[53/59] LSM: Use lsm_context in security_inode_setsecctx

Message ID	20190409213946.1667-54-casey@schaufler-ca.com (mailing list archive)
State	Not Applicable
Headers	show Return-Path: <selinux-owner@kernel.org> 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 Subject: [PATCH 53/59] LSM: Use lsm_context in security_inode_setsecctx Date: Tue, 9 Apr 2019 14:39:40 -0700 Message-Id: <20190409213946.1667-54-casey@schaufler-ca.com> In-Reply-To: <20190409213946.1667-1-casey@schaufler-ca.com> References: <20190409213946.1667-1-casey@schaufler-ca.com> Sender: selinux-owner@vger.kernel.org Precedence: bulk
Series	LSM: Module stacking for AppArmor \| expand [00/59] LSM: Module stacking for AppArmor [01/59] LSM: Infrastructure management of the superblock [02/59] LSM: Infrastructure management of the sock security [03/59] LSM: Infrastructure management of the key security blob [04/59] LSM: Create an lsm_export data structure. [05/59] LSM: Use lsm_export in the inode_getsecid hooks [06/59] LSM: Use lsm_export in the cred_getsecid hooks [07/59] LSM: Use lsm_export in the ipc_getsecid and task_getsecid hooks [08/59] LSM: Use lsm_export in the kernel_ask_as hooks [09/59] LSM: Use lsm_export in the getpeersec_dgram hooks [10/59] LSM: Use lsm_export in the audit_rule_match hooks [11/59] LSM: Fix logical operation in lsm_export checks [12/59] LSM: Use lsm_export in the secid_to_secctx hooks [13/59] LSM: Use lsm_export in the secctx_to_secid hooks [14/59] LSM: Use lsm_export in security_audit_rule_match [15/59] LSM: Use lsm_export in security_kernel_act_as [16/59] LSM: Use lsm_export in security_socket_getpeersec_dgram [17/59] LSM: Use lsm_export in security_secctx_to_secid [18/59] LSM: Use lsm_export in security_secid_to_secctx [19/59] LSM: Use lsm_export in security_ipc_getsecid [20/59] LSM: Use lsm_export in security_task_getsecid [21/59] LSM: Use lsm_export in security_inode_getsecid [22/59] LSM: Use lsm_export in security_cred_getsecid [23/59] Audit: Change audit_sig_sid to audit_sig_lsm [24/59] Audit: Convert target_sid to an lsm_export structure [25/59] Audit: Convert osid to an lsm_export structure [26/59] IMA: Clean out lsm_export scaffolding [27/59] NET: Store LSM access information in the socket blob for UDS [28/59] NET: Remove scaffolding on secmarks [29/59] NET: Remove scaffolding on new secmarks [30/59] NET: Remove netfilter scaffolding for lsm_export [31/59] Netlabel: Replace secids with lsm_export [32/59] LSM: Remove lsm_export scaffolding functions [33/59] IMA: FIXUP prototype using lsm_export [34/59] Smack: Restore the release_secctx hook [35/59] AppArmor: Remove unnecessary hook stub [36/59] LSM: Limit calls to certain module hooks [37/59] LSM: Create a data structure for a security context [38/59] LSM: Use lsm_context in secid_to_secctx hooks [39/59] LSM: Use lsm_context in secctx_to_secid hooks [40/59] LSM: Use lsm_context in inode_getsecctx hooks [41/59] LSM: Use lsm_context in inode_notifysecctx hooks [42/59] LSM: Use lsm_context in dentry_init_security hooks [43/59] LSM: Use lsm_context in security_dentry_init_security [44/59] LSM: Use lsm_context in security_inode_notifysecctx [45/59] LSM: Use lsm_context in security_inode_getsecctx [46/59] LSM: Use lsm_context in security_secctx_to_secid [47/59] LSM: Use lsm_context in release_secctx hooks [48/59] LSM: Use lsm_context in security_release_secctx [49/59] LSM: Use lsm_context in security_secid_to_secctx [50/59] fs: remove lsm_context scaffolding [51/59] LSM: Add the release function to the lsm_context [52/59] LSM: Use lsm_context in inode_setsecctx hooks [53/59] LSM: Use lsm_context in security_inode_setsecctx [54/59] kernfs: remove lsm_context scaffolding [55/59] LSM: Remove unused macro [56/59] LSM: Special handling for secctx lsm hooks [57/59] SELinux: Use blob offset in current_sid [58/59] LSM: Specify which LSM to display with /proc/self/attr/display [59/59] AppArmor: Remove the exclusive flag

