1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
3 This file defines the kernel interface of FUSE
4 Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
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
202 #ifndef _LINUX_FUSE_H
203 #define _LINUX_FUSE_H
206 #include <linux/types.h>
212 * Version negotiation:
214 * Both the kernel and userspace send the version they support in the
215 * INIT request and reply respectively.
217 * If the major versions match then both shall use the smallest
218 * of the two minor versions for communication.
220 * If the kernel supports a larger major version, then userspace shall
221 * reply with the major version it supports, ignore the rest of the
222 * INIT message and expect a new INIT message from the kernel with a
223 * matching major version.
225 * If the library supports a larger major version, then it shall fall
226 * back to the major protocol version sent by the kernel for
227 * communication and reply with that major version (and an arbitrary
228 * supported minor version).
231 /** Version number of this interface */
232 #define FUSE_KERNEL_VERSION 7
234 /** Minor version number of this interface */
235 #define FUSE_KERNEL_MINOR_VERSION 37
237 /** The node ID of the root inode */
238 #define FUSE_ROOT_ID 1
240 /* Make sure all structures are padded to 64bit boundary, so 32bit
241 userspace works under 64bit kernels */
262 struct fuse_kstatfs {
275 struct fuse_file_lock {
279 uint32_t pid; /* tgid */
283 * Bitmasks for fuse_setattr_in.valid
285 #define FATTR_MODE (1 << 0)
286 #define FATTR_UID (1 << 1)
287 #define FATTR_GID (1 << 2)
288 #define FATTR_SIZE (1 << 3)
289 #define FATTR_ATIME (1 << 4)
290 #define FATTR_MTIME (1 << 5)
291 #define FATTR_FH (1 << 6)
292 #define FATTR_ATIME_NOW (1 << 7)
293 #define FATTR_MTIME_NOW (1 << 8)
294 #define FATTR_LOCKOWNER (1 << 9)
295 #define FATTR_CTIME (1 << 10)
296 #define FATTR_KILL_SUIDGID (1 << 11)
299 * Flags returned by the OPEN request
301 * FOPEN_DIRECT_IO: bypass page cache for this open file
302 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
303 * FOPEN_NONSEEKABLE: the file is not seekable
304 * FOPEN_CACHE_DIR: allow caching this directory
305 * FOPEN_STREAM: the file is stream-like (no file position at all)
306 * FOPEN_NOFLUSH: don't flush data cache on close (unless FUSE_WRITEBACK_CACHE)
308 #define FOPEN_DIRECT_IO (1 << 0)
309 #define FOPEN_KEEP_CACHE (1 << 1)
310 #define FOPEN_NONSEEKABLE (1 << 2)
311 #define FOPEN_CACHE_DIR (1 << 3)
312 #define FOPEN_STREAM (1 << 4)
313 #define FOPEN_NOFLUSH (1 << 5)
316 * INIT request/reply flags
318 * FUSE_ASYNC_READ: asynchronous read requests
319 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
320 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
321 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
322 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
323 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
324 * FUSE_DONT_MASK: don't apply umask to file mode on create operations
325 * FUSE_SPLICE_WRITE: kernel supports splice write on the device
326 * FUSE_SPLICE_MOVE: kernel supports splice move on the device
327 * FUSE_SPLICE_READ: kernel supports splice read on the device
328 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
329 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
330 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
331 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
332 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus
333 * FUSE_ASYNC_DIO: asynchronous direct I/O submission
334 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
335 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
336 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir
337 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc
338 * FUSE_POSIX_ACL: filesystem supports posix acls
339 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED
340 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages
341 * FUSE_CACHE_SYMLINKS: cache READLINK responses
342 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir
343 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request
344 * FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for
345 * foffset and moffset fields in struct
346 * fuse_setupmapping_out and fuse_removemapping_one.
347 * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts
348 * FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc.
349 * Upon write/truncate suid/sgid is only killed if caller
350 * does not have CAP_FSETID. Additionally upon
351 * write/truncate sgid is killed only if file has group
352 * execute permission. (Same as Linux VFS behavior).
