*
* ext4write : Based on generic ext4 protocol.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <ext_common.h>
#include <ext4fs.h>
+#include <inttypes.h>
#include <malloc.h>
+#include <memalign.h>
#include <stddef.h>
#include <linux/stat.h>
#include <linux/time.h>
struct ext2_data *ext4fs_root;
struct ext2fs_node *ext4fs_file;
-uint32_t *ext4fs_indir1_block;
+__le32 *ext4fs_indir1_block;
int ext4fs_indir1_size;
int ext4fs_indir1_blkno = -1;
-uint32_t *ext4fs_indir2_block;
+__le32 *ext4fs_indir2_block;
int ext4fs_indir2_size;
int ext4fs_indir2_blkno = -1;
-uint32_t *ext4fs_indir3_block;
+__le32 *ext4fs_indir3_block;
int ext4fs_indir3_size;
int ext4fs_indir3_blkno = -1;
struct ext2_inode *g_parent_inode;
static int symlinknest;
#if defined(CONFIG_EXT4_WRITE)
+static inline void ext4fs_sb_free_inodes_dec(struct ext2_sblock *sb)
+{
+ sb->free_inodes = cpu_to_le32(le32_to_cpu(sb->free_inodes) - 1);
+}
+
+static inline void ext4fs_sb_free_blocks_dec(struct ext2_sblock *sb)
+{
+ sb->free_blocks = cpu_to_le32(le32_to_cpu(sb->free_blocks) - 1);
+}
+
+static inline void ext4fs_bg_free_inodes_dec(struct ext2_block_group *bg)
+{
+ bg->free_inodes = cpu_to_le16(le16_to_cpu(bg->free_inodes) - 1);
+}
+
+static inline void ext4fs_bg_free_blocks_dec(struct ext2_block_group *bg)
+{
+ bg->free_blocks = cpu_to_le16(le16_to_cpu(bg->free_blocks) - 1);
+}
+
+static inline void ext4fs_bg_itable_unused_dec(struct ext2_block_group *bg)
+{
+ bg->bg_itable_unused = cpu_to_le16(le16_to_cpu(bg->bg_itable_unused) - 1);
+}
+
uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n)
{
uint32_t res = size / n;
if ((startblock + (size >> log2blksz)) >
(part_offset + fs->total_sect)) {
- printf("part_offset is %lu\n", part_offset);
- printf("total_sector is %llu\n", fs->total_sect);
+ printf("part_offset is " LBAFU "\n", part_offset);
+ printf("total_sector is %" PRIu64 "\n", fs->total_sect);
printf("error: overflow occurs\n");
return;
}
if (remainder) {
- if (fs->dev_desc->block_read) {
- fs->dev_desc->block_read(fs->dev_desc->dev,
- startblock, 1, sec_buf);
- temp_ptr = sec_buf;
- memcpy((temp_ptr + remainder),
- (unsigned char *)buf, size);
- fs->dev_desc->block_write(fs->dev_desc->dev,
- startblock, 1, sec_buf);
- }
+ blk_dread(fs->dev_desc, startblock, 1, sec_buf);
+ temp_ptr = sec_buf;
+ memcpy((temp_ptr + remainder), (unsigned char *)buf, size);
+ blk_dwrite(fs->dev_desc, startblock, 1, sec_buf);
} else {
if (size >> log2blksz != 0) {
- fs->dev_desc->block_write(fs->dev_desc->dev,
- startblock,
- size >> log2blksz,
- (unsigned long *)buf);
+ blk_dwrite(fs->dev_desc, startblock, size >> log2blksz,
+ (unsigned long *)buf);
} else {
- fs->dev_desc->block_read(fs->dev_desc->dev,
- startblock, 1, sec_buf);
+ blk_dread(fs->dev_desc, startblock, 1, sec_buf);
temp_ptr = sec_buf;
memcpy(temp_ptr, buf, size);
- fs->dev_desc->block_write(fs->dev_desc->dev,
- startblock, 1,
- (unsigned long *)sec_buf);
+ blk_dwrite(fs->dev_desc, startblock, 1,
+ (unsigned long *)sec_buf);
}
}
}
while (*ptr == 255) {
ptr++;
count += 8;
- if (count > ext4fs_root->sblock.inodes_per_group)
+ if (count > le32_to_cpu(ext4fs_root->sblock.inodes_per_group))
return -1;
}
unsigned char *ptr = buffer;
unsigned char operand;
- inode_no -= (index * ext4fs_root->sblock.inodes_per_group);
+ inode_no -= (index * le32_to_cpu(ext4fs_root->sblock.inodes_per_group));
i = inode_no / 8;
remainder = inode_no % 8;
if (remainder == 0) {
unsigned char *ptr = buffer;
unsigned char operand;
- inode_no -= (index * ext4fs_root->sblock.inodes_per_group);
+ inode_no -= (index * le32_to_cpu(ext4fs_root->sblock.inodes_per_group));
i = inode_no / 8;
remainder = inode_no % 8;
if (remainder == 0) {
*ptr = *ptr & ~(operand);
}
-int ext4fs_checksum_update(unsigned int i)
+uint16_t ext4fs_checksum_update(uint32_t i)
{
struct ext2_block_group *desc;
struct ext_filesystem *fs = get_fs();
- __u16 crc = 0;
+ uint16_t crc = 0;
+ __le32 le32_i = cpu_to_le32(i);
desc = (struct ext2_block_group *)&fs->bgd[i];
- if (fs->sb->feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
+ if (le32_to_cpu(fs->sb->feature_ro_compat) & EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
int offset = offsetof(struct ext2_block_group, bg_checksum);
crc = ext2fs_crc16(~0, fs->sb->unique_id,
sizeof(fs->sb->unique_id));
- crc = ext2fs_crc16(crc, &i, sizeof(i));
+ crc = ext2fs_crc16(crc, &le32_i, sizeof(le32_i));
crc = ext2fs_crc16(crc, desc, offset);
offset += sizeof(desc->bg_checksum); /* skip checksum */
assert(offset == sizeof(*desc));
dentry_length = sizeof(struct ext2_dirent) +
dir->namelen + padding_factor;
- sizeof_void_space = dir->direntlen - dentry_length;
+ sizeof_void_space = le16_to_cpu(dir->direntlen) - dentry_length;
if (sizeof_void_space == 0)
return 0;
new_entry_byte_reqd = strlen(filename) +
sizeof(struct ext2_dirent) + padding_factor;
if (sizeof_void_space >= new_entry_byte_reqd) {
- dir->direntlen = dentry_length;
+ dir->direntlen = cpu_to_le16(dentry_length);
return sizeof_void_space;
}
/* directory entry */
struct ext2_dirent *dir;
char *temp_dir = NULL;
+ uint32_t new_blk_no;
+ uint32_t new_size;
+ uint32_t new_blockcnt;
zero_buffer = zalloc(fs->blksz);
if (!zero_buffer) {
previous_blknr = root_blknr;
}
- status = ext4fs_devread(first_block_no_of_root
+ status = ext4fs_devread((lbaint_t)first_block_no_of_root
* fs->sect_perblk,
0, fs->blksz, root_first_block_buffer);
if (status == 0)
goto fail;
dir = (struct ext2_dirent *)root_first_block_buffer;
totalbytes = 0;
- while (dir->direntlen > 0) {
+ while (le16_to_cpu(dir->direntlen) > 0) {
/*
* blocksize-totalbytes because last directory length
* i.e. dir->direntlen is free availble space in the
*/
/* traversing the each directory entry */
- if (fs->blksz - totalbytes == dir->direntlen) {
+ if (fs->blksz - totalbytes == le16_to_cpu(dir->direntlen)) {
if (strlen(filename) % 4 != 0)
padding_factor = 4 - (strlen(filename) % 4);
printf("Directory exceeds limit\n");
goto fail;
}
- g_parent_inode->b.blocks.dir_blocks
- [direct_blk_idx] = ext4fs_get_new_blk_no();
- if (g_parent_inode->b.blocks.dir_blocks
- [direct_blk_idx] == -1) {
+ new_blk_no = ext4fs_get_new_blk_no();
+ if (new_blk_no == -1) {
printf("no block left to assign\n");
goto fail;
}
- put_ext4(((uint64_t)
- (g_parent_inode->b.
