freebsd-dev/lib/libc/gen/getusershell.3
Warner Losh fbbd9655e5 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00

100 lines
2.9 KiB
Groff

.\" $NetBSD: getusershell.3,v 1.6 1999/03/22 19:44:42 garbled Exp $
.\"
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.\" @(#)getusershell.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd January 16, 1999
.Dt GETUSERSHELL 3
.Os
.Sh NAME
.Nm getusershell ,
.Nm setusershell ,
.Nm endusershell
.Nd get valid user shells
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In unistd.h
.Ft char *
.Fn getusershell void
.Ft void
.Fn setusershell void
.Ft void
.Fn endusershell void
.Sh DESCRIPTION
The
.Fn getusershell
function
returns a pointer to a valid user shell as defined by the
system manager in the shells database as described in
.Xr shells 5 .
If the shells database is not available,
.Fn getusershell
behaves as if
.Pa /bin/sh
and
.Pa /bin/csh
were listed.
.Pp
The
.Fn getusershell
function
reads the next
line (opening the file if necessary);
.Fn setusershell
rewinds the file;
.Fn endusershell
closes it.
.Sh FILES
.Bl -tag -width /etc/shells -compact
.It Pa /etc/shells
.El
.Sh DIAGNOSTICS
The routine
.Fn getusershell
returns a null pointer (0) on
.Dv EOF .
.Sh SEE ALSO
.Xr nsswitch.conf 5 ,
.Xr shells 5
.Sh HISTORY
The
.Fn getusershell
function appeared in
.Bx 4.3 .
.Sh BUGS
The
.Fn getusershell
function leaves its result in an internal static object and returns
a pointer to that object.
Subsequent calls to
.Fn getusershell
will modify the same object.