HCoop / hcoop / debian / openafs.git / blame
| Commit | Line | Data |
|---|---|---|
| 805e021f CE |
1 | /* |
| 2 | * Copyright 2000, International Business Machines Corporation and others. | |
| 3 | * All Rights Reserved. | |
| 4 | * | |
| 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 | |
| 8 | */ | |
| 9 | ||
| 10 | /* | |
| 11 | * System independent part of vget VFS call. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <afsconfig.h> | |
| 15 | #include "afs/param.h" | |
| 16 | ||
| 17 | ||
| 18 | #include "afs/sysincludes.h" /* Standard vendor system headers */ | |
| 19 | #include "afsincludes.h" /* Afs-based standard headers */ | |
| 20 | #include "afs/afs_stats.h" /* statistics stuff */ | |
| 21 | ||
| 22 | ||
| 23 | ||
| 24 | #if !defined(AFS_LINUX20_ENV) && !defined(AFS_DARWIN80_ENV) | |
| 25 | /* This is the common part of the vget VFS call. */ | |
| 26 | int | |
| 27 | afs_osi_vget(struct vcache **avcpp, struct fid *afidp, struct vrequest *areqp) | |
| 28 | { | |
| 29 | struct VenusFid vfid; | |
| 30 | struct SmallFid Sfid; | |
| 31 | struct cell *tcell; | |
| 32 | struct vrequest *treq = NULL; | |
| 33 | afs_int32 code = 0, cellindex; | |
| 34 | afs_int32 ret; | |
| 35 | ||
| 36 | memcpy((char *)&Sfid, afidp->fid_data, SIZEOF_SMALLFID); | |
| 37 | ||
| 38 | /* Need to extract fid from SmallFid. Will need a wild card option for | |
| 39 | * finding the right vcache entry. | |
| 40 | */ | |
| 41 | cellindex = (Sfid.CellAndUnique >> 24) & 0xff; | |
| 42 | tcell = afs_GetCellByIndex(cellindex, READ_LOCK); | |
| 43 | if (!tcell) | |
| 44 | return ENOENT; | |
| 45 | vfid.Cell = tcell->cellNum; | |
| 46 | afs_PutCell(tcell, WRITE_LOCK); | |
| 47 | vfid.Fid.Volume = Sfid.Volume; | |
| 48 | vfid.Fid.Vnode = Sfid.Vnode; | |
| 49 | vfid.Fid.Unique = Sfid.CellAndUnique & 0xffffff; | |
| 50 | ||
| 51 | /* First attempt to find in cache using wildcard. If that fails, | |
| 52 | * try the usual route to try to get the vcache from the server. | |
| 53 | * This could be done better by splitting out afs_FindVCache from | |
| 54 | * afs_GetVCache. | |
| 55 | */ | |
| 56 | ||
| 57 | ret = afs_NFSFindVCache(avcpp, &vfid); | |
| 58 | if (ret > 1) { | |
| 59 | /* More than one entry matches. */ | |
| 60 | code = ENOENT; | |
| 61 | } else if (ret == 0) { | |
| 62 | /* didn't find an entry. */ | |
| 63 | code = afs_CreateReq(&treq, afs_osi_credp); | |
| 64 | if (code == 0) { | |
| 65 | *avcpp = afs_GetVCache(&vfid, treq, NULL, NULL); | |
| 66 | afs_DestroyReq(treq); | |
| 67 | } | |
| 68 | } | |
| 69 | if (!*avcpp) { | |
| 70 | code = ENOENT; | |
| 71 | } | |
| 72 | ||
| 73 | return code; | |
| 74 | } | |
| 75 | #endif /* AFS_LINUX20_ENV */ |