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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 13/90] LSM: Use lsm_export in the secctx_to_secid hooks
Date: Thu, 18 Apr 2019 17:45:00 -0700
Message-ID: <20190419004617.64627-14-casey@schaufler-ca.com> (raw)
In-Reply-To: <20190419004617.64627-1-casey@schaufler-ca.com>

Convert the secctx_to_secid hooks to use the lsm_export
structure instead of a u32 secid. There is some scaffolding
involved that will be removed when security_secctx_to_secid()
is updated.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
---
 include/linux/lsm_hooks.h         |  7 ++++---
 security/apparmor/include/secid.h |  3 ++-
 security/apparmor/secid.c         |  9 +++++----
 security/security.c               |  8 ++++++--
 security/selinux/hooks.c          | 12 +++++++++---
 security/smack/smack_lsm.c        |  7 ++++---
 6 files changed, 30 insertions(+), 16 deletions(-)

diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 11ace5c923bd..af0bcdf8fcfe 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -1327,8 +1327,8 @@
  *	context.
  *	@seclen pointer which contains the length of the data
  * @secctx_to_secid:
- *	Convert security context to secid.
- *	@secid contains the pointer to the generated security ID.
+ *	Convert security context to exported lsm data.
+ *	@l contains the pointer to the generated security data.
  *	@secdata contains the security context.
  *
  * @release_secctx:
@@ -1674,7 +1674,8 @@ union security_list_options {
 	int (*ismaclabel)(const char *name);
 	int (*secid_to_secctx)(struct lsm_export *l, char **secdata,
 				u32 *seclen);
-	int (*secctx_to_secid)(const char *secdata, u32 seclen, u32 *secid);
+	int (*secctx_to_secid)(const char *secdata, u32 seclen,
+				struct lsm_export *l);
 	void (*release_secctx)(char *secdata, u32 seclen);
 
 	void (*inode_invalidate_secctx)(struct inode *inode);
diff --git a/security/apparmor/include/secid.h b/security/apparmor/include/secid.h
index 03369183f512..5381eff03d4f 100644
--- a/security/apparmor/include/secid.h
+++ b/security/apparmor/include/secid.h
@@ -27,7 +27,8 @@ struct aa_label;
 
 struct aa_label *aa_secid_to_label(struct lsm_export *l);
 int apparmor_secid_to_secctx(struct lsm_export *l, char **secdata, u32 *seclen);
-int apparmor_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
+int apparmor_secctx_to_secid(const char *secdata, u32 seclen,
+			     struct lsm_export *l);
 void apparmor_release_secctx(char *secdata, u32 seclen);
 
 
diff --git a/security/apparmor/secid.c b/security/apparmor/secid.c
index ab4dc165e43e..69d98a89db75 100644
--- a/security/apparmor/secid.c
+++ b/security/apparmor/secid.c
@@ -75,9 +75,9 @@ struct aa_label *aa_secid_to_label(struct lsm_export *l)
 	return label;
 }
 
-static inline void aa_import_secid(struct lsm_export *l, u32 secid)
+static inline void aa_export_secid(struct lsm_export *l, u32 secid)
 {
-	l->flags = LSM_EXPORT_APPARMOR;
+	l->flags |= LSM_EXPORT_APPARMOR;
 	l->apparmor = secid;
 }
 
@@ -111,7 +111,8 @@ int apparmor_secid_to_secctx(struct lsm_export *l, char **secdata, u32 *seclen)
 	return 0;
 }
 
-int apparmor_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
+int apparmor_secctx_to_secid(const char *secdata, u32 seclen,
+			     struct lsm_export *l)
 {
 	struct aa_label *label;
 
@@ -119,7 +120,7 @@ int apparmor_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 				    seclen, GFP_KERNEL, false, false);
 	if (IS_ERR(label))
 		return PTR_ERR(label);
-	*secid = label->secid;
+	aa_export_secid(l, label->secid);
 
 	return 0;
 }
diff --git a/security/security.c b/security/security.c
index adf4cb768665..1645ebe06715 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2012,8 +2012,12 @@ EXPORT_SYMBOL(security_secid_to_secctx);
 
