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ocfs2: Handle value tree roots in ocfs2_xa_set_inline_value() 

Previously the xattr code would send in a fake value, containing a tree
root, to the function that installed name+value pairs.  Instead, we pass
the real value to ocfs2_xa_set_inline_value(), and it notices that the
value cannot fit.  Thus, it installs a tree root.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Joel Becker 2009-08-17 19:56:01 -07:00
parent 69a3e539d0
commit 9dc474005d
1 changed files with 16 additions and 38 deletions
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54
fs/ocfs2/xattr.c
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@ -1968,14 +1968,19 @@ static void ocfs2_xa_store_inline_value(struct ocfs2_xa_loc *loc,
{
int nameval_offset = le16_to_cpu(loc->xl_entry->xe_name_offset);
int name_size = OCFS2_XATTR_SIZE(xi->xi_name_len);
int size = namevalue_size_xi(xi);
int inline_value_size = namevalue_size_xi(xi) - name_size;
const void *value = xi->xi_value;
char *nameval_buf;
if (!xi->xi_value)
return;
if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
value = &def_xv;
inline_value_size = OCFS2_XATTR_ROOT_SIZE;
}
nameval_buf = ocfs2_xa_offset_pointer(loc, nameval_offset);
memcpy(nameval_buf + name_size, xi->xi_value, size - name_size);
memcpy(nameval_buf + name_size, value, inline_value_size);
}
static void ocfs2_init_dinode_xa_loc(struct ocfs2_xa_loc *loc,
@ -2054,13 +2059,6 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
u32 name_hash = ocfs2_xattr_name_hash(inode, xi->xi_name,
xi->xi_name_len);
struct ocfs2_xa_loc loc;
struct ocfs2_xattr_info xi_l = {
.xi_name_index = xi->xi_name_index,
.xi_name = xi->xi_name,
.xi_name_len = xi->xi_name_len,
.xi_value = xi->xi_value,
.xi_value_len = xi->xi_value_len,
};
struct ocfs2_xattr_value_buf vb = {
.vb_bh = xs->xattr_bh,
.vb_access = ocfs2_journal_access_di,
@ -2090,16 +2088,9 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
free += ocfs2_xe_entry_usage(xs->here);
/* Check free space in inode or block */
if (xi->xi_value) {
if (free < ocfs2_xi_entry_usage(xi)) {
ret = -ENOSPC;
goto out;
}
if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
size_l = namevalue_size_xi(xi);
xi_l.xi_value = (void *)&def_xv;
xi_l.xi_value_len = OCFS2_XATTR_ROOT_SIZE;
}
if (xi->xi_value && (free < ocfs2_xi_entry_usage(xi))) {
ret = -ENOSPC;
goto out;
}
if (!xs->not_found) {
@ -5255,8 +5246,7 @@ static int ocfs2_xattr_set_entry_in_bucket(struct inode *inode,
handle_t *handle,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
u32 name_hash,
int local)
u32 name_hash)
{
int ret;
u64 blkno;
@ -5571,13 +5561,14 @@ static int ocfs2_xattr_set_in_bucket(struct inode *inode,
struct ocfs2_xattr_search *xs,
struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret, local = 1;
int ret;
size_t value_len;
char *val = (char *)xi->xi_value;
struct ocfs2_xattr_entry *xe = xs->here;
u32 name_hash = ocfs2_xattr_name_hash(inode, xi->xi_name,
xi->xi_name_len);
value_len = xi->xi_value_len;
if (!xs->not_found && !ocfs2_xattr_is_local(xe)) {
/*
* We need to truncate the xattr storage first.
@ -5591,9 +5582,7 @@ static int ocfs2_xattr_set_in_bucket(struct inode *inode,
* the modification to the xattr block will be done
* by following steps.
*/
if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE)
value_len = xi->xi_value_len;
else
if (xi->xi_value_len <= OCFS2_XATTR_INLINE_SIZE)
value_len = 0;
ret = ocfs2_xattr_bucket_value_truncate_xs(inode, xs,
@ -5606,26 +5595,15 @@ static int ocfs2_xattr_set_in_bucket(struct inode *inode,
goto set_value_outside;
}
value_len = xi->xi_value_len;
/* So we have to handle the inside block change now. */
if (value_len > OCFS2_XATTR_INLINE_SIZE) {
/*
* If the new value will be stored outside of block,
* initalize a new empty value root and insert it first.
*/
local = 0;
xi->xi_value = &def_xv;
xi->xi_value_len = OCFS2_XATTR_ROOT_SIZE;
}
ret = ocfs2_xattr_set_entry_in_bucket(inode, ctxt->handle, xi, xs,
name_hash, local);
name_hash);
if (ret) {
mlog_errno(ret);
goto out;
}
if (value_len <= OCFS2_XATTR_INLINE_SIZE)
if (xi->xi_value_len <= OCFS2_XATTR_INLINE_SIZE)
goto out;
/* allocate the space now for the outside block storage. */