[Bug 3349] Test sshd in chroot fails when syscall close_range is undefined and openssh is built with glibc 2.34

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3349

Darren Tucker <dtucker at dtucker.net> changed:

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--- Comment #7 from Darren Tucker <dtucker at dtucker.net> ---
Created attachment 3551
  --> https://bugzilla.mindrot.org/attachment.cgi?id=3551&action=edit
use close_range with fallback

(In reply to Florian Weimer from comment #6)
> This patch is not the right way to do this. You should call
> close_range (either the glibc wrapper or the system call via the
> generic syscall function) and perform emulation as a fallback.
> Failure with close_range (including lack of kernel support) does not
> terminate the process.

oh, I didn't realise close_range was exposed by glibc.

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