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Date:   Thu,  8 Apr 2021 16:36:50 +0800
From:    Zhongjun Tan <hbut_tan@....com>
To:     steffen.klassert@...unet.com, herbert@...dor.apana.org.au,
        davem@...emloft.net, kuba@...nel.org, jmorris@...ei.org,
        serge@...lyn.com, stephen.smalley.work@...il.com,
        eparis@...isplace.org, keescook@...omium.org,
        ebiederm@...ssion.com, gregkh@...uxfoundation.org,
        dhowells@...hat.com, kpsingh@...gle.com,
        christian.brauner@...ntu.com, zohar@...ux.ibm.com
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        linux-security-module@...r.kernel.org, selinux@...r.kernel.org,
        Zhongjun Tan <tanzhongjun@...ong.com>
Subject: [PATCH] selinux:Delete selinux_xfrm_policy_lookup()  useless argument

From: Zhongjun Tan <tanzhongjun@...ong.com>

Delete selinux selinux_xfrm_policy_lookup() useless argument.

Signed-off-by: Zhongjun Tan <tanzhongjun@...ong.com>
---
 include/linux/lsm_hook_defs.h   | 3 +--
 include/linux/security.h        | 4 ++--
 net/xfrm/xfrm_policy.c          | 6 ++----
 security/security.c             | 4 ++--
 security/selinux/include/xfrm.h | 2 +-
 security/selinux/xfrm.c         | 2 +-
 6 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
index 04c0179..2adeea4 100644
--- a/include/linux/lsm_hook_defs.h
+++ b/include/linux/lsm_hook_defs.h
@@ -358,8 +358,7 @@
 	 struct xfrm_sec_ctx *polsec, u32 secid)
 LSM_HOOK(void, LSM_RET_VOID, xfrm_state_free_security, struct xfrm_state *x)
 LSM_HOOK(int, 0, xfrm_state_delete_security, struct xfrm_state *x)
-LSM_HOOK(int, 0, xfrm_policy_lookup, struct xfrm_sec_ctx *ctx, u32 fl_secid,
-	 u8 dir)
+LSM_HOOK(int, 0, xfrm_policy_lookup, struct xfrm_sec_ctx *ctx, u32 fl_secid)
 LSM_HOOK(int, 1, xfrm_state_pol_flow_match, struct xfrm_state *x,
 	 struct xfrm_policy *xp, const struct flowi_common *flic)
 LSM_HOOK(int, 0, xfrm_decode_session, struct sk_buff *skb, u32 *secid,
diff --git a/include/linux/security.h b/include/linux/security.h
index 06f7c50..24eda04 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1681,7 +1681,7 @@ int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
 				      struct xfrm_sec_ctx *polsec, u32 secid);
 int security_xfrm_state_delete(struct xfrm_state *x);
 void security_xfrm_state_free(struct xfrm_state *x);
-int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
+int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid);
 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
 				       struct xfrm_policy *xp,
 				       const struct flowi_common *flic);
@@ -1732,7 +1732,7 @@ static inline int security_xfrm_state_delete(struct xfrm_state *x)
 	return 0;
 }
 
-static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
+static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid)
 {
 	return 0;
 }
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 156347f..d5d934e 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1902,8 +1902,7 @@ static int xfrm_policy_match(const struct xfrm_policy *pol,
 
 	match = xfrm_selector_match(sel, fl, family);
 	if (match)
-		ret = security_xfrm_policy_lookup(pol->security, fl->flowi_secid,
-						  dir);
+		ret = security_xfrm_policy_lookup(pol->security, fl->flowi_secid);
 	return ret;
 }
 
@@ -2181,8 +2180,7 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(const struct sock *sk, int dir,
 				goto out;
 			}
 			err = security_xfrm_policy_lookup(pol->security,
-						      fl->flowi_secid,
-						      dir);
+						      fl->flowi_secid);
 			if (!err) {
 				if (!xfrm_pol_hold_rcu(pol))
 					goto again;
diff --git a/security/security.c b/security/security.c
index b38155b..0c1c979 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2466,9 +2466,9 @@ void security_xfrm_state_free(struct xfrm_state *x)
 	call_void_hook(xfrm_state_free_security, x);
 }
 
-int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
+int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid)
 {
-	return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
+	return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid);
 }
 
 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h
index 0a6f34a..7415940 100644
--- a/security/selinux/include/xfrm.h
+++ b/security/selinux/include/xfrm.h
@@ -23,7 +23,7 @@ int selinux_xfrm_state_alloc_acquire(struct xfrm_state *x,
 				     struct xfrm_sec_ctx *polsec, u32 secid);
 void selinux_xfrm_state_free(struct xfrm_state *x);
 int selinux_xfrm_state_delete(struct xfrm_state *x);
-int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
+int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid);
 int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
 				      struct xfrm_policy *xp,
 				      const struct flowi_common *flic);
diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index 634f3db..be83e5c 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -150,7 +150,7 @@ static int selinux_xfrm_delete(struct xfrm_sec_ctx *ctx)
  * LSM hook implementation that authorizes that a flow can use a xfrm policy
  * rule.
  */
-int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
+int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid)
 {
 	int rc;
 
-- 
1.9.1


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