X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Flib%2Ftest-libudev.c;h=39330a74c6cbbe036370008b01db80ec598556c3;hp=e86c660e6488fd1219793b4b90890af756328375;hb=38f27948cdafd8a4b90a6b4f1f54b89891983506;hpb=33a5cc297680f20e791c792a45fe949f715f5f69

diff --git a/udev/lib/test-libudev.c b/udev/lib/test-libudev.c
index e86c660e6..39330a74c 100644
--- a/udev/lib/test-libudev.c
+++ b/udev/lib/test-libudev.c
@@ -17,10 +17,15 @@
  * 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,
@@ -31,40 +36,170 @@ 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) {
@@ -74,34 +209,54 @@ int main(int argc, char *argv[], char *envp[])
 	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;
 }