* functions in this library. So sue me.
*
* %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
* %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#include <string.h>
#if HAVE_UNISTD_H
errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags)
{
- unsigned int group, left, c, d;
+ dgrp_t group;
+ ssize_t left, c, d;
char *buf, *cp;
- blk_t blk;
+ blk64_t blk;
ssize_t actual;
errcode_t retval;
+ loff_t r;
buf = malloc(fs->blocksize * BUF_BLOCKS);
if (!buf)
return ENOMEM;
for (group = 0; group < fs->group_desc_count; group++) {
- blk = fs->group_desc[(unsigned)group].bg_inode_table;
+ blk = ext2fs_inode_table_loc(fs, group);
if (!blk) {
retval = EXT2_ET_MISSING_INODE_TABLE;
goto errout;
c = BUF_BLOCKS;
if (c > left)
c = left;
- retval = io_channel_read_blk(fs->io, blk, c, buf);
+ retval = io_channel_read_blk64(fs->io, blk, c, buf);
if (retval)
goto errout;
cp = buf;
blk++;
left--;
cp += fs->blocksize;
- lseek(fd, fs->blocksize, SEEK_CUR);
+ r = ext2fs_llseek(fd, fs->blocksize,
+ SEEK_CUR);
+ if (r < 0) {
+ retval = errno;
+ goto errout;
+ }
continue;
}
/* Find non-zero blocks */
- for (d=1; d < c; d++) {
- if (check_zero_block(cp + d*fs->blocksize, fs->blocksize))
+ for (d = 1; d < c; d++) {
+ if (check_zero_block(cp +
+ d * fs->blocksize,
+ fs->blocksize))
break;
}
skip_sparse:
- actual = write(fd, cp, fs->blocksize * d);
+ actual = write(fd, cp, d * fs->blocksize);
if (actual == -1) {
retval = errno;
goto errout;
}
- if (actual != (ssize_t) (fs->blocksize * d)) {
+ if (actual != d * fs->blocksize) {
retval = EXT2_ET_SHORT_WRITE;
goto errout;
}
blk += d;
left -= d;
- cp += fs->blocksize * d;
+ cp += d * fs->blocksize;
c -= d;
}
}
errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd,
int flags EXT2FS_ATTR((unused)))
{
- unsigned int group, c, left;
+ dgrp_t group;
+ ssize_t c, left;
char *buf;
- blk_t blk;
+ blk64_t blk;
ssize_t actual;
errcode_t retval;
return ENOMEM;
for (group = 0; group < fs->group_desc_count; group++) {
- blk = fs->group_desc[(unsigned)group].bg_inode_table;
+ blk = ext2fs_inode_table_loc(fs, group);
if (!blk) {
retval = EXT2_ET_MISSING_INODE_TABLE;
goto errout;
retval = errno;
goto errout;
}
- if (actual != (ssize_t) (fs->blocksize * c)) {
+ if (actual != fs->blocksize * c) {
retval = EXT2_ET_SHORT_READ;
goto errout;
}
- retval = io_channel_write_blk(fs->io, blk, c, buf);
+ retval = io_channel_write_blk64(fs->io, blk, c, buf);
if (retval)
goto errout;
char *buf, *cp;
ssize_t actual;
errcode_t retval;
+#ifdef WORDS_BIGENDIAN
+ unsigned int groups_per_block;
+ struct ext2_group_desc *gdp;
+ int j;
+#endif
+
+ if (fs->group_desc == NULL)
+ return EXT2_ET_NO_GDESC;
buf = malloc(fs->blocksize);
if (!buf)
* Write out the superblock
*/
memset(buf, 0, fs->blocksize);
+#ifdef WORDS_BIGENDIAN
+ /*
+ * We're writing out superblock so let's convert
+ * it to little endian and then back if needed
+ */
+ ext2fs_swap_super(fs->super);
+ memcpy(buf, fs->super, SUPERBLOCK_SIZE);
+ ext2fs_swap_super(fs->super);
+#else
memcpy(buf, fs->super, SUPERBLOCK_SIZE);
+#endif
actual = write(fd, buf, fs->blocksize);
if (actual == -1) {
retval = errno;
/*
* Now write out the block group descriptors
*/
+
cp = (char *) fs->group_desc;
- actual = write(fd, cp, fs->blocksize * fs->desc_blocks);
+
+#ifdef WORDS_BIGENDIAN
+ /*
