Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1308 insertions, 0 deletions

diff --git a/src/test/test-path-util.c b/src/test/test-path-util.c
new file mode 100644
index 0000000..f5a4256
--- /dev/null
+++ b/src/test/test-path-util.c
@@ -0,0 +1,1308 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "exec-util.h"
+#include "fd-util.h"
+#include "fs-util.h"
+#include "macro.h"
+#include "path-util.h"
+#include "process-util.h"
+#include "rm-rf.h"
+#include "stat-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+
+TEST(print_paths) {
+        log_info("DEFAULT_PATH=%s", DEFAULT_PATH);
+        log_info("DEFAULT_USER_PATH=%s", DEFAULT_USER_PATH);
+}
+
+TEST(path) {
+        assert_se(path_is_absolute("/"));
+        assert_se(!path_is_absolute("./"));
+
+        assert_se(streq(basename("./aa/bb/../file.da."), "file.da."));
+        assert_se(streq(basename("/aa///.file"), ".file"));
+        assert_se(streq(basename("/aa///file..."), "file..."));
+        assert_se(streq(basename("file.../"), ""));
+
+        assert_se(PATH_IN_SET("/bin", "/", "/bin", "/foo"));
+        assert_se(PATH_IN_SET("/bin", "/bin"));
+        assert_se(PATH_IN_SET("/bin", "/foo/bar", "/bin"));
+        assert_se(PATH_IN_SET("/", "/", "/", "/foo/bar"));
+        assert_se(!PATH_IN_SET("/", "/abc", "/def"));
+
+        assert_se(path_equal_ptr(NULL, NULL));
+        assert_se(path_equal_ptr("/a", "/a"));
+        assert_se(!path_equal_ptr("/a", "/b"));
+        assert_se(!path_equal_ptr("/a", NULL));
+        assert_se(!path_equal_ptr(NULL, "/a"));
+}
+
+TEST(is_path) {
+        assert_se(!is_path("foo"));
+        assert_se(!is_path("dos.ext"));
+        assert_se( is_path("/dir"));
+        assert_se( is_path("a/b"));
+        assert_se( is_path("a/b.ext"));
+
+        assert_se(!is_path("."));
+        assert_se(!is_path(""));
+        assert_se(!is_path(".."));
+
+        assert_se( is_path("/dev"));
+        assert_se( is_path("/./dev"));
+        assert_se( is_path("/./dev/."));
+        assert_se( is_path("/./dev."));
+        assert_se( is_path("//dev"));
+        assert_se( is_path("///dev"));
+        assert_se( is_path("/dev/"));
+        assert_se( is_path("///dev/"));
+        assert_se( is_path("/./dev/"));
+        assert_se( is_path("/../dev/"));
+        assert_se( is_path("/dev/sda"));
+        assert_se( is_path("/dev/sda5"));
+        assert_se( is_path("/dev/sda5b3"));
+        assert_se( is_path("/dev/sda5b3/idontexit"));
+        assert_se( is_path("/../dev/sda"));
+        assert_se( is_path("/../../dev/sda5"));
+        assert_se( is_path("/../../../dev/sda5b3"));
+        assert_se( is_path("/.././.././dev/sda5b3/idontexit"));
+        assert_se( is_path("/sys"));
+        assert_se( is_path("/sys/"));
+        assert_se( is_path("/./sys"));
+        assert_se( is_path("/./sys/."));
+        assert_se( is_path("/./sys."));
+        assert_se( is_path("/sys/what"));
+        assert_se( is_path("/sys/something/.."));
+        assert_se( is_path("/sys/something/../"));
+        assert_se( is_path("/sys////"));
+        assert_se( is_path("/sys////."));
+        assert_se( is_path("/sys/.."));
+        assert_se( is_path("/sys/../"));
+        assert_se( is_path("/usr/../dev/sda"));
+}
+
+TEST(is_device_path) {
+        assert_se(!is_device_path("foo"));
+        assert_se(!is_device_path("dos.ext"));
+        assert_se(!is_device_path("/dir"));
+        assert_se(!is_device_path("a/b"));
+        assert_se(!is_device_path("a/b.ext"));
+
+        assert_se(!is_device_path("."));
+        assert_se(!is_device_path(""));
+        assert_se(!is_device_path(".."));
+
+        assert_se(!is_device_path("/dev"));
+        assert_se(!is_device_path("/./dev"));
+        assert_se(!is_device_path("/./dev/."));
+        assert_se(!is_device_path("/./dev."));
+        assert_se( is_device_path("/./dev/foo"));
+        assert_se( is_device_path("/./dev/./foo"));
+        assert_se(!is_device_path("/./dev./foo"));
+        assert_se(!is_device_path("//dev"));
+        assert_se(!is_device_path("///dev"));
+        assert_se(!is_device_path("/dev/"));
+        assert_se(!is_device_path("///dev/"));
+        assert_se(!is_device_path("/./dev/"));
+        assert_se(!is_device_path("/../dev/"));
+        assert_se( is_device_path("/dev/sda"));
+        assert_se( is_device_path("/dev/sda5"));
+        assert_se( is_device_path("/dev/sda5b3"));
+        assert_se( is_device_path("/dev/sda5b3/idontexit"));
+        assert_se(!is_device_path("/../dev/sda"));
+        assert_se(!is_device_path("/../../dev/sda5"));
+        assert_se(!is_device_path("/../../../dev/sda5b3"));
+        assert_se(!is_device_path("/.././.././dev/sda5b3/idontexit"));
+        assert_se(!is_device_path("/sys"));
+        assert_se(!is_device_path("/sys/"));
+        assert_se(!is_device_path("/./sys"));
+        assert_se(!is_device_path("/./sys/."));
+        assert_se(!is_device_path("/./sys."));
+        assert_se( is_device_path("/./sys/foo"));
+        assert_se( is_device_path("/./sys/./foo"));
+        assert_se(!is_device_path("/./sys./foo"));
+        assert_se( is_device_path("/sys/what"));
+        assert_se( is_device_path("/sys/something/.."));
+        assert_se( is_device_path("/sys/something/../"));
+        assert_se(!is_device_path("/sys////"));
+        assert_se(!is_device_path("/sys////."));
+        assert_se( is_device_path("/sys/.."));
+        assert_se( is_device_path("/sys/../"));
+        assert_se(!is_device_path("/usr/../dev/sda"));
+}
+
+static void test_path_simplify_one(const char *in, const char *out, PathSimplifyFlags flags) {
+        char *p;
+
+        p = strdupa_safe(in);
+        path_simplify_full(p, flags);
+        log_debug("/* test_path_simplify(%s) → %s (expected: %s) */", in, p, out);
+        assert_se(streq(p, out));
+}
+
+TEST(path_simplify) {
+        _cleanup_free_ char *hoge = NULL, *hoge_out = NULL;
+        char foo[NAME_MAX * 2];
+
+        test_path_simplify_one("", "", 0);
+        test_path_simplify_one("aaa/bbb////ccc", "aaa/bbb/ccc", 0);
+        test_path_simplify_one("//aaa/.////ccc", "/aaa/ccc", 0);
+        test_path_simplify_one("///", "/", 0);
+        test_path_simplify_one("///", "/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("///.//", "/", 0);
+        test_path_simplify_one("///.//.///", "/", 0);
+        test_path_simplify_one("////.././///../.", "/", 0);
+        test_path_simplify_one(".", ".", 0);
+        test_path_simplify_one("./", ".", 0);
+        test_path_simplify_one("./", "./", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one(".///.//./.", ".", 0);
+        test_path_simplify_one(".///.//././/", ".", 0);
+        test_path_simplify_one("//./aaa///.//./.bbb/..///c.//d.dd///..eeee/.",
+                               "/aaa/.bbb/../c./d.dd/..eeee", 0);
+        test_path_simplify_one("//./aaa///.//./.bbb/..///c.//d.dd///..eeee/..",
+                               "/aaa/.bbb/../c./d.dd/..eeee/..", 0);
+        test_path_simplify_one(".//./aaa///.//./.bbb/..///c.//d.dd///..eeee/..",
+                               "aaa/.bbb/../c./d.dd/..eeee/..", 0);
+        test_path_simplify_one("..//./aaa///.//./.bbb/..///c.//d.dd///..eeee/..",
+                               "../aaa/.bbb/../c./d.dd/..eeee/..", 0);
+        test_path_simplify_one("abc///", "abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+
+        test_path_simplify_one("/../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../abc///", "/abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../abc///", "/abc", 0);
