diff options
Diffstat (limited to 'src/libudev/test-libudev.c')
| -rw-r--r-- | src/libudev/test-libudev.c | 496 |
1 files changed, 496 insertions, 0 deletions
diff --git a/src/libudev/test-libudev.c b/src/libudev/test-libudev.c new file mode 100644 index 0000000..e05a062 --- /dev/null +++ b/src/libudev/test-libudev.c @@ -0,0 +1,496 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <getopt.h> +#include <sys/epoll.h> +#include <unistd.h> + +#include "alloc-util.h" +#include "devnum-util.h" +#include "fd-util.h" +#include "libudev-list-internal.h" +#include "libudev-util.h" +#include "log.h" +#include "main-func.h" +#include "stdio-util.h" +#include "string-util.h" +#include "tests.h" +#include "version.h" + +static bool arg_monitor = false; + +static void print_device(struct udev_device *device) { + const char *str; + dev_t devnum; + int count; + struct udev_list_entry *list_entry; + + log_info("*** device: %p ***", device); + str = udev_device_get_action(device); + if (str) + log_info("action: '%s'", str); + + str = udev_device_get_syspath(device); + log_info("syspath: '%s'", str); + + str = udev_device_get_sysname(device); + log_info("sysname: '%s'", str); + + str = udev_device_get_sysnum(device); + if (str) + log_info("sysnum: '%s'", str); + + str = udev_device_get_devpath(device); + log_info("devpath: '%s'", str); + + str = udev_device_get_subsystem(device); + if (str) + log_info("subsystem: '%s'", str); + + str = udev_device_get_devtype(device); + if (str) + log_info("devtype: '%s'", str); + + str = udev_device_get_driver(device); + if (str) + log_info("driver: '%s'", str); + + str = udev_device_get_devnode(device); + if (str) + log_info("devname: '%s'", str); + + devnum = udev_device_get_devnum(device); + if (major(devnum) > 0) + log_info("devnum: %u:%u", major(devnum), minor(devnum)); + + count = 0; + udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) { + log_info("link: '%s'", udev_list_entry_get_name(list_entry)); + count++; + } + if (count > 0) + log_info("found %i links", count); + + count = 0; + udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) { + log_info("property: '%s=%s'", + udev_list_entry_get_name(list_entry), + udev_list_entry_get_value(list_entry)); + count++; + } + if (count > 0) + log_info("found %i properties", count); + + str = udev_device_get_property_value(device, "MAJOR"); + if (str) + log_info("MAJOR: '%s'", str); + + str = udev_device_get_sysattr_value(device, "dev"); + if (str) + log_info("attr{dev}: '%s'", str); +} + +static void test_device(struct udev *udev, const char *syspath) { + _cleanup_(udev_device_unrefp) struct udev_device *device = NULL; + + log_info("/* %s, device %s */", __func__, syspath); + device = udev_device_new_from_syspath(udev, syspath); + if (device) + print_device(device); + else + log_warning_errno(errno, "udev_device_new_from_syspath: %m"); +} + +static void test_device_parents(struct udev *udev, const char *syspath) { + _cleanup_(udev_device_unrefp) struct udev_device *device = NULL; + struct udev_device *device_parent; + + log_info("/* %s, device %s */", __func__, syspath); + device = udev_device_new_from_syspath(udev, syspath); + if (!device) + return; + + log_info("looking at parents"); + device_parent = device; + do { + print_device(device_parent); + device_parent = udev_device_get_parent(device_parent); + } while (device_parent != NULL); + + log_info("looking at parents again"); + device_parent = device; + do { + print_device(device_parent); + device_parent = udev_device_get_parent(device_parent); + } while (device_parent != NULL); +} + +static void test_device_devnum(struct udev *udev) { + dev_t devnum = makedev(1, 3); + _cleanup_(udev_device_unrefp) struct udev_device *device; + + log_info("/* %s, device " DEVNUM_FORMAT_STR " */", __func__, DEVNUM_FORMAT_VAL(devnum)); + + device = udev_device_new_from_devnum(udev, 'c', devnum); + if (device) + print_device(device); + else + log_warning_errno(errno, "udev_device_new_from_devnum: %m"); +} + +static void test_device_subsys_name(struct udev *udev, const char *subsys, const char *dev) { + _cleanup_(udev_device_unrefp) struct udev_device *device; + + log_info("looking up device: '%s:%s'", subsys, dev); + device = udev_device_new_from_subsystem_sysname(udev, subsys, dev); + if (!device) + log_warning_errno(errno, "udev_device_new_from_subsystem_sysname: %m"); + else + print_device(device); +} + +static int enumerate_print_list(struct udev_enumerate *enumerate) { + struct udev_list_entry *list_entry; + int count = 0; + + udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) { + struct udev_device *device; + + device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate), + udev_list_entry_get_name(list_entry)); + if (device) { + log_info("device: '%s' (%s)", + udev_device_get_syspath(device), + udev_device_get_subsystem(device)); + udev_device_unref(device); + count++; + } + } + log_info("found %i devices", count); + return count; +} + +static void test_monitor(struct udev *udev) { + _cleanup_(udev_monitor_unrefp) struct udev_monitor *udev_monitor = NULL; + _cleanup_close_ int fd_ep = -EBADF; + int fd_udev; + struct epoll_event ep_udev = { + .events = EPOLLIN, + }, ep_stdin = { + .events = EPOLLIN, + .data.fd = STDIN_FILENO, + }; + + log_info("/* %s */", __func__); + + fd_ep = epoll_create1(EPOLL_CLOEXEC); + assert_se(fd_ep >= 0); + + udev_monitor = udev_monitor_new_from_netlink(udev, "udev"); + assert_se(udev_monitor != NULL); + + fd_udev = udev_monitor_get_fd(udev_monitor); + ep_udev.data.fd = fd_udev; + + assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) >= 0); + assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) >= 0); + assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") >= 0); + + assert_se(udev_monitor_enable_receiving(udev_monitor) >= 0); + + assert_se(epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) >= 0); + assert_se(epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) >= 0); + + for (;;) { + int fdcount; + struct epoll_event ev[4]; + struct udev_device *device; + int i; + + printf("waiting for events from udev, press ENTER to exit\n"); + fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1); + printf("epoll fd count: %i\n", fdcount); + + for (i = 0; i < fdcount; i++) { + if (ev[i].data.fd == fd_udev && ev[i].events & EPOLLIN) { + device = udev_monitor_receive_device(udev_monitor); + if (!device) { + printf("no device from socket\n"); + continue; + } + print_device(device); + udev_device_unref(device); + } else if (ev[i].data.fd == STDIN_FILENO && ev[i].events & EPOLLIN) { + printf("exiting loop\n"); + return; + } + } + } +} + +static void test_queue(struct udev *udev) { + struct udev_queue *udev_queue; + bool empty; + + log_info("/* %s */", __func__); + + assert_se(udev_queue = udev_queue_new(udev)); + + empty = udev_queue_get_queue_is_empty(udev_queue); + log_info("queue is %s", empty ? "empty" : "not empty"); + udev_queue_unref(udev_queue); +} + +static int test_enumerate(struct udev *udev, const char *subsystem) { + struct udev_enumerate *udev_enumerate; + int r; + + log_info("/* %s */", __func__); + + log_info("enumerate '%s'", subsystem == NULL ? "<all>" : subsystem); + udev_enumerate = udev_enumerate_new(udev); + if (!udev_enumerate) + return -1; + udev_enumerate_add_match_subsystem(udev_enumerate, subsystem); + udev_enumerate_scan_devices(udev_enumerate); + enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + log_info("enumerate 'net' + duplicated scan + null + zero"); + udev_enumerate = udev_enumerate_new(udev); + if (!udev_enumerate) + return -1; + udev_enumerate_add_match_subsystem(udev_enumerate, "net"); + udev_enumerate_scan_devices(udev_enumerate); + udev_enumerate_scan_devices(udev_enumerate); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_scan_devices(udev_enumerate); + enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + log_info("enumerate 'block'"); + udev_enumerate = udev_enumerate_new(udev); + if (!udev_enumerate) + return -1; + udev_enumerate_add_match_subsystem(udev_enumerate,"block"); + r = udev_enumerate_add_match_is_initialized(udev_enumerate); + if (r < 0) { + udev_enumerate_unref(udev_enumerate); + return r; + } + udev_enumerate_scan_devices(udev_enumerate); + enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + log_info("enumerate 'not block'"); + udev_enumerate = udev_enumerate_new(udev); + if (!udev_enumerate) + return -1; + udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block"); + udev_enumerate_scan_devices(udev_enumerate); + enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + log_info("enumerate 'pci, mem, vc'"); + udev_enumerate = udev_enumerate_new(udev); + if (!udev_enumerate) + return -1; + udev_enumerate_add_match_subsystem(udev_enumerate, "pci"); + udev_enumerate_add_match_subsystem(udev_enumerate, "mem"); + udev_enumerate_add_match_subsystem(udev_enumerate, "vc"); + udev_enumerate_scan_devices(udev_enumerate); + enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + log_info("enumerate 'subsystem'"); + udev_enumerate = udev_enumerate_new(udev); + if (!udev_enumerate) + return -1; + udev_enumerate_scan_subsystems(udev_enumerate); + enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + log_info("enumerate 'property IF_FS_*=filesystem'"); + udev_enumerate = udev_enumerate_new(udev); + if (!udev_enumerate) + return -1; + udev_enumerate_add_match_property(udev_enumerate, "ID_FS*", "filesystem"); + udev_enumerate_scan_devices(udev_enumerate); + enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + return 0; +} + +static void test_hwdb(struct udev *udev, const char *modalias) { + struct udev_hwdb *hwdb; + struct udev_list_entry *entry; + + log_info("/* %s */", __func__); + + hwdb = udev_hwdb_new(udev); + if (!hwdb) + log_warning_errno(errno, "Failed to open hwdb: %m"); + + udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, modalias, 0)) + log_info("'%s'='%s'", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry)); + + hwdb = udev_hwdb_unref(hwdb); + assert_se(hwdb == NULL); +} + +static void test_list(void) { + _cleanup_(udev_list_freep) struct udev_list *list = NULL; + struct udev_list_entry *e; + + /* empty list */ + assert_se(list = udev_list_new(false)); + assert_se(!udev_list_get_entry(list)); + list = udev_list_free(list); + + /* unique == false */ + assert_se(list = udev_list_new(false)); + assert_se(udev_list_entry_add(list, "aaa", "hoge")); + assert_se(udev_list_entry_add(list, "aaa", "hogehoge")); + assert_se(udev_list_entry_add(list, "bbb", "foo")); + e = udev_list_get_entry(list); + assert_se(e); + assert_se(streq_ptr(udev_list_entry_get_name(e), "aaa")); + assert_se(streq_ptr(udev_list_entry_get_value(e), "hoge")); + e = udev_list_entry_get_next(e); + assert_se(e); + assert_se(streq_ptr(udev_list_entry_get_name(e), "aaa")); + assert_se(streq_ptr(udev_list_entry_get_value(e), "hogehoge")); + e = udev_list_entry_get_next(e); + assert_se(e); + assert_se(streq_ptr(udev_list_entry_get_name(e), "bbb")); + assert_se(streq_ptr(udev_list_entry_get_value(e), "foo")); + assert_se(!udev_list_entry_get_next(e)); + + assert_se(!udev_list_entry_get_by_name(e, "aaa")); + assert_se(!udev_list_entry_get_by_name(e, "bbb")); + assert_se(!udev_list_entry_get_by_name(e, "ccc")); + list = udev_list_free(list); + + /* unique == true */ + assert_se(list = udev_list_new(true)); + assert_se(udev_list_entry_add(list, "aaa", "hoge")); + assert_se(udev_list_entry_add(list, "aaa", "hogehoge")); + assert_se(udev_list_entry_add(list, "bbb", "foo")); + e = udev_list_get_entry(list); + assert_se(e); + assert_se(streq_ptr(udev_list_entry_get_name(e), "aaa")); + assert_se(streq_ptr(udev_list_entry_get_value(e), "hogehoge")); + e = udev_list_entry_get_next(e); + assert_se(streq_ptr(udev_list_entry_get_name(e), "bbb")); + assert_se(streq_ptr(udev_list_entry_get_value(e), "foo")); + assert_se(!udev_list_entry_get_next(e)); + + e = udev_list_entry_get_by_name(e, "bbb"); + assert_se(e); + assert_se(streq_ptr(udev_list_entry_get_name(e), "bbb")); + assert_se(streq_ptr(udev_list_entry_get_value(e), "foo")); + e = udev_list_entry_get_by_name(e, "aaa"); + assert_se(e); + assert_se(streq_ptr(udev_list_entry_get_name(e), "aaa")); + assert_se(streq_ptr(udev_list_entry_get_value(e), "hogehoge")); + assert_se(!udev_list_entry_get_by_name(e, "ccc")); +} + +static int parse_args(int argc, char *argv[], const char **syspath, const char **subsystem) { + static const struct option options[] = { + { "syspath", required_argument, NULL, 'p' }, + { "subsystem", required_argument, NULL, 's' }, + { "debug", no_argument, NULL, 'd' }, + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, 'V' }, + { "monitor", no_argument, NULL, 'm' }, + {} + }; + int c; + + while ((c = getopt_long(argc, argv, "p:s:dhVm", options, NULL)) >= 0) + switch (c) { + case 'p': + *syspath = optarg; + break; + + case 's': + *subsystem = optarg; + break; + + case 'd': + log_set_max_level(LOG_DEBUG); + break; + + case 'h': + printf("--debug --syspath= --subsystem= --help\n"); + return 0; + + case 'V': + printf("%s\n", GIT_VERSION); + return 0; + + case 'm': + arg_monitor = true; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached(); + } + + return 1; +} + +static int run(int argc, char *argv[]) { + _cleanup_(udev_unrefp) struct udev *udev = NULL; + + const char *syspath = "/devices/virtual/mem/null"; + const char *subsystem = NULL; + int r; + + test_setup_logging(LOG_INFO); + + r = parse_args(argc, argv, &syspath, &subsystem); + if (r <= 0) + return r; + + assert_se(udev = udev_new()); + + /* add sys path if needed */ + if (!startswith(syspath, "/sys")) + syspath = strjoina("/sys/", syspath); + + test_device(udev, syspath); + test_device_devnum(udev); + test_device_subsys_name(udev, "block", "sda"); + test_device_subsys_name(udev, "subsystem", "pci"); + test_device_subsys_name(udev, "drivers", "scsi:sd"); + test_device_subsys_name(udev, "module", "printk"); + test_device_parents(udev, syspath); + + test_enumerate(udev, subsystem); + + test_queue(udev); + + test_hwdb(udev, "usb:v0D50p0011*"); + + if (arg_monitor) + test_monitor(udev); + + test_list(); + + return 0; +} + +DEFINE_MAIN_FUNCTION(run); |