--- /dev/null
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "chase.h"
+#include "dirent-util.h"
+#include "fd-util.h"
+#include "fs-util.h"
+#include "id128-util.h"
+#include "mkdir.h"
+#include "path-util.h"
+#include "rm-rf.h"
+#include "string-util.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+
+static const char *arg_test_dir = NULL;
+
+TEST(chase) {
+ _cleanup_free_ char *result = NULL, *pwd = NULL;
+ _cleanup_close_ int pfd = -EBADF;
+ char *temp;
+ const char *top, *p, *pslash, *q, *qslash;
+ struct stat st;
+ int r;
+
+ temp = strjoina(arg_test_dir ?: "/tmp", "/test-chase.XXXXXX");
+ assert_se(mkdtemp(temp));
+
+ top = strjoina(temp, "/top");
+ assert_se(mkdir(top, 0700) >= 0);
+
+ p = strjoina(top, "/dot");
+ if (symlink(".", p) < 0) {
+ assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM));
+ log_tests_skipped_errno(errno, "symlink() not possible");
+ goto cleanup;
+ };
+
+ p = strjoina(top, "/dotdot");
+ assert_se(symlink("..", p) >= 0);
+
+ p = strjoina(top, "/dotdota");
+ assert_se(symlink("../a", p) >= 0);
+
+ p = strjoina(temp, "/a");
+ assert_se(symlink("b", p) >= 0);
+
+ p = strjoina(temp, "/b");
+ assert_se(symlink("/usr", p) >= 0);
+
+ p = strjoina(temp, "/start");
+ assert_se(symlink("top/dot/dotdota", p) >= 0);
+
+ /* Paths that use symlinks underneath the "root" */
+
+ r = chase(p, NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/usr"));
+ result = mfree(result);
+
+ pslash = strjoina(p, "/");
+ r = chase(pslash, NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/usr/"));
+ result = mfree(result);
+
+ r = chase(p, temp, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ r = chase(pslash, temp, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ q = strjoina(temp, "/usr");
+
+ r = chase(p, temp, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(path_equal(result, q));
+ result = mfree(result);
+
+ qslash = strjoina(q, "/");
+
+ r = chase(pslash, temp, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(path_equal(result, qslash));
+ result = mfree(result);
+
+ assert_se(mkdir(q, 0700) >= 0);
+
+ r = chase(p, temp, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, q));
+ result = mfree(result);
+
+ r = chase(pslash, temp, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, qslash));
+ result = mfree(result);
+
+ p = strjoina(temp, "/slash");
+ assert_se(symlink("/", p) >= 0);
+
+ r = chase(p, NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/"));
+ result = mfree(result);
+
+ r = chase(p, temp, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, temp));
+ result = mfree(result);
+
+ /* Paths that would "escape" outside of the "root" */
+
+ p = strjoina(temp, "/6dots");
+ assert_se(symlink("../../..", p) >= 0);
+
+ r = chase(p, temp, 0, &result, NULL);
+ assert_se(r > 0 && path_equal(result, temp));
+ result = mfree(result);
+
+ p = strjoina(temp, "/6dotsusr");
+ assert_se(symlink("../../../usr", p) >= 0);
+
+ r = chase(p, temp, 0, &result, NULL);
+ assert_se(r > 0 && path_equal(result, q));
+ result = mfree(result);
+
+ p = strjoina(temp, "/top/8dotsusr");
+ assert_se(symlink("../../../../usr", p) >= 0);
+
+ r = chase(p, temp, 0, &result, NULL);
+ assert_se(r > 0 && path_equal(result, q));
+ result = mfree(result);
+
+ /* Paths that contain repeated slashes */
+
+ p = strjoina(temp, "/slashslash");
+ assert_se(symlink("///usr///", p) >= 0);
+
+ r = chase(p, NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/usr"));
+ assert_se(streq(result, "/usr")); /* we guarantee that we drop redundant slashes */
+ result = mfree(result);
+
+ r = chase(p, temp, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, q));
+ result = mfree(result);
+
+ /* Paths underneath the "root" with different UIDs while using CHASE_SAFE */
+
+ if (geteuid() == 0) {
+ p = strjoina(temp, "/user");
+ assert_se(mkdir(p, 0755) >= 0);
+ assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0);
+
+ q = strjoina(temp, "/user/root");
+ assert_se(mkdir(q, 0755) >= 0);
+
+ p = strjoina(q, "/link");
+ assert_se(symlink("/", p) >= 0);
+
+ /* Fail when user-owned directories contain root-owned subdirectories. */
+ r = chase(p, temp, CHASE_SAFE, &result, NULL);
+ assert_se(r == -ENOLINK);
+ result = mfree(result);
+
+ /* Allow this when the user-owned directories are all in the "root". */
+ r = chase(p, q, CHASE_SAFE, &result, NULL);
+ assert_se(r > 0);
+ result = mfree(result);
+ }
+
+ /* Paths using . */
+
+ r = chase("/etc/./.././", NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/"));
+ result = mfree(result);
+
+ r = chase("/etc/./.././", "/etc", 0, &result, NULL);
+ assert_se(r > 0 && path_equal(result, "/etc"));
+ result = mfree(result);
+
