[libvirt] [Qemu-devel] [PATCH v2 4/4] block: Convert open calls to qemu_open

[Corey Bryant]

On 06/13/2012 06:26 AM, Kevin Wolf wrote:
> Am 08.06.2012 17:42, schrieb Corey Bryant:
>> This patch converts all block layer open calls to qemu_open.  This
>> enables all block layer open paths to dup(X) a pre-opened file
>> descriptor if the filename is of the format /dev/fd/X.  This is
>> useful if QEMU is restricted from opening certain files.
>>
>> Note that this adds the O_CLOEXEC flag to the changed open paths
>> when the O_CLOEXEC macro is defined.
>>
>> v2:
>>   -Convert calls to qemu_open instead of file_open (kwolf at redhat.com)
>>   -Mention introduction of O_CLOEXEC (kwolf at redhat.com)
>>
>> Signed-off-by: Corey Bryant <coreyb at linux.vnet.ibm.com>
>
>> @@ -950,7 +950,7 @@ static int floppy_probe_device(const char *filename)
>>       if (strstart(filename, "/dev/fd", NULL))
>>           prio = 50;
>
> Good to have this context here. I think this has to be removed in
> another patch or all our file descriptors will become host_floppy...
>

Good catch, thanks.  I just sent a patch to fix this.

>>
>> -    fd = open(filename, O_RDONLY | O_NONBLOCK);
>> +    fd = qemu_open(filename, O_RDONLY | O_NONBLOCK);
>>       if (fd < 0) {
>>           goto out;
>>       }
>
> Kevin
>

-- 
Regards,
Corey