/* $NetBSD: fuse.h,v 1.8 2021/09/17 08:13:06 andvar Exp $ */
/*-
* Copyright (c) 2010 Emmanuel Dreyfus. 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _FUSE_H
#define _FUSE_H
#define FUSE_KERNEL_VERSION 7
#define FUSE_KERNEL_MINOR_VERSION 12
#define FUSE_ROOT_ID 1
#define FUSE_UNKNOWN_FH (uint64_t)0
#ifndef FUSE_BUFSIZE
#define FUSE_MIN_BUFSIZE ((size_t)0x21000)
#define FUSE_PREF_BUFSIZE ((size_t)(sysconf(_SC_PAGESIZE) + 0x1000))
#define FUSE_BUFSIZE MAX(FUSE_PREF_BUFSIZE /* CONSTCOND */, FUSE_MIN_BUFSIZE)
#endif /* FUSE_BUFSIZE */
/* From <linux/limits.h> */
#define LINUX_XATTR_NAME_MAX 255
#define LINUX_XATTR_SIZE_MAX 65536
#define LINUX_XATTR_LIST_MAX 65536
struct fuse_attr {
uint64_t ino;
uint64_t size;
uint64_t blocks;
uint64_t atime;
uint64_t mtime;
uint64_t ctime;
uint32_t atimensec;
uint32_t mtimensec;
uint32_t ctimensec;
uint32_t mode;
uint32_t nlink;
uint32_t uid;
uint32_t gid;
uint32_t rdev;
uint32_t blksize;
uint32_t padding;
};
struct fuse_kstatfs {
uint64_t blocks;
uint64_t bfree;
uint64_t bavail;
uint64_t files;
uint64_t ffree;
uint32_t bsize;
uint32_t namelen;
uint32_t frsize;
uint32_t padding;
uint32_t spare[6];
};
struct fuse_file_lock {
uint64_t start;
uint64_t end;
uint32_t type;
uint32_t pid;
};
/*
* Various flags
*/
#define FUSE_FATTR_MODE 0x0001
#define FUSE_FATTR_UID 0x0002
#define FUSE_FATTR_GID 0x0004
#define FUSE_FATTR_SIZE 0x0008
#define FUSE_FATTR_ATIME 0x0010
#define FUSE_FATTR_MTIME 0x0020
#define FUSE_FATTR_FH 0x0040
#define FUSE_FATTR_ATIME_NOW 0x0080
#define FUSE_FATTR_MTIME_NOW 0x0100
#define FUSE_FATTR_LOCKOWNER 0x0200
#define FUSE_FOPEN_DIRECT_IO 0x0001
#define FUSE_FOPEN_KEEP_CACHE 0x0002
#define FUSE_FOPEN_NONSEEKABLE 0x0004
#define FUSE_ASYNC_READ 0x0001
#define FUSE_POSIX_LOCKS 0x0002
#define FUSE_FILE_OPS 0x0004
#define FUSE_ATOMIC_O_TRUNC 0x0008
#define FUSE_EXPORT_SUPPORT 0x0010
#define FUSE_BIG_WRITES 0x0020
#define FUSE_DONT_MASK 0x0040
#define FUSE_CUSE_UNRESTRICTED_IOCTL 0x0001
#define FUSE_RELEASE_FLUSH 0x0001
#define FUSE_GETATTR_FH 0x0001
#define FUSE_LK_FLOCK 0x0001
#define FUSE_WRITE_CACHE 0x0001
#define FUSE_WRITE_LOCKOWNER 0x0002
#define FUSE_READ_LOCKOWNER 0x0002
#define FUSE_IOCTL_COMPAT 0x0001
#define FUSE_IOCTL_UNRESTRICTED 0x0002
#define FUSE_IOCTL_RETRY 0x0004
#define FUSE_IOCTL_MAX_IOV 256
#define FUSE_POLL_SCHEDULE_NOTIFY 0x0001
enum fuse_opcode {
FUSE_LOOKUP = 1,
FUSE_FORGET = 2,
FUSE_GETATTR = 3,
FUSE_SETATTR = 4,
FUSE_READLINK = 5,
FUSE_SYMLINK = 6,
FUSE_MKNOD = 8,
FUSE_MKDIR = 9,
FUSE_UNLINK = 10,
FUSE_RMDIR = 11,
FUSE_RENAME = 12,
FUSE_LINK = 13,
FUSE_OPEN = 14,
FUSE_READ = 15,
FUSE_WRITE = 16,
FUSE_STATFS = 17,
FUSE_RELEASE = 18,
FUSE_FSYNC = 20,
FUSE_SETXATTR = 21,
FUSE_GETXATTR = 22,
FUSE_LISTXATTR = 23,
FUSE_REMOVEXATTR = 24,
