From: Casey Schaufler <casey@schaufler-ca.com>
To: casey.schaufler@intel.com, jmorris@namei.org,
linux-security-module@vger.kernel.org, selinux@vger.kernel.org
Cc: casey@schaufler-ca.com, keescook@chromium.org,
john.johansen@canonical.com, penguin-kernel@i-love.sakura.ne.jp,
paul@paul-moore.com, sds@tycho.nsa.gov
Subject: [PATCH 09/58] LSM: Use lsm_export in the getpeersec_dgram hooks
Date: Fri, 31 May 2019 16:31:00 -0700 [thread overview]
Message-ID: <20190531233149.715-10-casey@schaufler-ca.com> (raw)
In-Reply-To: <20190531233149.715-1-casey@schaufler-ca.com>
Convert the getpeersec_dgram hooks to use the lsm_export
structure instead of a u32 secid. There is some scaffolding
involved that will be removed when security_getpeersec_dgram()
is updated.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
---
include/linux/lsm_hooks.h | 5 +++--
security/apparmor/lsm.c | 3 ++-
security/security.c | 13 ++++++++++---
security/selinux/hooks.c | 6 ++++--
security/smack/smack_lsm.c | 5 +++--
5 files changed, 22 insertions(+), 10 deletions(-)
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 800040050032..bcc628cffe6a 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -881,7 +881,7 @@
* ancillary message type.
* @sock contains the peer socket. May be NULL.
* @skb is the sk_buff for the packet being queried. May be NULL.
- * @secid pointer to store the secid of the packet.
+ * @l is a pointer to a buffer in which to copy the security data
* Return 0 on success, error on failure.
* @sk_alloc_security:
* Allocate and attach a security structure to the sk->sk_security field,
@@ -1702,7 +1702,8 @@ union security_list_options {
char __user *optval,
int __user *optlen, unsigned len);
int (*socket_getpeersec_dgram)(struct socket *sock,
- struct sk_buff *skb, u32 *secid);
+ struct sk_buff *skb,
+ struct lsm_export *l);
int (*sk_alloc_security)(struct sock *sk, int family, gfp_t priority);
void (*sk_free_security)(struct sock *sk);
void (*sk_clone_security)(const struct sock *sk, struct sock *newsk);
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index 706e5ae09170..24b638bd4305 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -1096,7 +1096,8 @@ static int apparmor_socket_getpeersec_stream(struct socket *sock,
* Sets the netlabel socket state on sk from parent
*/
static int apparmor_socket_getpeersec_dgram(struct socket *sock,
- struct sk_buff *skb, u32 *secid)
+ struct sk_buff *skb,
+ struct lsm_export *l)
{
/* TODO: requires secid support */
diff --git a/security/security.c b/security/security.c
index 3a766755b722..2f1355d10e0d 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2145,10 +2145,17 @@ int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
optval, optlen, len);
}
-int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
+int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb,
+ u32 *secid)
{
- return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
- skb, secid);
+ int rc;
+ struct lsm_export data = { .flags = LSM_EXPORT_NONE };
+
+ rc = call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, skb,
+ &data);
+
+ lsm_export_secid(&data, secid);
+ return rc;
}
EXPORT_SYMBOL(security_socket_getpeersec_dgram);
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index b88a51b6ca41..9db12f6b1221 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4949,7 +4949,9 @@ static int selinux_socket_getpeersec_stream(struct socket *sock,
return err;
}
-static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
+static int selinux_socket_getpeersec_dgram(struct socket *sock,
+ struct sk_buff *skb,
+ struct lsm_export *l)
{
u32 peer_secid = SECSID_NULL;
u16 family;
@@ -4971,7 +4973,7 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *
selinux_skb_peerlbl_sid(skb, family, &peer_secid);
out:
- *secid = peer_secid;
+ selinux_export_secid(l, peer_secid);
if (peer_secid == SECSID_NULL)
return -EINVAL;
return 0;
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 3b77a0324c3d..3e3724bbd6ea 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -3973,7 +3973,8 @@ static int smack_socket_getpeersec_stream(struct socket *sock,
* Sets the netlabel socket state on sk from parent
*/
static int smack_socket_getpeersec_dgram(struct socket *sock,
- struct sk_buff *skb, u32 *secid)
+ struct sk_buff *skb,
+ struct lsm_export *l)
{
struct netlbl_lsm_secattr secattr;
@@ -4024,7 +4025,7 @@ static int smack_socket_getpeersec_dgram(struct socket *sock,
#endif
break;
}
- *secid = s;
+ smack_export_secid(l, s);
if (s == 0)
return -EINVAL;
return 0;
--
2.19.1
next prev parent reply other threads:[~2019-05-31 23:32 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-31 23:30 [PATCH 00/58] LSM: Module stacking for AppArmor Casey Schaufler
2019-05-31 23:30 ` [PATCH 01/58] LSM: Infrastructure management of the superblock Casey Schaufler
2019-05-31 23:30 ` [PATCH 02/58] LSM: Infrastructure management of the sock security Casey Schaufler
2019-05-31 23:30 ` [PATCH 03/58] LSM: Infrastructure management of the key security blob Casey Schaufler
2019-05-31 23:30 ` [PATCH 04/58] LSM: Create an lsm_export data structure Casey Schaufler
2019-05-31 23:30 ` [PATCH 05/58] LSM: Use lsm_export in the inode_getsecid hooks Casey Schaufler
2019-05-31 23:30 ` [PATCH 06/58] LSM: Use lsm_export in the cred_getsecid hooks Casey Schaufler
2019-05-31 23:30 ` [PATCH 07/58] LSM: Use lsm_export in the ipc_getsecid and task_getsecid hooks Casey Schaufler
2019-05-31 23:30 ` [PATCH 08/58] LSM: Use lsm_export in the kernel_ask_as hooks Casey Schaufler
2019-05-31 23:31 ` Casey Schaufler [this message]
2019-05-31 23:31 ` [PATCH 10/58] LSM: Use lsm_export in the audit_rule_match hooks Casey Schaufler
2019-05-31 23:31 ` [PATCH 11/58] LSM: Use lsm_export in the secid_to_secctx hooks Casey Schaufler
2019-05-31 23:31 ` [PATCH 12/58] LSM: Use lsm_export in the secctx_to_secid hooks Casey Schaufler
2019-05-31 23:31 ` [PATCH 13/58] LSM: Use lsm_export in security_audit_rule_match Casey Schaufler
2019-05-31 23:31 ` [PATCH 14/58] LSM: Use lsm_export in security_kernel_act_as Casey Schaufler
2019-05-31 23:31 ` [PATCH 15/58] LSM: Use lsm_export in security_socket_getpeersec_dgram Casey Schaufler
2019-05-31 23:31 ` [PATCH 16/58] LSM: Use lsm_export in security_secctx_to_secid Casey Schaufler
2019-05-31 23:31 ` [PATCH 17/58] LSM: Use lsm_export in security_secid_to_secctx Casey Schaufler
-- strict thread matches above, loose matches on Subject: below --
2019-06-02 16:50 [PATCH 00/58] LSM: Module stacking for AppArmor Casey Schaufler
2019-06-02 16:50 ` [PATCH 09/58] LSM: Use lsm_export in the getpeersec_dgram hooks Casey Schaufler
2019-05-31 23:09 [PATCH 00/58] LSM: Module stacking for AppArmor Casey Schaufler
2019-05-31 23:09 ` [PATCH 09/58] LSM: Use lsm_export in the getpeersec_dgram hooks Casey Schaufler
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