src/network/socketpair.c

   1 #include <sys/socket.h>
   2 #include <fcntl.h>
   3 #include <errno.h>
   4 #include "syscall.h"
   5
   6 int socketpair(int domain, int type, int protocol, int fd[2])
   7 {
   8         int r = socketcall(socketpair, domain, type, protocol, fd, 0, 0);
   9         if (r<0 && (errno==EINVAL || errno==EPROTONOSUPPORT)
  10             && (type&(SOCK_CLOEXEC|SOCK_NONBLOCK))) {
  11                 r = socketcall(socketpair, domain,
  12                         type & ~(SOCK_CLOEXEC|SOCK_NONBLOCK),
  13                         protocol, fd, 0, 0);
  14                 if (r < 0) return r;
  15                 if (type & SOCK_CLOEXEC) {
  16                         __syscall(SYS_fcntl, fd[0], F_SETFD, FD_CLOEXEC);
  17                         __syscall(SYS_fcntl, fd[1], F_SETFD, FD_CLOEXEC);
  18                 }
  19                 if (type & SOCK_NONBLOCK) {
  20                         __syscall(SYS_fcntl, fd[0], F_SETFL, O_NONBLOCK);
  21                         __syscall(SYS_fcntl, fd[1], F_SETFL, O_NONBLOCK);
  22                 }
  23         }
  24         return r;
  25 }