2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 * vnodeops structure and Digital Unix specific ops and support routines.
14 #include "../afs/param.h" /* Should be always first */
16 #include "../afs/sysincludes.h" /* Standard vendor system headers */
17 #include "../afs/afsincludes.h" /* Afs-based standard headers */
18 #include "../afs/afs_stats.h" /* statistics */
19 #include <vm/vm_mmap.h>
20 #include <vm/vm_ubc.h>
21 #include "../afs/afs_cbqueue.h"
22 #include "../afs/nfsclient.h"
23 #include "../afs/afs_osidnlc.h"
26 extern int afs_lookup(), afs_create(), afs_noop(), afs_open(), afs_close();
27 extern int afs_access(), afs_getattr(), afs_setattr(), afs_badop();
28 extern int afs_fsync(), afs_seek(), afs_remove(), afs_link(), afs_rename();
29 extern int afs_mkdir(), afs_rmdir(), afs_symlink(), afs_readdir();
30 extern int afs_readlink(), afs_lockctl();
31 extern int vn_pathconf_default(), seltrue();
33 int mp_afs_lookup(), mp_afs_create(), mp_afs_open();
34 int mp_afs_access(), mp_afs_getattr(), mp_afs_setattr(), mp_afs_ubcrdwr();
35 int mp_afs_ubcrdwr(), mp_afs_mmap();
36 int mp_afs_fsync(), mp_afs_seek(), mp_afs_remove(), mp_afs_link();
37 int mp_afs_rename(), mp_afs_mkdir(), mp_afs_rmdir(), mp_afs_symlink();
38 int mp_afs_readdir(), mp_afs_readlink(), mp_afs_abortop(), mp_afs_inactive();
39 int mp_afs_reclaim(), mp_afs_bmap(), mp_afs_strategy(), mp_afs_print();
40 int mp_afs_page_read(), mp_afs_page_write(), mp_afs_swap(), mp_afs_bread();
41 int mp_afs_brelse(), mp_afs_lockctl(), mp_afs_syncdata(), mp_afs_close();
46 struct vnodeops Afs_vnodeops = {
49 afs_noop, /* vn_mknod */
57 mp_afs_ioctl, /* vn_ioctl */
58 seltrue, /* vn_select */
84 afs_noop, /* unLock */
85 afs_noop, /* get ext attrs */
86 afs_noop, /* set ext attrs */
87 afs_noop, /* del ext attrs */
90 struct vnodeops *afs_ops = &Afs_vnodeops;
92 /* vnode file operations, and our own */
94 extern int vn_write();
95 extern int vn_ioctl();
96 extern int vn_select();
97 extern int afs_closex();
99 struct fileops afs_fileops = {
107 mp_afs_lookup(adp, ndp)
109 struct nameidata *ndp;
113 code = afs_lookup(adp, ndp);
118 mp_afs_create(ndp, attrs)
119 struct nameidata *ndp;
124 code = afs_create(ndp, attrs);
129 mp_afs_open(avcp, aflags, acred)
130 struct vcache **avcp;
132 struct AFS_UCRED *acred;
136 code = afs_open(avcp, aflags, acred);
141 mp_afs_access(avc, amode, acred)
144 struct AFS_UCRED *acred;
148 code = afs_access(avc, amode, acred);
153 mp_afs_close(avc, flags, cred)
160 code = afs_close(avc, flags, cred);
165 mp_afs_getattr(avc, attrs, acred)
168 struct AFS_UCRED *acred;
172 code = afs_getattr(avc, attrs, acred);
177 mp_afs_setattr(avc, attrs, acred)
180 struct AFS_UCRED *acred;
184 code = afs_setattr(avc, attrs, acred);
189 mp_afs_fsync(avc, fflags, acred, waitfor)
192 struct AFS_UCRED *acred;
197 code = afs_fsync(avc, fflags, acred, waitfor);
203 struct nameidata *ndp;
207 code = afs_remove(ndp);
212 mp_afs_link(avc, ndp)
214 struct nameidata *ndp;
218 code = afs_link(avc, ndp);
223 mp_afs_rename(fndp, tndp)
224 struct nameidata *fndp, *tndp;
228 code = afs_rename(fndp, tndp);
233 mp_afs_mkdir(ndp, attrs)
234 struct nameidata *ndp;
239 code = afs_mkdir(ndp, attrs);
245 struct nameidata *ndp;
