tar xf ISOFILE

[balanga]

When extracting files from an ISO using tar xf ISOFILE I get:-

No name and/or group mapping for uid,gid : (0,0)

Can I either suppress this msg or map some uid,gid to the files?

 

[a6h]

Are you doing that over NFS? What about 7z x file.iso? Same error?

Can you mount it?

$ mdconfig -a -t vnode -f file.iso

md0

# mount -t cd9660 /dev/md0 /mnt
# umount /mnt

 

[SirDice]

Are you extracting them as a user? Then you won't be able to set the ownership of files/directories that are owned by root:wheel (which is what uid 0 gid 0 is).

 

[balanga]

Are you doing that over NFS? What about 7z x file.iso? Same error?

Can you mount it?

$ mdconfig -a -t vnode -f file.iso

md0

# mount -t cd9660 /dev/md0 /mnt
# umount /mnt

It's not an error. The ISO extracts OK I just get these warning msgs about ownership.

As a matter of fact, I am doing it with an NFS mounted ISO and extracting to an NFS mounted share.

I'll try doing locally and see if it makes a difference.

 

[balanga]

Just tried locally, and don't see any of these warnings, so will look at permissions on the NFS share.

 

[SirDice]

and extracting to an NFS mounted share.

so will look at permissions on the NFS share.

It's called "root squash", which means that root:wheel owned files are 'translated' to nobody:nobody as a security measure. It's a bit of security risk to allow root owned files on NFS shares.