diff options
Diffstat (limited to 'src/libsystemd/sd-device/test-sd-device.c')
| -rw-r--r-- | src/libsystemd/sd-device/test-sd-device.c | 659 |
1 files changed, 659 insertions, 0 deletions
diff --git a/src/libsystemd/sd-device/test-sd-device.c b/src/libsystemd/sd-device/test-sd-device.c new file mode 100644 index 0000000..24bc32f --- /dev/null +++ b/src/libsystemd/sd-device/test-sd-device.c @@ -0,0 +1,659 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <ctype.h> +#include <fcntl.h> +#include <unistd.h> + +#include "device-enumerator-private.h" +#include "device-internal.h" +#include "device-private.h" +#include "device-util.h" +#include "errno-util.h" +#include "fd-util.h" +#include "hashmap.h" +#include "nulstr-util.h" +#include "path-util.h" +#include "rm-rf.h" +#include "stat-util.h" +#include "string-util.h" +#include "tests.h" +#include "time-util.h" +#include "tmpfile-util.h" +#include "udev-util.h" + +static void test_sd_device_one(sd_device *d) { + _cleanup_(sd_device_unrefp) sd_device *dev = NULL; + const char *syspath, *sysname, *subsystem = NULL, *devname, *val; + bool is_block = false; + dev_t devnum; + usec_t usec; + int ifindex, r; + + assert_se(sd_device_get_syspath(d, &syspath) >= 0); + assert_se(path_startswith(syspath, "/sys")); + assert_se(sd_device_get_sysname(d, &sysname) >= 0); + + log_info("%s(%s)", __func__, syspath); + + assert_se(sd_device_new_from_syspath(&dev, syspath) >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + + assert_se(sd_device_new_from_path(&dev, syspath) >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + + r = sd_device_get_ifindex(d, &ifindex); + if (r >= 0) { + assert_se(ifindex > 0); + + r = sd_device_new_from_ifindex(&dev, ifindex); + if (r == -ENODEV) + log_device_warning_errno(d, r, + "Failed to create sd-device object from ifindex %i. " + "Maybe running on a non-host network namespace.", ifindex); + else { + assert_se(r >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + } + + /* This does not require the interface really exists on the network namespace. + * Hence, this should always succeed. */ + assert_se(sd_device_new_from_ifname(&dev, sysname) >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + } else + assert_se(r == -ENOENT); + + r = sd_device_get_subsystem(d, &subsystem); + if (r < 0) + assert_se(r == -ENOENT); + else if (!streq(subsystem, "gpio")) { /* Unfortunately, there exist /sys/class/gpio and /sys/bus/gpio. + * Hence, sd_device_new_from_subsystem_sysname() and + * sd_device_new_from_device_id() may not work as expected. */ + const char *name, *id; + + if (streq(subsystem, "drivers")) + name = strjoina(d->driver_subsystem, ":", sysname); + else + name = sysname; + assert_se(sd_device_new_from_subsystem_sysname(&dev, subsystem, name) >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + + /* The device ID depends on subsystem. */ + assert_se(device_get_device_id(d, &id) >= 0); + r = sd_device_new_from_device_id(&dev, id); + if (r == -ENODEV && ifindex > 0) + log_device_warning_errno(d, r, + "Failed to create sd-device object from device ID \"%s\". " + "Maybe running on a non-host network namespace.", id); + else { + assert_se(r >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + } + + /* These require udev database, and reading database requires device ID. */ + r = sd_device_get_is_initialized(d); + if (r > 0) { + r = sd_device_get_usec_since_initialized(d, &usec); + assert_se((r >= 0 && usec > 0) || r == -ENODATA); + } else + assert(r == 0); + + r = sd_device_get_property_value(d, "ID_NET_DRIVER", &val); + assert_se(r >= 0 || r == -ENOENT); + } + + is_block = streq_ptr(subsystem, "block"); + + r = sd_device_get_devname(d, &devname); + if (r >= 0) { + r = sd_device_new_from_devname(&dev, devname); + if (r >= 0) { + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + } else + assert_se(r == -ENODEV || ERRNO_IS_PRIVILEGE(r)); + + r = sd_device_new_from_path(&dev, devname); + if (r >= 0) { + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + + _cleanup_close_ int fd = -1; + fd = sd_device_open(d, O_CLOEXEC| O_NONBLOCK | (is_block ? O_RDONLY : O_NOCTTY | O_PATH)); + assert_se(fd >= 0 || ERRNO_IS_PRIVILEGE(fd)); + } else + assert_se(r == -ENODEV || ERRNO_IS_PRIVILEGE(r)); + } else + assert_se(r == -ENOENT); + + r = sd_device_get_devnum(d, &devnum); + if (r >= 0) { + _cleanup_free_ char *p = NULL; + + assert_se(major(devnum) > 0); + + assert_se(sd_device_new_from_devnum(&dev, is_block ? 'b' : 'c', devnum) >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + + assert_se(asprintf(&p, "/dev/%s/%u:%u", is_block ? "block" : "char", major(devnum), minor(devnum)) >= 0); + assert_se(sd_device_new_from_devname(&dev, p) >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + + assert_se(sd_device_new_from_path(&dev, p) >= 0); + assert_se(sd_device_get_syspath(dev, &val) >= 0); + assert_se(streq(syspath, val)); + dev = sd_device_unref(dev); + } else + assert_se(r == -ENOENT); + + assert_se(sd_device_get_devpath(d, &val) >= 0); + + r = sd_device_get_devtype(d, &val); + assert_se(r >= 0 || r == -ENOENT); + + r = sd_device_get_driver(d, &val); + assert_se(r >= 0 || r == -ENOENT); + + r = sd_device_get_sysnum(d, &val); + if (r >= 0) { + assert_se(val > sysname); + assert_se(val < sysname + strlen(sysname)); + assert_se(in_charset(val, DIGITS)); + assert_se(!ascii_isdigit(val[-1])); + } else + assert_se(r == -ENOENT); + + r = sd_device_get_sysattr_value(d, "nsid", NULL); + if (r >= 0) { + unsigned x; + + assert_se(device_get_sysattr_unsigned(d, "nsid", NULL) >= 0); + r = device_get_sysattr_unsigned(d, "nsid", &x); + assert_se(r >= 0); + assert_se((x > 0) == (r > 0)); + } else + assert_se(ERRNO_IS_PRIVILEGE(r) || IN_SET(r, -ENOENT, -EINVAL)); +} + +TEST(sd_device_enumerator_devices) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + sd_device *d; + + assert_se(sd_device_enumerator_new(&e) >= 0); + assert_se(sd_device_enumerator_allow_uninitialized(e) >= 0); + /* On some CI environments, it seems some loop block devices and corresponding bdi devices sometimes + * disappear during running this test. Let's exclude them here for stability. */ + assert_se(sd_device_enumerator_add_match_subsystem(e, "bdi", false) >= 0); + assert_se(sd_device_enumerator_add_nomatch_sysname(e, "loop*") >= 0); + /* On CentOS CI, systemd-networkd-tests.py may be running when this test is invoked. The networkd + * test creates and removes many network interfaces, and may interfere with this test. */ + assert_se(sd_device_enumerator_add_match_subsystem(e, "net", false) >= 0); + FOREACH_DEVICE(e, d) + test_sd_device_one(d); +} + +TEST(sd_device_enumerator_subsystems) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + sd_device *d; + + assert_se(sd_device_enumerator_new(&e) >= 0); + assert_se(sd_device_enumerator_allow_uninitialized(e) >= 0); + FOREACH_SUBSYSTEM(e, d) + test_sd_device_one(d); +} + +static void test_sd_device_enumerator_filter_subsystem_one( + const char *subsystem, + Hashmap *h, + unsigned *ret_n_new_dev, + unsigned *ret_n_removed_dev) { + + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + unsigned n_new_dev = 0, n_removed_dev = 0; + sd_device *d; + + assert_se(sd_device_enumerator_new(&e) >= 0); + assert_se(sd_device_enumerator_add_match_subsystem(e, subsystem, true) >= 0); + assert_se(sd_device_enumerator_add_nomatch_sysname(e, "loop*") >= 0); + + FOREACH_DEVICE(e, d) { + const char *syspath; + sd_device *t; + + assert_se(sd_device_get_syspath(d, &syspath) >= 0); + t = hashmap_remove(h, syspath); + + if (!t) { + log_warning("New device found: subsystem:%s syspath:%s", subsystem, syspath); + n_new_dev++; + } + + assert_se(!sd_device_unref(t)); + } + + HASHMAP_FOREACH(d, h) { + const char *syspath; + + assert_se(sd_device_get_syspath(d, &syspath) >= 0); + log_warning("Device removed: subsystem:%s syspath:%s", subsystem, syspath); + n_removed_dev++; + + assert_se(!sd_device_unref(d)); + } + + hashmap_free(h); + + *ret_n_new_dev = n_new_dev; + *ret_n_removed_dev = n_removed_dev; +} + +static bool test_sd_device_enumerator_filter_subsystem_trial(void) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + _cleanup_(hashmap_freep) Hashmap *subsystems = NULL; + unsigned n_new_dev = 0, n_removed_dev = 0; + sd_device *d; + Hashmap *h; + char *s; + + assert_se(subsystems = hashmap_new(&string_hash_ops)); + assert_se(sd_device_enumerator_new(&e) >= 0); + /* See comments in TEST(sd_device_enumerator_devices). */ + assert_se(sd_device_enumerator_add_match_subsystem(e, "bdi", false) >= 0); + assert_se(sd_device_enumerator_add_nomatch_sysname(e, "loop*") >= 0); + assert_se(sd_device_enumerator_add_match_subsystem(e, "net", false) >= 0); + + FOREACH_DEVICE(e, d) { + const char *syspath, *subsystem; + int r; + + assert_se(sd_device_get_syspath(d, &syspath) >= 0); + + r = sd_device_get_subsystem(d, &subsystem); + assert_se(r >= 0 || r == -ENOENT); + if (r < 0) + continue; + + h = hashmap_get(subsystems, subsystem); + if (!h) { + char *str; + assert_se(str = strdup(subsystem)); + assert_se(h = hashmap_new(&string_hash_ops)); + assert_se(hashmap_put(subsystems, str, h) >= 0); + } + + assert_se(hashmap_put(h, syspath, d) >= 0); + assert_se(sd_device_ref(d)); + + log_debug("Added subsystem:%s syspath:%s", subsystem, syspath); + } + + while ((h = hashmap_steal_first_key_and_value(subsystems, (void**) &s))) { + unsigned n, m; + + test_sd_device_enumerator_filter_subsystem_one(s, TAKE_PTR(h), &n, &m); + free(s); + + n_new_dev += n; + n_removed_dev += m; + } + + if (n_new_dev > 0) + log_warning("%u new devices are found in re-scan", n_new_dev); + if (n_removed_dev > 0) + log_warning("%u devices removed in re-scan", n_removed_dev); + + return n_new_dev + n_removed_dev == 0; +} + +static bool test_sd_device_enumerator_filter_subsystem_trial_many(void) { + for (unsigned i = 0; i < 20; i++) { + log_debug("%s(): trial %u", __func__, i); + if (test_sd_device_enumerator_filter_subsystem_trial()) + return true; + } + + return false; +} + +static int on_inotify(sd_event_source *s, const struct inotify_event *event, void *userdata) { + if (test_sd_device_enumerator_filter_subsystem_trial_many()) + return sd_event_exit(sd_event_source_get_event(s), 0); + + return sd_event_exit(sd_event_source_get_event(s), -EBUSY); +} + +TEST(sd_device_enumerator_filter_subsystem) { + /* The test test_sd_device_enumerator_filter_subsystem_trial() is quite racy. Let's run the function + * several times after the udev queue becomes empty. */ + + if (!udev_available() || (access("/run/udev", F_OK) < 0 && errno == ENOENT)) { + assert_se(test_sd_device_enumerator_filter_subsystem_trial_many()); + return; + } + + _cleanup_(sd_event_unrefp) sd_event *event = NULL; + assert_se(sd_event_default(&event) >= 