249 code = afs_rmdir(ndp);
254 mp_afs_symlink(ndp, attrs, atargetName)
255 struct nameidata *ndp;
257 register char *atargetName;
261 code = afs_symlink(ndp, attrs, atargetName);
266 mp_afs_readdir(avc, auio, acred, eofp)
269 struct AFS_UCRED *acred;
274 code = afs_readdir(avc, auio, acred, eofp);
279 mp_afs_readlink(avc, auio, acred)
282 struct AFS_UCRED *acred;
286 code = afs_readlink(avc, auio, acred);
291 mp_afs_lockctl(avc, af, flag, acred, clid, offset)
294 struct AFS_UCRED *acred;
301 code = afs_lockctl(avc, af, flag, acred, clid, offset);
311 code = afs_closex(afd);
316 mp_afs_seek(avc, oldoff, newoff, cred)
318 off_t oldoff, newoff;
321 if ((int) newoff < 0)
328 struct nameidata *ndp;
333 mp_afs_inactive(avc, acred)
334 register struct vcache *avc;
335 struct AFS_UCRED *acred;
338 afs_InactiveVCache(avc, acred);
355 mp_afs_page_read(avc, uio, acred)
361 struct vrequest treq;
364 error = afs_rdwr(avc, uio, UIO_READ, 0, acred);
365 afs_Trace3(afs_iclSetp, CM_TRACE_PAGE_READ, ICL_TYPE_POINTER, avc,
366 ICL_TYPE_INT32, error, ICL_TYPE_INT32, avc->states);
369 } else if ((avc->states & CWired) == 0) {
370 afs_InitReq(&treq, acred);
371 ObtainWriteLock(&avc->lock,161);
372 afs_Wire(avc, &treq);
373 ReleaseWriteLock(&avc->lock);
380 mp_afs_page_write(avc, uio, acred, pager, offset)
384 memory_object_t pager;
390 error = afs_rdwr(avc, uio, UIO_WRITE, 0, acred);
391 afs_Trace3(afs_iclSetp, CM_TRACE_PAGE_WRITE, ICL_TYPE_POINTER, avc,
392 ICL_TYPE_INT32, error, ICL_TYPE_INT32, avc->states);
402 mp_afs_ubcrdwr(avc, uio, ioflag, cred)
408 register afs_int32 code;
410 afs_int32 fileBase, size, cnt=0;
412 register afs_int32 tsize;
413 register afs_int32 pageOffset;
415 struct vrequest treq;
416 int rw = uio->uio_rw;
420 afs_int32 save_resid;
426 afs_InitReq(&treq, cred);
427 if (AFS_NFSXLATORREQ(cred) && rw == UIO_READ) {
428 if (!afs_AccessOK(avc, PRSFS_READ, &treq,
429 CHECK_MODE_BITS|CMB_ALLOW_EXEC_AS_READ)) {
434 afs_Trace4(afs_iclSetp, CM_TRACE_VMRW, ICL_TYPE_POINTER, avc,
435 ICL_TYPE_INT32, (rw==UIO_WRITE? 1 : 0),
436 ICL_TYPE_LONG, uio->uio_offset,
437 ICL_TYPE_LONG, uio->uio_resid);
438 code = afs_VerifyVCache(avc, &treq);
440 code = afs_CheckCode(code, &treq, 35);
444 if (vType(avc) != VREG) {
446 return EISDIR; /* can't read or write other things */
448 afs_BozonLock(&avc->pvnLock, avc);
449 osi_FlushPages(avc); /* hold bozon lock, but not basic vnode lock */
450 ObtainWriteLock(&avc->lock,162);
451 /* adjust parameters when appending files */
452 if ((ioflag & IO_APPEND) && uio->uio_rw == UIO_WRITE)
453 uio->uio_offset = avc->m.Length; /* write at EOF position */
454 if (uio->uio_rw == UIO_WRITE) {
455 avc->states |= CDirty;
459 * before starting any I/O, we must ensure that the file is big enough
460 * to hold the results (since afs_putpage will be called to force
463 size = uio->afsio_resid + uio->afsio_offset; /* new file size */
464 if (size > avc->m.Length) avc->m.Length = size; /* file grew */
465 avc->m.Date = osi_Time(); /* Set file date (for ranlib) */
466 if (uio->afsio_resid > PAGE_SIZE)
467 cnt = uio->afsio_resid / PAGE_SIZE;
468 save_resid = uio->afsio_resid;
473 * compute the amount of data to move into this block,
474 * based on uio->afsio_resid.
