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/*
Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef _AFR_SELFHEAL_H
#define _AFR_SELFHEAL_H
#define AFR_SH_MIN_PARTICIPANTS 2
/* Perform fop on all UP subvolumes and wait for all callbacks to return */
#define AFR_ONALL(frame, rfn, fop, args ...) do { \
afr_local_t *__local = frame->local; \
afr_private_t *__priv = frame->this->private; \
int __i = 0, __count = 0; \
\
afr_local_replies_wipe (__local, __priv); \
\
for (__i = 0; __i < __priv->child_count; __i++) { \
if (!__priv->child_up[__i]) continue; \
STACK_WIND_COOKIE (frame, rfn, (void *)(long) __i, \
__priv->children[__i], \
__priv->children[__i]->fops->fop, args); \
__count++; \
} \
syncbarrier_wait (&__local->barrier, __count); \
} while (0)
/* Perform fop on all subvolumes represented by list[] array and wait
for all callbacks to return */
#define AFR_ONLIST(list, frame, rfn, fop, args ...) do { \
afr_local_t *__local = frame->local; \
afr_private_t *__priv = frame->this->private; \
int __i = 0, __count = 0; \
\
afr_local_replies_wipe (__local, __priv); \
\
for (__i = 0; __i < __priv->child_count; __i++) { \
if (!list[__i]) continue; \
STACK_WIND_COOKIE (frame, rfn, (void *)(long) __i, \
__priv->children[__i], \
__priv->children[__i]->fops->fop, args); \
__count++; \
} \
syncbarrier_wait (&__local->barrier, __count); \
} while (0)
#define AFR_SEQ(frame, rfn, fop, args ...) do { \
afr_local_t *__local = frame->local; \
afr_private_t *__priv = frame->this->private; \
int __i = 0; \
\
afr_local_replies_wipe (__local, __priv); \
\
for (__i = 0; __i < __priv->child_count; __i++) { \
if (!__priv->child_up[__i]) continue; \
STACK_WIND_COOKIE (frame, rfn, (void *)(long) __i, \
__priv->children[__i], \
__priv->children[__i]->fops->fop, args); \
syncbarrier_wait (&__local->barrier, 1); \
} \
} while (0)
#define ALLOC_MATRIX(n, type) ({type **__ptr = NULL; \
int __i; \
__ptr = alloca0 (n * sizeof(type *)); \
for (__i = 0; __i < n; __i++) __ptr[__i] = alloca0 (n * sizeof(type)); \
__ptr;})
#define IA_EQUAL(f,s,field) (memcmp (&(f.ia_##field), &(s.ia_##field), sizeof (s.ia_##field)) == 0)
int
afr_selfheal (xlator_t *this, uuid_t gfid);
int
afr_selfheal_name (xlator_t *this, uuid_t gfid, const char *name,
void *gfid_req);
int
afr_selfheal_data (call_frame_t *frame, xlator_t *this, inode_t *inode);
int
afr_selfheal_metadata (call_frame_t *frame, xlator_t *this, inode_t *inode);
int
afr_selfheal_entry (call_frame_t *frame, xlator_t *this, inode_t *inode);
int
afr_selfheal_inodelk (call_frame_t *frame, xlator_t *this, inode_t *inode,
char *dom, off_t off, size_t size,
unsigned char *locked_on);
int
afr_selfheal_tryinodelk (call_frame_t *frame, xlator_t *this, inode_t *inode,
char *dom, off_t off, size_t size,
unsigned char *locked_on);
int
afr_selfheal_uninodelk (call_frame_t *frame, xlator_t *this, inode_t *inode,
char *dom, off_t off, size_t size,
const unsigned char *locked_on);
int
afr_selfheal_entrylk (call_frame_t *frame, xlator_t *this, inode_t *inode,
char *dom, const char *name, unsigned char *locked_on);
int
afr_selfheal_tryentrylk (call_frame_t *frame, xlator_t *this, inode_t *inode,
char *dom, const char *name, unsigned char *locked_on);
int
afr_selfheal_unentrylk (call_frame_t *frame, xlator_t *this, inode_t *inode,
char *dom, const char *name, unsigned char *locked_on);
int
afr_selfheal_unlocked_discover (call_frame_t *frame, inode_t *inode,
uuid_t gfid, struct afr_reply *replies);
inode_t *
afr_selfheal_unlocked_lookup_on (call_frame_t *frame, inode_t *parent,
const char *name, struct afr_reply *replies,
unsigned char *lookup_on, dict_t *xattr);
int
afr_selfheal_find_direction (xlator_t *this, struct afr_reply *replies,
afr_transaction_type type, unsigned char *locked_on,
unsigned char *sources, unsigned char *sinks);
int
afr_selfheal_extract_xattr (xlator_t *this, struct afr_reply *replies,
afr_transaction_type type, int *dirty, int **matrix);
int
afr_selfheal_undo_pending (call_frame_t *frame, xlator_t *this, inode_t *inode,
unsigned char *sources, unsigned char *sinks,
unsigned char *healed_sinks, afr_transaction_type type,
struct afr_reply *replies, unsigned char *locked_on);
int
afr_selfheal_recreate_entry (xlator_t *this, int dst, int source, inode_t *dir,
const char *name, inode_t *inode,
struct afr_reply *replies,
unsigned char *newentry);
int
afr_selfheal_post_op (call_frame_t *frame, xlator_t *this, inode_t *inode,
int subvol, dict_t *xattr);
call_frame_t *
afr_frame_create (xlator_t *this);
inode_t *
afr_inode_find (xlator_t *this, uuid_t gfid);
int
afr_selfheal_discover_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int op_ret, int op_errno, inode_t *inode,
struct iatt *buf, dict_t *xdata,
struct iatt *parbuf);
void
afr_replies_copy (struct afr_reply *dst, struct afr_reply *src, int count);
int
afr_selfheal_newentry_mark (call_frame_t *frame, xlator_t *this, inode_t *inode,
int source, struct afr_reply *replies,
unsigned char *sources, unsigned char *newentry);
inode_t*
afr_inode_link (inode_t *inode, struct iatt *iatt);
unsigned int
afr_success_count (struct afr_reply *replies, unsigned int count);
void
afr_log_selfheal (uuid_t gfid, xlator_t *this, int ret, char *type,
int source, unsigned char *healed_sinks);
#endif /* !_AFR_SELFHEAL_H */
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