+        test_path_simplify_one("/../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../abc///..", "/abc/..", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../abc///../", "/abc/../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../abc///../", "/abc/..", 0);
+
+        test_path_simplify_one("/../../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../../abc///", "/abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../../abc///", "/abc", 0);
+        test_path_simplify_one("/../../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../../abc///../..", "/abc/../..", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../../abc///../../", "/abc/../../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/../../abc///../../", "/abc/../..", 0);
+
+        test_path_simplify_one("/.././../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.././../abc///", "/abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.././../abc///", "/abc", 0);
+        test_path_simplify_one("/.././../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.././../abc///../..", "/abc/../..", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.././../abc///../../", "/abc/../../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.././../abc///../../", "/abc/../..", 0);
+
+        test_path_simplify_one("/./.././../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/./.././../abc///", "/abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/./.././../abc///", "/abc", 0);
+        test_path_simplify_one("/./.././../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/./.././../abc///../..", "/abc/../..", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/./.././../abc///../../", "/abc/../../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/./.././../abc///../../", "/abc/../..", 0);
+
+        test_path_simplify_one("/.../abc", "/.../abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.../abc///", "/.../abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.../abc///", "/.../abc", 0);
+        test_path_simplify_one("/.../abc", "/.../abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.../abc///...", "/.../abc/...", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.../abc///.../", "/.../abc/.../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
+        test_path_simplify_one("/.../abc///.../", "/.../abc/...", 0);
+
+        memset(foo, 'a', sizeof(foo) -1);
+        char_array_0(foo);
+
+        test_path_simplify_one(foo, foo, 0);
+
+        hoge = strjoin("/", foo);
+        assert_se(hoge);
+        test_path_simplify_one(hoge, hoge, 0);
+        hoge = mfree(hoge);
+
+        hoge = strjoin("a////.//././//./b///././/./c/////././//./", foo, "//.//////d/e/.//f/");
+        assert_se(hoge);
+
+        hoge_out = strjoin("a/b/c/", foo, "//.//////d/e/.//f/");
+        assert_se(hoge_out);
+
+        test_path_simplify_one(hoge, hoge_out, 0);
+}
+
+static void test_path_compare_one(const char *a, const char *b, int expected) {
+        int r;
+
+        assert_se(path_compare(a, a) == 0);
+        assert_se(path_compare(b, b) == 0);
+
+        r = path_compare(a, b);
+        assert_se((r > 0) == (expected > 0) && (r < 0) == (expected < 0));
+        r = path_compare(b, a);
+        assert_se((r < 0) == (expected > 0) && (r > 0) == (expected < 0));
+
+        assert_se(path_equal(a, a) == 1);
+        assert_se(path_equal(b, b) == 1);
+        assert_se(path_equal(a, b) == (expected == 0));
+        assert_se(path_equal(b, a) == (expected == 0));
+}
+
+TEST(path_compare) {
+        test_path_compare_one("/goo", "/goo", 0);
+        test_path_compare_one("/goo", "/goo", 0);
+        test_path_compare_one("//goo", "/goo", 0);
+        test_path_compare_one("//goo/////", "/goo", 0);
+        test_path_compare_one("goo/////", "goo", 0);
+        test_path_compare_one("/goo/boo", "/goo//boo", 0);
+        test_path_compare_one("//goo/boo", "/goo/boo//", 0);
+        test_path_compare_one("//goo/././//./boo//././//", "/goo/boo//.", 0);
+        test_path_compare_one("/.", "//.///", 0);
+        test_path_compare_one("/x", "x/", 1);
+        test_path_compare_one("x/", "/", -1);
+        test_path_compare_one("/x/./y", "x/y", 1);
+        test_path_compare_one("/x/./y", "/x/y", 0);
+        test_path_compare_one("/x/./././y", "/x/y/././.", 0);
+        test_path_compare_one("./x/./././y", "./x/y/././.", 0);
+        test_path_compare_one(".", "./.", 0);
+        test_path_compare_one(".", "././.", 0);
+        test_path_compare_one("./..", ".", 1);
+        test_path_compare_one("x/.y", "x/y", -1);
+        test_path_compare_one("foo", "/foo", -1);
+        test_path_compare_one("/foo", "/foo/bar", -1);
+        test_path_compare_one("/foo/aaa", "/foo/b", -1);
+        test_path_compare_one("/foo/aaa", "/foo/b/a", -1);
+        test_path_compare_one("/foo/a", "/foo/aaa", -1);
+        test_path_compare_one("/foo/a/b", "/foo/aaa", -1);
+}
+
+static void test_path_compare_filename_one(const char *a, const char *b, int expected) {
+        int r;
+
+        assert_se(path_compare_filename(a, a) == 0);
+        assert_se(path_compare_filename(b, b) == 0);
+
+        r = path_compare_filename(a, b);
+        assert_se((r > 0) == (expected > 0) && (r < 0) == (expected < 0));
+        r = path_compare_filename(b, a);
+        assert_se((r < 0) == (expected > 0) && (r > 0) == (expected < 0));
+
+        assert_se(path_equal_filename(a, a) == 1);
+        assert_se(path_equal_filename(b, b) == 1);
+        assert_se(path_equal_filename(a, b) == (expected == 0));
+        assert_se(path_equal_filename(b, a) == (expected == 0));
+}
+
+TEST(path_compare_filename) {
+        test_path_compare_filename_one("/goo", "/goo", 0);
+        test_path_compare_filename_one("/goo", "/goo", 0);
+        test_path_compare_filename_one("//goo", "/goo", 0);
+        test_path_compare_filename_one("//goo/////", "/goo", 0);
+        test_path_compare_filename_one("goo/////", "goo", 0);
+        test_path_compare_filename_one("/goo/boo", "/goo//boo", 0);
+        test_path_compare_filename_one("//goo/boo", "/goo/boo//", 0);
+        test_path_compare_filename_one("//goo/././//./boo//././//", "/goo/boo//.", 0);
+        test_path_compare_filename_one("/.", "//.///", -1);
+        test_path_compare_filename_one("/x", "x/", 0);
+        test_path_compare_filename_one("x/", "/", 1);
+        test_path_compare_filename_one("/x/./y", "x/y", 0);
+        test_path_compare_filename_one("/x/./y", "/x/y", 0);
+        test_path_compare_filename_one("/x/./././y", "/x/y/././.", 0);
+        test_path_compare_filename_one("./x/./././y", "./x/y/././.", 0);
+        test_path_compare_filename_one(".", "./.", -1);
+        test_path_compare_filename_one(".", "././.", -1);
+        test_path_compare_filename_one("./..", ".", 1);
+        test_path_compare_filename_one("x/.y", "x/y", -1);
+        test_path_compare_filename_one("foo", "/foo", 0);
+        test_path_compare_filename_one("/foo", "/foo/bar", 1);
+        test_path_compare_filename_one("/foo/aaa", "/foo/b", -1);
+        test_path_compare_filename_one("/foo/aaa", "/foo/b/a", 1);
+        test_path_compare_filename_one("/foo/a", "/foo/aaa", -1);
+        test_path_compare_filename_one("/foo/a/b", "/foo/aaa", 1);
+        test_path_compare_filename_one("/a/c", "/b/c", 0);
+        test_path_compare_filename_one("/a", "/a", 0);
+        test_path_compare_filename_one("/a/b", "/a/c", -1);