476 size = uio->afsio_resid; /* transfer size */
477 fileBase = uio->afsio_offset; /* start file position */
478 pageBase = fileBase & ~(PAGE_SIZE-1); /* file position of the page */
479 pageOffset = fileBase & (PAGE_SIZE-1); /* start offset within page */
480 tsize = PAGE_SIZE-pageOffset; /* amount left in this page */
482 * we'll read tsize bytes,
483 * but first must make sure tsize isn't too big
485 if (tsize > size) tsize = size; /* don't read past end of request */
486 eof = 0; /* flag telling us if we hit the EOF on the read */
487 if (uio->uio_rw == UIO_READ) { /* we're doing a read operation */
488 /* don't read past EOF */
489 if (tsize + fileBase > avc->m.Length) {
490 tsize = avc->m.Length - fileBase;
491 eof = 1; /* we did hit the EOF */
492 if (tsize < 0) tsize = 0; /* better safe than sorry */
495 if (tsize <= 0) break; /* nothing to transfer, we're done */
497 /* Purge dirty chunks of file if there are too many dirty chunks.
498 * Inside the write loop, we only do this at a chunk boundary.
499 * Clean up partial chunk if necessary at end of loop.
501 if (uio->uio_rw == UIO_WRITE && counter > 0
502 && AFS_CHUNKOFFSET(fileBase) == 0) {
503 code = afs_DoPartialWrite(avc, &treq);
504 avc->states |= CDirty;
512 ReleaseWriteLock(&avc->lock);
515 code = ubc_lookup(((struct vnode *)avc)->v_object, pageBase,
516 PAGE_SIZE, PAGE_SIZE, &page, &flags, NULL);
518 code = ubc_lookup(((struct vnode *)avc)->v_object, pageBase,
519 PAGE_SIZE, PAGE_SIZE, &page, &flags);
522 ObtainWriteLock(&avc->lock,163);
527 if (flags & B_NOCACHE) {
529 No page found. We should not read the page in if
530 1. the write starts on a page edge (ie, pageoffset == 0)
532 1. we will fill the page (ie, size == PAGESIZE), or
533 2. we are writing past eof
535 if ((uio->uio_rw == UIO_WRITE) &&
536 ((pageOffset == 0 && (size == PAGE_SIZE || fileBase >= avc->m.Length)))) {
537 struct vnode *vp = (struct vnode *)avc;
538 /* we're doing a write operation past eof; no need to read it */
541 ubc_page_zero(page, 0, PAGE_SIZE);
542 ubc_page_release(page, B_DONE);
545 /* page wasn't cached, read it in. */
549 bp = ubc_bufalloc(page, 1, PAGE_SIZE, 1, B_READ);
552 bp->b_vp = (struct vnode *)avc;
553 bp->b_blkno = btodb(pageBase);
554 ReleaseWriteLock(&avc->lock);
555 code = afs_ustrategy(bp, cred); /* do the I/O */
556 ObtainWriteLock(&avc->lock,164);
562 ubc_page_release(page, 0);
570 data = ubc_load(page, pageOffset, page_size);
572 ReleaseWriteLock(&avc->lock); /* uiomove may page fault */
574 code = uiomove(data+pageOffset, tsize, uio);
575 ubc_unload(page, pageOffset, page_size);
576 if (uio->uio_rw == UIO_WRITE) {
579 /* Mark the page dirty and release it to avoid a deadlock
580 * in ubc_dirty_kluster when more than one process writes
581 * this page at the same time. */
582 toffset = page->pg_offset;
584 ubc_page_release(page, flags);
591 /* We released the page, so we can get a null page
592 * list if another thread calls the strategy routine.
594 pl = ubc_dirty_kluster(((struct vnode *)avc)->v_object,
595 NULL, toffset, 0, B_WANTED, FALSE, &kpcnt);
597 bp = ubc_bufalloc(pl, 1, PAGE_SIZE, 1, B_WRITE);
599 bp->b_vp = (struct vnode *)avc;
600 bp->b_blkno = btodb(pageBase);
602 code = afs_ustrategy(bp, cred); /* do the I/O */
607 ObtainWriteLock(&avc->lock,415);
613 ubc_page_release(page, flags);
616 ObtainWriteLock(&avc->lock,165);
618 * If reading at a chunk boundary, start prefetch of next chunk.
