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[dragonfly.git] / share / man / man9 / make_dev.9
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1.\" Copyright (c) 1999 Chris Costello
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25.\" $FreeBSD: src/share/man/man9/make_dev.9,v 1.2.2.3 2001/12/17 11:30:18 ru Exp $
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 for a new device"
34.Sh SYNOPSIS
35.In sys/types.h
36.In 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 void
40.Fn destroy_dev "dev_t dev"
41.Sh DESCRIPTION
42The
43.Fn make_dev
44function creates a
45.Fa dev_t
46structure for a new device.
47The device will be owned by
48.Va uid ,
49with the group ownership as
50.Va gid ,
51and with the name as specified in
52.Va name .
53The permissions of the file specified in
54.Va perms
55are defined in
56.Aq Pa sys/stat.h :
57.Pp
58.Bd -literal -offset indent -compact
59#define S_IRWXU 0000700 /* RWX mask for owner */
60#define S_IRUSR 0000400 /* R for owner */
61#define S_IWUSR 0000200 /* W for owner */
62#define S_IXUSR 0000100 /* X for owner */
63
64#define S_IRWXG 0000070 /* RWX mask for group */
65#define S_IRGRP 0000040 /* R for group */
66#define S_IWGRP 0000020 /* W for group */
67#define S_IXGRP 0000010 /* X for group */
68
69#define S_IRWXO 0000007 /* RWX mask for other */
70#define S_IROTH 0000004 /* R for other */
71#define S_IWOTH 0000002 /* W for other */
72#define S_IXOTH 0000001 /* X for other */
73
74#define S_ISUID 0004000 /* set user id on execution */
75#define S_ISGID 0002000 /* set group id on execution */
76#define S_ISVTX 0001000 /* sticky bit */
77#ifndef _POSIX_SOURCE
78#define S_ISTXT 0001000
79#endif
80.Ed
81.Pp
82The
83.Fn destroy_dev
84function takes the returned
85.Fa dev_t
86from
87.Fn make_dev
88and destroys the registration for that device.
89.Sh HISTORY
90The
91.Fn make_dev
92and
93.Fn destroy_dev
94functions first appeared in
95.Fx 4.0 .