afs_int32 relativeBlob;
afs_int32 pageBlob;
struct PageHeader *tpe;
+ struct DirBuffer headerbuf;
afs_int32 i;
+ int code;
AFS_STATCNT(BlobScan);
/* advance ablob over free and header blobs */
while (1) {
pageBlob = ablob & ~(EPP - 1); /* base blob in same page */
- tpe = (struct PageHeader *)afs_dir_GetBlob(afile, pageBlob);
- if (!tpe)
- return 0; /* we've past the end */
+ code = afs_dir_GetBlob(afile, pageBlob, &headerbuf);
+ if (code)
+ return 0;
+ tpe = (struct PageHeader *)headerbuf.data;
+
relativeBlob = ablob - pageBlob; /* relative to page's first blob */
/* first watch for headers */
if (pageBlob == 0) { /* first dir page has extra-big header */
}
/* now relativeBlob is the page-relative first allocated blob,
* or EPP (if there are none in this page). */
- DRelease(tpe, 0);
+ DRelease(&headerbuf, 0);
if (i != EPP)
return i + pageBlob;
ablob = pageBlob + EPP; /* go around again */
afs_size_t origOffset, tlen;
afs_int32 len;
int code = 0;
+ struct DirBuffer oldEntry, nextEntry;
struct DirEntry *ode = 0, *nde = 0;
int o_slen = 0, n_slen = 0;
afs_uint32 us;
*/
AFS_STATCNT(afs_readdir);
+ memset(&oldEntry, 0, sizeof(struct DirBuffer));
+ memset(&nextEntry, 0, sizeof(struct DirBuffer));
+
#if defined(AFS_SGI53_ENV)
#ifdef AFS_SGI61_ENV
#ifdef AFS_SGI62_ENV
/* scan for the next interesting entry scan for in-use blob otherwise up point at
* this blob note that ode, if non-zero, also represents a held dir page */
if (!(us = BlobScan(tdc, (origOffset >> 5)))
- || !(nde = (struct DirEntry *)afs_dir_GetBlob(tdc, us))) {
+ || (afs_dir_GetBlob(tdc, us, &nextEntry) != 0)) {
/* failed to setup nde, return what we've got, and release ode */
if (len) {
/* something to hand over. */
if (eofp)
*eofp = 1; /* Set it properly */
#endif
- if (ode)
- DRelease(ode, 0);
+ DRelease(&oldEntry, 0);
goto dirend;
}
- /* by here nde is set */
+ nde = (struct DirEntry *)nextEntry.data;
+
/* Do we have enough user space to carry out our mission? */
#if defined(AFS_SGI_ENV)
n_slen = strlen(nde->name) + 1; /* NULL terminate */
if (DIRSIZ_LEN(n_slen) >= (AFS_UIO_RESID(auio) - len)) {
#endif /* AFS_SGI53_ENV */
/* No can do no more now; ya know... at this time */
- DRelease(nde, 0); /* can't use this one. */
+ DRelease(&nextEntry, 0); /* can't use this one. */
if (len) {
#ifdef AFS_HPUX_ENV
sdirEntry->d_fileno =
*/
code = EINVAL;
}
- if (ode)
- DRelease(ode, 0);
+ DRelease(&oldEntry, 0);
goto dirend;
}
#else
len = DIRSIZ_LEN(o_slen = n_slen);
#endif /* AFS_SGI53_ENV */
- if (ode)
- DRelease(ode, 0);
+
+ DRelease(&oldEntry, 0);
ode = nde;
AFS_UIO_SETOFFSET(auio, (afs_int32) ((us + afs_dir_NameBlobs(nde->name)) << 5));
}
- if (ode)
- DRelease(ode, 0);
+
+ DRelease(&oldEntry, 0);
dirend:
ReleaseReadLock(&tdc->lock);
return code;
}
-#if defined(AFS_HPUX_ENV)
-int
-afs1_readdir(struct vcache *avc, struct uio *auio, afs_ucred_t *acred)
-{
- struct vrequest treq;
- struct dcache *tdc;
- afs_size_t origOffset, len;
- int code = 0;
- struct DirEntry *ode = 0, *nde = 0;
- int o_slen = 0, n_slen = 0;
- afs_uint32 us;
- /*
- * XXX All the hacks for alloced sdirEntry and inlining of
- * afs_readdir_move instead of calling it is necessary for hpux due to
- * stack problems that seem to occur when coming thru the nfs
- * translator side XXX
- */
- struct minnfs_direct *sdirEntry = (struct minnfs_direct *)
- osi_AllocSmallSpace(sizeof(struct min_direct));
- afs_int32 rlen;
-
- struct afs_fakestat_state fakestate;
-
- AFS_STATCNT(afs_readdir);
- if (code = afs_InitReq(&treq, acred)) {
- osi_FreeSmallSpace((char *)sdirEntry);
- return code;
- }
- afs_InitFakeStat(&fakestate);
- AFS_DISCON_LOCK();
- code = afs_EvalFakeStat(&avc, &fakestate, &treq);
- if (code) {
- osi_FreeSmallSpace((char *)sdirEntry);
- AFS_DISCON_UNLOCK();
- afs_PutFakeStat(&fakestate);
- return code;
- }
- /* update the cache entry */
- tagain:
- code = afs_VerifyVCache(avc, &treq);
- if (code)
- goto done;
- /* get a reference to the entire directory */
- tdc = afs_GetDCache(avc, (afs_size_t) 0, &treq, &origOffset, &len, 1);
- if (!tdc) {
- code = ENOENT;
- goto done;
- }
- ObtainReadLock(&avc->lock);
- ObtainReadLock(&tdc->lock);
-
- /*
- * Make sure that the data in the cache is current. There are two
- * cases we need to worry about:
- * 1. The cache data is being fetched by another process.
