audit: make audit_inode take struct filename

Keep a pointer to the audit_names "slot" in struct filename.

Have all of the audit_inode callers pass a struct filename ponter to
audit_inode instead of a string pointer. If the aname field is already
populated, then we can skip walking the list altogether and just use it
directly.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 7 insertions, 9 deletions

diff --git a/fs/namei.c b/fs/namei.c
index 6bbd8fdfb1f5..80b162b142f9 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1999,8 +1999,7 @@ static int filename_lookup(int dfd, struct filename *name,
                                                 flags | LOOKUP_REVAL, nd);
 
         if (likely(!retval))
-                audit_inode(name->name, nd->path.dentry,
-                                                flags & LOOKUP_PARENT);
+                audit_inode(name, nd->path.dentry, flags & LOOKUP_PARENT);
         return retval;
 }
 
@@ -2674,7 +2673,6 @@ static int do_last(struct nameidata *nd, struct path *path,
         struct path save_parent = { .dentry = NULL, .mnt = NULL };
         bool retried = false;
         int error;
-        const char *pathname = name->name;
 
         nd->flags &= ~LOOKUP_PARENT;
         nd->flags |= op->intent;
@@ -2690,7 +2688,7 @@ static int do_last(struct nameidata *nd, struct path *path,
                 error = complete_walk(nd);
                 if (error)
                         return error;
-                audit_inode(pathname, nd->path.dentry, 0);
+                audit_inode(name, nd->path.dentry, 0);
                 if (open_flag & O_CREAT) {
                         error = -EISDIR;
                         goto out;
@@ -2700,7 +2698,7 @@ static int do_last(struct nameidata *nd, struct path *path,
                 error = complete_walk(nd);
                 if (error)
                         return error;
-                audit_inode(pathname, dir, 0);
+                audit_inode(name, dir, 0);
                 goto finish_open;
         }
 
@@ -2729,7 +2727,7 @@ static int do_last(struct nameidata *nd, struct path *path,
                 if (error)
                         return error;
 
-                audit_inode(pathname, dir, 0);
+                audit_inode(name, dir, 0);
                 error = -EISDIR;
                 /* trailing slashes? */
                 if (nd->last.name[nd->last.len])
@@ -2759,7 +2757,7 @@ retry_lookup:
                     !S_ISREG(file->f_path.dentry->d_inode->i_mode))
                         will_truncate = false;
 
-                audit_inode(pathname, file->f_path.dentry, 0);
+                audit_inode(name, file->f_path.dentry, 0);
                 goto opened;
         }
 
@@ -2776,7 +2774,7 @@ retry_lookup:
          * create/update audit record if it already exists.
          */
         if (path->dentry->d_inode)
-                audit_inode(pathname, path->dentry, 0);
+                audit_inode(name, path->dentry, 0);
 
         /*
          * If atomic_open() acquired write access it is dropped now due to
@@ -2841,7 +2839,7 @@ finish_lookup:
         error = -ENOTDIR;
         if ((nd->flags & LOOKUP_DIRECTORY) && !nd->inode->i_op->lookup)
                 goto out;
-        audit_inode(pathname, nd->path.dentry, 0);
+        audit_inode(name, nd->path.dentry, 0);
 finish_open:
         if (!S_ISREG(nd->inode->i_mode))
                 will_truncate = false;