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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 _BOOSTER_FD_H
#define _BOOSTER_FD_H
#include <libglusterfsclient.h>
#include <locking.h>
#include <list.h>
/* This struct must be updated if the fd_t in fd.h changes.
* We cannot include those headers here because unistd.h, included
* by glusterfs headers, conflicts with the syscall prototypes we
* define for booster.
*/
struct _fd {
pid_t pid;
int32_t flags;
int32_t refcount;
uint64_t flush_unique;
struct list_head inode_list;
struct _inode *inode;
struct _dict *ctx;
gf_lock_t lock; /* used ONLY for manipulating
'struct _fd_ctx' array (_ctx).*/
struct _fd_ctx *_ctx;
};
typedef struct _fd fd_t;
struct _booster_fd_set {
unsigned long fd_bits[0];
};
typedef struct _booster_fd_set booster_fd_set_t;
struct _booster_fdtable {
booster_fd_set_t *close_on_exec;
int refcount;
unsigned int max_fds;
gf_lock_t lock;
fd_t **fds;
};
typedef struct _booster_fdtable booster_fdtable_t;
void
booster_set_close_on_exec (booster_fdtable_t *fdtable, int fd);
int
booster_get_close_on_exec (booster_fdtable_t *fdtable, int fd);
extern int
booster_fd_unused_get (booster_fdtable_t *fdtable, fd_t *fdptr, int fd);
extern void
booster_fd_put (booster_fdtable_t *fdtable, int fd);
extern fd_t *
booster_fdptr_get (booster_fdtable_t *fdtable, int fd);
extern void
booster_fdptr_put (fd_t *fdptr);
extern void
booster_fdtable_destroy (booster_fdtable_t *fdtable);
booster_fdtable_t *
booster_fdtable_alloc (void);
#endif /* #ifndef _BOOSTER_FD_H */
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