for fstab entries that don't get mounted automatically */ - if (mount_all && (flags & MS_NOAUTO)) - goto out; - - restricted_check(spec, node, &flags, &user); - - /* The "mount -f" checks for for existing record in /etc/mtab (with - * regular non-fake mount this is usually done by kernel) - */ - if (!(flags & MS_REMOUNT) && fake && mounted (spec, node, NULL)) - die(EX_USAGE, _("mount: according to mtab, " - "%s is already mounted on %s\n"), - spec, node); - - if (opt_speed) - cdrom_setspeed(spec); - - if (!(flags & MS_REMOUNT)) { - /* - * Don't set up a (new) loop device if we only remount - this left - * stale assignments of files to loop devices. Nasty when used for - * encryption. - */ - res = loop_check(&spec, &types, &flags, &loop, &loopdev, &loopfile, node); - if (res) - goto out; - } - - if (loop) - opt_loopdev = loopdev; - - if (flags & (MS_BIND | MS_MOVE | MS_PROPAGATION)) - types = "none"; - -#ifdef HAVE_LIBSELINUX - if (flags & MS_REMOUNT) { - /* - * Linux kernel does not accept any selinux context option on remount - */ - if (mount_opts) { - char *tmp = mount_opts; - mount_opts = remove_context_options(mount_opts); - my_free(tmp); - } - - } else if (types && strcmp(types, "tmpfs") == 0 && is_selinux_enabled() > 0 && - !has_context_option(mount_opts)) { - /* - * Add rootcontext= mount option for tmpfs - * https://bugzilla.redhat.com/show_bug.cgi?id=476964 - */ - security_context_t sc = NULL; - - if (getfilecon(node, &sc) > 0 && strcmp("unlabeled", sc)) - append_context("rootcontext=", (char *) sc, &mount_opts); - freecon(sc); - } -#endif - - /* - * Call mount.TYPE for types that require a separate mount program. - * For the moment these types are ncpfs and smbfs. Maybe also vxfs. - * All such special things must occur isolated in the types string. - */ - if (check_special_mountprog(spec, node, types, flags, mount_opts, &status)) { - res = status; - goto out; - } - - block_signals (SIG_BLOCK); - - if (!fake) { - mnt5_res = guess_fstype_and_mount (spec, node, &types, flags & ~MS_NOSYS, - mount_opts, &special, &status); - - if (special) { - block_signals (SIG_UNBLOCK); - res = status; - goto out; - } - } - - /* Kernel allows to use MS_RDONLY for bind mounts, but the read-only request - * could be silently ignored. Check it to avoid 'ro' in mtab and 'rw' in - * /proc/mounts. - */ - if (!fake && mnt5_res == 0 && - (flags & MS_BIND) && (flags & MS_RDONLY) && !is_readonly(node)) { - - printf(_("mount: warning: %s seems to be mounted read-write.\n"), node); - flags &= ~MS_RDONLY; - } - - /* Kernel can silently add MS_RDONLY flag when mounting file system that - * does not have write support. Check this to avoid 'ro' in /proc/mounts - * and 'rw' in mtab. - */ - if (!fake && mnt5_res == 0 && - !(flags & (MS_RDONLY | MS_PROPAGATION | MS_MOVE)) && - is_readonly(node)) { - - printf(_("mount: warning: %s seems to be mounted read-only.\n"), node); - flags |= MS_RDONLY; - } - - if (fake || mnt5_res == 0) { - char *mo = fix_opts_string (flags & ~MS_NOMTAB, extra_opts, user, 0); - const char *tp = types ? types : "unknown"; - - /* Mount succeeded, report this (if verbose) and write mtab entry. */ - if (!(mounttype & MS_PROPAGATION)) - update_mtab_entry(loop ? loopfile : spec, - node, - tp, - mo, - flags, - freq, - pass); - - block_signals (SIG_UNBLOCK); - free(mo); - - res = 0; - goto out; - } - - mnt_err = errno; - - if (loop) - loopdev_delete(spec); - - block_signals (SIG_UNBLOCK); - - /* Mount failed, complain, but don't die. */ - - if (types == NULL) { - if (restricted) - error (_("mount: I could not determine the filesystem type, " - "and none was specified")); - else - error (_("mount: you must specify the filesystem type")); - } else if (mnt5_res != -1) { - /* should not happen */ - error (_("mount: mount failed")); - } else { - switch (mnt_err) { - case EPERM: - if (geteuid() == 0) { - if (stat (node, &statbuf) || !S_ISDIR(statbuf.st_mode)) - error (_("mount: mount point %s is not a directory"), node); - else - error (_("mount: permission denied")); - } else - error (_("mount: must be superuser to use mount")); - break; - case EBUSY: - if (flags & MS_REMOUNT) { - error (_("mount: %s is busy"), node); - } else if (!strcmp(types, "proc") && !strcmp(node, "/proc")) { - /* heuristic: if /proc/version exists, then probably proc is mounted */ - if (stat ("/proc/version", &statbuf)) /* proc mounted? */ - error (_("mount: %s is busy"), node); /* no */ - else if (!mount_all || verbose) /* yes, don't mention it */ - error (_("mount: proc already mounted")); - } else { - error (_("mount: %s already mounted or %s busy"), spec, node); - already (spec, node); - } - break; - case ENOENT: - if (lstat (node, &statbuf)) - error (_("mount: mount point %s does not exist"), node); - else if (stat (node, &statbuf)) - error (_("mount: mount point %s is a symbolic link to nowhere"), - node); - else if (stat (spec, &statbuf)) { - if (opt_nofail) - goto out; - error (_("mount: special device %s does not exist"), spec); - } else { - errno = mnt_err; - perror("mount"); - } - break; - case ENOTDIR: - if (stat (node, &statbuf) || ! S_ISDIR(statbuf.st_mode)) - error (_("mount: mount point %s is not a directory"), node); - else if (stat (spec, &statbuf) && errno == ENOTDIR) { - if (opt_nofail) - goto out; - error (_("mount: special device %s does not exist\n" - " (a path prefix is not a directory)\n"), spec); - } else { - errno = mnt_err; - perror("mount"); - } - break; - case EINVAL: - { int fd; - unsigned long long size = 0; - - if (flags & MS_REMOUNT) { - error (_("mount: %s not mounted or bad option"), node); - } else { - error (_("mount: wrong fs type, bad option, bad superblock on %s,\n" - " missing codepage or helper program, or other error"), - spec); - - if (stat(spec, &statbuf) < 0) { - if (errno == ENOENT) /* network FS? */ - error(_( - " (for several filesystems (e.g. nfs, cifs) you might\n" - " need a /sbin/mount.<type> helper program)")); - - } else if (S_ISBLK(statbuf.st_mode) - && (fd = open(spec, O_RDONLY | O_NONBLOCK)) >= 0) { - - if (blkdev_get_size(fd, &size) == 0) { - if (size == 0 && !loop) - error(_( - " (could this be the IDE device where you in fact use\n" - " ide-scsi so that sr0 or sda or so is needed?)")); - - if (size && size <= 2) - error(_( - " (aren't you trying to mount an extended partition,\n" - " instead of some logical partition inside?)")); - - close(fd); - } - } - error(_( - " In some cases useful info is found in syslog - try\n" - " dmesg | tail or so\n")); - } - break; - } - case EMFILE: - error (_("mount table full")); break; - case EIO: - error (_("mount: %s: can't read superblock"), spec); break; - case ENODEV: - { - int pfs = known_fstype_in_procfs(types); - - if (pfs == 1 || !strcmp(types, "guess")) - error(_("mount: %s: unknown device"), spec); - else if (pfs == 0) { - char *lowtype, *p; - int u; - - error (_("mount: unknown filesystem type '%s'"), types); - - /* maybe this loser asked for FAT or ISO9660 or isofs */ - lowtype = xstrdup(types); - u = 0; - for(p=lowtype; *p; p++) { - if(tolower(*p) != *p) { - *p = tolower(*p); - u++; - } - } - if (u && known_fstype_in_procfs(lowtype) == 1) - error (_("mount: probably you meant %s"), lowtype); - else if (!strncmp(lowtype, "iso", 3) && - known_fstype_in_procfs("iso9660") == 1) - error (_("mount: maybe you meant 'iso9660'?")); - else if (!strncmp(lowtype, "fat", 3) && - known_fstype_in_procfs("vfat") == 1) - error (_("mount: maybe you meant 'vfat'?")); - free(lowtype); - } else - error (_("mount: %s has wrong device number or fs type %s not supported"), - spec, types); - break; - } - case ENOTBLK: - if (opt_nofail) - goto out; - if (stat (spec, &statbuf)) /* strange ... */ - error (_("mount: %s is not a block device, and stat fails?"), spec); - else if (S_ISBLK(statbuf.st_mode)) - error (_("mount: the kernel does not recognize %s as a block device\n" - " (maybe `modprobe driver'?)"), spec); - else if (S_ISREG(statbuf.st_mode)) - error (_("mount: %s is not a block device (maybe try `-o loop'?)"), - spec); - else - error (_("mount: %s is not a block device"), spec); - break; - case ENXIO: - if (opt_nofail) - goto out; - error (_("mount: %s is not a valid block device"), spec); break; - case EACCES: /* pre-linux 1.1.38, 1.1.41 and later */ - case EROFS: /* linux 1.1.38 and later */ - { char *bd = (loop ? "" : _("block device ")); - if (ro || (flags & MS_RDONLY)) { - error (_("mount: cannot mount %s%s read-only"), - bd, spec); - break; - } else if (readwrite) { - error (_("mount: %s%s is write-protected but explicit `-w' flag given"), - bd, spec); - break; - } else if (flags & MS_REMOUNT) { - error (_("mount: cannot remount %s%s read-write, is write-protected"), - bd, spec); - break; - } else { - opts = opts0; - types = types0; - - if (opts) { - char *opts2 = append_opt(xstrdup(opts), "ro", NULL); - my_free(opts1); - opts = opts1 = opts2; - } else - opts = "ro"; - if (types && !strcmp(types, "guess")) - types = 0; - error (_("mount: %s%s is write-protected, mounting read-only"), - bd, spec0); - res = try_mount_one (spec0, node0, types, opts, freq, pass, 1); - goto out; - } - break; - } - case ENOMEDIUM: - error(_("mount: no medium found on %s"), spec); - break; - default: - error ("mount: %s", strerror (mnt_err)); break; - } - } - res = EX_FAIL; - - out: - -#if defined(HAVE_LIBSELINUX) && defined(HAVE_SECURITY_GET_INITIAL_CONTEXT) - if (res != EX_FAIL && verbose && is_selinux_enabled() > 0) { - security_context_t raw = NULL, def = NULL; - - if (getfilecon(node, &raw) > 0 && - security_get_initial_context("file", &def) == 0) { - - if (!selinux_file_context_cmp(raw, def)) - printf(_("mount: %s does not contain SELinux labels.