/*
* JFFS2 -- Journalling Flash File System, Version 2.
*
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
*
* Created by David Woodhouse <dwmw2@infradead.org>
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: scan.c,v 1.125 2005/09/30 13:59:13 dedekind Exp $
- *
*/
+
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/slab.h>
if (!ret && pointlen < c->mtd->size) {
/* Don't muck about if it won't let us point to the whole flash */
D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", pointlen));
- c->mtd->unpoint(c->mtd, flashbuf, 0, c->mtd->size);
+ c->mtd->unpoint(c->mtd, flashbuf, 0, pointlen);
flashbuf = NULL;
}
if (ret)
ofs += 4;
continue;
}
- /* Due to poor choice of crc32 seed, an all-zero node will have a correct CRC */
- if (!je32_to_cpu(node->hdr_crc) && !je16_to_cpu(node->nodetype) &&
- !je16_to_cpu(node->magic) && !je32_to_cpu(node->totlen)) {
- noisy_printk(&noise, "jffs2_scan_eraseblock(): All zero node header at 0x%08x.\n", ofs);
- if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
- return err;
- ofs += 4;
- continue;
- }
- if (ofs + je32_to_cpu(node->totlen) >
- jeb->offset + c->sector_size) {
+ if (ofs + je32_to_cpu(node->totlen) > jeb->offset + c->sector_size) {
/* Eep. Node goes over the end of the erase block. */
printk(KERN_WARNING "Node at 0x%08x with length 0x%08x would run over the end of the erase block\n",
ofs, je32_to_cpu(node->totlen));
switch (je16_to_cpu(node->nodetype) & JFFS2_COMPAT_MASK) {
case JFFS2_FEATURE_ROCOMPAT:
printk(KERN_NOTICE "Read-only compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs);
- c->flags |= JFFS2_SB_FLAG_RO;
+ c->flags |= JFFS2_SB_FLAG_RO;
if (!(jffs2_is_readonly(c)))
return -EROFS;
if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
{
struct jffs2_full_dirent *fd;
struct jffs2_inode_cache *ic;
+ uint32_t checkedlen;
uint32_t crc;
int err;
pseudo_random += je32_to_cpu(rd->version);
- fd = jffs2_alloc_full_dirent(rd->nsize+1);
+ /* Should never happen. Did. (OLPC trac #4184)*/
+ checkedlen = strnlen(rd->name, rd->nsize);
+ if (checkedlen < rd->nsize) {
+ printk(KERN_ERR "Dirent at %08x has zeroes in name. Truncating to %d chars\n",
+ ofs, checkedlen);
+ }
+ fd = jffs2_alloc_full_dirent(checkedlen+1);
if (!fd) {
return -ENOMEM;
}
- memcpy(&fd->name, rd->name, rd->nsize);
- fd->name[rd->nsize] = 0;
+ memcpy(&fd->name, rd->name, checkedlen);
+ fd->name[checkedlen] = 0;
crc = crc32(0, fd->name, rd->nsize);
if (crc != je32_to_cpu(rd->name_crc)) {
return -ENOMEM;
}
- fd->raw = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rd->totlen)), ic);
+ fd->raw = jffs2_link_node_ref(c, jeb, ofs | dirent_node_state(rd),
+ PAD(je32_to_cpu(rd->totlen)), ic);
fd->next = NULL;
fd->version = je32_to_cpu(rd->version);
fd->ino = je32_to_cpu(rd->ino);
- fd->nhash = full_name_hash(fd->name, rd->nsize);
+ fd->nhash = full_name_hash(fd->name, checkedlen);
fd->type = rd->type;
jffs2_add_fd_to_list(c, fd, &ic->scan_dents);