copyfile_test/systemx.c

   1 //
   2 //      systemx.c
   3 //      copyfile_test
   4 //      Stolen from the test routines from the apfs project.
   5 //
   6 #include <fcntl.h>
   7 #include <libgen.h>
   8 #include <spawn.h>
   9 #include <stdarg.h>
  10 #include <stdbool.h>
  11 #include <unistd.h>
  12 #include <sys/stat.h>
  13
  14 #include "systemx.h"
  15 #include "test_utils.h"
  16
  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, quiet_stderr = false;
  31
  32         while ((*parg = va_arg(ap, char *))) {
  33                 if (*parg == SYSTEMX_QUIET) {
  34                         quiet = true;
  35                 } else if (*parg == SYSTEMX_QUIET_STDERR)
  36                         quiet_stderr = true;
  37                 else
  38                         ++parg;
  39         }
  40
  41         va_end(ap);
  42
  43         posix_spawn_file_actions_t facts, *pfacts = NULL;
  44
  45         if (quiet || quiet_stderr) {
  46                 posix_spawn_file_actions_init(&facts);
  47                 if (quiet)
  48                         posix_spawn_file_actions_addopen(&facts, STDOUT_FILENO, "/dev/null", O_APPEND, 0);
  49                 if (quiet_stderr)
  50                         posix_spawn_file_actions_addopen(&facts, STDERR_FILENO, "/dev/null", O_APPEND, 0);
  51                 pfacts = &facts;
  52         }
  53
  54         pid_t pid;
  55         assert_no_err(errno = posix_spawn(&pid, prog, pfacts, NULL,
  56                                                                           (char * const *)args, NULL));
  57
  58         if (pfacts)
  59                 posix_spawn_file_actions_destroy(pfacts);
  60
  61         int status;
  62         assert(ignore_eintr(waitpid(pid, &status, 0), -1) == pid);
  63
  64         if (WIFEXITED(status))
  65                 return WEXITSTATUS(status);
  66         else
  67                 return -1;
  68 }