+ r = chase("/../.././//../../etc", NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(streq(result, "/etc"));
+ result = mfree(result);
+
+ r = chase("/../.././//../../test-chase.fsldajfl", NULL, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(streq(result, "/test-chase.fsldajfl"));
+ result = mfree(result);
+
+ r = chase("/../.././//../../etc", "/", CHASE_PREFIX_ROOT, &result, NULL);
+ assert_se(r > 0);
+ assert_se(streq(result, "/etc"));
+ result = mfree(result);
+
+ r = chase("/../.././//../../test-chase.fsldajfl", "/", CHASE_PREFIX_ROOT|CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(streq(result, "/test-chase.fsldajfl"));
+ result = mfree(result);
+
+ r = chase("/etc/machine-id/foo", NULL, 0, &result, NULL);
+ assert_se(IN_SET(r, -ENOTDIR, -ENOENT));
+ result = mfree(result);
+
+ /* Path that loops back to self */
+
+ p = strjoina(temp, "/recursive-symlink");
+ assert_se(symlink("recursive-symlink", p) >= 0);
+ r = chase(p, NULL, 0, &result, NULL);
+ assert_se(r == -ELOOP);
+
+ /* Path which doesn't exist */
+
+ p = strjoina(temp, "/idontexist");
+ r = chase(p, NULL, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(path_equal(result, p));
+ result = mfree(result);
+
+ p = strjoina(temp, "/idontexist/meneither");
+ r = chase(p, NULL, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(path_equal(result, p));
+ result = mfree(result);
+
+ /* Relative paths */
+
+ assert_se(safe_getcwd(&pwd) >= 0);
+
+ assert_se(chdir(temp) >= 0);
+
+ p = "this/is/a/relative/path";
+ r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+
+ p = strjoina(temp, "/", p);
+ assert_se(path_equal(result, p));
+ result = mfree(result);
+
+ p = "this/is/a/relative/path";
+ r = chase(p, temp, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+
+ p = strjoina(temp, "/", p);
+ assert_se(path_equal(result, p));
+ result = mfree(result);
+
+ assert_se(chdir(pwd) >= 0);
+
+ /* Path which doesn't exist, but contains weird stuff */
+
+ p = strjoina(temp, "/idontexist/..");
+ r = chase(p, NULL, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ p = strjoina(temp, "/target");
+ q = strjoina(temp, "/top");
+ assert_se(symlink(q, p) >= 0);
+ p = strjoina(temp, "/target/idontexist");
+ r = chase(p, NULL, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ if (geteuid() == 0) {
+ p = strjoina(temp, "/priv1");
+ assert_se(mkdir(p, 0755) >= 0);
+
+ q = strjoina(p, "/priv2");
+ assert_se(mkdir(q, 0755) >= 0);
+
+ assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
+
+ assert_se(chown(q, UID_NOBODY, GID_NOBODY) >= 0);
+ assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
+
+ assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0);
+ assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
+
+ assert_se(chown(q, 0, 0) >= 0);
+ assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK);
+
+ assert_se(rmdir(q) >= 0);
+ assert_se(symlink("/etc/passwd", q) >= 0);
+ assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK);
+
+ assert_se(chown(p, 0, 0) >= 0);
+ assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
+ }
+
+ p = strjoina(temp, "/machine-id-test");
+ assert_se(symlink("/usr/../etc/./machine-id", p) >= 0);
+
+ r = chase(p, NULL, 0, NULL, &pfd);
+ if (r != -ENOENT && sd_id128_get_machine(NULL) >= 0) {
+ _cleanup_close_ int fd = -EBADF;
+ sd_id128_t a, b;
+
+ assert_se(pfd >= 0);
+
+ fd = fd_reopen(pfd, O_RDONLY|O_CLOEXEC);
+ assert_se(fd >= 0);
+ safe_close(pfd);
+
+ assert_se(id128_read_fd(fd, ID128_FORMAT_PLAIN, &a) >= 0);
+ assert_se(sd_id128_get_machine(&b) >= 0);
+ assert_se(sd_id128_equal(a, b));
+ }
+
+ assert_se(lstat(p, &st) >= 0);
+ r = chase_and_unlink(p, NULL, 0, 0, &result);
+ assert_se(r == 0);
+ assert_se(path_equal(result, p));
+ result = mfree(result);
+ assert_se(lstat(p, &st) == -1 && errno == ENOENT);
+
+ /* Test CHASE_NOFOLLOW */
+
+ p = strjoina(temp, "/target");
+ q = strjoina(temp, "/symlink");
+ assert_se(symlink(p, q) >= 0);
+ r = chase(q, NULL, CHASE_NOFOLLOW, &result, &pfd);
+ assert_se(r >= 0);
+ assert_se(pfd >= 0);
+ assert_se(path_equal(result, q));
+ assert_se(fstat(pfd, &st) >= 0);
+ assert_se(S_ISLNK(st.st_mode));
+ result = mfree(result);
+ pfd = safe_close(pfd);
+
+ /* s1 -> s2 -> nonexistent */
+ q = strjoina(temp, "/s1");
+ assert_se(symlink("s2", q) >= 0);
+ p = strjoina(temp, "/s2");
+ assert_se(symlink("nonexistent", p) >= 0);
+ r = chase(q, NULL, CHASE_NOFOLLOW, &result, &pfd);
+ assert_se(r >= 0);
+ assert_se(pfd >= 0);
+ assert_se(path_equal(result, q));
+ assert_se(fstat(pfd, &st) >= 0);
+ assert_se(S_ISLNK(st.st_mode));
+ result = mfree(result);
+ pfd = safe_close(pfd);
+
+ /* Test CHASE_STEP */
+
+ p = strjoina(temp, "/start");
