Date: Wed, 21 Jun 2000 20:30:11 -0400 From: "Vladimir N. Silyaev" <vsilyaev@mindspring.com> To: Coleman Kane <cokane@one.net> Cc: freebsd-hackers@freebsd.org Subject: Re: Linux ioctls Message-ID: <20000621203011.A499@jupiter.delta.ny.us>
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In the FreeBSD after 4.0 Release, have ability to registrate new
Linux -> FreeBSD ioctl's translators in the any part of the kernel code.
It's looks like this:
#define LINUX_IOCTL_SET(n,low,high) \
static linux_ioctl_function_t linux_ioctl_##n; \
static struct linux_ioctl_handler n##_handler = {linux_ioctl_##n, low, high }; \
SYSINIT(n##register, SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_register_handler,
&n##_handler); \
SYSUNINIT(n##unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_unregister_han
dler, &n##_handler);
I'm thinking that this stuff better to include in a some of the linux emulator
headers.
and after that:
low high
LINUX_IOCTL_SET(net, 0x8900, 0x89ff); /* handler declaration */
Linux ioctl's constants,
#define LINUX_SIOCSIFADDR 0x8916 /* set PA address */
#define LINUX_SIOCSIFFLAGS 0x8914 /* set flags */
#define LINUX_SIOCSIFBR 0x8941 /* Set bridging options */
Translator implementation,
static int
linux_ioctl_net(struct proc *p, struct linux_ioctl_args *args)
{
int error=ENOIOCTL;
DEB(printf(__FUNCTION__ ": cmd 0x%04lx arg %p\n", args->cmd, (void*)args->ar
g));
switch (args->cmd & 0xffff) {
case LINUX_SIOCSIFFLAGS:
args->cmd = SIOCSIFFLAGS;
error = ioctl(p, (struct ioctl_args *)args);
break;
case LINUX_SIOCSIFADDR:
args->cmd = SIOCSIFADDR;
error = ioctl(p, (struct ioctl_args *)args);
break;
case LINUX_SIOCSIFBR:
args->cmd = VMIO_SIOCSIFBR;
error = ioctl(p, (struct ioctl_args *)args);
break;
...
}
DEB(printf(__FUNCTION__ ": return %d\n", error));
return (error);
}
As far as I know such thing now are used only in linux emulator code and in
the FreeBSD drivers for vmware.
--
Vladimir
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