diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/include/lustre_capa.h')
| -rw-r--r-- | drivers/staging/lustre/lustre/include/lustre_capa.h | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/drivers/staging/lustre/lustre/include/lustre_capa.h b/drivers/staging/lustre/lustre/include/lustre_capa.h deleted file mode 100644 index fe19534ebd8f..000000000000 --- a/drivers/staging/lustre/lustre/include/lustre_capa.h +++ /dev/null @@ -1,305 +0,0 @@ -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * 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. - * - * 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). - * - * 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 - * - * 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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2012, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - * - * lustre/include/lustre_capa.h - * - * Author: Lai Siyao <lsy@clusterfs.com> - */ - -#ifndef __LINUX_CAPA_H_ -#define __LINUX_CAPA_H_ - -/** \defgroup capa capa - * - * @{ - */ - -/* - * capability - */ -#include <linux/crypto.h> -#include "lustre/lustre_idl.h" - -#define CAPA_TIMEOUT 1800 /* sec, == 30 min */ -#define CAPA_KEY_TIMEOUT (24 * 60 * 60) /* sec, == 1 days */ - -struct capa_hmac_alg { - const char *ha_name; - int ha_len; - int ha_keylen; -}; - -#define DEF_CAPA_HMAC_ALG(name, type, len, keylen) \ -[CAPA_HMAC_ALG_ ## type] = { \ - .ha_name = name, \ - .ha_len = len, \ - .ha_keylen = keylen, \ -} - -struct client_capa { - struct inode *inode; - struct list_head lli_list; /* link to lli_oss_capas */ -}; - -struct target_capa { - struct hlist_node c_hash; /* link to capa hash */ -}; - -struct obd_capa { - struct list_head c_list; /* link to capa_list */ - - struct lustre_capa c_capa; /* capa */ - atomic_t c_refc; /* ref count */ - unsigned long c_expiry; /* jiffies */ - spinlock_t c_lock; /* protect capa content */ - int c_site; - - union { - struct client_capa cli; - struct target_capa tgt; - } u; -}; - -enum { - CAPA_SITE_CLIENT = 0, - CAPA_SITE_SERVER, - CAPA_SITE_MAX -}; - -static inline struct lu_fid *capa_fid(struct lustre_capa *capa) -{ - return &capa->lc_fid; -} - -static inline __u64 capa_opc(struct lustre_capa *capa) -{ - return capa->lc_opc; -} - -static inline __u64 capa_uid(struct lustre_capa *capa) -{ - return capa->lc_uid; -} - -static inline __u64 capa_gid(struct lustre_capa *capa) -{ - return capa->lc_gid; -} - -static inline __u32 capa_flags(struct lustre_capa *capa) -{ - return capa->lc_flags & 0xffffff; -} - -static inline __u32 capa_alg(struct lustre_capa *capa) -{ - return (capa->lc_flags >> 24); -} - -static inline __u32 capa_keyid(struct lustre_capa *capa) -{ - return capa->lc_keyid; -} - -static inline __u64 capa_key_seq(struct lustre_capa_key *key) -{ - return key->lk_seq; -} - -static inline __u32 capa_key_keyid(struct lustre_capa_key *key) -{ - return key->lk_keyid; -} - -static inline __u32 capa_timeout(struct lustre_capa *capa) -{ - return capa->lc_timeout; -} - -static inline __u32 capa_expiry(struct lustre_capa *capa) -{ - return capa->lc_expiry; -} - -void _debug_capa(struct lustre_capa *, struct libcfs_debug_msg_data *, - const char *fmt, ...); -#define DEBUG_CAPA(level, capa, fmt, args...) \ -do { \ - if (((level) & D_CANTMASK) != 0 || \ - ((libcfs_debug & (level)) != 0 && \ - (libcfs_subsystem_debug & DEBUG_SUBSYSTEM) != 0)) { \ - LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, level, NULL); \ - _debug_capa((capa), &msgdata, fmt, ##args); \ - } \ -} while (0) - -#define DEBUG_CAPA_KEY(level, k, fmt, args...) \ -do { \ -CDEBUG(level, fmt " capability key@%p seq %llu keyid %u\n", \ - ##args, k, capa_key_seq(k), capa_key_keyid(k)); \ -} while (0) - -typedef int (* renew_capa_cb_t)(struct obd_capa *, struct lustre_capa *); - -/* obdclass/capa.c */ -extern struct list_head capa_list[]; -extern spinlock_t capa_lock; -extern int capa_count[]; -extern struct kmem_cache *capa_cachep; - -struct hlist_head *init_capa_hash(void); -void cleanup_capa_hash(struct hlist_head *hash); - -struct obd_capa *capa_add(struct hlist_head *hash, - struct lustre_capa *capa); -struct obd_capa *capa_lookup(struct hlist_head *hash, - struct lustre_capa *capa, int alive); - -int capa_hmac(__u8 *hmac, struct lustre_capa *capa, __u8 *key); -int capa_encrypt_id(__u32 *d, __u32 *s, __u8 *key, int keylen); -int capa_decrypt_id(__u32 *d, __u32 *s, __u8 *key, int keylen); -void capa_cpy(void *dst, struct obd_capa *ocapa); -static inline struct obd_capa *alloc_capa(int site) -{ - struct obd_capa *ocapa; - - if (unlikely(site != CAPA_SITE_CLIENT && site != CAPA_SITE_SERVER)) - return ERR_PTR(-EINVAL); - - OBD_SLAB_ALLOC_PTR(ocapa, capa_cachep); - if (unlikely(!ocapa)) - return ERR_PTR(-ENOMEM); - - INIT_LIST_HEAD(&ocapa->c_list); - atomic_set(&ocapa->c_refc, 1); - spin_lock_init(&ocapa->c_lock); - ocapa->c_site = site; - if (ocapa->c_site == CAPA_SITE_CLIENT) - INIT_LIST_HEAD(&ocapa->u.cli.lli_list); - else - INIT_HLIST_NODE(&ocapa->u.tgt.c_hash); - - return ocapa; -} - -static inline struct obd_capa *capa_get(struct obd_capa *ocapa) -{ - if (!ocapa) - return NULL; - - atomic_inc(&ocapa->c_refc); - return ocapa; -} - -static inline void capa_put(struct obd_capa *ocapa) -{ - if (!ocapa) - return; - - if (atomic_read(&ocapa->c_refc) == 0) { - DEBUG_CAPA(D_ERROR, &ocapa->c_capa, "refc is 0 for"); - LBUG(); - } - - if (atomic_dec_and_test(&ocapa->c_refc)) { - LASSERT(list_empty(&ocapa->c_list)); - if (ocapa->c_site == CAPA_SITE_CLIENT) { - LASSERT(list_empty(&ocapa->u.cli.lli_list)); - } else { - struct hlist_node *hnode; - - hnode = &ocapa->u.tgt.c_hash; - LASSERT(!hnode->next && !hnode->pprev); - } - OBD_SLAB_FREE(ocapa, capa_cachep, sizeof(*ocapa)); - } -} - -static inline int open_flags_to_accmode(int flags) -{ - int mode = flags; - - if ((mode + 1) & O_ACCMODE) - mode++; - if (mode & O_TRUNC) - mode |= 2; - - return mode; -} - -static inline __u64 capa_open_opc(int mode) -{ - return mode & FMODE_WRITE ? CAPA_OPC_OSS_WRITE : CAPA_OPC_OSS_READ; -} - -static inline void set_capa_expiry(struct obd_capa *ocapa) -{ - unsigned long expiry = cfs_time_sub((unsigned long)ocapa->c_capa.lc_expiry, - get_seconds()); - ocapa->c_expiry = cfs_time_add(cfs_time_current(), - cfs_time_seconds(expiry)); -} - -static inline int capa_is_expired_sec(struct lustre_capa *capa) -{ - return (capa->lc_expiry - get_seconds() <= 0); -} - -static inline int capa_is_expired(struct obd_capa *ocapa) -{ - return time_before_eq(ocapa->c_expiry, cfs_time_current()); -} - -static inline int capa_opc_supported(struct lustre_capa *capa, __u64 opc) -{ - return (capa_opc(capa) & opc) == opc; -} - -struct filter_capa_key { - struct list_head k_list; - struct lustre_capa_key k_key; -}; - -enum { - LC_ID_NONE = 0, - LC_ID_PLAIN = 1, - LC_ID_CONVERT = 2 -}; - -#define BYPASS_CAPA (struct lustre_capa *)ERR_PTR(-ENOENT) - -/** @} capa */ - -#endif /* __LINUX_CAPA_H_ */ |