+ * Convert group descriptors to little endian and back
+ * if needed
+ */
+ groups_per_block = EXT2_DESC_PER_BLOCK(fs->super);
+ gdp = (struct ext2_group_desc *) cp;
+ for (j=0; j < groups_per_block*fs->desc_blocks; j++) {
+ gdp = ext2fs_group_desc(fs, fs->group_desc, j);
+ ext2fs_swap_group_desc2(fs, gdp);
+ }
+#endif
+
+ actual = write(fd, cp, (ssize_t)fs->blocksize * fs->desc_blocks);
+
+
+#ifdef WORDS_BIGENDIAN
+ groups_per_block = EXT2_DESC_PER_BLOCK(fs->super);
+ gdp = (struct ext2_group_desc *) cp;
+ for (j=0; j < groups_per_block*fs->desc_blocks; j++) {
+ gdp = ext2fs_group_desc(fs, fs->group_desc, j);
+ ext2fs_swap_group_desc2(fs, gdp);
+ }
+#endif
+
if (actual == -1) {
retval = errno;
goto errout;
}
- if (actual != (ssize_t) (fs->blocksize * fs->desc_blocks)) {
+ if (actual != (ssize_t)fs->blocksize * fs->desc_blocks) {
retval = EXT2_ET_SHORT_WRITE;
goto errout;
}
ssize_t actual, size;
errcode_t retval;
- size = fs->blocksize * (fs->group_desc_count + 1);
+ size = (ssize_t)fs->blocksize * (fs->group_desc_count + 1);
buf = malloc(size);
if (!buf)
return ENOMEM;
memcpy(fs->super, buf, SUPERBLOCK_SIZE);
memcpy(fs->group_desc, buf + fs->blocksize,
- fs->blocksize * fs->group_desc_count);
+ (ssize_t)fs->blocksize * fs->group_desc_count);
retval = 0;
errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags)
{
ext2fs_generic_bitmap bmap;
- errcode_t err, retval;
+ errcode_t retval;
ssize_t actual;
- __u32 itr, cnt, size;
- int c, total_size;
+ size_t c;
+ __u64 itr, cnt, size, total_size;
char buf[1024];
if (flags & IMAGER_FLAG_INODEMAP) {
return retval;
}
bmap = fs->inode_map;
- err = EXT2_ET_MAGIC_INODE_BITMAP;
itr = 1;
- cnt = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count;
+ cnt = (__u64)EXT2_INODES_PER_GROUP(fs->super) *
+ fs->group_desc_count;
size = (EXT2_INODES_PER_GROUP(fs->super) / 8);
} else {
if (!fs->block_map) {
return retval;
}
bmap = fs->block_map;
- err = EXT2_ET_MAGIC_BLOCK_BITMAP;
itr = fs->super->s_first_data_block;
- cnt = EXT2_BLOCKS_PER_GROUP(fs->super) * fs->group_desc_count;
- size = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
+ cnt = EXT2_GROUPS_TO_CLUSTERS(fs->super, fs->group_desc_count);
+ size = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
}
total_size = size * fs->group_desc_count;
if (c > (int) sizeof(buf))
c = sizeof(buf);
actual = write(fd, buf, c);
- if (actual == -1)
+ if (actual < 0)
return errno;
- if (actual != c)
+ if ((size_t) actual != c)
return EXT2_ET_SHORT_WRITE;
size -= c;
}
errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags)
{
ext2fs_generic_bitmap bmap;
- errcode_t err, retval;
- __u32 itr, cnt;
+ errcode_t retval;
+ __u64 itr, cnt;
char buf[1024];
unsigned int size;
ssize_t actual;
return retval;
}
bmap = fs->inode_map;
- err = EXT2_ET_MAGIC_INODE_BITMAP;
itr = 1;
- cnt = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count;
+ cnt = (__u64)EXT2_INODES_PER_GROUP(fs->super) *
+ fs->group_desc_count;
size = (EXT2_INODES_PER_GROUP(fs->super) / 8);
} else {
if (!fs->block_map) {
return retval;
}
bmap = fs->block_map;
- err = EXT2_ET_MAGIC_BLOCK_BITMAP;
itr = fs->super->s_first_data_block;
- cnt = EXT2_BLOCKS_PER_GROUP(fs->super) * fs->group_desc_count;
+ cnt = EXT2_GROUPS_TO_BLOCKS(fs->super, fs->group_desc_count);
size = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff