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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 | + |
| 40 | +struct privcmd_hypercall { |
| 41 | + __u64 op; |
| 42 | + __u64 arg[5]; |
| 43 | +}; |
| 44 | + |
| 45 | +struct privcmd_mmap_entry { |
| 46 | + __u64 va; |
| 47 | + __u64 mfn; |
| 48 | + __u64 npages; |
| 49 | +}; |
| 50 | + |
| 51 | +struct privcmd_mmap { |
| 52 | + int num; |
| 53 | + domid_t dom; /* target domain */ |
| 54 | + struct privcmd_mmap_entry __user *entry; |
| 55 | +}; |
| 56 | + |
| 57 | +struct privcmd_mmapbatch { |
| 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 | + |
| 68 | +struct privcmd_mmapbatch_v2 { |
| 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__ */ |