[Bug 1089408] Automatic mounting of external exfat volume results in wrong permissions
http://bugzilla.suse.com/show_bug.cgi?id=1089408
http://bugzilla.suse.com/show_bug.cgi?id=1089408#c9
Thomas Blume
OK. I have set in /etc/fstab:
/dev/sdf1 /run/media/ exfat rw,nodev,nosuid,noatime,uid=1000,gid=100,iocharset=utf8,errors=remount-ro, dmask=0077,fmask=1177
It gives the default permissions which I think are both secure and usable.
There are 2 problems with that:
1. It hard codes the uid and gid which may be OK for a single user system but obviously won't work for multiple users.
Instead of hardcoding uid and gid, you could just add the option user, e.g.: /dev/sdf1 /run/media/ exfat rw,nodev,nosuid,noatime,user,iocharset=utf8,errors=remount-ro,dmask=0077,fmask=1177 That way you can mount it as non-root user which automatically gives you the correct uid,gid. It is also possible to give the mount options directly to udisksctl, e.g.: udisksctl mount --block-device /dev/sdf1 --options dmask=0077,fmask=1177
2. The combination 'rw,errors=remount-ro' makes it remount correctly as ro in case of write protected memory card but that is not reflected in the permissions. Of course permission-wise it is safe but still that's a usability issue.
Does this also happen when you do a user mount as suggested above?
BTW I don't know why but /proc/mounts shows user_id and group_id 0, which is not what fstab instructs:
/dev/sdf1 /run/media fuseblk ro,nosuid,nodev,noatime,user_id=0,group_id=0,default_permissions,allow_other, blksize=4096 0 0 /dev/sdf1 /var/run/media fuseblk ro,nosuid,nodev,noatime,user_id=0,group_id=0,default_permissions,allow_other, blksize=4096 0 0
Still ls shows that files and dirs are owned by uid=1000 and gid=100. I don't know if that is another bug.
Again, is this also shown when you do a user mount? -- You are receiving this mail because: You are on the CC list for the bug.
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