coda_venus.c revision 1.20
1 /* $NetBSD: coda_venus.c,v 1.20 2006/03/15 14:30:56 gdt Exp $ */ 2 3 /* 4 * 5 * Coda: an Experimental Distributed File System 6 * Release 3.1 7 * 8 * Copyright (c) 1987-1998 Carnegie Mellon University 9 * All Rights Reserved 10 * 11 * Permission to use, copy, modify and distribute this software and its 12 * documentation is hereby granted, provided that both the copyright 13 * notice and this permission notice appear in all copies of the 14 * software, derivative works or modified versions, and any portions 15 * thereof, and that both notices appear in supporting documentation, and 16 * that credit is given to Carnegie Mellon University in all documents 17 * and publicity pertaining to direct or indirect use of this code or its 18 * derivatives. 19 * 20 * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS, 21 * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS 22 * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON 23 * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER 24 * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF 25 * ANY DERIVATIVE WORK. 26 * 27 * Carnegie Mellon encourages users of this software to return any 28 * improvements or extensions that they make, and to grant Carnegie 29 * Mellon the rights to redistribute these changes without encumbrance. 30 * 31 * @(#) coda/coda_venus.c,v 1.1.1.1 1998/08/29 21:26:45 rvb Exp $ 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: coda_venus.c,v 1.20 2006/03/15 14:30:56 gdt Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/malloc.h> 40 #include <sys/proc.h> 41 #include <sys/select.h> 42 #include <sys/ioctl.h> 43 /* for CNV_OFLAGS below */ 44 #include <sys/fcntl.h> 45 46 #include <coda/coda.h> 47 #include <coda/cnode.h> 48 #include <coda/coda_venus.h> 49 #include <coda/coda_pioctl.h> 50 51 #ifdef _KERNEL_OPT 52 #include "opt_coda_compat.h" 53 #endif 54 55 /* 56 * Isize and Osize are the sizes of the input and output arguments. 57 * SEMI-INVARIANT: name##_size (e.g. coda_readlink_size) is the max of 58 * the input and output. This invariant is not well maintained, but 59 * should be true after ALLOC_*. Isize is modified after allocation 60 * by STRCPY below - this is in general unsafe and needs fixing. 61 */ 62 63 #define DECL_NO_IN(name) \ 64 struct coda_in_hdr *inp; \ 65 struct name ## _out *outp; \ 66 int name ## _size = sizeof (struct coda_in_hdr); \ 67 int Isize = sizeof (struct coda_in_hdr); \ 68 int Osize = sizeof (struct name ## _out); \ 69 int error 70 71 #define DECL(name) \ 72 struct name ## _in *inp; \ 73 struct name ## _out *outp; \ 74 int name ## _size = sizeof (struct name ## _in); \ 75 int Isize = sizeof (struct name ## _in); \ 76 int Osize = sizeof (struct name ## _out); \ 77 int error 78 79 #define DECL_NO_OUT(name) \ 80 struct name ## _in *inp; \ 81 struct coda_out_hdr *outp; \ 82 int name ## _size = sizeof (struct name ## _in); \ 83 int Isize = sizeof (struct name ## _in); \ 84 int Osize = sizeof (struct coda_out_hdr); \ 85 int error 86 87 #define ALLOC_NO_IN(name) \ 88 if (Osize > name ## _size) \ 89 name ## _size = Osize; \ 90 CODA_ALLOC(inp, struct coda_in_hdr *, name ## _size);\ 91 outp = (struct name ## _out *) inp 92 93 #define ALLOC(name) \ 94 if (Osize > name ## _size) \ 95 name ## _size = Osize; \ 96 CODA_ALLOC(inp, struct name ## _in *, name ## _size);\ 97 outp = (struct name ## _out *) inp 98 99 #define ALLOC_NO_OUT(name) \ 100 if (Osize > name ## _size) \ 101 name ## _size = Osize; \ 102 CODA_ALLOC(inp, struct name ## _in *, name ## _size);\ 103 outp = (struct coda_out_hdr *) inp 104 105 #define STRCPY(struc, name, len) \ 106 bcopy(name, (char *)inp + (int)inp->struc, len); \ 107 ((char*)inp + (int)inp->struc)[len++] = 0; \ 108 Isize += len 109 /* XXX verify that Isize has not overrun available storage */ 110 111 #ifdef CODA_COMPAT_5 112 113 #define INIT_IN(in, op, ident, p) \ 114 (in)->opcode = (op); \ 115 (in)->pid = p ? p->p_pid : -1; \ 116 (in)->pgid = p ? p->p_pgid : -1; \ 117 (in)->sid = (p && p->p_session && p->p_session->s_leader) ? \ 118 (p->p_session->s_leader->p_pid) : -1; \ 119 KASSERT(cred != NULL); \ 120 KASSERT(cred != FSCRED); \ 121 if (ident != NOCRED) { \ 122 (in)->cred.cr_uid = ident->cr_uid; \ 123 (in)->cred.cr_groupid = ident->cr_gid; \ 124 } else { \ 125 memset(&((in)->cred), 0, sizeof(struct coda_cred)); \ 126 (in)->cred.cr_uid = -1; \ 127 (in)->cred.cr_groupid = -1; \ 128 } \ 129 130 #else 131 132 #define INIT_IN(in, op, ident, p) \ 133 (in)->opcode = (op); \ 134 (in)->pid = p ? p->p_pid : -1; \ 135 (in)->pgid = p ? p->p_pgid : -1; \ 136 KASSERT(cred != NULL); \ 137 KASSERT(cred != FSCRED); \ 138 if (ident != NOCRED) { \ 139 (in)->uid = ident->cr_uid; \ 140 } else { \ 141 (in)->uid = -1; \ 142 } \ 143 144 #endif 145 146 #define INIT_IN_L(in, op, ident, l) \ 147 INIT_IN(in, op, ident, (l ? l->l_proc : NULL)) 148 149 #define CNV_OFLAG(to, from) \ 150 do { \ 151 to = 0; \ 152 if (from & FREAD) to |= C_O_READ; \ 153 if (from & FWRITE) to |= C_O_WRITE; \ 154 if (from & O_TRUNC) to |= C_O_TRUNC; \ 155 if (from & O_EXCL) to |= C_O_EXCL; \ 156 if (from & O_CREAT) to |= C_O_CREAT; \ 157 } while (/*CONSTCOND*/ 0) 158 159 #define CNV_VV2V_ATTR(top, fromp) \ 160 do { \ 161 (top)->va_type = (fromp)->va_type; \ 162 (top)->va_mode = (fromp)->va_mode; \ 163 (top)->va_nlink = (fromp)->va_nlink; \ 164 (top)->va_uid = (fromp)->va_uid; \ 165 (top)->va_gid = (fromp)->va_gid; \ 166 (top)->va_fsid = VNOVAL; \ 167 (top)->va_fileid = (fromp)->va_fileid; \ 168 (top)->va_size = (fromp)->va_size; \ 169 (top)->va_blocksize = (fromp)->va_blocksize; \ 170 (top)->va_atime = (fromp)->va_atime; \ 171 (top)->va_mtime = (fromp)->va_mtime; \ 172 (top)->va_ctime = (fromp)->va_ctime; \ 173 (top)->va_gen = (fromp)->va_gen; \ 174 (top)->va_flags = (fromp)->va_flags; \ 175 (top)->va_rdev = (fromp)->va_rdev; \ 176 (top)->va_bytes = (fromp)->va_bytes; \ 177 (top)->va_filerev = (fromp)->va_filerev; \ 178 (top)->va_vaflags = VNOVAL; \ 179 (top)->va_spare = VNOVAL; \ 180 } while (/*CONSTCOND*/ 