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/*
* test-libudev
*
* Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdio.h>
#include <stdarg.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/select.h>
#include "libudev.h"
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 int print_devlinks_cb(struct udev_device *udev_device, const char *value, void *data)
{
printf("link: '%s'\n", value);
return 0;
}
static int print_properties_cb(struct udev_device *udev_device, const char *key, const char *value, void *data)
{
printf("property: '%s=%s'\n", key, value);
return 0;
}
static void print_device(struct udev_device *device)
{
const char *str;
int count;
printf("*** device: %p ***\n", device);
str = udev_device_get_devpath(device);
printf("devpath: '%s'\n", str);
str = udev_device_get_subsystem(device);
printf("subsystem: '%s'\n", str);
str = udev_device_get_devname(device);
printf("devname: '%s'\n", str);
count = udev_device_get_devlinks(device, print_devlinks_cb, NULL);
printf("found %i links\n", count);
count = udev_device_get_properties(device, print_properties_cb, NULL);
printf("found %i properties\n", count);
printf("\n");
}
static int test_device(struct udev *udev, const char *devpath)
{
struct udev_device *device;
printf("looking at device: %s\n", devpath);
device = udev_device_new_from_devpath(udev, devpath);
if (device == NULL) {
printf("no device\n");
return -1;
}
print_device(device);
udev_device_unref(device);
return 0;
}
static int devices_enum_cb(struct udev *udev,
const char *devpath, const char *subsystem, const char *name,
void *data)
{
printf("device: '%s' (%s) '%s'\n", devpath, subsystem, name);
return 0;
}
static int test_enumerate(struct udev *udev, const char *subsystem)
{
int count;
count = udev_devices_enumerate(udev, subsystem, devices_enum_cb, NULL);
printf("found %i devices\n\n", count);
return count;
}
static int test_monitor(struct udev *udev, const char *socket_path)
{
struct udev_monitor *udev_monitor;
fd_set readfds;
int fd;
udev_monitor = udev_monitor_new_from_socket(udev, socket_path);
if (udev_monitor == NULL) {
printf("no socket\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 on %s, press ENTER to exit\n", socket_path);
fdcount = select(fd+1, &readfds, NULL, NULL, NULL);
printf("select fd count: %i\n", fdcount);
if (FD_ISSET(fd, &readfds)) {
device = udev_monitor_get_device(udev_monitor);
if (device == NULL) {
printf("no device from socket\n");
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;
}
int main(int argc, char *argv[], char *envp[])
{
struct udev *udev;
const char *devpath = "/devices/virtual/mem/null";
const char *subsystem = NULL;
const char *socket = "@/org/kernel/udev/monitor";
const char *str;
if (argv[1] != NULL) {
devpath = argv[1];
if (argv[2] != NULL)
subsystem = argv[2];
if (argv[3] != NULL)
socket = argv[3];
}
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);
str = udev_get_sys_path(udev);
printf("sys_path: '%s'\n", str);
str = udev_get_dev_path(udev);
printf("dev_path: '%s'\n", str);
test_device(udev, devpath);
test_enumerate(udev, subsystem);
test_monitor(udev, socket);
udev_unref(udev);
return 0;
}
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