1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
3 This file defines the kernel interface of FUSE
6 This program can be distributed under the terms of the GNU GPL.
9 This -- and only this -- header file may also be distributed under
10 the terms of the BSD Licence as follows:
12 Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved.
14 Redistribution and use in source and binary forms, with or without
15 modification, are permitted provided that the following conditions
17 1. Redistributions of source code must retain the above copyright
18 notice, this list of conditions and the following disclaimer.
19 2. Redistributions in binary form must reproduce the above copyright
20 notice, this list of conditions and the following disclaimer in the
21 documentation and/or other materials provided with the distribution.
23 THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
27 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * This file defines the kernel interface of FUSE
42 * - add the following messages:
43 * FUSE_SETATTR, FUSE_SYMLINK, FUSE_MKNOD, FUSE_MKDIR, FUSE_UNLINK,
44 * FUSE_RMDIR, FUSE_RENAME, FUSE_LINK, FUSE_OPEN, FUSE_READ, FUSE_WRITE,
45 * FUSE_RELEASE, FUSE_FSYNC, FUSE_FLUSH, FUSE_SETXATTR, FUSE_GETXATTR,
46 * FUSE_LISTXATTR, FUSE_REMOVEXATTR, FUSE_OPENDIR, FUSE_READDIR,
48 * - add padding to messages to accommodate 32-bit servers on 64-bit kernels
51 * - add FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE flags
52 * - add FUSE_FSYNCDIR message
55 * - add FUSE_ACCESS message
56 * - add FUSE_CREATE message
57 * - add filehandle to fuse_setattr_in
60 * - add frsize to fuse_kstatfs
61 * - clean up request size limit checking
64 * - add flags and max_write to fuse_init_out
67 * - add max_readahead to fuse_init_in and fuse_init_out
70 * - add FUSE_INTERRUPT message
71 * - add POSIX file lock support
74 * - add lock_owner and flags fields to fuse_release_in
75 * - add FUSE_BMAP message
76 * - add FUSE_DESTROY message
79 * - new fuse_getattr_in input argument of GETATTR
80 * - add lk_flags in fuse_lk_in
81 * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
82 * - add blksize field to fuse_attr
83 * - add file flags field to fuse_read_in and fuse_write_in
84 * - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in
87 * - add nonseekable open flag
91 * - add unsolicited notification support
92 * - add POLL message and NOTIFY_POLL notification
95 * - add umask flag to input argument of create, mknod and mkdir
96 * - add notification messages for invalidation of inodes and
100 * - make max number of background requests and congestion threshold
104 * - add splice support to fuse device
108 * - add retrieve notify
111 * - add BATCH_FORGET request
112 * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
113 * fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
114 * - add FUSE_IOCTL_32BIT flag
117 * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
120 * - add FUSE_IOCTL_DIR flag
121 * - add FUSE_NOTIFY_DELETE
124 * - add FUSE_FALLOCATE
127 * - add FUSE_AUTO_INVAL_DATA
130 * - add FUSE_READDIRPLUS
131 * - send the requested events in POLL request
134 * - add FUSE_ASYNC_DIO
137 * - add FUSE_WRITEBACK_CACHE
138 * - add time_gran to fuse_init_out
139 * - add reserved space to fuse_init_out
141 * - add ctime and ctimensec to fuse_setattr_in
142 * - add FUSE_RENAME2 request
143 * - add FUSE_NO_OPEN_SUPPORT flag
146 * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support
149 * - add FUSE_PARALLEL_DIROPS
152 * - add FUSE_HANDLE_KILLPRIV
153 * - add FUSE_POSIX_ACL
156 * - add FUSE_ABORT_ERROR
159 * - add FUSE_COPY_FILE_RANGE
160 * - add FOPEN_CACHE_DIR
161 * - add FUSE_MAX_PAGES, add max_pages to init_out
162 * - add FUSE_CACHE_SYMLINKS
165 * - add FUSE_NO_OPENDIR_SUPPORT flag
168 * - add FUSE_EXPLICIT_INVAL_DATA
169 * - add FUSE_IOCTL_COMPAT_X32
172 * - add FUSE_WRITE_KILL_PRIV flag
173 * - add FUSE_SETUPMAPPING and FUSE_REMOVEMAPPING
174 * - add map_alignment to fuse_init_out, add FUSE_MAP_ALIGNMENT flag
177 * - add flags to fuse_attr, add FUSE_ATTR_SUBMOUNT, add FUSE_SUBMOUNTS
180 * - add FUSE_HANDLE_KILLPRIV_V2, FUSE_WRITE_KILL_SUIDGID, FATTR_KILL_SUIDGID
181 * - add FUSE_OPEN_KILL_SUIDGID
182 * - extend fuse_setxattr_in, add FUSE_SETXATTR_EXT
183 * - add FUSE_SETXATTR_ACL_KILL_SGID
189 * - add FOPEN_NOFLUSH
192 * - extend fuse_init_in with reserved fields, add FUSE_INIT_EXT init flag
193 * - add flags2 to fuse_init_in and fuse_init_out
194 * - add FUSE_SECURITY_CTX init flag
195 * - add security context to create, mkdir, symlink, and mknod requests
196 * - add FUSE_HAS_INODE_DAX, FUSE_ATTR_DAX
199 #ifndef _LINUX_FUSE_H
200 #define _LINUX_FUSE_H
203 #include <linux/types.h>
209 * Version negotiation:
211 * Both the kernel and userspace send the version they support in the
212 * INIT request and reply respectively.
