[linux-2.6-block.git] / include / uapi / xen / privcmd.h

/******************************************************************************
 * privcmd.h
 *
 * Interface to /proc/xen/privcmd.
 *
 * Copyright (c) 2003-2005, K A Fraser
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation; or, when distributed
 * separately from the Linux kernel or incorporated into other
 * software packages, subject to the following license:
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this source file (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy, modify,
 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#ifndef __LINUX_PUBLIC_PRIVCMD_H__
#define __LINUX_PUBLIC_PRIVCMD_H__

#include <linux/types.h>
#include <linux/compiler.h>
#include <xen/interface/xen.h>

struct privcmd_hypercall {
	__u64 op;
	__u64 arg[5];
};

struct privcmd_mmap_entry {
	__u64 va;
	/*
	 * This should be a GFN. It's not possible to change the name because
	 * it's exposed to the user-space.
	 */
	__u64 mfn;
	__u64 npages;
};

struct privcmd_mmap {
	int num;
	domid_t dom; /* target domain */
	struct privcmd_mmap_entry __user *entry;
};

struct privcmd_mmapbatch {
	int num;     /* number of pages to populate */
	domid_t dom; /* target domain */
	__u64 addr;  /* virtual address */
	xen_pfn_t __user *arr; /* array of mfns - or'd with
				  PRIVCMD_MMAPBATCH_*_ERROR on err */
};

#define PRIVCMD_MMAPBATCH_MFN_ERROR     0xf0000000U
#define PRIVCMD_MMAPBATCH_PAGED_ERROR   0x80000000U

struct privcmd_mmapbatch_v2 {
	unsigned int num; /* number of pages to populate */
	domid_t dom;      /* target domain */
	__u64 addr;       /* virtual address */
	const xen_pfn_t __user *arr; /* array of mfns */
	int __user *err;  /* array of error codes */
};

/*
 * @cmd: IOCTL_PRIVCMD_HYPERCALL
 * @arg: &privcmd_hypercall_t
 * Return: Value returned from execution of the specified hypercall.
 *
 * @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2
 * @arg: &struct privcmd_mmapbatch_v2
 * Return: 0 on success (i.e., arg->err contains valid error codes for
 * each frame).  On an error other than a failed frame remap, -1 is
 * returned and errno is set to EINVAL, EFAULT etc.  As an exception,
 * if the operation was otherwise successful but any frame failed with
 * -ENOENT, then -1 is returned and errno is set to ENOENT.
 */
#define IOCTL_PRIVCMD_HYPERCALL					\
	_IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall))
#define IOCTL_PRIVCMD_MMAP					\
	_IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap))
#define IOCTL_PRIVCMD_MMAPBATCH					\
	_IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch))
#define IOCTL_PRIVCMD_MMAPBATCH_V2				\
	_IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))

#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */
Commit	Line	Data
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 \
ceb90fa0 ALC	100	_IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))
1c5de193 JF	101
1c5de193 JF	102	#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */