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@(#)getnetgrent.3 8.1 (Berkeley) 6/4/93
$FreeBSD: src/lib/libc/gen/getnetgrent.3,v 1.13 2007/01/09 00:27:54 imp Exp $
.Dd June 4, 1993 .Dt GETNETGRENT 3 .Os .Sh NAME .Nm getnetgrent , .Nm innetgr , .Nm setnetgrent , .Nm endnetgrent .Nd netgroup database operations .Sh LIBRARY .Lb libc .Sh SYNOPSIS n netdb.h .Ft int .Fn getnetgrent "char **host" "char **user" "char **domain" .Ft int .Fn innetgr "const char *netgroup" "const char *host" "const char *user" "const char *domain" .Ft void .Fn setnetgrent "const char *netgroup" .Ft void .Fn endnetgrent void .Sh DESCRIPTION These functions operate on the netgroup database file
a /etc/netgroup which is described in .Xr netgroup 5 . The database defines a set of netgroups, each made up of one or more triples: d -literal -offset indent (host, user, domain) .Ed that defines a combination of host, user and domain. Any of the three fields may be specified as ``wildcards'' that match any string.
p The function .Fn getnetgrent sets the three pointer arguments to the strings of the next member of the current netgroup. If any of the string pointers are .Sy (char *)0 that field is considered a wildcard.
p The functions .Fn setnetgrent and .Fn endnetgrent set the current netgroup and terminate the current netgroup respectively. If .Fn setnetgrent is called with a different netgroup than the previous call, an implicit .Fn endnetgrent is implied. The .Fn setnetgrent function also sets the offset to the first member of the netgroup.
p The function .Fn innetgr searches for a match of all fields within the specified group. If any of the .Sy host , .Sy user , or .Sy domain arguments are .Sy (char *)0 those fields will match any string value in the netgroup member. .Sh RETURN VALUES The function .Fn getnetgrent returns 0 for ``no more netgroup members'' and 1 otherwise. The function .Fn innetgr returns 1 for a successful match and 0 otherwise. The functions .Fn setnetgrent and .Fn endnetgrent have no return value. .Sh FILES l -tag -width /etc/netgroup -compact t Pa /etc/netgroup netgroup database file .El .Sh COMPATIBILITY The netgroup members have three string fields to maintain compatibility with other vendor implementations, however it is not obvious what use the .Sy domain string has within x . .Sh SEE ALSO .Xr netgroup 5 .Sh BUGS The function .Fn getnetgrent returns pointers to dynamically allocated data areas that are freed when the function .Fn endnetgrent is called.