FUSE_FLUSH = 25,
FUSE_INIT = 26,
FUSE_OPENDIR = 27,
FUSE_READDIR = 28,
FUSE_RELEASEDIR = 29,
FUSE_FSYNCDIR = 30,
FUSE_GETLK = 31,
FUSE_SETLK = 32,
FUSE_SETLKW = 33,
FUSE_ACCESS = 34,
FUSE_CREATE = 35,
FUSE_INTERRUPT = 36,
FUSE_BMAP = 37,
FUSE_DESTROY = 38,
FUSE_IOCTL = 39,
FUSE_POLL = 40,
FUSE_NOTIFY_REPLY = 41,
FUSE_BATCH_FORGET = 42,
FUSE_FALLOCATE = 43,
FUSE_OPCODE_MAX,
FUSE_CUSE_INIT = 4096
};
enum fuse_notify_code {
FUSE_NOTIFY_POLL = 1,
FUSE_NOTIFY_INVAL_INODE = 2,
FUSE_NOTIFY_INVAL_ENTRY = 3,
FUSE_NOTIFY_CODE_MAX
};
#define FUSE_MIN_READ_BUFFER 8192
#define FUSE_COMPAT_ENTRY_OUT_SIZE 120
struct fuse_entry_out {
uint64_t nodeid;
uint64_t generation;
uint64_t entry_valid;
uint64_t attr_valid;
uint32_t entry_valid_nsec;
uint32_t attr_valid_nsec;
struct fuse_attr attr;
};
struct fuse_forget_in {
uint64_t nlookup;
};
struct fuse_getattr_in {
uint32_t getattr_flags;
uint32_t dummy;
uint64_t fh;
};
#define FUSE_COMPAT_ATTR_OUT_SIZE 96
struct fuse_attr_out {
uint64_t attr_valid;
uint32_t attr_valid_nsec;
uint32_t dummy;
struct fuse_attr attr;
};
#define FUSE_COMPAT_MKNOD_IN_SIZE 8
struct fuse_mknod_in {
uint32_t mode;
uint32_t rdev;
uint32_t umask;
uint32_t padding;
};
struct fuse_mkdir_in {
uint32_t mode;
uint32_t umask;
};
struct fuse_rename_in {
uint64_t newdir;
};
struct fuse_link_in {
uint64_t oldnodeid;
};
struct fuse_setattr_in {
uint32_t valid;
uint32_t padding;
uint64_t fh;
uint64_t size;
uint64_t lock_owner;
uint64_t atime;
uint64_t mtime;
uint64_t unused2;
uint32_t atimensec;
uint32_t mtimensec;
uint32_t unused3;
uint32_t mode;
uint32_t unused4;
uint32_t uid;
uint32_t gid;
uint32_t unused5;
};
struct fuse_open_in {
uint32_t flags;
uint32_t unused;
};
struct fuse_create_in {
uint32_t flags;
uint32_t mode;
uint32_t umask;
uint32_t padding;
};
struct fuse_open_out {
uint64_t fh;
uint32_t open_flags; /* FUSE_FOPEN_ */
uint32_t padding;
};
struct fuse_release_in {
uint64_t fh;
uint32_t flags;
uint32_t release_flags;
uint64_t lock_owner;
};
struct fuse_flush_in {
uint64_t fh;
uint32_t unused;
uint32_t padding;
uint64_t lock_owner;
};
struct fuse_read_in {
uint64_t fh;
uint64_t offset;
uint32_t size;
uint32_t read_flags;
uint64_t lock_owner;
uint32_t flags;
uint32_t padding;
};
#define FUSE_COMPAT_WRITE_IN_SIZE 24
struct fuse_write_in {
uint64_t fh;
uint64_t offset;
uint32_t size;
uint32_t write_flags;
uint64_t lock_owner;
uint32_t flags;
uint32_t padding;
};
struct fuse_write_out {
uint32_t size;
uint32_t padding;
};
#define FUSE_COMPAT_STATFS_SIZE 48
struct fuse_statfs_out {
struct fuse_kstatfs st;
};
struct fuse_fsync_in {
uint64_t fh;
uint32_t fsync_flags;
uint32_t padding;
};
struct fuse_setxattr_in {
uint32_t size;
uint32_t flags;
};
struct fuse_getxattr_in {
uint32_t size;
uint32_t padding;
