3 * Coda: an Experimental Distributed File System
6 * Copyright (c) 1987-1998 Carnegie Mellon University
9 * Permission to use, copy, modify and distribute this software and its
10 * documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation, and
14 * that credit is given to Carnegie Mellon University in all documents
15 * and publicity pertaining to direct or indirect use of this code or its
18 * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS,
19 * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS
20 * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON
21 * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
22 * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF
23 * ANY DERIVATIVE WORK.
25 * Carnegie Mellon encourages users of this software to return any
26 * improvements or extensions that they make, and to grant Carnegie
27 * Mellon the rights to redistribute these changes without encumbrance.
29 * @(#) src/sys/coda/coda_vnops.c,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $
30 * $FreeBSD: src/sys/coda/coda_vnops.c,v 1.22.2.1 2001/06/29 16:26:22 shafeeq Exp $
31 * $DragonFly: src/sys/vfs/coda/Attic/coda_vnops.c,v 1.32 2006/03/29 18:44:53 dillon Exp $
36 * Mach Operating System
37 * Copyright (c) 1990 Carnegie-Mellon University
38 * Copyright (c) 1989 Carnegie-Mellon University
39 * All rights reserved. The CMU software License Agreement specifies
40 * the terms and conditions for use and redistribution.
44 * This code was written for the Coda file system at Carnegie Mellon
45 * University. Contributers include David Steere, James Kistler, and
49 #include <sys/param.h>
50 #include <sys/systm.h>
51 #include <sys/kernel.h>
53 #include <sys/malloc.h>
54 #include <sys/mount.h>
55 #include <sys/errno.h>
58 #include <sys/fcntl.h>
60 #include <sys/nlookup.h>
61 #include <sys/namei.h>
62 #include <sys/ioccom.h>
63 #include <sys/select.h>
66 #include <vm/vm_object.h>
67 #include <vm/vm_extern.h>
68 #include <vm/vm_zone.h>
72 #include "coda_vnops.h"
73 #include "coda_venus.h"
74 #include "coda_opstats.h"
75 #include "coda_subr.h"
76 #include "coda_namecache.h"
77 #include "coda_pioctl.h"
80 * These flags select various performance enhancements.
82 int coda_attr_cache = 1; /* Set to cache attributes in the kernel */
83 int coda_symlink_cache = 1; /* Set to cache symbolic link information */
84 int coda_access_cache = 1; /* Set to handle some access checks directly */
86 /* structure to keep track of vfs calls */
88 struct coda_op_stats coda_vnodeopstats[CODA_VNODEOPS_SIZE];
90 #define MARK_ENTRY(op) (coda_vnodeopstats[op].entries++)
91 #define MARK_INT_SAT(op) (coda_vnodeopstats[op].sat_intrn++)
92 #define MARK_INT_FAIL(op) (coda_vnodeopstats[op].unsat_intrn++)
93 #define MARK_INT_GEN(op) (coda_vnodeopstats[op].gen_intrn++)
95 /* What we are delaying for in printf */
96 int coda_printf_delay = 0; /* in microseconds */
97 int coda_vnop_print_entry = 0;
98 static int coda_lockdebug = 0;
100 /* Definition of the vfs operation vector */
103 * Some NetBSD details:
105 * coda_start is called at the end of the mount syscall.
106 * coda_init is called at boot time.
109 #define ENTRY if(coda_vnop_print_entry) myprintf(("Entered %s\n",__func__))
111 /* Definition of the vnode operation vector */
113 struct vnodeopv_entry_desc coda_vnodeop_entries[] = {
114 { &vop_default_desc, (vnodeopv_entry_t)coda_vop_error },
115 { &vop_old_lookup_desc, (vnodeopv_entry_t)coda_lookup }, /* lookup */
116 { &vop_old_create_desc, (vnodeopv_entry_t)coda_create }, /* create */
117 { &vop_old_mknod_desc, (vnodeopv_entry_t)coda_vop_error }, /* mknod */
118 { &vop_open_desc, (vnodeopv_entry_t)coda_open }, /* open */
119 { &vop_close_desc, (vnodeopv_entry_t)coda_close }, /* close */
120 { &vop_access_desc, (vnodeopv_entry_t)coda_access }, /* access */
121 { &vop_getattr_desc, (vnodeopv_entry_t)coda_getattr }, /* getattr */
122 { &vop_setattr_desc, (vnodeopv_entry_t)coda_setattr }, /* setattr */
123 { &vop_read_desc, (vnodeopv_entry_t)coda_read }, /* read */
124 { &vop_write_desc, (vnodeopv_entry_t)coda_write }, /* write */
125 { &vop_ioctl_desc, (vnodeopv_entry_t)coda_ioctl }, /* ioctl */
126 { &vop_mmap_desc, (vnodeopv_entry_t)coda_vop_error }, /* mmap */
127 { &vop_fsync_desc, (vnodeopv_entry_t)coda_fsync }, /* fsync */
128 { &vop_old_remove_desc, (vnodeopv_entry_t)coda_remove }, /* remove */
129 { &vop_old_link_desc, (vnodeopv_entry_t)coda_link }, /* link */
130 { &vop_old_rename_desc, (vnodeopv_entry_t)coda_rename }, /* rename */
131 { &vop_old_mkdir_desc, (vnodeopv_entry_t)coda_mkdir }, /* mkdir */
132 { &vop_old_rmdir_desc, (vnodeopv_entry_t)coda_rmdir }, /* rmdir */
133 { &vop_old_symlink_desc, (vnodeopv_entry_t)coda_symlink }, /* symlink */
134 { &vop_readdir_desc, (vnodeopv_entry_t)coda_readdir }, /* readdir */
135 { &vop_readlink_desc, (vnodeopv_entry_t)coda_readlink }, /* readlink */
136 { &vop_inactive_desc, (vnodeopv_entry_t)coda_inactive }, /* inactive */
137 { &vop_reclaim_desc, (vnodeopv_entry_t)coda_reclaim }, /* reclaim */
138 { &vop_lock_desc, (vnodeopv_entry_t)coda_lock }, /* lock */
139 { &vop_unlock_desc, (vnodeopv_entry_t)coda_unlock }, /* unlock */
140 { &vop_bmap_desc, (vnodeopv_entry_t)coda_bmap }, /* bmap */
141 { &vop_strategy_desc, (vnodeopv_entry_t)coda_strategy }, /* strategy */
142 { &vop_print_desc, (vnodeopv_entry_t)coda_vop_error }, /* print */
143 { &vop_islocked_desc, (vnodeopv_entry_t)coda_islocked }, /* islocked */
144 { &vop_pathconf_desc, (vnodeopv_entry_t)coda_vop_error }, /* pathconf */
145 { &vop_advlock_desc, (vnodeopv_entry_t)coda_vop_nop }, /* advlock */
146 { &vop_bwrite_desc, (vnodeopv_entry_t)coda_vop_error }, /* bwrite */
147 { &vop_poll_desc, (vnodeopv_entry_t)vop_stdpoll }, /* poll */
148 { &vop_getpages_desc, (vnodeopv_entry_t)coda_fbsd_getpages }, /* pager intf.*/
149 { &vop_putpages_desc, (vnodeopv_entry_t)coda_fbsd_putpages }, /* pager intf.*/
153 we need to define these someday
154 #define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
155 #define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
156 #define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc)
157 #define UFS_TRUNCATE(aa, bb, cc, dd, ee) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd, ee)
158 #define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb)
161 { &vop_reallocblks_desc, (vnodeopv_entry_t) ufs_missingop },
162 { &vop_old_lookup_desc, (vnodeopv_entry_t) ufs_lookup },
163 { &vop_old_whiteout_desc, (vnodeopv_entry_t) ufs_whiteout },
168 /* A generic panic: we were called with something we didn't define yet */
170 coda_vop_error(void *anon)
172 struct vnodeop_desc **desc = (struct vnodeop_desc **)anon;
174 myprintf(("coda_vop_error: Vnode operation %s called, but not defined.\n",
175 (*desc)->vdesc_name));
177 panic("coda_vop_error");
182 /* A generic do-nothing. For lease_check, advlock */
184 coda_vop_nop(void *anon)
186 struct vnodeop_desc **desc = (struct vnodeop_desc **)anon;
189 myprintf(("Vnode operation %s called, but unsupported\n",
190 (*desc)->vdesc_name));
196 coda_vnodeopstats_init(void)
200 for(i=0;i<CODA_VNODEOPS_SIZE;i++) {
201 coda_vnodeopstats[i].opcode = i;
202 coda_vnodeopstats[i].entries = 0;
203 coda_vnodeopstats[i].sat_intrn = 0;
204 coda_vnodeopstats[i].unsat_intrn = 0;
205 coda_vnodeopstats[i].gen_intrn = 0;
211 * coda_open calls Venus to return the device, inode pair of the cache
212 * file holding the data. Using iget, coda_open finds the vnode of the
213 * cache file, and then opens it.
