/*
* Copyright (C) 2008-2009 Karel Zak <kzak@redhat.com>
*
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
*/
/**
* SECTION: utils
* @title: Utils
* @short_description: misc utils.
*/
#include <ctype.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>
#include "strutils.h"
#include "pathnames.h"
#include "mountP.h"
#include "mangle.h"
#include "canonicalize.h"
#include "env.h"
#include "match.h"
int append_string(char **a, const char *b)
{
size_t al, bl;
char *tmp;
assert(a);
if (!b || !*b)
return 0;
if (!*a) {
*a = strdup(b);
return !*a ? -ENOMEM : 0;
}
al = strlen(*a);
bl = b ? strlen(b) : 0;
tmp = realloc(*a, al + bl + 1);
if (!tmp)
return -ENOMEM;
*a = tmp;
memcpy((*a) + al, b, bl + 1);
return 0;
}
/*
* Return 1 if the file is not accessible or empty
*/
int is_file_empty(const char *name)
{
struct stat st;
assert(name);
return (stat(name, &st) != 0 || st.st_size == 0);
}
int mnt_valid_tagname(const char *tagname)
{
if (tagname && *tagname && (
strcmp("UUID", tagname) == 0 ||
strcmp("LABEL", tagname) == 0 ||
strcmp("PARTUUID", tagname) == 0 ||
strcmp("PARTLABEL", tagname) == 0))
return 1;
return 0;
}
int mnt_parse_offset(const char *str, size_t len, uintmax_t *res)
{
char *p;
int rc = 0;
if (!str || !*str)
return -EINVAL;
p = strndup(str, len);
if (!p)
return -errno;
if (strtosize(p, res))
rc = -EINVAL;
free(p);
return rc;
}
/* used as a callback by bsearch in mnt_fstype_is_pseudofs() */
static int fstype_cmp(const void *v1, const void *v2)
{
const char *s1 = *(const char **)v1;
const char *s2 = *(const char **)v2;
return strcmp(s1, s2);
}
/* returns basename and keeps dirname in the @path, if @path is "/" (root)
* then returns empty string */
char *stripoff_last_component(char *path)
{
char *p = path ? strrchr(path, '/') : NULL;
if (!p)
return NULL;
*p = '\0';
return p + 1;
}
/*
* Note that the @target has to be an absolute path (so at least "/"). The
* @filename returns an allocated buffer with the last path component, for example:
*
* mnt_chdir_to_parent("/mnt/test", &buf) ==> chdir("/mnt"), buf="test"
*/
int mnt_chdir_to_parent(const char *target, char **filename)
{
char *buf, *parent, *last = NULL;
char cwd[PATH_MAX];
int rc = -EINVAL;
if (!target || *target != '/')
return -EINVAL;
DBG(UTILS, mnt_debug("moving to %s parent", target));
buf = strdup(target);
if (!buf)
return -ENOMEM;
if (*(buf + 1) != '\0') {
last = stripoff_last_component(buf);
if (!last)
goto err;
}
parent = buf && *buf ? buf : "/";
if (chdir(parent) == -1) {
DBG(UTILS, mnt_debug("failed to chdir to %s: %m", parent));
rc = -errno;
goto err;
}
if (!getcwd(cwd, sizeof(cwd))) {
DBG(UTILS, mnt_debug("failed to obtain current directory: %m"));
rc = -errno;
goto err;
}
if (strcmp(cwd, parent) != 0) {
DBG(UTILS, mnt_debug(
"unexpected chdir (expected=%s, cwd=%s)", parent, cwd));
goto err;
}
DBG(CXT, mnt_debug(
"current directory moved to %s [last_component='%s']",
parent, last));
if (filename) {
*filename = buf;
if (!last || !*last)
memcpy(*filename, ".", 2);
else
memmove(*filename, last, strlen(last) + 1);
} else
free(buf);
return 0;
err:
free(buf);
return rc;
}
/*
* Check if @path is on a read-only filesystem independently of file permissions.
