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LU-1330 obdclass: splits server-side object stack from client
[fs/lustre-release.git] / lustre / llite / llite_rmtacl.c
index 924092d..8eca4a3 100644 (file)
@@ -1,26 +1,43 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
  *
- *   lustre/llite/llite_rmtacl.c
- *   Lustre Remote User Access Control List.
- *   Author: Fan Yong <fanyong@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
- * Copyright (c) 2004-2007 Cluster File Systems, Inc.
+ * 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 file is part of Lustre, http://www.lustre.org.
+ * 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 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.
+ * 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
  *
- *   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.
+ * 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.
  *
- *   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.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2008, 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/llite/llite_rmtacl.c
+ *
+ * Lustre Remote User Access Control List.
+ *
+ * Author: Fan Yong <fanyong@clusterfs.com>
  */
 
 #define DEBUG_SUBSYSTEM S_LLITE
@@ -28,6 +45,7 @@
 #ifdef CONFIG_FS_POSIX_ACL
 
 #include <lustre_lite.h>
+#include <lustre_eacl.h>
 #include "llite_internal.h"
 
 static inline __u32 rce_hashfunc(uid_t id)
@@ -73,8 +91,8 @@ static struct rmtacl_ctl_entry *rce_alloc(pid_t key, int ops)
 
 static void rce_free(struct rmtacl_ctl_entry *rce)
 {
-        if (!list_empty(&rce->rce_list))
-                list_del(&rce->rce_list);
+        if (!cfs_list_empty(&rce->rce_list))
+                cfs_list_del(&rce->rce_list);
 
         OBD_FREE_PTR(rce);
 }
@@ -83,9 +101,9 @@ static struct rmtacl_ctl_entry *__rct_search(struct rmtacl_ctl_table *rct,
                                            pid_t key)
 {
         struct rmtacl_ctl_entry *rce;
-        struct list_head *head = &rct->rct_entries[rce_hashfunc(key)];
+        cfs_list_t *head = &rct->rct_entries[rce_hashfunc(key)];
 
-        list_for_each_entry(rce, head, rce_list)
+        cfs_list_for_each_entry(rce, head, rce_list)
                 if (rce->rce_key == key)
                         return rce;
 
@@ -94,12 +112,12 @@ static struct rmtacl_ctl_entry *__rct_search(struct rmtacl_ctl_table *rct,
 
 struct rmtacl_ctl_entry *rct_search(struct rmtacl_ctl_table *rct, pid_t key)
 {
-        struct rmtacl_ctl_entry *rce;
+       struct rmtacl_ctl_entry *rce;
 
-        spin_lock(&rct->rct_lock);
-        rce = __rct_search(rct, key);
-        spin_unlock(&rct->rct_lock);
-        return rce;
+       spin_lock(&rct->rct_lock);
+       rce = __rct_search(rct, key);
+       spin_unlock(&rct->rct_lock);
+       return rce;
 }
 
 int rct_add(struct rmtacl_ctl_table *rct, pid_t key, int ops)
@@ -110,54 +128,54 @@ int rct_add(struct rmtacl_ctl_table *rct, pid_t key, int ops)
         if (rce == NULL)
                 return -ENOMEM;
 
-        spin_lock(&rct->rct_lock);
-        e = __rct_search(rct, key);
-        if (unlikely(e != NULL)) {
-                CWARN("Unexpected stale rmtacl_entry found: "
-                      "[key: %d] [ops: %d]\n", (int)key, ops);
-                rce_free(e);
-        }
-        list_add_tail(&rce->rce_list, &rct->rct_entries[rce_hashfunc(key)]);
-        spin_unlock(&rct->rct_lock);
-
-        return 0;
+       spin_lock(&rct->rct_lock);
+       e = __rct_search(rct, key);
+       if (unlikely(e != NULL)) {
+               CWARN("Unexpected stale rmtacl_entry found: "
+                     "[key: %d] [ops: %d]\n", (int)key, ops);
+               rce_free(e);
+       }
+       cfs_list_add_tail(&rce->rce_list, &rct->rct_entries[rce_hashfunc(key)]);
+       spin_unlock(&rct->rct_lock);
+
+       return 0;
 }
 
 int rct_del(struct rmtacl_ctl_table *rct, pid_t key)
 {
-        struct rmtacl_ctl_entry *rce;
+       struct rmtacl_ctl_entry *rce;
 