+        test_path_compare_filename_one("/b", "/c", -1);
+}
+
+TEST(path_equal_root) {
+        /* Nail down the details of how path_equal("/", ...) works. */
+
+        assert_se(path_equal("/", "/"));
+        assert_se(path_equal("/", "//"));
+
+        assert_se(path_equal("/", "/./"));
+        assert_se(!path_equal("/", "/../"));
+
+        assert_se(!path_equal("/", "/.../"));
+
+        /* Make sure that files_same works as expected. */
+
+        assert_se(inode_same("/", "/", 0) > 0);
+        assert_se(inode_same("/", "/", AT_SYMLINK_NOFOLLOW) > 0);
+        assert_se(inode_same("/", "//", 0) > 0);
+        assert_se(inode_same("/", "//", AT_SYMLINK_NOFOLLOW) > 0);
+
+        assert_se(inode_same("/", "/./", 0) > 0);
+        assert_se(inode_same("/", "/./", AT_SYMLINK_NOFOLLOW) > 0);
+        assert_se(inode_same("/", "/../", 0) > 0);
+        assert_se(inode_same("/", "/../", AT_SYMLINK_NOFOLLOW) > 0);
+
+        assert_se(inode_same("/", "/.../", 0) == -ENOENT);
+        assert_se(inode_same("/", "/.../", AT_SYMLINK_NOFOLLOW) == -ENOENT);
+
+        /* The same for path_equal_or_files_same. */
+
+        assert_se(path_equal_or_inode_same("/", "/", 0));
+        assert_se(path_equal_or_inode_same("/", "/", AT_SYMLINK_NOFOLLOW));
+        assert_se(path_equal_or_inode_same("/", "//", 0));
+        assert_se(path_equal_or_inode_same("/", "//", AT_SYMLINK_NOFOLLOW));
+
+        assert_se(path_equal_or_inode_same("/", "/./", 0));
+        assert_se(path_equal_or_inode_same("/", "/./", AT_SYMLINK_NOFOLLOW));
+        assert_se(path_equal_or_inode_same("/", "/../", 0));
+        assert_se(path_equal_or_inode_same("/", "/../", AT_SYMLINK_NOFOLLOW));
+
+        assert_se(!path_equal_or_inode_same("/", "/.../", 0));
+        assert_se(!path_equal_or_inode_same("/", "/.../", AT_SYMLINK_NOFOLLOW));
+}
+
+TEST(find_executable_full) {
+        char *p;
+        char* test_file_name;
+        _cleanup_close_ int fd = -EBADF;
+        char fn[] = "/tmp/test-XXXXXX";
+
+        assert_se(find_executable_full("sh", NULL, NULL, true, &p, NULL) == 0);
+        puts(p);
+        assert_se(streq(basename(p), "sh"));
+        free(p);
+
+        assert_se(find_executable_full("sh", NULL, NULL, false, &p, NULL) == 0);
+        puts(p);
+        assert_se(streq(basename(p), "sh"));
+        free(p);
+
+        _cleanup_free_ char *oldpath = NULL;
+        p = getenv("PATH");
+        if (p)
+                assert_se(oldpath = strdup(p));
+
+        assert_se(unsetenv("PATH") == 0);
+
+        assert_se(find_executable_full("sh", NULL, NULL, true, &p, NULL) == 0);
+        puts(p);
+        assert_se(streq(basename(p), "sh"));
+        free(p);
+
+        assert_se(find_executable_full("sh", NULL, NULL, false, &p, NULL) == 0);
+        puts(p);
+        assert_se(streq(basename(p), "sh"));
+        free(p);
+
+        if (oldpath)
+                assert_se(setenv("PATH", oldpath, true) >= 0);
+
+        assert_se((fd = mkostemp_safe(fn)) >= 0);
+        assert_se(fchmod(fd, 0755) >= 0);
+
+        test_file_name = basename(fn);
+
+        assert_se(find_executable_full(test_file_name, NULL, STRV_MAKE("/doesnotexist", "/tmp", "/bin"), false, &p, NULL) == 0);
+        puts(p);
+        assert_se(streq(p, fn));
+        free(p);
+
+        (void) unlink(fn);
+        assert_se(find_executable_full(test_file_name, NULL, STRV_MAKE("/doesnotexist", "/tmp", "/bin"), false, &p, NULL) == -ENOENT);
+}
+
+TEST(find_executable) {
+        char *p;
+
+        assert_se(find_executable("/bin/sh", &p) == 0);
+        puts(p);
+        assert_se(path_equal(p, "/bin/sh"));
+        free(p);
+
+        assert_se(find_executable(saved_argv[0], &p) == 0);
+        puts(p);
+        assert_se(endswith(p, "/test-path-util"));
+        assert_se(path_is_absolute(p));
+        free(p);
+
+        assert_se(find_executable("sh", &p) == 0);
+        puts(p);
+        assert_se(endswith(p, "/sh"));
+        assert_se(path_is_absolute(p));
+        free(p);
+
+        assert_se(find_executable("/bin/touch", &p) == 0);
+        assert_se(streq(p, "/bin/touch"));
+        free(p);
+
+        assert_se(find_executable("touch", &p) == 0);
+        assert_se(path_is_absolute(p));
+        assert_se(streq(basename(p), "touch"));
+        free(p);
+
+        assert_se(find_executable("xxxx-xxxx", &p) == -ENOENT);
+        assert_se(find_executable("/some/dir/xxxx-xxxx", &p) == -ENOENT);
+        assert_se(find_executable("/proc/filesystems", &p) == -EACCES);
+}
+
+static void test_find_executable_exec_one(const char *path) {
+        _cleanup_free_ char *t = NULL;
+        _cleanup_close_ int fd = -EBADF;
+        pid_t pid;
+        int r;
+
+        r = find_executable_full(path, NULL, NULL, false, &t, &fd);
+
+        log_info_errno(r, "%s: %s → %s: %d/%m", __func__, path, t ?: "-", fd);
+
+        assert_se(fd > STDERR_FILENO);
+        assert_se(path_is_absolute(t));
+        if (path_is_absolute(path))
+                assert_se(streq(t, path));
+
+        pid = fork();
+        assert_se(pid >= 0);
+        if (pid == 0) {
+                r = fexecve_or_execve(fd, t, STRV_MAKE(t, "--version"), STRV_MAKE(NULL));
+                log_error_errno(r, "[f]execve: %m");
+                _exit(EXIT_FAILURE);
+        }
+
+        assert_se(wait_for_terminate_and_check(t, pid, WAIT_LOG) == 0);
+}
+
+TEST(find_executable_exec) {
+        test_find_executable_exec_one("touch");
+        test_find_executable_exec_one("/bin/touch");
+
+        _cleanup_free_ char *script = NULL;
+        assert_se(get_testdata_dir("test-path-util/script.sh", &script) >= 0);
+        test_find_executable_exec_one(script);
+}
+
+TEST(prefixes) {
+        static const char* const values[] = {
+                "/a/b/c/d",
+                "/a/b/c",
+                "/a/b",
+                "/a",
+                "",
+                NULL
+        };
+        unsigned i;
+        char s[PATH_MAX];
+        bool b;
+
+        i = 0;
+        PATH_FOREACH_PREFIX_MORE(s, "/a/b/c/d") {
+                log_error("---%s---", s);
+                assert_se(streq(s, values[i++]));
+        }
+        assert_se(values[i] == NULL);
+
+        i = 1;
+        PATH_FOREACH_PREFIX(s, "/a/b/c/d") {
+                log_error("---%s---", s);
+                assert_se(streq(s, values[i++]));
+        }
+        assert_se(values[i] == NULL);
+
+        i = 0;
+        PATH_FOREACH_PREFIX_MORE(s, "////a////b////c///d///////")
+                assert_se(streq(s, values[i++]));
+        assert_se(values[i] == NULL);
+
+        i = 1;
+        PATH_FOREACH_PREFIX(s, "////a////b////c///d///////")
+                assert_se(streq(s, values[i++]));
+        assert_se(values[i] == NULL);
+
+        PATH_FOREACH_PREFIX(s, "////")
+                assert_not_reached();
+
+        b = false;
+        PATH_FOREACH_PREFIX_MORE(s, "////") {
+                assert_se(!b);
+                assert_se(streq(s, ""));
+                b = true;
+        }
+        assert_se(b);
+
+        PATH_FOREACH_PREFIX(s, "")
+                assert_not_reached();
+
+        b = false;
+        PATH_FOREACH_PREFIX_MORE(s, "") {
+                assert_se(!b);
+                assert_se(streq(s, ""));
+                b = true;
+        }
+}
+
+TEST(path_join) {
+#define test_join(expected, ...) {        \
+                _cleanup_free_ char *z = NULL;   \
+                z = path_join(__VA_ARGS__); \
+                log_debug("got \"%s\", expected \"%s\"", z, expected); \
