diff options
Diffstat (limited to 'mount/get_label_uuid.c')
| -rw-r--r-- | mount/get_label_uuid.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/mount/get_label_uuid.c b/mount/get_label_uuid.c index 310de6dc8..488bd28df 100644 --- a/mount/get_label_uuid.c +++ b/mount/get_label_uuid.c @@ -1,3 +1,4 @@ +#ifndef HAVE_BLKID /* * Get label. Used by both mount and umount. */ @@ -43,7 +44,20 @@ is_raid_partition(int fd) { #endif } -/* for now, only ext2, ext3, xfs, ocfs are supported */ +int +is_reiserfs_magic_string (const char *magic) { + return (!strncmp(magic, REISERFS_SUPER_MAGIC_STRING, + strlen(REISERFS_SUPER_MAGIC_STRING)) || + !strncmp(magic, REISER2FS_SUPER_MAGIC_STRING, + strlen(REISER2FS_SUPER_MAGIC_STRING)) || + !strncmp(magic, REISER3FS_SUPER_MAGIC_STRING, + strlen(REISER3FS_SUPER_MAGIC_STRING))); +} + +/* + * Get both label and uuid. + * For now, only ext2, ext3, xfs, ocfs, reiserfs are supported + */ int get_label_uuid(const char *device, char **label, char *uuid) { int fd; @@ -54,6 +68,7 @@ get_label_uuid(const char *device, char **label, char *uuid) { struct jfs_super_block jfssb; struct ocfs_volume_header ovh; /* Oracle */ struct ocfs_volume_label olbl; + struct reiserfs_super_block reiserfssb; fd = open(device, O_RDONLY); if (fd < 0) @@ -112,7 +127,19 @@ get_label_uuid(const char *device, char **label, char *uuid) { } rv = 0; } + else if (lseek(fd, REISERFS_DISK_OFFSET_IN_BYTES, SEEK_SET) + == REISERFS_DISK_OFFSET_IN_BYTES + && read(fd, (char *) &reiserfssb, sizeof(reiserfssb)) + == sizeof(reiserfssb) + && is_reiserfs_magic_string(reiserfssb.s_magic)) { + namesize = sizeof (reiserfssb.s_label); + if ((*label = calloc(namesize + 1, 1)) != NULL) + memcpy(*label, reiserfssb.s_label, namesize); + memcpy(uuid, reiserfssb.s_uuid, sizeof (reiserfssb.s_uuid)); + rv = 0; + } close(fd); return rv; } +#endif |