+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <ctype.h>
+
#define DBUS_API_SUBJECT_TO_CHANGE
#include <dbus/dbus.h>
+#include "udev.h"
+#include "udev_version.h"
#include "udev_dbus.h"
+#include "logging.h"
+
+#ifdef LOG
+unsigned char logname[LOGNAME_SIZE];
+void log_message(int level, const char *format, ...)
+{
+ va_list args;
+ if (!udev_log)
+ return;
+
+ va_start(args, format);
+ vsyslog(level, format, args);
+ va_end(args);
+}
+#endif
/** variable for the connection the to system message bus or #NULL
* if we cannot connect or acquire the org.kernel.udev service
static DBusConnection* sysbus_connection;
/** Disconnect from the system message bus */
-void sysbus_disconnect(void)
+static void sysbus_disconnect(void)
{
- if (sysbus_connection == NULL)
- return;
+ if (sysbus_connection == NULL)
+ return;
- dbus_connection_disconnect(sysbus_connection);
- sysbus_connection = NULL;
+ dbus_connection_disconnect(sysbus_connection);
+ sysbus_connection = NULL;
}
/** Connect to the system message bus */
-void sysbus_connect(void)
+static void sysbus_connect(void)
{
- DBusError error;
-
- /* Connect to a well-known bus instance, the system bus */
- dbus_error_init(&error);
- sysbus_connection = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
- if (sysbus_connection == NULL) {
- dbg("cannot connect to system message bus, error %s: %s",
- error.name, error.message);
- dbus_error_free(&error);
- return;
- }
-
- /* Acquire the org.kernel.udev service such that listeners
- * know that the message is really from us and not from a
- * random attacker. See the file udev_sysbus_policy.conf for
- * details.
- *
- * Note that a service can have multiple owners (though there
- * is a concept of a primary owner for reception of messages)
- * so no race is introduced if two copies of udev is running
- * at the same time.
- */
- dbus_bus_acquire_service(sysbus_connection, "org.kernel.udev", 0,
- &error);
- if (dbus_error_is_set(&error)) {
- printf("cannot acquire org.kernel.udev service, error %s: %s'",
- error.name, error.message);
- sysbus_disconnect();
- return;
- }
+ DBusError error;
+
+ /* Connect to a well-known bus instance, the system bus */
+ dbus_error_init(&error);
+ sysbus_connection = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
+ if (sysbus_connection == NULL) {
+ dbg("cannot connect to system message bus, error %s: %s",
+ error.name, error.message);
+ dbus_error_free(&error);
+ return;
+ }
+
+ /* Acquire the org.kernel.udev service such that listeners
+ * know that the message is really from us and not from a
+ * random attacker. See the file udev_sysbus_policy.conf for
+ * details.
+ *
+ * Note that a service can have multiple owners (though there
+ * is a concept of a primary owner for reception of messages)
+ * so no race is introduced if two copies of udev is running
+ * at the same time.