 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 {
-	*secid = 0;
-	return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
+	struct lsm_export data = { .flags = LSM_EXPORT_NONE };
+	int rc;
+
+	rc = call_int_hook(secctx_to_secid, 0, secdata, seclen, &data);
+	lsm_export_secid(&data, secid);
+	return rc;
 }
 EXPORT_SYMBOL(security_secctx_to_secid);
 
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 16d902158e8a..7dd333f133db 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -6311,10 +6311,16 @@ static int selinux_secid_to_secctx(struct lsm_export *l, char **secdata,
 				       secdata, seclen);
 }
 
-static int selinux_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
+static int selinux_secctx_to_secid(const char *secdata, u32 seclen,
+				   struct lsm_export *l)
 {
-	return security_context_to_sid(&selinux_state, secdata, seclen,
-				       secid, GFP_KERNEL);
+	u32 secid;
+	int rc;
+
+	rc = security_context_to_sid(&selinux_state, secdata, seclen,
+				     &secid, GFP_KERNEL);
+	selinux_export_secid(l, secid);
+	return rc;
 }
 
 static void selinux_release_secctx(char *secdata, u32 seclen)
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 809af981f14c..ecd636e5c75c 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -4456,14 +4456,15 @@ static int smack_secid_to_secctx(struct lsm_export *l, char **secdata,
  *
  * Exists for audit and networking code.
  */
-static int smack_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
+static int smack_secctx_to_secid(const char *secdata, u32 seclen,
+				 struct lsm_export *l)
 {
 	struct smack_known *skp = smk_find_entry(secdata);
 
 	if (skp)
-		*secid = skp->smk_secid;
+		smack_export_secid(l, skp->smk_secid);
 	else
-		*secid = 0;
+		smack_export_secid(l, 0);
 	return 0;
 }
 
