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Message-ID: <2c3f8638-4dad-566f-43c0-1579a6ae32ce@gmail.com>
Date: Tue, 16 Mar 2021 17:50:46 +0100
From: "Alejandro Colomar (man-pages)" <alx.manpages@...il.com>
To: Walter Harms <wharms@....de>
Cc: "linux-man@...r.kernel.org" <linux-man@...r.kernel.org>,
"libc-alpha@...rceware.org" <libc-alpha@...rceware.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Florian Weimer <fweimer@...hat.com>,
"mtk.manpages@...il.com" <mtk.manpages@...il.com>
Subject: Re: AW: [RFC v3 04/17] arch_prctl.2: SYNOPSIS: Remove unused includes
Hi Walter,
On 3/15/21 7:00 PM, Walter Harms wrote:
> I have learned the other way around:
> #include <sys/prctl.h>
> Is a general system header to use that may include
> the asm/prctrl.h what should never be included by
> userspace programms.
>
Are you sure that <sys/prctl.h> includes <asm/prctl.h>?
user@...ian:/usr/include$ grep -rn '\bARCH_'
asm-generic/statfs.h:42:#ifndef ARCH_PACK_STATFS64
asm-generic/statfs.h:43:#define ARCH_PACK_STATFS64
asm-generic/statfs.h:59:} ARCH_PACK_STATFS64;
asm-generic/statfs.h:65:#ifndef ARCH_PACK_COMPAT_STATFS64
asm-generic/statfs.h:66:#define ARCH_PACK_COMPAT_STATFS64
asm-generic/statfs.h:82:} ARCH_PACK_COMPAT_STATFS64;
x86_64-linux-gnu/asm/statfs.h:10:#define ARCH_PACK_COMPAT_STATFS64
__attribute__((packed,aligned(4)))
x86_64-linux-gnu/asm/prctl.h:5:#define ARCH_SET_GS 0x1001
x86_64-linux-gnu/asm/prctl.h:6:#define ARCH_SET_FS 0x1002
x86_64-linux-gnu/asm/prctl.h:7:#define ARCH_GET_FS 0x1003
x86_64-linux-gnu/asm/prctl.h:8:#define ARCH_GET_GS 0x1004
x86_64-linux-gnu/asm/prctl.h:10:#define ARCH_GET_CPUID 0x1011
x86_64-linux-gnu/asm/prctl.h:11:#define ARCH_SET_CPUID 0x1012
x86_64-linux-gnu/asm/prctl.h:13:#define ARCH_MAP_VDSO_X32 0x2001
x86_64-linux-gnu/asm/prctl.h:14:#define ARCH_MAP_VDSO_32 0x2002
x86_64-linux-gnu/asm/prctl.h:15:#define ARCH_MAP_VDSO_64 0x2003
x86_64-linux-gnu/asm/auxvec.h:13:/* entries in ARCH_DLINFO: */
user@...ian:/usr/include$ grep -rn 'asm/prctl.h'
user@...ian:/usr/include$
At least on my system, no header seems to be including <asm/prctl.h>.
Thanks,
Alex
--
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/
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