+                assert_se(streq(z, expected));   \
+        }
+
+        test_join("/root/a/b/c", "/root", "/a/b", "/c");
+        test_join("/root/a/b/c", "/root", "a/b", "c");
+        test_join("/root/a/b/c", "/root", "/a/b", "c");
+        test_join("/root/c",     "/root", "/", "c");
+        test_join("/root/",      "/root", "/", NULL);
+
+        test_join("/a/b/c", "", "/a/b", "/c");
+        test_join("a/b/c",  "", "a/b", "c");
+        test_join("/a/b/c", "", "/a/b", "c");
+        test_join("/c",     "", "/", "c");
+        test_join("/",      "", "/", NULL);
+
+        test_join("/a/b/c", NULL, "/a/b", "/c");
+        test_join("a/b/c",  NULL, "a/b", "c");
+        test_join("/a/b/c", NULL, "/a/b", "c");
+        test_join("/c",     NULL, "/", "c");
+        test_join("/",      NULL, "/", NULL);
+
+        test_join("", "", NULL);
+        test_join("", NULL, "");
+        test_join("", NULL, NULL);
+
+        test_join("foo/bar", "foo", "bar");
+        test_join("foo/bar", "", "foo", "bar");
+        test_join("foo/bar", NULL, "foo", NULL, "bar");
+        test_join("foo/bar", "", "foo", "", "bar", "");
+        test_join("foo/bar", "", "", "", "", "foo", "", "", "", "bar", "", "", "");
+
+        test_join("//foo///bar//",         "", "/", "", "/foo/", "", "/", "", "/bar/", "", "/", "");
+        test_join("/foo/bar/",             "/", "foo", "/", "bar", "/");
+        test_join("foo/bar/baz",           "foo", "bar", "baz");
+        test_join("foo/bar/baz",           "foo/", "bar", "/baz");
+        test_join("foo//bar//baz",         "foo/", "/bar/", "/baz");
+        test_join("//foo////bar////baz//", "//foo/", "///bar/", "///baz//");
+}
+
+TEST(path_extend) {
+        _cleanup_free_ char *p = NULL;
+
+        assert_se(path_extend(&p, "foo", "bar", "baz") == p);
+        assert_se(streq(p, "foo/bar/baz"));
+
+        assert_se(path_extend(&p, "foo", "bar", "baz") == p);
+        assert_se(streq(p, "foo/bar/baz/foo/bar/baz"));
+
+        p = mfree(p);
+        assert_se(path_extend(&p, "foo") == p);
+        assert_se(streq(p, "foo"));
+
+        assert_se(path_extend(&p, "/foo") == p);
+        assert_se(streq(p, "foo/foo"));
+        assert_se(path_extend(&p, "/waaaah/wahhh//") == p);
+        assert_se(streq(p, "foo/foo/waaaah/wahhh//")); /* path_extend() does not drop redundant slashes */
+        assert_se(path_extend(&p, "/aaa/bbb/") == p);
+        assert_se(streq(p, "foo/foo/waaaah/wahhh///aaa/bbb/")); /* but not add an extra slash */
+
+        assert_se(free_and_strdup(&p, "/") >= 0);
+        assert_se(path_extend(&p, "foo") == p);
+        assert_se(streq(p, "/foo"));
+}
+
+TEST(fsck_exists) {
+        /* Ensure we use a sane default for PATH. */
+        assert_se(unsetenv("PATH") == 0);
+
+        /* We might or might not find one of these, so keep the test lax. */
+        assert_se(fsck_exists_for_fstype("minix") >= 0);
+
+        assert_se(fsck_exists_for_fstype("AbCdE") == 0);
+        assert_se(fsck_exists_for_fstype("/../bin/") == 0);
+}
+
+static void test_path_make_relative_one(const char *from, const char *to, const char *expected) {
+        _cleanup_free_ char *z = NULL;
+        int r;
+
+        log_info("/* %s(%s, %s) */", __func__, from, to);
+
+        r = path_make_relative(from, to, &z);
+        assert_se((r >= 0) == !!expected);
+        assert_se(streq_ptr(z, expected));
+}
+
+TEST(path_make_relative) {
+        test_path_make_relative_one("some/relative/path", "/some/path", NULL);
+        test_path_make_relative_one("/some/path", "some/relative/path", NULL);
+        test_path_make_relative_one("/some/dotdot/../path", "/some/path", NULL);
+
+        test_path_make_relative_one("/", "/", ".");
+        test_path_make_relative_one("/", "/some/path", "some/path");
+        test_path_make_relative_one("/some/path", "/some/path", ".");
+        test_path_make_relative_one("/some/path", "/some/path/in/subdir", "in/subdir");
+        test_path_make_relative_one("/some/path", "/", "../..");
+        test_path_make_relative_one("/some/path", "/some/other/path", "../other/path");
+        test_path_make_relative_one("/some/path/./dot", "/some/further/path", "../../further/path");
+        test_path_make_relative_one("//extra.//.//./.slashes//./won't////fo.ol///anybody//", "/././/extra././/.slashes////ar.e/.just/././.fine///", "../../../ar.e/.just/.fine");
+}
+
+static void test_path_make_relative_parent_one(const char *from, const char *to, const char *expected) {
+        _cleanup_free_ char *z = NULL;
+        int r;
+
+        log_info("/* %s(%s, %s) */", __func__, from, to);
+
+        r = path_make_relative_parent(from, to, &z);
+        assert_se((r >= 0) == !!expected);
+        assert_se(streq_ptr(z, expected));
+}
+
+TEST(path_make_relative_parent) {
+        test_path_make_relative_parent_one("some/relative/path/hoge", "/some/path", NULL);
+        test_path_make_relative_parent_one("/some/path/hoge", "some/relative/path", NULL);
+        test_path_make_relative_parent_one("/some/dotdot/../path/hoge", "/some/path", NULL);
+        test_path_make_relative_parent_one("/", "/aaa", NULL);
+
+        test_path_make_relative_parent_one("/hoge", "/", ".");
+        test_path_make_relative_parent_one("/hoge", "/some/path", "some/path");
+        test_path_make_relative_parent_one("/some/path/hoge", "/some/path", ".");
+        test_path_make_relative_parent_one("/some/path/hoge", "/some/path/in/subdir", "in/subdir");
+        test_path_make_relative_parent_one("/some/path/hoge", "/", "../..");
+        test_path_make_relative_parent_one("/some/path/hoge", "/some/other/path", "../other/path");
+        test_path_make_relative_parent_one("/some/path/./dot/hoge", "/some/further/path", "../../further/path");
+        test_path_make_relative_parent_one("//extra.//.//./.slashes//./won't////fo.ol///anybody//hoge", "/././/extra././/.slashes////ar.e/.just/././.fine///", "../../../ar.e/.just/.fine");
+}
+
+TEST(path_strv_resolve) {
+        char tmp_dir[] = "/tmp/test-path-util-XXXXXX";
+        _cleanup_strv_free_ char **search_dirs = NULL;
+        _cleanup_strv_free_ char **absolute_dirs = NULL;
+
+        assert_se(mkdtemp(tmp_dir) != NULL);
+
+        search_dirs = strv_new("/dir1", "/dir2", "/dir3");
+        assert_se(search_dirs);
+        STRV_FOREACH(d, search_dirs) {
+                char *p = path_join(tmp_dir, *d);
+                assert_se(p);
+                assert_se(strv_push(&absolute_dirs, p) == 0);
+        }
+
+        assert_se(mkdir(absolute_dirs[0], 0700) == 0);
+        assert_se(mkdir(absolute_dirs[1], 0700) == 0);
+        assert_se(symlink("dir2", absolute_dirs[2]) == 0);
+
+        path_strv_resolve(search_dirs, tmp_dir);
+        assert_se(streq(search_dirs[0], "/dir1"));
+        assert_se(streq(search_dirs[1], "/dir2"));
+        assert_se(streq(search_dirs[2], "/dir2"));
+
+        assert_se(rm_rf(tmp_dir, REMOVE_ROOT|REMOVE_PHYSICAL) == 0);
+}
+
+static void test_path_startswith_one(const char *path, const char *prefix, const char *skipped, const char *expected) {
+        const char *p, *q;
+
+        log_debug("/* %s(%s, %s) */", __func__, path, prefix);
+
+        p = path_startswith(path, prefix);
+        assert_se(streq_ptr(p, expected));
+        if (p) {
+                q = strjoina(skipped, p);
+                assert_se(streq(q, path));
+                assert_se(p == path + strlen(skipped));
+        }
+}
+
+TEST(path_startswith) {
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo", "/foo/", "bar/barfoo/");
