diff options
Diffstat (limited to 'test/test-libudev.c')
| -rw-r--r-- | test/test-libudev.c | 520 |
1 files changed, 520 insertions, 0 deletions
diff --git a/test/test-libudev.c b/test/test-libudev.c new file mode 100644 index 0000000000..caa3b4d14c --- /dev/null +++ b/test/test-libudev.c @@ -0,0 +1,520 @@ +/*** + This file is part of systemd. + + Copyright 2008-2012 Kay Sievers <kay@vrfy.org> + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#include <string.h> +#include <getopt.h> +#include <syslog.h> +#include <fcntl.h> +#include <sys/epoll.h> + +#include "libudev.h" +#include "util.h" + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +static void log_fn(struct udev *udev, + int priority, const char *file, int line, const char *fn, + const char *format, va_list args) +{ + printf("test-libudev: %s %s:%d ", fn, file, line); + vprintf(format, args); +} + +static void print_device(struct udev_device *device) +{ + const char *str; + dev_t devnum; + int count; + struct udev_list_entry *list_entry; + + printf("*** device: %p ***\n", device); + str = udev_device_get_action(device); + if (str != NULL) + printf("action: '%s'\n", str); + + str = udev_device_get_syspath(device); + printf("syspath: '%s'\n", str); + + str = udev_device_get_sysname(device); + printf("sysname: '%s'\n", str); + + str = udev_device_get_sysnum(device); + if (str != NULL) + printf("sysnum: '%s'\n", str); + + str = udev_device_get_devpath(device); + printf("devpath: '%s'\n", str); + + str = udev_device_get_subsystem(device); + if (str != NULL) + printf("subsystem: '%s'\n", str); + + str = udev_device_get_devtype(device); + if (str != NULL) + printf("devtype: '%s'\n", str); + + str = udev_device_get_driver(device); + if (str != NULL) + printf("driver: '%s'\n", str); + + str = udev_device_get_devnode(device); + if (str != NULL) + printf("devname: '%s'\n", str); + + devnum = udev_device_get_devnum(device); + if (major(devnum) > 0) + printf("devnum: %u:%u\n", major(devnum), minor(devnum)); + + count = 0; + udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) { + printf("link: '%s'\n", udev_list_entry_get_name(list_entry)); + count++; + } + if (count > 0) + printf("found %i links\n", count); + + count = 0; + udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) { + printf("property: '%s=%s'\n", + udev_list_entry_get_name(list_entry), + udev_list_entry_get_value(list_entry)); + count++; + } + if (count > 0) + printf("found %i properties\n", count); + + str = udev_device_get_property_value(device, "MAJOR"); + if (str != NULL) + printf("MAJOR: '%s'\n", str); + + str = udev_device_get_sysattr_value(device, "dev"); + if (str != NULL) + printf("attr{dev}: '%s'\n", str); + + printf("\n"); +} + +static int test_device(struct udev *udev, const char *syspath) +{ + struct udev_device *device; + + printf("looking at device: %s\n", syspath); + device = udev_device_new_from_syspath(udev, syspath); + if (device == NULL) { + printf("no device found\n"); + return -1; + } + print_device(device); + udev_device_unref(device); + return 0; +} + +static int test_device_parents(struct udev *udev, const char *syspath) +{ + struct udev_device *device; + struct udev_device *device_parent; + + printf("looking at device: %s\n", syspath); + device = udev_device_new_from_syspath(udev, syspath); + if (device == NULL) + return -1; + + printf("looking at parents\n"); + device_parent = device; + do { + print_device(device_parent); + device_parent = udev_device_get_parent(device_parent); + } while (device_parent != NULL); + + printf("looking at parents again\n"); + device_parent = device; + do { + print_device(device_parent); + device_parent = udev_device_get_parent(device_parent); + } while (device_parent != NULL); + udev_device_unref(device); + + return 0; +} + +static int test_device_devnum(struct udev *udev) +{ + dev_t devnum = makedev(1, 3); + struct udev_device *device; + + printf("looking up device: %u:%u\n", major(devnum), minor(devnum)); + device = udev_device_new_from_devnum(udev, 'c', devnum); + if (device == NULL) + return -1; + print_device(device); + udev_device_unref(device); + return 0; +} + +static int test_device_subsys_name(struct udev *udev) +{ + struct udev_device *device; + + printf("looking up device: 'block':'sda'\n"); + device = udev_device_new_from_subsystem_sysname(udev, "block", "sda"); + if (device == NULL) + return -1; + print_device(device); + udev_device_unref(device); + + printf("looking up device: 'subsystem':'pci'\n"); + device = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci"); + if (device == NULL) + return -1; + print_device(device); + udev_device_unref(device); + + printf("looking up device: 'drivers':'scsi:sd'\n"); + device = udev_device_new_from_subsystem_sysname(udev, "drivers", "scsi:sd"); + if (device == NULL) + return -1; + print_device(device); + udev_device_unref(device); + + printf("looking up device: 'module':'printk'\n"); + device = udev_device_new_from_subsystem_sysname(udev, "module", "printk"); + if (device == NULL) + return -1; + print_device(device); + udev_device_unref(device); + return 0; +} + +static int test_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 != NULL) { + printf("device: '%s' (%s)\n", + udev_device_get_syspath(device), + udev_device_get_subsystem(device)); + udev_device_unref(device); + count++; + } + } + printf("found %i devices\n\n", count); + return count; +} + +static int test_monitor(struct udev *udev) +{ + struct udev_monitor *udev_monitor = NULL; + int fd_ep; + int fd_udev = -1; + struct epoll_event ep_udev, ep_stdin; + + fd_ep = epoll_create1(EPOLL_CLOEXEC); + if (fd_ep < 0) { + printf("error creating epoll fd: %m\n"); + goto out; + } + + udev_monitor = udev_monitor_new_from_netlink(udev, "udev"); + if (udev_monitor == NULL) { + printf("no socket\n"); + goto out; + } + fd_udev = udev_monitor_get_fd(udev_monitor); + + if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) < 0 || + udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) < 0 || + udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") < 0) { + printf("filter failed\n"); + goto out; + } + + if (udev_monitor_enable_receiving(udev_monitor) < 0) { + printf("bind failed\n"); + goto out; + } + + memset(&ep_udev, 0, sizeof(struct epoll_event)); + ep_udev.events = EPOLLIN; + ep_udev.data.fd = fd_udev; + if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) < 0) { + printf("fail to add fd to epoll: %m\n"); + goto out; + } + + memset(&ep_stdin, 0, sizeof(struct epoll_event)); + ep_stdin.events = EPOLLIN; + ep_stdin.data.fd = STDIN_FILENO; + if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) < 0) { + printf("fail to add fd to epoll: %m\n"); + goto out; + } + + 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, ARRAY_SIZE(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 == NULL) { + 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"); + goto out; + } + } + } +out: + if (fd_ep >= 0) + close(fd_ep); + udev_monitor_unref(udev_monitor); + return 0; +} + +static int test_queue(struct udev *udev) +{ + struct udev_queue *udev_queue; + unsigned long long int seqnum; + struct udev_list_entry *list_entry; + + udev_queue = udev_queue_new(udev); + if (udev_queue == NULL) + return -1; + seqnum = udev_queue_get_kernel_seqnum(udev_queue); + printf("seqnum kernel: %llu\n", seqnum); + seqnum = udev_queue_get_udev_seqnum(udev_queue); + printf("seqnum udev : %llu\n", seqnum); + + if (udev_queue_get_queue_is_empty(udev_queue)) + printf("queue is empty\n"); + printf("get queue list\n"); + udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue)) + printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry)); + printf("\n"); + printf("get queue list again\n"); + udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue)) + printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry)); + printf("\n"); + + list_entry = udev_queue_get_queued_list_entry(udev_queue); + if (list_entry != NULL) { + printf("event [%llu] is queued\n", seqnum); + seqnum = strtoull(udev_list_entry_get_value(list_entry), NULL, 10); + if (udev_queue_get_seqnum_is_finished(udev_queue, seqnum)) + printf("event [%llu] is