*/
int mnt_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 a read-write filesystem with a 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;
}
/**
* mnt_mangle:
* @str: string
*
* Encode @str to be compatible with fstab/mtab
*
* Returns: newly allocated string or NULL in case of error.
*/
char *mnt_mangle(const char *str)
{
return mangle(str);
}
/**
* mnt_unmangle:
* @str: string
*
* Decode @str from fstab/mtab
*
* Returns: newly allocated string or NULL in case of error.
*/
char *mnt_unmangle(const char *str)
{
return unmangle(str, NULL);
}
/**
* mnt_fstype_is_pseudofs:
* @type: filesystem name
*
* Returns: 1 for filesystems like proc, sysfs, ... or 0.
*/
int mnt_fstype_is_pseudofs(const char *type)
{
/* This array must remain sorted when adding new fstypes */
static const char *pseudofs[] = {
"anon_inodefs",
"autofs",
"bdev",
"binfmt_misc",
"cgroup",
"configfs",
"cpuset",
"debugfs",
"devfs",
"devpts",
"devtmpfs",
"dlmfs",
"fuse.gvfs-fuse-daemon",
"fusectl",
"hugetlbfs",
"mqueue",
"nfsd",
"none",
"pipefs",
"proc",
"pstore",
"ramfs",
"rootfs",
"rpc_pipefs",
"securityfs",
"sockfs",
"spufs",
"sysfs",
"tmpfs"
};
assert(type);
return !(bsearch(&type, pseudofs, ARRAY_SIZE(pseudofs),
sizeof(char*), fstype_cmp) == NULL);
}
/**
* mnt_fstype_is_netfs:
* @type: filesystem name
*
* Returns: 1 for filesystems like cifs, nfs, ... or 0.
*/
int mnt_fstype_is_netfs(const char *type)
{
assert(type);
if (strcmp(type, "cifs") == 0 ||
strcmp(type, "smbfs") == 0 ||
strncmp(type,"nfs", 3) == 0 ||
strcmp(type, "afs") == 0 ||
strcmp(type, "ncpfs") == 0 ||
strncmp(type,"9p", 2) == 0)
return 1;
return 0;
}
/**
* mnt_match_fstype:
* @type: filesystem type
* @pattern: filesystem name or comma delimited list of names
*
* The @pattern list of filesystems can be prefixed with a global
* "no" prefix to invert matching of the whole list. The "no" could
* also be used for individual items in the @pattern list. So,
* "nofoo,bar" has the same meaning as "nofoo,nobar".
*
* "bar" : "nofoo,bar" -> False (global "no" prefix)
*
* "bar" : "foo,bar" -> True
*
* "bar" : "foo,nobar" -> False
*
* Returns: 1 if type is matching, else 0. This function also returns
* 0 if @pattern is NULL and @type is non-NULL.
*/
int mnt_match_fstype(const char *type, const char *pattern)
{
return match_fstype(type, pattern);
}
/* Returns 1 if needle found or noneedle not found in haystack
* Otherwise returns 0
*/
static int check_option(const char *haystack, size_t len,
const char *needle, size_t needle_len)
{
const char *p;
int no = 0;
if (needle_len >= 1 && *needle == '+') {
needle++;
needle_len--;
} else if (needle_len >= 2 && !strncmp(needle, "no", 2)) {
no = 1;
needle += 2;
needle_len -= 2;
}
for (p = haystack; p && p < haystack + len; p++) {
char *sep = strchr(p, ',');
size_t plen = sep ? (size_t) (sep - p) :
len - (p - haystack);
if (plen == needle_len) {
if (!strncmp(p, needle, plen))
return !no; /* foo or nofoo was found */
}
p += plen;
}
return no; /* foo or nofoo was not found */
}
/**
* mnt_match_options:
* @optstr: options string
* @pattern: comma delimited list of options
*
* The "no" could be used for individual items in the @options list. The "no"
* prefix does not have a global meaning.
*
* Unlike fs type matching, nonetdev,user and nonetdev,nouser have
* DIFFERENT meanings; each option is matched explicitly as specified.
*
* The "no" prefix interpretation could be disabled by the "+" prefix, for example
* "+noauto" matches if @optstr literally contains the "noauto" string.
