From: Alejandro Colomar <alx.manpages@gmail.com>
To: mtk.manpages@gmail.com
Cc: наб <nabijaczleweli@nabijaczleweli.xyz>,
linux-man@vger.kernel.org,
"Alejandro Colomar" <alx.manpages@gmail.com>
Subject: [PATCH 25/32] pipe.7: also mention writev(2) in atomicity sexion
Date: Wed, 28 Jul 2021 22:20:01 +0200 [thread overview]
Message-ID: <20210728202008.3158-26-alx.manpages@gmail.com> (raw)
In-Reply-To: <20210728202008.3158-1-alx.manpages@gmail.com>
From: наб <nabijaczleweli@nabijaczleweli.xyz>
writev(2) notes that buffers don't interleave with other process'
(a reasonable question to ask), but points to pipe(7) for an exception.
pipe(7) did /not/ mention "writev", "iov", "scat", or "gath", which are,
in order, reasonable search terms: this was confusing at best and
alarming at worst
By mentioning writev(2) in the heading, we clearly note that this sort
of interleaving behaviour matches write(2)'s and isn't a concern
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
---
man7/pipe.7 | 2 ++
1 file changed, 2 insertions(+)
diff --git a/man7/pipe.7 b/man7/pipe.7
index c3210320c..29f6cf6cb 100644
--- a/man7/pipe.7
+++ b/man7/pipe.7
@@ -246,6 +246,8 @@ limits; see BUGS.
.SS PIPE_BUF
POSIX.1 says that
.BR write (2)s
+and
+.BR writev (2)s
of less than
.B PIPE_BUF
bytes must be atomic: the output data is written to the pipe as a
--
2.32.0
next prev parent reply other threads:[~2021-07-28 20:20 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 20:19 [PATCH 00/32] Patches from others Alejandro Colomar
2021-07-28 20:19 ` [PATCH 01/32] readv2: Note preadv2(..., RWF_NOWAIT) bug in BUGS section Alejandro Colomar
2021-08-08 2:29 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 02/32] readv.2: Minor tweaks to Will's patch Alejandro Colomar
2021-08-08 2:30 ` Michael Kerrisk (man-pages)
2021-08-08 2:42 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 03/32] vdso.7: Remove outdated limitation for powerpc Alejandro Colomar
2021-08-08 0:17 ` Michael Kerrisk (man-pages)
2021-08-08 0:21 ` Alejandro Colomar (man-pages)
2021-07-28 20:19 ` [PATCH 04/32] vdso.7: Add y2038 compliant gettime for ppc/32 Alejandro Colomar
2021-08-08 0:48 ` Michael Kerrisk (man-pages)
2021-08-08 1:01 ` Alejandro Colomar (man-pages)
2021-08-08 2:25 ` Michael Kerrisk (man-pages)
2021-08-08 2:22 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 05/32] posixoptions.7: Fix legacy functions list (s/getcwd/getwd/) Alejandro Colomar
2021-08-08 0:55 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 06/32] man2/fallocate.2: tfix documentation of shared blocks Alejandro Colomar
2021-08-08 0:54 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 07/32] printf.3: wfix Alejandro Colomar
2021-08-07 21:34 ` Michael Kerrisk (man-pages)
2021-08-07 22:20 ` Alejandro Colomar (man-pages)
2021-08-07 22:32 ` Alejandro Colomar (man-pages)
2021-08-07 23:10 ` Michael Kerrisk (man-pages)
2021-08-11 20:55 ` Sergey Petrakov
2021-08-11 22:33 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 08/32] Various pages: Consistently use '*argv[]' Alejandro Colomar
2021-08-07 21:35 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 09/32] path_resolution.7: tfix Alejandro Colomar
2021-08-07 21:37 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 10/32] futex.2: Document FUTEX_LOCK_PI2 Alejandro Colomar
2021-07-29 10:18 ` Alejandro Colomar (man-pages)
2021-08-07 21:38 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 11/32] futex.2: Minor tweaks to Kurt's patch Alejandro Colomar
2021-07-29 10:24 ` Alejandro Colomar (man-pages)
2021-08-07 21:38 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 12/32] capabilities.7: tfix Alejandro Colomar
2021-08-07 21:39 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 13/32] user_namespaces.7: fix a ref Alejandro Colomar
2021-08-07 21:40 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 14/32] capabilities.7, user_namespaces.7: describe CAP_SETFCAP Alejandro Colomar
2021-08-08 2:54 ` Michael Kerrisk (man-pages)
2021-08-08 9:09 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 15/32] capabilities.7: Minor tweaks to Kir's patch Alejandro Colomar
2021-07-29 11:16 ` Alejandro Colomar (man-pages)
2021-08-08 3:03 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 16/32] seccomp_unotify.2: Add doc for SECCOMP_ADDFD_FLAG_SEND Alejandro Colomar
2021-08-08 1:01 ` Michael Kerrisk (man-pages)
2021-08-09 9:42 ` Rodrigo Campos
2021-07-28 20:19 ` [PATCH 17/32] seccomp_unotify.2: Minor tweaks to Rodrigo's patch Alejandro Colomar
2021-07-29 11:15 ` Alejandro Colomar (man-pages)
2021-08-08 1:13 ` Michael Kerrisk (man-pages)
2021-08-08 1:22 ` Alejandro Colomar (man-pages)
2021-07-28 20:19 ` [PATCH 18/32] recv.2: tfix Alejandro Colomar
2021-08-07 21:43 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 19/32] ascii.7: add vertical rule to separate the two columns Alejandro Colomar
2021-08-07 22:46 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 20/32] wait.2: Add ESRCH for when pid == INT_MIN Alejandro Colomar
2021-08-07 23:05 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 21/32] seccomp_unotify.2: tfix Alejandro Colomar
2021-08-08 1:13 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 22/32] proc.5: tfix Alejandro Colomar
2021-08-07 22:55 ` Michael Kerrisk (man-pages)
2021-07-28 20:19 ` [PATCH 23/32] scripts/bash_aliases: tfix Alejandro Colomar
2021-08-07 22:47 ` Michael Kerrisk (man-pages)
2021-07-28 20:20 ` [PATCH 24/32] namespaces.7: fix confusion caused by text reorganization Alejandro Colomar
2021-08-07 23:48 ` Michael Kerrisk (man-pages)
2021-07-28 20:20 ` Alejandro Colomar [this message]
2021-08-08 9:30 ` [PATCH 25/32] pipe.7: also mention writev(2) in atomicity sexion Michael Kerrisk (man-pages)
2021-07-28 20:20 ` [PATCH 26/32] tkill.2: tfix Alejandro Colomar
2021-08-07 22:48 ` Michael Kerrisk (man-pages)
2021-07-28 20:20 ` [PATCH 27/32] strstr.3: Add special case for empty needle Alejandro Colomar
2021-08-07 23:53 ` Michael Kerrisk (man-pages)
2021-07-28 20:20 ` [PATCH 28/32] sigaction.2: Document SA_EXPOSE_TAGBITS and the flag support detection protocol Alejandro Colomar
2021-08-08 21:32 ` Michael Kerrisk (man-pages)
2021-07-28 20:20 ` [PATCH 29/32] sigaction.2: Apply minor tweaks to Peter's patch Alejandro Colomar
2021-07-29 11:14 ` Alejandro Colomar (man-pages)
2021-08-08 21:32 ` Michael Kerrisk (man-pages)
2021-07-28 20:20 ` [PATCH 30/32] strlen.3, wcslen.3: Add recommendations for safer variants Alejandro Colomar
2021-08-07 23:45 ` Michael Kerrisk (man-pages)
2021-08-08 0:04 ` Alejandro Colomar (man-pages)
2021-08-08 0:16 ` Alejandro Colomar (man-pages)
2021-08-08 1:20 ` Michael Kerrisk (man-pages)
2021-08-08 1:24 ` Alejandro Colomar (man-pages)
2021-08-08 2:18 ` Michael Kerrisk (man-pages)
2021-08-08 19:44 ` Jonny Grant
2021-07-28 20:20 ` [PATCH 31/32] time.2: wfix regarding year-2038 Alejandro Colomar
2021-07-29 10:45 ` G. Branden Robinson
2021-07-30 1:25 ` Viet Than
2021-08-07 23:59 ` Michael Kerrisk (man-pages)
2021-07-28 20:20 ` [PATCH 32/32] execve.2: Fix absolute/relative pathname Alejandro Colomar
2021-08-08 2:02 ` Michael Kerrisk (man-pages)
2021-08-08 21:34 ` [PATCH 00/32] Patches from others Michael Kerrisk (man-pages)
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