not finished\n", seqnum); + else + printf("event [%llu] is finished\n", seqnum); + } + printf("\n"); + udev_queue_unref(udev_queue); + return 0; +} + +static int test_enumerate(struct udev *udev, const char *subsystem) +{ + struct udev_enumerate *udev_enumerate; + + printf("enumerate '%s'\n", subsystem == NULL ? "<all>" : subsystem); + udev_enumerate = udev_enumerate_new(udev); + if (udev_enumerate == NULL) + return -1; + udev_enumerate_add_match_subsystem(udev_enumerate, subsystem); + udev_enumerate_scan_devices(udev_enumerate); + test_enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + printf("enumerate 'net' + duplicated scan + null + zero\n"); + udev_enumerate = udev_enumerate_new(udev); + if (udev_enumerate == NULL) + 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); + test_enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + printf("enumerate 'block'\n"); + udev_enumerate = udev_enumerate_new(udev); + if (udev_enumerate == NULL) + return -1; + udev_enumerate_add_match_subsystem(udev_enumerate,"block"); + udev_enumerate_add_match_is_initialized(udev_enumerate); + udev_enumerate_scan_devices(udev_enumerate); + test_enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + printf("enumerate 'not block'\n"); + udev_enumerate = udev_enumerate_new(udev); + if (udev_enumerate == NULL) + return -1; + udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block"); + udev_enumerate_scan_devices(udev_enumerate); + test_enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + printf("enumerate 'pci, mem, vc'\n"); + udev_enumerate = udev_enumerate_new(udev); + if (udev_enumerate == NULL) + 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); + test_enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + printf("enumerate 'subsystem'\n"); + udev_enumerate = udev_enumerate_new(udev); + if (udev_enumerate == NULL) + return -1; + udev_enumerate_scan_subsystems(udev_enumerate); + test_enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + + printf("enumerate 'property IF_FS_*=filesystem'\n"); + udev_enumerate = udev_enumerate_new(udev); + if (udev_enumerate == NULL) + return -1; + udev_enumerate_add_match_property(udev_enumerate, "ID_FS*", "filesystem"); + udev_enumerate_scan_devices(udev_enumerate); + test_enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + return 0; +} + +static int test_hwdb(struct udev *udev, const char *modalias) { + struct udev_hwdb * hwdb; + struct udev_list_entry *entry; + + hwdb = udev_hwdb_new(udev); + + udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, modalias, 0)) + printf("'%s'='%s'\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry)); + printf("\n"); + + hwdb = udev_hwdb_unref(hwdb); + return 0; +} + +int main(int argc, char *argv[]) +{ + struct udev *udev = NULL; + 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' }, + {} + }; + const char *syspath = "/devices/virtual/mem/null"; + const char *subsystem = NULL; + char path[1024]; + + udev = udev_new(); + printf("context: %p\n", udev); + if (udev == NULL) { + printf("no context\n"); + return 1; + } + udev_set_log_fn(udev, log_fn); + printf("set log: %p\n", log_fn); + + for (;;) { + int option; + + option = getopt_long(argc, argv, "+p:s:dhV", options, NULL); + if (option == -1) + break; + + switch (option) { + case 'p': + syspath = optarg; + break; + case 's': + subsystem = optarg; + break; + case 'd': + if (udev_get_log_priority(udev) < LOG_INFO) + udev_set_log_priority(udev, LOG_INFO); + break; + case 'h': + printf("--debug --syspath= --subsystem= --help\n"); + goto out; + case 'V': + printf("%s\n", VERSION); + goto out; + default: + goto out; + } + } + + /* add sys path if needed */ + if (!startswith(syspath, "/sys")) { + snprintf(path, sizeof(path), "/sys/%s", syspath); + syspath = path; + } + + test_device(udev, syspath); + test_device_devnum(udev); + test_device_subsys_name(udev); + test_device_parents(udev, syspath); + + test_enumerate(udev, subsystem); + + test_queue(udev); + + test_hwdb(udev, "usb:v0D50p0011*"); + + test_monitor(udev); +out: + udev_unref(udev); + return 0; +} |