- blocks.dir_blocks[direct_blk_idx] *
- fs->blksz)), zero_buffer, fs->blksz);
- g_parent_inode->size =
- g_parent_inode->size + fs->blksz;
- g_parent_inode->blockcnt =
- g_parent_inode->blockcnt + fs->sect_perblk;
+ put_ext4((uint64_t)new_blk_no * fs->blksz, zero_buffer, fs->blksz);
+ g_parent_inode->b.blocks.dir_blocks[direct_blk_idx] =
+ cpu_to_le32(new_blk_no);
+
+ new_size = le32_to_cpu(g_parent_inode->size);
+ new_size += fs->blksz;
+ g_parent_inode->size = cpu_to_le32(new_size);
+
+ new_blockcnt = le32_to_cpu(g_parent_inode->blockcnt);
+ new_blockcnt += fs->sect_perblk;
+ g_parent_inode->blockcnt = cpu_to_le32(new_blockcnt);
+
if (ext4fs_put_metadata
(root_first_block_buffer,
first_block_no_of_root))
goto fail;
goto restart;
}
- dir->direntlen = last_entry_dirlen;
+ dir->direntlen = cpu_to_le16(last_entry_dirlen);
break;
}
- templength = dir->direntlen;
+ templength = le16_to_cpu(dir->direntlen);
totalbytes = totalbytes + templength;
sizeof_void_space = check_void_in_dentry(dir, filename);
if (sizeof_void_space)
}
/* make a pointer ready for creating next directory entry */
- templength = dir->direntlen;
+ templength = le16_to_cpu(dir->direntlen);
totalbytes = totalbytes + templength;
dir = (struct ext2_dirent *)((char *)dir + templength);
printf("no inode left to assign\n");
goto fail;
}
- dir->inode = inodeno;
+ dir->inode = cpu_to_le32(inodeno);
if (sizeof_void_space)
- dir->direntlen = sizeof_void_space;
+ dir->direntlen = cpu_to_le16(sizeof_void_space);
else
- dir->direntlen = fs->blksz - totalbytes;
+ dir->direntlen = cpu_to_le16(fs->blksz - totalbytes);
dir->namelen = strlen(filename);
dir->filetype = FILETYPE_REG; /* regular file */
if (!block_buffer)
goto fail;
- status = ext4fs_devread(blknr * fs->sect_perblk,
+ status = ext4fs_devread((lbaint_t)blknr * fs->sect_perblk,
0, fs->blksz, (char *)block_buffer);
if (status == 0)
goto fail;
dir = (struct ext2_dirent *)block_buffer;
ptr = (char *)dir;
totalbytes = 0;
- while (dir->direntlen >= 0) {
+ while (le16_to_cpu(dir->direntlen) >= 0) {
/*
* blocksize-totalbytes because last directory
* length i.e.,*dir->direntlen is free availble
* it is a last entry of directory entry
*/
if (strlen(dirname) == dir->namelen) {
- if (strncmp(dirname, ptr +
- sizeof(struct ext2_dirent),
- dir->namelen) == 0) {
- previous_dir->direntlen +=
- dir->direntlen;
- inodeno = dir->inode;
+ if (strncmp(dirname, ptr + sizeof(struct ext2_dirent), dir->namelen) == 0) {
+ uint16_t new_len;
+ new_len = le16_to_cpu(previous_dir->direntlen);
+ new_len += le16_to_cpu(dir->direntlen);
+ previous_dir->direntlen = cpu_to_le16(new_len);
+ inodeno = le32_to_cpu(dir->inode);
dir->inode = 0;
found = 1;
break;
}
}
- if (fs->blksz - totalbytes == dir->direntlen)
+ if (fs->blksz - totalbytes == le16_to_cpu(dir->direntlen))
break;
/* traversing the each directory entry */
- templength = dir->direntlen;
+ templength = le16_to_cpu(dir->direntlen);
totalbytes = totalbytes + templength;
previous_dir = dir;
dir = (struct ext2_dirent *)((char *)dir + templength);
arr[i] = zalloc(strlen("/") + 1);
if (!arr[i])
return -ENOMEM;
-
- arr[i++] = "/";
+ memcpy(arr[i++], "/", strlen("/"));
/* add each path entry after root */
while (token != NULL) {
if (matched_inode_no != -1) {
ext4fs_iget(matched_inode_no, &temp_inode);
- if (temp_inode.mode & S_IFDIR) {
+ if (le16_to_cpu(temp_inode.mode) & S_IFDIR) {
printf("It is a Directory\n");
result_inode_no = -1;
goto fail;
fail:
free(depth_dirname);
free(parse_dirname);
+ for (i = 0; i < depth; i++) {
+ if (!ptr[i])
+ break;
+ free(ptr[i]);
+ }
free(ptr);
free(parent_inode);
free(first_inode);
struct ext2_dirent *previous_dir = NULL;
char *ptr = NULL;
struct ext_filesystem *fs = get_fs();
+ int ret = -1;
/* get the first block of root */
first_block_no_of_root = blknr;
if (!root_first_block_buffer)
return -ENOMEM;
root_first_block_addr = root_first_block_buffer;
- status = ext4fs_devread(first_block_no_of_root *
+ status = ext4fs_devread((lbaint_t)first_block_no_of_root *
fs->sect_perblk, 0,
fs->blksz, root_first_block_buffer);
if (status == 0)
dir = (struct ext2_dirent *)root_first_block_buffer;
ptr = (char *)dir;
totalbytes = 0;
- while (dir->direntlen >= 0) {
+ while (le16_to_cpu(dir->direntlen) >= 0) {
/*
* blocksize-totalbytes because last
* directory length i.e., *dir->direntlen
if (strlen(filename) == dir->namelen) {
