src/functional/spawn.c

   1 #ifndef _XOPEN_SOURCE
   2 #define _XOPEN_SOURCE 700
   3 #endif
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6 #include <stdio.h>
   7 #include <errno.h>
   8 #include <string.h>
   9 #include <spawn.h>
  10 #include <sys/wait.h>
  11 #include "test.h"
  12
  13 #define TEST(f, x) (void)( \
  14         (r = (f)) == (x) || \
  15         t_error("%s failed, got %d want %d\n", #f, r, x) )
  16
  17 #define TEST_E(f) (void)( \
  18         (errno = 0), (f) || \
  19         t_error("%s failed (errno = %d \"%s\")\n", #f, errno, strerror(errno)) )
  20
  21 int main(void)
  22 {
  23         int r;
  24         char foo[10];
  25         int p[2];
  26         pid_t pid;
  27         int status;
  28         posix_spawn_file_actions_t fa;
  29
  30         TEST_E(!pipe(p));
  31         TEST(posix_spawn_file_actions_init(&fa), 0);
  32         TEST(posix_spawn_file_actions_addclose(&fa, p[0]), 0);
  33         TEST(posix_spawn_file_actions_adddup2(&fa, p[1], 1), 0);
  34         TEST(posix_spawn_file_actions_addclose(&fa, p[1]), 0);
  35         TEST(posix_spawnp(&pid, "echo", &fa, 0, (char *[]){"echo","hello",0}, 0), 0);
  36         close(p[1]);
  37         TEST(waitpid(pid, &status, 0), pid);
  38         TEST(read(p[0], foo, sizeof foo), 6);
  39         close(p[0]);
  40         TEST(posix_spawn_file_actions_destroy(&fa), 0);
  41         return t_status;
  42 }