#include <linux/string.h>
#include <linux/net.h>
#include <linux/skbuff.h>
-#include <linux/rtnetlink.h>
#include <linux/pfkeyv2.h>
#include <linux/ipsec.h>
#include <linux/init.h>
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#include <linux/in6.h>
#endif
-#include <linux/audit.h>
static inline int alg_len(struct xfrm_algo *alg)
{
return 0;
}
-static int attach_encap_tmpl(struct xfrm_encap_tmpl **encapp, struct nlattr *rta)
-{
- struct xfrm_encap_tmpl *p, *uencap;
-
- if (!rta)
- return 0;
-
- uencap = nla_data(rta);
- p = kmemdup(uencap, sizeof(*p), GFP_KERNEL);
- if (!p)
- return -ENOMEM;
-
- *encapp = p;
- return 0;
-}
-
-
static inline int xfrm_user_sec_ctx_size(struct xfrm_sec_ctx *xfrm_ctx)
{
int len = 0;
return len;
}
-static int attach_sec_ctx(struct xfrm_state *x, struct nlattr *u_arg)
-{
- struct xfrm_user_sec_ctx *uctx;
-
- if (!u_arg)
- return 0;
-
- uctx = nla_data(u_arg);
- return security_xfrm_state_alloc(x, uctx);
-}
-
-static int attach_one_addr(xfrm_address_t **addrpp, struct nlattr *rta)
-{
- xfrm_address_t *p, *uaddrp;
-
- if (!rta)
- return 0;
-
- uaddrp = nla_data(rta);
- p = kmemdup(uaddrp, sizeof(*p), GFP_KERNEL);
- if (!p)
- return -ENOMEM;
-
- *addrpp = p;
- return 0;
-}
-
static void copy_from_user_state(struct xfrm_state *x, struct xfrm_usersa_info *p)
{
memcpy(&x->id, &p->id, sizeof(x->id));
xfrm_calg_get_byname,
attrs[XFRMA_ALG_COMP])))
goto error;
- if ((err = attach_encap_tmpl(&x->encap, attrs[XFRMA_ENCAP])))
- goto error;
- if ((err = attach_one_addr(&x->coaddr, attrs[XFRMA_COADDR])))
- goto error;
+
+ if (attrs[XFRMA_ENCAP]) {
+ x->encap = kmemdup(nla_data(attrs[XFRMA_ENCAP]),
+ sizeof(*x->encap), GFP_KERNEL);
+ if (x->encap == NULL)
+ goto error;
+ }
+
+ if (attrs[XFRMA_COADDR]) {
+ x->coaddr = kmemdup(nla_data(attrs[XFRMA_COADDR]),
+ sizeof(*x->coaddr), GFP_KERNEL);
+ if (x->coaddr == NULL)
+ goto error;
+ }
+
err = xfrm_init_state(x);
if (err)
goto error;
- if ((err = attach_sec_ctx(x, attrs[XFRMA_SEC_CTX])))
+ if (attrs[XFRMA_SEC_CTX] &&
+ security_xfrm_state_alloc(x, nla_data(attrs[XFRMA_SEC_CTX])))
goto error;
x->km.seq = p->seq;
else
err = xfrm_state_update(x);
- xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
- AUDIT_MAC_IPSEC_ADDSA, err ? 0 : 1, NULL, x);
+ xfrm_audit_state_add(x, err ? 0 : 1, NETLINK_CB(skb).loginuid,
+ NETLINK_CB(skb).sid);
if (err < 0) {
x->km.state = XFRM_STATE_DEAD;
km_state_notify(x, &c);
out:
- xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
- AUDIT_MAC_IPSEC_DELSA, err ? 0 : 1, NULL, x);
+ xfrm_audit_state_delete(x, err ? 0 : 1, NETLINK_CB(skb).loginuid,
+ NETLINK_CB(skb).sid);
xfrm_state_put(x);
return err;
}
static int copy_sec_ctx(struct xfrm_sec_ctx *s, struct sk_buff *skb)
{
- int ctx_size = sizeof(struct xfrm_sec_ctx) + s->ctx_len;
struct xfrm_user_sec_ctx *uctx;
struct nlattr *attr;
+ int ctx_size = sizeof(*uctx) + s->ctx_len;
attr = nla_reserve(skb, XFRMA_SEC_CTX, ctx_size);
if (attr == NULL)
return 0;
}
-static int dump_one_state(struct xfrm_state *x, int count, void *ptr)
+/* Don't change this without updating xfrm_sa_len! */
+static int copy_to_user_state_extra(struct xfrm_state *x,
+ struct xfrm_usersa_info *p,
+ struct sk_buff *skb)
{
- struct xfrm_dump_info *sp = ptr;
- struct sk_buff *in_skb = sp->in_skb;
- struct sk_buff *skb = sp->out_skb;
- struct xfrm_usersa_info *p;
- struct nlmsghdr *nlh;
-
- 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), sp->nlmsg_flags);
- if (nlh == NULL)
- return -EMSGSIZE;
-
- p = nlmsg_data(nlh);
copy_to_user_state(x, p);
if (x->aalg)
if (x->lastused)
NLA_PUT_U64(skb, XFRMA_LASTUSED, x->lastused);
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+
+static int dump_one_state(struct xfrm_state *x, int count, void *ptr)
