sb->free_blocks = cpu_to_le32(le32_to_cpu(sb->free_blocks) + 1);
}
-static inline void ext4fs_bg_free_inodes_inc(struct ext2_block_group *bg)
+static inline void ext4fs_bg_free_inodes_inc
+ (struct ext2_block_group *bg, const struct ext_filesystem *fs)
{
- bg->free_inodes = cpu_to_le16(le16_to_cpu(bg->free_inodes) + 1);
+ uint32_t free_inodes = le16_to_cpu(bg->free_inodes);
+ if (fs->gdsize == 64)
+ free_inodes += le16_to_cpu(bg->free_inodes_high) << 16;
+ free_inodes++;
+
+ bg->free_inodes = cpu_to_le16(free_inodes & 0xffff);
+ if (fs->gdsize == 64)
+ bg->free_inodes_high = cpu_to_le16(free_inodes >> 16);
}
-static inline void ext4fs_bg_free_blocks_inc(struct ext2_block_group *bg)
+static inline void ext4fs_bg_free_blocks_inc
+ (struct ext2_block_group *bg, const struct ext_filesystem *fs)
{
- bg->free_blocks = cpu_to_le16(le16_to_cpu(bg->free_blocks) + 1);
+ uint32_t free_blocks = le16_to_cpu(bg->free_blocks);
+ if (fs->gdsize == 64)
+ free_blocks += le16_to_cpu(bg->free_blocks_high) << 16;
+ free_blocks++;
+
+ bg->free_blocks = cpu_to_le16(free_blocks & 0xffff);
+ if (fs->gdsize == 64)
+ bg->free_blocks_high = cpu_to_le16(free_blocks >> 16);
}
static void ext4fs_update(void)
short i;
ext4fs_update_journal();
struct ext_filesystem *fs = get_fs();
+ struct ext2_block_group *bgd = NULL;
/* update super block */
put_ext4((uint64_t)(SUPERBLOCK_SIZE),
(struct ext2_sblock *)fs->sb, (uint32_t)SUPERBLOCK_SIZE);
- /* update block groups */
+ /* update block bitmaps */
for (i = 0; i < fs->no_blkgrp; i++) {
- fs->bgd[i].bg_checksum = cpu_to_le16(ext4fs_checksum_update(i));
- put_ext4((uint64_t)le32_to_cpu(fs->bgd[i].block_id) * fs->blksz,
+ bgd = ext4fs_get_group_descriptor(fs, i);
+ bgd->bg_checksum = cpu_to_le16(ext4fs_checksum_update(i));
+ uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs);
+ put_ext4(b_bitmap_blk * fs->blksz,
fs->blk_bmaps[i], fs->blksz);
}
- /* update inode table groups */
+ /* update inode bitmaps */
for (i = 0; i < fs->no_blkgrp; i++) {
- put_ext4((uint64_t)le32_to_cpu(fs->bgd[i].inode_id) * fs->blksz,
+ bgd = ext4fs_get_group_descriptor(fs, i);
+ uint64_t i_bitmap_blk = ext4fs_bg_get_inode_id(bgd, fs);
+ put_ext4(i_bitmap_blk * fs->blksz,
fs->inode_bmaps[i], fs->blksz);
}
int ext4fs_get_bgdtable(void)
{
int status;
- int grp_desc_size;
struct ext_filesystem *fs = get_fs();
- grp_desc_size = sizeof(struct ext2_block_group);
- fs->no_blk_pergdt = (fs->no_blkgrp * grp_desc_size) / fs->blksz;
- if ((fs->no_blkgrp * grp_desc_size) % fs->blksz)
- fs->no_blk_pergdt++;
+ int gdsize_total = ROUND(fs->no_blkgrp * fs->gdsize, fs->blksz);
+ fs->no_blk_pergdt = gdsize_total / fs->blksz;
/* allocate memory for gdtable */
- fs->gdtable = zalloc(fs->blksz * fs->no_blk_pergdt);
+ fs->gdtable = zalloc(gdsize_total);
if (!fs->gdtable)
return -ENOMEM;
/* read the group descriptor table */
printf("No memory\n");
return;
}
