1.\" Copyright (c) 1999 Chris Costello 2.\" 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.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd September 25, 1999 28.Os 29.Dt MAKE_DEV 9 30.Sh NAME 31.Nm make_dev , 32.Nm destroy_dev 33.Nd "Create or destroy dev_t and devfs registration for a new device" 34.Sh SYNOPSIS 35.Fd #include <sys/types.h> 36.Fd #include <sys/conf.h> 37.Ft dev_t 38.Fn make_dev "struct cdevsw *cdevsw" "int minor" "uid_t uid" "gid_t gid" "int perms" "char *fmt" ... 39.Ft dev_t 40.Fn make_dev_alias "dev_t pdev" "char *fmt" ... 41.Ft void 42.Fn destroy_dev "dev_t dev" 43.Sh DESCRIPTION 44The 45.Fn make_dev 46function creates a 47.Fa dev_t 48structure for a new device. If DEVFS is available, it is also notified of 49the presence of the new device. The device will be owned by 50.Va uid , 51with the group ownership as 52.Va gid , 53and with the name as specified in 54.Va name . 55The permissions of the file specified in 56.Va perms 57are defined in 58.Aq Pa sys/stat.h : 59.Pp 60.Bd -literal -offset indent -compact 61#define S_IRWXU 0000700 /* RWX mask for owner */ 62#define S_IRUSR 0000400 /* R for owner */ 63#define S_IWUSR 0000200 /* W for owner */ 64#define S_IXUSR 0000100 /* X for owner */ 65 66#define S_IRWXG 0000070 /* RWX mask for group */ 67#define S_IRGRP 0000040 /* R for group */ 68#define S_IWGRP 0000020 /* W for group */ 69#define S_IXGRP 0000010 /* X for group */ 70 71#define S_IRWXO 0000007 /* RWX mask for other */ 72#define S_IROTH 0000004 /* R for other */ 73#define S_IWOTH 0000002 /* W for other */ 74#define S_IXOTH 0000001 /* X for other */ 75 76#define S_ISUID 0004000 /* set user id on execution */ 77#define S_ISGID 0002000 /* set group id on execution */ 78#define S_ISVTX 0001000 /* sticky bit */ 79#ifndef _POSIX_SOURCE 80#define S_ISTXT 0001000 81#endif 82.Ed 83.Pp 84The 85.Fn make_dev_alias 86function takes the returned 87.Ft dev_t 88from 89.Fn make_dev 90and makes another (aliased) name for this device. 91It is an error to call 92.Fn make_dev_alias 93prior to calling 94.Fn make_dev . 95.Pp 96The 97.Fn destroy_dev 98function takes the returned 99.Fa dev_t 100from 101.Fn make_dev 102and destroys the registration for that device. 103Do not call 104.Fn destroy_dev 105on devices that were created with 106.Fn make_dev_alias . 107.Sh HISTORY 108The 109.Fn make_dev 110and 111.Fn destroy_dev 112functions first appeared in 113.Fx 4.0 . 114The function 115.Fn make_dev_alias 116first appeared in 117.Fx 4.1 . 118