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-rw-r--r--libglusterfs/src/xlator.h842
1 files changed, 842 insertions, 0 deletions
diff --git a/libglusterfs/src/xlator.h b/libglusterfs/src/xlator.h
new file mode 100644
index 000000000..eadc9fd1a
--- /dev/null
+++ b/libglusterfs/src/xlator.h
@@ -0,0 +1,842 @@
+/*
+ Copyright (c) 2006, 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 _XLATOR_H
+#define _XLATOR_H
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+
+#include "glusterfs.h"
+#include "logging.h"
+#include "common-utils.h"
+#include "dict.h"
+#include "compat.h"
+#include "list.h"
+
+#define FIRST_CHILD(xl) (xl->children->xlator)
+
+struct _xlator;
+typedef struct _xlator xlator_t;
+struct _dir_entry_t;
+typedef struct _dir_entry_t dir_entry_t;
+struct _gf_dirent_t;
+typedef struct _gf_dirent_t gf_dirent_t;
+struct _loc;
+typedef struct _loc loc_t;
+
+
+typedef int32_t (*event_notify_fn_t) (xlator_t *this,
+ int32_t event,
+ void *data,
+ ...);
+
+#include "list.h"
+#include "gf-dirent.h"
+#include "stack.h"
+#include "inode.h"
+#include "fd.h"
+
+struct _loc {
+ const char *path;
+ const char *name;
+ ino_t ino;
+ inode_t *inode;
+ inode_t *parent;
+};
+
+
+struct xlator_stats {
+ uint64_t nr_files; /* Number of files open via this xlator */
+ uint64_t free_disk; /* Mega bytes */
+ uint64_t total_disk_size; /* Mega Bytes */
+ uint64_t disk_usage; /* Mega bytes */
+ uint64_t disk_speed; /* MHz or Mbps */
+ uint64_t nr_clients; /* Number of client nodes */
+ uint64_t write_usage;
+ uint64_t read_usage; /* add more stats here */
+};
+
+
+
+typedef int32_t (*mop_stats_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct xlator_stats *stats);
+
+typedef int32_t (*mop_getspec_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ char *spec_data);
+
+typedef int32_t (*fop_checksum_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ uint8_t *file_checksum,
+ uint8_t *dir_checksum);
+
+typedef int32_t (*mop_setvolume_t) (call_frame_t *frame,
+ xlator_t *this,
+ const char *volume);
+
+typedef int32_t (*mop_stats_t) (call_frame_t *frame,
+ xlator_t *this,
+ int32_t flags);
+
+typedef int32_t (*mop_getspec_t) (call_frame_t *frame,
+ xlator_t *this,
+ const char *key,
+ int32_t flag);
+
+typedef int32_t (*fop_checksum_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ int32_t flag);
+
+struct xlator_mops {
+ mop_stats_t stats;
+ mop_getspec_t getspec;
+
+ mop_stats_cbk_t stats_cbk;
+ mop_getspec_cbk_t getspec_cbk;
+};
+
+
+typedef int32_t (*fop_lookup_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ inode_t *inode,
+ struct stat *buf,
+ dict_t *xattr);
+
+typedef int32_t (*fop_stat_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_fstat_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_chmod_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_fchmod_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_chown_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_fchown_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_truncate_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_ftruncate_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_utimens_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_access_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_readlink_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ const char *path);
+
+typedef int32_t (*fop_mknod_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ inode_t *inode,
+ struct stat *buf);
+
+typedef int32_t (*fop_mkdir_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ inode_t *inode,
+ struct stat *buf);
+
+typedef int32_t (*fop_unlink_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_rmdir_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_symlink_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ inode_t *inode,
+ struct stat *buf);
+
+typedef int32_t (*fop_rename_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *buf);
+
+typedef int32_t (*fop_link_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ inode_t *inode,
+ struct stat *buf);
+