\n" - " You just mounted an file system that supports labels which does not\n" - " contain labels, onto an SELinux box. It is likely that confined\n" - " applications will generate AVC messages and not be allowed access to\n" - " this file system. For more details see restorecon(8) and mount(8).\n"), - node); - } - freecon(raw); - freecon(def); - } -#endif - - my_free(mount_opts); - my_free(extra_opts); - my_free(spec1); - my_free(node1); - my_free(opts1); - my_free(types1); - - return res; -} - -static char * -subst_string(const char *s, const char *sub, int sublen, const char *repl) { - char *n; - - n = (char *) xmalloc(strlen(s)-sublen+strlen(repl)+1); - strncpy (n, s, sub-s); - strcpy (n + (sub-s), repl); - strcat (n, sub+sublen); - return n; -} - -static char * -usersubst(const char *opts) { - char *s, *w; - char id[40]; - - if (!opts) - return NULL; - - s = "uid=useruid"; - if (opts && (w = strstr(opts, s)) != NULL) { - sprintf(id, "uid=%u", getuid()); - opts = subst_string(opts, w, strlen(s), id); - } - s = "gid=usergid"; - if (opts && (w = strstr(opts, s)) != NULL) { - sprintf(id, "gid=%u", getgid()); - opts = subst_string(opts, w, strlen(s), id); - } - return xstrdup(opts); -} - -static int -is_existing_file (const char *s) { - struct stat statbuf; - - return (stat(s, &statbuf) == 0); -} - -/* - * Return 0 for success (either mounted sth or -a and NOAUTO was given) - */ -static int -mount_one (const char *spec, const char *node, const char *types, - const char *fstabopts, char *cmdlineopts, int freq, int pass) { - const char *nspec = NULL; - char *opts; - - /* Substitute values in opts, if required */ - opts = usersubst(fstabopts); - - /* Merge the fstab and command line options. */ - opts = append_opt(opts, cmdlineopts, NULL); - - if (types == NULL && !mounttype && !is_existing_file(spec)) { - if (strchr (spec, ':') != NULL) { - types = "nfs"; - if (verbose) - printf(_("mount: no type was given - " - "I'll assume nfs because of " - "the colon\n")); - } else if(!strncmp(spec, "//", 2)) { - types = "cifs"; - if (verbose) - printf(_("mount: no type was given - " - "I'll assume cifs because of " - "the // prefix\n")); - } - } - - /* Handle possible LABEL= and UUID= forms of spec */ - if (types == NULL || (strncmp(types, "9p", 2) && - strncmp(types, "nfs", 3) && - strncmp(types, "cifs", 4) && - strncmp(types, "smbfs", 5))) { - if (!is_pseudo_fs(types)) - nspec = spec_to_devname(spec); - if (nspec) - spec = nspec; - } - - return try_mount_one (spec, node, types, opts, freq, pass, 0); -} - -static int -mounted (const char *spec0, const char *node0, - struct mntentchn *fstab_mc __attribute__((__unused__))) { - - struct mntentchn *mc, *mc0; - const char *spec, *node; - int ret = 0; - - /* Handle possible UUID= and LABEL= in spec */ - spec = spec_to_devname(spec0); - if (!spec) - return ret; - - node = canonicalize(node0); - - - mc0 = mtab_head(); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) - if (streq (spec, mc->m.mnt_fsname) && - streq (node, mc->m.mnt_dir)) { - ret = 1; - break; - } - - my_free(spec); - my_free(node); - - return ret; -} - -/* returns 0 if not mounted, 1 if mounted and -1 in case of error */ -static int -is_fstab_entry_mounted(struct mntentchn *mc, int verbose) -{ - struct stat st; - - if (mounted(mc->m.mnt_fsname, mc->m.mnt_dir, mc)) - goto yes; - - /* extra care for loop devices */ - if ((mc->m.mnt_opts && strstr(mc->m.mnt_opts, "loop=")) || - (stat(mc->m.mnt_fsname, &st) == 0 && S_ISREG(st.st_mode))) { - - char *p = get_option_value(mc->m.mnt_opts, "offset="); - uintmax_t offset = 0; - - if (p && strtosize(p, &offset) != 0) { - if (verbose) - printf(_("mount: ignore %s " - "(unparsable offset= option)\n"), - mc->m.mnt_fsname); - return -1; - } - free(p); - if (is_mounted_same_loopfile(mc->m.mnt_dir, mc->m.mnt_fsname, offset)) - goto yes; - } - - return 0; -yes: - if (verbose) - printf(_("mount: %s already mounted on %s\n"), - mc->m.mnt_fsname, mc->m.mnt_dir); - return 1; -} - -/* avoid using stat() on things we are not going to mount anyway.. */ -static int -has_noauto (const char *opts) { - char *s; - - if (!opts) - return 0; - s = strstr(opts, "noauto"); - if (!s) - return 0; - return (s == opts || s[-1] == ',') && (s[6] == 0 || s[6] == ','); -} - -/* Mount all filesystems of the specified types except swap and root. */ -/* With the --fork option: fork and let different incarnations of - mount handle different filesystems. However, try to avoid several - simultaneous mounts on the same physical disk, since that is very slow. */ -#define DISKMAJOR(m) (((int) m) & ~0xf) - -static int -do_mount_all (char *types, char *options, char *test_opts) { - struct mntentchn *mc, *mc0, *mtmp; - int status = 0; - struct stat statbuf; - struct child { - pid_t pid; - char *group; - struct mntentchn *mec; - struct mntentchn *meclast; - struct child *nxt; - } childhead, *childtail, *cp; - char major[22]; - char *g, *colon; - - /* build a chain of what we have to do, or maybe - several chains, one for each major or NFS host */ - childhead.nxt = 0; - childtail = &childhead; - mc0 = fstab_head(); - for (mc = mc0->nxt; mc && mc != mc0; mc = mc->nxt) { - if (has_noauto (mc->m.mnt_opts)) - continue; - if (matching_type (mc->m.mnt_type, types) - && matching_opts (mc->m.mnt_opts, test_opts) - && !streq (mc->m.mnt_dir, "/") - && !streq (mc->m.mnt_dir, "root") - && !is_fstab_entry_mounted(mc, verbose)) { - - mtmp = (struct mntentchn *) xmalloc(sizeof(*mtmp)); - *mtmp = *mc; - mtmp->nxt = 0; - g = NULL; - if (optfork) { - if (stat(mc->m.mnt_fsname, &statbuf) == 0 && - S_ISBLK(statbuf.st_mode)) { - sprintf(major, "#%x", - DISKMAJOR(statbuf.st_rdev)); - g = major; - } - if (strcmp(mc->m.mnt_type, "nfs") == 0) { - g = xstrdup(mc->m.mnt_fsname); - colon = strchr(g, ':'); - if (colon) - *colon = '\0'; - } - } - if (g) { - for (cp = childhead.nxt; cp; cp = cp->nxt) - if (cp->group && - strcmp(cp->group, g) == 0) { - cp->meclast->nxt = mtmp; - cp->meclast = mtmp; - goto fnd; - } - } - cp = (struct child *) xmalloc(sizeof *cp); - cp->nxt = 0; - cp->mec = cp->meclast = mtmp; - cp->group = xstrdup(g); - cp->pid = 0; - childtail->nxt = cp; - childtail = cp; - fnd:; - - } - } - - /* now do everything */ - for (cp = childhead.nxt; cp; cp = cp->nxt) { - pid_t p = -1; - if (optfork) { - p = fork(); - if (p == -1) { - int errsv = errno; - error(_("mount: cannot fork: %s"), - strerror (errsv)); - } - else if (p != 0) - cp->pid = p; - } - - /* if child, or not forked, do the mounting */ - if (p == 0 || p == -1) { - for (mc = cp->mec; mc; mc = mc->nxt) { - status |= mount_one (mc->m.mnt_fsname, - mc->m.mnt_dir, - mc->m.mnt_type, - mc->m.mnt_opts, - options, 0, 0); - } - if (mountcount) - status |= EX_SOMEOK; - if (p == 0) - exit(status); - } - } - - /* wait for children, if any */ - while ((cp = childhead.nxt) != NULL) { - childhead.nxt = cp->nxt; - if (cp->pid) { - int ret; - keep_waiting: - if(waitpid(cp->pid, &ret, 0) == -1) { - if (errno == EINTR) - goto keep_waiting; - perror("waitpid"); - } else if (WIFEXITED(ret)) - status |= WEXITSTATUS(ret); - else - status |= EX_SYSERR; - } - } - if (mountcount) - status |= EX_SOMEOK; - return status; -} - -static struct option longopts[] = { - { "all", 0, 0, 'a' }, - { "fake", 0, 0, 'f' }, - { "fork", 0, 0, 'F' }, - { "help", 0, 0, 'h' }, - { "no-mtab", 0, 0, 'n' }, - { "read-only", 0, 0, 'r' }, - { "ro", 0, 0, 'r' }, - { "verbose", 0, 0, 'v' }, - { "version", 0, 0, 'V' }, - { "read-write", 0, 0, 'w' }, - { "rw", 0, 0, 'w' }, - { "options", 1, 0, 'o' }, - { "test-opts", 1, 0, 'O' }, - { "pass-fd", 1, 0, 'p' }, - { "types", 1, 0, 't' }, - { "bind", 0, 0, 'B' }, - { "move", 0, 0, 'M' }, - { "rbind", 0, 0, 'R' }, - { "make-shared", 0, 0, 136 }, - { "make-slave", 0, 0, 137 }, - { "make-private", 0, 0, 138 }, - { "make-unbindable", 0, 0, 139 }, - { "make-rshared", 0, 0, 140 }, - { "make-rslave", 0, 0, 141 }, - { "make-rprivate", 0, 0, 142 }, - { "make-runbindable", 0, 0, 143 }, - { "no-canonicalize", 0, 0, 144 }, - { "internal-only", 0, 0, 'i' }, - { NULL, 0, 0, 0 } -}; - -/* Keep the usage message at max 22 lines, each at most 70 chars long. - The user should not need a pager to read it. */ -static void -usage (FILE *fp, int n) { - fprintf(fp, _( - "Usage: mount -V : print version\n" - " mount -h : print this help\n" - " mount : list mounted filesystems\n" - " mount -l : idem, including volume labels\n" - "So far the informational part. Next the mounting.\n" - "The command is `mount [-t fstype] something somewhere'.