#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"
#include "ext4_inode.h"
-#include "ext4_extent.h"
#include <string.h>
#include <stdlib.h>
header->h_hash = to_le32(hash);
}
+#if CONFIG_META_CSUM_ENABLE
+static uint32_t
+ext4_xattr_block_checksum(struct ext4_inode_ref *inode_ref,
+ ext4_fsblk_t blocknr,
+ struct ext4_xattr_header *header)
+{
+ uint32_t checksum = 0;
+ uint64_t le64_blocknr = blocknr;
+ struct ext4_sblock *sb = &inode_ref->fs->sb;
+
+ if (ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_METADATA_CSUM)) {
+ uint32_t orig_checksum;
+
+ /* Preparation: temporarily set bg checksum to 0 */
+ orig_checksum = header->h_checksum;
+ header->h_checksum = 0;
+ /* First calculate crc32 checksum against fs uuid */
+ checksum = ext4_crc32c(EXT4_CRC32_INIT, sb->uuid,
+ sizeof(sb->uuid));
+ /* Then calculate crc32 checksum block number */
+ checksum = ext4_crc32c(checksum, &le64_blocknr,
+ sizeof(le64_blocknr));
+ /* Finally calculate crc32 checksum against
+ * the entire xattr block */
+ checksum = ext4_crc32c(checksum, header,
+ ext4_sb_get_block_size(sb));
+ header->h_checksum = orig_checksum;
+ }
+ return checksum;
+}
+#else
+#define ext4_xattr_block_checksum(...) 0
+#endif
+
+static void
+ext4_xattr_set_block_checksum(struct ext4_inode_ref *inode_ref,
+ ext4_fsblk_t blocknr __unused,
+ struct ext4_xattr_header *header)
+{
+ struct ext4_sblock *sb = &inode_ref->fs->sb;
+ if (!ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_METADATA_CSUM))
+ return;
+
+ header->h_checksum =
+ ext4_xattr_block_checksum(inode_ref, blocknr, header);
+}
+
static int ext4_xattr_item_cmp(struct ext4_xattr_item *a,
struct ext4_xattr_item *b)
{
int result;
+ if (a->in_inode && !b->in_inode)
+ return -1;
+
+ if (!a->in_inode && b->in_inode)
+ return 1;
+
result = a->name_index - b->name_index;
if (result)
return result;
memset(&item->node, 0, sizeof(item->node));
memcpy(item->name, name, name_len);
+ if (name_index == EXT4_XATTR_INDEX_SYSTEM &&
+ name_len == 4 &&
+ !memcmp(name, "data", 4))
+ item->in_inode = true;
+
return item;
}
.name = (char *)name, /*RB_FIND - won't touch this string*/
.name_len = name_len,
};
+ if (name_index == EXT4_XATTR_INDEX_SYSTEM &&
+ name_len == 4 &&
+ !memcmp(name, "data", 4))
+ tmp.in_inode = true;
return RB_FIND(ext4_xattr_tree, &xattr_ref->root, &tmp);
}
{
int ret = EOK;
- uint64_t xattr_block = 0;
+ ext4_fsblk_t xattr_block = 0;
xattr_block = ext4_inode_get_file_acl(xattr_ref->inode_ref->inode,
&xattr_ref->fs->sb);
if (!xattr_block) {
+ ext4_fsblk_t goal =
+ ext4_fs_inode_to_goal_block(xattr_ref->inode_ref);
+
ret = ext4_balloc_alloc_block(xattr_ref->inode_ref,
- (uint32_t *)&xattr_block);
+ goal,
+ &xattr_block);
if (ret != EOK)
goto Finish;
static void ext4_xattr_try_free_block(struct ext4_xattr_ref *xattr_ref)
{
- uint64_t xattr_block;
+ ext4_fsblk_t xattr_block;
xattr_block = ext4_inode_get_file_acl(xattr_ref->inode_ref->inode,
&xattr_ref->fs->sb);
ext4_inode_set_file_acl(xattr_ref->inode_ref->inode, &xattr_ref->fs->sb,
if (block_modified) {
ext4_xattr_rehash(block_header,
EXT4_XATTR_BFIRST(&xattr_ref->block));
+ ext4_xattr_set_block_checksum(xattr_ref->inode_ref,
+ xattr_ref->block.lb_id,
+ block_header);
xattr_ref->block.dirty = true;
}
ext4_xattr_lookup_item(ref, name_index, name, name_len);
if (replace) {
if (!item) {
- ret = ENOATTR;
+ ret = ENODATA;
goto Finish;
}
if (item->data_size != data_size)
ext4_xattr_lookup_item(ref, name_index, name, name_len);
if (!item) {
- ret = ENOATTR;
+ ret = ENODATA;
goto Finish;
}
item_size = item->data_size;
struct ext4_xattr_ref *ref)
{
int rc;
- uint64_t xattr_block;
+ ext4_fsblk_t xattr_block;
xattr_block = ext4_inode_get_file_acl(inode_ref->inode, &fs->sb);
RB_INIT(&ref->root);
ref->ea_size = 0;