+ */
+ dbus_bus_acquire_service(sysbus_connection, "org.kernel.udev", 0,
+ &error);
+ if (dbus_error_is_set(&error)) {
+ printf("cannot acquire org.kernel.udev service, error %s: %s'",
+ error.name, error.message);
+ sysbus_disconnect();
+ return;
+ }
}
/** Send out a signal that a device node is created
*
- * @param dev udevice object
+ * @param devnode name of the device node, e.g. /dev/sda1
* @param path Sysfs path of device
*/
-void sysbus_send_create(struct udevice *dev, const char *path)
+static void sysbus_send_create(const char *devnode, const char *path)
{
- char filename[255];
- DBusMessage* message;
- DBusMessageIter iter;
-
- if (sysbus_connection == NULL)
- return;
-
- strncpy(filename, udev_root, sizeof(filename));
- strncat(filename, dev->name, sizeof(filename));
-
- /* object, interface, member */
- message = dbus_message_new_signal("/org/kernel/udev/NodeMonitor",
- "org.kernel.udev.NodeMonitor",
- "NodeCreated");
-
- dbus_message_iter_init(message, &iter);
- dbus_message_iter_append_string(&iter, filename);
- dbus_message_iter_append_string(&iter, path);
-
- if ( !dbus_connection_send(sysbus_connection, message, NULL) )
- dbg("error sending d-bus signal");
-
- dbus_message_unref(message);
-
- dbus_connection_flush(sysbus_connection);
+ DBusMessage* message;
+ DBusMessageIter iter;
+
+ /* object, interface, member */
+ message = dbus_message_new_signal("/org/kernel/udev/NodeMonitor",
+ "org.kernel.udev.NodeMonitor",
+ "NodeCreated");
+
+ dbus_message_iter_init(message, &iter);
+ dbus_message_iter_append_string(&iter, devnode);
+ dbus_message_iter_append_string(&iter, path);
+
+ if ( !dbus_connection_send(sysbus_connection, message, NULL) )
+ dbg("error sending d-bus signal");
+
+ dbus_message_unref(message);
+
+ dbus_connection_flush(sysbus_connection);
}
/** Send out a signal that a device node is deleted
*
- * @param name Name of the device node, e.g. /udev/sda1
+ * @param devnode Name of the device node, e.g. /udev/sda1
* @param path Sysfs path of device
*/
-void sysbus_send_remove(const char* name, const char *path)
+static void sysbus_send_remove(const char *devnode, const char *path)
{
- char filename[255];
- DBusMessage* message;
- DBusMessageIter iter;
-
- if (sysbus_connection == NULL)
- return;
-
- strncpy(filename, udev_root, sizeof(filename));
- strncat(filename, name, sizeof(filename));
-
- /* object, interface, member */
- message = dbus_message_new_signal("/org/kernel/udev/NodeMonitor",
- "org.kernel.udev.NodeMonitor",
- "NodeDeleted");
-
- dbus_message_iter_init(message, &iter);
- dbus_message_iter_append_string(&iter, filename);
- dbus_message_iter_append_string(&iter, path);
-
- if ( !dbus_connection_send(sysbus_connection, message, NULL) )
- dbg("error sending d-bus signal");
-
- dbus_message_unref(message);
-
- dbus_connection_flush(sysbus_connection);
-}
+ DBusMessage* message;
+ DBusMessageIter iter;
+
+ /* object, interface, member */
+ message = dbus_message_new_signal("/org/kernel/udev/NodeMonitor",
+ "org.kernel.udev.NodeMonitor",
+ "NodeDeleted");
+
+ dbus_message_iter_init(message, &iter);
+ dbus_message_iter_append_string(&iter, devnode);
+ dbus_message_iter_append_string(&iter, path);
+
+ if ( !dbus_connection_send(sysbus_connection, message, NULL) )
+ dbg("error sending d-bus signal");
+ dbus_message_unref(message);
+ dbus_connection_flush(sysbus_connection);
+}
+
+int main(int argc, char *argv[], char *envp[])
+{
+ char *action;
+ char *devpath;
+ char *devnode;
+ int retval = 0;
+
+ init_logging("udev_dbus");
+
+ sysbus_connect();
+ if (sysbus_connection == NULL)
+ return;
+
+ action = get_action();
+ if (!action) {
+ dbg("no action?");
+ goto exit;
+ }
+ devpath = get_devpath();
+ if (!devpath) {
+ dbg("no devpath?");
+ goto exit;
+ }
+ devnode = get_devnode();
+ if (!devnode) {
+ dbg("no devnode?");
+ goto exit;
+ }
+
+ if (strcmp(action, "add") == 0) {
+ sysbus_send_create(devnode, devpath);
+ } else {
+ if (strcmp(action, "remove") == 0) {
+ sysbus_send_remove(devnode, devpath);
+ } else {
+ dbg("unknown action '%s'", action);
+ retval = -EINVAL;
+ }
+ }
+
+exit:
+ sysbus_disconnect();
+ return retval;
+}
~ianmdlvl / elogind.git / blobdiff