#include <common.h>
+#include <memalign.h>
#include <linux/stat.h>
#include <div64.h>
#include "ext4_common.h"
+static inline void ext4fs_sb_free_inodes_inc(struct ext2_sblock *sb)
+{
+ sb->free_inodes = cpu_to_le32(le32_to_cpu(sb->free_inodes) + 1);
+}
+
+static inline void ext4fs_sb_free_blocks_inc(struct ext2_sblock *sb)
+{
+ 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, const struct ext_filesystem *fs)
+{
+ 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, const struct ext_filesystem *fs)
+{
+ 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 = ext4fs_checksum_update(i);
- put_ext4((uint64_t)(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) (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);
}
/* update the block group descriptor table */
- put_ext4((uint64_t)(fs->gdtable_blkno * fs->blksz),
+ put_ext4((uint64_t)((uint64_t)fs->gdtable_blkno * (uint64_t)fs->blksz),
(struct ext2_block_group *)fs->gdtable,
(fs->blksz * fs->no_blk_pergdt));
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 */
{
struct ext2_block_group *bgd = NULL;
static int prev_bg_bmap_idx = -1;
- long int blknr;
+ uint32_t blknr;
int remainder;
int bg_idx;
int status;
- unsigned int blk_per_grp = ext4fs_root->sblock.blocks_per_group;
+ uint32_t blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group);
struct ext_filesystem *fs = get_fs();
char *journal_buffer = zalloc(fs->blksz);
if (!journal_buffer) {
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) {
- debug("SIPB releasing %u\n", inode->b.blocks.indir_block);
- blknr = inode->b.blocks.indir_block;
- if (fs->blksz != 1024) {
- bg_idx = blknr / blk_per_grp;
- } else {
- bg_idx = blknr / blk_per_grp;
+ blknr = le32_to_cpu(inode->b.blocks.indir_block);
+ debug("SIPB releasing %u\n", blknr);
+ 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);
- bgd[bg_idx].free_blocks++;
- fs->sb->free_blocks++;
+ /* 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) {
- status =
- ext4fs_devread((lbaint_t)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, bgd[bg_idx].block_id))
+ if (ext4fs_log_journal(journal_buffer, b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
int i;
short status;
static int prev_bg_bmap_idx = -1;
- long int blknr;
+ uint32_t blknr;
int remainder;
int bg_idx;
- unsigned int blk_per_grp = ext4fs_root->sblock.blocks_per_group;
- unsigned int *di_buffer = NULL;
- unsigned int *DIB_start_addr = NULL;
+ uint32_t blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group);
+ __le32 *di_buffer = NULL;
+ void *dib_start_addr = NULL;
struct ext2_block_group *bgd = NULL;
struct ext_filesystem *fs = get_fs();
char *journal_buffer = zalloc(fs->blksz);
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);
printf("No memory\n");
return;
}
- DIB_start_addr = (unsigned int *)di_buffer;
- blknr = inode->b.blocks.double_indir_block;
+ dib_start_addr = di_buffer;
+ blknr = le32_to_cpu(inode->b.blocks.double_indir_block);
status = ext4fs_devread((lbaint_t)blknr * fs->sect_perblk, 0,
fs->blksz, (char *)di_buffer);
for (i = 0; i < fs->blksz / sizeof(int); i++) {
break;
debug("DICB releasing %u\n", *di_buffer);
- if (fs->blksz != 1024) {
- bg_idx = (*di_buffer) / blk_per_grp;
- } else {
- bg_idx = (*di_buffer) / blk_per_grp;
- remainder = (*di_buffer) % blk_per_grp;
+ bg_idx = le32_to_cpu(*di_buffer) / blk_per_grp;
+ if (fs->blksz == 1024) {
+ remainder = le32_to_cpu(*di_buffer) % blk_per_grp;
if (!remainder)
