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[PATCH v4 2/3] linux-user/syscall: Add support for clock_gettime64/clock
From: |
Alistair Francis |
Subject: |
[PATCH v4 2/3] linux-user/syscall: Add support for clock_gettime64/clock_settime64 |
Date: |
Tue, 3 Mar 2020 16:44:54 -0800 |
Add support for the clock_gettime64/clock_settime64 syscalls. Currently
we only support these syscalls when running on 64-bit hosts.
Signed-off-by: Alistair Francis <address@hidden>
---
linux-user/syscall.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index c000fb07c5..82468e018d 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1236,6 +1236,22 @@ static inline abi_long target_to_host_timespec(struct
timespec *host_ts,
}
#endif
+#if defined(TARGET_NR_clock_settime64) && HOST_LONG_BITS == 64
+static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
+ abi_ulong target_addr)
+{
+ struct target_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)
{
@@ -11465,6 +11481,20 @@ static abi_long do_syscall1(void *cpu_env, int num,
abi_long arg1,
return ret;
}
#endif
+#ifdef TARGET_NR_clock_settime64
+# if HOST_LONG_BITS == 64
+ 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
+#endif
#ifdef TARGET_NR_clock_gettime
case TARGET_NR_clock_gettime:
{
@@ -11476,6 +11506,19 @@ static abi_long do_syscall1(void *cpu_env, int num,
abi_long arg1,
return ret;
}
#endif
+#ifdef TARGET_NR_clock_gettime64
+# if HOST_LONG_BITS == 64
+ 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
+#endif
#ifdef TARGET_NR_clock_getres
case TARGET_NR_clock_getres:
{
--
2.25.1