\n" - "Details found in /etc/fstab may be omitted.\n" - " mount -a [-t|-O] ... : mount all stuff from /etc/fstab\n" - " mount device : mount device at the known place\n" - " mount directory : mount known device here\n" - " mount -t type dev dir : ordinary mount command\n" - "Note that one does not really mount a device, one mounts\n" - "a filesystem (of the given type) found on the device.\n" - "One can also mount an already visible directory tree elsewhere:\n" - " mount --bind olddir newdir\n" - "or move a subtree:\n" - " mount --move olddir newdir\n" - "One can change the type of mount containing the directory dir:\n" - " mount --make-shared dir\n" - " mount --make-slave dir\n" - " mount --make-private dir\n" - " mount --make-unbindable dir\n" - "One can change the type of all the mounts in a mount subtree\n" - "containing the directory dir:\n" - " mount --make-rshared dir\n" - " mount --make-rslave dir\n" - " mount --make-rprivate dir\n" - " mount --make-runbindable dir\n" - "A device can be given by name, say /dev/hda1 or /dev/cdrom,\n" - "or by label, using -L label or by uuid, using -U uuid .\n" - "Other options: [-nfFrsvw] [-o options] [-p passwdfd].\n" - "For many more details, say man 8 mount .\n" - )); - - unlock_mtab(); - exit (n); -} - -/* returns mount entry from fstab */ -static struct mntentchn * -getfs(const char *spec, const char *uuid, const char *label) -{ - struct mntentchn *mc = NULL; - const char *devname = NULL; - - if (!spec && !uuid && !label) - return NULL; - - /* - * A) 99% of all cases, the spec on cmdline matches - * with spec in fstab - */ - if (uuid) - mc = getfs_by_uuid(uuid); - else if (label) - mc = getfs_by_label(label); - else { - mc = getfs_by_dir(spec); - - if (!mc) - mc = getfs_by_spec(spec); - } - if (mc) - return mc; - - /* - * B) UUID or LABEL on cmdline, but devname in fstab - */ - if (uuid) - devname = fsprobe_get_devname_by_uuid(uuid); - else if (label) - devname = fsprobe_get_devname_by_label(label); - else - devname = spec_to_devname(spec); - - if (devname) - mc = getfs_by_devname(devname); - - /* - * C) mixed - */ - if (!mc && devname) { - const char *id = NULL; - - if (!label && (!spec || strncmp(spec, "LABEL=", 6))) { - id = fsprobe_get_label_by_devname(devname); - if (id) - mc = getfs_by_label(id); - } - if (!mc && !uuid && (!spec || strncmp(spec, "UUID=", 5))) { - id = fsprobe_get_uuid_by_devname(devname); - if (id) - mc = getfs_by_uuid(id); - } - my_free(id); - - if (mc) { - /* use real device name to avoid repetitional - * conversion from LABEL/UUID to devname - */ - my_free(mc->m.mnt_fsname); - mc->m.mnt_fsname = xstrdup(devname); - } - } - - /* - * D) remount -- try /etc/mtab - * Earlier mtab was tried first, but this would sometimes try the - * wrong mount in case mtab had the root device entry wrong. Try - * the last occurrence first, since that is the visible mount. - */ - if (!mc && (devname || spec)) - mc = getmntfilebackward (devname ? devname : spec, NULL); - - my_free(devname); - return mc; -} - - -static void -print_version(int rc) { - printf( "mount from %s (with " -#ifdef HAVE_LIBBLKID - "libblkid" -#else - "libvolume_id" -#endif -#ifdef HAVE_LIBSELINUX - " and selinux" -#endif - " support)\n", PACKAGE_STRING); - exit(rc); -} - -int -main(int argc, char *argv[]) { - int c, result = 0, specseen; - char *options = NULL, *test_opts = NULL, *node; - const char *spec = NULL; - char *label = NULL; - char *uuid = NULL; - char *types = NULL; - char *p; - struct mntentchn *mc; - int fd; - - sanitize_env(); - setlocale(LC_ALL, ""); - bindtextdomain(PACKAGE, LOCALEDIR); - textdomain(PACKAGE); - atexit(close_stdout); - - progname = argv[0]; - if ((p = strrchr(progname, '/')) != NULL) - progname = p+1; - - umask(022); - - /* People report that a mount called from init without console - writes error messages to /etc/mtab - Let us try to avoid getting fd's 0,1,2 */ - while((fd = open("/dev/null", O_RDWR)) == 0 || fd == 1 || fd == 2) ; - if (fd > 2) - close(fd); - - fsprobe_init(); - -#ifdef DO_PS_FIDDLING - initproctitle(argc, argv); -#endif - - while ((c = getopt_long (argc, argv, "aBfFhilL:Mno:O:p:rRsU:vVwt:", - longopts, NULL)) != -1) { - switch (c) { - case 'a': /* mount everything in fstab */ - ++mount_all; - break; - case 'B': /* bind */ - mounttype = MS_BIND; - break; - case 'f': /* fake: don't actually call mount(2) */ - ++fake; - break; - case 'F': - ++optfork; - break; - case 'h': /* help */ - usage (stdout, 0); - break; - case 'i': - external_allowed = 0; - break; - case 'l': - list_with_volumelabel = 1; - break; - case 'L': - label = optarg; - break; - case 'M': /* move */ - mounttype = MS_MOVE; - break; - case 'n': /* do not write /etc/mtab */ - ++nomtab; - break; - case 'o': /* specify mount options */ - options = append_opt(options, optarg, NULL); - break; - case 'O': /* with -t: mount only if (not) opt */ - test_opts = append_opt(test_opts, optarg, NULL); - break; - case 'p': /* fd on which to read passwd */ - error("mount: %s", _("--pass-fd is no longer supported")); - break; - case 'r': /* mount readonly */ - readonly = 1; - readwrite = 0; - break; - case 'R': /* rbind */ - mounttype = (MS_BIND | MS_REC); - break; - case 's': /* allow sloppy mount options */ - sloppy = 1; - break; - case 't': /* specify file system types */ - types = optarg; - break; - case 'U': - uuid = optarg; - break; - case 'v': /* be chatty - more so if repeated */ - ++verbose; - break; - case 'V': /* version */ - print_version(EXIT_SUCCESS); - break; - case 'w': /* mount read/write */ - readwrite = 1; - readonly = 0; - break; - case 0: - break; - - case 136: - mounttype = MS_SHARED; - break; - - case 137: - mounttype = MS_SLAVE; - break; - - case 138: - mounttype = MS_PRIVATE; - break; - - case 139: - mounttype = MS_UNBINDABLE; - break; - - case 140: - mounttype = (MS_SHARED | MS_REC); - break; - - case 141: - mounttype = (MS_SLAVE | MS_REC); - break; - - case 142: - mounttype = (MS_PRIVATE | MS_REC); - break; - - case 143: - mounttype = (MS_UNBINDABLE | MS_REC); - break; - case 144: - nocanonicalize = 1; - break; - case '?': - default: - usage (stderr, EX_USAGE); - } - } - - if (verbose > 2) { - printf("mount: fstab path: \"%s\"\n", _PATH_MNTTAB); - printf("mount: mtab path: \"%s\"\n", _PATH_MOUNTED); - printf("mount: lock path: \"%s\"\n", _PATH_MOUNTED_LOCK); - printf("mount: temp path: \"%s\"\n", _PATH_MOUNTED_TMP); - printf("mount: UID: %u\n", getuid()); - printf("mount: eUID: %u\n", geteuid()); - } - - argc -= optind; - argv += optind; - - specseen = (uuid || label) ? 1 : 0; /* yes, .. i know */ - - if (argc+specseen == 0 && !mount_all) { - if (options || mounttype) - usage (stderr, EX_USAGE); - return print_all (types); - } - - { - const uid_t ruid = getuid(); - const uid_t euid = geteuid(); - - /* if we're really root and aren't running setuid */ - if (((uid_t)0 == ruid) && (ruid == euid)) { - restricted = 0; - } - - if (restricted && - (types || options || readwrite || nomtab || mount_all || - nocanonicalize || fake || mounttype || - (argc + specseen) != 1)) { - - if (ruid == 0 && euid != 0) - /* user is root, but setuid to non-root */ - die (EX_USAGE, _("mount: only root can do that " - "(effective UID is %u)"), euid); - - die (EX_USAGE, _("mount: only root can do that")); - } - } - - atexit(unlock_mtab); - - switch (argc+specseen) { - case 0: - /* mount -a */ - result = do_mount_all (types, options, test_opts); - if (result == 0 && verbose && !fake) - error(_("nothing was mounted")); - break; - - case 1: - /* mount [-nfrvw] [-o options] special | node - * mount -L label (or -U uuid) - * (/etc/fstab is necessary) - */ - if (types != NULL) - usage (stderr, EX_USAGE); - - if (uuid || label) - mc = getfs(NULL, uuid, label); - else - mc = getfs(*argv, NULL, NULL); - - if (!mc) { - if (uuid || label) - die (EX_USAGE, _("mount: no such partition found")); - - die (EX_USAGE, - _("mount: can't find %s in %s or %s"), - *argv, _PATH_MNTTAB, _PATH_MOUNTED); - } - - result = mount_one (xstrdup (mc->m.mnt_fsname), - xstrdup (mc->m.mnt_dir), - xstrdup (mc->m.mnt_type), - mc->m.mnt_opts, options, 0, 0); - break; - - case 2: - /* mount special node (/etc/fstab is not necessary) */ - if (specseen) { - /* mount -L label node (or -U uuid) */ - spec = uuid ? fsprobe_get_devname_by_uuid(uuid) : - fsprobe_get_devname_by_label(label); - node = argv[0]; - } else { - /* mount special node */ - spec = argv[0]; - node = argv[1]; - } - if (!spec) - die (EX_USAGE, _("mount: no such partition found")); - - result = mount_one (spec, node, types, NULL, options, 0, 0); - break; - - default: - usage (stderr, EX_USAGE); - } - - if (result == EX_SOMEOK) - result = 0; - - fsprobe_exit(); - - exit (result); -} diff --git a/mount-deprecated/mount_constants.h b/mount-deprecated/mount_constants.h deleted file mode 100644 index ce51887dd..000000000 --- a/mount-deprecated/mount_constants.h +++ /dev/null @@ -1,73 +0,0 @@ -#ifndef MS_RDONLY -#define MS_RDONLY 1 /* Mount read-only */ -#endif -#ifndef MS_NOSUID -#define MS_NOSUID 2 /* Ignore suid and sgid bits */ -#endif -#ifndef MS_NODEV -#define MS_NODEV 