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-rw-r--r--kernel/auditsc.c57
1 files changed, 30 insertions, 27 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 0160a68b4d7..d147585e9ef 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -2189,6 +2189,7 @@ out:
* __audit_inode_child - collect inode info for created/removed objects
* @parent: inode of dentry parent
* @dentry: dentry being audited
+ * @type: AUDIT_TYPE_* value that we're looking for
*
* For syscalls that create or remove filesystem objects, audit_inode
* can only collect information for the filesystem object's parent.
@@ -2199,13 +2200,13 @@ out:
* unsuccessful attempts.
*/
void __audit_inode_child(const struct inode *parent,
- const struct dentry *dentry)
+ const struct dentry *dentry,
+ const unsigned char type)
{
struct audit_context *context = current->audit_context;
- const char *found_parent = NULL, *found_child = NULL;
const struct inode *inode = dentry->d_inode;
const char *dname = dentry->d_name.name;
- struct audit_names *n;
+ struct audit_names *n, *found_parent = NULL, *found_child = NULL;
if (!context->in_syscall)
return;
@@ -2213,63 +2214,65 @@ void __audit_inode_child(const struct inode *parent,
if (inode)
handle_one(inode);
- /* parent is more likely, look for it first */
+ /* look for a parent entry first */
list_for_each_entry(n, &context->names_list, list) {
- if (!n->name)
+ if (!n->name || n->type != AUDIT_TYPE_PARENT)
continue;
if (n->ino == parent->i_ino &&
!audit_compare_dname_path(dname, n->name, n->name_len)) {
- found_parent = n->name;
- goto add_names;
+ found_parent = n;
+ break;
}
}
- /* no matching parent, look for matching child */
+ /* is there a matching child entry? */
list_for_each_entry(n, &context->names_list, list) {
- if (!n->name)
+ /* can only match entries that have a name */
+ if (!n->name || n->type != type)
+ continue;
+
+ /* if we found a parent, make sure this one is a child of it */
+ if (found_parent && (n->name != found_parent->name))
continue;
- /* strcmp() is the more likely scenario */
if (!strcmp(dname, n->name) ||
!audit_compare_dname_path(dname, n->name,
+ found_parent ?
+ found_parent->name_len :
AUDIT_NAME_FULL)) {
- if (inode)
- audit_copy_inode(n, dentry, inode);
- else
- n->ino = (unsigned long)-1;
- n->type = AUDIT_TYPE_NORMAL;
- found_child = n->name;
- goto add_names;
+ found_child = n;
+ break;
}
}
-add_names:
if (!found_parent) {
- n = audit_alloc_name(context, AUDIT_TYPE_NORMAL);
+ /* create a new, "anonymous" parent record */
+ n = audit_alloc_name(context, AUDIT_TYPE_PARENT);
if (!n)
return;
audit_copy_inode(n, NULL, parent);
}
if (!found_child) {
- n = audit_alloc_name(context, AUDIT_TYPE_NORMAL);
- if (!n)
+ found_child = audit_alloc_name(context, type);
+ if (!found_child)
return;
/* Re-use the name belonging to the slot for a matching parent
* directory. All names for this context are relinquished in
* audit_free_names() */
if (found_parent) {
- n->name = found_parent;
- n->name_len = AUDIT_NAME_FULL;
+ found_child->name = found_parent->name;
+ found_child->name_len = AUDIT_NAME_FULL;
/* don't call __putname() */
- n->name_put = false;
+ found_child->name_put = false;
}
-
- if (inode)
- audit_copy_inode(n, dentry, inode);
}
+ if (inode)
+ audit_copy_inode(found_child, dentry, inode);
+ else
+ found_child->ino = (unsigned long)-1;
}
EXPORT_SYMBOL_GPL(__audit_inode_child);