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-rw-r--r--src/test/test-fs-util.c857
1 files changed, 857 insertions, 0 deletions
diff --git a/src/test/test-fs-util.c b/src/test/test-fs-util.c
new file mode 100644
index 0000000..d1f9252
--- /dev/null
+++ b/src/test/test-fs-util.c
@@ -0,0 +1,857 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "fs-util.h"
+#include "id128-util.h"
+#include "macro.h"
+#include "mkdir.h"
+#include "path-util.h"
+#include "rm-rf.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+#include "umask-util.h"
+#include "user-util.h"
+#include "util.h"
+#include "virt.h"
+
+static const char *arg_test_dir = NULL;
+
+static void test_chase_symlinks(void) {
+ _cleanup_free_ char *result = NULL;
+ char *temp;
+ const char *top, *p, *pslash, *q, *qslash;
+ struct stat st;
+ int r, pfd;
+
+ log_info("/* %s */", __func__);
+
+ 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_symlinks(p, NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/usr"));
+ result = mfree(result);
+
+ pslash = strjoina(p, "/");
+ r = chase_symlinks(pslash, NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/usr/"));
+ result = mfree(result);
+
+ r = chase_symlinks(p, temp, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ r = chase_symlinks(pslash, temp, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ q = strjoina(temp, "/usr");
+
+ r = chase_symlinks(p, temp, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(path_equal(result, q));
+ result = mfree(result);
+
+ qslash = strjoina(q, "/");
+
+ r = chase_symlinks(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_symlinks(p, temp, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, q));
+ result = mfree(result);
+
+ r = chase_symlinks(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_symlinks(p, NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/"));
+ result = mfree(result);
+
+ r = chase_symlinks(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_symlinks(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_symlinks(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_symlinks(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_symlinks(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_symlinks(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_symlinks(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_symlinks(p, q, CHASE_SAFE, &result, NULL);
+ assert_se(r > 0);
+ result = mfree(result);
+ }
+
+ /* Paths using . */
+
+ r = chase_symlinks("/etc/./.././", NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(result, "/"));
+ result = mfree(result);
+
+ r = chase_symlinks("/etc/./.././", "/etc", 0, &result, NULL);
+ assert_se(r > 0 && path_equal(result, "/etc"));
+ result = mfree(result);
+
+ r = chase_symlinks("/../.././//../../etc", NULL, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(streq(result, "/etc"));
+ result = mfree(result);
+
+ r = chase_symlinks("/../.././//../../test-chase.fsldajfl", NULL, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(streq(result, "/test-chase.fsldajfl"));
+ result = mfree(result);
+
+ r = chase_symlinks("/../.././//../../etc", "/", CHASE_PREFIX_ROOT, &result, NULL);
+ assert_se(r > 0);
+ assert_se(streq(result, "/etc"));
+ result = mfree(result);
+
+ r = chase_symlinks("/../.././//../../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_symlinks("/etc/machine-id/foo", NULL, 0, &result, NULL);
