27 lines
904 B
C
27 lines
904 B
C
#include <sys/select.h>
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#include <signal.h>
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#include <stdint.h>
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#include <errno.h>
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#include "syscall.h"
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#define IS32BIT(x) !((x)+0x80000000ULL>>32)
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#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
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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)
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{
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syscall_arg_t data[2] = { (uintptr_t)mask, _NSIG/8 };
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time_t s = ts ? ts->tv_sec : 0;
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long ns = ts ? ts->tv_nsec : 0;
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#ifdef SYS_pselect6_time64
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int r = -ENOSYS;
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if (SYS_pselect6 == SYS_pselect6_time64 || !IS32BIT(s))
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r = __syscall_cp(SYS_pselect6_time64, n, rfds, wfds, efds,
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ts ? ((long long[]){s, ns}) : 0, data);
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if (SYS_pselect6 == SYS_pselect6_time64 || r!=-ENOSYS)
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return __syscall_ret(r);
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s = CLAMP(s);
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#endif
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return syscall_cp(SYS_pselect6, n, rfds, wfds, efds,
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ts ? ((long[]){s, ns}) : 0, data);
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}
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