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/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009, 2010 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

#ifndef DISSECTOR_80211_H
#define DISSECTOR_80211_H

#include "hash.h"
#include "proto.h"
#include "protos.h"
#include "tprintf.h"
#include "xutils.h"
#include "oui.h"

extern struct hash_table ieee80211_lay2;

extern void dissector_init_ieee80211(int fnttype);
extern void dissector_cleanup_ieee80211(void);

#ifdef __WITH_PROTOS
static inline struct protocol *dissector_get_ieee80211_entry_point(void)
{
	return &ieee80211_ops;
}

static inline struct protocol *dissector_get_ieee80211_exit_point(void)
{
	return &none_ops;
}
#else
static inline struct protocol *dissector_get_ieee80211_entry_point(void)
{
	return NULL;
}

static inline struct protocol *dissector_get_ieee80211_exit_point(void)
{
	return NULL;
}
#endif /* __WITH_PROTOS */
#endif /* DISSECTOR_80211_H */
/net-next.git/commit/fs/xfs/libxfs/xfs_defer.h?id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'fs/xfs/libxfs/xfs_defer.h')