#include "afs/nfsclient.h"
#include "afs/exporter.h"
#include "afs/afs_osidnlc.h"
+#include "afs/afs_dynroot.h"
extern struct DirEntry *afs_dir_GetBlob();
+extern struct vcache *afs_globalVp;
afs_int32 afs_bkvolpref = 0;
*
* NOTE: this function returns a held volume structure in *volpp if it returns 0!
*/
-int
-EvalMountPoint(register struct vcache *avc, struct vcache *advc,
- struct volume **avolpp, register struct vrequest *areq)
+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_int32 code;
struct volume *tvp = 0;
struct VenusFid tfid;
struct cell *tcell;
- char *cpos, *volnamep;
- char type, *buf;
+ char *cpos, *volnamep, *x;
+ char *buf;
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_STATCNT(EvalMountPoint);
-#ifdef notdef
- if (avc->mvid && (avc->states & CMValid))
- return 0; /* done while racing */
-#endif
- *avolpp = NULL;
- code = afs_HandleLink(avc, areq);
- if (code)
- return code;
-
- /* Determine which cell and volume the mointpoint goes to */
- type = avc->linkData[0]; /* '#'=>Regular '%'=>RW */
- cpos = afs_strchr(&avc->linkData[1], ':'); /* if cell name present */
+ cpos = afs_strchr(data, ':'); /* if cell name present */
if (cpos) {
+ cellnum = 0;
volnamep = cpos + 1;
*cpos = 0;
- tcell = afs_GetCellByName(&avc->linkData[1], READ_LOCK);
+ for (x = data; *x >= '0' && *x <= '9'; x++)
+ cellnum = (cellnum * 10) + (*x - '0');
+ if (cellnum && !*x)
+ tcell = afs_GetCell(cellnum, READ_LOCK);
+ else {
+ tcell = afs_GetCellByName(data, READ_LOCK);
+ cellnum = 0;
+ }
*cpos = ':';
+ } else if (cellnum) {
+ volnamep = data;
+ tcell = afs_GetCell(cellnum, READ_LOCK);
} else {
- volnamep = &avc->linkData[1];
- tcell = afs_GetCell(avc->fid.Cell, READ_LOCK);
+ /*printf("No cellname %s , or cellnum %d , returning ENODEV\n",
+ data, cellnum);*/
+ return ENODEV;
}
- if (!tcell)
+ if (!tcell) {
+ /*printf("Lookup failed, returning ENODEV\n");*/
return ENODEV;
+ }
+ cellidx = tcell->cellIndex;
mtptCell = tcell->cellNum; /* The cell for the mountpoint */
if (tcell->lcellp) {
hac = 1; /* has associated cell */
}
afs_PutCell(tcell, READ_LOCK);
+ cpos = afs_strrchr(volnamep, ':'); /* if vno present */
+ 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 the volume ID was all-numeric, and they didn't ask for a
+ * pointer to the volume structure, then just return the number
+ * 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 the volume ID was all-numeric, and the type was '%', then
+ * assume whoever made the mount point knew what they were doing,
+ * and don't second-guess them by forcing use of a RW volume when
+ * they gave the ID of something else.
+ */
+ if (!*x && 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 */
+ }
+ goto done;
+ }
+
/* Is volume name a "<n>.backup" or "<n>.readonly" name */
len = strlen(volnamep);
roname = ((len > 9) && (strcmp(&volnamep[len - 9], ".readonly") == 0))
|| ((len > 7) && (strcmp(&volnamep[len - 7], ".backup") == 0));
/* When we cross mountpoint, do we stay in the same cell */
- samecell = (avc->fid.Cell == mtptCell) || (hac
- && (avc->fid.Cell ==
- assocCell));
+ samecell = (cellnum == mtptCell) || (hac && (cellnum == assocCell));
/* Decide whether to prefetch the BK, or RO. Also means we want the BK or
* RO.
* want to prefetch the RO volume.
*/
if ((type == '#') && !roname) {
- if (afs_bkvolpref && samecell && (avc->states & CBackup))
+ if (afs_bkvolpref && samecell && (states & CBackup))
prefetch = 3; /* Prefetch the BK */
- else if (!samecell || (avc->states & CRO))
+ else if (!samecell || (states & CRO))
prefetch = 2; /* Prefetch the RO */
else
prefetch = 1; /* Do not prefetch */
* ".backup" in it, this will get the volume struct for the RW volume.
* The RO volume will be prefetched if requested (but not returned).
