* afs_lookup
* EvalMountPoint
* afs_DoBulkStat
- *
- * Locals:
- * afs_strcat
- * AFS_EQ_ATSYS (macro)
- * afs_index
*/
-#include "../afs/param.h" /* Should be always first */
#include <afsconfig.h>
+#include "afs/param.h"
-RCSID("$Header$");
-
-#include "../afs/sysincludes.h" /* Standard vendor system headers */
-#include "../afs/afsincludes.h" /* Afs-based standard headers */
-#include "../afs/afs_stats.h" /* statistics */
-#include "../afs/afs_cbqueue.h"
-#include "../afs/nfsclient.h"
-#include "../afs/exporter.h"
-#include "../afs/afs_osidnlc.h"
+RCSID
+ ("$Header$");
+#include "afs/sysincludes.h" /* Standard vendor system headers */
+#include "afsincludes.h" /* Afs-based standard headers */
+#include "afs/afs_stats.h" /* statistics */
+#include "afs/afs_cbqueue.h"
+#include "afs/nfsclient.h"
+#include "afs/exporter.h"
+#include "afs/afs_osidnlc.h"
-/**
- * A few definitions. This is until we have a proper header file
- * which has prototypes for all functions
- */
-
-extern struct DirEntry * afs_dir_GetBlob();
-extern afs_rwlock_t afs_xvcache;
-extern afs_rwlock_t afs_xcbhash;
-extern struct afs_exporter *afs_nfsexporter;
-extern char *afs_sysname;
-extern char *afs_sysnamelist[];
-extern int afs_sysnamecount;
-extern struct afs_q VLRU; /*vcache LRU*/
-#ifdef AFS_LINUX22_ENV
-extern struct inode_operations afs_symlink_iops, afs_dir_iops;
-#endif
+extern struct DirEntry *afs_dir_GetBlob();
+afs_int32 afs_bkvolpref = 0;
afs_int32 afs_bulkStatsDone;
static int bulkStatCounter = 0; /* counter for bulk stat seq. numbers */
+int afs_fakestat_enable = 0; /* 1: fakestat-all, 2: fakestat-crosscell */
/* this would be faster if it did comparison as int32word, but would be
* what "@sys" is in binary... */
#define AFS_EQ_ATSYS(name) (((name)[0]=='@')&&((name)[1]=='s')&&((name)[2]=='y')&&((name)[3]=='s')&&(!(name)[4]))
-char *
-afs_strcat(s1, s2)
- register char *s1, *s2;
-{
- register char *os1;
-
- AFS_STATCNT(strcat);
- os1 = s1;
- while (*s1++)
- ;
- --s1;
- while (*s1++ = *s2++)
- ;
- return (os1);
-}
-
-
-char *afs_index(a, c)
- register char *a, c; {
- register char tc;
- AFS_STATCNT(afs_index);
- while (tc = *a) {
- if (tc == c) return a;
- else a++;
- }
- return (char *) 0;
-}
-
/* call under write lock, evaluate mvid field from a mt pt.
- * avc is the vnode of the mount point object.
- * advc is the vnode of the containing directory
+ * avc is the vnode of the mount point object; must be write-locked.
+ * advc is the vnode of the containing directory (optional; if NULL and
+ * EvalMountPoint succeeds, caller must initialize *avolpp->dotdot)
* avolpp is where we return a pointer to the volume named by the mount pt, if success
* areq is the identity of the caller.
*
* NOTE: this function returns a held volume structure in *volpp if it returns 0!
