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Diffstat (limited to 'security/integrity/ima/ima_main.c')
-rw-r--r--security/integrity/ima/ima_main.c28
1 files changed, 21 insertions, 7 deletions
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 09baa335ebc7..2917f980bf30 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -88,8 +88,6 @@ static void ima_rdwr_violation_check(struct file *file)
if (!S_ISREG(inode->i_mode) || !ima_initialized)
return;
- mutex_lock(&inode->i_mutex); /* file metadata: permissions, xattr */
-
if (mode & FMODE_WRITE) {
if (atomic_read(&inode->i_readcount) && IS_IMA(inode)) {
struct integrity_iint_cache *iint;
@@ -104,8 +102,6 @@ static void ima_rdwr_violation_check(struct file *file)
send_writers = true;
}
- mutex_unlock(&inode->i_mutex);
-
if (!send_tomtou && !send_writers)
return;
@@ -163,7 +159,7 @@ static int process_measurement(struct file *file, const char *filename,
{
struct inode *inode = file_inode(file);
struct integrity_iint_cache *iint;
- struct ima_template_desc *template_desc = ima_template_desc_current();
+ struct ima_template_desc *template_desc;
char *pathbuf = NULL;
const char *pathname = NULL;
int rc = -ENOMEM, action, must_appraise, _func;
@@ -207,6 +203,7 @@ static int process_measurement(struct file *file, const char *filename,
goto out_digsig;
}
+ template_desc = ima_template_desc_current();
if (strcmp(template_desc->name, IMA_TEMPLATE_IMA_NAME) == 0) {
if (action & IMA_APPRAISE_SUBMASK)
xattr_ptr = &xattr_value;
@@ -322,14 +319,31 @@ int ima_module_check(struct file *file)
return process_measurement(file, NULL, MAY_EXEC, MODULE_CHECK);
}
+int ima_fw_from_file(struct file *file, char *buf, size_t size)
+{
+ if (!file) {
+ if ((ima_appraise & IMA_APPRAISE_FIRMWARE) &&
+ (ima_appraise & IMA_APPRAISE_ENFORCE))
+ return -EACCES; /* INTEGRITY_UNKNOWN */
+ return 0;
+ }
+ return process_measurement(file, NULL, MAY_EXEC, FIRMWARE_CHECK);
+}
+
static int __init init_ima(void)
{
int error;
hash_setup(CONFIG_IMA_DEFAULT_HASH);
error = ima_init();
- if (!error)
- ima_initialized = 1;
+ if (error)
+ goto out;
+
+ error = ima_init_keyring(INTEGRITY_KEYRING_IMA);
+ if (error)
+ goto out;
+ ima_initialized = 1;
+out:
return error;
}