From: Rasmus Villemoes <rv@rasmusvillemoes.dk>
To: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: linux-man@vger.kernel.org, Rasmus Villemoes <rv@rasmusvillemoes.dk>
Subject: [PATCH] errno.3: add some comments on EAGAIN/EWOULDBLOCK and EDEADLK/EDEADLOCK
Date: Thu, 29 Aug 2019 12:06:21 +0200 [thread overview]
Message-ID: <20190829100621.11386-1-rv@rasmusvillemoes.dk> (raw)
Signed-off-by: Rasmus Villemoes <rv@rasmusvillemoes.dk>
---
man3/errno.3 | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/man3/errno.3 b/man3/errno.3
index 6cbbafed5..794be7c7b 100644
--- a/man3/errno.3
+++ b/man3/errno.3
@@ -94,7 +94,7 @@ must have distinct values, with the exception of
.B EAGAIN
and
.BR EWOULDBLOCK ,
-which may be the same.
+which may be the same. On Linux, these two always have the same value.
.PP
The error numbers that correspond to each symbolic name
vary across UNIX systems,
@@ -240,8 +240,9 @@ Connection reset (POSIX.1-2001).
Resource deadlock avoided (POSIX.1-2001).
.TP
.B EDEADLOCK
-Synonym for
+On most platforms, a synonym for
.BR EDEADLK .
+On some (e.g. Linux mips, powerpc, sparc), it is a separate error code "File locking deadlock error".
.TP
.B EDESTADDRREQ
Destination address required (POSIX.1-2001).
--
2.11.0
next reply other threads:[~2019-08-29 10:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 10:06 Rasmus Villemoes [this message]
2019-09-01 14:47 ` [PATCH] errno.3: add some comments on EAGAIN/EWOULDBLOCK and EDEADLK/EDEADLOCK Michael Kerrisk (man-pages)
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