2 * Coda: an Experimental Distributed File System
5 * Copyright (c) 1987-1998 Carnegie Mellon University
8 * Permission to use, copy, modify and distribute this software and its
9 * documentation is hereby granted, provided that both the copyright
10 * notice and this permission notice appear in all copies of the
11 * software, derivative works or modified versions, and any portions
12 * thereof, and that both notices appear in supporting documentation, and
13 * that credit is given to Carnegie Mellon University in all documents
14 * and publicity pertaining to direct or indirect use of this code or its
17 * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS,
18 * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS
19 * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON
20 * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
21 * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF
22 * ANY DERIVATIVE WORK.
24 * Carnegie Mellon encourages users of this software to return any
25 * improvements or extensions that they make, and to grant Carnegie
26 * Mellon the rights to redistribute these changes without encumbrance.
28 * @(#) src/sys/cfs/coda_venus.c,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/fcntl.h>
37 #include <sys/ioccom.h>
39 #include <sys/malloc.h>
40 #include <sys/mutex.h>
44 #include <coda/coda.h>
45 #include <coda/cnode.h>
46 #include <coda/coda_venus.h>
47 #include <coda/coda_pioctl.h>
49 #define DECL_NO_IN(name) \
50 struct coda_in_hdr *inp; \
51 struct name ## _out *outp; \
52 int name ## _size = sizeof (struct coda_in_hdr); \
53 int Isize = sizeof (struct coda_in_hdr); \
54 int Osize = sizeof (struct name ## _out); \
58 struct name ## _in *inp; \
59 struct name ## _out *outp; \
60 int name ## _size = sizeof (struct name ## _in); \
61 int Isize = sizeof (struct name ## _in); \
62 int Osize = sizeof (struct name ## _out); \
65 #define DECL_NO_OUT(name) \
66 struct name ## _in *inp; \
67 struct coda_out_hdr *outp; \
68 int name ## _size = sizeof (struct name ## _in); \
69 int Isize = sizeof (struct name ## _in); \
70 int Osize = sizeof (struct coda_out_hdr); \
73 #define ALLOC_NO_IN(name) \
74 if (Osize > name ## _size) \
75 name ## _size = Osize; \
76 CODA_ALLOC(inp, struct coda_in_hdr *, name ## _size);\
77 outp = (struct name ## _out *) inp
80 if (Osize > name ## _size) \
81 name ## _size = Osize; \
82 CODA_ALLOC(inp, struct name ## _in *, name ## _size);\
83 outp = (struct name ## _out *) inp
85 #define ALLOC_NO_OUT(name) \
86 if (Osize > name ## _size) \
87 name ## _size = Osize; \
88 CODA_ALLOC(inp, struct name ## _in *, name ## _size);\
89 outp = (struct coda_out_hdr *) inp
91 #define STRCPY(struc, name, len) \
92 bcopy(name, (char *)inp + (int)inp->struc, len); \
93 ((char*)inp + (int)inp->struc)[len++] = 0; \
97 #define INIT_IN(in, op, ident, p) \
98 (in)->opcode = (op); \
99 sx_slock(&proctree_lock); \
100 (in)->pid = p ? p->p_pid : -1; \
101 (in)->pgid = p ? p->p_pgid : -1; \
102 (in)->sid = (p && p->p_session && p->p_session->s_leader) ? (p->p_session->s_leader->p_pid) : -1; \
103 sx_sunlock(&proctree_lock); \
104 if (ident != NOCRED) { \
105 (in)->cred.cr_uid = ident->cr_uid; \
106 (in)->cred.cr_groupid = ident->cr_gid; \
108 bzero(&((in)->cred),sizeof(struct coda_cred)); \
109 (in)->cred.cr_uid = -1; \
110 (in)->cred.cr_groupid = -1; \
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 if (ident != NOCRED) { \
118 (in)->uid = ident->cr_uid; \
123 #define CNV_OFLAG(to, from) \
126 if (from & FREAD) to |= C_O_READ; \
127 if (from & FWRITE) to |= C_O_WRITE; \