+typedef int32_t (*fop_create_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ fd_t *fd,
+ inode_t *inode,
+ struct stat *buf);
+
+typedef int32_t (*fop_open_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ fd_t *fd);
+
+typedef int32_t (*fop_readv_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct iovec *vector,
+ int32_t count,
+ struct stat *stbuf);
+
+typedef int32_t (*fop_writev_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct stat *stbuf);
+
+typedef int32_t (*fop_flush_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_fsync_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_opendir_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ fd_t *fd);
+
+typedef int32_t (*fop_getdents_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ dir_entry_t *entries,
+ int32_t count);
+
+typedef int32_t (*fop_fsyncdir_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_statfs_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct statvfs *buf);
+
+typedef int32_t (*fop_setxattr_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_getxattr_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ dict_t *dict);
+
+typedef int32_t (*fop_removexattr_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_lk_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ struct flock *flock);
+
+typedef int32_t (*fop_inodelk_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_finodelk_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_entrylk_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_fentrylk_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_setdents_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno);
+
+typedef int32_t (*fop_readdir_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ gf_dirent_t *entries);
+
+typedef int32_t (*fop_xattrop_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ dict_t *xattr);
+
+typedef int32_t (*fop_fxattrop_cbk_t) (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ dict_t *xattr);
+
+typedef int32_t (*fop_lookup_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ dict_t *xattr_req);
+
+typedef int32_t (*fop_stat_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc);
+
+typedef int32_t (*fop_fstat_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd);
+
+typedef int32_t (*fop_chmod_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ mode_t mode);
+
+typedef int32_t (*fop_fchmod_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ mode_t mode);
+
+typedef int32_t (*fop_chown_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ uid_t uid,
+ gid_t gid);
+
+typedef int32_t (*fop_fchown_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ uid_t uid,
+ gid_t gid);
+
+typedef int32_t (*fop_truncate_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ off_t offset);
+
+typedef int32_t (*fop_ftruncate_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ off_t offset);
+
+typedef int32_t (*fop_utimens_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ struct timespec tv[2]);
+
+typedef int32_t (*fop_access_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ int32_t mask);
+
+typedef int32_t (*fop_readlink_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ size_t size);
+
+typedef int32_t (*fop_mknod_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ mode_t mode,
+ dev_t rdev);
+
+typedef int32_t (*fop_mkdir_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ mode_t mode);
+
+typedef int32_t (*fop_unlink_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc);
+
+typedef int32_t (*fop_rmdir_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc);
+
+typedef int32_t (*fop_symlink_t) (call_frame_t *frame,
+ xlator_t *this,
+ const char *linkname,
+ loc_t *loc);
+
+typedef int32_t (*fop_rename_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *oldloc,
+ loc_t *newloc);
+
+typedef int32_t (*fop_link_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *oldloc,
+ loc_t *newloc);
+
+typedef int32_t (*fop_create_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ int32_t flags,
+ mode_t mode,
+ fd_t *fd);
+
+typedef int32_t (*fop_open_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ int32_t flags,
