JezK
Edit File: privcmd.h
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */ /****************************************************************************** * 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 <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 *entry; }; struct privcmd_mmapbatch { int num; /* number of pages to populate */ domid_t dom; /* target domain */ __u64 addr; /* virtual address */ xen_pfn_t *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 *arr; /* array of mfns */ int *err; /* array of error codes */ }; struct privcmd_dm_op_buf { void *uptr; size_t size; }; struct privcmd_dm_op { domid_t dom; __u16 num; const struct privcmd_dm_op_buf *ubufs; }; struct privcmd_mmap_resource { domid_t dom; __u32 type; __u32 id; __u32 idx; __u64 num; __u64 addr; }; /* * @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)) #define IOCTL_PRIVCMD_DM_OP \ _IOC(_IOC_NONE, 'P', 5, sizeof(struct privcmd_dm_op)) #define IOCTL_PRIVCMD_RESTRICT \ _IOC(_IOC_NONE, 'P', 6, sizeof(domid_t)) #define IOCTL_PRIVCMD_MMAP_RESOURCE \ _IOC(_IOC_NONE, 'P', 7, sizeof(struct privcmd_mmap_resource)) #endif /* __LINUX_PUBLIC_PRIVCMD_H__ */