#include "ext4_errno.h"
#include "ext4_blockdev.h"
#include "ext4_super.h"
-#include "ext4_crc32c.h"
+#include "ext4_crc32.h"
#include "ext4_debug.h"
#include "ext4_block_group.h"
#include "ext4_balloc.h"
}
/*Check features_read_only*/
- v = (ext4_get32(&fs->sb, features_read_only) &
- (~CONFIG_SUPPORTED_FRO_COM));
+ v = ext4_get32(&fs->sb, features_read_only);
+ v &= ~CONFIG_SUPPORTED_FRO_COM;
if (v) {
ext4_dbg(DEBUG_FS, DBG_WARN
- "sblock has unsupported features read only:\n");
+ "sblock has unsupported features read only:\n");
ext4_fs_debug_features_ro(v);
*read_only = true;
return EOK;
* @param bgid block group id
* @return Error code
*/
-static bool ext4_block_in_group(struct ext4_sblock *s,
- ext4_fsblk_t baddr,
- uint32_t bgid)
+static bool ext4_block_in_group(struct ext4_sblock *s, ext4_fsblk_t baddr,
+ uint32_t bgid)
{
uint32_t actual_bgid;
actual_bgid = ext4_balloc_get_bgid_of_block(s, baddr);
uint32_t inode_table_bcnt = inodes_per_group * inode_size / block_size;
struct ext4_block block_bitmap;
- rc = ext4_block_get_noread(bg_ref->fs->bdev, &block_bitmap, bmp_blk);
+ rc = ext4_trans_block_get_noread(bg_ref->fs->bdev, &block_bitmap, bmp_blk);
if (rc != EOK)
return rc;
* of bitmap ), set rest of the block bitmap to 1
*/
ext4_fs_mark_bitmap_end(group_blocks, block_size * 8, block_bitmap.data);
- block_bitmap.dirty = true;
+ ext4_trans_set_block_dirty(block_bitmap.buf);
ext4_balloc_set_bitmap_csum(sb, bg_ref->block_group, block_bitmap.data);
bg_ref->dirty = true;
ext4_fsblk_t bitmap_block_addr = ext4_bg_get_inode_bitmap(bg, sb);
struct ext4_block b;
- rc = ext4_block_get_noread(bg_ref->fs->bdev, &b, bitmap_block_addr);
+ rc = ext4_trans_block_get_noread(bg_ref->fs->bdev, &b, bitmap_block_addr);
if (rc != EOK)
return rc;
if (i < end_bit)
memset(b.data + (i >> 3), 0xff, (end_bit - i) >> 3);
- b.dirty = true;
+ ext4_trans_set_block_dirty(b.buf);
ext4_ialloc_set_bitmap_csum(sb, bg, b.data);
bg_ref->dirty = true;
/* Initialization of all itable blocks */
for (fblock = first_block; fblock <= last_block; ++fblock) {
struct ext4_block b;
- int rc = ext4_block_get_noread(bg_ref->fs->bdev, &b, fblock);
+ int rc = ext4_trans_block_get_noread(bg_ref->fs->bdev, &b, fblock);
if (rc != EOK)
return rc;
memset(b.data, 0, block_size);
- b.dirty = true;
+ ext4_trans_set_block_dirty(b.buf);
ext4_block_set(bg_ref->fs->bdev, &b);
if (rc != EOK)
uint32_t dsc_per_block)
{
uint32_t first_meta_bg, dsc_id;
-
int has_super = 0;
-
dsc_id = bgid / dsc_per_block;
first_meta_bg = ext4_sb_first_meta_bg(s);
- if (!ext4_sb_feature_incom(s, EXT4_FINCOM_META_BG) ||
- dsc_id < first_meta_bg)
+ bool meta_bg = ext4_sb_feature_incom(s, EXT4_FINCOM_META_BG);
+
+ if (!meta_bg || dsc_id < first_meta_bg)
return ext4_get32(s, first_data_block) + dsc_id + 1;
if (ext4_sb_is_super_in_bg(s, bgid))
checksum = ext4_crc32c(EXT4_CRC32_INIT, sb->uuid,
sizeof(sb->uuid));
/* Then calculate crc32 checksum against bgid */
- checksum = ext4_crc32c(checksum, &le32_bgid,
- sizeof(bgid));
+ checksum = ext4_crc32c(checksum, &le32_bgid, sizeof(bgid));
/* Finally calculate crc32 checksum against block_group_desc */
- checksum = ext4_crc32c(checksum, bg,
- ext4_sb_get_desc_size(sb));
+ checksum = ext4_crc32c(checksum, bg, ext4_sb_get_desc_size(sb));
bg->checksum = orig_checksum;
crc = checksum & 0xFFFF;
uint32_t offset = (uint32_t)(checksum - base);
/* Convert block group index to little endian */
- uint32_t le_group = to_le32(bgid);
+ uint32_t group = to_le32(bgid);
/* Initialization */
crc = ext4_bg_crc16(~0, sb->uuid, sizeof(sb->uuid));
/* Include index of block group */
- crc =
- ext4_bg_crc16(crc, (uint8_t *)&le_group, sizeof(le_group));
+ crc = ext4_bg_crc16(crc, (uint8_t *)&group, sizeof(group));
/* Compute crc from the first part (stop before checksum field)
*/
/* Checksum of the rest of block group descriptor */
if ((ext4_sb_feature_incom(sb, EXT4_FINCOM_64BIT)) &&
- (offset < ext4_sb_get_desc_size(sb)))
+ (offset < ext4_sb_get_desc_size(sb))) {
- crc = ext4_bg_crc16(crc, ((uint8_t *)bg) + offset,
- ext4_sb_get_desc_size(sb) - offset);
+ const uint8_t *start = ((uint8_t *)bg) + offset;
+ size_t len = ext4_sb_get_desc_size(sb) - offset;
+ crc = ext4_bg_crc16(crc, start, len);
+ }
}
return crc;
}
if (!ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_METADATA_CSUM))
return true;
- return ext4_fs_bg_checksum(sb,
- bgid,
- bg) ==
- to_le16(bg->checksum);
+ return ext4_fs_bg_checksum(sb, bgid, bg) == to_le16(bg->checksum);
}
#else
#define ext4_fs_verify_bg_csum(...) true
struct ext4_block_group_ref *ref)
{
/* Compute number of descriptors, that fits in one data block */
- uint32_t dsc_per_block =
- ext4_sb_get_block_size(&fs->sb) / ext4_sb_get_desc_size(&fs->sb);
+ uint32_t block_size = ext4_sb_get_block_size(&fs->sb);
+ uint32_t dsc_cnt = block_size / ext4_sb_get_desc_size(&fs->sb);
/* Block group descriptor table starts at the next block after
* superblock */
- uint64_t block_id =
- ext4_fs_get_descriptor_block(&fs->sb, bgid, dsc_per_block);
+ uint64_t block_id = ext4_fs_get_descriptor_block(&fs->sb, bgid, dsc_cnt);
- uint32_t offset =
- (bgid % dsc_per_block) * ext4_sb_get_desc_size(&fs->sb);
+ uint32_t offset = (bgid % dsc_cnt) * ext4_sb_get_desc_size(&fs->sb);
- int rc = ext4_block_get(fs->bdev, &ref->block, block_id);
+ int rc = ext4_trans_block_get(fs->bdev, &ref->block, block_id);
if (rc != EOK)
return rc;
ref->fs = fs;
ref->index = bgid;
ref->dirty = false;
+ struct ext4_bgroup *bg = ref->block_group;
- if (!ext4_fs_verify_bg_csum(&fs->sb,
- bgid,
- ref->block_group)) {
+ if (!ext4_fs_verify_bg_csum(&fs->sb, bgid, bg)) {
ext4_dbg(DEBUG_FS,
DBG_WARN "Block group descriptor checksum failed."
"Block group index: %" PRIu32"\n",
bgid);
}
- if (ext4_bg_has_flag(ref->block_group, EXT4_BLOCK_GROUP_BLOCK_UNINIT)) {
+ if (ext4_bg_has_flag(bg, EXT4_BLOCK_GROUP_BLOCK_UNINIT)) {
rc = ext4_fs_init_block_bitmap(ref);
if (rc != EOK) {
ext4_block_set(fs->bdev, &ref->block);
return rc;
}
- ext4_bg_clear_flag(ref->block_group,
- EXT4_BLOCK_GROUP_BLOCK_UNINIT);
-
+ ext4_bg_clear_flag(bg, EXT4_BLOCK_GROUP_BLOCK_UNINIT);
ref->dirty = true;
}
- if (ext4_bg_has_flag(ref->block_group, EXT4_BLOCK_GROUP_INODE_UNINIT)) {
+ if (ext4_bg_has_flag(bg, EXT4_BLOCK_GROUP_INODE_UNINIT)) {
rc = ext4_fs_init_inode_bitmap(ref);
if (rc != EOK) {
ext4_block_set(ref->fs->bdev, &ref->block);
return rc;
}
- ext4_bg_clear_flag(ref->block_group,
- EXT4_BLOCK_GROUP_INODE_UNINIT);
+ ext4_bg_clear_flag(bg, EXT4_BLOCK_GROUP_INODE_UNINIT);
- if (!ext4_bg_has_flag(ref->block_group,
- EXT4_BLOCK_GROUP_ITABLE_ZEROED)) {
+ if (!ext4_bg_has_flag(bg, EXT4_BLOCK_GROUP_ITABLE_ZEROED)) {
rc = ext4_fs_init_inode_table(ref);
if (rc != EOK) {
ext4_block_set(fs->bdev, &ref->block);
return rc;
}
- ext4_bg_set_flag(ref->block_group,
- EXT4_BLOCK_GROUP_ITABLE_ZEROED);
+ ext4_bg_set_flag(bg, EXT4_BLOCK_GROUP_ITABLE_ZEROED);
}
ref->dirty = true;
/* Check if reference modified */
if (ref->dirty) {
/* Compute new checksum of block group */
- uint16_t checksum = ext4_fs_bg_checksum(
- &ref->fs->sb, ref->index, ref->block_group);
-
- ref->block_group->checksum = to_le16(checksum);
+ uint16_t cs;
+ cs = ext4_fs_bg_checksum(&ref->fs->sb, ref->index,
+ ref->block_group);
+ ref->block_group->checksum = to_le16(cs);
/* Mark block dirty for writing changes to physical device */
- ref->block.dirty = true;
+ ext4_trans_set_block_dirty(ref->block.buf);
}
/* Put back block, that contains block group descriptor */
to_le32(ext4_inode_get_generation(inode_ref->inode));
/* Preparation: temporarily set bg checksum to 0 */
- orig_checksum = ext4_inode_get_checksum(sb, inode_ref->inode);
- ext4_inode_set_checksum(sb, inode_ref->inode, 0);
+ orig_checksum = ext4_inode_get_csum(sb, inode_ref->inode);
+ ext4_inode_set_csum(sb, inode_ref->inode, 0);
/* First calculate crc32 checksum against fs uuid */
checksum = ext4_crc32c(EXT4_CRC32_INIT, sb->uuid,
- sizeof(sb->uuid));
+ sizeof(sb->uuid));
/* Then calculate crc32 checksum against inode number
* and inode generation */
- checksum = ext4_crc32c(checksum, &ino_index,
- sizeof(ino_index));
- checksum = ext4_crc32c(checksum, &ino_gen,
- sizeof(ino_gen));
- /* Finally calculate crc32 checksum against
+ checksum = ext4_crc32c(checksum, &ino_index, sizeof(ino_index));
+ checksum = ext4_crc32c(checksum, &ino_gen, sizeof(ino_gen));
+ /* Finally calculate crc32 checksum against
* the entire inode */
- checksum = ext4_crc32c(checksum, inode_ref->inode,
- inode_size);
- ext4_inode_set_checksum(sb, inode_ref->inode,
- orig_checksum);
+ checksum = ext4_crc32c(checksum, inode_ref->inode, inode_size);
+ ext4_inode_set_csum(sb, inode_ref->inode, orig_checksum);
/* If inode size is not large enough to hold the
* upper 16bit of the checksum */
if (!ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_METADATA_CSUM))
return;
- ext4_inode_set_checksum(sb, inode_ref->inode,
- ext4_fs_inode_checksum(inode_ref));
+ uint32_t csum = ext4_fs_inode_checksum(inode_ref);
+ ext4_inode_set_csum(sb, inode_ref->inode, csum);
}
#if CONFIG_META_CSUM_ENABLE
if (!ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_METADATA_CSUM))
return true;
- return ext4_inode_get_checksum(sb, inode_ref->inode) ==
+ return ext4_inode_get_csum(sb, inode_ref->inode) ==
ext4_fs_inode_checksum(inode_ref);
}
#else
ext4_fsblk_t block_id =
inode_table_start + (byte_offset_in_group / block_size);
- rc = ext4_block_get(fs->bdev, &ref->block, block_id);
+ rc = ext4_trans_block_get(fs->bdev, &ref->block, block_id);
if (rc != EOK) {
return rc;
}
if (ref->dirty) {
/* Mark block dirty for writing changes to physical device */
ext4_fs_set_inode_checksum(ref);
- ref->block.dirty = true;
+ ext4_trans_set_block_dirty(ref->block.buf);
}
/* Put back block, that contains i-node */
return ext4_block_set(ref->fs->bdev, &ref->block);
}
-void ext4_fs_inode_blocks_init(struct ext4_fs *fs, struct ext4_inode_ref *inode_ref)
+void ext4_fs_inode_blocks_init(struct ext4_fs *fs,
+ struct ext4_inode_ref *inode_ref)
{
int i;
struct ext4_inode *inode = inode_ref->inode;
uint32_t ext4_fs_correspond_inode_mode(int filetype)
{
switch (filetype) {
- case EXT4_DIRENTRY_DIR:
+ case EXT4_DE_DIR:
return EXT4_INODE_MODE_DIRECTORY;
- case EXT4_DIRENTRY_REG_FILE:
+ case EXT4_DE_REG_FILE:
return EXT4_INODE_MODE_FILE;
- case EXT4_DIRENTRY_SYMLINK:
+ case EXT4_DE_SYMLINK:
return EXT4_INODE_MODE_SOFTLINK;
default:
/* FIXME: right now we only support 3 file type. */
bool is_dir;
uint16_t inode_size = ext4_get16(&fs->sb, inode_size);
- is_dir = (filetype == EXT4_DIRENTRY_DIR);
+ is_dir = (filetype == EXT4_DE_DIR);
/* Allocate inode by allocation algorithm */
uint32_t index;
}
ext4_inode_set_mode(&fs->sb, inode, mode);
- ext4_inode_set_links_count(inode, 0);
+ ext4_inode_set_links_cnt(inode, 0);
ext4_inode_set_uid(inode, 0);