bg_idx--;
}
- ext4fs_reset_block_bmap(*di_buffer,
+ /* 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++;
- bgd[bg_idx].free_blocks++;
- fs->sb->free_blocks++;
+ 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)
- 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,
- bgd[bg_idx].block_id))
+ b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
}
/* removing the parent double indirect block */
- blknr = inode->b.blocks.double_indir_block;
- if (fs->blksz != 1024) {
- bg_idx = blknr / blk_per_grp;
- } else {
- bg_idx = blknr / blk_per_grp;
+ blknr = le32_to_cpu(inode->b.blocks.double_indir_block);
+ bg_idx = blknr / blk_per_grp;
+ if (fs->blksz == 1024) {
remainder = blknr % blk_per_grp;
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);
- bgd[bg_idx].free_blocks++;
- fs->sb->free_blocks++;
+ 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)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,
- bgd[bg_idx].block_id))
+ if (ext4fs_log_journal(journal_buffer, b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
- debug("DIPB releasing %ld\n", blknr);
+ debug("DIPB releasing %d\n", blknr);
}
fail:
- free(DIB_start_addr);
+ free(dib_start_addr);
free(journal_buffer);
}
int i, j;
short status;
static int prev_bg_bmap_idx = -1;
- long int blknr;
+ uint32_t blknr;
int remainder;
int bg_idx;
- unsigned int blk_per_grp = ext4fs_root->sblock.blocks_per_group;
- unsigned int *tigp_buffer = NULL;
- unsigned int *tib_start_addr = NULL;
- unsigned int *tip_buffer = NULL;
- unsigned int *tipb_start_addr = NULL;
+ uint32_t blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group);
+ __le32 *tigp_buffer = NULL;
+ void *tib_start_addr = NULL;
+ __le32 *tip_buffer = NULL;
+ void *tipb_start_addr = NULL;
struct ext2_block_group *bgd = NULL;
struct ext_filesystem *fs = get_fs();
char *journal_buffer = zalloc(fs->blksz);
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);
printf("No memory\n");
return;
}
- tib_start_addr = (unsigned int *)tigp_buffer;
- blknr = inode->b.blocks.triple_indir_block;
+ tib_start_addr = tigp_buffer;
+ blknr = le32_to_cpu(inode->b.blocks.triple_indir_block);
status = ext4fs_devread((lbaint_t)blknr * fs->sect_perblk, 0,
fs->blksz, (char *)tigp_buffer);
for (i = 0; i < fs->blksz / sizeof(int); i++) {
tip_buffer = zalloc(fs->blksz);
if (!tip_buffer)
goto fail;
- tipb_start_addr = (unsigned int *)tip_buffer;
- status = ext4fs_devread((lbaint_t)(*tigp_buffer) *
+ tipb_start_addr = tip_buffer;
+ status = ext4fs_devread((lbaint_t)le32_to_cpu(*tigp_buffer) *
fs->sect_perblk, 0, fs->blksz,
(char *)tip_buffer);
for (j = 0; j < fs->blksz / sizeof(int); j++) {
- if (*tip_buffer == 0)
+ if (le32_to_cpu(*tip_buffer) == 0)
break;
- if (fs->blksz != 1024) {
- bg_idx = (*tip_buffer) / blk_per_grp;
- } else {
- bg_idx = (*tip_buffer) / blk_per_grp;
-
- remainder = (*tip_buffer) % blk_per_grp;
+ bg_idx = le32_to_cpu(*tip_buffer) / blk_per_grp;
+ if (fs->blksz == 1024) {
+ remainder = le32_to_cpu(*tip_buffer) % blk_per_grp;
if (!remainder)
bg_idx--;
}
- ext4fs_reset_block_bmap(*tip_buffer,
+ ext4fs_reset_block_bmap(le32_to_cpu(*tip_buffer),
fs->blk_bmaps[bg_idx],
bg_idx);
tip_buffer++;
- bgd[bg_idx].free_blocks++;
- fs->sb->free_blocks++;
+ /* 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)
- bgd[bg_idx].block_id *
+ b_bitmap_blk *
fs->sect_perblk, 0,
fs->blksz,
journal_buffer);
goto fail;
if (ext4fs_log_journal(journal_buffer,
- bgd[bg_idx].
