diff options
Diffstat (limited to 'inet')
| -rw-r--r-- | inet/getnetgrent.c | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/inet/getnetgrent.c b/inet/getnetgrent.c index c310e0128e..88b06ffc98 100644 --- a/inet/getnetgrent.c +++ b/inet/getnetgrent.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997 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 @@ -16,13 +16,48 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <errno.h> #include <netdb.h> +#include <stdlib.h> +#include <bits/libc-lock.h> +/* Statis buffer for return value. We allocate it when needed. */ +static char *buffer; +/* All three strings should fit in a block of 1kB size. */ +#define BUFSIZE 1024 + + + +static void +allocate (void) +{ + buffer = (char *) malloc (BUFSIZE); +} int getnetgrent (char **hostp, char **userp, char **domainp) { - static char buffer[1024]; /* All three strings shouldn't use 1kB. */ + __libc_once_define (static, once); + __libc_once (once, allocate); + + if (buffer == NULL) + { + __set_errno (ENOMEM); + return -1; + } - return __getnetgrent_r (hostp, userp, domainp, buffer, sizeof (buffer)); + return __getnetgrent_r (hostp, userp, domainp, buffer, BUFSIZE); } + + +/* Make sure the memory is freed if the programs ends while in + memory-debugging mode and something actually was allocated. */ +static void +__attribute__ ((unused)) +free_mem (void) +{ + if (buffer != NULL) + free (buffer); +} + +text_set_element (__libc_subfreeres, free_mem); |