summary refs log tree commit diff
path: root/nss/getXXbyYY.c
blob: 5eb9ee9c8746e6338aa4ecdeebd25222dfcfcd57 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
/* Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#include "../nss/nsswitch.h"

/*******************************************************************\
|* Here we assume several symbols to be defined:		   *|
|* 								   *|
|* LOOKUP_TYPE   - the return type of the function		   *|
|* 								   *|
|* FUNCTION_NAME - name of the non-reentrant function		   *|
|* 								   *|
|* DATABASE_NAME - name of the database the function accesses	   *|
|*		   (e.g., host, services, ...)			   *|
|* 								   *|
|* ADD_PARAMS    - additional parameter, can vary in number	   *|
|* 								   *|
|* ADD_VARIABLES - names of additional parameter		   *|
|* 								   *|
|* BUFLEN	 - length of buffer allocated for the non	   *|
|*		   reentrant version				   *|
|* 								   *|
|* Optionally the following vars can be defined:		   *|
|* 								   *|
|* NEED_H_ERRNO  - an extra parameter will be passed to point to   *|
|*		   the global `h_errno' variable.		   *|
|* 								   *|
\*******************************************************************/

/* To make the real sources a bit prettier.  */
#define REENTRANT_NAME APPEND_R (FUNCTION_NAME)
#define APPEND_R(name) APPEND_R1 (name)
#define APPEND_R1(name) name##_r

/* Sometimes we need to store error codes in the `h_errno' variable.  */
#ifdef NEED_H_ERRNO
# define H_ERRNO_PARM , int *h_errnop
# define H_ERRNO_VAR , &h_errno
#else
# define H_ERRNO_PARM
# define H_ERRNO_VAR
#endif


/* Prototype for reentrant version we use here.  */
extern LOOKUP_TYPE *REENTRANT_NAME (ADD_PARAMS, LOOKUP_TYPE *result,
				    char *buffer, int buflen H_ERRNO_PARM);

LOOKUP_TYPE *
FUNCTION_NAME (ADD_PARAMS)
{
  static LOOKUP_TYPE result;
  static char buffer[BUFLEN];

  return REENTRANT_NAME (ADD_VARIABLES, &result, buffer, BUFLEN H_ERRNO_VAR);
}