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/*
Copyright (c) 2006-2009 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 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 _POSIX_H
#define _POSIX_H
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
#include <time.h>
#ifdef linux
#ifdef __GLIBC__
#include <sys/fsuid.h>
#else
#include <unistd.h>
#endif
#endif
#ifdef HAVE_SYS_XATTR_H
#include <sys/xattr.h>
#endif
#ifdef HAVE_SYS_EXTATTR_H
#include <sys/extattr.h>
#endif
#include "xlator.h"
#include "inode.h"
#include "compat.h"
/**
* posix_fd - internal structure common to file and directory fd's
*/
struct posix_fd {
int fd; /* fd returned by the kernel */
int32_t flags; /* flags for open/creat */
char * path; /* used by setdents/getdents */
DIR * dir; /* handle returned by the kernel */
int flushwrites;
};
struct posix_private {
char *base_path;
int32_t base_path_length;
gf_lock_t lock;
char hostname[256];
/* Statistics, provides activity of the server */
struct xlator_stats stats;
struct timeval prev_fetch_time;
struct timeval init_time;
int32_t max_read; /* */
int32_t max_write; /* */
int64_t interval_read; /* Used to calculate the max_read value */
int64_t interval_write; /* Used to calculate the max_write value */
int64_t read_value; /* Total read, from init */
int64_t write_value; /* Total write, from init */
/*
In some cases, two exported volumes may reside on the same
partition on the server. Sending statvfs info for both
the volumes will lead to erroneous df output at the client,
since free space on the partition will be counted twice.
In such cases, user can disable exporting statvfs info
on one of the volumes by setting this option.
*/
gf_boolean_t export_statfs;
gf_boolean_t o_direct; /* always open files in O_DIRECT mode */
gf_boolean_t span_devices;
/*
decide whether posix_unlink does open (file), unlink (file), close (fd)
instead of just unlink (file). with the former approach there is no lockout
of access to parent directory during removal of very large files for the
entire duration of freeing of data blocks.
*/
gf_boolean_t background_unlink;
int num_devices_to_span;
dev_t *st_device;
/* a global generation number sequence is used to assign generation numbers in
sequence.
*/
uint64_t gen_seq;
gf_lock_t gen_lock;
};
#define POSIX_BASE_PATH(this) (((struct posix_private *)this->private)->base_path)
#define POSIX_BASE_PATH_LEN(this) (((struct posix_private *)this->private)->base_path_length)
#define MAKE_REAL_PATH(var, this, path) do { \
var = alloca (strlen (path) + POSIX_BASE_PATH_LEN(this) + 2); \
strcpy (var, POSIX_BASE_PATH(this)); \
strcpy (&var[POSIX_BASE_PATH_LEN(this)], path); \
} while (0)
#endif /* _POSIX_H */
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