tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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semaerr1.c (3045B)

      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 #include "nspr.h"
      7 #include "plgetopt.h"
      8 
      9 #include <stdio.h>
     10 
     11 #ifdef DEBUG
     12 #  define SEM_D "D"
     13 #else
     14 #  define SEM_D
     15 #endif
     16 #ifdef IS_64
     17 #  define SEM_64 "64"
     18 #else
     19 #  define SEM_64
     20 #endif
     21 
     22 #define SEM_NAME1 "/tmp/foo.sem" SEM_D SEM_64
     23 #define SEM_NAME2 "/tmp/bar.sem" SEM_D SEM_64
     24 #define SEM_MODE 0666
     25 
     26 static PRBool debug_mode = PR_FALSE;
     27 
     28 static void Help(void) {
     29  fprintf(stderr, "semaerr1 test program usage:\n");
     30  fprintf(stderr, "\t-d           debug mode         (FALSE)\n");
     31  fprintf(stderr, "\t-h           this message\n");
     32 } /* Help */
     33 
     34 int main(int argc, char** argv) {
     35  PLOptStatus os;
     36  PLOptState* opt = PL_CreateOptState(argc, argv, "dh");
     37  PRSem* sem;
     38 
     39  while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
     40    if (PL_OPT_BAD == os) {
     41      continue;
     42    }
     43    switch (opt->option) {
     44      case 'd': /* debug mode */
     45        debug_mode = PR_TRUE;
     46        break;
     47      case 'h':
     48      default:
     49        Help();
     50        return 2;
     51    }
     52  }
     53  PL_DestroyOptState(opt);
     54 
     55  /*
     56   * PR_SEM_CREATE|PR_SEM_EXCL should be able to
     57   * create a nonexistent semaphore.
     58   */
     59  (void)PR_DeleteSemaphore(SEM_NAME2);
     60  sem = PR_OpenSemaphore(SEM_NAME2, PR_SEM_CREATE | PR_SEM_EXCL, SEM_MODE, 0);
     61  if (sem == NULL) {
     62    fprintf(stderr, "PR_OpenSemaphore failed\n");
     63    exit(1);
     64  }
     65  if (PR_CloseSemaphore(sem) == PR_FAILURE) {
     66    fprintf(stderr, "PR_CloseSemaphore failed\n");
     67    exit(1);
     68  }
     69  if (PR_DeleteSemaphore(SEM_NAME2) == PR_FAILURE) {
     70    fprintf(stderr, "PR_DeleteSemaphore failed\n");
     71    exit(1);
     72  }
     73 
     74  /*
     75   * Opening an existing semaphore with PR_SEM_CREATE|PR_SEM_EXCL.
     76   * should fail with PR_FILE_EXISTS_ERROR.
     77   */
     78  sem = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE | PR_SEM_EXCL, SEM_MODE, 0);
     79  if (sem != NULL) {
     80    fprintf(stderr, "PR_OpenSemaphore should fail but succeeded\n");
     81    exit(1);
     82  }
     83  if (PR_GetError() != PR_FILE_EXISTS_ERROR) {
     84    fprintf(stderr, "Expect %d but got %d\n", PR_FILE_EXISTS_ERROR,
     85            PR_GetError());
     86    exit(1);
     87  }
     88 
     89  /*
     90   * Try again, with just PR_SEM_CREATE.  This should succeed.
     91   */
     92  sem = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE, SEM_MODE, 0);
     93  if (sem == NULL) {
     94    fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n", PR_GetError(),
     95            PR_GetOSError());
     96    exit(1);
     97  }
     98  if (PR_CloseSemaphore(sem) == PR_FAILURE) {
     99    fprintf(stderr, "PR_CloseSemaphore failed\n");
    100    exit(1);
    101  }
    102 
    103  sem = PR_OpenSemaphore(SEM_NAME2, PR_SEM_CREATE | PR_SEM_EXCL, SEM_MODE, 0);
    104  if (sem == NULL) {
    105    fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n", PR_GetError(),
    106            PR_GetOSError());
    107    exit(1);
    108  }
    109  if (PR_CloseSemaphore(sem) == PR_FAILURE) {
    110    fprintf(stderr, "PR_CloseSemaphore failed\n");
    111    exit(1);
    112  }
    113 
    114  printf("PASS\n");
    115  return 0;
    116 }