Strictly check whether catalog file is larger enough for the data.
[glibc.git] / inet / netgroup.h
blob804a201ddae2adb5b265e32c68011fb61369c607
1 /* Internal header for netgroup related functions.
2 Copyright (C) 1996, 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #ifndef _NETGROUP_H
21 #define _NETGROUP_H 1
23 /* A netgroup can consist of names of other netgroups. We have to
24 track which netgroups were read and which still have to be read. */
25 struct name_list
27 const char *name;
28 struct name_list *next;
32 /* Dataset for iterating netgroups. */
33 struct __netgrent
35 enum { triple_val, group_val } type;
37 union
39 struct
41 const char *host;
42 const char *user;
43 const char *domain;
45 triple;
47 const char *group;
48 } val;
50 /* Room for the data kept between the calls to the netgroup
51 functions. We must avoid global variables. */
52 char *data;
53 size_t data_size;
54 char *cursor;
55 int first;
57 struct name_list *known_groups;
58 struct name_list *needed_groups;
62 /* The internal netgroup handling functions might be called from outside. */
63 extern int __internal_setnetgrent (const char *group,
64 struct __netgrent *datap);
65 extern void __internal_endnetgrent (struct __netgrent *datap);
66 extern int __internal_getnetgrent_r (char **hostp, char **userp,
67 char **domainp, struct __netgrent *datap,
68 char *buffer, size_t buflen, int *errnop);
70 #endif /* netgroup.h */