if (strncmp(filename, ptr + sizeof(struct ext2_dirent),
dir->namelen) == 0) {
+ uint16_t new_len;
printf("file found deleting\n");
- previous_dir->direntlen += dir->direntlen;
- inodeno = dir->inode;
+ new_len = le16_to_cpu(previous_dir->direntlen);
+ new_len += le16_to_cpu(dir->direntlen);
+ previous_dir->direntlen = cpu_to_le16(new_len);
+ inodeno = le32_to_cpu(dir->inode);
dir->inode = 0;
found = 1;
break;
}
}
- if (fs->blksz - totalbytes == dir->direntlen)
+ if (fs->blksz - totalbytes == le16_to_cpu(dir->direntlen))
break;
/* traversing the each directory entry */
- templength = dir->direntlen;
+ templength = le16_to_cpu(dir->direntlen);
totalbytes = totalbytes + templength;
previous_dir = dir;
dir = (struct ext2_dirent *)((char *)dir + templength);
if (ext4fs_put_metadata(root_first_block_addr,
first_block_no_of_root))
goto fail;
- return inodeno;
+ ret = inodeno;
}
fail:
free(root_first_block_buffer);
- return -1;
+ return ret;
}
int ext4fs_filename_check(char *filename)
return -1;
}
-long int ext4fs_get_new_blk_no(void)
+uint32_t ext4fs_get_new_blk_no(void)
{
short i;
short status;
int remainder;
unsigned int bg_idx;
static int prev_bg_bitmap_index = -1;
- unsigned int blk_per_grp = ext4fs_root->sblock.blocks_per_group;
+ unsigned int blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group);
struct ext_filesystem *fs = get_fs();
char *journal_buffer = zalloc(fs->blksz);
char *zero_buffer = zalloc(fs->blksz);
if (fs->first_pass_bbmap == 0) {
for (i = 0; i < fs->no_blkgrp; i++) {
- if (bgd[i].free_blocks) {
- if (bgd[i].bg_flags & EXT4_BG_BLOCK_UNINIT) {
- put_ext4(((uint64_t) (bgd[i].block_id *
- fs->blksz)),
+ if (le16_to_cpu(bgd[i].free_blocks)) {
+ if (le16_to_cpu(bgd[i].bg_flags) & EXT4_BG_BLOCK_UNINIT) {
+ uint16_t new_flags;
+ put_ext4((uint64_t)le32_to_cpu(bgd[i].block_id) * fs->blksz,
zero_buffer, fs->blksz);
- bgd[i].bg_flags =
- bgd[i].
- bg_flags & ~EXT4_BG_BLOCK_UNINIT;
+ new_flags = le16_to_cpu(bgd[i].bg_flags) & ~EXT4_BG_BLOCK_UNINIT;
+ bgd[i].bg_flags = cpu_to_le16(new_flags);
memcpy(fs->blk_bmaps[i], zero_buffer,
fs->blksz);
}
fs->curr_blkno = fs->curr_blkno +
(i * fs->blksz * 8);
fs->first_pass_bbmap++;
- bgd[i].free_blocks--;
- fs->sb->free_blocks--;
- status = ext4fs_devread(bgd[i].block_id *
+ ext4fs_bg_free_blocks_dec(&bgd[i]);
+ ext4fs_sb_free_blocks_dec(fs->sb);
+ status = ext4fs_devread(
+ (lbaint_t)le32_to_cpu(bgd[i].block_id) *
fs->sect_perblk, 0,
fs->blksz,
journal_buffer);
if (status == 0)
goto fail;
if (ext4fs_log_journal(journal_buffer,
- bgd[i].block_id))
+ le32_to_cpu(bgd[i].block_id)))
goto fail;
goto success;
} else {
restart:
fs->curr_blkno++;
/* get the blockbitmap index respective to blockno */
- if (fs->blksz != 1024) {
- bg_idx = fs->curr_blkno / blk_per_grp;
- } else {
- bg_idx = fs->curr_blkno / blk_per_grp;
+ bg_idx = fs->curr_blkno / blk_per_grp;
+ if (fs->blksz == 1024) {
remainder = fs->curr_blkno % blk_per_grp;
if (!remainder)
bg_idx--;
goto restart;
}
- if (bgd[bg_idx].bg_flags & EXT4_BG_BLOCK_UNINIT) {
+ if (le16_to_cpu(bgd[bg_idx].bg_flags) & EXT4_BG_BLOCK_UNINIT) {
+ uint16_t new_flags;
memset(zero_buffer, '\0', fs->blksz);
- put_ext4(((uint64_t) (bgd[bg_idx].block_id *
- fs->blksz)), zero_buffer, fs->blksz);
+ put_ext4((uint64_t)le32_to_cpu(bgd[bg_idx].block_id) * fs->blksz,
+ zero_buffer, fs->blksz);
memcpy(fs->blk_bmaps[bg_idx], zero_buffer, fs->blksz);
- bgd[bg_idx].bg_flags = bgd[bg_idx].bg_flags &
- ~EXT4_BG_BLOCK_UNINIT;
+ new_flags = le16_to_cpu(bgd[bg_idx].bg_flags) & ~EXT4_BG_BLOCK_UNINIT;
+ bgd[bg_idx].bg_flags = cpu_to_le16(new_flags);
}
if (ext4fs_set_block_bmap(fs->curr_blkno, fs->blk_bmaps[bg_idx],
/* journal backup */
if (prev_bg_bitmap_index != bg_idx) {
memset(journal_buffer, '\0', fs->blksz);
- status = ext4fs_devread(bgd[bg_idx].block_id
+ status = ext4fs_devread(
+ (lbaint_t)le32_to_cpu(bgd[bg_idx].block_id)
* fs->sect_perblk,
0, fs->blksz, journal_buffer);
if (status == 0)
goto fail;
if (ext4fs_log_journal(journal_buffer,
- bgd[bg_idx].block_id))
+ le32_to_cpu(bgd[bg_idx].block_id)))
goto fail;
prev_bg_bitmap_index = bg_idx;
}
- bgd[bg_idx].free_blocks--;
- fs->sb->free_blocks--;
+ ext4fs_bg_free_blocks_dec(&bgd[bg_idx]);
+ ext4fs_sb_free_blocks_dec(fs->sb);
goto success;
}
success:
short status;
unsigned int ibmap_idx;
static int prev_inode_bitmap_index = -1;