*/
-EvalMountPoint(avc, advc, avolpp, areq)
- register struct vcache *avc;
- struct volume **avolpp;
- struct vcache *advc; /* the containing dir */
- register struct vrequest *areq;
+int
+EvalMountPoint(register struct vcache *avc, struct vcache *advc,
+ struct volume **avolpp, register struct vrequest *areq)
{
- afs_int32 code;
+ afs_int32 code;
struct volume *tvp = 0;
struct VenusFid tfid;
struct cell *tcell;
- char *cpos, *volnamep;
- char type, buf[128];
- afs_int32 prefetchRO; /* 1=>No 2=>Yes */
- afs_int32 mtptCell, assocCell, hac=0;
- afs_int32 samecell, roname, len;
+ char *cpos, *volnamep;
+ char type, *buf;
+ afs_int32 prefetch; /* 1=>None 2=>RO 3=>BK */
+ afs_int32 mtptCell, assocCell = 0, hac = 0;
+ afs_int32 samecell, roname, len;
AFS_STATCNT(EvalMountPoint);
#ifdef notdef
- if (avc->mvid && (avc->states & CMValid)) return 0; /* done while racing */
+ if (avc->mvid && (avc->states & CMValid))
+ return 0; /* done while racing */
#endif
- *avolpp = (struct volume *)0;
+ *avolpp = NULL;
code = afs_HandleLink(avc, areq);
- if (code) return code;
+ if (code)
+ return code;
/* Determine which cell and volume the mointpoint goes to */
- type = avc->linkData[0]; /* '#'=>Regular '%'=>RW */
- cpos = afs_index(&avc->linkData[1], ':'); /* if cell name present */
+ type = avc->linkData[0]; /* '#'=>Regular '%'=>RW */
+ cpos = afs_strchr(&avc->linkData[1], ':'); /* if cell name present */
if (cpos) {
- volnamep = cpos+1;
- *cpos = 0;
- tcell = afs_GetCellByName(&avc->linkData[1], READ_LOCK);
- *cpos = ':';
+ volnamep = cpos + 1;
+ *cpos = 0;
+ tcell = afs_GetCellByName(&avc->linkData[1], READ_LOCK);
+ *cpos = ':';
} else {
- volnamep = &avc->linkData[1];
- tcell = afs_GetCell(avc->fid.Cell, READ_LOCK);
+ volnamep = &avc->linkData[1];
+ tcell = afs_GetCell(avc->fid.Cell, READ_LOCK);
}
- if (!tcell) return ENOENT;
+ if (!tcell)
+ return ENODEV;
- mtptCell = tcell->cell; /* The cell for the mountpoint */
+ mtptCell = tcell->cellNum; /* The cell for the mountpoint */
if (tcell->lcellp) {
- hac = 1; /* has associated cell */
- assocCell = tcell->lcellp->cell; /* The associated cell */
+ hac = 1; /* has associated cell */
+ assocCell = tcell->lcellp->cellNum; /* The associated cell */
}
- afs_PutCell(tcell, READ_LOCK);
+ afs_PutCell(tcell, READ_LOCK);
/* 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));
+ 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));
-
- /* Decide whether to prefetch the RO. Also means we want the RO.
- * If this is a regular mountpoint with a RW volume name and
- * we cross a cell boundary -or- start from a RO volume, then we will
- * want to prefetch the RO volume when we get the RW below.
+ samecell = (avc->fid.Cell == mtptCell) || (hac
+ && (avc->fid.Cell ==
+ assocCell));
+
+ /* Decide whether to prefetch the BK, or RO. Also means we want the BK or
+ * RO.
+ * If this is a regular mountpoint with a RW volume name
+ * - If BK preference is enabled AND we remain within the same cell AND
+ * start from a BK volume, then we will want to prefetch the BK volume.
+ * - If we cross a cell boundary OR start from a RO volume, then we will
+ * want to prefetch the RO volume.
*/
- if ( (type == '#') && !roname && (!samecell || (avc->states & CRO)) ) {
- prefetchRO = 2; /* Yes, prefetch the RO */
+ if ((type == '#') && !roname) {
+ if (afs_bkvolpref && samecell && (avc->states & CBackup))
+ prefetch = 3; /* Prefetch the BK */
+ else if (!samecell || (avc->states & CRO))
+ prefetch = 2; /* Prefetch the RO */
+ else
+ prefetch = 1; /* Do not prefetch */
} else {
- prefetchRO = 1; /* No prefetch of the RO */
+ prefetch = 1; /* Do not prefetch */
}
/* 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).
*/
- tvp = afs_GetVolumeByName(volnamep, mtptCell, prefetchRO, areq, WRITE_LOCK);
+ tvp = afs_GetVolumeByName(volnamep, mtptCell, prefetch, areq, WRITE_LOCK);
/* If no volume was found in this cell, try the associated linked cell */
if (!tvp && hac && areq->volumeError) {
- tvp = afs_GetVolumeByName(volnamep, assocCell, prefetchRO, areq, WRITE_LOCK);
+ tvp =
+ afs_GetVolumeByName(volnamep, assocCell, prefetch, areq,
+ WRITE_LOCK);
}
/* Still not found. If we are looking for the RO, then perhaps the RW
* doesn't exist? Try adding ".readonly" to volname and look for that.
* Don't know why we do this. Would have still found it in above call - jpm.
*/
- if (!tvp && (prefetchRO == 2)) {
- strcpy(buf, volnamep);
- afs_strcat(buf, ".readonly");
+ if (!tvp && (prefetch == 2) && len < AFS_SMALLOCSIZ - 10) {
+ buf = (char *)osi_AllocSmallSpace(len + 10);
- tvp = afs_GetVolumeByName(buf, mtptCell, 1, areq, WRITE_LOCK);
+ strcpy(buf, volnamep);
+ afs_strcat(buf, ".readonly");
- /* Try the associated linked cell if failed */
- if (!tvp && hac && areq->volumeError) {
- tvp = afs_GetVolumeByName(buf, assocCell, 1, areq, WRITE_LOCK);
- }
+ tvp = afs_GetVolumeByName(buf, mtptCell, 1, areq, WRITE_LOCK);
+
+ /* Try the associated linked cell if failed */
+ if (!tvp && hac && areq->volumeError) {
+ tvp = afs_GetVolumeByName(buf, assocCell, 1, areq, WRITE_LOCK);
+ }
+ osi_FreeSmallSpace(buf);
}
-
- if (!tvp) return ENODEV; /* Couldn't find the volume */
+
+ if (!tvp)
+ 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)) {
afs_PutVolume(tvp, WRITE_LOCK);
- return ELOOP;
+ return ENODEV;
}
- /* If we want (prefetched) the RO and it exists, then drop the
- * RW volume and get the RO. Othewise, go with the RW.
+ /* If we want (prefetched) the BK and it exists, then drop the RW volume
+ * and get the BK.
+ * Otherwise, if we want (prefetched0 the RO and it exists, then drop the
+ * RW volume and get the RO.
+ * Otherwise, go with the RW.
*/
- if ((prefetchRO == 2) && tvp->roVol) {
- tfid.Fid.Volume = tvp->roVol; /* remember RO volume */
- tfid.Cell = tvp->cell;
- afs_PutVolume(tvp, WRITE_LOCK); /* release old volume */
- tvp = afs_GetVolume(&tfid, areq, WRITE_LOCK); /* get the new one */
- if (!tvp) return ENODEV; /* oops, can't do it */
+ if ((prefetch == 3) && tvp->backVol) {
+ tfid.Fid.Volume = tvp->backVol; /* remember BK volume */
+ tfid.Cell = tvp->cell;
+ afs_PutVolume(tvp, WRITE_LOCK); /* release old volume */
+ tvp = afs_GetVolume(&tfid, areq, WRITE_LOCK); /* get the new one */
+ if (!tvp)
+ return ENODEV; /* oops, can't do it */
+ } else if ((prefetch >= 2) && tvp->roVol) {
+ tfid.Fid.Volume = tvp->roVol; /* remember RO volume */
+ tfid.Cell = tvp->cell;
+ afs_PutVolume(tvp, WRITE_LOCK); /* release old volume */
+ tvp = afs_GetVolume(&tfid, areq, WRITE_LOCK); /* get the new one */
+ if (!tvp)
+ return ENODEV; /* oops, can't do it */
}
if (avc->mvid == 0)
- avc->mvid = (struct VenusFid *) osi_AllocSmallSpace(sizeof(struct VenusFid));
+ 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;
* to the new path.
*/
tvp->mtpoint = avc->fid; /* setup back pointer to mtpoint */
- tvp->dotdot = advc->fid;
+ if (advc)
+ tvp->dotdot = advc->fid;
*avolpp = tvp;
return 0;
}
-
-afs_ENameOK(aname)
- register char *aname; {
- register char tc;
+
+/*
+ * afs_InitFakeStat
+ *
+ * Must be called on an afs_fakestat_state object before calling
+ * afs_EvalFakeStat or afs_PutFakeStat. Calling afs_PutFakeStat
+ * without calling afs_EvalFakeStat is legal, as long as this
+ * function is called.
+ */
+void
+afs_InitFakeStat(struct afs_fakestat_state *state)
+{
+ if (!afs_fakestat_enable)
+ return;
+
+ state->valid = 1;
+ state->did_eval = 0;
+ state->need_release = 0;
+}
+
+/*
+ * afs_EvalFakeStat_int
+ *
+ * The actual implementation of afs_EvalFakeStat and afs_TryEvalFakeStat,
+ * which is called by those wrapper functions.
+ *
+ * Only issues RPCs if canblock is non-zero.
+ */
+int
+afs_EvalFakeStat_int(struct vcache **avcp, struct afs_fakestat_state *state,
+ struct vrequest *areq, int canblock)
+{
+ struct vcache *tvc, *root_vp;
+ struct volume *tvolp = NULL;
+ int code = 0;
+
+ if (!afs_fakestat_enable)
+ return 0;
+
+ osi_Assert(state->valid == 1);
+ osi_Assert(state->did_eval == 0);
+ state->did_eval = 1;
+
+ tvc = *avcp;
+ if (tvc->mvstat != 1)
+ return 0;
+
+ /* Is the call to VerifyVCache really necessary? */
+ code = afs_VerifyVCache(tvc, areq);
+ if (code)
+ goto done;
+ if (canblock) {
+ ObtainWriteLock(&tvc->lock, 599);
+ code = EvalMountPoint(tvc, NULL, &tvolp, areq);
+ ReleaseWriteLock(&tvc->lock);
+ if (code)
+ goto done;
+ if (tvolp) {
+ tvolp->dotdot = tvc->fid;
+ tvolp->dotdot.Fid.Vnode = tvc->parentVnode;
+ tvolp->dotdot.Fid.Unique = tvc->parentUnique;
+ }
+ }
+ if (tvc->mvid && (tvc->states & CMValid)) {
+ if (!canblock) {
+ afs_int32 retry;
+
+ do {
+ retry = 0;
+ ObtainWriteLock(&afs_xvcache, 597);
+ root_vp = afs_FindVCache(tvc->mvid, &retry, 0);
+ if (root_vp && retry) {
+ ReleaseWriteLock(&afs_xvcache);
+ afs_PutVCache(root_vp);
+ }
+ } while (root_vp && retry);
+ ReleaseWriteLock(&afs_xvcache);
+ } else {
+ root_vp = afs_GetVCache(tvc->mvid, areq, NULL, NULL);
+ }
+ if (!root_vp) {
+ code = canblock ? ENOENT : 0;
+ goto done;
+ }
+ if (tvolp) {
+ /* Is this always kosher? Perhaps we should instead use
+ * NBObtainWriteLock to avoid potential deadlock.
