GNU bug report logs - #43513
readdir misbehaves when running 32-bit user space on a 64-bit-kernel - kernel/userspace interface mismatch in getdents64

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From: Danny Milosavljevic <dannym <at> scratchpost.org>
To: 43513 <at> debbugs.gnu.org
Subject: bug#43513: json-c build failure (on armhf-linux) while trying to build u-boot
Date: Mon, 21 Sep 2020 14:44:41 +0200

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> to have 64 bit offsets or 32 bit offsets[1].  Right now, from user space, that
> is only possible via process personality flags.

Or via CONFIG_X86_X32, which exposes extra syscalls ON x86_64 ONLY.

I guess that would be better than nothing--although glibc would have to look
seriously strange to use those:  Even on ARM, it would have to try this syscall
first, and then the normal one.  I don't think that that is reasonable to add
to glibc.

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