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serenity/Userland/Libraries/LibC
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Patrick Meyer 83f88df757 Kernel: Add option to build with coverage instrumentation and KCOV 
GCC and Clang allow us to inject a call to a function named
__sanitizer_cov_trace_pc on every edge. This function has to be defined
by us. By noting down the caller in that function we can trace the code
we have encountered during execution. Such information is used by
coverage guided fuzzers like AFL and LibFuzzer to determine if a new
input resulted in a new code path. This makes fuzzing much more
effective.

Additionally this adds a basic KCOV implementation. KCOV is an API that
allows user space to request the kernel to start collecting coverage
information for a given user space thread. Furthermore KCOV then exposes
the collected program counters to user space via a BlockDevice which can
be mmaped from user space.

This work is required to add effective support for fuzzing SerenityOS to
the Syzkaller syscall fuzzer. :^) :^)
2021-07-26 17:40:28 +02:00
..
arch LibC: Use our implementation of crti.o and crtn.o 2021-07-14 13:12:25 +02:00
arpa Userland: Treat inet_pton returning 0 as an error 2021-05-27 22:56:21 +02:00
bits LibC+LibPthread: Add PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP 2021-07-05 23:30:15 +02:00
net Kernel: Support ioctl SIOCSARP and SIOCDARP 2021-07-25 17:57:08 +02:00
netinet LibC: Add definitions/stubs for IPv6 functionality 2021-05-09 21:16:11 +02:00
sys Kernel: Add option to build with coverage instrumentation and KCOV 2021-07-26 17:40:28 +02:00
alloca.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
assert.cpp LibC: Simplify assertion failure dbgln() a bit 2021-07-21 17:45:24 +02:00
assert.h LibC: Use C-style void cast in assert() 2021-07-13 19:02:20 +01:00
byteswap.h Everywhere: Use "the SerenityOS developers." in copyright headers 2021-04-29 00:59:26 +02:00
CMakeLists.txt LibC: Implement flock(2) using fcntl's F_SETLK 2021-07-20 17:44:30 +04:30
crt0.cpp LibC: Use 64-bit stack smash value for 64-bit mode 2021-07-17 01:45:20 +02:00
crt0_shared.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
ctype.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
ctype.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
cxxabi.cpp LibC: Don't use C++ attribute syntax in C-visible headers 2021-07-03 01:56:31 +04:30
dirent.cpp LibC: Fix struct layout for sys_dirent on x86_64 2021-06-29 20:03:36 +02:00
dirent.h LibC: Implement scandir(...) to enumerate directories. 2021-05-02 13:33:41 +02:00
dlfcn.cpp LibC+LibELF: Implement dladdr() 2021-06-06 22:16:11 +02:00
elf.h Userland: Prefer using ARCH() over __LP64__ 2021-07-13 23:19:33 +02:00
endian.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
errno.h LibC: Don't clear errno on success 2021-05-30 19:37:32 +02:00
errno_numbers.h LibC: Add definition for EDQUOT 2021-05-08 18:11:52 +02:00
fcntl.cpp Userland+LibCore: Update FileWatcher + its users for InodeWatcher 2.0 2021-05-12 22:38:20 +02:00
fcntl.h Kernel+LibC: Implement fcntl(2) advisory locks 2021-07-20 17:44:30 +04:30
fd_set.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
fenv.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
fenv.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
float.h LibC: Don't include fenv.h from float.h 2021-07-08 10:11:00 +02:00
getopt.cpp LibC+Utilities: Add gnu::format attributes 2021-07-08 10:11:00 +02:00
getopt.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
grp.cpp LibC: Add putgrent 2021-07-15 11:16:58 +02:00
grp.h LibC: Fix grp.h includes 2021-07-17 13:00:33 +02:00
iconv.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
inttypes.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
inttypes.h LibC: Don't include AK headers in system headers 2021-07-15 23:51:59 +02:00
ioctl.cpp LibC: Don't truncate arguments for ioctl() on x86_64 2021-07-22 04:18:39 +04:30
libcinit.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
libgen.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
libgen.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
limits.h Userland: Move HOST_NAME_MAX to limits.h 2021-04-27 23:06:16 +02:00
link.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
link.h Userland: Prefer using ARCH() over __LP64__ 2021-07-13 23:19:33 +02:00
locale.cpp LibC: Let setlocale() pretend that setting the locale succeeded 2021-06-05 10:56:37 +02:00
locale.h LibC: Add definition for LC_MESSAGES 2021-05-08 19:14:21 +02:00
malloc.cpp LibC: Randomize malloc() block addresses on x86_64 2021-07-25 18:01:24 +02:00
mallocdefs.h LibC: Increase minimum alignment for malloc() to 16 bytes 2021-07-13 17:31:22 +02:00
memory.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
mntent.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
mntent.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
net.cpp LibC: Add definitions/stubs for IPv6 functionality 2021-05-09 21:16:11 +02:00
netdb.cpp LibC: Replace fprintf(stderr) with warnln() 2021-05-31 17:43:54 +01:00
netdb.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
paths.h Everywhere: Use "the SerenityOS developers." in copyright headers 2021-04-29 00:59:26 +02:00
poll.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
poll.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
pthread_forward.cpp LibC+AK: Remove our custom macros from <assert.h> 2021-06-08 17:29:57 +02:00
pthread_integration.cpp LibC: Only set owner on recursive mutexes 2021-07-06 17:25:34 +02:00
pthread_tls.cpp Toolchain+Userland: Enable TLS for x86_64 2021-07-04 01:07:28 +02:00
pty.cpp LibC: openpty error handling update 2021-05-30 08:41:17 +02:00
pty.h LibC: Remove 'int* aslave' parameter from forkpty() 2021-05-06 13:52:46 +01:00
pwd.cpp LibC: Do not include errno.h inside unistd.h 2021-05-14 22:24:02 +02:00
pwd.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
qsort.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
regex.h LibRegex+LibC: Make re_nsub available to the user 2021-07-13 07:04:06 +02:00
scanf.cpp LibC: Make scanf always copy its va_list 2021-07-17 00:43:34 +02:00
sched.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
sched.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
serenity.cpp Kernel+KeyboardSettings: Remove numlock syscall and implement ioctl 2021-07-07 10:44:20 +02:00
serenity.h LibC+LibPthread: Use FUTEX_PRIVATE_FLAG in more places 2021-07-07 17:08:40 +02:00
setjmp.h LibC: Fix jmp_buf layout on x86_64 2021-07-01 12:05:59 +02:00
shadow.cpp LibC: Allow empty spwd members when writing shadow entries via putspent 2021-05-30 17:42:03 +01:00
shadow.h LibCore: Fix building the library on macOS 2021-05-01 15:56:16 +02:00
signal.cpp LibC: Add stub implementation for sigsuspend 2021-06-09 19:41:23 +01:00
signal.h LibC: Fix typo in signal.h: ol_dset -> old_set 2021-04-26 11:27:13 +02:00
signal_numbers.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
spawn.cpp LibC: Do not include errno.h inside unistd.h 2021-05-14 22:24:02 +02:00
spawn.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
ssp.cpp LibC: Use 64-bit stack smash value for 64-bit mode 2021-07-17 01:45:20 +02:00
stat.cpp Kernel+LibC: Add fstatat 2021-05-14 23:32:10 +02:00
stdarg.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
stddef.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
stdint.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
stdio.cpp Everywhere: Fix some alignment issues 2021-07-03 01:56:31 +04:30
stdio.h LibC: Add P_tmpdir macro 2021-06-21 12:21:03 +02:00
stdio_ext.h LibC: Implement __fpurge 2021-05-30 14:56:50 +01:00
stdlib.cpp LibC strtod: Reduce incremental error to nearly nothing 2021-07-18 12:45:10 +01:00
stdlib.h LibC: Implement mblen() 2021-06-04 10:39:41 +02:00
string.cpp LibC: Implement memcpy and memset for x86_64 2021-06-28 22:29:28 +02:00
string.h LibC: Implement strerror_r() 2021-05-25 17:36:02 +02:00
strings.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
strings.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
stubs.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
sysexits.h LibC: Use EX_IOERR instead of EX_IOER 2021-06-10 20:21:08 +01:00
syslog.cpp LibC: Convert StringBuilder::appendf() => AK::Format 2021-05-07 21:12:09 +02:00
syslog.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
termcap.cpp LibC: Make tgetnum() return -1 if capability is not available 2021-06-09 19:41:23 +01:00
termcap.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
termios.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
termios.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
time.cpp Revert "Userland: static vs non-static constexpr variables" 2021-05-21 10:30:52 +01:00
time.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
times.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
ulimit.cpp LibC: Add stubs for getrlimit()/setrlimit() 2021-05-08 19:14:21 +02:00
ulimit.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
unistd.cpp Kernel+LibC: Remove sys$donate() 2021-07-05 23:30:15 +02:00
unistd.h Kernel+LibC: Remove sys$donate() 2021-07-05 23:30:15 +02:00
utime.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
utime.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
utmp.h Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
utsname.cpp Everything: Move to SPDX license identifiers in all files. 2021-04-22 11:22:27 +02:00
wchar.cpp LibC: Stub out btowc 2021-05-30 14:56:50 +01:00
wchar.h LibC: Add stubs for wctype and iswctype 2021-05-30 14:56:50 +01:00
wctype.cpp LibC: Declare wide character type functions in wctype.h 2021-07-26 11:36:21 +02:00
wctype.h LibC: Declare wide character type functions in wctype.h 2021-07-26 11:36:21 +02:00