NuB Q: File perm prob

[darkangel]

I am trying to write onto a mounted fat32 partition (Datadisk) in RH 9.0. Only the root has permission to write there as of now. I have tried to use chmod to change file permissions on the mounted partition to allow other users to write there but it returns a error....
[root@XXX Datadisk]# chmod o=rwx test.txt
chmod: changing permissions of `test.txt' (requested: 0757, actual: 0755): Operation not permitted


My fstab looks like
LABEL=/ / ext3 defaults 1 1
/dev/hda5 /Datadisk vfat rw 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/hda2 swap swap defaults 0 0
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner,kudzu 0 0

Any ideas?? Thanks in advance.

DA

[Giro]

Add user to the options for the drive like so this should allow all users access.

/dev/hda5 /Datadisk vfat user,rw 0 0

[Dolda2000]

chmod doesn't work on FAT filesystems since FAT has no storage for the file mode.

[darkangel]

Hi Giro,

Thanks for the suggestion but it did not help. Now my fstab looks like

LABEL=/ / ext3 defaults 1 1
/dev/hda5 /Datadisk vfat user,rw 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/hda2 swap swap defaults 0 0
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner,kudzu 0 0

Any new ideas??

DA

[Hellmasker]

my fstab doesnt have user entires in it, but it has umask=0 which i _think_ means all i/o is done as user 0 (root)

[Dolda2000]

In fact, umask=0 means that all modes are set to 0777 (Since 0777 == (0777 & ~0) - the umask specifies what permission bits to "remove", so to speak. It defaults to 0022, which gives a mode of 0755).

I'd also suggest adding the umask=0 option, unless you have security issues on your system.

[darkangel]

I did manage to fix it. I changed my fstab to make the Fat32 partition noauto to stop it from being loaded at boot by root and the root getting all permissions. I used my user account to mount it and now I can write to it wtout any problems. My new fstab looks like

LABEL=/ / ext3 defaults 1 1
/dev/hda5 /Datadisk vfat noauto,user,rw 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/hda2 swap swap defaults 0 0
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner,kudzu 0 0

Appreciate all the help

DA