219 * NetBSD can pass the O_EXCL flag in mode, even though the check
220 * has already happened. Venus defensively assumes that if open
221 * is passed the EXCL, it must be a bug. We strip the flag here.
224 struct vop_open_args *ap = v;
225 struct vnode **vpp = &(ap->a_vp);
226 struct cnode *cp = VTOC(*vpp);
227 int flag = ap->a_mode & (~O_EXCL);
228 struct ucred *cred = ap->a_cred;
229 struct thread *td = ap->a_td;
236 MARK_ENTRY(CODA_OPEN_STATS);
238 /* Check for open of control file. */
239 if (IS_CTL_VP(*vpp)) {
241 /* if (WRITEABLE(flag)) */
242 if (flag & (FWRITE | O_TRUNC | O_CREAT | O_EXCL)) {
243 MARK_INT_FAIL(CODA_OPEN_STATS);
246 MARK_INT_SAT(CODA_OPEN_STATS);
250 error = venus_open(vtomi((*vpp)), &cp->c_fid, flag, cred, td, &dev, &inode);
254 CODADEBUG( CODA_OPEN,myprintf(("open: dev %#lx inode %lu result %d\n",
255 (u_long)dev2udev(dev), (u_long)inode,
259 /* Translate the <device, inode> pair for the cache file into
261 error = coda_grab_vnode(dev, inode, &vp);
265 /* We get the vnode back locked. Needs unlocked */
266 VOP_UNLOCK(vp, 0, td);
267 /* Keep a reference until the close comes in. */
270 /* Save the vnode pointer for the cache file. */
271 if (cp->c_ovp == NULL) {
275 panic("coda_open: cp->c_ovp != ITOV(ip)");
279 /* Flush the attribute cached if writing the file. */
282 cp->c_flags &= ~C_VATTR;
285 /* Save the <device, inode> pair for the cache file to speed
286 up subsequent page_read's. */
290 /* Open the cache file. */
291 error = VOP_OPEN(vp, flag, cred, NULL, td);
293 printf("coda_open: VOP_OPEN on container failed %d\n", error);
296 /* grab (above) does this when it calls newvnode unless it's in the cache*/
297 if (vp->v_type == VREG) {
298 if (vp->v_object == NULL) {
300 printf("coda_open: cache file vp %p has no VM object!\n", vp);
309 * Close the cache file used for I/O and notify Venus.
315 struct vop_close_args *ap = v;
316 struct vnode *vp = ap->a_vp;
317 struct cnode *cp = VTOC(vp);
318 int flag = ap->a_fflag;
319 struct thread *td = ap->a_td;
323 MARK_ENTRY(CODA_CLOSE_STATS);
325 /* Check for close of control file. */
327 MARK_INT_SAT(CODA_CLOSE_STATS);
331 if (IS_UNMOUNTING(cp)) {
334 printf("coda_close: destroying container ref %d, ufs vp %p of vp %p/cp %p\n",
335 vp->v_usecount, cp->c_ovp, vp, cp);
340 VOP_CLOSE(cp->c_ovp, flag, td); /* Do errors matter here? */
345 printf("coda_close: NO container vp %p/cp %p\n", vp, cp);
350 VOP_CLOSE(cp->c_ovp, flag, td); /* Do errors matter here? */
354 if (--cp->c_ocount == 0)
357 if (flag & FWRITE) /* file was opened for write */
360 error = venus_close(vtomi(vp), &cp->c_fid, flag, proc0.p_ucred, td);
363 CODADEBUG(CODA_CLOSE, myprintf(("close: result %d\n",error)); )
370 struct vop_read_args *ap = v;
373 return(coda_rdwr(ap->a_vp, ap->a_uio, UIO_READ,
374 ap->a_ioflag, ap->a_cred, ap->a_uio->uio_td));
380 struct vop_write_args *ap = v;
383 return(coda_rdwr(ap->a_vp, ap->a_uio, UIO_WRITE,
384 ap->a_ioflag, ap->a_cred, ap->a_uio->uio_td));
388 coda_rdwr(struct vnode *vp, struct uio *uiop, enum uio_rw rw, int ioflag,
389 struct ucred *cred, struct thread *td)
392 /* NOTE: container file operation!!! */
394 struct cnode *cp = VTOC(vp);
395 struct vnode *cfvp = cp->c_ovp;
396 int igot_internally = 0;
397 int opened_internally = 0;
400 MARK_ENTRY(CODA_RDWR_STATS);
402 CODADEBUG(CODA_RDWR, myprintf(("coda_rdwr(%d, %p, %d, %lld, %d)\n", rw,
403 (void *)uiop->uio_iov->iov_base, uiop->uio_resid,
404 (long long)uiop->uio_offset, uiop->uio_segflg)); )
406 /* Check for rdwr of control object. */
408 MARK_INT_FAIL(CODA_RDWR_STATS);
413 * If file is not already open this must be a page
414 * {read,write} request. Iget the cache file's inode
415 * pointer if we still have its <device, inode> pair.
416 * Otherwise, we must do an internal open to derive the
421 * If we're dumping core, do the internal open. Otherwise
422 * venus won't have the correct size of the core when
423 * it's completely written.