+ r = chase(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ p = strjoina(temp, "/top/dot/dotdota");
+ assert_se(streq(p, result));
+ result = mfree(result);
+
+ r = chase(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ p = strjoina(temp, "/top/dotdota");
+ assert_se(streq(p, result));
+ result = mfree(result);
+
+ r = chase(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ p = strjoina(temp, "/top/../a");
+ assert_se(streq(p, result));
+ result = mfree(result);
+
+ r = chase(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ p = strjoina(temp, "/a");
+ assert_se(streq(p, result));
+ result = mfree(result);
+
+ r = chase(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ p = strjoina(temp, "/b");
+ assert_se(streq(p, result));
+ result = mfree(result);
+
+ r = chase(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ assert_se(streq("/usr", result));
+ result = mfree(result);
+
+ r = chase("/usr", NULL, CHASE_STEP, &result, NULL);
+ assert_se(r > 0);
+ assert_se(streq("/usr", result));
+ result = mfree(result);
+
+ /* Make sure that symlinks in the "root" path are not resolved, but those below are */
+ p = strjoina("/etc/..", temp, "/self");
+ assert_se(symlink(".", p) >= 0);
+ q = strjoina(p, "/top/dot/dotdota");
+ r = chase(q, p, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(path_startswith(result, p), "usr"));
+ result = mfree(result);
+
+ /* Test CHASE_PROHIBIT_SYMLINKS */
+
+ assert_se(chase("top/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
+ assert_se(chase("top/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
+ assert_se(chase("top/dotdot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
+ assert_se(chase("top/dotdot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
+ assert_se(chase("top/dot/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
+ assert_se(chase("top/dot/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
+
+ cleanup:
+ assert_se(rm_rf(temp, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
+}
+
+TEST(chaseat) {
+ _cleanup_(rm_rf_physical_and_freep) char *t = NULL;
+ _cleanup_close_ int tfd = -EBADF, fd = -EBADF;
+ _cleanup_free_ char *result = NULL;
+ _cleanup_closedir_ DIR *dir = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ struct stat st;
+ const char *p;
+
+ assert_se((tfd = mkdtemp_open(NULL, 0, &t)) >= 0);
+
+ /* Test that AT_FDCWD with CHASE_AT_RESOLVE_IN_ROOT resolves against / and not the current working
+ * directory. */
+
+ assert_se(symlinkat("/usr", tfd, "abc") >= 0);
+
+ p = strjoina(t, "/abc");
+ assert_se(chaseat(AT_FDCWD, p, CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
+ assert_se(streq(result, "/usr"));
+ result = mfree(result);
+
+ /* Test that absolute path or not are the same when resolving relative to a directory file
+ * descriptor and that we always get a relative path back. */
+
+ assert_se(fd = openat(tfd, "def", O_CREAT|O_CLOEXEC, 0700) >= 0);
+ fd = safe_close(fd);
+ assert_se(symlinkat("/def", tfd, "qed") >= 0);
+ assert_se(chaseat(tfd, "qed", CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
+ assert_se(streq(result, "def"));
+ result = mfree(result);
+ assert_se(chaseat(tfd, "/qed", CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
+ assert_se(streq(result, "def"));
+ result = mfree(result);
+
+ /* Valid directory file descriptor without CHASE_AT_RESOLVE_IN_ROOT should resolve symlinks against
+ * host's root. */
+ assert_se(chaseat(tfd, "/qed", 0, NULL, NULL) == -ENOENT);
+
+ /* Test CHASE_PARENT */
+
+ assert_se((fd = open_mkdir_at(tfd, "chase", O_CLOEXEC, 0755)) >= 0);
+ assert_se(symlinkat("/def", fd, "parent") >= 0);
+ fd = safe_close(fd);
+
+ /* Make sure that when we chase a symlink parent directory, that we chase the parent directory of the
+ * symlink target and not the symlink itself. But if we add CHASE_NOFOLLOW, we get the parent
+ * directory of the symlink itself. */
+
+ assert_se(chaseat(tfd, "chase/parent", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, &fd) >= 0);
+ assert_se(faccessat(fd, "def", F_OK, 0) >= 0);
+ assert_se(streq(result, "def"));
+ fd = safe_close(fd);
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_PARENT|CHASE_NOFOLLOW, &result, &fd) >= 0);
+ assert_se(faccessat(fd, "parent", F_OK, AT_SYMLINK_NOFOLLOW) >= 0);
+ assert_se(streq(result, "chase/parent"));
+ fd = safe_close(fd);
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, "chase", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, &fd) >= 0);
+ assert_se(faccessat(fd, "chase", F_OK, 0) >= 0);
+ assert_se(streq(result, "chase"));
+ fd = safe_close(fd);
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, "/", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
+ assert_se(streq(result, "."));