214 * If the major versions match then both shall use the smallest
215 * of the two minor versions for communication.
217 * If the kernel supports a larger major version, then userspace shall
218 * reply with the major version it supports, ignore the rest of the
219 * INIT message and expect a new INIT message from the kernel with a
220 * matching major version.
222 * If the library supports a larger major version, then it shall fall
223 * back to the major protocol version sent by the kernel for
224 * communication and reply with that major version (and an arbitrary
225 * supported minor version).
228 /** Version number of this interface */
229 #define FUSE_KERNEL_VERSION 7
231 /** Minor version number of this interface */
232 #define FUSE_KERNEL_MINOR_VERSION 36
234 /** The node ID of the root inode */
235 #define FUSE_ROOT_ID 1
237 /* Make sure all structures are padded to 64bit boundary, so 32bit
238 userspace works under 64bit kernels */
259 struct fuse_kstatfs {
272 struct fuse_file_lock {
276 uint32_t pid; /* tgid */
280 * Bitmasks for fuse_setattr_in.valid
282 #define FATTR_MODE (1 << 0)
283 #define FATTR_UID (1 << 1)
284 #define FATTR_GID (1 << 2)
285 #define FATTR_SIZE (1 << 3)
286 #define FATTR_ATIME (1 << 4)
287 #define FATTR_MTIME (1 << 5)
288 #define FATTR_FH (1 << 6)
289 #define FATTR_ATIME_NOW (1 << 7)
290 #define FATTR_MTIME_NOW (1 << 8)
291 #define FATTR_LOCKOWNER (1 << 9)
292 #define FATTR_CTIME (1 << 10)
293 #define FATTR_KILL_SUIDGID (1 << 11)
296 * Flags returned by the OPEN request
298 * FOPEN_DIRECT_IO: bypass page cache for this open file
299 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
300 * FOPEN_NONSEEKABLE: the file is not seekable
301 * FOPEN_CACHE_DIR: allow caching this directory
302 * FOPEN_STREAM: the file is stream-like (no file position at all)
303 * FOPEN_NOFLUSH: don't flush data cache on close (unless FUSE_WRITEBACK_CACHE)
305 #define FOPEN_DIRECT_IO (1 << 0)
306 #define FOPEN_KEEP_CACHE (1 << 1)
307 #define FOPEN_NONSEEKABLE (1 << 2)
308 #define FOPEN_CACHE_DIR (1 << 3)
309 #define FOPEN_STREAM (1 << 4)
310 #define FOPEN_NOFLUSH (1 << 5)
313 * INIT request/reply flags
315 * FUSE_ASYNC_READ: asynchronous read requests
316 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
317 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
318 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
319 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
320 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
321 * FUSE_DONT_MASK: don't apply umask to file mode on create operations
322 * FUSE_SPLICE_WRITE: kernel supports splice write on the device
323 * FUSE_SPLICE_MOVE: kernel supports splice move on the device
324 * FUSE_SPLICE_READ: kernel supports splice read on the device
325 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
326 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
327 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
328 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
329 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus
330 * FUSE_ASYNC_DIO: asynchronous direct I/O submission
331 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
332 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
333 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir
334 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc
335 * FUSE_POSIX_ACL: filesystem supports posix acls
336 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED
337 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages
338 * FUSE_CACHE_SYMLINKS: cache READLINK responses
339 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir
340 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request
341 * FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for
342 * foffset and moffset fields in struct
343 * fuse_setupmapping_out and fuse_removemapping_one.