128 if (from & O_TRUNC) to |= C_O_TRUNC; \
129 if (from & O_EXCL) to |= C_O_EXCL; \
130 if (from & O_CREAT) to |= C_O_CREAT; \
133 #define CNV_VV2V_ATTR(top, fromp) \
135 (top)->va_type = (fromp)->va_type; \
136 (top)->va_mode = (fromp)->va_mode; \
137 (top)->va_nlink = (fromp)->va_nlink; \
138 (top)->va_uid = (fromp)->va_uid; \
139 (top)->va_gid = (fromp)->va_gid; \
140 (top)->va_fsid = VNOVAL; \
141 (top)->va_fileid = (fromp)->va_fileid; \
142 (top)->va_size = (fromp)->va_size; \
143 (top)->va_blocksize = (fromp)->va_blocksize; \
144 (top)->va_atime = (fromp)->va_atime; \
145 (top)->va_mtime = (fromp)->va_mtime; \
146 (top)->va_ctime = (fromp)->va_ctime; \
147 (top)->va_gen = (fromp)->va_gen; \
148 (top)->va_flags = (fromp)->va_flags; \
149 (top)->va_rdev = (fromp)->va_rdev; \
150 (top)->va_bytes = (fromp)->va_bytes; \
151 (top)->va_filerev = (fromp)->va_filerev; \
152 (top)->va_vaflags = VNOVAL; \
153 (top)->va_spare = VNOVAL; \
156 #define CNV_V2VV_ATTR(top, fromp) \
158 (top)->va_type = (fromp)->va_type; \
159 (top)->va_mode = (fromp)->va_mode; \
160 (top)->va_nlink = (fromp)->va_nlink; \
161 (top)->va_uid = (fromp)->va_uid; \
162 (top)->va_gid = (fromp)->va_gid; \
163 (top)->va_fileid = (fromp)->va_fileid; \
164 (top)->va_size = (fromp)->va_size; \
165 (top)->va_blocksize = (fromp)->va_blocksize; \
166 (top)->va_atime = (fromp)->va_atime; \
167 (top)->va_mtime = (fromp)->va_mtime; \
168 (top)->va_ctime = (fromp)->va_ctime; \
169 (top)->va_gen = (fromp)->va_gen; \
170 (top)->va_flags = (fromp)->va_flags; \
171 (top)->va_rdev = (fromp)->va_rdev; \
172 (top)->va_bytes = (fromp)->va_bytes; \
173 (top)->va_filerev = (fromp)->va_filerev; \
177 int coda_kernel_version = CODA_KERNEL_VERSION;
180 venus_root(void *mdp,
181 struct ucred *cred, struct proc *p,
182 /*out*/ CodaFid *VFid)
184 DECL_NO_IN(coda_root); /* sets Isize & Osize */
185 ALLOC_NO_IN(coda_root); /* sets inp & outp */
187 /* send the open to venus. */
188 INIT_IN(inp, CODA_ROOT, cred, p);
190 error = coda_call(mdp, Isize, &Osize, (char *)inp);
194 CODA_FREE(inp, coda_root_size);
199 venus_open(void *mdp, CodaFid *fid, int flag,
200 struct ucred *cred, struct proc *p,
201 /*out*/ struct cdev **dev, ino_t *inode)
205 DECL(coda_open); /* sets Isize & Osize */
206 ALLOC(coda_open); /* sets inp & outp */
208 /* send the open to venus. */
209 INIT_IN(&inp->ih, CODA_OPEN, cred, p);
211 CNV_OFLAG(cflag, flag);
214 error = coda_call(mdp, Isize, &Osize, (char *)inp);
216 *dev = findcdev(outp->dev);
217 *inode = outp->inode;
220 CODA_FREE(inp, coda_open_size);
228 venus_close(void *mdp, CodaFid *fid, int flag,
229 struct ucred *cred, struct proc *p)
232 DECL_NO_OUT(coda_close); /* sets Isize & Osize */
233 ALLOC_NO_OUT(coda_close); /* sets inp & outp */
235 INIT_IN(&inp->ih, CODA_CLOSE, cred, p);
237 CNV_OFLAG(cflag, flag);
240 error = coda_call(mdp, Isize, &Osize, (char *)inp);
242 CODA_FREE(inp, coda_close_size);
247 * these two calls will not exist!!! the container file is read/written
261 * this is a bit sad too. the ioctl's are for the control file, not for
265 venus_ioctl(void *mdp, CodaFid *fid,
266 int com, int flag, caddr_t data,
267 struct ucred *cred, struct proc *p)
269 DECL(coda_ioctl); /* sets Isize & Osize */
270 struct PioctlData *iap = (struct PioctlData *)data;
273 coda_ioctl_size = VC_MAXMSGSIZE;
274 ALLOC(coda_ioctl); /* sets inp & outp */
276 INIT_IN(&inp->ih, CODA_IOCTL, cred, p);
279 /* command was mutated by increasing its size field to reflect the
280 * path and follow args. we need to subtract that out before sending
281 * the command to venus.
