diff options
Diffstat (limited to 'sys/fs/cuse/cuse_ioctl.h')
| -rw-r--r-- | sys/fs/cuse/cuse_ioctl.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/sys/fs/cuse/cuse_ioctl.h b/sys/fs/cuse/cuse_ioctl.h new file mode 100644 index 000000000000..322ff28a4131 --- /dev/null +++ b/sys/fs/cuse/cuse_ioctl.h @@ -0,0 +1,89 @@ +/* $FreeBSD$ */ +/*- + * 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_ */ |