344 * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts
345 * FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc.
346 * Upon write/truncate suid/sgid is only killed if caller
347 * does not have CAP_FSETID. Additionally upon
348 * write/truncate sgid is killed only if file has group
349 * execute permission. (Same as Linux VFS behavior).
350 * FUSE_SETXATTR_EXT: Server supports extended struct fuse_setxattr_in
351 * FUSE_INIT_EXT: extended fuse_init_in request
352 * FUSE_INIT_RESERVED: reserved, do not use
353 * FUSE_SECURITY_CTX: add security context to create, mkdir, symlink, and
355 * FUSE_HAS_INODE_DAX: use per inode DAX
357 #define FUSE_ASYNC_READ (1 << 0)
358 #define FUSE_POSIX_LOCKS (1 << 1)
359 #define FUSE_FILE_OPS (1 << 2)
360 #define FUSE_ATOMIC_O_TRUNC (1 << 3)
361 #define FUSE_EXPORT_SUPPORT (1 << 4)
362 #define FUSE_BIG_WRITES (1 << 5)
363 #define FUSE_DONT_MASK (1 << 6)
364 #define FUSE_SPLICE_WRITE (1 << 7)
365 #define FUSE_SPLICE_MOVE (1 << 8)
366 #define FUSE_SPLICE_READ (1 << 9)
367 #define FUSE_FLOCK_LOCKS (1 << 10)
368 #define FUSE_HAS_IOCTL_DIR (1 << 11)
369 #define FUSE_AUTO_INVAL_DATA (1 << 12)
370 #define FUSE_DO_READDIRPLUS (1 << 13)
371 #define FUSE_READDIRPLUS_AUTO (1 << 14)
372 #define FUSE_ASYNC_DIO (1 << 15)
373 #define FUSE_WRITEBACK_CACHE (1 << 16)
374 #define FUSE_NO_OPEN_SUPPORT (1 << 17)
375 #define FUSE_PARALLEL_DIROPS (1 << 18)
376 #define FUSE_HANDLE_KILLPRIV (1 << 19)
377 #define FUSE_POSIX_ACL (1 << 20)
378 #define FUSE_ABORT_ERROR (1 << 21)
379 #define FUSE_MAX_PAGES (1 << 22)
380 #define FUSE_CACHE_SYMLINKS (1 << 23)
381 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
382 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
383 #define FUSE_MAP_ALIGNMENT (1 << 26)
384 #define FUSE_SUBMOUNTS (1 << 27)
385 #define FUSE_HANDLE_KILLPRIV_V2 (1 << 28)
386 #define FUSE_SETXATTR_EXT (1 << 29)
387 #define FUSE_INIT_EXT (1 << 30)
388 #define FUSE_INIT_RESERVED (1 << 31)
389 /* bits 32..63 get shifted down 32 bits into the flags2 field */
390 #define FUSE_SECURITY_CTX (1ULL << 32)
391 #define FUSE_HAS_INODE_DAX (1ULL << 33)
394 * CUSE INIT request/reply flags
396 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl
398 #define CUSE_UNRESTRICTED_IOCTL (1 << 0)
403 #define FUSE_RELEASE_FLUSH (1 << 0)
404 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
409 #define FUSE_GETATTR_FH (1 << 0)
414 #define FUSE_LK_FLOCK (1 << 0)
419 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
420 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
421 * FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits
423 #define FUSE_WRITE_CACHE (1 << 0)
424 #define FUSE_WRITE_LOCKOWNER (1 << 1)
425 #define FUSE_WRITE_KILL_SUIDGID (1 << 2)
427 /* Obsolete alias; this flag implies killing suid/sgid only. */
428 #define FUSE_WRITE_KILL_PRIV FUSE_WRITE_KILL_SUIDGID
433 #define FUSE_READ_LOCKOWNER (1 << 1)
438 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
439 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
440 * FUSE_IOCTL_RETRY: retry with new iovecs
441 * FUSE_IOCTL_32BIT: 32bit ioctl
442 * FUSE_IOCTL_DIR: is a directory
443 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t)
445 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
447 #define FUSE_IOCTL_COMPAT (1 << 0)
448 #define FUSE_IOCTL_UNRESTRICTED (1 << 1)