*
* "xxx,yyy,zzz" : "nozzz" -> False
*
* "xxx,yyy,zzz" : "xxx,noeee" -> True
*
* "bar,zzz" : "nofoo" -> True
*
* "nofoo,bar" : "+nofoo" -> True
*
* "bar,zzz" : "+nofoo" -> False
*
*
* Returns: 1 if pattern is matching, else 0. This function also returns 0
* if @pattern is NULL and @optstr is non-NULL.
*/
int mnt_match_options(const char *optstr, const char *pattern)
{
const char *p;
size_t len, optstr_len = 0;
if (!pattern && !optstr)
return 1;
if (!pattern)
return 0;
len = strlen(pattern);
if (optstr)
optstr_len = strlen(optstr);
for (p = pattern; p < pattern + len; p++) {
char *sep = strchr(p, ',');
size_t plen = sep ? (size_t) (sep - p) :
len - (p - pattern);
if (!plen)
continue; /* if two ',' appear in a row */
if (!check_option(optstr, optstr_len, p, plen))
return 0; /* any match failure means failure */
p += plen;
}
/* no match failures in list means success */
return 1;
}
void mnt_free_filesystems(char **filesystems)
{
char **p;
if (!filesystems)
return;
for (p = filesystems; *p; p++)
free(*p);
free(filesystems);
}
static int add_filesystem(char ***filesystems, char *name)
{
int n = 0;
assert(filesystems);
assert(name);
if (*filesystems) {
char **p;
for (n = 0, p = *filesystems; *p; p++, n++) {
if (strcmp(*p, name) == 0)
return 0;
}
}
#define MYCHUNK 16
if (n == 0 || !((n + 1) % MYCHUNK)) {
size_t items = ((n + 1 + MYCHUNK) / MYCHUNK) * MYCHUNK;
char **x = realloc(*filesystems, items * sizeof(char *));
if (!x)
goto err;
*filesystems = x;
}
name = strdup(name);
if (!name)
goto err;
(*filesystems)[n] = name;
(*filesystems)[n + 1] = NULL;
return 0;
err:
mnt_free_filesystems(*filesystems);
return -ENOMEM;
}
static int get_filesystems(const char *filename, char ***filesystems, const char *pattern)
{
int rc = 0;
FILE *f;
char line[128];
f = fopen(filename, "r" UL_CLOEXECSTR);
if (!f)
return 1;
DBG(UTILS, mnt_debug("reading filesystems list from: %s", filename));
while (fgets(line, sizeof(line), f)) {
char name[sizeof(line)];
if (*line == '#' || strncmp(line, "nodev", 5) == 0)
continue;
if (sscanf(line, " %128[^\n ]\n", name) != 1)
continue;
if (strcmp(name, "*") == 0) {
rc = 1;
break; /* end of the /etc/filesystems */
}
if (pattern && !mnt_match_fstype(name, pattern))
continue;
rc = add_filesystem(filesystems, name);
if (rc)
break;
}
fclose(f);
return rc;
}
/*
* Always check the @filesystems pointer!
*
* man mount:
*
* ...mount will try to read the file /etc/filesystems, or, if that does not
* exist, /proc/filesystems. All of the filesystem types listed there will
* be tried, except for those that are labeled "nodev" (e.g., devpts,
* proc and nfs). If /etc/filesystems ends in a line with a single * only,
* mount will read /proc/filesystems afterwards.
*/
int mnt_get_filesystems(char ***filesystems, const char *pattern)
{
int rc;
if (!filesystems)
return -EINVAL;
*filesystems = NULL;
rc = get_filesystems(_PATH_FILESYSTEMS, filesystems, pattern);
if (rc != 1)
return rc;
rc = get_filesystems(_PATH_PROC_FILESYSTEMS, filesystems, pattern);
if (rc == 1 && *filesystems)
rc = 0; /* /proc/filesystems not found */
return rc;
}
static size_t get_pw_record_size(void)
{
#ifdef _SC_GETPW_R_SIZE_MAX
long sz = sysconf(_SC_GETPW_R_SIZE_MAX);
if (sz > 0)
return sz;
#endif
return 16384;
}
/*
* Returns an allocated string with username or NULL.
