diff options
| -rw-r--r-- | include/linux/inet_diag.h | 1 | ||||
| -rw-r--r-- | include/linux/sock_diag.h | 3 | ||||
| -rw-r--r-- | net/core/sock_diag.c | 19 | ||||
| -rw-r--r-- | net/ipv4/inet_diag.c | 23 | ||||
| -rw-r--r-- | net/ipv4/udp_diag.c | 2 |
5 files changed, 27 insertions, 21 deletions
diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h index a27e621..afa5d5c 100644 --- a/include/linux/inet_diag.h +++ b/include/linux/inet_diag.h @@ -168,7 +168,6 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct inet_diag_req *req); int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk); -int inet_diag_check_cookie(struct sock *sk, struct inet_diag_req *req); extern int inet_diag_register(const struct inet_diag_handler *handler); extern void inet_diag_unregister(const struct inet_diag_handler *handler); diff --git a/include/linux/sock_diag.h b/include/linux/sock_diag.h index 7999778..379d5dc 100644 --- a/include/linux/sock_diag.h +++ b/include/linux/sock_diag.h @@ -22,5 +22,8 @@ void sock_diag_unregister(struct sock_diag_handler *h); void sock_diag_register_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh)); void sock_diag_unregister_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh)); +int sock_diag_check_cookie(void *sk, __u32 *cookie); +void sock_diag_save_cookie(void *sk, __u32 *cookie); + extern struct sock *sock_diag_nlsk; #endif diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c index cee96f3..711bdef 100644 --- a/net/core/sock_diag.c +++ b/net/core/sock_diag.c @@ -12,6 +12,25 @@ static struct sock_diag_handler *sock_diag_handlers[AF_MAX]; static int (*inet_rcv_compat)(struct sk_buff *skb, struct nlmsghdr *nlh); static DEFINE_MUTEX(sock_diag_table_mutex); +int sock_diag_check_cookie(void *sk, __u32 *cookie) +{ + if ((cookie[0] != INET_DIAG_NOCOOKIE || + cookie[1] != INET_DIAG_NOCOOKIE) && + ((u32)(unsigned long)sk != cookie[0] || + (u32)((((unsigned long)sk) >> 31) >> 1) != cookie[1])) + return -ESTALE; + else + return 0; +} +EXPORT_SYMBOL_GPL(sock_diag_check_cookie); + +void sock_diag_save_cookie(void *sk, __u32 *cookie) +{ + cookie[0] = (u32)(unsigned long)sk; + cookie[1] = (u32)(((unsigned long)sk >> 31) >> 1); +} +EXPORT_SYMBOL_GPL(sock_diag_save_cookie); + void sock_diag_register_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh)) { mutex_lock(&sock_diag_table_mutex); diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index fa27313..fb2e47f 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -102,8 +102,7 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, r->idiag_retrans = 0; r->id.idiag_if = sk->sk_bound_dev_if; - r->id.idiag_cookie[0] = (u32)(unsigned long)sk; - r->id.idiag_cookie[1] = (u32)(((unsigned long)sk >> 31) >> 1); + sock_diag_save_cookie(sk, r->id.idiag_cookie); r->id.idiag_sport = inet->inet_sport; r->id.idiag_dport = inet->inet_dport; @@ -221,8 +220,7 @@ static int inet_twsk_diag_fill(struct inet_timewait_sock *tw, r->idiag_family = tw->tw_family; r->idiag_retrans = 0; r->id.idiag_if = tw->tw_bound_dev_if; - r->id.idiag_cookie[0] = (u32)(unsigned long)tw; - r->id.idiag_cookie[1] = (u32)(((unsigned long)tw >> 31) >> 1); + sock_diag_save_cookie(tw, r->id.idiag_cookie); r->id.idiag_sport = tw->tw_sport; r->id.idiag_dport = tw->tw_dport; r->id.idiag_src[0] = tw->tw_rcv_saddr; @@ -261,18 +259,6 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, return inet_csk_diag_fill(sk, skb, r, pid, seq, nlmsg_flags, unlh); } -int inet_diag_check_cookie(struct sock *sk, struct inet_diag_req *req) -{ - if ((req->id.idiag_cookie[0] != INET_DIAG_NOCOOKIE || - req->id.idiag_cookie[1] != INET_DIAG_NOCOOKIE) && - ((u32)(unsigned long)sk != req->id.idiag_cookie[0] || - (u32)((((unsigned long)sk) >> 31) >> 1) != req->id.idiag_cookie[1])) - return -ESTALE; - else - return 0; -} -EXPORT_SYMBOL_GPL(inet_diag_check_cookie); - int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb, const struct nlmsghdr *nlh, struct inet_diag_req *req) { @@ -304,7 +290,7 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_s if (sk == NULL) goto out_nosk; - err = inet_diag_check_cookie(sk, req); + err = sock_diag_check_cookie(sk, req->id.idiag_cookie); if (err) goto out; @@ -617,8 +603,7 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk, r->idiag_retrans = req->retrans; r->id.idiag_if = sk->sk_bound_dev_if; - r->id.idiag_cookie[0] = (u32)(unsigned long)req; - r->id.idiag_cookie[1] = (u32)(((unsigned long)req >> 31) >> 1); + sock_diag_save_cookie(req, r->id.idiag_cookie); tmo = req->expires - jiffies; if (tmo < 0) diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c index fe9db86..69f8a7c 100644 --- a/net/ipv4/udp_diag.c +++ b/net/ipv4/udp_diag.c @@ -57,7 +57,7 @@ static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb, if (sk == NULL) goto out_nosk; - err = inet_diag_check_cookie(sk, req); + err = sock_diag_check_cookie(sk, req->id.idiag_cookie); if (err) goto out; |