1 #include <sys/select.h>
2 #include <signal.h>
3 #include <stdint.h>
4 #include <errno.h>
5 #include <unsupported_api.h>
6 #include "syscall.h"
7
8 #define IS32BIT(x) !((x)+0x80000000ULL>>32)
9 #define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
10
pselect(int n,fd_set * restrict rfds,fd_set * restrict wfds,fd_set * restrict efds,const struct timespec * restrict ts,const sigset_t * restrict mask)11 int pselect(int n, fd_set *restrict rfds, fd_set *restrict wfds, fd_set *restrict efds, const struct timespec *restrict ts, const sigset_t *restrict mask)
12 {
13 syscall_arg_t data[2] = { (uintptr_t)mask, _NSIG/8 };
14 time_t s = ts ? ts->tv_sec : 0;
15 long ns = ts ? ts->tv_nsec : 0;
16 unsupported_api(__FUNCTION__);
17 #ifdef SYS_pselect6_time64
18 int r = -ENOSYS;
19 if (SYS_pselect6 == SYS_pselect6_time64 || !IS32BIT(s))
20 r = __syscall_cp(SYS_pselect6_time64, n, rfds, wfds, efds,
21 ts ? ((long long[]){s, ns}) : 0, data);
22 if (SYS_pselect6 == SYS_pselect6_time64 || r!=-ENOSYS)
23 return __syscall_ret(r);
24 s = CLAMP(s);
25 #endif
26 return syscall_cp(SYS_pselect6, n, rfds, wfds, efds,
27 ts ? ((long[]){s, ns}) : 0, data);
28 }
29