This changes the scripts so that if some kernel files exists
in external/kernel-headers/modified, that they will be preferred
over the same files found in original. This is to support the case
where the kernel headers cannot be taken without some small modifications.
Included with this change, is a general cleanup of the python scripts.
This also modifies the generate uapi headers script to indicate if the
source of the modified headers has changed.
Change-Id: Id13523b244ced52a2ecd9f1399c43996dd8296fa
Reuse the top bits of _JB_SIGFLAG field previously used to store a
boolean to store a cookie that's validated by [sig]longjmp to make it
harder to use as a ROP gadget. Additionally, encrypt saved registers
with the cookie so that an attacker can't modify a register's value to
a specific value without knowing the cookie.
Bug: http://b/23942752
Change-Id: Id0eb8d06916e89d5d776bfcaa9458f8826717ba3
For previous way to get the stack using the [stack] string from
/proc/self/task/<pid>/maps is not enough. On x86/x86_64, if an
alternative signal stack is used while a task switch happens,
the [stack] indicator may no longer be correct.
Instead, stack_start from /proc/self/stat which is always inside
the main stack, is used to find the main stack in /proc/self/maps.
Change-Id: Ieb010e71518b57560d541cd3b3563e5aa9660750
Signed-off-by: Nitzan Mor-sarid <nitzan.mor-sarid@intel.com>
Signed-off-by: Mingwei Shi <mingwei.shi@intel.com>
http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_socket.h.html
> CMSG_DATA(cmsg)
> If the argument is a pointer to a cmsghdr structure, this macro
> shall return an unsigned character pointer to the data array
> associated with the cmsghdr structure.
Change-Id: I3f89ba19cbca4e6727abc65a2bbcd59267892ba8
Make unistd.h usable from all platform versions.
Also name all function parameters for Android Studio.
Bug: http://b/21952040
Change-Id: Ia1777fd4a6d4e37f25cc402c28fb78c003e481e3
The debug malloc code unconditionally closes stdin/stdout/stderr,
which means that other atexit functions cannot use them. Only
close these if there is a debug malloc final function to call.
This doesn't appear to be a problem on most normal applications or the
atexit_exit bionic unit test would be failing. However, if you
enable stat dumping in jemalloc, nothing prints. Most likely trying
to add an atexit function from within libc is causing that atexit
to run after the debug malloc atexit function.
Change-Id: I963720d4ccaaa511e44af07a7461f17eb3f84e8e
Don't pass the parent load's dlextinfo to dependent loads, since this
causes the linker to try to load the dependencies using the same
addresses/relro/fds/etc as the main library, which is never going to
work. This was how it worked before ae69a95 which broke this.
Bug: http://b/23742664
Bug: http://b/20948231
Bug: http://b/20841817
Change-Id: I340ebae1127666d5c6c6f9c6521b89fb93f15bdd
bionic is built without _FILE_OFFSET_BITS=64, so internally regoff_t
was 32-bit on LP32, but code compiled with _FILE_OFFSET_BITS would
expect rm_so and rm_eo in struct regmatch_t to be 64-bit, leading to
confusion.
Bug: http://b/23566443
Change-Id: Iae92fa545104068e4f64ce1977f5ec616859638c