425 if (cp->c_inode != 0 && (ioflag & IO_CORE) == 0) {
427 error = coda_grab_vnode(cp->c_device, cp->c_inode, &cfvp);
429 MARK_INT_FAIL(CODA_RDWR_STATS);
433 * We get the vnode back locked in both Mach and
434 * NetBSD. Needs unlocked
436 VOP_UNLOCK(cfvp, 0, td);
439 opened_internally = 1;
440 MARK_INT_GEN(CODA_OPEN_STATS);
441 error = VOP_OPEN(vp, (rw == UIO_READ ? FREAD : FWRITE),
443 printf("coda_rdwr: Internally Opening %p\n", vp);
445 printf("coda_rdwr: VOP_OPEN on container failed %d\n", error);
448 if (vp->v_type == VREG) {
449 if (vp->v_object == NULL) {
451 printf("coda_rdwr: vnode %p has no VM object!\n", vp);
456 MARK_INT_FAIL(CODA_RDWR_STATS);
463 /* Have UFS handle the call. */
464 CODADEBUG(CODA_RDWR, myprintf(("indirect rdwr: fid = (%lx.%lx.%lx), refcnt = %d\n",
465 cp->c_fid.Volume, cp->c_fid.Vnode,
466 cp->c_fid.Unique, CTOV(cp)->v_usecount)); )
469 if (rw == UIO_READ) {
470 error = VOP_READ(cfvp, uiop, ioflag, cred);
472 error = VOP_WRITE(cfvp, uiop, ioflag, cred);
473 /* ufs_write updates the vnode_pager_setsize for the vnode/object */
477 if (VOP_GETATTR(cfvp, &attr, td) == 0) {
478 vnode_pager_setsize(vp, attr.va_size);
484 MARK_INT_FAIL(CODA_RDWR_STATS);
486 MARK_INT_SAT(CODA_RDWR_STATS);
488 /* Do an internal close if necessary. */
489 if (opened_internally) {
490 MARK_INT_GEN(CODA_CLOSE_STATS);
491 VOP_CLOSE(vp, (rw == UIO_READ ? FREAD : FWRITE), td);
494 /* Invalidate cached attributes if writing. */
496 cp->c_flags &= ~C_VATTR;
504 struct vop_ioctl_args *ap = v;
505 struct vnode *vp = ap->a_vp;
506 int com = ap->a_command;
507 caddr_t data = ap->a_data;
508 int flag = ap->a_fflag;
509 struct ucred *cred = ap->a_cred;
510 struct thread *td = ap->a_td;
514 struct nlookupdata nd;
515 struct PioctlData *iap = (struct PioctlData *)data;
517 MARK_ENTRY(CODA_IOCTL_STATS);
519 CODADEBUG(CODA_IOCTL, myprintf(("in coda_ioctl on %s\n", iap->path));)
521 /* Don't check for operation on a dying object, for ctlvp it
524 /* Must be control object to succeed. */
525 if (!IS_CTL_VP(vp)) {
526 MARK_INT_FAIL(CODA_IOCTL_STATS);
527 CODADEBUG(CODA_IOCTL, myprintf(("coda_ioctl error: vp != ctlvp"));)
530 /* Look up the pathname. */
532 /* Should we use the name cache here? It would get it from
533 lookupname sooner or later anyway, right? */
536 error = nlookup_init(&nd, iap->path, UIO_USERSPACE,
537 (iap->follow ? NLC_FOLLOW : 0));
539 error = nlookup(&nd);
541 error = cache_vref(nd.nl_ncp, nd.nl_cred, &tvp);
545 MARK_INT_FAIL(CODA_IOCTL_STATS);
546 CODADEBUG(CODA_IOCTL, myprintf(("coda_ioctl error: lookup returns %d\n",
552 * Make sure this is a coda style cnode, but it may be a
555 if (tvp->v_tag != VT_CODA) {
557 MARK_INT_FAIL(CODA_IOCTL_STATS);
558 CODADEBUG(CODA_IOCTL,
559 myprintf(("coda_ioctl error: %s not a coda object\n",
564 if (iap->vi.in_size > VC_MAXDATASIZE) {
568 error = venus_ioctl(vtomi(tvp), &((VTOC(tvp))->c_fid), com, flag, data, cred, td);
571 MARK_INT_FAIL(CODA_IOCTL_STATS);
573 CODADEBUG(CODA_IOCTL, myprintf(("Ioctl returns %d \n", error)); )
580 * To reduce the cost of a user-level venus;we cache attributes in
581 * the kernel. Each cnode has storage allocated for an attribute. If
582 * c_vattr is valid, return a reference to it. Otherwise, get the
583 * attributes from venus and store them in the cnode. There is some
584 * question if this method is a security leak. But I think that in
585 * order to make this call, the user must have done a lookup and
586 * opened the file, and therefore should already have access.
589 coda_getattr(void *v)
592 struct vop_getattr_args *ap = v;
593 struct vnode *vp = ap->a_vp;
594 struct cnode *cp = VTOC(vp);
595 struct vattr *vap = ap->a_vap;
596 struct thread *td = ap->a_td;
600 MARK_ENTRY(CODA_GETATTR_STATS);
602 if (IS_UNMOUNTING(cp))
605 /* Check for getattr of control object. */
607 MARK_INT_FAIL(CODA_GETATTR_STATS);
611 /* Check to see if the attributes have already been cached */
612 if (VALID_VATTR(cp)) {
613 CODADEBUG(CODA_GETATTR, { myprintf(("attr cache hit: (%lx.%lx.%lx)\n",
616 cp->c_fid.Unique));});
617 CODADEBUG(CODA_GETATTR, if (!(codadebug & ~CODA_GETATTR))
618 print_vattr(&cp->c_vattr); );
621 MARK_INT_SAT(CODA_GETATTR_STATS);
625 error = venus_getattr(vtomi(vp), &cp->c_fid, proc0.p_ucred, td, vap);
628 CODADEBUG(CODA_GETATTR, myprintf(("getattr miss (%lx.%lx.%lx): result %d\n",
634 CODADEBUG(CODA_GETATTR, if (!(codadebug & ~CODA_GETATTR))
637 { int size = vap->va_size;
638 struct vnode *convp = cp->c_ovp;
639 if (convp != (struct vnode *)0) {
640 vnode_pager_setsize(convp, size);
643 /* If not open for write, store attributes in cnode */
644 if ((cp->c_owrite == 0) && (coda_attr_cache)) {
646 cp->c_flags |= C_VATTR;
654 coda_setattr(void *v)
657 struct vop_setattr_args *ap = v;
658 struct vnode *vp = ap->a_vp;
659 struct cnode *cp = VTOC(vp);
660 struct vattr *vap = ap->a_vap;
661 struct ucred *cred = ap->a_cred;
662 struct thread *td = ap->a_td;
666 MARK_ENTRY(CODA_SETATTR_STATS);
668 /* Check for setattr of control object. */
670 MARK_INT_FAIL(CODA_SETATTR_STATS);
674 if (codadebug & CODADBGMSK(CODA_SETATTR)) {
677 error = venus_setattr(vtomi(vp), &cp->c_fid, vap, cred, td);
680 cp->c_flags &= ~C_VATTR;
682 { int size = vap->va_size;
683 struct vnode *convp = cp->c_ovp;
684 if (size != VNOVAL && convp != (struct vnode *)0) {
685 vnode_pager_setsize(convp, size);
688 CODADEBUG(CODA_SETATTR, myprintf(("setattr %d\n", error)); )
696 struct vop_access_args *ap = v;
697 struct vnode *vp = ap->a_vp;
698 struct cnode *cp = VTOC(vp);
699 int mode = ap->a_mode;
700 struct ucred *cred = ap->a_cred;
701 struct thread *td = ap->a_td;
705 MARK_ENTRY(CODA_ACCESS_STATS);
707 /* Check for access of control object. Only read access is
710 /* bogus hack - all will be marked as successes */
711 MARK_INT_SAT(CODA_ACCESS_STATS);
712 return(((mode & VREAD) && !(mode & (VWRITE | VEXEC)))
717 * if the file is a directory, and we are checking exec (eg lookup)
718 * access, and the file is in the namecache, then the user must have
719 * lookup access to it.
