27 lines
753 B
C
27 lines
753 B
C
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#define _GNU_SOURCE
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#include <poll.h>
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#include <signal.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 ppoll(struct pollfd *fds, nfds_t n, const struct timespec *to, const sigset_t *mask)
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{
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time_t s = to ? to->tv_sec : 0;
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long ns = to ? to->tv_nsec : 0;
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#ifdef SYS_ppoll_time64
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int r = -ENOSYS;
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if (SYS_ppoll == SYS_ppoll_time64 || !IS32BIT(s))
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r = __syscall_cp(SYS_ppoll_time64, fds, n,
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to ? ((long long[]){s, ns}) : 0,
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mask, _NSIG/8);
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if (SYS_ppoll == SYS_ppoll_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_ppoll, fds, n,
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to ? ((long[]){s, ns}) : 0, mask, _NSIG/8);
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}
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