src/unistd/pipe2.c

   1 #include <unistd.h>
   2 #include <errno.h>
   3 #include <fcntl.h>
   4 #include "syscall.h"
   5
   6 int pipe2(int fd[2], int flag)
   7 {
   8         if (!flag) return pipe(fd);
   9         int ret = __syscall(SYS_pipe2, fd, flag);
  10         if (ret != -ENOSYS) return __syscall_ret(ret);
  11         ret = pipe(fd);
  12         if (ret) return ret;
  13         if (flag & O_CLOEXEC) {
  14                 __syscall(SYS_fcntl, fd[0], F_SETFD, FD_CLOEXEC);
  15                 __syscall(SYS_fcntl, fd[1], F_SETFD, FD_CLOEXEC);
  16         }
  17         if (flag & O_NONBLOCK) {
  18                 __syscall(SYS_fcntl, fd[0], F_SETFL, O_NONBLOCK);
  19                 __syscall(SYS_fcntl, fd[1], F_SETFL, O_NONBLOCK);
  20         }
  21         return 0;
  22 }