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From: Christoph Hellwig <hch@infradead.org>
To: Bill Kendall <wkendall@sgi.com>
Cc: xfs@oss.sgi.com, aelder@sgi.com
Subject: Re: [PATCH v2 6/7] xfsdump: convert to the POSIX signal API
Date: Fri, 12 Aug 2011 16:45:54 -0400	[thread overview]
Message-ID: <20110812204554.GA30615@infradead.org> (raw)
In-Reply-To: <4E457BEE.7060704@sgi.com>

On Fri, Aug 12, 2011 at 02:15:58PM -0500, Bill Kendall wrote:
> >Is there any requirement that the fields
> >other than sa_flags and sa_handler should
> >be zeroed before use?
> 
> The sa_sigaction field will only be used if sa_flags
> has SA_SIGINFO set, and the sa_restored field is obsolete
> and not specified by POSIX. Better to explicitly initialize
> everything though, so I'll change that.

sigaction actuall is a rare case where this is harmful.  To quote
the manpage:

	On some architectures a union is involved:  do not assign to both
	sa_handler and sa_sigaction.

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  reply	other threads:[~2011-08-12 20:45 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-04 22:30 [PATCH v2 0/7] xfsdump: convert to using the POSIX signal API Bill Kendall
2011-08-04 22:30 ` [PATCH v2 1/7] xfsdump: remove conditional OPENMASKED code Bill Kendall
2011-08-09 22:40   ` Alex Elder
2011-08-04 22:30 ` [PATCH v2 2/7] xfsdump: process EPIPE instead of catching SIGPIPE Bill Kendall
2011-08-09 22:40   ` Alex Elder
2011-08-04 22:30 ` [PATCH v2 3/7] xfsdump: remove SIGCHLD handling Bill Kendall
2011-08-10 21:47   ` Alex Elder
2011-08-04 22:30 ` [PATCH v2 4/7] xfsdump: rework dialog timeout and EINTR reliance Bill Kendall
2011-08-10 21:47   ` Alex Elder
2011-08-04 22:30 ` [PATCH v2 5/7] xfsdump: rework dialog to use main signal handler Bill Kendall
2011-08-10 21:47   ` Alex Elder
2011-08-04 22:30 ` [PATCH v2 6/7] xfsdump: convert to the POSIX signal API Bill Kendall
2011-08-10 21:48   ` Alex Elder
2011-08-12 19:15     ` Bill Kendall
2011-08-12 20:45       ` Christoph Hellwig [this message]
2011-08-15 13:10         ` Bill Kendall
2011-08-04 22:30 ` [PATCH v2 7/7] xfsdump: refactor inventory session creation Bill Kendall
2011-08-10 21:48   ` Alex Elder

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