- /* get block group descriptor table */
- bgd = (struct ext2_block_group *)fs->gdtable;
/* deleting the single indirect block associated with inode */
if (inode->b.blocks.indir_block != 0) {
bg_idx--;
}
ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx], bg_idx);
- ext4fs_bg_free_blocks_inc(&bgd[bg_idx]);
+ /* get block group descriptor table */
+ bgd = ext4fs_get_group_descriptor(fs, bg_idx);
+ ext4fs_bg_free_blocks_inc(bgd, fs);
ext4fs_sb_free_blocks_inc(fs->sb);
/* journal backup */
if (prev_bg_bmap_idx != bg_idx) {
+ uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs);
status = ext4fs_devread(
- (lbaint_t)le32_to_cpu(bgd[bg_idx].block_id) *
- fs->sect_perblk, 0, fs->blksz,
- journal_buffer);
+ b_bitmap_blk * fs->sect_perblk,
+ 0, fs->blksz, journal_buffer);
if (status == 0)
goto fail;
- if (ext4fs_log_journal
- (journal_buffer, le32_to_cpu(bgd[bg_idx].block_id)))
+ if (ext4fs_log_journal(journal_buffer, b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
printf("No memory\n");
return;
}
- /* get the block group descriptor table */
- bgd = (struct ext2_block_group *)fs->gdtable;
if (inode->b.blocks.double_indir_block != 0) {
di_buffer = zalloc(fs->blksz);
if (!remainder)
bg_idx--;
}
+ /* get block group descriptor table */
+ bgd = ext4fs_get_group_descriptor(fs, bg_idx);
ext4fs_reset_block_bmap(le32_to_cpu(*di_buffer),
fs->blk_bmaps[bg_idx], bg_idx);
di_buffer++;
- ext4fs_bg_free_blocks_inc(&bgd[bg_idx]);
+ ext4fs_bg_free_blocks_inc(bgd, fs);
ext4fs_sb_free_blocks_inc(fs->sb);
/* journal backup */
if (prev_bg_bmap_idx != bg_idx) {
- status = ext4fs_devread(
- (lbaint_t)le32_to_cpu(bgd[bg_idx].block_id)
+ uint64_t b_bitmap_blk =
+ ext4fs_bg_get_block_id(bgd, fs);
+ status = ext4fs_devread(b_bitmap_blk
* fs->sect_perblk, 0,
fs->blksz,
journal_buffer);
goto fail;
if (ext4fs_log_journal(journal_buffer,
- le32_to_cpu(bgd[bg_idx].block_id)))
+ b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
if (!remainder)
bg_idx--;
}
+ /* get block group descriptor table */
+ bgd = ext4fs_get_group_descriptor(fs, bg_idx);
ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx], bg_idx);
- ext4fs_bg_free_blocks_inc(&bgd[bg_idx]);
+ ext4fs_bg_free_blocks_inc(bgd, fs);
ext4fs_sb_free_blocks_inc(fs->sb);
/* journal backup */
if (prev_bg_bmap_idx != bg_idx) {
- memset(journal_buffer, '\0', fs->blksz);
- status = ext4fs_devread((lbaint_t)le32_to_cpu(bgd[bg_idx].block_id) *
- fs->sect_perblk, 0, fs->blksz,
- journal_buffer);
+ uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs);
+ status = ext4fs_devread(b_bitmap_blk * fs->sect_perblk,
+ 0, fs->blksz, journal_buffer);
if (status == 0)
goto fail;
- if (ext4fs_log_journal(journal_buffer,
- le32_to_cpu(bgd[bg_idx].block_id)))
+ if (ext4fs_log_journal(journal_buffer, b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
printf("No memory\n");
return;
}
- /* get block group descriptor table */
