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gen/devname.3 Libc-1725.40.4 /dev/null
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-.\" Copyright (c) 1993
-.\"	The Regents of the University of California.  All rights reserved.
-.\"
-.\" 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.
-.\" 3. All advertising materials mentioning features or use of this software
-.\"    must display the following acknowledgement:
-.\"	This product includes software developed by the University of
-.\"	California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
-.\"
-.\"     @(#)devname.3	8.2 (Berkeley) 4/29/95
-.\" $FreeBSD: src/lib/libc/gen/devname.3,v 1.11 2001/10/01 16:08:50 ru Exp $
-.\"
-.Dd October 25, 2004
-.Dt DEVNAME 3
-.Os
-.Sh NAME
-.Nm devname ,
-.Nm devname_r
-.Nd get device name
-.Sh LIBRARY
-.Lb libc
-.Sh SYNOPSIS
-.In sys/stat.h
-.In stdlib.h
-.Ft char *
-.Fo devname
-.Fa "dev_t dev"
-.Fa "mode_t type"
-.Fc
-.Ft char *
-.Fo devname_r
-.Fa "dev_t dev"
-.Fa "mode_t type"
-.Fa "char *buf"
-.Fa "int len"
-.Fc
-.Sh DESCRIPTION
-The
-.Fn devname
-function returns a pointer to the name of the block or character
-device in
-.Dq Pa /dev
-with a device number of
-.Fa dev ,
-and a file type matching the one encoded in
-.Fa type
-which must be one of
-.Dv S_IFBLK
-or
-.Dv S_IFCHR .
-If no device matches the specified values, or no information is
-available, NULL is returned.
-.Pp
-The
-.Fn devname
-function uses a static buffer, which will be overwritten
-on subsequent calls.
-The
-.Fn devname_r
-functions takes a buffer and length as arguments to avoid this problem.
-.Pp
-The traditional display for applications when no device is
-found is the string
-.Dq ?? .
-.Sh SEE ALSO
-.Xr stat 2 ,
-.Xr dev_mkdb 8
-.Sh HISTORY
-The
-.Fn devname
-function call appeared in
-.Bx 4.4 .