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Commit 1d94cda0 authored by Jeff Dike's avatar Jeff Dike Committed by Linus Torvalds
Browse files

uml: print coredump limits 



Print out core dump limits at boot time.  This is to allow core dumps
to be collected if something goes very wrong and to tell if a core
dump isn't going to happen because of a resource limit.

Signed-off-by: default avatarJeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 48b20184

arch/um/os-Linux/start_up.c

+25 −0
Original line number Original line Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <sys/time.h>

#include <sys/time.h>

#include <sys/wait.h>

#include <sys/wait.h>

#include <sys/mman.h>

#include <sys/mman.h>

#include <sys/resource.h>

#include <asm/unistd.h>

#include <asm/unistd.h>

#include <asm/page.h>

#include <asm/page.h>

#include <sys/types.h>

#include <sys/types.h>
@@ -329,8 +330,32 @@ static void __init check_ptrace(void) 




extern void check_tmpexec(void);

extern void check_tmpexec(void);





static void check_coredump_limit(void)

{

	struct rlimit lim;

	int err = getrlimit(RLIMIT_CORE, &lim);



	if(err){

		perror("Getting core dump limit");

		return;

	}



	printf("Core dump limits :\n\tsoft - ");

	if(lim.rlim_cur == RLIM_INFINITY)

		printf("NONE\n");

	else printf("%lu\n", lim.rlim_cur);



	printf("\thard - ");

	if(lim.rlim_max == RLIM_INFINITY)

		printf("NONE\n");

	else printf("%lu\n", lim.rlim_max);

}



void os_early_checks(void)

void os_early_checks(void)

{

{

	/* Print out the core dump limits early */

	check_coredump_limit();



	check_ptrace();

	check_ptrace();





	/* Need to check this early because mmapping happens before the

	/* Need to check this early because mmapping happens before the