void ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t,
struct ext2_inode *f, int hostorder)
{
ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) t,
(struct ext2_inode_large *) f, hostorder,
sizeof(struct ext2_inode));
}
errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode, int bufsize)
{
blk64_t block_nr;
unsigned long group, block, offset;
errcode_t retval = 0;
struct ext2_inode_large *w_inode;
char *ptr;
unsigned i;
int clen;
int length = EXT2_INODE_SIZE(fs->super);
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
/* Check to see if user provided an override function */
if (fs->write_inode) {
retval = (fs->write_inode)(fs, ino, inode);
if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
return retval;
}
if ((ino == 0) || (ino > fs->super->s_inodes_count))
return EXT2_ET_BAD_INODE_NUM;
/* Prepare our shadow buffer for read/modify/byteswap/write */
retval = ext2fs_get_mem(length, &w_inode);
if (retval)
return retval;
if (bufsize < length) {
int old_flags = fs->flags;
fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
retval = ext2fs_read_inode_full(fs, ino,
(struct ext2_inode *)w_inode,
length);
fs->flags = (old_flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
(fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
if (retval)
goto errout;
}
/* Check to see if the inode cache needs to be updated */
if (fs->icache) {
for (i=0; i < fs->icache->cache_size; i++) {
if (fs->icache->cache[i].ino == ino) {
memcpy(fs->icache->cache[i].inode, inode,
(bufsize > length) ? length : bufsize);
break;
}
}
} else {
retval = ext2fs_create_inode_cache(fs, 4);
if (retval)
goto errout;
}
memcpy(w_inode, inode, (bufsize > length) ? length : bufsize);
if (!(fs->flags & EXT2_FLAG_RW)) {
retval = EXT2_ET_RO_FILSYS;
goto errout;
}
#ifdef WORDS_BIGENDIAN
ext2fs_swap_inode_full(fs, w_inode, w_inode, 1, length);
#endif
retval = ext2fs_inode_csum_set(fs, ino, w_inode);
if (retval)
goto errout;
group = (ino - 1) / EXT2_INODES_PER_GROUP(fs->super);
offset = ((ino - 1) % EXT2_INODES_PER_GROUP(fs->super)) *
EXT2_INODE_SIZE(fs->super);
block = offset >> EXT2_BLOCK_SIZE_BITS(fs->super);
if (!ext2fs_inode_table_loc(fs, (unsigned) group)) {
retval = EXT2_ET_MISSING_INODE_TABLE;
goto errout;
}
block_nr = ext2fs_inode_table_loc(fs, (unsigned) group) + block;
offset &= (EXT2_BLOCK_SIZE(fs->super) - 1);
ptr = (char *) w_inode;
while (length) {
clen = length;
if ((offset + length) > fs->blocksize)
clen = fs->blocksize - offset;
if (fs->icache->buffer_blk != block_nr) {
retval = io_channel_read_blk64(fs->io, block_nr, 1,
fs->icache->buffer);
if (retval)
goto errout;
fs->icache->buffer_blk = block_nr;
}
memcpy((char *) fs->icache->buffer + (unsigned) offset,
ptr, clen);
retval = io_channel_write_blk64(fs->io, block_nr, 1,
fs->icache->buffer);
if (retval)
goto errout;
offset = 0;
ptr += clen;
length -= clen;
block_nr++;
}
fs->flags |= EXT2_FLAG_CHANGED;
errout:
ext2fs_free_mem(&w_inode);
return retval;
}
/*
* Functions to read and write a single inode.
