RE: Shared memory: permission denied.
Marino,
I think Your IDS was started by 'root'.
You shared memory segments are accessible only by
'root' and members of the 'system' group.
Please, note, that 'onstat' is owned by 'informix:informix'
and doesn't have setuid bit set:
informix@db-1:~$ ls -l bin/onstat -rwxr-sr-x 1 informix informix 3148230 Mar 21 19:08 bin/onstat*
informix@db-1:~$ ls -l bin/oninit
-rwsr-sr-- 1 root informix 8497828 Mar 21 19:08 bin/oninit*
Note, that 'oninit' os owned by 'root' and has setuid bit set.
This is why in Your case 'oninit' is able to access Informix
shared memory segments, and 'onstat' - unable.
When You start IDS under 'informix', 'R' and 'V' shared memory
segments are owned by 'root:informix' and have 660 permissions.
------------------------------------------
Alexey Sonkin
Senior Database Administrator
> -----Original Message-----
> From: Marino Decaro [mailto:dmvposta@hotmail.com]
> Sent: Wednesday, July 16, 2003 2:32 PM
> To: informix-list@iiug.org
> Subject: Shared memory: permission denied.
>
>
> Hi all,
>
> Informix Dynamic Server Version 9.40.FC1
>
> I receice the error Shared memory: permission denied when I
> run onstat -
>
> and this is the output of ipcs
>
> Message Queues:
> T ID KEY MODE OWNER GROUP
> q 0 0x4190051c --rw------- root system
>
> Shared Memory:
> T ID KEY MODE OWNER GROUP
> m 0 0x4d728d38 --rw-rw-r-- lanman system
> m 1 0x435dce60 --rw-rw-rw- root system
> m 258 0x52574801 --rw-rw---- root system
> m 259 0x52574802 --rw-rw---- root system
> m 260 0x52574803 --rw-rw-rw- root system
> m 261 0x52574804 --rw-rw-rw- root system
>
> I think the problem is ... lanman but I am not sure
>
> Can someone help me?
>
> Ciao.
> Marino
>
>
>
sending to informix-list