- block_id))
+ b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
* removing the grand parent blocks
* which is connected to inode
*/
- if (fs->blksz != 1024) {
- bg_idx = (*tigp_buffer) / blk_per_grp;
- } else {
- bg_idx = (*tigp_buffer) / blk_per_grp;
-
- remainder = (*tigp_buffer) % blk_per_grp;
+ bg_idx = le32_to_cpu(*tigp_buffer) / blk_per_grp;
+ if (fs->blksz == 1024) {
+ remainder = le32_to_cpu(*tigp_buffer) % blk_per_grp;
if (!remainder)
bg_idx--;
}
- ext4fs_reset_block_bmap(*tigp_buffer,
+ ext4fs_reset_block_bmap(le32_to_cpu(*tigp_buffer),
fs->blk_bmaps[bg_idx], bg_idx);
tigp_buffer++;
- bgd[bg_idx].free_blocks++;
- fs->sb->free_blocks++;
+ /* 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)
- 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,
- bgd[bg_idx].block_id))
+ b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
}
/* removing the grand parent triple indirect block */
- blknr = inode->b.blocks.triple_indir_block;
- if (fs->blksz != 1024) {
- bg_idx = blknr / blk_per_grp;
- } else {
- bg_idx = blknr / blk_per_grp;
+ blknr = le32_to_cpu(inode->b.blocks.triple_indir_block);
+ 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);
- bgd[bg_idx].free_blocks++;
- fs->sb->free_blocks++;
+ /* 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)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,
- bgd[bg_idx].block_id))
+ if (ext4fs_log_journal(journal_buffer, b_bitmap_blk))
goto fail;
prev_bg_bmap_idx = bg_idx;
}
- debug("tigp buffer itself releasing %ld\n", blknr);
+ debug("tigp buffer itself releasing %d\n", blknr);
}
fail:
free(tib_start_addr);
int ibmap_idx;
char *read_buffer = NULL;
char *start_block_address = NULL;
- unsigned int no_blocks;
+ uint32_t no_blocks;
static int prev_bg_bmap_idx = -1;
unsigned int inodes_per_block;
- long int blkno;
+ uint32_t blkno;
unsigned int blkoff;
- unsigned int blk_per_grp = ext4fs_root->sblock.blocks_per_group;
- unsigned int inode_per_grp = ext4fs_root->sblock.inodes_per_group;
+ uint32_t blk_per_grp = le32_to_cpu(ext4fs_root->sblock.blocks_per_group);
+ uint32_t inode_per_grp = le32_to_cpu(ext4fs_root->sblock.inodes_per_group);
struct ext2_inode *inode_buffer = NULL;
struct ext2_block_group *bgd = NULL;
struct ext_filesystem *fs = get_fs();
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;
/* read the block no allocated to a file */
- no_blocks = inode.size / fs->blksz;
- if (inode.size % fs->blksz)
+ no_blocks = le32_to_cpu(inode.size) / fs->blksz;
+ if (le32_to_cpu(inode.size) % fs->blksz)
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);
- if (fs->blksz != 1024) {
- bg_idx = blknr / blk_per_grp;
- } else {
- bg_idx = blknr / blk_per_grp;
- 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);
-
- bgd[bg_idx].free_blocks++;
- fs->sb->free_blocks++;
-
- /* journal backup */
- if (prev_bg_bmap_idx != bg_idx) {
- status =
- ext4fs_devread((lbaint_t)
- 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))
- 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 = inode.size / fs->blksz;
- if (inode.size % fs->blksz)
- no_blocks++;
- for (i = 0; i < no_blocks; i++) {
- blknr = read_allocated_block(&inode, i);
- if (fs->blksz != 1024) {
- bg_idx = blknr / blk_per_grp;
- } else {
- bg_idx = blknr / blk_per_grp;
- 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);
-
- bgd[bg_idx].free_blocks++;
- fs->sb->free_blocks++;
- /* journal backup */
- if (prev_bg_bmap_idx != bg_idx) {
- memset(journal_buffer, '\0', fs->blksz);
- status = ext4fs_devread((lbaint_t)
- 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))
- goto fail;
- prev_bg_bmap_idx = 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);
+
