1#include <sys/signalfd.h>
 2#include <signal.h>
 3#include <errno.h>
 4#include <fcntl.h>
 5#include "syscall.h"
 6
 7int signalfd(int fd, const sigset_t *sigs, int flags)
 8{
 9	int ret = __syscall(SYS_signalfd4, fd, sigs, _NSIG/8, flags);
10#ifdef SYS_signalfd
11	if (ret != -ENOSYS) return __syscall_ret(ret);
12	ret = __syscall(SYS_signalfd, fd, sigs, _NSIG/8);
13	if (ret >= 0) {
14		if (flags & SFD_CLOEXEC)
15			__syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC);
16		if (flags & SFD_NONBLOCK)
17			__syscall(SYS_fcntl, ret, F_SETFL, O_NONBLOCK);
18	}
19#endif
20	return __syscall_ret(ret);
21}