1  #include <fcntl.h>
       2  #include <stdio.h>
       3  
       4  static int
       5  do_test (void)
       6  {
       7    int res = 0;
       8  
       9    FILE *fp = popen ("echo hello", "r");
      10    if (fp == NULL)
      11      {
      12        puts ("first popen failed");
      13        res = 1;
      14      }
      15    else
      16      {
      17        int fd = fileno (fp);
      18        if (fcntl (fd, F_GETFD) == FD_CLOEXEC)
      19  	{
      20  	  puts ("first popen(\"r\") set FD_CLOEXEC");
      21  	  res = 1;
      22  	}
      23  
      24        pclose (fp);
      25      }
      26  
      27    fp = popen ("echo hello", "re");
      28    if (fp == NULL)
      29      {
      30        puts ("second popen failed");
      31        res = 1;
      32      }
      33    else
      34      {
      35        int fd = fileno (fp);
      36        if (fcntl (fd, F_GETFD) != FD_CLOEXEC)
      37  	{
      38  	  puts ("second popen(\"r\") did not set FD_CLOEXEC");
      39  	  res = 1;
      40  	}
      41  
      42        pclose (fp);
      43      }
      44  
      45    return res;
      46  }
      47  
      48  #define TEST_FUNCTION do_test ()
      49  #include "../test-skeleton.c"