*/
char *mnt_get_username(const uid_t uid)
{
struct passwd pwd;
struct passwd *res;
size_t sz = get_pw_record_size();
char *buf, *username = NULL;
buf = malloc(sz);
if (!buf)
return NULL;
if (!getpwuid_r(uid, &pwd, buf, sz, &res) && res)
username = strdup(pwd.pw_name);
free(buf);
return username;
}
int mnt_get_uid(const char *username, uid_t *uid)
{
int rc = -1;
struct passwd pwd;
struct passwd *pw;
size_t sz = get_pw_record_size();
char *buf;
if (!username || !uid)
return -EINVAL;
buf = malloc(sz);
if (!buf)
return -ENOMEM;
if (!getpwnam_r(username, &pwd, buf, sz, &pw) && pw) {
*uid= pw->pw_uid;
rc = 0;
} else {
DBG(UTILS, mnt_debug(
"cannot convert '%s' username to UID", username));
rc = errno ? -errno : -EINVAL;
}
free(buf);
return rc;
}
int mnt_get_gid(const char *groupname, gid_t *gid)
{
int rc = -1;
struct group grp;
struct group *gr;
size_t sz = get_pw_record_size();
char *buf;
if (!groupname || !gid)
return -EINVAL;
buf = malloc(sz);
if (!buf)
return -ENOMEM;
if (!getgrnam_r(groupname, &grp, buf, sz, &gr) && gr) {
*gid= gr->gr_gid;
rc = 0;
} else {
DBG(UTILS, mnt_debug(
"cannot convert '%s' groupname to GID", groupname));
rc = errno ? -errno : -EINVAL;
}
free(buf);
return rc;
}
int mnt_in_group(gid_t gid)
{
int rc = 0, n, i;
gid_t *grps = NULL;
if (getgid() == gid)
return 1;
n = getgroups(0, NULL);
if (n <= 0)
goto done;
grps = malloc(n * sizeof(*grps));
if (!grps)
goto done;
if (getgroups(n, grps) == n) {
for (i = 0; i < n; i++) {
if (grps[i] == gid) {
rc = 1;
break;
}
}
}
done:
free(grps);
return rc;
}
static int try_write(const char *filename)
{
int fd;
if (!filename)
return -EINVAL;
fd = open(filename, O_RDWR|O_CREAT|O_CLOEXEC,
S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH);
if (fd >= 0) {
close(fd);
return 0;
}
return -errno;
}
/**
* mnt_has_regular_mtab:
* @mtab: returns path to mtab
* @writable: returns 1 if the file is writable
*
* If the file does not exist and @writable argument is not NULL, then it will
* try to create the file.
*
* Returns: 1 if /etc/mtab is a regular file, and 0 in case of error (check
* errno for more details).
*/
int mnt_has_regular_mtab(const char **mtab, int *writable)
{
struct stat st;
int rc;
const char *filename = mtab && *mtab ? *mtab : mnt_get_mtab_path();
if (writable)
*writable = 0;
if (mtab && !*mtab)
*mtab = filename;
DBG(UTILS, mnt_debug("mtab: %s", filename));
rc = lstat(filename, &st);
if (rc == 0) {
/* file exists */
if (S_ISREG(st.st_mode)) {
if (writable)
*writable = !try_write(filename);
return 1;
}
goto done;
}
/* try to create the file */
if (writable) {
*writable = !try_write(filename);
if (*writable)
return 1;
}
done:
DBG(UTILS, mnt_debug("%s: irregular/non-writable", filename));
return 0;
}
/*
* Don't export this to libmount API -- utab is private library stuff.
*
* If the file does not exist and @writable argument is not NULL, then it will
* try to create the directory (e.g. /run/mount) and the file.
*
* Returns: 1 if utab is a regular file, and 0 in case of
* error (check errno for more details).
