diff options
author | Karel Zak | 2011-01-04 14:01:33 +0100 |
---|---|---|
committer | Karel Zak | 2011-01-04 14:01:33 +0100 |
commit | 049caefdcf5f0fa01339fcca012ea23b7b147619 (patch) | |
tree | 9afe27aec1302889365494c205bf4573a3eb5893 /misc-utils/findmnt.c | |
parent | libmount: cleanup API and docs (diff) | |
download | kernel-qcow2-util-linux-049caefdcf5f0fa01339fcca012ea23b7b147619.tar.gz kernel-qcow2-util-linux-049caefdcf5f0fa01339fcca012ea23b7b147619.tar.xz kernel-qcow2-util-linux-049caefdcf5f0fa01339fcca012ea23b7b147619.zip |
findmnt: add --submounts option
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'misc-utils/findmnt.c')
-rw-r--r-- | misc-utils/findmnt.c | 104 |
1 files changed, 72 insertions, 32 deletions
diff --git a/misc-utils/findmnt.c b/misc-utils/findmnt.c index 4b9d45baa..af5d6e04b 100644 --- a/misc-utils/findmnt.c +++ b/misc-utils/findmnt.c @@ -47,6 +47,7 @@ enum { FL_INVERT = (1 << 4), FL_NOSWAPMATCH = (1 << 6), FL_NOFSROOT = (1 << 7), + FL_SUBMOUNTS = (1 << 8), }; /* column IDs */ @@ -297,10 +298,23 @@ static struct tt_line *add_line(struct tt *tt, mnt_fs *fs, for (i = 0; i < ncolumns; i++) tt_line_set_data(line, i, get_data(fs, i)); + tt_line_set_userdata(line, fs); return line; } -/* reads filesystems from @tb (libmount) and fillin @tab (output table) */ +static int has_line(struct tt *tt, mnt_fs *fs) +{ + struct list_head *p; + + list_for_each(p, &tt->tb_lines) { + struct tt_line *ln = list_entry(p, struct tt_line, ln_lines); + if ((mnt_fs *) ln->userdata == fs) + return 1; + } + return 0; +} + +/* reads filesystems from @tb (libmount) and fillin @tt (output table) */ static int create_treenode(struct tt *tt, mnt_tab *tb, mnt_fs *fs, struct tt_line *parent_line) { @@ -314,7 +328,9 @@ static int create_treenode(struct tt *tt, mnt_tab *tb, if (mnt_tab_get_root_fs(tb, &fs)) goto leave; parent_line = NULL; - } + + } else if ((flags & FL_SUBMOUNTS) && has_line(tt, fs)) + return 0; itr = mnt_new_iter(MNT_ITER_FORWARD); if (!itr) @@ -446,6 +462,38 @@ again: return fs; } +static int add_matching_lines(mnt_tab *tb, struct tt *tt, int direction) +{ + mnt_iter *itr = NULL; + mnt_fs *fs; + int nlines = 0, rc = -1; + + itr = mnt_new_iter(direction); + if (!itr) { + warn(_("failed to initialize libmount iterator")); + goto done; + } + + while((fs = get_next_fs(tb, itr))) { + if ((tt_flags & TT_FL_TREE) || (flags & FL_SUBMOUNTS)) + rc = create_treenode(tt, tb, fs, NULL); + else + rc = !add_line(tt, fs, NULL); + if (rc) + goto done; + nlines++; + if (flags & FL_FIRSTONLY) + break; + flags |= FL_NOSWAPMATCH; + } + + if (nlines) + rc = 0; +done: + mnt_free_iter(itr); + return rc; +} + static void __attribute__((__noreturn__)) usage(FILE *out) { int i; @@ -480,6 +528,7 @@ static void __attribute__((__noreturn__)) usage(FILE *out) " -a, --ascii use ascii chars for tree formatting\n" " -t, --types <list> limit the set of