4 /* Disallow access to device special files */ -#endif -#ifndef MS_NOEXEC -#define MS_NOEXEC 8 /* Disallow program execution */ -#endif -#ifndef MS_SYNCHRONOUS -#define MS_SYNCHRONOUS 16 /* Writes are synced at once */ -#endif -#ifndef MS_REMOUNT -#define MS_REMOUNT 32 /* Alter flags of a mounted FS */ -#endif -#ifndef MS_MANDLOCK -#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ -#endif -#ifndef MS_DIRSYNC -#define MS_DIRSYNC 128 /* Directory modifications are synchronous */ -#endif -#ifndef MS_NOATIME -#define MS_NOATIME 0x400 /* 1024: Do not update access times. */ -#endif -#ifndef MS_NODIRATIME -#define MS_NODIRATIME 0x800 /* 2048: Don't update directory access times */ -#endif -#ifndef MS_BIND -#define MS_BIND 0x1000 /* 4096: Mount existing tree also elsewhere */ -#endif -#ifndef MS_MOVE -#define MS_MOVE 0x2000 /* 8192: Atomically move tree */ -#endif -#ifndef MS_REC -#define MS_REC 0x4000 /* 16384: Recursive loopback */ -#endif -#ifndef MS_SILENT -#define MS_SILENT 0x8000 /* 32768 (was MS_VERBOSE) */ -#endif -#ifndef MS_RELATIME -#define MS_RELATIME 0x200000 /* 200000: Update access times relative - to mtime/ctime */ -#endif -#ifndef MS_UNBINDABLE -#define MS_UNBINDABLE (1<<17) /* 131072 unbindable*/ -#endif -#ifndef MS_PRIVATE -#define MS_PRIVATE (1<<18) /* 262144 Private*/ -#endif -#ifndef MS_SLAVE -#define MS_SLAVE (1<<19) /* 524288 Slave*/ -#endif -#ifndef MS_SHARED -#define MS_SHARED (1<<20) /* 1048576 Shared*/ -#endif -#ifndef MS_I_VERSION -#define MS_I_VERSION (1<<23) /* update inode I_version field */ -#endif -#ifndef MS_STRICTATIME -#define MS_STRICTATIME (1<<24) /* strict atime semantics */ -#endif -/* - * Magic mount flag number. Had to be or-ed to the flag values. - */ -#ifndef MS_MGC_VAL -#define MS_MGC_VAL 0xC0ED0000 /* magic flag number to indicate "new" flags */ -#endif -#ifndef MS_MGC_MSK -#define MS_MGC_MSK 0xffff0000 /* magic flag number mask */ -#endif diff --git a/mount-deprecated/mount_mntent.c b/mount-deprecated/mount_mntent.c deleted file mode 100644 index b5bdd90f8..000000000 --- a/mount-deprecated/mount_mntent.c +++ /dev/null @@ -1,165 +0,0 @@ -/* Private version of the libc *mntent() routines. */ -/* Note slightly different prototypes. */ - -/* 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL> - * - added Native Language Support - */ - -#include <stdio.h> -#include <string.h> /* for index */ -#include <ctype.h> /* for isdigit */ -#include <sys/stat.h> /* for umask */ - -#include "mount_mntent.h" -#include "sundries.h" /* for xmalloc */ -#include "nls.h" -#include "mangle.h" -#include "closestream.h" - -static int -is_space_or_tab (char c) { - return (c == ' ' || c == '\t'); -} - -static char * -skip_spaces(char *s) { - while (is_space_or_tab(*s)) - s++; - return s; -} - -/* - * fstat'ing the file and allocating a buffer holding all of it - * may be a bad idea: if the file is /proc/mounts, the stat - * returns 0. - * (On the other hand, mangling and unmangling is meaningless - * for /proc/mounts.) - */ - -mntFILE * -my_setmntent (const char *file, char *mode) { - mntFILE *mfp = xmalloc(sizeof(*mfp)); - mode_t old_umask = umask(077); - - mfp->mntent_fp = fopen(file, mode); - umask(old_umask); - mfp->mntent_file = xstrdup(file); - mfp->mntent_errs = (mfp->mntent_fp == NULL); - mfp->mntent_softerrs = 0; - mfp->mntent_lineno = 0; - return mfp; -} - -void -my_endmntent(mntFILE * mfp) { - if (mfp) { - if (mfp->mntent_fp) - if (close_stream(mfp->mntent_fp)) - fprintf(stderr, _("write error")); - free(mfp->mntent_file); - free(mfp); - } -} - -int -my_addmntent (mntFILE *mfp, struct my_mntent *mnt) { - char *m1, *m2, *m3, *m4; - int res; - - if (fseek (mfp->mntent_fp, 0, SEEK_END)) - return 1; /* failure */ - - m1 = mangle(mnt->mnt_fsname); - m2 = mangle(mnt->mnt_dir); - m3 = mangle(mnt->mnt_type); - m4 = mnt->mnt_opts ? mangle(mnt->mnt_opts) : "rw"; - - res = fprintf (mfp->mntent_fp, "%s %s %s %s %d %d\n", - m1, m2, m3, m4, mnt->mnt_freq, mnt->mnt_passno); - - free(m1); - free(m2); - free(m3); - if (mnt->mnt_opts) - free(m4); - return (res < 0) ? 1 : 0; -} - -/* Read the next entry from the file fp. Stop reading at an incorrect entry. */ -struct my_mntent * -my_getmntent (mntFILE *mfp) { - static char buf[4096]; - static struct my_mntent me; - char *s; - - again: - if (mfp->mntent_errs || mfp->mntent_softerrs >= ERR_MAX) - return NULL; - - /* read the next non-blank non-comment line */ - do { - if (fgets (buf, sizeof(buf), mfp->mntent_fp) == NULL) - return NULL; - - mfp->mntent_lineno++; - s = strchr (buf, '\n'); - if (s == NULL) { - /* Missing final newline? Otherwise extremely */ - /* long line - assume file was corrupted */ - if (feof(mfp->mntent_fp)) { - fprintf(stderr, _("[mntent]: warning: no final " - "newline at the end of %s\n"), - mfp->mntent_file); - s = strchr (buf, 0); - } else { - mfp->mntent_errs = 1; - goto err; - } - } - *s = 0; - if (--s >= buf && *s == '\r') - *s = 0; - s = skip_spaces(buf); - } while (*s == '\0' || *s == '#'); - - me.mnt_fsname = unmangle(s, &s); - s = skip_spaces(s); - me.mnt_dir = unmangle(s, &s); - s = skip_spaces(s); - me.mnt_type = unmangle(s, &s); - s = skip_spaces(s); - me.mnt_opts = unmangle(s, &s); - s = skip_spaces(s); - - if (!me.mnt_fsname || !me.mnt_dir || !me.mnt_type) - goto err; - - if (isdigit(*s)) { - me.mnt_freq = atoi(s); - while(isdigit(*s)) s++; - } else - me.mnt_freq = 0; - if(*s && !is_space_or_tab(*s)) - goto err; - - s = skip_spaces(s); - if(isdigit(*s)) { - me.mnt_passno = atoi(s); - while(isdigit(*s)) s++; - } else - me.mnt_passno = 0; - if(*s && !is_space_or_tab(*s)) - goto err; - - /* allow more stuff, e.g. comments, on this line */ - - return &me; - - err: - mfp->mntent_softerrs++; - fprintf(stderr, _("[mntent]: line %d in %s is bad%s\n"), - mfp->mntent_lineno, mfp->mntent_file, - (mfp->mntent_errs || mfp->mntent_softerrs >= ERR_MAX) ? - _("; rest of file ignored") : ""); - goto again; -} diff --git a/mount-deprecated/mount_mntent.h b/mount-deprecated/mount_mntent.h deleted file mode 100644 index 3b7421535..000000000 --- a/mount-deprecated/mount_mntent.h +++ /dev/null @@ -1,28 +0,0 @@ -#ifndef MOUNT_MNTENT_H -#define MOUNT_MNTENT_H - -struct my_mntent { - const char *mnt_fsname; - const char *mnt_dir; - const char *mnt_type; - const char *mnt_opts; - int mnt_freq; - int mnt_passno; -}; - -#define ERR_MAX 5 - -typedef struct mntFILEstruct { - FILE *mntent_fp; - char *mntent_file; - int mntent_lineno; - int mntent_errs; - int mntent_softerrs; -} mntFILE; - -mntFILE *my_setmntent (const char *file, char *mode); -void my_endmntent (mntFILE *mfp); -int my_addmntent (mntFILE *mfp, struct my_mntent *mnt); -struct my_mntent *my_getmntent (mntFILE *mfp); - -#endif /* MOUNT_MNTENT_H */ diff --git a/mount-deprecated/sundries.c b/mount-deprecated/sundries.c deleted file mode 100644 index 371043967..000000000 --- a/mount-deprecated/sundries.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * Support functions. Exported functions are prototyped in sundries.h. - * - * added fcntl locking by Kjetil T. (kjetilho@math.uio.no) - aeb, 950927 - * - * 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL> - * - added Native Language Support - * - */ -#include <unistd.h> -#include <stdio.h> -#include <string.h> -#include <mntent.h> /* for MNTTYPE_SWAP */ - -#include "canonicalize.h" - -#include "sundries.h" -#include "nls.h" - -int mount_quiet; -int verbose; -int nocanonicalize; -char *progname; - -/* reallocates its first arg - typical use: s = xstrconcat3(s,t,u); */ -char * -xstrconcat3 (char *s, const char *t, const char *u) { - size_t len = 0; - - len = (s ? strlen(s) : 0) + (t ? strlen(t) : 0) + (u ? strlen(u) : 0); - - if (!len) - return NULL; - if (!s) { - s = xmalloc(len + 1); - *s = '\0'; - } - else - s = xrealloc(s, len + 1); - if (t) - strcat(s, t); - if (u) - strcat(s, u); - return s; -} - -/* frees its first arg - typical use: s = xstrconcat4(s,t,u,v); */ -char * -xstrconcat4 (char *s, const char *t, const char *u, const char *v) { - size_t len = 0; - - len = (s ? strlen(s) : 0) + (t ? strlen(t) : 0) + - (u ? strlen(u) : 0) + (v ? strlen(v) : 0); - - if (!len) - return NULL; - if (!s) { - s = xmalloc(len + 1); - *s = '\0'; - } - else - s = xrealloc(s, len + 1); - if (t) - strcat(s, t); - if (u) - strcat(s, u); - if (v) - strcat(s, v); - return s; - - -} - -/* Call this with SIG_BLOCK to block and SIG_UNBLOCK to unblock. */ -void -block_signals (int how) { - sigset_t sigs; - - sigfillset (&sigs); - sigdelset(&sigs, SIGTRAP); - sigdelset(&sigs, SIGSEGV); - sigprocmask (how, &sigs, (sigset_t *) 0); -} - - -/* Non-fatal error. Print message and return. */ -/* (print the message in a single printf, in an attempt - to avoid mixing output of several threads) */ -void -error (const char *fmt, ...) { - va_list args; - - if (mount_quiet) - return; - va_start (args, fmt); - vfprintf (stderr, fmt, args); - va_end (args); - fputc('\n', stderr); -} - -/* Fatal error. Print message and exit. */ -void __attribute__ ((noreturn)) die(int err, const char *fmt, ...) -{ - va_list