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distro.py: avoid excessive stat calls (#46030)

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This commit is contained in:
Harmen Stoppels
2024-08-26 18:55:55 +02:00
committed by GitHub
parent cd6ee96398
commit 497e19f0e3
2 changed files with 58 additions and 11 deletions
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24
lib/spack/external/_vendoring/distro/distro.py vendored
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@@ -1265,27 +1265,29 @@ def _distro_release_info(self) -> Dict[str, str]:
match = _DISTRO_RELEASE_BASENAME_PATTERN.match(basename)
else:
try:
basenames = [
basename
for basename in os.listdir(self.etc_dir)
if basename not in _DISTRO_RELEASE_IGNORE_BASENAMES
and os.path.isfile(os.path.join(self.etc_dir, basename))
]
with os.scandir(self.etc_dir) as it:
etc_files = [
p.path for p in it
if p.is_file() and p.name not in _DISTRO_RELEASE_IGNORE_BASENAMES
]
# We sort for repeatability in cases where there are multiple
# distro specific files; e.g. CentOS, Oracle, Enterprise all
# containing `redhat-release` on top of their own.
basenames.sort()
etc_files.sort()
except OSError:
# This may occur when /etc is not readable but we can't be
# sure about the *-release files. Check common entries of
# /etc for information. If they turn out to not be there the
# error is handled in `_parse_distro_release_file()`.
basenames = _DISTRO_RELEASE_BASENAMES
for basename in basenames:
match = _DISTRO_RELEASE_BASENAME_PATTERN.match(basename)
etc_files = [
os.path.join(self.etc_dir, basename)
for basename in _DISTRO_RELEASE_BASENAMES
]
for filepath in etc_files:
match = _DISTRO_RELEASE_BASENAME_PATTERN.match(os.path.basename(filepath))
if match is None:
continue
filepath = os.path.join(self.etc_dir, basename)
distro_info = self._parse_distro_release_file(filepath)
# The name is always present if the pattern matches.
if "name" not in distro_info: