From 79b8b7f4ab686e0f14ceb9a6fa4437eb1e73a0e5 Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Wed, 22 Aug 2007 12:46:53 -0700 Subject: [PATCH] [XFRM] netlink: Use nlmsg_put() instead of NLMSG_PUT() Signed-off-by: Thomas Graf Signed-off-by: David S. Miller --- net/xfrm/xfrm_user.c | 83 +++++++++++++++++++++----------------------- 1 file changed, 40 insertions(+), 43 deletions(-) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 61339e17a0f5..ec480b69510b 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -588,10 +588,10 @@ static int dump_one_state(struct xfrm_state *x, int count, void *ptr) if (sp->this_idx < sp->start_idx) goto out; - nlh = NLMSG_PUT(skb, NETLINK_CB(in_skb).pid, - sp->nlmsg_seq, - XFRM_MSG_NEWSA, sizeof(*p)); - nlh->nlmsg_flags = sp->nlmsg_flags; + nlh = nlmsg_put(skb, NETLINK_CB(in_skb).pid, sp->nlmsg_seq, + XFRM_MSG_NEWSA, sizeof(*p), sp->nlmsg_flags); + if (nlh == NULL) + return -EMSGSIZE; p = NLMSG_DATA(nlh); copy_to_user_state(x, p); @@ -633,7 +633,6 @@ out: sp->this_idx++; return 0; -nlmsg_failure: rtattr_failure: nlmsg_trim(skb, b); return -1; @@ -1276,11 +1275,11 @@ static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr if (sp->this_idx < sp->start_idx) goto out; - nlh = NLMSG_PUT(skb, NETLINK_CB(in_skb).pid, - sp->nlmsg_seq, - XFRM_MSG_NEWPOLICY, sizeof(*p)); + nlh = nlmsg_put(skb, NETLINK_CB(in_skb).pid, sp->nlmsg_seq, + XFRM_MSG_NEWPOLICY, sizeof(*p), sp->nlmsg_flags); + if (nlh == NULL) + return -EMSGSIZE; p = NLMSG_DATA(nlh); - nlh->nlmsg_flags = sp->nlmsg_flags; copy_to_user_policy(xp, p, dir); if (copy_to_user_tmpl(xp, skb) < 0) @@ -1449,9 +1448,10 @@ static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, struct km_eve struct xfrm_lifetime_cur ltime; unsigned char *b = skb_tail_pointer(skb); - nlh = NLMSG_PUT(skb, c->pid, c->seq, XFRM_MSG_NEWAE, sizeof(*id)); + nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_NEWAE, sizeof(*id), 0); + if (nlh == NULL) + return -EMSGSIZE; id = NLMSG_DATA(nlh); - nlh->nlmsg_flags = 0; memcpy(&id->sa_id.daddr, &x->id.daddr,sizeof(x->id.daddr)); id->sa_id.spi = x->id.spi; @@ -1483,7 +1483,6 @@ static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, struct km_eve return skb->len; rtattr_failure: -nlmsg_failure: nlmsg_trim(skb, b); return -1; } @@ -1866,9 +1865,10 @@ static int build_migrate(struct sk_buff *skb, struct xfrm_migrate *m, unsigned char *b = skb_tail_pointer(skb); int i; - nlh = NLMSG_PUT(skb, 0, 0, XFRM_MSG_MIGRATE, sizeof(*pol_id)); + nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_MIGRATE, sizeof(*pol_id), 0); + if (nlh == NULL) + return -EMSGSIZE; pol_id = NLMSG_DATA(nlh); - nlh->nlmsg_flags = 0; /* copy data from selector, dir, and type to the pol_id */ memset(pol_id, 0, sizeof(*pol_id)); @@ -2045,20 +2045,16 @@ static int build_expire(struct sk_buff *skb, struct xfrm_state *x, struct km_eve struct nlmsghdr *nlh; unsigned char *b = skb_tail_pointer(skb); - nlh = NLMSG_PUT(skb, c->pid, 0, XFRM_MSG_EXPIRE, - sizeof(*ue)); + nlh = nlmsg_put(skb, c->pid, 0, XFRM_MSG_EXPIRE, sizeof(*ue), 0); + if (nlh == NULL) + return -EMSGSIZE; ue = NLMSG_DATA(nlh); - nlh->nlmsg_flags = 0; copy_to_user_state(x, &ue->state); ue->hard = (c->data.hard != 0) ? 