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# Some things resolved about the execution site,
# so we dont have to repeat this everywhere
#
import os
import stat
import subprocess
import sys
import tempfile
from typing import Optional # pylint: disable=unused-import
from buildstream import utils, ProgramNotFoundError
from buildstream._platform import Platform
try:
GIT = utils.get_host_tool("git") # type: Optional[str]
HAVE_GIT = True
out = str(subprocess.check_output(["git", "--version"]), "utf-8")
# e.g. on Git for Windows we get "git version 2.21.0.windows.1".
# e.g. on Mac via Homebrew we get "git version 2.19.0".
version = tuple(int(x) for x in out.split(" ")[2].split(".")[:3])
HAVE_OLD_GIT = version < (1, 8, 5)
GIT_ENV = {
"GIT_AUTHOR_DATE": "1320966000 +0200",
"GIT_AUTHOR_NAME": "tomjon",
"GIT_AUTHOR_EMAIL": "tom@jon.com",
"GIT_COMMITTER_DATE": "1320966000 +0200",
"GIT_COMMITTER_NAME": "tomjon",
"GIT_COMMITTER_EMAIL": "tom@jon.com",
}
except ProgramNotFoundError:
GIT = None
HAVE_GIT = False
HAVE_OLD_GIT = False
GIT_ENV = dict()
try:
BZR = utils.get_host_tool("bzr") # type: Optional[str]
HAVE_BZR = True
# Breezy 3.0 supports `BRZ_EMAIL` but not `BZR_EMAIL`
BZR_ENV = {
"BZR_EMAIL": "Testy McTesterson <testy.mctesterson@example.com>",
"BRZ_EMAIL": "Testy McTesterson <testy.mctesterson@example.com>",
}
except ProgramNotFoundError:
BZR = None
HAVE_BZR = False
BZR_ENV = {}
try:
utils.get_host_tool("lzip")
HAVE_LZIP = True
except ProgramNotFoundError:
HAVE_LZIP = False
casd_path = utils.get_host_tool("buildbox-casd")
CASD_SEPARATE_USER = bool(os.stat(casd_path).st_mode & stat.S_ISUID)
del casd_path
IS_LINUX = sys.platform.startswith("linux")
IS_WINDOWS = os.name == "nt"
MACHINE_ARCH = Platform.get_host_arch()
HAVE_SANDBOX = None
BUILDBOX_RUN = None
try:
path = utils.get_host_tool("buildbox-run")
subprocess.run([path, "--capabilities"], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
BUILDBOX_RUN = os.path.basename(os.readlink(path))
HAVE_SANDBOX = "buildbox-run"
except (ProgramNotFoundError, OSError, subprocess.CalledProcessError):
pass
# Check if we have subsecond mtime support on the
# filesystem where @directory is located.
#
def have_subsecond_mtime(directory):
try:
test_file, test_filename = tempfile.mkstemp(dir=directory)
os.close(test_file)
except OSError:
# If we can't create a temp file, lets just say this is False
return False
try:
os.utime(test_filename, times=None, ns=(int(12345), int(12345)))
except OSError:
# If we can't set the mtime, lets just say this is False
os.unlink(test_filename)
return False
try:
stat_result = os.stat(test_filename)
except OSError:
# If we can't stat the file, lets just say this is False
os.unlink(test_filename)
return False
os.unlink(test_filename)
return stat_result.st_mtime_ns == 12345
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