size_t value_size = le32_to_cpu(entry->e_value_size);
- if (entry->e_value_block != 0 || value_size > size ||
-- le16_to_cpu(entry->e_value_offs) + value_size > size)
-+ if ((entry->e_value_inum == 0) &&
-+ (le16_to_cpu(entry->e_value_offs) + value_size > size))
++ if (!entry->e_value_inum &&
+ le16_to_cpu(entry->e_value_offs) + value_size > size)
+ return -EIO;
-+ if (entry->e_value_inum != 0 &&
++ if (entry->e_value_inum &&
+ (le32_to_cpu(entry->e_value_inum) < EXT4_FIRST_INO(inode->i_sb) ||
+ le32_to_cpu(entry->e_value_inum) >
+ le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_inodes_count)))
+ return NULL;
+ }
+
-+ if (ea_inode->i_xattr_inode_parent != parent->i_ino ||
++ if (EXT4_XATTR_INODE_GET_PARENT(ea_inode) != parent->i_ino ||
+ ea_inode->i_generation != parent->i_generation) {
+ ext4_error(parent->i_sb, "Backpointer from EA inode %lu "
+ "to parent invalid.", ea_ino);
goto cleanup;
- memcpy(buffer, bh->b_data + le16_to_cpu(entry->e_value_offs),
- size);
-+ if (entry->e_value_inum != 0) {
++ if (entry->e_value_inum) {
+ error = ext4_xattr_inode_get(inode,
+ le32_to_cpu(entry->e_value_inum),
+ buffer, &size);
goto cleanup;
- memcpy(buffer, (void *)IFIRST(header) +
- le16_to_cpu(entry->e_value_offs), size);
-+ if (entry->e_value_inum != 0) {
++ if (entry->e_value_inum) {
+ error = ext4_xattr_inode_get(inode,
+ le32_to_cpu(entry->e_value_inum),
+ buffer, &size);
for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
*total += EXT4_XATTR_LEN(last->e_name_len);
- if (!last->e_value_block && last->e_value_size) {
-+ if (last->e_value_inum == 0 && last->e_value_size > 0) {
++ if (!last->e_value_inum && last->e_value_size) {
size_t offs = le16_to_cpu(last->e_value_offs);
if (offs < *min_offs)
*min_offs = offs;
+ * A back-pointer from EA inode to parent inode will be useful
+ * for e2fsck.
+ */
-+ ea_inode->i_xattr_inode_parent = inode->i_ino;
++ EXT4_XATTR_INODE_SET_PARENT(ea_inode, inode->i_ino);
+ unlock_new_inode(ea_inode);
+ }
+
last = s->first;
for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
- if (!last->e_value_block && last->e_value_size) {
-+ if (last->e_value_inum == 0 && last->e_value_size > 0) {
++ if (!last->e_value_inum && last->e_value_size) {
size_t offs = le16_to_cpu(last->e_value_offs);
if (offs < min_offs)
min_offs = offs;
free = min_offs - ((void *)last - s->base) - sizeof(__u32);
if (!s->not_found) {
- if (!s->here->e_value_block && s->here->e_value_size) {
-+ if (!in_inode && s->here->e_value_inum == 0 &&
-+ s->here->e_value_size > 0) {
++ if (!in_inode &&
++ !s->here->e_value_inum && s->here->e_value_size) {
size_t size = le32_to_cpu(s->here->e_value_size);
free += EXT4_XATTR_SIZE(size);
}
memcpy(s->here->e_name, i->name, name_len);
} else {
- if (!s->here->e_value_block && s->here->e_value_size) {
-+ if (s->here->e_value_offs > 0 && s->here->e_value_inum == 0 &&
-+ s->here->e_value_size > 0) {
++ if (!s->here->e_value_inum && s->here->e_value_size &&
++ s->here->e_value_offs > 0) {
void *first_val = s->base + min_offs;
size_t offs = le16_to_cpu(s->here->e_value_offs);
void *val = s->base + offs;
last = EXT4_XATTR_NEXT(last);
}
}
-+ if (s->here->e_value_inum != 0) {
++ if (s->here->e_value_inum) {
+ ext4_xattr_inode_unlink(inode,
+ le32_to_cpu(s->here->e_value_inum));
+ s->here->e_value_inum = 0;
/* Adjust the value offsets of the entries */
for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
- if (!last->e_value_block && last->e_value_size) {
-+ if (last->e_value_inum == 0 && last->e_value_size > 0) {
++ if (!last->e_value_inum && last->e_value_size) {
new_offs = le16_to_cpu(last->e_value_offs) +
value_offs_shift;
BUG_ON(new_offs + le32_to_cpu(last->e_value_size)
+ return -ENOMEM;
+ memcpy(new_array, *lea_ino_array,
+ offsetof(struct ext4_xattr_ino_array,
-+ xia_inodes[count]));
++ xia_inodes[count]));
+ kfree(*lea_ino_array);
+ *lea_ino_array = new_array;
+ }
goto cleanup;
+ raw_inode = ext4_raw_inode(&iloc);
+ header = IHDR(inode, raw_inode);
-+ entry = IFIRST(header);
-+ for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) {
-+ if (entry->e_value_inum == 0)
++ for (entry = IFIRST(header); !IS_LAST_ENTRY(entry);
++ entry = EXT4_XATTR_NEXT(entry)) {
++ if (!entry->e_value_inum)
+ continue;
+ if (ext4_expand_ino_array(lea_ino_array,
+ entry->e_value_inum) != 0) {
goto cleanup;
}
+
-+ entry = BFIRST(bh);
-+ for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) {
-+ if (entry->e_value_inum == 0)
++ for (entry = BFIRST(bh); !IS_LAST_ENTRY(entry);
++ entry = EXT4_XATTR_NEXT(entry)) {
++ if (!entry->e_value_inum)
+ continue;
+ if (ext4_expand_ino_array(lea_ino_array,
+ entry->e_value_inum) != 0)
}
- if (entry->e_value_block == 0 && entry->e_value_size != 0) {
-+ if (entry->e_value_inum == 0 && entry->e_value_size != 0) {
++ if (!entry->e_value_inum && entry->e_value_size) {
__le32 *value = (__le32 *)((char *)header +
le16_to_cpu(entry->e_value_offs));
for (n = (le32_to_cpu(entry->e_value_size) +
__le32 e_value_size; /* size of attribute value */
__le32 e_hash; /* hash value of name and value */
char e_name[0]; /* attribute name */
-@@ -63,6 +63,15 @@ struct ext4_xattr_entry {
+@@ -63,6 +63,26 @@ struct ext4_xattr_entry {
EXT4_I(inode)->i_extra_isize))
#define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))
-+#define i_xattr_inode_parent i_mtime.tv_sec
++/*
++ * Link EA inode back to parent one using i_mtime field.
++ * Extra integer type conversion added to ignore higher
++ * bits in i_mtime.tv_sec which might be set by ext4_get()
++ */
++#define EXT4_XATTR_INODE_SET_PARENT(inode, inum) \
++do { \
++ (inode)->i_mtime.tv_sec = inum; \
++} while(0)
++
++#define EXT4_XATTR_INODE_GET_PARENT(inode) \
++((__u32)(inode)->i_mtime.tv_sec)
+
+/*
+ * The minimum size of EA value when you start storing it in an external inode
git://git.whamcloud.com / fs / lustre-release.git / blobdiff