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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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gcore(1)                                                           User Commands                                                          gcore(1)

NAME
gcore - get core images of running processes SYNOPSIS
gcore [-pgF] [-o filename] [-c content] process-id... DESCRIPTION
The gcore utility creates a core image of each specified process. By default, the name of the core image file for the process whose process ID is process-id will be core.process-id. OPTIONS
The following options are supported: -c content Produces core image files with the specified content. The content description uses the same tokens as in coreadm(1M). The -c option does not apply to cores produced due to the -p or -g flags. -F Force. Grabs the target process even if another process has control. -g Produces core image files in the global core file repository with the global content as configured by coreadm(1M). The com- mand will fail if the user does not have permissions to the global core file repository. -o filename Substitutes filename in place of core as the first part of the name of the core image files. filename can contain the same tokens to be expanded as the paths in coreadm(1M). -p Produces a core image file in the process-specific location with the process-specific content for each process as config- ured by coreadm(1M). The command will fail if the user does not have permissions to the per-process core file repository. OPERANDS
The following operand is supported: process-id process ID EXIT STATUS
The following exit values are returned: 0 On success. non-zero On failure, such as non-existent process ID. FILES
core.process-id core images ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWtoo | +-----------------------------+-----------------------------+ |Interface Stability |See below. | +-----------------------------+-----------------------------+ Command Syntax is Evolving. Output Format(s) are Unstable. SEE ALSO
kill(1), coreadm(1M), setrlimit(2), core(4), proc(4), attributes(5) NOTES
gcore is unaffected by the setrlimit(2) system call using the RLIMIT_CORE value. SunOS 5.10 11 Feb 2004 gcore(1)
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