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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/fs/ubifs/gc.c
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..
@@ -1,20 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * This file is part of UBIFS.
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  *
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  * Copyright (C) 2006-2008 Nokia Corporation.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License version 2 as published by
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- * the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License along with
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- * this program; if not, write to the Free Software Foundation, Inc., 51
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- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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  *
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7
  * Authors: Adrian Hunter
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8
  *          Artem Bityutskiy (Битюцкий Артём)
..
..
@@ -69,10 +57,6 @@
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 /**
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  * switch_gc_head - switch the garbage collection journal head.
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  * @c: UBIFS file-system description object
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- * @buf: buffer to write
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- * @len: length of the buffer to write
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- * @lnum: LEB number written is returned here
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- * @offs: offset written is returned here
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60
  *
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  * This function switch the GC head to the next LEB which is reserved in
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  * @c->gc_lnum. Returns %0 in case of success, %-EAGAIN if commit is required,
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@@ -254,7 +238,8 @@
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 			     snod->type == UBIFS_DATA_NODE ||
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 			     snod->type == UBIFS_DENT_NODE ||
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 			     snod->type == UBIFS_XENT_NODE ||
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-			     snod->type == UBIFS_TRUN_NODE);
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+			     snod->type == UBIFS_TRUN_NODE ||
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+			     snod->type == UBIFS_AUTH_NODE);
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243
 
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 		if (snod->type != UBIFS_INO_NODE  &&
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 		    snod->type != UBIFS_DATA_NODE &&
..
..
@@ -364,12 +349,13 @@
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349
 
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 	/* Write nodes to their new location. Use the first-fit strategy */
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 	while (1) {
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-		int avail;
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+		int avail, moved = 0;
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 		struct ubifs_scan_node *snod, *tmp;
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354
 
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 		/* Move data nodes */
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 		list_for_each_entry_safe(snod, tmp, &sleb->nodes, list) {
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-			avail = c->leb_size - wbuf->offs - wbuf->used;
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+			avail = c->leb_size - wbuf->offs - wbuf->used -
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+					ubifs_auth_node_sz(c);
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 			if  (snod->len > avail)
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 				/*
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 				 * Do not skip data nodes in order to optimize
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..
@@ -377,14 +363,21 @@
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 				 */
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 				break;
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365
 
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+			err = ubifs_shash_update(c, c->jheads[GCHD].log_hash,
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+						 snod->node, snod->len);
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+			if (err)
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+				goto out;
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+
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 			err = move_node(c, sleb, snod, wbuf);
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 			if (err)
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 				goto out;
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+			moved = 1;
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 		}
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376
 
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 		/* Move non-data nodes */
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 		list_for_each_entry_safe(snod, tmp, &nondata, list) {
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-			avail = c->leb_size - wbuf->offs - wbuf->used;
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+			avail = c->leb_size - wbuf->offs - wbuf->used -
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+					ubifs_auth_node_sz(c);
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 			if (avail < min)
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 				break;
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383
 
..
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@@ -402,9 +395,41 @@
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 				continue;
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 			}
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397
 
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+			err = ubifs_shash_update(c, c->jheads[GCHD].log_hash,
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+						 snod->node, snod->len);
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+			if (err)
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+				goto out;
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+
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 			err = move_node(c, sleb, snod, wbuf);
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404
 			if (err)
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 				goto out;
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+			moved = 1;
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+		}
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+
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+		if (ubifs_authenticated(c) && moved) {
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+			struct ubifs_auth_node *auth;
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+
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+			auth = kmalloc(ubifs_auth_node_sz(c), GFP_NOFS);
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+			if (!auth) {
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+				err = -ENOMEM;
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+				goto out;
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+			}
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+
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+			err = ubifs_prepare_auth_node(c, auth,
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+						c->jheads[GCHD].log_hash);
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+			if (err) {
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+				kfree(auth);
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+				goto out;
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+			}
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+
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+			err = ubifs_wbuf_write_nolock(wbuf, auth,
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+						      ubifs_auth_node_sz(c));
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+			if (err) {
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+				kfree(auth);
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+				goto out;
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+			}
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+
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+			ubifs_add_dirt(c, wbuf->lnum, ubifs_auth_node_sz(c));
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 		}
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 		if (list_empty(&sleb->nodes) && list_empty(&nondata))