- bgd = (struct ext2_block_group *)fs->gdtable;
if (inode->b.blocks.triple_indir_block != 0) {
tigp_buffer = zalloc(fs->blksz);
bg_idx);
tip_buffer++;
- ext4fs_bg_free_blocks_inc(&bgd[bg_idx]);
+ /* get block group descriptor table */
+ bgd = ext4fs_get_group_descriptor(fs, bg_idx);
+ ext4fs_bg_free_blocks_inc(bgd, fs);
ext4fs_sb_free_blocks_inc(fs->sb);
/* journal backup */
if (prev_bg_bmap_idx != bg_idx) {
+ uint64_t b_bitmap_blk =
+ ext4fs_bg_get_block_id(bgd, fs);
status =
ext4fs_devread(
- (lbaint_t)le32_to_cpu(bgd[bg_idx].block_id) *
+ b_bitmap_blk *
fs->sect_perblk, 0,
fs->blksz,
journal_buffer);
goto fail;
if (ext4fs_log_journal(journal_buffer,
- le32_to_cpu(bgd[bg_idx].block_id)))
+ b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
fs->blk_bmaps[bg_idx], bg_idx);
tigp_buffer++;
- ext4fs_bg_free_blocks_inc(&bgd[bg_idx]);
+ /* get block group descriptor table */
+ bgd = ext4fs_get_group_descriptor(fs, bg_idx);
+ ext4fs_bg_free_blocks_inc(bgd, fs);
ext4fs_sb_free_blocks_inc(fs->sb);
/* journal backup */
if (prev_bg_bmap_idx != bg_idx) {
+ uint64_t b_bitmap_blk =
+ ext4fs_bg_get_block_id(bgd, fs);
memset(journal_buffer, '\0', fs->blksz);
- status =
- ext4fs_devread(
- (lbaint_t)le32_to_cpu(bgd[bg_idx].block_id) *
- fs->sect_perblk, 0,
- fs->blksz, journal_buffer);
+ status = ext4fs_devread(b_bitmap_blk *
+ fs->sect_perblk, 0,
+ fs->blksz,
+ journal_buffer);
if (status == 0)
goto fail;
if (ext4fs_log_journal(journal_buffer,
- le32_to_cpu(bgd[bg_idx].block_id)))
+ b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
bg_idx--;
}
ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx], bg_idx);
- ext4fs_bg_free_blocks_inc(&bgd[bg_idx]);
+ /* get block group descriptor table */
+ bgd = ext4fs_get_group_descriptor(fs, bg_idx);
+ ext4fs_bg_free_blocks_inc(bgd, fs);
ext4fs_sb_free_blocks_inc(fs->sb);
/* journal backup */
if (prev_bg_bmap_idx != bg_idx) {
- memset(journal_buffer, '\0', fs->blksz);
- status = ext4fs_devread(
- (lbaint_t)le32_to_cpu(bgd[bg_idx].block_id) *
- fs->sect_perblk, 0, fs->blksz,
- journal_buffer);
+ uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs);
+ status = ext4fs_devread(b_bitmap_blk * fs->sect_perblk,
+ 0, fs->blksz, journal_buffer);
if (status == 0)
goto fail;
- if (ext4fs_log_journal(journal_buffer,
- le32_to_cpu(bgd[bg_idx].block_id)))
+ if (ext4fs_log_journal(journal_buffer, b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
char *journal_buffer = zalloc(fs->blksz);
if (!journal_buffer)
return -ENOMEM;
- /* get the block group descriptor table */
- bgd = (struct ext2_block_group *)fs->gdtable;
status = ext4fs_read_inode(ext4fs_root, inodeno, &inode);
if (status == 0)
goto fail;
no_blocks++;
if (le32_to_cpu(inode.flags) & EXT4_EXTENTS_FL) {
- struct ext2fs_node *node_inode =
- zalloc(sizeof(struct ext2fs_node));
- if (!node_inode)
- goto fail;
- node_inode->data = ext4fs_root;
