diff options
Diffstat (limited to 'src/select/pselect.c')
| -rw-r--r-- | src/select/pselect.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/select/pselect.c b/src/select/pselect.c index 762af37f..54cfb291 100644 --- a/src/select/pselect.c +++ b/src/select/pselect.c @@ -1,12 +1,26 @@ #include <sys/select.h> #include <signal.h> #include <stdint.h> +#include <errno.h> #include "syscall.h" +#define IS32BIT(x) !((x)+0x80000000ULL>>32) +#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63)) + 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) { syscall_arg_t data[2] = { (uintptr_t)mask, _NSIG/8 }; - struct timespec ts_tmp; - if (ts) ts_tmp = *ts; - return syscall_cp(SYS_pselect6, n, rfds, wfds, efds, ts ? &ts_tmp : 0, data); + time_t s = ts ? ts->tv_sec : 0; + long ns = ts ? ts->tv_nsec : 0; +#ifdef SYS_pselect6_time64 + int r = -ENOSYS; + if (SYS_pselect6 == SYS_pselect6_time64 || !IS32BIT(s)) + r = __syscall_cp(SYS_pselect6_time64, n, rfds, wfds, efds, + ts ? ((long long[]){s, ns}) : 0, data); + if (SYS_pselect6 == SYS_pselect6_time64 || r!=-ENOSYS) + return __syscall_ret(r); + s = CLAMP(s); +#endif + return syscall_cp(SYS_pselect6, n, rfds, wfds, efds, + ts ? ((long[]){s, ns}) : 0, data); } |