4e361acc06
Done by coccinelle/equals-null.cocci
586 lines
22 KiB
C
586 lines
22 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <errno.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <sys/epoll.h>
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#include <unistd.h>
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#include "alloc-util.h"
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#include "build.h"
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#include "fd-util.h"
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#include "libudev-list-internal.h"
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#include "libudev-util.h"
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#include "log.h"
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#include "main-func.h"
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#include "stdio-util.h"
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#include "string-util.h"
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#include "tests.h"
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static bool arg_monitor = false;
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static void print_device(struct udev_device *device) {
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const char *str;
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dev_t devnum;
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int count;
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struct udev_list_entry *list_entry;
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log_info("*** device: %p ***", device);
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str = udev_device_get_action(device);
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if (str)
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log_info("action: '%s'", str);
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str = udev_device_get_syspath(device);
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log_info("syspath: '%s'", str);
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str = udev_device_get_sysname(device);
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log_info("sysname: '%s'", str);
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str = udev_device_get_sysnum(device);
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if (str)
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log_info("sysnum: '%s'", str);
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str = udev_device_get_devpath(device);
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log_info("devpath: '%s'", str);
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str = udev_device_get_subsystem(device);
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if (str)
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log_info("subsystem: '%s'", str);
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str = udev_device_get_devtype(device);
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if (str)
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log_info("devtype: '%s'", str);
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str = udev_device_get_driver(device);
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if (str)
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log_info("driver: '%s'", str);
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str = udev_device_get_devnode(device);
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if (str)
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log_info("devname: '%s'", str);
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devnum = udev_device_get_devnum(device);
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if (major(devnum) > 0)
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log_info("devnum: %u:%u", major(devnum), minor(devnum));
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count = 0;
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udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) {
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log_info("link: '%s'", udev_list_entry_get_name(list_entry));
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count++;
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}
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if (count > 0)
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log_info("found %i links", count);
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count = 0;
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udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) {
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log_info("property: '%s=%s'",
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udev_list_entry_get_name(list_entry),
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udev_list_entry_get_value(list_entry));
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count++;
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}
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if (count > 0)
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log_info("found %i properties", count);
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str = udev_device_get_property_value(device, "MAJOR");
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if (str)
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log_info("MAJOR: '%s'", str);
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str = udev_device_get_sysattr_value(device, "dev");
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if (str)
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log_info("attr{dev}: '%s'", str);
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}
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static void test_device(struct udev *udev, const char *syspath) {
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_cleanup_(udev_device_unrefp) struct udev_device *device;
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log_info("/* %s, device %s */", __func__, syspath);
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device = udev_device_new_from_syspath(udev, syspath);
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if (device)
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print_device(device);
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else
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log_warning_errno(errno, "udev_device_new_from_syspath: %m");
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}
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static void test_device_parents(struct udev *udev, const char *syspath) {
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_cleanup_(udev_device_unrefp) struct udev_device *device;
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struct udev_device *device_parent;
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log_info("/* %s, device %s */", __func__, syspath);
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device = udev_device_new_from_syspath(udev, syspath);
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if (device == NULL)
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return;
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log_info("looking at parents");
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device_parent = device;
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do {
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print_device(device_parent);
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device_parent = udev_device_get_parent(device_parent);
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} while (device_parent != NULL);
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log_info("looking at parents again");
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device_parent = device;
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do {
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print_device(device_parent);
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device_parent = udev_device_get_parent(device_parent);
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} while (device_parent != NULL);
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}
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static void test_device_devnum(struct udev *udev) {
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dev_t devnum = makedev(1, 3);
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_cleanup_(udev_device_unrefp) struct udev_device *device;
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log_info("/* %s, device %d:%d */", __func__, major(devnum), minor(devnum));
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device = udev_device_new_from_devnum(udev, 'c', devnum);
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if (device)
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print_device(device);
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else
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log_warning_errno(errno, "udev_device_new_from_devnum: %m");
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}
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static void test_device_subsys_name(struct udev *udev, const char *subsys, const char *dev) {
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_cleanup_(udev_device_unrefp) struct udev_device *device;
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log_info("looking up device: '%s:%s'", subsys, dev);
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device = udev_device_new_from_subsystem_sysname(udev, subsys, dev);
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if (device == NULL)
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log_warning_errno(errno, "udev_device_new_from_subsystem_sysname: %m");
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else
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print_device(device);
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}
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static int enumerate_print_list(struct udev_enumerate *enumerate) {
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struct udev_list_entry *list_entry;
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int count = 0;
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udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) {
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struct udev_device *device;
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device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
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udev_list_entry_get_name(list_entry));
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if (device) {
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log_info("device: '%s' (%s)",
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udev_device_get_syspath(device),
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udev_device_get_subsystem(device));
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udev_device_unref(device);
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count++;
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}
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}
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log_info("found %i devices", count);
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return count;
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}
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static void test_monitor(struct udev *udev) {
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_cleanup_(udev_monitor_unrefp) struct udev_monitor *udev_monitor;
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_cleanup_close_ int fd_ep;
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int fd_udev;
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struct epoll_event ep_udev = {
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.events = EPOLLIN,
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}, ep_stdin = {
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.events = EPOLLIN,
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.data.fd = STDIN_FILENO,
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};
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log_info("/* %s */", __func__);
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fd_ep = epoll_create1(EPOLL_CLOEXEC);
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assert_se(fd_ep >= 0);
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udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
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assert_se(udev_monitor != NULL);
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fd_udev = udev_monitor_get_fd(udev_monitor);
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ep_udev.data.fd = fd_udev;
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assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) >= 0);
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assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) >= 0);
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assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") >= 0);
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assert_se(udev_monitor_enable_receiving(udev_monitor) >= 0);
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assert_se(epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) >= 0);
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assert_se(epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) >= 0);
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for (;;) {
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int fdcount;
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struct epoll_event ev[4];
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struct udev_device *device;
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int i;
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printf("waiting for events from udev, press ENTER to exit\n");
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fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1);
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printf("epoll fd count: %i\n", fdcount);
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for (i = 0; i < fdcount; i++) {
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if (ev[i].data.fd == fd_udev && ev[i].events & EPOLLIN) {
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device = udev_monitor_receive_device(udev_monitor);
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if (device == NULL) {
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printf("no device from socket\n");
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continue;
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}
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print_device(device);
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udev_device_unref(device);
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} else if (ev[i].data.fd == STDIN_FILENO && ev[i].events & EPOLLIN) {
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printf("exiting loop\n");
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return;
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}
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}
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}
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}
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static void test_queue(struct udev *udev) {
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struct udev_queue *udev_queue;