0) 181 182 #define CNV_V2VV_ATTR(top, fromp) \ 183 do { \ 184 (top)->va_type = (fromp)->va_type; \ 185 (top)->va_mode = (fromp)->va_mode; \ 186 (top)->va_nlink = (fromp)->va_nlink; \ 187 (top)->va_uid = (fromp)->va_uid; \ 188 (top)->va_gid = (fromp)->va_gid; \ 189 (top)->va_fileid = (fromp)->va_fileid; \ 190 (top)->va_size = (fromp)->va_size; \ 191 (top)->va_blocksize = (fromp)->va_blocksize; \ 192 (top)->va_atime = (fromp)->va_atime; \ 193 (top)->va_mtime = (fromp)->va_mtime; \ 194 (top)->va_ctime = (fromp)->va_ctime; \ 195 (top)->va_gen = (fromp)->va_gen; \ 196 (top)->va_flags = (fromp)->va_flags; \ 197 (top)->va_rdev = (fromp)->va_rdev; \ 198 (top)->va_bytes = (fromp)->va_bytes; \ 199 (top)->va_filerev = (fromp)->va_filerev; \ 200 } while (/*CONSTCOND*/ 0) 201 202 203 int coda_kernel_version = CODA_KERNEL_VERSION; 204 205 int 206 venus_root(void *mdp, 207 struct ucred *cred, struct proc *p, 208 /*out*/ CodaFid *VFid) 209 { 210 DECL_NO_IN(coda_root); /* sets Isize & Osize */ 211 ALLOC_NO_IN(coda_root); /* sets inp & outp */ 212 213 /* send the open to venus. */ 214 INIT_IN(inp, CODA_ROOT, cred, p); 215 216 error = coda_call(mdp, Isize, &Osize, (char *)inp); 217 if (!error) 218 *VFid = outp->Fid; 219 220 CODA_FREE(inp, coda_root_size); 221 return error; 222 } 223 224 int 225 venus_open(void *mdp, CodaFid *fid, int flag, 226 struct ucred *cred, struct lwp *l, 227 /*out*/ dev_t *dev, ino_t *inode) 228 { 229 int cflag; 230 DECL(coda_open); /* sets Isize & Osize */ 231 ALLOC(coda_open); /* sets inp & outp */ 232 233 /* send the open to venus. */ 234 INIT_IN_L(&inp->ih, CODA_OPEN, cred, l); 235 inp->Fid = *fid; 236 CNV_OFLAG(cflag, flag); 237 inp->flags = cflag; 238 239 error = coda_call(mdp, Isize, &Osize, (char *)inp); 240 KASSERT(outp != NULL); 241 if (!error) { 242 *dev = outp->dev; 243 *inode = outp->inode; 244 } 245 246 CODA_FREE(inp, coda_open_size); 247 return error; 248 } 249 250 int 251 venus_close(void *mdp, CodaFid *fid, int flag, 252 struct ucred *cred, struct lwp *l) 253 { 254 int cflag; 255 DECL_NO_OUT(coda_close); /* sets Isize & Osize */ 256 ALLOC_NO_OUT(coda_close); /* sets inp & outp */ 257 258 INIT_IN_L(&inp->ih, CODA_CLOSE, cred, l); 259 inp->Fid = *fid; 260 CNV_OFLAG(cflag, flag); 261 inp->flags = cflag; 262 263 error = coda_call(mdp, Isize, &Osize, (char *)inp); 264 265 CODA_FREE(inp, coda_close_size); 266 return error; 267 } 268 269 /* 270 * these two calls will not exist!!! the container file is read/written 271 * directly. 272 */ 273 void 274 venus_read(void) 275 { 276 } 277 278 void 279 venus_write(void) 280 { 281 } 282 283 /* 284 * this is a bit sad too. the ioctl's are for the control file, not for 285 * normal files. 286 */ 287 int 288 venus_ioctl(void *mdp, CodaFid *fid, 289 int com, int flag, caddr_t data, 290 struct ucred *cred, struct lwp *l) 291 { 292 DECL(coda_ioctl); /* sets Isize & Osize */ 293 struct PioctlData *iap = (struct PioctlData *)data; 294 int tmp; 295 296 coda_ioctl_size = VC_MAXMSGSIZE; 297 ALLOC(coda_ioctl); /* sets inp & outp */ 298 299 INIT_IN_L(&inp->ih, CODA_IOCTL, cred, l); 300 inp->Fid = *fid; 301 302 /* command was mutated by increasing its size field to reflect the 303 * path and follow args. we need to subtract that out before sending 304 * the command to venus. 