+ */
+ ObtainWriteLock(&root_vp->lock, 598);
+ if (!root_vp->mvid)
+ root_vp->mvid = osi_AllocSmallSpace(sizeof(struct VenusFid));
+ *root_vp->mvid = tvolp->dotdot;
+ ReleaseWriteLock(&root_vp->lock);
+ }
+ state->need_release = 1;
+ state->root_vp = root_vp;
+ *avcp = root_vp;
+ code = 0;
+ } else {
+ code = canblock ? ENOENT : 0;
+ }
+
+ done:
+ if (tvolp)
+ afs_PutVolume(tvolp, WRITE_LOCK);
+ return code;
+}
+
+/*
+ * afs_EvalFakeStat
+ *
+ * Automatically does the equivalent of EvalMountPoint for vcache entries
+ * which are mount points. Remembers enough state to properly release
+ * the volume root vcache when afs_PutFakeStat() is called.
+ *
+ * State variable must be initialized by afs_InitFakeState() beforehand.
+ *
+ * Returns 0 when everything succeeds and *avcp points to the vcache entry
+ * that should be used for the real vnode operation. Returns non-zero if
+ * something goes wrong and the error code should be returned to the user.
+ */
+int
+afs_EvalFakeStat(struct vcache **avcp, struct afs_fakestat_state *state,
+ struct vrequest *areq)
+{
+ return afs_EvalFakeStat_int(avcp, state, areq, 1);
+}
+
+/*
+ * afs_TryEvalFakeStat
+ *
+ * Same as afs_EvalFakeStat, but tries not to talk to remote servers
+ * and only evaluate the mount point if all the data is already in
+ * local caches.
+ *
+ * Returns 0 if everything succeeds and *avcp points to a valid
+ * vcache entry (possibly evaluated).
+ */
+int
+afs_TryEvalFakeStat(struct vcache **avcp, struct afs_fakestat_state *state,
+ struct vrequest *areq)
+{
+ return afs_EvalFakeStat_int(avcp, state, areq, 0);
+}
+
+/*
+ * afs_PutFakeStat
+ *
+ * Perform any necessary cleanup at the end of a vnode op, given that
+ * afs_InitFakeStat was previously called with this state.
+ */
+void
+afs_PutFakeStat(struct afs_fakestat_state *state)
+{
+ if (!afs_fakestat_enable)
+ return;
+
+ osi_Assert(state->valid == 1);
+ if (state->need_release)
+ afs_PutVCache(state->root_vp);
+ state->valid = 0;
+}
+
+int
+afs_ENameOK(register char *aname)
+{
register int tlen;
AFS_STATCNT(ENameOK);
tlen = strlen(aname);
- if (tlen >= 4 && strcmp(aname+tlen-4, "@sys") == 0) return 0;
+ if (tlen >= 4 && strcmp(aname + tlen - 4, "@sys") == 0)
+ return 0;
return 1;
}
-afs_getsysname(areq, adp, bufp)
- register struct vrequest *areq;
- register struct vcache *adp;
- register char *bufp;
+static int
+afs_getsysname(register struct vrequest *areq, register struct vcache *adp,
+ register char *bufp, int *num, char **sysnamelist[])
{
- static char sysname[MAXSYSNAME];
register struct unixuser *au;
register afs_int32 error;
- if (!afs_nfsexporter) {
- strcpy(bufp, afs_sysname);
- return 0;
- }
AFS_STATCNT(getsysname);
- au = afs_GetUser(areq->uid, adp->fid.Cell, 0);
- afs_PutUser(au, 0);
- if (au->exporter) {
- error = EXP_SYSNAME(au->exporter, (char *)0, bufp);
- if (error)
- strcpy(bufp, "@sys");
- return -1;
- } else {
- strcpy(bufp, afs_sysname);
- return 0;
+
+ *sysnamelist = afs_sysnamelist;
+
+ if (!afs_nfsexporter)
+ strcpy(bufp, (*sysnamelist)[0]);
+ else {
+ au = afs_GetUser(areq->uid, adp->fid.Cell, 0);
+ if (au->exporter) {
+ error = EXP_SYSNAME(au->exporter, (char *)0, sysnamelist, num);
+ if (error) {
+ strcpy(bufp, "@sys");
+ afs_PutUser(au, 0);
+ return -1;
+ } else {
+ strcpy(bufp, (*sysnamelist)[0]);
+ }
+ } else
+ strcpy(bufp, afs_sysname);
+ afs_PutUser(au, 0);
}
+ return 0;
}
-Check_AtSys(avc, aname, state, areq)
- register struct vcache *avc;
- char *aname;
- struct sysname_info *state;
- struct vrequest *areq;
+void
+Check_AtSys(register struct vcache *avc, const char *aname,