0); + assert_se(sd_event_add_inotify(event, NULL, "/run/udev" , IN_DELETE, on_inotify, NULL) >= 0); + + if (udev_queue_is_empty() == 0) { + log_debug("udev queue is not empty, waiting for all queued events to be processed."); + assert_se(sd_event_loop(event) >= 0); + } else + assert_se(test_sd_device_enumerator_filter_subsystem_trial_many()); +} + +TEST(sd_device_enumerator_add_match_sysattr) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + sd_device *dev; + int ifindex; + + assert_se(sd_device_enumerator_new(&e) >= 0); + assert_se(sd_device_enumerator_allow_uninitialized(e) >= 0); + assert_se(sd_device_enumerator_add_match_subsystem(e, "net", true) >= 0); + assert_se(sd_device_enumerator_add_match_sysattr(e, "ifindex", "1", true) >= 0); + assert_se(sd_device_enumerator_add_match_sysattr(e, "ifindex", "hoge", true) >= 0); + assert_se(sd_device_enumerator_add_match_sysattr(e, "ifindex", "foo", true) >= 0); + assert_se(sd_device_enumerator_add_match_sysattr(e, "ifindex", "bar", false) >= 0); + assert_se(sd_device_enumerator_add_match_sysattr(e, "ifindex", "baz", false) >= 0); + + dev = sd_device_enumerator_get_device_first(e); + assert_se(dev); + assert_se(sd_device_get_ifindex(dev, &ifindex) >= 0); + assert_se(ifindex == 1); + + assert_se(!sd_device_enumerator_get_device_next(e)); +} + +TEST(sd_device_enumerator_add_match_property) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + sd_device *dev; + int ifindex; + + assert_se(sd_device_enumerator_new(&e) >= 0); + assert_se(sd_device_enumerator_allow_uninitialized(e) >= 0); + assert_se(sd_device_enumerator_add_match_subsystem(e, "net", true) >= 0); + assert_se(sd_device_enumerator_add_match_sysattr(e, "ifindex", "1", true) >= 0); + assert_se(sd_device_enumerator_add_match_property(e, "IFINDE*", "1*") >= 0); + assert_se(sd_device_enumerator_add_match_property(e, "IFINDE*", "hoge") >= 0); + assert_se(sd_device_enumerator_add_match_property(e, "IFINDE*", NULL) >= 0); + assert_se(sd_device_enumerator_add_match_property(e, "AAAAA", "BBBB") >= 0); + assert_se(sd_device_enumerator_add_match_property(e, "FOOOO", NULL) >= 0); + + dev = sd_device_enumerator_get_device_first(e); + assert_se(dev); + assert_se(sd_device_get_ifindex(dev, &ifindex) >= 0); + assert_se(ifindex == 1); +} + +static void check_parent_match(sd_device_enumerator *e, sd_device *dev) { + const char *syspath; + bool found = false; + sd_device *d; + + assert_se(sd_device_get_syspath(dev, &syspath) >= 0); + + FOREACH_DEVICE(e, d) { + const char *s; + + assert_se(sd_device_get_syspath(d, &s) >= 0); + if (streq(s, syspath)) { + found = true; + break; + } + } + + if (!found) { + log_device_debug(dev, "not enumerated, already removed??"); + /* If the original device not found, then the device should be already removed. */ + assert_se(access(syspath, F_OK) < 0); + assert_se(errno == ENOENT); + } +} + +TEST(sd_device_enumerator_add_match_parent) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + sd_device *dev; + int r; + + assert_se(sd_device_enumerator_new(&e) >= 0); + assert_se(sd_device_enumerator_allow_uninitialized(e) >= 0); + /* See comments in TEST(sd_device_enumerator_devices). */ + assert_se(sd_device_enumerator_add_match_subsystem(e, "bdi", false) >= 0); + assert_se(sd_device_enumerator_add_nomatch_sysname(e, "loop*") >= 0); + assert_se(sd_device_enumerator_add_match_subsystem(e, "net", false) >= 0); + + if (!slow_tests_enabled()) + assert_se(sd_device_enumerator_add_match_subsystem(e, "block", true) >= 0); + + FOREACH_DEVICE(e, dev) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *p = NULL; + const char *syspath; + sd_device *parent; + + assert_se(sd_device_get_syspath(dev, &syspath) >= 0); + + r = sd_device_get_parent(dev, &parent); + if (r < 0) { + assert_se(ERRNO_IS_DEVICE_ABSENT(r)); + continue; + } + + log_debug("> %s", syspath); + + assert_se(sd_device_enumerator_new(&p) >= 0); + assert_se(sd_device_enumerator_allow_uninitialized(p) >= 0); + assert_se(sd_device_enumerator_add_match_parent(p, parent) >= 0); + + check_parent_match(p, dev); + + /* If the device does not have subsystem, then it is not enumerated. */ + r = sd_device_get_subsystem(parent, NULL); + if (r < 0) { + assert_se(r == -ENOENT); + continue; + } + check_parent_match(p, parent); + } +} + +TEST(sd_device_get_child) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + sd_device *dev; + int r; + + assert_se(sd_device_enumerator_new(&e) >= 0); + assert_se(sd_device_enumerator_allow_uninitialized(e) >= 0); + /* See comments in TEST(sd_device_enumerator_devices). */ + assert_se(sd_device_enumerator_add_match_subsystem(e, "bdi", false) >= 0); + assert_se(sd_device_enumerator_add_nomatch_sysname(e, "loop*") >= 0); + assert_se(sd_device_enumerator_add_match_subsystem(e, "net", false) >= 0); + + if (!slow_tests_enabled()) + assert_se(sd_device_enumerator_add_match_subsystem(e, "block", true) >= 0); + + FOREACH_DEVICE(e, dev) { + const char *syspath, *parent_syspath, *expected_suffix, *suffix; + sd_device *parent, *child; + bool found = false; + + assert_se(sd_device_get_syspath(dev, &syspath) >= 0); + + r = sd_device_get_parent(dev, &parent); + if (r < 0) { + assert_se(ERRNO_IS_DEVICE_ABSENT(r)); + continue; + } + + assert_se(sd_device_get_syspath(parent, &parent_syspath) >= 0); + assert_se(expected_suffix = path_startswith(syspath, parent_syspath)); + + log_debug("> %s", syspath); + + FOREACH_DEVICE_CHILD_WITH_SUFFIX(parent, child, suffix) { + const char *s; + + assert_se(child); + assert_se(suffix); + + if (!streq(suffix, expected_suffix)) + continue; + + assert_se(sd_device_get_syspath(child, &s) >= 0); + assert_se(streq(s, syspath)); + found = true; + break; + } + assert_se(found); + } +} + +TEST(sd_device_new_from_nulstr) { + const char *devlinks = + "/dev/disk/by-partuuid/1290d63a-42cc-4c71-b87c-xxxxxxxxxxxx\0" + "/dev/disk/by-path/pci-0000:00:0f.0-scsi-0:0:0:0-part3\0" + "/dev/disk/by-label/Arch\\x20Linux\0" + "/dev/disk/by-uuid/a07b87e5-4af5-4a59-bde9-yyyyyyyyyyyy\0" + "/dev/disk/by-partlabel/Arch\\x20Linux\0" + "\0"; + + _cleanup_(sd_device_unrefp) sd_device *device = NULL, *from_nulstr = NULL; + _cleanup_free_ char *nulstr_copy = NULL; + const char *devlink, *nulstr; + size_t len; + + assert_se(sd_device_new_from_syspath(&device, "/sys/class/net/lo") >= 0); + + /* Yeah, of course, setting devlink to the loopback interface is nonsense. But this is just a + * test for generating and parsing nulstr. For issue #17772. */ + NULSTR_FOREACH(devlink, devlinks) { + log_device_info(device, "setting devlink: %s", devlink); + assert_se(device_add_devlink(device, devlink) >= 0); + assert_se(set_contains(device->devlinks, devlink)); + } + + /* For issue #23799 */ + assert_se(device_add_tag(device, "tag1", false) >= 0); + assert_se(device_add_tag(device, "tag2", false) >= 0); + assert_se(device_add_tag(device, "current-tag1", true) >= 0); + assert_se(device_add_tag(device, "current-tag2", true) >= 0); + + /* These properties are necessary for device_new_from_nulstr(). See device_verify(). */ + assert_se(device_add_property_internal(device, "SEQNUM", "1") >= 0); + assert_se(device_add_property_internal(device, "ACTION", "change") >= 