* Overall external interface routines.
*========================================================================*/
-/* Retrieve an extended attribute and its value. Must have ilock. */
+/*
+ * Retrieve an extended attribute and its value. Must have ilock.
+ * Returns 0 on successful retrieval, otherwise an error.
+ */
int
xfs_attr_get_ilocked(
struct xfs_inode *ip,
xfs_iunlock(ip, lock_mode);
*valuelenp = args.valuelen;
- return error == -EEXIST ? 0 : error;
+ return error;
}
/*
*
* This leaf block cannot have a "remote" value, we only call this routine
* if bmap_one_block() says there is only one block (ie: no remote blks).
+ *
+ * Returns 0 on successful retrieval, otherwise an error.
*/
STATIC int
xfs_attr_leaf_get(xfs_da_args_t *args)
}
error = xfs_attr3_leaf_getvalue(bp, args);
xfs_trans_brelse(args->trans, bp);
- if (!error && (args->rmtblkno > 0) && !(args->flags & ATTR_KERNOVAL)) {
- error = xfs_attr_rmtval_get(args);
- }
- return error;
+ if (error)
+ return error;
+
+ /* check if we have to retrieve a remote attribute to get the value */
+ if (args->flags & ATTR_KERNOVAL)
+ return 0;
+ if (!args->rmtblkno)
+ return 0;
+ return xfs_attr_rmtval_get(args);
}
/*========================================================================
}
/*
- * Look up a filename in a node attribute list.
+ * Retrieve the attribute data from a node attribute list.
*
* This routine gets called for any attribute fork that has more than one
* block, ie: both true Btree attr lists and for single-leaf-blocks with
* "remote" values taking up more blocks.
+ *
+ * Returns 0 on successful retrieval, otherwise an error.
*/
STATIC int
xfs_attr_node_get(xfs_da_args_t *args)
error = xfs_da3_node_lookup_int(state, &retval);
if (error) {
retval = error;
- } else if (retval == -EEXIST) {
- blk = &state->path.blk[ state->path.active-1 ];
- ASSERT(blk->bp != NULL);
- ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
-
- /*
- * Get the value, local or "remote"
- */
- retval = xfs_attr3_leaf_getvalue(blk->bp, args);
- if (!retval && (args->rmtblkno > 0)
- && !(args->flags & ATTR_KERNOVAL)) {
- retval = xfs_attr_rmtval_get(args);
- }
+ goto out_release;
}
+ if (retval != -EEXIST)
+ goto out_release;
+
+ /*
+ * Get the value, local or "remote"
+ */
+ blk = &state->path.blk[state->path.active - 1];
+ retval = xfs_attr3_leaf_getvalue(blk->bp, args);
+ if (retval)
+ goto out_release;
+ if (args->flags & ATTR_KERNOVAL)
+ goto out_release;
+ if (args->rmtblkno > 0)
+ retval = xfs_attr_rmtval_get(args);
/*
* If not in a transaction, we have to release all the buffers.
*/
+out_release:
for (i = 0; i < state->path.active; i++) {
xfs_trans_brelse(args->trans, state->path.blk[i].bp);
state->path.blk[i].bp = NULL;
}
/*
- * Look up a name in a shortform attribute list structure.
+ * Retreive the attribute value and length.
+ *
+ * If ATTR_KERNOVAL is specified, only the length needs to be returned.
+ * Unlike a lookup, we only return an error if the attribute does not
+ * exist or we can't retrieve the value.
*/
-/*ARGSUSED*/
int
xfs_attr_shortform_getvalue(xfs_da_args_t *args)
{
continue;
if (args->flags & ATTR_KERNOVAL) {
args->valuelen = sfe->valuelen;
- return -EEXIST;
+ return 0;
}
if (args->valuelen < sfe->valuelen) {
args->valuelen = sfe->valuelen;
args->valuelen = sfe->valuelen;
memcpy(args->value, &sfe->nameval[args->namelen],
args->valuelen);
- return -EEXIST;
+ return 0;
}
return -ENOATTR;
}
/*
* Get the value associated with an attribute name from a leaf attribute
* list structure.
+ *
+ * If ATTR_KERNOVAL is specified, only the length needs to be returned.
+ * Unlike a lookup, we only return an error if the attribute does not
+ * exist or we can't retrieve the value.
*/
int
xfs_attr3_leaf_getvalue(