353 * FUSE_SETXATTR_EXT: Server supports extended struct fuse_setxattr_in
354 * FUSE_INIT_EXT: extended fuse_init_in request
355 * FUSE_INIT_RESERVED: reserved, do not use
356 * FUSE_SECURITY_CTX: add security context to create, mkdir, symlink, and
358 * FUSE_HAS_INODE_DAX: use per inode DAX
360 #define FUSE_ASYNC_READ (1 << 0)
361 #define FUSE_POSIX_LOCKS (1 << 1)
362 #define FUSE_FILE_OPS (1 << 2)
363 #define FUSE_ATOMIC_O_TRUNC (1 << 3)
364 #define FUSE_EXPORT_SUPPORT (1 << 4)
365 #define FUSE_BIG_WRITES (1 << 5)
366 #define FUSE_DONT_MASK (1 << 6)
367 #define FUSE_SPLICE_WRITE (1 << 7)
368 #define FUSE_SPLICE_MOVE (1 << 8)
369 #define FUSE_SPLICE_READ (1 << 9)
370 #define FUSE_FLOCK_LOCKS (1 << 10)
371 #define FUSE_HAS_IOCTL_DIR (1 << 11)
372 #define FUSE_AUTO_INVAL_DATA (1 << 12)
373 #define FUSE_DO_READDIRPLUS (1 << 13)
374 #define FUSE_READDIRPLUS_AUTO (1 << 14)
375 #define FUSE_ASYNC_DIO (1 << 15)
376 #define FUSE_WRITEBACK_CACHE (1 << 16)
377 #define FUSE_NO_OPEN_SUPPORT (1 << 17)
378 #define FUSE_PARALLEL_DIROPS (1 << 18)
379 #define FUSE_HANDLE_KILLPRIV (1 << 19)
380 #define FUSE_POSIX_ACL (1 << 20)
381 #define FUSE_ABORT_ERROR (1 << 21)
382 #define FUSE_MAX_PAGES (1 << 22)
383 #define FUSE_CACHE_SYMLINKS (1 << 23)
384 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
385 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
386 #define FUSE_MAP_ALIGNMENT (1 << 26)
387 #define FUSE_SUBMOUNTS (1 << 27)
388 #define FUSE_HANDLE_KILLPRIV_V2 (1 << 28)
389 #define FUSE_SETXATTR_EXT (1 << 29)
390 #define FUSE_INIT_EXT (1 << 30)
391 #define FUSE_INIT_RESERVED (1 << 31)
392 /* bits 32..63 get shifted down 32 bits into the flags2 field */
393 #define FUSE_SECURITY_CTX (1ULL << 32)
394 #define FUSE_HAS_INODE_DAX (1ULL << 33)
397 * CUSE INIT request/reply flags
399 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl
401 #define CUSE_UNRESTRICTED_IOCTL (1 << 0)
406 #define FUSE_RELEASE_FLUSH (1 << 0)
407 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
412 #define FUSE_GETATTR_FH (1 << 0)
417 #define FUSE_LK_FLOCK (1 << 0)
422 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
423 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
424 * FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits
426 #define FUSE_WRITE_CACHE (1 << 0)
427 #define FUSE_WRITE_LOCKOWNER (1 << 1)
428 #define FUSE_WRITE_KILL_SUIDGID (1 << 2)
430 /* Obsolete alias; this flag implies killing suid/sgid only. */
431 #define FUSE_WRITE_KILL_PRIV FUSE_WRITE_KILL_SUIDGID
436 #define FUSE_READ_LOCKOWNER (1 << 1)
441 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
442 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
443 * FUSE_IOCTL_RETRY: retry with new iovecs
444 * FUSE_IOCTL_32BIT: 32bit ioctl
445 * FUSE_IOCTL_DIR: is a directory
446 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t)
448 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
450 #define FUSE_IOCTL_COMPAT (1 << 0)
451 #define FUSE_IOCTL_UNRESTRICTED (1 << 1)
452 #define FUSE_IOCTL_RETRY (1 << 2)
453 #define FUSE_IOCTL_32BIT (1 << 3)
454 #define FUSE_IOCTL_DIR (1 << 4)
455 #define FUSE_IOCTL_COMPAT_X32 (1 << 5)
457 #define FUSE_IOCTL_MAX_IOV 256
462 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
