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Full Discussion: core files not getting generated
Operating Systems Solaris core files not getting generated Post 302374033 by achenle on Monday 23rd of November 2009 08:04:47 AM
Old 11-23-2009
Quote:
Originally Posted by jlliagre
However, Solaris doesn't use the Gnu/Linux approach. Core file generation is configured with the coreadm command.

You can set it not to dump cores at all, to dump cores in a specific directory or in the faulty process directory. In the latter case, the directory must be writable by the user running the process.

coreadm(1M) - core file administration (man pages section 1M: System Administration Commands) - Sun Microsystems
I bolded some very important words of that post. They mean the user(s) running the process(es) have the ability to pretty much replace anything and everything in that directory. That could have some incredibly serious security implications.

Also, it's possible that your app has set its own core file size limit to zero. You can use the "plimit" command to work around that. This might work:

Code:
plimit -c unlimited,unlimted PID

If that syntax is incorrect, look at the man page for plimit. If the app doesn't continually reset its core file size limit, that will work.
 

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LEARN ABOUT NETBSD

fincore

FINCORE(1)						    BSD General Commands Manual 						FINCORE(1)

NAME

     fincore -- query in-core status of file pages

SYNOPSIS

     fincore [-qs] file ...

DESCRIPTION

     The fincore utility queries and displays in-core status of specified files.

     Note that the result can already be stale when being output due to other activities in the system.  Thus it should be used only for advisory
     purposes.

     The fincore utility accepts the following options.

     -q        The quiet mode.	Outputs nothing unless the file has in-core pages.

     -s        The summary mode.  Only shows number of pages.

EXAMPLES

     The following example shows that /bin/cat and /bin/cp are fully cached in-core while the other executables are not in-core.  numbers shown in
     the default output are page indexes in the file of each in-core pages.

     % fincore /bin/c*
     /bin/cat: 0 1 2 3
     /bin/chio:
     /bin/chmod:
     /bin/cp: 0 1 2 3 4 5
     /bin/cpio:
     /bin/csh:
     % fincore -s /bin/c*
     /bin/cat: 4 / 4 in-core pages (100.00%)
     /bin/chio: 0 / 5 in-core pages (0.00%)
     /bin/chmod: 0 / 3 in-core pages (0.00%)
     /bin/cp: 6 / 6 in-core pages (100.00%)
     /bin/cpio: 0 / 36 in-core pages (0.00%)
     /bin/csh: 0 / 41 in-core pages (0.00%)

SEE ALSO

     mincore(2)

AUTHORS

     The fincore utility is written by YAMAMOTO Takashi.

CAVEATS

     The concept of page cache is an implementation detail of the kernel.  The fincore utility works using some assumptions on the current imple-
     mentation.  Thus it might stop working in a future version of NetBSD.

BUGS

     The amount of CPU time the current implementation of fincore utility would take is roughly proportional to the file sizes.  Ideally it should
     be proportional to the number of in-core pages.

BSD
								  January 5, 2012							       BSD
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