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2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67 
 kernel/include/uapi/linux/fuse.h
....@@ -38,12 +38,50 @@
3838  *
3939  * Protocol changelog:
4040  *
41
+ * 7.1:
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,
47
+ *      FUSE_RELEASEDIR
48
+ *  - add padding to messages to accommodate 32-bit servers on 64-bit kernels
49
+ *
50
+ * 7.2:
51
+ *  - add FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE flags
52
+ *  - add FUSE_FSYNCDIR message
53
+ *
54
+ * 7.3:
55
+ *  - add FUSE_ACCESS message
56
+ *  - add FUSE_CREATE message
57
+ *  - add filehandle to fuse_setattr_in
58
+ *
59
+ * 7.4:
60
+ *  - add frsize to fuse_kstatfs
61
+ *  - clean up request size limit checking
62
+ *
63
+ * 7.5:
64
+ *  - add flags and max_write to fuse_init_out
65
+ *
66
+ * 7.6:
67
+ *  - add max_readahead to fuse_init_in and fuse_init_out
68
+ *
69
+ * 7.7:
70
+ *  - add FUSE_INTERRUPT message
71
+ *  - add POSIX file lock support
72
+ *
73
+ * 7.8:
74
+ *  - add lock_owner and flags fields to fuse_release_in
75
+ *  - add FUSE_BMAP message
76
+ *  - add FUSE_DESTROY message
77
+ *
4178  * 7.9:
4279  *  - new fuse_getattr_in input argument of GETATTR
4380  *  - add lk_flags in fuse_lk_in
4481  *  - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
4582  *  - add blksize field to fuse_attr
4683  *  - add file flags field to fuse_read_in and fuse_write_in
84
+ *  - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in
4785  *
4886  * 7.10
4987  *  - add nonseekable open flag
....@@ -54,7 +92,7 @@
5492  *  - add POLL message and NOTIFY_POLL notification
5593  *
5694  * 7.12
57
- *  - add umask flag to input argument of open, mknod and mkdir
95
+ *  - add umask flag to input argument of create, mknod and mkdir
5896  *  - add notification messages for invalidation of inodes and
5997  *    directory entries
6098  *
....@@ -116,6 +154,27 @@
116154  *
117155  *  7.27
118156  *  - add FUSE_ABORT_ERROR
157
+ *
158
+ *  7.28
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
163
+ *
164
+ *  7.29
165
+ *  - add FUSE_NO_OPENDIR_SUPPORT flag
166
+ *
167
+ *  7.30
168
+ *  - add FUSE_EXPLICIT_INVAL_DATA
169
+ *  - add FUSE_IOCTL_COMPAT_X32
170
+ *
171
+ *  7.31
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
175
+ *
176
+ *  7.32
177
+ *  - add flags to fuse_attr, add FUSE_ATTR_SUBMOUNT, add FUSE_SUBMOUNTS
119178  */
120179 
121180 #ifndef _LINUX_FUSE_H
....@@ -151,7 +210,7 @@
151210 #define FUSE_KERNEL_VERSION 7
152211 
153212 /** Minor version number of this interface */
154
-#define FUSE_KERNEL_MINOR_VERSION 27
213
+#define FUSE_KERNEL_MINOR_VERSION 32
155214 
156215 /** The node ID of the root inode */
157216 #define FUSE_ROOT_ID 1
....@@ -175,7 +234,7 @@
175234 	uint32_t	gid;
176235 	uint32_t	rdev;
177236 	uint32_t	blksize;
178
-	uint32_t	padding;
237
+	uint32_t	flags;
179238 };
180239 
181240 struct fuse_kstatfs {
....@@ -219,11 +278,13 @@
219278  * FOPEN_DIRECT_IO: bypass page cache for this open file
220279  * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
221280  * FOPEN_NONSEEKABLE: the file is not seekable
281
+ * FOPEN_CACHE_DIR: allow caching this directory
222282  * FOPEN_STREAM: the file is stream-like (no file position at all)
223283  */
224284 #define FOPEN_DIRECT_IO		(1 << 0)
225285 #define FOPEN_KEEP_CACHE	(1 << 1)
226286 #define FOPEN_NONSEEKABLE	(1 << 2)
287
+#define FOPEN_CACHE_DIR		(1 << 3)
227288 #define FOPEN_STREAM		(1 << 4)
228289 
229290 /**
....@@ -251,6 +312,14 @@
251312  * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc
252313  * FUSE_POSIX_ACL: filesystem supports posix acls
253314  * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED
315
+ * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages
316
+ * FUSE_CACHE_SYMLINKS: cache READLINK responses
317
+ * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir
318
+ * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request
319
+ * FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for
320
+ *		       foffset and moffset fields in struct
321
+ *		       fuse_setupmapping_out and fuse_removemapping_one.
