diff options
Diffstat (limited to 'nss/getXXbyYY.c')
| -rw-r--r-- | nss/getXXbyYY.c | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/nss/getXXbyYY.c b/nss/getXXbyYY.c deleted file mode 100644 index d027b14250..0000000000 --- a/nss/getXXbyYY.c +++ /dev/null @@ -1,154 +0,0 @@ -/* Copyright (C) 1996-2017 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <assert.h> -#include <errno.h> -#include <libc-lock.h> -#include <stdlib.h> -#include <resolv.h> - -#include "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 -#define INTERNAL(name) INTERNAL1 (name) -#define INTERNAL1(name) __##name - -/* 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_tmp -# define H_ERRNO_VAR_P &h_errno_tmp -#else -# define H_ERRNO_PARM -# define H_ERRNO_VAR -# define H_ERRNO_VAR_P NULL -#endif - -#ifdef HAVE_AF -# define AF_VAL af -#else -# define AF_VAL AF_INET -#endif - -/* Prototype for reentrant version we use here. */ -extern int INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, - char *buffer, size_t buflen, - LOOKUP_TYPE **result H_ERRNO_PARM); - -/* We need to protect the dynamic buffer handling. */ -__libc_lock_define_initialized (static, lock); - -/* This points to the static buffer used. */ -libc_freeres_ptr (static char *buffer); - - -LOOKUP_TYPE * -FUNCTION_NAME (ADD_PARAMS) -{ - static size_t buffer_size; - static LOOKUP_TYPE resbuf; - LOOKUP_TYPE *result; -#ifdef NEED_H_ERRNO - int h_errno_tmp = 0; -#endif - - /* Get lock. */ - __libc_lock_lock (lock); - - if (buffer == NULL) - { - buffer_size = BUFLEN; - buffer = (char *) malloc (buffer_size); - } - -#ifdef HANDLE_DIGITS_DOTS - if (buffer != NULL) - { - if (__nss_hostname_digits_dots (name, &resbuf, &buffer, - &buffer_size, 0, &result, NULL, AF_VAL, - H_ERRNO_VAR_P)) - goto done; - } -#endif - - while (buffer != NULL - && (INTERNAL (REENTRANT_NAME) (ADD_VARIABLES, &resbuf, buffer, - buffer_size, &result H_ERRNO_VAR) - == ERANGE) -#ifdef NEED_H_ERRNO - && h_errno_tmp == NETDB_INTERNAL -#endif - ) - { - char *new_buf; - buffer_size *= 2; - new_buf = (char *) 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. */ - free (buffer); - __set_errno (ENOMEM); - } - buffer = new_buf; - } - - if (buffer == NULL) - result = NULL; - -#ifdef HANDLE_DIGITS_DOTS -done: -#endif - /* Release lock. */ - __libc_lock_unlock (lock); - -#ifdef NEED_H_ERRNO - if (h_errno_tmp != 0) - __set_h_errno (h_errno_tmp); -#endif - - return result; -} - -nss_interface_function (FUNCTION_NAME) |