filesystem by FS types\n" " -v, --nofsroot don't print [/dir] for bind or btrfs mounts\n" + " -R, --submounts print all submount for the matching filesystems\n" " -S, --source <string> device, LABEL= or UUID=device\n" " -T, --target <string> mountpoint\n\n")); @@ -509,16 +558,13 @@ int main(int argc, char *argv[]) { /* libmount */ mnt_tab *tb = NULL; - mnt_iter *itr = NULL; - mnt_fs *fs = NULL; char *tabfile = NULL; int direction = MNT_ITER_FORWARD; + int i, c, rc = -1; /* table.h */ struct tt *tt = NULL; - int i, c, nlines = 0, rc = EXIT_FAILURE; - struct option longopts[] = { { "ascii", 0, 0, 'a' }, { "canonicalize", 0, 0, 'c' }, @@ -538,6 +584,7 @@ int main(int argc, char *argv[]) { "raw", 0, 0, 'r' }, { "types", 1, 0, 't' }, { "fsroot", 0, 0, 'v' }, + { "submounts", 0, 0, 'R' }, { "source", 1, 0, 'S' }, { "target", 1, 0, 'T' }, @@ -560,7 +607,7 @@ int main(int argc, char *argv[]) tt_flags |= TT_FL_TREE; while ((c = getopt_long(argc, argv, - "acd:ehifo:O:klmnrst:uvS:T:", longopts, NULL)) != -1) { + "acd:ehifo:O:klmnrst:uvRS:T:", longopts, NULL)) != -1) { switch(c) { case 'a': tt_flags |= TT_FL_ASCII; @@ -636,6 +683,9 @@ int main(int argc, char *argv[]) case 'v': flags |= FL_NOFSROOT; break; + case 'R': + flags |= FL_SUBMOUNTS; + break; case 'S': set_match(COL_SOURCE, optarg); flags |= FL_NOSWAPMATCH; @@ -669,7 +719,12 @@ int main(int argc, char *argv[]) if (optind < argc) set_match(COL_TARGET, argv[optind++]); /* mountpoint */ - if (!is_listall_mode() || (flags & FL_FIRSTONLY)) + if ((flags & FL_SUBMOUNTS) && is_listall_mode()) + /* don't care about submounts if list all mounts */ + flags &= ~FL_SUBMOUNTS; + + if (!(flags & FL_SUBMOUNTS) && + (!is_listall_mode() || (flags & FL_FIRSTONLY))) tt_flags &= ~TT_FL_TREE; if (!(flags & FL_NOSWAPMATCH) && @@ -693,12 +748,6 @@ int main(int argc, char *argv[]) if (!tb) goto leave; - itr = mnt_new_iter(direction); - if (!itr) { - warn(_("failed to initialize libmount iterator")); - goto leave; - } - cache = mnt_new_cache(); if (!cache) { warn(_("failed to initialize libmount cache")); @@ -731,32 +780,23 @@ int main(int argc, char *argv[]) /* * Fill in data to the output table */ - if (tt_flags & TT_FL_TREE) { - if (create_treenode(tt, tb, NULL, NULL)) - goto leave; - } else { - while((fs = get_next_fs(tb, itr))) { - if (!add_line(tt, fs, NULL)) - goto leave; - nlines++; - if (flags & FL_FIRSTONLY) - break; - } - } + if ((tt_flags & TT_FL_TREE) && is_listall_mode()) + /* whole tree */ + rc = create_treenode(tt, tb, NULL, NULL); + else + /* whole lits of sub-tree */ + rc = add_matching_lines(tb, tt, direction); /* * Print the output table */ - tt_print_table(tt); - - if (is_listall_mode() || nlines) - rc = EXIT_SUCCESS; + if (!rc) + tt_print_table(tt); leave: tt_free_table(tt); mnt_free_tab(tb); mnt_free_cache(cache); - mnt_free_iter(itr); - return rc; + return rc ? EXIT_FAILURE : EXIT_SUCCESS; } |