freebsd-nq/sys/sys/statvfs.h
Mike Barcroft abbd890233 o Merge <machine/ansi.h> and <machine/types.h> into a new header
called <machine/_types.h>.
o <machine/ansi.h> will continue to live so it can define MD clock
  macros, which are only MD because of gratuitous differences between
  architectures.
o Change all headers to make use of this.  This mainly involves
  changing:
    #ifdef _BSD_FOO_T_
    typedef	_BSD_FOO_T_	foo_t;
    #undef _BSD_FOO_T_
    #endif
  to:
    #ifndef _FOO_T_DECLARED
    typedef	__foo_t	foo_t;
    #define	_FOO_T_DECLARED
    #endif

Concept by:	bde
Reviewed by:	jake, obrien
2002-08-21 16:20:02 +00:00

82 lines
3.1 KiB
C

/*
* Copyright 2002 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. 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.
*
* $FreeBSD$
*/
#ifndef _SYS_STATVFS_H_
#define _SYS_STATVFS_H_
#include <sys/cdefs.h>
#include <sys/_types.h>
/*
* POSIX says we must define the fsblkcnt_t and fsfilcnt_t types here.
* Note that these must be unsigned integer types, so we have to be
* careful in converting the signed statfs members to the unsigned
* statvfs members. (Well, actually, we don't -- see below -- but
* a quality implementation should.)
*/
#ifndef _FSBLKCNT_T_DECLARED /* always declared together */
typedef __fsblkcnt_t fsblkcnt_t;
typedef __fsfilcnt_t fsfilcnt_t;
#define _FSBLKCNT_T_DECLARED
#endif
/*
* The difference between `avail' and `free' is that `avail' represents
* space available to unprivileged processes, whereas `free' includes all
* unallocated space, including that reserved for privileged processes.
* Or at least, that's the most useful interpretation. (According to
* the letter of the standard, this entire interface is completely
* unspecified!)
*/
struct statvfs {
fsblkcnt_t f_bavail; /* Number of blocks */
fsblkcnt_t f_bfree;
fsblkcnt_t f_blocks;
fsfilcnt_t f_favail; /* Number of files (e.g., inodes) */
fsfilcnt_t f_ffree;
fsfilcnt_t f_files;
unsigned long f_bsize; /* Size of blocks counted above */
unsigned long f_flag;
unsigned long f_frsize; /* Size of fragments */
unsigned long f_fsid; /* Not meaningful */
unsigned long f_namemax; /* Same as pathconf(_PC_NAME_MAX) */
};
/* flag bits for f_flag: */
#define ST_RDONLY 0x1
#define ST_NOSUID 0x2
__BEGIN_DECLS
int fstatvfs(int, struct statvfs *);
int statvfs(const char *__restrict, struct statvfs *__restrict);
__END_DECLS
#endif /* _SYS_STATVFS_H_ */