*/
+ /*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)
+ if (!tvp) {
+ /*printf("Couldn't find the volume\n");*/
return ENODEV; /* Couldn't find the volume */
+ }
/* Don't cross mountpoint from a BK to a BK volume */
- if ((avc->states & CBackup) && (tvp->states & VBackup)) {
+ if ((states & CBackup) && (tvp->states & VBackup)) {
afs_PutVolume(tvp, WRITE_LOCK);
return ENODEV;
}
return ENODEV; /* oops, can't do it */
}
+done:
+ if (acellidxp)
+ *acellidxp = cellidx;
+ if (avolnump)
+ *avolnump = tvp->volume;
+ if (avnoidp)
+ *avnoidp = vnoid;
+ if (avolpp)
+ *avolpp = tvp;
+ else
+ afs_PutVolume(tvp, WRITE_LOCK);
+ return 0;
+}
+
+int
+EvalMountPoint(register struct vcache *avc, struct vcache *advc,
+ struct volume **avolpp, register struct vrequest *areq)
+{
+ afs_int32 code;
+ afs_uint32 avnoid;
+
+ AFS_STATCNT(EvalMountPoint);
+#ifdef notdef
+ if (avc->mvid && (avc->f.states & CMValid))
+ return 0; /* done while racing */
+#endif
+ *avolpp = NULL;
+ code = afs_HandleLink(avc, areq);
+ if (code)
+ return code;
+
+ /* 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);
+ if (code) return code;
+
+ if (!avnoid)
+ avnoid = 1;
+
if (avc->mvid == 0)
avc->mvid =
(struct VenusFid *)osi_AllocSmallSpace(sizeof(struct VenusFid));
- avc->mvid->Cell = tvp->cell;
- avc->mvid->Fid.Volume = tvp->volume;
- avc->mvid->Fid.Vnode = 1;
+ avc->mvid->Cell = (*avolpp)->cell;
+ avc->mvid->Fid.Volume = (*avolpp)->volume;
+ avc->mvid->Fid.Vnode = avnoid;
avc->mvid->Fid.Unique = 1;
- avc->states |= CMValid;
+ avc->f.states |= CMValid;
/* Used to: if the mount point is stored within a backup volume,
* then we should only update the parent pointer information if
*
* Next two lines used to be under this if:
*
- * if (!(avc->states & CBackup) || tvp->dotdot.Fid.Volume == 0)
+ * if (!(avc->f.states & CBackup) || tvp->dotdot.Fid.Volume == 0)
*
* Now: update mount point back pointer on every call, so that we handle
* multiple mount points better. This way, when du tries to go back
* cd'ing via a new path to a volume will reset the ".." pointer
* to the new path.
*/
- tvp->mtpoint = avc->fid; /* setup back pointer to mtpoint */
+ (*avolpp)->mtpoint = avc->f.fid; /* setup back pointer to mtpoint */
+
if (advc)
- tvp->dotdot = advc->fid;
+ (*avolpp)->dotdot = advc->f.fid;
- *avolpp = tvp;
return 0;
}
if (code)
goto done;
if (tvolp) {
- tvolp->dotdot = tvc->fid;
- tvolp->dotdot.Fid.Vnode = tvc->parentVnode;
- tvolp->dotdot.Fid.Unique = tvc->parentUnique;
+ tvolp->dotdot = tvc->f.fid;
+ tvolp->dotdot.Fid.Vnode = tvc->f.parent.vnode;
+ tvolp->dotdot.Fid.Unique = tvc->f.parent.unique;
}
}
- if (tvc->mvid && (tvc->states & CMValid)) {
+ if (tvc->mvid && (tvc->f.states & CMValid)) {
if (!canblock) {
afs_int32 retry;
goto done;
}
#ifdef AFS_DARWIN80_ENV
- root_vp->m.Type = VDIR;
+ root_vp->f.m.Type = VDIR;
AFS_GUNLOCK();
code = afs_darwin_finalizevnode(root_vp, NULL, NULL, 0);
AFS_GLOCK();
if (code) goto done;
vnode_ref(AFSTOV(root_vp));
#endif
- if (tvolp) {
+ if (tvolp && !afs_InReadDir(root_vp)) {
/* Is this always kosher? Perhaps we should instead use
* NBObtainWriteLock to avoid potential deadlock.
