#include "ext4_errno.h"
#include "ext4_blockdev.h"
#include "ext4_super.h"
+#include "ext4_crc32c.h"
#include "ext4_debug.h"
#include "ext4_block_group.h"
#include "ext4_balloc.h"
static void ext4_fs_debug_features_inc(uint32_t features_incompatible)
{
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_COMPRESSION)
+ if (features_incompatible & EXT4_FINCOM_COMPRESSION)
ext4_dbg(DEBUG_FS, DBG_NONE "compression\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_FILETYPE)
+ if (features_incompatible & EXT4_FINCOM_FILETYPE)
ext4_dbg(DEBUG_FS, DBG_NONE "filetype\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_RECOVER)
+ if (features_incompatible & EXT4_FINCOM_RECOVER)
ext4_dbg(DEBUG_FS, DBG_NONE "recover\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_JOURNAL_DEV)
+ if (features_incompatible & EXT4_FINCOM_JOURNAL_DEV)
ext4_dbg(DEBUG_FS, DBG_NONE "journal_dev\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_META_BG)
+ if (features_incompatible & EXT4_FINCOM_META_BG)
ext4_dbg(DEBUG_FS, DBG_NONE "meta_bg\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_EXTENTS)
+ if (features_incompatible & EXT4_FINCOM_EXTENTS)
ext4_dbg(DEBUG_FS, DBG_NONE "extents\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_64BIT)
+ if (features_incompatible & EXT4_FINCOM_64BIT)
ext4_dbg(DEBUG_FS, DBG_NONE "64bit\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_MMP)
+ if (features_incompatible & EXT4_FINCOM_MMP)
ext4_dbg(DEBUG_FS, DBG_NONE "mnp\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_FLEX_BG)
+ if (features_incompatible & EXT4_FINCOM_FLEX_BG)
ext4_dbg(DEBUG_FS, DBG_NONE "flex_bg\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_EA_INODE)
+ if (features_incompatible & EXT4_FINCOM_EA_INODE)
ext4_dbg(DEBUG_FS, DBG_NONE "ea_inode\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_DIRDATA)
+ if (features_incompatible & EXT4_FINCOM_DIRDATA)
ext4_dbg(DEBUG_FS, DBG_NONE "dirdata\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)
+ if (features_incompatible & EXT4_FINCOM_BG_USE_META_CSUM)
ext4_dbg(DEBUG_FS, DBG_NONE "meta_csum\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_LARGEDIR)
+ if (features_incompatible & EXT4_FINCOM_LARGEDIR)
ext4_dbg(DEBUG_FS, DBG_NONE "largedir\n");
- if (features_incompatible & EXT4_FEATURE_INCOMPAT_INLINE_DATA)
+ if (features_incompatible & EXT4_FINCOM_INLINE_DATA)
ext4_dbg(DEBUG_FS, DBG_NONE "inline_data\n");
}
static void ext4_fs_debug_features_comp(uint32_t features_compatible)
{
- if (features_compatible & EXT4_FEATURE_COMPAT_DIR_PREALLOC)
+ if (features_compatible & EXT4_FCOM_DIR_PREALLOC)
ext4_dbg(DEBUG_FS, DBG_NONE "dir_prealloc\n");
- if (features_compatible & EXT4_FEATURE_COMPAT_IMAGIC_INODES)
+ if (features_compatible & EXT4_FCOM_IMAGIC_INODES)
ext4_dbg(DEBUG_FS, DBG_NONE "imagic_inodes\n");
- if (features_compatible & EXT4_FEATURE_COMPAT_HAS_JOURNAL)
+ if (features_compatible & EXT4_FCOM_HAS_JOURNAL)
ext4_dbg(DEBUG_FS, DBG_NONE "has_journal\n");
- if (features_compatible & EXT4_FEATURE_COMPAT_EXT_ATTR)
+ if (features_compatible & EXT4_FCOM_EXT_ATTR)
ext4_dbg(DEBUG_FS, DBG_NONE "ext_attr\n");
- if (features_compatible & EXT4_FEATURE_COMPAT_RESIZE_INODE)
+ if (features_compatible & EXT4_FCOM_RESIZE_INODE)
