freebsd-dev/sys/xen/privcmd.h
Roger Pau Monne a765078790 xen/privcmd: implement the restrict ioctl
Use an interface compatible with the Linux one so that the user-space
libraries already using the Linux interface can be used without much
modifications.

This allows an open privcmd instance to limit against which domains it
can act upon.

Sponsored by:	Citrix Systems R&D
2021-01-11 16:33:27 +01:00

89 lines
3.1 KiB
C

/******************************************************************************
* privcmd.h
*
* Interface to /proc/xen/privcmd.
*
* Copyright (c) 2003-2005, K A Fraser
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation; or, when distributed
* separately from the Linux kernel or incorporated into other
* software packages, subject to the following license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this source file (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* $FreeBSD$
*/
#ifndef __XEN_PRIVCMD_H__
#define __XEN_PRIVCMD_H__
struct ioctl_privcmd_hypercall
{
unsigned long op; /* hypercall number */
unsigned long arg[5]; /* arguments */
long retval; /* return value */
};
struct ioctl_privcmd_mmapbatch {
int num; /* number of pages to populate */
domid_t dom; /* target domain */
unsigned long addr; /* virtual address */
const xen_pfn_t *arr; /* array of mfns */
int *err; /* array of error codes */
};
struct ioctl_privcmd_mmapresource {
domid_t dom; /* target domain */
unsigned int type; /* type of resource to map */
unsigned int id; /* type-specific resource identifier */
unsigned int idx; /* the index of the initial frame to be mapped */
unsigned long num; /* number of frames of the resource to be mapped */
unsigned long addr; /* physical address to map into */
/*
* Note: issuing an ioctl with num = addr = 0 will return the size of
* the resource.
*/
};
struct privcmd_dmop_buf {
void *uptr; /* pointer to memory (in calling process) */
size_t size; /* size of the buffer */
};
struct ioctl_privcmd_dmop {
domid_t dom; /* target domain */
unsigned int num; /* num of buffers */
const struct privcmd_dmop_buf *ubufs; /* array of buffers */
};
#define IOCTL_PRIVCMD_HYPERCALL \
_IOWR('E', 0, struct ioctl_privcmd_hypercall)
#define IOCTL_PRIVCMD_MMAPBATCH \
_IOWR('E', 1, struct ioctl_privcmd_mmapbatch)
#define IOCTL_PRIVCMD_MMAP_RESOURCE \
_IOW('E', 2, struct ioctl_privcmd_mmapresource)
#define IOCTL_PRIVCMD_DM_OP \
_IOW('E', 3, struct ioctl_privcmd_dmop)
#define IOCTL_PRIVCMD_RESTRICT \
_IOW('E', 4, domid_t)
#endif /* !__XEN_PRIVCMD_H__ */