* Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com)
* Copyright (c) 2015 Kaho Ng (ngkaho1234@gmail.com)
*
- *
- * HelenOS:
- * Copyright (c) 2012 Martin Sucha
- * Copyright (c) 2012 Frantisek Princ
- * All rights reserved.
- *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
if (in_inode) {
struct ext4_xattr_ibody_header *header;
struct ext4_xattr_entry *first_entry;
- uint16_t inode_size =
+ int16_t inode_size =
ext4_get16(&xattr_ref->fs->sb, inode_size);
header = EXT4_XATTR_IHDR(xattr_ref->inode_ref->inode);
first_entry = EXT4_XATTR_IFIRST(header);
{
int ret = EOK;
bool block_modified = false;
- void *ibody_data, *block_data;
+ void *ibody_data = 0;
+ void *block_data = 0;
struct ext4_xattr_item *item, *save_item;
size_t inode_size_rem, block_size_rem;
struct ext4_xattr_ibody_header *ibody_header = NULL;
entry = EXT4_XATTR_IFIRST(ibody_header);
}
- if (xattr_ref->dirty) {
- /* If there are enough spaces in the ibody EA table.*/
- if (inode_size_rem > sizeof(struct ext4_xattr_ibody_header)) {
- memset(ibody_header, 0, inode_size_rem);
- ibody_header->h_magic = EXT4_XATTR_MAGIC;
- ibody_data = (char *)ibody_header + inode_size_rem;
- inode_size_rem -=
- sizeof(struct ext4_xattr_ibody_header);
+ if (!xattr_ref->dirty)
+ goto Finish;
+ /* If there are enough spaces in the ibody EA table.*/
+ if (inode_size_rem > sizeof(struct ext4_xattr_ibody_header)) {
+ memset(ibody_header, 0, inode_size_rem);
+ ibody_header->h_magic = EXT4_XATTR_MAGIC;
+ ibody_data = (char *)ibody_header + inode_size_rem;
+ inode_size_rem -= sizeof(struct ext4_xattr_ibody_header);
- xattr_ref->inode_ref->dirty = true;
+ xattr_ref->inode_ref->dirty = true;
+ }
+ /* If we need an extra block to hold the EA entries*/
+ if (xattr_ref->ea_size > inode_size_rem) {
+ if (!xattr_ref->block_loaded) {
+ ret = ext4_xattr_try_alloc_block(xattr_ref);
+ if (ret != EOK)
+ goto Finish;
}
- /* If we need an extra block to hold the EA entries*/
- if (xattr_ref->ea_size > inode_size_rem) {
- if (!xattr_ref->block_loaded) {
- ret = ext4_xattr_try_alloc_block(xattr_ref);
- if (ret != EOK)
- goto Finish;
- }
+ block_header = EXT4_XATTR_BHDR(&xattr_ref->block);
+ block_entry = EXT4_XATTR_BFIRST(&xattr_ref->block);
+ ext4_xattr_set_block_header(xattr_ref);
+ block_data = (char *)block_header + block_size_rem;
+ block_size_rem -= sizeof(struct ext4_xattr_header);
+
+ xattr_ref->block.dirty = true;
+ } else {
+ /* We don't need an extra block.*/
+ if (xattr_ref->block_loaded) {
block_header = EXT4_XATTR_BHDR(&xattr_ref->block);
- block_entry = EXT4_XATTR_BFIRST(&xattr_ref->block);
- ext4_xattr_set_block_header(xattr_ref);
- block_data = (char *)block_header + block_size_rem;
- block_size_rem -= sizeof(struct ext4_xattr_header);
-
- xattr_ref->block.dirty = true;
- } else {
- /* We don't need an extra block.*/
- if (xattr_ref->block_loaded) {
- block_header =
- EXT4_XATTR_BHDR(&xattr_ref->block);
- block_header->h_refcount = to_le32(
- to_le32(block_header->h_refcount) - 1);
- if (!block_header->h_refcount) {
- ext4_xattr_try_free_block(xattr_ref);
- block_header = NULL;
- } else {
- block_entry = EXT4_XATTR_BFIRST(
- &xattr_ref->block);
- block_data = (char *)block_header +
- block_size_rem;
- block_size_rem -=
- sizeof(struct ext4_xattr_header);
