topic Re: group id in Operating System - HP-UX

group id

malay boy — Thu, 10 Jun 2004 03:17:05 GMT

$ id
uid=255(htoo) gid=116(bscs) groups=9998(Users)
$ pwd
/home/htoo
$ id
uid=255(htoo) gid=116(bscs) groups=9998(Users)
$ touch cc.c
$ ls -l cc.c
-rw-r--r-- 1 htoo daemon 0 Jun 10 16:14 cc.c

Please see above.This is very funny.Whenever I do a touch on a file the group change to daemon even I'm not in this group.

regards
mB

Re: group id

Robert-Jan Goossens — Thu, 10 Jun 2004 03:26:10 GMT

Hi mB,

what does "# id daemon" report, or "# grep daemon /etc/group"

Robert-Jan

Re: group id

malay boy — Thu, 10 Jun 2004 03:28:22 GMT

Thanks Jan.

$ id daemon
uid=1(daemon) gid=1(daemon)
$ grep daemon /etc/group
daemon:*:1:daemon
$ ypcat group|grep daemon

By the way we are using NIS.

regards
mB

Re: group id

Fred Ruffet — Thu, 10 Jun 2004 03:29:32 GMT

please submit ouput of
ls -ld /home/htoo
(looking for acls)
and of
grep -e "bscs" -e "daemon" /etc/group
(looking for strangeness :)

Regards,

Fred

Re: group id

Jeroen Peereboom — Thu, 10 Jun 2004 03:43:35 GMT

Maybe setgid on the directory?
Try the same in another directory to see if the same problem occurs.

(and remove the file before touching again)

JP.

Re: group id

malay boy — Thu, 10 Jun 2004 03:45:26 GMT

Fred ,
You are getting somewhere.here are the output of the :

# ls -ld /home/htoo
lrwxrwxrwx 1 root system 18 Jun 10 16:40 htoo -> /tmp_mnt/home/htoo

# ls -ld /tmp_mnt/home/htoo
drwxrwxrwx 11 root daemon 1536 Jun 10 16:43 /tmp_mnt/home/htoo

FYI we are using auto mount .

I try ti change the owner on /tmp_mnt/home/htoo it give below error :

# chown htoo:bscs htoo
chown: htoo: Not owner

regards
mB

Re: group id

Jeroen Peereboom — Thu, 10 Jun 2004 03:47:33 GMT

Oops, forget the setgid remark in my previous reply. (Should be sticky bit, but it is not relevant for groups).

JP

Re: group id

Fred Ruffet — Thu, 10 Jun 2004 03:48:13 GMT

You must be root to chown from root to htoo.

regards,

Fred

Re: group id

Fred Ruffet — Thu, 10 Jun 2004 03:50:29 GMT

could you try to touch directly in /tmp_mnt/home/htoo with user htoo. Maybe the linking is messing it up.

regards,

Fred

Re: group id

malay boy — Thu, 10 Jun 2004 03:52:41 GMT

Fred,
I am using root.But it give me not owner error .... any idea ?.

regards
mB

Re: group id

Robert-Jan Goossens — Thu, 10 Jun 2004 04:30:48 GMT

automounted nfs dir ? try to change the permissions on the server.

Re: group id

malay boy — Thu, 10 Jun 2004 04:44:42 GMT

Robert,
I did change the source nfs server directory.But the result still the same...

regards
mB

Re: group id

Fred Ruffet — Thu, 10 Jun 2004 04:51:56 GMT

Hmmm... I didn't understand that where automount of NFS. What is the ID of htoo on distant server ? What is the ID of daemon on distant server ? What is the content of the /etc/exports file for the line concerning your directory ?

All of this might help, as long as permissions are set on the other server and replicated as UIDs on local. options of export may also have influence.

regards,

Fred

Re: group id

Robert-Jan Goossens — Thu, 10 Jun 2004 04:52:52 GMT

could you check the permissions off,

# ll /usr/bin/chown
-r-xr-xr-x 1 bin bin 24576 Nov 7 1997 /usr/bin/chown

Re: group id

Jeroen Peereboom — Thu, 10 Jun 2004 06:26:40 GMT

As a sidestep you can give ls an option (-n ?) to have numerical IDs in the output. Names are just a translation from numbers, so let's first make sure the numbers are right and check the translation of the number to names later (passwd, nis, ...)

JP

Re: group id

Armin Kunaschik — Fri, 11 Jun 2004 03:26:28 GMT

Some things to try:
- I learned not to trust the id command output,
especially in NIS environments with HP-UX servers.
- Find out manually, what groupset you are in:
ypcat passwd|grep htoo
ypcat group|grep htoo

- Check for local accounts in /etc/passwd and /etc/group overriding the NIS settings!

- Check the directory for sedgid flags and remove (if appropriate):
chmod g-s

Regards,
Armin

Re: group id

Elmar P. Kolkman — Fri, 11 Jun 2004 04:37:15 GMT

I think the problem is not necessarily on the machine you located the problem, but on the server where /tmp_mnt/home/htoo is mounted from.

Checkout: bdf /tmp/home/htoo

Also checkout any mount options.
And of course export options. Could it be you have some mapping for group id's?
Checkout output of showmount -e .