puffs_msgif.h revision 1.69
1 /* $NetBSD: puffs_msgif.h,v 1.69 2010/01/07 22:45:31 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006, 2007 Antti Kantee. All Rights Reserved. 5 * 6 * Development of this software was supported by the 7 * Google Summer of Code program and the Ulla Tuominen Foundation. 8 * The Google SoC project was mentored by Bill Studenmund. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 20 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef _FS_PUFFS_PUFFS_MSGIF_H_ 33 #define _FS_PUFFS_PUFFS_MSGIF_H_ 34 35 #include <sys/param.h> 36 #include <sys/time.h> 37 #include <sys/ioccom.h> 38 #include <sys/uio.h> 39 #include <sys/vnode.h> 40 #include <sys/ucred.h> 41 #include <sys/statvfs.h> 42 #include <sys/dirent.h> 43 #include <sys/fcntl.h> 44 45 #include <dev/putter/putter.h> 46 47 #include <uvm/uvm_prot.h> 48 49 #define PUFFSOP_VFS 0x01 /* kernel-> */ 50 #define PUFFSOP_VN 0x02 /* kernel-> */ 51 #define PUFFSOP_CACHE 0x03 /* only kernel-> */ 52 #define PUFFSOP_ERROR 0x04 /* only kernel-> */ 53 #define PUFFSOP_FLUSH 0x05 /* ->kernel */ 54 #define PUFFSOP_SUSPEND 0x06 /* ->kernel */ 55 #define PUFFSOP_UNMOUNT 0x07 /* ->kernel */ 56 57 #define PUFFSOPFLAG_FAF 0x10 /* fire-and-forget */ 58 #define PUFFSOPFLAG_ISRESPONSE 0x20 /* req is actually a resp */ 59 60 #define PUFFSOP_OPCMASK 0x07 61 #define PUFFSOP_OPCLASS(a) ((a) & PUFFSOP_OPCMASK) 62 #define PUFFSOP_WANTREPLY(a) (((a) & PUFFSOPFLAG_FAF) == 0) 63 64 /* XXX: we don't need everything */ 65 enum { 66 PUFFS_VFS_MOUNT, PUFFS_VFS_START, PUFFS_VFS_UNMOUNT, 67 PUFFS_VFS_ROOT, PUFFS_VFS_STATVFS, PUFFS_VFS_SYNC, 68 PUFFS_VFS_VGET, PUFFS_VFS_FHTOVP, PUFFS_VFS_VPTOFH, 69 PUFFS_VFS_INIT, PUFFS_VFS_DONE, PUFFS_VFS_SNAPSHOT, 70 PUFFS_VFS_EXTATTCTL, PUFFS_VFS_SUSPEND 71 }; 72 #define PUFFS_VFS_MAX PUFFS_VFS_EXTATTCTL 73 74 /* moreXXX: we don't need everything here either */ 75 enum { 76 PUFFS_VN_LOOKUP, PUFFS_VN_CREATE, PUFFS_VN_MKNOD, 77 PUFFS_VN_OPEN, PUFFS_VN_CLOSE, PUFFS_VN_ACCESS, 78 PUFFS_VN_GETATTR, PUFFS_VN_SETATTR, PUFFS_VN_READ, 79 PUFFS_VN_WRITE, PUFFS_VN_IOCTL, PUFFS_VN_FCNTL, 80 PUFFS_VN_POLL, PUFFS_VN_KQFILTER, PUFFS_VN_REVOKE, 81 PUFFS_VN_MMAP, PUFFS_VN_FSYNC, PUFFS_VN_SEEK, 82 PUFFS_VN_REMOVE, PUFFS_VN_LINK, PUFFS_VN_RENAME, 83 PUFFS_VN_MKDIR, PUFFS_VN_RMDIR, PUFFS_VN_SYMLINK, 84 PUFFS_VN_READDIR, PUFFS_VN_READLINK, PUFFS_VN_ABORTOP, 85 PUFFS_VN_INACTIVE, PUFFS_VN_RECLAIM, PUFFS_VN_LOCK, 86 PUFFS_VN_UNLOCK, PUFFS_VN_BMAP, PUFFS_VN_STRATEGY, 87 PUFFS_VN_PRINT, PUFFS_VN_ISLOCKED, PUFFS_VN_PATHCONF, 88 PUFFS_VN_ADVLOCK, PUFFS_VN_LEASE, PUFFS_VN_WHITEOUT, 89 PUFFS_VN_GETPAGES, PUFFS_VN_PUTPAGES, PUFFS_VN_GETEXTATTR, 90 PUFFS_VN_LISTEXTATTR, PUFFS_VN_OPENEXTATTR, PUFFS_VN_DELETEEXTATTR, 91 PUFFS_VN_SETEXTATTR 92 }; 93 #define PUFFS_VN_MAX PUFFS_VN_SETEXTATTR 94 95 /* 96 * These signal invalid parameters the file system returned. 