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/*
Copyright (c) 2006-2009 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 _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#ifndef _UNIFY_H
#define _UNIFY_H
#include "scheduler.h"
#include "list.h"
#define MAX_DIR_ENTRY_STRING (32 * 1024)
#define ZR_UNIFY_SELF_HEAL_OFF 0
#define ZR_UNIFY_FG_SELF_HEAL 1
#define ZR_UNIFY_BG_SELF_HEAL 2
/* Sometimes one should use completely random numbers.. its good :p */
#define UNIFY_SELF_HEAL_GETDENTS_COUNT 512
#define NS(xl) (((unify_private_t *)xl->private)->namespace)
/* This is used to allocate memory for local structure */
#define INIT_LOCAL(fr, loc) \
do { \
loc = CALLOC (1, sizeof (unify_local_t)); \
ERR_ABORT (loc); \
if (!loc) { \
STACK_UNWIND (fr, -1, ENOMEM); \
return 0; \
} \
fr->local = loc; \
loc->op_ret = -1; \
loc->op_errno = ENOENT; \
} while (0)
struct unify_private {
/* Update this structure depending on requirement */
void *scheduler; /* THIS SHOULD BE THE FIRST VARIABLE,
if xlator is using scheduler */
struct sched_ops *sched_ops; /* Scheduler options */
xlator_t *namespace; /* ptr to namespace xlator */
xlator_t **xl_array;
gf_boolean_t optimist;
int16_t child_count;
int16_t num_child_up;
uint8_t self_heal;
uint8_t is_up;
uint64_t inode_generation;
gf_lock_t lock;
};
typedef struct unify_private unify_private_t;
struct unify_self_heal_struct {
uint8_t dir_checksum[NAME_MAX];
uint8_t ns_dir_checksum[NAME_MAX];
uint8_t file_checksum[NAME_MAX];
uint8_t ns_file_checksum[NAME_MAX];
off_t *offset_list;
int *count_list;
dir_entry_t **entry_list;
};
struct _unify_local_t {
int32_t call_count;
int32_t op_ret;
int32_t op_errno;
mode_t mode;
off_t offset;
dev_t dev;
uid_t uid;
gid_t gid;
int32_t flags;
int32_t entry_count;
int32_t count; // dir_entry_t count;
fd_t *fd;
struct stat stbuf;
struct statvfs statvfs_buf;
struct timespec tv[2];
char *name;
int32_t revalidate;
ino_t st_ino;
nlink_t st_nlink;
dict_t *dict;
int16_t *list;
int16_t *new_list; /* Used only in case of rename */
int16_t index;
int32_t failed;
int32_t return_eio; /* Used in case of different st-mode
present for a given path */
uint64_t inode_generation; /* used to store the per directory
* inode_generation. Got from inode's ctx
* of directory inodes
*/
struct unify_self_heal_struct *sh_struct;
loc_t loc1, loc2;
};
typedef struct _unify_local_t unify_local_t;
int32_t zr_unify_self_heal (call_frame_t *frame,
xlator_t *this,
unify_local_t *local);
#endif /* _UNIFY_H */
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