| /* 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 "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; |
| |
| 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; |
| 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 %d:%d */", __func__, major(devnum), minor(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; |
| _cleanup_close_ int fd_ep; |
| 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("Unhandled option code."); |
| } |
| |
| 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); |