+ assert_se(r == -ENOTDIR);
+ result = mfree(result);
+
+ /* Path that loops back to self */
+
+ p = strjoina(temp, "/recursive-symlink");
+ assert_se(symlink("recursive-symlink", p) >= 0);
+ r = chase_symlinks(p, NULL, 0, &result, NULL);
+ assert_se(r == -ELOOP);
+
+ /* Path which doesn't exist */
+
+ p = strjoina(temp, "/idontexist");
+ r = chase_symlinks(p, NULL, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ r = chase_symlinks(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_symlinks(p, NULL, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result, NULL);
+ assert_se(r == 0);
+ assert_se(path_equal(result, p));
+ result = mfree(result);
+
+ /* Path which doesn't exist, but contains weird stuff */
+
+ p = strjoina(temp, "/idontexist/..");
+ r = chase_symlinks(p, NULL, 0, &result, NULL);
+ assert_se(r == -ENOENT);
+
+ r = chase_symlinks(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_symlinks(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_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
+
+ assert_se(chown(q, UID_NOBODY, GID_NOBODY) >= 0);
+ assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
+
+ assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0);
+ assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
+
+ assert_se(chown(q, 0, 0) >= 0);
+ assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK);
+
+ assert_se(rmdir(q) >= 0);
+ assert_se(symlink("/etc/passwd", q) >= 0);
+ assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK);
+
+ assert_se(chown(p, 0, 0) >= 0);
+ assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
+ }
+
+ p = strjoina(temp, "/machine-id-test");
+ assert_se(symlink("/usr/../etc/./machine-id", p) >= 0);
+
+ r = chase_symlinks(p, NULL, 0, NULL, &pfd);
+ if (r != -ENOENT) {
+ _cleanup_close_ int fd = -1;
+ 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_PLAIN, &a) >= 0);
+ assert_se(sd_id128_get_machine(&b) >= 0);
+ assert_se(sd_id128_equal(a, b));
+ }
+
+ /* Test CHASE_NOFOLLOW */
+
+ p = strjoina(temp, "/target");
+ q = strjoina(temp, "/symlink");
+ assert_se(symlink(p, q) >= 0);
+ r = chase_symlinks(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);
+
+ /* 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_symlinks(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);
+
+ /* Test CHASE_ONE */
+
+ p = strjoina(temp, "/start");
+ r = chase_symlinks(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_symlinks(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_symlinks(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_symlinks(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ p = strjoina(temp, "/a");
+ assert_se(streq(p, result));
+ result = mfree(result);
+
+ r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ p = strjoina(temp, "/b");
+ assert_se(streq(p, result));
+ result = mfree(result);
+
+ r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL);
+ assert_se(r == 0);
+ assert_se(streq("/usr", result));
+ result = mfree(result);
+
+ r = chase_symlinks("/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_symlinks(q, p, 0, &result, NULL);
+ assert_se(r > 0);
+ assert_se(path_equal(path_startswith(result, p), "usr"));
+ result = mfree(result);
+
+ cleanup:
+ assert_se(rm_rf(temp, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