*/
errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode, int bufsize)
{
blk64_t block_nr;
unsigned long group, block, offset;
char *ptr;
errcode_t retval;
unsigned i;
int clen, inodes_per_block;
io_channel io;
int length = EXT2_INODE_SIZE(fs->super);
struct ext2_inode_large *iptr;
int cache_slot, fail_csum;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
/* Check to see if user has an override function */
if (fs->read_inode &&
((bufsize == sizeof(struct ext2_inode)) ||
(EXT2_INODE_SIZE(fs->super) == sizeof(struct ext2_inode)))) {
retval = (fs->read_inode)(fs, ino, inode);
if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
return retval;
}
if ((ino == 0) || (ino > fs->super->s_inodes_count))
return EXT2_ET_BAD_INODE_NUM;
/* Create inode cache if not present */
if (!fs->icache) {
retval = ext2fs_create_inode_cache(fs, 4);
if (retval)
return retval;
}
/* Check to see if it's in the inode cache */
for (i = 0; i < fs->icache->cache_size; i++) {
if (fs->icache->cache[i].ino == ino) {
memcpy(inode, fs->icache->cache[i].inode,
(bufsize > length) ? length : bufsize);
return 0;
}
}
if (fs->flags & EXT2_FLAG_IMAGE_FILE) {
inodes_per_block = fs->blocksize / EXT2_INODE_SIZE(fs->super);
block_nr = fs->image_header->offset_inode / fs->blocksize;
block_nr += (ino - 1) / inodes_per_block;
offset = ((ino - 1) % inodes_per_block) *
EXT2_INODE_SIZE(fs->super);
io = fs->image_io;
} else {
group = (ino - 1) / EXT2_INODES_PER_GROUP(fs->super);
if (group > fs->group_desc_count)
return EXT2_ET_BAD_INODE_NUM;
offset = ((ino - 1) % EXT2_INODES_PER_GROUP(fs->super)) *
EXT2_INODE_SIZE(fs->super);
block = offset >> EXT2_BLOCK_SIZE_BITS(fs->super);
if (!ext2fs_inode_table_loc(fs, (unsigned) group))
return EXT2_ET_MISSING_INODE_TABLE;
block_nr = ext2fs_inode_table_loc(fs, group) +
block;
io = fs->io;
}
offset &= (EXT2_BLOCK_SIZE(fs->super) - 1);
cache_slot = (fs->icache->cache_last + 1) % fs->icache->cache_size;
iptr = (struct ext2_inode_large *)fs->icache->cache[cache_slot].inode;
ptr = (char *) iptr;
while (length) {
clen = length;
if ((offset + length) > fs->blocksize)
clen = fs->blocksize - offset;
if (block_nr != fs->icache->buffer_blk) {
retval = io_channel_read_blk64(io, block_nr, 1,
fs->icache->buffer);
if (retval)
return retval;
fs->icache->buffer_blk = block_nr;
}
memcpy(ptr, ((char *) fs->icache->buffer) + (unsigned) offset,
clen);
offset = 0;
length -= clen;
ptr += clen;
block_nr++;
}
length = EXT2_INODE_SIZE(fs->super);
/* Verify the inode checksum. */
fail_csum = !ext2fs_inode_csum_verify(fs, ino, iptr);
#ifdef WORDS_BIGENDIAN
ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) iptr,
(struct ext2_inode_large *) iptr,
0, length);
#endif
/* Update the inode cache bookkeeping */
if (!fail_csum) {
fs->icache->cache_last = cache_slot;
fs->icache->cache[cache_slot].ino = ino;
}
memcpy(inode, iptr, (bufsize > length) ? length : bufsize);
if (!(fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) && fail_csum)
return EXT2_ET_INODE_CSUM_INVALID;
return 0;
}
errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, ext2_ino_t *ino,
struct ext2_inode *inode, int bufsize)
{
errcode_t retval;
int extra_bytes = 0;
int length;
struct ext2_inode_large *iptr = (struct ext2_inode_large *)inode;
char *iblock_status;
unsigned int iblk;
EXT2_CHECK_MAGIC(scan, EXT2_ET_MAGIC_INODE_SCAN);
length = EXT2_INODE_SIZE(scan->fs->super);
iblock_status = SCAN_BLOCK_STATUS(scan);
/*
* Do we need to start reading a new block group?
*/
if (scan->inodes_left <= 0) {
force_new_group:
if (scan->done_group) {
retval = (scan->done_group)
(scan->fs, scan, scan->current_group,
scan->done_group_data);
if (retval)
return retval;
}
if (scan->groups_left <= 0) {
*ino = 0;
return 0;
}
retval = get_next_blockgroup(scan);
if (retval)
return retval;
}
/*
* These checks are done outside the above if statement so
* they can be done for block group #0.
