Re: [Xen-devel] [PATCH 4/4] tools/libxl: Initialise the fd of the unused half of a datacopier

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 17/07/15 17:55, Wei Liu wrote:
> On Fri, Jul 17, 2015 at 05:51:18PM +0100, Andrew Cooper wrote:
>> This bug causes a spurious failure if stdin happens to be an
>> appropriately readable/writeable pipe which receives a POLLHUP
>>
>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>> CC: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
>> CC: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
>> CC: Wei Liu <wei.liu2@xxxxxxxxxx>
>> ---
>>  tools/libxl/libxl_stream_read.c  |    1 +
>>  tools/libxl/libxl_stream_write.c |    1 +
>>  2 files changed, 2 insertions(+)
>>
>> diff --git a/tools/libxl/libxl_stream_read.c 
>> b/tools/libxl/libxl_stream_read.c
>> index 3e1cd2a..32a3551 100644
>> --- a/tools/libxl/libxl_stream_read.c
>> +++ b/tools/libxl/libxl_stream_read.c
>> @@ -611,6 +611,7 @@ static void write_emulator_blob(libxl__egc *egc,
>>      dc->writewhat  = "qemu save file";
>>      dc->copywhat   = "restore v2 stream";
>>      dc->writefd    = writefd;
>> +    dc->readfd     = -1;
>>      dc->maxsz      = -1;
>>      dc->callback   = write_emulator_done;
>>  
>> diff --git a/tools/libxl/libxl_stream_write.c 
>> b/tools/libxl/libxl_stream_write.c
>> index 94f681b..47f71c0 100644
>> --- a/tools/libxl/libxl_stream_write.c
>> +++ b/tools/libxl/libxl_stream_write.c
>> @@ -389,6 +389,7 @@ static void write_emulator_record(libxl__egc *egc,
>>      dc->readwhat      = "qemu save file";
>>      dc->copywhat      = "save v2 stream";
>>      dc->readfd        = readfd;
>> +    dc->readfd        = -1;
> writefd

Oops :s yes.

~Andrew

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