diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netlink.h | 128 |
1 files changed, 1 insertions, 127 deletions
diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 1235669..f55ed8c 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -70,7 +70,7 @@ struct nlmsghdr { Check NLM_F_EXCL */ -#define NLMSG_ALIGNTO 4 +#define NLMSG_ALIGNTO 4U #define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) ) #define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr))) #define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN)) @@ -144,131 +144,5 @@ struct nlattr { #define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1)) #define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr))) -#ifdef __KERNEL__ - -#include <linux/capability.h> -#include <linux/skbuff.h> - -struct net; - -static inline struct nlmsghdr *nlmsg_hdr(const struct sk_buff *skb) -{ - return (struct nlmsghdr *)skb->data; -} - -struct netlink_skb_parms { - struct ucred creds; /* Skb credentials */ - __u32 pid; - __u32 dst_group; - kernel_cap_t eff_cap; - __u32 loginuid; /* Login (audit) uid */ - __u32 sessionid; /* Session id (audit) */ - __u32 sid; /* SELinux security id */ -}; - -#define NETLINK_CB(skb) (*(struct netlink_skb_parms*)&((skb)->cb)) -#define NETLINK_CREDS(skb) (&NETLINK_CB((skb)).creds) - - -extern void netlink_table_grab(void); -extern void netlink_table_ungrab(void); - -extern struct sock *netlink_kernel_create(struct net *net, - int unit,unsigned int groups, - void (*input)(struct sk_buff *skb), - struct mutex *cb_mutex, - struct module *module); -extern void netlink_kernel_release(struct sock *sk); -extern int __netlink_change_ngroups(struct sock *sk, unsigned int groups); -extern int netlink_change_ngroups(struct sock *sk, unsigned int groups); -extern void __netlink_clear_multicast_users(struct sock *sk, unsigned int group); -extern void netlink_clear_multicast_users(struct sock *sk, unsigned int group); -extern void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err); -extern int netlink_has_listeners(struct sock *sk, unsigned int group); -extern int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 pid, int nonblock); -extern int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, __u32 pid, - __u32 group, gfp_t allocation); -extern int netlink_broadcast_filtered(struct sock *ssk, struct sk_buff *skb, - __u32 pid, __u32 group, gfp_t allocation, - int (*filter)(struct sock *dsk, struct sk_buff *skb, void *data), - void *filter_data); -extern int netlink_set_err(struct sock *ssk, __u32 pid, __u32 group, int code); -extern int netlink_register_notifier(struct notifier_block *nb); -extern int netlink_unregister_notifier(struct notifier_block *nb); - -/* finegrained unicast helpers: */ -struct sock *netlink_getsockbyfilp(struct file *filp); -int netlink_attachskb(struct sock *sk, struct sk_buff *skb, - long *timeo, struct sock *ssk); -void netlink_detachskb(struct sock *sk, struct sk_buff *skb); -int netlink_sendskb(struct sock *sk, struct sk_buff *skb); - -/* - * skb should fit one page. This choice is good for headerless malloc. - * But we should limit to 8K so that userspace does not have to - * use enormous buffer sizes on recvmsg() calls just to avoid - * MSG_TRUNC when PAGE_SIZE is very large. - */ -#if PAGE_SIZE < 8192UL -#define NLMSG_GOODSIZE SKB_WITH_OVERHEAD(PAGE_SIZE) -#else -#define NLMSG_GOODSIZE SKB_WITH_OVERHEAD(8192UL) -#endif - -#define NLMSG_DEFAULT_SIZE (NLMSG_GOODSIZE - NLMSG_HDRLEN) - - -struct netlink_callback { - struct sk_buff *skb; - const struct nlmsghdr *nlh; - int (*dump)(struct sk_buff * skb, - struct netlink_callback *cb); - int (*done)(struct netlink_callback *cb); - int family; - long args[6]; -}; - -struct netlink_notify { - struct net *net; - int pid; - int protocol; -}; - -static __inline__ struct nlmsghdr * -__nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, int type, int len, int flags) -{ - struct nlmsghdr *nlh; - int size = NLMSG_LENGTH(len); - - nlh = (struct nlmsghdr*)skb_put(skb, NLMSG_ALIGN(size)); - nlh->nlmsg_type = type; - nlh->nlmsg_len = size; - nlh->nlmsg_flags = flags; - nlh->nlmsg_pid = pid; - nlh->nlmsg_seq = seq; - if (!__builtin_constant_p(size) || NLMSG_ALIGN(size) - size != 0) - memset(NLMSG_DATA(nlh) + len, 0, NLMSG_ALIGN(size) - size); - return nlh; -} - -#define NLMSG_NEW(skb, pid, seq, type, len, flags) \ -({ if (unlikely(skb_tailroom(skb) < (int)NLMSG_SPACE(len))) \ - goto nlmsg_failure; \ - __nlmsg_put(skb, pid, seq, type, len, flags); }) - -#define NLMSG_PUT(skb, pid, seq, type, len) \ - NLMSG_NEW(skb, pid, seq, type, len, 0) - -extern int netlink_dump_start(struct sock *ssk, struct sk_buff *skb, - const struct nlmsghdr *nlh, - int (*dump)(struct sk_buff *skb, struct netlink_callback*), - int (*done)(struct netlink_callback*)); - - -#define NL_NONROOT_RECV 0x1 -#define NL_NONROOT_SEND 0x2 -extern void netlink_set_nonroot(int protocol, unsigned flag); - -#endif /* __KERNEL__ */ #endif /* __LINUX_NETLINK_H */ |