LU-3963 obdclass: convert to linux list api

[fs/lustre-release.git] / lustre / include / lustre_capa.h

diff --git a/lustre/include/lustre_capa.h b/lustre/include/lustre_capa.h
index d9110ae..ac713d0 100644 (file)
--- a/lustre/include/lustre_capa.h
+++ b/lustre/include/lustre_capa.h
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -28,6 +26,8 @@
 /*
  * 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/
@@ -71,27 +71,27 @@ struct capa_hmac_alg {
 }
 
 struct client_capa {
-        struct inode             *inode;
-        cfs_list_t                lli_list;     /* link to lli_oss_capas */
+       struct inode            *inode;
+       struct list_head        lli_list;       /* link to lli_oss_capas */
 };
 
 struct target_capa {
-        cfs_hlist_node_t          c_hash;       /* link to capa hash */
+       struct hlist_node       c_hash;         /* link to capa hash */
 };
 
 struct obd_capa {
-        cfs_list_t                c_list;       /* link to capa_list */
-
-        struct lustre_capa        c_capa;       /* capa */
-        cfs_atomic_t              c_refc;       /* ref count */
-        cfs_time_t                c_expiry;     /* jiffies */
-        cfs_spinlock_t            c_lock;       /* protect capa content */
-        int                       c_site;
-
-        union {
-                struct client_capa      cli;
-                struct target_capa      tgt;
-        } u;
+       struct list_head        c_list;         /* link to capa_list */
+
+       struct lustre_capa      c_capa;         /* capa */
+       atomic_t                c_refc;         /* ref count */
+       cfs_time_t              c_expiry;       /* jiffies */
+       spinlock_t              c_lock; /* protect capa content */
+       int                     c_site;
+
+       union {
+               struct client_capa      cli;
+               struct target_capa      tgt;
+       } u;
 };
 
 enum {
@@ -176,17 +176,17 @@ CDEBUG(level, fmt " capability key@%p seq "LPU64" keyid %u\n",                 \
 typedef int (* renew_capa_cb_t)(struct obd_capa *, struct lustre_capa *);
 
 /* obdclass/capa.c */
-extern cfs_list_t capa_list[];
-extern cfs_spinlock_t capa_lock;
+extern struct list_head capa_list[];
+extern spinlock_t capa_lock;
 extern int capa_count[];
-extern cfs_mem_cache_t *capa_cachep;
+extern struct kmem_cache *capa_cachep;
 
-cfs_hlist_head_t *init_capa_hash(void);
-void cleanup_capa_hash(cfs_hlist_head_t *hash);
+struct hlist_head *init_capa_hash(void);
+void cleanup_capa_hash(struct hlist_head *hash);
 
-struct obd_capa *capa_add(cfs_hlist_head_t *hash,
+struct obd_capa *capa_add(struct hlist_head *hash,
                           struct lustre_capa *capa);
-struct obd_capa *capa_lookup(cfs_hlist_head_t *hash,
+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);
@@ -205,46 +205,46 @@ static inline struct obd_capa *alloc_capa(int site)
         if (unlikely(!ocapa))
                 return ERR_PTR(-ENOMEM);
 
-        CFS_INIT_LIST_HEAD(&ocapa->c_list);
-        cfs_atomic_set(&ocapa->c_refc, 1);
-        cfs_spin_lock_init(&ocapa->c_lock);
-        ocapa->c_site = site;
-        if (ocapa->c_site == CAPA_SITE_CLIENT)
-                CFS_INIT_LIST_HEAD(&ocapa->u.cli.lli_list);
-        else
-                CFS_INIT_HLIST_NODE(&ocapa->u.tgt.c_hash);
+       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;
+       return ocapa;
 #else
-        return ERR_PTR(-EOPNOTSUPP);
+       return ERR_PTR(-EOPNOTSUPP);
 #endif
 }
 
 static inline struct obd_capa *capa_get(struct obd_capa *ocapa)
 {
-        if (!ocapa)
-                return NULL;
+       if (!ocapa)
+               return NULL;
 
-        cfs_atomic_inc(&ocapa->c_refc);
-        return ocapa;
+       atomic_inc(&ocapa->c_refc);
+       return ocapa;
 }
 
 static inline void capa_put(struct obd_capa *ocapa)
 {
-        if (!ocapa)
-                return;
+       if (!ocapa)
+               return;
 
-        if (cfs_atomic_read(&ocapa->c_refc) == 0) {
-                DEBUG_CAPA(D_ERROR, &ocapa->c_capa, "refc is 0 for");
-                LBUG();
-        }
+       if (atomic_read(&ocapa->c_refc) == 0) {
+               DEBUG_CAPA(D_ERROR, &ocapa->c_capa, "refc is 0 for");
+               LBUG();
+       }
 
-        if (cfs_atomic_dec_and_test(&ocapa->c_refc)) {
-                LASSERT(cfs_list_empty(&ocapa->c_list));
-                if (ocapa->c_site == CAPA_SITE_CLIENT) {
-                        LASSERT(cfs_list_empty(&ocapa->u.cli.lli_list));
-                } else {
-                        cfs_hlist_node_t *hnode;
+       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);
@@ -294,18 +294,35 @@ static inline int capa_opc_supported(struct lustre_capa *capa, __u64 opc)
 }
 
 struct filter_capa_key {
-        cfs_list_t              k_list;
-        struct lustre_capa_key  k_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
+enum lc_auth_id {
+       LC_ID_NONE      = 0,
+       LC_ID_PLAIN     = 1,
+       LC_ID_CONVERT   = 2
 };
 
 #define BYPASS_CAPA (struct lustre_capa *)ERR_PTR(-ENOENT)
 
+enum {
+       LU_CAPAINFO_MAX = 5
+};
+
+/** there are at most 5 FIDs in one operation, see rename,
+ *  NOTE the last one is a temporary one used for is_subdir() */
+struct lu_capainfo {
+       enum lc_auth_id          lci_auth;
+       __u32                    lci_padding;
+       struct lu_fid            lci_fid[LU_CAPAINFO_MAX];
+       struct lustre_capa      *lci_capa[LU_CAPAINFO_MAX];
+};
+
+int  lu_capainfo_init(void);
+void lu_capainfo_fini(void);
+struct lu_capainfo *lu_capainfo_get(const struct lu_env *env);
+
 /** @} capa */
 
 #endif /* __LINUX_CAPA_H_ */