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Message-Id: <20170121000507.34381-5-cernekee@chromium.org>
Date: Fri, 20 Jan 2017 16:05:07 -0800
From: Kevin Cernekee <cernekee@...omium.org>
To: steffen.klassert@...unet.com, herbert@...dor.apana.org.au,
davem@...emloft.net, paul@...l-moore.com, sds@...ho.nsa.gov,
eparis@...isplace.org
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
selinux@...ho.nsa.gov, fw@...len.de, fan.du@...driver.com,
dianders@...omium.org, dtor@...omium.org
Subject: [PATCH 4/4] xfrm_user: Add new 32/64-agnostic netlink messages
Add several new message types to address longstanding 32-bit/64-bit
compatibility issues. Use xfrm_user_legacy to handle the existing
message types, which will retain the old IDs for compatibility with
existing binaries.
For user->kernel messages, the nlmsg_type will determine whether to use
the old format or the new format (for both requests and replies). For
kernel->user multicasts, both types will be sent.
setsockopt() will deduce the format from the length.
Signed-off-by: Kevin Cernekee <cernekee@...omium.org>
---
include/uapi/linux/xfrm.h | 152 ++++++++++++++++++++++++++++++---------
net/xfrm/xfrm_user.c | 136 ++++++++++++++++++++++++++++++++---
net/xfrm/xfrm_user.h | 75 ++++++++++++++++++++
net/xfrm/xfrm_user_legacy.c | 169 ++++++++++++++++++++++++++++----------------
security/selinux/nlmsgtab.c | 61 +++++++++-------
5 files changed, 466 insertions(+), 127 deletions(-)
diff --git a/include/uapi/linux/xfrm.h b/include/uapi/linux/xfrm.h
index 1fc62b239f1b..ae5f97681989 100644
--- a/include/uapi/linux/xfrm.h
+++ b/include/uapi/linux/xfrm.h
@@ -1,6 +1,7 @@
#ifndef _LINUX_XFRM_H
#define _LINUX_XFRM_H
+#include <linux/compiler.h>
#include <linux/in6.h>
#include <linux/types.h>
@@ -157,34 +158,34 @@ enum {
enum {
XFRM_MSG_BASE = 0x10,
- XFRM_MSG_NEWSA = 0x10,
-#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
- XFRM_MSG_DELSA,
-#define XFRM_MSG_DELSA XFRM_MSG_DELSA
- XFRM_MSG_GETSA,
-#define XFRM_MSG_GETSA XFRM_MSG_GETSA
-
- XFRM_MSG_NEWPOLICY,
-#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
- XFRM_MSG_DELPOLICY,
-#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
- XFRM_MSG_GETPOLICY,
-#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
-
- XFRM_MSG_ALLOCSPI,
-#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
- XFRM_MSG_ACQUIRE,
-#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
- XFRM_MSG_EXPIRE,
-#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
-
- XFRM_MSG_UPDPOLICY,
-#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
- XFRM_MSG_UPDSA,
-#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
-
- XFRM_MSG_POLEXPIRE,
-#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
+ XFRM_MSG_NEWSA_LEGACY = 0x10,
+#define XFRM_MSG_NEWSA_LEGACY XFRM_MSG_NEWSA_LEGACY
+ XFRM_MSG_DELSA_LEGACY,
+#define XFRM_MSG_DELSA_LEGACY XFRM_MSG_DELSA_LEGACY
+ XFRM_MSG_GETSA_LEGACY,
+#define XFRM_MSG_GETSA_LEGACY XFRM_MSG_GETSA_LEGACY
+
+ XFRM_MSG_NEWPOLICY_LEGACY,
+#define XFRM_MSG_NEWPOLICY_LEGACY XFRM_MSG_NEWPOLICY_LEGACY
+ XFRM_MSG_DELPOLICY_LEGACY,
+#define XFRM_MSG_DELPOLICY_LEGACY XFRM_MSG_DELPOLICY_LEGACY
+ XFRM_MSG_GETPOLICY_LEGACY,
+#define XFRM_MSG_GETPOLICY_LEGACY XFRM_MSG_GETPOLICY_LEGACY
+
+ XFRM_MSG_ALLOCSPI_LEGACY,
+#define XFRM_MSG_ALLOCSPI_LEGACY XFRM_MSG_ALLOCSPI_LEGACY
+ XFRM_MSG_ACQUIRE_LEGACY,
+#define XFRM_MSG_ACQUIRE_LEGACY XFRM_MSG_ACQUIRE_LEGACY
+ XFRM_MSG_EXPIRE_LEGACY,
+#define XFRM_MSG_EXPIRE_LEGACY XFRM_MSG_EXPIRE_LEGACY
+
+ XFRM_MSG_UPDPOLICY_LEGACY,
+#define XFRM_MSG_UPDPOLICY_LEGACY XFRM_MSG_UPDPOLICY_LEGACY
+ XFRM_MSG_UPDSA_LEGACY,
+#define XFRM_MSG_UPDSA_LEGACY XFRM_MSG_UPDSA_LEGACY
+
+ XFRM_MSG_POLEXPIRE_LEGACY,
+#define XFRM_MSG_POLEXPIRE_LEGACY XFRM_MSG_POLEXPIRE_LEGACY
XFRM_MSG_FLUSHSA,
#define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
@@ -214,6 +215,34 @@ enum {
XFRM_MSG_MAPPING,
#define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
+
+ XFRM_MSG_ALLOCSPI,
+#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
+ XFRM_MSG_ACQUIRE,
+#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
+ XFRM_MSG_EXPIRE,
+#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
+ XFRM_MSG_POLEXPIRE,
+#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
+
+ XFRM_MSG_NEWSA,
+#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
+ XFRM_MSG_UPDSA,
+#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
+ XFRM_MSG_DELSA,
+#define XFRM_MSG_DELSA XFRM_MSG_DELSA
+ XFRM_MSG_GETSA,
+#define XFRM_MSG_GETSA XFRM_MSG_GETSA
+
+ XFRM_MSG_NEWPOLICY,
+#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
+ XFRM_MSG_UPDPOLICY,
+#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