args; - - va_start(args, fmt); - vfprintf(stderr, fmt, args); - fprintf(stderr, "\n"); - va_end(args); - - exit(err); -} - -/* True if fstypes match. Null *TYPES means match anything, - except that swap types always return false. */ -/* Accept nonfs,proc,devpts and nonfs,noproc,nodevpts - with the same meaning. */ -int -matching_type (const char *type, const char *types) { - int no; /* negated types list */ - int len; - const char *p; - - if (streq (type, MNTTYPE_SWAP)) - return 0; - if (types == NULL) - return 1; - - no = 0; - if (!strncmp(types, "no", 2)) { - no = 1; - types += 2; - } - - /* Does type occur in types, separated by commas? */ - len = strlen(type); - p = types; - while(1) { - if (!strncmp(p, "no", 2) && !strncmp(p+2, type, len) && - (p[len+2] == 0 || p[len+2] == ',')) - return 0; - if (strncmp(p, type, len) == 0 && - (p[len] == 0 || p[len] == ',')) - return !no; - p = strchr(p,','); - if (!p) - break; - p++; - } - return no; -} - -/* Returns 1 if needle found or noneedle not found in haystack - * Otherwise returns 0 - */ -static int -check_option(const char *haystack, const char *needle) { - const char *p, *r; - int len, needle_len, this_len; - int no; - - no = 0; - if (!strncmp(needle, "no", 2)) { - no = 1; - needle += 2; - } - needle_len = strlen(needle); - len = strlen(haystack); - - for (p = haystack; p < haystack+len; p++) { - r = strchr(p, ','); - if (r) { - this_len = r-p; - } else { - this_len = strlen(p); - } - if (this_len != needle_len) { - p += this_len; - continue; - } - if (strncmp(p, needle, this_len) == 0) - return !no; /* foo or nofoo was found */ - p += this_len; - } - - return no; /* foo or nofoo was not found */ -} - - -/* Returns 1 if each of the test_opts options agrees with the entire - * list of options. - * Returns 0 if any noopt is found in test_opts and opt is found in options. - * Returns 0 if any opt is found in test_opts but is not found in options. - * Unlike fs type matching, nonetdev,user and nonetdev,nouser have - * DIFFERENT meanings; each option is matched explicitly as specified. - */ -int -matching_opts (const char *options, const char *test_opts) { - const char *p, *r; - char *q; - int len, this_len; - - if (test_opts == NULL) - return 1; - if (options == NULL) - options = ""; - - len = strlen(test_opts); - q = alloca(len+1); - if (q == NULL) - die (EX_SYSERR, _("not enough memory")); - - for (p = test_opts; p < test_opts+len; p++) { - r = strchr(p, ','); - if (r) { - this_len = r-p; - } else { - this_len = strlen(p); - } - if (!this_len) continue; /* if two ',' appear in a row */ - strncpy(q, p, this_len); - q[this_len] = '\0'; - if (!check_option(options, q)) - return 0; /* any match failure means failure */ - p += this_len; - } - - /* no match failures in list means success */ - return 1; -} - -int -is_pseudo_fs(const char *type) -{ - if (type == NULL || *type == '/') - return 0; - if (streq(type, "none") || - streq(type, "proc") || - streq(type, "tmpfs") || - streq(type, "sysfs") || - streq(type, "usbfs") || - streq(type, "cgroup") || - streq(type, "cpuset") || - streq(type, "rpc_pipefs") || - streq(type, "devpts") || - streq(type, "securityfs") || - streq(type, "debugfs")) - return 1; - return 0; -} - -/* Make a canonical pathname from PATH. Returns a freshly malloced string. - It is up the *caller* to ensure that the PATH is sensible. i.e. - canonicalize ("/dev/fd0/.") returns "/dev/fd0" even though ``/dev/fd0/.'' - is not a legal pathname for ``/dev/fd0''. Anything we cannot parse - we return unmodified. */ -char * -canonicalize_spec (const char *path) -{ - char *res; - - if (!path) - return NULL; - if (nocanonicalize || is_pseudo_fs(path)) - return xstrdup(path); - - res = canonicalize_path(path); - if (!res) - die(EX_SYSERR, _("not enough memory")); - return res; -} - -char *canonicalize (const char *path) -{ - char *res; - - if (!path) - return NULL; - else if (nocanonicalize) - return xstrdup(path); - - res = canonicalize_path(path); - if (!res) - die(EX_SYSERR, _("not enough memory")); - return res; -} diff --git a/mount-deprecated/sundries.h b/mount-deprecated/sundries.h deleted file mode 100644 index 428d4a209..000000000 --- a/mount-deprecated/sundries.h +++ /dev/null @@ -1,54 +0,0 @@ -/* - * sundries.h - * Support function prototypes. Functions are in sundries.c. - */ -#ifndef SUNDRIES_H -#define SUNDRIES_H - -#include <stdio.h> -#include <sys/types.h> -#include <fcntl.h> -#include <limits.h> -#include <signal.h> -#include <stdarg.h> -#include <stdlib.h> - -#define XALLOC_EXIT_CODE 2 /* same as EX_SYSERR, for backwards compatibility */ -#include "xalloc.h" - -/* global mount, umount, and losetup variables */ -extern int mount_quiet; -extern int verbose; -extern int nocanonicalize; -extern char *progname; - -#define streq(s, t) (strcmp ((s), (t)) == 0) -#define my_free(_p) free((void *) _p) - -void block_signals (int how); - -void error (const char *fmt, ...) - __attribute__ ((__format__ (__printf__, 1, 2))); -void die(int err, const char *fmt, ...) - __attribute__ ((__format__ (__printf__, 2, 3))); - -int matching_type (const char *type, const char *types); -int matching_opts (const char *options, const char *test_opts); -char *xstrconcat3 (char *, const char *, const char *); -char *xstrconcat4 (char *, const char *, const char *, const char *); - -int is_pseudo_fs(const char *type); - -char *canonicalize (const char *path); -char *canonicalize_spec (const char *path); - -/* exit status - bits below are ORed */ -#define EX_USAGE 1 /* incorrect invocation or permission */ -#define EX_SYSERR 2 /* out of memory, cannot fork, ... */ -#define EX_SOFTWARE 4 /* internal mount bug or wrong version */ -#define EX_USER 8 /* user interrupt */ -#define EX_FILEIO 16 /* problems writing, locking, ... mtab/fstab */ -#define EX_FAIL 32 /* mount failure */ -#define EX_SOMEOK 64 /* some mount succeeded */ - -#endif /* SUNDRIES_H */ diff --git a/mount-deprecated/umount.8 b/mount-deprecated/umount.8 deleted file mode 100644 index 4cbddc512..000000000 --- a/mount-deprecated/umount.8 +++ /dev/null @@ -1,179 +0,0 @@ -.\" Copyright (c) 1996 Andries Brouwer -.\" This page is somewhat derived from a page that was -.\" (c) 1980, 1989, 1991 The Regents of the University of California -.\" and had been heavily modified by Rik Faith and myself. -.\" -.\" This is free documentation; you can redistribute it and/or -.\" modify it under the terms of the GNU General Public License as -.\" published by the Free Software Foundation; either version 2 of -.\" the License, or (at your option) any later version. -.\" -.\" The GNU General Public License's references to "object code" -.\" and "executables" are to be interpreted as the output of any -.\" document formatting or typesetting system, including -.\" intermediate and printed output. -.\" -.\" This manual is distributed in the hope that it will be useful, -.\" but WITHOUT ANY WARRANTY; without even the implied warranty of -.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -.\" GNU General Public License for more details. -.\" -.\" You should have received a copy of the GNU General Public License along -.\" with this program; if not, write to the Free Software Foundation, Inc., -.\" 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -.\" -.TH UMOUNT 8 "March 2010" "util-linux" "System Administration" -.SH NAME -umount \- unmount file systems -.SH SYNOPSIS -.B umount -.RB [ \-hV ] -.LP -.B umount \-a -.RB [ \-dflnrv ] -.RB [ \-t -.IR vfstype ] -.RB [ \-O -.IR options ] -.br -.B umount -.RB [ \-dflnrv ] -.RI { dir | device }... -.SH DESCRIPTION -The -.B umount -command detaches the file system(s) mentioned from the file hierarchy. -A file system is specified by giving the directory where it -has been mounted. Giving the special device on which the file system lives -may also work, but is obsolete, mainly because it will fail -in case this device was mounted on more than one directory. - -Note that a file system cannot be unmounted when it is `busy' - -for example, when there are open files on it, or when some process -has its working directory there, or when a swap file on it is in use. -The offending process could even be -.B umount -itself - it opens libc, and libc in its turn may open for example -locale files. -A lazy unmount avoids this problem. - -Options for the -.B umount -command: -.TP -.B \-V -Print version and exit. -.TP -.B \-h -Print help message and exit. -.TP -.B \-v -Verbose mode. -.TP -.B \-n -Unmount without writing in -.IR /etc/mtab . -.TP -.B \-r -In case unmounting fails, try to remount read-only. -.TP -.B \-d -In case the unmounted device was a loop device, also -free this loop device. -.TP -.B \-i -Don't call the /sbin/umount.<filesystem> helper even if it exists. By default /sbin/umount.