ext4_inode_set_gid(inode, 0);
ext4_inode_set_size(inode, 0);
ext4_inode_set_access_time(inode, 0);
ext4_inode_set_change_inode_time(inode, 0);
- ext4_inode_set_modification_time(inode, 0);
- ext4_inode_set_deletion_time(inode, 0);
+ ext4_inode_set_modif_time(inode, 0);
+ ext4_inode_set_del_time(inode, 0);
ext4_inode_set_blocks_count(&fs->sb, inode, 0);
ext4_inode_set_flags(inode, 0);
ext4_inode_set_generation(inode, 0);
- if (inode_size > EXT4_GOOD_OLD_INODE_SIZE)
- ext4_inode_set_extra_isize(inode,
- sizeof(struct ext4_inode) -
- offsetof(struct ext4_inode,
- extra_isize));
+ if (inode_size > EXT4_GOOD_OLD_INODE_SIZE) {
+ uint16_t off = offsetof(struct ext4_inode, extra_isize);
+ uint16_t size = sizeof(struct ext4_inode) - off;
+ ext4_inode_set_extra_isize(inode, size);
+ }
/* Reset blocks array. For symbolic link inode, just
* fill in blocks with 0 */
for (int i = 0; i < EXT4_INODE_BLOCKS; i++)
inode->blocks[i] = 0;
- } else
+ } else {
ext4_fs_inode_blocks_init(fs, inode_ref);
+ }
inode_ref->dirty = true;
/* 2) Double indirect */
fblock = ext4_inode_get_indirect_block(inode_ref->inode, 1);
if (fblock != 0) {
- int rc = ext4_block_get(fs->bdev, &block, fblock);
+ int rc = ext4_trans_block_get(fs->bdev, &block, fblock);
if (rc != EOK)
return rc;
fblock = ext4_inode_get_indirect_block(inode_ref->inode, 2);
if (fblock == 0)
goto finish;
- rc = ext4_block_get(fs->bdev, &block, fblock);
+ rc = ext4_trans_block_get(fs->bdev, &block, fblock);
if (rc != EOK)
return rc;
if (ind_block == 0)
continue;
- rc = ext4_block_get(fs->bdev, &subblock,
+ rc = ext4_trans_block_get(fs->bdev, &subblock,
ind_block);
if (rc != EOK) {
ext4_block_set(fs->bdev, &block);
if (current_block == 0)
return EOK;
- int rc = ext4_block_get(fs->bdev, &block, current_block);
+ int rc = ext4_trans_block_get(fs->bdev, &block, current_block);
if (rc != EOK)
return rc;
/* Set zero if physical data block address found */
if (level == 1) {
((uint32_t *)block.data)[offset_in_block] = to_le32(0);
- block.dirty = true;
+ ext4_trans_set_block_dirty(block.buf);
}
rc = ext4_block_set(fs->bdev, &block);
{
struct ext4_sblock *sb = &inode_ref->fs->sb;
uint32_t i;
+ int r;
/* Check flags, if i-node can be truncated */
if (!ext4_inode_can_truncate(sb, inode_ref->inode))
if (old_size < new_size)
return EINVAL;
- if (ext4_inode_is_type(sb, inode_ref->inode, EXT4_INODE_MODE_SOFTLINK)
- && old_size < sizeof(inode_ref->inode->blocks)
- && !ext4_inode_get_blocks_count(sb, inode_ref->inode)) {
- char *content = (char *)inode_ref->inode->blocks;
- memset(content + new_size, 0,
- sizeof(inode_ref->inode->blocks) - new_size);
+ bool v;
+ v = ext4_inode_is_type(sb, inode_ref->inode, EXT4_INODE_MODE_SOFTLINK);
+ if (v && old_size < sizeof(inode_ref->inode->blocks) &&
+ !ext4_inode_get_blocks_count(sb, inode_ref->inode)) {
+ char *content = (char *)inode_ref->inode->blocks + new_size;
+ memset(content , 0, sizeof(inode_ref->inode->blocks) - new_size);
ext4_inode_set_size(inode_ref->inode, new_size);
inode_ref->dirty = true;
/* Compute how many blocks will be released */
uint32_t block_size = ext4_sb_get_block_size(sb);
- uint32_t new_blocks_count = (new_size + block_size - 1) /
- block_size;
- uint32_t old_blocks_count = (old_size + block_size - 1) /
- block_size;
- uint32_t diff_blocks_count = old_blocks_count - new_blocks_count;
+ uint32_t new_blocks_cnt = (new_size + block_size - 1) / block_size;
+ uint32_t old_blocks_cnt = (old_size + block_size - 1) / block_size;
+ uint32_t diff_blocks_cnt = old_blocks_cnt - new_blocks_cnt;
#if CONFIG_EXTENT_ENABLE
if ((ext4_sb_feature_incom(sb, EXT4_FINCOM_EXTENTS)) &&
(ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_EXTENTS))) {
/* Extents require special operation */
- if (diff_blocks_count) {
- int rc = ext4_extent_remove_space(inode_ref,
- new_blocks_count, EXT_MAX_BLOCKS);
- if (rc != EOK)
- return rc;
+ if (diff_blocks_cnt) {
+ r = ext4_extent_remove_space(inode_ref, new_blocks_cnt,
+ EXT_MAX_BLOCKS);
+ if (r != EOK)
+ return r;
}
} else
/* Starting from 1 because of logical blocks are numbered from 0
*/
- for (i = 0; i < diff_blocks_count; ++i) {
- int rc = ext4_fs_release_inode_block(
- inode_ref, new_blocks_count + i);
- if (rc != EOK)
- return rc;
+ for (i = 0; i < diff_blocks_cnt; ++i) {
+ r = ext4_fs_release_inode_block(inode_ref,
+ new_blocks_cnt + i);
+ if (r != EOK)
+ return r;
}
}
*/
ext4_fsblk_t ext4_fs_inode_to_goal_block(struct ext4_inode_ref *inode_ref)
{
- uint32_t group_inodes =
- ext4_get32(&inode_ref->fs->sb, inodes_per_group);
- return (inode_ref->index - 1) / group_inodes;
+ uint32_t grp_inodes = ext4_get32(&inode_ref->fs->sb, inodes_per_group);
+ return (inode_ref->index - 1) / grp_inodes;
}
/**@brief Compute 'goal' for allocation algorithm (For blockmap).
* @return error code
*/
int ext4_fs_indirect_find_goal(struct ext4_inode_ref *inode_ref,
- ext4_fsblk_t *goal)
+ ext4_fsblk_t *goal)
{
+ int r;
struct ext4_sblock *sb = &inode_ref->fs->sb;
*goal = 0;
uint64_t inode_size = ext4_inode_get_size(sb, inode_ref->inode);
uint32_t block_size = ext4_sb_get_block_size(sb);
- uint32_t inode_block_count = inode_size / block_size;
+ uint32_t iblock_cnt = inode_size / block_size;
if (inode_size % block_size != 0)
- inode_block_count++;
+ iblock_cnt++;
/* If inode has some blocks, get last block address + 1 */
- if (inode_block_count > 0) {
- int rc = ext4_fs_get_inode_data_block_index(
- inode_ref, inode_block_count - 1, goal, false);
- if (rc != EOK)
- return rc;
+ if (iblock_cnt > 0) {
+ r = ext4_fs_get_inode_dblk_idx(inode_ref, iblock_cnt - 1,
+ goal, false);
+ if (r != EOK)
+ return r;
if (*goal != 0) {
(*goal)++;
- return rc;
+ return r;
}
/* If goal == 0, sparse file -> continue */
/* Identify block group of inode */
- uint32_t inodes_per_group = ext4_get32(sb, inodes_per_group);
- uint32_t block_group = (inode_ref->index - 1) / inodes_per_group;
+ uint32_t inodes_per_bg = ext4_get32(sb, inodes_per_group);
+ uint32_t block_group = (inode_ref->index - 1) / inodes_per_bg;
block_size = ext4_sb_get_block_size(sb);
/* Load block group reference */
struct ext4_block_group_ref bg_ref;
- int rc =
- ext4_fs_get_block_group_ref(inode_ref->fs, block_group, &bg_ref);
- if (rc != EOK)
- return rc;
+ r = ext4_fs_get_block_group_ref(inode_ref->fs, block_group, &bg_ref);
+ if (r != EOK)
+ return r;
+
+ struct ext4_bgroup *bg = bg_ref.block_group;
/* Compute indexes */
- uint32_t block_group_count = ext4_block_group_cnt(sb);
- ext4_fsblk_t inode_table_first_block =
- ext4_bg_get_inode_table_first_block(bg_ref.block_group, sb);
- uint16_t inode_table_item_size = ext4_get16(sb, inode_size);
- uint32_t inode_table_bytes;
+ uint32_t bg_count = ext4_block_group_cnt(sb);
+ ext4_fsblk_t itab_first_block = ext4_bg_get_inode_table_first_block(bg, sb);
+ uint16_t itab_item_size = ext4_get16(sb, inode_size);
+ uint32_t itab_bytes;
/* Check for last block group */
- if (block_group < block_group_count - 1) {
- inode_table_bytes = inodes_per_group * inode_table_item_size;
+ if (block_group < bg_count - 1) {
+ itab_bytes = inodes_per_bg * itab_item_size;
} else {
/* Last block group could be smaller */
- uint32_t inodes_count_total = ext4_get32(sb, inodes_count);
