1 #include <sys/select.h>
7 #define IS32BIT(x) !((x)+0x80000000ULL>>32)
8 #define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
10 int select(int n
, fd_set
*restrict rfds
, fd_set
*restrict wfds
, fd_set
*restrict efds
, struct timeval
*restrict tv
)
12 time_t s
= tv
? tv
->tv_sec
: 0;
13 suseconds_t us
= tv
? tv
->tv_usec
: 0;
15 const time_t max_time
= (1ULL<<8*sizeof(time_t)-1)-1;
17 if (s
<0 || us
<0) return __syscall_ret(-EINVAL
);
18 if (us
/1000000 > max_time
- s
) {
28 #ifdef SYS_pselect6_time64
30 if (SYS_pselect6
== SYS_pselect6_time64
|| !IS32BIT(s
))
31 r
= __syscall_cp(SYS_pselect6_time64
, n
, rfds
, wfds
, efds
,
32 tv
? ((long long[]){s
, ns
}) : 0,
33 ((syscall_arg_t
[]){ 0, _NSIG
/8 }));
34 if (SYS_pselect6
== SYS_pselect6_time64
|| r
!=-ENOSYS
)
35 return __syscall_ret(r
);
39 return syscall_cp(SYS_select
, n
, rfds
, wfds
, efds
,
40 tv
? ((long[]){s
, us
}) : 0);
42 return syscall_cp(SYS_pselect6
, n
, rfds
, wfds
, efds
,
43 tv
? ((long[]){s
, ns
}) : 0, ((syscall_arg_t
[]){ 0, _NSIG
/8 }));