linux-user/syscall: Add support for clock_gettime64/clock_settime64
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.francis@wdc.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <4a7fd05532400d10aa0f684c9043e2ac7b34d91c.1584051142.git.alistair.francis@wdc.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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@ -1229,6 +1229,22 @@ static inline abi_long target_to_host_timespec(struct timespec *host_ts,
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}
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}
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#endif
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#endif
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#if defined(TARGET_NR_clock_settime64)
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static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
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abi_ulong target_addr)
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{
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struct target__kernel_timespec *target_ts;
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if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
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return -TARGET_EFAULT;
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}
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__get_user(host_ts->tv_sec, &target_ts->tv_sec);
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__get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
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unlock_user_struct(target_ts, target_addr, 0);
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return 0;
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}
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#endif
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static inline abi_long host_to_target_timespec(abi_ulong target_addr,
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static inline abi_long host_to_target_timespec(abi_ulong target_addr,
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struct timespec *host_ts)
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struct timespec *host_ts)
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{
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{
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@ -11458,6 +11474,18 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
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return ret;
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return ret;
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}
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}
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#endif
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#endif
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#ifdef TARGET_NR_clock_settime64
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case TARGET_NR_clock_settime64:
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{
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struct timespec ts;
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ret = target_to_host_timespec64(&ts, arg2);
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if (!is_error(ret)) {
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ret = get_errno(clock_settime(arg1, &ts));
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}
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return ret;
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}
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#endif
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#ifdef TARGET_NR_clock_gettime
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#ifdef TARGET_NR_clock_gettime
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case TARGET_NR_clock_gettime:
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case TARGET_NR_clock_gettime:
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{
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{
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@ -11469,6 +11497,17 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
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return ret;
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return ret;
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}
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}
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#endif
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#endif
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#ifdef TARGET_NR_clock_gettime64
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case TARGET_NR_clock_gettime64:
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{
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struct timespec ts;
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ret = get_errno(clock_gettime(arg1, &ts));
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if (!is_error(ret)) {
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ret = host_to_target_timespec64(arg2, &ts);
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}
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return ret;
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}
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#endif
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#ifdef TARGET_NR_clock_getres
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#ifdef TARGET_NR_clock_getres
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case TARGET_NR_clock_getres:
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case TARGET_NR_clock_getres:
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{
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{
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