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bool empty;
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log_info("/* %s */", __func__);
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assert_se(udev_queue = udev_queue_new(udev));
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empty = udev_queue_get_queue_is_empty(udev_queue);
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log_info("queue is %s", empty ? "empty" : "not empty");
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udev_queue_unref(udev_queue);
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}
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static int test_enumerate(struct udev *udev, const char *subsystem) {
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struct udev_enumerate *udev_enumerate;
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int r;
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log_info("/* %s */", __func__);
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log_info("enumerate '%s'", subsystem == NULL ? "<all>" : subsystem);
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udev_enumerate = udev_enumerate_new(udev);
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if (!udev_enumerate)
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return -1;
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udev_enumerate_add_match_subsystem(udev_enumerate, subsystem);
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udev_enumerate_scan_devices(udev_enumerate);
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enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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log_info("enumerate 'net' + duplicated scan + null + zero");
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udev_enumerate = udev_enumerate_new(udev);
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if (!udev_enumerate)
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return -1;
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udev_enumerate_add_match_subsystem(udev_enumerate, "net");
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udev_enumerate_scan_devices(udev_enumerate);
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udev_enumerate_scan_devices(udev_enumerate);
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_scan_devices(udev_enumerate);
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enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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log_info("enumerate 'block'");
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udev_enumerate = udev_enumerate_new(udev);
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if (!udev_enumerate)
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return -1;
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udev_enumerate_add_match_subsystem(udev_enumerate,"block");
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r = udev_enumerate_add_match_is_initialized(udev_enumerate);
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if (r < 0) {
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udev_enumerate_unref(udev_enumerate);
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return r;
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}
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udev_enumerate_scan_devices(udev_enumerate);
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enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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log_info("enumerate 'not block'");
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udev_enumerate = udev_enumerate_new(udev);
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if (!udev_enumerate)
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return -1;
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udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block");
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udev_enumerate_scan_devices(udev_enumerate);
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enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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log_info("enumerate 'pci, mem, vc'");
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udev_enumerate = udev_enumerate_new(udev);
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if (!udev_enumerate)
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return -1;
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udev_enumerate_add_match_subsystem(udev_enumerate, "pci");
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udev_enumerate_add_match_subsystem(udev_enumerate, "mem");
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udev_enumerate_add_match_subsystem(udev_enumerate, "vc");
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udev_enumerate_scan_devices(udev_enumerate);
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enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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log_info("enumerate 'subsystem'");
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udev_enumerate = udev_enumerate_new(udev);
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if (!udev_enumerate)
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return -1;
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udev_enumerate_scan_subsystems(udev_enumerate);
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enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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log_info("enumerate 'property IF_FS_*=filesystem'");
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udev_enumerate = udev_enumerate_new(udev);
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if (!udev_enumerate)
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return -1;
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udev_enumerate_add_match_property(udev_enumerate, "ID_FS*", "filesystem");
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udev_enumerate_scan_devices(udev_enumerate);
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enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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return 0;
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}
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static void test_hwdb(struct udev *udev, const char *modalias) {
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struct udev_hwdb *hwdb;
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struct udev_list_entry *entry;
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log_info("/* %s */", __func__);
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hwdb = udev_hwdb_new(udev);
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if (!hwdb)
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log_warning_errno(errno, "Failed to open hwdb: %m");
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udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, modalias, 0))
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log_info("'%s'='%s'", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry));
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hwdb = udev_hwdb_unref(hwdb);
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assert_se(hwdb == NULL);
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}
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static void test_util_replace_whitespace_one_len(const char *str, size_t len, const char *expected) {
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_cleanup_free_ char *result = NULL;
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int r;
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result = new(char, len + 1);
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assert_se(result);