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, ".", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
+ assert_se(streq(result, "."));
+ result = mfree(result);
+
+ /* Test CHASE_MKDIR_0755 */
+
+ assert_se(chaseat(tfd, "m/k/d/i/r", CHASE_MKDIR_0755|CHASE_NONEXISTENT, &result, NULL) >= 0);
+ assert_se(faccessat(tfd, "m/k/d/i", F_OK, 0) >= 0);
+ assert_se(RET_NERRNO(faccessat(tfd, "m/k/d/i/r", F_OK, 0)) == -ENOENT);
+ assert_se(streq(result, "m/k/d/i/r"));
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, "m/../q", CHASE_MKDIR_0755|CHASE_NONEXISTENT, &result, NULL) >= 0);
+ assert_se(faccessat(tfd, "m", F_OK, 0) >= 0);
+ assert_se(RET_NERRNO(faccessat(tfd, "q", F_OK, 0)) == -ENOENT);
+ assert_se(streq(result, "q"));
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, "i/../p", CHASE_MKDIR_0755, NULL, NULL) == -ENOENT);
+
+ /* Test CHASE_FILENAME */
+
+ assert_se(chaseat(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_PARENT|CHASE_NOFOLLOW|CHASE_EXTRACT_FILENAME, &result, &fd) >= 0);
+ assert_se(faccessat(fd, result, F_OK, AT_SYMLINK_NOFOLLOW) >= 0);
+ assert_se(streq(result, "parent"));
+ fd = safe_close(fd);
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, "chase", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, &fd) >= 0);
+ assert_se(faccessat(fd, result, F_OK, 0) >= 0);
+ assert_se(streq(result, "chase"));
+ fd = safe_close(fd);
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, "/", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, NULL) >= 0);
+ assert_se(streq(result, "."));
+ result = mfree(result);
+
+ assert_se(chaseat(tfd, ".", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, NULL) >= 0);
+ assert_se(streq(result, "."));
+ result = mfree(result);
+
+ /* Test chase_and_openat() */
+
+ fd = chase_and_openat(tfd, "o/p/e/n/f/i/l/e", CHASE_MKDIR_0755, O_CREAT|O_EXCL|O_CLOEXEC, NULL);
+ assert_se(fd >= 0);
+ assert_se(fd_verify_regular(fd) >= 0);
+ fd = safe_close(fd);
+
+ fd = chase_and_openat(tfd, "o/p/e/n/d/i/r", CHASE_MKDIR_0755, O_DIRECTORY|O_CREAT|O_EXCL|O_CLOEXEC, NULL);
+ assert_se(fd >= 0);
+ assert_se(fd_verify_directory(fd) >= 0);
+ fd = safe_close(fd);
+
+ /* Test chase_and_openatdir() */
+
+ assert_se(chase_and_opendirat(tfd, "o/p/e/n/d/i", 0, &result, &dir) >= 0);
+ FOREACH_DIRENT(de, dir, assert_not_reached())
+ assert_se(streq(de->d_name, "r"));
+ assert_se(streq(result, "o/p/e/n/d/i"));
+ result = mfree(result);
+
+ /* Test chase_and_statat() */
+
+ assert_se(chase_and_statat(tfd, "o/p", 0, &result, &st) >= 0);
+ assert_se(stat_verify_directory(&st) >= 0);
+ assert_se(streq(result, "o/p"));
+ result = mfree(result);
+
+ /* Test chase_and_accessat() */
+
+ assert_se(chase_and_accessat(tfd, "o/p/e", 0, F_OK, &result) >= 0);
+ assert_se(streq(result, "o/p/e"));
+ result = mfree(result);
+
+ /* Test chase_and_fopenat_unlocked() */
+
+ assert_se(chase_and_fopenat_unlocked(tfd, "o/p/e/n/f/i/l/e", 0, "re", &result, &f) >= 0);
+ assert_se(fread(&(char[1]) {}, 1, 1, f) == 0);
+ assert_se(feof(f));
+ f = safe_fclose(f);
+ assert_se(streq(result, "o/p/e/n/f/i/l/e"));
+ result = mfree(result);
+
+ /* Test chase_and_unlinkat() */
+
+ assert_se(chase_and_unlinkat(tfd, "o/p/e/n/f/i/l/e", 0, 0, &result) >= 0);
+ assert_se(streq(result, "o/p/e/n/f/i/l/e"));
+ result = mfree(result);
+
+ /* Test chase_and_open_parent_at() */
+
+ assert_se((fd = chase_and_open_parent_at(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_NOFOLLOW, &result)) >= 0);
+ assert_se(faccessat(fd, result, F_OK, AT_SYMLINK_NOFOLLOW) >= 0);
+ assert_se(streq(result, "parent"));
+ fd = safe_close(fd);
+ result = mfree(result);
+
+ assert_se((fd = chase_and_open_parent_at(tfd, "chase", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0);
+ assert_se(faccessat(fd, result, F_OK, 0) >= 0);
+ assert_se(streq(result, "chase"));
+ fd = safe_close(fd);
+ result = mfree(result);
+
+ assert_se((fd = chase_and_open_parent_at(tfd, "/", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0);
+ assert_se(streq(result, "."));
+ fd = safe_close(fd);
+ result = mfree(result);
+
+ assert_se((fd = chase_and_open_parent_at(tfd, ".", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0);
+ assert_se(streq(result, "."));
+ fd = safe_close(fd);
+ result = mfree(result);
+}
+
+static int intro(void) {
+ arg_test_dir = saved_argv[1];
+ return EXIT_SUCCESS;
+}
+
+DEFINE_TEST_MAIN_WITH_INTRO(LOG_INFO, intro);
#include <unistd.h>
#include "alloc-util.h"
-#include "chase.h"
#include "copy.h"
#include "dirent-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
-#include "id128-util.h"
#include "macro.h"
#include "mkdir.h"
#include "path-util.h"
#include "process-util.h"
#include "random-util.h"