721 if (coda_access_cache) {
722 if ((vp->v_type == VDIR) && (mode & VEXEC)) {
723 if (coda_nc_lookup(cp, ".", 1, cred)) {
724 MARK_INT_SAT(CODA_ACCESS_STATS);
725 return(0); /* it was in the cache */
730 error = venus_access(vtomi(vp), &cp->c_fid, mode, cred, td);
736 coda_readlink(void *v)
739 struct vop_readlink_args *ap = v;
740 struct vnode *vp = ap->a_vp;
741 struct cnode *cp = VTOC(vp);
742 struct uio *uiop = ap->a_uio;
743 struct ucred *cred = ap->a_cred;
744 struct thread *td = ap->a_uio->uio_td;
750 MARK_ENTRY(CODA_READLINK_STATS);
752 /* Check for readlink of control object. */
754 MARK_INT_FAIL(CODA_READLINK_STATS);
758 if ((coda_symlink_cache) && (VALID_SYMLINK(cp))) { /* symlink was cached */
759 uiop->uio_rw = UIO_READ;
760 error = uiomove(cp->c_symlink, (int)cp->c_symlen, uiop);
762 MARK_INT_FAIL(CODA_READLINK_STATS);
764 MARK_INT_SAT(CODA_READLINK_STATS);
768 error = venus_readlink(vtomi(vp), &cp->c_fid, cred, td, &str, &len);
771 uiop->uio_rw = UIO_READ;
772 error = uiomove(str, len, uiop);
774 if (coda_symlink_cache) {
777 cp->c_flags |= C_SYMLINK;
782 CODADEBUG(CODA_READLINK, myprintf(("in readlink result %d\n",error));)
790 struct vop_fsync_args *ap = v;
791 struct vnode *vp = ap->a_vp;
792 struct cnode *cp = VTOC(vp);
793 struct thread *td = ap->a_td;
795 struct vnode *convp = cp->c_ovp;
798 MARK_ENTRY(CODA_FSYNC_STATS);
800 /* Check for fsync on an unmounting object */
801 /* The NetBSD kernel, in it's infinite wisdom, can try to fsync
802 * after an unmount has been initiated. This is a Bad Thing,
803 * which we have to avoid. Not a legitimate failure for stats.
805 if (IS_UNMOUNTING(cp)) {
809 /* Check for fsync of control object. */
811 MARK_INT_SAT(CODA_FSYNC_STATS);
816 VOP_FSYNC(convp, MNT_WAIT, td);
819 * We see fsyncs with usecount == 1 then usecount == 0.
820 * For now we ignore them.
823 if (!vp->v_usecount) {
824 printf("coda_fsync on vnode %p with %d usecount. c_flags = %x (%x)\n",
825 vp, vp->v_usecount, cp->c_flags, cp->c_flags&C_PURGING);
830 * We can expect fsync on any vnode at all if venus is pruging it.
831 * Venus can't very well answer the fsync request, now can it?
832 * Hopefully, it won't have to, because hopefully, venus preserves
833 * the (possibly untrue) invariant that it never purges an open
836 if (cp->c_flags & C_PURGING) {
842 error = venus_fsync(vtomi(vp), &cp->c_fid, proc0.p_ucred, td);
844 CODADEBUG(CODA_FSYNC, myprintf(("in fsync result %d\n",error)); );
849 coda_inactive(void *v)
851 /* XXX - at the moment, inactive doesn't look at cred, and doesn't
852 have a proc pointer. Oops. */
854 struct vop_inactive_args *ap = v;
855 struct vnode *vp = ap->a_vp;
856 struct cnode *cp = VTOC(vp);
857 struct ucred *cred __attribute__((unused)) = NULL;
858 /*struct thread *td = curthread;*/
862 /* We don't need to send inactive to venus - DCS */
863 MARK_ENTRY(CODA_INACTIVE_STATS);
866 MARK_INT_SAT(CODA_INACTIVE_STATS);
870 CODADEBUG(CODA_INACTIVE, myprintf(("in inactive, %lx.%lx.%lx. vfsp %p\n",
871 cp->c_fid.Volume, cp->c_fid.Vnode,
872 cp->c_fid.Unique, vp->v_mount));)
874 /* If an array has been allocated to hold the symlink, deallocate it */
875 if ((coda_symlink_cache) && (VALID_SYMLINK(cp))) {
876 if (cp->c_symlink == NULL)
877 panic("coda_inactive: null symlink pointer in cnode");
879 CODA_FREE(cp->c_symlink, cp->c_symlen);
880 cp->c_flags &= ~C_SYMLINK;
884 /* Remove it from the table so it can't be found. */
886 if ((struct coda_mntinfo *)(vp->v_mount->mnt_data) == NULL) {
887 myprintf(("Help! vfsp->vfs_data was NULL, but vnode %p wasn't dying\n", vp));
888 panic("badness in coda_inactive\n");
891 if (IS_UNMOUNTING(cp)) {
893 printf("coda_inactive: IS_UNMOUNTING use %d: vp %p, cp %p\n", vp->v_usecount, vp, cp);
894 if (cp->c_ovp != NULL)
895 printf("coda_inactive: cp->ovp != NULL use %d: vp %p, cp %p\n",
896 vp->v_usecount, vp, cp);
899 #ifdef OLD_DIAGNOSTIC
900 if (CTOV(cp)->v_usecount) {
901 panic("coda_inactive: nonzero reference count");
903 if (cp->c_ovp != NULL) {
904 panic("coda_inactive: cp->ovp != NULL");
910 MARK_INT_SAT(CODA_INACTIVE_STATS);
915 * Remote file system operations having to do with directory manipulation.
