1.\" Copyright (c) 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)devname.3 8.2 (Berkeley) 4/29/95 33.\" $FreeBSD$ 34.\" 35.Dd July 18, 1999 36.Dt DEVNAME 3 37.Os 38.Sh NAME 39.Nm devname 40.Nd get device name 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In sys/stat.h 45.In stdlib.h 46.Ft char * 47.Fn devname "dev_t dev" "mode_t type" 48.Sh DESCRIPTION 49The 50.Fn devname 51function returns a pointer to the name of the block or character 52device in 53.Pa /dev 54with a device number of 55.Fa dev , 56and a file type matching the one encoded in 57.Fa type 58which must be one of 59.Dv S_IFBLK 60or 61.Dv S_IFCHR . 62To find the right name, 63.Fn devname 64first searches the device database created by 65.Xr dev_mkdb 8 ; 66if that fails, it asks the kernel via the 67.Va kern.devname 68sysctl. 69If it was still unable to come up with a suitable name, 70it will format the information encapsulated in 71.Fa dev 72and 73.Fa type 74in a human-readable format. 75.Sh SEE ALSO 76.Xr stat 2 , 77.Xr dev_mkdb 8 78.Sh HISTORY 79The 80.Fn devname 81function appeared in 82.Bx 4.4 . 83.Sh BUGS 84The 85.Fn devname 86function returns a poiner to an internal static object; 87thus, subsequent calls will modify the same buffer. 88