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On Sun, Oct 07, 2007 at 04:56:20PM +0200, Klaus Heinz wrote:
> Hi,
>=20
> qemu does the following in vl.c:
>=20
>   fd =3D open("/dev/tap", O_RDWR);
>   ...
>   fstat(fd, &s);
>   ...
>   dev =3D devname(s.st_rdev, S_IFCHR);
>=20
> This fails on NetBSD 3 because fstat() returns -1 and most (all?)
> members of struct stat are set to 0.
>=20
> I have two questions:
>=20
> - How can I get the name of the cloned interface (tap1, tap2, ...)?

ioctl(TAPGIFNAME)

> - Can anyone please check whether there are any other undocumented
>   errno values for fstat? If fstat() returns -1 errno is set to 45
>   (EOPNOTSUPP) which is not listed on the man page for fstat().

The handler for /dev/tap uses fbadop_stat, which returns EOPNOTSUPP.

--=20
Quentin Garnier - cube@cubidou.net - cube@NetBSD.org
"See the look on my face from staying too long in one place
[...] every time the morning breaks I know I'm closer to falling"
KT Tunstall, Saving My Face, Drastic Fantastic, 2007.

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