static int
EvalMountData(char type, char *data, afs_uint32 states, afs_uint32 cellnum,
struct volume **avolpp, register struct vrequest *areq,
- afs_uint32 *acellidxp, afs_uint32 *avolnump, afs_uint32 *avnoidp)
+ afs_uint32 *acellidxp, afs_uint32 *avolnump,
+ afs_uint32 *avnoidp, afs_uint32 *auniqp)
{
struct volume *tvp = 0;
struct VenusFid tfid;
struct cell *tcell;
- char *cpos, *volnamep, *x;
- char *buf;
+ char *cpos, *volnamep;
+ char *buf, *endptr;
afs_int32 prefetch; /* 1=>None 2=>RO 3=>BK */
afs_int32 mtptCell, assocCell = 0, hac = 0;
afs_int32 samecell, roname, len;
- afs_uint32 volid, cellidx, vnoid = 0;
+ afs_uint32 volid = 0, cellidx, vnoid = 0, uniq = 0;
+ /* Start by figuring out and finding the cell */
cpos = afs_strchr(data, ':'); /* if cell name present */
if (cpos) {
- cellnum = 0;
volnamep = cpos + 1;
*cpos = 0;
- for (x = data; *x >= '0' && *x <= '9'; x++)
- cellnum = (cellnum * 10) + (*x - '0');
- if (cellnum && !*x)
+ if ((afs_strtoi_r(data, &endptr, &cellnum) == 0) &&
+ (endptr == cpos))
tcell = afs_GetCell(cellnum, READ_LOCK);
else {
tcell = afs_GetCellByName(data, READ_LOCK);
volnamep = data;
tcell = afs_GetCell(cellnum, READ_LOCK);
} else {
- /*printf("No cellname %s , or cellnum %d , returning ENODEV\n",
- data, cellnum);*/
+ /* No cellname or cellnum; return ENODEV */
return ENODEV;
}
if (!tcell) {
- /*printf("Lookup failed, returning ENODEV\n");*/
+ /* no cell found; return ENODEV */
return ENODEV;
}
}
afs_PutCell(tcell, READ_LOCK);
- cpos = afs_strrchr(volnamep, ':'); /* if vno present */
- if (cpos)
+ /* If there's nothing to look up, we can't proceed */
+ if (!*volnamep)
+ return ENODEV;
+
+ /* cell found. figure out volume */
+ cpos = afs_strchr(volnamep, ':');
+ if (cpos)
*cpos = 0;
+
/* Look for an all-numeric volume ID */
- volid = 0;
- for (x = volnamep; *x >= '0' && *x <= '9'; x++)
- volid = (volid * 10) + (*x - '0');
- if (cpos) {
- *cpos = ':';
- vnoid = 0;
- if (!*x) /* allow vno with numeric volid only */
- for (x = (cpos + 1); *x >= '0' && *x <= '9'; x++)
- vnoid = (vnoid * 10) + (*x - '0');
- if (*x)
- vnoid = 0;
- }
+ if ((afs_strtoi_r(volnamep, &endptr, &volid) == 0) &&
+ ((endptr == cpos) || (!*endptr)))
+ {
+ /* Ok. Is there a vnode and uniq? */
+ if (cpos) {
+ char *vnodep = (char *)(cpos + 1);
+ char *uniqp = NULL;
+ if ((!*vnodep) /* no vnode after colon */
+ || !(uniqp = afs_strchr(vnodep, ':')) /* no colon for uniq */
+ || (!*(++uniqp)) /* no uniq after colon */
+ || (afs_strtoi_r(vnodep, &endptr, &vnoid) != 0) /* bad vno */
+ || (*endptr != ':') /* bad vnode field */
+ || (afs_strtoi_r(uniqp, &endptr, &uniq) != 0) /* bad uniq */
+ || (*endptr)) /* anything after uniq */
+ {
+ *cpos = ':';
+ /* sorry. vnode and uniq, or nothing */
+ return ENODEV;
+ }
+ }
+ } else
+ volid = 0;
/*
* If the volume ID was all-numeric, and they didn't ask for a
* as-is. This is currently only used for handling name lookups
* in the dynamic mount directory.