+}
+
+static void test_unlink_noerrno(void) {
+ char *name;
+ int fd;
+
+ log_info("/* %s */", __func__);
+
+ name = strjoina(arg_test_dir ?: "/tmp", "/test-close_nointr.XXXXXX");
+ fd = mkostemp_safe(name);
+ assert_se(fd >= 0);
+ assert_se(close_nointr(fd) >= 0);
+
+ {
+ PROTECT_ERRNO;
+ errno = 42;
+ assert_se(unlink_noerrno(name) >= 0);
+ assert_se(errno == 42);
+ assert_se(unlink_noerrno(name) < 0);
+ assert_se(errno == 42);
+ }
+}
+
+static void test_readlink_and_make_absolute(void) {
+ const char *tempdir, *name, *name2, *name_alias;
+ _cleanup_free_ char *r1 = NULL, *r2 = NULL, *pwd = NULL;
+
+ log_info("/* %s */", __func__);
+
+ tempdir = strjoina(arg_test_dir ?: "/tmp", "/test-readlink_and_make_absolute");
+ name = strjoina(tempdir, "/original");
+ name2 = "test-readlink_and_make_absolute/original";
+ name_alias = strjoina(arg_test_dir ?: "/tmp", "/test-readlink_and_make_absolute-alias");
+
+ assert_se(mkdir_safe(tempdir, 0755, getuid(), getgid(), MKDIR_WARN_MODE) >= 0);
+ assert_se(touch(name) >= 0);
+
+ if (symlink(name, name_alias) < 0) {
+ assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM));
+ log_tests_skipped_errno(errno, "symlink() not possible");
+ } else {
+ assert_se(readlink_and_make_absolute(name_alias, &r1) >= 0);
+ assert_se(streq(r1, name));
+ assert_se(unlink(name_alias) >= 0);
+
+ assert_se(safe_getcwd(&pwd) >= 0);
+
+ assert_se(chdir(tempdir) >= 0);
+ assert_se(symlink(name2, name_alias) >= 0);
+ assert_se(readlink_and_make_absolute(name_alias, &r2) >= 0);
+ assert_se(streq(r2, name));
+ assert_se(unlink(name_alias) >= 0);
+
+ assert_se(chdir(pwd) >= 0);
+ }
+
+ assert_se(rm_rf(tempdir, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
+}
+
+static void test_get_files_in_directory(void) {
+ _cleanup_strv_free_ char **l = NULL, **t = NULL;
+
+ assert_se(get_files_in_directory(arg_test_dir ?: "/tmp", &l) >= 0);
+ assert_se(get_files_in_directory(".", &t) >= 0);
+ assert_se(get_files_in_directory(".", NULL) >= 0);
+}
+
+static void test_var_tmp(void) {
+ _cleanup_free_ char *tmpdir_backup = NULL, *temp_backup = NULL, *tmp_backup = NULL;
+ const char *tmp_dir = NULL, *t;
+
+ log_info("/* %s */", __func__);
+
+ t = getenv("TMPDIR");
+ if (t) {
+ tmpdir_backup = strdup(t);
+ assert_se(tmpdir_backup);
+ }
+
+ t = getenv("TEMP");
+ if (t) {
+ temp_backup = strdup(t);
+ assert_se(temp_backup);
+ }
+
+ t = getenv("TMP");
+ if (t) {
+ tmp_backup = strdup(t);
+ assert_se(tmp_backup);
+ }
+
+ assert_se(unsetenv("TMPDIR") >= 0);
+ assert_se(unsetenv("TEMP") >= 0);
+ assert_se(unsetenv("TMP") >= 0);
+
+ assert_se(var_tmp_dir(&tmp_dir) >= 0);
+ assert_se(streq(tmp_dir, "/var/tmp"));
+
+ assert_se(setenv("TMPDIR", "/tmp", true) >= 0);
+ assert_se(streq(getenv("TMPDIR"), "/tmp"));
+
+ assert_se(var_tmp_dir(&tmp_dir) >= 0);
+ assert_se(streq(tmp_dir, "/tmp"));
+
+ assert_se(setenv("TMPDIR", "/88_does_not_exist_88", true) >= 0);
+ assert_se(streq(getenv("TMPDIR"), "/88_does_not_exist_88"));
+
+ assert_se(var_tmp_dir(&tmp_dir) >= 0);
+ assert_se(streq(tmp_dir, "/var/tmp"));
+
+ if (tmpdir_backup) {
+ assert_se(setenv("TMPDIR", tmpdir_backup, true) >= 0);
+ assert_se(streq(getenv("TMPDIR"), tmpdir_backup));
+ }
+
+ if (temp_backup) {
+ assert_se(setenv("TEMP", temp_backup, true) >= 0);
+ assert_se(streq(getenv("TEMP"), temp_backup));
+ }
+
+ if (tmp_backup) {
