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linux-user: remove host stime() syscall

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stime() has been withdrawn from glibc
(12cbde1dae6f "Use clock_settime to implement stime; withdraw stime.")

Implement the target stime() syscall using host
clock_settime(CLOCK_REALTIME, ...) as it is done internally in glibc.

Tested qemu-ppc/x86_64 with:

	#include <time.h>
	#include <stdio.h>

	int main(void)
	{
		time_t t;
		int ret;

		/* date -u -d"2019-11-12T15:11:00" "+%s" */
		t = 1573571460;
		ret = stime(&t);
		printf("ret %d\n", ret);
		return 0;
	}

        # date; ./stime; date
        Tue Nov 12 14:18:32 UTC 2019
        ret 0
        Tue Nov 12 15:11:00 UTC 2019

Buglink: https://bugs.launchpad.net/qemu/+bug/1852115
Reported-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20191112142556.6335-1-laurent@vivier.eu>
This commit is contained in:
Laurent Vivier 2019-11-12 15:25:56 +01:00
parent c0cb880153
commit 0f1f2d4596
1 changed files with 5 additions and 3 deletions
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8
linux-user/syscall.c
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@ -7764,10 +7764,12 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
#ifdef TARGET_NR_stime /* not on alpha */
case TARGET_NR_stime:
{
time_t host_time;
if (get_user_sal(host_time, arg1))
struct timespec ts;
ts.tv_nsec = 0;
if (get_user_sal(ts.tv_sec, arg1)) {
return -TARGET_EFAULT;
return get_errno(stime(&host_time));
}
return get_errno(clock_settime(CLOCK_REALTIME, &ts));
}
#endif
#ifdef TARGET_NR_alarm /* not on alpha */