97 */ 98 enum { 99 PUFFS_ERR_MAKENODE, PUFFS_ERR_LOOKUP, PUFFS_ERR_READDIR, 100 PUFFS_ERR_READLINK, PUFFS_ERR_READ, PUFFS_ERR_WRITE, 101 PUFFS_ERR_VPTOFH, PUFFS_ERR_ERROR 102 }; 103 #define PUFFS_ERR_MAX PUFFS_ERR_VPTOFH 104 105 #define PUFFSDEVELVERS 0x80000000 106 #define PUFFSVERSION 29 107 #define PUFFSNAMESIZE 32 108 109 #define PUFFS_TYPEPREFIX "puffs|" 110 111 #define PUFFS_TYPELEN (_VFS_NAMELEN - (sizeof(PUFFS_TYPEPREFIX)+1)) 112 #define PUFFS_NAMELEN (_VFS_MNAMELEN-1) 113 114 /* 115 * Just a weak typedef for code clarity. Additionally, we have a 116 * more appropriate vanity type for puffs: 117 * <uep> it should be croissant, not cookie. 118 */ 119 typedef void *puffs_cookie_t; 120 typedef puffs_cookie_t puffs_croissant_t; 121 122 struct puffs_kargs { 123 unsigned int pa_vers; 124 int pa_fd; 125 126 uint32_t pa_flags; 127 128 size_t pa_maxmsglen; 129 int pa_nhashbuckets; 130 131 size_t pa_fhsize; 132 int pa_fhflags; 133 134 puffs_cookie_t pa_root_cookie; 135 enum vtype pa_root_vtype; 136 voff_t pa_root_vsize; 137 dev_t pa_root_rdev; 138 139 struct statvfs pa_svfsb; 140 141 char pa_typename[_VFS_NAMELEN]; 142 char pa_mntfromname[_VFS_MNAMELEN]; 143 144 uint8_t pa_vnopmask[PUFFS_VN_MAX]; 145 }; 146 #define PUFFS_KFLAG_NOCACHE_NAME 0x01 /* don't use name cache */ 147 #define PUFFS_KFLAG_NOCACHE_PAGE 0x02 /* don't use page cache */ 148 #define PUFFS_KFLAG_NOCACHE 0x03 /* no cache whatsoever */ 149 #define PUFFS_KFLAG_ALLOPS 0x04 /* ignore pa_vnopmask */ 150 #define PUFFS_KFLAG_WTCACHE 0x08 /* write-through page cache */ 151 #define PUFFS_KFLAG_IAONDEMAND 0x10 /* inactive only on demand */ 152 #define PUFFS_KFLAG_LOOKUP_FULLPNBUF 0x20 /* full pnbuf in lookup */ 153 #define PUFFS_KFLAG_MASK 0x3f 154 155 #define PUFFS_FHFLAG_DYNAMIC 0x01 156 #define PUFFS_FHFLAG_NFSV2 0x02 157 #define PUFFS_FHFLAG_NFSV3 0x04 158 #define PUFFS_FHFLAG_PROTOMASK 0x06 159 #define PUFFS_FHFLAG_PASSTHROUGH 0x08 160 #define PUFFS_FHFLAG_MASK 0x0f 161 162 #define PUFFS_FHSIZE_MAX 1020 /* XXX: FHANDLE_SIZE_MAX - 4 */ 163 164 struct puffs_req { 165 struct putter_hdr preq_pth; 166 167 uint64_t preq_id; 168 puffs_cookie_t preq_cookie; 169 170 uint16_t preq_opclass; 171 uint16_t preq_optype; 172 int preq_rv; 173 174 uint32_t preq_setbacks; 175 176 /* Who is making the call? Eventually host id is also needed. */ 177 pid_t preq_pid; 178 lwpid_t preq_lid; 179 180 /* 181 * the following helper pads the struct size to md alignment 182 * multiple (should size_t not cut it). it makes sure that 183 * whatever comes