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1 #include <sys/select.h> | 1 #include <sys/select.h> |
2 #include <signal.h> | 2 #include <signal.h> |
3 #include <stdint.h> | 3 #include <stdint.h> |
4 #include <errno.h> | 4 #include <errno.h> |
5 #include "syscall.h" | 5 #include "syscall.h" |
6 #include "libc.h" | 6 #include "libc.h" |
7 | 7 |
8 int select(int n, fd_set *restrict rfds, fd_set *restrict wfds, fd_set *restrict
efds, struct timeval *restrict tv) | 8 int select(int n, |
9 { | 9 fd_set* restrict rfds, |
| 10 fd_set* restrict wfds, |
| 11 fd_set* restrict efds, |
| 12 struct timeval* restrict tv) { |
10 #ifdef SYS_select | 13 #ifdef SYS_select |
11 » return syscall_cp(SYS_select, n, rfds, wfds, efds, tv); | 14 return syscall_cp(SYS_select, n, rfds, wfds, efds, tv); |
12 #else | 15 #else |
13 » syscall_arg_t data[2] = { 0, _NSIG/8 }; | 16 syscall_arg_t data[2] = {0, _NSIG / 8}; |
14 » struct timespec ts; | 17 struct timespec ts; |
15 » if (tv) { | 18 if (tv) { |
16 » » if (tv->tv_sec < 0 || tv->tv_usec < 0) | 19 if (tv->tv_sec < 0 || tv->tv_usec < 0) |
17 » » » return __syscall_ret(-EINVAL); | 20 return __syscall_ret(-EINVAL); |
18 » » time_t extra_secs = tv->tv_usec / 1000000; | 21 time_t extra_secs = tv->tv_usec / 1000000; |
19 » » ts.tv_nsec = tv->tv_usec % 1000000 * 1000; | 22 ts.tv_nsec = tv->tv_usec % 1000000 * 1000; |
20 » » const time_t max_time = (1ULL<<8*sizeof(time_t)-1)-1; | 23 const time_t max_time = (1ULL << 8 * sizeof(time_t) - 1) - 1; |
21 » » ts.tv_sec = extra_secs > max_time - tv->tv_sec ? | 24 ts.tv_sec = |
22 » » » max_time : tv->tv_sec + extra_secs; | 25 extra_secs > max_time - tv->tv_sec ? max_time : tv->tv_sec + extra_secs; |
23 » } | 26 } |
24 » return syscall_cp(SYS_pselect6, n, rfds, wfds, efds, tv ? &ts : 0, data)
; | 27 return syscall_cp(SYS_pselect6, n, rfds, wfds, efds, tv ? &ts : 0, data); |
25 #endif | 28 #endif |
26 } | 29 } |
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