-        spin_lock(&rct->rct_lock);
-        rce = __rct_search(rct, key);
-        if (rce)
-                rce_free(rce);
-        spin_unlock(&rct->rct_lock);
+       spin_lock(&rct->rct_lock);
+       rce = __rct_search(rct, key);
+       if (rce)
+               rce_free(rce);
+       spin_unlock(&rct->rct_lock);
 
-        return rce ? 0 : -ENOENT;
+       return rce ? 0 : -ENOENT;
 }
 
 void rct_init(struct rmtacl_ctl_table *rct)
 {
-        int i;
+       int i;
 
-        spin_lock_init(&rct->rct_lock);
-        for (i = 0; i < RCE_HASHES; i++)
-                CFS_INIT_LIST_HEAD(&rct->rct_entries[i]);
+       spin_lock_init(&rct->rct_lock);
+       for (i = 0; i < RCE_HASHES; i++)
+               CFS_INIT_LIST_HEAD(&rct->rct_entries[i]);
 }
 
 void rct_fini(struct rmtacl_ctl_table *rct)
 {
-        struct rmtacl_ctl_entry *rce;
-        int i;
-
-        spin_lock(&rct->rct_lock);
-        for (i = 0; i < RCE_HASHES; i++)
-                while (!list_empty(&rct->rct_entries[i])) {
-                        rce = list_entry(rct->rct_entries[i].next,
-                                         struct rmtacl_ctl_entry, rce_list);
-                        rce_free(rce);
-                }
-        spin_unlock(&rct->rct_lock);
+       struct rmtacl_ctl_entry *rce;
+       int i;
+
+       spin_lock(&rct->rct_lock);
+       for (i = 0; i < RCE_HASHES; i++)
+               while (!cfs_list_empty(&rct->rct_entries[i])) {
+                       rce = cfs_list_entry(rct->rct_entries[i].next,
+                                            struct rmtacl_ctl_entry, rce_list);
+                       rce_free(rce);
+               }
+       spin_unlock(&rct->rct_lock);
 }
 
 
@@ -181,8 +199,8 @@ static struct eacl_entry *ee_alloc(pid_t key, struct lu_fid *fid, int type,
 
 void ee_free(struct eacl_entry *ee)
 {
-        if (!list_empty(&ee->ee_list))
-                list_del(&ee->ee_list);
+        if (!cfs_list_empty(&ee->ee_list))
+                cfs_list_del(&ee->ee_list);
 
         if (ee->ee_acl)
                 lustre_ext_acl_xattr_free(ee->ee_acl);
@@ -194,14 +212,14 @@ static struct eacl_entry *__et_search_del(struct eacl_table *et, pid_t key,
                                         struct lu_fid *fid, int type)
 {
         struct eacl_entry *ee;
-        struct list_head *head = &et->et_entries[ee_hashfunc(key)];
+        cfs_list_t *head = &et->et_entries[ee_hashfunc(key)];
 
         LASSERT(fid != NULL);
-        list_for_each_entry(ee, head, ee_list)
+        cfs_list_for_each_entry(ee, head, ee_list)
                 if (ee->ee_key == key) {
                         if (lu_fid_eq(&ee->ee_fid, fid) &&
                             ee->ee_type == type) {
-                                list_del_init(&ee->ee_list);
+                                cfs_list_del_init(&ee->ee_list);
                                 return ee;
                         }
                 }
@@ -212,25 +230,25 @@ static struct eacl_entry *__et_search_del(struct eacl_table *et, pid_t key,
 struct eacl_entry *et_search_del(struct eacl_table *et, pid_t key,
                                  struct lu_fid *fid, int type)
 {
-        struct eacl_entry *ee;
+       struct eacl_entry *ee;
 
