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Diffstat (limited to 'src/test/test-devnum-util.c')
| -rw-r--r-- | src/test/test-devnum-util.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/test/test-devnum-util.c b/src/test/test-devnum-util.c new file mode 100644 index 0000000..2068e35 --- /dev/null +++ b/src/test/test-devnum-util.c @@ -0,0 +1,124 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <sys/stat.h> + +#include "devnum-util.h" +#include "path-util.h" +#include "stat-util.h" +#include "tests.h" + +TEST(parse_devnum) { + dev_t dev; + + assert_se(parse_devnum("", &dev) == -EINVAL); + assert_se(parse_devnum("junk", &dev) == -EINVAL); + assert_se(parse_devnum("0", &dev) == -EINVAL); + assert_se(parse_devnum("5", &dev) == -EINVAL); + assert_se(parse_devnum("5:", &dev) == -EINVAL); + assert_se(parse_devnum(":5", &dev) == -EINVAL); + assert_se(parse_devnum("-1:-1", &dev) == -EINVAL); +#if SIZEOF_DEV_T < 8 + assert_se(parse_devnum("4294967295:4294967295", &dev) == -EINVAL); +#endif + assert_se(parse_devnum("8:11", &dev) >= 0 && major(dev) == 8 && minor(dev) == 11); + assert_se(parse_devnum("0:0", &dev) >= 0 && major(dev) == 0 && minor(dev) == 0); +} + +TEST(device_major_minor_valid) { + /* on glibc dev_t is 64-bit, even though in the kernel it is only 32-bit */ + 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; + + log_debug("> %s", path); + + if (stat(path, &st) < 0) { + assert_se(errno == ENOENT); + log_notice("Path %s not found, skipping test", path); + return; + } + + 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? */ + log_notice("Device %s cannot be resolved, skipping test", path); + 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)); +} + +TEST(device_path_make_canonical) { + 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"); + } +} + +static void test_devnum_format_str_one(dev_t devnum, const char *s) { + dev_t x; + + assert_se(streq(FORMAT_DEVNUM(devnum), s)); + assert_se(parse_devnum(s, &x) >= 0); + assert_se(x == devnum); +} + +TEST(devnum_format_str) { + test_devnum_format_str_one(makedev(0, 0), "0:0"); + test_devnum_format_str_one(makedev(1, 2), "1:2"); + test_devnum_format_str_one(makedev(99, 100), "99:100"); + test_devnum_format_str_one(makedev(4095, 1048575), "4095:1048575"); +} + +DEFINE_TEST_MAIN(LOG_INFO); |