+ fd_t *fd);
+
+typedef int32_t (*fop_readv_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ size_t size,
+ off_t offset);
+
+typedef int32_t (*fop_writev_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ struct iovec *vector,
+ int32_t count,
+ off_t offset);
+
+typedef int32_t (*fop_flush_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd);
+
+typedef int32_t (*fop_fsync_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ int32_t datasync);
+
+typedef int32_t (*fop_opendir_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ fd_t *fd);
+
+typedef int32_t (*fop_getdents_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ size_t size,
+ off_t offset,
+ int32_t flag);
+
+typedef int32_t (*fop_fsyncdir_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ int32_t datasync);
+
+typedef int32_t (*fop_statfs_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc);
+
+typedef int32_t (*fop_setxattr_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ dict_t *dict,
+ int32_t flags);
+
+typedef int32_t (*fop_getxattr_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ const char *name);
+
+typedef int32_t (*fop_removexattr_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ const char *name);
+
+typedef int32_t (*fop_lk_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ int32_t cmd,
+ struct flock *flock);
+
+typedef int32_t (*fop_inodelk_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ int32_t cmd,
+ struct flock *flock);
+
+typedef int32_t (*fop_finodelk_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ int32_t cmd,
+ struct flock *flock);
+
+typedef int32_t (*fop_entrylk_t) (call_frame_t *frame,
+ xlator_t *this, loc_t *loc,
+ const char *basename, entrylk_cmd cmd,
+ entrylk_type type);
+
+typedef int32_t (*fop_fentrylk_t) (call_frame_t *frame,
+ xlator_t *this, fd_t *fd,
+ const char *basename, entrylk_cmd cmd,
+ entrylk_type type);
+
+typedef int32_t (*fop_setdents_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ int32_t flags,
+ dir_entry_t *entries,
+ int32_t count);
+
+typedef int32_t (*fop_readdir_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ size_t size,
+ off_t offset);
+
+typedef int32_t (*fop_xattrop_t) (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ gf_xattrop_flags_t optype,
+ dict_t *xattr);
+
+typedef int32_t (*fop_fxattrop_t) (call_frame_t *frame,
+ xlator_t *this,
+ fd_t *fd,
+ gf_xattrop_flags_t optype,
+ dict_t *xattr);
+
+struct xlator_fops {
+ fop_lookup_t lookup;
+ fop_stat_t stat;
+ fop_fstat_t fstat;
+ fop_chmod_t chmod;
+ fop_fchmod_t fchmod;
+ fop_chown_t chown;
+ fop_fchown_t fchown;
+ fop_truncate_t truncate;
+ fop_ftruncate_t ftruncate;
+ fop_utimens_t utimens;
+ fop_access_t access;
+ fop_readlink_t readlink;
+ fop_mknod_t mknod;
+ fop_mkdir_t mkdir;
+ fop_unlink_t unlink;
+ fop_rmdir_t rmdir;
+ fop_symlink_t symlink;
+ fop_rename_t rename;
+ fop_link_t link;
+ fop_create_t create;
+ fop_open_t open;
+ fop_readv_t readv;
+ fop_writev_t writev;
+ fop_flush_t flush;
+ fop_fsync_t fsync;
+ fop_opendir_t opendir;
+ fop_readdir_t readdir;
+ fop_fsyncdir_t fsyncdir;
+ fop_statfs_t statfs;
+ fop_setxattr_t setxattr;
+ fop_getxattr_t getxattr;
+ fop_removexattr_t removexattr;
+ fop_lk_t lk;
+ fop_inodelk_t inodelk;
+ fop_finodelk_t finodelk;
+ fop_entrylk_t entrylk;
+ fop_fentrylk_t fentrylk;
+ fop_setdents_t setdents;
+ fop_getdents_t getdents;
+ fop_checksum_t checksum;
+ fop_xattrop_t xattrop;
+ fop_fxattrop_t fxattrop;
+
+ /* these entries are used for a typechecking hack in STACK_WIND _only_ */
+ fop_lookup_cbk_t lookup_cbk;
+ fop_stat_cbk_t stat_cbk;
+ fop_fstat_cbk_t fstat_cbk;
+ fop_chmod_cbk_t chmod_cbk;
+ fop_fchmod_cbk_t fchmod_cbk;
+ fop_chown_cbk_t chown_cbk;
+ fop_fchown_cbk_t fchown_cbk;
+ fop_truncate_cbk_t truncate_cbk;
+ fop_ftruncate_cbk_t ftruncate_cbk;
+ fop_utimens_cbk_t utimens_cbk;
+ fop_access_cbk_t access_cbk;
+ fop_readlink_cbk_t readlink_cbk;
+ fop_mknod_cbk_t mknod_cbk;
+ fop_mkdir_cbk_t mkdir_cbk;
+ fop_unlink_cbk_t unlink_cbk;
+ fop_rmdir_cbk_t rmdir_cbk;
+ fop_symlink_cbk_t symlink_cbk;