<filesystem> helper is called if one exists. -.TP -.B \-a -All of the file systems described in -.I /etc/mtab -are unmounted. (With -.B umount -version 2.7 and later: the -.I proc -filesystem is not unmounted.) -.TP -.BI \-t " vfstype" -Indicate that the actions should only be taken on file systems of the -specified type. More than one type may be specified in a comma separated -list. The list of file system types can be prefixed with -.B no -to specify the file system types on which no action should be taken. -.TP -.BI \-O " options" -Indicate that the actions should only be taken on file systems with -the specified options in -.IR /etc/fstab . -More than one option type may be specified in a comma separated -list. Each option can be prefixed with -.B no -to specify options for which no action should be taken. -.TP -.B \-f -Force unmount (in case of an unreachable NFS system). -(Requires kernel 2.1.116 or later.) -.TP -.B \-l -Lazy unmount. Detach the filesystem from the filesystem hierarchy now, -and cleanup all references to the filesystem as soon as it is not busy -anymore. -(Requires kernel 2.4.11 or later.) -.IP "\fB\-\-no\-canonicalize\fP" -Don't canonicalize paths. For more details about this option see the -.BR mount (8) -man page. -.IP "\fB\-\-fake\fP" -Causes everything to be done except for the actual system call; this -``fakes'' unmounting the filesystem. It can be used to remove -entries from -.I /etc/mtab -that were unmounted earlier with the -n option. - -.SH "THE LOOP DEVICE" -The -.B umount -command will free the loop device (if any) associated -with the mount, in case it finds the option `loop=...' in -.IR /etc/mtab , -or when the \-d option was given. -Any pending loop devices can be freed using `losetup -d', see -.BR losetup (8). - -.SH NOTES -The syntax of external umount helpers is: - -.br -.BI /sbin/umount. <suffix> -.RI { dir | device } -.RB [ \-nlfvr ] -.RB [ \-t -.IR type.subtype ] -.br - -where the <suffix> is filesystem type or a value from "uhelper=" or "helper=" -mtab option. The \-t option is used for filesystems with subtypes support -(for example /sbin/mount.fuse -t fuse.sshfs). - -The uhelper= (unprivileged umount helper) is possible to use when non-root user -wants to umount a mountpoint which is not defined in the /etc/fstab file (e.g -devices mounted by udisk). - -The helper= mount option redirects all umount requests to the -/sbin/umount.<helper> independently on UID. - -.SH FILES -.I /etc/mtab -table of mounted file systems - -.SH "SEE ALSO" -.BR umount (2), -.BR mount (8), -.BR losetup (8). - -.SH HISTORY -A -.B umount -command appeared in Version 6 AT&T UNIX. -.SH AVAILABILITY -The umount command is part of the util-linux package and is available from -ftp://ftp.kernel.org/pub/linux/utils/util-linux/. diff --git a/mount-deprecated/umount.c b/mount-deprecated/umount.c deleted file mode 100644 index 97a76811d..000000000 --- a/mount-deprecated/umount.c +++ /dev/null @@ -1,867 +0,0 @@ -/* - * umount(8) for Linux 0.99 - jrs, 1993 - */ - -#include <stdio.h> -#include <unistd.h> -#include <getopt.h> -#include <string.h> -#include <errno.h> -#include <ctype.h> -#include <sys/stat.h> -#include <sys/wait.h> -#include <sys/mount.h> - -#include "mount_constants.h" -#include "sundries.h" -#include "getusername.h" -#include "pathnames.h" -#include "loopdev.h" -#include "fstab.h" -#include "env.h" -#include "nls.h" -#include "strutils.h" -#include "closestream.h" - -#if defined(MNT_FORCE) -/* Interesting ... it seems libc knows about MNT_FORCE and presumably - about umount2 as well -- need not do anything */ -#else /* MNT_FORCE */ - -/* Does the present kernel source know about umount2? */ -#include <linux/unistd.h> -#ifdef __NR_umount2 - -static int umount2(const char *path, int flags); - -_syscall2(int, umount2, const char *, path, int, flags); - -#else /* __NR_umount2 */ - -static int -umount2(const char *path, int flags) { - fprintf(stderr, _("umount: compiled without support for -f\n")); - errno = ENOSYS; - return -1; -} -#endif /* __NR_umount2 */ - -#ifndef MNT_FORCE -# define MNT_FORCE 0x00000001 /* Attempt to forcibily umount */ -#endif - -#endif /* MNT_FORCE */ - -#ifndef MNT_DETACH -# define MNT_DETACH 0x00000002 /* Just detach from the tree */ -#endif - -#ifndef UMOUNT_NOFOLLOW -# define UMOUNT_NOFOLLOW 0x00000008 /* Don't follow symlink on umount */ -#endif - -#ifndef UMOUNT_UNUSED -# define UMOUNT_UNUSED 0x80000000 /* Flag guaranteed to be unused */ -#endif - - -/* True if we are allowed to call /sbin/umount.${FSTYPE} */ -int external_allowed = 1; - -/* Nonzero for force umount (-f). There is kernel support since 2.1.116. */ -int force = 0; - -/* Nonzero for lazy umount (-l). There is kernel support since 2.4.11. */ -int lazy = 0; - -/* When umount fails, attempt a read-only remount (-r). */ -int remount = 0; - -/* Don't write a entry in /etc/mtab (-n). */ -int nomtab = 0; - -/* Call losetup -d for each unmounted loop device. */ -int delloop = 0; - -/* True if (ruid != euid) or (0 != ruid), i.e. only "user" umounts permitted. */ -int restricted = 1; - -/* Last error message */ -int complained_err = 0; -char *complained_dev = NULL; - -/* True for fake umount (--fake). */ -static int fake = 0; - -/* - * check_special_umountprog() - * If there is a special umount program for this type, exec it. - * returns: 0: no exec was done, 1: exec was done, status has result - */ -static int -check_special_umountprog(const char *node, - const char *type, int *status) { - char search_path[] = FS_SEARCH_PATH; - char *path, umountprog[150]; - struct stat statbuf; - int res; - - if (!external_allowed) - return 0; - - if (type == NULL || strcmp(type, "none") == 0) - return 0; - - path = strtok(search_path, ":"); - while (path) { - int type_opt = 0; - - res = snprintf(umountprog, sizeof(umountprog), "%s/umount.%s", - path, type); - path = strtok(NULL, ":"); - if (res < 0 || (size_t) res >= sizeof(umountprog)) - continue; - - res = stat(umountprog, &statbuf); - if (res == -1 && errno == ENOENT && strchr(type, '.')) { - /* If type ends with ".subtype" try without it */ - *strrchr(umountprog, '.') = '\0'; - type_opt = 1; - res = stat(umountprog, &statbuf); - } - if (res == 0) { - res = fork(); - if (res == 0) { - char *umountargs[10]; - int i = 0; - - if(setgid(getgid()) < 0) - die(EX_FAIL, _("umount: cannot set group id: %m")); - - if(setuid(getuid()) < 0) - die(EX_FAIL, _("umount: cannot set user id: %m")); - - umountargs[i++] = umountprog; - umountargs[i++] = xstrdup(node); - if (nomtab) - umountargs[i++] = "-n"; - if (lazy) - umountargs[i++] = "-l"; - if (force) - umountargs[i++] = "-f"; - if (verbose) - umountargs[i++] = "-v"; - if (remount) - umountargs[i++] = "-r"; - if (type_opt) { - umountargs[i++] = "-t"; - umountargs[i++] = (char *) type; - } - umountargs[i] = NULL; - execv(umountprog, umountargs); - exit(1); /* exec failed */ - } else if (res != -1) { - int st; - wait(&st); - *status = (WIFEXITED(st) ? WEXITSTATUS(st) - : EX_SYSERR); - return 1; - } else { - int errsv = errno; - error(_("umount: cannot fork: %s"), - strerror(errsv)); - } - } - } - return 0; -} - -/* complain about a failed umount */ -static void complain(int err, const char *dev) { - - if (complained_err == err && complained_dev && dev && - strcmp(dev, complained_dev) == 0) - return; - - complained_err = err; - free(complained_dev); - complained_dev = xstrdup(dev); - - switch (err) { - case ENXIO: - error (_("umount: %s: invalid block device"), dev); break; - case EINVAL: - error (_("umount: %s: not mounted"), dev); break; - case EIO: - error (_("umount: %s: can't write superblock"), dev); break; - case EBUSY: - /* Let us hope fstab has a line "proc /proc ..." - and not "none /proc ..."*/ - error (_("umount: %s: device is busy.\n" - " (In some cases useful info about processes that use\n" - " the device is found by lsof(8) or fuser(1))"), dev); - break; - case ENOENT: - error (_("umount: %s: not found"), dev); break; - case EPERM: - error (_("umount: %s: must be superuser to umount"), dev); break; - case EACCES: - error (_("umount: %s: block devices not permitted on fs"), dev); break; - default: - error (_("umount: %s: %s"), dev, strerror (err)); break; - } -} - -/* Check whether the kernel supports UMOUNT_NOFOLLOW flag */ -static int umount_nofollow_support(void) -{ - int res = umount2("", UMOUNT_UNUSED); - if (res != -1 || errno != EINVAL) - return 0; - - res = umount2("", UMOUNT_NOFOLLOW); - if (res != -1 || errno != ENOENT) - return 0; - - return 1; -} - -static const char *chdir_to_parent(const char *node, char **resbuf) -{ - char *tmp, *res; - const char *parent; - char buf[65536]; - - *resbuf = xstrdup(node); - - tmp = strrchr(*resbuf, '/'); - if (!tmp) - die (2, _("umount: internal error: invalid abs path: %s"), node); - - if (tmp != *resbuf) { - *tmp = '\0'; - res = tmp + 1; - parent = *resbuf; - } else if (tmp[1] != '\0') { - res = tmp + 1; - parent = "/"; - } else { - res = "."; - parent = "/"; - } - - if (chdir(parent) == -1) - die (2, _("umount: failed to chdir to %s: %m"), parent); - - if (!getcwd(buf, sizeof(buf))) - die (2, _("umount: failed to obtain current directory: %m")); - - if (strcmp(buf, parent) != 0) - die (2, _("umount: mountpoint moved (%s -> %s)"), parent, buf); - - if (verbose) - printf(_("current directory moved to %s\n"), res); - - return res; -} - -/* Umount a single device. Return a status code, so don't exit - on a non-fatal error. We lock/unlock