Ensure that strcat / strncat check for integer overflows
when computing the length of the resulting string.
Change-Id: Ib806ad33a0d3b50876f384bc17787a28f0dddc37
Add _FORTIFY_SOURCE support for the following functions:
* memset
* bzero
Move the __BIONIC_FORTIFY_INLINE definition to cdefs.h so it
can be used from multiple header files.
Change-Id: Iead4d5e35de6ec97786d58ee12573f9b11135bb7
Add initial support for -D_FORTIFY_SOURCE to bionic for the
following functions:
* memcpy
* memmove
* strcpy
* strcat
* strncpy
* strncat
This change adds a new version of the above functions which passes
the size of the destination buffer to __builtin___*_chk.
If the compiler can determine, at compile time, that the destination
buffer is large enough, or the destination buffer can point to an object
of unknown size, then the check call is bypassed.
If the compiler can't make a compile time decision, then it calls
the __*_chk() function, which does a runtime buffer size check
These options are only enabled if the code is compiled with
-D_FORTIFY_SOURCE=1 or 2, and only when optimizations are enabled.
Please see
* http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html
* http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html
for additional details on FORTIFY_SOURCE.
Testing: Compiled the entire Android tree with -D_FORTIFY_SOURCE=1,
and verified that everything appears to be working properly.
Also created a test buffer overflow, and verified that it was
caught by this change.
Change-Id: I4fddb445bafe92b16845b22458d72e6dedd24fbc
Chars are signed for x86 -- correct the comparison semantics.
Change-Id: I2049e98eb063c0b4e83ea973d3fcae49c6817dde
Author: Liubov Dmitrieva <liubov.dmitrieva@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
On ARM there is currently no assembler optimized memmove in libc.
There is however a more optimized bcopy which copies long instead
of bytes where possible. This almost doubles the performance in
best case.
Change-Id: I1f1cd27529443358047c385730deaf938ce4e642
This reverts commit 80fba9a2fe,
which caused the system to not boot anymore, aborting with:
"java.lang.RuntimeException: Missing static main on com.android.server.SystemServer".
Change-Id: I745e0a23c728cccf5f95a3c7642d544478a4e57e
Return a valid pointer (not NULL) when the character "c" is at the end of "src".
Change-Id: Iab0b677943f2c8a9fbb255c44689f5d6dc3535d7
Example:
memccpy(dest, "xzy", 'y', 3) should return dest+3 rather than null.
It decreases code size:
text data bss dec hex filename
161 0 0 161 a1 strndup-BEFORE.o
153 0 0 153 99 strndup-AFTER.o
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Geremy Condra
Nick Kralevich
Bruce Beare
Elliott Hughes
Johannes Carlsson
David 'Digit' Turner
Marco Nelissen
rich cannings
David Turner
Chris Dearman
André Goddard Rosa
The Android Open Source Project