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/***************************************************************************
*
* hotplug.c : HAL-internal hotplug events
*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Licensed under the Academic Free License version 2.1
*
**************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/utsname.h>
#include <unistd.h>
#include <glib.h>
#include <dbus/dbus.h>
#include <dbus/dbus-glib.h>
#include "../osspec.h"
#include "../logger.h"
#include "../hald.h"
#include "../device_info.h"
#include "osspec_solaris.h"
#include "hotplug.h"
#include "devinfo.h"
/** Queue of ordered hotplug events */
GQueue *hotplug_event_queue;
/** List of HotplugEvent objects we are currently processing */
GSList *hotplug_events_in_progress = NULL;
static void hotplug_event_begin (HotplugEvent *hotplug_event);
void
hotplug_event_end (void *end_token)
{
HotplugEvent *hotplug_event = (HotplugEvent *) end_token;
hotplug_events_in_progress = g_slist_remove (hotplug_events_in_progress, hotplug_event);
g_free (hotplug_event);
hotplug_event_process_queue ();
}
static void
hotplug_event_begin_devfs_add (HotplugEvent *hotplug_event, HalDevice *d)
{
HalDevice *parent;
const gchar *parent_udi;
void (*begin_add_func) (HalDevice *, HalDevice *, DevinfoDevHandler *, void *);
if (d != NULL) {
/* XXX */
HAL_ERROR (("devpath %s already present in store, ignore event", hotplug_event->un.devfs.devfs_path));
goto out;
}
/* find parent */
parent_udi = hal_device_property_get_string (hotplug_event->d, "info.parent");
if (parent_udi == NULL || strlen(parent_udi) == 0) {
parent = NULL;
} else {
parent = hal_device_store_match_key_value_string (hald_get_gdl (), "info.udi", parent_udi);
}
/* only root node is allowed to be orphan */
if (parent == NULL) {
if (strcmp(hotplug_event->un.devfs.devfs_path, "/") != 0) {
HAL_ERROR (("Parent is NULL devfs_path=%s parent_udi=%s", hotplug_event->un.devfs.devfs_path, parent_udi ? parent_udi : "<null>"));
goto out;
}
}
/* children of ignored parent should be ignored */
if (parent != NULL && hal_device_property_get_bool (parent, "info.ignore")) {
HAL_INFO (("parent ignored %s", parent_udi));
goto out;
}
/* custom or generic add function */
begin_add_func = hotplug_event->un.devfs.handler->hotplug_begin_add;
if (begin_add_func == NULL) {
begin_add_func = hotplug_event_begin_add_devinfo;
}
begin_add_func (hotplug_event->d,
parent,
hotplug_event->un.devfs.handler,
(void *) hotplug_event);
return;
out:
g_object_unref (hotplug_event->d);
hotplug_event_end ((void *) hotplug_event);
return;
}
static void
hotplug_event_begin_devfs_remove (HotplugEvent *hotplug_event, HalDevice *d)
{
if (d == NULL) {
HAL_ERROR (("devpath %s not present in store, ignore event", hotplug_event->un.devfs.devfs_path));
hotplug_event_end ((void *) hotplug_event);
return;
}
HAL_INFO (("hotplug_event_begin_devfs_remove %s", hal_device_get_udi (d)));
hotplug_event_begin_remove_devinfo(d,
hotplug_event->un.devfs.devfs_path,
(void *) hotplug_event);
}
static void
hotplug_event_begin_devfs (HotplugEvent *hotplug_event)
{
HalDevice *d;
HAL_INFO (("hotplug_event_begin_devfs: %s", hotplug_event->un.devfs.devfs_path));
d = hal_device_store_match_key_value_string (hald_get_gdl (),
"solaris.devfs_path",
hotplug_event->un.devfs.devfs_path);
if (hotplug_event->action == HOTPLUG_ACTION_ADD) {
hotplug_event_begin_devfs_add (hotplug_event, d);
} else if (hotplug_event->action == HOTPLUG_ACTION_REMOVE) {
hotplug_event_begin_devfs_remove (hotplug_event, d);
} else {
HAL_ERROR (("unsupported action %d", hotplug_event->action));
g_object_unref (hotplug_event->d);
hotplug_event_end ((void *) hotplug_event);
}
}
static void
hotplug_event_begin (HotplugEvent *hotplug_event)
{
switch (hotplug_event->type) {
case HOTPLUG_EVENT_DEVFS:
hotplug_event_begin_devfs (hotplug_event);
break;
default:
HAL_ERROR (("Unknown hotplug event type %d", hotplug_event->type));
g_object_unref (hotplug_event->d);
hotplug_event_end ((void *) hotplug_event);
break;
}
}
void
hotplug_event_enqueue (HotplugEvent *hotplug_event, int front)
{
if (hotplug_event_queue == NULL)
hotplug_event_queue = g_queue_new ();
if (front) {
g_queue_push_head (hotplug_event_queue, hotplug_event);
} else {
g_queue_push_tail (hotplug_event_queue, hotplug_event);
}
}
void
hotplug_event_process_queue (void)
{
HotplugEvent *hotplug_event;
if (hotplug_events_in_progress == NULL &&
(hotplug_event_queue == NULL || g_queue_is_empty (hotplug_event_queue))) {
hotplug_queue_now_empty ();
goto out;
}
/* do not process events if some other event is in progress */
if (hotplug_events_in_progress != NULL && g_slist_length (hotplug_events_in_progress) > 0)
goto out;
hotplug_event = g_queue_pop_head (hotplug_event_queue);
if (hotplug_event == NULL)
goto out;
hotplug_events_in_progress = g_slist_append (hotplug_events_in_progress, hotplug_event);
hotplug_event_begin (hotplug_event);
out:
;
}
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