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