Package: pmount Version: 0.9.23-9 Severity: normal 1) Mount smth with command /usr/bin/pmount --debug PART 2) Look at pmount output and see no evidence of HAVE_BLKID code executed 3) Check ldd and package dependency and indeed there is libblkid 4) Look at the HAVE_BLKID code in src/pmount.c. Suspect that tp = blkid_get_tag_value(c, "TYPE", device) is NULL. pmount don't have a message for this case, sadly. 5) Now run (already SUID) /usr/bin/pmount --debug as root (e.g. with sudo) and see that: > blkid gave FS vfat for '/dev/sdb1'
Interesting why tp is NULL in SUID case but not NULL when run as root. Tried with ext4 and vfat/fat32 partitions. lsblk -f detects fs types both without sudo and suid.