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1c5de193 JF |
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> | |
744f9f10 | 37 | #include <linux/compiler.h> |
4d9310e3 | 38 | #include <xen/interface/xen.h> |
1c5de193 | 39 | |
1c5de193 JF |
40 | struct privcmd_hypercall { |
41 | __u64 op; | |
42 | __u64 arg[5]; | |
43 | }; | |
44 | ||
45 | struct privcmd_mmap_entry { | |
46 | __u64 va; | |
a13d7201 JG |
47 | /* |
48 | * This should be a GFN. It's not possible to change the name because | |
49 | * it's exposed to the user-space. | |
50 | */ | |
1c5de193 JF |
51 | __u64 mfn; |
52 | __u64 npages; | |
53 | }; | |
54 | ||
55 | struct privcmd_mmap { | |
56 | int num; | |
57 | domid_t dom; /* target domain */ | |
58 | struct privcmd_mmap_entry __user *entry; | |
59 | }; | |
60 | ||
61 | struct privcmd_mmapbatch { | |
62 | int num; /* number of pages to populate */ | |
63 | domid_t dom; /* target domain */ | |
64 | __u64 addr; /* virtual address */ | |
ceb90fa0 ALC |
65 | xen_pfn_t __user *arr; /* array of mfns - or'd with |
66 | PRIVCMD_MMAPBATCH_*_ERROR on err */ | |
67 | }; | |
68 | ||
69 | #define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U | |
70 | #define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U | |
71 | ||
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 */ | |
1c5de193 JF |
78 | }; |
79 | ||
80 | /* | |
81 | * @cmd: IOCTL_PRIVCMD_HYPERCALL | |
82 | * @arg: &privcmd_hypercall_t | |
83 | * Return: Value returned from execution of the specified hypercall. | |
ceb90fa0 ALC |
84 | * |
85 | * @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2 | |
86 | * @arg: &struct privcmd_mmapbatch_v2 | |
87 | * Return: 0 on success (i.e., arg->err contains valid error codes for | |
88 | * each frame). On an error other than a failed frame remap, -1 is | |
89 | * returned and errno is set to EINVAL, EFAULT etc. As an exception, | |
90 | * if the operation was otherwise successful but any frame failed with | |
91 | * -ENOENT, then -1 is returned and errno is set to ENOENT. | |
1c5de193 JF |
92 | */ |
93 | #define IOCTL_PRIVCMD_HYPERCALL \ | |
94 | _IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall)) | |
95 | #define IOCTL_PRIVCMD_MMAP \ | |
96 | _IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap)) | |
97 | #define IOCTL_PRIVCMD_MMAPBATCH \ | |
98 | _IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch)) | |
ceb90fa0 ALC |
99 | #define IOCTL_PRIVCMD_MMAPBATCH_V2 \ |
100 | _IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2)) | |
1c5de193 JF |
101 | |
102 | #endif /* __LINUX_PUBLIC_PRIVCMD_H__ */ |