*/
if (!afs_nfsexporter)
strcpy(bufp, (*sysnamelist)[0]);
else {
- au = afs_GetUser(areq->uid, adp->fid.Cell, 0);
+ au = afs_GetUser(areq->uid, adp->f.fid.Cell, 0);
if (au->exporter) {
- error = EXP_SYSNAME(au->exporter, (char *)0, sysnamelist, num);
+ error = EXP_SYSNAME(au->exporter, (char *)0, sysnamelist, num, 0);
if (error) {
strcpy(bufp, "@sys");
afs_PutUser(au, 0);
if (AFS_EQ_ATSYS(aname)) {
state->offset = 0;
- state->name = (char *)osi_AllocLargeSpace(AFS_SMALLOCSIZ);
+ state->name = (char *)osi_AllocLargeSpace(MAXSYSNAME);
state->allocked = 1;
state->index =
afs_getsysname(areq, avc, state->name, &num, sysnamelist);
*sysnamelist = afs_sysnamelist;
if (afs_nfsexporter) {
- au = afs_GetUser(areq->uid, avc->fid.Cell, 0);
+ au = afs_GetUser(areq->uid, avc->f.fid.Cell, 0);
if (au->exporter) {
error =
- EXP_SYSNAME(au->exporter, (char *)0, sysnamelist, num);
+ EXP_SYSNAME(au->exporter, (char *)0, sysnamelist, &num, 0);
if (error) {
+ afs_PutUser(au, 0);
return 0;
}
}
AFSCBFids fidParm; /* file ID parm for bulk stat */
AFSBulkStats statParm; /* stat info parm for bulk stat */
int fidIndex = 0; /* which file were stating */
- struct conn *tcp = 0; /* conn for call */
+ struct afs_conn *tcp = 0; /* conn for call */
AFSCBs cbParm; /* callback parm for bulk stat */
struct server *hostp = 0; /* host we got callback from */
long startTime; /* time we started the call,
afs_int32 retry; /* handle low-level SGI MP race conditions */
long volStates; /* flags from vol structure */
struct volume *volp = 0; /* volume ptr */
- struct VenusFid dotdot;
+ struct VenusFid dotdot = {0, 0, 0};
int flagIndex = 0; /* First file with bulk fetch flag set */
int inlinebulk = 0; /* Did we use InlineBulk RPC or not? */
XSTATS_DECLS;
+ dotdot.Cell = 0;
+ dotdot.Fid.Unique = 0;
+ dotdot.Fid.Vnode = 0;
#ifdef AFS_DARWIN80_ENV
panic("bulkstatus doesn't work on AFS_DARWIN80_ENV. don't call it");
#endif
* 1. The cache data is being fetched by another process.
* 2. The cache data is no longer valid
*/
- while ((adp->states & CStatd)
+ while ((adp->f.states & CStatd)
&& (dcp->dflags & DFFetching)
- && hsame(adp->m.DataVersion, dcp->f.versionNo)) {
+ && hsame(adp->f.m.DataVersion, dcp->f.versionNo)) {
afs_Trace4(afs_iclSetp, CM_TRACE_DCACHEWAIT, ICL_TYPE_STRING,
__FILE__, ICL_TYPE_INT32, __LINE__, ICL_TYPE_POINTER, dcp,
ICL_TYPE_INT32, dcp->dflags);
ObtainReadLock(&adp->lock);
ObtainReadLock(&dcp->lock);
}
- if (!(adp->states & CStatd)
- || !hsame(adp->m.DataVersion, dcp->f.versionNo)) {
+ if (!(adp->f.states & CStatd)
+ || !hsame(adp->f.m.DataVersion, dcp->f.versionNo)) {
ReleaseReadLock(&dcp->lock);
ReleaseReadLock(&adp->lock);
afs_PutDCache(dcp);
* also make us skip "." and probably "..", unless it has
* disappeared from the cache since we did our namei call.