-- 
2.19.1


  parent reply index

Thread overview: 89+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-19  0:44 [PATCH 00/90] LSM: Module stacking for all Casey Schaufler
2019-04-19  0:44 ` [PATCH 01/90] LSM: Infrastructure management of the superblock Casey Schaufler
2019-04-19  0:44 ` [PATCH 02/90] LSM: Infrastructure management of the sock security Casey Schaufler
2019-04-19  0:44 ` [PATCH 03/90] LSM: Infrastructure management of the key security blob Casey Schaufler
2019-04-19  0:44 ` [PATCH 04/90] LSM: Create an lsm_export data structure Casey Schaufler
2019-04-19  0:44 ` [PATCH 05/90] LSM: Use lsm_export in the inode_getsecid hooks Casey Schaufler
2019-04-19  0:44 ` [PATCH 06/90] LSM: Use lsm_export in the cred_getsecid hooks Casey Schaufler
2019-04-19  0:44 ` [PATCH 07/90] LSM: Use lsm_export in the ipc_getsecid and task_getsecid hooks Casey Schaufler
2019-04-19  0:44 ` [PATCH 08/90] LSM: Use lsm_export in the kernel_ask_as hooks Casey Schaufler
2019-04-19  0:44 ` [PATCH 09/90] LSM: Use lsm_export in the getpeersec_dgram hooks Casey Schaufler
2019-04-19  0:44 ` [PATCH 10/90] LSM: Use lsm_export in the audit_rule_match hooks Casey Schaufler
2019-04-19  0:44 ` [PATCH 11/90] LSM: Fix logical operation in lsm_export checks Casey Schaufler
2019-04-19  0:44 ` [PATCH 12/90] LSM: Use lsm_export in the secid_to_secctx hooks Casey Schaufler
2019-04-19  0:45 ` Casey Schaufler [this message]
2019-04-19  0:45 ` [PATCH 14/90] LSM: Use lsm_export in security_audit_rule_match Casey Schaufler
2019-04-19  0:45 ` [PATCH 15/90] LSM: Use lsm_export in security_kernel_act_as Casey Schaufler
2019-04-19  0:45 ` [PATCH 16/90] LSM: Use lsm_export in security_socket_getpeersec_dgram Casey Schaufler
2019-04-19  0:45 ` [PATCH 17/90] LSM: Use lsm_export in security_secctx_to_secid Casey Schaufler
2019-04-19  0:45 ` [PATCH 18/90] LSM: Use lsm_export in security_secid_to_secctx Casey Schaufler
2019-04-19  0:45 ` [PATCH 19/90] LSM: Use lsm_export in security_ipc_getsecid Casey Schaufler
2019-04-19  0:45 ` [PATCH 20/90] LSM: Use lsm_export in security_task_getsecid Casey Schaufler
2019-04-19  0:45 ` [PATCH 21/90] LSM: Use lsm_export in security_inode_getsecid Casey Schaufler
2019-04-19  0:45 ` [PATCH 22/90] LSM: Use lsm_export in security_cred_getsecid Casey Schaufler
2019-04-19  0:45 ` [PATCH 23/90] Audit: Change audit_sig_sid to audit_sig_lsm Casey Schaufler
2019-04-19  0:45 ` [PATCH 24/90] Audit: Convert target_sid to an lsm_export structure Casey Schaufler
2019-04-19  0:45 ` [PATCH 25/90] Audit: Convert osid " Casey Schaufler
2019-04-19  0:45 ` [PATCH 26/90] IMA: Clean out lsm_export scaffolding Casey Schaufler
2019-04-19  0:45 ` [PATCH 27/90] NET: Change the UNIXCB from a secid to an lsm_export Casey Schaufler
2019-04-19  0:45 ` [PATCH 28/90] NET: Remove scaffolding on secmarks Casey Schaufler
2019-04-19  0:45 ` [PATCH 29/90] NET: Remove scaffolding on new secmarks Casey Schaufler
2019-04-19  0:45 ` [PATCH 30/90] NET: Remove netfilter scaffolding for lsm_export Casey Schaufler
2019-04-19  0:45 ` [PATCH 31/90] Netlabel: Replace secids with lsm_export Casey Schaufler
2019-04-19  0:45 ` [PATCH 32/90] LSM: Remove lsm_export scaffolding functions Casey Schaufler
2019-04-19  0:45 ` [PATCH 33/90] IMA: FIXUP prototype using lsm_export Casey Schaufler
2019-04-19  0:45 ` [PATCH 34/90] Smack: Restore the release_secctx hook Casey Schaufler
2019-04-19  0:45 ` [PATCH 35/90] AppArmor: Remove unnecessary hook stub Casey Schaufler
2019-04-19  0:45 ` [PATCH 36/90] LSM: Limit calls to certain module hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 37/90] LSM: Create a data structure for a security context Casey Schaufler
2019-04-19  0:45 ` [PATCH 38/90] LSM: Use lsm_context in secid_to_secctx hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 39/90] LSM: Use lsm_context in secctx_to_secid hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 40/90] LSM: Use lsm_context in inode_getsecctx hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 41/90] LSM: Use lsm_context in inode_notifysecctx hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 42/90] LSM: Use lsm_context in dentry_init_security hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 43/90] LSM: Use lsm_context in security_dentry_init_security Casey Schaufler
