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Revision 1.11, Wed Apr 30 13:10:52 2008 UTC (11 years, 11 months ago) by martin
Branch: MAIN
CVS Tags: yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-base, netbsd-7-1-RC1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, matt-premerge-20091211, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b, matt-mips64-premerge-20101231, matt-mips64-base2, jym-xensuspend-nbase, jym-xensuspend-base, jym-xensuspend, hpcarm-cleanup-nbase, christos-time_t-base, cherry-xenmp-base, cherry-xenmp, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2, agc-symver-base, agc-symver
Branch point for: netbsd-7-nhusb, netbsd-7, christos-time_t
Changes since 1.10: +1 -8 lines

Convert TNF licenses to new 2 clause variant

.\"	$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 .