449 #define FUSE_IOCTL_RETRY (1 << 2)
450 #define FUSE_IOCTL_32BIT (1 << 3)
451 #define FUSE_IOCTL_DIR (1 << 4)
452 #define FUSE_IOCTL_COMPAT_X32 (1 << 5)
454 #define FUSE_IOCTL_MAX_IOV 256
459 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
461 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
466 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
468 #define FUSE_FSYNC_FDATASYNC (1 << 0)
473 * FUSE_ATTR_SUBMOUNT: Object is a submount root
474 * FUSE_ATTR_DAX: Enable DAX for this file in per inode DAX mode
476 #define FUSE_ATTR_SUBMOUNT (1 << 0)
477 #define FUSE_ATTR_DAX (1 << 1)
481 * FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable
483 #define FUSE_OPEN_KILL_SUIDGID (1 << 0)
487 * FUSE_SETXATTR_ACL_KILL_SGID: Clear SGID when system.posix_acl_access is set
489 #define FUSE_SETXATTR_ACL_KILL_SGID (1 << 0)
493 FUSE_FORGET = 2, /* no reply */
513 FUSE_REMOVEXATTR = 24,
518 FUSE_RELEASEDIR = 29,
530 FUSE_NOTIFY_REPLY = 41,
531 FUSE_BATCH_FORGET = 42,
533 FUSE_READDIRPLUS = 44,
536 FUSE_COPY_FILE_RANGE = 47,
537 FUSE_SETUPMAPPING = 48,
538 FUSE_REMOVEMAPPING = 49,
541 /* CUSE specific operations */
544 /* Reserved opcodes: helpful to detect structure endian-ness */
545 CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */
546 FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */
549 enum fuse_notify_code {
550 FUSE_NOTIFY_POLL = 1,
551 FUSE_NOTIFY_INVAL_INODE = 2,
552 FUSE_NOTIFY_INVAL_ENTRY = 3,
553 FUSE_NOTIFY_STORE = 4,
554 FUSE_NOTIFY_RETRIEVE = 5,
555 FUSE_NOTIFY_DELETE = 6,
556 FUSE_NOTIFY_CODE_MAX,
559 /* The read buffer is required to be at least 8k, but may be much larger */
560 #define FUSE_MIN_READ_BUFFER 8192
562 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
564 struct fuse_entry_out {
565 uint64_t nodeid; /* Inode ID */
566 uint64_t generation; /* Inode generation: nodeid:gen must
567 be unique for the fs's lifetime */
568 uint64_t entry_valid; /* Cache timeout for the name */
569 uint64_t attr_valid; /* Cache timeout for the attributes */
570 uint32_t entry_valid_nsec;
571 uint32_t attr_valid_nsec;
572 struct fuse_attr attr;
575 struct fuse_forget_in {
579 struct fuse_forget_one {
584 struct fuse_batch_forget_in {
589 struct fuse_getattr_in {
590 uint32_t getattr_flags;
595 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
597 struct fuse_attr_out {
598 uint64_t attr_valid; /* Cache timeout for the attributes */
599 uint32_t attr_valid_nsec;
601 struct fuse_attr attr;
604 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
606 struct fuse_mknod_in {
613 struct fuse_mkdir_in {
618 struct fuse_rename_in {
622 struct fuse_rename2_in {
628 struct fuse_link_in {
632 struct fuse_setattr_in {
651 struct fuse_open_in {
653 uint32_t open_flags; /* FUSE_OPEN_... */
656 struct fuse_create_in {
660 uint32_t open_flags; /* FUSE_OPEN_... */
663 struct fuse_open_out {
669 struct fuse_release_in {
672 uint32_t release_flags;
676 struct fuse_flush_in {
683 struct fuse_read_in {
693 #define FUSE_COMPAT_WRITE_IN_SIZE 24
695 struct fuse_write_in {
699 uint32_t write_flags;
705 struct fuse_write_out {
710 #define FUSE_COMPAT_STATFS_SIZE 48
712 struct fuse_statfs_out {
713 struct fuse_kstatfs st;
716 struct fuse_fsync_in {
718 uint32_t fsync_flags;
722 #define FUSE_COMPAT_SETXATTR_IN_SIZE 8
724 struct fuse_setxattr_in {
727 uint32_t setxattr_flags;