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo/", "/foo/", "bar/barfoo/");
+        test_path_startswith_one("/foo/bar/barfoo/", "/", "/", "foo/bar/barfoo/");
+        test_path_startswith_one("/foo/bar/barfoo/", "////", "/",  "foo/bar/barfoo/");
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo//bar/////barfoo///", "/foo/bar/barfoo/", "");
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo/bar/barfoo////", "/foo/bar/barfoo/", "");
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo/bar///barfoo/", "/foo/bar/barfoo/", "");
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo////bar/barfoo/", "/foo/bar/barfoo/", "");
+        test_path_startswith_one("/foo/bar/barfoo/", "////foo/bar/barfoo/", "/foo/bar/barfoo/", "");
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo/bar/barfoo", "/foo/bar/barfoo/", "");
+
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "/foo", "/foo/./", "bar///barfoo/./.");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "/foo/", "/foo/./", "bar///barfoo/./.");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "/", "/", "foo/./bar///barfoo/./.");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "////", "/",  "foo/./bar///barfoo/./.");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "/foo//bar/////barfoo///", "/foo/./bar///barfoo/./.", "");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "/foo/bar/barfoo////", "/foo/./bar///barfoo/./.", "");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "/foo/bar///barfoo/", "/foo/./bar///barfoo/./.", "");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "/foo////bar/barfoo/", "/foo/./bar///barfoo/./.", "");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "////foo/bar/barfoo/", "/foo/./bar///barfoo/./.", "");
+        test_path_startswith_one("/foo/./bar///barfoo/./.", "/foo/bar/barfoo", "/foo/./bar///barfoo/./.", "");
+
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo/bar/barfooa/", NULL, NULL);
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo/bar/barfooa", NULL, NULL);
+        test_path_startswith_one("/foo/bar/barfoo/", "", NULL, NULL);
+        test_path_startswith_one("/foo/bar/barfoo/", "/bar/foo", NULL, NULL);
+        test_path_startswith_one("/foo/bar/barfoo/", "/f/b/b/", NULL, NULL);
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo/bar/barfo", NULL, NULL);
+        test_path_startswith_one("/foo/bar/barfoo/", "/foo/bar/bar", NULL, NULL);
+        test_path_startswith_one("/foo/bar/barfoo/", "/fo", NULL, NULL);
+}
+
+static void test_prefix_root_one(const char *r, const char *p, const char *expected) {
+        _cleanup_free_ char *s = NULL;
+        const char *t;
+
+        assert_se(s = path_join(r, p));
+        assert_se(path_equal_ptr(s, expected));
+
+        t = prefix_roota(r, p);
+        assert_se(t);
+        assert_se(path_equal_ptr(t, expected));
+}
+
+TEST(prefix_root) {
+        test_prefix_root_one("/", "/foo", "/foo");
+        test_prefix_root_one(NULL, "/foo", "/foo");
+        test_prefix_root_one("", "/foo", "/foo");
+        test_prefix_root_one("///", "/foo", "/foo");
+        test_prefix_root_one("/", "////foo", "/foo");
+        test_prefix_root_one(NULL, "////foo", "/foo");
+        test_prefix_root_one("/", "foo", "/foo");
+        test_prefix_root_one("", "foo", "foo");
+        test_prefix_root_one(NULL, "foo", "foo");
+
+        test_prefix_root_one("/foo", "/bar", "/foo/bar");
+        test_prefix_root_one("/foo", "bar", "/foo/bar");
+        test_prefix_root_one("foo", "bar", "foo/bar");
+        test_prefix_root_one("/foo/", "/bar", "/foo/bar");
+        test_prefix_root_one("/foo/", "//bar", "/foo/bar");
+        test_prefix_root_one("/foo///", "//bar", "/foo/bar");
+}
+
+TEST(file_in_same_dir) {
+        char *t;
+
+        assert_se(file_in_same_dir("/", "a", &t) == -EADDRNOTAVAIL);
+
+        assert_se(file_in_same_dir("/", "/a", &t) >= 0);
+        assert_se(streq(t, "/a"));
+        free(t);
+
+        assert_se(file_in_same_dir("", "a", &t) == -EINVAL);
+
+        assert_se(file_in_same_dir("a/", "x", &t) >= 0);
+        assert_se(streq(t, "x"));
+        free(t);
+
+        assert_se(file_in_same_dir("bar/foo", "bar", &t) >= 0);
+        assert_se(streq(t, "bar/bar"));
+        free(t);
+}
+
+static void test_path_find_first_component_one(
+                const char *path,
+                bool accept_dot_dot,
+                char **expected,
+                int ret) {
+
+        log_debug("/* %s(\"%s\", accept_dot_dot=%s) */", __func__, strnull(path), yes_no(accept_dot_dot));
+
+        for (const char *p = path;;) {
+                const char *e;
+                int r;
+
+                r = path_find_first_component(&p, accept_dot_dot, &e);
+                if (r <= 0) {
+                        if (r == 0) {
+                                if (path) {
+                                        assert_se(p == path + strlen_ptr(path));
+                                        assert_se(isempty(p));
+                                } else
+                                        assert_se(!p);
+                                assert_se(!e);
+                        }
+                        assert_se(r == ret);
+                        assert_se(strv_isempty(expected));
+                        return;
+                }
+
+                assert_se(e);
+                assert_se(strcspn(e, "/") == (size_t) r);
+                assert_se(strlen_ptr(*expected) == (size_t) r);
+                assert_se(strneq(e, *expected++, r));
+
+                assert_se(p);
+                log_debug("p=%s", p);
+                if (!isempty(*expected))
+                        assert_se(startswith(p, *expected));
+                else if (ret >= 0) {
+                        assert_se(p == path + strlen_ptr(path));
+                        assert_se(isempty(p));
+                }
+        }
+}
+
+TEST(path_find_first_component) {
+        _cleanup_free_ char *hoge = NULL;
+        char foo[NAME_MAX * 2];
+
+        test_path_find_first_component_one(NULL, false, NULL, 0);
+        test_path_find_first_component_one("", false, NULL, 0);
+        test_path_find_first_component_one("/", false, NULL, 0);
+        test_path_find_first_component_one(".", false, NULL, 0);
+        test_path_find_first_component_one("./", false, NULL, 0);
+        test_path_find_first_component_one("./.", false, NULL, 0);
+        test_path_find_first_component_one("..", false, NULL, -EINVAL);
+        test_path_find_first_component_one("/..", false, NULL, -EINVAL);
+        test_path_find_first_component_one("./..", false, NULL, -EINVAL);
+        test_path_find_first_component_one("////./././//.", false, NULL, 0);
+        test_path_find_first_component_one("a/b/c", false, STRV_MAKE("a", "b", "c"), 0);
+        test_path_find_first_component_one("././//.///aa/bbb//./ccc", false, STRV_MAKE("aa", "bbb", "ccc"), 0);
+        test_path_find_first_component_one("././//.///aa/.../../bbb//./ccc/.", false, STRV_MAKE("aa", "..."), -EINVAL);
+        test_path_find_first_component_one("//./aaa///.//./.bbb/..///c.//d.dd///..eeee/.", false, STRV_MAKE("aaa", ".bbb"), -EINVAL);
+        test_path_find_first_component_one("a/foo./b//././/", false, STRV_MAKE("a", "foo.", "b"), 0);
+
+        test_path_find_first_component_one(NULL, true, NULL, 0);
+        test_path_find_first_component_one("", true, NULL, 0);
+        test_path_find_first_component_one("/", true, NULL, 0);
