*
* Userspace devfs
*
- * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
- *
+ * Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
*
* 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
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
-#include <fcntl.h>
-#include <unistd.h>
#include <errno.h>
#include <ctype.h>
+#include <signal.h>
#include "udev.h"
#include "udev_version.h"
+#include "udev_dbus.h"
+#include "logging.h"
#include "namedev.h"
#include "udevdb.h"
#include "libsysfs/libsysfs.h"
char **main_argv;
char **main_envp;
+static void sig_handler(int signum)
+{
+ dbg("caught signal %d", signum);
+ switch (signum) {
+ case SIGINT:
+ case SIGTERM:
+ sysbus_disconnect();
+ udevdb_exit();
+ exit(20 + signum);
+ break;
+ default:
+ dbg("unhandled signal");
+ }
+}
+
static inline char *get_action(void)
{
char *action;
return seqnum;
}
-#ifdef USE_DBUS
-
-/** Global variable for the connection the to system message bus or #NULL
- * if we cannot connect or acquire the org.kernel.udev service
- */
-DBusConnection* sysbus_connection;
-
-/** Disconnect from the system message bus */
-static void sysbus_disconnect()
-{
- if (sysbus_connection == NULL)
- return;
-
- dbus_connection_disconnect(sysbus_connection);
- sysbus_connection = NULL;
-}
-
-/** Connect to the system message bus */
-static void sysbus_connect()
-{
- 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;
- }
-}
-
-#endif /* USE_DBUS */
+static char *subsystem_blacklist[] = {
+ "net",
+ "scsi_host",
+ "scsi_device",
+ "usb_host",
+ "pci_bus",
+ "",
+};
-int main(int argc, char **argv, char **envp)
+static int udev_hotplug(int argc, char **argv)
{
char *action;
char *devpath;
char *subsystem;
int retval = -EINVAL;
-
- main_argv = argv;
- main_envp = envp;
+ int i;
- dbg("version %s", UDEV_VERSION);
-
- if (argc != 2) {
- dbg ("unknown number of arguments");
+ action = get_action();
+ if (!action) {
+ dbg ("no action?");
goto exit;
}
- subsystem = argv[1];
-
devpath = get_devpath();
if (!devpath) {
dbg ("no devpath?");
goto exit;
}
- /* but we don't care about net class devices */
- if (strcmp(subsystem, "net") == 0) {
- dbg("don't care about net devices");
- goto exit;
+ /* skip blacklisted subsystems */
+ subsystem = argv[1];
+ i = 0;
+ while (subsystem_blacklist[i][0] != '\0') {
+ if (strcmp(subsystem, subsystem_blacklist[i]) == 0) {
+ dbg("don't care about '%s' devices", subsystem);
+ goto exit;
+ }
+ i++;
}
- action = get_action();
- if (!action) {
- dbg ("no action?");
- goto exit;
- }
+ /* connect to the system message bus */
+ sysbus_connect();
/* initialize our configuration */
udev_init_config();
-#ifdef USE_DBUS
- /* connect to the system message bus */
- sysbus_connect();
-#endif /* USE_DBUS */
-
/* initialize udev database */
retval = udevdb_init(UDEVDB_DEFAULT);
if (retval != 0) {
dbg("unable to initialize database");
- goto exit;
+ goto exit_sysbus;
}
+ /* set up a default signal handler for now */
+ signal(SIGINT, sig_handler);
+ signal(SIGTERM, sig_handler);
+
/* initialize the naming deamon */
namedev_init();
}
udevdb_exit();
-#ifdef USE_DBUS
- /* disconnect from the system message bus */
- sysbus_disconnect();
-#endif /* USE_DBUS */
+exit_sysbus:
+ /* disconnect from the system message bus */
+ sysbus_disconnect();
+
+exit:
+ if (retval > 0)
+ retval = 0;
-exit:
- return retval;
+ return -retval;
}
+
+int main(int argc, char **argv, char **envp)
+{
+ main_argv = argv;
+ main_envp = envp;
+
+ dbg("version %s", UDEV_VERSION);
+
+ return udev_hotplug(argc, argv);
+}
+
+
~ianmdlvl / elogind.git / blobdiff