From: Christoph Hellwig <hch@infradead.org>
To: Chris Metcalf <cmetcalf@tilera.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
linasvepstas@gmail.com, GLIBC Devel <libc-alpha@sourceware.org>,
linux-kernel@vger.kernel.org, libc-ports@sourceware.org
Subject: Re: asm-generic/unistd.h and glibc use of NR_ipc
Date: Wed, 29 Sep 2010 01:16:31 -0400 [thread overview]
Message-ID: <20100929051631.GA8116@infradead.org> (raw)
In-Reply-To: <4CA1E809.5010103@tilera.com>
On Tue, Sep 28, 2010 at 09:05:13AM -0400, Chris Metcalf wrote:
> Another point where I'd appreciate guidance from libc-alpha is the sysctl()
> and ustat() APIs. The corresponding system calls are missing from
> <asm-generic/unistd.h>, since they are deprecated and their functionality
> is better provided by other means (/proc/sys, fstat). So I've simply had
> them return -1 with errno == ENOSYS. Is there any reason to think they
> merit more substantial work? One could imagine baking in some horrible
> mapping of "integer names" into path components for a sysctl()
> implementation and reading /proc/sys to provide results, or walking all of
> the mount points looking for a matching device number to pass a name to
> fstat(), but I'm not sure it's worth the bloat to the library.
fstat does not replace ustat. ustat is a statf-subsystem by dev_t and
is not replaced by anything. xfsprogs for example uses it to check if
a given dev_t is currently mounted. Please add it to the generic code.
next prev parent reply other threads:[~2010-09-29 5:16 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-27 23:26 asm-generic/unistd.h and glibc use of NR_ipc Linas Vepstas
2010-09-28 0:02 ` Mike Frysinger
2010-09-28 8:40 ` Arnd Bergmann
2010-09-28 13:05 ` Chris Metcalf
2010-09-28 15:52 ` Joseph S. Myers
2010-09-28 16:13 ` Arnd Bergmann
2010-09-28 16:41 ` Joseph S. Myers
2010-09-28 20:08 ` Arnd Bergmann
2010-09-28 16:50 ` Mike Frysinger
2010-09-28 16:42 ` Mike Frysinger
2010-09-28 16:52 ` Joseph S. Myers
2010-09-28 17:36 ` Linas Vepstas
2010-09-30 13:23 ` Chris Metcalf
2010-09-29 5:16 ` Christoph Hellwig [this message]
2010-09-29 11:55 ` Arnd Bergmann
2011-03-10 16:46 ` Linas Vepstas
2011-03-10 17:07 ` Chris Metcalf
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