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privcmd.h
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1 /******************************************************************************
2  * privcmd.h
3  *
4  * Interface to /proc/xen/privcmd.
5  *
6  * Copyright (c) 2003-2005, K A Fraser
7  *
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:
13  *
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:
20  *
21  * The above copyright notice and this permission notice shall be included in
22  * all copies or substantial portions of the Software.
23  *
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
30  * IN THE SOFTWARE.
31  */
32 
33 #ifndef __LINUX_PUBLIC_PRIVCMD_H__
34 #define __LINUX_PUBLIC_PRIVCMD_H__
35 
36 #include <linux/types.h>
37 #include <linux/compiler.h>
38 #include <xen/interface/xen.h>
39 
42  __u64 arg[5];
43 };
44 
49 };
50 
51 struct privcmd_mmap {
52  int num;
53  domid_t dom; /* target domain */
55 };
56 
58  int num; /* number of pages to populate */
59  domid_t dom; /* target domain */
60  __u64 addr; /* virtual address */
61  xen_pfn_t __user *arr; /* array of mfns - or'd with
62  PRIVCMD_MMAPBATCH_*_ERROR on err */
63 };
64 
65 #define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U
66 #define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U
67 
69  unsigned int num; /* number of pages to populate */
70  domid_t dom; /* target domain */
71  __u64 addr; /* virtual address */
72  const xen_pfn_t __user *arr; /* array of mfns */
73  int __user *err; /* array of error codes */
74 };
75 
76 /*
77  * @cmd: IOCTL_PRIVCMD_HYPERCALL
78  * @arg: &privcmd_hypercall_t
79  * Return: Value returned from execution of the specified hypercall.
80  *
81  * @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2
82  * @arg: &struct privcmd_mmapbatch_v2
83  * Return: 0 on success (i.e., arg->err contains valid error codes for
84  * each frame). On an error other than a failed frame remap, -1 is
85  * returned and errno is set to EINVAL, EFAULT etc. As an exception,
86  * if the operation was otherwise successful but any frame failed with
87  * -ENOENT, then -1 is returned and errno is set to ENOENT.
88  */
89 #define IOCTL_PRIVCMD_HYPERCALL \
90  _IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall))
91 #define IOCTL_PRIVCMD_MMAP \
92  _IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap))
93 #define IOCTL_PRIVCMD_MMAPBATCH \
94  _IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch))
95 #define IOCTL_PRIVCMD_MMAPBATCH_V2 \
96  _IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))
97 
98 #endif /* __LINUX_PUBLIC_PRIVCMD_H__ */