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Diffstat (limited to 'qemu/roms/u-boot/fs/ubifs/ubifs.c')
-rw-r--r--qemu/roms/u-boot/fs/ubifs/ubifs.c751
1 files changed, 0 insertions, 751 deletions
diff --git a/qemu/roms/u-boot/fs/ubifs/ubifs.c b/qemu/roms/u-boot/fs/ubifs/ubifs.c
deleted file mode 100644
index 273c0a963..000000000
--- a/qemu/roms/u-boot/fs/ubifs/ubifs.c
+++ /dev/null
@@ -1,751 +0,0 @@
-/*
- * This file is part of UBIFS.
- *
- * Copyright (C) 2006-2008 Nokia Corporation.
- *
- * (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
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Authors: Artem Bityutskiy (Битюцкий Артём)
- * Adrian Hunter
- */
-
-#include "ubifs.h"
-#include <u-boot/zlib.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* compress.c */
-
-/*
- * We need a wrapper for zunzip() because the parameters are
- * incompatible with the lzo decompressor.
- */
-static int gzip_decompress(const unsigned char *in, size_t in_len,
- unsigned char *out, size_t *out_len)
-{
- return zunzip(out, *out_len, (unsigned char *)in,
- (unsigned long *)out_len, 0, 0);
-}
-
-/* Fake description object for the "none" compressor */
-static struct ubifs_compressor none_compr = {
- .compr_type = UBIFS_COMPR_NONE,
- .name = "no compression",
- .capi_name = "",
- .decompress = NULL,
-};
-
-static struct ubifs_compressor lzo_compr = {
- .compr_type = UBIFS_COMPR_LZO,
- .name = "LZO",
- .capi_name = "lzo",
- .decompress = lzo1x_decompress_safe,
-};
-
-static struct ubifs_compressor zlib_compr = {
- .compr_type = UBIFS_COMPR_ZLIB,
- .name = "zlib",
- .capi_name = "deflate",
- .decompress = gzip_decompress,
-};
-
-/* All UBIFS compressors */
-struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
-
-/**
- * ubifs_decompress - decompress data.
- * @in_buf: data to decompress
- * @in_len: length of the data to decompress
- * @out_buf: output buffer where decompressed data should
- * @out_len: output length is returned here
- * @compr_type: type of compression
- *
- * This function decompresses data from buffer @in_buf into buffer @out_buf.
- * The length of the uncompressed data is returned in @out_len. This functions
- * returns %0 on success or a negative error code on failure.
- */
-int ubifs_decompress(const void *in_buf, int in_len, void *out_buf,
- int *out_len, int compr_type)
-{
- int err;
- struct ubifs_compressor *compr;
-
- if (unlikely(compr_type < 0 || compr_type >= UBIFS_COMPR_TYPES_CNT)) {
- ubifs_err("invalid compression type %d", compr_type);
- return -EINVAL;
- }
-
- compr = ubifs_compressors[compr_type];
-
- if (unlikely(!compr->capi_name)) {
- ubifs_err("%s compression is not compiled in", compr->name);
- return -EINVAL;
- }
-
- if (compr_type == UBIFS_COMPR_NONE) {
- memcpy(out_buf, in_buf, in_len);
- *out_len = in_len;
- return 0;
- }
-
- err = compr->decompress(in_buf, in_len, out_buf, (size_t *)out_len);
- if (err)
- ubifs_err("cannot decompress %d bytes, compressor %s, "
- "error %d", in_len, compr->name, err);
-
- return err;
-}
-
-/**
- * compr_init - initialize a compressor.
- * @compr: compressor description object
- *
- * This function initializes the requested compressor and returns zero in case
- * of success or a negative error code in case of failure.
- */
-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;
-}
-
-/**
- * ubifs_compressors_init - initialize UBIFS compressors.
- *
- * This function initializes the compressor which were compiled in. Returns
- * zero in case of success and a negative error code in case of failure.