*/
if ((scan->scan_flags & EXT2_SF_DO_LAZY) &&
(ext2fs_bg_flags_test(scan->fs, scan->current_group, EXT2_BG_INODE_UNINIT)
))
goto force_new_group;
if (scan->inodes_left == 0)
goto force_new_group;
if (scan->current_block == 0) {
if (scan->scan_flags & EXT2_SF_SKIP_MISSING_ITABLE) {
goto force_new_group;
} else
return EXT2_ET_MISSING_INODE_TABLE;
}
/*
* Have we run out of space in the inode buffer? If so, we
* need to read in more blocks.
*/
if (scan->bytes_left < scan->inode_size) {
memcpy(scan->temp_buffer, scan->ptr, scan->bytes_left);
extra_bytes = scan->bytes_left;
retval = get_next_blocks(scan);
if (retval)
return retval;
#if 0
/*
* XXX test Need check for used inode somehow.
* (Note: this is hard.)
*/
if (is_empty_scan(scan))
goto force_new_group;
#endif
}
if (bufsize < length) {
retval = ext2fs_get_mem(length, &iptr);
if (retval)
return retval;
}
retval = 0;
iblk = scan->current_inode % EXT2_INODES_PER_GROUP(scan->fs->super) /
EXT2_INODES_PER_BLOCK(scan->fs->super) %
scan->inode_buffer_blocks;
if (extra_bytes) {
memcpy(scan->temp_buffer+extra_bytes, scan->ptr,
scan->inode_size - extra_bytes);
scan->ptr += scan->inode_size - extra_bytes;
scan->bytes_left -= scan->inode_size - extra_bytes;
/* Verify the inode checksum. */
if (!(iblock_status[iblk] & IBLOCK_STATUS_CSUMS_OK) &&
!(scan->fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) &&
!ext2fs_inode_csum_verify(scan->fs, scan->current_inode + 1,
(struct ext2_inode_large *)scan->temp_buffer))
retval = EXT2_ET_INODE_CSUM_INVALID;
#ifdef WORDS_BIGENDIAN
memset(iptr, 0, length);
ext2fs_swap_inode_full(scan->fs,
(struct ext2_inode_large *) iptr,
(struct ext2_inode_large *) scan->temp_buffer,
0, length);
#else
memcpy(iptr, scan->temp_buffer, length);
#endif
if (scan->scan_flags & EXT2_SF_BAD_EXTRA_BYTES)
retval = EXT2_ET_BAD_BLOCK_IN_INODE_TABLE;
scan->scan_flags &= ~EXT2_SF_BAD_EXTRA_BYTES;
} else {
/* Verify the inode checksum. */
if (!(iblock_status[iblk] & IBLOCK_STATUS_CSUMS_OK) &&
!(scan->fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) &&
!ext2fs_inode_csum_verify(scan->fs, scan->current_inode + 1,
(struct ext2_inode_large *)scan->ptr))
retval = EXT2_ET_INODE_CSUM_INVALID;
#ifdef WORDS_BIGENDIAN
memset(iptr, 0, length);
ext2fs_swap_inode_full(scan->fs,
(struct ext2_inode_large *) iptr,
(struct ext2_inode_large *) scan->ptr,
0, length);
#else
memcpy(iptr, scan->ptr, length);
#endif
scan->ptr += scan->inode_size;
scan->bytes_left -= scan->inode_size;
if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK)
retval = EXT2_ET_BAD_BLOCK_IN_INODE_TABLE;
}
if ((iblock_status[iblk] & IBLOCK_STATUS_INSANE) &&
(retval == 0 || retval == EXT2_ET_INODE_CSUM_INVALID))
retval = EXT2_ET_INODE_IS_GARBAGE;
scan->inodes_left--;
scan->current_inode++;
*ino = scan->current_inode;
if (iptr != (struct ext2_inode_large *)inode) {
memcpy(inode, iptr, bufsize);
ext2fs_free_mem(&iptr);
}
return retval;
}
/*
* Check all the inodes that we just read into the buffer. Record what we
* find here -- currently, we can observe that all checksums are ok; more
* than half the inodes are insane; or no conclusions at all.
