Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull security subsystem updates from James Morris:
 "This is basically a maintenance update for the TPM driver and EVM/IMA"

Fix up conflicts in lib/digsig.c and security/integrity/ima/ima_main.c

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (45 commits)
  tpm/ibmvtpm: build only when IBM pseries is configured
  ima: digital signature verification using asymmetric keys
  ima: rename hash calculation functions
  ima: use new crypto_shash API instead of old crypto_hash
  ima: add policy support for file system uuid
  evm: add file system uuid to EVM hmac
  tpm_tis: check pnp_acpi_device return code
  char/tpm/tpm_i2c_stm_st33: drop temporary variable for return value
  char/tpm/tpm_i2c_stm_st33: remove dead assignment in tpm_st33_i2c_probe
  char/tpm/tpm_i2c_stm_st33: Remove __devexit attribute
  char/tpm/tpm_i2c_stm_st33: Don't use memcpy for one byte assignment
  tpm_i2c_stm_st33: removed unused variables/code
  TPM: Wait for TPM_ACCESS tpmRegValidSts to go high at startup
  tpm: Fix cancellation of TPM commands (interrupt mode)
  tpm: Fix cancellation of TPM commands (polling mode)
  tpm: Store TPM vendor ID
  TPM: Work around buggy TPMs that block during continue self test
  tpm_i2c_stm_st33: fix oops when i2c client is unavailable
  char/tpm: Use struct dev_pm_ops for power management
  TPM: STMicroelectronics ST33 I2C BUILD STUFF
  ...

5 files changed, 18 insertions, 16 deletions

diff --git a/security/integrity/evm/Kconfig b/security/integrity/evm/Kconfig
index afbb59d..fea9749 100644
--- a/security/integrity/evm/Kconfig
+++ b/security/integrity/evm/Kconfig
@@ -11,3 +11,16 @@ config EVM
 	  integrity attacks.
 
 	  If you are unsure how to answer this question, answer N.
+
+config EVM_HMAC_VERSION
+	int "EVM HMAC version"
+	depends on EVM
+	default 2
+	help
+	  This options adds EVM HMAC version support.
+	  1 - original version
+	  2 - add per filesystem unique identifier (UUID) (default)
+
+	  WARNING: changing the HMAC calculation method or adding 
+	  additional info to the calculation, requires existing EVM
+	  labeled file systems to be relabeled.  
diff --git a/security/integrity/evm/evm.h b/security/integrity/evm/evm.h
index c885247..30bd1ec 100644
--- a/security/integrity/evm/evm.h
+++ b/security/integrity/evm/evm.h
@@ -24,6 +24,7 @@
 extern int evm_initialized;
 extern char *evm_hmac;
 extern char *evm_hash;
+extern int evm_hmac_version;
 
 extern struct crypto_shash *hmac_tfm;
 extern struct crypto_shash *hash_tfm;
@@ -45,6 +46,5 @@ extern int evm_calc_hash(struct dentry *dentry, const char *req_xattr_name,
 extern int evm_init_hmac(struct inode *inode, const struct xattr *xattr,
 			 char *hmac_val);
 extern int evm_init_secfs(void);
-extern void evm_cleanup_secfs(void);
 
 #endif
diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c
index 7dd538e..3bab89e 100644
--- a/security/integrity/evm/evm_crypto.c
+++ b/security/integrity/evm/evm_crypto.c
@@ -110,6 +110,9 @@ static void hmac_add_misc(struct shash_desc *desc, struct inode *inode,
 	hmac_misc.gid = from_kgid(&init_user_ns, inode->i_gid);
 	hmac_misc.mode = inode->i_mode;
 	crypto_shash_update(desc, (const u8 *)&hmac_misc, sizeof hmac_misc);
+	if (evm_hmac_version > 1)
+		crypto_shash_update(desc, inode->i_sb->s_uuid,
+				    sizeof(inode->i_sb->s_uuid));
 	crypto_shash_final(desc, digest);
 }
 
diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index eb54845..cdbde17 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -26,6 +26,7 @@ int evm_initialized;
 
 char *evm_hmac = "hmac(sha1)";
 char *evm_hash = "sha1";
+int evm_hmac_version = CONFIG_EVM_HMAC_VERSION;
 
 char *evm_config_xattrnames[] = {
 #ifdef CONFIG_SECURITY_SELINUX
@@ -427,15 +428,6 @@ err:
 	return error;
 }
 
-static void __exit cleanup_evm(void)
-{
-	evm_cleanup_secfs();
-	if (hmac_tfm)
-		crypto_free_shash(hmac_tfm);
-	if (hash_tfm)
-		crypto_free_shash(hash_tfm);
-}
-
 /*
  * evm_display_config - list the EVM protected security extended attributes
  */
diff --git a/security/integrity/evm/evm_secfs.c b/security/integrity/evm/evm_secfs.c
index ac76299..30f670a 100644
--- a/security/integrity/evm/evm_secfs.c
+++ b/security/integrity/evm/evm_secfs.c
@@ -100,9 +100,3 @@ int __init evm_init_secfs(void)
 		error = -EFAULT;
 	return error;
 }
-
-void __exit evm_cleanup_secfs(void)
-{
-	if (evm_init_tpm)
-		securityfs_remove(evm_init_tpm);
-}