diff options
Diffstat (limited to 'sys/contrib/openzfs/lib/libspl/os/linux/getmntany.c')
| -rw-r--r-- | sys/contrib/openzfs/lib/libspl/os/linux/getmntany.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/sys/contrib/openzfs/lib/libspl/os/linux/getmntany.c b/sys/contrib/openzfs/lib/libspl/os/linux/getmntany.c index dcdf7b3d6fc9..ee1cdf59b9e5 100644 --- a/sys/contrib/openzfs/lib/libspl/os/linux/getmntany.c +++ b/sys/contrib/openzfs/lib/libspl/os/linux/getmntany.c @@ -85,13 +85,21 @@ _sol_getmntent(FILE *fp, struct mnttab *mgetp) } static int -getextmntent_impl(FILE *fp, struct extmnttab *mp) +getextmntent_impl(FILE *fp, struct extmnttab *mp, uint64_t *mnt_id) { int ret; struct stat64 st; + *mnt_id = 0; ret = _sol_getmntent(fp, (struct mnttab *)mp); if (ret == 0) { +#ifdef HAVE_STATX_MNT_ID + struct statx stx; + if (statx(AT_FDCWD, mp->mnt_mountp, + AT_STATX_SYNC_AS_STAT | AT_SYMLINK_NOFOLLOW, + STATX_MNT_ID, &stx) == 0 && (stx.stx_mask & STATX_MNT_ID)) + *mnt_id = stx.stx_mnt_id; +#endif if (stat64(mp->mnt_mountp, &st) != 0) { mp->mnt_major = 0; mp->mnt_minor = 0; @@ -110,6 +118,12 @@ getextmntent(const char *path, struct extmnttab *entry, struct stat64 *statbuf) struct stat64 st; FILE *fp; int match; + boolean_t have_mnt_id = B_FALSE; + uint64_t target_mnt_id = 0; + uint64_t entry_mnt_id; +#ifdef HAVE_STATX_MNT_ID + struct statx stx; +#endif if (strlen(path) >= MAXPATHLEN) { (void) fprintf(stderr, "invalid object; pathname too long\n"); @@ -128,6 +142,13 @@ getextmntent(const char *path, struct extmnttab *entry, struct stat64 *statbuf) return (-1); } +#ifdef HAVE_STATX_MNT_ID + if (statx(AT_FDCWD, path, AT_STATX_SYNC_AS_STAT | AT_SYMLINK_NOFOLLOW, + STATX_MNT_ID, &stx) == 0 && (stx.stx_mask & STATX_MNT_ID)) { + have_mnt_id = B_TRUE; + target_mnt_id = stx.stx_mnt_id; + } +#endif if ((fp = fopen(MNTTAB, "re")) == NULL) { (void) fprintf(stderr, "cannot open %s\n", MNTTAB); @@ -139,12 +160,15 @@ getextmntent(const char *path, struct extmnttab *entry, struct stat64 *statbuf) */ match = 0; - while (getextmntent_impl(fp, entry) == 0) { - if (makedev(entry->mnt_major, entry->mnt_minor) == - statbuf->st_dev) { - match = 1; - break; + while (getextmntent_impl(fp, entry, &entry_mnt_id) == 0) { + if (have_mnt_id) { + match = (entry_mnt_id == target_mnt_id); + } else { + match = makedev(entry->mnt_major, entry->mnt_minor) == + statbuf->st_dev; } + if (match) + break; } (void) fclose(fp); |