after this struct is aligned 184 */ 185 size_t preq_buflen; 186 uint8_t preq_buf[0] __aligned(ALIGNBYTES+1); 187 }; 188 189 #define PUFFS_SETBACK_INACT_N1 0x01 /* set VOP_INACTIVE for node 1 */ 190 #define PUFFS_SETBACK_INACT_N2 0x02 /* set VOP_INACTIVE for node 2 */ 191 #define PUFFS_SETBACK_NOREF_N1 0x04 /* set pn PN_NOREFS for node 1 */ 192 #define PUFFS_SETBACK_NOREF_N2 0x08 /* set pn PN_NOREFS for node 2 */ 193 #define PUFFS_SETBACK_MASK 0x0f 194 195 /* 196 * Flush operation. This can be used to invalidate: 197 * 1) name cache for one node 198 * 2) name cache for all children 199 * 3) name cache for the entire mount 200 * 4) page cache for a set of ranges in one node 201 * 5) page cache for one entire node 202 * 203 * It can be used to flush: 204 * 1) page cache for a set of ranges in one node 205 * 2) page cache for one entire node 206 */ 207 208 /* XXX: needs restructuring */ 209 struct puffs_flush { 210 struct puffs_req pf_req; 211 212 puffs_cookie_t pf_cookie; 213 214 int pf_op; 215 off_t pf_start; 216 off_t pf_end; 217 }; 218 #define PUFFS_INVAL_NAMECACHE_NODE 0 219 #define PUFFS_INVAL_NAMECACHE_DIR 1 220 #define PUFFS_INVAL_NAMECACHE_ALL 2 221 #define PUFFS_INVAL_PAGECACHE_NODE_RANGE 3 222 #define PUFFS_FLUSH_PAGECACHE_NODE_RANGE 4 223 224 /* keep this for now */ 225 #define PUFFSREQSIZEOP _IOR ('p', 1, size_t) 226 227 /* 228 * Credentials for an operation. Can be either struct uucred for 229 * ops called from a credential context or NOCRED/FSCRED for ops 230 * called from within the kernel. It is up to the implementation 231 * if it makes a difference between these two and the super-user. 232 */ 233 struct puffs_kcred { 234 struct uucred pkcr_uuc; 235 uint8_t pkcr_type; 236 uint8_t pkcr_internal; 237 }; 238 #define PUFFCRED_TYPE_UUC 1 239 #define PUFFCRED_TYPE_INTERNAL 2 240 #define PUFFCRED_CRED_NOCRED 1 241 #define PUFFCRED_CRED_FSCRED 2 242 243 /* 244 * 2*MAXPHYS is the max size the system will attempt to copy, 245 * else treated as garbage 246 */ 247 #define PUFFS_MSG_MAXSIZE 2*MAXPHYS 248 #define PUFFS_MSGSTRUCT_MAX 4096 /* XXX: approxkludge */ 249 250 #define PUFFS_TOMOVE(a,b) (MIN((a), b->pmp_msg_maxsize - PUFFS_MSGSTRUCT_MAX)) 251 252 /* puffs struct componentname built by kernel */ 253 struct puffs_kcn { 254 /* args */ 255 uint32_t pkcn_nameiop; /* namei operation */ 256 uint32_t pkcn_flags; /* flags */ 257 258 char pkcn_name[MAXPATHLEN]; /* nulterminated path component */ 259 size_t pkcn_namelen; /* current component length */ 260 size_t pkcn_consume; /* IN: extra chars server ate */ 261 }; 262 263 264 /* 265 * Next come the individual requests. They are all subclassed from 266 * puffs_req and contain request-specific fields in addition. Note 267 * that there are some requests which have to handle arbitrary-length 268 * buffers. 269 * 270 * The division is the following: puffs_req is to be touched only 271 * by generic routines while the other stuff is supposed to be 272 * modified only by specific routines. 273 */ 274 275 /* 276 * aux structures for vfs operations. 277 */ 278 struct puffs_vfsmsg_unmount { 279 struct puffs_req pvfsr_pr; 280 281 int pvfsr_flags; 282 }; 283 284 struct puffs_vfsmsg_statvfs { 285 struct puffs_req pvfsr_pr; 286 287 struct statvfs pvfsr_sb; 288 }; 289 290 struct puffs_vfsmsg_sync { 291 struct puffs_req pvfsr_pr; 292 293 struct puffs_kcred pvfsr_cred; 294 int pvfsr_waitfor; 295 }; 296 297 struct puffs_vfsmsg_fhtonode { 298 struct puffs_req pvfsr_pr; 299 300 void *pvfsr_fhcookie; /* IN */ 301 enum vtype pvfsr_vtype; /* IN */ 302 voff_t pvfsr_size; /* IN */ 303 dev_t pvfsr_rdev; /* IN */ 304 305 size_t pvfsr_dsize; /* OUT */ 306 uint8_t pvfsr_data[0] /* OUT, XXX */ 307 __aligned(ALIGNBYTES+1); 308 }; 309 310 struct puffs_vfsmsg_nodetofh { 311 struct puffs_req pvfsr_pr; 312 313 void *pvfsr_fhcookie; /* OUT */ 314 315 size_t pvfsr_dsize; /* OUT/IN */ 316 uint8_t pvfsr_data[0] /* IN, XXX */ 317 __aligned(ALIGNBYTES+1); 318 }; 319 320 struct puffs_vfsmsg_suspend { 321 struct puffs_req pvfsr_pr; 322 323 int pvfsr_status; 324 }; 325 #define PUFFS_SUSPEND_START 0 326 #define PUFFS_SUSPEND_SUSPENDED 1 327 #define PUFFS_SUSPEND_RESUME 2 328 #define PUFFS_SUSPEND_ERROR 3 329 330 /* 331 * aux structures for vnode operations. 332 */ 333 334 struct puffs_vnmsg_lookup { 335 struct puffs_req pvn_pr; 336 337 struct puffs_kcn pvnr_cn; /* OUT */ 338 struct puffs_kcred pvnr_cn_cred; /* OUT */ 339 340 puffs_cookie_t pvnr_newnode; /* IN */ 341 enum vtype pvnr_vtype; /* IN */ 342 voff_t pvnr_size; /* IN */ 343 dev_t pvnr_rdev; /* IN */ 344 }; 345 346 struct puffs_vnmsg_create { 347 struct puffs_req pvn_pr; 348 349 struct puffs_kcn pvnr_cn; /* OUT */ 350 struct puffs_kcred pvnr_cn_cred; /* OUT */ 351 352 struct vattr pvnr_va; /* OUT */ 353 puffs_cookie_t pvnr_newnode; /* IN */ 354 }; 355 356 struct puffs_vnmsg_mknod { 357 struct puffs_req pvn_pr; 358 359 struct puffs_kcn pvnr_cn; /* OUT */ 360 struct puffs_kcred pvnr_cn_cred; /* OUT */ 361 362 struct vattr pvnr_va; /* OUT */ 363 puffs_cookie_t pvnr_newnode; /* IN */ 364 }; 365 366 struct puffs_vnmsg_open { 367 struct puffs_req pvn_pr; 368 369 struct puffs_kcred pvnr_cred; /* OUT */ 370 int pvnr_mode; /* OUT */ 371 }; 372 373 struct puffs_vnmsg_close { 374 struct puffs_req pvn_pr; 375 376 struct puffs_kcred pvnr_cred; /* OUT */ 377 int pvnr_fflag; /* OUT */ 378 }; 379 380 struct puffs_vnmsg_access { 381 struct puffs_req pvn_pr; 382 383 struct puffs_kcred pvnr_cred; /* OUT */ 384 int pvnr_mode; /* OUT */ 385 }; 386 387 #define puffs_vnmsg_setattr puffs_vnmsg_setgetattr 388 #define puffs_vnmsg_getattr puffs_vnmsg_setgetattr 389 struct puffs_vnmsg_setgetattr { 390 struct puffs_req pvn_pr; 391 392 struct puffs_kcred pvnr_cred; /* OUT */ 393 struct vattr pvnr_va; /* IN/OUT (op depend) */ 394 }; 395 396 #define puffs_vnmsg_read puffs_vnmsg_rw 397 #define puffs_vnmsg_write puffs_vnmsg_rw 398 struct puffs_vnmsg_rw { 399 struct puffs_req pvn_pr; 400 401 struct puffs_kcred pvnr_cred; /* OUT */ 402 off_t pvnr_offset; /* OUT */ 403 size_t pvnr_resid; /* IN/OUT */ 404 int pvnr_ioflag; /* OUT */ 405 406 uint8_t pvnr_data[0]; /* IN/OUT (wr/rd) */ 407 }; 408 409 #define puffs_vnmsg_ioctl puffs_vnreq_fcnioctl 410 #define puffs_vnmsg_fcntl puffs_vnreq_fcnioctl 411 struct puffs_vnmsg_fcnioctl { 412 struct puffs_req pvn_pr; 413 414 struct puffs_kcred pvnr_cred; 415 u_long pvnr_command; 416 pid_t pvnr_pid; 417 int pvnr_fflag; 418 419 void *pvnr_data; 420 size_t pvnr_datalen; 421 int pvnr_copyback; 422 }; 423 424 struct puffs_vnmsg_poll { 425 struct puffs_req pvn_pr; 426 427 int pvnr_events; /* IN/OUT */ 428 }; 429 430 struct puffs_vnmsg_fsync { 431 struct puffs_req pvn_pr; 432 433 struct puffs_kcred pvnr_cred; /* OUT */ 434 off_t pvnr_offlo; /* OUT */ 435 off_t pvnr_offhi; /* OUT */ 436 int pvnr_flags; /* OUT */ 437 }; 438 439 struct puffs_vnmsg_seek { 440 struct puffs_req pvn_pr; 441 442 struct puffs_kcred pvnr_cred; /* OUT */ 443 off_t pvnr_oldoff; /* OUT */ 444 off_t pvnr_newoff; /* OUT */ 445 }; 446 447 struct puffs_vnmsg_remove { 448 struct puffs_req pvn_pr; 449 450 struct puffs_kcn pvnr_cn; /* OUT */ 451 struct puffs_kcred pvnr_cn_cred; /* OUT */ 452 453 puffs_cookie_t pvnr_cookie_targ; /* OUT */ 454 }; 455 456 struct puffs_vnmsg_mkdir { 457 struct puffs_req pvn_pr; 458 459 struct puffs_kcn pvnr_cn; /* OUT */ 460 struct puffs_kcred pvnr_cn_cred; /* OUT */ 461 462 struct vattr pvnr_va; /* OUT */ 463 puffs_cookie_t pvnr_newnode; /* IN */ 464 }; 465 466 struct puffs_vnmsg_rmdir { 467 struct puffs_req pvn_pr; 468 469 struct puffs_kcn pvnr_cn; /* OUT */ 470 struct puffs_kcred pvnr_cn_cred; /* OUT */ 471 472 puffs_cookie_t pvnr_cookie_targ; /* OUT */ 473 }; 474 475 struct puffs_vnmsg_link { 476 struct puffs_req pvn_pr; 477 478 struct puffs_kcn pvnr_cn; /* OUT */ 479 struct puffs_kcred pvnr_cn_cred; /* OUT */ 480 481 puffs_cookie_t pvnr_cookie_targ; /* OUT */ 482 }; 483 484 struct puffs_vnmsg_rename { 485 struct puffs_req pvn_pr; 486 487 struct puffs_kcn pvnr_cn_src; /* OUT */ 488 struct puffs_kcred pvnr_cn_src_cred; /* OUT */ 489 struct puffs_kcn pvnr_cn_targ; /* OUT */ 490 