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 * System independent part of vget VFS call.
14 #include <afsconfig.h>
15 #include "../afs/param.h"
19 #include "../afs/sysincludes.h" /* Standard vendor system headers */
20 #include "../afs/afsincludes.h" /* Afs-based standard headers */
21 #include "../afs/afs_stats.h" /* statistics stuff */
25 extern int afs_NFSRootOnly;
26 int afs_rootCellIndex = 0;
27 #if !defined(AFS_LINUX20_ENV)
28 /* This is the common part of the vget VFS call. */
29 int afs_osi_vget(struct vcache **avcpp, struct fid *afidp,
30 struct vrequest *areqp)
34 extern struct cell *afs_GetCellByIndex();
35 register struct cell *tcell;
37 register afs_int32 code = 0, cellindex;
40 memcpy((char *)&Sfid, afidp->fid_data, SIZEOF_SMALLFID);
42 Sfid.Vnode = afidp->fid_reserved;
44 if (afs_NFSRootOnly &&
45 Sfid.Volume == afs_rootFid.Fid.Volume &&
46 Sfid.Vnode == afs_rootFid.Fid.Vnode &&
47 (Sfid.CellAndUnique & 0xffffff) ==
48 (afs_rootFid.Fid.Unique & 0xffffff) &&
49 ((Sfid.CellAndUnique >> 24) & 0xff) == afs_rootCellIndex) {
53 /* Need to extract fid from SmallFid. Will need a wild card option for
54 * finding the right vcache entry.
57 cellindex = (Sfid.CellAndUnique >> 24) & 0xff;
58 tcell = afs_GetCellByIndex(cellindex, READ_LOCK, 0 /* don't refresh */);
62 vfid.Cell = tcell->cell;
63 afs_PutCell(tcell, WRITE_LOCK);
64 vfid.Fid.Volume = Sfid.Volume;
65 vfid.Fid.Vnode = Sfid.Vnode;
66 vfid.Fid.Unique = Sfid.CellAndUnique & 0xffffff;
70 /* First attempt to find in cache using wildcard. If that fails,
71 * try the usual route to try to get the vcache from the server.
72 * This could be done better by splitting out afs_FindVCache from
76 ret = afs_NFSFindVCache(avcpp, &vfid);
78 /* More than one entry matches. */
82 /* didn't find an entry. */
83 *avcpp = afs_GetVCache(&vfid, &treq, NULL, NULL);
91 #endif /* AFS_LINUX20_ENV */