There are several FUSE filesystems that can implement server-side copy or other efficient copy/duplication/clone methods. The copy_file_range() syscall is the standard interface that users have access to while not depending on external libraries that bypass FUSE.
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| @@ -116,6 +116,9 @@ · 115 unmodified lines | |||
| 116 | * | 116 | * |
| 117 | * 7.27 | 117 | * 7.27 |
| 118 | * - add FUSE_ABORT_ERROR | 118 | * - add FUSE_ABORT_ERROR |
| 119 | * | ||
| 120 | * 7.28 | ||
| 121 | * - add FUSE_COPY_FILE_RANGE | ||
| 119 | */ | 122 | */ |
| 120 | 123 | ||
| 121 | #ifndef _LINUX_FUSE_H | 124 | #ifndef _LINUX_FUSE_H |
| @@ -151,7 +154,7 @@ · 29 unmodified lines | |||
| 151 | #define FUSE_KERNEL_VERSION 7 | 154 | #define FUSE_KERNEL_VERSION 7 |
| 152 | 155 | ||
| 153 | /** Minor version number of this interface */ | 156 | /** Minor version number of this interface */ |
| 154 | #define FUSE_KERNEL_MINOR_VERSION 27 | 157 | #define FUSE_KERNEL_MINOR_VERSION 28 |
| 155 | 158 | ||
| 156 | /** The node ID of the root inode */ | 159 | /** The node ID of the root inode */ |
| 157 | #define FUSE_ROOT_ID 1 | 160 | #define FUSE_ROOT_ID 1 |
| @@ -337,53 +340,54 @@ struct fuse_file_lock { · 179 unmodified lines | |||
| 337 | #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) | 340 | #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) |
| 338 | 341 | ||
| 339 | enum fuse_opcode { | 342 | enum fuse_opcode { |
| 340 | FUSE_LOOKUP = 1, | 343 | FUSE_LOOKUP = 1, |
| 341 | FUSE_FORGET = 2, /* no reply */ | 344 | FUSE_FORGET = 2, /* no reply */ |
| 342 | FUSE_GETATTR = 3, | 345 | FUSE_GETATTR = 3, |
| 343 | FUSE_SETATTR = 4, | 346 | FUSE_SETATTR = 4, |
| 344 | FUSE_READLINK = 5, | 347 | FUSE_READLINK = 5, |
| 345 | FUSE_SYMLINK = 6, | 348 | FUSE_SYMLINK = 6, |
| 346 | FUSE_MKNOD = 8, | 349 | FUSE_MKNOD = 8, |
| 347 | FUSE_MKDIR = 9, | 350 | FUSE_MKDIR = 9, |
| 348 | FUSE_UNLINK = 10, | 351 | FUSE_UNLINK = 10, |
| 349 | FUSE_RMDIR = 11, | 352 | FUSE_RMDIR = 11, |
| 350 | FUSE_RENAME = 12, | 353 | FUSE_RENAME = 12, |
| 351 | FUSE_LINK = 13, | 354 | FUSE_LINK = 13, |
| 352 | FUSE_OPEN = 14, | 355 | FUSE_OPEN = 14, |
| 353 | FUSE_READ = 15, | 356 | FUSE_READ = 15, |
| 354 | FUSE_WRITE = 16, | 357 | FUSE_WRITE = 16, |
| 355 | FUSE_STATFS = 17, | 358 | FUSE_STATFS = 17, |
| 356 | FUSE_RELEASE = 18, | 359 | FUSE_RELEASE = 18, |
| 357 | FUSE_FSYNC = 20, | 360 | FUSE_FSYNC = 20, |
| 358 | FUSE_SETXATTR = 21, | 361 | FUSE_SETXATTR = 21, |
| 359 | FUSE_GETXATTR = 22, | 362 | FUSE_GETXATTR = 22, |
| 360 | FUSE_LISTXATTR = 23, | 363 | FUSE_LISTXATTR = 23, |
| 361 | FUSE_REMOVEXATTR = 24, | 364 | FUSE_REMOVEXATTR = 24, |
| 362 | FUSE_FLUSH = 25, | 365 | FUSE_FLUSH = 25, |
| 363 | FUSE_INIT = 26, | 366 | FUSE_INIT = 26, |
| 364 | FUSE_OPENDIR = 27, | 367 | FUSE_OPENDIR = 27, |
| 365 | FUSE_READDIR = 28, | 368 | FUSE_READDIR = 28, |
| 366 | FUSE_RELEASEDIR = 29, | 369 | FUSE_RELEASEDIR = 29, |
| 367 | FUSE_FSYNCDIR = 30, | 370 | FUSE_FSYNCDIR = 30, |
| 368 | FUSE_GETLK = 31, | 371 | FUSE_GETLK = 31, |
| 369 | FUSE_SETLK = 32, | 372 | FUSE_SETLK = 32, |
| 370 | FUSE_SETLKW = 33, | 373 | FUSE_SETLKW = 33, |
| 371 | FUSE_ACCESS = 34, | 374 | FUSE_ACCESS = 34, |
| 372 | FUSE_CREATE = 35, | 375 | FUSE_CREATE = 35, |
| 373 | FUSE_INTERRUPT = 36, | 376 | FUSE_INTERRUPT = 36, |
| 374 | FUSE_BMAP = 37, | 377 | FUSE_BMAP = 37, |
| 375 | FUSE_DESTROY = 38, | 378 | FUSE_DESTROY = 38, |
| 376 | FUSE_IOCTL = 39, | 379 | FUSE_IOCTL = 39, |
| 377 | FUSE_POLL = 40, | 380 | FUSE_POLL = 40, |
| 378 | FUSE_NOTIFY_REPLY = 41, | 381 | FUSE_NOTIFY_REPLY = 41, |
| 379 | FUSE_BATCH_FORGET = 42, | 382 | FUSE_BATCH_FORGET = 42, |
| 380 | FUSE_FALLOCATE = 43, | 383 | FUSE_FALLOCATE = 43, |
| 381 | FUSE_READDIRPLUS = 44, | 384 | FUSE_READDIRPLUS = 44, |
| 382 | FUSE_RENAME2 = 45, | 385 | FUSE_RENAME2 = 45, |
| 383 | FUSE_LSEEK = 46, | 386 | FUSE_LSEEK = 46, |
| 387 | FUSE_COPY_FILE_RANGE = 47, | ||
| 384 | 388 | ||
| 385 | /* CUSE specific operations */ | 389 | /* CUSE specific operations */ |
| 386 | CUSE_INIT = 4096, | 390 | CUSE_INIT = 4096, |
| 387 | }; | 391 | }; |
| 388 | 392 | ||
| 389 | enum fuse_notify_code { | 393 | enum fuse_notify_code { |
| @@ -792,4 +796,14 @@ struct fuse_lseek_out { · 402 unmodified lines | |||
| 792 | uint64_t offset; | 796 | uint64_t offset; |
| 793 | }; | 797 | }; |
| 794 | 798 | ||
| 799 | struct fuse_copy_file_range_in { | ||
| 800 | uint64_t fh_in; | ||
| 801 | uint64_t off_in; | ||
| 802 | uint64_t nodeid_out; | ||
| 803 | uint64_t fh_out; | ||
| 804 | uint64_t off_out; | ||
| 805 | uint64_t len; | ||
| 806 | uint64_t flags; | ||
| 807 | }; | ||
| 808 | |||
| 795 | #endif /* _LINUX_FUSE_H */ | 809 | #endif /* _LINUX_FUSE_H */ |