/*
 * Copyright (c) 2005 The DragonFly Project.  All rights reserved.
 * 
 * This code is derived from software contributed to The DragonFly Project
 * by Jeroen Ruigrok van der Werven <asmodai@tendra.org>
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _SYS_STATVFS_H_
#define _SYS_STATVFS_H_

#include <machine/stdint.h>
#include <sys/uuid.h>

#ifndef _FSBLKCNT_T_DECLARED
typedef __uint64_t      fsblkcnt_t;     /* filesystem block count */
#define _FSBLKCNT_T_DECLARED
#endif
#ifndef _FSFILCNT_T_DECLARED
typedef __uint64_t      fsfilcnt_t;     /* filesystem file count */
#define _FSFILCNT_T_DECLARED
#endif
#ifndef _UID_T_DECLARED
typedef __uint32_t      uid_t;          /* user id */
#define _UID_T_DECLARED
#endif

#if __BSD_VISIBLE
struct fhandle;
struct statfs;
#endif

/*
 * The POSIX 1003.1 standard uses free and available nomenclature to mean the
 * following:
 * - free means all space, including privileged processes,
 * - avail means all space available to unprivileged processes. 
 */

struct statvfs {
        unsigned long   f_bsize;        /* file system block size */
        unsigned long   f_frsize;       /* fundamental file system block size */
        fsblkcnt_t      f_blocks;       /* total number of blocks on fs */
        fsblkcnt_t      f_bfree;        /* total number of free blocks */
        fsblkcnt_t      f_bavail;       /* total number of available blocks */
        fsfilcnt_t      f_files;        /* total number of file serial num */
        fsfilcnt_t      f_ffree;        /* total number of free file ser num */
        fsfilcnt_t      f_favail;       /* total number of avail file ser num */
        unsigned long   f_fsid;         /* file system ID */
        unsigned long   f_flag;         /* bit mask of f_flag values */
        unsigned long   f_namemax;      /* maximum filename length */
        uid_t           f_owner;        /* user that mounted the filesystem */
        unsigned int    f_type;         /* filesystem type */

        __uint64_t      f_syncreads;    /* count of sync reads since mount */
        __uint64_t      f_syncwrites;   /* count of sync writes since mount */

        __uint64_t      f_asyncreads;   /* count of async reads since mount */
        __uint64_t      f_asyncwrites;  /* count of async writes since mount */

        /*
         * DragonFly extensions - full uuid FSID and owner
         */
        uuid_t          f_fsid_uuid;
        uuid_t          f_uid_uuid;
};

/*
 * f_flag definitions
 */
#define ST_RDONLY       0x00000001      /* fs is read-only */
#define ST_NOSUID       0x00000002      /* ST_ISUID or ST_ISGID not supported */

#if __BSD_VISIBLE
/*
 * DragonFly specific flags
 */
#define ST_FSID_UUID    0x40000000      /* f_fsid_uuid field is valid */
#define ST_OWNER_UUID   0x80000000      /* f_owner_uuid field is valid */
#endif

__BEGIN_DECLS
int     fstatvfs(int, struct statvfs *);
int     statvfs(const char * __restrict, struct statvfs * __restrict);

#if __BSD_VISIBLE
int     fhstatvfs(const struct fhandle *, struct statvfs * __restrict);
int     getvfsstat(struct statfs * __restrict, struct statvfs * __restrict, long, int);
#endif
__END_DECLS

#endif /* _SYS_STATVFS_H_ */