*/
static void check_inode_block_sanity(ext2_inode_scan scan, blk64_t num_blocks)
{
ext2_ino_t ino, inodes_to_scan;
unsigned int badness, checksum_failures;
unsigned int inodes_in_buf, inodes_per_block;
char *p;
struct ext2_inode_large *inode;
char *block_status;
unsigned int blk, bad_csum;
if (!(scan->scan_flags & EXT2_SF_WARN_GARBAGE_INODES))
return;
inodes_to_scan = scan->inodes_left;
inodes_in_buf = num_blocks * scan->fs->blocksize / scan->inode_size;
if (inodes_to_scan > inodes_in_buf)
inodes_to_scan = inodes_in_buf;
p = (char *) scan->inode_buffer;
ino = scan->current_inode + 1;
checksum_failures = badness = 0;
block_status = SCAN_BLOCK_STATUS(scan);
memset(block_status, 0, scan->inode_buffer_blocks);
inodes_per_block = EXT2_INODES_PER_BLOCK(scan->fs->super);
if (inodes_per_block < 2)
return;
#ifdef WORDS_BIGENDIAN
if (ext2fs_get_mem(EXT2_INODE_SIZE(scan->fs->super), &inode))
return;
#endif
while (inodes_to_scan > 0) {
blk = (p - (char *)scan->inode_buffer) / scan->fs->blocksize;
bad_csum = ext2fs_inode_csum_verify(scan->fs, ino,
(struct ext2_inode_large *) p) == 0;
#ifdef WORDS_BIGENDIAN
ext2fs_swap_inode_full(scan->fs,
(struct ext2_inode_large *) inode,
(struct ext2_inode_large *) p,
0, EXT2_INODE_SIZE(scan->fs->super));
#else
inode = (struct ext2_inode_large *) p;
#endif
/* Is this inode insane? */
if (bad_csum) {
checksum_failures++;
badness++;
} else if (extent_head_looks_insane(inode) ||
block_map_looks_insane(scan->fs, inode))
badness++;
/* If more than half are insane, declare the whole block bad */
if (badness > inodes_per_block / 2) {
unsigned int ino_adj;
block_status[blk] |= IBLOCK_STATUS_INSANE;
ino_adj = inodes_per_block -
((ino - 1) % inodes_per_block);
if (ino_adj > inodes_to_scan)
ino_adj = inodes_to_scan;
inodes_to_scan -= ino_adj;
p += scan->inode_size * ino_adj;
ino += ino_adj;
checksum_failures = badness = 0;
continue;
}
if ((ino % inodes_per_block) == 0) {
if (checksum_failures == 0)
block_status[blk] |= IBLOCK_STATUS_CSUMS_OK;
checksum_failures = badness = 0;
}
inodes_to_scan--;
p += scan->inode_size;
ino++;
};
#ifdef WORDS_BIGENDIAN
ext2fs_free_mem(&inode);
#endif
}
errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode, int bufsize)
{
blk64_t block_nr;
unsigned long group, block, offset;
errcode_t retval = 0;
struct ext2_inode_large temp_inode, *w_inode;
char *ptr;
int clen, i, length;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
/* Check to see if user provided an override function */
if (fs->write_inode) {
retval = (fs->write_inode)(fs, ino, inode);
if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
return retval;
}
/* Check to see if the inode cache needs to be updated */
if (fs->icache) {
for (i=0; i < fs->icache->cache_size; i++) {
if (fs->icache->cache[i].ino == ino) {
fs->icache->cache[i].inode = *inode;
break;
}
}
} else {
retval = create_icache(fs);
if (retval)
return retval;
}
if (!(fs->flags & EXT2_FLAG_RW))
return EXT2_ET_RO_FILSYS;
if ((ino == 0) || (ino > fs->super->s_inodes_count))
return EXT2_ET_BAD_INODE_NUM;
length = bufsize;
if (length < EXT2_INODE_SIZE(fs->super))
length = EXT2_INODE_SIZE(fs->super);
if (length > (int) sizeof(struct ext2_inode_large)) {
w_inode = malloc(length);
if (!w_inode) {
retval = ENOMEM;
goto errout;
}
} else
w_inode = &temp_inode;
memset(w_inode, 0, length);
#ifdef WORDS_BIGENDIAN
ext2fs_swap_inode_full(fs, w_inode,
(struct ext2_inode_large *) inode,
1, bufsize);
#else
memcpy(w_inode, inode, bufsize);
#endif
group = (ino - 1) / EXT2_INODES_PER_GROUP(fs->super);
offset = ((ino - 1) % EXT2_INODES_PER_GROUP(fs->super)) *
EXT2_INODE_SIZE(fs->super);
block = offset >> EXT2_BLOCK_SIZE_BITS(fs->super);
if (!ext2fs_inode_table_loc(fs, (unsigned) group)) {
retval = EXT2_ET_MISSING_INODE_TABLE;
goto errout;
}
