From: Alistair Francis <alistair.fran...@wdc.com>
Add support for the clock_gettime64/clock_settime64 syscalls.
If your host is 64-bit or is 32-bit with the *_time64 syscall then the
timespec will correctly be a 64-bit time_t. Otherwise the host will
return a 32-bit time_t which will be rounded to 64-bits. This will be
incorrect after y2038.
Signed-off-by: Alistair Francis <alistair.fran...@wdc.com>
Reviewed-by: Laurent Vivier <laur...@vivier.eu>
Message-Id:
<4a7fd05532400d10aa0f684c9043e2ac7b34d91c.1584051142.git.alistair.fran...@wdc.com>
Signed-off-by: Laurent Vivier <laur...@vivier.eu>
---
linux-user/syscall.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index ea1c84dc5de5..661404687080 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1229,6 +1229,22 @@ static inline abi_long target_to_host_timespec(struct
timespec *host_ts,
}
#endif
+#if defined(TARGET_NR_clock_settime64)
+static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
+ abi_ulong target_addr)
+{
+ struct target__kernel_timespec *target_ts;
+
+ if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+ __get_user(host_ts->tv_sec, &target_ts->tv_sec);
+ __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
+ unlock_user_struct(target_ts, target_addr, 0);
+ return 0;
+}
+#endif
+
static inline abi_long host_to_target_timespec(abi_ulong target_addr,
struct timespec *host_ts)
{
@@ -11493,6 +11509,18 @@ static abi_long do_syscall1(void *cpu_env, int num,
abi_long arg1,
return ret;
}
#endif
+#ifdef TARGET_NR_clock_settime64
+ case TARGET_NR_clock_settime64:
+ {
+ struct timespec ts;
+
+ ret = target_to_host_timespec64(&ts, arg2);
+ if (!is_error(ret)) {
+ ret = get_errno(clock_settime(arg1, &ts));
+ }
+ return ret;
+ }
+#endif
#ifdef TARGET_NR_clock_gettime
case TARGET_NR_clock_gettime:
{
@@ -11504,6 +11532,17 @@ static abi_long do_syscall1(void *cpu_env, int num,
abi_long arg1,
return ret;
}
#endif
+#ifdef TARGET_NR_clock_gettime64
+ case TARGET_NR_clock_gettime64:
+ {
+ struct timespec ts;
+ ret = get_errno(clock_gettime(arg1, &ts));
+ if (!is_error(ret)) {
+ ret = host_to_target_timespec64(arg2, &ts);
+ }
+ return ret;
+ }
+#endif
#ifdef TARGET_NR_clock_getres
case TARGET_NR_clock_getres:
{
--
2.25.1