ext4_dbg(DEBUG_FS, DBG_NONE "resize_inode\n");
- if (features_compatible & EXT4_FEATURE_COMPAT_DIR_INDEX)
+ if (features_compatible & EXT4_FCOM_DIR_INDEX)
ext4_dbg(DEBUG_FS, DBG_NONE "dir_index\n");
}
static void ext4_fs_debug_features_ro(uint32_t features_ro)
{
- if (features_ro & EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER)
+ if (features_ro & EXT4_FRO_COM_SPARSE_SUPER)
ext4_dbg(DEBUG_FS, DBG_NONE "sparse_super\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_LARGE_FILE)
+ if (features_ro & EXT4_FRO_COM_LARGE_FILE)
ext4_dbg(DEBUG_FS, DBG_NONE "large_file\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_BTREE_DIR)
+ if (features_ro & EXT4_FRO_COM_BTREE_DIR)
ext4_dbg(DEBUG_FS, DBG_NONE "btree_dir\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_HUGE_FILE)
+ if (features_ro & EXT4_FRO_COM_HUGE_FILE)
ext4_dbg(DEBUG_FS, DBG_NONE "huge_file\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
+ if (features_ro & EXT4_FRO_COM_GDT_CSUM)
ext4_dbg(DEBUG_FS, DBG_NONE "gtd_csum\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_DIR_NLINK)
+ if (features_ro & EXT4_FRO_COM_DIR_NLINK)
ext4_dbg(DEBUG_FS, DBG_NONE "dir_nlink\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
+ if (features_ro & EXT4_FRO_COM_EXTRA_ISIZE)
ext4_dbg(DEBUG_FS, DBG_NONE "extra_isize\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_QUOTA)
+ if (features_ro & EXT4_FRO_COM_QUOTA)
ext4_dbg(DEBUG_FS, DBG_NONE "quota\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_BIGALLOC)
+ if (features_ro & EXT4_FRO_COM_BIGALLOC)
ext4_dbg(DEBUG_FS, DBG_NONE "bigalloc\n");
- if (features_ro & EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
+ if (features_ro & EXT4_FRO_COM_METADATA_CSUM)
ext4_dbg(DEBUG_FS, DBG_NONE "metadata_csum\n");
}
/*Check features_incompatible*/
v = (ext4_get32(&fs->sb, features_incompatible) &
- (~CONFIG_FEATURE_INCOMPAT_SUPP));
+ (~CONFIG_SUPPORTED_FINCOM));
if (v) {
ext4_dbg(DEBUG_FS, DBG_ERROR
"sblock has unsupported features incompatible:\n");
/*Check features_read_only*/
v = (ext4_get32(&fs->sb, features_read_only) &
- (~CONFIG_FEATURE_RO_COMPAT_SUPP));
+ (~CONFIG_SUPPORTED_FRO_COM));
if (v) {
ext4_dbg(DEBUG_FS, DBG_WARN
"sblock has unsupported features read only:\n");
ext4_sb_get_desc_size(&bg_ref->fs->sb);
bool flex_bg =
- ext4_sb_has_feature_incompatible(&bg_ref->fs->sb,
- EXT4_FEATURE_INCOMPAT_FLEX_BG);
+ ext4_sb_feature_incom(&bg_ref->fs->sb, EXT4_FINCOM_FLEX_BG);
uint32_t inode_table_bcnt = inodes_per_group * inode_size / block_size;
memset(block_bitmap.data, 0, block_size);
bit_max = ext4_sb_is_super_in_bg(&bg_ref->fs->sb, bg_ref->index);
- if (!ext4_sb_has_feature_incompatible(&bg_ref->fs->sb,
- EXT4_FEATURE_INCOMPAT_META_BG) ||
+ if (!ext4_sb_feature_incom(&bg_ref->fs->sb, EXT4_FINCOM_META_BG) ||
bg_ref->index < ext4_sb_first_meta_bg(&bg_ref->fs->sb) *
dsc_per_block) {
if (bit_max) {
ext4_fs_mark_bitmap_end(group_blocks, block_size * 8, block_bitmap.data);
block_bitmap.dirty = true;
+ ext4_balloc_set_bitmap_csum(&bg_ref->fs->sb,
+ bg_ref->block_group,
+ block_bitmap.data);
+ bg_ref->dirty = true;
+
/* Save bitmap */
return ext4_block_set(bg_ref->fs->bdev, &block_bitmap);
}
block_bitmap.dirty = true;
+ ext4_ialloc_set_bitmap_csum(&bg_ref->fs->sb,
