diff options
Diffstat (limited to 'src/test/test-stat-util.c')
| -rw-r--r-- | src/test/test-stat-util.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/test/test-stat-util.c b/src/test/test-stat-util.c new file mode 100644 index 0000000..9aca09c --- /dev/null +++ b/src/test/test-stat-util.c @@ -0,0 +1,167 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <fcntl.h> +#include <linux/magic.h> +#include <unistd.h> + +#include "alloc-util.h" +#include "fd-util.h" +#include "macro.h" +#include "mountpoint-util.h" +#include "namespace-util.h" +#include "path-util.h" +#include "stat-util.h" +#include "tmpfile-util.h" + +static void test_files_same(void) { + _cleanup_close_ int fd = -1; + char name[] = "/tmp/test-files_same.XXXXXX"; + char name_alias[] = "/tmp/test-files_same.alias"; + + fd = mkostemp_safe(name); + assert_se(fd >= 0); + assert_se(symlink(name, name_alias) >= 0); + + assert_se(files_same(name, name, 0)); + assert_se(files_same(name, name, AT_SYMLINK_NOFOLLOW)); + assert_se(files_same(name, name_alias, 0)); + assert_se(!files_same(name, name_alias, AT_SYMLINK_NOFOLLOW)); + + unlink(name); + unlink(name_alias); +} + +static void test_is_symlink(void) { + char name[] = "/tmp/test-is_symlink.XXXXXX"; + char name_link[] = "/tmp/test-is_symlink.link"; + _cleanup_close_ int fd = -1; + + fd = mkostemp_safe(name); + assert_se(fd >= 0); + assert_se(symlink(name, name_link) >= 0); + + assert_se(is_symlink(name) == 0); + assert_se(is_symlink(name_link) == 1); + assert_se(is_symlink("/a/file/which/does/not/exist/i/guess") < 0); + + unlink(name); + unlink(name_link); +} + +static void test_path_is_fs_type(void) { + /* run might not be a mount point in build chroots */ + if (path_is_mount_point("/run", NULL, AT_SYMLINK_FOLLOW) > 0) { + assert_se(path_is_fs_type("/run", TMPFS_MAGIC) > 0); + assert_se(path_is_fs_type("/run", BTRFS_SUPER_MAGIC) == 0); + } + assert_se(path_is_fs_type("/proc", PROC_SUPER_MAGIC) > 0); + assert_se(path_is_fs_type("/proc", BTRFS_SUPER_MAGIC) == 0); + assert_se(path_is_fs_type("/i-dont-exist", BTRFS_SUPER_MAGIC) == -ENOENT); +} + +static void test_path_is_temporary_fs(void) { + /* run might not be a mount point in build chroots */ + if (path_is_mount_point("/run", NULL, AT_SYMLINK_FOLLOW) > 0) + assert_se(path_is_temporary_fs("/run") > 0); + assert_se(path_is_temporary_fs("/proc") == 0); + assert_se(path_is_temporary_fs("/i-dont-exist") == -ENOENT); +} + +static void test_fd_is_network_ns(void) { + _cleanup_close_ int fd = -1; + assert_se(fd_is_network_ns(STDIN_FILENO) == 0); + assert_se(fd_is_network_ns(STDERR_FILENO) == 0); + assert_se(fd_is_network_ns(STDOUT_FILENO) == 0); + + assert_se((fd = open("/proc/self/ns/mnt", O_CLOEXEC|O_RDONLY)) >= 0); + assert_se(IN_SET(fd_is_network_ns(fd), 0, -EUCLEAN)); + fd = safe_close(fd); + + assert_se((fd = open("/proc/self/ns/net", O_CLOEXEC|O_RDONLY)) >= 0); + assert_se(IN_SET(fd_is_network_ns(fd), 1, -EUCLEAN)); +} + +static void test_device_major_minor_valid(void) { + /* on glibc dev_t is 64bit, even though in the kernel it is only 32bit */ + assert_cc(sizeof(dev_t) == sizeof(uint64_t)); + + assert_se(DEVICE_MAJOR_VALID(0U)); + assert_se(DEVICE_MINOR_VALID(0U)); + + assert_se(DEVICE_MAJOR_VALID(1U)); + assert_se(DEVICE_MINOR_VALID(1U)); + + assert_se(!DEVICE_MAJOR_VALID(-1U)); + assert_se(!DEVICE_MINOR_VALID(-1U)); + + assert_se(DEVICE_MAJOR_VALID(1U << 10)); + assert_se(DEVICE_MINOR_VALID(1U << 10)); + + assert_se(DEVICE_MAJOR_VALID((1U << 12) - 1)); + assert_se(DEVICE_MINOR_VALID((1U << 20) - 1)); + + assert_se(!DEVICE_MAJOR_VALID((1U << 12))); + assert_se(!DEVICE_MINOR_VALID((1U << 20))); + + assert_se(!DEVICE_MAJOR_VALID(1U << 25)); + assert_se(!DEVICE_MINOR_VALID(1U << 25)); + + assert_se(!DEVICE_MAJOR_VALID(UINT32_MAX)); + assert_se(!DEVICE_MINOR_VALID(UINT32_MAX)); + + assert_se(!DEVICE_MAJOR_VALID(UINT64_MAX)); + assert_se(!DEVICE_MINOR_VALID(UINT64_MAX)); + + assert_se(DEVICE_MAJOR_VALID(major(0))); + assert_se(DEVICE_MINOR_VALID(minor(0))); +} + +static void test_device_path_make_canonical_one(const char *path) { + _cleanup_free_ char *resolved = NULL, *raw = NULL; + struct stat st; + dev_t devno; + mode_t mode; + int r; + + assert_se(stat(path, &st) >= 0); + r = device_path_make_canonical(st.st_mode, st.st_rdev, &resolved); + if (r == -ENOENT) /* maybe /dev/char/x:y and /dev/block/x:y are missing in this test environment, because we + * run in a container or so? */ + return; + + assert_se(r >= 0); + assert_se(path_equal(path, resolved)); + + assert_se(device_path_make_major_minor(st.st_mode, st.st_rdev, &raw) >= 0); + assert_se(device_path_parse_major_minor(raw, &mode, &devno) >= 0); + + assert_se(st.st_rdev == devno); + assert_se((st.st_mode & S_IFMT) == (mode & S_IFMT)); +} + +static void test_device_path_make_canonical(void) { + + test_device_path_make_canonical_one("/dev/null"); + test_device_path_make_canonical_one("/dev/zero"); + test_device_path_make_canonical_one("/dev/full"); + test_device_path_make_canonical_one("/dev/random"); + test_device_path_make_canonical_one("/dev/urandom"); + test_device_path_make_canonical_one("/dev/tty"); + + if (is_device_node("/run/systemd/inaccessible/blk") > 0) { + test_device_path_make_canonical_one("/run/systemd/inaccessible/chr"); + test_device_path_make_canonical_one("/run/systemd/inaccessible/blk"); + } +} + +int main(int argc, char *argv[]) { + test_files_same(); + test_is_symlink(); + test_path_is_fs_type(); + test_path_is_temporary_fs(); + test_fd_is_network_ns(); + test_device_major_minor_valid(); + test_device_path_make_canonical(); + + return 0; +} |