322
+ * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts
254323  */
255324 #define FUSE_ASYNC_READ		(1 << 0)
256325 #define FUSE_POSIX_LOCKS	(1 << 1)
....@@ -274,6 +343,13 @@
274343 #define FUSE_HANDLE_KILLPRIV	(1 << 19)
275344 #define FUSE_POSIX_ACL		(1 << 20)
276345 #define FUSE_ABORT_ERROR	(1 << 21)
346
+#define FUSE_MAX_PAGES		(1 << 22)
347
+#define FUSE_CACHE_SYMLINKS	(1 << 23)
348
+#define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
349
+#define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
350
+#define FUSE_MAP_ALIGNMENT	(1 << 26)
351
+#define FUSE_SUBMOUNTS		(1 << 27)
352
+#define FUSE_PASSTHROUGH	(1 << 31)
277353 
278354 /**
279355  * CUSE INIT request/reply flags
....@@ -303,9 +379,11 @@
303379  *
304380  * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
305381  * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
382
+ * FUSE_WRITE_KILL_PRIV: kill suid and sgid bits
306383  */
307384 #define FUSE_WRITE_CACHE	(1 << 0)
308385 #define FUSE_WRITE_LOCKOWNER	(1 << 1)
386
+#define FUSE_WRITE_KILL_PRIV	(1 << 2)
309387 
310388 /**
311389  * Read flags
....@@ -320,6 +398,7 @@
320398  * FUSE_IOCTL_RETRY: retry with new iovecs
321399  * FUSE_IOCTL_32BIT: 32bit ioctl
322400  * FUSE_IOCTL_DIR: is a directory
401
+ * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t)
323402  *
324403  * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
325404  */
....@@ -328,6 +407,7 @@
328407 #define FUSE_IOCTL_RETRY	(1 << 2)
329408 #define FUSE_IOCTL_32BIT	(1 << 3)
330409 #define FUSE_IOCTL_DIR		(1 << 4)
410
+#define FUSE_IOCTL_COMPAT_X32	(1 << 5)
331411 
332412 #define FUSE_IOCTL_MAX_IOV	256
333413 
....@@ -338,55 +418,76 @@
338418  */
339419 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
340420 
421
+/**
422
+ * Fsync flags
423
+ *
424
+ * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
425
+ */
426
+#define FUSE_FSYNC_FDATASYNC	(1 << 0)
427
+
428
+/**
429
+ * fuse_attr flags
430
+ *
431
+ * FUSE_ATTR_SUBMOUNT: Object is a submount root
432
+ */
433
+#define FUSE_ATTR_SUBMOUNT      (1 << 0)
434
+
341435 enum fuse_opcode {
342
-	FUSE_LOOKUP	   = 1,
343
-	FUSE_FORGET	   = 2,  /* no reply */
344
-	FUSE_GETATTR	   = 3,
345
-	FUSE_SETATTR	   = 4,
346
-	FUSE_READLINK	   = 5,
347
-	FUSE_SYMLINK	   = 6,
348
-	FUSE_MKNOD	   = 8,
349
-	FUSE_MKDIR	   = 9,
350
-	FUSE_UNLINK	   = 10,
351
-	FUSE_RMDIR	   = 11,
352
-	FUSE_RENAME	   = 12,
353
-	FUSE_LINK	   = 13,
354
-	FUSE_OPEN	   = 14,
