[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 bugzilla-daemon at mindrot.org
Fri Oct 8 20:01:51 AEDT 2021


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

--- Comment #6 from Florian Weimer <fweimer at redhat.com> ---
(In reply to Darren Tucker from comment #5)
> Created attachment 3550 [details]
> shim closefrom and check kernel version

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.

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