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cuse.c
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cuse_defs.h
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cuse_ioctl.h
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Editing: cuse_ioctl.h
/* $FreeBSD$ */ /*- * Copyright (c) 2014 Hans Petter Selasky. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _CUSE_IOCTL_H_ #define _CUSE_IOCTL_H_ #include <sys/ioccom.h> #include <sys/types.h> #define CUSE_BUFFER_MAX PAGE_SIZE #define CUSE_DEVICES_MAX 64 /* units */ #define CUSE_BUF_MIN_PTR 0x10000UL #define CUSE_BUF_MAX_PTR 0x20000UL #define CUSE_ALLOC_UNIT_MAX 128 /* units */ /* All memory allocations must be less than the following limit */ #define CUSE_ALLOC_PAGES_MAX (((16UL * 1024UL * 1024UL) + PAGE_SIZE - 1) / PAGE_SIZE) struct cuse_dev; struct cuse_data_chunk { uintptr_t local_ptr; uintptr_t peer_ptr; unsigned long length; }; struct cuse_alloc_info { unsigned long page_count; unsigned long alloc_nr; }; struct cuse_command { struct cuse_dev *dev; unsigned long fflags; uintptr_t per_file_handle; uintptr_t data_pointer; unsigned long argument; unsigned long command; /* see CUSE_CMD_XXX */ }; struct cuse_create_dev { struct cuse_dev *dev; uid_t user_id; gid_t group_id; int permissions; char devname[80]; /* /dev/xxxxx */ }; /* Definition of internal IOCTLs for /dev/cuse */ #define CUSE_IOCTL_GET_COMMAND _IOR('C', 0, struct cuse_command) #define CUSE_IOCTL_WRITE_DATA _IOW('C', 1, struct cuse_data_chunk) #define CUSE_IOCTL_READ_DATA _IOW('C', 2, struct cuse_data_chunk) #define CUSE_IOCTL_SYNC_COMMAND _IOW('C', 3, int) #define CUSE_IOCTL_GET_SIG _IOR('C', 4, int) #define CUSE_IOCTL_ALLOC_MEMORY _IOW('C', 5, struct cuse_alloc_info) #define CUSE_IOCTL_FREE_MEMORY _IOW('C', 6, struct cuse_alloc_info) #define CUSE_IOCTL_SET_PFH _IOW('C', 7, uintptr_t) #define CUSE_IOCTL_CREATE_DEV _IOW('C', 8, struct cuse_create_dev) #define CUSE_IOCTL_DESTROY_DEV _IOW('C', 9, struct cuse_dev *) #define CUSE_IOCTL_ALLOC_UNIT _IOR('C',10, int) #define CUSE_IOCTL_FREE_UNIT _IOW('C',11, int) #define CUSE_IOCTL_SELWAKEUP _IOW('C',12, int) #define CUSE_IOCTL_ALLOC_UNIT_BY_ID _IOWR('C',13, int) #define CUSE_IOCTL_FREE_UNIT_BY_ID _IOWR('C',14, int) #endif /* _CUSE_IOCTL_H_ */
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