9b549c39c9
sprintf FORTIFY_SOURCE protections are not available on clang. Also add various __attribute__s to stdio functions. Change-Id: I936d1f9e55fe53a68885c4524b7b59e68fed218d
62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*
|
|
* Copyright (C) 2012 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <private/logd.h>
|
|
|
|
/*
|
|
* Runtime implementation of __builtin____vsprintf_chk.
|
|
*
|
|
* See
|
|
* http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html
|
|
* http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html
|
|
* for details.
|
|
*
|
|
* This vsprintf check is called if _FORTIFY_SOURCE is defined and
|
|
* greater than 0.
|
|
*/
|
|
int __vsprintf_chk(
|
|
char *dest,
|
|
int flags,
|
|
size_t dest_len_from_compiler,
|
|
const char *format,
|
|
va_list va)
|
|
{
|
|
int ret = vsnprintf(dest, dest_len_from_compiler, format, va);
|
|
|
|
if ((size_t) ret >= dest_len_from_compiler) {
|
|
__libc_android_log_print(ANDROID_LOG_FATAL, "libc",
|
|
"*** vsprintf buffer overflow detected ***\n");
|
|
abort();
|
|
}
|
|
|
|
return ret;
|
|
}
|