620 if (uio->uio_rw == UIO_READ
621 && (counter == 0 || AFS_CHUNKOFFSET(fileBase) == 0)) {
622 tdc = afs_FindDCache(avc, fileBase);
624 if (!(tdc->flags & DFNextStarted))
625 afs_PrefetchChunk(avc, tdc, cred, &treq);
633 afs_FakeClose(avc, cred);
634 if (uio->uio_rw == UIO_WRITE && code == 0 && (avc->states & CDirty)) {
635 code = afs_DoPartialWrite(avc, &treq);
637 ReleaseWriteLock(&avc->lock);
638 afs_BozonUnlock(&avc->pvnLock, avc);
639 if (DO_FLUSH || (!newpage && (cnt < 10))) {
641 ubc_flush_dirty(((struct vnode *)avc)->v_object, flags);
645 ObtainSharedLock(&avc->lock, 409);
648 code = avc->vc_error;
651 /* This is required since we may still have dirty pages after the write.
652 * I could just let close do the right thing, but stat's before the close
653 * return the wrong length.
655 if (code == EDQUOT || code == ENOSPC) {
656 uio->uio_resid = save_resid;
657 UpgradeSToWLock(&avc->lock, 410);
658 osi_ReleaseVM(avc, cred);
659 ConvertWToSLock(&avc->lock);
661 ReleaseSharedLock(&avc->lock);
663 if (!code && (ioflag & IO_SYNC) && (uio->uio_rw == UIO_WRITE)
664 && !AFS_NFSXLATORREQ(cred)) {
665 code = afs_fsync(avc, 0, cred, 0);
668 code = afs_CheckCode(code, &treq, 36);
674 mp_afs_ioctl(struct vnode *vp, int com, caddr_t data, int fflag,
675 struct ucred *cred, int *retval)
681 * Now for some bad news. Since we artificially hold on to vnodes by doing
682 * and extra VNHOLD in afs_NewVCache(), there is no way for us to know
683 * when we need to flush the pages when a program exits. Particularly
684 * if it closes the file after mapping it R/W.
688 mp_afs_mmap(avc, offset, map, addrp, len, prot, maxprot, flags, cred)
689 register struct vcache *avc;
699 struct vp_mmap_args args;
700 register struct vp_mmap_args *ap = &args;
701 struct vnode *vp = (struct vnode *)avc;
703 struct vrequest treq;
705 extern kern_return_t u_vp_create();
709 afs_InitReq(&treq, cred);
710 code = afs_VerifyVCache(avc, &treq);
712 code = afs_CheckCode(code, &treq, 37);
716 afs_BozonLock(&avc->pvnLock, avc);
717 osi_FlushPages(avc); /* ensure old pages are gone */
718 afs_BozonUnlock(&avc->pvnLock, avc);
719 ObtainWriteLock(&avc->lock,166);
720 avc->states |= CMAPPED;
721 ReleaseWriteLock(&avc->lock);
722 ap->a_offset = offset;
726 ap->a_maxprot = maxprot;
729 code = u_vp_create(map, vp->v_object, (vm_offset_t) ap);
731 code = afs_CheckCode(code, &treq, 38);
737 int mp_afs_getpage(vop, offset, len, protp, pl, plsz,
751 struct vm_policy *policy;
759 register afs_int32 code;
760 struct vrequest treq;
762 int i, pages = (len + PAGE_SIZE - 1) >> page_shift;
766 struct vcache *avc = (struct vcache *)vop->vu_vp;
768 /* first, obtain the proper lock for the VM system */
771 afs_InitReq(&treq, cred);
772 code = afs_VerifyVCache(avc, &treq);
775 code = afs_CheckCode(code, &treq, 39); /* failed to get it */
780 /* clean all dirty pages for this vnode */
782 ubc_flush_dirty(vop,0);
785 afs_BozonLock(&avc->pvnLock, avc);
786 ObtainWriteLock(&avc->lock,167);