- node_inode->ino = inodeno;
- node_inode->inode_read = 0;
- memcpy(&(node_inode->inode), &inode, sizeof(struct ext2_inode));
-
- for (i = 0; i < no_blocks; i++) {
- blknr = read_allocated_block(&(node_inode->inode), i);
- bg_idx = blknr / blk_per_grp;
- if (fs->blksz == 1024) {
- remainder = blknr % blk_per_grp;
- if (!remainder)
- bg_idx--;
- }
- ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx],
- bg_idx);
- debug("EXT4_EXTENTS Block releasing %ld: %d\n",
- blknr, bg_idx);
-
- ext4fs_bg_free_blocks_inc(&bgd[bg_idx]);
- ext4fs_sb_free_blocks_inc(fs->sb);
-
- /* journal backup */
- if (prev_bg_bmap_idx != bg_idx) {
- 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,
- le32_to_cpu(bgd[bg_idx].block_id)))
- goto fail;
- prev_bg_bmap_idx = bg_idx;
- }
- }
- if (node_inode) {
- free(node_inode);
- node_inode = NULL;
- }
+ /* FIXME delete extent index blocks, i.e. eh_depth >= 1 */
+ struct ext4_extent_header *eh =
+ (struct ext4_extent_header *)
+ inode.b.blocks.dir_blocks;
+ debug("del: dep=%d entries=%d\n", eh->eh_depth, eh->eh_entries);
} else {
-
delete_single_indirect_block(&inode);
delete_double_indirect_block(&inode);
delete_triple_indirect_block(&inode);
+ }
- /* read the block no allocated to a file */
- no_blocks = le32_to_cpu(inode.size) / fs->blksz;
- if (le32_to_cpu(inode.size) % fs->blksz)
- no_blocks++;
- for (i = 0; i < no_blocks; i++) {
- blknr = read_allocated_block(&inode, i);
- bg_idx = blknr / blk_per_grp;
- if (fs->blksz == 1024) {
- remainder = blknr % blk_per_grp;
- if (!remainder)
- bg_idx--;
- }
- ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx],
- bg_idx);
- debug("ActualB releasing %ld: %d\n", blknr, bg_idx);
+ /* release data blocks */
+ for (i = 0; i < no_blocks; i++) {
+ blknr = read_allocated_block(&inode, i);
+ if (blknr == 0)
+ continue;
+ if (blknr < 0)
+ goto fail;
+ bg_idx = blknr / blk_per_grp;
+ if (fs->blksz == 1024) {
+ remainder = blknr % blk_per_grp;
+ if (!remainder)
+ bg_idx--;
+ }
+ ext4fs_reset_block_bmap(blknr, fs->blk_bmaps[bg_idx],
+ bg_idx);
+ debug("EXT4 Block releasing %ld: %d\n", blknr, bg_idx);
- ext4fs_bg_free_blocks_inc(&bgd[bg_idx]);
- ext4fs_sb_free_blocks_inc(fs->sb);
- /* journal backup */
- if (prev_bg_bmap_idx != bg_idx) {
- memset(journal_buffer, '\0', fs->blksz);
- 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,
- le32_to_cpu(bgd[bg_idx].block_id)))
- goto fail;
- prev_bg_bmap_idx = bg_idx;
- }
+ /* get block group descriptor table */
+ bgd = ext4fs_get_group_descriptor(fs, bg_idx);
+ ext4fs_bg_free_blocks_inc(bgd, fs);
+ ext4fs_sb_free_blocks_inc(fs->sb);
+ /* journal backup */
+ if (prev_bg_bmap_idx != bg_idx) {
+ uint64_t b_bitmap_blk = ext4fs_bg_get_block_id(bgd, fs);
+ status = ext4fs_devread(b_bitmap_blk * fs->sect_perblk,
+ 0, fs->blksz,
+ journal_buffer);
+ if (status == 0)
+ goto fail;
+ if (ext4fs_log_journal(journal_buffer, b_bitmap_blk))
