can't use chown with exfat!

[bester69]

can't use chown with exfat!, do you know whats wrong with exfat?...

I mounted filesystem and tried to give user permissons with chown, but wasnt possible.. It was pretty weird to me, so had to re-format to btrfs

thanks

[sunrat]

exfat does not support user permissions.

[bester69]

exfat does not support user permissions.

Cant write within mounted point if not being the root

sudo mount -t exfat /dev/nvme0n1p8 aa
myuser@hall:~/aa$ sudo touch ss
myuser@hall:~/aa$ sudo chown myuser: ss
chown: changing ownership of 'ss': Operation not permitted

myuser@hall:~$ sudo chown myuser: aa
chown: changing ownership of 'aa': Operation not permitted

[p.H]

Permissions on exFAT, FAT or NTFS are defined at mount time with mount options.
if using the exfat-fuse driver :

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man mount.exfat-fuse

if using the exfat kernel driver, I cannot find any man page, hopefully options are the same.

[Edit] : command corrected

[bester69]

Permissions on exFAT, FAT or NTFS are defined at mount time with mount options.
if using the exfat-fuse driver :

Code: Select all

man mkfs.exfat-fuse

if using the exfat kernel driver, I cannot find any man page, hopefully options are the same.

Thanks p.H

I dont need being root user to write in ntfs or vfat partitions (exfat is working different)..I dont know how to mount it with user permisson

[bw123]

Haven't used it might be a good answer here?
https://www.google.com/search?&q=write+ ... being+root

[reinob]

I dont need being root user to write in ntfs or vfat partitions (exfat is working different)..I dont know how to mount it with user permisson :?

Normally only root can mount partitions. The only exception (that I know of) is if the mount point is defined (by root) in /etc/fstab, including the option "user" (or "users").

This is BTW explained in mount(8).

[p.H]

Mount permission has nothing to do with write permission.

Code: Select all

mount -t exfat -o uid=xxx,gid=xxx,umask=xxx /dev/xxx /xxx

[bester69]

...

[bester69]

Permissions on exFAT, FAT or NTFS are defined at mount time with mount options.
if using the exfat-fuse driver :

Code: Select all

man mkfs.exfat-fuse

if using the exfat kernel driver, I cannot find any man page, hopefully options are the same.

That worked
sudo mount -o rw,users,uid=1000,dmask=007,fmask=117 /dev/nve8 aa

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myuser@hall:~/aa$ mount| grep aa
/dev/nvme0n1p8 on /home/myuser/aa type exfat (rw,nosuid,nodev,noexec,relatime,uid=1000,fmask=0117,dmask=0007,allow_utime=0020,iocharset=utf8,errors=remount-ro)

seem Im unable to remount it to get same result, here the default mount:
sudo mount -o remount,uid=1000,fmask=0117,dmask=0007 aa >>> Not doing anything

Code: Select all

myuser@hall:~$ mount|grep aa
/dev/nvme0n1p8 on /home/myuser/aa type exfat (rw,nosuid,nodev,noexec,relatime,fmask=0022,dmask=0022,iocharset=utf8,errors=remount-ro)

Clearly exfat is working different , with vfat or ntfs you dont have these issues..I will have to use a environment param y bashrc to remember.:

export EXFAT="uid=1000,fmask=0117,dmask=0007"
sudo mount -o $EXFAT /dev/nvme0n1p8 aa

Thanks to all

[p.H]

Clearly exfat is working different , with vfat or ntfs you dont have these issues

It depends how you mount the volume.
ntfs has a different default value for umask/fmask/dmask (0000 - cf. man ntfs-3g) but fat has the same default value as exfat (current process umask - cf. man mount). Default umask in Debian is 0022.