linux-kernel - Re: CONFIG_* symbols in UAPI headers?

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Date:   Tue, 09 Apr 2019 22:54:49 +0200
From:   Paul Bolle <pebolle@...cali.nl>
To:     Christoph Hellwig <hch@....de>, Jie Zhang <jie.zhang@...log.com>
Cc:     Mike Frysinger <vapier@...too.org>,
        David Howells <dhowells@...hat.com>,
        Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: CONFIG_* symbols in UAPI headers?

Paul Bolle schreef op di 09-04-2019 om 21:11 [+0200]:
> Does it still apply?

It does, cleanly. Output is (for v5.1-rc4):

./usr/include/asm-generic/fcntl.h:119: leaks CONFIG_64BIT to userspace where it is not valid
./usr/include/asm-generic/mman-common.h:22: leaks CONFIG_MMAP_ALLOW_UNINITIALIZED to userspace where it is not valid
./usr/include/linux/elfcore.h:62: leaks CONFIG_BINFMT_ELF_FDPIC to userspace where it is not valid
./usr/include/linux/flat.h:17: leaks CONFIG_BINFMT_SHARED_FLAT to userspace where it is not valid
./usr/include/linux/atmdev.h:104: leaks CONFIG_COMPAT to userspace where it is not valid
./usr/include/linux/pktcdvd.h:37: leaks CONFIG_CDROM_PKTCDVD_WCACHE to userspace where it is not valid
./usr/include/linux/raw.h:17: leaks CONFIG_MAX_RAW_DEVS to userspace where it is not valid
./usr/include/linux/hw_breakpoint.h:27: leaks CONFIG_HAVE_MIXED_BREAKPOINTS_REGS to userspace where it is not valid
./usr/include/linux/eventpoll.h:82: leaks CONFIG_PM_SLEEP to userspace where it is not valid
./usr/include/asm/auxvec.h:14: leaks CONFIG_IA32_EMULATION to userspace where it is not valid
./usr/include/asm/mman.h:7: leaks CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS to userspace where it is not valid

Which suggests it might be doable to silence these warnings.


Paul Bolle