+ assert_se(setenv("TMP", tmp_backup, true) >= 0);
+ assert_se(streq(getenv("TMP"), tmp_backup));
+ }
+}
+
+static void test_dot_or_dot_dot(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se(!dot_or_dot_dot(NULL));
+ assert_se(!dot_or_dot_dot(""));
+ assert_se(!dot_or_dot_dot("xxx"));
+ assert_se(dot_or_dot_dot("."));
+ assert_se(dot_or_dot_dot(".."));
+ assert_se(!dot_or_dot_dot(".foo"));
+ assert_se(!dot_or_dot_dot("..foo"));
+}
+
+static void test_access_fd(void) {
+ _cleanup_(rmdir_and_freep) char *p = NULL;
+ _cleanup_close_ int fd = -1;
+ const char *a;
+
+ log_info("/* %s */", __func__);
+
+ a = strjoina(arg_test_dir ?: "/tmp", "/access-fd.XXXXXX");
+ assert_se(mkdtemp_malloc(a, &p) >= 0);
+
+ fd = open(p, O_RDONLY|O_DIRECTORY|O_CLOEXEC);
+ assert_se(fd >= 0);
+
+ assert_se(access_fd(fd, R_OK) >= 0);
+ assert_se(access_fd(fd, F_OK) >= 0);
+ assert_se(access_fd(fd, W_OK) >= 0);
+
+ assert_se(fchmod(fd, 0000) >= 0);
+
+ assert_se(access_fd(fd, F_OK) >= 0);
+
+ if (geteuid() == 0) {
+ assert_se(access_fd(fd, R_OK) >= 0);
+ assert_se(access_fd(fd, W_OK) >= 0);
+ } else {
+ assert_se(access_fd(fd, R_OK) == -EACCES);
+ assert_se(access_fd(fd, W_OK) == -EACCES);
+ }
+}
+
+static void test_touch_file(void) {
+ uid_t test_uid, test_gid;
+ _cleanup_(rm_rf_physical_and_freep) char *p = NULL;
+ struct stat st;
+ const char *a;
+ usec_t test_mtime;
+ int r;
+
+ log_info("/* %s */", __func__);
+
+ test_uid = geteuid() == 0 ? 65534 : getuid();
+ test_gid = geteuid() == 0 ? 65534 : getgid();
+
+ test_mtime = usec_sub_unsigned(now(CLOCK_REALTIME), USEC_PER_WEEK);
+
+ a = strjoina(arg_test_dir ?: "/dev/shm", "/touch-file-XXXXXX");
+ assert_se(mkdtemp_malloc(a, &p) >= 0);
+
+ a = strjoina(p, "/regular");
+ r = touch_file(a, false, test_mtime, test_uid, test_gid, 0640);
+ if (r < 0) {
+ assert_se(IN_SET(r, -EINVAL, -ENOSYS, -ENOTTY, -EPERM));
+ log_tests_skipped_errno(errno, "touch_file() not possible");
+ return;
+ }
+
+ assert_se(lstat(a, &st) >= 0);
+ assert_se(st.st_uid == test_uid);
+ assert_se(st.st_gid == test_gid);
+ assert_se(S_ISREG(st.st_mode));
+ assert_se((st.st_mode & 0777) == 0640);
+ assert_se(timespec_load(&st.st_mtim) == test_mtime);
+
+ a = strjoina(p, "/dir");
+ assert_se(mkdir(a, 0775) >= 0);
+ assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
+ assert_se(lstat(a, &st) >= 0);
+ assert_se(st.st_uid == test_uid);
+ assert_se(st.st_gid == test_gid);
+ assert_se(S_ISDIR(st.st_mode));
+ assert_se((st.st_mode & 0777) == 0640);
+ assert_se(timespec_load(&st.st_mtim) == test_mtime);
+
+ a = strjoina(p, "/fifo");
+ assert_se(mkfifo(a, 0775) >= 0);
+ assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
+ assert_se(lstat(a, &st) >= 0);
+ assert_se(st.st_uid == test_uid);
+ assert_se(st.st_gid == test_gid);
+ assert_se(S_ISFIFO(st.st_mode));
+ assert_se((st.st_mode & 0777) == 0640);
+ assert_se(timespec_load(&st.st_mtim) == test_mtime);
+
+ a = strjoina(p, "/sock");
+ assert_se(mknod(a, 0775 | S_IFSOCK, 0) >= 0);
+ assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
+ assert_se(lstat(a, &st) >= 0);
+ assert_se(st.st_uid == test_uid);
+ assert_se(st.st_gid == test_gid);
+ assert_se(S_ISSOCK(st.st_mode));
+ assert_se((st.st_mode & 0777) == 0640);
+ assert_se(timespec_load(&st.st_mtim) == test_mtime);
+
+ if (geteuid() == 0) {
+ a = strjoina(p, "/bdev");
+ r = mknod(a, 0775 | S_IFBLK, makedev(0, 0));