464 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
469 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
471 #define FUSE_FSYNC_FDATASYNC (1 << 0)
476 * FUSE_ATTR_SUBMOUNT: Object is a submount root
477 * FUSE_ATTR_DAX: Enable DAX for this file in per inode DAX mode
479 #define FUSE_ATTR_SUBMOUNT (1 << 0)
480 #define FUSE_ATTR_DAX (1 << 1)
484 * FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable
486 #define FUSE_OPEN_KILL_SUIDGID (1 << 0)
490 * FUSE_SETXATTR_ACL_KILL_SGID: Clear SGID when system.posix_acl_access is set
492 #define FUSE_SETXATTR_ACL_KILL_SGID (1 << 0)
496 FUSE_FORGET = 2, /* no reply */
516 FUSE_REMOVEXATTR = 24,
521 FUSE_RELEASEDIR = 29,
533 FUSE_NOTIFY_REPLY = 41,
534 FUSE_BATCH_FORGET = 42,
536 FUSE_READDIRPLUS = 44,
539 FUSE_COPY_FILE_RANGE = 47,
540 FUSE_SETUPMAPPING = 48,
541 FUSE_REMOVEMAPPING = 49,
545 /* CUSE specific operations */
548 /* Reserved opcodes: helpful to detect structure endian-ness */
549 CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */
550 FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */
553 enum fuse_notify_code {
554 FUSE_NOTIFY_POLL = 1,
555 FUSE_NOTIFY_INVAL_INODE = 2,
556 FUSE_NOTIFY_INVAL_ENTRY = 3,
557 FUSE_NOTIFY_STORE = 4,
558 FUSE_NOTIFY_RETRIEVE = 5,
559 FUSE_NOTIFY_DELETE = 6,
560 FUSE_NOTIFY_CODE_MAX,
563 /* The read buffer is required to be at least 8k, but may be much larger */
564 #define FUSE_MIN_READ_BUFFER 8192
566 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
568 struct fuse_entry_out {
569 uint64_t nodeid; /* Inode ID */
570 uint64_t generation; /* Inode generation: nodeid:gen must
571 be unique for the fs's lifetime */
572 uint64_t entry_valid; /* Cache timeout for the name */
573 uint64_t attr_valid; /* Cache timeout for the attributes */
574 uint32_t entry_valid_nsec;
575 uint32_t attr_valid_nsec;
576 struct fuse_attr attr;
579 struct fuse_forget_in {
583 struct fuse_forget_one {
588 struct fuse_batch_forget_in {
593 struct fuse_getattr_in {
594 uint32_t getattr_flags;
599 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
601 struct fuse_attr_out {
602 uint64_t attr_valid; /* Cache timeout for the attributes */
603 uint32_t attr_valid_nsec;
605 struct fuse_attr attr;
608 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
610 struct fuse_mknod_in {
617 struct fuse_mkdir_in {
622 struct fuse_rename_in {
626 struct fuse_rename2_in {
632 struct fuse_link_in {
636 struct fuse_setattr_in {
655 struct fuse_open_in {
657 uint32_t open_flags; /* FUSE_OPEN_... */
660 struct fuse_create_in {
664 uint32_t open_flags; /* FUSE_OPEN_... */
667 struct fuse_open_out {
673 struct fuse_release_in {
676 uint32_t release_flags;
680 struct fuse_flush_in {
687 struct fuse_read_in {
697 #define FUSE_COMPAT_WRITE_IN_SIZE 24
699 struct fuse_write_in {
703 uint32_t write_flags;
709 struct fuse_write_out {
714 #define FUSE_COMPAT_STATFS_SIZE 48
716 struct fuse_statfs_out {
717 struct fuse_kstatfs st;
720 struct fuse_fsync_in {
722 uint32_t fsync_flags;
726 #define FUSE_COMPAT_SETXATTR_IN_SIZE 8
728 struct fuse_setxattr_in {
731 uint32_t setxattr_flags;
735 struct fuse_getxattr_in {
740 struct fuse_getxattr_out {
748 struct fuse_file_lock lk;
754 struct fuse_file_lock lk;