around each umount. */ -static int -umount_one (const char *spec, const char *node, const char *type, - struct mntentchn *mc) { - int umnt_err = 0; - int isroot; - int res = 0; - int status; - int extra_flags = 0; - const char *loopdev, *target = node; - char *targetbuf = NULL; - - /* Special case for root. As of 0.99pl10 we can (almost) unmount root; - the kernel will remount it readonly so that we can carry on running - afterwards. The readonly remount is illegal if any files are opened - for writing at the time, so we can't update mtab for an unmount of - root. As it is only really a remount, this doesn't matter too - much. [sct May 29, 1993] */ - isroot = (streq (node, "/") || streq (node, "root") - || streq (node, "rootfs")); - if (isroot) - nomtab++; - - /* - * Call umount.TYPE for types that require a separate umount program. - * All such special things must occur isolated in the types string. - */ - if (check_special_umountprog(node, type, &status)) - return status; - - block_signals(SIG_BLOCK); - - /* Skip the actual umounting for --fake */ - if (fake) - goto writemtab; - - if (restricted) { - if (umount_nofollow_support()) - extra_flags |= UMOUNT_NOFOLLOW; - - /* call umount(2) with relative path to avoid races */ - target = chdir_to_parent(node, &targetbuf); - } - - if (lazy) { - res = umount2 (target, MNT_DETACH | extra_flags); - if (res < 0) - umnt_err = errno; - goto writemtab; - } - - if (force) { /* only supported for NFS */ - res = umount2 (target, MNT_FORCE | extra_flags); - if (res == -1) { - int errsv = errno; - perror("umount2"); - errno = errsv; - if (errno == ENOSYS) { - if (verbose) - printf(_("no umount2, trying umount...\n")); - res = umount (target); - } - } - } else if (extra_flags) - res = umount2 (target, extra_flags); - else - res = umount (target); - - free(targetbuf); - - if (res < 0) - umnt_err = errno; - - if (res < 0 && remount && umnt_err == EBUSY) { - /* Umount failed - let us try a remount */ - res = mount(spec, node, NULL, - MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL); - if (res == 0) { - fprintf(stderr, - _("umount: %s busy - remounted read-only\n"), - spec); - if (mc && !nomtab) { - /* update mtab if the entry is there */ - struct my_mntent remnt; - remnt.mnt_fsname = mc->m.mnt_fsname; - remnt.mnt_dir = mc->m.mnt_dir; - remnt.mnt_type = mc->m.mnt_type; - remnt.mnt_opts = "ro"; - remnt.mnt_freq = 0; - remnt.mnt_passno = 0; - update_mtab(node, &remnt); - } - block_signals(SIG_UNBLOCK); - return 0; - } else if (errno != EBUSY) { /* hmm ... */ - perror("remount"); - fprintf(stderr, - _("umount: could not remount %s read-only\n"), - spec); - } - } - - loopdev = 0; - if (res >= 0) { - /* Umount succeeded */ - if (verbose) - printf (_("%s has been unmounted\n"), spec); - - /* Free any loop devices that we allocated ourselves */ - if (mc) { - char *optl; - - /* old style mtab line? */ - if (streq(mc->m.mnt_type, "loop")) { - loopdev = spec; - goto gotloop; - } - - /* new style mtab line? */ - optl = mc->m.mnt_opts ? xstrdup(mc->m.mnt_opts) : ""; - for (optl = strtok (optl, ","); optl; - optl = strtok (NULL, ",")) { - if (!strncmp(optl, "loop=", 5)) { - loopdev = optl+5; - goto gotloop; - } - } - } else { - /* - * If option "-o loop=spec" occurs in mtab, - * note the mount point, and delete mtab line. - */ - if ((mc = getmntoptfile (spec)) != NULL) - node = mc->m.mnt_dir; - } - - /* Also free loop devices when -d flag is given */ - if (delloop) - loopdev = spec; - } - gotloop: - if (loopdev) { - struct loopdev_cxt lc; - - loopcxt_init(&lc, 0); - loopcxt_set_device(&lc, loopdev); - - if (loopcxt_get_backing_file(&lc) - && loopcxt_is_autoclear(&lc) == 0) - loopcxt_delete_device(&lc); - loopcxt_deinit(&lc); - } - - writemtab: - if (!nomtab && - (umnt_err == 0 || umnt_err == EINVAL || umnt_err == ENOENT)) { - - update_mtab (node, NULL); - } - - block_signals(SIG_UNBLOCK); - - if (res >= 0) - return 0; - if (umnt_err) - complain(umnt_err, node); - return 1; -} - -/* - * umount_one_bw: unmount FILE that has last occurrence MC0 - * - * Why this loop? - * 1. People who boot a system with a bad fstab root entry - * will get an incorrect "/dev/foo on /" in mtab. - * If later /dev/foo is actually mounted elsewhere, - * it will occur twice in mtab. - * 2. With overmounting one can get the situation that - * the same filename is used as mount point twice. - * In both cases, it is best to try the last occurrence first. - */ -static int -umount_one_bw (const char *file, struct mntentchn *mc0) { - struct mntentchn *mc; - int res = 1; - - mc = mc0; - while (res && mc) { - res = umount_one(mc->m.mnt_fsname, mc->m.mnt_dir, - mc->m.mnt_type, mc); - mc = getmntdirbackward(file, mc); - } - mc = mc0; - while (res && mc) { - res = umount_one(mc->m.mnt_fsname, mc->m.mnt_dir, - mc->m.mnt_type, mc); - mc = getmntdevbackward(file, mc); - } - return res; -} - -/* Unmount all filesystems of type VFSTYPES found in mtab. Since we are - concurrently updating mtab after every successful umount, we have to - slurp in the entire file before we start. This isn't too bad, because - in any case it's important to umount mtab entries in reverse order - to mount, e.g. /usr/spool before /usr. */ -static int -umount_all (char *types, char *test_opts) { - struct mntentchn *mc, *hd; - int errors = 0; - - hd = mtab_head(); - if (!hd->prev) - die (2, _("umount: cannot find list of filesystems to unmount")); - for (mc = hd->prev; mc != hd; mc = mc->prev) { - if (matching_type (mc->m.mnt_type, types) - && matching_opts (mc->m.mnt_opts, test_opts)) { - errors |= umount_one (mc->m.mnt_fsname, mc->m.mnt_dir, - mc->m.mnt_type, mc); - } - } - - return errors; -} - -static struct option longopts[] = -{ - { "all", 0, 0, 'a' }, - { "force", 0, 0, 'f' }, - { "help", 0, 0, 'h' }, - { "no-mtab", 0, 0, 'n' }, - { "test-opts", 1, 0, 'O' }, - { "verbose", 0, 0, 'v' }, - { "version", 0, 0, 'V' }, - { "read-only", 0, 0, 'r' }, - { "types", 1, 0, 't' }, - - { "no-canonicalize", 0, 0, 144 }, - { "fake", 0, 0, 145 }, - { NULL, 0, 0, 0 } -}; - -static void -usage (FILE *fp, int n) -{ - fprintf (fp, _("Usage: umount -h | -V\n" - " umount -a [-d] [-f] [-r] [-n] [-v] [-t vfstypes] [-O opts]\n" - " umount [-d] [-f] [-r] [-n] [-v] special | node...\n")); - exit (n); -} - -/* - * Look for an option in a comma-separated list - */ -static int -contains(const char *list, const char *s) { - int n = strlen(s); - - while (list && *list) { - if (strncmp(list, s, n) == 0 && - (list[n] == 0 || list[n] == ',')) - return 1; - while (*list && *list++ != ',') ; - } - return 0; -} - -/* check if @mc contains a loop device which is associated - * with the @file in fs - */ -static int -is_valid_loop(struct mntentchn *mc, struct mntentchn *fs) -{ - uintmax_t offset = 0; - char *p; - - /* check if it begins with /dev/loop */ - if (strncmp(mc->m.mnt_fsname, _PATH_DEV_LOOP, - sizeof(_PATH_DEV_LOOP) - 1)) - return 0; - - /* check for loop option in fstab */ - if (!contains(fs->m.mnt_opts, "loop")) - return 0; - - /* check for offset option in fstab */ - p = get_option_value(fs->m.mnt_opts, "offset="); - if (p && strtosize(p, &offset)) { - if (verbose > 1) - printf(_("failed to parse 'offset=%s' options\n"), p); - return 0; - } - - /* check association */ - if (loopdev_is_used((char *) mc->m.mnt_fsname, fs->m.mnt_fsname, - offset, LOOPDEV_FL_OFFSET) == 1) { - if (verbose > 1) - printf(_("device %s is associated with %s\n"), - mc->m.mnt_fsname, fs->m.mnt_fsname); - return 1; - } - - if (verbose > 1) - printf(_("device %s is not associated with %s\n"), - mc->m.mnt_fsname, fs->m.mnt_fsname); - return 0; -} - -/* - * umount helper call based on {u,p}helper= mount option - */ -static int check_helper_umountprog(const char *node, - const char *opts, const char *name, - int *status) -{ - char *helper; - - if (!external_allowed || !opts) - return 0; - - helper = get_option_value(opts, name); - if (helper) - return check_special_umountprog(node, helper, status); - - return 0; -} - -static int -umount_file (char *arg) { - struct mntentchn *mc, *fs; - const char *file, *options; - int fstab_has_user, fstab_has_users, fstab_has_owner, fstab_has_group; - int ok, status = 0; - struct stat statbuf; - char *loopdev = NULL; - - if (!