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 __u64 mfn; 48 __u64 npages; 49}; 50 51struct privcmd_mmap { 52 int num; 53 domid_t dom; /* target domain */ 54 struct privcmd_mmap_entry __user *entry; 55}; 56 57struct 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 68struct 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__ */ 99