1dd9f42a29
change (revision 1.2 of devname.c on 1999/07/18), don't put quotes around a path, and use .Dv where appropriate.
88 lines
2.8 KiB
Groff
88 lines
2.8 KiB
Groff
.\" Copyright (c) 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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.\" @(#)devname.3 8.2 (Berkeley) 4/29/95
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.\" $FreeBSD$
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.\"
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.Dd July 18, 1999
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.Dt DEVNAME 3
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.Os
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.Sh NAME
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.Nm devname
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.Nd get device name
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In sys/stat.h
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.In stdlib.h
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.Ft char *
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.Fn devname "dev_t dev" "mode_t type"
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.Sh DESCRIPTION
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The
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.Fn devname
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function returns a pointer to the name of the block or character
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device in
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.Pa /dev
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with a device number of
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.Fa dev ,
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and a file type matching the one encoded in
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.Fa type
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which must be one of
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.Dv S_IFBLK
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or
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.Dv S_IFCHR .
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To find the right name,
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.Fn devname
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first searches the device database created by
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.Xr dev_mkdb 8 ;
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if that fails, it asks the kernel via the
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.Va kern.devname
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sysctl.
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If it was still unable to come up with a suitable name,
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it will format the information encapsulated in
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.Fa dev
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and
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.Fa type
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in a human-readable format.
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.Sh SEE ALSO
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.Xr stat 2 ,
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.Xr dev_mkdb 8
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.Sh HISTORY
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The
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.Fn devname
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function call appeared in
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.Bx 4.4 .
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.Sh BUGS
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The
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.Fn devname
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function returns a poiner to an internal static object;
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thus, subsequent calls will modify the same buffer.
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