*arg) { /* "" would be expanded to `pwd` */ - die(2, _("Cannot unmount \"\"\n")); - return 0; - } - - file = canonicalize(arg); /* mtab paths are canonicalized */ - -try_loopdev: - if (verbose > 1) - printf(_("Trying to unmount %s\n"), file); - - mc = getmntdirbackward(file, NULL); - if (!mc) { - mc = getmntdevbackward(file, NULL); - if (mc) { - struct mntentchn *mc1; - char *cn; - - mc1 = getmntdirbackward(mc->m.mnt_dir, NULL); - if (!mc1) - /* 'mc1' must exist, though not necessarily - equals to `mc'. Otherwise we go mad. */ - die(EX_SOFTWARE, - _("umount: confused when analyzing mtab")); - - cn = canonicalize(mc1->m.mnt_fsname); - if (cn && strcmp(file, cn)) { - /* Something was stacked over `file' on the - same mount point. */ - die(EX_FAIL, _("umount: cannot unmount %s -- %s is " - "mounted over it on the same point"), - file, mc1->m.mnt_fsname); - } - free(cn); - } - } - if (!mc && verbose) - printf(_("Could not find %s in mtab\n"), file); - - /* not found in mtab - check if it is associated with some loop device - * (only if it is a regular file) - */ - if (!mc && !loopdev && !stat(file, &statbuf) && S_ISREG(statbuf.st_mode)) { - int count = loopdev_count_by_backing_file(file, &loopdev); - - if (count == 1) { - if (verbose) - printf(_("%s is associated with %s\n"), - arg, loopdev); - file = loopdev; - goto try_loopdev; - - } else if (count > 1) - fprintf(stderr, _("umount: warning: %s is associated " - "with more than one loop device\n"), arg); - } - - if (mc) { - /* - * helper - umount helper (e.g. pam_mount) - */ - if (check_helper_umountprog(arg, mc->m.mnt_opts, - "helper=", &status)) - return status; - } - - if (restricted) { - char *mtab_user = NULL; - - if (!mc) - die(2, - _("umount: %s is not mounted (according to mtab)"), - file); - /* - * uhelper - unprivileged umount helper (e.g. HAL/udisks mounts) - */ - if (check_helper_umountprog(arg, mc->m.mnt_opts, - "uhelper=", &status)) - return status; - - /* The 2.4 kernel will generally refuse to mount the same - filesystem on the same mount point, but will accept NFS. - So, unmounting must be possible. */ - if (!is_mounted_once(file) && strcmp(mc->m.mnt_type,"nfs")) - die(2, - _("umount: it seems %s is mounted multiple times"), - file); - - /* If fstab contains the two lines - /dev/sda1 /mnt/zip auto user,noauto 0 0 - /dev/sda4 /mnt/zip auto user,noauto 0 0 - then "mount /dev/sda4" followed by "umount /mnt/zip" - used to fail. So, we must not look for file, but for - the pair (dev,file) in fstab. */ - fs = getfs_by_devdir(mc->m.mnt_fsname, mc->m.mnt_dir); - if (!fs) { - fs = getfs_by_dir(file); - if (!fs && !getfs_by_spec(file)) - die (2, - _("umount: %s is not in the fstab " - "(and you are not root)"), - file); - - /* spec could be a file which is loop mounted */ - if (!fs || !is_valid_loop(mc, fs)) - die (2, _("umount: %s mount disagrees with " - "the fstab"), file); - } - - /* - * User mounting and unmounting is allowed only - * if fstab contains one of the options `user', - * `users' or `owner' or `group'. - * - * The option `users' allows arbitrary users to mount - * and unmount - this may be a security risk. - * - * The options `user', `owner' and `group' only allow - * unmounting by the user that mounted (visible in mtab). - */ - - options = fs->m.mnt_opts; - if (!options) - options = ""; - fstab_has_user = contains(options, "user"); - fstab_has_users = contains(options, "users"); - fstab_has_owner = contains(options, "owner"); - fstab_has_group = contains(options, "group"); - ok = 0; - - if (fstab_has_users) - ok = 1; - - if (!ok && (fstab_has_user || fstab_has_owner || - fstab_has_group)) { - char *user = getusername(); - - options = mc->m.mnt_opts; - if (!options) - options = ""; - mtab_user = get_option_value(options, "user="); - - if (user && mtab_user && streq (user, mtab_user)) - ok = 1; - } - if (!ok) - die (2, _("umount: only %s can unmount %s from %s"), - mtab_user ? mtab_user : "root", - fs->m.mnt_fsname, fs->m.mnt_dir); - - } - - if (mc) - return umount_one_bw (file, mc); - else - return umount_one (arg, arg, arg, NULL); -} - -int -main (int argc, char *argv[]) { - int c; - int all = 0; - char *types = NULL, *test_opts = NULL, *p; - int result = 0; - - sanitize_env(); - setlocale(LC_ALL, ""); - bindtextdomain(PACKAGE, LOCALEDIR); - textdomain(PACKAGE); - atexit(close_stdout); - - progname = argv[0]; - if ((p = strrchr(progname, '/')) != NULL) - progname = p+1; - - umask(022); - - while ((c = getopt_long (argc, argv, "adfhlnrit:O:vV", - longopts, NULL)) != -1) - switch (c) { - case 'a': /* umount everything */ - ++all; - break; - /* fall through? */ - case 'd': /* do losetup -d for unmounted loop devices */ - ++delloop; - break; - case 'f': /* force umount */ - ++force; - break; - case 'h': /* help */ - usage (stdout, 0); - break; - case 'l': /* lazy umount */ - ++lazy; - break; - case 'n': /* do not write in /etc/mtab */ - ++nomtab; - break; - case 'O': /* specify file system options */ - test_opts = optarg; - break; - case 'r': /* remount read-only if umount fails */ - ++remount; - break; - case 'v': /* make noise */ - ++verbose; - break; - case 'V': /* version */ - printf(UTIL_LINUX_VERSION); - exit (0); - case 't': /* specify file system type */ - types = optarg; - break; - case 'i': - external_allowed = 0; - break; - case 144: - nocanonicalize = 1; - break; - case 145: - fake = 1; - break; - case 0: - break; - case '?': - default: - usage (stderr, 1); - } - - { - const uid_t ruid = getuid(); - const uid_t euid = geteuid(); - - /* if we're really root and aren't running setuid */ - if (((uid_t)0 == ruid) && (ruid == euid)) { - restricted = 0; - } - } - - if (restricted && - (all || types || nomtab || force || remount || nocanonicalize || - fake)) { - die (2, _("umount: only root can do that")); - } - - argc -= optind; - argv += optind; - - atexit(unlock_mtab); - - if (all) { - /* nodev stuff: sysfs, usbfs, oprofilefs, ... */ - if (types == NULL) - types = "noproc,nodevfs,nodevpts,nosysfs,norpc_pipefs,nonfsd"; - result = umount_all (types, test_opts); - } else if (argc < 1) { - usage (stderr, 2); - } else while (argc--) { - result += umount_file(*argv++); - } - exit (result); /* nonzero on at least one failure */ -} diff --git a/tests/expected/build-sys/config-old-mount b/tests/expected/build-sys/config-old-mount deleted file mode 100644 index a9f2d606e..000000000 --- a/tests/expected/build-sys/config-old-mount +++ /dev/null @@ -1,100 +0,0 @@ -blkid: libblkid libuuid -cfdisk: libblkid libncursesw libtinfo libuuid -eject: libblkid libmount libuuid -fdisk: libblkid libuuid -findfs: libblkid libuuid -findmnt: libblkid libmount libudev libuuid -fsck: libblkid libmount libuuid -fstrim: libblkid libmount libuuid -libblkid.so.1.1.0: libuuid -libmount.so.1.1.0: libblkid libuuid -libuuid.so.1.3.0: -lsblk: libblkid libmount libudev libuuid -lslocks: libblkid libmount libuuid -mkswap: libblkid libuuid -mount: libblkid libuuid -mountpoint: libblkid libmount libuuid -partx: libblkid libuuid -swaplabel: libblkid libuuid -swapoff: libblkid libmount libuuid -swapon: libblkid libmount libuuid -umount: libblkid libuuid -uuidd: libuuid -uuidgen: libuuid -wipefs: libblkid libuuid -addpart: -agetty: -blkdiscard: -blockdev: -cal: libncursesw libtinfo -chcpu: -chrt: -col: -colcrt: -colrm: -column: -ctrlaltdel: -cytune: -delpart: -dmesg: librt -fallocate: -fdformat: -flock: -fsck.cramfs: libz -fsck.minix: -fsfreeze: -getopt: -hexdump: -hwclock: -ionice: -ipcmk: -ipcrm: -ipcs: -isosize: -kill: -last: -ldattach: -logger: -login: libpam libpam_misc -look: -losetup: -lscpu: -mcookie: -mesg: -mkfs: -mkfs.bfs: -mkfs.cramfs: libz -mkfs.minix: -more: libtinfo -namei: -nologin: -nsenter: -pg: libncursesw libtinfo -pivot_root: -prlimit: -raw: -readprofile: -rename: -renice: -resizepart: -rev: -rtcwake: -runuser: libpam libpam_misc -script: libutil -scriptreplay: -setarch: -setpriv: ap-ng -setsid: -setterm: libtinfo -sfdisk: -su: libpam libpam_misc -sulogin: rypt -switch_root: -tailf: -taskset: -ul: libtinfo -unshare: -utmpdump: -wall: -wdctl: -whereis: diff --git a/tests/ts/mount/shared-subtree b/tests/ts/mount/shared-subtree index c0716de2b..f234a289e 100755 --- a/tests/ts/mount/shared-subtree +++ b/tests/ts/mount/shared-subtree @@ -58,25 +58,19 @@ mkfs.ext3 $DEVICE &> /dev/null || ts_die "Cannot make ext3 on $DEVICE" $DEVICE ts_device_has "TYPE" "ext3" $DEVICE || ts_die "Cannot find ext3 on $DEVICE" $DEVICE -# multiple propagation flags for one mount(8) call is unsupported -# by old mount-deprecated/mount -$TS_CMD_MOUNT -V | grep -q libmount -if [ $? -eq 0 ]; then - - ts_init_subtest "mount-private" - $TS_CMD_MOUNT --make-private --make-unbindable \ - $DEVICE $MOUNTPOINT >> $TS_OUTPUT 2>&1 - $TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT - $TS_CMD_UMOUNT $MOUNTPOINT - ts_finalize_subtest - - ts_init_subtest "mount-private-ro" - $TS_CMD_MOUNT $DEVICE $MOUNTPOINT -o ro,private >> $TS_OUTPUT 2>&1 - $TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT - $TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o VFS-OPTIONS >> $TS_OUTPUT - $TS_CMD_UMOUNT $MOUNTPOINT - ts_finalize_subtest -fi +ts_init_subtest "mount-private" +$TS_CMD_MOUNT --make-private --make-unbindable \ + $DEVICE $MOUNTPOINT >> $TS_OUTPUT 2>&1 +$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT +$TS_CMD_UMOUNT $MOUNTPOINT +ts_finalize_subtest + +ts_init_subtest "mount-private-ro" +$TS_CMD_MOUNT $DEVICE $MOUNTPOINT -o ro,private >> $TS_OUTPUT 2>&1 +$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT +$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o VFS-OPTIONS >> $TS_OUTPUT +$TS_CMD_UMOUNT $MOUNTPOINT +ts_finalize_subtest ts_device_deinit $DEVICE rmdir $MOUNTPOINT diff --git a/tools/config-gen.d/old-mount.conf b/tools/config-gen.d/old-mount.conf deleted file mode 100644 index 756c9b8c5..000000000 --- a/tools/config-gen.d/old-mount.conf +++ /dev/null @@ -1,3 +0,0 @@ -include:core.conf - ---enable-deprecated-mount |