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use pathconf() to get _PC_CHOWN_RESTRICTED flag #41

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@mauke mauke commented Apr 18, 2024

The _PC_* constants are only meaningful in pathconf(); conversely, sysconf() only understands _SC_* constants.

Previously, this code didn't do anything meaningful. For example, on x64 Linux _PC_CHOWN_RESTRICTED is 6, which sysconf() would have interpreted as _SC_TZNAME_MAX (also 6).

Fixes #36.

The _PC_* constants are only meaningful in pathconf(); conversely,
sysconf() only understands _SC_* constants.

Previously, this code didn't do anything meaningful. For example, on x64
Linux _PC_CHOWN_RESTRICTED is 6, which sysconf() would have interpreted
as _SC_TZNAME_MAX (also 6).
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File::Temp::HIGH relies on a bogus _PC_CHOWN_RESTRICTED check
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