struct puffs_kcred pvnr_cn_targ_cred; /* OUT */ 491 492 puffs_cookie_t pvnr_cookie_src; /* OUT */ 493 puffs_cookie_t pvnr_cookie_targ; /* OUT */ 494 puffs_cookie_t pvnr_cookie_targdir; /* OUT */ 495 }; 496 497 struct puffs_vnmsg_symlink { 498 struct puffs_req pvn_pr; 499 500 struct puffs_kcn pvnr_cn; /* OUT */ 501 struct puffs_kcred pvnr_cn_cred; /* OUT */ 502 503 struct vattr pvnr_va; /* OUT */ 504 puffs_cookie_t pvnr_newnode; /* IN */ 505 char pvnr_link[MAXPATHLEN]; /* OUT */ 506 }; 507 508 struct puffs_vnmsg_readdir { 509 struct puffs_req pvn_pr; 510 511 struct puffs_kcred pvnr_cred; /* OUT */ 512 off_t pvnr_offset; /* IN/OUT */ 513 size_t pvnr_resid; /* IN/OUT */ 514 size_t pvnr_ncookies; /* IN/OUT */ 515 int pvnr_eofflag; /* IN */ 516 517 size_t pvnr_dentoff; /* OUT */ 518 uint8_t pvnr_data[0] /* IN */ 519 __aligned(ALIGNBYTES+1); 520 }; 521 522 struct puffs_vnmsg_readlink { 523 struct puffs_req pvn_pr; 524 525 struct puffs_kcred pvnr_cred; /* OUT */ 526 size_t pvnr_linklen; /* IN */ 527 char pvnr_link[MAXPATHLEN]; /* IN, XXX */ 528 }; 529 530 struct puffs_vnmsg_reclaim { 531 struct puffs_req pvn_pr; 532 }; 533 534 struct puffs_vnmsg_inactive { 535 struct puffs_req pvn_pr; 536 }; 537 538 struct puffs_vnmsg_print { 539 struct puffs_req pvn_pr; 540 541 /* empty */ 542 }; 543 544 struct puffs_vnmsg_pathconf { 545 struct puffs_req pvn_pr; 546 547 int pvnr_name; /* OUT */ 548 int pvnr_retval; /* IN */ 549 }; 550 551 struct puffs_vnmsg_advlock { 552 struct puffs_req pvn_pr; 553 554 struct flock pvnr_fl; /* OUT */ 555 void *pvnr_id; /* OUT */ 556 int pvnr_op; /* OUT */ 557 int pvnr_flags; /* OUT */ 558 }; 559 560 struct puffs_vnmsg_mmap { 561 struct puffs_req pvn_pr; 562 563 vm_prot_t pvnr_prot; /* OUT */ 564 struct puffs_kcred pvnr_cred; /* OUT */ 565 }; 566 567 struct puffs_vnmsg_abortop { 568 struct puffs_req pvn_pr; 569 570 struct puffs_kcn pvnr_cn; /* OUT */ 571 struct puffs_kcred pvnr_cn_cred; /* OUT */ 572 }; 573 574 575 /* 576 * For cache reports. Everything is always out-out-out, no replies 577 */ 578 579 struct puffs_cacherun { 580 off_t pcache_runstart; 581 off_t pcache_runend; 582 }; 583 584 /* cache info. old used for write now */ 585 struct puffs_cacheinfo { 586 struct puffs_req pcache_pr; 587 588 int pcache_type; 589 size_t pcache_nruns; 590 struct puffs_cacherun pcache_runs[0]; 591 }; 592 #define PCACHE_TYPE_READ 0 593 #define PCACHE_TYPE_WRITE 1 594 595 /* 596 * Error notification. Always outgoing, no response, no remorse. 597 */ 598 struct puffs_error { 599 struct puffs_req perr_pr; 600 601 int perr_error; 602 char perr_str[256]; 603 }; 604 605 #endif /* _FS_PUFFS_PUFFS_MSGIF_H_ */ 606
Indexes created Wed Oct 01 07:09:59 GMT 2025