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Cryptlib: Implement memset() to avoid the potential crash

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Although the prototype of memset() is already defined in OpenSslSupport.h,
the function was never implemented. It was fine since a macro was
designed to replace all memset() with SetMem() after including
OpenSslSupport.h. However, since openssl 1.0.2j, a new function pointer
in crypto/mem_clr.c requires the "real" memset() or the program would
crash due to the NULL function pointer access. This commit implements
memset() (just a wrapper of SetMem()) to avoid the potential crash.

Signed-off-by: Gary Lin <glin@suse.com>
This commit is contained in:
Gary Lin 2016-10-17 13:47:17 +08:00 committed by Peter Jones
parent 7bfcd70801
commit 7ab40ee92c
2 changed files with 42 additions and 1 deletions
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3
Cryptlib/Makefile
View File

@ -43,7 +43,8 @@ OBJS = Hash/CryptMd4.o \
SysCall/CrtWrapper.o \
SysCall/TimerWrapper.o \
SysCall/BaseMemAllocation.o \
SysCall/BaseStrings.o
SysCall/BaseStrings.o \
SysCall/memset.o
all: $(TARGET)

40
Cryptlib/SysCall/memset.c Normal file
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@ -0,0 +1,40 @@
/*
* Copyright 2016 SUSE LINUX GmbH <glin@suse.com>
*
* 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 HOLDER 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 <efi.h>
#include <efilib.h>
typedef UINTN size_t;
void *
memset (void *dest, int ch, size_t count)
{
SetMem(dest, count, (UINT8)(ch));
return dest;
}