- * 2. The cache data is no longer valid
- */
- while ((avc->f.states & CStatd)
- && (tdc->dflags & DFFetching)
- && hsame(avc->f.m.DataVersion, tdc->f.versionNo)) {
- afs_Trace4(afs_iclSetp, CM_TRACE_DCACHEWAIT, ICL_TYPE_STRING,
- __FILE__, ICL_TYPE_INT32, __LINE__, ICL_TYPE_POINTER, tdc,
- ICL_TYPE_INT32, tdc->dflags);
- ReleaseReadLock(&tdc->lock);
- ReleaseReadLock(&avc->lock);
- afs_osi_Sleep(&tdc->validPos);
- ObtainReadLock(&avc->lock);
- ObtainReadLock(&tdc->lock);
- }
- if (!(avc->f.states & CStatd)
- || !hsame(avc->f.m.DataVersion, tdc->f.versionNo)) {
- ReleaseReadLock(&tdc->lock);
- ReleaseReadLock(&avc->lock);
- afs_PutDCache(tdc);
- goto tagain;
- }
-
- len = 0;
- auio->uio_fpflags = 0;
- while (code == 0) {
- origOffset = AFS_UIO_OFFSET(auio);
-
- /* scan for the next interesting entry scan for in-use blob
- * otherwise up point at this blob note that ode, if non-zero,
- * also represents a held dir page */
- if (!(us = BlobScan(tdc, (origOffset >> 5)))
- || !(nde = (struct DirEntry *)afs_dir_GetBlob(tdc, us))) {
- /* failed to setup nde, return what we've got, and release ode */
- if (len) {
- /* something to hand over. */
- sdirEntry->d_fileno =
- (avc->f.fid.Fid.Volume << 16) + ntohl(ode->fid.vnode);
- FIXUPSTUPIDINODE(sdirEntry->d_fileno);
- sdirEntry->d_reclen = rlen = AFS_UIO_RESID(auio);
- sdirEntry->d_namlen = o_slen;
- sdirEntry->d_off = origOffset;
- AFS_UIOMOVE((char *)sdirEntry, sizeof(*sdirEntry), UIO_READ,
- auio, code);
- if (code == 0) {
- AFS_UIOMOVE(ode->name, o_slen, UIO_READ, auio, code);
- }
- /* pad out the remaining characters with zeros */
- if (code == 0) {
- AFS_UIOMOVE(bufofzeros,
- ((o_slen + 1 + DIRPAD) & ~DIRPAD) - o_slen,
- UIO_READ, auio, code);
- }
- /* pad out the difference between rlen and slen... */
- if (NDIRSIZ_LEN(o_slen) < rlen) {
- while (NDIRSIZ_LEN(o_slen) < rlen) {
- int minLen = rlen - NDIRSIZ_LEN(o_slen);
- if (minLen > sizeof(bufofzeros))
- minLen = sizeof(bufofzeros);
- AFS_UIOMOVE(bufofzeros, minLen, UIO_READ, auio, code);
- rlen -= minLen;
- }
- }
- AFS_UIO_SETRESID(auio, 0);
- } else {
- /* nothin to hand over */
- }
- if (ode)
- DRelease(ode, 0);
- goto dirend;
- }
- /* by here nde is set */
-
- /* Do we have enough user space to carry out our mission? */
- n_slen = strlen(nde->name);
- if (NDIRSIZ_LEN(n_slen) >= (AFS_UIO_RESID(auio) - len)) {
- /* No can do no more now; ya know... at this time */
- DRelease(nde, 0); /* can't use this one. */
- if (len) {
- sdirEntry->d_fileno =
- (avc->f.fid.Fid.Volume << 16) + ntohl(ode->fid.vnode);
- FIXUPSTUPIDINODE(sdirEntry->d_fileno);
- sdirEntry->d_reclen = rlen = AFS_UIO_RESID(auio);