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r = util_replace_whitespace(str, result, len);
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assert_se((size_t) r == strlen(expected));
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assert_se(streq(result, expected));
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}
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static void test_util_replace_whitespace_one(const char *str, const char *expected) {
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test_util_replace_whitespace_one_len(str, strlen(str), expected);
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}
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static void test_util_replace_whitespace(void) {
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log_info("/* %s */", __func__);
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test_util_replace_whitespace_one("hogehoge", "hogehoge");
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test_util_replace_whitespace_one("hoge hoge", "hoge_hoge");
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test_util_replace_whitespace_one(" hoge hoge ", "hoge_hoge");
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test_util_replace_whitespace_one(" ", "");
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test_util_replace_whitespace_one("hoge ", "hoge");
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test_util_replace_whitespace_one_len("hoge hoge ", 9, "hoge_hoge");
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test_util_replace_whitespace_one_len("hoge hoge ", 8, "hoge_hog");
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test_util_replace_whitespace_one_len("hoge hoge ", 7, "hoge_ho");
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test_util_replace_whitespace_one_len("hoge hoge ", 6, "hoge_h");
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test_util_replace_whitespace_one_len("hoge hoge ", 5, "hoge");
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test_util_replace_whitespace_one_len("hoge hoge ", 4, "hoge");
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test_util_replace_whitespace_one_len("hoge hoge ", 3, "hog");
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test_util_replace_whitespace_one_len("hoge hoge ", 2, "ho");
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test_util_replace_whitespace_one_len("hoge hoge ", 1, "h");
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test_util_replace_whitespace_one_len("hoge hoge ", 0, "");
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test_util_replace_whitespace_one_len(" hoge hoge ", 16, "hoge_hoge");
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test_util_replace_whitespace_one_len(" hoge hoge ", 15, "hoge_hoge");
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test_util_replace_whitespace_one_len(" hoge hoge ", 14, "hoge_hog");
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test_util_replace_whitespace_one_len(" hoge hoge ", 13, "hoge_ho");
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test_util_replace_whitespace_one_len(" hoge hoge ", 12, "hoge_h");
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test_util_replace_whitespace_one_len(" hoge hoge ", 11, "hoge");
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test_util_replace_whitespace_one_len(" hoge hoge ", 10, "hoge");
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test_util_replace_whitespace_one_len(" hoge hoge ", 9, "hoge");
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test_util_replace_whitespace_one_len(" hoge hoge ", 8, "hoge");
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test_util_replace_whitespace_one_len(" hoge hoge ", 7, "hog");
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test_util_replace_whitespace_one_len(" hoge hoge ", 6, "ho");
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test_util_replace_whitespace_one_len(" hoge hoge ", 5, "h");
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test_util_replace_whitespace_one_len(" hoge hoge ", 4, "");
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test_util_replace_whitespace_one_len(" hoge hoge ", 3, "");
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test_util_replace_whitespace_one_len(" hoge hoge ", 2, "");
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test_util_replace_whitespace_one_len(" hoge hoge ", 1, "");
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test_util_replace_whitespace_one_len(" hoge hoge ", 0, "");
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}
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static void test_util_resolve_subsys_kernel_one(const char *str, bool read_value, int retval, const char *expected) {
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char result[UTIL_PATH_SIZE] = "";
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int r;
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r = util_resolve_subsys_kernel(str, result, sizeof(result), read_value);
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log_info("\"%s\" → expect: \"%s\", %d, actual: \"%s\", %d", str, strnull(expected), retval, result, r);
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assert_se(r == retval);
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if (r >= 0)
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assert_se(streq(result, expected));
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}
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static void test_util_resolve_subsys_kernel(void) {
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log_info("/* %s */", __func__);
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test_util_resolve_subsys_kernel_one("hoge", false, -EINVAL, NULL);
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test_util_resolve_subsys_kernel_one("[hoge", false, -EINVAL, NULL);
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test_util_resolve_subsys_kernel_one("[hoge/foo", false, -EINVAL, NULL);
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test_util_resolve_subsys_kernel_one("[hoge/]", false, -ENODEV, NULL);
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test_util_resolve_subsys_kernel_one("[net/lo]", false, 0, "/sys/devices/virtual/net/lo");
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test_util_resolve_subsys_kernel_one("[net/lo]/", false, 0, "/sys/devices/virtual/net/lo");
|
|
test_util_resolve_subsys_kernel_one("[net/lo]hoge", false, 0, "/sys/devices/virtual/net/lo/hoge");
|
|
test_util_resolve_subsys_kernel_one("[net/lo]/hoge", false, 0, "/sys/devices/virtual/net/lo/hoge");
|
|
|
|
test_util_resolve_subsys_kernel_one("[net/lo]", true, -EINVAL, NULL);
|
|
test_util_resolve_subsys_kernel_one("[net/lo]/", true, -EINVAL, NULL);
|
|
test_util_resolve_subsys_kernel_one("[net/lo]hoge", true, 0, "");
|
|
test_util_resolve_subsys_kernel_one("[net/lo]/hoge", true, 0, "");
|
|
test_util_resolve_subsys_kernel_one("[net/lo]address", true, 0, "00:00:00:00:00:00");
|
|
test_util_resolve_subsys_kernel_one("[net/lo]/address", true, 0, "00:00:00:00:00:00");
|
|
}
|
|
|
|
static void test_list(void) {
|
|
struct udev_list list = {};
|
|
struct udev_list_entry *e;
|
|
|
|
/* empty list */
|
|
udev_list_init(&list, false);
|
|
assert_se(!udev_list_get_entry(&list));
|
|
|
|
/* unique == false */
|
|
udev_list_init(&list, 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"));
|
|
udev_list_cleanup(&list);
|
|
|
|
/* unique == true */
|
|
udev_list_init(&list, 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"));
|
|
udev_list_cleanup(&list);
|
|
}
|
|
|
|
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_util_replace_whitespace();
|
|
test_util_resolve_subsys_kernel();
|
|
|
|
test_list();
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_MAIN_FUNCTION(run);
|