+        test_path_find_first_component_one(".", true, NULL, 0);
+        test_path_find_first_component_one("./", true, NULL, 0);
+        test_path_find_first_component_one("./.", true, NULL, 0);
+        test_path_find_first_component_one("..", true, STRV_MAKE(".."), 0);
+        test_path_find_first_component_one("/..", true, STRV_MAKE(".."), 0);
+        test_path_find_first_component_one("./..", true, STRV_MAKE(".."), 0);
+        test_path_find_first_component_one("////./././//.", true, NULL, 0);
+        test_path_find_first_component_one("a/b/c", true, STRV_MAKE("a", "b", "c"), 0);
+        test_path_find_first_component_one("././//.///aa/bbb//./ccc", true, STRV_MAKE("aa", "bbb", "ccc"), 0);
+        test_path_find_first_component_one("././//.///aa/.../../bbb//./ccc/.", true, STRV_MAKE("aa", "...", "..", "bbb", "ccc"), 0);
+        test_path_find_first_component_one("//./aaa///.//./.bbb/..///c.//d.dd///..eeee/.", true, STRV_MAKE("aaa", ".bbb", "..", "c.", "d.dd", "..eeee"), 0);
+        test_path_find_first_component_one("a/foo./b//././/", true, STRV_MAKE("a", "foo.", "b"), 0);
+
+        memset(foo, 'a', sizeof(foo) -1);
+        char_array_0(foo);
+
+        test_path_find_first_component_one(foo, false, NULL, -EINVAL);
+        test_path_find_first_component_one(foo, true, NULL, -EINVAL);
+
+        hoge = strjoin("a/b/c/", foo, "//d/e/.//f/");
+        assert_se(hoge);
+
+        test_path_find_first_component_one(hoge, false, STRV_MAKE("a", "b", "c"), -EINVAL);
+        test_path_find_first_component_one(hoge, true, STRV_MAKE("a", "b", "c"), -EINVAL);
+}
+
+static void test_path_find_last_component_one(
+                const char *path,
+                bool accept_dot_dot,
+                char **expected,
+                int ret) {
+
+        log_debug("/* %s(\"%s\", accept_dot_dot=%s) */", __func__, strnull(path), yes_no(accept_dot_dot));
+
+        for (const char *next = NULL;;) {
+                const char *e;
+                int r;
+
+                r = path_find_last_component(path, accept_dot_dot, &next, &e);
+                if (r <= 0) {
+                        if (r == 0) {
+                                assert_se(next == path);
+                                assert_se(!e);
+                        }
+                        assert_se(r == ret);
+                        assert_se(strv_isempty(expected));
+                        return;
+                }
+
+                assert_se(e);
+                assert_se(strcspn(e, "/") == (size_t) r);
+                assert_se(strlen_ptr(*expected) == (size_t) r);
+                assert_se(strneq(e, *expected++, r));
+
+                assert_se(next);
+                log_debug("path=%s\nnext=%s", path, next);
+                if (!isempty(*expected)) {
+                        assert_se(next < path + strlen(path));
+                        assert_se(next >= path + strlen(*expected));
+                        assert_se(startswith(next - strlen(*expected), *expected));
+                } else if (ret >= 0)
+                        assert_se(next == path);
+        }
+}
+
+TEST(path_find_last_component) {
+        _cleanup_free_ char *hoge = NULL;
+        char foo[NAME_MAX * 2];
+
+        test_path_find_last_component_one(NULL, false, NULL, 0);
+        test_path_find_last_component_one("", false, NULL, 0);
+        test_path_find_last_component_one("/", false, NULL, 0);
+        test_path_find_last_component_one(".", false, NULL, 0);
+        test_path_find_last_component_one("./", false, NULL, 0);
+        test_path_find_last_component_one("./.", false, NULL, 0);
+        test_path_find_last_component_one("..", false, NULL, -EINVAL);
+        test_path_find_last_component_one("/..", false, NULL, -EINVAL);
+        test_path_find_last_component_one("./..", false, NULL, -EINVAL);
+        test_path_find_last_component_one("////./././//.", false, NULL, 0);
+        test_path_find_last_component_one("a/b/c", false, STRV_MAKE("c", "b", "a"), 0);
+        test_path_find_last_component_one("././//.///aa./.bbb//./ccc/././/", false, STRV_MAKE("ccc", ".bbb", "aa."), 0);
+        test_path_find_last_component_one("././//.///aa/../.../bbb//./ccc/.", false, STRV_MAKE("ccc", "bbb", "..."), -EINVAL);
+        test_path_find_last_component_one("//./aaa///.//./.bbb/..///c.//d.dd///..eeee/.", false, STRV_MAKE("..eeee", "d.dd", "c."), -EINVAL);
+
+        test_path_find_last_component_one(NULL, true, NULL, 0);
+        test_path_find_last_component_one("", true, NULL, 0);
+        test_path_find_last_component_one("/", true, NULL, 0);
+        test_path_find_last_component_one(".", true, NULL, 0);
+        test_path_find_last_component_one("./", true, NULL, 0);
+        test_path_find_last_component_one("./.", true, NULL, 0);
+        test_path_find_last_component_one("..", true, STRV_MAKE(".."), 0);
+        test_path_find_last_component_one("/..", true, STRV_MAKE(".."), 0);
+        test_path_find_last_component_one("./..", true, STRV_MAKE(".."), 0);
+        test_path_find_last_component_one("////./././//.", true, NULL, 0);
+        test_path_find_last_component_one("a/b/c", true, STRV_MAKE("c", "b", "a"), 0);
+        test_path_find_last_component_one("././//.///aa./.bbb//./ccc/././/", true, STRV_MAKE("ccc", ".bbb", "aa."), 0);
+        test_path_find_last_component_one("././//.///aa/../.../bbb//./ccc/.", true, STRV_MAKE("ccc", "bbb", "...", "..", "aa"), 0);
+        test_path_find_last_component_one("//./aaa///.//./.bbb/..///c.//d.dd///..eeee/.", true, STRV_MAKE("..eeee", "d.dd", "c.", "..", ".bbb", "aaa"), 0);
+
+        memset(foo, 'a', sizeof(foo) -1);
+        char_array_0(foo);
+
+        test_path_find_last_component_one(foo, false, NULL, -EINVAL);
+        test_path_find_last_component_one(foo, true, NULL, -EINVAL);
+
+        hoge = strjoin(foo, "/a/b/c/");
+        assert_se(hoge);
+
+        test_path_find_last_component_one(hoge, false, STRV_MAKE("c", "b", "a"), -EINVAL);
+        test_path_find_last_component_one(hoge, true, STRV_MAKE("c", "b", "a"), -EINVAL);
+}
+
+TEST(last_path_component) {
+        assert_se(last_path_component(NULL) == NULL);
+        assert_se(streq(last_path_component("a/b/c"), "c"));
+        assert_se(streq(last_path_component("a/b/c/"), "c/"));
+        assert_se(streq(last_path_component("/"), "/"));
+        assert_se(streq(last_path_component("//"), "/"));
+        assert_se(streq(last_path_component("///"), "/"));
+        assert_se(streq(last_path_component("."), "."));
+        assert_se(streq(last_path_component("./."), "."));
+        assert_se(streq(last_path_component("././"), "./"));
+        assert_se(streq(last_path_component("././/"), ".//"));
+        assert_se(streq(last_path_component("/foo/a"), "a"));
+        assert_se(streq(last_path_component("/foo/a/"), "a/"));
+        assert_se(streq(last_path_component(""), ""));
+        assert_se(streq(last_path_component("a"), "a"));
+        assert_se(streq(last_path_component("a/"), "a/"));
+        assert_se(streq(last_path_component("/a"), "a"));
+        assert_se(streq(last_path_component("/a/"), "a/"));
+}
+
+static void test_path_extract_filename_one(const char *input, const char *output, int ret) {
+        _cleanup_free_ char *k = NULL;
+        int r;
+
+        r = path_extract_filename(input, &k);
+        log_info("%s → %s/%s [expected: %s/%s]",
+                 strnull(input),
+                 strnull(k), r < 0 ? STRERROR(r) : "-",
+                 strnull(output), ret < 0 ? STRERROR(ret) : "-");