- */
-int __init ubifs_compressors_init(void)
-{
- int err;
-
- err = compr_init(&lzo_compr);
- if (err)
- return err;
-
- err = compr_init(&zlib_compr);
- if (err)
- return err;
-
- err = compr_init(&none_compr);
- if (err)
- return err;
-
- return 0;
-}
-
-/*
- * ubifsls...
- */
-
-static int filldir(struct ubifs_info *c, const char *name, int namlen,
- u64 ino, unsigned int d_type)
-{
- struct inode *inode;
- char filetime[32];
-
- switch (d_type) {
- case UBIFS_ITYPE_REG:
- printf("\t");
- break;
- case UBIFS_ITYPE_DIR:
- printf("<DIR>\t");
- break;
- case UBIFS_ITYPE_LNK:
- printf("<LNK>\t");
- break;
- default:
- printf("other\t");
- break;
- }
-
- inode = ubifs_iget(c->vfs_sb, ino);
- if (IS_ERR(inode)) {
- printf("%s: Error in ubifs_iget(), ino=%lld ret=%p!\n",
- __func__, ino, inode);
- return -1;
- }
- ctime_r((time_t *)&inode->i_mtime, filetime);
- printf("%9lld %24.24s ", inode->i_size, filetime);
- ubifs_iput(inode);
-
- printf("%s\n", name);
-
- return 0;
-}
-
-static int ubifs_printdir(struct file *file, void *dirent)
-{
- int err, over = 0;
- struct qstr nm;
- union ubifs_key key;
- struct ubifs_dent_node *dent;
- struct inode *dir = file->f_path.dentry->d_inode;
- struct ubifs_info *c = dir->i_sb->s_fs_info;
-
- dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, file->f_pos);
-
- if (file->f_pos > UBIFS_S_KEY_HASH_MASK || file->f_pos == 2)
- /*
- * The directory was seek'ed to a senseless position or there
- * are no more entries.
- */
- return 0;
-
- if (file->f_pos == 1) {
- /* Find the first entry in TNC and save it */
- lowest_dent_key(c, &key, dir->i_ino);
- nm.name = NULL;
- dent = ubifs_tnc_next_ent(c, &key, &nm);
- if (IS_ERR(dent)) {
- err = PTR_ERR(dent);
- goto out;
- }
-
- file->f_pos = key_hash_flash(c, &dent->key);
- file->private_data = dent;
- }
-
- dent = file->private_data;
- if (!dent) {
- /*
- * The directory was seek'ed to and is now readdir'ed.
- * Find the entry corresponding to @file->f_pos or the
- * closest one.
- */
- dent_key_init_hash(c, &key, dir->i_ino, file->f_pos);
- nm.name = NULL;
- dent = ubifs_tnc_next_ent(c, &key, &nm);
- if (IS_ERR(dent)) {
- err = PTR_ERR(dent);
- goto out;
- }
- file->f_pos = key_hash_flash(c, &dent->key);
- file->private_data = dent;
- }
-
- while (1) {
- dbg_gen("feed '%s', ino %llu, new f_pos %#x",
- dent->name, (unsigned long long)le64_to_cpu(dent->inum),
- key_hash_flash(c, &dent->key));
- ubifs_assert(le64_to_cpu(dent->ch.sqnum) > ubifs_inode(dir)->creat_sqnum);
-
- nm.len = le16_to_cpu(dent->nlen);
- over = filldir(c, (char *)dent->name, nm.len,
- le64_to_cpu(dent->inum), dent->type);
- if (over)
- return 0;
-
- /* Switch to the next entry */
- key_read(c, &dent->key, &key);
- nm.name = (char *)dent->name;
- dent = ubifs_tnc_next_ent(c, &key, &nm);
- if (IS_ERR(dent)) {
- err = PTR_ERR(dent);
- goto out;
- }
-
- kfree(file->private_data);
- file->f_pos = key_hash_flash(c, &dent->key);
- file->private_data = dent;
- cond_resched();
- }
-
-out:
- if (err != -ENOENT) {
- ubifs_err("cannot find next direntry, error %d", err);
- return err;
- }
-
