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/*
Copyright (c) 2010 Gluster, Inc. <http://www.gluster.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 Affero 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
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _STRIPE_H_
#define _STRIPE_H_
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "xlator.h"
#include "logging.h"
#include "defaults.h"
#include "common-utils.h"
#include "compat.h"
#include "compat-errno.h"
#include "stripe-mem-types.h"
#include "libxlator.h"
#include <fnmatch.h>
#include <signal.h>
#define STRIPE_STACK_UNWIND(fop, frame, params ...) do { \
stripe_local_t *__local = NULL; \
if (frame) { \
__local = frame->local; \
frame->local = NULL; \
} \
STACK_UNWIND_STRICT (fop, frame, params); \
if (__local) { \
stripe_local_wipe(__local); \
GF_FREE (__local); \
} \
} while (0)
#define STRIPE_STACK_DESTROY(frame) do { \
stripe_local_t *__local = NULL; \
__local = frame->local; \
frame->local = NULL; \
STACK_DESTROY (frame->root); \
if (__local) { \
stripe_local_wipe (__local); \
GF_FREE (__local); \
} \
} while (0)
/**
* struct stripe_options : This keeps the pattern and the block-size
* information, which is used for striping on a file.
*/
struct stripe_options {
struct stripe_options *next;
char path_pattern[256];
uint64_t block_size;
};
/**
* Private structure for stripe translator
*/
struct stripe_private {
struct stripe_options *pattern;
xlator_t **xl_array;
uint64_t block_size;
gf_lock_t lock;
uint8_t nodes_down;
int8_t first_child_down;
int8_t child_count;
int8_t *state; /* Current state of child node */
gf_boolean_t xattr_supported; /* default yes */
char vol_uuid[UUID_SIZE + 1];
};
/**
* Used to keep info about the replies received from fops->readv calls
*/
struct readv_replies {
struct iovec *vector;
int32_t count; //count of vector
int32_t op_ret; //op_ret of readv
int32_t op_errno;
int32_t requested_size;
struct iatt stbuf; /* 'stbuf' is also a part of reply */
};
typedef struct _stripe_fd_ctx {
off_t stripe_size;
int stripe_count;
int static_array;
xlator_t **xl_array;
} stripe_fd_ctx_t;
/**
* Local structure to be passed with all the frames in case of STACK_WIND
*/
struct stripe_local; /* this itself is used inside the structure; */
struct stripe_local {
struct stripe_local *next;
call_frame_t *orig_frame;
stripe_fd_ctx_t *fctx;
/* Used by _cbk functions */
struct iatt stbuf;
struct iatt pre_buf;
struct iatt post_buf;
struct iatt preparent;
struct iatt postparent;
off_t stbuf_size;
off_t prebuf_size;
off_t postbuf_size;
off_t preparent_size;
off_t postparent_size;
blkcnt_t stbuf_blocks;
blkcnt_t prebuf_blocks;
blkcnt_t postbuf_blocks;
blkcnt_t preparent_blocks;
blkcnt_t postparent_blocks;
struct readv_replies *replies;
struct statvfs statvfs_buf;
dir_entry_t *entry;
int8_t revalidate;
int8_t failed;
int8_t unwind;
size_t readv_size;
int32_t entry_count;
int32_t node_index;
int32_t call_count;
int32_t wind_count; /* used instead of child_cound
in case of read and write */
int32_t op_ret;
int32_t op_errno;
int32_t count;
int32_t flags;
char *name;
inode_t *inode;
loc_t loc;
loc_t loc2;
/* For File I/O fops */
dict_t *dict;
struct marker_str marker;
/* General usage */
off_t offset;
off_t stripe_size;
int xattr_self_heal_needed;
int entry_self_heal_needed;
int8_t *list;
struct gf_flock lock;
fd_t *fd;
void *value;
struct iobref *iobref;
gf_dirent_t entries;
};
typedef struct stripe_local stripe_local_t;
typedef struct stripe_private stripe_private_t;
#endif /* _STRIPE_H_ */
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