0c3983b25a
. add bsd-style MLINKS to minix man set, restoring aliases (e.g. man add64 -> int64) . update daily cron script to run makewhatis and restore makewhatis in man Makefile (makedb), restores functionality of man -k . netbsd imports of man, mdocml, makewhatis, libutil, apropos . update man.conf with manpage locations, restoring man [-s] <section> . throws out some obsolete manpages
173 lines
3.6 KiB
Groff
173 lines
3.6 KiB
Groff
.\" $NetBSD: opendisk.3,v 1.11 2008/04/30 13:10:52 martin Exp $
|
|
.\"
|
|
.\" Copyright (c) 1997, 2001 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Luke Mewburn.
|
|
.\"
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
.\"
|
|
.Dd December 11, 2001
|
|
.Dt OPENDISK 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm opendisk
|
|
.Nd open a disk partition
|
|
.Sh LIBRARY
|
|
.Lb libutil
|
|
.Sh SYNOPSIS
|
|
.In util.h
|
|
.Ft int
|
|
.Fo opendisk
|
|
.Fa "const char *path"
|
|
.Fa "int flags"
|
|
.Fa "char *buf"
|
|
.Fa "size_t buflen"
|
|
.Fa "int iscooked"
|
|
.Fc
|
|
.Sh DESCRIPTION
|
|
.Fn opendisk
|
|
opens
|
|
.Fa path ,
|
|
for reading and/or writing as specified by the argument
|
|
.Fa flags
|
|
using
|
|
.Xr open 2 ,
|
|
and the file descriptor is returned to the caller.
|
|
.Fa buf
|
|
is used to store the resultant filename.
|
|
.Fa buflen
|
|
is the size, in bytes, of the array referenced by
|
|
.Fa buf
|
|
(usually
|
|
.Dv MAXPATHLEN
|
|
bytes).
|
|
.Fa iscooked
|
|
controls which paths in
|
|
.Pa /dev
|
|
are tried.
|
|
.Pp
|
|
.Fn opendisk
|
|
attempts to open the following variations of
|
|
.Fa path ,
|
|
in order:
|
|
.Bl -tag -width "/dev/rpathX"
|
|
.It Pa path
|
|
The pathname as given.
|
|
.It Pa path Ns Em X
|
|
.Fa path
|
|
with a suffix of
|
|
.Sq Em X ,
|
|
where
|
|
.Sq Em X
|
|
represents the raw partition of the device, as determined by
|
|
.Xr getrawpartition 3 ,
|
|
usually
|
|
.Dq c .
|
|
.El
|
|
.Pp
|
|
If
|
|
.Fa path
|
|
does not contain a
|
|
slash
|
|
.Pq Dq / ,
|
|
the following variations are attempted:
|
|
.Pp
|
|
.Bl -dash -offset indent
|
|
.It
|
|
If
|
|
.Fa iscooked
|
|
is zero:
|
|
.Pp
|
|
.Bl -tag -width "/dev/rpathX"
|
|
.It Pa /dev/rpath
|
|
.Fa path
|
|
with a prefix of
|
|
.Dq Pa /dev/r .
|
|
.It Pa /dev/rpath Ns Em X
|
|
.Fa path
|
|
with a prefix of
|
|
.Dq Pa /dev/r
|
|
and a suffix of
|
|
.Sq Em X
|
|
(q.v.).
|
|
.El
|
|
.It
|
|
If
|
|
.Fa iscooked
|
|
is non-zero:
|
|
.Bl -tag -width "/dev/rpathX"
|
|
.It Pa /dev/path
|
|
.Fa path
|
|
with a prefix of
|
|
.Dq Pa /dev/ .
|
|
.It Pa /dev/path Ns Em X
|
|
.Fa path
|
|
with a prefix of
|
|
.Dq Pa /dev/
|
|
and a suffix of
|
|
.Sq Em X
|
|
(q.v.).
|
|
.El
|
|
.El
|
|
.Sh RETURN VALUES
|
|
An open file descriptor, or -1 if the
|
|
.Xr open 2
|
|
failed.
|
|
.Sh ERRORS
|
|
.Fn opendisk
|
|
may set
|
|
.Va errno
|
|
to one of the following values:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
.Dv O_CREAT
|
|
was set in
|
|
.Fa flags ,
|
|
or
|
|
.Xr getrawpartition 3
|
|
didn't return a valid partition.
|
|
.It Bq Er EFAULT
|
|
.Fa buf
|
|
was the
|
|
.Dv NULL
|
|
pointer.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Fn opendisk
|
|
function
|
|
may also set
|
|
.Va errno
|
|
to any value specified by the
|
|
.Xr open 2
|
|
function.
|
|
.Sh SEE ALSO
|
|
.Xr open 2 ,
|
|
.Xr getrawpartition 3
|
|
.Sh HISTORY
|
|
The
|
|
.Fn opendisk
|
|
function first appeared in
|
|
.Nx 1.3 .
|