+ bg_ref->block_group,
+ block_bitmap.data);
+ bg_ref->dirty = true;
+
/* Save bitmap */
return ext4_block_set(bg_ref->fs->bdev, &block_bitmap);
}
dsc_id = bgid / dsc_per_block;
first_meta_bg = ext4_sb_first_meta_bg(s);
- if (!ext4_sb_has_feature_incompatible(s,
- EXT4_FEATURE_INCOMPAT_META_BG) ||
+ if (!ext4_sb_feature_incom(s, EXT4_FINCOM_META_BG) ||
dsc_id < first_meta_bg)
return ext4_get32(s, first_data_block) + dsc_id + 1;
return EOK;
}
+/*
+ * BIG FAT NOTES:
+ * Currently we do not verify the checksum of block_group_desc
+ * and inode.
+ */
+
/**@brief Compute checksum of block group descriptor.
* @param sb Superblock
* @param bgid Index of block group in the filesystem
uint16_t crc = 0;
/* Compute the checksum only if the filesystem supports it */
- if (ext4_sb_has_feature_read_only(sb,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ if (ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_METADATA_CSUM)) {
+ /* Use metadata_csum algorithm instead */
+ uint32_t le32_bgid = to_le32(bgid);
+ uint32_t orig_checksum, checksum;
+
+ /* Preparation: temporarily set bg checksum to 0 */
+ orig_checksum = bg->checksum;
+ bg->checksum = 0;
+
+ /* First calculate crc32 checksum against fs uuid */
+ checksum = ext4_crc32c(~0, sb->uuid, sizeof(sb->uuid));
+ /* Then calculate crc32 checksum against 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));
+ bg->checksum = orig_checksum;
+
+ crc = checksum & 0xFFFF;
+ } else if (ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_GDT_CSUM)) {
uint8_t *base = (uint8_t *)bg;
uint8_t *checksum = (uint8_t *)&bg->checksum;
offset += sizeof(bg->checksum);
/* Checksum of the rest of block group descriptor */
- if ((ext4_sb_has_feature_incompatible(
- sb, EXT4_FEATURE_INCOMPAT_64BIT)) &&
+ if ((ext4_sb_feature_incom(sb, EXT4_FINCOM_64BIT)) &&
(offset < ext4_sb_get_desc_size(sb)))
crc = ext4_bg_crc16(crc, ((uint8_t *)bg) + offset,
return ext4_block_set(ref->fs->bdev, &ref->block);
}
+static uint32_t ext4_fs_inode_checksum(struct ext4_inode_ref *inode_ref)
+{
+ uint32_t checksum = 0;
+ struct ext4_sblock *sb = &inode_ref->fs->sb;
+ uint16_t inode_size = ext4_get16(sb, inode_size);
+
+ if (ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_METADATA_CSUM)) {
+ uint32_t orig_checksum;
+
+ uint32_t ino_index = to_le32(inode_ref->index);
+ uint32_t ino_gen =
+ 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);
+
+ /* First calculate crc32 checksum against fs uuid */
+ checksum = ext4_crc32c(~0, 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
+ * the entire inode */
+ checksum = ext4_crc32c(checksum, inode_ref->inode,
+ inode_size);
+ ext4_inode_set_checksum(sb, inode_ref->inode,
+ orig_checksum);
+ }
+ return checksum;
+}
+
+static void ext4_fs_set_inode_checksum(struct ext4_inode_ref *inode_ref)
+{
+ struct ext4_sblock *sb = &inode_ref->fs->sb;
+ 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));
+}
+
int ext4_fs_get_inode_ref(struct ext4_fs *fs, uint32_t index,
struct ext4_inode_ref *ref)
{
/* Check if reference modified */
if (ref->dirty) {
/* Mark block dirty for writing changes to physical device */
+ ext4_fs_set_inode_checksum(ref);
ref->block.dirty = true;
}
(void)fs;
#if CONFIG_EXTENT_ENABLE
