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| author | Serge Hallyn <serue@us.ibm.com> | 2006-07-24 23:30:44 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-22 14:53:25 -0700 |
| commit | 0d681623d30c6565e8b62889f3aa3f4d4662c3e8 (patch) | |
| tree | ecda711a40bcee7472e2e25e68cc712854245fad /net/xfrm | |
| parent | e0d1caa7b0d5f02e4f34aa09c695d04251310c6c (diff) | |
| download | linux-0d681623d30c6565e8b62889f3aa3f4d4662c3e8.tar.gz linux-0d681623d30c6565e8b62889f3aa3f4d4662c3e8.tar.bz2 linux-0d681623d30c6565e8b62889f3aa3f4d4662c3e8.zip | |
[MLSXFRM]: Add security context to acquire messages using netlink
This includes the security context of a security association created
for use by IKE in the acquire messages sent to IKE daemons using
netlink/xfrm_user. This would allow the daemons to include the
security context in the negotiation, so that the resultant association
is unique to that security context.
Signed-off-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_user.c | 43 |
1 files changed, 28 insertions, 15 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index fa79ddc4239e..dac8db1088bc 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -911,25 +911,38 @@ rtattr_failure: return -1; } -static int copy_to_user_sec_ctx(struct xfrm_policy *xp, struct sk_buff *skb) +static int copy_sec_ctx(struct xfrm_sec_ctx *s, struct sk_buff *skb) { - if (xp->security) { - int ctx_size = sizeof(struct xfrm_sec_ctx) + - xp->security->ctx_len; - struct rtattr *rt = __RTA_PUT(skb, XFRMA_SEC_CTX, ctx_size); - struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt); + int ctx_size = sizeof(struct xfrm_sec_ctx) + s->ctx_len; + struct rtattr *rt = __RTA_PUT(skb, XFRMA_SEC_CTX, ctx_size); + struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt); + + uctx->exttype = XFRMA_SEC_CTX; + uctx->len = ctx_size; + uctx->ctx_doi = s->ctx_doi; + uctx->ctx_alg = s->ctx_alg; + uctx->ctx_len = s->ctx_len; + memcpy(uctx + 1, s->ctx_str, s->ctx_len); + return 0; - uctx->exttype = XFRMA_SEC_CTX; - uctx->len = ctx_size; - uctx->ctx_doi = xp->security->ctx_doi; - uctx->ctx_alg = xp->security->ctx_alg; - uctx->ctx_len = xp->security->ctx_len; - memcpy(uctx + 1, xp->security->ctx_str, xp->security->ctx_len); + rtattr_failure: + return -1; +} + +static inline int copy_to_user_state_sec_ctx(struct xfrm_state *x, struct sk_buff *skb) +{ + if (x->security) { + return copy_sec_ctx(x->security, skb); } return 0; +} - rtattr_failure: - return -1; +static inline int copy_to_user_sec_ctx(struct xfrm_policy *xp, struct sk_buff *skb) +{ + if (xp->security) { + return copy_sec_ctx(xp->security, skb); + } + return 0; } static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr) @@ -1710,7 +1723,7 @@ static int build_acquire(struct sk_buff *skb, struct xfrm_state *x, if (copy_to_user_tmpl(xp, skb) < 0) goto nlmsg_failure; - if (copy_to_user_sec_ctx(xp, skb)) + if (copy_to_user_state_sec_ctx(x, skb)) goto nlmsg_failure; nlh->nlmsg_len = skb->tail - b; |