#include "rm-rf.h"
+#include "stat-util.h"
#include "stdio-util.h"
#include "string-util.h"
#include "strv.h"
static const char *arg_test_dir = NULL;
-TEST(chase) {
- _cleanup_free_ char *result = NULL, *pwd = NULL;
- _cleanup_close_ int pfd = -EBADF;
- char *temp;
- const char *top, *p, *pslash, *q, *qslash;
- struct stat st;
- int r;
-
- temp = strjoina(arg_test_dir ?: "/tmp", "/test-chase.XXXXXX");
- assert_se(mkdtemp(temp));
-
- top = strjoina(temp, "/top");
- assert_se(mkdir(top, 0700) >= 0);
-
- p = strjoina(top, "/dot");
- if (symlink(".", p) < 0) {
- assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM));
- log_tests_skipped_errno(errno, "symlink() not possible");
- goto cleanup;
- };
-
- p = strjoina(top, "/dotdot");
- assert_se(symlink("..", p) >= 0);
-
- p = strjoina(top, "/dotdota");
- assert_se(symlink("../a", p) >= 0);
-
- p = strjoina(temp, "/a");
- assert_se(symlink("b", p) >= 0);
-
- p = strjoina(temp, "/b");
- assert_se(symlink("/usr", p) >= 0);
-
- p = strjoina(temp, "/start");
- assert_se(symlink("top/dot/dotdota", p) >= 0);
-
- /* Paths that use symlinks underneath the "root" */
-
- r = chase(p, NULL, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, "/usr"));
- result = mfree(result);
-
- pslash = strjoina(p, "/");
- r = chase(pslash, NULL, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, "/usr/"));
- result = mfree(result);
-
- r = chase(p, temp, 0, &result, NULL);
- assert_se(r == -ENOENT);
-
- r = chase(pslash, temp, 0, &result, NULL);
- assert_se(r == -ENOENT);
-
- q = strjoina(temp, "/usr");
-
- r = chase(p, temp, CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == 0);
- assert_se(path_equal(result, q));
- result = mfree(result);
-
- qslash = strjoina(q, "/");
-
- r = chase(pslash, temp, CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == 0);
- assert_se(path_equal(result, qslash));
- result = mfree(result);
-
- assert_se(mkdir(q, 0700) >= 0);
-
- r = chase(p, temp, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, q));
- result = mfree(result);
-
- r = chase(pslash, temp, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, qslash));
- result = mfree(result);
-
- p = strjoina(temp, "/slash");
- assert_se(symlink("/", p) >= 0);
-
- r = chase(p, NULL, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, "/"));
- result = mfree(result);
-
- r = chase(p, temp, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, temp));
- result = mfree(result);
-
- /* Paths that would "escape" outside of the "root" */
-
- p = strjoina(temp, "/6dots");
- assert_se(symlink("../../..", p) >= 0);
-
- r = chase(p, temp, 0, &result, NULL);
- assert_se(r > 0 && path_equal(result, temp));
- result = mfree(result);
-
- p = strjoina(temp, "/6dotsusr");
- assert_se(symlink("../../../usr", p) >= 0);
-
- r = chase(p, temp, 0, &result, NULL);
- assert_se(r > 0 && path_equal(result, q));
- result = mfree(result);
-
- p = strjoina(temp, "/top/8dotsusr");
- assert_se(symlink("../../../../usr", p) >= 0);
-
- r = chase(p, temp, 0, &result, NULL);
- assert_se(r > 0 && path_equal(result, q));
- result = mfree(result);
-
- /* Paths that contain repeated slashes */
-
- p = strjoina(temp, "/slashslash");
- assert_se(symlink("///usr///", p) >= 0);
-
- r = chase(p, NULL, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, "/usr"));
- assert_se(streq(result, "/usr")); /* we guarantee that we drop redundant slashes */
- result = mfree(result);
-
- r = chase(p, temp, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, q));
- result = mfree(result);
-
- /* Paths underneath the "root" with different UIDs while using CHASE_SAFE */
-
- if (geteuid() == 0) {
- p = strjoina(temp, "/user");
- assert_se(mkdir(p, 0755) >= 0);
- assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0);
-
- q = strjoina(temp, "/user/root");
- assert_se(mkdir(q, 0755) >= 0);
-
- p = strjoina(q, "/link");
- assert_se(symlink("/", p) >= 0);
-
- /* Fail when user-owned directories contain root-owned subdirectories. */
- r = chase(p, temp, CHASE_SAFE, &result, NULL);
- assert_se(r == -ENOLINK);
- result = mfree(result);
-
- /* Allow this when the user-owned directories are all in the "root". */
- r = chase(p, q, CHASE_SAFE, &result, NULL);
- assert_se(r > 0);
- result = mfree(result);
- }
-
- /* Paths using . */
-
- r = chase("/etc/./.././", NULL, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(result, "/"));
- result = mfree(result);
-
- r = chase("/etc/./.././", "/etc", 0, &result, NULL);
- assert_se(r > 0 && path_equal(result, "/etc"));
- result = mfree(result);
-
- r = chase("/../.././//../../etc", NULL, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(streq(result, "/etc"));
- result = mfree(result);
-
- r = chase("/../.././//../../test-chase.fsldajfl", NULL, CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == 0);
- assert_se(streq(result, "/test-chase.fsldajfl"));
- result = mfree(result);
-
- r = chase("/../.././//../../etc", "/", CHASE_PREFIX_ROOT, &result, NULL);
- assert_se(r > 0);
- assert_se(streq(result, "/etc"));
- result = mfree(result);
-
- r = chase("/../.././//../../test-chase.fsldajfl", "/", CHASE_PREFIX_ROOT|CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == 0);
- assert_se(streq(result, "/test-chase.fsldajfl"));
- result = mfree(result);
-
- r = chase("/etc/machine-id/foo", NULL, 0, &result, NULL);
- assert_se(IN_SET(r, -ENOTDIR, -ENOENT));
- result = mfree(result);
-
- /* Path that loops back to self */
-
- p = strjoina(temp, "/recursive-symlink");
- assert_se(symlink("recursive-symlink", p) >= 0);
- r = chase(p, NULL, 0, &result, NULL);
- assert_se(r == -ELOOP);
-
- /* Path which doesn't exist */
-
- p = strjoina(temp, "/idontexist");
- r = chase(p, NULL, 0, &result, NULL);
- assert_se(r == -ENOENT);
-
- r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == 0);
- assert_se(path_equal(result, p));
- result = mfree(result);
-
- p = strjoina(temp, "/idontexist/meneither");
- r = chase(p, NULL, 0, &result, NULL);
- assert_se(r == -ENOENT);
-
- r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == 0);
- assert_se(path_equal(result, p));
- result = mfree(result);
-
- /* Relative paths */
-
- assert_se(safe_getcwd(&pwd) >= 0);
-
- assert_se(chdir(temp) >= 0);
-
- p = "this/is/a/relative/path";
- r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == 0);
-
- p = strjoina(temp, "/", p);
- assert_se(path_equal(result, p));
- result = mfree(result);
-
- p = "this/is/a/relative/path";
- r = chase(p, temp, CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == 0);
-
- p = strjoina(temp, "/", p);
- assert_se(path_equal(result, p));
- result = mfree(result);
-
- assert_se(chdir(pwd) >= 0);
-
- /* Path which doesn't exist, but contains weird stuff */
-
- p = strjoina(temp, "/idontexist/..");
- r = chase(p, NULL, 0, &result, NULL);
- assert_se(r == -ENOENT);
-
- r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL);
- assert_se(r == -ENOENT);
-
- p = strjoina(temp, "/target");
- q = strjoina(temp, "/top");
- assert_se(symlink(q, p) >= 0);
- p = strjoina(temp, "/target/idontexist");
- r = chase(p, NULL, 0, &result, NULL);
- assert_se(r == -ENOENT);
-
- if (geteuid() == 0) {
- p = strjoina(temp, "/priv1");
- assert_se(mkdir(p, 0755) >= 0);
-
- q = strjoina(p, "/priv2");
- assert_se(mkdir(q, 0755) >= 0);
-
- assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
-
- assert_se(chown(q, UID_NOBODY, GID_NOBODY) >= 0);
- assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
-
- assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0);
- assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
-
- assert_se(chown(q, 0, 0) >= 0);
- assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK);
-
- assert_se(rmdir(q) >= 0);
- assert_se(symlink("/etc/passwd", q) >= 0);
- assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK);
-
- assert_se(chown(p, 0, 0) >= 0);
- assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
- }
-
- p = strjoina(temp, "/machine-id-test");
- assert_se(symlink("/usr/../etc/./machine-id", p) >= 0);
-
- r = chase(p, NULL, 0, NULL, &pfd);
- if (r != -ENOENT && sd_id128_get_machine(NULL) >= 0) {
- _cleanup_close_ int fd = -EBADF;
- sd_id128_t a, b;
-
- assert_se(pfd >= 0);
-
- fd = fd_reopen(pfd, O_RDONLY|O_CLOEXEC);
- assert_se(fd >= 0);
- safe_close(pfd);
-
- assert_se(id128_read_fd(fd, ID128_FORMAT_PLAIN, &a) >= 0);
- assert_se(sd_id128_get_machine(&b) >= 0);
- assert_se(sd_id128_equal(a, b));
- }
-
- assert_se(lstat(p, &st) >= 0);
- r = chase_and_unlink(p, NULL, 0, 0, &result);
- assert_se(r == 0);
- assert_se(path_equal(result, p));
- result = mfree(result);
- assert_se(lstat(p, &st) == -1 && errno == ENOENT);
-
- /* Test CHASE_NOFOLLOW */
-
- p = strjoina(temp, "/target");
- q = strjoina(temp, "/symlink");
- assert_se(symlink(p, q) >= 0);
- r = chase(q, NULL, CHASE_NOFOLLOW, &result, &pfd);
- assert_se(r >= 0);
- assert_se(pfd >= 0);
- assert_se(path_equal(result, q));
- assert_se(fstat(pfd, &st) >= 0);
- assert_se(S_ISLNK(st.st_mode));
- result = mfree(result);
- pfd = safe_close(pfd);
-
- /* s1 -> s2 -> nonexistent */
- q = strjoina(temp, "/s1");
- assert_se(symlink("s2", q) >= 0);
- p = strjoina(temp, "/s2");
- assert_se(symlink("nonexistent", p) >= 0);
- r = chase(q, NULL, CHASE_NOFOLLOW, &result, &pfd);
- assert_se(r >= 0);
- assert_se(pfd >= 0);
- assert_se(path_equal(result, q));
- assert_se(fstat(pfd, &st) >= 0);
- assert_se(S_ISLNK(st.st_mode));