- unsigned int inodes_per_grp = ext4fs_root->sblock.inodes_per_group;
+ unsigned int inodes_per_grp = le32_to_cpu(ext4fs_root->sblock.inodes_per_group);
struct ext_filesystem *fs = get_fs();
char *journal_buffer = zalloc(fs->blksz);
char *zero_buffer = zalloc(fs->blksz);
bgd[i].free_inodes)
bgd[i].bg_itable_unused =
bgd[i].free_inodes;
- if (bgd[i].bg_flags & EXT4_BG_INODE_UNINIT) {
- put_ext4(((uint64_t)
- (bgd[i].inode_id *
- fs->blksz)),
+ if (le16_to_cpu(bgd[i].bg_flags) & EXT4_BG_INODE_UNINIT) {
+ int new_flags;
+ put_ext4((uint64_t)le32_to_cpu(bgd[i].inode_id) * fs->blksz,
zero_buffer, fs->blksz);
- bgd[i].bg_flags = bgd[i].bg_flags &
- ~EXT4_BG_INODE_UNINIT;
+ new_flags = le16_to_cpu(bgd[i].bg_flags) & ~EXT4_BG_INODE_UNINIT;
+ bgd[i].bg_flags = cpu_to_le16(new_flags);
memcpy(fs->inode_bmaps[i],
zero_buffer, fs->blksz);
}
fs->curr_inode_no = fs->curr_inode_no +
(i * inodes_per_grp);
fs->first_pass_ibmap++;
- bgd[i].free_inodes--;
- bgd[i].bg_itable_unused--;
- fs->sb->free_inodes--;
- status = ext4fs_devread(bgd[i].inode_id *
+ ext4fs_bg_free_inodes_dec(&bgd[i]);
+ ext4fs_bg_itable_unused_dec(&bgd[i]);
+ ext4fs_sb_free_inodes_dec(fs->sb);
+ status = ext4fs_devread(
+ (lbaint_t)le32_to_cpu(bgd[i].inode_id) *
fs->sect_perblk, 0,
fs->blksz,
journal_buffer);
if (status == 0)
goto fail;
if (ext4fs_log_journal(journal_buffer,
- bgd[i].inode_id))
+ le32_to_cpu(bgd[i].inode_id)))
goto fail;
goto success;
} else
fs->curr_inode_no++;
/* get the blockbitmap index respective to blockno */
ibmap_idx = fs->curr_inode_no / inodes_per_grp;
- if (bgd[ibmap_idx].bg_flags & EXT4_BG_INODE_UNINIT) {
+ if (le16_to_cpu(bgd[ibmap_idx].bg_flags) & EXT4_BG_INODE_UNINIT) {
+ int new_flags;
memset(zero_buffer, '\0', fs->blksz);
- put_ext4(((uint64_t) (bgd[ibmap_idx].inode_id *
- fs->blksz)), zero_buffer,
- fs->blksz);
- bgd[ibmap_idx].bg_flags =
- bgd[ibmap_idx].bg_flags & ~EXT4_BG_INODE_UNINIT;
+ put_ext4((uint64_t)le32_to_cpu(bgd[ibmap_idx].inode_id) * fs->blksz,
+ zero_buffer, fs->blksz);
+ new_flags = le16_to_cpu(bgd[ibmap_idx].bg_flags) & ~EXT4_BG_INODE_UNINIT;
+ bgd[ibmap_idx].bg_flags = cpu_to_le16(new_flags);
memcpy(fs->inode_bmaps[ibmap_idx], zero_buffer,
fs->blksz);
}
/* journal backup */
if (prev_inode_bitmap_index != ibmap_idx) {
memset(journal_buffer, '\0', fs->blksz);
- status = ext4fs_devread(bgd[ibmap_idx].inode_id
+ status = ext4fs_devread(
+ (lbaint_t)le32_to_cpu(bgd[ibmap_idx].inode_id)
* fs->sect_perblk,
0, fs->blksz, journal_buffer);
if (status == 0)
goto fail;
if (ext4fs_log_journal(journal_buffer,
- bgd[ibmap_idx].inode_id))
+ le32_to_cpu(bgd[ibmap_idx].inode_id)))
goto fail;
prev_inode_bitmap_index = ibmap_idx;
}
bgd[ibmap_idx].free_inodes)
bgd[ibmap_idx].bg_itable_unused =
bgd[ibmap_idx].free_inodes;
- bgd[ibmap_idx].free_inodes--;
- bgd[ibmap_idx].bg_itable_unused--;
- fs->sb->free_inodes--;
+ ext4fs_bg_free_inodes_dec(&bgd[ibmap_idx]);
+ ext4fs_bg_itable_unused_dec(&bgd[ibmap_idx]);
+ ext4fs_sb_free_inodes_dec(fs->sb);
goto success;
}
long int actual_block_no;
long int si_blockno;
/* si :single indirect */
- unsigned int *si_buffer = NULL;
- unsigned int *si_start_addr = NULL;
+ __le32 *si_buffer = NULL;
+ __le32 *si_start_addr = NULL;
struct ext_filesystem *fs = get_fs();
if (*total_remaining_blocks != 0) {
(*no_blks_reqd)++;
debug("SIPB %ld: %u\n", si_blockno, *total_remaining_blocks);
- status = ext4fs_devread(si_blockno * fs->sect_perblk,
+ status = ext4fs_devread((lbaint_t)si_blockno * fs->sect_perblk,
0, fs->blksz, (char *)si_buffer);
memset(si_buffer, '\0', fs->blksz);
if (status == 0)
printf("no block left to assign\n");
goto fail;
}
- *si_buffer = actual_block_no;
+ *si_buffer = cpu_to_le32(actual_block_no);
debug("SIAB %u: %u\n", *si_buffer,
*total_remaining_blocks);
}
/* write the block to disk */
- put_ext4(((uint64_t) (si_blockno * fs->blksz)),
+ put_ext4(((uint64_t) ((uint64_t)si_blockno * (uint64_t)fs->blksz)),
si_start_addr, fs->blksz);
- file_inode->b.blocks.indir_block = si_blockno;
+ file_inode->b.blocks.indir_block = cpu_to_le32(si_blockno);
}
fail:
free(si_start_addr);
/* di:double indirect */
long int di_blockno_parent;
long int di_blockno_child;
- unsigned int *di_parent_buffer = NULL;
- unsigned int *di_child_buff = NULL;
- unsigned int *di_block_start_addr = NULL;
- unsigned int *di_child_buff_start = NULL;
+ __le32 *di_parent_buffer = NULL;
