// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2009 - 2013 Red Hat, Inc.
*/
#include "nm-default.h"
#include <gmodule.h>
#include <libudev.h>
#include "nm-setting-adsl.h"
#include "nm-device-adsl.h"
#include "devices/nm-device-factory.h"
#include "platform/nm-platform.h"
#include "nm-udev-aux/nm-udev-utils.h"
/*****************************************************************************/
#define NM_TYPE_ATM_MANAGER (nm_atm_manager_get_type ())
#define NM_ATM_MANAGER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_ATM_MANAGER, NMAtmManager))
#define NM_ATM_MANAGER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_ATM_MANAGER, NMAtmManagerClass))
#define NM_IS_ATM_MANAGER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_ATM_MANAGER))
#define NM_IS_ATM_MANAGER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_ATM_MANAGER))
#define NM_ATM_MANAGER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_ATM_MANAGER, NMAtmManagerClass))
typedef struct {
NMUdevClient *udev_client;
GSList *devices;
} NMAtmManagerPrivate;
typedef struct {
NMDeviceFactory parent;
NMAtmManagerPrivate _priv;
} NMAtmManager;
typedef struct {
NMDeviceFactoryClass parent;
} NMAtmManagerClass;
static GType nm_atm_manager_get_type (void);
G_DEFINE_TYPE (NMAtmManager, nm_atm_manager, NM_TYPE_DEVICE_FACTORY);
#define NM_ATM_MANAGER_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMAtmManager, NM_IS_ATM_MANAGER)
/*****************************************************************************/
NM_DEVICE_FACTORY_DECLARE_TYPES (
NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES (NM_SETTING_ADSL_SETTING_NAME)
);
G_MODULE_EXPORT NMDeviceFactory *
nm_device_factory_create (GError **error)
{
return (NMDeviceFactory *) g_object_new (NM_TYPE_ATM_MANAGER, NULL);
}
/*****************************************************************************/
static gboolean
dev_get_attrs (struct udev_device *udev_device,
const char **out_path,
char **out_driver)
{
struct udev_device *parent = NULL;
const char *driver, *path;
g_return_val_if_fail (udev_device != NULL, FALSE);
g_return_val_if_fail (out_path != NULL, FALSE);
g_return_val_if_fail (out_driver != NULL, FALSE);
path = udev_device_get_syspath (udev_device);
if (!path) {
nm_log_warn (LOGD_PLATFORM, "couldn't determine device path; ignoring...");
return FALSE;
}
driver = udev_device_get_driver (udev_device);
if (!driver) {
/* Try the parent */
parent = udev_device_get_parent (udev_device);
if (parent)
driver = udev_device_get_driver (parent);
}
*out_path = path;
*out_driver = g_strdup (driver);
return TRUE;
}
static void
device_destroyed (gpointer user_data, GObject *dead)
{
NMAtmManager *self = NM_ATM_MANAGER (user_data);
NMAtmManagerPrivate *priv = NM_ATM_MANAGER_GET_PRIVATE (self);
priv->devices = g_slist_remove (priv->devices, dead);
}
static void
adsl_add (NMAtmManager *self, struct udev_device *udev_device)
{
NMAtmManagerPrivate *priv = NM_ATM_MANAGER_GET_PRIVATE (self);
const char *ifname, *sysfs_path = NULL;
char *driver = NULL;
gs_free char *atm_index_path = NULL;
int atm_index;
NMDevice *device;
g_return_if_fail (udev_device != NULL);
ifname = udev_device_get_sysname (udev_device);
if (!ifname) {
nm_log_warn (LOGD_PLATFORM, "failed to get device's interface name");
return;
}
nm_log_dbg (LOGD_PLATFORM, "(%s): found ATM device", ifname);
atm_index_path = g_strdup_printf ("/sys/class/atm/%s/atmindex",
NM_ASSERT_VALID_PATH_COMPONENT (ifname));
atm_index = (int) nm_platform_sysctl_get_int_checked (NM_PLATFORM_GET,
NMP_SYSCTL_PATHID_ABSOLUTE (atm_index_path),
10, 0, G_MAXINT,
-1);
if (atm_index < 0) {
nm_log_warn (LOGD_PLATFORM, "(%s): failed to get ATM index", ifname);
return;
}
if (!dev_get_attrs (udev_device, &sysfs_path, &driver)) {
nm_log_warn (LOGD_PLATFORM, "(%s): failed to get ATM attributes", ifname);
return;
}
g_assert (sysfs_path);
device = nm_device_adsl_new (sysfs_path, ifname, driver, atm_index);
g_assert (device);
priv->devices = g_slist_prepend (priv->devices, device);
g_object_weak_ref (G_OBJECT (device), device_destroyed, self);
g_signal_emit_by_name (self, NM_DEVICE_FACTORY_DEVICE_ADDED, device);
g_object_unref (device);
g_free (driver);
}
static void
adsl_remove (NMAtmManager *self, struct udev_device *udev_device)
{
NMAtmManagerPrivate *priv = NM_ATM_MANAGER_GET_PRIVATE (self);
const char *iface = udev_device_get_sysname (udev_device);
GSList *iter;
nm_log_dbg (LOGD_PLATFORM, "(%s): removing ATM device", iface);
for (iter = priv->devices; iter; iter = iter->next) {
NMDevice *device = iter->data;
/* Match 'iface' not 'ip_iface' to the ATM device instead of the
* NAS bridge interface or PPPoE interface.
