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Neil Horman 7dc0b22e3c core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe ... For some time /proc/sys/kernel/core_pattern has been able to set its output destination as a pipe, allowing a user space helper to receive and intellegently process a core. This infrastructure however has some shortcommings which can be enhanced. Specifically: 1) The coredump code in the kernel should ignore RLIMIT_CORE limitation when core_pattern is a pipe, since file system resources are not being consumed in this case, unless the user application wishes to save the core, at which point the app is restricted by usual file system limits and restrictions. 2) The core_pattern code should be able to parse and pass options to the user space helper as an argv array. The real core limit of the uid of the crashing proces should also be passable to the user space helper (since it is overridden to zero when called). 3) Some miscellaneous bugs need to be cleaned up (specifically the recognition of a recursive core dump, should the user mode helper itself crash. Also, the core dump code in the kernel should not wait for the user mode helper to exit, since the same context is responsible for writing to the pipe, and a read of the pipe by the user mode helper will result in a deadlock. This patch: Remove the check of RLIMIT_CORE if core_pattern is a pipe. In the event that core_pattern is a pipe, the entire core will be fed to the user mode helper. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Cc: <martin.pitt@ubuntu.com> Cc: <wwoods@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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alpha	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild	18 years ago
arm	…
avr32	…
blackfin	…
cris	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild	18 years ago
frv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild	18 years ago
h8300	…
i386	…
ia64	…
m32r	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild	18 years ago
m68k	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild	18 years ago
m68knommu	…
mips	core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe	18 years ago
parisc	…
powerpc	pcmcia: CompactFlash driver for PA Semi Electra boards	18 years ago
ppc	…
s390	…
sh	…
sh64	…
sparc	…
sparc64	core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe	18 years ago
um	…
v850	…
x86	core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe	18 years ago
x86_64	KCONFIG: Make "Instrumentation support" non-EXPERIMENTAL	18 years ago
xtensa	…