gencore() does not dump core of shared memory segments
 

Hi All,

I have a simple program program that calls gencore() system call to dump core of process image. This program attches to a shared memory segment before calling gencore().

But the generated core does not conatin the dump of shared memory segment. I changed the ulimit to unlimited. I could not find any flag that needs to be set to achieve this.

Then I changed my program so that it would call riase(SIGABRT) and before that I set a few flags like this

struct sigaction action;
action.sa_flags = SA_FULLDUMP;
action.sa_handler = SIG_DFL;
sigemptyset(&action.sa_mask);
sigaction(6, &action, NULL);
fprintf(stderr,"dumping the core\n");
raise(SIGABRT);

This SA_FULLDUMP allowed the shared memory segments to be dumped as well. By default that is not enabled. II program is working perfectly fine. But I want to use gencore routine only.

Does anyon know which flags to set to make gencore() dump shared memory segments also?

Thanks in advance
Anubhuti