integrity/ima/ima_iint.c

19  * ima_iint_find - Return the iint associated with an inode
22  * Return the IMA integrity information (iint) associated with an inode, if the
25  * Return: Found iint or NULL.
39  * files both on overlayfs and on underlying fs, we need to annotate the iint
43 static inline void ima_iint_lockdep_annotate(struct ima_iint_cache *iint,
54 	lockdep_set_class(&iint->mutex, &ima_iint_mutex_key[depth]);
58 static void ima_iint_init_always(struct ima_iint_cache *iint,
61 	iint->ima_hash = NULL;
62 	iint->real_inode.version = 0;
63 	iint->flags = 0UL;
64 	iint->atomic_flags = 0UL;
65 	iint->ima_file_status = INTEGRITY_UNKNOWN;
66 	iint->ima_mmap_status = INTEGRITY_UNKNOWN;
67 	iint->ima_bprm_status = INTEGRITY_UNKNOWN;
68 	iint->ima_read_status = INTEGRITY_UNKNOWN;
69 	iint->ima_creds_status = INTEGRITY_UNKNOWN;
70 	iint->measured_pcrs = 0;
71 	mutex_init(&iint->mutex);
72 	ima_iint_lockdep_annotate(iint, inode);
75 static void ima_iint_free(struct ima_iint_cache *iint)
77 	kfree(iint->ima_hash);
78 	mutex_destroy(&iint->mutex);
79 	kmem_cache_free(ima_iint_cache, iint);
83  * ima_inode_get - Find or allocate an iint associated with an inode
86  * Find an iint associated with an inode, and allocate a new one if not found.
89  * Return: An iint on success, NULL on error.
93 	struct ima_iint_cache *iint;
95 	iint = ima_iint_find(inode);
96 	if (iint)
97 		return iint;
99 	iint = kmem_cache_alloc(ima_iint_cache, GFP_NOFS);
100 	if (!iint)
103 	ima_iint_init_always(iint, inode);
106 	ima_inode_set_iint(inode, iint);
108 	return iint;
115  * Free the iint associated with an inode.
119 	struct ima_iint_cache *iint;
124 	iint = ima_iint_find(inode);
127 	ima_iint_free(iint);
132 	struct ima_iint_cache *iint = (struct ima_iint_cache *)foo;
134 	memset(iint, 0, sizeof(*iint));