+ __le32 *di_child_buff = NULL;
+ __le32 *di_block_start_addr = NULL;
+ __le32 *di_child_buff_start = NULL;
struct ext_filesystem *fs = get_fs();
if (*total_remaining_blocks != 0) {
debug("DIPB %ld: %u\n", di_blockno_parent,
*total_remaining_blocks);
- status = ext4fs_devread(di_blockno_parent *
+ status = ext4fs_devread((lbaint_t)di_blockno_parent *
fs->sect_perblk, 0,
fs->blksz, (char *)di_parent_buffer);
goto fail;
di_child_buff_start = di_child_buff;
- *di_parent_buffer = di_blockno_child;
+ *di_parent_buffer = cpu_to_le32(di_blockno_child);
di_parent_buffer++;
(*no_blks_reqd)++;
debug("DICB %ld: %u\n", di_blockno_child,
*total_remaining_blocks);
- status = ext4fs_devread(di_blockno_child *
+ status = ext4fs_devread((lbaint_t)di_blockno_child *
fs->sect_perblk, 0,
fs->blksz,
(char *)di_child_buff);
printf("no block left to assign\n");
goto fail;
}
- *di_child_buff = actual_block_no;
+ *di_child_buff = cpu_to_le32(actual_block_no);
debug("DIAB %ld: %u\n", actual_block_no,
*total_remaining_blocks);
break;
}
/* write the block table */
- put_ext4(((uint64_t) (di_blockno_child * fs->blksz)),
+ put_ext4(((uint64_t) ((uint64_t)di_blockno_child * (uint64_t)fs->blksz)),
di_child_buff_start, fs->blksz);
free(di_child_buff_start);
di_child_buff_start = NULL;
if (*total_remaining_blocks == 0)
break;
}
- put_ext4(((uint64_t) (di_blockno_parent * fs->blksz)),
+ put_ext4(((uint64_t) ((uint64_t)di_blockno_parent * (uint64_t)fs->blksz)),
di_block_start_addr, fs->blksz);
- file_inode->b.blocks.double_indir_block = di_blockno_parent;
+ file_inode->b.blocks.double_indir_block = cpu_to_le32(di_blockno_parent);
}
fail:
free(di_block_start_addr);
long int ti_gp_blockno;
long int ti_parent_blockno;
long int ti_child_blockno;
- unsigned int *ti_gp_buff = NULL;
- unsigned int *ti_parent_buff = NULL;
- unsigned int *ti_child_buff = NULL;
- unsigned int *ti_gp_buff_start_addr = NULL;
- unsigned int *ti_pbuff_start_addr = NULL;
- unsigned int *ti_cbuff_start_addr = NULL;
+ __le32 *ti_gp_buff = NULL;
+ __le32 *ti_parent_buff = NULL;
+ __le32 *ti_child_buff = NULL;
+ __le32 *ti_gp_buff_start_addr = NULL;
+ __le32 *ti_pbuff_start_addr = NULL;
+ __le32 *ti_cbuff_start_addr = NULL;
struct ext_filesystem *fs = get_fs();
if (*total_remaining_blocks != 0) {
/* triple indirect grand parent block connecting to inode */
ti_gp_blockno = ext4fs_get_new_blk_no();
if (ti_gp_blockno == -1) {
printf("no block left to assign\n");
- goto fail;
+ return;
}
ti_gp_buff = zalloc(fs->blksz);
if (!ti_gp_buff)
- goto fail;
+ return;
ti_gp_buff_start_addr = ti_gp_buff;
(*no_blks_reqd)++;
goto fail;
ti_pbuff_start_addr = ti_parent_buff;
- *ti_gp_buff = ti_parent_blockno;
+ *ti_gp_buff = cpu_to_le32(ti_parent_blockno);
ti_gp_buff++;
(*no_blks_reqd)++;
debug("TIPB %ld: %u\n", ti_parent_blockno,
ti_child_blockno = ext4fs_get_new_blk_no();
if (ti_child_blockno == -1) {
printf("no block left assign\n");
- goto fail;
+ goto fail1;
}
ti_child_buff = zalloc(fs->blksz);
if (!ti_child_buff)
- goto fail;
+ goto fail1;
ti_cbuff_start_addr = ti_child_buff;
- *ti_parent_buff = ti_child_blockno;
+ *ti_parent_buff = cpu_to_le32(ti_child_blockno);
ti_parent_buff++;
(*no_blks_reqd)++;
debug("TICB %ld: %u\n", ti_parent_blockno,
ext4fs_get_new_blk_no();
if (actual_block_no == -1) {
printf("no block left\n");
- goto fail;
+ free(ti_cbuff_start_addr);
+ goto fail1;
}
- *ti_child_buff = actual_block_no;
+ *ti_child_buff = cpu_to_le32(actual_block_no);
debug("TIAB %ld: %u\n", actual_block_no,
*total_remaining_blocks);
break;
}
/* write the child block */
- put_ext4(((uint64_t) (ti_child_blockno *
- fs->blksz)),
+ put_ext4(((uint64_t) ((uint64_t)ti_child_blockno *
+ (uint64_t)fs->blksz)),
ti_cbuff_start_addr, fs->blksz);
free(ti_cbuff_start_addr);
break;
}
/* write the parent block */
- put_ext4(((uint64_t) (ti_parent_blockno * fs->blksz)),
+ put_ext4(((uint64_t) ((uint64_t)ti_parent_blockno * (uint64_t)fs->blksz)),
ti_pbuff_start_addr, fs->blksz);
free(ti_pbuff_start_addr);
break;
}
/* write the grand parent block */
- put_ext4(((uint64_t) (ti_gp_blockno * fs->blksz)),
+ put_ext4(((uint64_t) ((uint64_t)ti_gp_blockno * (uint64_t)fs->blksz)),
ti_gp_buff_start_addr, fs->blksz);
- file_inode->b.blocks.triple_indir_block = ti_gp_blockno;
+ file_inode->b.blocks.triple_indir_block = cpu_to_le32(ti_gp_blockno);
+ free(ti_gp_buff_start_addr);