731 struct fuse_getxattr_in {
736 struct fuse_getxattr_out {
744 struct fuse_file_lock lk;
750 struct fuse_file_lock lk;
753 struct fuse_access_in {
758 struct fuse_init_in {
761 uint32_t max_readahead;
767 #define FUSE_COMPAT_INIT_OUT_SIZE 8
768 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
770 struct fuse_init_out {
773 uint32_t max_readahead;
775 uint16_t max_background;
776 uint16_t congestion_threshold;
780 uint16_t map_alignment;
785 #define CUSE_INIT_INFO_MAX 4096
787 struct cuse_init_in {
794 struct cuse_init_out {
801 uint32_t dev_major; /* chardev major */
802 uint32_t dev_minor; /* chardev minor */
806 struct fuse_interrupt_in {
810 struct fuse_bmap_in {
816 struct fuse_bmap_out {
820 struct fuse_ioctl_in {
829 struct fuse_ioctl_iovec {
834 struct fuse_ioctl_out {
841 struct fuse_poll_in {
848 struct fuse_poll_out {
853 struct fuse_notify_poll_wakeup_out {
857 struct fuse_fallocate_in {
865 struct fuse_in_header {
876 struct fuse_out_header {
890 /* Align variable length records to 64bit boundary */
891 #define FUSE_REC_ALIGN(x) \
892 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
894 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
895 #define FUSE_DIRENT_ALIGN(x) FUSE_REC_ALIGN(x)
896 #define FUSE_DIRENT_SIZE(d) \
897 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
899 struct fuse_direntplus {
900 struct fuse_entry_out entry_out;
901 struct fuse_dirent dirent;
904 #define FUSE_NAME_OFFSET_DIRENTPLUS \
905 offsetof(struct fuse_direntplus, dirent.name)
906 #define FUSE_DIRENTPLUS_SIZE(d) \
907 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
909 struct fuse_notify_inval_inode_out {
915 struct fuse_notify_inval_entry_out {
921 struct fuse_notify_delete_out {
928 struct fuse_notify_store_out {
935 struct fuse_notify_retrieve_out {
936 uint64_t notify_unique;
943 /* Matches the size of fuse_write_in */
944 struct fuse_notify_retrieve_in {
954 #define FUSE_DEV_IOC_MAGIC 229
955 #define FUSE_DEV_IOC_CLONE _IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t)
957 struct fuse_lseek_in {
964 struct fuse_lseek_out {
968 struct fuse_copy_file_range_in {
978 #define FUSE_SETUPMAPPING_FLAG_WRITE (1ull << 0)
979 #define FUSE_SETUPMAPPING_FLAG_READ (1ull << 1)
980 struct fuse_setupmapping_in {
981 /* An already open handle */
983 /* Offset into the file to start the mapping */
985 /* Length of mapping required */
987 /* Flags, FUSE_SETUPMAPPING_FLAG_* */
989 /* Offset in Memory Window */
993 struct fuse_removemapping_in {
994 /* number of fuse_removemapping_one follows */
998 struct fuse_removemapping_one {
999 /* Offset into the dax window start the unmapping */
1001 /* Length of mapping required */
1005 #define FUSE_REMOVEMAPPING_MAX_ENTRY \
1006 (PAGE_SIZE / sizeof(struct fuse_removemapping_one))
1008 struct fuse_syncfs_in {
1013 * For each security context, send fuse_secctx with size of security context
1014 * fuse_secctx will be followed by security context name and this in turn
1015 * will be followed by actual context label.
1016 * fuse_secctx, name, context
1018 struct fuse_secctx {
1024 * Contains the information about how many fuse_secctx structures are being
1025 * sent and what's the total size of all security contexts (including
1026 * size of fuse_secctx_header).
1029 struct fuse_secctx_header {
1034 #endif /* _LINUX_FUSE_H */