*/
- if (!*x && !avolpp) {
- if (acellidxp)
- *acellidxp = cellidx;
- if (avolnump)
- *avolnump = volid;
- if (avnoidp)
- *avnoidp = vnoid;
- return 0;
+ if (volid && !avolpp) {
+ if (*cpos)
+ *cpos = ':';
+ goto done;
}
/*
* and don't second-guess them by forcing use of a RW volume when
* they gave the ID of something else.
*/
- if (!*x && type == '%') {
+ if (volid && type == '%') {
tfid.Fid.Volume = volid; /* remember BK volume */
tfid.Cell = mtptCell;
tvp = afs_GetVolume(&tfid, areq, WRITE_LOCK); /* get the new one */
- if (!tvp) {
- /*printf("afs_GetVolume failed - returning ENODEV");*/
- return ENODEV; /* oops, can't do it */
- }
+ if (cpos) /* one way or another we're done */
+ *cpos = ':';
+ if (!tvp)
+ return ENODEV; /* afs_GetVolume failed; return ENODEV */
goto done;
}
/* Get the volume struct. Unless this volume name has ".readonly" or
* ".backup" in it, this will get the volume struct for the RW volume.
* The RO volume will be prefetched if requested (but not returned).
+ * Set up to use volname first.
*/
- /*printf("Calling GetVolumeByName\n");*/
tvp = afs_GetVolumeByName(volnamep, mtptCell, prefetch, areq, WRITE_LOCK);
/* If no volume was found in this cell, try the associated linked cell */
}
osi_FreeSmallSpace(buf);
}
-
- if (!tvp) {
- /*printf("Couldn't find the volume\n");*/
+ /* done with volname */
+ if (cpos)
+ *cpos = ':';
+ if (!tvp)
return ENODEV; /* Couldn't find the volume */
- }
+ else
+ volid = tvp->volume;
/* Don't cross mountpoint from a BK to a BK volume */
if ((states & CBackup) && (tvp->states & VBackup)) {
if (acellidxp)
*acellidxp = cellidx;
if (avolnump)
- *avolnump = tvp->volume;
+ *avolnump = volid;
if (avnoidp)
*avnoidp = vnoid;
+ if (auniqp)
+ *auniqp = uniq;
if (avolpp)
*avolpp = tvp;
- else
+ else if (tvp)
afs_PutVolume(tvp, WRITE_LOCK);
return 0;
}
struct volume **avolpp, register struct vrequest *areq)
{
afs_int32 code;
- afs_uint32 avnoid;
+ afs_uint32 avnoid, auniq;
AFS_STATCNT(EvalMountPoint);
#ifdef notdef
/* Determine which cell and volume the mointpoint goes to */
code = EvalMountData(avc->linkData[0], avc->linkData + 1,
avc->f.states, avc->f.fid.Cell, avolpp, areq, 0, 0,
- &avnoid);
+ &avnoid, &auniq);
if (code) return code;
if (!avnoid)
avnoid = 1;
+ if (!auniq)
+ auniq = 1;
+
if (avc->mvid == 0)
avc->mvid =
(struct VenusFid *)osi_AllocSmallSpace(sizeof(struct VenusFid));
avc->mvid->Cell = (*avolpp)->cell;
avc->mvid->Fid.Volume = (*avolpp)->volume;
avc->mvid->Fid.Vnode = avnoid;
- avc->mvid->Fid.Unique = 1;
+ avc->mvid->Fid.Unique = auniq;
avc->f.states |= CMValid;
/* Used to: if the mount point is stored within a backup volume,
if (tvc->mvstat != 1)
return 0;
- /* Is the call to VerifyVCache really necessary? */
- code = afs_VerifyVCache(tvc, areq);
- if (code)
- goto done;
if (canblock) {
+ /* Is the call to VerifyVCache really necessary? */
+ code = afs_VerifyVCache(tvc, areq);
+ if (code)
+ goto done;
+
ObtainWriteLock(&tvc->lock, 599);
code = EvalMountPoint(tvc, NULL, &tvolp, areq);
ReleaseWriteLock(&tvc->lock);
int nentries; /* # of entries to prefetch */
int nskip; /* # of slots in the LRU queue to skip */
#ifdef AFS_DARWIN80_ENV
+ int npasses = 0;
struct vnode *lruvp;
#endif
struct vcache *lruvcp; /* vcache ptr of our goal pos in LRU queue */
* CBulkFetching state bit and the value in the file size.