*/
- tfid.Cell = adp->fid.Cell;
- tfid.Fid.Volume = adp->fid.Fid.Volume;
+ tfid.Cell = adp->f.fid.Cell;
+ tfid.Fid.Volume = adp->f.fid.Fid.Volume;
tfid.Fid.Vnode = ntohl(dirEntryp->fid.vnode);
tfid.Fid.Unique = ntohl(dirEntryp->fid.vunique);
do {
}
#ifdef AFS_DARWIN80_ENV
- if (tvcp->states & CVInit) {
+ if (tvcp->f.states & CVInit) {
/* XXX don't have status yet, so creating the vnode is
not yet useful. we would get CDeadVnode set, and the
upcoming PutVCache will cause the vcache to be flushed &
* if the new length will be ignored when afs_ProcessFS is
* called with new stats. */
#ifdef AFS_SGI_ENV
- if (!(tvcp->states & (CStatd | CBulkFetching))
+ if (!(tvcp->f.states & (CStatd | CBulkFetching))
&& (tvcp->execsOrWriters <= 0)
&& !afs_DirtyPages(tvcp)
&& !AFS_VN_MAPPED((vnode_t *) tvcp))
#else
- if (!(tvcp->states & (CStatd | CBulkFetching))
+ if (!(tvcp->f.states & (CStatd | CBulkFetching))
&& (tvcp->execsOrWriters <= 0)
&& !afs_DirtyPages(tvcp))
#endif
*/
memcpy((char *)(fidsp + fidIndex), (char *)&tfid.Fid,
sizeof(*fidsp));
- tvcp->states |= CBulkFetching;
- tvcp->m.Length = statSeqNo;
+ tvcp->f.states |= CBulkFetching;
+ tvcp->f.m.Length = statSeqNo;
fidIndex++;
}
afs_PutVCache(tvcp);
/* start the timer; callback expirations are relative to this */
startTime = osi_Time();
- tcp = afs_Conn(&adp->fid, areqp, SHARED_LOCK);
+ tcp = afs_Conn(&adp->f.fid, areqp, SHARED_LOCK);
if (tcp) {
hostp = tcp->srvr->server;
XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_BULKSTATUS);
} else
code = -1;
} while (afs_Analyze
- (tcp, code, &adp->fid, areqp, AFS_STATS_FS_RPCIDX_BULKSTATUS,
+ (tcp, code, &adp->f.fid, areqp, AFS_STATS_FS_RPCIDX_BULKSTATUS,
SHARED_LOCK, NULL));
/* now, if we didnt get the info, bail out. */
/* we need vol flags to create the entries properly */
dotdot.Fid.Volume = 0;
- volp = afs_GetVolume(&adp->fid, areqp, READ_LOCK);
+ volp = afs_GetVolume(&adp->f.fid, areqp, READ_LOCK);
if (volp) {
volStates = volp->states;
if (volp->dotdot.Fid.Volume != 0)
ReleaseReadLock(&afs_xvcache); /* could be read lock */
if (retry)
goto reskip;
-#ifdef AFS_DARWIN80_ENV
- vnode_get(AFSTOV(lruvcp));
-#endif
/* otherwise, merge in the info. We have to be quite careful here,
* since we need to ensure that we don't merge old info over newer
for (i = 0; i < fidIndex; i++) {
if ((&statsp[i])->errorCode)
continue;
- afid.Cell = adp->fid.Cell;
- afid.Fid.Volume = adp->fid.Fid.Volume;
+ afid.Cell = adp->f.fid.Cell;
+ afid.Fid.Volume = adp->f.fid.Fid.Volume;
afid.Fid.Vnode = fidsp[i].Vnode;
afid.Fid.Unique = fidsp[i].Unique;
do {
* and we may not have the latest status information for this
* file. Leave the entry alone.
*/
- if (!(tvcp->states & CBulkFetching) || (tvcp->m.Length != statSeqNo)) {
+ if (!(tvcp->f.states & CBulkFetching) || (tvcp->f.m.Length != statSeqNo)) {
flagIndex++;
ReleaseWriteLock(&tvcp->lock);
afs_PutVCache(tvcp);
/* We need to check the flags again. We may have missed
* something while we were waiting for a lock.
*/
- if (!(tvcp->states & CBulkFetching) || (tvcp->m.Length != statSeqNo)) {
+ if (!(tvcp->f.states & CBulkFetching) || (tvcp->f.m.Length != statSeqNo)) {
flagIndex++;
ReleaseWriteLock(&tvcp->lock);
ReleaseWriteLock(&afs_xcbhash);
* loaded, so we can tell if we use it before it gets
* recycled.
*/
- tvcp->states |= CBulkStat;
- tvcp->states &= ~CBulkFetching;
+ tvcp->f.states |= CBulkStat;
+ tvcp->f.states &= ~CBulkFetching;
flagIndex++;
afs_bulkStatsDone++;
/* merge in vol info */
if (volStates & VRO)
- tvcp->states |= CRO;
+ tvcp->f.states |= CRO;
if (volStates & VBackup)
- tvcp->states |= CBackup;
+ tvcp->f.states |= CBackup;
if (volStates & VForeign)
- tvcp->states |= CForeign;
+ tvcp->f.states |= CForeign;
/* merge in the callback info */
- tvcp->states |= CTruth;
+ tvcp->f.states |= CTruth;
/* get ptr to the callback we are interested in */
tcbp = cbsp + i;
if (tcbp->ExpirationTime != 0) {
tvcp->cbExpires = tcbp->ExpirationTime + startTime;
tvcp->callback = hostp;
- tvcp->states |= CStatd;
+ tvcp->f.states |= CStatd;
afs_QueueCallback(tvcp, CBHash(tcbp->ExpirationTime), volp);
- } else if (tvcp->states & CRO) {
+ } else if (tvcp->f.states & CRO) {
/* ordinary callback on a read-only volume -- AFS 3.2 style */
tvcp->cbExpires = 3600 + startTime;
tvcp->callback = hostp;
- tvcp->states |= CStatd;
+ tvcp->f.states |= CStatd;
afs_QueueCallback(tvcp, CBHash(3600), volp);
} else {
tvcp->callback = 0;
- tvcp->states &= ~(CStatd | CUnique);
+ tvcp->f.states &= ~(CStatd | CUnique);
afs_DequeueCallback(tvcp);
- if ((tvcp->states & CForeign) || (vType(tvcp) == VDIR))
+ if ((tvcp->f.states & CForeign) || (vType(tvcp) == VDIR))
osi_dnlc_purgedp(tvcp); /* if it (could be) a directory */
}
ReleaseWriteLock(&afs_xcbhash);
done:
/* Be sure to turn off the CBulkFetching flags */
for (i = flagIndex; i < fidIndex; i++) {
- afid.Cell = adp->fid.Cell;
- afid.Fid.Volume = adp->fid.Fid.Volume;
+ afid.Cell = adp->f.fid.Cell;
+ afid.Fid.Volume = adp->f.fid.Fid.Volume;
afid.Fid.Vnode = fidsp[i].Vnode;
afid.Fid.Unique = fidsp[i].Unique;
do {
tvcp = afs_FindVCache(&afid, &retry, 0 /* !stats&!lru */ );
ReleaseReadLock(&afs_xvcache);
} while (tvcp && retry);
- if (tvcp != NULL && (tvcp->states & CBulkFetching)
- && (tvcp->m.Length == statSeqNo)) {
- tvcp->states &= ~CBulkFetching;
+ if (tvcp != NULL && (tvcp->f.states & CBulkFetching)
+ && (tvcp->f.m.Length == statSeqNo)) {
+ tvcp->f.states &= ~CBulkFetching;
}
if (tvcp != NULL) {
afs_PutVCache(tvcp);
/* If we did the InlineBulk RPC pull out the return code */
if (inlinebulk) {
if ((&statsp[0])->errorCode) {
- afs_Analyze(tcp, (&statsp[0])->errorCode, &adp->fid, areqp,
+ afs_Analyze(tcp, (&statsp[0])->errorCode, &adp->f.fid, areqp,
AFS_STATS_FS_RPCIDX_BULKSTATUS, SHARED_LOCK, NULL);
code = (&statsp[0])->errorCode;
}
register afs_int32 code;
register afs_int32 bulkcode = 0;
int pass = 0, hit = 0;
+ int force_eval = afs_fakestat_enable ? 0 : 1;
long dirCookie;
extern afs_int32 afs_mariner; /*Writing activity to log? */
afs_hyper_t versionNo;
AFS_STATCNT(afs_lookup);
afs_InitFakeStat(&fakestate);
+ AFS_DISCON_LOCK();
+
if ((code = afs_InitReq(&treq, acred)))
goto done;
ndp->ni_dvp = AFSTOV(adp);
#endif /* AFS_OSF_ENV */
+ if (afs_fakestat_enable && adp->mvstat == 1) {
+ if (strcmp(aname, ".directory") == 0)
+ tryEvalOnly = 1;
+ }
+
#if defined(AFS_DARWIN_ENV)
/* Workaround for MacOSX Finder, which tries to look for
* .DS_Store and Contents under every directory.
code = afs_TryEvalFakeStat(&adp, &fakestate, &treq);
else
code = afs_EvalFakeStat(&adp, &fakestate, &treq);
+
+ /*printf("Code is %d\n", code);*/
+
if (tryEvalOnly && adp->mvstat == 1)
code = ENOENT;
if (code)
*avcp = NULL; /* Since some callers don't initialize it */
bulkcode = 0;
- if (!(adp->states & CStatd)) {
+ if (!(adp->f.states & CStatd) && !afs_InReadDir(adp)) {
if ((code = afs_VerifyVCache2(adp, &treq))) {
goto done;
}
/* looking up ".." in root via special hacks */
if (adp->mvid == (struct VenusFid *)0 || adp->mvid->Fid.Volume == 0) {
#ifdef AFS_OSF_ENV
- extern struct vcache *afs_globalVp;
if (adp == afs_globalVp) {
struct vnode *rvp = AFSTOV(adp);
/*
goto done;
}
/* otherwise we have the fid here, so we use it */
+ /*printf("Getting vcache\n");*/
tvc = afs_GetVCache(adp->mvid, &treq, NULL, NULL);
afs_Trace3(afs_iclSetp, CM_TRACE_GETVCDOTDOT, ICL_TYPE_FID, adp->mvid,
ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32, code);
goto done;
}
+ /*
+ * Special case lookup of ".." in the dynamic mount directory.
