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Diffstat (limited to 'security/integrity/ima/ima_main.c')
-rw-r--r--security/integrity/ima/ima_main.c50
1 files changed, 38 insertions, 12 deletions
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index b17be79b9cf2..be8294915cf7 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -54,6 +54,7 @@ static void ima_rdwr_violation_check(struct file *file)
fmode_t mode = file->f_mode;
int rc;
bool send_tomtou = false, send_writers = false;
+ unsigned char *pathname = NULL, *pathbuf = NULL;
if (!S_ISREG(inode->i_mode) || !ima_initialized)
return;
@@ -75,12 +76,27 @@ static void ima_rdwr_violation_check(struct file *file)
out:
mutex_unlock(&inode->i_mutex);
+ if (!send_tomtou && !send_writers)
+ return;
+
+ /* We will allow 11 spaces for ' (deleted)' to be appended */
+ pathbuf = kmalloc(PATH_MAX + 11, GFP_KERNEL);
+ if (pathbuf) {
+ pathname = d_path(&file->f_path, pathbuf, PATH_MAX + 11);
+ if (IS_ERR(pathname))
+ pathname = NULL;
+ else if (strlen(pathname) > IMA_EVENT_NAME_LEN_MAX)
+ pathname = NULL;
+ }
if (send_tomtou)
- ima_add_violation(inode, dentry->d_name.name, "invalid_pcr",
- "ToMToU");
+ ima_add_violation(inode,
+ !pathname ? dentry->d_name.name : pathname,
+ "invalid_pcr", "ToMToU");
if (send_writers)
- ima_add_violation(inode, dentry->d_name.name, "invalid_pcr",
- "open_writers");
+ ima_add_violation(inode,
+ !pathname ? dentry->d_name.name : pathname,
+ "invalid_pcr", "open_writers");
+ kfree(pathbuf);
}
static void ima_check_last_writer(struct integrity_iint_cache *iint,
@@ -123,6 +139,7 @@ static int process_measurement(struct file *file, const unsigned char *filename,
{
struct inode *inode = file->f_dentry->d_inode;
struct integrity_iint_cache *iint;
+ unsigned char *pathname = NULL, *pathbuf = NULL;
int rc = 0;
if (!ima_initialized || !S_ISREG(inode->i_mode))
@@ -147,8 +164,21 @@ retry:
goto out;
rc = ima_collect_measurement(iint, file);
- if (!rc)
- ima_store_measurement(iint, file, filename);
+ if (rc != 0)
+ goto out;
+
+ if (function != BPRM_CHECK) {
+ /* We will allow 11 spaces for ' (deleted)' to be appended */
+ pathbuf = kmalloc(PATH_MAX + 11, GFP_KERNEL);
+ if (pathbuf) {
+ pathname =
+ d_path(&file->f_path, pathbuf, PATH_MAX + 11);
+ if (IS_ERR(pathname))
+ pathname = NULL;
+ }
+ }
+ ima_store_measurement(iint, file, !pathname ? filename : pathname);
+ kfree(pathbuf);
out:
mutex_unlock(&iint->mutex);
return rc;
@@ -228,15 +258,11 @@ static int __init init_ima(void)
int error;
error = ima_init();
- ima_initialized = 1;
+ if (!error)
+ ima_initialized = 1;
return error;
}
-static void __exit cleanup_ima(void)
-{
- ima_cleanup();
-}
-
late_initcall(init_ima); /* Start IMA after the TPM is available */
MODULE_DESCRIPTION("Integrity Measurement Architecture");