919 * It appears that in NetBSD, lookup is supposed to return the vnode locked
925 struct vop_old_lookup_args *ap = v;
926 struct vnode *dvp = ap->a_dvp;
927 struct cnode *dcp = VTOC(dvp);
928 struct vnode **vpp = ap->a_vpp;
930 * It looks as though ap->a_cnp->ni_cnd->cn_nameptr holds the rest
931 * of the string to xlate, and that we must try to get at least
932 * ap->a_cnp->ni_cnd->cn_namelen of those characters to macth. I
935 struct componentname *cnp = ap->a_cnp;
936 struct ucred *cred = cnp->cn_cred;
937 struct thread *td = cnp->cn_td;
940 const char *nm = cnp->cn_nameptr;
941 int len = cnp->cn_namelen;
946 MARK_ENTRY(CODA_LOOKUP_STATS);
948 CODADEBUG(CODA_LOOKUP, myprintf(("lookup: %s in %lx.%lx.%lx\n",
949 nm, dcp->c_fid.Volume,
950 dcp->c_fid.Vnode, dcp->c_fid.Unique)););
952 /* Check for lookup of control object. */
953 if (IS_CTL_NAME(dvp, nm, len)) {
956 MARK_INT_SAT(CODA_LOOKUP_STATS);
960 if (len+1 > CODA_MAXNAMLEN) {
961 MARK_INT_FAIL(CODA_LOOKUP_STATS);
962 CODADEBUG(CODA_LOOKUP, myprintf(("name too long: lookup, %lx.%lx.%lx(%s)\n",
963 dcp->c_fid.Volume, dcp->c_fid.Vnode,
964 dcp->c_fid.Unique, nm)););
965 *vpp = (struct vnode *)0;
969 /* First try to look the file up in the cfs name cache */
970 /* lock the parent vnode? */
971 cp = coda_nc_lookup(dcp, nm, len, cred);
975 CODADEBUG(CODA_LOOKUP,
976 myprintf(("lookup result %d vpp %p\n",error,*vpp));)
979 /* The name wasn't cached, so we need to contact Venus */
980 error = venus_lookup(vtomi(dvp), &dcp->c_fid, nm, len, cred, td, &VFid, &vtype);
983 MARK_INT_FAIL(CODA_LOOKUP_STATS);
984 CODADEBUG(CODA_LOOKUP, myprintf(("lookup error on %lx.%lx.%lx(%s)%d\n",
985 dcp->c_fid.Volume, dcp->c_fid.Vnode, dcp->c_fid.Unique, nm, error));)
986 *vpp = (struct vnode *)0;
988 MARK_INT_SAT(CODA_LOOKUP_STATS);
989 CODADEBUG(CODA_LOOKUP,
990 myprintf(("lookup: vol %lx vno %lx uni %lx type %o result %d\n",
991 VFid.Volume, VFid.Vnode, VFid.Unique, vtype,
994 cp = make_coda_node(&VFid, dvp->v_mount, vtype);
997 /* enter the new vnode in the Name Cache only if the top bit isn't set */
998 /* And don't enter a new vnode for an invalid one! */
999 if (!(vtype & CODA_NOCACHE))
1000 coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp));
1006 * If we are creating, and this was the last name to be looked up,
1007 * and the error was ENOENT, then there really shouldn't be an
1008 * error and we can make the leaf NULL and return success. Since
1009 * this is supposed to work under Mach as well as NetBSD, we're
1010 * leaving this fn wrapped. We also must tell lookup/namei that
1011 * we need to save the last component of the name. (Create will
1012 * have to free the name buffer later...lucky us...)
1014 if ((cnp->cn_nameiop == NAMEI_CREATE || cnp->cn_nameiop == NAMEI_RENAME)
1017 error = EJUSTRETURN;
1022 * If the lookup went well, we need to (potentially?) unlock the
1023 * parent, and lock the child. We are only responsible for
1024 * checking to see if the parent is supposed to be unlocked before
1025 * we return. We must always lock the child (provided there is
1026 * one, and (the parent isn't locked or it isn't the same as the
1027 * parent.) Simple, huh? We can never leave the parent locked unless
1030 if (!error || (error == EJUSTRETURN)) {
1031 if ((cnp->cn_flags & CNP_LOCKPARENT) == 0) {
1032 if ((error = VOP_UNLOCK(dvp, 0, td))) {
1036 * The parent is unlocked. As long as there is a child,
1037 * lock it without bothering to check anything else.
1040 if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, td))) {
1041 printf("coda_lookup: ");
1042 panic("unlocked parent but couldn't lock child");
1046 /* The parent is locked, and may be the same as the child */
1047 if (*ap->a_vpp && (*ap->a_vpp != dvp)) {
1048 /* Different, go ahead and lock it. */
1049 if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, td))) {
1050 printf("coda_lookup: ");
1051 panic("unlocked parent but couldn't lock child");
1056 /* If the lookup failed, we need to ensure that the leaf is NULL */
1057 /* Don't change any locking? */
1065 coda_create(void *v)
1068 struct vop_old_create_args *ap = v;
1069 struct vnode *dvp = ap->a_dvp;
1070 struct cnode *dcp = VTOC(dvp);
1071 struct vattr *va = ap->a_vap;
1073 int mode = ap->a_vap->va_mode;
1074 struct vnode **vpp = ap->a_vpp;
1075 struct componentname *cnp = ap->a_cnp;
1076 struct ucred *cred = cnp->cn_cred;
1077 struct thread *td = cnp->cn_td;
1081 const char *nm = cnp->cn_nameptr;
1082 int len = cnp->cn_namelen;
1086 MARK_ENTRY(CODA_CREATE_STATS);
1088 /* All creates are exclusive XXX */
1089 /* I'm assuming the 'mode' argument is the file mode bits XXX */
1091 /* Check for create of control object. */
1092 if (IS_CTL_NAME(dvp, nm, len)) {
1093 *vpp = (struct vnode *)0;
1094 MARK_INT_FAIL(CODA_CREATE_STATS);
1098 error = venus_create(vtomi(dvp), &dcp->c_fid, nm, len, exclusive, mode, va, cred, td, &VFid, &attr);
1102 /* If this is an exclusive create, panic if the file already exists. */
1103 /* Venus should have detected the file and reported EEXIST. */
1105 if ((exclusive == 1) &&
1106 (coda_find(&VFid) != NULL))
1107 panic("cnode existed for newly created file!");
1109 cp = make_coda_node(&VFid, dvp->v_mount, attr.va_type);
1112 /* Update va to reflect the new attributes. */
1115 /* Update the attribute cache and mark it as valid */
