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.\" @(#)getnetgrent.3 8.1 (Berkeley) 6/4/93 33.\" $FreeBSD$ 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 LIBRARY 45.Lb libc 46.Sh SYNOPSIS 47.In netdb.h 48.Ft int 49.Fn getnetgrent "char **host" "char **user" "char **domain" 50.Ft int 51.Fn innetgr "const char *netgroup" "const char *host" "const char *user" "const char *domain" 52.Ft void 53.Fn setnetgrent "const char *netgroup" 54.Ft void 55.Fn endnetgrent void 56.Sh DESCRIPTION 57These functions operate on the netgroup database file 58.Pa /etc/netgroup 59which is described 60in 61.Xr netgroup 5 . 62The database defines a set of netgroups, each made up of one or more triples: 63.Bd -literal -offset indent 64(host, user, domain) 65.Ed 66that defines a combination of host, user and domain. 67Any of the three fields may be specified as ``wildcards'' that match any 68string. 69.Pp 70The function 71.Fn getnetgrent 72sets the three pointer arguments to the strings of the next member of the 73current netgroup. 74If any of the string pointers are 75.Sy (char *)0 76that field is considered a wildcard. 77.Pp 78The functions 79.Fn setnetgrent 80and 81.Fn endnetgrent 82set the current netgroup and terminate the current netgroup respectively. 83If 84.Fn setnetgrent 85is called with a different netgroup than the previous call, an implicit 86.Fn endnetgrent 87is implied. 88The 89.Fn setnetgrent 90function 91also sets the offset to the first member of the netgroup. 92.Pp 93The function 94.Fn innetgr 95searches for a match of all fields within the specified group. 96If any of the 97.Sy host , 98.Sy user , 99or 100.Sy domain 101arguments are 102.Sy (char *)0 103those fields will match any string value in the netgroup member. 104.Sh RETURN VALUES 105The function 106.Fn getnetgrent 107returns 0 for ``no more netgroup members'' and 1 otherwise. 108The function 109.Fn innetgr 110returns 1 for a successful match and 0 otherwise. 111The functions 112.Fn setnetgrent 113and 114.Fn endnetgrent 115have no return value. 116.Sh FILES 117.Bl -tag -width /etc/netgroup -compact 118.It Pa /etc/netgroup 119netgroup database file 120.El 121.Sh COMPATIBILITY 122The netgroup members have three string fields to maintain compatibility 123with other vendor implementations, however it is not obvious what use the 124.Sy domain 125string has within 126.Bx . 127.Sh SEE ALSO 128.Xr netgroup 5 129.Sh BUGS 130The function 131.Fn getnetgrent 132returns pointers to dynamically allocated data areas that are freed when 133the function 134.Fn endnetgrent 135is called. 136