+ * The parent of this directory is _always_ the AFS root volume.
+ */
+ if (afs_IsDynrootMount(adp) &&
+ aname[0] == '.' && aname[1] == '.' && !aname[2]) {
+
+ ObtainReadLock(&afs_xvcache);
+ osi_vnhold(afs_globalVp, 0);
+ ReleaseReadLock(&afs_xvcache);
+#ifdef AFS_DARWIN80_ENV
+ vnode_get(AFSTOV(afs_globalVp));
+#endif
+ code = 0;
+ *avcp = tvc = afs_globalVp;
+ hit = 1;
+ goto done;
+ }
+
+ /*
+ * Special case lookups in the dynamic mount directory.
+ * The names here take the form cell:volume, similar to a mount point.
+ * EvalMountData parses that and returns a cell and volume ID, which
+ * we use to construct the appropriate dynroot Fid.
+ */
+ if (afs_IsDynrootMount(adp)) {
+ struct VenusFid tfid;
+ afs_uint32 cellidx, volid, vnoid;
+
+ code = EvalMountData('%', aname, 0, 0, NULL, &treq, &cellidx, &volid, &vnoid);
+ if (code)
+ goto done;
+ 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);
+ hit = 1;
+ goto done;
+ }
+
+#ifdef AFS_LINUX26_ENV
+ /*
+ * Special case of the dynamic mount volume in a static root.
+ * This is really unfortunate, but we need this for the translator.
+ */
+ if (adp == afs_globalVp && !afs_GetDynrootEnable() &&
+ !strcmp(aname, AFS_DYNROOT_MOUNTNAME)) {
+ struct VenusFid tfid;
+
+ afs_GetDynrootMountFid(&tfid);
+ *avcp = tvc = afs_GetVCache(&tfid, &treq, NULL, NULL);
+ code = 0;
+ hit = 1;
+ goto done;
+ }
+#endif
+
Check_AtSys(adp, aname, &sysState, &treq);
tname = sysState.name;
if (tvc) {
if (no_read_access && vType(tvc) != VDIR && vType(tvc) != VLNK) {
/* need read access on dir to stat non-directory / non-link */
+#ifndef AFS_FBSD80_ENV
afs_PutVCache(tvc);
+#endif
*avcp = NULL;
code = EACCES;
goto done;
struct VenusFid tfid;
/* now we have to lookup the next fid */
- tdc =
- afs_GetDCache(adp, (afs_size_t) 0, &treq, &dirOffset, &dirLen, 1);
+ if (afs_InReadDir(adp))
+ tdc = adp->dcreaddir;
+ else
+ tdc = afs_GetDCache(adp, (afs_size_t) 0, &treq,
+ &dirOffset, &dirLen, 1);
if (!tdc) {
*avcp = NULL; /* redundant, but harmless */
code = EIO;
* cases we need to worry about:
* 1. The cache data is being fetched by another process.
* 2. The cache data is no longer valid
+ *
+ * If a readdir is in progress _in this thread_, it has a shared
+ * lock on the vcache and has obtained current data, so we just
+ * use that. This eliminates several possible deadlocks.