+ if (r < 0 && errno == EPERM && detect_container() > 0) {
+ log_notice("Running in unprivileged container? Skipping remaining tests in %s", __func__);
+ return;
+ }
+ assert_se(r >= 0);
+ assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
+ assert_se(lstat(a, &st) >= 0);
+ assert_se(st.st_uid == test_uid);
+ assert_se(st.st_gid == test_gid);
+ assert_se(S_ISBLK(st.st_mode));
+ assert_se((st.st_mode & 0777) == 0640);
+ assert_se(timespec_load(&st.st_mtim) == test_mtime);
+
+ a = strjoina(p, "/cdev");
+ assert_se(mknod(a, 0775 | S_IFCHR, makedev(0, 0)) >= 0);
+ assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
+ assert_se(lstat(a, &st) >= 0);
+ assert_se(st.st_uid == test_uid);
+ assert_se(st.st_gid == test_gid);
+ assert_se(S_ISCHR(st.st_mode));
+ assert_se((st.st_mode & 0777) == 0640);
+ assert_se(timespec_load(&st.st_mtim) == test_mtime);
+ }
+
+ a = strjoina(p, "/lnk");
+ assert_se(symlink("target", a) >= 0);
+ assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
+ assert_se(lstat(a, &st) >= 0);
+ assert_se(st.st_uid == test_uid);
+ assert_se(st.st_gid == test_gid);
+ assert_se(S_ISLNK(st.st_mode));
+ assert_se(timespec_load(&st.st_mtim) == test_mtime);
+}
+
+static void test_unlinkat_deallocate(void) {
+ _cleanup_free_ char *p = NULL;
+ _cleanup_close_ int fd = -1;
+ struct stat st;
+
+ log_info("/* %s */", __func__);
+
+ assert_se(tempfn_random_child(arg_test_dir, "unlink-deallocation", &p) >= 0);
+
+ fd = open(p, O_WRONLY|O_CLOEXEC|O_CREAT|O_EXCL, 0600);
+ assert_se(fd >= 0);
+
+ assert_se(write(fd, "hallo\n", 6) == 6);
+
+ assert_se(fstat(fd, &st) >= 0);
+ assert_se(st.st_size == 6);
+ assert_se(st.st_blocks > 0);
+ assert_se(st.st_nlink == 1);
+
+ assert_se(unlinkat_deallocate(AT_FDCWD, p, UNLINK_ERASE) >= 0);
+
+ assert_se(fstat(fd, &st) >= 0);
+ assert_se(IN_SET(st.st_size, 0, 6)); /* depending on whether hole punching worked the size will be 6
+ (it worked) or 0 (we had to resort to truncation) */
+ assert_se(st.st_blocks == 0);
+ assert_se(st.st_nlink == 0);
+}
+
+static void test_fsync_directory_of_file(void) {
+ _cleanup_close_ int fd = -1;
+
+ log_info("/* %s */", __func__);
+
+ fd = open_tmpfile_unlinkable(arg_test_dir, O_RDWR);
+ assert_se(fd >= 0);
+
+ assert_se(fsync_directory_of_file(fd) >= 0);
+}
+
+static void test_rename_noreplace(void) {
+ static const char* const table[] = {
+ "/reg",
+ "/dir",
+ "/fifo",
+ "/socket",
+ "/symlink",
+ NULL
+ };
+
+ _cleanup_(rm_rf_physical_and_freep) char *z = NULL;
+ const char *j = NULL;
+ char **a, **b;
+
+ log_info("/* %s */", __func__);
+
+ if (arg_test_dir)
+ j = strjoina(arg_test_dir, "/testXXXXXX");
+ assert_se(mkdtemp_malloc(j, &z) >= 0);
+
+ j = strjoina(z, table[0]);
+ assert_se(touch(j) >= 0);
+
+ j = strjoina(z, table[1]);
+ assert_se(mkdir(j, 0777) >= 0);
+
+ j = strjoina(z, table[2]);
+ (void) mkfifo(j, 0777);
+
+ j = strjoina(z, table[3]);
+ (void) mknod(j, S_IFSOCK | 0777, 0);
+
+ j = strjoina(z, table[4]);
+ (void) symlink("foobar", j);
+
+ STRV_FOREACH(a, (char**) table) {
+ _cleanup_free_ char *x = NULL, *y = NULL;
+
+ x = strjoin(z, *a);
+ assert_se(x);
+
+ if (access(x, F_OK) < 0) {
+ assert_se(errno == ENOENT);
+ continue;
+ }
+
+ STRV_FOREACH(b, (char**) table) {
+ _cleanup_free_ char *w = NULL;
+
+ w = strjoin(z, *b);
+ assert_se(w);
+
+ if (access(w, F_OK) < 0) {
+ assert_se(errno == ENOENT);
