1 #include <sys/signalfd.h>
2 #include <signal.h>
3 #include <errno.h>
4 #include <fcntl.h>
5 #include "syscall.h"
6
signalfd(int fd,const sigset_t * sigs,int flags)7 int 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