*/
- while ((adp->states & CStatd)
- && (tdc->dflags & DFFetching)
- && hsame(adp->m.DataVersion, tdc->f.versionNo)) {
- ReleaseReadLock(&tdc->lock);
- ReleaseReadLock(&adp->lock);
- afs_osi_Sleep(&tdc->validPos);
- ObtainReadLock(&adp->lock);
- ObtainReadLock(&tdc->lock);
- }
- if (!(adp->states & CStatd)
- || !hsame(adp->m.DataVersion, tdc->f.versionNo)) {
- ReleaseReadLock(&tdc->lock);
- ReleaseReadLock(&adp->lock);
- afs_PutDCache(tdc);
- if (tname && tname != aname)
- osi_FreeLargeSpace(tname);
- goto redo;
+ if (!afs_InReadDir(adp)) {
+ while ((adp->f.states & CStatd)
+ && (tdc->dflags & DFFetching)
+ && hsame(adp->f.m.DataVersion, tdc->f.versionNo)) {
+ ReleaseReadLock(&tdc->lock);
+ ReleaseReadLock(&adp->lock);
+ afs_osi_Sleep(&tdc->validPos);
+ ObtainReadLock(&adp->lock);
+ ObtainReadLock(&tdc->lock);
+ }
+ if (!(adp->f.states & CStatd)
+ || !hsame(adp->f.m.DataVersion, tdc->f.versionNo)) {
+ ReleaseReadLock(&tdc->lock);
+ ReleaseReadLock(&adp->lock);
+ afs_PutDCache(tdc);
+ if (tname && tname != aname)
+ osi_FreeLargeSpace(tname);
+ goto redo;
+ }
}
/* Save the version number for when we call osi_dnlc_enter */
tname = sysState.name;
ReleaseReadLock(&tdc->lock);
- afs_PutDCache(tdc);
+ if (!afs_InReadDir(adp))
+ afs_PutDCache(tdc);
if (code == ENOENT && afs_IsDynroot(adp) && dynrootRetry) {
ReleaseReadLock(&adp->lock);
}
/* new fid has same cell and volume */
- tfid.Cell = adp->fid.Cell;
- tfid.Fid.Volume = adp->fid.Fid.Volume;
+ tfid.Cell = adp->f.fid.Cell;
+ tfid.Fid.Volume = adp->f.fid.Fid.Volume;
afs_Trace4(afs_iclSetp, CM_TRACE_LOOKUP, ICL_TYPE_POINTER, adp,
ICL_TYPE_STRING, tname, ICL_TYPE_FID, &tfid,
ICL_TYPE_INT32, code);
/* prefetch some entries, if the dir is currently open. The variable
* dirCookie tells us where to start prefetching from.
*/
- if (AFSDOBULK && adp->opens > 0 && !(adp->states & CForeign)
- && !afs_IsDynroot(adp)) {
+ if (!AFS_IS_DISCONNECTED &&
+ AFSDOBULK && adp->opens > 0 && !(adp->f.states & CForeign)
+ && !afs_IsDynroot(adp) && !afs_InReadDir(adp)) {
afs_int32 retry;
/* if the entry is not in the cache, or is in the cache,
* but hasn't been statd, then do a bulk stat operation.
ReleaseReadLock(&afs_xvcache);
} while (tvc && retry);
- if (!tvc || !(tvc->states & CStatd))
+ if (!tvc || !(tvc->f.states & CStatd))
bulkcode = afs_DoBulkStat(adp, dirCookie, &treq);
else
bulkcode = 0;
/* if the vcache isn't usable, release it */
- if (tvc && !(tvc->states & CStatd)) {
- afs_PutVCache(tvc);
+ if (tvc && !(tvc->f.states & CStatd)) {
+#ifndef AFS_FBSD80_ENV
+ afs_PutVCache(tvc);
+#endif
tvc = NULL;
}
} else {
*/
if (!tvc) {
afs_int32 cached = 0;
- if (!tfid.Fid.Unique && (adp->states & CForeign)) {
+ if (!tfid.Fid.Unique && (adp->f.states & CForeign)) {
tvc = afs_LookupVCache(&tfid, &treq, &cached, adp, tname);
}
if (!tvc && !bulkcode) { /* lookup failed or wasn't called */
} /* sub-block just to reduce stack usage */
if (tvc) {
- int force_eval = afs_fakestat_enable ? 0 : 1;
-
- if (adp->states & CForeign)
- tvc->states |= CForeign;
- tvc->parentVnode = adp->fid.Fid.Vnode;
- tvc->parentUnique = adp->fid.Fid.Unique;
- tvc->states &= ~CBulkStat;
+ if (adp->f.states & CForeign)
+ tvc->f.states |= CForeign;
+ tvc->f.parent.vnode = adp->f.fid.Fid.Vnode;
+ tvc->f.parent.unique = adp->f.fid.Fid.Unique;
+ tvc->f.states &= ~CBulkStat;
if (afs_fakestat_enable == 2 && tvc->mvstat == 1) {
