mount_main.c

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

      g_nerrors++;
    }
  else if (errno != expectederror)
    {
      printf("fail_rmdir: ERROR rmdir(%s) failed with errno=%d (expected %d)\n",
             path, errno, expectederror);
      g_nerrors++;
    }
}

/****************************************************************************
 * Name: succeed_rmdir
 ****************************************************************************/

static void succeed_rmdir(const char *path)
{
  int ret;

  printf("succeed_rmdir: Try rmdir(%s)\n", path);

  ret = rmdir(path);
  if (ret != 0)
    {
      printf("succeed_rmdir: ERROR rmdir(%s) failed with errno=%d\n",
             path, errno);
      g_nerrors++;
    }
}

/****************************************************************************
 * Name: fail_unlink
 ****************************************************************************/

static void fail_unlink(const char *path, int expectederror)
{
  int ret;

  /* Try unlink() against a file or directory.  It should fail with expectederror */

  printf("fail_unlink: Try unlink(%s)\n", path);

  ret = unlink(path);
  if (ret == 0)
    {
      printf("fail_unlink: ERROR unlink(%s) succeeded\n", path);
      g_nerrors++;
    }
  else if (errno != expectederror)
    {
      printf("fail_unlink: ERROR unlink(%s) failed with errno=%d (expected %d)\n",
             path, errno, expectederror);
      g_nerrors++;
    }
}

/****************************************************************************
 * Name: succeed_unlink
 ****************************************************************************/

static void succeed_unlink(const char *path)
{
  int ret;

  /* Try unlink() against the test file.  It should succeed. */

  printf("succeed_unlink: Try unlink(%s)\n", path);

  ret = unlink(path);
  if (ret != 0)
    {
      printf("succeed_unlink: ERROR unlink(%s) failed with errno=%d\n",
             path, errno);
      g_nerrors++;
    }
}

/****************************************************************************
 * Name: fail_rename
 ****************************************************************************/

static void fail_rename(const char *oldpath, const char *newpath, int expectederror)
{
  int ret;

  /* Try rename() against a file or directory.  It should fail with expectederror */

  printf("fail_rename: Try rename(%s->%s)\n", oldpath, newpath);

  ret = rename(oldpath, newpath);
  if (ret == 0)
    {
      printf("fail_rename: ERROR rename(%s->%s) succeeded\n",
             oldpath, newpath);
      g_nerrors++;
    }
  else if (errno != expectederror)
    {
      printf("fail_rename: ERROR rename(%s->%s) failed with errno=%d (expected %d)\n",
             oldpath, newpath, errno, expectederror);
      g_nerrors++;
    }
}

/****************************************************************************
 * Name: succeed_rename
 ****************************************************************************/

static void succeed_rename(const char *oldpath, const char *newpath)
{
  int ret;

  printf("succeed_rename: Try rename(%s->%s)\n", oldpath, newpath);

  ret = rename(oldpath, newpath);
  if (ret != 0)
    {
      printf("succeed_rename: ERROR rename(%s->%s) failed with errno=%d\n",
             oldpath, newpath, errno);
      g_nerrors++;
    }
}

/****************************************************************************
 * Name: fail_stat
 ****************************************************************************/

#ifdef TEST_USE_STAT
static void fail_stat(const char *path, int expectederror)
{
  struct stat buf;
  int ret;

  /* Try stat() against a file or directory.  It should fail with expectederror */

  printf("fail_stat: Try stat(%s)\n", path);

  ret = stat(path, &buf);
  if (ret == 0)
    {
      printf("fail_stat: ERROR stat(%s) succeeded\n", path);
      show_stat(path, &buf);
      g_nerrors++;
    }
  else if (errno != expectederror)
    {
      printf("fail_stat: ERROR stat(%s) failed with errno=%d (expected %d)\n",
             path, errno, expectederror);
      g_nerrors++;
    }
}
#else
# define fail_stat(p,e);
#endif

/****************************************************************************
 * Name: succeed_stat
 ****************************************************************************/

#ifdef TEST_USE_STAT
static void succeed_stat(const char *path)
{
  struct stat buf;
  int ret;

  printf("succeed_stat: Try stat(%s)\n", path);

  ret = stat(path, &buf);
  if (ret != 0)
    {
      printf("succeed_stat: ERROR stat(%s) failed with errno=%d\n",
             path, errno);
      g_nerrors++;
    }
  else
    {
      printf("succeed_stat: stat(%s) succeeded\n", path);
      show_stat(path, &buf);
    }
}
#else
#define succeed_stat(p)
#endif

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: user_initialize
 ****************************************************************************/

void user_initialize(void)
{
}

/****************************************************************************
 * Name: user_start
 ****************************************************************************/

int user_start(int argc, char *argv[])
{
  int  ret;

#ifndef CONFIG_EXAMPLES_MOUNT_DEVNAME
  /* Create a RAM disk for the test */

  ret = create_ramdisk();
  if (ret < 0)
    {
      printf("user_start: ERROR failed to create RAM disk\n");
      return 1;
    }
#endif