305 */ 306 inp->cmd = (com & ~(IOCPARM_MASK << 16)); 307 tmp = ((com >> 16) & IOCPARM_MASK) - sizeof (char *) - sizeof (int); 308 inp->cmd |= (tmp & IOCPARM_MASK) << 16; 309 310 if (iap->vi.in_size < 0 || iap->vi.in_size > VC_MAXMSGSIZE) 311 return (EINVAL); 312 313 inp->rwflag = flag; 314 inp->len = iap->vi.in_size; 315 inp->data = (char *)(sizeof (struct coda_ioctl_in)); 316 317 error = copyin(iap->vi.in, (char*)inp + (int)(long)inp->data, 318 iap->vi.in_size); 319 if (error) { 320 CODA_FREE(inp, coda_ioctl_size); 321 return(error); 322 } 323 324 Osize = VC_MAXMSGSIZE; 325 error = coda_call(mdp, Isize + iap->vi.in_size, &Osize, (char *)inp); 326 327 /* copy out the out buffer. */ 328 if (!error) { 329 if (outp->len > iap->vi.out_size) { 330 error = EINVAL; 331 } else { 332 error = copyout((char *)outp + (int)(long)outp->data, 333 iap->vi.out, iap->vi.out_size); 334 } 335 } 336 337 CODA_FREE(inp, coda_ioctl_size); 338 return error; 339 } 340 341 int 342 venus_getattr(void *mdp, CodaFid *fid, 343 struct ucred *cred, struct lwp *l, 344 /*out*/ struct vattr *vap) 345 { 346 DECL(coda_getattr); /* sets Isize & Osize */ 347 ALLOC(coda_getattr); /* sets inp & outp */ 348 349 /* send the open to venus. */ 350 INIT_IN_L(&inp->ih, CODA_GETATTR, cred, l); 351 inp->Fid = *fid; 352 353 error = coda_call(mdp, Isize, &Osize, (char *)inp); 354 if (!error) { 355 CNV_VV2V_ATTR(vap, &outp->attr); 356 } 357 358 CODA_FREE(inp, coda_getattr_size); 359 return error; 360 } 361 362 int 363 venus_setattr(void *mdp, CodaFid *fid, struct vattr *vap, 364 struct ucred *cred, struct lwp *l) 365 { 366 DECL_NO_OUT(coda_setattr); /* sets Isize & Osize */ 367 ALLOC_NO_OUT(coda_setattr); /* sets inp & outp */ 368 369 /* send the open to venus. */ 370 INIT_IN_L(&inp->ih, CODA_SETATTR, cred, l); 371 inp->Fid = *fid; 372 CNV_V2VV_ATTR(&inp->attr, vap); 373 374 error = coda_call(mdp, Isize, &Osize, (char *)inp); 375 376 CODA_FREE(inp, coda_setattr_size); 377 return error; 378 } 379 380 int 381 venus_access(void *mdp, CodaFid *fid, int mode, 382 struct ucred *cred, struct lwp *l) 383 { 384 DECL_NO_OUT(coda_access); /* sets Isize & Osize */ 385 ALLOC_NO_OUT(coda_access); /* sets inp & outp */ 386 387 /* send the open to venus. */ 388 INIT_IN_L(&inp->ih, CODA_ACCESS, cred, l); 389 inp->Fid = *fid; 390 inp->flags = mode; 391 392 error = coda_call(mdp, Isize, &Osize, (char *)inp); 393 394 CODA_FREE(inp, coda_access_size); 395 return error; 396 } 397 398 int 399 venus_readlink(void *mdp, CodaFid *fid, 400 struct ucred *cred, struct lwp *l, 401 /*out*/ char **str, int *len) 402 { 403 DECL(coda_readlink); /* sets Isize & Osize */ 404 /* XXX coda_readlink_size should not be set here */ 405 coda_readlink_size += CODA_MAXPATHLEN; 406 Osize += CODA_MAXPATHLEN; 407 ALLOC(coda_readlink); /* sets inp & outp */ 408 409 /* send the open to venus. */ 410 INIT_IN_L(&inp->ih, CODA_READLINK, cred, l); 411 inp->Fid = *fid; 412 413 error = coda_call(mdp, Isize, &Osize, (char *)inp); 414 KASSERT(outp != NULL); 415 if (!error) { 416 CODA_ALLOC(*str, char *, outp->count); 417 *len = outp->count; 418 bcopy((char *)outp + (int)(long)outp->data, *str, *len); 419 } 420 421 CODA_FREE(inp, coda_readlink_size); 422 return error; 423 } 424 425 int 426 venus_fsync(void *mdp, CodaFid *fid, 427 struct ucred *cred, struct lwp *l) 428 { 429 DECL_NO_OUT(coda_fsync); /* sets Isize & Osize */ 430 ALLOC_NO_OUT(coda_fsync); /* sets inp & outp */ 431 432 /* send the open to venus. */ 433 INIT_IN_L(&inp->ih, CODA_FSYNC, cred, l); 434 inp->Fid = *fid; 435 436 error = coda_call(mdp, Isize, &Osize, (char *)inp); 437 438 CODA_FREE(inp, coda_fsync_size); 439 return error; 440 } 441 442 int 443 venus_lookup(void *mdp, CodaFid *fid, 444 const char *nm, int len, 445 struct ucred *cred, struct lwp *l, 446 /*out*/ CodaFid *VFid, int *vtype) 447 { 448 DECL(coda_lookup); /* sets Isize & Osize */ 449 coda_lookup_size += len + 1; 450 ALLOC(coda_lookup); /* sets inp & outp */ 451 452 /* send the open to venus. */ 453 INIT_IN_L(&inp->ih, CODA_LOOKUP, cred, l); 454 inp->Fid = *fid; 455 456 /* NOTE: 457 * Between version 1 and version 2 we have added an extra flag field 458 * to this structure. But because the string was at the end and because 459 * of the weird way we represent strings by having the slot point to 460 * where the string characters are in the "heap", we can just slip the 461 * flag parameter in after the string slot pointer and veni that don't 462 * know better won't see this new flag field ... 463 * Otherwise we'd need two different venus_lookup functions. 464 */ 465 inp->name = Isize; 466 inp->flags = CLU_CASE_SENSITIVE; /* doesn't really matter for BSD */ 467 /* This is safe because we preallocated len+1 extra. */ 468 STRCPY(name, nm, len); /* increments Isize */ 469 470 error = coda_call(mdp, Isize, &Osize, (char *)inp); 471 KASSERT(outp != NULL); 472 if (!error) { 473 *VFid = outp->Fid; 474 *vtype = outp->vtype; 475 } 476 477 CODA_FREE(inp, coda_lookup_size); 478 return error; 479 } 480 481 int 482 venus_create(void *mdp, CodaFid *fid, 483 const char *nm, int len, int exclusive, int mode, struct vattr *va, 484 struct ucred *cred, struct lwp *l, 485 /*out*/ CodaFid *VFid, struct vattr *attr) 486 { 487 DECL(coda_create); /* sets Isize & Osize */ 488 coda_create_size += len + 1; 489 ALLOC(coda_create); /* sets inp & outp */ 490 491 /* send the open to venus. */ 492 INIT_IN_L(&inp->ih, CODA_CREATE, cred, l); 493 inp->Fid = *fid; 494 inp->excl = exclusive ? C_O_EXCL : 0; 495 inp->mode = mode<<6; 496 CNV_V2VV_ATTR(&inp->attr, va); 497 498 inp->name = Isize; 499 STRCPY(name, nm, len); /* increments Isize */ 500 501 error = coda_call(mdp, Isize, &Osize, (char *)inp); 502 KASSERT(outp != NULL); 503 if (!error) { 504 *VFid = outp->Fid; 