granicus.if.org Git - strace/blob - tests/readdir.c

   1 /*
   2  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
   3  * Copyright (c) 2015-2018 The strace developers.
   4  * All rights reserved.
   5  *
   6  * SPDX-License-Identifier: GPL-2.0-or-later
   7  */
   8
   9 #include "tests.h"
  10 #include <asm/unistd.h>
  11
  12 #ifdef __NR_readdir
  13
  14 # include <assert.h>
  15 # include <dirent.h>
  16 # include <fcntl.h>
  17 # include <stdio.h>
  18 # include <string.h>
  19 # include <sys/stat.h>
  20 # include <unistd.h>
  21
  22 static const char fname[] =
  23         "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
  24         "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
  25         "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
  26         "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
  27         "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
  28         "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
  29         "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
  30         "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nZ";
  31 static const char qname[] =
  32         "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
  33         "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
  34         "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
  35         "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
  36         "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
  37         "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
  38         "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
  39         "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nZ";
  40
  41 int
  42 main(void)
  43 {
  44         static const char dname[] = "readdir.test.tmp.dir";
  45         struct {
  46                 unsigned long   d_ino;
  47                 unsigned long   d_off;
  48                 unsigned short  d_reclen;
  49                 char d_name[1024];
  50         } e;
  51         int rc;
  52
  53         assert(!mkdir(dname, 0700));
  54         assert(!chdir(dname));
  55         (void) close(0);
  56         assert(!creat(fname, 0600));
  57         assert(!close(0));
  58         assert(!open(".", O_RDONLY | O_DIRECTORY));
  59         while ((rc = syscall(__NR_readdir, 0, &e, 1))) {
  60                 if (rc < 0)
  61                         perror_msg_and_skip("readdir");
  62                 e.d_name[e.d_reclen] = '\0';
  63                 printf("readdir(0, {d_ino=%lu, d_off=%lu, d_reclen=%u"
  64                        ", d_name=\"%s\"}) = %d\n",
  65                        e.d_ino, e.d_off, e.d_reclen,
  66                        e.d_name[0] == '.' ? e.d_name : qname, rc);
  67         }
  68         printf("readdir(0, %p) = 0\n", &e);
  69         puts("+++ exited with 0 +++");
  70         assert(!unlink(fname));
  71         assert(!chdir(".."));
  72         assert(!rmdir(dname));
  73
  74         return 0;
  75 }
  76
  77 #else
  78
  79 SKIP_MAIN_UNDEFINED("__NR_readdir")
  80
  81 #endif