+ uint32_t inodes_cnt = ext4_get32(sb, inodes_count);
- inode_table_bytes =
- (inodes_count_total -
- ((block_group_count - 1) * inodes_per_group)) *
- inode_table_item_size;
+ itab_bytes = (inodes_cnt - ((bg_count - 1) * inodes_per_bg));
+ itab_bytes *= itab_item_size;
}
- ext4_fsblk_t inode_table_blocks = inode_table_bytes / block_size;
+ ext4_fsblk_t inode_table_blocks = itab_bytes / block_size;
- if (inode_table_bytes % block_size)
+ if (itab_bytes % block_size)
inode_table_blocks++;
- *goal = inode_table_first_block + inode_table_blocks;
+ *goal = itab_first_block + inode_table_blocks;
return ext4_fs_put_block_group_ref(&bg_ref);
}
-static int ext4_fs_get_inode_data_block_idx(struct ext4_inode_ref *inode_ref,
+static int ext4_fs_get_inode_dblk_idx_internal(struct ext4_inode_ref *inode_ref,
uint64_t iblock, ext4_fsblk_t *fblock,
bool extent_create,
bool support_unwritten __unused)
ext4_fsblk_t current_fsblk;
int rc = ext4_extent_get_blocks(inode_ref, iblock, 1,
- ¤t_fsblk, extent_create, NULL);
+ ¤t_fsblk, extent_create, NULL);
if (rc != EOK)
return rc;
}
/* Determine indirection level of the target block */
- unsigned int level = 0;
+ unsigned int l = 0;
unsigned int i;
for (i = 1; i < 4; i++) {
if (iblock < fs->inode_block_limits[i]) {
- level = i;
+ l = i;
break;
}
}
- if (level == 0)
+ if (l == 0)
return EIO;
/* Compute offsets for the topmost level */
- uint64_t block_offset_in_level =
- iblock - fs->inode_block_limits[level - 1];
- current_block = ext4_inode_get_indirect_block(inode, level - 1);
- uint32_t offset_in_block =
- block_offset_in_level / fs->inode_blocks_per_level[level - 1];
+ uint64_t blk_off_in_lvl = iblock - fs->inode_block_limits[l - 1];
+ current_block = ext4_inode_get_indirect_block(inode, l - 1);
+ uint32_t off_in_blk = blk_off_in_lvl / fs->inode_blocks_per_level[l - 1];
/* Sparse file */
if (current_block == 0) {
* Navigate through other levels, until we find the block number
* or find null reference meaning we are dealing with sparse file
*/
- while (level > 0) {
+ while (l > 0) {
/* Load indirect block */
- int rc = ext4_block_get(fs->bdev, &block, current_block);
+ int rc = ext4_trans_block_get(fs->bdev, &block, current_block);
if (rc != EOK)
return rc;
/* Read block address from indirect block */
current_block =
- to_le32(((uint32_t *)block.data)[offset_in_block]);
+ to_le32(((uint32_t *)block.data)[off_in_blk]);
/* Put back indirect block untouched */
rc = ext4_block_set(fs->bdev, &block);
}
/* Jump to the next level */
- level--;
+ l--;
/* Termination condition - we have address of data block loaded
*/
- if (level == 0)
+ if (l == 0)
break;
/* Visit the next level */
- block_offset_in_level %= fs->inode_blocks_per_level[level];
- offset_in_block = block_offset_in_level /
- fs->inode_blocks_per_level[level - 1];
+ blk_off_in_lvl %= fs->inode_blocks_per_level[l];
+ off_in_blk = blk_off_in_lvl / fs->inode_blocks_per_level[l - 1];
}
*fblock = current_block;
}
-int ext4_fs_get_inode_data_block_index(struct ext4_inode_ref *inode_ref,
- uint64_t iblock, ext4_fsblk_t *fblock,
- bool support_unwritten)
+int ext4_fs_get_inode_dblk_idx(struct ext4_inode_ref *inode_ref,
+ uint64_t iblock, ext4_fsblk_t *fblock,
+ bool support_unwritten)
{
- return ext4_fs_get_inode_data_block_idx(inode_ref, iblock, fblock,
- false, support_unwritten);
+ return ext4_fs_get_inode_dblk_idx_internal(inode_ref, iblock, fblock,
+ false, support_unwritten);
}
-int ext4_fs_init_inode_data_block_index(struct ext4_inode_ref *inode_ref,
- uint64_t iblock, ext4_fsblk_t *fblock)
+int ext4_fs_init_inode_dblk_idx(struct ext4_inode_ref *inode_ref,
