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} 22