def build_vmtest(dir: str) -> Dict[str, str]:
os.makedirs(dir, exist_ok=True)
init = os.path.join(dir, "init")
init_c = os.path.relpath(os.path.join(os.path.dirname(__file__), "init.c"))
if out_of_date(init, init_c):
_compile("-o",
init,
init_c,
CPPFLAGS="-D_GNU_SOURCE",
LDFLAGS="-static")
onoatimehack_so = os.path.join(dir, "onoatimehack.so")
onoatimehack_c = os.path.relpath(
os.path.join(os.path.dirname(__file__), "onoatimehack.c"))
if out_of_date(onoatimehack_so, onoatimehack_c):
_compile(
"-o",
onoatimehack_so,
onoatimehack_c,
CPPFLAGS="-D_GNU_SOURCE",
CFLAGS="-fPIC",
LDFLAGS="-shared",
LIBADD="-ldl",
)
return {
"init": init,
"onoatimehack": onoatimehack_so,
}
def _run_autoreconf(self):
if out_of_date(
"libdrgn/Makefile.in", "libdrgn/Makefile.am", "libdrgn/configure.ac"
) or out_of_date("libdrgn/configure", "libdrgn/configure.ac"):
try:
subprocess.check_call(["autoreconf", "-i", "libdrgn"])
except Exception:
with contextlib.suppress(FileNotFoundError):
os.remove("libdrgn/configure")
with contextlib.suppress(FileNotFoundError):
os.remove("libdrgn/Makefile.in")
raise
def _run_autoreconf(self, dir):
configure = os.path.join(dir, "configure")
configure_ac = os.path.join(dir, "configure.ac")
makefile_am = os.path.join(dir, "Makefile.am")
makefile_in = os.path.join(dir, "Makefile.in")
if out_of_date(makefile_in, makefile_am, configure_ac) or out_of_date(
configure, configure_ac):
try:
subprocess.check_call(["autoreconf", "-i", dir])
except Exception:
with contextlib.suppress(FileNotFoundError):
os.remove(configure)
with contextlib.suppress(FileNotFoundError):
os.remove(makefile_in)
raise
def _build_kmod(self, kernel_dir, kmod):
kernel_build_dir = kernel_dir / "build"
# External modules can't do out-of-tree builds for some reason, so copy
# the source files to a temporary directory and build the module there,
# then move it to the final location.
kmod_source_dir = Path("tests/linux_kernel/kmod")
source_files = ("drgn_test.c", "Makefile")
if out_of_date(
kmod,
*[kmod_source_dir / filename for filename in source_files]):
with tempfile.TemporaryDirectory(dir=kmod.parent) as tmp_name:
tmp_dir = Path(tmp_name)
# Make sure that header files have the same paths as in the
# original kernel build.
debug_prefix_map = [
f"{kernel_build_dir.resolve()}=.",
f"{tmp_dir.resolve()}=./drgn_test",
]
cflags = " ".join(
["-fdebug-prefix-map=" + map for map in debug_prefix_map])
for filename in source_files:
copy_file(kmod_source_dir / filename, tmp_dir / filename)
if (subprocess.call([
"make",
"-C",
kernel_build_dir,
f"M={tmp_dir.resolve()}",
"KAFLAGS=" + cflags,
"KCFLAGS=" + cflags,
"-j",
str(nproc()),
]) != 0):
return False
(tmp_dir / "drgn_test.ko").rename(kmod)
return True
def _build_onoatimehack(dir: Path) -> Path:
dir.mkdir(parents=True, exist_ok=True)
onoatimehack_so = dir / "onoatimehack.so"
onoatimehack_c = (Path(__file__).parent / "onoatimehack.c").relative_to(
Path.cwd())
if out_of_date(onoatimehack_so, onoatimehack_c):
_compile(
"-o",
str(onoatimehack_so),
str(onoatimehack_c),
CPPFLAGS="-D_GNU_SOURCE",
CFLAGS="-fPIC",
LDFLAGS="-shared",
LIBADD="-ldl",
)
return onoatimehack_so
def _build_onoatimehack(dir: str) -> str:
os.makedirs(dir, exist_ok=True)
onoatimehack_so = os.path.join(dir, "onoatimehack.so")
onoatimehack_c = os.path.relpath(
os.path.join(os.path.dirname(__file__), "onoatimehack.c"))
if out_of_date(onoatimehack_so, onoatimehack_c):
_compile(
"-o",
onoatimehack_so,
onoatimehack_c,
CPPFLAGS="-D_GNU_SOURCE",
CFLAGS="-fPIC",
LDFLAGS="-shared",
LIBADD="-ldl",
)
return onoatimehack_so