/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* 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 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(NM_MAKE_STRV("atm"), 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_destroy(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;
}