787 afs_Trace4(afs_iclSetp, CM_TRACE_PAGEIN, ICL_TYPE_POINTER, avc,
788 ICL_TYPE_LONG, offset, ICL_TYPE_LONG, len,
789 ICL_TYPE_INT32, (int) rw);
790 for (i = 0; i < pages; i++) {
792 off = offset + PAGE_SIZE * i;
793 if (protp) protp[i] = 0;
795 ReleaseWriteLock(&avc->lock);
798 code = ubc_lookup(((struct vnode *)avc)->v_object, off,
799 PAGE_SIZE, PAGE_SIZE, pagep, &flags, NULL);
801 code = ubc_lookup(((struct vnode *)avc)->v_object, off,
802 PAGE_SIZE, PAGE_SIZE, pagep, &flags);
805 ObtainWriteLock(&avc->lock,168);
809 if(flags & B_NOCACHE) { /* if (page) */
810 if ((rw & B_WRITE) && (offset+len >= avc->m.Length)) {
811 struct vnode *vp = (struct vnode *)avc;
812 /* we're doing a write operation past eof; no need to read it */
814 ubc_page_zero(*pagep, 0, PAGE_SIZE);
815 ubc_page_release(*pagep, B_DONE);
818 /* page wasn't cached, read it in. */
822 bp = ubc_bufalloc(*pagep, 1, PAGE_SIZE, 1, B_READ);
825 bp->b_vp = (struct vnode *)avc;
826 bp->b_blkno = btodb(off);
827 ReleaseWriteLock(&avc->lock);
828 code = afs_ustrategy(bp, cred); /* do the I/O */
829 ObtainWriteLock(&avc->lock,169);
835 ubc_page_release(pl[i], 0);
841 if ((rw & B_READ) == 0) {
844 ubc_page_dirty(pl[i], 0);
846 ubc_page_dirty(pl[i]);
850 if (protp && (flags & B_DIRTY) == 0) {
851 protp[i] = VM_PROT_WRITE;
856 pl[i] = VM_PAGE_NULL;
857 ReleaseWriteLock(&avc->lock);
858 afs_BozonUnlock(&avc->pvnLock, avc);
859 afs_Trace3(afs_iclSetp, CM_TRACE_PAGEINDONE, ICL_TYPE_INT32, code,
860 ICL_TYPE_POINTER, *pagep, ICL_TYPE_INT32, flags);
861 code = afs_CheckCode(code, &treq, 40);
867 int mp_afs_putpage(vop, pl, pcnt, flags, cred)
874 register afs_int32 code=0;
875 struct vcache *avc = (struct vcache *)vop->vu_vp;
876 struct vnode *vp = (struct vnode *)avc;
880 afs_Trace4(afs_iclSetp, CM_TRACE_PAGEOUT, ICL_TYPE_POINTER, avc,
881 ICL_TYPE_INT32, pcnt, ICL_TYPE_INT32, vp->v_flag,
882 ICL_TYPE_INT32, flags);
886 if (vp->v_flag & VXLOCK) {
888 for (i = 0; i < pcnt; i++) {
889 ubc_page_release(pl[i], B_DONE|B_DIRTY);
890 pl[i] = VM_PAGE_NULL;
899 /* first, obtain the proper lock for the VM system */
900 afs_BozonLock(&avc->pvnLock, avc);
901 ObtainWriteLock(&avc->lock,170);
902 for (i = 0; i < pcnt; i++) {
903 vm_page_t page = pl[i];
908 bp = ubc_bufalloc(page, 1, PAGE_SIZE, 1, B_WRITE);
911 bp->b_vp = (struct vnode *)avc;
912 bp->b_blkno = btodb(page->pg_offset);
913 ReleaseWriteLock(&avc->lock);
914 code = afs_ustrategy(bp, cred); /* do the I/O */
915 ObtainWriteLock(&avc->lock,171);
922 pl[i] = VM_PAGE_NULL;
926 ReleaseWriteLock(&avc->lock);
927 afs_BozonUnlock(&avc->pvnLock, avc);
928 afs_Trace2(afs_iclSetp, CM_TRACE_PAGEOUTDONE, ICL_TYPE_INT32, code,
929 ICL_TYPE_INT32, avc->m.Length);
935 int mp_afs_swap(avc, swapop, argp)
943 int mp_afs_syncdata(avc, flag, offset, length, cred)
950 /* NFS V3 makes this call, ignore it. We'll sync the data in afs_fsync. */
951 if (AFS_NFSXLATORREQ(cred))
957 /* a freelist of one */
958 struct buf *afs_bread_freebp = 0;
961 * Only rfs_read calls this, and it only looks at bp->b_un.b_addr.