- ext4_inode_set_file_acl(
- xattr_ref->inode_ref->inode,
- &xattr_ref->fs->sb, 0);
-
- xattr_ref->inode_ref->dirty = true;
- xattr_ref->block.dirty = true;
- }
- }
- }
- RB_FOREACH_SAFE(item, ext4_xattr_tree, &xattr_ref->root,
- save_item)
- {
- if (EXT4_XATTR_SIZE(item->data_size) +
- EXT4_XATTR_LEN(item->name_len) <=
- inode_size_rem) {
- ibody_data = (char *)ibody_data -
- EXT4_XATTR_SIZE(item->data_size);
- ext4_xattr_set_inode_entry(item, ibody_header,
- entry, ibody_data);
- memcpy(EXT4_XATTR_NAME(entry), item->name,
- item->name_len);
- memcpy(ibody_data, item->data, item->data_size);
- entry = EXT4_XATTR_NEXT(entry);
- inode_size_rem -=
- EXT4_XATTR_SIZE(item->data_size) +
- EXT4_XATTR_LEN(item->name_len);
+ block_header->h_refcount =
+ to_le32(to_le32(block_header->h_refcount) - 1);
+ if (!block_header->h_refcount) {
+ ext4_xattr_try_free_block(xattr_ref);
+ block_header = NULL;
+ } else {
+ block_entry =
+ EXT4_XATTR_BFIRST(&xattr_ref->block);
+ block_data =
+ (char *)block_header + block_size_rem;
+ block_size_rem -=
+ sizeof(struct ext4_xattr_header);
+ ext4_inode_set_file_acl(
+ xattr_ref->inode_ref->inode,
+ &xattr_ref->fs->sb, 0);
xattr_ref->inode_ref->dirty = true;
- continue;
- }
- if (EXT4_XATTR_SIZE(item->data_size) +
- EXT4_XATTR_LEN(item->name_len) >
- block_size_rem) {
- ret = ENOSPC;
- goto Finish;
+ xattr_ref->block.dirty = true;
}
- block_data = (char *)block_data -
+ }
+ }
+ RB_FOREACH_SAFE(item, ext4_xattr_tree, &xattr_ref->root, save_item)
+ {
+ if (EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len) <=
+ inode_size_rem) {
+ ibody_data = (char *)ibody_data -
EXT4_XATTR_SIZE(item->data_size);
- ext4_xattr_set_block_entry(item, block_header,
- block_entry, block_data);
- memcpy(EXT4_XATTR_NAME(block_entry), item->name,
+ ext4_xattr_set_inode_entry(item, ibody_header, entry,
+ ibody_data);
+ memcpy(EXT4_XATTR_NAME(entry), item->name,
item->name_len);
- memcpy(block_data, item->data, item->data_size);
- block_entry = EXT4_XATTR_NEXT(block_entry);
- block_size_rem -= EXT4_XATTR_SIZE(item->data_size) +
+ memcpy(ibody_data, item->data, item->data_size);
+ entry = EXT4_XATTR_NEXT(entry);
+ inode_size_rem -= EXT4_XATTR_SIZE(item->data_size) +
EXT4_XATTR_LEN(item->name_len);
- block_modified = true;
+ xattr_ref->inode_ref->dirty = true;
+ continue;
}
- xattr_ref->dirty = false;
- if (block_modified) {
- ext4_xattr_rehash(block_header,
- EXT4_XATTR_BFIRST(&xattr_ref->block));
- xattr_ref->block.dirty = true;
+ if (EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len) >
+ block_size_rem) {
+ ret = ENOSPC;
+ goto Finish;
}
+ block_data =
+ (char *)block_data - EXT4_XATTR_SIZE(item->data_size);
+ ext4_xattr_set_block_entry(item, block_header, block_entry,
+ block_data);
+ memcpy(EXT4_XATTR_NAME(block_entry), item->name,
+ item->name_len);
+ memcpy(block_data, item->data, item->data_size);
+ block_entry = EXT4_XATTR_NEXT(block_entry);
+ block_size_rem -= EXT4_XATTR_SIZE(item->data_size) +
+ EXT4_XATTR_LEN(item->name_len);
+
+ block_modified = true;
+ }
+ xattr_ref->dirty = false;
+ if (block_modified) {
+ ext4_xattr_rehash(block_header,
+ EXT4_XATTR_BFIRST(&xattr_ref->block));
+ xattr_ref->block.dirty = true;
}
Finish:
projects / lwext4.git / blobdiff