block_nr = ext2fs_inode_table_loc(fs, (unsigned) group) + block;
offset &= (EXT2_BLOCK_SIZE(fs->super) - 1);
length = EXT2_INODE_SIZE(fs->super);
if (length > bufsize)
length = bufsize;
ptr = (char *) w_inode;
while (length) {
clen = length;
if ((offset + length) > fs->blocksize)
clen = fs->blocksize - offset;
if (fs->icache->buffer_blk != block_nr) {
retval = io_channel_read_blk64(fs->io, block_nr, 1,
fs->icache->buffer);
if (retval)
goto errout;
fs->icache->buffer_blk = block_nr;
}
memcpy((char *) fs->icache->buffer + (unsigned) offset,
ptr, clen);
retval = io_channel_write_blk64(fs->io, block_nr, 1,
fs->icache->buffer);
if (retval)
goto errout;
offset = 0;
ptr += clen;
length -= clen;
block_nr++;
}
fs->flags |= EXT2_FLAG_CHANGED;
errout:
if (w_inode && w_inode != &temp_inode)
free(w_inode);
return retval;
}
/*
* Functions to read and write a single inode.
*/
errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode, int bufsize)
{
blk64_t block_nr;
unsigned long group, block, offset;
char *ptr;
errcode_t retval;
int clen, i, inodes_per_block, length;
io_channel io;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
/* Check to see if user has an override function */
if (fs->read_inode &&
((bufsize == sizeof(struct ext2_inode)) ||
(EXT2_INODE_SIZE(fs->super) == sizeof(struct ext2_inode)))) {
retval = (fs->read_inode)(fs, ino, inode);
if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
return retval;
}
if ((ino == 0) || (ino > fs->super->s_inodes_count))
return EXT2_ET_BAD_INODE_NUM;
/* Create inode cache if not present */
if (!fs->icache) {
retval = create_icache(fs);
if (retval)
return retval;
}
/* Check to see if it's in the inode cache */
if (bufsize == sizeof(struct ext2_inode)) {
/* only old good inode can be retrieved from the cache */
for (i=0; i < fs->icache->cache_size; i++) {
if (fs->icache->cache[i].ino == ino) {
*inode = fs->icache->cache[i].inode;
return 0;
}
}
}
if (fs->flags & EXT2_FLAG_IMAGE_FILE) {
inodes_per_block = fs->blocksize / EXT2_INODE_SIZE(fs->super);
block_nr = fs->image_header->offset_inode / fs->blocksize;
block_nr += (ino - 1) / inodes_per_block;
offset = ((ino - 1) % inodes_per_block) *
EXT2_INODE_SIZE(fs->super);
io = fs->image_io;
} else {
group = (ino - 1) / EXT2_INODES_PER_GROUP(fs->super);
if (group > fs->group_desc_count)
return EXT2_ET_BAD_INODE_NUM;
offset = ((ino - 1) % EXT2_INODES_PER_GROUP(fs->super)) *
EXT2_INODE_SIZE(fs->super);
block = offset >> EXT2_BLOCK_SIZE_BITS(fs->super);
if (!ext2fs_inode_table_loc(fs, (unsigned) group))
return EXT2_ET_MISSING_INODE_TABLE;
block_nr = ext2fs_inode_table_loc(fs, group) +
block;
io = fs->io;
}
offset &= (EXT2_BLOCK_SIZE(fs->super) - 1);
length = EXT2_INODE_SIZE(fs->super);
if (bufsize < length)
length = bufsize;
ptr = (char *) inode;
while (length) {
clen = length;
if ((offset + length) > fs->blocksize)
clen = fs->blocksize - offset;
if (block_nr != fs->icache->buffer_blk) {
retval = io_channel_read_blk64(io, block_nr, 1,
fs->icache->buffer);
if (retval)
return retval;
fs->icache->buffer_blk = block_nr;
}
memcpy(ptr, ((char *) fs->icache->buffer) + (unsigned) offset,
clen);
offset = 0;
length -= clen;
ptr += clen;
block_nr++;
}
#ifdef WORDS_BIGENDIAN
ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) inode,
(struct ext2_inode_large *) inode,
0, bufsize);
#endif
/* Update the inode cache */
fs->icache->cache_last = (fs->icache->cache_last + 1) %
fs->icache->cache_size;
fs->icache->cache[fs->icache->cache_last].ino = ino;
fs->icache->cache[fs->icache->cache_last].inode = *inode;
return 0;
}
errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, ext2_ino_t *ino,
struct ext2_inode *inode, int bufsize)
{
errcode_t retval;
int extra_bytes = 0;
EXT2_CHECK_MAGIC(scan, EXT2_ET_MAGIC_INODE_SCAN);
/*
* Do we need to start reading a new block group?
