* 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 <getopt.h>
+#include <syslog.h>
+#include <sys/select.h>
+
#include "libudev.h"
static void log_fn(struct udev *udev,
vprintf(format, args);
}
-static int devlinks_cb(struct udev_device *udev_device, const char *value, void *data)
+static int print_devlinks_cb(struct udev_device *udev_device, const char *value, void *data)
{
- printf("link: %s\n", value);
+ printf("link: '%s'\n", value);
return 0;
}
-static int devices_enum_cb(struct udev *udev,
- const char *devpath, const char *subsystem, const char *name,
- void *data)
+static int print_properties_cb(struct udev_device *udev_device, const char *key, const char *value, void *data)
{
- printf("device: %s (%s) %s\n", devpath, subsystem, name);
+ printf("property: '%s=%s'\n", key, value);
return 0;
}
-static int properties_cb(struct udev_device *udev_device, const char *key, const char *value, void *data)
+static void print_device(struct udev_device *device)
+{
+ const char *str;
+ int count;
+
+ printf("*** device: %p ***\n", device);
+ str = udev_device_get_action(device);
+ printf("action: '%s'\n", str);
+ str = udev_device_get_syspath(device);
+ printf("syspath: '%s'\n", str);
+ 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_driver(device);
+ printf("driver: '%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 *syspath)
{
- printf("property: %s=%s\n", key, value);
+ 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\n");
+ return -1;
+ }
+ print_device(device);
+ udev_device_unref(device);
return 0;
}
-int main(int argc, char *argv[], char *envp[])
+static int test_device_parents(struct udev *udev, const char *syspath)
{
- struct udev *udev;
struct udev_device *device;
- const char *str;
- const char *devpath = "/devices/virtual/mem/null";
- const char *subsystem = NULL;
+ 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;
+
+ device_parent = device;
+ do {
+ print_device(device_parent);
+ device_parent = udev_device_get_parent(device_parent);
+ } while (device_parent != NULL);
+
+ 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 devices_enum_cb(struct udev_device *device, void *data)
+{
+ printf("device: '%s' (%s) '%s'\n",
+ udev_device_get_syspath(device),
+ udev_device_get_subsystem(device),
+ udev_device_get_sysname(device));
+ return 0;
+}
+
+static int test_enumerate(struct udev *udev, const char *subsystem)
+{
+ int count;
- if (argv[1] != NULL) {
- devpath = argv[1];
- if (argv[2] != NULL)
- subsystem = argv[2];
+ count = udev_enumerate_devices(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;
+ }
+ 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 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_receive_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 = NULL;
+ static const struct option options[] = {
+ { "syspath", 1, NULL, 'p' },
+ { "subsystem", 1, NULL, 's' },
+ { "socket", 1, NULL, 'S' },
+ { "debug", 0, NULL, 'd' },
+ { "help", 0, NULL, 'h' },
+ { "version", 0, NULL, 'V' },
+ {}
+ };
+ const char *syspath = "/devices/virtual/mem/null";
+ const char *subsystem = NULL;
+ const char *socket = "@/org/kernel/udev/monitor";
+ char path[1024];
+ const char *str;
+
udev = udev_new();
printf("context: %p\n", udev);
if (udev == NULL) {
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 'S':
+ socket = 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= --socket= --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);
+ printf("sys_path: '%s'\n", str);
str = udev_get_dev_path(udev);
- printf("dev_path: %s\n", str);
+ printf("dev_path: '%s'\n", str);
- printf("looking at device: %s\n", devpath);
- device = udev_device_new_from_devpath(udev, devpath);
- printf("device: %p\n", device);
- if (device == NULL) {
- printf("no device\n");
- return 1;
+ /* 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;
}
- 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);
- udev_device_get_devlinks(device, devlinks_cb, NULL);
- udev_device_get_properties(device, properties_cb, NULL);
- udev_device_unref(device);
-
- if (subsystem == NULL)
- printf("enumerating devices from all subsystems\n");
- else
- printf("enumerating devices from subsystem: %s\n", subsystem);
- udev_devices_enumerate(udev, subsystem, devices_enum_cb, NULL);
+ test_device(udev, syspath);
+ test_device_parents(udev, syspath);
+ test_enumerate(udev, subsystem);
+ test_monitor(udev, socket);
+out:
udev_unref(udev);
return 0;
}
~ianmdlvl / elogind.git / blobdiff