33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
#include <signal.h>
|
|
#include <errno.h>
|
|
#include "syscall.h"
|
|
|
|
#define IS32BIT(x) !((x)+0x80000000ULL>>32)
|
|
#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
|
|
|
|
static int do_sigtimedwait(const sigset_t *restrict mask, siginfo_t *restrict si, const struct timespec *restrict ts)
|
|
{
|
|
#ifdef SYS_rt_sigtimedwait_time64
|
|
time_t s = ts ? ts->tv_sec : 0;
|
|
long ns = ts ? ts->tv_nsec : 0;
|
|
int r = -ENOSYS;
|
|
if (SYS_rt_sigtimedwait == SYS_rt_sigtimedwait_time64 || !IS32BIT(s))
|
|
r = __syscall_cp(SYS_rt_sigtimedwait_time64, mask, si,
|
|
ts ? ((long long[]){s, ns}) : 0, _NSIG/8);
|
|
if (SYS_rt_sigtimedwait == SYS_rt_sigtimedwait_time64 || r!=-ENOSYS)
|
|
return r;
|
|
return __syscall_cp(SYS_rt_sigtimedwait, mask, si,
|
|
ts ? ((long[]){CLAMP(s), ns}) : 0, _NSIG/8);;
|
|
#else
|
|
return __syscall_cp(SYS_rt_sigtimedwait, mask, si, ts, _NSIG/8);
|
|
#endif
|
|
}
|
|
|
|
int sigtimedwait(const sigset_t *restrict mask, siginfo_t *restrict si, const struct timespec *restrict timeout)
|
|
{
|
|
int ret;
|
|
do ret = do_sigtimedwait(mask, si, timeout);
|
|
while (ret==-EINTR);
|
|
return __syscall_ret(ret);
|
|
}
|