+ /* 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) +
- (inodeno % __le32_to_cpu(inode_per_grp)) / inodes_per_block;
+ /* 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 */
blkoff = ((inodeno) % inodes_per_block) * fs->inodesz;
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);
- bgd[ibmap_idx].free_inodes++;
- fs->sb->free_inodes++;
+ 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)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, bgd[ibmap_idx].inode_id))
+ if (ext4fs_log_journal(journal_buffer, ext4fs_bg_get_inode_id(bgd, fs)))
goto fail;
ext4fs_update();
ext4fs_deinit();
+ ext4fs_reinit_global();
if (ext4fs_init() != 0) {
printf("error in File System init\n");
{
short status;
int i;
- unsigned int real_free_blocks = 0;
+ uint32_t real_free_blocks = 0;
struct ext_filesystem *fs = get_fs();
/* 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 */
/* get total no of blockgroups */
fs->no_blkgrp = (uint32_t)ext4fs_div_roundup(
- (ext4fs_root->sblock.total_blocks -
- ext4fs_root->sblock.first_data_block),
- ext4fs_root->sblock.blocks_per_group);
+ le32_to_cpu(ext4fs_root->sblock.total_blocks)
+ - le32_to_cpu(ext4fs_root->sblock.first_data_block),
+ le32_to_cpu(ext4fs_root->sblock.blocks_per_group));
/* get the block group descriptor table */
fs->gdtable_blkno = ((EXT2_MIN_BLOCK_SIZE == fs->blksz) + 1);
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)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)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 + fs->bgd[i].free_blocks;
- if (real_free_blocks != fs->sb->free_blocks)
- fs->sb->free_blocks = 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:
int i;
struct ext2_inode inode_journal;
struct journal_superblock_t *jsb;
- long int blknr;
+ uint32_t blknr;
struct ext_filesystem *fs = get_fs();
+ uint32_t new_feature_incompat;
/* free journal */
char *temp_buff = zalloc(fs->blksz);
ext4fs_devread((lbaint_t)blknr * fs->sect_perblk, 0, fs->blksz,
temp_buff);
jsb = (struct journal_superblock_t *)temp_buff;
- jsb->s_start = cpu_to_be32(0);
- put_ext4((uint64_t) (blknr * fs->blksz),
+ jsb->s_start = 0;
+ put_ext4((uint64_t) ((uint64_t)blknr * (uint64_t)fs->blksz),
(struct journal_superblock_t *)temp_buff, fs->blksz);
free(temp_buff);
}
/* get the superblock */
ext4_read_superblock((char *)fs->sb);
- fs->sb->feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
+ new_feature_incompat = le32_to_cpu(fs->sb->feature_incompat);
+ new_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
+ fs->sb->feature_incompat = cpu_to_le32(new_feature_incompat);
put_ext4((uint64_t)(SUPERBLOCK_SIZE),
(struct ext2_sblock *)fs->sb, (uint32_t)SUPERBLOCK_SIZE);
free(fs->sb);
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 i;
int blockcnt;
- unsigned int filesize = __le32_to_cpu(file_inode->size);
+ uint32_t filesize = le32_to_cpu(file_inode->size);
struct ext_filesystem *fs = get_fs();
int log2blksz = fs->dev_desc->log2blksz;
int log2_fs_blocksize = LOG2_BLOCK_SIZE(ext4fs_root) - log2blksz;
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;
delayed_next += blockend >> log2blksz;
} else { /* spill */
put_ext4((uint64_t)
- (delayed_start << log2blksz),
+ ((uint64_t)delayed_start << log2blksz),
delayed_buf,
(uint32_t) delayed_extent);
previous_block_number = blknr;
} else {
if (previous_block_number != -1) {
/* spill */
- put_ext4((uint64_t) (delayed_start <<
+ put_ext4((uint64_t) ((uint64_t)delayed_start <<
log2blksz),
delayed_buf,
(uint32_t) delayed_extent);
}
if (previous_block_number != -1) {
/* spill */
- put_ext4((uint64_t) (delayed_start << log2blksz),
+ put_ext4((uint64_t) ((uint64_t)delayed_start << log2blksz),
delayed_buf, (uint32_t) delayed_extent);