2019-04-19  0:45 ` [PATCH 44/90] LSM: Use lsm_context in security_inode_notifysecctx Casey Schaufler
2019-04-19  0:45 ` [PATCH 45/90] LSM: Use lsm_context in security_inode_getsecctx Casey Schaufler
2019-04-19  0:45 ` [PATCH 46/90] LSM: Use lsm_context in security_secctx_to_secid Casey Schaufler
2019-04-19  0:45 ` [PATCH 47/90] LSM: Use lsm_context in release_secctx hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 48/90] LSM: Use lsm_context in security_release_secctx Casey Schaufler
2019-04-19  0:45 ` [PATCH 49/90] LSM: Use lsm_context in security_secid_to_secctx Casey Schaufler
2019-04-19  0:45 ` [PATCH 50/90] fs: remove lsm_context scaffolding Casey Schaufler
2019-04-19  0:45 ` [PATCH 51/90] LSM: Add the release function to the lsm_context Casey Schaufler
2019-04-19  0:45 ` [PATCH 52/90] LSM: Use lsm_context in inode_setsecctx hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 53/90] LSM: Use lsm_context in security_inode_setsecctx Casey Schaufler
2019-04-19  0:45 ` [PATCH 54/90] kernfs: remove lsm_context scaffolding Casey Schaufler
2019-04-19  0:45 ` [PATCH 55/90] LSM: Remove unused macro Casey Schaufler
2019-04-19  0:45 ` [PATCH 56/90] LSM: Special handling for secctx lsm hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 57/90] SELinux: Use blob offset in current_sid Casey Schaufler
2019-04-19  0:45 ` [PATCH 58/90] LSM: Specify which LSM to display Casey Schaufler
2019-04-19  0:45 ` [PATCH 59/90] AppArmor: Remove the exclusive flag Casey Schaufler
2019-04-19  0:45 ` [PATCH 60/90] LSM: Add secmark_relabel_packet to the set of one call hooks Casey Schaufler
2019-04-19  0:45 ` [PATCH 61/90] LSM: Make getting the secmark right cleaner Casey Schaufler
2019-04-19  0:45 ` [PATCH 62/90] netfilter: Fix memory leak introduced with lsm_context Casey Schaufler
2019-04-19  0:45 ` [PATCH 63/90] Smack: Consolidate secmark conversions Casey Schaufler
2019-04-19  0:45 ` [PATCH 64/90] netfilter: Remove unnecessary NULL check in lsm_context Casey Schaufler
2019-04-19  0:45 ` [PATCH 65/90] LSM: Add secmark refcounting to call_one list Casey Schaufler
2019-04-19  0:45 ` [PATCH 66/90] LSM: refactor security_setprocattr Casey Schaufler
2019-04-19  0:45 ` [PATCH 67/90] Smack: Detect if secmarks can be safely used Casey Schaufler
2019-04-19  0:45 ` [PATCH 68/90] LSM: Support multiple LSMs using inode_init_security Casey Schaufler
2019-04-19  0:45 ` [PATCH 69/90] LSM: Use full security context in security_inode_setsecctx Casey Schaufler
2019-04-22 13:13   ` Tetsuo Handa
2019-04-22 20:45     ` Casey Schaufler
2019-04-22 21:01       ` Tetsuo Handa
2019-04-19  0:45 ` [PATCH 70/90] LSM: Correct handling of ENOSYS in inode_setxattr Casey Schaufler
2019-04-19  0:45 ` [PATCH 71/90] LSM: Infrastructure security blobs for mount options Casey Schaufler
2019-04-19  0:45 ` [PATCH 72/90] LSM: Fix for security_init_inode_security Casey Schaufler
2019-04-19  0:46 ` [PATCH 73/90] Smack: Advertise the secid to netlabel Casey Schaufler
2019-04-19  0:46 ` [PATCH 74/90] LSM: Change error detection for UDP peer security Casey Schaufler
2019-04-19  0:46 ` [PATCH 75/90] Smack: Fix setting of the CIPSO MLS_CAT flags Casey Schaufler
2019-04-19  0:46 ` [PATCH 76/90] Smack: Set netlabel flags properly on new label import Casey Schaufler
2019-04-19  0:46 ` [PATCH 77/90] Netlabel: Add a secattr comparison API function Casey Schaufler
2019-04-19  0:46 ` [PATCH 78/90] Smack: Let netlabel do the work on the ambient domain Casey Schaufler
2019-04-19  0:46 ` [PATCH 79/90] Smack: Don't set the socket label on each send Casey Schaufler
2019-04-19  0:46 ` [PATCH 80/90] Smack: Let netlabel do the work on connections Casey Schaufler
2019-04-19  0:46 ` [PATCH 81/90] Netlabel: Return the labeling type on socket Casey Schaufler
2019-04-19 15:27 ` [PATCH 00/90] LSM: Module stacking for all Stephen Smalley
2019-04-21 17:31   ` Casey Schaufler
2019-04-22 12:46     ` Stephen Smalley
2019-04-22 16:10       ` Casey Schaufler

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