505 CNV_VV2V_ATTR(attr, &outp->attr); 506 } 507 508 CODA_FREE(inp, coda_create_size); 509 return error; 510 } 511 512 int 513 venus_remove(void *mdp, CodaFid *fid, 514 const char *nm, int len, 515 struct ucred *cred, struct lwp *l) 516 { 517 DECL_NO_OUT(coda_remove); /* sets Isize & Osize */ 518 coda_remove_size += len + 1; 519 ALLOC_NO_OUT(coda_remove); /* sets inp & outp */ 520 521 /* send the open to venus. */ 522 INIT_IN_L(&inp->ih, CODA_REMOVE, cred, l); 523 inp->Fid = *fid; 524 525 inp->name = Isize; 526 STRCPY(name, nm, len); /* increments Isize */ 527 528 error = coda_call(mdp, Isize, &Osize, (char *)inp); 529 530 CODA_FREE(inp, coda_remove_size); 531 return error; 532 } 533 534 int 535 venus_link(void *mdp, CodaFid *fid, CodaFid *tfid, 536 const char *nm, int len, 537 struct ucred *cred, struct lwp *l) 538 { 539 DECL_NO_OUT(coda_link); /* sets Isize & Osize */ 540 coda_link_size += len + 1; 541 ALLOC_NO_OUT(coda_link); /* sets inp & outp */ 542 543 /* send the open to venus. */ 544 INIT_IN_L(&inp->ih, CODA_LINK, cred, l); 545 inp->sourceFid = *fid; 546 inp->destFid = *tfid; 547 548 inp->tname = Isize; 549 STRCPY(tname, nm, len); /* increments Isize */ 550 551 error = coda_call(mdp, Isize, &Osize, (char *)inp); 552 553 CODA_FREE(inp, coda_link_size); 554 return error; 555 } 556 557 int 558 venus_rename(void *mdp, CodaFid *fid, CodaFid *tfid, 559 const char *nm, int len, const char *tnm, int tlen, 560 struct ucred *cred, struct lwp *l) 561 { 562 DECL_NO_OUT(coda_rename); /* sets Isize & Osize */ 563 coda_rename_size += len + 1 + tlen + 1; 564 ALLOC_NO_OUT(coda_rename); /* sets inp & outp */ 565 566 /* send the open to venus. */ 567 INIT_IN_L(&inp->ih, CODA_RENAME, cred, l); 568 inp->sourceFid = *fid; 569 inp->destFid = *tfid; 570 571 inp->srcname = Isize; 572 STRCPY(srcname, nm, len); /* increments Isize */ 573 574 inp->destname = Isize; 575 STRCPY(destname, tnm, tlen); /* increments Isize */ 576 577 error = coda_call(mdp, Isize, &Osize, (char *)inp); 578 579 CODA_FREE(inp, coda_rename_size); 580 return error; 581 } 582 583 int 584 venus_mkdir(void *mdp, CodaFid *fid, 585 const char *nm, int len, struct vattr *va, 586 struct ucred *cred, struct lwp *l, 587 /*out*/ CodaFid *VFid, struct vattr *ova) 588 { 589 DECL(coda_mkdir); /* sets Isize & Osize */ 590 coda_mkdir_size += len + 1; 591 ALLOC(coda_mkdir); /* sets inp & outp */ 592 593 /* send the open to venus. */ 594 INIT_IN_L(&inp->ih, CODA_MKDIR, cred, l); 595 inp->Fid = *fid; 596 CNV_V2VV_ATTR(&inp->attr, va); 597 598 inp->name = Isize; 599 STRCPY(name, nm, len); /* increments Isize */ 600 601 error = coda_call(mdp, Isize, &Osize, (char *)inp); 602 KASSERT(outp != NULL); 603 if (!error) { 604 *VFid = outp->Fid; 605 CNV_VV2V_ATTR(ova, &outp->attr); 606 } 607 608 CODA_FREE(inp, coda_mkdir_size); 609 return error; 610 } 611 612 int 613 venus_rmdir(void *mdp, CodaFid *fid, 614 const char *nm, int len, 615 struct ucred *cred, struct lwp *l) 616 { 617 DECL_NO_OUT(coda_rmdir); /* sets Isize & Osize */ 618 coda_rmdir_size += len + 1; 619 ALLOC_NO_OUT(coda_rmdir); /* sets inp & outp */ 620 621 /* send the open to venus. */ 622 INIT_IN_L(&inp->ih, CODA_RMDIR, cred, l); 623 inp->Fid = *fid; 624 625 inp->name = Isize; 626 STRCPY(name, nm, len); /* increments Isize */ 627 628 error = coda_call(mdp, Isize, &Osize, (char *)inp); 629 630 CODA_FREE(inp, coda_rmdir_size); 631 return error; 632 } 633 634 int 635 venus_symlink(void *mdp, CodaFid *fid, 636 const char *lnm, int llen, const char *nm, int len, struct vattr *va, 637 struct ucred *cred, struct lwp *l) 638 { 639 DECL_NO_OUT(coda_symlink); /* sets Isize & Osize */ 640 coda_symlink_size += llen + 1 + len + 1; 641 ALLOC_NO_OUT(coda_symlink); /* sets inp & outp */ 642 643 /* send the open to venus. */ 644 INIT_IN_L(&inp->ih, CODA_SYMLINK, cred, l); 645 inp->Fid = *fid; 646 CNV_V2VV_ATTR(&inp->attr, va); 647 648 inp->srcname = Isize; 649 STRCPY(srcname, lnm, llen); /* increments Isize */ 650 651 inp->tname = Isize; 652 STRCPY(tname, nm, len); /* increments Isize */ 653 654 error = coda_call(mdp, Isize, &Osize, (char *)inp); 655 656 CODA_FREE(inp, coda_symlink_size); 657 return error; 658 } 659 660 int 661 venus_readdir(void *mdp, CodaFid *fid, 662 int count, int offset, 663 struct ucred *cred, struct lwp *l, 664 /*out*/ char *buffer, int *len) 665 { 666 DECL(coda_readdir); /* sets Isize & Osize */ 667 coda_readdir_size = VC_MAXMSGSIZE; 668 ALLOC(coda_readdir); /* sets inp & outp */ 669 670 /* send the open to venus. */ 671 INIT_IN_L(&inp->ih, CODA_READDIR, cred, l); 672 inp->Fid = *fid; 673 inp->count = count; 674 inp->offset = offset; 675 676 Osize = VC_MAXMSGSIZE; 677 error = coda_call(mdp, Isize, &Osize, (char *)inp); 678 KASSERT(outp != NULL); 679 if (!error) { 680 bcopy((char *)outp + (int)(long)outp->data, buffer, outp->size); 681 *len = outp->size; 682 } 683 684 CODA_FREE(inp, coda_readdir_size); 685 return error; 686 } 687 688 int 689 venus_statfs(void *mdp, struct ucred *cred, struct lwp *l, 690 /*out*/ struct coda_statfs *fsp) 691 { 692 DECL(coda_statfs); /* sets Isize & Osize */ 693 ALLOC(coda_statfs); /* sets inp & outp */ 694 695 /* send the open to venus. */ 696 INIT_IN_L(&inp->ih, CODA_STATFS, cred, l); 697 698 error = coda_call(mdp, Isize, &Osize, (char *)inp); 699 KASSERT(outp != NULL); 700 if (!error) { 701 *fsp = outp->stat; 702 } 703 704 CODA_FREE(inp, coda_statfs_size); 705 return error; 706 } 707 708 int 709 venus_fhtovp(void *mdp, CodaFid *fid, 710 struct ucred *cred, struct proc *p, 711 /*out*/ CodaFid *VFid, int *vtype) 712 { 713 DECL(coda_vget); /* sets Isize & Osize */ 714 ALLOC(coda_vget); /* sets inp & outp */ 715 716 /* Send the open to Venus. */ 717 INIT_IN(&inp->ih, CODA_VGET, cred, p); 718 inp->Fid = *fid; 719 720 error = coda_call(mdp, Isize, &Osize, (char *)inp); 721 KASSERT(outp != NULL); 722 if (!error) { 723 *VFid = outp->Fid; 724 *vtype = outp->vtype; 725 } 726 727 CODA_FREE(inp, coda_vget_size); 728 return error; 729 } 730
Indexes created Sat Sep 27 22:09:54 GMT 2025