1 : 0; nlh->nlmsg_len = skb_tail_pointer(skb) - b; return skb->len; - -nlmsg_failure: - nlmsg_trim(skb, b); - return -1; } static int xfrm_exp_state_notify(struct xfrm_state *x, struct km_event *c) @@ -2108,9 +2104,11 @@ static int xfrm_notify_sa_flush(struct km_event *c) return -ENOMEM; b = skb->tail; - nlh = NLMSG_PUT(skb, c->pid, c->seq, - XFRM_MSG_FLUSHSA, sizeof(*p)); - nlh->nlmsg_flags = 0; + nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_FLUSHSA, sizeof(*p), 0); + if (nlh == NULL) { + kfree_skb(skb); + return -EMSGSIZE; + } p = NLMSG_DATA(nlh); p->proto = c->data.proto; @@ -2119,10 +2117,6 @@ static int xfrm_notify_sa_flush(struct km_event *c) NETLINK_CB(skb).dst_group = XFRMNLGRP_SA; return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC); - -nlmsg_failure: - kfree_skb(skb); - return -1; } static inline int xfrm_sa_len(struct xfrm_state *x) @@ -2162,8 +2156,9 @@ static int xfrm_notify_sa(struct xfrm_state *x, struct km_event *c) return -ENOMEM; b = skb->tail; - nlh = NLMSG_PUT(skb, c->pid, c->seq, c->event, headlen); - nlh->nlmsg_flags = 0; + nlh = nlmsg_put(skb, c->pid, c->seq, c->event, headlen, 0); + if (nlh == NULL) + goto nlmsg_failure; p = NLMSG_DATA(nlh); if (c->event == XFRM_MSG_DELSA) { @@ -2233,10 +2228,10 @@ static int build_acquire(struct sk_buff *skb, struct xfrm_state *x, unsigned char *b = skb_tail_pointer(skb); __u32 seq = xfrm_get_acqseq(); - nlh = NLMSG_PUT(skb, 0, 0, XFRM_MSG_ACQUIRE, - sizeof(*ua)); + nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_ACQUIRE, sizeof(*ua), 0); + if (nlh == NULL) + return -EMSGSIZE; ua = NLMSG_DATA(nlh); - nlh->nlmsg_flags = 0; memcpy(&ua->id, &x->id, sizeof(ua->id)); memcpy(&ua->saddr, &x->props.saddr, sizeof(ua->saddr)); @@ -2352,9 +2347,10 @@ static int build_polexpire(struct sk_buff *skb, struct xfrm_policy *xp, int hard = c->data.hard; unsigned char *b = skb_tail_pointer(skb); - nlh = NLMSG_PUT(skb, c->pid, 0, XFRM_MSG_POLEXPIRE, sizeof(*upe)); + nlh = nlmsg_put(skb, c->pid, 0, XFRM_MSG_POLEXPIRE, sizeof(*upe), 0); + if (nlh == NULL) + return -EMSGSIZE; upe = NLMSG_DATA(nlh); - nlh->nlmsg_flags = 0; copy_to_user_policy(xp, &upe->pol, dir); if (copy_to_user_tmpl(xp, skb) < 0) @@ -2420,7 +2416,9 @@ static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event * return -ENOMEM; b = skb->tail; - nlh = NLMSG_PUT(skb, c->pid, c->seq, c->event, headlen); + nlh = nlmsg_put(skb, c->pid, c->seq, c->event, headlen, 0); + if (nlh == NULL) + goto nlmsg_failure; p = NLMSG_DATA(nlh); if (c->event == XFRM_MSG_DELPOLICY) { @@ -2435,8 +2433,6 @@ static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event * p = RTA_DATA(__RTA_PUT(skb, XFRMA_POLICY, sizeof(*p))); } - nlh->nlmsg_flags = 0; - copy_to_user_policy(xp, p, dir); if (copy_to_user_tmpl(xp, skb) < 0) goto nlmsg_failure; @@ -2471,8 +2467,9 @@ static int xfrm_notify_policy_flush(struct km_event *c) b = skb->tail; - nlh = NLMSG_PUT(skb, c->pid, c->seq, XFRM_MSG_FLUSHPOLICY, 0); - nlh->nlmsg_flags = 0; + nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_FLUSHPOLICY, 0, 0); + if (nlh == NULL) + goto nlmsg_failure; if (copy_to_user_policy_type(c->data.type, skb) < 0) goto nlmsg_failure; @@ -2513,9 +2510,10 @@ static int build_report(struct sk_buff *skb, u8 proto, struct nlmsghdr *nlh; unsigned char *b = skb_tail_pointer(skb); - nlh = NLMSG_PUT(skb, 0, 0, XFRM_MSG_REPORT, sizeof(*ur)); + nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_REPORT, sizeof(*ur), 0); + if (nlh == NULL) + return -EMSGSIZE; ur = NLMSG_DATA(nlh); - nlh->nlmsg_flags = 0; ur->proto = proto; memcpy(&ur->sel, sel, sizeof(ur->sel)); @@ -2526,7 +2524,6 @@ static int build_report(struct sk_buff *skb, u8 proto, nlh->nlmsg_len = skb_tail_pointer(skb) - b; return skb->len; -nlmsg_failure: rtattr_failure: nlmsg_trim(skb, b); return -1; -- 2.20.1