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coredump: Use 64bit time for unix time of coredump

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struct timeval on 32-bit systems will have its tv_sec
value overflow in year 2038 and beyond.
Use a 64 bit value to print time of the coredump in seconds.
ktime_get_real_seconds is chosen here for efficiency reasons.

Suggested by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Arnd Bergmann 2015-11-25 16:22:25 +01:00 committed by Al Viro
parent 0125f504ed
commit 03927c8acb
1 changed files with 5 additions and 3 deletions
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8
fs/coredump.c
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@ -32,6 +32,7 @@
#include <linux/pipe_fs_i.h>
#include <linux/oom.h>
#include <linux/compat.h>
#include <linux/timekeeping.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
@ -232,9 +233,10 @@ static int format_corename(struct core_name *cn, struct coredump_params *cprm)
break;
/* UNIX time of coredump */
case 't': {
struct timeval tv;
do_gettimeofday(&tv);
err = cn_printf(cn, "%lu", tv.tv_sec);
time64_t time;
time = ktime_get_real_seconds();
err = cn_printf(cn, "%lld", time);
break;
}
/* hostname */