- result = mfree(result);
- pfd = safe_close(pfd);
-
- /* Test CHASE_STEP */
-
- p = strjoina(temp, "/start");
- r = chase(p, NULL, CHASE_STEP, &result, NULL);
- assert_se(r == 0);
- p = strjoina(temp, "/top/dot/dotdota");
- assert_se(streq(p, result));
- result = mfree(result);
-
- r = chase(p, NULL, CHASE_STEP, &result, NULL);
- assert_se(r == 0);
- p = strjoina(temp, "/top/dotdota");
- assert_se(streq(p, result));
- result = mfree(result);
-
- r = chase(p, NULL, CHASE_STEP, &result, NULL);
- assert_se(r == 0);
- p = strjoina(temp, "/top/../a");
- assert_se(streq(p, result));
- result = mfree(result);
-
- r = chase(p, NULL, CHASE_STEP, &result, NULL);
- assert_se(r == 0);
- p = strjoina(temp, "/a");
- assert_se(streq(p, result));
- result = mfree(result);
-
- r = chase(p, NULL, CHASE_STEP, &result, NULL);
- assert_se(r == 0);
- p = strjoina(temp, "/b");
- assert_se(streq(p, result));
- result = mfree(result);
-
- r = chase(p, NULL, CHASE_STEP, &result, NULL);
- assert_se(r == 0);
- assert_se(streq("/usr", result));
- result = mfree(result);
-
- r = chase("/usr", NULL, CHASE_STEP, &result, NULL);
- assert_se(r > 0);
- assert_se(streq("/usr", result));
- result = mfree(result);
-
- /* Make sure that symlinks in the "root" path are not resolved, but those below are */
- p = strjoina("/etc/..", temp, "/self");
- assert_se(symlink(".", p) >= 0);
- q = strjoina(p, "/top/dot/dotdota");
- r = chase(q, p, 0, &result, NULL);
- assert_se(r > 0);
- assert_se(path_equal(path_startswith(result, p), "usr"));
- result = mfree(result);
-
- /* Test CHASE_PROHIBIT_SYMLINKS */
-
- assert_se(chase("top/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
- assert_se(chase("top/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
- assert_se(chase("top/dotdot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
- assert_se(chase("top/dotdot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
- assert_se(chase("top/dot/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
- assert_se(chase("top/dot/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
-
- cleanup:
- assert_se(rm_rf(temp, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
-}
-
-TEST(chaseat) {
- _cleanup_(rm_rf_physical_and_freep) char *t = NULL;
- _cleanup_close_ int tfd = -EBADF, fd = -EBADF;
- _cleanup_free_ char *result = NULL;
- _cleanup_closedir_ DIR *dir = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- struct stat st;
- const char *p;
-
- assert_se((tfd = mkdtemp_open(NULL, 0, &t)) >= 0);
-
- /* Test that AT_FDCWD with CHASE_AT_RESOLVE_IN_ROOT resolves against / and not the current working
- * directory. */
-
- assert_se(symlinkat("/usr", tfd, "abc") >= 0);
-
- p = strjoina(t, "/abc");
- assert_se(chaseat(AT_FDCWD, p, CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
- assert_se(streq(result, "/usr"));
- result = mfree(result);
-
- /* Test that absolute path or not are the same when resolving relative to a directory file
- * descriptor and that we always get a relative path back. */
-
- assert_se(fd = openat(tfd, "def", O_CREAT|O_CLOEXEC, 0700) >= 0);
- fd = safe_close(fd);
- assert_se(symlinkat("/def", tfd, "qed") >= 0);
- assert_se(chaseat(tfd, "qed", CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
- assert_se(streq(result, "def"));
- result = mfree(result);
- assert_se(chaseat(tfd, "/qed", CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
- assert_se(streq(result, "def"));
- result = mfree(result);
-
- /* Valid directory file descriptor without CHASE_AT_RESOLVE_IN_ROOT should resolve symlinks against
- * host's root. */
- assert_se(chaseat(tfd, "/qed", 0, NULL, NULL) == -ENOENT);
-
- /* Test CHASE_PARENT */
-
- assert_se((fd = open_mkdir_at(tfd, "chase", O_CLOEXEC, 0755)) >= 0);
- assert_se(symlinkat("/def", fd, "parent") >= 0);
- fd = safe_close(fd);
-
- /* Make sure that when we chase a symlink parent directory, that we chase the parent directory of the
- * symlink target and not the symlink itself. But if we add CHASE_NOFOLLOW, we get the parent
- * directory of the symlink itself. */
-
- assert_se(chaseat(tfd, "chase/parent", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, &fd) >= 0);
- assert_se(faccessat(fd, "def", F_OK, 0) >= 0);
- assert_se(streq(result, "def"));
- fd = safe_close(fd);
- result = mfree(result);
-
- assert_se(chaseat(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_PARENT|CHASE_NOFOLLOW, &result, &fd) >= 0);
- assert_se(faccessat(fd, "parent", F_OK, AT_SYMLINK_NOFOLLOW) >= 0);
- assert_se(streq(result, "chase/parent"));
- fd = safe_close(fd);
- result = mfree(result);
-
- assert_se(chaseat(tfd, "chase", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, &fd) >= 0);