};
struct fuse_getxattr_out {
uint32_t size;
uint32_t padding;
};
struct fuse_lk_in {
uint64_t fh;
uint64_t owner;
struct fuse_file_lock lk;
uint32_t lk_flags;
uint32_t padding;
};
struct fuse_lk_out {
struct fuse_file_lock lk;
};
struct fuse_access_in {
uint32_t mask;
uint32_t padding;
};
struct fuse_init_in {
uint32_t major;
uint32_t minor;
uint32_t max_readahead;
uint32_t flags;
};
struct fuse_init_out {
uint32_t major;
uint32_t minor;
uint32_t max_readahead;
uint32_t flags;
uint32_t unused;
uint32_t max_write;
};
#define FUSE_CUSE_INIT_INFO_MAX 4096
struct fuse_cuse_init_in {
uint32_t major;
uint32_t minor;
uint32_t unused;
uint32_t flags;
};
struct fuse_cuse_init_out {
uint32_t major;
uint32_t minor;
uint32_t unused;
uint32_t flags;
uint32_t max_read;
uint32_t max_write;
uint32_t dev_major; /* chardev major */
uint32_t dev_minor; /* chardev minor */
uint32_t spare[10];
};
struct fuse_interrupt_in {
uint64_t unique;
};
struct fuse_bmap_in {
uint64_t block;
uint32_t blocksize;
uint32_t padding;
};
struct fuse_bmap_out {
uint64_t block;
};
struct fuse_ioctl_in {
uint64_t fh;
uint32_t flags;
uint32_t cmd;
uint64_t arg;
uint32_t in_size;
uint32_t out_size;
};
struct fuse_ioctl_out {
int32_t result;
uint32_t flags;
uint32_t in_iovs;
uint32_t out_iovs;
};
struct fuse_poll_in {
uint64_t fh;
uint64_t kh;
uint32_t flags;
uint32_t padding;
};
struct fuse_poll_out {
uint32_t revents;
uint32_t padding;
};
struct fuse_notify_poll_wakeup_out {
uint64_t kh;
};
struct fuse_fallocate_in {
uint64_t fh;
uint64_t offset;
uint64_t length;
uint32_t mode;
uint32_t padding;
};
#if 0 /* Duplicated in perfuse.h to avoid making fuse.h public */
/* Send from kernel to process */
struct fuse_in_header {
uint32_t len;
uint32_t opcode;
uint64_t unique;
uint64_t nodeid;
uint32_t uid;
uint32_t gid;
uint32_t pid;
uint32_t padding;
};
struct fuse_in_arg {
uint32_t size;
const void *value;
};
struct fuse_in {
struct fuse_in_header h;
uint32_t argpages:1; /* Req fits in a page? Always 1 */
uint32_t numargs;
struct fuse_in_arg args[3]; /* args copied to userspace */
};
/* From process to kernel */
struct fuse_out_header {
uint32_t len;
int32_t error;
uint64_t unique;
};
#endif
struct fuse_dirent {
uint64_t ino;
uint64_t off; /* offset of next field from after foh */
uint32_t namelen;
uint32_t type;
char name[0];
};
#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
#define FUSE_DIRENT_ALIGN(x) \
(((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
#define FUSE_DIRENT_SIZE(d) \
FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
struct fuse_notify_inval_inode_out {
uint64_t ino;
int64_t off;
int64_t len;
};
struct fuse_notify_inval_entry_out {
uint64_t parent;
uint32_t namelen;
uint32_t padding;
};
#endif /* _FUSE_H */