previous_block_number = -1;
}
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, sizeof(filename));
+ 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;
if (ext4fs_iget(parent_inodeno, g_parent_inode))
goto fail;
+ /* do not mess up a directory using hash trees */
+ if (le32_to_cpu(g_parent_inode->flags) & EXT4_INDEX_FL) {
+ printf("hash tree directory\n");
+ goto fail;
+ }
/* check if the filename is already present in root */
- existing_file_inodeno = ext4fs_filename_check(filename);
+ existing_file_inodeno = ext4fs_filename_unlink(filename);
if (existing_file_inodeno != -1) {
ret = ext4fs_delete_file(existing_file_inodeno);
fs->first_pass_bbmap = 0;
}
blocks_remaining = blks_reqd_for_file;
/* test for available space in partition */
- if (fs->sb->free_blocks < blks_reqd_for_file) {
+ if (le32_to_cpu(fs->sb->free_blocks) < blks_reqd_for_file) {
printf("Not enough space on partition !!!\n");
goto fail;
}
- ext4fs_update_parent_dentry(filename, &inodeno, FILETYPE_REG);
+ inodeno = ext4fs_update_parent_dentry(filename, FILETYPE_REG);
+ if (inodeno == -1)
+ goto fail;
/* prepare file inode */
inode_buffer = zalloc(fs->inodesz);
if (!inode_buffer)
goto fail;
file_inode = (struct ext2_inode *)inode_buffer;
- file_inode->mode = S_IFREG | S_IRWXU |
- S_IRGRP | S_IROTH | S_IXGRP | S_IXOTH;
+ file_inode->mode = cpu_to_le16(S_IFREG | S_IRWXU |
+ S_IRGRP | S_IROTH | S_IXGRP | S_IXOTH);
/* ToDo: Update correct time */
- file_inode->mtime = timestamp;
- file_inode->atime = timestamp;
- file_inode->ctime = timestamp;
- file_inode->nlinks = 1;
- file_inode->size = sizebytes;
+ file_inode->mtime = cpu_to_le32(timestamp);
+ file_inode->atime = cpu_to_le32(timestamp);
+ file_inode->ctime = cpu_to_le32(timestamp);
+ file_inode->nlinks = cpu_to_le16(1);
+ file_inode->size = cpu_to_le32(sizebytes);
/* Allocate data blocks */
ext4fs_allocate_blocks(file_inode, blocks_remaining,
&blks_reqd_for_file);
- file_inode->blockcnt = (blks_reqd_for_file * fs->blksz) >>
- fs->dev_desc->log2blksz;
+ file_inode->blockcnt = cpu_to_le32((blks_reqd_for_file * fs->blksz) >>
+ fs->dev_desc->log2blksz);
temp_ptr = zalloc(fs->blksz);
if (!temp_ptr)
goto fail;
- ibmap_idx = inodeno / ext4fs_root->sblock.inodes_per_group;
+ 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) +
- (inodeno % __le32_to_cpu(sblock->inodes_per_group)) /
+ 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;
ext4fs_devread((lbaint_t)itable_blkno * fs->sect_perblk, 0, fs->blksz,
/* 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 / ext4fs_root->sblock.inodes_per_group;
+ 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;
+ le32_to_cpu(sblock->inodes_per_group)) / inodes_per_block;
blkoff = (parent_inodeno % inodes_per_block) * fs->inodesz;
if (parent_itable_blkno != itable_blkno) {
memset(temp_ptr, '\0', fs->blksz);
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;
- free(temp_ptr);
} 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;
- free(temp_ptr);
}
ext4fs_update();
ext4fs_deinit();
fs->curr_inode_no = 0;
free(inode_buffer);
free(g_parent_inode);
+ free(temp_ptr);
g_parent_inode = NULL;
return 0;
ext4fs_deinit();
free(inode_buffer);
free(g_parent_inode);
+ free(temp_ptr);
g_parent_inode = NULL;
return -1;
}
+
+int ext4_write_file(const char *filename, void *buf, loff_t offset,
+ loff_t len, loff_t *actwrite)
+{
+ int ret;
+
+ if (offset != 0) {
+ printf("** Cannot support non-zero offset **\n");
+ return -1;
+ }
+
+ ret = ext4fs_write(filename, buf, len);
+ if (ret) {
+ printf("** Error ext4fs_write() **\n");
+ goto fail;
+ }
+
+ *actwrite = len;
+
+ return 0;
+
+fail:
+ *actwrite = 0;
+
+ return -1;
+}
projects / u-boot / blobdiff