From: Peter Zijlstra <peterz@infradead.org>
To: Masahiro Yamada <masahiroy@kernel.org>
Cc: Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
Jessica Yu <jeyu@kernel.org>,
Michal Marek <michal.lkml@markovi.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 03/29] modpost: add read_text_file() and get_line() helpers
Date: Wed, 20 May 2020 14:29:20 +0200 [thread overview]
Message-ID: <20200520122920.GB325280@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <CAK7LNARkUkdRsW0D5cc5cEtXFJfnKhiVuZvrD6T1Xg3sr9kv=A@mail.gmail.com>
On Wed, May 20, 2020 at 09:17:45PM +0900, Masahiro Yamada wrote:
> The specification [1] says this:
>
> "The value returned may be less than nbyte if the number of bytes
> left in the file is less than nbyte, if the read() request was
> interrupted by a signal, or if the file is a pipe or FIFO or
> special file and has fewer than nbyte bytes immediately available
> for reading."
>
>
> This case does not meet any of 'if ...' parts.
So nobody ever ^Z's their build? I really don't think you can assume
that you'll never get a signal. That's just asking for trouble.
Doing the right thing here is 'trivial', there is absolutely no reason
to not do it.
next prev parent reply other threads:[~2020-05-20 12:29 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-17 9:48 [PATCH 00/29] modpost: various fixes, cleanups, optimizations Masahiro Yamada
2020-05-17 9:48 ` [PATCH 01/29] modpost: drop RCS/CVS $Revision handling in MODULE_VERSION() Masahiro Yamada
2020-05-17 9:48 ` [PATCH 02/29] modpost: do not call get_modinfo() for vmlinux Masahiro Yamada
2020-05-17 9:48 ` [PATCH 03/29] modpost: add read_text_file() and get_line() helpers Masahiro Yamada
2020-05-19 10:21 ` Peter Zijlstra
2020-05-20 12:17 ` Masahiro Yamada
2020-05-20 12:29 ` Peter Zijlstra [this message]
2020-05-23 4:18 ` Masahiro Yamada
2020-05-17 9:48 ` [PATCH 04/29] modpost: fix potential mmap'ed file overrun in get_src_version() Masahiro Yamada
2020-05-17 9:48 ` [PATCH 05/29] modpost: re-add warning about missing *.mod file Masahiro Yamada
2020-05-17 9:48 ` [PATCH 06/29] modpost: avoid false-positive file open error Masahiro Yamada
2020-05-17 9:48 ` [PATCH 07/29] modpost: use read_text_file() and get_line() for reading text files Masahiro Yamada
2020-05-17 9:48 ` [PATCH 08/29] modpost: remove get_next_text() and make {grab,release_}file static Masahiro Yamada
2020-05-17 9:48 ` [PATCH 09/29] kbuild: disallow multi-word in M= or KBUILD_EXTMOD Masahiro Yamada
2020-05-17 12:33 ` David Laight
2020-05-21 3:57 ` Masahiro Yamada
2020-05-17 9:48 ` [PATCH 10/29] modpost: move -T option close to the modpost command Masahiro Yamada
2020-05-17 9:48 ` [PATCH 11/29] modpost: pass -N option only for modules modpost Masahiro Yamada
2020-05-17 9:48 ` [PATCH 12/29] modpost: move external module options Masahiro Yamada
2020-05-17 9:48 ` [PATCH 13/29] modpost: load KBUILD_EXTRA_SYMBOLS files in order Masahiro Yamada
2020-05-17 9:48 ` [PATCH 14/29] modpost: track if the symbol origin is a dump file or ELF object Masahiro Yamada
2020-05-17 9:48 ` [PATCH 15/29] modpost: allow to pass -i option multiple times remove -e option Masahiro Yamada
2020-05-17 9:48 ` [PATCH 16/29] modpost: rename ext_sym_list to dump_list Masahiro Yamada
2020-05-17 9:48 ` [PATCH 17/29] modpost: re-add -e to set external_module flag Masahiro Yamada
2020-05-17 9:48 ` [PATCH 18/29] modpost: show warning if vmlinux is not found when processing modules Masahiro Yamada
2020-05-17 9:48 ` [PATCH 19/29] modpost: show warning if it fails to read symbol dump file Masahiro Yamada
2020-05-17 9:48 ` [PATCH 20/29] modpost: generate vmlinux.symvers and reuse it for the second modpost Masahiro Yamada
2020-05-17 9:48 ` [PATCH 21/29] modpost: remove -s option Masahiro Yamada
2020-05-17 9:48 ` [PATCH 22/29] modpost: remove mod->is_dot_o struct member Masahiro Yamada
2020-05-17 9:48 ` [PATCH 23/29] modpost: remove is_vmlinux() call in check_for_{gpl_usage,unused}() Masahiro Yamada
2020-05-17 9:48 ` [PATCH 24/29] modpost: add mod->is_vmlinux struct member Masahiro Yamada
2020-05-17 9:48 ` [PATCH 25/29] modpost: remove mod->skip " Masahiro Yamada
2020-05-17 9:48 ` [PATCH 26/29] modpost: set have_vmlinux in new_module() Masahiro Yamada
2020-05-17 9:48 ` [PATCH 27/29] modpost: strip .o from modname before calling new_module() Masahiro Yamada
2020-05-17 9:48 ` [PATCH 28/29] modpost: remove is_vmlinux() helper Masahiro Yamada
2020-05-17 9:48 ` [PATCH 29/29] modpost: change elf_info->size to size_t Masahiro Yamada
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