+ return;
}
+fail1:
+ free(ti_pbuff_start_addr);
fail:
free(ti_gp_buff_start_addr);
}
unsigned int no_blks_reqd = 0;
/* allocation of direct blocks */
- for (i = 0; i < INDIRECT_BLOCKS; i++) {
+ for (i = 0; total_remaining_blocks && i < INDIRECT_BLOCKS; i++) {
direct_blockno = ext4fs_get_new_blk_no();
if (direct_blockno == -1) {
printf("no block left to assign\n");
return;
}
- file_inode->b.blocks.dir_blocks[i] = direct_blockno;
+ file_inode->b.blocks.dir_blocks[i] = cpu_to_le32(direct_blockno);
debug("DB %ld: %u\n", direct_blockno, total_remaining_blocks);
total_remaining_blocks--;
- if (total_remaining_blocks == 0)
- break;
}
alloc_single_indirect_block(file_inode, &total_remaining_blocks,
{
struct ext4_extent_idx *index;
unsigned long long block;
- struct ext_filesystem *fs = get_fs();
+ int blksz = EXT2_BLOCK_SIZE(data);
int i;
while (1) {
index = (struct ext4_extent_idx *)(ext_block + 1);
- if (le32_to_cpu(ext_block->eh_magic) != EXT4_EXT_MAGIC)
- return 0;
+ if (le16_to_cpu(ext_block->eh_magic) != EXT4_EXT_MAGIC)
+ return NULL;
if (ext_block->eh_depth == 0)
return ext_block;
i = -1;
do {
i++;
- if (i >= le32_to_cpu(ext_block->eh_entries))
+ if (i >= le16_to_cpu(ext_block->eh_entries))
break;
- } while (fileblock > le32_to_cpu(index[i].ei_block));
+ } while (fileblock >= le32_to_cpu(index[i].ei_block));
if (--i < 0)
- return 0;
+ return NULL;
- block = le32_to_cpu(index[i].ei_leaf_hi);
+ block = le16_to_cpu(index[i].ei_leaf_hi);
block = (block << 32) + le32_to_cpu(index[i].ei_leaf_lo);
- if (ext4fs_devread(block << log2_blksz, 0, fs->blksz, buf))
+ if (ext4fs_devread((lbaint_t)block << log2_blksz, 0, blksz,
+ buf))
ext_block = (struct ext4_extent_header *)buf;
else
- return 0;
+ return NULL;
}
}
desc_per_blk = EXT2_BLOCK_SIZE(data) / sizeof(struct ext2_block_group);
- blkno = __le32_to_cpu(data->sblock.first_data_block) + 1 +
+ blkno = le32_to_cpu(data->sblock.first_data_block) + 1 +
group / desc_per_blk;
blkoff = (group % desc_per_blk) * sizeof(struct ext2_block_group);
debug("ext4fs read %d group descriptor (blkno %ld blkoff %u)\n",
group, blkno, blkoff);
- return ext4fs_devread(blkno << (LOG2_BLOCK_SIZE(data) - log2blksz),
+ return ext4fs_devread((lbaint_t)blkno <<
+ (LOG2_BLOCK_SIZE(data) - log2blksz),
blkoff, sizeof(struct ext2_block_group),
(char *)blkgrp);
}
/* It is easier to calculate if the first inode is 0. */
ino--;
- status = ext4fs_blockgroup(data, ino / __le32_to_cpu
+ status = ext4fs_blockgroup(data, ino / le32_to_cpu
(sblock->inodes_per_group), &blkgrp);
if (status == 0)
return 0;
inodes_per_block = EXT2_BLOCK_SIZE(data) / fs->inodesz;
- blkno = __le32_to_cpu(blkgrp.inode_table_id) +
- (ino % __le32_to_cpu(sblock->inodes_per_group)) / inodes_per_block;
+ blkno = le32_to_cpu(blkgrp.inode_table_id) +
+ (ino % le32_to_cpu(sblock->inodes_per_group)) / inodes_per_block;
blkoff = (ino % inodes_per_block) * fs->inodesz;
/* Read the inode. */
- status = ext4fs_devread(blkno << (LOG2_BLOCK_SIZE(data) - log2blksz),
- blkoff,
+ status = ext4fs_devread((lbaint_t)blkno << (LOG2_BLOCK_SIZE(data) -
+ log2blksz), blkoff,
sizeof(struct ext2_inode), (char *)inode);
if (status == 0)
return 0;
do {
i++;
- if (i >= le32_to_cpu(ext_block->eh_entries))
+ if (i >= le16_to_cpu(ext_block->eh_entries))
break;
} while (fileblock >= le32_to_cpu(extent[i].ee_block));
if (--i >= 0) {
fileblock -= le32_to_cpu(extent[i].ee_block);
- if (fileblock >= le32_to_cpu(extent[i].ee_len)) {
+ if (fileblock >= le16_to_cpu(extent[i].ee_len)) {
free(buf);
return 0;
}
- start = le32_to_cpu(extent[i].ee_start_hi);
+ start = le16_to_cpu(extent[i].ee_start_hi);
start = (start << 32) +
le32_to_cpu(extent[i].ee_start_lo);
free(buf);
/* Direct blocks. */
if (fileblock < INDIRECT_BLOCKS)
- blknr = __le32_to_cpu(inode->b.blocks.dir_blocks[fileblock]);
+ blknr = le32_to_cpu(inode->b.blocks.dir_blocks[fileblock]);
/* Indirect. */
else if (fileblock < (INDIRECT_BLOCKS + (blksz / 4))) {
}
ext4fs_indir1_size = blksz;
}
- if ((__le32_to_cpu(inode->b.blocks.indir_block) <<
+ if ((le32_to_cpu(inode->b.blocks.indir_block) <<
log2_blksz) != ext4fs_indir1_blkno) {
status =
- ext4fs_devread(__le32_to_cpu
+ ext4fs_devread((lbaint_t)le32_to_cpu
(inode->b.blocks.
indir_block) << log2_blksz, 0,
blksz, (char *)ext4fs_indir1_block);
return 0;
}
ext4fs_indir1_blkno =
- __le32_to_cpu(inode->b.blocks.
