Re: [Qemu-devel] Make 9pfs buildable for Windows

[Michael Fritscher]

> On 29/09/2017 13:13, Michael Fritscher wrote:
>> "
>> The biggest issue seems to be the *at stuff. I'll
>> try to workaround this via getting the directories' path from the file
>> descriptor with the /proc (as it is already done in the 9pfs_utils) -
>> luckily,the mingw environment emulates the /proc. If this doesn't work
>> I've another idea (the file descriptors needs to be "registered" with
>> the
>> path (and saved in a sparse vector or map with the fd as key and the
>> path
>> as value). The "big" solution would be to write a 9p_local_windows.c
>> from
>> scratch, but I would like to avoid it.
>> "
>
> Yes, that's pretty much the only way to do it; it's not the easiest
> thing because you have to use NT kernel APIs (NtCreateFile) rather than
> e.g. CreateFile.  Likewise for NtQueryAttributesFile,
> NtQueryDirectoryObject, etc. NtOpenDirectoryObject. :(
>
> Paolo
>

Hi,

why do I need the NT* functions instead of the "normal" ones from
kernel32? And it was working even with the posix functions some time ago
(Which I'll port to current qemu atm)

>From the "host side", 9pfs does nothing special I think.

Best regards,
Michael Fritscher