50d7d967bb
The current definition for the MMAP_RESOURCE ioctl was wrong as it didn't copy back the result to the caller. Fix the definition and also remove the bogus attempt to copy the result in the implementation. Note such copy back is only needed when querying the size of a resource. Sponsored by: Citrix Systems R&D
89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/******************************************************************************
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* privcmd.h
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*
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* Interface to /proc/xen/privcmd.
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*
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* Copyright (c) 2003-2005, K A Fraser
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation; or, when distributed
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* separately from the Linux kernel or incorporated into other
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* software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* $FreeBSD$
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*/
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#ifndef __XEN_PRIVCMD_H__
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#define __XEN_PRIVCMD_H__
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struct ioctl_privcmd_hypercall
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{
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unsigned long op; /* hypercall number */
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unsigned long arg[5]; /* arguments */
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long retval; /* return value */
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};
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struct ioctl_privcmd_mmapbatch {
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int num; /* number of pages to populate */
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domid_t dom; /* target domain */
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unsigned long addr; /* virtual address */
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const xen_pfn_t *arr; /* array of mfns */
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int *err; /* array of error codes */
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};
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struct ioctl_privcmd_mmapresource {
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domid_t dom; /* target domain */
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unsigned int type; /* type of resource to map */
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unsigned int id; /* type-specific resource identifier */
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unsigned int idx; /* the index of the initial frame to be mapped */
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unsigned long num; /* number of frames of the resource to be mapped */
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unsigned long addr; /* physical address to map into */
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/*
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* Note: issuing an ioctl with num = addr = 0 will return the size of
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* the resource.
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*/
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};
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struct privcmd_dmop_buf {
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void *uptr; /* pointer to memory (in calling process) */
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size_t size; /* size of the buffer */
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};
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struct ioctl_privcmd_dmop {
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domid_t dom; /* target domain */
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unsigned int num; /* num of buffers */
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const struct privcmd_dmop_buf *ubufs; /* array of buffers */
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};
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#define IOCTL_PRIVCMD_HYPERCALL \
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_IOWR('E', 0, struct ioctl_privcmd_hypercall)
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#define IOCTL_PRIVCMD_MMAPBATCH \
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_IOWR('E', 1, struct ioctl_privcmd_mmapbatch)
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#define IOCTL_PRIVCMD_MMAP_RESOURCE \
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_IOWR('E', 2, struct ioctl_privcmd_mmapresource)
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#define IOCTL_PRIVCMD_DM_OP \
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_IOW('E', 3, struct ioctl_privcmd_dmop)
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#define IOCTL_PRIVCMD_RESTRICT \
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_IOW('E', 4, domid_t)
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#endif /* !__XEN_PRIVCMD_H__ */
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