+ le32_to_cpu(inode->b.blocks.
indir_block) << log2_blksz;
}
- blknr = __le32_to_cpu(ext4fs_indir1_block
+ blknr = le32_to_cpu(ext4fs_indir1_block
[fileblock - INDIRECT_BLOCKS]);
}
/* Double indirect. */
}
ext4fs_indir1_size = blksz;
}
- if ((__le32_to_cpu(inode->b.blocks.double_indir_block) <<
+ if ((le32_to_cpu(inode->b.blocks.double_indir_block) <<
log2_blksz) != ext4fs_indir1_blkno) {
status =
- ext4fs_devread(__le32_to_cpu
+ ext4fs_devread((lbaint_t)le32_to_cpu
(inode->b.blocks.
double_indir_block) << log2_blksz,
0, blksz,
return -1;
}
ext4fs_indir1_blkno =
- __le32_to_cpu(inode->b.blocks.double_indir_block) <<
+ le32_to_cpu(inode->b.blocks.double_indir_block) <<
log2_blksz;
}
}
ext4fs_indir2_size = blksz;
}
- if ((__le32_to_cpu(ext4fs_indir1_block[rblock / perblock]) <<
+ if ((le32_to_cpu(ext4fs_indir1_block[rblock / perblock]) <<
log2_blksz) != ext4fs_indir2_blkno) {
- status = ext4fs_devread(__le32_to_cpu
+ status = ext4fs_devread((lbaint_t)le32_to_cpu
(ext4fs_indir1_block
[rblock /
perblock]) << log2_blksz, 0,
return -1;
}
ext4fs_indir2_blkno =
- __le32_to_cpu(ext4fs_indir1_block[rblock
+ le32_to_cpu(ext4fs_indir1_block[rblock
/
perblock]) <<
log2_blksz;
}
- blknr = __le32_to_cpu(ext4fs_indir2_block[rblock % perblock]);
+ blknr = le32_to_cpu(ext4fs_indir2_block[rblock % perblock]);
}
/* Tripple indirect. */
else {
}
ext4fs_indir1_size = blksz;
}
- if ((__le32_to_cpu(inode->b.blocks.triple_indir_block) <<
+ if ((le32_to_cpu(inode->b.blocks.triple_indir_block) <<
log2_blksz) != ext4fs_indir1_blkno) {
status = ext4fs_devread
- (__le32_to_cpu(inode->b.blocks.triple_indir_block)
+ ((lbaint_t)
+ le32_to_cpu(inode->b.blocks.triple_indir_block)
<< log2_blksz, 0, blksz,
(char *)ext4fs_indir1_block);
if (status == 0) {
return -1;
}
ext4fs_indir1_blkno =
- __le32_to_cpu(inode->b.blocks.triple_indir_block) <<
+ le32_to_cpu(inode->b.blocks.triple_indir_block) <<
log2_blksz;
}
}
ext4fs_indir2_size = blksz;
}
- if ((__le32_to_cpu(ext4fs_indir1_block[rblock /
+ if ((le32_to_cpu(ext4fs_indir1_block[rblock /
perblock_parent]) <<
log2_blksz)
!= ext4fs_indir2_blkno) {
- status = ext4fs_devread(__le32_to_cpu
+ status = ext4fs_devread((lbaint_t)le32_to_cpu
(ext4fs_indir1_block
[rblock /
perblock_parent]) <<
return -1;
}
ext4fs_indir2_blkno =
- __le32_to_cpu(ext4fs_indir1_block[rblock /
+ le32_to_cpu(ext4fs_indir1_block[rblock /
perblock_parent])
<< log2_blksz;
}
}
ext4fs_indir3_size = blksz;
}
- if ((__le32_to_cpu(ext4fs_indir2_block[rblock
+ if ((le32_to_cpu(ext4fs_indir2_block[rblock
/
perblock_child]) <<
log2_blksz) != ext4fs_indir3_blkno) {
status =
- ext4fs_devread(__le32_to_cpu
+ ext4fs_devread((lbaint_t)le32_to_cpu
(ext4fs_indir2_block
[(rblock / perblock_child)
% (blksz / 4)]) << log2_blksz, 0,
return -1;
}
ext4fs_indir3_blkno =
- __le32_to_cpu(ext4fs_indir2_block[(rblock /
+ le32_to_cpu(ext4fs_indir2_block[(rblock /
perblock_child) %
(blksz /
4)]) <<
log2_blksz;
}
- blknr = __le32_to_cpu(ext4fs_indir3_block
+ blknr = le32_to_cpu(ext4fs_indir3_block
[rblock % perblock_child]);
}
debug("read_allocated_block %ld\n", blknr);
return blknr;
}
-void ext4fs_close(void)
+/**
+ * ext4fs_reinit_global() - Reinitialize values of ext4 write implementation's
+ * global pointers
+ *
+ * This function assures that for a file with the same name but different size
+ * the sequential store on the ext4 filesystem will be correct.
+ *
+ * In this function the global data, responsible for internal representation
+ * of the ext4 data are initialized to the reset state. Without this, during
+ * replacement of the smaller file with the bigger truncation of new file was
+ * performed.
