topic Re: permissions in Operating System - HP-UX

permissions

Peter Lyons_1 — Wed, 19 Dec 2001 14:48:26 GMT

Scenario: User A needs to create a file that user B (who is in a different group) needs to be able to have modify access on. User B cannot use user A's group as a secondary group as it in the dba group. Changing the umask for either user is not an option (unless there is a way of specifying that only a certain path gets the altered umask). The file is generated automatically by an application. Any ideas?

Re: permissions

Mark van Hassel — Wed, 19 Dec 2001 14:53:17 GMT

Hi,

you can make use of ACLs for extended permissions, see "man acl" for more info.

HtH,

Mark

Re: permissions

Jeff Machols — Wed, 19 Dec 2001 14:54:22 GMT

you can use ACL's (access control lists) to give a specific user access to a specific file.

man acl will give you all the details you need

Re: permissions

Helen French — Wed, 19 Dec 2001 14:56:31 GMT

Hi Peter,

U can use the "ACL" permissions for doing this. You can assign specific permission for specific users on specific files.

See man pages of 'chacl' command. Suppose A created a file 'file1' and if B wants write access to it,
# chacl 'B.%=rwx' file1.

You may put this in the crontab if needed.

HTH,
Shiju

Re: permissions

Thierry Poels_1 — Wed, 19 Dec 2001 14:57:17 GMT

Hi,

one option is:
1. create a subdirectory e.g. /subdir
2. chgrp GROUPB /subdir
3. chmod g+S /subdir
--> all files created in /subdir will inherit GROUPB, so userB should be able to read the files.

An other option is to use ACL.

good luck,
Thierry.

Re: permissions

Ian Dennison_1 — Wed, 19 Dec 2001 14:59:36 GMT

User A is added to the same Group as User B, performs a 'newgrp [same Group Name]' command before creating the file. User B can see this as a member of the group.

This works on the command line. Is this a workable solution for you?

Share and Enjoy! Ian

Re: permissions

Peter Lyons_1 — Fri, 21 Dec 2001 19:00:31 GMT

I have never used acl before and I got the following error when trying to use the chacl command. Do I have to enable acl somehow? Function is not available (errno = 251)

Re: permissions

Helen French — Fri, 21 Dec 2001 19:12:09 GMT

Hi Peter:

Chech these threads for :
http://us-support2.external.hp.com/cki/bin/doc.pl/sid=f1e6b2b80507822a00/screen=ckiDisplayDocument?docId=200000055662879

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=f1e6b2b80507822a00/screen=ckiDisplayDocument?docId=200000024602386

Shiju

Re: permissions

Deshpande Prashant — Fri, 21 Dec 2001 19:34:05 GMT

HI
HPUX 11.00 with vxfs file system (JFS older than 3.3) does not support ACLs.

Check this link -
http://www.docs.hp.com/hpux/onlinedocs/B3929-90007/B3929-90007.html

Thanks.
Prashant.