ObtainSharedLock(&tvc->lock, 680);
force_eval = 1;
ReleaseReadLock(&tvc->lock);
}
+ if (tvc->mvstat == 1 && (tvc->f.states & CMValid) && tvc->mvid != NULL)
+ force_eval = 1; /* This is now almost for free, get it correct */
+
#if defined(UKERNEL) && defined(AFS_WEB_ENHANCEMENTS)
if (!(flags & AFS_LOOKUP_NOEVAL))
/* don't eval mount points */
ReleaseWriteLock(&tvc->lock);
if (code) {
+#ifndef AFS_FBSD80_ENV
afs_PutVCache(tvc);
+#endif
if (tvolp)
afs_PutVolume(tvolp, WRITE_LOCK);
goto done;
}
/* next, we want to continue using the target of the mt point */
- if (tvc->mvid && (tvc->states & CMValid)) {
+ if (tvc->mvid && (tvc->f.states & CMValid)) {
struct vcache *uvc;
/* now lookup target, to set .. pointer */
afs_Trace2(afs_iclSetp, CM_TRACE_LOOKUP1,
ICL_TYPE_POINTER, tvc, ICL_TYPE_FID,
- &tvc->fid);
+ &tvc->f.fid);
uvc = tvc; /* remember for later */
if (tvolp && (tvolp->states & VForeign)) {
} else {
tvc = afs_GetVCache(tvc->mvid, &treq, NULL, NULL);
}
+#ifndef AFS_FBSD80_ENV
afs_PutVCache(uvc); /* we're done with it */
+#endif
if (!tvc) {
code = ENOENT;
afs_PutVolume(tvolp, WRITE_LOCK);
}
} else {
+#ifndef AFS_FBSD80_ENV
afs_PutVCache(tvc);
+#endif
code = ENOENT;
if (tvolp)
afs_PutVolume(tvolp, WRITE_LOCK);
* be located (a Multics "connection failure"). If the volume is
* read-only, we try flushing this entry from the cache and trying
* again. */
- if (pass == 0) {
- struct volume *tv;
- tv = afs_GetVolume(&adp->fid, &treq, READ_LOCK);
- if (tv) {
- if (tv->states & VRO) {
- pass = 1; /* try this *once* */
- ObtainWriteLock(&afs_xcbhash, 495);
- afs_DequeueCallback(adp);
- /* re-stat to get later version */
- adp->states &= ~CStatd;
- ReleaseWriteLock(&afs_xcbhash);
- osi_dnlc_purgedp(adp);
+ if (!AFS_IS_DISCONNECTED) {
+ if (pass == 0) {
+ struct volume *tv;
+ tv = afs_GetVolume(&adp->f.fid, &treq, READ_LOCK);
+ if (tv) {
+ if (tv->states & VRO) {
+ pass = 1; /* try this *once* */
+ ObtainWriteLock(&afs_xcbhash, 495);
+ afs_DequeueCallback(adp);
+ /* re-stat to get later version */
+ adp->f.states &= ~CStatd;
+ ReleaseWriteLock(&afs_xcbhash);
+ osi_dnlc_purgedp(adp);
+ afs_PutVolume(tv, READ_LOCK);
+ goto redo;
+ }
afs_PutVolume(tv, READ_LOCK);
- goto redo;
- }
- afs_PutVolume(tv, READ_LOCK);
+ }
}
+ code = ENOENT;
+ } else {
+ printf("Network down in afs_lookup\n");
+ code = ENETDOWN;
}
- code = ENOENT;
}
done:
#ifdef AFS_OSF_ENV
/* Handle RENAME; only need to check rename "." */
if (opflag == RENAME && wantparent && *ndp->ni_next == 0) {
- if (!FidCmp(&(tvc->fid), &(adp->fid))) {
+ if (!FidCmp(&(tvc->f.fid), &(adp->f.fid))) {
afs_PutVCache(*avcp);
*avcp = NULL;
afs_PutFakeStat(&fakestate);
* rather than the vc of the mount point itself. we can still find the
* mount point's vc in the vcache by its fid. */
#endif /* UKERNEL && AFS_WEB_ENHANCEMENTS */
- if (!hit) {
+ if (!hit && force_eval) {
osi_dnlc_enter(adp, aname, tvc, &versionNo);
} else {
#ifdef AFS_LINUX20_ENV
code = afs_VerifyVCache(tvc, &treq);
#else
afs_PutFakeStat(&fakestate);
+ AFS_DISCON_UNLOCK();
return 0; /* can't have been any errors if hit and !code */
#endif
}
}
if (bulkcode)
code = bulkcode;
- else
- code = afs_CheckCode(code, &treq, 19);
+
+ code = afs_CheckCode(code, &treq, 19);
if (code) {
/* If there is an error, make sure *avcp is null.
* Alphas panic otherwise - defect 10719.
}
afs_PutFakeStat(&fakestate);
+ AFS_DISCON_UNLOCK();
return code;
}