0); + + assert_se(device_get_properties_nulstr(device, &nulstr, &len) >= 0); + assert_se(nulstr_copy = newdup(char, nulstr, len)); + assert_se(device_new_from_nulstr(&from_nulstr, nulstr_copy, len) >= 0); + + assert_se(sd_device_has_tag(from_nulstr, "tag1") == 1); + assert_se(sd_device_has_tag(from_nulstr, "tag2") == 1); + assert_se(sd_device_has_tag(from_nulstr, "current-tag1") == 1); + assert_se(sd_device_has_tag(from_nulstr, "current-tag2") == 1); + assert_se(sd_device_has_current_tag(from_nulstr, "tag1") == 0); + assert_se(sd_device_has_current_tag(from_nulstr, "tag2") == 0); + assert_se(sd_device_has_current_tag(from_nulstr, "current-tag1") == 1); + assert_se(sd_device_has_current_tag(from_nulstr, "current-tag2") == 1); + + NULSTR_FOREACH(devlink, devlinks) { + log_device_info(from_nulstr, "checking devlink: %s", devlink); + assert_se(set_contains(from_nulstr->devlinks, devlink)); + } +} + +TEST(sd_device_new_from_path) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + _cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL; + sd_device *dev; + int r; + + assert_se(mkdtemp_malloc("/tmp/test-sd-device.XXXXXXX", &tmpdir) >= 0); + + assert_se(sd_device_enumerator_new(&e) >= 0); + assert_se(sd_device_enumerator_allow_uninitialized(e) >= 0); + assert_se(sd_device_enumerator_add_match_subsystem(e, "block", true) >= 0); + assert_se(sd_device_enumerator_add_nomatch_sysname(e, "loop*") >= 0); + assert_se(sd_device_enumerator_add_match_property(e, "DEVNAME", "*") >= 0); + + FOREACH_DEVICE(e, dev) { + _cleanup_(sd_device_unrefp) sd_device *d = NULL; + const char *syspath, *devpath, *sysname, *s; + _cleanup_free_ char *path = NULL; + + assert_se(sd_device_get_sysname(dev, &sysname) >= 0); + + log_debug("%s(%s)", __func__, sysname); + + assert_se(sd_device_get_syspath(dev, &syspath) >= 0); + assert_se(sd_device_new_from_path(&d, syspath) >= 0); + assert_se(sd_device_get_syspath(d, &s) >= 0); + assert_se(streq(s, syspath)); + d = sd_device_unref(d); + + assert_se(sd_device_get_devname(dev, &devpath) >= 0); + r = sd_device_new_from_path(&d, devpath); + if (r >= 0) { + assert_se(sd_device_get_syspath(d, &s) >= 0); + assert_se(streq(s, syspath)); + d = sd_device_unref(d); + } else + assert_se(r == -ENODEV || ERRNO_IS_PRIVILEGE(r)); + + assert_se(path = path_join(tmpdir, sysname)); + assert_se(symlink(syspath, path) >= 0); + assert_se(sd_device_new_from_path(&d, path) >= 0); + assert_se(sd_device_get_syspath(d, &s) >= 0); + assert_se(streq(s, syspath)); + } +} + +static void test_devname_from_devnum_one(const char *path) { + _cleanup_free_ char *resolved = NULL; + struct stat st; + + log_debug("> %s", path); + + if (stat(path, &st) < 0) { + assert_se(errno == ENOENT); + log_notice("Path %s not found, skipping test", path); + return; + } + + assert_se(devname_from_devnum(st.st_mode, st.st_rdev, &resolved) >= 0); + assert_se(path_equal(path, resolved)); + resolved = mfree(resolved); + assert_se(devname_from_stat_rdev(&st, &resolved) >= 0); + assert_se(path_equal(path, resolved)); +} + +TEST(devname_from_devnum) { + test_devname_from_devnum_one("/dev/null"); + test_devname_from_devnum_one("/dev/zero"); + test_devname_from_devnum_one("/dev/full"); + test_devname_from_devnum_one("/dev/random"); + test_devname_from_devnum_one("/dev/urandom"); + test_devname_from_devnum_one("/dev/tty"); + + if (is_device_node("/run/systemd/inaccessible/blk") > 0) { + test_devname_from_devnum_one("/run/systemd/inaccessible/chr"); + test_devname_from_devnum_one("/run/systemd/inaccessible/blk"); + } +} + +DEFINE_TEST_MAIN(LOG_INFO); |