+ XFRM_MSG_DELPOLICY,
+#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
+ XFRM_MSG_GETPOLICY,
+#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
+
__XFRM_MSG_MAX
};
#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
@@ -221,7 +250,7 @@ enum {
#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
/*
- * Generic LSM security context for comunicating to user space
+ * Generic LSM security context for communicating to user space
* NOTE: Same format as sadb_x_sec_ctx
*/
struct xfrm_user_sec_ctx {
@@ -357,6 +386,22 @@ struct xfrmu_spdhthresh {
__u8 rbits;
};
+/* Legacy structs are incompatible between 32-bit and 64-bit. */
+struct xfrm_usersa_info_legacy {
+ struct xfrm_selector sel;
+ struct xfrm_id id;
+ xfrm_address_t saddr;
+ struct xfrm_lifetime_cfg lft;
+ struct xfrm_lifetime_cur curlft;
+ struct xfrm_stats stats;
+ __u32 seq;
+ __u32 reqid;
+ __u16 family;
+ __u8 mode; /* XFRM_MODE_xxx */
+ __u8 replay_window;
+ __u8 flags;
+};
+
struct xfrm_usersa_info {
struct xfrm_selector sel;
struct xfrm_id id;
@@ -378,7 +423,8 @@ struct xfrm_usersa_info {
#define XFRM_STATE_AF_UNSPEC 32
#define XFRM_STATE_ALIGN4 64
#define XFRM_STATE_ESN 128
-};
+ __u8 reserved[7];
+} __packed;
#define XFRM_SA_XFLAG_DONT_ENCAP_DSCP 1
@@ -396,10 +442,28 @@ struct xfrm_aevent_id {
__u32 reqid;
};
+struct xfrm_userspi_info_legacy {
+ struct xfrm_usersa_info_legacy info;
+ __u32 min;
+ __u32 max;
+};
+
struct xfrm_userspi_info {
struct xfrm_usersa_info info;
__u32 min;
__u32 max;
+} __packed;
+
+struct xfrm_userpolicy_info_legacy {
+ struct xfrm_selector sel;
+ struct xfrm_lifetime_cfg lft;
+ struct xfrm_lifetime_cur curlft;
+ __u32 priority;
+ __u32 index;
+ __u8 dir;
+ __u8 action;
+ __u8 flags;
+ __u8 share;
};
struct xfrm_userpolicy_info {
@@ -417,7 +481,8 @@ struct xfrm_userpolicy_info {
/* Automatically expand selector to include matching ICMP payloads. */
#define XFRM_POLICY_ICMP 2
__u8 share;
-};
+ __u8 reserved[4];
+} __packed;
struct xfrm_userpolicy_id {
struct xfrm_selector sel;
@@ -425,6 +490,17 @@ struct xfrm_userpolicy_id {
__u8 dir;
};
+struct xfrm_user_acquire_legacy {
+ struct xfrm_id id;
+ xfrm_address_t saddr;
+ struct xfrm_selector sel;
+ struct xfrm_userpolicy_info_legacy policy;
+ __u32 aalgos;
+ __u32 ealgos;
+ __u32 calgos;
+ __u32 seq;
+};
+
struct xfrm_user_acquire {
struct xfrm_id id;
xfrm_address_t saddr;
@@ -434,17 +510,29 @@ struct xfrm_user_acquire {
__u32 ealgos;
__u32 calgos;
__u32 seq;
+} __packed;
+
+struct xfrm_user_expire_legacy {
+ struct xfrm_usersa_info_legacy state;
+ __u8 hard;
};
struct xfrm_user_expire {
struct xfrm_usersa_info state;
__u8 hard;
+ __u8 reserved[7];
+} __packed;
+
+struct xfrm_user_polexpire_legacy {
+ struct xfrm_userpolicy_info_legacy pol;
+ __u8 hard;
};
struct xfrm_user_polexpire {
struct xfrm_userpolicy_info pol;
__u8 hard;
-};
+ __u8 reserved[7];
+} __packed;
struct xfrm_usersa_flush {
__u8 proto;
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 4d733f02c3a1..5456dde974bc 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2350,6 +2350,32 @@ static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
[XFRM_MSG_GETSADINFO - XFRM_MSG_BASE] = sizeof(u32),
[XFRM_MSG_NEWSPDINFO - XFRM_MSG_BASE] = sizeof(u32),
[XFRM_MSG_GETSPDINFO - XFRM_MSG_BASE] = sizeof(u32),
+
+ [XFRM_MSG_ALLOCSPI_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_userspi_info_legacy),
+ [XFRM_MSG_ACQUIRE_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_user_acquire_legacy),
+ [XFRM_MSG_EXPIRE_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_user_expire_legacy),
+ [XFRM_MSG_POLEXPIRE_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_user_polexpire_legacy),
+
+ [XFRM_MSG_NEWSA_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_usersa_info_legacy),
+ [XFRM_MSG_UPDSA_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_usersa_info_legacy),
+ [XFRM_MSG_DELSA_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_usersa_id),
+ [XFRM_MSG_GETSA_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_usersa_id),
+ [XFRM_MSG_NEWPOLICY_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_userpolicy_info_legacy),
+ [XFRM_MSG_UPDPOLICY_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_userpolicy_info_legacy),
+ [XFRM_MSG_DELPOLICY_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_userpolicy_id),
+ [XFRM_MSG_GETPOLICY_LEGACY - XFRM_MSG_BASE] =
+ XMSGSIZE(xfrm_userpolicy_id),
};
#undef XMSGSIZE
@@ -2396,6 +2422,7 @@ static const struct xfrm_link {
int (*done)(struct netlink_callback *);
const struct nla_policy *nla_pol;
int nla_max;
+ bool legacy;
} xfrm_dispatch[XFRM_NR_MSGTYPES] = {
[XFRM_MSG_NEWSA - XFRM_MSG_BASE] = { .doit = xfrm_add_sa },