+{
+ struct xfrm_dump_info *sp = ptr;
+ struct sk_buff *in_skb = sp->in_skb;
+ struct sk_buff *skb = sp->out_skb;
+ struct xfrm_usersa_info *p;
+ struct nlmsghdr *nlh;
+ int err;
+
+ 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), sp->nlmsg_flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+
+ p = nlmsg_data(nlh);
+
+ err = copy_to_user_state_extra(x, p, skb);
+ if (err)
+ goto nla_put_failure;
+
nlmsg_end(skb, nlh);
out:
sp->this_idx++;
nla_put_failure:
nlmsg_cancel(skb, nlh);
- return -EMSGSIZE;
+ return err;
}
static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
if (x == NULL)
goto out_noput;
- resp_skb = ERR_PTR(-ENOENT);
-
- spin_lock_bh(&x->lock);
- if (x->km.state != XFRM_STATE_DEAD) {
- xfrm_alloc_spi(x, htonl(p->min), htonl(p->max));
- if (x->id.spi)
- resp_skb = xfrm_state_netlink(skb, x, nlh->nlmsg_seq);
- }
- spin_unlock_bh(&x->lock);
+ err = xfrm_alloc_spi(x, p->min, p->max);
+ if (err)
+ goto out;
+ resp_skb = xfrm_state_netlink(skb, x, nlh->nlmsg_seq);
if (IS_ERR(resp_skb)) {
err = PTR_ERR(resp_skb);
goto out;
* a type XFRM_MSG_UPDPOLICY - JHS */
excl = nlh->nlmsg_type == XFRM_MSG_NEWPOLICY;
err = xfrm_policy_insert(p->dir, xp, excl);
- xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
- AUDIT_MAC_IPSEC_DELSPD, err ? 0 : 1, xp, NULL);
+ xfrm_audit_policy_add(xp, err ? 0 : 1, NETLINK_CB(skb).loginuid,
+ NETLINK_CB(skb).sid);
if (err) {
security_xfrm_policy_free(xp);
NETLINK_CB(skb).pid);
}
} else {
- xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
- AUDIT_MAC_IPSEC_DELSPD, err ? 0 : 1, xp, NULL);
+ xfrm_audit_policy_delete(xp, err ? 0 : 1,
+ NETLINK_CB(skb).loginuid,
+ NETLINK_CB(skb).sid);
if (err != 0)
goto out;
err = 0;
if (up->hard) {
xfrm_policy_delete(xp, p->dir);
- xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
- AUDIT_MAC_IPSEC_DELSPD, 1, xp, NULL);
+ xfrm_audit_policy_delete(xp, 1, NETLINK_CB(skb).loginuid,
+ NETLINK_CB(skb).sid);
} else {
// reset the timers here?
if (ue->hard) {
__xfrm_state_delete(x);
- xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
- AUDIT_MAC_IPSEC_DELSA, 1, NULL, x);
+ xfrm_audit_state_delete(x, 1, NETLINK_CB(skb).loginuid,
+ NETLINK_CB(skb).sid);
}
err = 0;
out:
do {
mutex_lock(&xfrm_cfg_mutex);
- netlink_run_queue(sk, &qlen, &xfrm_user_rcv_msg);
+ qlen = netlink_run_queue(sk, qlen, &xfrm_user_rcv_msg);
mutex_unlock(&xfrm_cfg_mutex);
} while (qlen);
l += nla_total_size(sizeof(*x->calg));
if (x->encap)
l += nla_total_size(sizeof(*x->encap));
+ if (x->security)
+ l += nla_total_size(sizeof(struct xfrm_user_sec_ctx) +
+ x->security->ctx_len);
+ if (x->coaddr)
+ l += nla_total_size(sizeof(*x->coaddr));
+
+ /* Must count this as this may become non-zero behind our back. */
+ l += nla_total_size(sizeof(x->lastused));
return l;
}
p = nla_data(attr);
}
- copy_to_user_state(x, p);
-
- if (x->aalg)
- NLA_PUT(skb, XFRMA_ALG_AUTH, alg_len(x->aalg), x->aalg);
- if (x->ealg)
- NLA_PUT(skb, XFRMA_ALG_CRYPT, alg_len(x->ealg), x->ealg);
- if (x->calg)
- NLA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg);
-
- if (x->encap)
- NLA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
+ if (copy_to_user_state_extra(x, p, skb))
+ goto nla_put_failure;
nlmsg_end(skb, nlh);
return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
nla_put_failure:
+ /* Somebody screwed up with xfrm_sa_len! */
+ WARN_ON(1);
kfree_skb(skb);
return -1;
}
printk(KERN_INFO "Initializing XFRM netlink socket\n");
- nlsk = netlink_kernel_create(NETLINK_XFRM, XFRMNLGRP_MAX,
+ nlsk = netlink_kernel_create(&init_net, NETLINK_XFRM, XFRMNLGRP_MAX,
xfrm_netlink_rcv, NULL, THIS_MODULE);
if (nlsk == NULL)
return -ENOMEM;
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