*/
if (g_strcmp0 (nm_device_get_iface (device), iface) != 0)
continue;
g_object_weak_unref (G_OBJECT (iter->data), device_destroyed, self);
priv->devices = g_slist_remove (priv->devices, device);
g_signal_emit_by_name (device, NM_DEVICE_REMOVED);
break;
}
}
static void
start (NMDeviceFactory *factory)
{
NMAtmManager *self = NM_ATM_MANAGER (factory);
NMAtmManagerPrivate *priv = NM_ATM_MANAGER_GET_PRIVATE (self);
struct udev_enumerate *enumerate;
struct udev_list_entry *devices;
enumerate = nm_udev_client_enumerate_new (priv->udev_client);
udev_enumerate_add_match_is_initialized (enumerate);
udev_enumerate_scan_devices (enumerate);
devices = udev_enumerate_get_list_entry (enumerate);
for (; devices; devices = udev_list_entry_get_next (devices)) {
struct udev_device *udevice;
udevice = udev_device_new_from_syspath (udev_enumerate_get_udev (enumerate),
udev_list_entry_get_name (devices));
if (udevice) {
adsl_add (self, udevice);
udev_device_unref (udevice);
}
}
udev_enumerate_unref (enumerate);
}
static void
handle_uevent (NMUdevClient *client,
struct udev_device *device,
gpointer user_data)
{
NMAtmManager *self = NM_ATM_MANAGER (user_data);
const char *subsys;
const char *ifindex;
guint64 seqnum;
const char *action;
action = udev_device_get_action (device);
g_return_if_fail (action != NULL);
/* A bit paranoid */
subsys = udev_device_get_subsystem (device);
g_return_if_fail (!g_strcmp0 (subsys, "atm"));
ifindex = udev_device_get_property_value (device, "IFINDEX");
seqnum = udev_device_get_seqnum (device);
nm_log_dbg (LOGD_PLATFORM, "UDEV event: action '%s' subsys '%s' device '%s' (%s); seqnum=%" G_GUINT64_FORMAT,
action, subsys, udev_device_get_sysname (device), ifindex ?: "unknown", seqnum);
if (!strcmp (action, "add"))
adsl_add (self, device);
else if (!strcmp (action, "remove"))
adsl_remove (self, device);
}
/*****************************************************************************/
static void
nm_atm_manager_init (NMAtmManager *self)
{
NMAtmManagerPrivate *priv = NM_ATM_MANAGER_GET_PRIVATE (self);
priv->udev_client = nm_udev_client_new ((const char *[]) {"atm", NULL },
handle_uevent, self);
}
static void
dispose (GObject *object)
{
NMAtmManager *self = NM_ATM_MANAGER (object);
NMAtmManagerPrivate *priv = NM_ATM_MANAGER_GET_PRIVATE (self);
GSList *iter;
for (iter = priv->devices; iter; iter = iter->next)
g_object_weak_unref (G_OBJECT (iter->data), device_destroyed, self);
nm_clear_pointer (&priv->devices, g_slist_free);
priv->udev_client = nm_udev_client_unref (priv->udev_client);
G_OBJECT_CLASS (nm_atm_manager_parent_class)->dispose (object);
}
static void
nm_atm_manager_class_init (NMAtmManagerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
NMDeviceFactoryClass *factory_class = NM_DEVICE_FACTORY_CLASS (klass);
object_class->dispose = dispose;
factory_class->get_supported_types = get_supported_types;
factory_class->start = start;
}