.\"     $NetBSD: util.3,v 1.13 2002/12/22 02:19:15 wiz Exp $
.\"
.\" Copyright (c) 2001 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Gregory McGarry.
.\"
.\" 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.
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.\"    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 NetBSD
.\"        Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION OR CONTRIBUTORS
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\"
.Dd December 22, 2002
.Dt UTIL 3
.Os
.Sh NAME
.Nm util
.Nd system utilities library
.Sh LIBRARY
.Lb libutil
.Sh DESCRIPTION
The
.Nm
library is the system utilities library and contains various
system-dependent utility routines used in a wide variety of system daemons.
The abstracted functions are mostly related to pseudo-terminals
and login accounting.
These routines are
.Nx Ns -specific
and are not portable.
Their use should be restricted.
Declarations for these functions may be obtained from the include file
.Pa \*[Lt]util.h\*[Gt] .
.Sh LIST OF FUNCTIONS
.sp 2
.nf
.ta \w'getmaxpartitions.3'u+2n +\w'get the maximum number of partitions allowed per disk'u
\fIName/Page\fP	\fIDescription\fP
.ta \w'getmaxpartitions.3'u+2n +\w'get the maximum number of partitions allowed per disk'u+6nC
.sp 5p
disklabel_dkcksum.3	compute the checksum for a disklabel
disklabel_scan.3	scan a buffer for a valid disklabel
forkpty.3	tty utility function
getbootfile.3	get the name of the booted kernel file
getlabeloffset.3	get the sector number and offset of the disklabel
getlabelsector.3	get the sector number and offset of the disklabel
getmaxpartitions.3	get the maximum number of partitions allowed per disk
getrawpartition.3	get the system ``raw'' partition
login.3	login utility function
login_cap.3	query login.conf database about a user class
login_close.3	query login.conf database about a user class
login_getcapbool.3	query login.conf database about a user class
login_getcapnum.3	query login.conf database about a user class
login_getcapsize.3	query login.conf database about a user class
login_getcapstr.3	query login.conf database about a user class
login_getcaptime.3	query login.conf database about a user class
login_getclass.3	query login.conf database about a user class
login_tty.3	tty utility function
loginx.3	login utility function
logout.3	login utility function
logoutx.3	login utility function
logwtmp.3	login utility function
logwtmpx.3	login utility function
opendisk.3	open a disk partition
openpty.3	tty utility function
pidfile.3	write a daemon pid file
pidlock.3	locks based on files containing PIDs
pw_abort.3	passwd file update function
pw_copy.3	utility function for interactive passwd file updates
pw_edit.3	utility function for interactive passwd file updates
pw_error.3	utility function for interactive passwd file updates
pw_getconf.3	password encryption configuration access function
pw_getprefix.3	passwd file update function
pw_init.3	utility function for interactive passwd file updates
pw_lock.3	passwd file update function
pw_mkdb.3	passwd file update function
pw_prompt.3	utility function for interactive passwd file updates
pw_scan.3	utility function for interactive passwd file updates
pw_setprefix.3	passwd file update function
secure_path.3	determine if a file appears to be ``secure''
setclasscontext.3	query login.conf database about a user class
setusercontext.3	query login.conf database about a user class
snprintb.3	bitmask output conversion
ttyaction.3	ttyaction utility function
ttylock.3	locks based on files containing PIDs
ttymsg.3	ttymsg utility function
ttyunlock.3	locks based on files containing PIDs
.fi
.Sh FILES
.Bl -tag -width /usr/lib/libutil_p.a -compact
.It Pa /usr/lib/libutil.a
static util library
.It Pa /usr/lib/libutil.so
dynamic util library
.It Pa /usr/lib/libutil_p.a
static util library compiled for profiling
.El