1116 if (coda_attr_cache) {
1117 VTOC(*vpp)->c_vattr = attr;
1118 VTOC(*vpp)->c_flags |= C_VATTR;
1121 /* Invalidate the parent's attr cache, the modification time has changed */
1122 VTOC(dvp)->c_flags &= ~C_VATTR;
1124 /* enter the new vnode in the Name Cache */
1125 coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp));
1127 CODADEBUG(CODA_CREATE,
1128 myprintf(("create: (%lx.%lx.%lx), result %d\n",
1129 VFid.Volume, VFid.Vnode, VFid.Unique, error)); )
1131 *vpp = (struct vnode *)0;
1132 CODADEBUG(CODA_CREATE, myprintf(("create error %d\n", error));)
1136 if ((error = VOP_LOCK(*ap->a_vpp, LK_EXCLUSIVE, td))) {
1137 printf("coda_create: ");
1138 panic("unlocked parent but couldn't lock child");
1145 coda_remove(void *v)
1148 struct vop_old_remove_args *ap = v;
1149 struct vnode *dvp = ap->a_dvp;
1150 struct cnode *cp = VTOC(dvp);
1151 struct componentname *cnp = ap->a_cnp;
1152 struct ucred *cred = cnp->cn_cred;
1153 struct thread *td = cnp->cn_td;
1156 const char *nm = cnp->cn_nameptr;
1157 int len = cnp->cn_namelen;
1160 MARK_ENTRY(CODA_REMOVE_STATS);
1162 CODADEBUG(CODA_REMOVE, myprintf(("remove: %s in %lx.%lx.%lx\n",
1163 nm, cp->c_fid.Volume, cp->c_fid.Vnode,
1164 cp->c_fid.Unique)););
1166 /* Remove the file's entry from the CODA Name Cache */
1167 /* We're being conservative here, it might be that this person
1168 * doesn't really have sufficient access to delete the file
1169 * but we feel zapping the entry won't really hurt anyone -- dcs
1171 /* I'm gonna go out on a limb here. If a file and a hardlink to it
1172 * exist, and one is removed, the link count on the other will be
1173 * off by 1. We could either invalidate the attrs if cached, or
1174 * fix them. I'll try to fix them. DCS 11/8/94
1176 tp = coda_nc_lookup(VTOC(dvp), nm, len, cred);
1178 if (VALID_VATTR(tp)) { /* If attrs are cached */
1179 if (tp->c_vattr.va_nlink > 1) { /* If it's a hard link */
1180 tp->c_vattr.va_nlink--;
1184 coda_nc_zapfile(VTOC(dvp), nm, len);
1185 /* No need to flush it if it doesn't exist! */
1187 /* Invalidate the parent's attr cache, the modification time has changed */
1188 VTOC(dvp)->c_flags &= ~C_VATTR;
1190 /* Check for remove of control object. */
1191 if (IS_CTL_NAME(dvp, nm, len)) {
1192 MARK_INT_FAIL(CODA_REMOVE_STATS);
1196 error = venus_remove(vtomi(dvp), &cp->c_fid, nm, len, cred, td);
1198 CODADEBUG(CODA_REMOVE, myprintf(("in remove result %d\n",error)); )
1207 struct vop_old_link_args *ap = v;
1208 struct vnode *vp = ap->a_vp;
1209 struct cnode *cp = VTOC(vp);
1210 struct vnode *tdvp = ap->a_tdvp;
1211 struct cnode *tdcp = VTOC(tdvp);
1212 struct componentname *cnp = ap->a_cnp;
1213 struct ucred *cred = cnp->cn_cred;
1214 struct thread *td = cnp->cn_td;
1217 const char *nm = cnp->cn_nameptr;
1218 int len = cnp->cn_namelen;
1220 MARK_ENTRY(CODA_LINK_STATS);
1222 if (codadebug & CODADBGMSK(CODA_LINK)) {
1224 myprintf(("nb_link: vp fid: (%lx.%lx.%lx)\n",
1225 cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique));
1226 myprintf(("nb_link: tdvp fid: (%lx.%lx.%lx)\n",
1227 tdcp->c_fid.Volume, tdcp->c_fid.Vnode, tdcp->c_fid.Unique));
1230 if (codadebug & CODADBGMSK(CODA_LINK)) {
1231 myprintf(("link: vp fid: (%lx.%lx.%lx)\n",
1232 cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique));
1233 myprintf(("link: tdvp fid: (%lx.%lx.%lx)\n",
1234 tdcp->c_fid.Volume, tdcp->c_fid.Vnode, tdcp->c_fid.Unique));
1238 /* Check for link to/from control object. */
1239 if (IS_CTL_NAME(tdvp, nm, len) || IS_CTL_VP(vp)) {
1240 MARK_INT_FAIL(CODA_LINK_STATS);
1244 error = venus_link(vtomi(vp), &cp->c_fid, &tdcp->c_fid, nm, len, cred, td);
1246 /* Invalidate the parent's attr cache, the modification time has changed */
1247 VTOC(tdvp)->c_flags &= ~C_VATTR;
1248 VTOC(vp)->c_flags &= ~C_VATTR;
1250 CODADEBUG(CODA_LINK, myprintf(("in link result %d\n",error)); )
1256 coda_rename(void *v)
1259 struct vop_old_rename_args *ap = v;
1260 struct vnode *odvp = ap->a_fdvp;
1261 struct cnode *odcp = VTOC(odvp);
1262 struct componentname *fcnp = ap->a_fcnp;
1263 struct vnode *ndvp = ap->a_tdvp;
1264 struct cnode *ndcp = VTOC(ndvp);
1265 struct componentname *tcnp = ap->a_tcnp;
1266 struct ucred *cred = fcnp->cn_cred;
1267 struct thread *td = fcnp->cn_td;
1270 const char *fnm = fcnp->cn_nameptr;
1271 int flen = fcnp->cn_namelen;
1272 const char *tnm = tcnp->cn_nameptr;
1273 int tlen = tcnp->cn_namelen;
1275 MARK_ENTRY(CODA_RENAME_STATS);
1277 /* Hmmm. The vnodes are already looked up. Perhaps they are locked?
1278 This could be Bad. XXX */
1279 #ifdef OLD_DIAGNOSTIC
1280 if ((fcnp->cn_cred != tcnp->cn_cred) || (fcnp->cn_td != tcnp->cn_td))
1282 panic("coda_rename: component names don't agree");
1286 /* Check for rename involving control object. */
1287 if (IS_CTL_NAME(odvp, fnm, flen) || IS_CTL_NAME(ndvp, tnm, tlen)) {
1288 MARK_INT_FAIL(CODA_RENAME_STATS);
1292 /* Problem with moving directories -- need to flush entry for .. */
1294 struct cnode *ovcp = coda_nc_lookup(VTOC(odvp), fnm, flen, cred);
1296 struct vnode *ovp = CTOV(ovcp);
1298 (ovp->v_type == VDIR)) /* If it's a directory */
1299 coda_nc_zapfile(VTOC(ovp),"..", 2);
1303 /* Remove the entries for both source and target files */
1304 coda_nc_zapfile(VTOC(odvp), fnm, flen);
1305 coda_nc_zapfile(VTOC(ndvp), tnm, tlen);
