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TOMOYO Linux Cross Reference
Linux/include/uapi/xen/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 
 40 struct privcmd_hypercall {
 41         __u64 op;
 42         __u64 arg[5];
 43 };
 44 
 45 struct 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 
 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 */
 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 */
 78 };
 79 
 80 struct privcmd_dm_op_buf {
 81         void __user *uptr;
 82         size_t size;
 83 };
 84 
 85 struct privcmd_dm_op {
 86         domid_t dom;
 87         __u16 num;
 88         const struct privcmd_dm_op_buf __user *ubufs;
 89 };
 90 
 91 /*
 92  * @cmd: IOCTL_PRIVCMD_HYPERCALL
 93  * @arg: &privcmd_hypercall_t
 94  * Return: Value returned from execution of the specified hypercall.
 95  *
 96  * @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2
 97  * @arg: &struct privcmd_mmapbatch_v2
 98  * Return: 0 on success (i.e., arg->err contains valid error codes for
 99  * each frame).  On an error other than a failed frame remap, -1 is
100  * returned and errno is set to EINVAL, EFAULT etc.  As an exception,
101  * if the operation was otherwise successful but any frame failed with
102  * -ENOENT, then -1 is returned and errno is set to ENOENT.
103  */
104 #define IOCTL_PRIVCMD_HYPERCALL                                 \
105         _IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall))
106 #define IOCTL_PRIVCMD_MMAP                                      \
107         _IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap))
108 #define IOCTL_PRIVCMD_MMAPBATCH                                 \
109         _IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch))
110 #define IOCTL_PRIVCMD_MMAPBATCH_V2                              \
111         _IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))
112 #define IOCTL_PRIVCMD_DM_OP                                     \
113         _IOC(_IOC_NONE, 'P', 5, sizeof(struct privcmd_dm_op))
114 #define IOCTL_PRIVCMD_RESTRICT                                  \
115         _IOC(_IOC_NONE, 'P', 6, sizeof(domid_t))
116 
117 #endif /* __LINUX_PUBLIC_PRIVCMD_H__ */
118 

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