src/linux/signalfd.c

   1 #include <sys/signalfd.h>
   2 #include <signal.h>
   3 #include <errno.h>
   4 #include <fcntl.h>
   5 #include "syscall.h"
   6
   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 }