Disabling program core dumps

Willem Jan Withagen wjw at digiware.nl
Thu Apr 27 13:30:51 UTC 2017


On 27-4-2017 14:48, Edward Napierala wrote:
> There's the kern.coredump sysctl, which makes it possible to disable
> coredumping globally.

Yup, that one I knew.
But that is global, where as I'd like to run:

	setcoreoff();
	EXPECT_DEATH(test)
	setcoreon()

And for that I need some micro controls from with in the program.
Hence my fiddling with (get|set)_rlimits.

--WjW

> 
> 2017-04-27 13:36 GMT+01:00 Willem Jan Withagen <wjw at digiware.nl
> <mailto:wjw at digiware.nl>>:
> 
>     Hi,
> 
>     Running (googletest) tests some are expected to die: EXPECT_DEATH().
>     This normally dumps a core, but since it is expected that core is rather
>     useless.
> 
>     Thusfar I've found the best way to limit a program to dump core (from
>     within the program) is to set its RLIMIT_CORE to 0.
> 
>     So I can do this before the test, and then set the old size back once
>     the test is finished.
> 
>     Or is there another way, like setting a flag in process state (which I
>     have not been able to find)
> 
>     --WjW
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