- assert_se(faccessat(fd, "chase", F_OK, 0) >= 0);
- assert_se(streq(result, "chase"));
- fd = safe_close(fd);
- result = mfree(result);
-
- assert_se(chaseat(tfd, "/", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
- assert_se(streq(result, "."));
- result = mfree(result);
-
- assert_se(chaseat(tfd, ".", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0);
- assert_se(streq(result, "."));
- result = mfree(result);
-
- /* Test CHASE_MKDIR_0755 */
-
- assert_se(chaseat(tfd, "m/k/d/i/r", CHASE_MKDIR_0755|CHASE_NONEXISTENT, &result, NULL) >= 0);
- assert_se(faccessat(tfd, "m/k/d/i", F_OK, 0) >= 0);
- assert_se(RET_NERRNO(faccessat(tfd, "m/k/d/i/r", F_OK, 0)) == -ENOENT);
- assert_se(streq(result, "m/k/d/i/r"));
- result = mfree(result);
-
- assert_se(chaseat(tfd, "m/../q", CHASE_MKDIR_0755|CHASE_NONEXISTENT, &result, NULL) >= 0);
- assert_se(faccessat(tfd, "m", F_OK, 0) >= 0);
- assert_se(RET_NERRNO(faccessat(tfd, "q", F_OK, 0)) == -ENOENT);
- assert_se(streq(result, "q"));
- result = mfree(result);
-
- assert_se(chaseat(tfd, "i/../p", CHASE_MKDIR_0755, NULL, NULL) == -ENOENT);
-
- /* Test CHASE_FILENAME */
-
- assert_se(chaseat(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_PARENT|CHASE_NOFOLLOW|CHASE_EXTRACT_FILENAME, &result, &fd) >= 0);
- assert_se(faccessat(fd, result, F_OK, AT_SYMLINK_NOFOLLOW) >= 0);
- assert_se(streq(result, "parent"));
- fd = safe_close(fd);
- result = mfree(result);
-
- assert_se(chaseat(tfd, "chase", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, &fd) >= 0);
- assert_se(faccessat(fd, result, F_OK, 0) >= 0);
- assert_se(streq(result, "chase"));
- fd = safe_close(fd);
- result = mfree(result);
-
- assert_se(chaseat(tfd, "/", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, NULL) >= 0);
- assert_se(streq(result, "."));
- result = mfree(result);
-
- assert_se(chaseat(tfd, ".", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, NULL) >= 0);
- assert_se(streq(result, "."));
- result = mfree(result);
-
- /* Test chase_and_openat() */
-
- fd = chase_and_openat(tfd, "o/p/e/n/f/i/l/e", CHASE_MKDIR_0755, O_CREAT|O_EXCL|O_CLOEXEC, NULL);
- assert_se(fd >= 0);
- assert_se(fd_verify_regular(fd) >= 0);
- fd = safe_close(fd);
-
- fd = chase_and_openat(tfd, "o/p/e/n/d/i/r", CHASE_MKDIR_0755, O_DIRECTORY|O_CREAT|O_EXCL|O_CLOEXEC, NULL);
- assert_se(fd >= 0);
- assert_se(fd_verify_directory(fd) >= 0);
- fd = safe_close(fd);
-
- /* Test chase_and_openatdir() */
-
- assert_se(chase_and_opendirat(tfd, "o/p/e/n/d/i", 0, &result, &dir) >= 0);
- FOREACH_DIRENT(de, dir, assert_not_reached())
- assert_se(streq(de->d_name, "r"));
- assert_se(streq(result, "o/p/e/n/d/i"));
- result = mfree(result);
-
- /* Test chase_and_statat() */
-
- assert_se(chase_and_statat(tfd, "o/p", 0, &result, &st) >= 0);
- assert_se(stat_verify_directory(&st) >= 0);
- assert_se(streq(result, "o/p"));
- result = mfree(result);
-
- /* Test chase_and_accessat() */
-
- assert_se(chase_and_accessat(tfd, "o/p/e", 0, F_OK, &result) >= 0);
- assert_se(streq(result, "o/p/e"));
- result = mfree(result);
-
- /* Test chase_and_fopenat_unlocked() */
-
- assert_se(chase_and_fopenat_unlocked(tfd, "o/p/e/n/f/i/l/e", 0, "re", &result, &f) >= 0);
- assert_se(fread(&(char[1]) {}, 1, 1, f) == 0);
- assert_se(feof(f));
- f = safe_fclose(f);
- assert_se(streq(result, "o/p/e/n/f/i/l/e"));
- result = mfree(result);
-
- /* Test chase_and_unlinkat() */
-
- assert_se(chase_and_unlinkat(tfd, "o/p/e/n/f/i/l/e", 0, 0, &result) >= 0);
- assert_se(streq(result, "o/p/e/n/f/i/l/e"));
- result = mfree(result);
-
- /* Test chase_and_open_parent_at() */
-
- assert_se((fd = chase_and_open_parent_at(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_NOFOLLOW, &result)) >= 0);
- assert_se(faccessat(fd, result, F_OK, AT_SYMLINK_NOFOLLOW) >= 0);
- assert_se(streq(result, "parent"));
- fd = safe_close(fd);
- result = mfree(result);
-
- assert_se((fd = chase_and_open_parent_at(tfd, "chase", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0);
- assert_se(faccessat(fd, result, F_OK, 0) >= 0);
- assert_se(streq(result, "chase"));
- fd = safe_close(fd);
- result = mfree(result);
-
- assert_se((fd = chase_and_open_parent_at(tfd, "/", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0);
- assert_se(streq(result, "."));
- fd = safe_close(fd);
- result = mfree(result);
-
- assert_se((fd = chase_and_open_parent_at(tfd, ".", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0);
- assert_se(streq(result, "."));
- fd = safe_close(fd);
- result = mfree(result);
-}
-
TEST(readlink_and_make_absolute) {
const char *tempdir, *name, *name2, *name_alias;
_cleanup_free_ char *r1 = NULL, *r2 = NULL, *pwd = NULL;
projects / thirdparty / systemd.git / commitdiff