+ fop_rename_cbk_t rename_cbk;
+ fop_link_cbk_t link_cbk;
+ fop_create_cbk_t create_cbk;
+ fop_open_cbk_t open_cbk;
+ fop_readv_cbk_t readv_cbk;
+ fop_writev_cbk_t writev_cbk;
+ fop_flush_cbk_t flush_cbk;
+ fop_fsync_cbk_t fsync_cbk;
+ fop_opendir_cbk_t opendir_cbk;
+ fop_readdir_cbk_t readdir_cbk;
+ fop_fsyncdir_cbk_t fsyncdir_cbk;
+ fop_statfs_cbk_t statfs_cbk;
+ fop_setxattr_cbk_t setxattr_cbk;
+ fop_getxattr_cbk_t getxattr_cbk;
+ fop_removexattr_cbk_t removexattr_cbk;
+ fop_lk_cbk_t lk_cbk;
+ fop_inodelk_cbk_t inodelk_cbk;
+ fop_finodelk_cbk_t finodelk_cbk;
+ fop_entrylk_cbk_t entrylk_cbk;
+ fop_fentrylk_cbk_t fentrylk_cbk;
+ fop_setdents_cbk_t setdents_cbk;
+ fop_getdents_cbk_t getdents_cbk;
+ fop_checksum_cbk_t checksum_cbk;
+ fop_xattrop_cbk_t xattrop_cbk;
+ fop_fxattrop_cbk_t fxattrop_cbk;
+};
+
+typedef int32_t (*cbk_forget_t) (xlator_t *this,
+ inode_t *inode);
+
+typedef int32_t (*cbk_release_t) (xlator_t *this,
+ fd_t *fd);
+
+struct xlator_cbks {
+ cbk_forget_t forget;
+ cbk_release_t release;
+ cbk_release_t releasedir;
+};
+
+typedef struct xlator_list {
+ xlator_t *xlator;
+ struct xlator_list *next;
+} xlator_list_t;
+
+/* Add possible new type of option you may need */
+typedef enum {
+ GF_OPTION_TYPE_ANY = 0,
+ GF_OPTION_TYPE_STR,
+ GF_OPTION_TYPE_INT,
+ GF_OPTION_TYPE_SIZET,
+ GF_OPTION_TYPE_PERCENT,
+ GF_OPTION_TYPE_BOOL,
+ GF_OPTION_TYPE_XLATOR,
+ GF_OPTION_TYPE_PATH,
+ GF_OPTION_TYPE_TIME,
+} volume_option_type_t;
+
+#define ZR_VOLUME_MAX_NUM_KEY 4
+#define ZR_OPTION_MAX_ARRAY_SIZE 64
+
+/* Each translator should define this structure */
+typedef struct volume_options {
+ char *key[ZR_VOLUME_MAX_NUM_KEY];
+ /* different key, same meaning */
+ volume_option_type_t type;
+ int64_t min; /* -1 means no range */
+ int64_t max; /* -1 means no range */
+ char *value[ZR_OPTION_MAX_ARRAY_SIZE];
+ /* If specified, will check for one of
+ the value from this array */
+ char *description; /* about the key */
+} volume_option_t;
+
+typedef struct vol_opt_list {
+ struct list_head list;
+ volume_option_t *given_opt;
+} volume_opt_list_t;
+
+struct _xlator {
+ /* Built during parsing */
+ char *name;
+ char *type;
+ xlator_t *next;
+ xlator_t *prev;
+ xlator_list_t *parents;
+ xlator_list_t *children;
+ dict_t *options;
+
+ /* Set after doing dlopen() */
+ struct xlator_fops *fops;
+ struct xlator_mops *mops;
+ struct xlator_cbks *cbks;
+ struct list_head volume_options; /* list of volume_option_t */
+
+ void (*fini) (xlator_t *this);
+ int32_t (*init) (xlator_t *this);
+ event_notify_fn_t notify;
+
+ /* Misc */
+ glusterfs_ctx_t *ctx;
+ inode_table_t *itable;
+ char ready;
+ char trace;
+ char init_succeeded;
+ void *private;
+};
+
+int validate_xlator_volume_options (xlator_t *xl, volume_option_t *opt);
+
+int32_t xlator_set_type (xlator_t *xl, const char *type);
+
+xlator_t *file_to_xlator_tree (glusterfs_ctx_t *ctx,
+ FILE *fp);
+
+
+int32_t xlator_tree_init (xlator_t *xl);
+int32_t xlator_tree_free (xlator_t *xl);
+
+void xlator_tree_fini (xlator_t *xl);
+
+void xlator_foreach (xlator_t *this,
+ void (*fn) (xlator_t *each,
+ void *data),
+ void *data);
+
+xlator_t *xlator_search_by_name (xlator_t *any, const char *name);
+
+void inode_destroy_notify (inode_t *inode, const char *xlname);
+
+int loc_copy (loc_t *dst, loc_t *src);
+#define loc_dup(src, dst) loc_copy(dst, src)
+void loc_wipe (loc_t *loc);
+
+#define GF_STAT_PRINT_FMT_STR "%"PRIx64",%"PRIx64",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx64",%"PRIx64",%"PRIx32",%"PRIx64",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32"\n"
+
+#define GF_STAT_SCAN_FMT_STR "%"SCNx64",%"SCNx64",%"SCNx32",%"SCNx32",%"SCNx32",%"SCNx32",%"SCNx64",%"SCNx64",%"SCNx32",%"SCNx64",%"SCNx32",%"SCNx32",%"SCNx32",%"SCNx32",%"SCNx32",%"SCNx32"\n"
+
+#define GF_STATFS_PRINT_FMT_STR "%"PRIx32",%"PRIx32",%"PRIx64",%"PRIx64",%"PRIx64",%"PRIx64",%"PRIx64",%"PRIx64",%"PRIx32",%"PRIx32",%"PRIx32"\n"
+
+#define GF_STATFS_SCAN_FMT_STR "%"SCNx32",%"SCNx32",%"SCNx64",%"SCNx64",%"SCNx64",%"SCNx64",%"SCNx64",%"SCNx64",%"SCNx32",%"SCNx32",%"SCNx32"\n"
+
+#endif /* _XLATOR_H */
+