| 1 | /*
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| 2 | * Copyright 2002 Massachusetts Institute of Technology
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| 3 | *
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| 4 | * Permission to use, copy, modify, and distribute this software and
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| 5 | * its documentation for any purpose and without fee is hereby
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| 6 | * granted, provided that both the above copyright notice and this
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| 7 | * permission notice appear in all copies, that both the above
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| 8 | * copyright notice and this permission notice appear in all
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| 9 | * supporting documentation, and that the name of M.I.T. not be used
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| 10 | * in advertising or publicity pertaining to distribution of the
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| 11 | * software without specific, written prior permission. M.I.T. makes
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| 12 | * no representations about the suitability of this software for any
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| 13 | * purpose. It is provided "as is" without express or implied
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| 14 | * warranty.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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| 17 | * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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| 18 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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| 20 | * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 21 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 22 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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| 23 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 24 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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| 26 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 27 | * SUCH DAMAGE.
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| 28 | *
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| 29 | * $FreeBSD: src/sys/sys/statvfs.h,v 1.3 2002/08/21 16:20:01 mike Exp $
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| 30 | */
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| 31 |
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| 32 | /** @file
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| 33 | * FreeBSD 5.1
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| 34 | */
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| 35 |
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| 36 | #ifndef _SYS_STATVFS_H_
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| 37 | #define _SYS_STATVFS_H_
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| 38 |
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| 39 | #include <sys/cdefs.h>
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| 40 | #include <sys/_types.h>
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| 41 |
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| 42 | /*
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| 43 | * POSIX says we must define the fsblkcnt_t and fsfilcnt_t types here.
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| 44 | * Note that these must be unsigned integer types, so we have to be
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| 45 | * careful in converting the signed statfs members to the unsigned
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| 46 | * statvfs members. (Well, actually, we don't -- see below -- but
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| 47 | * a quality implementation should.)
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| 48 | */
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| 49 | #ifndef _FSBLKCNT_T_DECLARED /* always declared together */
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| 50 | typedef __fsblkcnt_t fsblkcnt_t;
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| 51 | typedef __fsfilcnt_t fsfilcnt_t;
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| 52 | #define _FSBLKCNT_T_DECLARED
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| 53 | #endif
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| 54 |
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| 55 | /*
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| 56 | * The difference between `avail' and `free' is that `avail' represents
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| 57 | * space available to unprivileged processes, whereas `free' includes all
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| 58 | * unallocated space, including that reserved for privileged processes.
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| 59 | * Or at least, that's the most useful interpretation. (According to
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| 60 | * the letter of the standard, this entire interface is completely
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| 61 | * unspecified!)
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| 62 | */
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| 63 | struct statvfs {
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| 64 | fsblkcnt_t f_bavail; /* Number of blocks */
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| 65 | fsblkcnt_t f_bfree;
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| 66 | fsblkcnt_t f_blocks;
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| 67 | fsfilcnt_t f_favail; /* Number of files (e.g., inodes) */
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| 68 | fsfilcnt_t f_ffree;
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| 69 | fsfilcnt_t f_files;
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| 70 | unsigned long f_bsize; /* Size of blocks counted above */
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| 71 | unsigned long f_flag;
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| 72 | unsigned long f_frsize; /* Size of fragments */
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| 73 | unsigned long f_fsid; /* Not meaningful */
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| 74 | unsigned long f_namemax; /* Same as pathconf(_PC_NAME_MAX) */
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| 75 | };
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| 76 |
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| 77 | /* flag bits for f_flag: */
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| 78 | #define ST_RDONLY 0x1
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| 79 | #define ST_NOSUID 0x2
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| 80 |
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| 81 | __BEGIN_DECLS
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| 82 | int fstatvfs(int, struct statvfs *);
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| 83 | int statvfs(const char *__restrict, struct statvfs *__restrict);
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| 84 | __END_DECLS
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| 85 | #endif /* _SYS_STATVFS_H_ */
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