+ uint64_t iblock, ext4_fsblk_t *fblock)
{
- return ext4_fs_get_inode_data_block_idx(inode_ref, iblock, fblock,
- true, true);
+ return ext4_fs_get_inode_dblk_idx_internal(inode_ref, iblock, fblock,
+ true, true);
}
static int ext4_fs_set_inode_data_block_index(struct ext4_inode_ref *inode_ref,
}
/* Determine the indirection level needed to get the desired block */
- unsigned int level = 0;
+ unsigned int l = 0;
unsigned int i;
for (i = 1; i < 4; i++) {
if (iblock < fs->inode_block_limits[i]) {
- level = i;
+ l = i;
break;
}
}
- if (level == 0)
+ if (l == 0)
return EIO;
uint32_t block_size = ext4_sb_get_block_size(&fs->sb);
/* Compute offsets for the topmost level */
- uint64_t block_offset_in_level =
- iblock - fs->inode_block_limits[level - 1];
+ uint64_t blk_off_in_lvl = iblock - fs->inode_block_limits[l - 1];
ext4_fsblk_t current_block =
- ext4_inode_get_indirect_block(inode_ref->inode, level - 1);
- uint32_t offset_in_block =
- block_offset_in_level / fs->inode_blocks_per_level[level - 1];
+ ext4_inode_get_indirect_block(inode_ref->inode, l - 1);
+ uint32_t off_in_blk = blk_off_in_lvl / fs->inode_blocks_per_level[l - 1];
- ext4_fsblk_t new_block_addr;
+ ext4_fsblk_t new_blk;
struct ext4_block block;
struct ext4_block new_block;
if (rc != EOK)
return rc;
- rc = ext4_balloc_alloc_block(inode_ref,
- goal,
- &new_block_addr);
+ rc = ext4_balloc_alloc_block(inode_ref, goal, &new_blk);
if (rc != EOK)
return rc;
/* Update i-node */
- ext4_inode_set_indirect_block(inode_ref->inode, level - 1,
- (uint32_t)new_block_addr);
+ ext4_inode_set_indirect_block(inode_ref->inode, l - 1, new_blk);
inode_ref->dirty = true;
/* Load newly allocated block */
- rc = ext4_block_get_noread(fs->bdev, &new_block, new_block_addr);
+ rc = ext4_trans_block_get_noread(fs->bdev, &new_block, new_blk);
if (rc != EOK) {
- ext4_balloc_free_block(inode_ref, new_block_addr);
+ ext4_balloc_free_block(inode_ref, new_blk);
return rc;
}
/* Initialize new block */
memset(new_block.data, 0, block_size);
- new_block.dirty = true;
+ ext4_trans_set_block_dirty(new_block.buf);
/* Put back the allocated block */
rc = ext4_block_set(fs->bdev, &new_block);
if (rc != EOK)
return rc;
- current_block = new_block_addr;
+ current_block = new_blk;
}
/*
* Navigate through other levels, until we find the block number
* or find null reference meaning we are dealing with sparse file
*/
- while (level > 0) {
- int rc = ext4_block_get(fs->bdev, &block, current_block);
+ while (l > 0) {
+ int rc = ext4_trans_block_get(fs->bdev, &block, current_block);
if (rc != EOK)
return rc;
- current_block =
- to_le32(((uint32_t *)block.data)[offset_in_block]);
-
- if ((level > 1) && (current_block == 0)) {
+ current_block = to_le32(((uint32_t *)block.data)[off_in_blk]);
+ if ((l > 1) && (current_block == 0)) {
ext4_fsblk_t goal;
rc = ext4_fs_indirect_find_goal(inode_ref, &goal);
if (rc != EOK) {
/* Allocate new block */
rc =
- ext4_balloc_alloc_block(inode_ref, goal, &new_block_addr);
+ ext4_balloc_alloc_block(inode_ref, goal, &new_blk);
if (rc != EOK) {
ext4_block_set(fs->bdev, &block);
return rc;
}
/* Load newly allocated block */
- rc = ext4_block_get_noread(fs->bdev, &new_block,
- new_block_addr);
+ rc = ext4_trans_block_get_noread(fs->bdev, &new_block,
+ new_blk);
if (rc != EOK) {
ext4_block_set(fs->bdev, &block);
/* Initialize allocated block */
memset(new_block.data, 0, block_size);
- new_block.dirty = true;
+ ext4_trans_set_block_dirty(new_block.buf);
rc = ext4_block_set(fs->bdev, &new_block);
if (rc != EOK) {
}
/* Write block address to the parent */