[XFRM_MSG_DELSA - XFRM_MSG_BASE] = { .doit = xfrm_del_sa },
@@ -2423,6 +2450,62 @@ static const struct xfrm_link {
.nla_pol = xfrma_spd_policy,
.nla_max = XFRMA_SPD_MAX },
[XFRM_MSG_GETSPDINFO - XFRM_MSG_BASE] = { .doit = xfrm_get_spdinfo },
+
+#ifdef CONFIG_XFRM_USER_LEGACY
+ [XFRM_MSG_ALLOCSPI_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_alloc_userspi_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_ACQUIRE_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_add_acquire_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_EXPIRE_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_add_sa_expire_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_POLEXPIRE_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_add_pol_expire_legacy,
+ .legacy = true,
+ },
+
+ [XFRM_MSG_NEWSA_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_add_sa_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_UPDSA_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_add_sa_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_DELSA_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_del_sa_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_GETSA_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_get_sa_legacy,
+ .dump = xfrm_dump_sa_legacy,
+ .done = xfrm_dump_sa_done_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_NEWPOLICY_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_add_policy_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_UPDPOLICY_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_add_policy_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_DELPOLICY_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_get_policy_legacy,
+ .legacy = true,
+ },
+ [XFRM_MSG_GETPOLICY_LEGACY - XFRM_MSG_BASE] = {
+ .doit = xfrm_get_policy_legacy,
+ .dump = xfrm_dump_policy_legacy,
+ .done = xfrm_dump_policy_done_legacy,
+ .legacy = true,
+ },
+#endif /* CONFIG_XFRM_USER_LEGACY */
};
static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
@@ -2432,11 +2515,6 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
const struct xfrm_link *link;
int type, err;
-#ifdef CONFIG_COMPAT
- if (in_compat_syscall())
- return -EOPNOTSUPP;
-#endif
-
type = nlh->nlmsg_type;
if (type > XFRM_MSG_MAX)
return -EINVAL;
@@ -2444,12 +2522,19 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
type -= XFRM_MSG_BASE;
link = &xfrm_dispatch[type];
+#ifdef CONFIG_COMPAT
+ if (link->legacy && in_compat_syscall())
+ return -EOPNOTSUPP;
+#endif
+
/* All operations require privileges, even GET */
if (!netlink_net_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if ((type == (XFRM_MSG_GETSA - XFRM_MSG_BASE) ||
- type == (XFRM_MSG_GETPOLICY - XFRM_MSG_BASE)) &&
+ type == (XFRM_MSG_GETPOLICY - XFRM_MSG_BASE) ||
+ type == (XFRM_MSG_GETSA_LEGACY - XFRM_MSG_BASE) ||
+ type == (XFRM_MSG_GETPOLICY_LEGACY - XFRM_MSG_BASE)) &&
(nlh->nlmsg_flags & NLM_F_DUMP)) {
if (link->dump == NULL)
return -EINVAL;
@@ -2670,16 +2755,23 @@ static int xfrm_notify_sa(const struct xfrm_state *x, const struct km_event *c)
static int xfrm_send_state_notify(const struct xfrm_state *x,
const struct km_event *c)
{
+ int err;
switch (c->event) {
case XFRM_MSG_EXPIRE:
- return xfrm_exp_state_notify(x, c);
+ err = xfrm_exp_state_notify(x, c);
+ if (err)
+ return err;
+ return xfrm_exp_state_notify_legacy(x, c);
case XFRM_MSG_NEWAE:
return xfrm_aevent_state_notify(x, c);
case XFRM_MSG_DELSA:
case XFRM_MSG_UPDSA:
case XFRM_MSG_NEWSA:
- return xfrm_notify_sa(x, c);
+ err = xfrm_notify_sa(x, c);
+ if (err)
+ return err;
+ return xfrm_notify_sa_legacy(x, c);
case XFRM_MSG_FLUSHSA:
return xfrm_notify_sa_flush(c);
default:
@@ -2748,6 +2840,7 @@ static int xfrm_send_acquire(struct xfrm_state *x,
{
struct net *net = xs_net(x);
struct sk_buff *skb;
+ int err;
skb = nlmsg_new(xfrm_acquire_msgsize(x, xp), GFP_ATOMIC);
if (skb == NULL)
@@ -2756,7 +2849,11 @@ static int xfrm_send_acquire(struct xfrm_state *x,
if (build_acquire(skb, x, xt, xp) < 0)
BUG();
- return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_ACQUIRE);
+ err = xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_ACQUIRE);
+ if (err)
+ return err;
+
+ return xfrm_send_acquire_legacy(x, xt, xp);
}
/* User gives us xfrm_user_policy_info followed by an array of 0
@@ -2799,6 +2896,16 @@ static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt,
return NULL;
nr = ((len - sizeof(*p)) / sizeof(*ut));
+ if (len == (nr + 1) * sizeof(*ut) + sizeof(*p) - sizeof(u32)) {
+ /* The user passed a legacy xfrm_userpolicy_info struct whose
+ * length is padded to 32 bits instead of 64, so the above
+ * division had a remainder. Adjust the start address and
+ * count accordingly.
