topic Re: How to enable gettign core file on HP 11 in Operating System - HP-UX

How to enable gettign core file on HP 11

Amod — Wed, 03 Dec 2003 23:37:04 GMT

Hello All,

Can someone tell me what I need to do to get a core file after getting segmentation violation. I can see my process is getting
SIGSEGV, but no core file is generated.

I am using HP-UX 11 machine.

Thanks,
Amod

Re: How to enable gettign core file on HP 11

Steven E. Protter — Thu, 04 Dec 2003 00:41:56 GMT

As far as I know core files are enabled by default.

ulimit -a

time(seconds) unlimited
file(blocks) unlimited
data(kbytes) 262144
stack(kbytes) 8192
memory(kbytes) unlimited
coredump(blocks) 0
nofiles(descriptors) 4096

Use the ulimit command to change the coredump block to a reasonable number.

ulimit -c 100

Changes the output to look like this:

[2897#] ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) 262144
stack(kbytes) 8192
memory(kbytes) unlimited
coredump(blocks) 100
nofiles(descriptors) 4096

That should do it.

SEP

Re: How to enable gettign core file on HP 11

Elmar P. Kolkman — Thu, 04 Dec 2003 03:06:37 GMT

Also make sure that the process can write a core file in the current directory of the process. The directory should be writable and no core file (or a writable) exists or there is a writable core file in the directory.

Remember that the core file is not placed in the directory where the process starts, but in its current directory!

Re: How to enable gettign core file on HP 11

Laurent Menase — Thu, 04 Dec 2003 09:38:23 GMT

There is also the setuid bit which prevent to produce a core if the user is not owner of the
file.
ls -l toto
-r-sr-xr-x root bin ... toto
^ this s.