+ struct sysname_info *state, struct vrequest *areq)
{
+ int num = 0;
+ char **sysnamelist[MAXNUMSYSNAMES];
+
if (AFS_EQ_ATSYS(aname)) {
- state->offset = 0;
- state->name = (char *) osi_AllocLargeSpace(AFS_SMALLOCSIZ);
- state->allocked = 1;
- state->index = afs_getsysname(areq, avc, state->name);
+ state->offset = 0;
+ state->name = (char *)osi_AllocLargeSpace(AFS_SMALLOCSIZ);
+ state->allocked = 1;
+ state->index =
+ afs_getsysname(areq, avc, state->name, &num, sysnamelist);
} else {
- state->offset = -1;
- state->allocked = 0;
- state->index = 0;
- state->name = aname;
+ state->offset = -1;
+ state->allocked = 0;
+ state->index = 0;
+ state->name = (char *)aname;
}
}
-Next_AtSys(avc, areq, state)
- register struct vcache *avc;
- struct vrequest *areq;
- struct sysname_info *state;
+int
+Next_AtSys(register struct vcache *avc, struct vrequest *areq,
+ struct sysname_info *state)
{
- if (state->index == -1)
- return 0; /* No list */
-
- /* Check for the initial state of aname != "@sys" in Check_AtSys*/
- if (state->offset == -1 && state->allocked == 0) {
- register char *tname;
- /* Check for .*@sys */
- for (tname=state->name; *tname; tname++)
- /*Move to the end of the string*/;
- if ((tname > state->name + 4) && (AFS_EQ_ATSYS(tname-4))) {
- state->offset = (tname - 4) - state->name;
- tname = (char *) osi_AllocLargeSpace(AFS_LRALLOCSIZ);
- strncpy(tname, state->name, state->offset);
- state->name = tname;
- state->allocked = 1;
- state->index = afs_getsysname(areq, avc, state->name+state->offset);
- return 1;
- } else
- return 0; /* .*@sys doesn't match either */
- } else if (++(state->index) >= afs_sysnamecount
- || !afs_sysnamelist[state->index])
- return 0; /* end of list */
- strcpy(state->name+state->offset, afs_sysnamelist[state->index]);
- return 1;
+ int num = afs_sysnamecount;
+ char **sysnamelist[MAXNUMSYSNAMES];
+
+ if (state->index == -1)
+ return 0; /* No list */
+
+ /* Check for the initial state of aname != "@sys" in Check_AtSys */
+ if (state->offset == -1 && state->allocked == 0) {
+ register char *tname;
+
+ /* Check for .*@sys */
+ for (tname = state->name; *tname; tname++)
+ /*Move to the end of the string */ ;
+
+ if ((tname > state->name + 4) && (AFS_EQ_ATSYS(tname - 4))) {
+ state->offset = (tname - 4) - state->name;
+ tname = (char *)osi_AllocLargeSpace(AFS_LRALLOCSIZ);
+ strncpy(tname, state->name, state->offset);
+ state->name = tname;
+ state->allocked = 1;
+ num = 0;
+ state->index =
+ afs_getsysname(areq, avc, state->name + state->offset, &num,
+ sysnamelist);
+ return 1;
+ } else
+ return 0; /* .*@sys doesn't match either */
+ } else {
+ register struct unixuser *au;
+ register afs_int32 error;
+
+ *sysnamelist = afs_sysnamelist;
+
+ if (afs_nfsexporter) {
+ au = afs_GetUser(areq->uid, avc->fid.Cell, 0);
+ if (au->exporter) {
+ error =
+ EXP_SYSNAME(au->exporter, (char *)0, sysnamelist, num);
+ if (error) {
+ return 0;
+ }
+ }
+ afs_PutUser(au, 0);
+ }
+ if (++(state->index) >= num || !(*sysnamelist)[(unsigned int)state->index])
+ return 0; /* end of list */
+ }
+ strcpy(state->name + state->offset, (*sysnamelist)[(unsigned int)state->index]);
+ return 1;
}
-#if (defined(AFS_SGI62_ENV) || defined(AFS_SUN57_64BIT_ENV))
-extern int BlobScan(ino64_t *afile, afs_int32 ablob);
-#else
-#if defined AFS_LINUX_64BIT_KERNEL
-extern int BlobScan(long *afile, afs_int32 ablob);
-#else
-extern int BlobScan(afs_int32 *afile, afs_int32 ablob);
-#endif
-#endif
-
+extern int BlobScan(struct dcache * afile, afs_int32 ablob);
/* called with an unlocked directory and directory cookie. Areqp
* describes who is making the call.
