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uml: print coredump limits

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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: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-05-06 14:51:00 -07:00
committed by Linus Torvalds
parent 48b2018469
commit 1d94cda04e
1 changed files with 25 additions and 0 deletions
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25
arch/um/os-Linux/start_up.c
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@@ -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