Date: Tue, 01 Aug 2006 09:13:32 +0100 From: Brian Candler <B.Candler@pobox.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: docs/101145: msgsnd(3) manpage doesn't define msgsz clearly Message-ID: <E1G7pNc-000Mcu-FY@mappit.local.linnet.org> Resent-Message-ID: <200608010820.k718K79n075070@freefall.freebsd.org>
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>Number: 101145
>Category: docs
>Synopsis: msgsnd(3) manpage doesn't define msgsz clearly
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-doc
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: doc-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Aug 01 08:20:06 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Brian Candler
>Release: FreeBSD 5.4-RELEASE i386 and CURRENT
>Organization:
>Environment:
>Description:
msgsnd(3) page doesn't make it clear whether the 'msgsz' argument refers to
the length of the entire *msgp structure (mtype + mtext) or just to the
length of the data in mtext.
>How-To-Repeat:
man 3 msgsnd
>Fix:
The Linux manpage is clearer: it says
The mtext field is an array (or other structure) whose size is speci-
fied by msgsz, a non-negative integer value. Messages of zero length
(i.e., no mtext field) are permitted.
But perhaps a simple fix for us is:
mtype is an integer greater than 0 that can be used for selecting mes-
sages (see msgrcv(3)); mtext is an array of msgsz bytes, which may be
between 0 and the system limit (MSGMAX).
>Release-Note:
>Audit-Trail:
>Unformatted:
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