The kernel doesn't have an nlink_t; it just uses the equivalent of
uint32_t. We already had a usable __nlink_t in the C library, so
let's just define our nlink_t in terms of __nlink_t, which is what
__nlink_t was meant for anyway.
Note that our struct stat just follows the kernel, and doesn't refer
to nlink_t anyway.
Change-Id: I2a56e418e42404b1741b08c50554b03c11caebae
The old code ignored operator precedence (!), despite having two tables
of operator precedence. The code's still pretty awful, but I've cleaned
it up enough to fix this, the most important bug.
This patch lets us correctly clean the uapi unistd.h, stat.h, and swab.h files,
and also fixes the mess we were already making of various old kernel
header files. I've added a bunch more tests, fixed the existing tests that
the existing script was already failing (!), and changed the script so that
the tests are run every time the script is run.
We can probably remove some of the old kernel header files that we were
parsing incorrectly, but we can worry about that later.
Bug: 11253477
Change-Id: Ie66c65b3a7ae13b4e98ed8038a6a534f06eae0e5
The 64-bit uapi headers don't define FD_CLR and friends, so this
patch updates libc/kernel/common/linux/time.h after the change
b934bbec145e9e084bf48149a3a94ae3dd132157 in external/kernel-headers,
then fixes <sys/select.h> to work in this new world, and removes
some now-unnecessary duplication from <time.h> (with other cruft
cleaned up while I'm here).
Change-Id: Ifd26f901b4d200c65065b3e6ef1b74055127e052
(aarch64 kernels only have the newer system calls.)
Also expose the new functionality that's exposed by glibc in our header files.
Change-Id: I45d2d168a03f88723d1f7fbf634701006a4843c5
Modern architectures only get the *at(2) system calls. For example,
aarch64 doesn't have open(2), and expects userspace to use openat(2)
instead.
Change-Id: I87b4ed79790cb8a80844f5544ac1a13fda26c7b5
Add 64-bit stat structure mapping 64-bit stat syscall.
Change-Id: Ice517616391bee1d556b6c03e7f5ee610050e6c6
Signed-off-by: Pavel Chupin <pavel.v.chupin@intel.com>
SOCK_CLOEXEC is used to atomically set close-on-exec flag for the new
descriptor(s), and SOCK_NONBLOCK is used to mark descriptor(s) as
non-blocking.
Change-Id: I8ba6a70543d23759e3ddcc7ff9c21b567184d681
This is basically the other half of I5de76f6c46ac87779f207d568a86bb453e2414de
from Pavel Chupin <pavel.v.chupin@intel.com>, but taking the exact upstream
_types.h instead of the modified version. (I was confused when I suggested
otherwise.)
I've also cleaned up the internal_types.h situation; we weren't gaining
anything from these empty files, and there is no upstream internal_types.h
for x86_64.
Change-Id: I802a9a6a8df1c979e820659212c75a47c2ef392e
Make sure the buffer we're dealing with has enough room.
Might as well check for memory issues while we're here,
even though I don't imagine they'll happen in practice.
Change-Id: I0ae1f0f06aca9ceb91e58c70183bb14e275b92b5
This touches the x86 stubs too because arm, x86, and x86_64 now
all share the same header (at a source level), which causes a
reordering of the #include lines.
Change-Id: If9a1e2b2718bd41d8399fea748bce672c513ef84
Manual changes:
cpp.py: cope with macros that refer to other macros.
defaults.py: x86 no longer always implies __i386__; use __i386__ to replace
the kernel CONFIG_X86_32 flag.
asm/page.h: the upstream page.h isn't a uapi header and no longer includes
the stuff we were using it for. Let's just have our own static file, since
it's the same for all our architectures (both 32- and 64-bit).
sys/select.h: we used to use the various FD_SET-related macros from the
kernel header files, but they've gone. Adjust by adding trivial equivalent
definitions.
Automated changes:
libc/kernel/arch-x86, libc/kernel/common: regenerated from
external/kernel-headers.
Change-Id: I84fc0ed52dc742e043b4ae300fd3b58ee99b7fcd
Fortify calls to recv() and recvfrom().
We use __bos0 to match glibc's behavior, and because I haven't
tested using __bos.
Change-Id: Iad6ae96551a89af17a9c347b80cdefcf2020c505
This adds mmap64() to bionic so that it is possible to have
large offset passed to kernel. However, the syscall mechanism
only passes 32-bit number to kernel. So effectively, the
largest offset that can be passed is about 43 bits (since
offset is signed, and the number passed to kernel is number
of pages (page size == 4K => 12 bits)).
Change-Id: Ib54f4e9b54acb6ef8b0324f3b89c9bc810b07281
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Introduce __bos0 as a #define for __builtin_object_size((s), 0).
This macro is intended to be used for places where the standard
__bos macro isn't appropriate.
memcpy, memmove, and memset deliberately use __bos0. This is done
for two reasons:
1) I haven't yet tested to see if __bos is safe to use.
2) glibc uses __bos0 for these methods.
Change-Id: Ifbe02efdb10a72fe3529dbcc47ff647bde6feeca
Also make sysconf use PTHREAD_STACK_MIN rather than redefining its
own, different, constant.
Bug: 9997352
Change-Id: I9a8e7d2b18e691439abfb45533e82c36eee9e81d
On NetBSD and glibc, including sys/ioctl.h provides some
terminal ioctl data structures such as struct winsize. For
compatibility, provide these via sys/ioctl.h in bionic as well.
bionic does not have its own definitions for these structures, so
get them from the Linux kernel definitions.
Change-Id: I01345c23c0bebd60b0a80fc33668e7c0ad7356c3
Allow a new bionic to work with an old init property area by supporting
the old format.
(cherry picked from commit ad76c85b9c)
Change-Id: Ib496e818a62a5834d40c71eb4745783d998be893
d329697 is too complicated. Change the multiple property pages back to
a single 128K property area that's mapped in entirely at initialization
(the memory will not get allocated until the pages are touched).
d329697 has other changes useful for testing (moving property area
initialization inside bionic and adding __system_property_set_filename)
so undo the change manually rather than with git revert.
Signed-off-by: Greg Hackmann <ghackmann@google.com>
(cherry picked from commit 5f05348c18)
Change-Id: I690704552afc07a4dd410277893ca9c40bc13e5f
See the comments for an explanation of how properties are stored.
The trie structure is designed to scale better than the previous
array-based implementation. Searching an array with n properties
required average O(n) string compares of the entire key; searching the
trie requires average O(log n) string compares of each token (substrings
between '.' characters).
Signed-off-by: Greg Hackmann <ghackmann@google.com>
(cherry picked from commit 6ac8e6a46d)
Change-Id: Icbe31908572f33b4d9b85d5b62ac837cbd0f85e0
The property area is initially one 4K region, automatically expanding as
needed up to 64 regions.
To avoid duplicating code, __system_property_area_init() now allocates
and initializes the first region (previously it was allocated in init's
init_property_area() and initialized in bionic). For testing purposes,
__system_property_set_filename() may be used to override the file used
to map in regions.
Signed-off-by: Greg Hackmann <ghackmann@google.com>
(cherry picked from commit d32969701b)
Change-Id: I038d451fe8849b0c4863663eec6f57f6521bf4a7
find_nth() will be inefficient on a trie. Since find_nth() is only used
internally and only for enumerating properties, we can add a foreach()
function to do this directly.
Signed-off-by: Greg Hackmann <ghackmann@google.com>
(cherry picked from commit 577418403d)
Change-Id: Iaca97d1182ce2c28863ba85241cbb5cf6185eb2f
In 829c089f83, we disabled all
FORTIFY_SOURCE support when compiling under clang. At the time,
we didn't have proper test cases, and couldn't easily create targeted
clang tests.
This change re-enables FORTIFY_SOURCE support under clang for a
limited set of functions, where we have explicit unittests available.
The functions are:
* memcpy
* memmove
* strcpy
* strncpy
* strcat
* strncat
* memset
* strlen (with modifications)
* strchr (with modifications)
* strrchr (with modifications)
It may be possible, in the future, to enable other functions. However,
I need to write unittests first.
For strlen, strchr, and strrchr, clang unconditionally calls the
fortified version of the relevant function. If it doesn't know the
size of the buffer it's dealing with, it passes in ((size_t) -1),
which is the largest possible size_t.
I added two new clang specific unittest files, primarily copied
from fortify?_test.cpp.
I've also rebuild the entire system with these changes, and didn't
observe any obvious problems.
Change-Id: If12a15089bb0ffe93824b485290d05b14355fcaa
Define __errordecl and replace __attribute__((__error__("foo")))
with __errordecl. Make sure __errordecl is a no-op on clang, as it
generates a compile time warning.
Change-Id: Ifa1a2d3afd6881de9d479fc2adac6737871a2949
Move the implementation of writing to the system property area
from init to bionic, next to the reader implementation. This
will allow full property testing to be added to bionic tests.
Add new accessor and waiting functions to hide the implementation
from watchprops and various bionic users.
Also hide some of the implementation details of the property area
from init by moving them into _system_properties.h, and other details
from everybody by moving them into system_properties.h.
(cherry picked from commit dc1038b790)
Change-Id: I192d3825ee276c5047bc751039fe6cfe226a7cca
Add support for fortify source level 2 to strncpy.
This will enable detection of more areas where strncpy
is used inappropriately. For example, this would have detected
bug 8727221.
Move the fortify_source tests out of string_test.cpp, and
put it into fortify1_test.cpp.
Create a new fortify2_test.cpp file, which copies all
the tests in fortify1_test.cpp, and adds fortify_source level
2 specific tests.
Change-Id: Ica0fba531cc7d0609e4f23b8176739b13f7f7a83