  /* Mount the test file system (see arch/sim/src/up_deviceimage.c */

  printf("user_start: mounting %s filesystem at target=%s with source=%s\n",
         g_filesystemtype, g_target, g_source);

  ret = mount(g_source, g_target, g_filesystemtype, 0, NULL);
  printf("user_start: mount() returned %d\n", ret);

  if (ret == 0)
    {
      show_statfs(g_mntdir);
      show_statfs(g_target);

#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
      /* Read a test file that is already on the test file system image */

      show_directories("", 0);
      succeed_stat(g_testfile1);
      show_statfs(g_testfile1);
      read_test_file(g_testfile1);
#else
      /* Create the test directory that would have been on the canned filesystem */

      succeed_mkdir(g_testdir1);
      show_directories("", 0);
      succeed_stat(g_testdir1);
      show_statfs(g_testdir1);
#endif

      /* Write a test file into a pre-existing directory on the test file system */

      fail_stat(g_testfile2, ENOENT);
      write_test_file(g_testfile2);
      show_directories("", 0);
      succeed_stat(g_testfile2);
      show_statfs(g_testfile2);

      /* Read the file that we just wrote */

      read_test_file(g_testfile2);

      /* Try rmdir() against a file on the directory.  It should fail with ENOTDIR */
#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
      fail_rmdir(g_testfile1, ENOTDIR);
#endif

      /* Try rmdir() against the test directory.  It should fail with ENOTEMPTY */

      fail_rmdir(g_testdir1, ENOTEMPTY);

      /* Try unlink() against the test directory.  It should fail with EISDIR */

      fail_unlink(g_testdir1, EISDIR);

      /* Try unlink() against the test file1.  It should succeed. */
#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
      succeed_unlink(g_testfile1);
      fail_stat(g_testfile1, ENOENT);
      show_directories("", 0);
#endif

      /* Attempt to open testfile1 should fail with ENOENT */
#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
      fail_read_open(g_testfile1, ENOENT);
#endif
      /* Try rmdir() against the test directory.  It should still fail with ENOTEMPTY */

      fail_rmdir(g_testdir1, ENOTEMPTY);

      /* Try mkdir() against the test file2.  It should fail with EEXIST. */

      fail_mkdir(g_testfile2, EEXIST);

      /* Try unlink() against the test file2.  It should succeed. */

      succeed_unlink(g_testfile2);
      show_directories("", 0);
      fail_stat(g_testfile2, ENOENT);

      /* Try mkdir() against the test dir1.  It should fail with EEXIST. */

      fail_mkdir(g_testdir1, EEXIST);

      /* Try rmdir() against the test directory.  mkdir should now succeed. */

      succeed_rmdir(g_testdir1);
      show_directories("", 0);
      fail_stat(g_testdir1, ENOENT);

      /* Try mkdir() against the test dir2.  It should succeed */

      succeed_mkdir(g_testdir2);
      show_directories("", 0);
      succeed_stat(g_testdir2);
      show_statfs(g_testdir2);

      /* Try mkdir() against the test dir2.  It should fail with EXIST */

      fail_mkdir(g_testdir2, EEXIST);

      /* Write a test file into a new directory on the test file system */

      fail_stat(g_testfile3, ENOENT);
      write_test_file(g_testfile3);
      show_directories("", 0);
      succeed_stat(g_testfile3);
      show_statfs(g_testfile3);

      /* Read the file that we just wrote */

      read_test_file(g_testfile3);

      /* Use mkdir() to create test dir3.  It should succeed */

      fail_stat(g_testdir3, ENOENT);
      succeed_mkdir(g_testdir3);
      show_directories("", 0);
      succeed_stat(g_testdir3);
      show_statfs(g_testdir3);

      /* Try rename() on the root directory. Should fail with EXDEV*/

      fail_rename(g_target, g_testdir4, EXDEV);

      /* Try rename() to an existing directory.  Should fail with EEXIST */

      fail_rename(g_testdir2, g_testdir3, EEXIST);

      /* Try rename() to a non-existing directory.  Should succeed */

      fail_stat(g_testdir4, ENOENT);
      succeed_rename(g_testdir3, g_testdir4);
      show_directories("", 0);
      fail_stat(g_testdir3, ENOENT);
      succeed_stat(g_testdir4);
      show_statfs(g_testdir4);

      /* Try rename() of file.  Should work. */

      fail_stat(g_testfile4, ENOENT);
      succeed_rename(g_testfile3, g_testfile4);
      show_directories("", 0);
      fail_stat(g_testfile3, ENOENT);
      succeed_stat(g_testfile4);
      show_statfs(g_testfile4);

      /* Make sure that we can still read the renamed file */

      read_test_file(g_testfile4);

      /* Unmount the file system */

      printf("user_start: Try unmount(%s)\n", g_target);

      ret = umount(g_target);
      if (ret != 0)
        {
          printf("user_start: ERROR umount() failed, errno %d\n", errno);
          g_nerrors++;
        }

      printf("user_start: %d errors reported\n", g_nerrors);
    }

  fflush(stdout);
  return 0;
}