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/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */
/******************************************************************************
* 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.
*/
#ifndef __LINUX_PUBLIC_PRIVCMD_H__
#define __LINUX_PUBLIC_PRIVCMD_H__
#include <linux/types.h>
#include <linux/compiler.h>
#include <xen/interface/xen.h>
struct privcmd_hypercall {
__u64 op;
__u64 arg[5];
};
struct privcmd_mmap_entry {
__u64 va;
/*
* This should be a GFN. It's not possible to change the name because
* it's exposed to the user-space.
*/
__u64 mfn;
__u64 npages;
};
struct privcmd_mmap {
int num;
domid_t dom; /* target domain */
struct privcmd_mmap_entry __user *entry;
};
struct privcmd_mmapbatch {
int num; /* number of pages to populate */
domid_t dom; /* target domain */
__u64 addr; /* virtual address */
xen_pfn_t __user *arr; /* array of mfns - or'd with
PRIVCMD_MMAPBATCH_*_ERROR on err */
};
#define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U
#define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U
struct privcmd_mmapbatch_v2 {
unsigned int num; /* number of pages to populate */
domid_t dom; /* target domain */
__u64 addr; /* virtual address */
const xen_pfn_t __user *arr; /* array of mfns */
int __user *err; /* array of error codes */
};
struct privcmd_dm_op_buf {
void __user *uptr;
size_t size;
};
struct privcmd_dm_op {
domid_t dom;
__u16 num;
const struct privcmd_dm_op_buf __user *ubufs;
};
struct privcmd_mmap_resource {
domid_t dom;
__u32 type;
__u32 id;
__u32 idx;
__u64 num;
__u64 addr;
};
/* For privcmd_irqfd::flags */
#define PRIVCMD_IRQFD_FLAG_DEASSIGN (1 << 0)
struct privcmd_irqfd {
__u64 dm_op;
__u32 size; /* Size of structure pointed by dm_op */
__u32 fd;
__u32 flags;
domid_t dom;
__u8 pad[2];
};
/*
* @cmd: IOCTL_PRIVCMD_HYPERCALL
* @arg: &privcmd_hypercall_t
* Return: Value returned from execution of the specified hypercall.
*
* @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2
* @arg: &struct privcmd_mmapbatch_v2
* Return: 0 on success (i.e., arg->err contains valid error codes for
* each frame). On an error other than a failed frame remap, -1 is
* returned and errno is set to EINVAL, EFAULT etc. As an exception,
* if the operation was otherwise successful but any frame failed with
* -ENOENT, then -1 is returned and errno is set to ENOENT.
*/
#define IOCTL_PRIVCMD_HYPERCALL \
_IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall))
#define IOCTL_PRIVCMD_MMAP \
_IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap))
#define IOCTL_PRIVCMD_MMAPBATCH \
_IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch))
#define IOCTL_PRIVCMD_MMAPBATCH_V2 \
_IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))
#define IOCTL_PRIVCMD_DM_OP \
_IOC(_IOC_NONE, 'P', 5, sizeof(struct privcmd_dm_op))
#define IOCTL_PRIVCMD_RESTRICT \
_IOC(_IOC_NONE, 'P', 6, sizeof(domid_t))
#define IOCTL_PRIVCMD_MMAP_RESOURCE \
_IOC(_IOC_NONE, 'P', 7, sizeof(struct privcmd_mmap_resource))
#define IOCTL_PRIVCMD_IRQFD \
_IOW('P', 8, struct privcmd_irqfd)
#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */
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