+ */
+ ut = (void *)data + sizeof(*p) - sizeof(u32);
+ nr++;
+ }
+
if (validate_tmpl(nr, ut, p->sel.family))
return NULL;
@@ -2979,16 +3086,23 @@ static int xfrm_send_policy_notify(const struct xfrm_policy *xp,
int dir,
const struct km_event *c)
{
+ int err;
switch (c->event) {
case XFRM_MSG_NEWPOLICY:
case XFRM_MSG_UPDPOLICY:
case XFRM_MSG_DELPOLICY:
- return xfrm_notify_policy(xp, dir, c);
+ err = xfrm_notify_policy(xp, dir, c);
+ if (err)
+ return err;
+ return xfrm_notify_policy_legacy(xp, dir, c);
case XFRM_MSG_FLUSHPOLICY:
return xfrm_notify_policy_flush(c);
case XFRM_MSG_POLEXPIRE:
- return xfrm_exp_policy_notify(xp, dir, c);
+ err = xfrm_exp_policy_notify(xp, dir, c);
+ if (err)
+ return err;
+ return xfrm_exp_policy_notify_legacy(xp, dir, c);
default:
printk(KERN_NOTICE "xfrm_user: Unknown Policy event %d\n",
c->event);
diff --git a/net/xfrm/xfrm_user.h b/net/xfrm/xfrm_user.h
index 29bab2ebee83..78627d1c1cec 100644
--- a/net/xfrm/xfrm_user.h
+++ b/net/xfrm/xfrm_user.h
@@ -1,6 +1,7 @@
#ifndef _XFRM_USER_H
#define _XFRM_USER_H
+#include <linux/errno.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/types.h>
@@ -87,4 +88,78 @@ static inline int copy_to_user_state_sec_ctx(const struct xfrm_state *x,
return 0;
}
+/* Legacy functions */
+
+#ifdef CONFIG_XFRM_USER_LEGACY
+int xfrm_alloc_userspi_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+int xfrm_add_pol_expire_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+int xfrm_add_sa_expire_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+int xfrm_add_acquire_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+
+int xfrm_add_sa_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+int xfrm_del_sa_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+int xfrm_dump_sa_done_legacy(struct netlink_callback *cb);
+int xfrm_dump_sa_legacy(struct sk_buff *skb, struct netlink_callback *cb);
+int xfrm_get_sa_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+int xfrm_add_policy_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+int xfrm_dump_policy_done_legacy(struct netlink_callback *cb);
+int xfrm_dump_policy_legacy(struct sk_buff *skb, struct netlink_callback *cb);
+int xfrm_get_policy_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+ struct nlattr **attrs);
+
+int xfrm_exp_state_notify_legacy(const struct xfrm_state *x,
+ const struct km_event *c);
+int xfrm_notify_sa_legacy(const struct xfrm_state *x, const struct km_event *c);
+int xfrm_send_acquire_legacy(struct xfrm_state *x,
+ const struct xfrm_tmpl *xt,
+ const struct xfrm_policy *xp);
+int xfrm_exp_policy_notify_legacy(const struct xfrm_policy *xp,
+ int dir,
+ const struct km_event *c);
+int xfrm_notify_policy_legacy(const struct xfrm_policy *xp,
+ int dir,
+ const struct km_event *c);
+#else /* CONFIG_XFRM_USER_LEGACY */
+static inline int xfrm_exp_state_notify_legacy(const struct xfrm_state *x,
+ const struct km_event *c)
+{
+ return 0;
+}
+
+static inline int xfrm_notify_sa_legacy(const struct xfrm_state *x,
+ const struct km_event *c)
+{
+ return 0;
+}
+
+static inline int xfrm_send_acquire_legacy(struct xfrm_state *x,
+ const struct xfrm_tmpl *xt,
+ const struct xfrm_policy *xp)
+{
+ return 0;
+}
+
+static inline int xfrm_exp_policy_notify_legacy(const struct xfrm_policy *xp,
+ int dir,
+ const struct km_event *c)
+{
+ return 0;
+}
+
+static inline int xfrm_notify_policy_legacy(const struct xfrm_policy *xp,
+ int dir,
+ const struct km_event *c)
+{
+ return 0;
+}
+#endif /* CONFIG_XFRM_USER_LEGACY */
+
#endif /* _XFRM_USER_H */
diff --git a/net/xfrm/xfrm_user_legacy.c b/net/xfrm/xfrm_user_legacy.c
index 058accfefc83..aa48845b47fa 100644
--- a/net/xfrm/xfrm_user_legacy.c
+++ b/net/xfrm/xfrm_user_legacy.c
@@ -29,28 +29,33 @@
#include <asm/unaligned.h>
#include "xfrm_user.h"
-static int xfrm_add_sa(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_add_sa_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
- const struct xfrm_usersa_info *p = nlmsg_data(nlh);
+ const struct xfrm_usersa_info_legacy *p = nlmsg_data(nlh);
struct xfrm_state *x;
int err;
struct km_event c;
- err = xfrm_verify_newsa_info(p, attrs);
+ /* This cast is safe because the only difference is end padding. */
+ err = xfrm_verify_newsa_info((const struct xfrm_usersa_info *)p, attrs);
if (err)
return err;
- x = xfrm_state_construct(net, p, attrs, &err);
+ x = xfrm_state_construct(net, (const struct xfrm_usersa_info *)p,
+ attrs, &err);
if (!x)
return err;
xfrm_state_hold(x);
- if (nlh->nlmsg_type == XFRM_MSG_NEWSA)
+ if (nlh->nlmsg_type == XFRM_MSG_NEWSA_LEGACY) {
err = xfrm_state_add(x);
- else
+ c.event = XFRM_MSG_NEWSA;
+ } else {
err = xfrm_state_update(x);
+ c.event = XFRM_MSG_UPDSA;
+ }
xfrm_audit_state_add(x, err ? 0 : 1, true);
