/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * lustre/obdclass/capa.c
- * Lustre Capability Hash Management
+ * GPL HEADER START
*
- * Copyright (c) 2005 Cluster File Systems, Inc.
- * Author: Lai Siyao<lsy@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
*/
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/obdclass/capa.c
+ *
+ * Lustre Capability Hash Management
+ *
+ * Author: Lai Siyao<lsy@clusterfs.com>
+ */
+
#ifndef EXPORT_SYMTAB
# define EXPORT_SYMTAB
#endif
static inline void capa_delete(struct obd_capa *ocapa)
{
LASSERT(capa_on_server(ocapa));
- hlist_del(&ocapa->u.tgt.c_hash);
- list_del(&ocapa->c_list);
+ hlist_del_init(&ocapa->u.tgt.c_hash);
+ list_del_init(&ocapa->c_list);
capa_count[ocapa->c_site]--;
- free_capa(ocapa);
+ /* release the ref when alloc */
+ capa_put(ocapa);
}
void cleanup_capa_hash(struct hlist_head *hash)
struct list_head *list = &capa_list[CAPA_SITE_SERVER];
ocapa = alloc_capa(CAPA_SITE_SERVER);
- if (!ocapa)
+ if (IS_ERR(ocapa))
return NULL;
spin_lock(&capa_lock);
set_capa_expiry(ocapa);
hlist_add_head(&ocapa->u.tgt.c_hash, head);
list_add_tail(&ocapa->c_list, list);
- capa_count[CAPA_SITE_SERVER]++;
capa_get(ocapa);
-
+ capa_count[CAPA_SITE_SERVER]++;
if (capa_count[CAPA_SITE_SERVER] > CAPA_HASH_SIZE)
capa_delete_lru(list);
-
- DEBUG_CAPA(D_SEC, &ocapa->c_capa, "new");
-
spin_unlock(&capa_lock);
return ocapa;
+ } else {
+ capa_get(old);
+ spin_unlock(&capa_lock);
+ capa_put(ocapa);
+ return old;
}
-
- capa_get(old);
- spin_unlock(&capa_lock);
-
- DEBUG_CAPA(D_SEC, &old->c_capa, "update");
-
- free_capa(ocapa);
- return old;
}
struct obd_capa *capa_lookup(struct hlist_head *hash, struct lustre_capa *capa,
return 0;
}
+
+int capa_encrypt_id(__u32 *d, __u32 *s, __u8 *key, int keylen)
+{
+ struct ll_crypto_cipher *tfm;
+ struct scatterlist sd = {
+ .page = virt_to_page(d),
+ .offset = (unsigned long)(d) % CFS_PAGE_SIZE,
+ .length = 16,
+ };
+ struct scatterlist ss = {
+ .page = virt_to_page(s),
+ .offset = (unsigned long)(s) % CFS_PAGE_SIZE,
+ .length = 16,
+ };
+ struct blkcipher_desc desc;
+ unsigned int min;
+ int rc;
+ ENTRY;
+
+ tfm = ll_crypto_alloc_blkcipher("aes", 0, 0 );
+ if (tfm == NULL) {
+ CERROR("failed to load transform for aes\n");
+ RETURN(-EFAULT);
+ }
+
+ min = ll_crypto_tfm_alg_min_keysize(tfm);
+ if (keylen < min) {
+ CERROR("keylen at least %d bits for aes\n", min * 8);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ rc = ll_crypto_blkcipher_setkey(tfm, key, min);
+ if (rc) {
+ CERROR("failed to setting key for aes\n");
+ GOTO(out, rc);
+ }
+
+ desc.tfm = tfm;
+ desc.info = NULL;
+ desc.flags = 0;
+ rc = ll_crypto_blkcipher_encrypt(&desc, &sd, &ss, 16);
+ if (rc) {
+ CERROR("failed to encrypt for aes\n");
+ GOTO(out, rc);
+ }
+
+ EXIT;
+
+out:
+ ll_crypto_free_blkcipher(tfm);
+ return rc;
+}
+
+int capa_decrypt_id(__u32 *d, __u32 *s, __u8 *key, int keylen)
+{
+ struct ll_crypto_cipher *tfm;
+ struct scatterlist sd = {
+ .page = virt_to_page(d),
+ .offset = (unsigned long)(d) % CFS_PAGE_SIZE,
+ .length = 16,
+ };
+ struct scatterlist ss = {
+ .page = virt_to_page(s),
+ .offset = (unsigned long)(s) % CFS_PAGE_SIZE,
+ .length = 16,
+ };
+ struct blkcipher_desc desc;
+ unsigned int min;
+ int rc;
+ ENTRY;
+
+ tfm = ll_crypto_alloc_blkcipher("aes", 0, 0 );
+ if (tfm == NULL) {
+ CERROR("failed to load transform for aes\n");
+ RETURN(-EFAULT);
+ }
+
+ min = ll_crypto_tfm_alg_min_keysize(tfm);
+ if (keylen < min) {
+ CERROR("keylen at least %d bits for aes\n", min * 8);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ rc = ll_crypto_blkcipher_setkey(tfm, key, min);
+ if (rc) {
+ CERROR("failed to setting key for aes\n");
+ GOTO(out, rc);
+ }
+
+ desc.tfm = tfm;
+ desc.info = NULL;
+ desc.flags = 0;
+ rc = ll_crypto_blkcipher_decrypt(&desc, &sd, &ss, 16);
+ if (rc) {
+ CERROR("failed to decrypt for aes\n");
+ GOTO(out, rc);
+ }
+
+ EXIT;
+
+out:
+ ll_crypto_free_blkcipher(tfm);
+ return rc;
+}
#endif
void capa_cpy(void *capa, struct obd_capa *ocapa)
spin_unlock(&ocapa->c_lock);
}
-char *dump_capa_content(char *buf, char *key, int len)
-{
- int i, n = 0;
-
- for (i = 0; i < len; i++)
- n += sprintf(buf + n, "%02x", (unsigned char) key[i]);
- return buf;
-}
-
EXPORT_SYMBOL(init_capa_hash);
EXPORT_SYMBOL(cleanup_capa_hash);
-
EXPORT_SYMBOL(capa_add);
EXPORT_SYMBOL(capa_lookup);
-
EXPORT_SYMBOL(capa_hmac);
+EXPORT_SYMBOL(capa_encrypt_id);
+EXPORT_SYMBOL(capa_decrypt_id);
EXPORT_SYMBOL(capa_cpy);
-
-EXPORT_SYMBOL(dump_capa_content);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff