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authorVikas Gorur <vikas@zresearch.com>2009-02-18 17:36:07 +0530
committerVikas Gorur <vikas@zresearch.com>2009-02-18 17:36:07 +0530
commit77adf4cd648dce41f89469dd185deec6b6b53a0b (patch)
tree02e155a5753b398ee572b45793f889b538efab6b /xlators/storage/posix/src/posix.h
parentf3b2e6580e5663292ee113c741343c8a43ee133f (diff)
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+/*
+ Copyright (c) 2006, 2007, 2008 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 _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>
+
+#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"
+
+#include "xattr-cache.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 */
+};
+
+struct posix_private {
+ char *base_path;
+ int32_t base_path_length;
+ dev_t base_stdev;
+
+ xattr_cache_t *xattr_cache;
+
+ /* 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 */
+};
+
+#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 */