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authorJeff Dike <jdike@addtoit.com>2007-05-06 14:51:00 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:13:00 -0700
commit1d94cda04eb82feb87c932ac3d4aef1e9dc78a43 (patch)
tree38883b3d8a45013ab58eacad7b85ad079f2cdcf9
parent48b201846901c1780fbc7ea779dcc8aa8ab8e16b (diff)
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: 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>
-rw-r--r--arch/um/os-Linux/start_up.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 5178eba9afa..1244179e6c8 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -17,6 +17,7 @@
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/mman.h>
+#include <sys/resource.h>
#include <asm/unistd.h>
#include <asm/page.h>
#include <sys/types.h>
@@ -329,8 +330,32 @@ static void __init check_ptrace(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)
{
+ /* Print out the core dump limits early */
+ check_coredump_limit();
+
check_ptrace();
/* Need to check this early because mmapping happens before the