Add a new compat syscall clock_settime64 specific for timespec64, It can solve y2038 in below scenarios:
1, 64bit kernel, 32bit process, 32bit time_t, go to clock_settime, no break, y2038 not safe. 3, 64bit kernel, 32bit process, 64bit time_t, go to clock_settime64 by the help of libcobalt, no break, y2038 safe. Signed-off-by: chensong <[email protected]> --- kernel/cobalt/posix/syscall32.c | 13 +++++++++++++ kernel/cobalt/posix/syscall32.h | 4 ++++ 2 files changed, 17 insertions(+) diff --git a/kernel/cobalt/posix/syscall32.c b/kernel/cobalt/posix/syscall32.c index a5dc6e4..bd698a1 100644 --- a/kernel/cobalt/posix/syscall32.c +++ b/kernel/cobalt/posix/syscall32.c @@ -35,6 +35,7 @@ #include "mqueue.h" #include "io.h" #include "../debug.h" +#include <cobalt/kernel/time.h> COBALT_SYSCALL32emu(thread_create, init, (compat_ulong_t pth, @@ -184,6 +185,18 @@ COBALT_SYSCALL32emu(clock_settime, current, return __cobalt_clock_settime(clock_id, &ts); } +COBALT_SYSCALL32emu(clock_settime64, current, + (clockid_t clock_id, + const struct __kernel_timespec __user *u_ts)) +{ + struct timespec64 ts64; + + if (cobalt_get_timespec64(&ts64, u_ts)) + return -EFAULT; + + return __cobalt_clock_settime(clock_id, &ts64); +} + COBALT_SYSCALL32emu(clock_adjtime, current, (clockid_t clock_id, struct old_timex32 __user *u_tx)) { diff --git a/kernel/cobalt/posix/syscall32.h b/kernel/cobalt/posix/syscall32.h index 0b5e26d..716c5e3 100644 --- a/kernel/cobalt/posix/syscall32.h +++ b/kernel/cobalt/posix/syscall32.h @@ -63,6 +63,10 @@ COBALT_SYSCALL32emu_DECL(clock_settime, (clockid_t clock_id, const struct old_timespec32 __user *u_ts)); +COBALT_SYSCALL32emu_DECL(clock_settime64, + (clockid_t clock_id, + const struct __kernel_timespec __user *u_ts)); + COBALT_SYSCALL32emu_DECL(clock_adjtime, (clockid_t clock_id, struct old_timex32 __user *u_tx)); -- 2.7.4
