*
* Copyright (C) 2006-2008 Nokia Corporation.
*
- * (C) Copyright 2008-2009
+ * (C) Copyright 2008-2010
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* This program is free software; you can redistribute it and/or modify it
#include "ubifs.h"
#include <u-boot/zlib.h>
-#if !defined(CONFIG_SYS_64BIT_VSPRINTF)
-#warning Please define CONFIG_SYS_64BIT_VSPRINTF for correct output!
-#endif
-
DECLARE_GLOBAL_DATA_PTR;
/* compress.c */
static int gzip_decompress(const unsigned char *in, size_t in_len,
unsigned char *out, size_t *out_len)
{
- unsigned long len = in_len;
- return zunzip(out, *out_len, (unsigned char *)in, &len, 0, 0);
+ return zunzip(out, *out_len, (unsigned char *)in,
+ (unsigned long *)out_len, 0, 0);
}
/* Fake description object for the "none" compressor */
static int __init compr_init(struct ubifs_compressor *compr)
{
ubifs_compressors[compr->compr_type] = compr;
+
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
ubifs_compressors[compr->compr_type]->name += gd->reloc_off;
ubifs_compressors[compr->compr_type]->capi_name += gd->reloc_off;
ubifs_compressors[compr->compr_type]->decompress += gd->reloc_off;
+#endif
+
return 0;
}
struct file *file;
struct dentry *dentry;
struct inode *dir;
+ int ret = 0;
file = kzalloc(sizeof(struct file), 0);
dentry = kzalloc(sizeof(struct dentry), 0);
if ((strncmp(dirname, (char *)dent->name, nm.len) == 0) &&
(strlen(dirname) == nm.len)) {
*inum = le64_to_cpu(dent->inum);
- return 1;
+ ret = 1;
+ goto out_free;
}
/* Switch to the next entry */
}
out:
- if (err != -ENOENT) {
+ if (err != -ENOENT)
ubifs_err("cannot find next direntry, error %d", err);
- return err;
- }
+out_free:
+ if (file->private_data)
+ kfree(file->private_data);
if (file)
free(file);
if (dentry)
if (dir)
free(dir);
- if (file->private_data)
- kfree(file->private_data);
- file->private_data = NULL;
- file->f_pos = 2;
- return 0;
+ return ret;
}
static unsigned long ubifs_findfile(struct super_block *sb, char *filename)
unsigned long root_inum = 1;
unsigned long inum;
int symlink_count = 0; /* Don't allow symlink recursion */
+ char link_name[64];
strcpy(fpath, filename);
ui = ubifs_inode(inode);
if ((inode->i_mode & S_IFMT) == S_IFLNK) {
- char link_name[64];
char buf[128];
/* We have some sort of symlink recursion, bail out */
continue;
}
/* Relative to cur dir */
- sprintf(buf, "%s%s",
+ sprintf(buf, "%s/%s",
link_name, next == NULL ? "" : next);
memcpy(symlinkpath, buf, sizeof(buf));
next = name = symlinkpath;
return -EINVAL;
}
-static int do_readpage(struct ubifs_info *c, struct inode *inode, struct page *page)
+static int do_readpage(struct ubifs_info *c, struct inode *inode,
+ struct page *page, int last_block_size)
{
void *addr;
int err = 0, i;
err = -ENOENT;
memset(addr, 0, UBIFS_BLOCK_SIZE);
} else {
- ret = read_block(inode, addr, block, dn);
- if (ret) {
- err = ret;
- if (err != -ENOENT)
+ /*
+ * Reading last block? Make sure to not write beyond
+ * the requested size in the destination buffer.
+ */
+ if (((block + 1) == beyond) || last_block_size) {
+ void *buff;
+ int dlen;
+
+ /*
+ * We need to buffer the data locally for the
+ * last block. This is to not pad the
+ * destination area to a multiple of
+ * UBIFS_BLOCK_SIZE.
+ */
+ buff = malloc(UBIFS_BLOCK_SIZE);
+ if (!buff) {
+ printf("%s: Error, malloc fails!\n",
+ __func__);
+ err = -ENOMEM;
break;
- } else if (block + 1 == beyond) {
- int dlen = le32_to_cpu(dn->size);
- int ilen = i_size & (UBIFS_BLOCK_SIZE - 1);
-
- if (ilen && ilen < dlen)
- memset(addr + ilen, 0, dlen - ilen);
+ }
+
+ /* Read block-size into temp buffer */
+ ret = read_block(inode, buff, block, dn);
+ if (ret) {
+ err = ret;
+ if (err != -ENOENT) {
+ free(buff);
+ break;
+ }
+ }
+
+ if (last_block_size)
+ dlen = last_block_size;
+ else
+ dlen = le32_to_cpu(dn->size);
+
+ /* Now copy required size back to dest */
+ memcpy(addr, buff, dlen);
+
+ free(buff);
+ } else {
+ ret = read_block(inode, addr, block, dn);
+ if (ret) {
+ err = ret;
+ if (err != -ENOENT)
+ break;
+ }
}
}
if (++i >= UBIFS_BLOCKS_PER_PAGE)
int err = 0;
int i;
int count;
+ int last_block_size = 0;
+ char buf [10];
c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READONLY);
/* ubifs_findfile will resolve symlinks, so we know that we get
page.index = 0;
page.inode = inode;
for (i = 0; i < count; i++) {
- err = do_readpage(c, inode, &page);
+ /*
+ * Make sure to not read beyond the requested size
+ */
+ if (((i + 1) == count) && (size < inode->i_size))
+ last_block_size = size - (i * PAGE_SIZE);
+
+ err = do_readpage(c, inode, &page, last_block_size);
if (err)
break;
if (err)
printf("Error reading file '%s'\n", filename);
- else
+ else {
+ sprintf(buf, "%X", size);
+ setenv("filesize", buf);
printf("Done\n");
+ }
ubifs_iput(inode);