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

Pull security subsystem updates from James Morris:
 "Highlights:

   - Integrity: add local fs integrity verification to detect offline
     attacks
   - Integrity: add digital signature verification
   - Simple stacking of Yama with other LSMs (per LSS discussions)
   - IBM vTPM support on ppc64
   - Add new driver for Infineon I2C TIS TPM
   - Smack: add rule revocation for subject labels"

Fixed conflicts with the user namespace support in kernel/auditsc.c and
security/integrity/ima/ima_policy.c.

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (39 commits)
  Documentation: Update git repository URL for Smack userland tools
  ima: change flags container data type
  Smack: setprocattr memory leak fix
  Smack: implement revoking all rules for a subject label
  Smack: remove task_wait() hook.
  ima: audit log hashes
  ima: generic IMA action flag handling
  ima: rename ima_must_appraise_or_measure
  audit: export audit_log_task_info
  tpm: fix tpm_acpi sparse warning on different address spaces
  samples/seccomp: fix 31 bit build on s390
  ima: digital signature verification support
  ima: add support for different security.ima data types
  ima: add ima_inode_setxattr/removexattr function and calls
  ima: add inode_post_setattr call
  ima: replace iint spinblock with rwlock/read_lock
  ima: allocating iint improvements
  ima: add appraise action keywords and default rules
  ima: integrity appraisal extension
  vfs: move ima_file_free before releasing the file
  ...

1 files changed, 7 insertions, 1 deletions

diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c
index 9b3ade7468b2..b21ee5b5495a 100644
--- a/security/integrity/ima/ima_crypto.c
+++ b/security/integrity/ima/ima_crypto.c
@@ -48,7 +48,7 @@ int ima_calc_hash(struct file *file, char *digest)
 	struct scatterlist sg[1];
 	loff_t i_size, offset = 0;
 	char *rbuf;
-	int rc;
+	int rc, read = 0;
 
 	rc = init_desc(&desc);
 	if (rc != 0)
@@ -59,6 +59,10 @@ int ima_calc_hash(struct file *file, char *digest)
 		rc = -ENOMEM;
 		goto out;
 	}
+	if (!(file->f_mode & FMODE_READ)) {
+		file->f_mode |= FMODE_READ;
+		read = 1;
+	}
 	i_size = i_size_read(file->f_dentry->d_inode);
 	while (offset < i_size) {
 		int rbuf_len;
@@ -80,6 +84,8 @@ int ima_calc_hash(struct file *file, char *digest)
 	kfree(rbuf);
 	if (!rc)
 		rc = crypto_hash_final(&desc, digest);
+	if (read)
+		file->f_mode &= ~FMODE_READ;
 out:
 	crypto_free_hash(desc.tfm);
 	return rc;