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
|
/* Copyright (C) 2000 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 <errno.h>
#include <stdlib.h>
#include <netdb.h>
#include "nsswitch.h"
void *
__nss_getent (getent_r_function func, void **resbuf, char **buffer,
size_t buflen, size_t *buffer_size, int *h_errnop)
{
void *result;
int save;
if (*buffer == NULL)
{
*buffer_size = buflen;
*buffer = malloc (*buffer_size);
}
while (buffer != NULL
&& func (resbuf, *buffer, *buffer_size, &result,
h_errnop) == ERANGE
&& (h_errnop == NULL || *h_errnop == NETDB_INTERNAL))
{
char *new_buf;
*buffer_size += buflen;
new_buf = realloc (*buffer, *buffer_size);
if (new_buf == NULL)
{
/* We are out of memory. Free the current buffer so that the
process gets a chance for a normal termination. */
save = errno;
free (*buffer);
__set_errno (save);
}
*buffer = new_buf;
}
if (*buffer == NULL)
result = NULL;
/* Release lock. Preserve error value. */
save = errno;
__set_errno (save);
return result;
}
|