355
-	FUSE_READ	   = 15,
356
-	FUSE_WRITE	   = 16,
357
-	FUSE_STATFS	   = 17,
358
-	FUSE_RELEASE       = 18,
359
-	FUSE_FSYNC         = 20,
360
-	FUSE_SETXATTR      = 21,
361
-	FUSE_GETXATTR      = 22,
362
-	FUSE_LISTXATTR     = 23,
363
-	FUSE_REMOVEXATTR   = 24,
364
-	FUSE_FLUSH         = 25,
365
-	FUSE_INIT          = 26,
366
-	FUSE_OPENDIR       = 27,
367
-	FUSE_READDIR       = 28,
368
-	FUSE_RELEASEDIR    = 29,
369
-	FUSE_FSYNCDIR      = 30,
370
-	FUSE_GETLK         = 31,
371
-	FUSE_SETLK         = 32,
372
-	FUSE_SETLKW        = 33,
373
-	FUSE_ACCESS        = 34,
374
-	FUSE_CREATE        = 35,
375
-	FUSE_INTERRUPT     = 36,
376
-	FUSE_BMAP          = 37,
377
-	FUSE_DESTROY       = 38,
378
-	FUSE_IOCTL         = 39,
379
-	FUSE_POLL          = 40,
380
-	FUSE_NOTIFY_REPLY  = 41,
381
-	FUSE_BATCH_FORGET  = 42,
382
-	FUSE_FALLOCATE     = 43,
383
-	FUSE_READDIRPLUS   = 44,
384
-	FUSE_RENAME2       = 45,
385
-	FUSE_LSEEK         = 46,
386
-	FUSE_CANONICAL_PATH= 2016,
436
+	FUSE_LOOKUP		= 1,
437
+	FUSE_FORGET		= 2,  /* no reply */
438
+	FUSE_GETATTR		= 3,
439
+	FUSE_SETATTR		= 4,
440
+	FUSE_READLINK		= 5,
441
+	FUSE_SYMLINK		= 6,
442
+	FUSE_MKNOD		= 8,
443
+	FUSE_MKDIR		= 9,
444
+	FUSE_UNLINK		= 10,
445
+	FUSE_RMDIR		= 11,
446
+	FUSE_RENAME		= 12,
447
+	FUSE_LINK		= 13,
448
+	FUSE_OPEN		= 14,
449
+	FUSE_READ		= 15,
450
+	FUSE_WRITE		= 16,
451
+	FUSE_STATFS		= 17,
452
+	FUSE_RELEASE		= 18,
453
+	FUSE_FSYNC		= 20,
454
+	FUSE_SETXATTR		= 21,
455
+	FUSE_GETXATTR		= 22,
456
+	FUSE_LISTXATTR		= 23,
457
+	FUSE_REMOVEXATTR	= 24,
458
+	FUSE_FLUSH		= 25,
459
+	FUSE_INIT		= 26,
460
+	FUSE_OPENDIR		= 27,
461
+	FUSE_READDIR		= 28,
462
+	FUSE_RELEASEDIR		= 29,
463
+	FUSE_FSYNCDIR		= 30,
464
+	FUSE_GETLK		= 31,
465
+	FUSE_SETLK		= 32,
466
+	FUSE_SETLKW		= 33,
467
+	FUSE_ACCESS		= 34,
468
+	FUSE_CREATE		= 35,
469
+	FUSE_INTERRUPT		= 36,
470
+	FUSE_BMAP		= 37,
471
+	FUSE_DESTROY		= 38,
472
+	FUSE_IOCTL		= 39,
473
+	FUSE_POLL		= 40,
474
+	FUSE_NOTIFY_REPLY	= 41,
475
+	FUSE_BATCH_FORGET	= 42,
476
+	FUSE_FALLOCATE		= 43,
477
+	FUSE_READDIRPLUS	= 44,
478
+	FUSE_RENAME2		= 45,
479
+	FUSE_LSEEK		= 46,
480
+	FUSE_COPY_FILE_RANGE	= 47,
481
+	FUSE_SETUPMAPPING	= 48,
482
+	FUSE_REMOVEMAPPING	= 49,
483
+	FUSE_CANONICAL_PATH	= 2016,
387484 
388485 	/* CUSE specific operations */
389
-	CUSE_INIT          = 4096,
486
+	CUSE_INIT		= 4096,
487
+
488
+	/* Reserved opcodes: helpful to detect structure endian-ness */
489