* ensure that vcaches created for failed RPC's to older servers have the
* CForeign bit set.
*/
-struct vcache * BStvc = (struct vcache *) 0;
-void afs_DoBulkStat(adp, dirCookie, areqp)
- struct vcache *adp;
- long dirCookie;
- struct vrequest *areqp;
+static struct vcache *BStvc = NULL;
+
+int
+afs_DoBulkStat(struct vcache *adp, long dirCookie, struct vrequest *areqp)
{
int nentries; /* # of entries to prefetch */
int nskip; /* # of slots in the LRU queue to skip */
struct dcache *dcp; /* chunk containing the dir block */
char *statMemp; /* status memory block */
char *cbfMemp; /* callback and fid memory block */
- long temp; /* temp for holding chunk length, &c. */
+ afs_size_t temp; /* temp for holding chunk length, &c. */
struct AFSFid *fidsp; /* file IDs were collecting */
struct AFSCallBack *cbsp; /* call back pointers */
struct AFSCallBack *tcbp; /* temp callback ptr */
struct afs_q *tq; /* temp queue variable */
AFSCBFids fidParm; /* file ID parm for bulk stat */
AFSBulkStats statParm; /* stat info parm for bulk stat */
- int fidIndex; /* which file were stating */
- struct conn *tcp; /* conn for call */
+ int fidIndex = 0; /* which file were stating */
+ struct conn *tcp = 0; /* conn for call */
AFSCBs cbParm; /* callback parm for bulk stat */
struct server *hostp = 0; /* host we got callback from */
- long origEvenCBs; /* original # of callbacks for even-fid files */
- long origOddCBs; /* original # of callbacks for odd-fid files */
- long origEvenZaps; /* original # of recycles for even-fid files */
- long origOddZaps; /* original # of recycles for odd-fid files */
long startTime; /* time we started the call,
* for callback expiration base
*/
- int statSeqNo; /* Valued of file size to detect races */
+ afs_size_t statSeqNo = 0; /* Valued of file size to detect races */
int code; /* error code */
long newIndex; /* new index in the dir */
struct DirEntry *dirEntryp; /* dir entry we are examining */
int i;
struct VenusFid afid; /* file ID we are using now */
struct VenusFid tfid; /* another temp. file ID */
- afs_int32 retry; /* handle low-level SGI MP race conditions */
+ afs_int32 retry; /* handle low-level SGI MP race conditions */
long volStates; /* flags from vol structure */
- struct volume *volp=0; /* volume ptr */
+ struct volume *volp = 0; /* volume ptr */
struct VenusFid dotdot;
- int flagIndex; /* First file with bulk fetch flag set */
- XSTATS_DECLS
-
+ int flagIndex = 0; /* First file with bulk fetch flag set */
+ int inlinebulk = 0; /* Did we use InlineBulk RPC or not? */
+ XSTATS_DECLS;
/* first compute some basic parameters. We dont want to prefetch more
* than a fraction of the cache in any given call, and we want to preserve
* a portion of the LRU queue in any event, so as to avoid thrashing
nentries = afs_cacheStats / 8;
/* dont bother prefetching more than one calls worth of info */
- if (nentries > AFSCBMAX) nentries = AFSCBMAX;
+ if (nentries > AFSCBMAX)
+ nentries = AFSCBMAX;
/* heuristic to make sure that things fit in 4K. This means that
* we shouldnt make it any bigger than 47 entries. I am typically
* going to keep it a little lower, since we don't want to load
* too much of the stat cache.
*/
- if (nentries > 30) nentries = 30;
+ if (nentries > 30)
+ nentries = 30;
/* now, to reduce the stack size, well allocate two 4K blocks,
* one for fids and callbacks, and one for stat info. Well set
* up our pointers to the memory from there, too.
*/
statMemp = osi_AllocLargeSpace(nentries * sizeof(AFSFetchStatus));
- statsp = (struct AFSFetchStatus *) statMemp;
- cbfMemp = osi_AllocLargeSpace(nentries *
- (sizeof(AFSCallBack) + sizeof(AFSFid)));
+ statsp = (struct AFSFetchStatus *)statMemp;
+ cbfMemp =
+ osi_AllocLargeSpace(nentries *
+ (sizeof(AFSCallBack) + sizeof(AFSFid)));
fidsp = (AFSFid *) cbfMemp;
cbsp = (AFSCallBack *) (cbfMemp + nentries * sizeof(AFSFid));
* We skip files that already have stat cache entries, since we
* dont want to bulk stat files that are already in the cache.