+ goto fail;
+ prev_bg_bmap_idx = bg_idx;
}
}
+ /* release inode */
/* from the inode no to blockno */
inodes_per_block = fs->blksz / fs->inodesz;
ibmap_idx = inodeno / inode_per_grp;
/* get the block no */
inodeno--;
- blkno = le32_to_cpu(bgd[ibmap_idx].inode_table_id) +
+ /* get block group descriptor table */
+ bgd = ext4fs_get_group_descriptor(fs, ibmap_idx);
+ blkno = ext4fs_bg_get_inode_table_id(bgd, fs) +
(inodeno % inode_per_grp) / inodes_per_block;
/* get the offset of the inode */
read_buffer = read_buffer + blkoff;
inode_buffer = (struct ext2_inode *)read_buffer;
- memset(inode_buffer, '\0', sizeof(struct ext2_inode));
+ memset(inode_buffer, '\0', fs->inodesz);
/* write the inode to original position in inode table */
if (ext4fs_put_metadata(start_block_address, blkno))
/* update the respective inode bitmaps */
inodeno++;
ext4fs_reset_inode_bmap(inodeno, fs->inode_bmaps[ibmap_idx], ibmap_idx);
- ext4fs_bg_free_inodes_inc(&bgd[ibmap_idx]);
+ ext4fs_bg_free_inodes_inc(bgd, fs);
ext4fs_sb_free_inodes_inc(fs->sb);
/* journal backup */
memset(journal_buffer, '\0', fs->blksz);
- status = ext4fs_devread((lbaint_t)le32_to_cpu(bgd[ibmap_idx].inode_id) *
+ status = ext4fs_devread(ext4fs_bg_get_inode_id(bgd, fs) *
fs->sect_perblk, 0, fs->blksz, journal_buffer);
if (status == 0)
goto fail;
- if (ext4fs_log_journal(journal_buffer, le32_to_cpu(bgd[ibmap_idx].inode_id)))
+ if (ext4fs_log_journal(journal_buffer, ext4fs_bg_get_inode_id(bgd, fs)))
goto fail;
ext4fs_update();
/* populate fs */
fs->blksz = EXT2_BLOCK_SIZE(ext4fs_root);
- fs->inodesz = INODE_SIZE_FILESYSTEM(ext4fs_root);
fs->sect_perblk = fs->blksz >> fs->dev_desc->log2blksz;
/* get the superblock */
printf("Error in getting the block group descriptor table\n");
goto fail;
}
- fs->bgd = (struct ext2_block_group *)fs->gdtable;
/* load all the available bitmap block of the partition */
fs->blk_bmaps = zalloc(fs->no_blkgrp * sizeof(char *));
}
for (i = 0; i < fs->no_blkgrp; i++) {
- status =
- ext4fs_devread(
- (lbaint_t)le32_to_cpu(fs->bgd[i].block_id) *
+ struct ext2_block_group *bgd =
+ ext4fs_get_group_descriptor(fs, i);
+ status = ext4fs_devread(ext4fs_bg_get_block_id(bgd, fs) *
fs->sect_perblk, 0,
fs->blksz, (char *)fs->blk_bmaps[i]);
if (status == 0)
}
for (i = 0; i < fs->no_blkgrp; i++) {
- status = ext4fs_devread(
- (lbaint_t)le32_to_cpu(fs->bgd[i].inode_id) *
+ struct ext2_block_group *bgd =
+ ext4fs_get_group_descriptor(fs, i);
+ status = ext4fs_devread(ext4fs_bg_get_inode_id(bgd, fs) *
fs->sect_perblk,
0, fs->blksz,
(char *)fs->inode_bmaps[i]);
* with the blockgroups freeblocks when improper
* reboot of a linux kernel
*/
- for (i = 0; i < fs->no_blkgrp; i++)
- real_free_blocks = real_free_blocks + le16_to_cpu(fs->bgd[i].free_blocks);
- if (real_free_blocks != le32_to_cpu(fs->sb->free_blocks))
- fs->sb->free_blocks = cpu_to_le32(real_free_blocks);