* It is safe to set the status only if the CBulkFetching
* flag is still set and the value in the file size does
- * not change. NewBulkVCache sets us up.
+ * not change. NewBulkVCache sets us up for the new ones.
+ * Set up the rest here.
*
* Don't fetch status for dirty files. We need to
* preserve the value of the file size. We could
* flush the pages, but it wouldn't be worthwhile.
*/
+ if (!(tvcp->f.states & CBulkFetching)) {
+ tvcp->f.states |= CBulkFetching;
+ tvcp->f.m.Length = statSeqNo;
+ }
memcpy((char *)(fidsp + fidIndex), (char *)&tfid.Fid,
sizeof(*fidsp));
fidIndex++;
reskip:
nskip = afs_cacheStats / 2; /* preserved fraction of the cache */
ObtainReadLock(&afs_xvcache);
+#ifdef AFS_DARWIN80_ENV
+ reskip2:
+#endif
if (QEmpty(&VLRU)) {
/* actually a serious error, probably should panic. Probably will
* panic soon, oh well. */
for (tq = VLRU.next; tq != &VLRU; tq = QNext(tq)) {
if (--nskip <= 0) {
#ifdef AFS_DARWIN80_ENV
- if (!(QTOV(tq)->f.states & CDeadVnode))
+ if ((!(QTOV(tq)->f.states & CDeadVnode)&&!(QTOV(tq)->f.states & CVInit)))
#endif
break;
}
*/
retry = 0;
#ifdef AFS_DARWIN80_ENV
+ if (((lruvcp->f.states & CDeadVnode)||(lruvcp->f.states & CVInit))) {
+ if (npasses == 0) {
+ nskip = 1;
+ npasses++;
+ goto reskip2;
+ } else
+ panic("Can't find non-dead vnode in VLRU\n");
+ }
lruvp = AFSTOV(lruvcp);
if (vnode_get(lruvp)) /* this bumps ref count */
retry = 1;
* file. Leave the entry alone.
*/
if (!(tvcp->f.states & CBulkFetching) || (tvcp->f.m.Length != statSeqNo)) {
+#ifdef AFS_DARWIN80_ENV
+ int isdead = ((tvcp->f.states & CDeadVnode) ||
+ (tvcp->f.states & CVInit));
+#endif
flagIndex++;
ReleaseWriteLock(&tvcp->lock);
+#ifdef AFS_DARWIN80_ENV
+ if (!isdead) {
+ /* re-acquire the io&usecount that the other finalizevnode disposed of */
+ vnode_get(AFSTOV(tvcp));
+ vnode_ref(AFSTOV(tvcp));
+ }
+#endif
afs_PutVCache(tvcp);
continue;
}
*tvcp->mvid = dotdot;
}
+#ifdef AFS_DARWIN80_ENV
+ if (((lruvcp->f.states & CDeadVnode)||(lruvcp->f.states & CVInit)))
+ panic("vlru control point went dead\n");
+#endif
+
ObtainWriteLock(&afs_xvcache, 132);
if ((VLRU.next->prev != &VLRU) || (VLRU.prev->next != &VLRU)) {
refpanic("Bulkstat VLRU inconsistent2");
*/
if (!(tvcp->f.states & CBulkFetching) || (tvcp->f.m.Length != statSeqNo)) {
flagIndex++;
+#ifdef AFS_DARWIN80_ENV
+ if ((!(tvcp->f.states & CDeadVnode)&&!(tvcp->f.states & CVInit))) {
+ /* re-acquire the io&usecount that the other finalizevnode disposed of */
+ vnode_get(AFSTOV(tvcp));
+ vnode_ref(AFSTOV(tvcp));
+ }
+#endif
ReleaseWriteLock(&tvcp->lock);
ReleaseWriteLock(&afs_xcbhash);
afs_PutVCache(tvcp);
ReleaseWriteLock(&afs_xcbhash);
#ifdef AFS_DARWIN80_ENV
/* reclaim->FlushVCache will need xcbhash */
- if (tvcp->f.states & CDeadVnode) {
+ if (((tvcp->f.states & CDeadVnode)||(tvcp->f.states & CVInit))) {
/* passing in a parent hangs getting the vnode lock */
code = afs_darwin_finalizevnode(tvcp, NULL, NULL, 0, 1);