- ((uint32_t *)block.data)[offset_in_block] =
- to_le32((uint32_t)new_block_addr);
- block.dirty = true;
- current_block = new_block_addr;
+ uint32_t * p = (uint32_t * )block.data;
+ p[off_in_blk] = to_le32((uint32_t)new_blk);
+ ext4_trans_set_block_dirty(block.buf);
+ current_block = new_blk;
}
/* Will be finished, write the fblock address */
- if (level == 1) {
- ((uint32_t *)block.data)[offset_in_block] =
- to_le32((uint32_t)fblock);
- block.dirty = true;
+ if (l == 1) {
+ uint32_t * p = (uint32_t * )block.data;
+ p[off_in_blk] = to_le32((uint32_t)fblock);
+ ext4_trans_set_block_dirty(block.buf);
}
rc = ext4_block_set(fs->bdev, &block);
if (rc != EOK)
return rc;
- level--;
+ l--;
/*
* If we are on the last level, break here as
* there is no next level to visit
*/
- if (level == 0)
+ if (l == 0)
break;
/* Visit the next level */
- block_offset_in_level %= fs->inode_blocks_per_level[level];
- offset_in_block = block_offset_in_level /
- fs->inode_blocks_per_level[level - 1];
+ blk_off_in_lvl %= fs->inode_blocks_per_level[l];
+ off_in_blk = blk_off_in_lvl / fs->inode_blocks_per_level[l - 1];
}
return EOK;
}
-int ext4_fs_append_inode_block(struct ext4_inode_ref *inode_ref,
- ext4_fsblk_t *fblock, uint32_t *iblock)
+int ext4_fs_append_inode_dblk(struct ext4_inode_ref *inode_ref,
+ ext4_fsblk_t *fblock, uint32_t *iblock)
{
#if CONFIG_EXTENT_ENABLE
/* Handle extents separately */
struct ext4_sblock *sb = &inode_ref->fs->sb;
uint64_t inode_size = ext4_inode_get_size(sb, inode_ref->inode);
uint32_t block_size = ext4_sb_get_block_size(sb);
- *iblock = (inode_size + block_size - 1) /
- block_size;
+ *iblock = (inode_size + block_size - 1) / block_size;
rc = ext4_extent_get_blocks(inode_ref, *iblock, 1,
- ¤t_fsblk, true, NULL);
-
+ ¤t_fsblk, true, NULL);
*fblock = current_fsblk;
ext4_assert(*fblock);
- ext4_inode_set_size(inode_ref->inode,
- inode_size + block_size);
+ ext4_inode_set_size(inode_ref->inode, inode_size + block_size);
inode_ref->dirty = true;
void ext4_fs_inode_links_count_inc(struct ext4_inode_ref *inode_ref)
{
uint16_t link;
-
- link = ext4_inode_get_links_count(inode_ref->inode);
+ bool is_dx;
+ link = ext4_inode_get_links_cnt(inode_ref->inode);
link++;
- ext4_inode_set_links_count(inode_ref->inode, link);
+ ext4_inode_set_links_cnt(inode_ref->inode, link);
- bool is_dx =
- ext4_sb_feature_com(&inode_ref->fs->sb, EXT4_FCOM_DIR_INDEX) &&
- ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_INDEX);
+ is_dx = ext4_sb_feature_com(&inode_ref->fs->sb, EXT4_FCOM_DIR_INDEX) &&
+ ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_INDEX);
if (is_dx && link > 1) {
if (link >= EXT4_LINK_MAX || link == 2) {
- ext4_inode_set_links_count(inode_ref->inode, 1);
+ ext4_inode_set_links_cnt(inode_ref->inode, 1);
- uint32_t v =
- ext4_get32(&inode_ref->fs->sb, features_read_only);
+ uint32_t v;
+ v = ext4_get32(&inode_ref->fs->sb, features_read_only);
v |= EXT4_FRO_COM_DIR_NLINK;
ext4_set32(&inode_ref->fs->sb, features_read_only, v);
}
void ext4_fs_inode_links_count_dec(struct ext4_inode_ref *inode_ref)
{
- uint16_t links = ext4_inode_get_links_count(inode_ref->inode);
+ uint16_t links = ext4_inode_get_links_cnt(inode_ref->inode);
if (!ext4_inode_is_type(&inode_ref->fs->sb, inode_ref->inode,
EXT4_INODE_MODE_DIRECTORY)) {
if (links > 0)
- ext4_inode_set_links_count(inode_ref->inode, links - 1);
+ ext4_inode_set_links_cnt(inode_ref->inode, links - 1);
return;
}
if (links > 2)
- ext4_inode_set_links_count(inode_ref->inode, links - 1);
+ ext4_inode_set_links_cnt(inode_ref->inode, links - 1);
}
/**
projects / lwext4.git / blobdiff