From: Florian Weimer <fweimer@redhat.com>
To: Arnd Bergmann <arnd@arndb.de>, Joseph Myers <joseph@codesourcery.com>
Cc: Mao Han <han_mao@c-sky.com>,
GNU C Library <libc-alpha@sourceware.org>,
c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com
Subject: struct elf_prstatus and Y2038 (was: Re: [PATCH v4 06/13] C-SKY: Linux ABI)
Date: Wed, 12 Sep 2018 21:28:00 -0000 [thread overview]
Message-ID: <9466b02a-ddca-9baf-c9b5-83d06af3a5fa@redhat.com> (raw)
In-Reply-To: <CAK8P3a0EvmaMfhBYLq_1YNX6Mp7DKtBfL6r6H0tC3O2zKDOQ=Q@mail.gmail.com>
On 09/12/2018 05:34 PM, Arnd Bergmann wrote:
> Speaking of this file, I think we still need a solution for elf_prstatus
> containing a 'timeval' after time_t becomes 64-bit wide. I actually
> have a patch to change the kernel header file declaring the
> same structure, but I had not realized that glibc contains another
> copy.
>
> https://sourceware.org/glibc/wiki/Y2038ProofnessDesign mentions
> that type, but not what to do about it. What I did in the kernel
> was to change the type of pr_utime/pr_stime/pr_cutime/pr_cstime
> to something that keeps using 'long' fields. Given that we can't
> change the file format in an incompatible way, and that 32-bit
> is sufficient here, that seemed like the most appropriate solution.
Keeping 32 bits there looks reasonable. I thought we had a port where
time_t isn't long, but that doesn't seem to be the case.
Ah, I think it's actually s390, where suseconds_t is int, not long.
Presumably that will need a special case so that existing format
specifiers etc. are not disturbed unnecessarily.
Thanks,
Florian
next prev parent reply other threads:[~2018-09-12 21:28 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-12 2:56 [PATCH v4 00/13] port C-SKY to glibc Mao Han
[not found] ` <cover.1536720821.git.han_mao@c-sky.com>
2018-09-12 2:56 ` [PATCH v4 01/13] C-SKY: ABI related code Mao Han
2018-09-12 4:16 ` H.J. Lu
2018-09-12 7:07 ` Mao Han
2018-09-12 8:23 ` Florian Weimer
2018-09-12 9:06 ` Mao Han
2018-09-29 1:46 ` Palmer Dabbelt
2018-09-30 9:04 ` Manuel A. Fernandez Montecelo
2018-10-01 8:18 ` Richard W.M. Jones
2018-09-17 21:46 ` Joseph Myers
2018-09-18 6:09 ` Mao Han
2018-09-12 2:56 ` [PATCH v4 05/13] C-SKY: Linux Syscall Interface Mao Han
2018-09-12 2:56 ` [PATCH v4 02/13] C-SKY: TLS support Mao Han
2018-09-12 2:56 ` [PATCH v4 03/13] C-SKY: Math support Mao Han
2018-09-17 21:49 ` Joseph Myers
2018-09-18 6:05 ` Mao Han
2018-09-12 2:57 ` [PATCH v4 13/13] C-SKY: Skeleton documentation Mao Han
2018-09-12 2:57 ` [PATCH v4 06/13] C-SKY: Linux ABI Mao Han
2018-09-12 13:40 ` Arnd Bergmann
2018-09-12 14:21 ` Joseph Myers
2018-09-12 15:34 ` Arnd Bergmann
2018-09-12 21:28 ` Florian Weimer [this message]
2018-09-13 10:48 ` struct elf_prstatus and Y2038 (was: Re: [PATCH v4 06/13] C-SKY: Linux ABI) Arnd Bergmann
2018-09-13 10:56 ` struct elf_prstatus and Y2038 Florian Weimer
2018-09-13 8:17 ` [PATCH v4 06/13] C-SKY: Linux ABI Mao Han
2018-09-13 8:46 ` Arnd Bergmann
2018-09-13 15:32 ` [gnu-csky] " Joseph Myers
2018-09-13 16:35 ` Joseph Myers
2018-09-13 20:47 ` Arnd Bergmann
2018-09-13 20:59 ` Joseph Myers
2018-09-13 21:32 ` Arnd Bergmann
2018-09-13 22:57 ` Joseph Myers
2018-09-13 20:31 ` Arnd Bergmann
2018-09-13 20:49 ` Joseph Myers
2018-09-13 21:38 ` Arnd Bergmann
2018-09-12 2:57 ` [PATCH v4 08/13] C-SKY: Linux Startup and Dynamic Loading Code Mao Han
2018-09-12 2:57 ` [PATCH v4 12/13] C-SKY: Add build-many-glibcs.py support Mao Han
2018-09-12 2:57 ` [PATCH v4 09/13] C-SKY: Add dynamic relocations to elf.h Mao Han
2018-09-12 2:57 ` [PATCH v4 11/13] C-SKY: Add ABI definitions in config.h.in Mao Han
2018-09-12 3:05 ` [PATCH v4 04/13] C-SKY: NPTL support and Atomic Mao Han
2018-09-12 3:05 ` [PATCH v4 07/13] C-SKY: ABI Lists Mao Han
2018-09-12 6:51 ` Andreas Schwab
2018-09-12 7:12 ` Mao Han
2018-09-12 12:35 ` Joseph Myers
2018-09-12 13:46 ` Andreas Schwab
2018-09-12 15:19 ` Joseph Myers
2018-09-13 8:23 ` Mao Han
2018-09-12 3:05 ` [PATCH v4 10/13] C-SKY: Build Infastructure Mao Han
2018-09-17 21:52 ` Joseph Myers
2018-09-18 6:02 ` Mao Han
2018-09-12 3:05 ` [PATCH 1/1] Update config.guess and config.sub to current versions Mao Han
2018-09-12 12:31 ` [PATCH v4 00/13] port C-SKY to glibc Joseph Myers
2018-09-13 8:14 ` Mao Han
2018-09-13 12:36 ` Joseph Myers
2018-09-18 6:22 ` Mao Han
2018-09-18 7:18 ` Mao Han
2018-09-18 11:43 ` Joseph Myers
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