+        assert_se(streq_ptr(k, output));
+        assert_se(r == ret);
+}
+
+TEST(path_extract_filename) {
+        test_path_extract_filename_one(NULL, NULL, -EINVAL);
+        test_path_extract_filename_one("a/b/c", "c", 0);
+        test_path_extract_filename_one("a/b/c/", "c", O_DIRECTORY);
+        test_path_extract_filename_one("/", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one("//", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one("///", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one("/.", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one(".", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one("./", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one("./.", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one("././", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one("././/", NULL, -EADDRNOTAVAIL);
+        test_path_extract_filename_one("/foo/a", "a", 0);
+        test_path_extract_filename_one("/foo/a/", "a", O_DIRECTORY);
+        test_path_extract_filename_one("", NULL, -EINVAL);
+        test_path_extract_filename_one("a", "a", 0);
+        test_path_extract_filename_one("a/", "a", O_DIRECTORY);
+        test_path_extract_filename_one("a/././//.", "a", O_DIRECTORY);
+        test_path_extract_filename_one("/a", "a", 0);
+        test_path_extract_filename_one("/a/", "a", O_DIRECTORY);
+        test_path_extract_filename_one("/a//./.", "a", O_DIRECTORY);
+        test_path_extract_filename_one("/////////////a/////////////", "a", O_DIRECTORY);
+        test_path_extract_filename_one("//./a/.///b./././.c//./d//.", "d", O_DIRECTORY);
+        test_path_extract_filename_one("xx/.", "xx", O_DIRECTORY);
+        test_path_extract_filename_one("xx/..", NULL, -EINVAL);
+        test_path_extract_filename_one("..", NULL, -EINVAL);
+        test_path_extract_filename_one("/..", NULL, -EINVAL);
+        test_path_extract_filename_one("../", NULL, -EINVAL);
+}
+
+static void test_path_extract_directory_one(const char *input, const char *output, int ret) {
+        _cleanup_free_ char *k = NULL;
+        int r;
+
+        r = path_extract_directory(input, &k);
+        log_info("%s → %s/%s [expected: %s/%s]",
+                 strnull(input),
+                 strnull(k), r < 0 ? STRERROR(r) : "-",
+                 strnull(output), STRERROR(ret));
+        assert_se(streq_ptr(k, output));
+        assert_se(r == ret);
+
+        /* Extra safety check: let's make sure that if we split out the filename too (and it works) the
+         * joined parts are identical to the original again */
+        if (r >= 0) {
+                _cleanup_free_ char *f = NULL;
+
+                r = path_extract_filename(input, &f);
+                if (r >= 0) {
+                        _cleanup_free_ char *j = NULL;
+
+                        assert_se(j = path_join(k, f));
+                        assert_se(path_equal(input, j));
+                }
+        }
+}
+
+TEST(path_extract_directory) {
+        test_path_extract_directory_one(NULL, NULL, -EINVAL);
+        test_path_extract_directory_one("a/b/c", "a/b", 0);
+        test_path_extract_directory_one("a/b/c/", "a/b", 0);
+        test_path_extract_directory_one("/", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one("//", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one("///", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one("/.", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one(".", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one("./", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one("./.", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one("././", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one("././/", NULL, -EADDRNOTAVAIL);
+        test_path_extract_directory_one("/foo/a", "/foo", 0);
+        test_path_extract_directory_one("/foo/a/", "/foo", 0);
+        test_path_extract_directory_one("", NULL, -EINVAL);
+        test_path_extract_directory_one("a", NULL, -EDESTADDRREQ);
+        test_path_extract_directory_one("a/", NULL, -EDESTADDRREQ);
+        test_path_extract_directory_one("a/././//.", NULL, -EDESTADDRREQ);
+        test_path_extract_directory_one("/a", "/", 0);
+        test_path_extract_directory_one("/a/", "/", 0);
+        test_path_extract_directory_one("/a//./.", "/", 0);
+        test_path_extract_directory_one("/////////////a/////////////", "/", 0);
+        test_path_extract_directory_one("//./a/.///b./././.c//./d//.", "/a/b./.c", 0);
+        test_path_extract_directory_one("xx/.", NULL, -EDESTADDRREQ);
+        test_path_extract_directory_one("xx/..", NULL, -EINVAL);
+        test_path_extract_directory_one("..", NULL, -EINVAL);
+        test_path_extract_directory_one("/..", NULL, -EINVAL);
+        test_path_extract_directory_one("../", NULL, -EINVAL);
+}
+
+TEST(filename_is_valid) {
+        char foo[NAME_MAX+2];
+
+        assert_se(!filename_is_valid(""));
+        assert_se(!filename_is_valid("/bar/foo"));
+        assert_se(!filename_is_valid("/"));
+        assert_se(!filename_is_valid("."));
+        assert_se(!filename_is_valid(".."));
+        assert_se(!filename_is_valid("bar/foo"));
+        assert_se(!filename_is_valid("bar/foo/"));
+        assert_se(!filename_is_valid("bar//"));
+
+        memset(foo, 'a', sizeof(foo) - 1);
+        char_array_0(foo);
+
+        assert_se(!filename_is_valid(foo));
+
+        assert_se(filename_is_valid("foo_bar-333"));
+        assert_se(filename_is_valid("o.o"));
+}
+
+static void test_path_is_valid_and_safe_one(const char *p, bool ret) {
+        log_debug("/* %s(\"%s\") */", __func__, strnull(p));
+
+        assert_se(path_is_valid(p) == ret);
+        if (ret)
+                ret = !streq(p, "..") &&
+                        !startswith(p, "../") &&
+                        !endswith(p, "/..") &&
+                        !strstr(p, "/../");
+        assert_se(path_is_safe(p) == ret);
+}
+
+TEST(path_is_valid_and_safe) {
+        char foo[PATH_MAX+2];
+        const char *c;
+
+        test_path_is_valid_and_safe_one("", false);
+        test_path_is_valid_and_safe_one("/bar/foo", true);
+        test_path_is_valid_and_safe_one("/bar/foo/", true);
+        test_path_is_valid_and_safe_one("/bar/foo/", true);
+        test_path_is_valid_and_safe_one("//bar//foo//", true);
+        test_path_is_valid_and_safe_one("/", true);
+        test_path_is_valid_and_safe_one("/////", true);
+        test_path_is_valid_and_safe_one("/////.///.////...///..//.", true);
+        test_path_is_valid_and_safe_one(".", true);
+        test_path_is_valid_and_safe_one("..", true);
+        test_path_is_valid_and_safe_one("bar/foo", true);
+        test_path_is_valid_and_safe_one("bar/foo/", true);
+        test_path_is_valid_and_safe_one("bar//", true);
+
+        memset(foo, 'a', sizeof(foo) -1);
+        char_array_0(foo);
+
+        test_path_is_valid_and_safe_one(foo, false);
+
+        c = strjoina("/xxx/", foo, "/yyy");
+        test_path_is_valid_and_safe_one(c, false);
+
+        test_path_is_valid_and_safe_one("foo_bar-333", true);
+        test_path_is_valid_and_safe_one("o.o", true);
+}
+
+TEST(hidden_or_backup_file) {
+        assert_se(hidden_or_backup_file(".hidden"));
+        assert_se(hidden_or_backup_file("..hidden"));
+        assert_se(!hidden_or_backup_file("hidden."));
+
+        assert_se(hidden_or_backup_file("backup~"));
+        assert_se(hidden_or_backup_file(".backup~"));
+
+        assert_se(hidden_or_backup_file("lost+found"));