if (code) {
afs_DequeueCallback(tvcp);
if ((tvcp->f.states & CForeign) || (vType(tvcp) == VDIR))
osi_dnlc_purgedp(tvcp); /* if it (could be) a directory */
- } else
- /* re-acquire the usecount that finalizevnode disposed of */
+ } else {
+ /* re-acquire the io&usecount that finalizevnode disposed of */
+ vnode_get(AFSTOV(tvcp));
vnode_ref(AFSTOV(tvcp));
+ }
}
#endif
/* finally return the pointer into the LRU queue */
#ifdef AFS_DARWIN80_ENV
+ if (((lruvcp->f.states & CDeadVnode)||(lruvcp->f.states & CVInit)))
+ panic("vlru control point went dead before put\n");
AFS_GUNLOCK();
vnode_put(lruvp);
vnode_rele(lruvp);
tvcp = afs_FindVCache(&afid, &retry, 0 /* !stats&!lru */ );
ReleaseReadLock(&afs_xvcache);
} while (tvcp && retry);
- if (tvcp != NULL && (tvcp->f.states & CBulkFetching)
- && (tvcp->f.m.Length == statSeqNo)) {
- tvcp->f.states &= ~CBulkFetching;
- }
if (tvcp != NULL) {
+ if ((tvcp->f.states & CBulkFetching)
+ && (tvcp->f.m.Length == statSeqNo)) {
+ tvcp->f.states &= ~CBulkFetching;
+#ifdef AFS_DARWIN80_ENV
+ if ((!(tvcp->f.states & CDeadVnode)&&!(tvcp->f.states & CVInit))) {
+ /* re-acquire the io&usecount that finalizevnode dropped */
+ vnode_get(AFSTOV(tvcp));
+ vnode_ref(AFSTOV(tvcp));
+ }
+#endif
+ }
afs_PutVCache(tvcp);
}
+#ifdef AFS_DARWIN80_ENV
+ else {
+ if ((!(tvcp->f.states & CDeadVnode)&&!(tvcp->f.states & CVInit)))
+ osi_Panic("vnode finalized without clearing BulkFetching!");
+ }
+#endif
+
}
if (volp)
afs_PutVolume(volp, READ_LOCK);
}
/* was: (AFS_DEC_ENV) || defined(AFS_OSF30_ENV) || defined(AFS_NCR_ENV) */
+#ifdef AFS_DARWIN_ENV
+static int AFSDOBULK = 0;
+#else
static int AFSDOBULK = 1;
+#endif
int
#if defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
*/
if (afs_IsDynrootMount(adp)) {
struct VenusFid tfid;
- afs_uint32 cellidx, volid, vnoid;
+ afs_uint32 cellidx, volid, vnoid, uniq;
- code = EvalMountData('%', aname, 0, 0, NULL, &treq, &cellidx, &volid, &vnoid);
+ code = EvalMountData('%', aname, 0, 0, NULL, &treq, &cellidx, &volid, &vnoid, &uniq);
if (code)
goto done;
- afs_GetDynrootMountFid(&tfid);
- tfid.Fid.Vnode = VNUM_FROM_TYPEID(VN_TYPE_MOUNT, cellidx << 2);
- tfid.Fid.Unique = volid;
+ /* If a vnode was returned, it's not a real mount point */
+ if (vnoid > 1) {
+ struct cell *tcell = afs_GetCellByIndex(cellidx, READ_LOCK);
+ tfid.Cell = tcell->cellNum;
+ afs_PutCell(tcell, READ_LOCK);
+ tfid.Fid.Vnode = vnoid;
+ tfid.Fid.Volume = volid;
+ tfid.Fid.Unique = uniq;
+ } else {
+ afs_GetDynrootMountFid(&tfid);
+ tfid.Fid.Vnode = VNUM_FROM_TYPEID(VN_TYPE_MOUNT, cellidx << 2);
+ tfid.Fid.Unique = volid;
+ }
*avcp = tvc = afs_GetVCache(&tfid, &treq, NULL, NULL);
+ code = (tvc ? 0 : ENOENT);
hit = 1;
goto done;
}
/* if the vcache isn't usable, release it */
if (tvc && !(tvc->f.states & CStatd)) {
#ifndef AFS_FBSD80_ENV
- afs_PutVCache(tvc);
+ afs_PutVCache(tvc);
#endif
tvc = NULL;
}
git://git.openafs.org / openafs.git / blobdiff