1307 /* Invalidate the parent's attr cache, the modification time has changed */
1308 VTOC(odvp)->c_flags &= ~C_VATTR;
1309 VTOC(ndvp)->c_flags &= ~C_VATTR;
1311 if (flen+1 > CODA_MAXNAMLEN) {
1312 MARK_INT_FAIL(CODA_RENAME_STATS);
1317 if (tlen+1 > CODA_MAXNAMLEN) {
1318 MARK_INT_FAIL(CODA_RENAME_STATS);
1323 error = venus_rename(vtomi(odvp), &odcp->c_fid, &ndcp->c_fid, fnm, flen, tnm, tlen, cred, td);
1326 CODADEBUG(CODA_RENAME, myprintf(("in rename result %d\n",error));)
1328 /* It seems to be incumbent on us to drop locks on all four vnodes */
1329 /* From-vnodes are not locked, only ref'd. To-vnodes are locked. */
1335 if (ap->a_tvp == ndvp) {
1350 struct vop_old_mkdir_args *ap = v;
1351 struct vnode *dvp = ap->a_dvp;
1352 struct cnode *dcp = VTOC(dvp);
1353 struct componentname *cnp = ap->a_cnp;
1354 struct vattr *va = ap->a_vap;
1355 struct vnode **vpp = ap->a_vpp;
1356 struct ucred *cred = cnp->cn_cred;
1357 struct thread *td = cnp->cn_td;
1360 const char *nm = cnp->cn_nameptr;
1361 int len = cnp->cn_namelen;
1366 MARK_ENTRY(CODA_MKDIR_STATS);
1368 /* Check for mkdir of target object. */
1369 if (IS_CTL_NAME(dvp, nm, len)) {
1370 *vpp = (struct vnode *)0;
1371 MARK_INT_FAIL(CODA_MKDIR_STATS);
1375 if (len+1 > CODA_MAXNAMLEN) {
1376 *vpp = (struct vnode *)0;
1377 MARK_INT_FAIL(CODA_MKDIR_STATS);
1381 error = venus_mkdir(vtomi(dvp), &dcp->c_fid, nm, len, va, cred, td, &VFid, &ova);
1384 if (coda_find(&VFid) != NULL)
1385 panic("cnode existed for newly created directory!");
1388 cp = make_coda_node(&VFid, dvp->v_mount, va->va_type);
1391 /* enter the new vnode in the Name Cache */
1392 coda_nc_enter(VTOC(dvp), nm, len, cred, VTOC(*vpp));
1394 /* as a side effect, enter "." and ".." for the directory */
1395 coda_nc_enter(VTOC(*vpp), ".", 1, cred, VTOC(*vpp));
1396 coda_nc_enter(VTOC(*vpp), "..", 2, cred, VTOC(dvp));
1398 if (coda_attr_cache) {
1399 VTOC(*vpp)->c_vattr = ova; /* update the attr cache */
1400 VTOC(*vpp)->c_flags |= C_VATTR; /* Valid attributes in cnode */
1403 /* Invalidate the parent's attr cache, the modification time has changed */
1404 VTOC(dvp)->c_flags &= ~C_VATTR;
1406 CODADEBUG( CODA_MKDIR, myprintf(("mkdir: (%lx.%lx.%lx) result %d\n",
1407 VFid.Volume, VFid.Vnode, VFid.Unique, error)); )
1409 *vpp = (struct vnode *)0;
1410 CODADEBUG(CODA_MKDIR, myprintf(("mkdir error %d\n",error));)
1420 struct vop_old_rmdir_args *ap = v;
1421 struct vnode *dvp = ap->a_dvp;
1422 struct cnode *dcp = VTOC(dvp);
1423 struct componentname *cnp = ap->a_cnp;
1424 struct ucred *cred = cnp->cn_cred;
1425 struct thread *td = cnp->cn_td;
1428 const char *nm = cnp->cn_nameptr;
1429 int len = cnp->cn_namelen;
1432 MARK_ENTRY(CODA_RMDIR_STATS);
1434 /* Check for rmdir of control object. */
1435 if (IS_CTL_NAME(dvp, nm, len)) {
1436 MARK_INT_FAIL(CODA_RMDIR_STATS);
1440 /* We're being conservative here, it might be that this person
1441 * doesn't really have sufficient access to delete the file
1442 * but we feel zapping the entry won't really hurt anyone -- dcs
1445 * As a side effect of the rmdir, remove any entries for children of
1446 * the directory, especially "." and "..".
1448 cp = coda_nc_lookup(dcp, nm, len, cred);
1449 if (cp) coda_nc_zapParentfid(&(cp->c_fid), NOT_DOWNCALL);
1451 /* Remove the file's entry from the CODA Name Cache */
1452 coda_nc_zapfile(dcp, nm, len);
1454 /* Invalidate the parent's attr cache, the modification time has changed */
1455 dcp->c_flags &= ~C_VATTR;
1457 error = venus_rmdir(vtomi(dvp), &dcp->c_fid, nm, len, cred, td);
1459 CODADEBUG(CODA_RMDIR, myprintf(("in rmdir result %d\n", error)); )
1465 coda_symlink(void *v)
1468 struct vop_old_symlink_args *ap = v;
1469 struct vnode *tdvp = ap->a_dvp;
1470 struct cnode *tdcp = VTOC(tdvp);
1471 struct componentname *cnp = ap->a_cnp;
1472 struct vattr *tva = ap->a_vap;
1473 char *path = ap->a_target;
1474 struct ucred *cred = cnp->cn_cred;
1475 struct thread *td = cnp->cn_td;
1476 struct vnode **vpp = ap->a_vpp;
1480 * XXX I'm assuming the following things about coda_symlink's
1482 * t(foo) is the new name/parent/etc being created.
1483 * lname is the contents of the new symlink.
1485 char *nm = cnp->cn_nameptr;
1486 int len = cnp->cn_namelen;
1487 int plen = strlen(path);
1490 * Here's the strategy for the moment: perform the symlink, then
1491 * do a lookup to grab the resulting vnode. I know this requires
1492 * two communications with Venus for a new sybolic link, but
1493 * that's the way the ball bounces. I don't yet want to change
1494 * the way the Mach symlink works. When Mach support is
1495 * deprecated, we should change symlink so that the common case
1496 * returns the resultant vnode in a vpp argument.
1499 MARK_ENTRY(CODA_SYMLINK_STATS);
1501 /* Check for symlink of control object. */
1502 if (IS_CTL_NAME(tdvp, nm, len)) {
1503 MARK_INT_FAIL(CODA_SYMLINK_STATS);
1507 if (plen+1 > CODA_MAXPATHLEN) {
1508 MARK_INT_FAIL(CODA_SYMLINK_STATS);
1512 if (len+1 > CODA_MAXNAMLEN) {
1513 MARK_INT_FAIL(CODA_SYMLINK_STATS);
1518 error = venus_symlink(vtomi(tdvp), &tdcp->c_fid, path, plen, nm, len, tva, cred, td);
1520 /* Invalidate the parent's attr cache, the modification time has changed */
1521 tdcp->c_flags &= ~C_VATTR;
1524 error = VOP_OLD_LOOKUP(tdvp, vpp, cnp);
1527 CODADEBUG(CODA_SYMLINK, myprintf(("in symlink result %d\n",error)); )
1532 * Read directory entries.