+        assert_se(hidden_or_backup_file("aquota.user"));
+        assert_se(hidden_or_backup_file("aquota.group"));
+
+        assert_se(hidden_or_backup_file("test.rpmnew"));
+        assert_se(hidden_or_backup_file("test.dpkg-old"));
+        assert_se(hidden_or_backup_file("test.dpkg-remove"));
+        assert_se(hidden_or_backup_file("test.swp"));
+
+        assert_se(!hidden_or_backup_file("test.rpmnew."));
+        assert_se(!hidden_or_backup_file("test.dpkg-old.foo"));
+}
+
+TEST(skip_dev_prefix) {
+        assert_se(streq(skip_dev_prefix("/"), "/"));
+        assert_se(streq(skip_dev_prefix("/dev"), ""));
+        assert_se(streq(skip_dev_prefix("/dev/"), ""));
+        assert_se(streq(skip_dev_prefix("/dev/foo"), "foo"));
+        assert_se(streq(skip_dev_prefix("/dev/foo/bar"), "foo/bar"));
+        assert_se(streq(skip_dev_prefix("//dev"), ""));
+        assert_se(streq(skip_dev_prefix("//dev//"), ""));
+        assert_se(streq(skip_dev_prefix("/dev///foo"), "foo"));
+        assert_se(streq(skip_dev_prefix("///dev///foo///bar"), "foo///bar"));
+        assert_se(streq(skip_dev_prefix("//foo"), "//foo"));
+        assert_se(streq(skip_dev_prefix("foo"), "foo"));
+}
+
+TEST(empty_or_root) {
+        assert_se(empty_or_root(NULL));
+        assert_se(empty_or_root(""));
+        assert_se(empty_or_root("/"));
+        assert_se(empty_or_root("//"));
+        assert_se(empty_or_root("///"));
+        assert_se(empty_or_root("/////////////////"));
+        assert_se(!empty_or_root("xxx"));
+        assert_se(!empty_or_root("/xxx"));
+        assert_se(!empty_or_root("/xxx/"));
+        assert_se(!empty_or_root("//yy//"));
+}
+
+TEST(path_startswith_set) {
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar", "/foo/quux", "/foo/bar", "/zzz"), ""));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar", "/foo/quux", "/foo/", "/zzz"), "bar"));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar", "/foo/quux", "/foo", "/zzz"), "bar"));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar", "/foo/quux", "/", "/zzz"), "foo/bar"));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar", "/foo/quux", "", "/zzz"), NULL));
+
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar2", "/foo/quux", "/foo/bar", "/zzz"), NULL));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar2", "/foo/quux", "/foo/", "/zzz"), "bar2"));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar2", "/foo/quux", "/foo", "/zzz"), "bar2"));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar2", "/foo/quux", "/", "/zzz"), "foo/bar2"));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo/bar2", "/foo/quux", "", "/zzz"), NULL));
+
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo2/bar", "/foo/quux", "/foo/bar", "/zzz"), NULL));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo2/bar", "/foo/quux", "/foo/", "/zzz"), NULL));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo2/bar", "/foo/quux", "/foo", "/zzz"), NULL));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo2/bar", "/foo/quux", "/", "/zzz"), "foo2/bar"));
+        assert_se(streq_ptr(PATH_STARTSWITH_SET("/foo2/bar", "/foo/quux", "", "/zzz"), NULL));
+}
+
+TEST(path_startswith_strv) {
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar", STRV_MAKE("/foo/quux", "/foo/bar", "/zzz")), ""));
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar", STRV_MAKE("/foo/quux", "/foo/", "/zzz")), "bar"));
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar", STRV_MAKE("/foo/quux", "/foo", "/zzz")), "bar"));
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar", STRV_MAKE("/foo/quux", "/", "/zzz")), "foo/bar"));
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar", STRV_MAKE("/foo/quux", "", "/zzz")), NULL));
+
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar2", STRV_MAKE("/foo/quux", "/foo/bar", "/zzz")), NULL));
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar2", STRV_MAKE("/foo/quux", "/foo/", "/zzz")), "bar2"));
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar2", STRV_MAKE("/foo/quux", "/foo", "/zzz")), "bar2"));
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar2", STRV_MAKE("/foo/quux", "/", "/zzz")), "foo/bar2"));
+        assert_se(streq_ptr(path_startswith_strv("/foo/bar2", STRV_MAKE("/foo/quux", "", "/zzz")), NULL));
+
+        assert_se(streq_ptr(path_startswith_strv("/foo2/bar", STRV_MAKE("/foo/quux", "/foo/bar", "/zzz")), NULL));
+        assert_se(streq_ptr(path_startswith_strv("/foo2/bar", STRV_MAKE("/foo/quux", "/foo/", "/zzz")), NULL));
+        assert_se(streq_ptr(path_startswith_strv("/foo2/bar", STRV_MAKE("/foo/quux", "/foo", "/zzz")), NULL));
+        assert_se(streq_ptr(path_startswith_strv("/foo2/bar", STRV_MAKE("/foo/quux", "/", "/zzz")), "foo2/bar"));
+        assert_se(streq_ptr(path_startswith_strv("/foo2/bar", STRV_MAKE("/foo/quux", "", "/zzz")), NULL));
+}
+
+static void test_path_glob_can_match_one(const char *pattern, const char *prefix, const char *expected) {
+        _cleanup_free_ char *result = NULL;
+
+        log_debug("%s(%s, %s, %s)", __func__, pattern, prefix, strnull(expected));
+
+        assert_se(path_glob_can_match(pattern, prefix, &result) == !!expected);
+        assert_se(streq_ptr(result, expected));
+}
+
+TEST(path_glob_can_match) {
+        test_path_glob_can_match_one("/foo/hoge/aaa", "/foo/hoge/aaa/bbb", NULL);
+        test_path_glob_can_match_one("/foo/hoge/aaa", "/foo/hoge/aaa", "/foo/hoge/aaa");
+        test_path_glob_can_match_one("/foo/hoge/aaa", "/foo/hoge", "/foo/hoge/aaa");
+        test_path_glob_can_match_one("/foo/hoge/aaa", "/foo", "/foo/hoge/aaa");
+        test_path_glob_can_match_one("/foo/hoge/aaa", "/", "/foo/hoge/aaa");
+
+        test_path_glob_can_match_one("/foo/*/aaa", "/foo/hoge/aaa/bbb", NULL);
+        test_path_glob_can_match_one("/foo/*/aaa", "/foo/hoge/aaa", "/foo/hoge/aaa");
+        test_path_glob_can_match_one("/foo/*/aaa", "/foo/hoge", "/foo/hoge/aaa");
+        test_path_glob_can_match_one("/foo/*/aaa", "/foo", "/foo/*/aaa");
+        test_path_glob_can_match_one("/foo/*/aaa", "/", "/foo/*/aaa");
+
+        test_path_glob_can_match_one("/foo/*/*/aaa", "/foo/xxx/yyy/aaa/bbb", NULL);
+        test_path_glob_can_match_one("/foo/*/*/aaa", "/foo/xxx/yyy/aaa", "/foo/xxx/yyy/aaa");
+        test_path_glob_can_match_one("/foo/*/*/aaa", "/foo/xxx/yyy", "/foo/xxx/yyy/aaa");
+        test_path_glob_can_match_one("/foo/*/*/aaa", "/foo/xxx", "/foo/xxx/*/aaa");
+        test_path_glob_can_match_one("/foo/*/*/aaa", "/foo", "/foo/*/*/aaa");
+        test_path_glob_can_match_one("/foo/*/*/aaa", "/", "/foo/*/*/aaa");
+
+        test_path_glob_can_match_one("/foo/*/aaa/*", "/foo/xxx/aaa/bbb/ccc", NULL);
+        test_path_glob_can_match_one("/foo/*/aaa/*", "/foo/xxx/aaa/bbb", "/foo/xxx/aaa/bbb");
+        test_path_glob_can_match_one("/foo/*/aaa/*", "/foo/xxx/ccc", NULL);
+        test_path_glob_can_match_one("/foo/*/aaa/*", "/foo/xxx/aaa", "/foo/xxx/aaa/*");
+        test_path_glob_can_match_one("/foo/*/aaa/*", "/foo/xxx", "/foo/xxx/aaa/*");
+        test_path_glob_can_match_one("/foo/*/aaa/*", "/foo", "/foo/*/aaa/*");
+        test_path_glob_can_match_one("/foo/*/aaa/*", "/", "/foo/*/aaa/*");
+}
+
+TEST(print_MAX) {
+        log_info("PATH_MAX=%zu\n"
+                 "FILENAME_MAX=%zu\n"
+                 "NAME_MAX=%zu",
+                 (size_t) PATH_MAX,
+                 (size_t) FILENAME_MAX,
+                 (size_t) NAME_MAX);
+
+        assert_cc(FILENAME_MAX == PATH_MAX);
+}
+
+DEFINE_TEST_MAIN(LOG_DEBUG);