github.com/meulengracht/snapd@v0.0.0-20210719210640-8bde69bcc84e/cmd/snap-confine/mount-support-test.c (about)

     1  /*
     2   * Copyright (C) 2015 Canonical Ltd
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License version 3 as
     6   * published by the Free Software Foundation.
     7   *
     8   * This program is distributed in the hope that it will be useful,
     9   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    10   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11   * GNU General Public License for more details.
    12   *
    13   * You should have received a copy of the GNU General Public License
    14   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15   *
    16   */
    17  
    18  #include "mount-support.h"
    19  #include "mount-support.c"
    20  #include "mount-support-nvidia.h"
    21  #include "mount-support-nvidia.c"
    22  
    23  #include <glib.h>
    24  
    25  static void replace_slashes_with_NUL(char *path, size_t len)
    26  {
    27  	for (size_t i = 0; i < len; i++) {
    28  		if (path[i] == '/')
    29  			path[i] = '\0';
    30  	}
    31  }
    32  
    33  static void test_get_nextpath__typical(void)
    34  {
    35  	char path[] = "/some/path";
    36  	size_t offset = 0;
    37  	size_t fulllen = strlen(path);
    38  
    39  	// Prepare path for usage with get_nextpath() by replacing
    40  	// all path separators with the NUL byte.
    41  	replace_slashes_with_NUL(path, fulllen);
    42  
    43  	// Run get_nextpath a few times to see what happens.
    44  	char *result;
    45  	result = get_nextpath(path, &offset, fulllen);
    46  	g_assert_cmpstr(result, ==, "some");
    47  	result = get_nextpath(path, &offset, fulllen);
    48  	g_assert_cmpstr(result, ==, "path");
    49  	result = get_nextpath(path, &offset, fulllen);
    50  	g_assert_cmpstr(result, ==, NULL);
    51  }
    52  
    53  static void test_get_nextpath__weird(void)
    54  {
    55  	char path[] = "..///path";
    56  	size_t offset = 0;
    57  	size_t fulllen = strlen(path);
    58  
    59  	// Prepare path for usage with get_nextpath() by replacing
    60  	// all path separators with the NUL byte.
    61  	replace_slashes_with_NUL(path, fulllen);
    62  
    63  	// Run get_nextpath a few times to see what happens.
    64  	char *result;
    65  	result = get_nextpath(path, &offset, fulllen);
    66  	g_assert_cmpstr(result, ==, "path");
    67  	result = get_nextpath(path, &offset, fulllen);
    68  	g_assert_cmpstr(result, ==, NULL);
    69  }
    70  
    71  static void test_is_subdir(void)
    72  {
    73  	// Sensible exaples are sensible
    74  	g_assert_true(is_subdir("/dir/subdir", "/dir/"));
    75  	g_assert_true(is_subdir("/dir/subdir", "/dir"));
    76  	g_assert_true(is_subdir("/dir/", "/dir"));
    77  	g_assert_true(is_subdir("/dir", "/dir"));
    78  	// Also without leading slash
    79  	g_assert_true(is_subdir("dir/subdir", "dir/"));
    80  	g_assert_true(is_subdir("dir/subdir", "dir"));
    81  	g_assert_true(is_subdir("dir/", "dir"));
    82  	g_assert_true(is_subdir("dir", "dir"));
    83  	// Some more ideas
    84  	g_assert_true(is_subdir("//", "/"));
    85  	g_assert_true(is_subdir("/", "/"));
    86  	g_assert_true(is_subdir("", ""));
    87  	// but this is not true
    88  	g_assert_false(is_subdir("/", "/dir"));
    89  	g_assert_false(is_subdir("/rid", "/dir"));
    90  	g_assert_false(is_subdir("/different/dir", "/dir"));
    91  	g_assert_false(is_subdir("/", ""));
    92  }
    93  
    94  static void __attribute__((constructor)) init(void)
    95  {
    96  	g_test_add_func("/mount/get_nextpath/typical",
    97  			test_get_nextpath__typical);
    98  	g_test_add_func("/mount/get_nextpath/weird", test_get_nextpath__weird);
    99  	g_test_add_func("/mount/is_subdir", test_is_subdir);
   100  }