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