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/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */

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/******************************************************************************

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* privcmd.h

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* Interface to /proc/xen/privcmd.

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* This program is free software; you can redistribute it and/or

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* modify it under the terms of the GNU General Public License version 2

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* as published by the Free Software Foundation; or, when distributed

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* separately from the Linux kernel or incorporated into other

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* software packages, subject to the following license:

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* Permission is hereby granted, free of charge, to any person obtaining a copy

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* of this source file (the "Software"), to deal in the Software without

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* restriction, including without limitation the rights to use, copy, modify,

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* merge, publish, distribute, sublicense, and/or sell copies of the Software,

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* and to permit persons to whom the Software is furnished to do so, subject to

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* the following conditions:

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* The above copyright notice and this permission notice shall be included in

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* all copies or substantial portions of the Software.

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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

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* IN THE SOFTWARE.

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#ifndef __LINUX_PUBLIC_PRIVCMD_H__

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#define __LINUX_PUBLIC_PRIVCMD_H__

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#include <linux/types.h>

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#include <xen/interface/xen.h>

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struct privcmd_hypercall {

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__u64 op;

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__u64 arg[5];

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};

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struct privcmd_mmap_entry {

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__u64 va;

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* This should be a GFN. It's not possible to change the name because

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* it's exposed to the user-space.

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__u64 mfn;

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__u64 npages;

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};

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struct privcmd_mmap {

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int num;

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domid_t dom; /* target domain */

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struct privcmd_mmap_entry *entry;

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};

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struct privcmd_mmapbatch {

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int num; /* number of pages to populate */

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domid_t dom; /* target domain */

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__u64 addr; /* virtual address */

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xen_pfn_t *arr; /* array of mfns - or'd with

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PRIVCMD_MMAPBATCH_*_ERROR on err */

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};

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#define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U

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#define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U

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struct privcmd_mmapbatch_v2 {

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unsigned int num; /* number of pages to populate */

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domid_t dom; /* target domain */

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__u64 addr; /* virtual address */

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const xen_pfn_t *arr; /* array of mfns */

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int *err; /* array of error codes */

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};

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struct privcmd_dm_op_buf {

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void *uptr;

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size_t size;

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};

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struct privcmd_dm_op {

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domid_t dom;

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__u16 num;

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const struct privcmd_dm_op_buf *ubufs;

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};

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struct privcmd_mmap_resource {

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domid_t dom;

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__u32 type;

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__u32 id;

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__u32 idx;

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__u64 num;

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__u64 addr;

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};

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* @cmd: IOCTL_PRIVCMD_HYPERCALL

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* @arg: &privcmd_hypercall_t

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* Return: Value returned from execution of the specified hypercall.

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* @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2

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* @arg: &struct privcmd_mmapbatch_v2

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* Return: 0 on success (i.e., arg->err contains valid error codes for

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* each frame). On an error other than a failed frame remap, -1 is

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* returned and errno is set to EINVAL, EFAULT etc. As an exception,

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* if the operation was otherwise successful but any frame failed with

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* -ENOENT, then -1 is returned and errno is set to ENOENT.

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#define IOCTL_PRIVCMD_HYPERCALL \

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_IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall))

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#define IOCTL_PRIVCMD_MMAP \

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_IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap))

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#define IOCTL_PRIVCMD_MMAPBATCH \

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_IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch))

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#define IOCTL_PRIVCMD_MMAPBATCH_V2 \

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_IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))

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#define IOCTL_PRIVCMD_DM_OP \

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_IOC(_IOC_NONE, 'P', 5, sizeof(struct privcmd_dm_op))

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#define IOCTL_PRIVCMD_RESTRICT \

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_IOC(_IOC_NONE, 'P', 6, sizeof(domid_t))

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#define IOCTL_PRIVCMD_MMAP_RESOURCE \

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_IOC(_IOC_NONE, 'P', 7, sizeof(struct privcmd_mmap_resource))

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#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */

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