From 66aa4a55fe0548c8b13a195c61774db65c5896cd Mon Sep 17 00:00:00 2001 From: Tom Goff Date: Fri, 19 Mar 2010 15:38:50 +0000 Subject: netlink: use the appropriate namespace pid This was included in OpenVZ kernels but wasn't integrated upstream. >From git://git.openvz.org/pub/linux-2.6.24-openvz: commit 5c69402f18adf7276352e051ece2cf31feefab02 Author: Alexey Dobriyan Date: Mon Dec 24 14:37:45 2007 +0300 netlink: fixup ->tgid to work in multiple PID namespaces Signed-off-by: Tom Goff Acked-by: Alexey Dobriyan Signed-off-by: David S. Miller --- net/netlink/af_netlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/netlink') diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index acbbae1e89b..274d977166b 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -545,7 +545,7 @@ static int netlink_autobind(struct socket *sock) struct hlist_head *head; struct sock *osk; struct hlist_node *node; - s32 pid = current->tgid; + s32 pid = task_tgid_vnr(current); int err; static s32 rover = -4097; -- cgit v1.2.3 From f408e0ce40270559ef80f231843c93baa9947bc5 Mon Sep 17 00:00:00 2001 From: James Chapman Date: Fri, 2 Apr 2010 06:19:05 +0000 Subject: netlink: Export genl_lock() API for use by modules This lets kernel modules which use genl netlink APIs serialize netlink processing. Signed-off-by: James Chapman Reviewed-by: Randy Dunlap Signed-off-by: David S. Miller --- include/linux/genetlink.h | 8 ++++++++ net/netlink/genetlink.c | 6 ++++-- 2 files changed, 12 insertions(+), 2 deletions(-) (limited to 'net/netlink') diff --git a/include/linux/genetlink.h b/include/linux/genetlink.h index b834ef6d59f..61549b26ad6 100644 --- a/include/linux/genetlink.h +++ b/include/linux/genetlink.h @@ -80,4 +80,12 @@ enum { #define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1) +#ifdef __KERNEL__ + +/* All generic netlink requests are serialized by a global lock. */ +extern void genl_lock(void); +extern void genl_unlock(void); + +#endif /* __KERNEL__ */ + #endif /* __LINUX_GENERIC_NETLINK_H */ diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index a4b6e148c5d..a28fda7420d 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -20,15 +20,17 @@ static DEFINE_MUTEX(genl_mutex); /* serialization of message processing */ -static inline void genl_lock(void) +void genl_lock(void) { mutex_lock(&genl_mutex); } +EXPORT_SYMBOL(genl_lock); -static inline void genl_unlock(void) +void genl_unlock(void) { mutex_unlock(&genl_mutex); } +EXPORT_SYMBOL(genl_unlock); #define GENL_FAM_TAB_SIZE 16 #define GENL_FAM_TAB_MASK (GENL_FAM_TAB_SIZE - 1) -- cgit v1.2.3