*/
-tagain:
+ tagain:
code = afs_VerifyVCache(adp, areqp);
- if (code) goto done;
+ if (code)
+ goto done2;
- dcp = afs_GetDCache(adp, 0, areqp, &temp, &temp, 1);
+ dcp = afs_GetDCache(adp, (afs_size_t) 0, areqp, &temp, &temp, 1);
if (!dcp) {
code = ENOENT;
- goto done;
+ goto done2;
}
/* lock the directory cache entry */
ObtainReadLock(&adp->lock);
+ ObtainReadLock(&dcp->lock);
/*
* Make sure that the data in the cache is current. There are two
* 2. The cache data is no longer valid
*/
while ((adp->states & CStatd)
- && (dcp->flags & DFFetching)
+ && (dcp->dflags & DFFetching)
&& hsame(adp->m.DataVersion, dcp->f.versionNo)) {
- dcp->flags |= DFWaiting;
+ afs_Trace4(afs_iclSetp, CM_TRACE_DCACHEWAIT, ICL_TYPE_STRING,
+ __FILE__, ICL_TYPE_INT32, __LINE__, ICL_TYPE_POINTER, dcp,
+ ICL_TYPE_INT32, dcp->dflags);
+ ReleaseReadLock(&dcp->lock);
ReleaseReadLock(&adp->lock);
afs_osi_Sleep(&dcp->validPos);
ObtainReadLock(&adp->lock);
+ ObtainReadLock(&dcp->lock);
}
if (!(adp->states & CStatd)
|| !hsame(adp->m.DataVersion, dcp->f.versionNo)) {
+ ReleaseReadLock(&dcp->lock);
ReleaseReadLock(&adp->lock);
afs_PutDCache(dcp);
goto tagain;
/* now we have dir data in the cache, so scan the dir page */
fidIndex = 0;
flagIndex = 0;
- while (1) { /* Should probably have some constant bound */
+ while (1) { /* Should probably have some constant bound */
/* look for first safe entry to examine in the directory. BlobScan
* looks for a the 1st allocated dir after the dirCookie slot.
*/
- newIndex = BlobScan(&dcp->f.inode, (dirCookie>>5));
- if (newIndex == 0) break;
+ newIndex = BlobScan(dcp, (dirCookie >> 5));
+ if (newIndex == 0)
+ break;
/* remember the updated directory cookie */
dirCookie = newIndex << 5;
/* get a ptr to the dir entry */
- dirEntryp =(struct DirEntry *)afs_dir_GetBlob(&dcp->f.inode, newIndex);
- if (!dirEntryp) break;
+ dirEntryp =
+ (struct DirEntry *)afs_dir_GetBlob(dcp, newIndex);
+ if (!dirEntryp)
+ break;
/* dont copy more than we have room for */
if (fidIndex >= nentries) {
- DRelease((char *) dirEntryp, 0);
- break;
+ DRelease((struct buffer *)dirEntryp, 0);
+ break;
}
/* now, if the dir entry looks good, copy it out to our list. Vnode
tfid.Fid.Vnode = ntohl(dirEntryp->fid.vnode);
tfid.Fid.Unique = ntohl(dirEntryp->fid.vunique);
do {
- retry = 0;
- ObtainWriteLock(&afs_xvcache, 130);
- tvcp = afs_FindVCache(&tfid, 0, 0, &retry, 0 /* no stats | LRU */);
- if (tvcp && retry) {
- ReleaseWriteLock(&afs_xvcache);
- afs_PutVCache(tvcp);
- }
+ retry = 0;
+ ObtainWriteLock(&afs_xvcache, 130);
+ tvcp = afs_FindVCache(&tfid, &retry, 0 /* no stats | LRU */ );
+ if (tvcp && retry) {
+ ReleaseWriteLock(&afs_xvcache);
+ afs_PutVCache(tvcp);
+ }
} while (tvcp && retry);
- if (!tvcp) { /* otherwise, create manually */
- tvcp = afs_NewVCache(&tfid, hostp, 0, 0);
- ObtainWriteLock(&tvcp->lock, 505);
- ReleaseWriteLock(&afs_xvcache);
- afs_RemoveVCB(&tfid);
- ReleaseWriteLock(&tvcp->lock);
+ if (!tvcp) { /* otherwise, create manually */
+ tvcp = afs_NewVCache(&tfid, hostp);
+ ObtainWriteLock(&tvcp->lock, 505);
+ ReleaseWriteLock(&afs_xvcache);
+ afs_RemoveVCB(&tfid);
+ ReleaseWriteLock(&tvcp->lock);
} else {
- ReleaseWriteLock(&afs_xvcache);
+ ReleaseWriteLock(&afs_xvcache);
}
if (!tvcp)
- goto done; /* can't happen at present, more's the pity */
+ goto done; /* can't happen at present, more's the pity */
/* WARNING: afs_DoBulkStat uses the Length field to store a
* sequence number for each bulk status request. Under no
* if the new length will be ignored when afs_ProcessFS is
* called with new stats. */
#ifdef AFS_SGI_ENV
- if (!(tvcp->states & (CStatd|CBulkFetching))
- && (tvcp->execsOrWriters <= 0)
- && !afs_DirtyPages(tvcp)
- && !AFS_VN_MAPPED((vnode_t*)tvcp))
+ if (!(tvcp->states & (CStatd | CBulkFetching))
+ && (tvcp->execsOrWriters <= 0)
+ && !afs_DirtyPages(tvcp)
+ && !AFS_VN_MAPPED((vnode_t *) tvcp))
#else
- if (!(tvcp->states & (CStatd|CBulkFetching))
- && (tvcp->execsOrWriters <= 0)
- && !afs_DirtyPages(tvcp))
+ if (!(tvcp->states & (CStatd | CBulkFetching))
+ && (tvcp->execsOrWriters <= 0)
+ && !afs_DirtyPages(tvcp))
#endif
{
* preserve the value of the file size. We could
* flush the pages, but it wouldn't be worthwhile.
