test-libudev.c revision e14bdd88e9796ec3c70966dd1899add6667431f5
17N/A/*
17N/A * test-libudev
17N/A *
17N/A * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
17N/A *
17N/A * This library is free software; you can redistribute it and/or
17N/A * modify it under the terms of the GNU Lesser General Public
17N/A * License as published by the Free Software Foundation; either
17N/A * version 2.1 of the License, or (at your option) any later version.
17N/A */
17N/A
17N/A#include <stdio.h>
17N/A#include <stdarg.h>
17N/A#include <stdlib.h>
17N/A#include <unistd.h>
17N/A#include <errno.h>
17N/A#include <string.h>
17N/A#include <getopt.h>
17N/A#include <syslog.h>
17N/A#include <fcntl.h>
17N/A#include <sys/select.h>
17N/A
17N/A#include "libudev.h"
17N/A
17N/Astatic void log_fn(struct udev *udev,
17N/A int priority, const char *file, int line, const char *fn,
17N/A const char *format, va_list args)
17N/A{
17N/A printf("test-libudev: %s %s:%d ", fn, file, line);
17N/A vprintf(format, args);
156N/A}
17N/A
17N/Astatic void print_device(struct udev_device *device)
17N/A{
17N/A const char *str;
17N/A dev_t devnum;
17N/A int count;
17N/A struct udev_list_entry *list_entry;
17N/A
17N/A printf("*** device: %p ***\n", device);
17N/A str = udev_device_get_action(device);
156N/A if (str != NULL)
17N/A printf("action: '%s'\n", str);
17N/A
17N/A str = udev_device_get_syspath(device);
17N/A printf("syspath: '%s'\n", str);
17N/A
17N/A str = udev_device_get_sysname(device);
17N/A printf("sysname: '%s'\n", str);
17N/A
17N/A str = udev_device_get_sysnum(device);
17N/A if (str != NULL)
17N/A printf("sysnum: '%s'\n", str);
17N/A
17N/A str = udev_device_get_devpath(device);
17N/A printf("devpath: '%s'\n", str);
17N/A
17N/A str = udev_device_get_subsystem(device);
17N/A if (str != NULL)
17N/A printf("subsystem: '%s'\n", str);
17N/A
17N/A str = udev_device_get_devtype(device);
17N/A if (str != NULL)
49N/A printf("devtype: '%s'\n", str);
17N/A
17N/A str = udev_device_get_driver(device);
17N/A if (str != NULL)
17N/A 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;
fd_set readfds;
int fd;
udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
if (udev_monitor == NULL) {
printf("no socket\n");
return -1;
}
if (udev_monitor_filter_add_match_subsystem(udev_monitor, "block") < 0 ||
udev_monitor_filter_add_match_subsystem(udev_monitor, "tty") < 0 ||
udev_monitor_filter_add_match_subsystem(udev_monitor, "usb") < 0) {
printf("filter failed\n");
return -1;
}
if (udev_monitor_enable_receiving(udev_monitor) < 0) {
printf("bind failed\n");
return -1;
}
fd = udev_monitor_get_fd(udev_monitor);
FD_ZERO(&readfds);
while (1) {
struct udev_device *device;
int fdcount;
FD_SET(STDIN_FILENO, &readfds);
FD_SET(fd, &readfds);
printf("waiting for events from udev, press ENTER to exit\n");
fdcount = select(fd+1, &readfds, NULL, NULL, NULL);
printf("select fd count: %i\n", fdcount);
if (FD_ISSET(fd, &readfds)) {
device = udev_monitor_receive_device(udev_monitor);
if (device == NULL) {
printf("no device from socket\n");
sleep(1);
continue;
}
print_device(device);
udev_device_unref(device);
}
if (FD_ISSET(STDIN_FILENO, &readfds)) {
printf("exiting loop\n");
break;
}
}
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");
printf("get failed list\n");
udev_list_entry_foreach(list_entry, udev_queue_get_failed_list_entry(udev_queue))
printf("failed: '%s'\n", udev_list_entry_get_name(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 'block'\n");
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
udev_enumerate_add_match_subsystem(udev_enumerate,"block");
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;
}
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];
const char *str;
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);
while (1) {
int option;
option = getopt_long(argc, argv, "+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;
}
}
str = udev_get_sys_path(udev);
printf("sys_path: '%s'\n", str);
str = udev_get_dev_path(udev);
printf("dev_path: '%s'\n", str);
/* add sys path if needed */
if (strncmp(syspath, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) {
snprintf(path, sizeof(path), "%s%s", udev_get_sys_path(udev), 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_monitor(udev);
out:
udev_unref(udev);
return 0;
}