+ for (i = 0; i < fs->no_blkgrp; i++) {
+ struct ext2_block_group *bgd =
+ ext4fs_get_group_descriptor(fs, i);
+ real_free_blocks = real_free_blocks +
+ ext4fs_bg_get_free_blocks(bgd, fs);
+ }
+ if (real_free_blocks != ext4fs_sb_get_free_blocks(fs->sb))
+ ext4fs_sb_set_free_blocks(fs->sb, real_free_blocks);
return 0;
fail:
free(fs->gdtable);
fs->gdtable = NULL;
- fs->bgd = NULL;
/*
* reinitiliazed the global inode and
* block bitmap first execution check variables
fs->curr_blkno = 0;
}
+/*
+ * Write data to filesystem blocks. Uses same optimization for
+ * contigous sectors as ext4fs_read_file
+ */
static int ext4fs_write_file(struct ext2_inode *file_inode,
int pos, unsigned int len, char *buf)
{
int blockend = fs->blksz;
int skipfirst = 0;
blknr = read_allocated_block(file_inode, i);
- if (blknr < 0)
+ if (blknr <= 0)
return -1;
blknr = blknr << log2_fs_blocksize;
struct ext2_sblock *sblock = &(ext4fs_root->sblock);
unsigned int inodes_per_block;
unsigned int ibmap_idx;
+ struct ext2_block_group *bgd = NULL;
struct ext_filesystem *fs = get_fs();
ALLOC_CACHE_ALIGN_BUFFER(char, filename, 256);
memset(filename, 0x00, 256);
- g_parent_inode = zalloc(sizeof(struct ext2_inode));
+ g_parent_inode = zalloc(fs->inodesz);
if (!g_parent_inode)
goto fail;
goto fail;
ibmap_idx = inodeno / le32_to_cpu(ext4fs_root->sblock.inodes_per_group);
inodeno--;
- itable_blkno = le32_to_cpu(fs->bgd[ibmap_idx].inode_table_id) +
+ bgd = ext4fs_get_group_descriptor(fs, ibmap_idx);
+ itable_blkno = ext4fs_bg_get_inode_table_id(bgd, fs) +
(inodeno % le32_to_cpu(sblock->inodes_per_group)) /
inodes_per_block;
blkoff = (inodeno % inodes_per_block) * fs->inodesz;
/* copy the file content into data blocks */
if (ext4fs_write_file(file_inode, 0, sizebytes, (char *)buffer) == -1) {
printf("Error in copying content\n");
+ /* FIXME: Deallocate data blocks */
goto fail;
}
ibmap_idx = parent_inodeno / le32_to_cpu(ext4fs_root->sblock.inodes_per_group);
parent_inodeno--;
- parent_itable_blkno = le32_to_cpu(fs->bgd[ibmap_idx].inode_table_id) +
+ bgd = ext4fs_get_group_descriptor(fs, ibmap_idx);
+ parent_itable_blkno = ext4fs_bg_get_inode_table_id(bgd, fs) +
(parent_inodeno %
le32_to_cpu(sblock->inodes_per_group)) / inodes_per_block;
blkoff = (parent_inodeno % inodes_per_block) * fs->inodesz;
if (ext4fs_log_journal(temp_ptr, parent_itable_blkno))
goto fail;
- memcpy(temp_ptr + blkoff, g_parent_inode,
- sizeof(struct ext2_inode));
+ memcpy(temp_ptr + blkoff, g_parent_inode, fs->inodesz);
if (ext4fs_put_metadata(temp_ptr, parent_itable_blkno))
goto fail;
} else {
* If parent and child fall in same inode table block
* both should be kept in 1 buffer
*/
- memcpy(temp_ptr + blkoff, g_parent_inode,
- sizeof(struct ext2_inode));
+ memcpy(temp_ptr + blkoff, g_parent_inode, fs->inodesz);
gd_index--;
if (ext4fs_put_metadata(temp_ptr, itable_blkno))
goto fail;
projects / u-boot / blobdiff