@@ -62,7 +67,6 @@ static int xfrm_add_sa(struct sk_buff *skb, const struct nlmsghdr *nlh,
c.seq = nlh->nlmsg_seq;
c.portid = nlh->nlmsg_pid;
- c.event = nlh->nlmsg_type;
km_state_notify(x, &c);
out:
@@ -70,7 +74,7 @@ static int xfrm_add_sa(struct sk_buff *skb, const struct nlmsghdr *nlh,
return err;
}
-static int xfrm_del_sa(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_del_sa_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
@@ -98,7 +102,7 @@ static int xfrm_del_sa(struct sk_buff *skb, const struct nlmsghdr *nlh,
c.seq = nlh->nlmsg_seq;
c.portid = nlh->nlmsg_pid;
- c.event = nlh->nlmsg_type;
+ c.event = XFRM_MSG_DELSA;
km_state_notify(x, &c);
out:
@@ -108,7 +112,7 @@ static int xfrm_del_sa(struct sk_buff *skb, const struct nlmsghdr *nlh,
}
static void copy_to_user_state(const struct xfrm_state *x,
- struct xfrm_usersa_info *p)
+ struct xfrm_usersa_info_legacy *p)
{
memset(p, 0, sizeof(*p));
memcpy(&p->id, &x->id, sizeof(p->id));
@@ -128,7 +132,7 @@ static void copy_to_user_state(const struct xfrm_state *x,
}
static int copy_to_user_state_extra(const struct xfrm_state *x,
- struct xfrm_usersa_info *p,
+ struct xfrm_usersa_info_legacy *p,
struct sk_buff *skb)
{
int ret = 0;
@@ -209,12 +213,12 @@ static int dump_one_state(const 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 xfrm_usersa_info_legacy *p;
struct nlmsghdr *nlh;
int err;
nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, sp->nlmsg_seq,
- XFRM_MSG_NEWSA, sizeof(*p), sp->nlmsg_flags);
+ XFRM_MSG_NEWSA_LEGACY, sizeof(*p), sp->nlmsg_flags);
if (nlh == NULL)
return -EMSGSIZE;
@@ -229,7 +233,7 @@ static int dump_one_state(const struct xfrm_state *x, int count, void *ptr)
return 0;
}
-static int xfrm_dump_sa_done(struct netlink_callback *cb)
+int xfrm_dump_sa_done_legacy(struct netlink_callback *cb)
{
struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1];
struct sock *sk = cb->skb->sk;
@@ -241,7 +245,7 @@ static int xfrm_dump_sa_done(struct netlink_callback *cb)
}
static const struct nla_policy xfrma_policy[XFRMA_MAX+1];
-static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
+int xfrm_dump_sa_legacy(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1];
@@ -311,7 +315,7 @@ static struct sk_buff *xfrm_state_netlink(struct sk_buff *in_skb,
return skb;
}
-static int xfrm_get_sa(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_get_sa_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
@@ -335,12 +339,12 @@ static int xfrm_get_sa(struct sk_buff *skb, const struct nlmsghdr *nlh,
return err;
}
-static int xfrm_alloc_userspi(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_alloc_userspi_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
struct xfrm_state *x;
- const struct xfrm_userspi_info *p;
+ const struct xfrm_userspi_info_legacy *p;
struct sk_buff *resp_skb;
const xfrm_address_t *daddr;
int family;
@@ -395,7 +399,7 @@ static int xfrm_alloc_userspi(struct sk_buff *skb, const struct nlmsghdr *nlh,
}
static void copy_to_user_policy(const struct xfrm_policy *xp,
- struct xfrm_userpolicy_info *p,
+ struct xfrm_userpolicy_info_legacy *p,
int dir)
{
memset(p, 0, sizeof(*p));
@@ -411,24 +415,27 @@ static void copy_to_user_policy(const struct xfrm_policy *xp,
p->share = XFRM_SHARE_ANY; /* XXX xp->share */
}
-static int xfrm_add_policy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_add_policy_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
- const struct xfrm_userpolicy_info *p = nlmsg_data(nlh);
+ const struct xfrm_userpolicy_info_legacy *p = nlmsg_data(nlh);
struct xfrm_policy *xp;
struct km_event c;
int err;
int excl;
- err = xfrm_verify_newpolicy_info(p);
+ /* This cast is safe because the only difference is end padding. */
+ err = xfrm_verify_newpolicy_info(
+ (const struct xfrm_userpolicy_info *)p);
if (err)
return err;
err = xfrm_verify_sec_ctx_len(attrs);
if (err)
return err;
- xp = xfrm_policy_construct(net, p, attrs, &err);
+ xp = xfrm_policy_construct(net, (const struct xfrm_userpolicy_info *)p,
+ attrs, &err);
if (!xp)
return err;
@@ -436,7 +443,13 @@ static int xfrm_add_policy(struct sk_buff *skb, const struct nlmsghdr *nlh,
* Aha! this is anti-netlink really i.e more pfkey derived
* in netlink excl is a flag and you wouldnt need
* a type XFRM_MSG_UPDPOLICY - JHS */
- excl = nlh->nlmsg_type == XFRM_MSG_NEWPOLICY;
+ if (nlh->nlmsg_type == XFRM_MSG_NEWPOLICY_LEGACY) {
+ excl = 1;
+ c.event = XFRM_MSG_NEWPOLICY;
+ } else {
+ excl = 0;
+ c.event = XFRM_MSG_UPDPOLICY;
+ }
err = xfrm_policy_insert(p->dir, xp, excl);
xfrm_audit_policy_add(xp, err ? 0 : 1, true);
@@ -446,7 +459,6 @@ static int xfrm_add_policy(struct sk_buff *skb, const struct nlmsghdr *nlh,
return err;
}
- c.event = nlh->nlmsg_type;
c.seq = nlh->nlmsg_seq;
c.portid = nlh->nlmsg_pid;
km_policy_notify(xp, p->dir, &c);
