tests/systemx.c

   1 //
   2 //  systemx.c
   3 //  hfs
   4 //
   5 //  Created by Chris Suter on 8/12/15.
   6 //
   7 //
   8
   9 #include <stdarg.h>
  10 #include <libgen.h>
  11 #include <spawn.h>
  12 #include <fcntl.h>
  13 #include <unistd.h>
  14
  15 #include "systemx.h"
  16 #include "test-utils.h"
  17
  18 int __attribute__((sentinel)) systemx(const char *prog, ...)
  19 {
  20         const char *args[64];
  21
  22         va_list ap;
  23
  24         const char **parg = args;
  25
  26         *parg++ = basename((char *)prog);
  27
  28         va_start(ap, prog);
  29
  30         bool quiet = false;
  31
  32         while ((*parg = va_arg(ap, char *))) {
  33                 if (*parg == SYSTEMX_QUIET) {
  34                         quiet = true;
  35                 } else
  36                         ++parg;
  37         }
  38
  39         va_end(ap);
  40
  41         posix_spawn_file_actions_t facts, *pfacts = NULL;
  42
  43         if (quiet) {
  44                 posix_spawn_file_actions_init(&facts);
  45                 posix_spawn_file_actions_addopen(&facts, STDOUT_FILENO, "/dev/null", O_APPEND, 0);
  46                 pfacts = &facts;
  47         }
  48
  49         pid_t pid;
  50         assert_no_err(posix_spawn(&pid, prog, pfacts, NULL, (char * const *)args, NULL));
  51
  52         if (pfacts)
  53                 posix_spawn_file_actions_destroy(pfacts);
  54
  55         int status;
  56         assert(ignore_eintr(waitpid(pid, &status, 0), -1) == pid);
  57
  58         if (WIFEXITED(status))
  59                 return WEXITSTATUS(status);
  60         else
  61                 return -1;
  62 }