-        spin_lock(&et->et_lock);
-        ee = __et_search_del(et, key, fid, type);
-        spin_unlock(&et->et_lock);
-        return ee;
+       spin_lock(&et->et_lock);
+       ee = __et_search_del(et, key, fid, type);
+       spin_unlock(&et->et_lock);
+       return ee;
 }
 
 void et_search_free(struct eacl_table *et, pid_t key)
 {
-        struct eacl_entry *ee, *next;
-        struct list_head *head = &et->et_entries[ee_hashfunc(key)];
+       struct eacl_entry *ee, *next;
+       cfs_list_t *head = &et->et_entries[ee_hashfunc(key)];
 
-        spin_lock(&et->et_lock);
-        list_for_each_entry_safe(ee, next, head, ee_list)
-                if (ee->ee_key == key)
-                        ee_free(ee);
+       spin_lock(&et->et_lock);
+       cfs_list_for_each_entry_safe(ee, next, head, ee_list)
+               if (ee->ee_key == key)
+                       ee_free(ee);
 
-        spin_unlock(&et->et_lock);
+       spin_unlock(&et->et_lock);
 }
 
 int ee_add(struct eacl_table *et, pid_t key, struct lu_fid *fid, int type,
@@ -242,42 +260,42 @@ int ee_add(struct eacl_table *et, pid_t key, struct lu_fid *fid, int type,
         if (ee == NULL)
                 return -ENOMEM;
 
-        spin_lock(&et->et_lock);
-        e = __et_search_del(et, key, fid, type);
-        if (unlikely(e != NULL)) {
-                CWARN("Unexpected stale eacl_entry found: "
-                      "[key: %d] [fid: "DFID"] [type: %d]\n",
-                      (int)key, PFID(fid), type);
-                ee_free(e);
-        }
-        list_add_tail(&ee->ee_list, &et->et_entries[ee_hashfunc(key)]);
-        spin_unlock(&et->et_lock);
-
-        return 0;
+       spin_lock(&et->et_lock);
+       e = __et_search_del(et, key, fid, type);
+       if (unlikely(e != NULL)) {
+               CWARN("Unexpected stale eacl_entry found: "
+                     "[key: %d] [fid: "DFID"] [type: %d]\n",
+                     (int)key, PFID(fid), type);
+               ee_free(e);
+       }
+       cfs_list_add_tail(&ee->ee_list, &et->et_entries[ee_hashfunc(key)]);
+       spin_unlock(&et->et_lock);
+
+       return 0;
 }
 
 void et_init(struct eacl_table *et)
 {
-        int i;
+       int i;
 
-        spin_lock_init(&et->et_lock);
-        for (i = 0; i < EE_HASHES; i++)
-                CFS_INIT_LIST_HEAD(&et->et_entries[i]);
+       spin_lock_init(&et->et_lock);
+       for (i = 0; i < EE_HASHES; i++)
+               CFS_INIT_LIST_HEAD(&et->et_entries[i]);
 }
 
 void et_fini(struct eacl_table *et)
 {
-        struct eacl_entry *ee;
-        int i;
-
-        spin_lock(&et->et_lock);
-        for (i = 0; i < EE_HASHES; i++)
-                while (!list_empty(&et->et_entries[i])) {
-                        ee = list_entry(et->et_entries[i].next,
-                                        struct eacl_entry, ee_list);
-                        ee_free(ee);
-                }
-        spin_unlock(&et->et_lock);
+       struct eacl_entry *ee;
+       int i;
+
+       spin_lock(&et->et_lock);
+       for (i = 0; i < EE_HASHES; i++)
+               while (!cfs_list_empty(&et->et_entries[i])) {
+                       ee = cfs_list_entry(et->et_entries[i].next,
+                                           struct eacl_entry, ee_list);
+                       ee_free(ee);
+               }
+       spin_unlock(&et->et_lock);
 }
 
 #endif