@@ -471,14 +483,14 @@ static int dump_one_policy(const struct xfrm_policy *xp,
void *ptr)
{
struct xfrm_dump_info *sp = ptr;
- struct xfrm_userpolicy_info *p;
+ struct xfrm_userpolicy_info_legacy *p;
struct sk_buff *in_skb = sp->in_skb;
struct sk_buff *skb = sp->out_skb;
struct nlmsghdr *nlh;
int err;
nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, sp->nlmsg_seq,
- XFRM_MSG_NEWPOLICY, sizeof(*p), sp->nlmsg_flags);
+ XFRM_MSG_NEWPOLICY_LEGACY, sizeof(*p), sp->nlmsg_flags);
if (nlh == NULL)
return -EMSGSIZE;
@@ -499,7 +511,7 @@ static int dump_one_policy(const struct xfrm_policy *xp,
return 0;
}
-static int xfrm_dump_policy_done(struct netlink_callback *cb)
+int xfrm_dump_policy_done_legacy(struct netlink_callback *cb)
{
struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1];
struct net *net = sock_net(cb->skb->sk);
@@ -508,7 +520,7 @@ static int xfrm_dump_policy_done(struct netlink_callback *cb)
return 0;
}
-static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
+int xfrm_dump_policy_legacy(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1];
@@ -559,7 +571,7 @@ static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb,
return skb;
}
-static int xfrm_get_policy(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_get_policy_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
@@ -573,7 +585,13 @@ static int xfrm_get_policy(struct sk_buff *skb, const struct nlmsghdr *nlh,
u32 mark = xfrm_mark_get(attrs, &m);
p = nlmsg_data(nlh);
- delete = nlh->nlmsg_type == XFRM_MSG_DELPOLICY;
+ if (nlh->nlmsg_type == XFRM_MSG_DELPOLICY_LEGACY) {
+ delete = 1;
+ c.event = XFRM_MSG_DELPOLICY;
+ } else {
+ delete = 0;
+ c.event = XFRM_MSG_GETPOLICY;
+ }
err = xfrm_copy_from_user_policy_type(&type, attrs);
if (err)
@@ -625,7 +643,6 @@ static int xfrm_get_policy(struct sk_buff *skb, const struct nlmsghdr *nlh,
goto out;
c.data.byid = p->index;
- c.event = nlh->nlmsg_type;
c.seq = nlh->nlmsg_seq;
c.portid = nlh->nlmsg_pid;
km_policy_notify(xp, p->dir, &c);
@@ -638,13 +655,13 @@ static int xfrm_get_policy(struct sk_buff *skb, const struct nlmsghdr *nlh,
return err;
}
-static int xfrm_add_pol_expire(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_add_pol_expire_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
struct xfrm_policy *xp;
- const struct xfrm_user_polexpire *up = nlmsg_data(nlh);
- const struct xfrm_userpolicy_info *p = &up->pol;
+ const struct xfrm_user_polexpire_legacy *up = nlmsg_data(nlh);
+ const struct xfrm_userpolicy_info_legacy *p = &up->pol;
u8 type = XFRM_POLICY_TYPE_MAIN;
int err = -ENOENT;
struct xfrm_mark m;
@@ -698,14 +715,14 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, const struct nlmsghdr *nlh,
return err;
}
-static int xfrm_add_sa_expire(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_add_sa_expire_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
struct xfrm_state *x;
int err;
- const struct xfrm_user_expire *ue = nlmsg_data(nlh);
- const struct xfrm_usersa_info *p = &ue->state;
+ const struct xfrm_user_expire_legacy *ue = nlmsg_data(nlh);
+ const struct xfrm_usersa_info_legacy *p = &ue->state;
struct xfrm_mark m;
u32 mark = xfrm_mark_get(attrs, &m);
@@ -732,7 +749,7 @@ static int xfrm_add_sa_expire(struct sk_buff *skb, const struct nlmsghdr *nlh,
return err;
}
-static int xfrm_add_acquire(struct sk_buff *skb, const struct nlmsghdr *nlh,
+int xfrm_add_acquire_legacy(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr **attrs)
{
struct net *net = sock_net(skb->sk);
@@ -742,7 +759,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, const struct nlmsghdr *nlh,
struct nlattr *rt = attrs[XFRMA_TMPL];
struct xfrm_mark mark;
- const struct xfrm_user_acquire *ua = nlmsg_data(nlh);
+ const struct xfrm_user_acquire_legacy *ua = nlmsg_data(nlh);
struct xfrm_state *x = xfrm_state_alloc(net);
int err = -ENOMEM;
@@ -751,12 +768,15 @@ static int xfrm_add_acquire(struct sk_buff *skb, const struct nlmsghdr *nlh,
xfrm_mark_get(attrs, &mark);
- err = xfrm_verify_newpolicy_info(&ua->policy);
+ /* This cast is safe because the only difference is end padding. */
+ err = xfrm_verify_newpolicy_info(
+ (const struct xfrm_userpolicy_info *)&ua->policy);
if (err)
goto free_state;
/* build an XP */
- xp = xfrm_policy_construct(net, &ua->policy, attrs, &err);
+ xp = xfrm_policy_construct(net, (const struct xfrm_userpolicy_info *)
+ &ua->policy, attrs, &err);
if (!xp)
goto free_state;
@@ -793,7 +813,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, const struct nlmsghdr *nlh,
static inline size_t xfrm_expire_msgsize(void)
{
- return NLMSG_ALIGN(sizeof(struct xfrm_user_expire))
+ return NLMSG_ALIGN(sizeof(struct xfrm_user_expire_legacy))
+ nla_total_size(sizeof(struct xfrm_mark));
}
@@ -801,11 +821,12 @@ static int build_expire(struct sk_buff *skb,
const struct xfrm_state *x,
const struct km_event *c)
{
- struct xfrm_user_expire *ue;
+ struct xfrm_user_expire_legacy *ue;
struct nlmsghdr *nlh;
int err;
- nlh = nlmsg_put(skb, c->portid, 0, XFRM_MSG_EXPIRE, sizeof(*ue), 0);
+ nlh = nlmsg_put(skb, c->portid, 0, XFRM_MSG_EXPIRE_LEGACY,
+ sizeof(*ue), 0);
if (nlh == NULL)
return -EMSGSIZE;
@@ -821,7 +842,7 @@ static int build_expire(struct sk_buff *skb,
return 0;
}
-static int xfrm_exp_state_notify(const struct xfrm_state *x,
+int xfrm_exp_state_notify_legacy(const struct xfrm_state *x,
const struct km_event *c)
{
struct net *net = xs_net(x);
@@ -839,15 +860,16 @@ static int xfrm_exp_state_notify(const struct xfrm_state *x,
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_EXPIRE);
}
-static int xfrm_notify_sa(const struct xfrm_state *x, const struct km_event *c)
+int xfrm_notify_sa_legacy(const struct xfrm_state *x, const struct km_event *c)
{
struct net *net = xs_net(x);
- struct xfrm_usersa_info *p;
+ struct xfrm_usersa_info_legacy *p;
struct xfrm_usersa_id *id;
struct nlmsghdr *nlh;
struct sk_buff *skb;
int len = xfrm_sa_len(x);
int headlen, err;
+ u32 event = 0;
headlen = sizeof(*p);
if (c->event == XFRM_MSG_DELSA) {
@@ -861,7 +883,19 @@ static int xfrm_notify_sa(const struct xfrm_state *x, const struct km_event *c)
if (skb == NULL)
return -ENOMEM;
- nlh = nlmsg_put(skb, c->portid, c->seq, c->event, headlen, 0);
+ switch (c->event) {
+ case XFRM_MSG_NEWSA:
+ event = XFRM_MSG_NEWSA_LEGACY;
+ break;
+ case XFRM_MSG_UPDSA:
+ event = XFRM_MSG_UPDSA_LEGACY;
+ break;
+ case XFRM_MSG_DELSA:
+ event = XFRM_MSG_DELSA_LEGACY;
+ break;
+ }
+
+ nlh = nlmsg_put(skb, c->portid, c->seq, event, headlen, 0);
err = -EMSGSIZE;
if (nlh == NULL)
goto out_free_skb;
@@ -899,7 +933,7 @@ static int xfrm_notify_sa(const struct xfrm_state *x, const struct km_event *c)
static inline size_t xfrm_acquire_msgsize(const struct xfrm_state *x,
const struct xfrm_policy *xp)
{
- return NLMSG_ALIGN(sizeof(struct xfrm_user_acquire))
+ return NLMSG_ALIGN(sizeof(struct xfrm_user_acquire_legacy))
+ nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr)
+ nla_total_size(sizeof(struct xfrm_mark))
+ nla_total_size(xfrm_user_sec_ctx_size(x->security))
@@ -912,11 +946,11 @@ static int build_acquire(struct sk_buff *skb,
const struct xfrm_policy *xp)
{
__u32 seq = xfrm_get_acqseq();
- struct xfrm_user_acquire *ua;
+ struct xfrm_user_acquire_legacy *ua;
struct nlmsghdr *nlh;
int err;
- nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_ACQUIRE, sizeof(*ua), 0);
+ nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_ACQUIRE_LEGACY, sizeof(*ua), 0);
if (nlh == NULL)
return -EMSGSIZE;
@@ -946,7 +980,7 @@ static int build_acquire(struct sk_buff *skb,
return 0;
}
-static int xfrm_send_acquire(struct xfrm_state *x,
+int xfrm_send_acquire_legacy(struct xfrm_state *x,
const struct xfrm_tmpl *xt,
const struct xfrm_policy *xp)
{
@@ -965,7 +999,7 @@ static int xfrm_send_acquire(struct xfrm_state *x,
static inline size_t xfrm_polexpire_msgsize(const struct xfrm_policy *xp)
{
- return NLMSG_ALIGN(sizeof(struct xfrm_user_polexpire))
+ return NLMSG_ALIGN(sizeof(struct xfrm_user_polexpire_legacy))
+ nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr)
+ nla_total_size(xfrm_user_sec_ctx_size(xp->security))
+ nla_total_size(sizeof(struct xfrm_mark))
@@ -977,12 +1011,13 @@ static int build_polexpire(struct sk_buff *skb,
int dir,
const struct km_event *c)
{
- struct xfrm_user_polexpire *upe;
+ struct xfrm_user_polexpire_legacy *upe;
int hard = c->data.hard;
struct nlmsghdr *nlh;
int err;
- nlh = nlmsg_put(skb, c->portid, 0, XFRM_MSG_POLEXPIRE, sizeof(*upe), 0);
+ nlh = nlmsg_put(skb, c->portid, 0, XFRM_MSG_POLEXPIRE_LEGACY,
+ sizeof(*upe), 0);
if (nlh == NULL)
return -EMSGSIZE;
@@ -1005,7 +1040,7 @@ static int build_polexpire(struct sk_buff *skb,
return 0;
}
-static int xfrm_exp_policy_notify(const struct xfrm_policy *xp,
+int xfrm_exp_policy_notify_legacy(const struct xfrm_policy *xp,
int dir,
const struct km_event *c)
{
@@ -1022,19 +1057,21 @@ static int xfrm_exp_policy_notify(const struct xfrm_policy *xp,
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_EXPIRE);
}
-static int xfrm_notify_policy(const struct xfrm_policy *xp,
+int xfrm_notify_policy_legacy(const struct xfrm_policy *xp,
int dir,
const struct km_event *c)
{
int len = nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
struct net *net = xp_net(xp);
- struct xfrm_userpolicy_info *p;
+ struct xfrm_userpolicy_info_legacy *p;
struct xfrm_userpolicy_id *id;
struct nlmsghdr *nlh;
struct sk_buff *skb;
int headlen, err;
+ u32 event = 0;
headlen = sizeof(*p);
+
if (c->event == XFRM_MSG_DELPOLICY) {
len += nla_total_size(headlen);
headlen = sizeof(*id);
@@ -1047,7 +1084,19 @@ static int xfrm_notify_policy(const struct xfrm_policy *xp,
