setresuid behavior

[Matt Shaffer_1]

I am opening this forum on behalf of our app development team. They are trying to capture a core file when a user logs in to their app. They set the max core size to 50M by using ulimit -c. The program calls the setresuid command so it runs as the logged in user. The core file is not being created and they want to know if the setresuid function resets the ulimit -c settings. This is on a RHEL3U4 box. Please let me know if more info is needed.

[Matt Shaffer_1]

Additional info: It only works when I remove the call to "setresuid".

[Vitaly Karasik_1 · Accepted solution]

regular user cannot increase limits which he gets from ulimit. If you want to increase limits, use /etc/security/limits.conf

[Matt Shaffer_1]

the reply I got back helped.