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104 lines
3.8 KiB
Groff
104 lines
3.8 KiB
Groff
.\" Copyright (c) 1989, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)statfs.2 8.3 (Berkeley) 2/11/94
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.\"
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.TH STATFS 2 "23 January 1997" GNO "System Calls"
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.SH NAME
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.BR statfs
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\- get file system statistics
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.SH SYNOPSIS
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#include <sys/param.h>
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.br
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#include <sys/mount.h>
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.sp 1
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int
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\fBstatfs\fR (const char *\fIpath\fR, struct statfs *\fIbuf\fR);
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.sp 1
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int
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\fBfstatfs\fR (int \fIfd\fR, struct statfs *\fIbuf\fR);
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.SH DESCRIPTION
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.BR statfs
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returns information about a mounted file system.
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.I path
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is the path name of any file within the mounted filesystem.
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.I buf
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is a pointer to a
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.BR statfs
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structure defined as follows:
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.nf
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typedef quad fsid_t;
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struct statfs {
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long f_type; /* FST type (see below) */
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long f_bsize; /* fundamental file system block size */
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long f_blocks; /* total data blocks in file system */
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long f_bfree; /* free blocks in fs */
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long f_bavail; /* free blocks avail to non-superuser */
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long f_files; /* total file nodes in file system */
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long f_ffree; /* free file nodes in fs */
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fsid_t f_fsid; /* file system id (GS/OS device number) */
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long f_spare[7]; /* reserved */
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}
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/*
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* File system types.
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*/
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#define MOUNT_PRODOS 0x0001 /* ProDOS or SOS */
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#define MOUNT_DOS_33 0x0002 /* DOS 3.3 */
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#define MOUNT_DOS_32 0x0003 /* DOS 3.1 or 3.2 */
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#define MOUNT_PASCAL 0x0004 /* Apple II Pascal */
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#define MOUNT_MFS 0x0005 /* Macintosh (MFS) */
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#define MOUNT_HFS 0x0006 /* Macintosh (HFS) */
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#define MOUNT_LISA 0x0007 /* Lisa */
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#define MOUNT_CPM 0x0008 /* Apple CP/M */
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#define MOUNT_MSDOS 0x000A /* MS/DOS */
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#define MOUNT_HIGHS 0x000B /* High Sierra */
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#define MOUNT_CD9660 0x000C /* ISO 9660 (CD-ROM) */
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#define MOUNT_APLSHAR 0x000D /* AppleShare */
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.fi
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.LP
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Fields that are undefined for a particular file system are set to -1.
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.BR fstatfs
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returns the same information about an open file referenced by descriptor
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.IR fd .
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.SH RETURN VALUES
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Upon successful completion, a value of 0 is returned.
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Otherwise, -1 is returned and the global variable
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.IR errno
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is set to indicate the error.
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.SH HISTORY
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The
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.BR statfs
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function first appeared in 4.4BSD.
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