if (skb == NULL)
return -ENOMEM;
- nlh = nlmsg_put(skb, c->portid, c->seq, c->event, headlen, 0);
+ switch (c->event) {
+ case XFRM_MSG_NEWPOLICY:
+ event = XFRM_MSG_NEWPOLICY_LEGACY;
+ break;
+ case XFRM_MSG_UPDPOLICY:
+ event = XFRM_MSG_UPDPOLICY_LEGACY;
+ break;
+ case XFRM_MSG_DELPOLICY:
+ event = XFRM_MSG_DELPOLICY_LEGACY;
+ break;
+ }
+
+ nlh = nlmsg_put(skb, c->portid, c->seq, event, headlen, 0);
err = -EMSGSIZE;
if (nlh == NULL)
goto out_free_skb;
diff --git a/security/selinux/nlmsgtab.c b/security/selinux/nlmsgtab.c
index 2ca9cde939d4..15e8b1381c13 100644
--- a/security/selinux/nlmsgtab.c
+++ b/security/selinux/nlmsgtab.c
@@ -90,29 +90,42 @@ static struct nlmsg_perm nlmsg_tcpdiag_perms[] =
static struct nlmsg_perm nlmsg_xfrm_perms[] =
{
- { XFRM_MSG_NEWSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_DELSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_GETSA, NETLINK_XFRM_SOCKET__NLMSG_READ },
- { XFRM_MSG_NEWPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_DELPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_GETPOLICY, NETLINK_XFRM_SOCKET__NLMSG_READ },
- { XFRM_MSG_ALLOCSPI, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_ACQUIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_EXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_UPDPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_UPDSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_POLEXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_FLUSHSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_FLUSHPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_NEWAE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_GETAE, NETLINK_XFRM_SOCKET__NLMSG_READ },
- { XFRM_MSG_REPORT, NETLINK_XFRM_SOCKET__NLMSG_READ },
- { XFRM_MSG_MIGRATE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_NEWSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
- { XFRM_MSG_GETSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
- { XFRM_MSG_NEWSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
- { XFRM_MSG_GETSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
- { XFRM_MSG_MAPPING, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_NEWSA_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_DELSA_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_GETSA_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_NEWPOLICY_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_DELPOLICY_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_GETPOLICY_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_ALLOCSPI_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_ACQUIRE_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_EXPIRE_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_UPDPOLICY_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_UPDSA_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_POLEXPIRE_LEGACY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_FLUSHSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_FLUSHPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_NEWAE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_GETAE, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_REPORT, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_MIGRATE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_NEWSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_GETSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_NEWSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_GETSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_MAPPING, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_ALLOCSPI, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_ACQUIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_EXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_POLEXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_NEWSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_NEWSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_UPDSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_DELSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_GETSA, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_NEWPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_UPDPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_DELPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_GETPOLICY, NETLINK_XFRM_SOCKET__NLMSG_READ },
};
static struct nlmsg_perm nlmsg_audit_perms[] =
@@ -168,7 +181,7 @@ int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
break;
case SECCLASS_NETLINK_XFRM_SOCKET:
- BUILD_BUG_ON(XFRM_MSG_MAX != XFRM_MSG_MAPPING);
+ BUILD_BUG_ON(XFRM_MSG_MAX != XFRM_MSG_GETPOLICY);
err = nlmsg_perm(nlmsg_type, perm, nlmsg_xfrm_perms,
sizeof(nlmsg_xfrm_perms));
break;
--
2.11.0.483.g087da7b7c-goog
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