- kfree(file->private_data);
- file->private_data = NULL;
- file->f_pos = 2;
- return 0;
-}
-
-static int ubifs_finddir(struct super_block *sb, char *dirname,
- unsigned long root_inum, unsigned long *inum)
-{
- int err;
- struct qstr nm;
- union ubifs_key key;
- struct ubifs_dent_node *dent;
- struct ubifs_info *c;
- struct file *file;
- struct dentry *dentry;
- struct inode *dir;
- int ret = 0;
-
- file = kzalloc(sizeof(struct file), 0);
- dentry = kzalloc(sizeof(struct dentry), 0);
- dir = kzalloc(sizeof(struct inode), 0);
- if (!file || !dentry || !dir) {
- printf("%s: Error, no memory for malloc!\n", __func__);
- err = -ENOMEM;
- goto out;
- }
-
- dir->i_sb = sb;
- file->f_path.dentry = dentry;
- file->f_path.dentry->d_parent = dentry;
- file->f_path.dentry->d_inode = dir;
- file->f_path.dentry->d_inode->i_ino = root_inum;
- c = sb->s_fs_info;
-
- dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, file->f_pos);
-
- /* Find the first entry in TNC and save it */
- lowest_dent_key(c, &key, dir->i_ino);
- nm.name = NULL;
- dent = ubifs_tnc_next_ent(c, &key, &nm);
- if (IS_ERR(dent)) {
- err = PTR_ERR(dent);
- goto out;
- }
-
- file->f_pos = key_hash_flash(c, &dent->key);
- file->private_data = dent;
-
- while (1) {
- dbg_gen("feed '%s', ino %llu, new f_pos %#x",
- dent->name, (unsigned long long)le64_to_cpu(dent->inum),
- key_hash_flash(c, &dent->key));
- ubifs_assert(le64_to_cpu(dent->ch.sqnum) > ubifs_inode(dir)->creat_sqnum);
-
- nm.len = le16_to_cpu(dent->nlen);
- if ((strncmp(dirname, (char *)dent->name, nm.len) == 0) &&
- (strlen(dirname) == nm.len)) {
- *inum = le64_to_cpu(dent->inum);
- ret = 1;
- goto out_free;
- }
-
- /* Switch to the next entry */
- key_read(c, &dent->key, &key);
- nm.name = (char *)dent->name;
- dent = ubifs_tnc_next_ent(c, &key, &nm);
- if (IS_ERR(dent)) {
- err = PTR_ERR(dent);
- goto out;
- }
-
- kfree(file->private_data);
- file->f_pos = key_hash_flash(c, &dent->key);
- file->private_data = dent;
- cond_resched();
- }
-
-out:
- if (err != -ENOENT)
- ubifs_err("cannot find next direntry, error %d", err);
-
-out_free:
- if (file->private_data)
- kfree(file->private_data);
- if (file)
- free(file);
- if (dentry)
- free(dentry);
- if (dir)
- free(dir);
-
- return ret;
-}
-
-static unsigned long ubifs_findfile(struct super_block *sb, char *filename)
-{
- int ret;
- char *next;
- char fpath[128];
- char symlinkpath[128];
- char *name = fpath;
- unsigned long root_inum = 1;
- unsigned long inum;
- int symlink_count = 0; /* Don't allow symlink recursion */
- char link_name[64];
-
- strcpy(fpath, filename);
-
- /* Remove all leading slashes */
- while (*name == '/')
- name++;
-
- /*
- * Handle root-direcoty ('/')
- */
- inum = root_inum;
- if (!name || *name == '\0')
- return inum;
-
- for (;;) {
- struct inode *inode;
- struct ubifs_inode *ui;
-
- /* Extract the actual part from the pathname. */
- next = strchr(name, '/');
- if (next) {
- /* Remove all leading slashes. */
- while (*next == '/')
- *(next++) = '\0';
- }
-
- ret = ubifs_finddir(sb, name, root_inum, &inum);
- if (!ret)
- return 0;