*/
if (scan->inodes_left <= 0) {
force_new_group:
if (scan->done_group) {
retval = (scan->done_group)
(scan->fs, scan, scan->current_group,
scan->done_group_data);
if (retval)
return retval;
}
if (scan->groups_left <= 0) {
*ino = 0;
return 0;
}
retval = get_next_blockgroup(scan);
if (retval)
return retval;
}
/*
* These checks are done outside the above if statement so
* they can be done for block group #0.
*/
if ((scan->scan_flags & EXT2_SF_DO_LAZY) &&
(ext2fs_bg_flags_test(scan->fs, scan->current_group, EXT2_BG_INODE_UNINIT)
))
goto force_new_group;
if (scan->inodes_left == 0)
goto force_new_group;
if (scan->current_block == 0) {
if (scan->scan_flags & EXT2_SF_SKIP_MISSING_ITABLE) {
goto force_new_group;
} else
return EXT2_ET_MISSING_INODE_TABLE;
}
/*
* Have we run out of space in the inode buffer? If so, we
* need to read in more blocks.
*/
if (scan->bytes_left < scan->inode_size) {
memcpy(scan->temp_buffer, scan->ptr, scan->bytes_left);
extra_bytes = scan->bytes_left;
retval = get_next_blocks(scan);
if (retval)
return retval;
#if 0
/*
* XXX test Need check for used inode somehow.
* (Note: this is hard.)
*/
if (is_empty_scan(scan))
goto force_new_group;
#endif
}
retval = 0;
if (extra_bytes) {
memcpy(scan->temp_buffer+extra_bytes, scan->ptr,
scan->inode_size - extra_bytes);
scan->ptr += scan->inode_size - extra_bytes;
scan->bytes_left -= scan->inode_size - extra_bytes;
#ifdef WORDS_BIGENDIAN
memset(inode, 0, bufsize);
ext2fs_swap_inode_full(scan->fs,
(struct ext2_inode_large *) inode,
(struct ext2_inode_large *) scan->temp_buffer,
0, bufsize);
#else
*inode = *((struct ext2_inode *) scan->temp_buffer);
#endif
if (scan->scan_flags & EXT2_SF_BAD_EXTRA_BYTES)
retval = EXT2_ET_BAD_BLOCK_IN_INODE_TABLE;
scan->scan_flags &= ~EXT2_SF_BAD_EXTRA_BYTES;
} else {
#ifdef WORDS_BIGENDIAN
memset(inode, 0, bufsize);
ext2fs_swap_inode_full(scan->fs,
(struct ext2_inode_large *) inode,
(struct ext2_inode_large *) scan->ptr,
0, bufsize);
#else
memcpy(inode, scan->ptr, bufsize);
#endif
scan->ptr += scan->inode_size;
scan->bytes_left -= scan->inode_size;
if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK)
retval = EXT2_ET_BAD_BLOCK_IN_INODE_TABLE;
}
scan->inodes_left--;
scan->current_inode++;
*ino = scan->current_inode;
return retval;
}