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Bound maxsize by 4096 when SC_ARG_MAX is not present

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Anthony Sottile 2019-04-01 09:23:42 -07:00
parent 5169f455c9
commit 681d78b6cf
1 changed files with 1 additions and 1 deletions
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2
pre_commit/xargs.py
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@ -25,7 +25,7 @@ def _environ_size(_env=None):
def _get_platform_max_length(): # pragma: no cover (platform specific) def _get_platform_max_length(): # pragma: no cover (platform specific)
if os.name == 'posix': if os.name == 'posix':
maximum = os.sysconf(str('SC_ARG_MAX')) - 2048 - _environ_size() maximum = os.sysconf(str('SC_ARG_MAX')) - 2048 - _environ_size()
maximum = min(maximum, 2 ** 17) maximum = max(min(maximum, 2 ** 17), 2 ** 12)
return maximum return maximum
elif os.name == 'nt': elif os.name == 'nt':
return 2 ** 15 - 2048 # UNICODE_STRING max - headroom return 2 ** 15 - 2048 # UNICODE_STRING max - headroom