- inode = ubifs_iget(sb, inum);
-
- if (!inode)
- return 0;
- ui = ubifs_inode(inode);
-
- if ((inode->i_mode & S_IFMT) == S_IFLNK) {
- char buf[128];
-
- /* We have some sort of symlink recursion, bail out */
- if (symlink_count++ > 8) {
- printf("Symlink recursion, aborting\n");
- return 0;
- }
- memcpy(link_name, ui->data, ui->data_len);
- link_name[ui->data_len] = '\0';
-
- if (link_name[0] == '/') {
- /* Absolute path, redo everything without
- * the leading slash */
- next = name = link_name + 1;
- root_inum = 1;
- continue;
- }
- /* Relative to cur dir */
- sprintf(buf, "%s/%s",
- link_name, next == NULL ? "" : next);
- memcpy(symlinkpath, buf, sizeof(buf));
- next = name = symlinkpath;
- continue;
- }
-
- /*
- * Check if directory with this name exists
- */
-
- /* Found the node! */
- if (!next || *next == '\0')
- return inum;
-
- root_inum = inum;
- name = next;
- }
-
- return 0;
-}
-
-int ubifs_ls(char *filename)
-{
- struct ubifs_info *c = ubifs_sb->s_fs_info;
- struct file *file;
- struct dentry *dentry;
- struct inode *dir;
- void *dirent = NULL;
- unsigned long inum;
- int ret = 0;
-
- c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READONLY);
- inum = ubifs_findfile(ubifs_sb, filename);
- if (!inum) {
- ret = -1;
- goto out;
- }
-
- file = kzalloc(sizeof(struct file), 0);
- dentry = kzalloc(sizeof(struct dentry), 0);
- dir = kzalloc(sizeof(struct inode), 0);
- if (!file || !dentry || !dir) {
- printf("%s: Error, no memory for malloc!\n", __func__);
- ret = -ENOMEM;
- goto out_mem;
- }
-
- dir->i_sb = ubifs_sb;
- file->f_path.dentry = dentry;
- file->f_path.dentry->d_parent = dentry;
- file->f_path.dentry->d_inode = dir;
- file->f_path.dentry->d_inode->i_ino = inum;
- file->f_pos = 1;
- file->private_data = NULL;
- ubifs_printdir(file, dirent);
-
-out_mem:
- if (file)
- free(file);
- if (dentry)
- free(dentry);
- if (dir)
- free(dir);
-
-out:
- ubi_close_volume(c->ubi);
- return ret;
-}
-
-/*
- * ubifsload...
- */
-
-/* file.c */
-
-static inline void *kmap(struct page *page)
-{
- return page->addr;
-}
-
-static int read_block(struct inode *inode, void *addr, unsigned int block,
- struct ubifs_data_node *dn)
-{
- struct ubifs_info *c = inode->i_sb->s_fs_info;
- int err, len, out_len;
- union ubifs_key key;
- unsigned int dlen;
-
- data_key_init(c, &key, inode->i_ino, block);
- err = ubifs_tnc_lookup(c, &key, dn);
- if (err) {
- if (err == -ENOENT)
- /* Not found, so it must be a hole */
- memset(addr, 0, UBIFS_BLOCK_SIZE);
- return err;
- }
-
- ubifs_assert(le64_to_cpu(dn->ch.sqnum) > ubifs_inode(inode)->creat_sqnum);
-
- len = le32_to_cpu(dn->size);
- if (len <= 0 || len > UBIFS_BLOCK_SIZE)
- goto dump;
-
- dlen = le32_to_cpu(dn->ch.len) - UBIFS_DATA_NODE_SZ;
- out_len = UBIFS_BLOCK_SIZE;
- err = ubifs_decompress(&dn->data, dlen, addr, &out_len,
- le16_to_cpu(dn->compr_type));
- if (err || len != out_len)
- goto dump;
-
- /*
- * Data length can be less than a full block, even for blocks that are
- * not the last in the file (e.g., as a result of making a hole and
- * appending data). Ensure that the remainder is zeroed out.
- */
- if (len < UBIFS_BLOCK_SIZE)
- memset(addr + len, 0, UBIFS_BLOCK_SIZE - len);
-
- return 0;
-
-dump:
- ubifs_err("bad data node (block %u, inode %lu)",
- block, inode->i_ino);
- dbg_dump_node(c, dn);
- return -EINVAL;
-}
-
-static int do_readpage(struct ubifs_info *c, struct inode *inode,
- struct page *page, int last_block_size)
-{
- void *addr;
- int err = 0, i;
- unsigned int block, beyond;
- struct ubifs_data_node *dn;
- loff_t i_size = inode->i_size;
-
- dbg_gen("ino %lu, pg %lu, i_size %lld",
- inode->i_ino, page->index, i_size);
-
- addr = kmap(page);
-
- block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT;
- beyond = (i_size + UBIFS_BLOCK_SIZE - 1) >> UBIFS_BLOCK_SHIFT;
- if (block >= beyond) {
- /* Reading beyond inode */
- memset(addr, 0, PAGE_CACHE_SIZE);
- goto out;
- }
-
- dn = kmalloc(UBIFS_MAX_DATA_NODE_SZ, GFP_NOFS);
- if (!dn)
- return -ENOMEM;
-
- i = 0;
- while (1) {
- int ret;
-
- if (block >= beyond) {
- /* Reading beyond inode */
- err = -ENOENT;
- memset(addr, 0, UBIFS_BLOCK_SIZE);
- } else {
- /*
- * 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;
- }
-
- /* 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)
- break;
- block += 1;
- addr += UBIFS_BLOCK_SIZE;
- }
- if (err) {
- if (err == -ENOENT) {
- /* Not found, so it must be a hole */
- dbg_gen("hole");
- goto out_free;
- }
- ubifs_err("cannot read page %lu of inode %lu, error %d",
- page->index, inode->i_ino, err);
- goto error;
- }
-
-out_free:
- kfree(dn);
-out:
- return 0;
-
-error:
- kfree(dn);
- return err;
-}
-
-int ubifs_load(char *filename, u32 addr, u32 size)
-{
- struct ubifs_info *c = ubifs_sb->s_fs_info;
- unsigned long inum;
- struct inode *inode;
- struct page page;
- int err = 0;
- int i;
- int count;
- int last_block_size = 0;
-
- 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
- * the real file here */
- inum = ubifs_findfile(ubifs_sb, filename);
- if (!inum) {
- err = -1;
- goto out;
- }
-
- /*
- * Read file inode
- */
- inode = ubifs_iget(ubifs_sb, inum);
- if (IS_ERR(inode)) {
- printf("%s: Error reading inode %ld!\n", __func__, inum);
- err = PTR_ERR(inode);
- goto out;
- }
-
- /*
- * If no size was specified or if size bigger than filesize
- * set size to filesize
- */
- if ((size == 0) || (size > inode->i_size))
- size = inode->i_size;
-
- count = (size + UBIFS_BLOCK_SIZE - 1) >> UBIFS_BLOCK_SHIFT;
- printf("Loading file '%s' to addr 0x%08x with size %d (0x%08x)...\n",
- filename, addr, size, size);
-
- page.addr = (void *)addr;
- page.index = 0;
- page.inode = inode;
- for (i = 0; i < count; i++) {
- /*
- * 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;
-
- page.addr += PAGE_SIZE;
- page.index++;
- }
-
- if (err)
- printf("Error reading file '%s'\n", filename);
- else {
- setenv_hex("filesize", size);
- printf("Done\n");
- }
-
- ubifs_iput(inode);
-
-out:
- ubi_close_volume(c->ubi);
- return err;
-}