+ */
+void ext4fs_reinit_global(void)
{
- if ((ext4fs_file != NULL) && (ext4fs_root != NULL)) {
- ext4fs_free_node(ext4fs_file, &ext4fs_root->diropen);
- ext4fs_file = NULL;
- }
- if (ext4fs_root != NULL) {
- free(ext4fs_root);
- ext4fs_root = NULL;
- }
if (ext4fs_indir1_block != NULL) {
free(ext4fs_indir1_block);
ext4fs_indir1_block = NULL;
ext4fs_indir3_blkno = -1;
}
}
+void ext4fs_close(void)
+{
+ if ((ext4fs_file != NULL) && (ext4fs_root != NULL)) {
+ ext4fs_free_node(ext4fs_file, &ext4fs_root->diropen);
+ ext4fs_file = NULL;
+ }
+ if (ext4fs_root != NULL) {
+ free(ext4fs_root);
+ ext4fs_root = NULL;
+ }
+
+ ext4fs_reinit_global();
+}
int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
struct ext2fs_node **fnode, int *ftype)
{
unsigned int fpos = 0;
int status;
+ loff_t actread;
struct ext2fs_node *diro = (struct ext2fs_node *) dir;
#ifdef DEBUG
return 0;
}
/* Search the file. */
- while (fpos < __le32_to_cpu(diro->inode.size)) {
+ while (fpos < le32_to_cpu(diro->inode.size)) {
struct ext2_dirent dirent;
status = ext4fs_read_file(diro, fpos,
sizeof(struct ext2_dirent),
- (char *) &dirent);
- if (status < 1)
+ (char *)&dirent, &actread);
+ if (status < 0)
+ return 0;
+
+ if (dirent.direntlen == 0) {
+ printf("Failed to iterate over directory %s\n", name);
return 0;
+ }
if (dirent.namelen != 0) {
char filename[dirent.namelen + 1];
status = ext4fs_read_file(diro,
fpos +
sizeof(struct ext2_dirent),
- dirent.namelen, filename);
- if (status < 1)
+ dirent.namelen, filename,
+ &actread);
+ if (status < 0)
return 0;
fdiro = zalloc(sizeof(struct ext2fs_node));
return 0;
fdiro->data = diro->data;
- fdiro->ino = __le32_to_cpu(dirent.inode);
+ fdiro->ino = le32_to_cpu(dirent.inode);
filename[dirent.namelen] = '\0';
type = FILETYPE_REG;
} else {
status = ext4fs_read_inode(diro->data,
- __le32_to_cpu
+ le32_to_cpu
(dirent.inode),
&fdiro->inode);
if (status == 0) {
}
fdiro->inode_read = 1;
- if ((__le16_to_cpu(fdiro->inode.mode) &
+ if ((le16_to_cpu(fdiro->inode.mode) &
FILETYPE_INO_MASK) ==
FILETYPE_INO_DIRECTORY) {
type = FILETYPE_DIRECTORY;
- } else if ((__le16_to_cpu(fdiro->inode.mode)
+ } else if ((le16_to_cpu(fdiro->inode.mode)
& FILETYPE_INO_MASK) ==
FILETYPE_INO_SYMLINK) {
type = FILETYPE_SYMLINK;
- } else if ((__le16_to_cpu(fdiro->inode.mode)
+ } else if ((le16_to_cpu(fdiro->inode.mode)
& FILETYPE_INO_MASK) ==
FILETYPE_INO_REG) {
type = FILETYPE_REG;
} else {
if (fdiro->inode_read == 0) {
status = ext4fs_read_inode(diro->data,
- __le32_to_cpu(
+ le32_to_cpu(
dirent.inode),
&fdiro->inode);
if (status == 0) {
printf("< ? > ");
break;
}
- printf("%10d %s\n",
- __le32_to_cpu(fdiro->inode.size),
+ printf("%10u %s\n",
+ le32_to_cpu(fdiro->inode.size),
filename);
}
free(fdiro);
}
- fpos += __le16_to_cpu(dirent.direntlen);
+ fpos += le16_to_cpu(dirent.direntlen);
}
return 0;
}
char *symlink;
struct ext2fs_node *diro = node;
int status;
+ loff_t actread;
if (!diro->inode_read) {
status = ext4fs_read_inode(diro->data, diro->ino, &diro->inode);
if (status == 0)
- return 0;
+ return NULL;
}
- symlink = zalloc(__le32_to_cpu(diro->inode.size) + 1);
+ symlink = zalloc(le32_to_cpu(diro->inode.size) + 1);
if (!symlink)
- return 0;
+ return NULL;
- if (__le32_to_cpu(diro->inode.size) <= 60) {
+ if (le32_to_cpu(diro->inode.size) < sizeof(diro->inode.b.symlink)) {
strncpy(symlink, diro->inode.b.symlink,
- __le32_to_cpu(diro->inode.size));
+ le32_to_cpu(diro->inode.size));
} else {
status = ext4fs_read_file(diro, 0,
- __le32_to_cpu(diro->inode.size),
- symlink);
- if (status == 0) {
+ le32_to_cpu(diro->inode.size),
+ symlink, &actread);
+ if ((status < 0) || (actread == 0)) {
free(symlink);
- return 0;
+ return NULL;
}
}
- symlink[__le32_to_cpu(diro->inode.size)] = '\0';
+ symlink[le32_to_cpu(diro->inode.size)] = '\0';
return symlink;
}
return 1;
}
-int ext4fs_open(const char *filename)
+int ext4fs_open(const char *filename, loff_t *len)
{
struct ext2fs_node *fdiro = NULL;
int status;
- int len;
if (ext4fs_root == NULL)
return -1;
if (status == 0)
goto fail;
}
- len = __le32_to_cpu(fdiro->inode.size);
+ *len = le32_to_cpu(fdiro->inode.size);
ext4fs_file = fdiro;
- return len;
+ return 0;
fail:
ext4fs_free_node(fdiro, &ext4fs_root->diropen);
goto fail;
/* Make sure this is an ext2 filesystem. */
- if (__le16_to_cpu(data->sblock.magic) != EXT2_MAGIC)
+ if (le16_to_cpu(data->sblock.magic) != EXT2_MAGIC)
goto fail;
- if (__le32_to_cpu(data->sblock.revision_level == 0))
+ /*
+ * The 64bit feature was enabled when metadata_csum was enabled
+ * and we do not support metadata_csum (and cannot reliably find
+ * files when it is set. Refuse to mount.
+ */
+ if (le32_to_cpu(data->sblock.feature_incompat) & EXT4_FEATURE_INCOMPAT_64BIT) {
+ printf("Unsupported feature found (64bit, possibly metadata_csum), not mounting\n");
+ goto fail;
+ }
+
+ if (le32_to_cpu(data->sblock.revision_level) == 0)
fs->inodesz = 128;
else
- fs->inodesz = __le16_to_cpu(data->sblock.inode_size);
+ fs->inodesz = le16_to_cpu(data->sblock.inode_size);
debug("EXT2 rev %d, inode_size %d\n",
- __le32_to_cpu(data->sblock.revision_level), fs->inodesz);
+ le32_to_cpu(data->sblock.revision_level), fs->inodesz);
data->diropen.data = data;
data->diropen.ino = 2;
projects / oweals / u-boot.git / blobdiff