topic privileges in Operating System - Linux

privileges

Tonatiuh — Fri, 24 Jun 2005 12:41:09 GMT

Red Hat Enterprise Linux 3.0

I want user A have READ privileges to all files owned by user B.

How can I do that?

Re: privileges

Tonatiuh — Fri, 24 Jun 2005 13:56:31 GMT

[root@ias97 root]# setfacl -m user:MyUser:r /opt/oracle/as/9.0.4/
setfacl: /opt/oracle/as/9.0.4: Operation not supported

Any idea about why it shows this problem?

Re: privileges

Ivan Ferreira — Fri, 24 Jun 2005 14:26:21 GMT

Ensure that you have the acl mount option on fstab.

But, if you planify and use correctly the UPG scheme and set group ID on directories, you wont need ACL's. The administration cam be complex.

Re: privileges

Tonatiuh — Fri, 24 Jun 2005 14:34:21 GMT

My /etc/fstab looks like this:

LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/sda2 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

But I do not know what to do to incllude the ACL in fstab.

Re: privileges

xyko_1 — Fri, 24 Jun 2005 14:54:58 GMT

Hi Tonatiuh,

If I understand your point, if you put user A and B on the same group and chmod 740 all files owned by user B you will have user B with all privileges, user A read only (A will not write nor execute) and no privileges at all to others.

I hope it solve your problem.

Regards,
Xyko

Re: privileges

Ivan Ferreira — Fri, 24 Jun 2005 15:14:53 GMT

Change the line:

LABEL=/ / ext3 defaults 1 1

To

LABEL=/ / ext3 defaults, acl 1 1

If the files/directories is under the / filesytem.

Re: privileges

Tonatiuh — Fri, 24 Jun 2005 15:56:05 GMT

xyko,

I cannot change the privileges of each file owned by user B, as the are files of a producto with a great variety o privileges.

I need to give to user A, his own read privilege.