757 struct fuse_access_in {
762 struct fuse_init_in {
765 uint32_t max_readahead;
771 #define FUSE_COMPAT_INIT_OUT_SIZE 8
772 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
774 struct fuse_init_out {
777 uint32_t max_readahead;
779 uint16_t max_background;
780 uint16_t congestion_threshold;
784 uint16_t map_alignment;
789 #define CUSE_INIT_INFO_MAX 4096
791 struct cuse_init_in {
798 struct cuse_init_out {
805 uint32_t dev_major; /* chardev major */
806 uint32_t dev_minor; /* chardev minor */
810 struct fuse_interrupt_in {
814 struct fuse_bmap_in {
820 struct fuse_bmap_out {
824 struct fuse_ioctl_in {
833 struct fuse_ioctl_iovec {
838 struct fuse_ioctl_out {
845 struct fuse_poll_in {
852 struct fuse_poll_out {
857 struct fuse_notify_poll_wakeup_out {
861 struct fuse_fallocate_in {
869 struct fuse_in_header {
880 struct fuse_out_header {
894 /* Align variable length records to 64bit boundary */
895 #define FUSE_REC_ALIGN(x) \
896 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
898 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
899 #define FUSE_DIRENT_ALIGN(x) FUSE_REC_ALIGN(x)
900 #define FUSE_DIRENT_SIZE(d) \
901 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
903 struct fuse_direntplus {
904 struct fuse_entry_out entry_out;
905 struct fuse_dirent dirent;
908 #define FUSE_NAME_OFFSET_DIRENTPLUS \
909 offsetof(struct fuse_direntplus, dirent.name)
910 #define FUSE_DIRENTPLUS_SIZE(d) \
911 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
913 struct fuse_notify_inval_inode_out {
919 struct fuse_notify_inval_entry_out {
925 struct fuse_notify_delete_out {
932 struct fuse_notify_store_out {
939 struct fuse_notify_retrieve_out {
940 uint64_t notify_unique;
947 /* Matches the size of fuse_write_in */
948 struct fuse_notify_retrieve_in {
958 #define FUSE_DEV_IOC_MAGIC 229
959 #define FUSE_DEV_IOC_CLONE _IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t)
961 struct fuse_lseek_in {
968 struct fuse_lseek_out {
972 struct fuse_copy_file_range_in {
982 #define FUSE_SETUPMAPPING_FLAG_WRITE (1ull << 0)
983 #define FUSE_SETUPMAPPING_FLAG_READ (1ull << 1)
984 struct fuse_setupmapping_in {
985 /* An already open handle */
987 /* Offset into the file to start the mapping */
989 /* Length of mapping required */
991 /* Flags, FUSE_SETUPMAPPING_FLAG_* */
993 /* Offset in Memory Window */
997 struct fuse_removemapping_in {
998 /* number of fuse_removemapping_one follows */
1002 struct fuse_removemapping_one {
1003 /* Offset into the dax window start the unmapping */
1005 /* Length of mapping required */
1009 #define FUSE_REMOVEMAPPING_MAX_ENTRY \
1010 (PAGE_SIZE / sizeof(struct fuse_removemapping_one))
1012 struct fuse_syncfs_in {
1017 * For each security context, send fuse_secctx with size of security context
1018 * fuse_secctx will be followed by security context name and this in turn
1019 * will be followed by actual context label.
1020 * fuse_secctx, name, context
1022 struct fuse_secctx {
1028 * Contains the information about how many fuse_secctx structures are being
1029 * sent and what's the total size of all security contexts (including
1030 * size of fuse_secctx_header).
1033 struct fuse_secctx_header {
1038 #endif /* _LINUX_FUSE_H */