io.c (cdd38c5f1ce4398ec58fec95904b75824daab7b5) io.c (2e3cbf425804fb44a005e252f88f93dff108c911)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * This file is part of UBIFS.
4 *
5 * Copyright (C) 2006-2008 Nokia Corporation.
6 * Copyright (C) 2006, 2007 University of Szeged, Hungary
7 *
8 * Authors: Artem Bityutskiy (Битюцкий Артём)

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189 if (err < 0) {
190 ubifs_err(c, "ubi_is_mapped failed for LEB %d, error %d",
191 lnum, err);
192 dump_stack();
193 }
194 return err;
195}
196
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * This file is part of UBIFS.
4 *
5 * Copyright (C) 2006-2008 Nokia Corporation.
6 * Copyright (C) 2006, 2007 University of Szeged, Hungary
7 *
8 * Authors: Artem Bityutskiy (Битюцкий Артём)

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189 if (err < 0) {
190 ubifs_err(c, "ubi_is_mapped failed for LEB %d, error %d",
191 lnum, err);
192 dump_stack();
193 }
194 return err;
195}
196
197static void record_magic_error(struct ubifs_stats_info *stats)
198{
199 if (stats)
200 stats->magic_errors++;
201}
202
203static void record_node_error(struct ubifs_stats_info *stats)
204{
205 if (stats)
206 stats->node_errors++;
207}
208
209static void record_crc_error(struct ubifs_stats_info *stats)
210{
211 if (stats)
212 stats->crc_errors++;
213}
214
197/**
198 * ubifs_check_node - check node.
199 * @c: UBIFS file-system description object
200 * @buf: node to check
201 * @len: node length
202 * @lnum: logical eraseblock number
203 * @offs: offset within the logical eraseblock
204 * @quiet: print no messages

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233 ubifs_assert(c, lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
234 ubifs_assert(c, !(offs & 7) && offs < c->leb_size);
235
236 magic = le32_to_cpu(ch->magic);
237 if (magic != UBIFS_NODE_MAGIC) {
238 if (!quiet)
239 ubifs_err(c, "bad magic %#08x, expected %#08x",
240 magic, UBIFS_NODE_MAGIC);
215/**
216 * ubifs_check_node - check node.
217 * @c: UBIFS file-system description object
218 * @buf: node to check
219 * @len: node length
220 * @lnum: logical eraseblock number
221 * @offs: offset within the logical eraseblock
222 * @quiet: print no messages

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251 ubifs_assert(c, lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
252 ubifs_assert(c, !(offs & 7) && offs < c->leb_size);
253
254 magic = le32_to_cpu(ch->magic);
255 if (magic != UBIFS_NODE_MAGIC) {
256 if (!quiet)
257 ubifs_err(c, "bad magic %#08x, expected %#08x",
258 magic, UBIFS_NODE_MAGIC);
259 record_magic_error(c->stats);
241 err = -EUCLEAN;
242 goto out;
243 }
244
245 type = ch->node_type;
246 if (type < 0 || type >= UBIFS_NODE_TYPES_CNT) {
247 if (!quiet)
248 ubifs_err(c, "bad node type %d", type);
260 err = -EUCLEAN;
261 goto out;
262 }
263
264 type = ch->node_type;
265 if (type < 0 || type >= UBIFS_NODE_TYPES_CNT) {
266 if (!quiet)
267 ubifs_err(c, "bad node type %d", type);
268 record_node_error(c->stats);
249 goto out;
250 }
251
252 node_len = le32_to_cpu(ch->len);
253 if (node_len + offs > c->leb_size)
254 goto out_len;
255
256 if (c->ranges[type].max_len == 0) {

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265 return 0;
266
267 crc = crc32(UBIFS_CRC32_INIT, buf + 8, node_len - 8);
268 node_crc = le32_to_cpu(ch->crc);
269 if (crc != node_crc) {
270 if (!quiet)
271 ubifs_err(c, "bad CRC: calculated %#08x, read %#08x",
272 crc, node_crc);
269 goto out;
270 }
271
272 node_len = le32_to_cpu(ch->len);
273 if (node_len + offs > c->leb_size)
274 goto out_len;
275
276 if (c->ranges[type].max_len == 0) {

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285 return 0;
286
287 crc = crc32(UBIFS_CRC32_INIT, buf + 8, node_len - 8);
288 node_crc = le32_to_cpu(ch->crc);
289 if (crc != node_crc) {
290 if (!quiet)
291 ubifs_err(c, "bad CRC: calculated %#08x, read %#08x",
292 crc, node_crc);
293 record_crc_error(c->stats);
273 err = -EUCLEAN;
274 goto out;
275 }
276
277 return 0;
278
279out_len:
280 if (!quiet)

--- 941 unchanged lines hidden --- 		294 err = -EUCLEAN;
295 goto out;
296 }
297
298 return 0;
299
300out_len:
301 if (!quiet)

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