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authorVikas Gorur <vikas@zresearch.com>2009-02-18 17:36:07 +0530
committerVikas Gorur <vikas@zresearch.com>2009-02-18 17:36:07 +0530
commit77adf4cd648dce41f89469dd185deec6b6b53a0b (patch)
tree02e155a5753b398ee572b45793f889b538efab6b /libglusterfs/src/inode.h
parentf3b2e6580e5663292ee113c741343c8a43ee133f (diff)
Added all files
Diffstat (limited to 'libglusterfs/src/inode.h')
-rw-r--r--libglusterfs/src/inode.h160
1 files changed, 160 insertions, 0 deletions
diff --git a/libglusterfs/src/inode.h b/libglusterfs/src/inode.h
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+++ b/libglusterfs/src/inode.h
@@ -0,0 +1,160 @@
+/*
+ Copyright (c) 2007, 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS 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
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _INODE_H
+#define _INODE_H
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdint.h>
+#include <sys/types.h>
+
+struct _inode_table;
+typedef struct _inode_table inode_table_t;
+
+struct _inode;
+typedef struct _inode inode_t;
+
+struct _dentry;
+typedef struct _dentry dentry_t;
+
+#include "list.h"
+#include "xlator.h"
+
+
+struct _inode_table {
+ pthread_mutex_t lock;
+ size_t hashsize; /* bucket size of inode hash and dentry hash */
+ char *name; /* name of the inode table, just for gf_log() */
+ inode_t *root; /* root directory inode, with number 1 */
+ xlator_t *xl; /* xlator to be called to do purge */
+ uint32_t lru_limit; /* maximum LRU cache size */
+ struct list_head *inode_hash; /* buckets for inode hash table */
+ struct list_head *name_hash; /* buckets for dentry hash table */
+ struct list_head active; /* list of inodes currently active (in an fop) */
+ uint32_t active_size; /* count of inodes in active list */
+ struct list_head lru; /* list of inodes recently used.
+ lru.next most recent */
+ uint32_t lru_size; /* count of inodes in lru list */
+ struct list_head purge; /* list of inodes to be purged soon */
+ uint32_t purge_size; /* count of inodes in purge list */
+};
+
+
+struct _dentry {
+ struct list_head inode_list; /* list of dentries of inode */
+ struct list_head hash; /* hash table pointers */
+ struct list_head parent_list; /* list of dentries under the parent */
+ inode_t *inode; /* inode of this directory entry */
+ char *name; /* name of the directory entry */
+ inode_t *parent; /* directory of the entry */
+};
+
+//#define ZR_INODE_CTX_VALUE_LEN 2
+struct _inode_ctx {
+ uint64_t key;
+ uint64_t value;
+ //uint64_t value[ZR_INODE_CTX_VALUE_LEN];
+};
+
+struct _inode {
+ inode_table_t *table; /* the table this inode belongs to */
+ gf_lock_t lock;
+ uint64_t nlookup;
+ uint64_t generation;
+ uint32_t ref; /* reference count on this inode */
+ ino_t ino; /* inode number in the storage (persistent) */
+ dict_t *ctx; /* per xlator private */
+ mode_t st_mode; /* what kind of file */
+ struct list_head fd_list; /* list of open files on this inode */
+ struct list_head dentry_list; /* list of directory entries for this inode */
+ struct list_head child_list; /* list of directory entries under this inode */
+ struct list_head hash; /* hash table pointers */
+ struct list_head list; /* active/lru/purge */
+
+ struct _inode_ctx *_ctx; /* replacement for dict_t *(inode->ctx) */
+};
+
+
+inode_table_t *
+inode_table_new (size_t lru_limit, xlator_t *xl);
+
+inode_t *
+inode_new (inode_table_t *table);
+
+inode_t *
+inode_search (inode_table_t *table, ino_t ino, const char *name);
+
+int
+inode_link (inode_t *inode, inode_t *parent,
+ const char *name, struct stat *stbuf);
+
+void
+inode_unlink (inode_t *inode,
+ inode_t *parent,
+ const char *name);
+
+inode_t *
+inode_parent (inode_t *inode, ino_t par, const char *name);
+
+inode_t *
+inode_ref (inode_t *inode);
+
+inode_t *
+inode_unref (inode_t *inode);
+
+int
+inode_lookup (inode_t *inode);
+
+int
+inode_forget (inode_t *inode,
+ uint64_t nlookup);
+
+int
+inode_rename (inode_table_t *table,
+ inode_t *olddir,
+ const char *oldname,
+ inode_t *newdir,
+ const char *newname,
+ inode_t *inode,
+ struct stat *stbuf);
+
+
+int32_t
+inode_path (inode_t *inode,
+ const char *name,
+ char **bufp);
+
+inode_t *
+inode_from_path (inode_table_t *table,
+ const char *path);
+
+int
+inode_ctx_put (inode_t *inode, xlator_t *xlator, uint64_t value);
+
+int
+inode_ctx_get (inode_t *inode, xlator_t *xlator, uint64_t *value);
+
+int
+inode_ctx_del (inode_t *inode, xlator_t *xlator, uint64_t *value);
+
+#endif /* _INODE_H */