283 inp->cmd = (com & ~(IOCPARM_MASK << 16));
284 tmp = ((com >> 16) & IOCPARM_MASK) - sizeof (char *) - sizeof (int);
285 inp->cmd |= (tmp & IOCPARM_MASK) << 16;
288 inp->len = iap->vi.in_size;
289 inp->data = (char *)(sizeof (struct coda_ioctl_in));
291 error = copyin(iap->vi.in, (char*)inp + (long)inp->data,
294 CODA_FREE(inp, coda_ioctl_size);
298 Osize = VC_MAXMSGSIZE;
299 error = coda_call(mdp, Isize + iap->vi.in_size, &Osize, (char *)inp);
301 /* copy out the out buffer. */
303 if (outp->len > iap->vi.out_size) {
306 error = copyout((char *)outp + (long)outp->data,
307 iap->vi.out, iap->vi.out_size);
311 CODA_FREE(inp, coda_ioctl_size);
316 venus_getattr(void *mdp, CodaFid *fid,
317 struct ucred *cred, struct proc *p,
318 /*out*/ struct vattr *vap)
320 DECL(coda_getattr); /* sets Isize & Osize */
321 ALLOC(coda_getattr); /* sets inp & outp */
323 /* send the open to venus. */
324 INIT_IN(&inp->ih, CODA_GETATTR, cred, p);
327 error = coda_call(mdp, Isize, &Osize, (char *)inp);
329 CNV_VV2V_ATTR(vap, &outp->attr);
332 CODA_FREE(inp, coda_getattr_size);
337 venus_setattr(void *mdp, CodaFid *fid, struct vattr *vap,
338 struct ucred *cred, struct proc *p)
340 DECL_NO_OUT(coda_setattr); /* sets Isize & Osize */
341 ALLOC_NO_OUT(coda_setattr); /* sets inp & outp */
343 /* send the open to venus. */
344 INIT_IN(&inp->ih, CODA_SETATTR, cred, p);
346 CNV_V2VV_ATTR(&inp->attr, vap);
348 error = coda_call(mdp, Isize, &Osize, (char *)inp);
350 CODA_FREE(inp, coda_setattr_size);
355 venus_access(void *mdp, CodaFid *fid, int mode,
356 struct ucred *cred, struct proc *p)
358 DECL_NO_OUT(coda_access); /* sets Isize & Osize */
359 ALLOC_NO_OUT(coda_access); /* sets inp & outp */
361 /* send the open to venus. */
362 INIT_IN(&inp->ih, CODA_ACCESS, cred, p);
365 * NetBSD and Venus internals use the "data" in the low 3 bits.
366 * Hence, the conversion.
368 inp->flags = mode>>6;
370 error = coda_call(mdp, Isize, &Osize, (char *)inp);
372 CODA_FREE(inp, coda_access_size);
377 venus_readlink(void *mdp, CodaFid *fid,
378 struct ucred *cred, struct proc *p,
379 /*out*/ char **str, int *len)
381 DECL(coda_readlink); /* sets Isize & Osize */
382 coda_readlink_size += CODA_MAXPATHLEN;
383 ALLOC(coda_readlink); /* sets inp & outp */
385 /* send the open to venus. */
386 INIT_IN(&inp->ih, CODA_READLINK, cred, p);
389 Osize += CODA_MAXPATHLEN;
390 error = coda_call(mdp, Isize, &Osize, (char *)inp);
392 CODA_ALLOC(*str, char *, outp->count);
394 bcopy((char *)outp + (long)outp->data, *str, *len);
397 CODA_FREE(inp, coda_readlink_size);
402 venus_fsync(void *mdp, CodaFid *fid, struct proc *p)
404 DECL_NO_OUT(coda_fsync); /* sets Isize & Osize */
405 ALLOC_NO_OUT(coda_fsync); /* sets inp & outp */
407 /* send the open to venus. */
408 INIT_IN(&inp->ih, CODA_FSYNC, NOCRED, p); /* XXX: should be cached mount cred */
411 error = coda_call(mdp, Isize, &Osize, (char *)inp);
413 CODA_FREE(inp, coda_fsync_size);
418 venus_lookup(void *mdp, CodaFid *fid,
419 const char *nm, int len,
420 struct ucred *cred, struct proc *p,
421 /*out*/ CodaFid *VFid, int *vtype)
423 DECL(coda_lookup); /* sets Isize & Osize */
424 coda_lookup_size += len + 1;
425 ALLOC(coda_lookup); /* sets inp & outp */
427 /* send the open to venus. */
428 INIT_IN(&inp->ih, CODA_LOOKUP, cred, p);
432 * Between version 1 and version 2 we have added an extra flag field
433 * to this structure. But because the string was at the end and because
434 * of the wierd way we represent strings by having the slot point to
435 * where the string characters are in the "heap", we can just slip the
436 * flag parameter in after the string slot pointer and veni that don't
437 * know better won't see this new flag field ...
438 * Otherwise we'd need two different venus_lookup functions.
441 inp->flags = CLU_CASE_SENSITIVE; /* doesn't really matter for BSD */
442 STRCPY(name, nm, len); /* increments Isize */
444 error = coda_call(mdp, Isize, &Osize, (char *)inp);
447 *vtype = outp->vtype;
450 CODA_FREE(inp, coda_lookup_size);
455 venus_create(void *mdp, CodaFid *fid,
456 const char *nm, int len, int exclusive, int mode, struct vattr *va,
457 struct ucred *cred, struct proc *p,
458 /*out*/ CodaFid *VFid, struct vattr *attr)
460 DECL(coda_create); /* sets Isize & Osize */
461 coda_create_size += len + 1;
462 ALLOC(coda_create); /* sets inp & outp */
464 /* send the open to venus. */
465 INIT_IN(&inp->ih, CODA_CREATE, cred, p);
467 inp->excl = exclusive ? C_O_EXCL : 0;
469 CNV_V2VV_ATTR(&inp->attr, va);
472 STRCPY(name, nm, len); /* increments Isize */
474 error = coda_call(mdp, Isize, &Osize, (char *)inp);
477 CNV_VV2V_ATTR(attr, &outp->attr);
480 CODA_FREE(inp, coda_create_size);
485 venus_remove(void *mdp, CodaFid *fid,
486 const char *nm, int len,
487 struct ucred *cred, struct proc *p)
489 DECL_NO_OUT(coda_remove); /* sets Isize & Osize */
490 coda_remove_size += len + 1;
491 ALLOC_NO_OUT(coda_remove); /* sets inp & outp */
493 /* send the open to venus. */
494 INIT_IN(&inp->ih, CODA_REMOVE, cred, p);
498 STRCPY(name, nm, len); /* increments Isize */
500 error = coda_call(mdp, Isize, &Osize, (char *)inp);
502 CODA_FREE(inp, coda_remove_size);
507 venus_link(void *mdp, CodaFid *fid, CodaFid *tfid,
508 const char *nm, int len,
509 struct ucred *cred, struct proc *p)
511 DECL_NO_OUT(coda_link); /* sets Isize & Osize */
512 coda_link_size += len + 1;
513 ALLOC_NO_OUT(coda_link); /* sets inp & outp */
515 /* send the open to venus. */
516 INIT_IN(&inp->ih, CODA_LINK, cred, p);