*/
int mnt_has_regular_utab(const char **utab, int *writable)
{
struct stat st;
int rc;
const char *filename = utab && *utab ? *utab : mnt_get_utab_path();
if (writable)
*writable = 0;
if (utab && !*utab)
*utab = filename;
DBG(UTILS, mnt_debug("utab: %s", filename));
rc = lstat(filename, &st);
if (rc == 0) {
/* file exists */
if (S_ISREG(st.st_mode)) {
if (writable)
*writable = !try_write(filename);
return 1;
}
goto done; /* it's not a regular file */
}
if (writable) {
char *dirname = strdup(filename);
if (!dirname)
goto done;
stripoff_last_component(dirname); /* remove filename */
rc = mkdir(dirname, S_IWUSR|
S_IRUSR|S_IRGRP|S_IROTH|
S_IXUSR|S_IXGRP|S_IXOTH);
free(dirname);
if (rc && errno != EEXIST)
goto done; /* probably EACCES */
*writable = !try_write(filename);
if (*writable)
return 1;
}
done:
DBG(UTILS, mnt_debug("%s: irregular/non-writable file", filename));
return 0;
}
/**
* mnt_get_swaps_path:
*
* Returns: path to /proc/swaps or $LIBMOUNT_SWAPS.
*/
const char *mnt_get_swaps_path(void)
{
const char *p = safe_getenv("LIBMOUNT_SWAPS");
return p ? : _PATH_PROC_SWAPS;
}
/**
* mnt_get_fstab_path:
*
* Returns: path to /etc/fstab or $LIBMOUNT_FSTAB.
*/
const char *mnt_get_fstab_path(void)
{
const char *p = safe_getenv("LIBMOUNT_FSTAB");
return p ? : _PATH_MNTTAB;
}
/**
* mnt_get_mtab_path:
*
* This function returns the *default* location of the mtab file. The result does
* not have to be writable. See also mnt_has_regular_mtab().
*
* Returns: path to /etc/mtab or $LIBMOUNT_MTAB.
*/
const char *mnt_get_mtab_path(void)
{
const char *p = safe_getenv("LIBMOUNT_MTAB");
return p ? : _PATH_MOUNTED;
}
/*
* Don't export this to libmount API -- utab is private library stuff.
*
* Returns: path to /run/mount/utab (or /dev/.mount/utab) or $LIBMOUNT_UTAB.
*/
const char *mnt_get_utab_path(void)
{
struct stat st;
const char *p = safe_getenv("LIBMOUNT_UTAB");
if (p)
return p;
if (stat(MNT_RUNTIME_TOPDIR, &st) == 0)
return MNT_PATH_UTAB;
return MNT_PATH_UTAB_OLD;
}
/* returns file descriptor or -errno, @name returns a unique filename
*/
int mnt_open_uniq_filename(const char *filename, char **name)
{
int rc, fd;
char *n;
mode_t oldmode;
if (!filename)
return -EINVAL;
if (name)
*name = NULL;
rc = asprintf(&n, "%s.XXXXXX", filename);
if (rc <= 0)
return -errno;
/* This is for very old glibc and for compatibility with Posix, which says
* nothing about mkstemp() mode. All sane glibc use secure mode (0600).
*/
oldmode = umask(S_IRGRP|S_IWGRP|S_IXGRP|
S_IROTH|S_IWOTH|S_IXOTH);
fd = mkostemp(n, O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC);
if (fd < 0)
fd = -errno;
umask(oldmode);
if (fd >= 0 && name)
*name = n;
else
free(n);
return fd;
}
/**
* mnt_get_mountpoint:
* @path: pathname
*
* This function finds the mountpoint that a given path resides in. @path
* should be canonicalized. The returned pointer should be freed by the caller.
