1 /******************************************************************************
4 * Interface to /proc/xen/privcmd.
6 * Copyright (c) 2003-2005, K A Fraser
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation; or, when distributed
11 * separately from the Linux kernel or incorporated into other
12 * software packages, subject to the following license:
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this source file (the "Software"), to deal in the Software without
16 * restriction, including without limitation the rights to use, copy, modify,
17 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
18 * and to permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
33 #ifndef __LINUX_PUBLIC_PRIVCMD_H__
34 #define __LINUX_PUBLIC_PRIVCMD_H__
36 #include <linux/types.h>
37 #include <linux/compiler.h>
38 #include <xen/interface/xen.h>
40 struct privcmd_hypercall {
45 struct privcmd_mmap_entry {
48 * This should be a GFN. It's not possible to change the name because
49 * it's exposed to the user-space.
57 domid_t dom; /* target domain */
58 struct privcmd_mmap_entry __user *entry;
61 struct privcmd_mmapbatch {
62 int num; /* number of pages to populate */
63 domid_t dom; /* target domain */
64 __u64 addr; /* virtual address */
65 xen_pfn_t __user *arr; /* array of mfns - or'd with
66 PRIVCMD_MMAPBATCH_*_ERROR on err */
69 #define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U
70 #define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U
72 struct privcmd_mmapbatch_v2 {
73 unsigned int num; /* number of pages to populate */
74 domid_t dom; /* target domain */
75 __u64 addr; /* virtual address */
76 const xen_pfn_t __user *arr; /* array of mfns */
77 int __user *err; /* array of error codes */
80 struct privcmd_dm_op_buf {
85 struct privcmd_dm_op {
88 const struct privcmd_dm_op_buf __user *ubufs;
92 * @cmd: IOCTL_PRIVCMD_HYPERCALL
93 * @arg: &privcmd_hypercall_t
94 * Return: Value returned from execution of the specified hypercall.
96 * @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2
97 * @arg: &struct privcmd_mmapbatch_v2
98 * Return: 0 on success (i.e., arg->err contains valid error codes for
99 * each frame). On an error other than a failed frame remap, -1 is
100 * returned and errno is set to EINVAL, EFAULT etc. As an exception,
101 * if the operation was otherwise successful but any frame failed with
102 * -ENOENT, then -1 is returned and errno is set to ENOENT.
104 #define IOCTL_PRIVCMD_HYPERCALL \
105 _IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall))
106 #define IOCTL_PRIVCMD_MMAP \
107 _IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap))
108 #define IOCTL_PRIVCMD_MMAPBATCH \
109 _IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch))
110 #define IOCTL_PRIVCMD_MMAPBATCH_V2 \
111 _IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))
112 #define IOCTL_PRIVCMD_DM_OP \
113 _IOC(_IOC_NONE, 'P', 5, sizeof(struct privcmd_dm_op))
114 #define IOCTL_PRIVCMD_RESTRICT \
115 _IOC(_IOC_NONE, 'P', 6, sizeof(domid_t))
117 #endif /* __LINUX_PUBLIC_PRIVCMD_H__ */