From: Eric Blake <eblake@redhat.com>
To: Michael Roth <mdroth@linux.vnet.ibm.com>, qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org,
"Marc-André Lureau" <marcandre.lureau@redhat.com>
Subject: Re: [Qemu-devel] [PULL for-2.5 3/6] qga: flush explicitly when needed
Date: Wed, 25 Nov 2015 16:45:44 -0700 [thread overview]
Message-ID: <56564828.2060503@redhat.com> (raw)
In-Reply-To: <1448491660-11890-4-git-send-email-mdroth@linux.vnet.ibm.com>
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On 11/25/2015 03:47 PM, Michael Roth wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
> According to the specification:
> http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html
>
> "the application shall ensure that output is not directly followed by
> input without an intervening call to fflush() or to a file positioning
> function (fseek(), fsetpos(), or rewind()), and input is not directly
> followed by output without an intervening call to a file positioning
> function, unless the input operation encounters end-of-file."
>
> Without this change, an fwrite() followed by an fread() may lose the
> previously written content, as shown in the following test.
>
> Fixes:
> https://bugzilla.redhat.com/show_bug.cgi?id=1210246
>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> * don't confuse {write,read}() with f{write,read}() in
> commit msg (Laszlo)
> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
> ---
Looks like you lost Marc-Andre's S-o-b :(
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2015-11-25 23:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-25 22:47 [Qemu-devel] [PULL for-2.5 0/6] qemu-ga patch queue for 2.5 Michael Roth
2015-11-25 22:47 ` [Qemu-devel] [PULL for-2.5 1/6] makefile: fix qemu-ga make install for --disable-tools Michael Roth
2015-11-25 22:47 ` [Qemu-devel] [PULL for-2.5 2/6] qga: gspawn() console helper to Windows guest agent msi build Michael Roth
2015-11-25 22:47 ` [Qemu-devel] [PULL for-2.5 3/6] qga: flush explicitly when needed Michael Roth
2015-11-25 23:45 ` Eric Blake [this message]
2015-11-25 22:47 ` [Qemu-devel] [PULL for-2.5 4/6] tests: add file-write-read test Michael Roth
2015-11-25 22:47 ` [Qemu-devel] [PULL for-2.5 5/6] qga: Better mapping of SEEK_* in guest-file-seek Michael Roth
2015-11-25 22:47 ` [Qemu-devel] [PULL for-2.5 6/6] qga: added another non-interactive gspawn() helper file Michael Roth
2015-11-25 23:47 ` [Qemu-devel] [PULL for-2.5 0/6] qemu-ga patch queue for 2.5 Eric Blake
2015-11-26 0:02 ` Michael Roth
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