/* Initialize extents if needed */
- if (ext4_sb_has_feature_incompatible(&fs->sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) {
+ if (ext4_sb_feature_incom(&fs->sb, EXT4_FINCOM_EXTENTS)) {
ext4_inode_set_flag(inode, EXT4_INODE_FLAG_EXTENTS);
/* Initialize extent root header */
{
/* Check if newly allocated i-node will be a directory */
bool is_dir;
+ uint16_t inode_size = ext4_get16(&fs->sb, inode_size);
is_dir = (filetype == EXT4_DIRENTRY_DIR);
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) -
+ ext4_offsetof(struct ext4_inode,
+ extra_isize));
/* Reset blocks array. For symbolic link inode, just
* fill in blocks with 0 */
int rc;
#if CONFIG_EXTENT_ENABLE
/* For extents must be data block destroyed by other way */
- if ((ext4_sb_has_feature_incompatible(&fs->sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) &&
+ if ((ext4_sb_feature_incom(&fs->sb, EXT4_FINCOM_EXTENTS)) &&
(ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_EXTENTS))) {
/* Data structures are released during truncate operation... */
goto finish;
/* Extents are handled otherwise = there is not support in this function
*/
ext4_assert(!(
- ext4_sb_has_feature_incompatible(&fs->sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS) &&
+ ext4_sb_feature_incom(&fs->sb, EXT4_FINCOM_EXTENTS) &&
(ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_EXTENTS))));
struct ext4_inode *inode = inode_ref->inode;
block_size;
uint32_t diff_blocks_count = old_blocks_count - new_blocks_count;
#if CONFIG_EXTENT_ENABLE
- if ((ext4_sb_has_feature_incompatible(sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) &&
+ if ((ext4_sb_feature_incom(sb, EXT4_FINCOM_EXTENTS)) &&
(ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_EXTENTS))) {
/* Extents require special operation */
(void)extent_create;
#if CONFIG_EXTENT_ENABLE
/* Handle i-node using extents */
- if ((ext4_sb_has_feature_incompatible(&fs->sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) &&
+ if ((ext4_sb_feature_incom(&fs->sb, EXT4_FINCOM_EXTENTS)) &&
(ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_EXTENTS))) {
ext4_fsblk_t current_fsblk;
#if CONFIG_EXTENT_ENABLE
/* Handle inode using extents */
- if ((ext4_sb_has_feature_incompatible(&fs->sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) &&
+ if ((ext4_sb_feature_incom(&fs->sb, EXT4_FINCOM_EXTENTS)) &&
(ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_EXTENTS))) {
/* Not reachable */
return ENOTSUP;
{
#if CONFIG_EXTENT_ENABLE
/* Handle extents separately */
- if ((ext4_sb_has_feature_incompatible(&inode_ref->fs->sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) &&
+ if ((ext4_sb_feature_incom(&inode_ref->fs->sb, EXT4_FINCOM_EXTENTS)) &&
(ext4_inode_has_flag(inode_ref->inode, EXT4_INODE_FLAG_EXTENTS))) {
int rc;
ext4_fsblk_t current_fsblk;
ext4_inode_set_links_count(inode_ref->inode, link);
bool is_dx =
- ext4_sb_has_feature_compatible(&inode_ref->fs->sb,
- EXT4_FEATURE_COMPAT_DIR_INDEX) &&
+ 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) {
uint32_t v =
ext4_get32(&inode_ref->fs->sb, features_read_only);
- v |= EXT4_FEATURE_RO_COMPAT_DIR_NLINK;
+ v |= EXT4_FRO_COM_DIR_NLINK;
ext4_set32(&inode_ref->fs->sb, features_read_only, v);
}
}