Message ID

20190409213946.1667-54-casey@schaufler-ca.com (mailing list archive)

State

Not Applicable

Headers

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
Subject: [PATCH 53/59] LSM: Use lsm_context in security_inode_setsecctx
Date: Tue,  9 Apr 2019 14:39:40 -0700
Message-Id: <20190409213946.1667-54-casey@schaufler-ca.com>
In-Reply-To: <20190409213946.1667-1-casey@schaufler-ca.com>
References: <20190409213946.1667-1-casey@schaufler-ca.com>
Sender: selinux-owner@vger.kernel.org
Precedence: bulk

Series

LSM: Module stacking for AppArmor | expand

Commit Message

Casey Schaufler April 9, 2019, 9:39 p.m. UTC

From: Casey Schaufler <cschaufler@schaufler-ca.com>

Convert security_inode_setsecctx to use the lsm_context structure
instead of a context/secid pair. There is some scaffolding involved
that will be removed when the related data is updated.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
---
 fs/nfsd/nfs4proc.c       | 8 ++++++--
 fs/nfsd/vfs.c            | 7 ++++++-
 include/linux/security.h | 5 +++--
 security/security.c      | 8 ++------
 4 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 0cfd257ffdaf..5b4ea2a317ed 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -54,12 +54,16 @@ 
 static inline void
 nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
 {
+	struct lsm_context lc;
 	struct inode *inode = d_inode(resfh->fh_dentry);
 	int status;
 
 	inode_lock(inode);
-	status = security_inode_setsecctx(resfh->fh_dentry,
-		label->data, label->len);
+
+	lsm_context_init(&lc);
+	lc.context = label->data;
+	lc.len = label->len;
+	status = security_inode_setsecctx(resfh->fh_dentry, &lc);
 	inode_unlock(inode);
 
 	if (status)
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 7dc98e14655d..2d6dd4bb7247 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -531,6 +531,7 @@  __be32 nfsd4_set_nfs4_label(struct svc_rqst *rqstp, struct svc_fh *fhp,
 	__be32 error;
 	int host_error;
 	struct dentry *dentry;
+	struct lsm_context lc;
 
 	error = fh_verify(rqstp, fhp, 0 /* S_IFREG */, NFSD_MAY_SATTR);
 	if (error)
@@ -539,7 +540,11 @@  __be32 nfsd4_set_nfs4_label(struct svc_rqst *rqstp, struct svc_fh *fhp,
 	dentry = fhp->fh_dentry;
 
 	inode_lock(d_inode(dentry));
-	host_error = security_inode_setsecctx(dentry, label->data, label->len);
+
+	lsm_context_init(&lc);
+	lc.context = label->data;
+	lc.len = label->len;
+	host_error = security_inode_setsecctx(dentry, &lc);
 	inode_unlock(d_inode(dentry));
 	return nfserrno(host_error);
 }
diff --git a/include/linux/security.h b/include/linux/security.h
index 76681aca95cb..38bb4a5f52ce 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -441,7 +441,7 @@  void security_release_secctx(struct lsm_context *cp);
 
 void security_inode_invalidate_secctx(struct inode *inode);
 int security_inode_notifysecctx(struct inode *inode, struct lsm_context *cp);
-int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
+int security_inode_setsecctx(struct dentry *dentry, struct lsm_context *cp);
 int security_inode_getsecctx(struct inode *inode, struct lsm_context *cp);
 #else /* CONFIG_SECURITY */
 
@@ -1239,7 +1239,8 @@  static inline int security_inode_notifysecctx(struct inode *inode,
 {
 	return -EOPNOTSUPP;
 }
-static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
+static inline int security_inode_setsecctx(struct dentry *dentry,
+					   struct lsm_context *cp)
 {
 	return -EOPNOTSUPP;
 }
diff --git a/security/security.c b/security/security.c
index 36a7034d1f91..1b4b74af0cb7 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2021,13 +2021,9 @@  int security_inode_notifysecctx(struct inode *inode, struct lsm_context *cp)
 }
 EXPORT_SYMBOL(security_inode_notifysecctx);
 
-int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
+int security_inode_setsecctx(struct dentry *dentry, struct lsm_context *cp)
 {
-	struct lsm_context lc;
-
-	lc.context = ctx;
-	lc.len = ctxlen;
-	return call_int_hook(inode_setsecctx, 0, dentry, &lc);
+	return call_int_hook(inode_setsecctx, 0, dentry, cp);
 }
 EXPORT_SYMBOL(security_inode_setsecctx);

[53/59] LSM: Use lsm_context in security_inode_setsecctx

Commit Message

Patch