diff options
| author | Karel Zak | 2016-04-15 12:05:55 +0200 |
|---|---|---|
| committer | Karel Zak | 2016-04-15 12:05:55 +0200 |
| commit | b529694f615a927bf10341558daa09725dd0294f (patch) | |
| tree | d36971cb241449fe4d0c6dd27f2c8c9c45740ff1 /libmount/src/tab_parse.c | |
| parent | tests: remove USE_LIBMOUNT_FORCE_MOUNTINFO (diff) | |
| download | kernel-qcow2-util-linux-b529694f615a927bf10341558daa09725dd0294f.tar.gz kernel-qcow2-util-linux-b529694f615a927bf10341558daa09725dd0294f.tar.xz kernel-qcow2-util-linux-b529694f615a927bf10341558daa09725dd0294f.zip | |
libmount: fix mnt_table_parse_mtab() logic
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'libmount/src/tab_parse.c')
| -rw-r--r-- | libmount/src/tab_parse.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/libmount/src/tab_parse.c b/libmount/src/tab_parse.c index 3253db714..45276a057 100644 --- a/libmount/src/tab_parse.c +++ b/libmount/src/tab_parse.c @@ -1060,6 +1060,9 @@ int __mnt_table_parse_mtab(struct libmnt_table *tb, const char *filename, assert(tb); + if (filename) + DBG(TAB, ul_debugobj(tb, "%s reuested as mtab", filename)); + #ifdef USE_LIBMOUNT_SUPPORT_MTAB if (mnt_has_regular_mtab(&filename, NULL)) { @@ -1077,16 +1080,18 @@ int __mnt_table_parse_mtab(struct libmnt_table *tb, const char *filename, if (!rc) return 0; filename = NULL; /* failed */ - } + } else + filename = NULL; /* mtab useless */ #endif - DBG(TAB, ul_debugobj(tb, "mtab parse: #1 read mountinfo")); - /* - * useless /etc/mtab - * -- read kernel information from /proc/self/mountinfo - */ - tb->fmt = filename ? MNT_FMT_GUESS : MNT_FMT_MOUNTINFO; - rc = mnt_table_parse_file(tb, filename ? filename : _PATH_PROC_MOUNTINFO); + if (!filename || strcmp(filename, _PATH_PROC_MOUNTINFO) == 0) { + filename = _PATH_PROC_MOUNTINFO; + tb->fmt = MNT_FMT_MOUNTINFO; + DBG(TAB, ul_debugobj(tb, "mtab parse: #1 read mountinfo")); + } else + tb->fmt = MNT_FMT_GUESS; + + rc = mnt_table_parse_file(tb, filename); if (rc) { /* hmm, old kernel? ...try /proc/mounts */ tb->fmt = MNT_FMT_MTAB; @@ -1095,9 +1100,7 @@ int __mnt_table_parse_mtab(struct libmnt_table *tb, const char *filename, if (!is_mountinfo(tb)) return 0; -#ifdef USE_LIBMOUNT_SUPPORT_MTAB read_utab: -#endif DBG(TAB, ul_debugobj(tb, "mtab parse: #2 read utab")); if (mnt_table_get_nents(tb) == 0) @@ -1145,8 +1148,14 @@ read_utab: * @tb: table * @filename: overwrites default or NULL * - * This function parses /etc/mtab or /proc/self/mountinfo + - * /run/mount/utabs or /proc/mounts. + * The default filename is /proc/self/mountinfo. If the mount table is a + * mountinfo file then /run/mount/utabs is parsed too and both files are merged + * to the one libmnt_table. + * + * If libmount is compiled with classic mtab file support, and the /etc/mtab is + * a regular file then this file is parsed. + * + * It's strongly recommended to use NULL as a @filename to keep code portable. * * See also mnt_table_set_parser_errcb(). * |