+ continue;
+ }
+
+ assert_se(rename_noreplace(AT_FDCWD, x, AT_FDCWD, w) == -EEXIST);
+ }
+
+ y = strjoin(z, "/somethingelse");
+ assert_se(y);
+
+ assert_se(rename_noreplace(AT_FDCWD, x, AT_FDCWD, y) >= 0);
+ assert_se(rename_noreplace(AT_FDCWD, y, AT_FDCWD, x) >= 0);
+ }
+}
+
+static void test_chmod_and_chown(void) {
+ _cleanup_(rm_rf_physical_and_freep) char *d = NULL;
+ _unused_ _cleanup_umask_ mode_t u = umask(0000);
+ struct stat st;
+ const char *p;
+
+ if (geteuid() != 0)
+ return;
+
+ log_info("/* %s */", __func__);
+
+ assert_se(mkdtemp_malloc(NULL, &d) >= 0);
+
+ p = strjoina(d, "/reg");
+ assert_se(mknod(p, S_IFREG | 0123, 0) >= 0);
+
+ assert_se(chmod_and_chown(p, S_IFREG | 0321, 1, 2) >= 0);
+ assert_se(chmod_and_chown(p, S_IFDIR | 0555, 3, 4) == -EINVAL);
+
+ assert_se(lstat(p, &st) >= 0);
+ assert_se(S_ISREG(st.st_mode));
+ assert_se((st.st_mode & 07777) == 0321);
+
+ p = strjoina(d, "/dir");
+ assert_se(mkdir(p, 0123) >= 0);
+
+ assert_se(chmod_and_chown(p, S_IFDIR | 0321, 1, 2) >= 0);
+ assert_se(chmod_and_chown(p, S_IFREG | 0555, 3, 4) == -EINVAL);
+
+ assert_se(lstat(p, &st) >= 0);
+ assert_se(S_ISDIR(st.st_mode));
+ assert_se((st.st_mode & 07777) == 0321);
+
+ p = strjoina(d, "/lnk");
+ assert_se(symlink("idontexist", p) >= 0);
+
+ assert_se(chmod_and_chown(p, S_IFLNK | 0321, 1, 2) >= 0);
+ assert_se(chmod_and_chown(p, S_IFREG | 0555, 3, 4) == -EINVAL);
+ assert_se(chmod_and_chown(p, S_IFDIR | 0555, 3, 4) == -EINVAL);
+
+ assert_se(lstat(p, &st) >= 0);
+ assert_se(S_ISLNK(st.st_mode));
+}
+
+static void test_path_is_encrypted_one(const char *p, int expect) {
+ int r;
+
+ r = path_is_encrypted(p);
+ if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r)) /* This might fail, if btrfs is used and we run in a
+ * container. In that case we cannot resolve the device node paths that
+ * BTRFS_IOC_DEV_INFO returns, because the device nodes are unlikely to exist in
+ * the container. But if we can't stat() them we cannot determine the dev_t of
+ * them, and thus cannot figure out if they are enrypted. Hence let's just ignore
+ * ENOENT here. Also skip the test if we lack privileges. */
+ return;
+ assert_se(r >= 0);
+
+ log_info("%s encrypted: %s", p, yes_no(r));
+
+ assert_se(expect < 0 || ((r > 0) == (expect > 0)));
+}
+
+static void test_path_is_encrypted(void) {
+ int booted = sd_booted(); /* If this is run in build environments such as koji, /dev might be a
+ * reguar fs. Don't assume too much if not running under systemd. */
+
+ log_info("/* %s (sd_booted=%d)*/", __func__, booted);
+
+ test_path_is_encrypted_one("/home", -1);
+ test_path_is_encrypted_one("/var", -1);
+ test_path_is_encrypted_one("/", -1);
+ test_path_is_encrypted_one("/proc", false);
+ test_path_is_encrypted_one("/sys", false);
+ test_path_is_encrypted_one("/dev", booted > 0 ? false : -1);
+}
+
+int main(int argc, char *argv[]) {
+ test_setup_logging(LOG_INFO);
+
+ arg_test_dir = argv[1];
+
+ test_chase_symlinks();
+ test_unlink_noerrno();
+ test_readlink_and_make_absolute();
+ test_get_files_in_directory();
+ test_var_tmp();
+ test_dot_or_dot_dot();
+ test_access_fd();
+ test_touch_file();
+ test_unlinkat_deallocate();
+ test_fsync_directory_of_file();
+ test_rename_noreplace();
+ test_chmod_and_chown();
+ test_path_is_encrypted();
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-01 04:23:58 +0000