*
* Returns: allocated string with the target of the mounted device or NULL on error
*/
char *mnt_get_mountpoint(const char *path)
{
char *mnt;
struct stat st;
dev_t dir, base;
assert(path);
mnt = strdup(path);
if (!mnt)
return NULL;
if (*mnt == '/' && *(mnt + 1) == '\0')
goto done;
if (stat(mnt, &st))
goto err;
base = st.st_dev;
do {
char *p = stripoff_last_component(mnt);
if (!p)
break;
if (stat(*mnt ? mnt : "/", &st))
goto err;
dir = st.st_dev;
if (dir != base) {
if (p > mnt)
*(p - 1) = '/';
goto done;
}
base = dir;
} while (mnt && *(mnt + 1) != '\0');
memcpy(mnt, "/", 2);
done:
DBG(UTILS, mnt_debug("%s mountpoint is %s", path, mnt));
return mnt;
err:
free(mnt);
return NULL;
}
char *mnt_get_fs_root(const char *path, const char *mnt)
{
char *m = (char *) mnt, *res;
const char *p;
size_t sz;
if (!m)
m = mnt_get_mountpoint(path);
if (!m)
return NULL;
sz = strlen(m);
p = sz > 1 ? path + sz : path;
if (m != mnt)
free(m);
res = *p ? strdup(p) : strdup("/");
DBG(UTILS, mnt_debug("%s fs-root is %s", path, res));
return res;
}
/*
* Search for @name kernel command parametr.
*
* Returns newly allocated string with a parameter argument if the @name is
* specified as "name=" or returns pointer to @name or returns NULL if not
* found.
*
* For example cmdline: "aaa bbb=BBB ccc"
*
* @name is "aaa" --returns--> "aaa" (pointer to @name)
* @name is "bbb=" --returns--> "BBB" (allocated)
* @name is "foo" --returns--> NULL
*/
char *mnt_get_kernel_cmdline_option(const char *name)
{
FILE *f;
size_t len;
int val = 0;
char *p, *res = NULL;
char buf[BUFSIZ]; /* see kernel include/asm-generic/setup.h: COMMAND_LINE_SIZE */
const char *path = _PATH_PROC_CMDLINE;
if (!name)
return NULL;
#ifdef TEST_PROGRAM
path = getenv("LIBMOUNT_KERNEL_CMDLINE");
if (!path)
path = _PATH_PROC_CMDLINE;
#endif
f = fopen(path, "r" UL_CLOEXECSTR);
if (!f)
return NULL;
p = fgets(buf, sizeof(buf), f);
fclose(f);
if (!p || !*p || *p == '\n')
return NULL;
len = strlen(buf);
*(buf + len - 1) = '\0'; /* remove last '\n' */
len = strlen(name);
if (len && *(name + len - 1) == '=')
val = 1;
for ( ; p && *p; p++) {
if (!(p = strstr(p, name)))
break; /* not found the option */
if (p != buf && !isblank(*(p - 1)))
continue; /* no space before the option */
if (!val && *(p + len) != '\0' && !isblank(*(p + len)))
continue; /* no space after the option */
if (val) {
char *v = p + len;
while (*p && !isblank(*p)) /* jump to the end of the argument */
p++;
*p = '\0';
res = strdup(v);
break;
} else
res = (char *) name; /* option without '=' */
break;
}
return res;
}
int mkdir_p(const char *path, mode_t mode)
{
char *p, *dir;
int rc = 0;
if (!path || !*path)
return -EINVAL;
dir = p = strdup(path);
if (!dir)
return -ENOMEM;
if (*p == '/')
p++;
while (p && *p) {
char *e = strchr(p, '/');
if (e)
*e = '\0';
if (*p) {
rc = mkdir(dir, mode);
if (rc && errno != EEXIST)
break;
rc = 0;
}
if (!e)
break;
*e = '/';
p = e + 1;
}
DBG(UTILS, mnt_debug("%s mkdir %s", path, rc ? "FAILED" : "SUCCESS"));
free(dir);
return rc;
}
#ifdef TEST_PROGRAM
int test_match_fstype(struct libmnt_test *ts, int argc, char *argv[])
{
char *type = argv[1];
char *pattern = argv[2];
printf("%s\n", mnt_match_fstype(type, pattern) ? "MATCH" : "NOT-MATCH");
