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-rw-r--r--security/integrity/ima/ima_fs.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/security/integrity/ima/ima_fs.c b/security/integrity/ima/ima_fs.c
index ffbe259700b..3305a961586 100644
--- a/security/integrity/ima/ima_fs.c
+++ b/security/integrity/ima/ima_fs.c
@@ -15,6 +15,7 @@
* implemenents security file system for reporting
* current measurement list and IMA statistics
*/
+#include <linux/fcntl.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/rculist.h>
@@ -283,6 +284,9 @@ static atomic_t policy_opencount = ATOMIC_INIT(1);
*/
int ima_open_policy(struct inode * inode, struct file * filp)
{
+ /* No point in being allowed to open it if you aren't going to write */
+ if (!(filp->f_flags & O_WRONLY))
+ return -EACCES;
if (atomic_dec_and_test(&policy_opencount))
return 0;
return -EBUSY;
@@ -349,7 +353,7 @@ int ima_fs_init(void)
goto out;
ima_policy = securityfs_create_file("policy",
- S_IRUSR | S_IRGRP | S_IWUSR,
+ S_IWUSR,
ima_dir, NULL,
&ima_measure_policy_ops);
if (IS_ERR(ima_policy))