1535 coda_readdir(void *v)
1538 struct vop_readdir_args *ap = v;
1539 struct vnode *vp = ap->a_vp;
1540 struct cnode *cp = VTOC(vp);
1541 struct uio *uiop = ap->a_uio;
1542 struct ucred *cred = ap->a_cred;
1543 int *eofflag = ap->a_eofflag;
1544 u_long **cookies = ap->a_cookies;
1545 int *ncookies = ap->a_ncookies;
1546 struct thread *td = ap->a_uio->uio_td;
1551 MARK_ENTRY(CODA_READDIR_STATS);
1553 CODADEBUG(CODA_READDIR, myprintf(("coda_readdir(%p, %d, %lld, %d)\n",
1554 (void *)uiop->uio_iov->iov_base,
1556 (long long)uiop->uio_offset,
1557 uiop->uio_segflg)); )
1559 /* Check for readdir of control object. */
1560 if (IS_CTL_VP(vp)) {
1561 MARK_INT_FAIL(CODA_READDIR_STATS);
1566 /* If directory is not already open do an "internal open" on it. */
1567 int opened_internally = 0;
1568 if (cp->c_ovp == NULL) {
1569 opened_internally = 1;
1570 MARK_INT_GEN(CODA_OPEN_STATS);
1571 error = VOP_OPEN(vp, FREAD, cred, NULL, td);
1572 printf("coda_readdir: Internally Opening %p\n", vp);
1574 printf("coda_readdir: VOP_OPEN on container failed %d\n", error);
1577 if (vp->v_type == VREG) {
1578 if (vp->v_object == NULL) {
1580 printf("coda_readdir: vnode %p has no VM object!\n", vp);
1584 if (error) return(error);
1587 /* Have UFS handle the call. */
1588 CODADEBUG(CODA_READDIR, myprintf(("indirect readdir: fid = (%lx.%lx.%lx), refcnt = %d\n",cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique, vp->v_usecount)); )
1589 error = VOP_READDIR(cp->c_ovp, uiop, cred, eofflag, ncookies,
1593 MARK_INT_FAIL(CODA_READDIR_STATS);
1595 MARK_INT_SAT(CODA_READDIR_STATS);
1597 /* Do an "internal close" if necessary. */
1598 if (opened_internally) {
1599 MARK_INT_GEN(CODA_CLOSE_STATS);
1600 VOP_CLOSE(vp, FREAD, td);
1608 * Convert from file system blocks to device blocks
1613 /* XXX on the global proc */
1614 struct vop_bmap_args *ap = v;
1618 cp = VTOC(ap->a_vp);
1622 ret = VOP_BMAP(cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb);
1623 printf("VOP_BMAP(cp->c_ovp %p, bn %p, vpp %p, bnp %p, ap->a_runp %p, ap->a_runb %p) = %d\n",
1624 cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb, ret);
1629 printf("coda_bmap: no container\n");
1636 * I don't think the following two things are used anywhere, so I've
1637 * commented them out
1639 * struct buf *async_bufhead;
1640 * int async_daemon_count;
1643 coda_strategy(struct vop_strategy_args *ap __unused)
1645 printf("coda_strategy: called ???\n");
1650 coda_reclaim(void *v)
1653 struct vop_reclaim_args *ap = v;
1654 struct vnode *vp = ap->a_vp;
1655 struct cnode *cp = VTOC(vp);
1660 * Forced unmount/flush will let vnodes with non zero use be destroyed!
1664 if (IS_UNMOUNTING(cp)) {
1666 if (VTOC(vp)->c_ovp) {
1667 if (IS_UNMOUNTING(cp))
1668 printf("coda_reclaim: c_ovp not void: vp %p, cp %p\n", vp, cp);
1672 #ifdef OLD_DIAGNOSTIC
1673 if (vp->v_usecount != 0)
1674 print("coda_reclaim: pushing active %p\n", vp);
1675 if (VTOC(vp)->c_ovp) {
1676 panic("coda_reclaim: c_ovp not void");
1680 coda_free(VTOC(vp));
1689 struct vop_lock_args *ap = v;
1690 struct vnode *vp = ap->a_vp;
1691 struct cnode *cp = VTOC(vp);
1692 struct thread *td = ap->a_td;
1698 if (coda_lockdebug) {
1699 myprintf(("Attempting lock on %lx.%lx.%lx\n",
1700 cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique));
1704 return (lockmgr(&vp->v_lock, ap->a_flags, NULL, td));
1706 return (debuglockmgr(&vp->v_lock, ap->a_flags, NULL, td,
1707 "coda_lock", vp->filename, vp->line));
1712 coda_unlock(void *v)
1715 struct vop_unlock_args *ap = v;
1716 struct vnode *vp = ap->a_vp;
1717 struct cnode *cp = VTOC(vp);
1718 struct thread *td = ap->a_td;
1723 if (coda_lockdebug) {
1724 myprintf(("Attempting unlock on %lx.%lx.%lx\n",
1725 cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique));
1728 return (lockmgr(&vp->v_lock, ap->a_flags | LK_RELEASE, NULL, td));
1732 coda_islocked(void *v)
1735 struct vop_islocked_args *ap = v;
1738 return (lockstatus(&ap->a_vp->v_lock, ap->a_td));
1741 /* How one looks up a vnode given a device/inode pair: */
1743 coda_grab_vnode(dev_t dev, ino_t ino, struct vnode **vpp)
1745 /* This is like VFS_VGET() or igetinode()! */
1749 if (!(mp = devtomp(dev))) {
1750 myprintf(("coda_grab_vnode: devtomp(%#lx) returns NULL\n",
1751 (u_long)dev2udev(dev)));
1755 /* XXX - ensure that nonzero-return means failure */
1756 error = VFS_VGET(mp,ino,vpp);
1758 myprintf(("coda_grab_vnode: iget/vget(%lx, %lu) returns %p, err %d\n",
1759 (u_long)dev2udev(dev), (u_long)ino, (void *)*vpp, error));
1766 print_vattr(struct vattr *attr)
1770 switch (attr->va_type) {
1804 myprintf(("attr: type %s mode %d uid %d gid %d fsid %d rdev %d\n",
1805 typestr, (int)attr->va_mode, (int)attr->va_uid,
1806 (int)attr->va_gid, (int)attr->va_fsid, (int)attr->va_rdev));
1808 myprintf((" fileid %d nlink %d size %d blocksize %d bytes %d\n",
1809 (int)attr->va_fileid, (int)attr->va_nlink,
1811 (int)attr->va_blocksize,(int)attr->va_bytes));
1812 myprintf((" gen %ld flags %ld vaflags %d\n",
1813 attr->va_gen, attr->va_flags, attr->va_vaflags));
1814 myprintf((" atime sec %d nsec %d\n",
1815 (int)attr->va_atime.tv_sec, (int)attr->va_atime.tv_nsec));
1816 myprintf((" mtime sec %d nsec %d\n",
1817 (int)attr->va_mtime.tv_sec, (int)attr->va_mtime.tv_nsec));
1818 myprintf((" ctime sec %d nsec %d\n",
1819 (int)attr->va_ctime.tv_sec, (int)attr->va_ctime.tv_nsec));
1822 /* How to print a ucred */
1824 print_cred(struct ucred *cred)
1829 myprintf(("ref %d\tuid %d\n",cred->cr_ref,cred->cr_uid));
1831 for (i=0; i < cred->cr_ngroups; i++)
1832 myprintf(("\tgroup %d: (%d)\n",i,cred->cr_groups[i]));
1838 * Return a vnode for the given fid.
1839 * If no cnode exists for this fid create one and put it
1840 * in a table hashed by fid.Volume and fid.Vnode. If the cnode for
1841 * this fid is already in the table return it (ref count is
1842 * incremented by coda_find. The cnode will be flushed from the
1843 * table when coda_inactive calls coda_unsave.
1846 make_coda_node(ViceFid *fid, struct mount *vfsp, short type)
1851 if ((cp = coda_find(fid)) == NULL) {
1857 err = getnewvnode(VT_CODA, vfsp, &vp, 0, 0);
1859 panic("coda: getnewvnode returned error %d\n", err);