1.\" Copyright (c) 1992, 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.\" from: @(#)getnetgrent.3 8.1 (Berkeley) 6/4/93 33.\" $Id: getnetgrent.3,v 1.3 1994/12/11 22:47:06 christos Exp $ 34.\" 35.Dd June 4, 1993 36.Dt GETNETGRENT 3 37.Os 38.Sh NAME 39.Nm getnetgrent , 40.Nm innetgr , 41.Nm setnetgrent , 42.Nm endnetgrent 43.Nd netgroup database operations 44.Sh SYNOPSIS 45.Ft int 46.Fn getnetgrent "char **host, char **user, char **domain" 47.Ft int 48.Fn innetgr "const char *netgroup, const char *host, const char *user, const char *domain" 49.Ft void 50.Fn setnetgrent "const char *netgroup" 51.Ft void 52.Fn endnetgrent void 53.Sh DESCRIPTION 54These functions operate on the netgroup database file 55.Pa /etc/netgroup.db 56which is described 57in 58.Xr netgroup 5 . 59If that file does not exist, and the system supports 60.Sy YP, 61then the 62.Sy netgroup 63.Sy YP 64databases are used instead. 65The database defines a set of netgroups, each made up of one or more triples: 66.Bd -literal -offset indent 67(host, user, domain) 68.Ed 69.Pp 70that defines a combination of host, user and domain. 71Any of the three fields may be specified as ``wildcards'' that match any 72string. 73.Pp 74The function 75.Fn getnetgrent 76sets the three pointer arguments to the strings of the next member of the 77current netgroup. 78If any of the string pointers are 79.Sy (char *)0 80that field is considered a wildcard. 81.Pp 82The functions 83.Fn setnetgrent 84and 85.Fn endnetgrent 86set the current netgroup and terminate the current netgroup respectively. 87If 88.Fn setnetgrent 89is called with a different netgroup than the previous call, an implicit 90.Fn endnetgrent 91is implied. 92.Fn Setnetgrent 93also sets the offset to the first member of the netgroup. 94.Pp 95The function 96.Fn innetgr 97searches for a match of all fields within the specified group. 98If any of the 99.Sy host , 100.Sy user , 101or 102.Sy domain 103arguments are 104.Sy (char *)0 105those fields will match any string value in the netgroup member. 106.Sh RETURN VALUES 107The function 108.Fn getnetgrent 109returns 0 for ``no more netgroup members'' and 1 otherwise. 110The function 111.Fn innetgr 112returns 1 for a successful match and 0 otherwise. 113The functions 114.Fn setnetgrent 115and 116.Fn endnetgrent 117have no return value. 118.Sh FILES 119.Bl -tag -width /etc/netgroup -compact 120.It Pa /etc/netgroup 121netgroup database file 122.El 123.Sh SEE ALSO 124.Fn netgroup 5 125.Sh BUGS 126The function 127.Fn getnetgrent 128returns pointers to dynamically allocated data areas that are free'd when 129the function 130.Fn endnetgrent 131is called. 132