return 0;
}
int test_match_options(struct libmnt_test *ts, int argc, char *argv[])
{
char *optstr = argv[1];
char *pattern = argv[2];
printf("%s\n", mnt_match_options(optstr, pattern) ? "MATCH" : "NOT-MATCH");
return 0;
}
int test_startswith(struct libmnt_test *ts, int argc, char *argv[])
{
char *optstr = argv[1];
char *pattern = argv[2];
printf("%s\n", startswith(optstr, pattern) ? "YES" : "NOT");
return 0;
}
int test_endswith(struct libmnt_test *ts, int argc, char *argv[])
{
char *optstr = argv[1];
char *pattern = argv[2];
printf("%s\n", endswith(optstr, pattern) ? "YES" : "NOT");
return 0;
}
int test_appendstr(struct libmnt_test *ts, int argc, char *argv[])
{
char *str = strdup(argv[1]);
const char *ap = argv[2];
append_string(&str, ap);
printf("new string: '%s'\n", str);
free(str);
return 0;
}
int test_mountpoint(struct libmnt_test *ts, int argc, char *argv[])
{
char *path = canonicalize_path(argv[1]),
*mnt = path ? mnt_get_mountpoint(path) : NULL;
printf("%s: %s\n", argv[1], mnt ? : "unknown");
free(mnt);
free(path);
return 0;
}
int test_fsroot(struct libmnt_test *ts, int argc, char *argv[])
{
char *path = canonicalize_path(argv[1]),
*mnt = path ? mnt_get_fs_root(path, NULL) : NULL;
printf("%s: %s\n", argv[1], mnt ? : "unknown");
free(mnt);
free(path);
return 0;
}
int test_filesystems(struct libmnt_test *ts, int argc, char *argv[])
{
char **filesystems = NULL;
int rc;
rc = mnt_get_filesystems(&filesystems, argc ? argv[1] : NULL);
if (!rc) {
char **p;
for (p = filesystems; *p; p++)
printf("%s\n", *p);
mnt_free_filesystems(filesystems);
}
return rc;
}
int test_chdir(struct libmnt_test *ts, int argc, char *argv[])
{
int rc;
char *path = canonicalize_path(argv[1]),
*last = NULL;
if (!path)
return -errno;
rc = mnt_chdir_to_parent(path, &last);
if (!rc) {
printf("path='%s', abs='%s', last='%s'\n",
argv[1], path, last);
}
free(path);
free(last);
return rc;
}
int test_kernel_cmdline(struct libmnt_test *ts, int argc, char *argv[])
{
char *name = argv[1];
char *res;
res = mnt_get_kernel_cmdline_option(name);
if (!res)
printf("'%s' not found\n", name);
else if (res == name)
printf("'%s' found\n", name);
else {
printf("'%s' found, argument: '%s'\n", name, res);
free(res);
}
return 0;
}
int test_mkdir(struct libmnt_test *ts, int argc, char *argv[])
{
int rc;
rc = mkdir_p(argv[1], S_IRWXU |
S_IRGRP | S_IXGRP |
S_IROTH | S_IXOTH);
if (rc)
printf("mkdir %s failed\n", argv[1]);
return rc;
}
int main(int argc, char *argv[])
{
struct libmnt_test tss[] = {
{ "--match-fstype", test_match_fstype, "<type> <pattern> FS types matching" },
{ "--match-options", test_match_options, "<options> <pattern> options matching" },
{ "--filesystems", test_filesystems, "[<pattern>] list /{etc,proc}/filesystems" },
{ "--starts-with", test_startswith, "<string> <prefix>" },
{ "--ends-with", test_endswith, "<string> <prefix>" },
{ "--append-string", test_appendstr, "<string> <appendix>" },
{ "--mountpoint", test_mountpoint, "<path>" },
{ "--fs-root", test_fsroot, "<path>" },
{ "--cd-parent", test_chdir, "<path>" },
{ "--kernel-cmdline",test_kernel_cmdline, "<option> | <option>=" },
{ "--mkdir", test_mkdir, "<path>" },
{ NULL }
};
return mnt_run_test(tss, argc, argv);
}
#endif /* TEST_PROGRAM */