- sdirEntry->d_namlen = o_slen;
- sdirEntry->d_off = origOffset;
- AFS_UIOMOVE((char *)sdirEntry, sizeof(*sdirEntry), UIO_READ,
- auio, code);
- if (code == 0)
- AFS_UIOMOVE(ode->name, o_slen, UIO_READ, auio, code);
- /* pad out the remaining characters with zeros */
- if (code == 0) {
- AFS_UIOMOVE(bufofzeros,
- ((o_slen + 1 + DIRPAD) & ~DIRPAD) - o_slen,
- UIO_READ, auio, code);
- }
- /* pad out the difference between rlen and slen... */
- if (NDIRSIZ_LEN(o_slen) < rlen) {
- while (NDIRSIZ_LEN(o_slen) < rlen) {
- int minLen = rlen - NDIRSIZ_LEN(o_slen);
- if (minLen > sizeof(bufofzeros))
- minLen = sizeof(bufofzeros);
- AFS_UIOMOVE(bufofzeros, minLen, UIO_READ, auio, code);
- rlen -= minLen;
- }
- }
- /* this next line used to be AFSVFS40 or AIX 3.1, but is really generic */
- AFS_UIO_SETOFFSET(auio, origOffset);
- AFS_UIO_SETRESID(auio, 0);
- } else { /* trouble, can't give anything to the user! */
- /* even though he has given us a buffer,
- * even though we have something to give us,
- * Looks like we lost something somewhere.
- */
- code = EINVAL;
- }
- if (ode)
- DRelease(ode, 0);
- goto dirend;
- }
-
- /*
- * In any event, we move out the LAST de entry, getting ready
- * to set up for the next one.
- */
- if (len) {
- sdirEntry->d_fileno =
- (avc->f.fid.Fid.Volume << 16) + ntohl(ode->fid.vnode);
- FIXUPSTUPIDINODE(sdirEntry->d_fileno);
- sdirEntry->d_reclen = rlen = len;
- sdirEntry->d_namlen = o_slen;
- sdirEntry->d_off = origOffset;
- AFS_UIOMOVE((char *)sdirEntry, sizeof(*sdirEntry), UIO_READ, auio,
- code);
- if (code == 0)
- AFS_UIOMOVE(ode->name, o_slen, UIO_READ, auio, code);
- /* pad out the remaining characters with zeros */
- if (code == 0) {
- AFS_UIOMOVE(bufofzeros,
- ((o_slen + 1 + DIRPAD) & ~DIRPAD) - o_slen,
- UIO_READ, auio, code);
- }
- /* pad out the difference between rlen and slen... */
- if (NDIRSIZ_LEN(o_slen) < rlen) {
- while (NDIRSIZ_LEN(o_slen) < rlen) {
- int minLen = rlen - NDIRSIZ_LEN(o_slen);
- if (minLen > sizeof(bufofzeros))
- minLen = sizeof(bufofzeros);
- AFS_UIOMOVE(bufofzeros, minLen, UIO_READ, auio, code);
- rlen -= minLen;
- }
- }
- }
- len = NDIRSIZ_LEN(o_slen = n_slen);
- if (ode)
- DRelease(ode, 0);
- ode = nde;
- AFS_UIO_OFFSET(auio) = ((us + afs_dir_NameBlobs(nde->name)) << 5);
- }
- if (ode)
- DRelease(ode, 0);
-
- dirend:
- ReleaseReadLock(&tdc->lock);
- afs_PutDCache(tdc);
- ReleaseReadLock(&avc->lock);
-
- done:
- osi_FreeSmallSpace((char *)sdirEntry);
- AFS_DISCON_UNLOCK();
- afs_PutFakeStat(&fakestate);
- code = afs_CheckCode(code, &treq, 29);
- return code;
-}
-
-#endif
#endif /* !AFS_LINUX20_ENV */
git://git.openafs.org / openafs.git / blobdiff