+	CUSE_INIT_BSWAP_RESERVED	= 1048576,	/* CUSE_INIT << 8 */
490
+	FUSE_INIT_BSWAP_RESERVED	= 436207616,	/* FUSE_INIT << 24 */
390491 };
391492 
392493 enum fuse_notify_code {
....@@ -506,7 +607,7 @@
506607 struct fuse_open_out {
507608 	uint64_t	fh;
508609 	uint32_t	open_flags;
509
-	uint32_t	padding;
610
+	uint32_t	passthrough_fh;
510611 };
511612 
512613 struct fuse_release_in {
....@@ -613,7 +714,9 @@
613714 	uint16_t	congestion_threshold;
614715 	uint32_t	max_write;
615716 	uint32_t	time_gran;
616
-	uint32_t	unused[9];
717
+	uint16_t	max_pages;
718
+	uint16_t	map_alignment;
719
+	uint32_t	unused[8];
617720 };
618721 
619722 #define CUSE_INIT_INFO_MAX 4096
....@@ -782,7 +885,11 @@
782885 };
783886 
784887 /* Device ioctls: */
785
-#define FUSE_DEV_IOC_CLONE	_IOR(229, 0, uint32_t)
888
+#define FUSE_DEV_IOC_MAGIC		229
889
+#define FUSE_DEV_IOC_CLONE		_IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t)
890
+/* 127 is reserved for the V1 interface implementation in Android (deprecated) */
891
+/* 126 is reserved for the V2 interface implementation in Android */
892
+#define FUSE_DEV_IOC_PASSTHROUGH_OPEN	_IOW(FUSE_DEV_IOC_MAGIC, 126, __u32)
786893 
787894 struct fuse_lseek_in {
788895 	uint64_t	fh;
....@@ -795,4 +902,44 @@
795902 	uint64_t	offset;
796903 };
797904 
905
+struct fuse_copy_file_range_in {
906
+	uint64_t	fh_in;
907
+	uint64_t	off_in;
908
+	uint64_t	nodeid_out;
909
+	uint64_t	fh_out;
910
+	uint64_t	off_out;
911
+	uint64_t	len;
912
+	uint64_t	flags;
913
+};
914
+
915
+#define FUSE_SETUPMAPPING_FLAG_WRITE (1ull << 0)
916
+#define FUSE_SETUPMAPPING_FLAG_READ (1ull << 1)
917
+struct fuse_setupmapping_in {
918
+	/* An already open handle */
919
+	uint64_t	fh;
920
+	/* Offset into the file to start the mapping */
921
+	uint64_t	foffset;
922
+	/* Length of mapping required */
923
+	uint64_t	len;
924
+	/* Flags, FUSE_SETUPMAPPING_FLAG_* */
925
+	uint64_t	flags;
926
+	/* Offset in Memory Window */
927
+	uint64_t	moffset;
928
+};
929
+
930
+struct fuse_removemapping_in {
931
+	/* number of fuse_removemapping_one follows */
932
+	uint32_t        count;
933
+};
934
+
935
+struct fuse_removemapping_one {
936
+	/* Offset into the dax window start the unmapping */
937
+	uint64_t        moffset;
938
+	/* Length of mapping required */
939
+	uint64_t	len;
940
+};
941
+
942
+#define FUSE_REMOVEMAPPING_MAX_ENTRY   \
943
+		(PAGE_SIZE / sizeof(struct fuse_removemapping_one))
944
+
798945 #endif /* _LINUX_FUSE_H */