mirror of
https://github.com/torvalds/linux.git
synced 2024-12-21 10:31:54 +00:00
7eff2e7a8b
This changes the uevent buffer functions to use a struct instead of a long list of parameters. It does no longer require the caller to do the proper buffer termination and size accounting, which is currently wrong in some places. It fixes a known bug where parts of the uevent environment are overwritten because of wrong index calculations. Many thanks to Mathieu Desnoyers for finding bugs and improving the error handling. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
/*
|
|
* This file provides /sys/class/ieee80211/<wiphy name>/
|
|
* and some default attributes.
|
|
*
|
|
* Copyright 2005-2006 Jiri Benc <jbenc@suse.cz>
|
|
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
|
|
*
|
|
* This file is GPLv2 as found in COPYING.
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/module.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/nl80211.h>
|
|
#include <linux/rtnetlink.h>
|
|
#include <net/cfg80211.h>
|
|
#include "sysfs.h"
|
|
#include "core.h"
|
|
|
|
static inline struct cfg80211_registered_device *dev_to_rdev(
|
|
struct device *dev)
|
|
{
|
|
return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
|
|
}
|
|
|
|
static ssize_t _show_index(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return sprintf(buf, "%d\n", dev_to_rdev(dev)->idx);
|
|
}
|
|
|
|
static ssize_t _show_permaddr(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned char *addr = dev_to_rdev(dev)->wiphy.perm_addr;
|
|
|
|
return sprintf(buf, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
|
|
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
|
|
}
|
|
|
|
static struct device_attribute ieee80211_dev_attrs[] = {
|
|
__ATTR(index, S_IRUGO, _show_index, NULL),
|
|
__ATTR(macaddress, S_IRUGO, _show_permaddr, NULL),
|
|
{}
|
|
};
|
|
|
|
static void wiphy_dev_release(struct device *dev)
|
|
{
|
|
struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
|
|
|
|
cfg80211_dev_free(rdev);
|
|
}
|
|
|
|
#ifdef CONFIG_HOTPLUG
|
|
static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
|
|
{
|
|
/* TODO, we probably need stuff here */
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
struct class ieee80211_class = {
|
|
.name = "ieee80211",
|
|
.owner = THIS_MODULE,
|
|
.dev_release = wiphy_dev_release,
|
|
.dev_attrs = ieee80211_dev_attrs,
|
|
#ifdef CONFIG_HOTPLUG
|
|
.dev_uevent = wiphy_uevent,
|
|
#endif
|
|
};
|
|
|
|
int wiphy_sysfs_init(void)
|
|
{
|
|
return class_register(&ieee80211_class);
|
|
}
|
|
|
|
void wiphy_sysfs_exit(void)
|
|
{
|
|
class_unregister(&ieee80211_class);
|
|
}
|