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 40struct privcmd_hypercall { 41 __u64 op; 42 __u64 arg[5]; 43}; 44 45struct privcmd_mmap_entry { 46 __u64 va; 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 */ 51 __u64 mfn; 52 __u64 npages; 53}; 54 55struct privcmd_mmap { 56 int num; 57 domid_t dom; /* target domain */ 58 struct privcmd_mmap_entry __user *entry; 59}; 60 61struct 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 */ 67}; 68 69#define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U 70#define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U 71 72struct 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 */ 78}; 79 80/* 81 * @cmd: IOCTL_PRIVCMD_HYPERCALL 82 * @arg: &privcmd_hypercall_t 83 * Return: Value returned from execution of the specified hypercall. 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. 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)) 99#define IOCTL_PRIVCMD_MMAPBATCH_V2 \ 100 _IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2)) 101 102#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */ 103