+++ /dev/null
-/*
- * 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, 2014, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- */
-
-#ifndef _LUCACHE_H
-#define _LUCACHE_H
-
-#include <libcfs/libcfs.h>
-#include <lnet/types.h>
-
-/** \defgroup ucache ucache
- *
- * @{
- */
-
-#define UC_CACHE_NEW 0x01
-#define UC_CACHE_ACQUIRING 0x02
-#define UC_CACHE_INVALID 0x04
-#define UC_CACHE_EXPIRED 0x08
-
-#define UC_CACHE_IS_NEW(i) ((i)->ue_flags & UC_CACHE_NEW)
-#define UC_CACHE_IS_INVALID(i) ((i)->ue_flags & UC_CACHE_INVALID)
-#define UC_CACHE_IS_ACQUIRING(i) ((i)->ue_flags & UC_CACHE_ACQUIRING)
-#define UC_CACHE_IS_EXPIRED(i) ((i)->ue_flags & UC_CACHE_EXPIRED)
-#define UC_CACHE_IS_VALID(i) ((i)->ue_flags == 0)
-
-#define UC_CACHE_SET_NEW(i) (i)->ue_flags |= UC_CACHE_NEW
-#define UC_CACHE_SET_INVALID(i) (i)->ue_flags |= UC_CACHE_INVALID
-#define UC_CACHE_SET_ACQUIRING(i) (i)->ue_flags |= UC_CACHE_ACQUIRING
-#define UC_CACHE_SET_EXPIRED(i) (i)->ue_flags |= UC_CACHE_EXPIRED
-#define UC_CACHE_SET_VALID(i) (i)->ue_flags = 0
-
-#define UC_CACHE_CLEAR_NEW(i) (i)->ue_flags &= ~UC_CACHE_NEW
-#define UC_CACHE_CLEAR_ACQUIRING(i) (i)->ue_flags &= ~UC_CACHE_ACQUIRING
-#define UC_CACHE_CLEAR_INVALID(i) (i)->ue_flags &= ~UC_CACHE_INVALID
-#define UC_CACHE_CLEAR_EXPIRED(i) (i)->ue_flags &= ~UC_CACHE_EXPIRED
-
-struct upcall_cache_entry;
-
-struct md_perm {
- lnet_nid_t mp_nid;
- __u32 mp_perm;
-};
-
-struct md_identity {
- struct upcall_cache_entry *mi_uc_entry;
- uid_t mi_uid;
- gid_t mi_gid;
- struct group_info *mi_ginfo;
- int mi_nperms;
- struct md_perm *mi_perms;
-};
-
-struct upcall_cache_entry {
- struct list_head ue_hash;
- __u64 ue_key;
- atomic_t ue_refcount;
- int ue_flags;
- wait_queue_head_t ue_waitq;
- cfs_time_t ue_acquire_expire;
- cfs_time_t ue_expire;
- union {
- struct md_identity identity;
- } u;
-};
-
-#define UC_CACHE_HASH_SIZE (128)
-#define UC_CACHE_HASH_INDEX(id) ((id) & (UC_CACHE_HASH_SIZE - 1))
-#define UC_CACHE_UPCALL_MAXPATH (1024UL)
-
-struct upcall_cache;
-
-struct upcall_cache_ops {
- void (*init_entry)(struct upcall_cache_entry *, void *args);
- void (*free_entry)(struct upcall_cache *,
- struct upcall_cache_entry *);
- int (*upcall_compare)(struct upcall_cache *,
- struct upcall_cache_entry *,
- __u64 key, void *args);
- int (*downcall_compare)(struct upcall_cache *,
- struct upcall_cache_entry *,
- __u64 key, void *args);
- int (*do_upcall)(struct upcall_cache *,
- struct upcall_cache_entry *);
- int (*parse_downcall)(struct upcall_cache *,
- struct upcall_cache_entry *, void *);
-};
-
-struct upcall_cache {
- struct list_head uc_hashtable[UC_CACHE_HASH_SIZE];
- spinlock_t uc_lock;
- rwlock_t uc_upcall_rwlock;
-
- char uc_name[40]; /* for upcall */
- char uc_upcall[UC_CACHE_UPCALL_MAXPATH];
- int uc_acquire_expire; /* seconds */
- int uc_entry_expire; /* seconds */
- struct upcall_cache_ops *uc_ops;
-};
-
-struct upcall_cache_entry *upcall_cache_get_entry(struct upcall_cache *cache,
- __u64 key, void *args);
-void upcall_cache_put_entry(struct upcall_cache *cache,
- struct upcall_cache_entry *entry);
-int upcall_cache_downcall(struct upcall_cache *cache, __u32 err, __u64 key,
- void *args);
-void upcall_cache_flush_idle(struct upcall_cache *cache);
-void upcall_cache_flush_all(struct upcall_cache *cache);
-void upcall_cache_flush_one(struct upcall_cache *cache, __u64 key, void *args);
-struct upcall_cache *upcall_cache_init(const char *name, const char *upcall,
- struct upcall_cache_ops *ops);
-void upcall_cache_cleanup(struct upcall_cache *cache);
-
-#if 0
-struct upcall_cache_entry *upcall_cache_get_entry(struct upcall_cache *hash,
- __u64 key, __u32 primary,
- __u32 ngroups, __u32 *groups);
-void upcall_cache_put_entry(struct upcall_cache *hash,
- struct upcall_cache_entry *entry);
-int upcall_cache_downcall(struct upcall_cache *hash, __u32 err, __u64 key,
- __u32 primary, __u32 ngroups, __u32 *groups);
-void upcall_cache_flush_idle(struct upcall_cache *cache);
-void upcall_cache_flush_all(struct upcall_cache *cache);
-struct upcall_cache *upcall_cache_init(const char *name);
-void upcall_cache_cleanup(struct upcall_cache *hash);
-
-#endif
-
-/** @} ucache */
-
-#endif /* _LUCACHE_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff