}
/**
- * This adds or updates an xattr.
+ * This adds an xattr.
*
* Add @xattr_name attr with @xattr_val value and @xattr_val_len length,
- * if the attribute already exists, then update its value.
*
* \retval 0 success
* \retval -ENOMEM if no memory could be allocated for the cached attr
+ * \retval -EPROTO if duplicate xattr is being added
*/
static int ll_xattr_cache_add(struct list_head *cache,
const char *xattr_name,
ENTRY;
if (ll_xattr_cache_find(cache, xattr_name, &xattr) == 0) {
- /* Found a cached EA, update it */
-
- if (xattr_val_len != xattr->xe_vallen) {
- char *val;
- OBD_ALLOC(val, xattr_val_len);
- if (val == NULL) {
- CDEBUG(D_CACHE, "failed to allocate %u bytes "
- "for xattr %s update\n",
- xattr_val_len,
- xattr_name);
- RETURN(-ENOMEM);
- }
- OBD_FREE(xattr->xe_value, xattr->xe_vallen);
- xattr->xe_value = val;
- xattr->xe_vallen = xattr_val_len;
- }
- memcpy(xattr->xe_value, xattr_val, xattr_val_len);
-
- CDEBUG(D_CACHE, "update: [%s]=%.*s\n", xattr_name,
- xattr_val_len, xattr_val);
-
- RETURN(0);
+ CDEBUG(D_CACHE, "duplicate xattr: [%s]\n", xattr_name);
+ RETURN(-EPROTO);
}
OBD_SLAB_ALLOC_PTR_GFP(xattr, xattr_kmem, __GFP_IO);
}
/**
- * Match or enqueue a PR or PW LDLM lock.
+ * Match or enqueue a PR lock.
*
* Find or request an LDLM lock with xattr data.
* Since LDLM does not provide API for atomic match_or_enqueue,
mutex_lock(&lli->lli_xattrs_enq_lock);
/* Try matching first. */
- mode = ll_take_md_lock(inode, MDS_INODELOCK_XATTR, &lockh, 0,
- oit->it_op == IT_SETXATTR ? LCK_PW :
- (LCK_PR | LCK_PW));
+ mode = ll_take_md_lock(inode, MDS_INODELOCK_XATTR, &lockh, 0, LCK_PR);
if (mode != 0) {
/* fake oit in mdc_revalidate_lock() manner */
oit->d.lustre.it_lock_handle = lockh.cookie;
RETURN(PTR_ERR(op_data));
}
- op_data->op_valid = OBD_MD_FLXATTR | OBD_MD_FLXATTRLS |
- OBD_MD_FLXATTRLOCKED;
-#ifdef CONFIG_FS_POSIX_ACL
- /* If working with ACLs, we would like to cache local ACLs */
- if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
- op_data->op_valid |= OBD_MD_FLRMTLGETFACL;
-#endif
+ op_data->op_valid = OBD_MD_FLXATTR | OBD_MD_FLXATTRLS;
rc = md_enqueue(exp, &einfo, oit, op_data, &lockh, NULL, 0, NULL, 0);
ll_finish_md_op_data(op_data);
if (oit->d.lustre.it_status < 0) {
CDEBUG(D_CACHE, "getxattr intent returned %d for fid "DFID"\n",
oit->d.lustre.it_status, PFID(ll_inode2fid(inode)));
- GOTO(out_destroy, rc = oit->d.lustre.it_status);
+ rc = oit->d.lustre.it_status;
+ /* xattr data is so large that we don't want to cache it */
+ if (rc == -ERANGE)
+ rc = -EAGAIN;
+ GOTO(out_destroy, rc);
}
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
rc = -EPROTO;
} else if (OBD_FAIL_CHECK(OBD_FAIL_LLITE_XATTR_ENOMEM)) {
rc = -ENOMEM;
+ } else if (!strcmp(xdata, XATTR_NAME_ACL_ACCESS)) {
+ /* Filter out ACL ACCESS since it's cached separately */
+ CDEBUG(D_CACHE, "not caching %s\n",
+ XATTR_NAME_ACL_ACCESS);
+ rc = 0;
} else {
rc = ll_xattr_cache_add(&lli->lli_xattrs, xdata, xval,
*xsizes);
GOTO(out_maybe_drop, rc);
out_maybe_drop:
- /* drop lock on error or getxattr */
- if (rc != 0 || oit->it_op != IT_SETXATTR)
- ll_intent_drop_lock(oit);
+
+ ll_intent_drop_lock(oit);
if (rc != 0)
up_write(&lli->lli_xattrs_list_rwsem);
return rc;
}
-
-/**
- * Set/update an xattr value or remove xattr using the write-through cache.
- *
- * Set/update the xattr value (if @valid has OBD_MD_FLXATTR) of @name to @newval
- * or
- * remove the xattr @name (@valid has OBD_MD_FLXATTRRM set) from @inode.
- * @flags is either XATTR_CREATE or XATTR_REPLACE as defined by setxattr(2)
- *
- * \retval 0 no error occured
- * \retval -EPROTO network protocol error
- * \retval -ENOMEM not enough memory for the cache
- * \retval -ERANGE the buffer is not large enough
- * \retval -ENODATA no such attr (in the removal case)
- */
-int ll_xattr_cache_update(struct inode *inode,
- const char *name,
- const char *newval,
- size_t size,
- __u64 valid,
- int flags)
-{
- struct lookup_intent oit = { .it_op = IT_SETXATTR };
- struct ll_sb_info *sbi = ll_i2sbi(inode);
- struct ptlrpc_request *req = NULL;
- struct ll_inode_info *lli = ll_i2info(inode);
- struct obd_capa *oc;
- int rc;
-
- ENTRY;
-
- LASSERT(!!(valid & OBD_MD_FLXATTR) ^ !!(valid & OBD_MD_FLXATTRRM));
-
- rc = ll_xattr_cache_refill(inode, &oit);
- if (rc)
- RETURN(rc);
-
- oc = ll_mdscapa_get(inode);
- rc = md_setxattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
- valid | OBD_MD_FLXATTRLOCKED, name, newval,
- size, 0, flags, ll_i2suppgid(inode), &req);
- capa_put(oc);
-
- if (rc) {
- ll_intent_drop_lock(&oit);
- GOTO(out, rc);
- }
-
- if (valid & OBD_MD_FLXATTR)
- rc = ll_xattr_cache_add(&lli->lli_xattrs, name, newval, size);
- else if (valid & OBD_MD_FLXATTRRM)
- rc = ll_xattr_cache_del(&lli->lli_xattrs, name);
-
- ll_intent_drop_lock(&oit);
- GOTO(out, rc);
-out:
- up_write(&lli->lli_xattrs_list_rwsem);
- ptlrpc_req_finished(req);
-
- return rc;
-}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff