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ioctl with payload

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Christopher Milan 2025-11-10 23:28:57 +00:00
commit a3a68f12e5
1 changed files with 3 additions and 2 deletions
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5
tinygrad/runtime/support/c.py
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@ -1,10 +1,11 @@
import ctypes, functools, sys
from typing import TYPE_CHECKING
def _do_ioctl(__idir, __base, __nr, __struct, __fd, **kwargs):
def _do_ioctl(__idir, __base, __nr, __struct, __fd, __payload=None, **kwargs):
import tinygrad.runtime.support.hcq as hcq, fcntl
ioctl = __fd.ioctl if isinstance(__fd, hcq.FileIOInterface) else functools.partial(fcntl.ioctl, __fd)
if (rc:=ioctl((__idir<<30)|(ctypes.sizeof(out:=__struct(**kwargs))<<16)|(__base<<8)|__nr, out)): raise RuntimeError(f"ioctl returned {rc}")
if (rc:=ioctl((__idir<<30)|(ctypes.sizeof(out:=(__payload or __struct(**kwargs)))<<16)|(__base<<8)|__nr, out)):
raise RuntimeError(f"ioctl returned {rc}")
return out
def _IO(base, nr): return functools.partial(_do_ioctl, 0, ord(base) if isinstance(base, str) else base, nr, None)