517 inp->sourceFid = *fid;
518 inp->destFid = *tfid;
521 STRCPY(tname, nm, len); /* increments Isize */
523 error = coda_call(mdp, Isize, &Osize, (char *)inp);
525 CODA_FREE(inp, coda_link_size);
530 venus_rename(void *mdp, CodaFid *fid, CodaFid *tfid,
531 const char *nm, int len, const char *tnm, int tlen,
532 struct ucred *cred, struct proc *p)
534 DECL_NO_OUT(coda_rename); /* sets Isize & Osize */
535 coda_rename_size += len + 1 + tlen + 1;
536 ALLOC_NO_OUT(coda_rename); /* sets inp & outp */
538 /* send the open to venus. */
539 INIT_IN(&inp->ih, CODA_RENAME, cred, p);
540 inp->sourceFid = *fid;
541 inp->destFid = *tfid;
543 inp->srcname = Isize;
544 STRCPY(srcname, nm, len); /* increments Isize */
546 inp->destname = Isize;
547 STRCPY(destname, tnm, tlen); /* increments Isize */
549 error = coda_call(mdp, Isize, &Osize, (char *)inp);
551 CODA_FREE(inp, coda_rename_size);
556 venus_mkdir(void *mdp, CodaFid *fid,
557 const char *nm, int len, struct vattr *va,
558 struct ucred *cred, struct proc *p,
559 /*out*/ CodaFid *VFid, struct vattr *ova)
561 DECL(coda_mkdir); /* sets Isize & Osize */
562 coda_mkdir_size += len + 1;
563 ALLOC(coda_mkdir); /* sets inp & outp */
565 /* send the open to venus. */
566 INIT_IN(&inp->ih, CODA_MKDIR, cred, p);
568 CNV_V2VV_ATTR(&inp->attr, va);
571 STRCPY(name, nm, len); /* increments Isize */
573 error = coda_call(mdp, Isize, &Osize, (char *)inp);
576 CNV_VV2V_ATTR(ova, &outp->attr);
579 CODA_FREE(inp, coda_mkdir_size);
584 venus_rmdir(void *mdp, CodaFid *fid,
585 const char *nm, int len,
586 struct ucred *cred, struct proc *p)
588 DECL_NO_OUT(coda_rmdir); /* sets Isize & Osize */
589 coda_rmdir_size += len + 1;
590 ALLOC_NO_OUT(coda_rmdir); /* sets inp & outp */
592 /* send the open to venus. */
593 INIT_IN(&inp->ih, CODA_RMDIR, cred, p);
597 STRCPY(name, nm, len); /* increments Isize */
599 error = coda_call(mdp, Isize, &Osize, (char *)inp);
601 CODA_FREE(inp, coda_rmdir_size);
606 venus_symlink(void *mdp, CodaFid *fid,
607 const char *lnm, int llen, const char *nm, int len, struct vattr *va,
608 struct ucred *cred, struct proc *p)
610 DECL_NO_OUT(coda_symlink); /* sets Isize & Osize */
611 coda_symlink_size += llen + 1 + len + 1;
612 ALLOC_NO_OUT(coda_symlink); /* sets inp & outp */
614 /* send the open to venus. */
615 INIT_IN(&inp->ih, CODA_SYMLINK, cred, p);
617 CNV_V2VV_ATTR(&inp->attr, va);
619 inp->srcname = Isize;
620 STRCPY(srcname, lnm, llen); /* increments Isize */
623 STRCPY(tname, nm, len); /* increments Isize */
625 error = coda_call(mdp, Isize, &Osize, (char *)inp);
627 CODA_FREE(inp, coda_symlink_size);
632 venus_readdir(void *mdp, CodaFid *fid,
633 int count, int offset,
634 struct ucred *cred, struct proc *p,
635 /*out*/ char *buffer, int *len)
637 DECL(coda_readdir); /* sets Isize & Osize */
638 coda_readdir_size = VC_MAXMSGSIZE;
639 ALLOC(coda_readdir); /* sets inp & outp */
641 /* send the open to venus. */
642 INIT_IN(&inp->ih, CODA_READDIR, cred, p);
645 inp->offset = offset;
647 Osize = VC_MAXMSGSIZE;
648 error = coda_call(mdp, Isize, &Osize, (char *)inp);
650 bcopy((char *)outp + (long)outp->data, buffer, outp->size);
654 CODA_FREE(inp, coda_readdir_size);
659 venus_fhtovp(void *mdp, CodaFid *fid,
660 struct ucred *cred, struct proc *p,
661 /*out*/ CodaFid *VFid, int *vtype)
663 DECL(coda_vget); /* sets Isize & Osize */
664 ALLOC(coda_vget); /* sets inp & outp */
666 /* Send the open to Venus. */
667 INIT_IN(&inp->ih, CODA_VGET, cred, p);
670 error = coda_call(mdp, Isize, &Osize, (char *)inp);
673 *vtype = outp->vtype;
676 CODA_FREE(inp, coda_vget_size);