962 * Thus we can use fake bufs (ie not from the real buffer pool).
964 mp_afs_bread(vp, lbn, bpp, cred)
970 int offset, fsbsize, error;
976 AFS_STATCNT(afs_bread);
977 fsbsize = vp->v_vfsp->vfs_bsize;
978 offset = lbn * fsbsize;
979 if (afs_bread_freebp) {
980 bp = afs_bread_freebp;
981 afs_bread_freebp = 0;
983 bp = (struct buf *) AFS_KALLOC(sizeof(*bp));
984 bp->b_un.b_addr = (caddr_t) AFS_KALLOC(fsbsize);
987 iov.iov_base = bp->b_un.b_addr;
988 iov.iov_len = fsbsize;
989 uio.afsio_iov = &iov;
990 uio.afsio_iovcnt = 1;
991 uio.afsio_seg = AFS_UIOSYS;
992 uio.afsio_offset = offset;
993 uio.afsio_resid = fsbsize;
995 error = afs_read((struct vcache *)vp, &uio, cred, lbn, bpp, 0);
997 afs_bread_freebp = bp;
1002 afs_bread_freebp = bp;
1004 *(struct buf **)&bp->b_vp = bp; /* mark as fake */
1012 mp_afs_brelse(vp, bp)
1017 AFS_STATCNT(afs_brelse);
1018 if ((struct buf *)bp->b_vp != bp) { /* not fake */
1020 } else if (afs_bread_freebp) {
1021 AFS_KFREE(bp->b_un.b_addr, vp->v_vfsp->vfs_bsize);
1022 AFS_KFREE(bp, sizeof(*bp));
1024 afs_bread_freebp = bp;
1030 mp_afs_bmap(avc, abn, anvp, anbn)
1031 register struct vcache *avc;
1032 afs_int32 abn, *anbn;
1033 struct vcache **anvp;
1036 AFS_STATCNT(afs_bmap);
1040 *anbn = abn * (8192 / DEV_BSIZE); /* in 512 byte units */
1047 mp_afs_strategy (abp)
1048 register struct buf *abp;
1050 register afs_int32 code;
1053 AFS_STATCNT(afs_strategy);
1054 code = afs_osi_MapStrategy(afs_ustrategy, abp);
1060 mp_afs_refer(vm_ubc_object_t vop)
1066 mp_afs_release(vm_ubc_object_t vop)
1072 mp_afs_write_check(vm_ubc_object_t vop, vm_page_t pp)
1077 #ifdef AFS_DUX50_ENV
1079 mp_afs_objtovp(vm_ubc_object_t vop, struct vnode **vp)
1086 mp_afs_setpgstamp(vm_page_t pp, unsigned int tick)
1088 pp->pg_stamp = tick;
1094 struct vfs_ubcops afs_ubcops = {
1095 mp_afs_refer, /* refer vnode */
1096 mp_afs_release, /* release vnode */
1097 mp_afs_getpage, /* get page */
1098 mp_afs_putpage, /* put page */
1099 mp_afs_write_check, /* check writablity */
1100 #ifdef AFS_DUX50_ENV
1101 mp_afs_objtovp, /* get vnode pointer */
1102 mp_afs_setpgstamp /* set page stamp */
1108 * Cover function for lookup name using OSF equivalent, namei()
1110 * Note, the result vnode (ni_vp) in the namei data structure is remains
1111 * locked after return.
1113 lookupname(namep, seg, follow, dvpp, cvpp)
1114 char *namep; /* path name */
1115 int seg; /* address space containing name */
1116 int follow; /* follow symbolic links */
1117 struct vnode **dvpp; /* result, containing parent vnode */
1118 struct vnode **cvpp; /* result, containing final component vnode */
1120 /* Should I use free-bee in u-area? */
1121 struct nameidata *ndp = &u.u_nd;
1124 ndp->ni_nameiop = ((follow) ? (LOOKUP|FOLLOW) : (LOOKUP));
1125 ndp->ni_segflg = seg;
1126 ndp->ni_dirp = namep;
1128 if (dvpp != (struct vnode **)0)
1129 *dvpp = ndp->ni_dvp;
1130 if (cvpp != (struct vnode **)0)