*/
- bcopy((char *) &tfid.Fid, (char *)(fidsp+fidIndex),
- sizeof(*fidsp));
+ memcpy((char *)(fidsp + fidIndex), (char *)&tfid.Fid,
+ sizeof(*fidsp));
tvcp->states |= CBulkFetching;
tvcp->m.Length = statSeqNo;
fidIndex++;
}
afs_PutVCache(tvcp);
- } /* if dir vnode has non-zero entry */
+ }
+ /* if dir vnode has non-zero entry */
/* move to the next dir entry by adding in the # of entries
* used by this dir entry.
*/
temp = afs_dir_NameBlobs(dirEntryp->name) << 5;
- DRelease((char *) dirEntryp, 0);
- if (temp <= 0) break;
+ DRelease((struct buffer *)dirEntryp, 0);
+ if (temp <= 0)
+ break;
dirCookie += temp;
- } /* while loop over all dir entries */
+ } /* while loop over all dir entries */
/* now release the dir lock and prepare to make the bulk RPC */
+ ReleaseReadLock(&dcp->lock);
ReleaseReadLock(&adp->lock);
/* release the chunk */
afs_PutDCache(dcp);
/* dont make a null call */
- if (fidIndex == 0) goto done;
+ if (fidIndex == 0)
+ goto done;
do {
/* setup the RPC parm structures */
if (tcp) {
hostp = tcp->srvr->server;
XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_BULKSTATUS);
-#ifdef RX_ENABLE_LOCKS
- AFS_GUNLOCK();
-#endif /* RX_ENABLE_LOCKS */
- code = RXAFS_BulkStatus(tcp->id, &fidParm, &statParm, &cbParm,
- &volSync);
-#ifdef RX_ENABLE_LOCKS
- AFS_GLOCK();
-#endif /* RX_ENABLE_LOCKS */
+ RX_AFS_GUNLOCK();
+
+ if (!(tcp->srvr->server->flags & SNO_INLINEBULK)) {
+ code =
+ RXAFS_InlineBulkStatus(tcp->id, &fidParm, &statParm,
+ &cbParm, &volSync);
+ if (code == RXGEN_OPCODE) {
+ tcp->srvr->server->flags |= SNO_INLINEBULK;
+ inlinebulk = 0;
+ code =
+ RXAFS_BulkStatus(tcp->id, &fidParm, &statParm,
+ &cbParm, &volSync);
+ } else
+ inlinebulk = 1;
+ } else {
+ inlinebulk = 0;
+ code =
+ RXAFS_BulkStatus(tcp->id, &fidParm, &statParm, &cbParm,
+ &volSync);
+ }
+ RX_AFS_GLOCK();
XSTATS_END_TIME;
- }
- else code = -1;
- } while (afs_Analyze(tcp, code, &adp->fid, areqp,
- AFS_STATS_FS_RPCIDX_BULKSTATUS, SHARED_LOCK, (struct cell *)0));
+ } else
+ code = -1;
+ } while (afs_Analyze
+ (tcp, code, &adp->fid, areqp, AFS_STATS_FS_RPCIDX_BULKSTATUS,
+ SHARED_LOCK, NULL));
/* now, if we didnt get the info, bail out. */
- if (code) goto done;
+ if (code)
+ goto done;
/* we need vol flags to create the entries properly */
dotdot.Fid.Volume = 0;
volStates = volp->states;
if (volp->dotdot.Fid.Volume != 0)
dotdot = volp->dotdot;
- }
- else volStates = 0;
+ } else
+ volStates = 0;
/* find the place to merge the info into We do this by skipping
* nskip entries in the LRU queue. The more we skip, the more
* referenced file.
*/
reskip:
- nskip = afs_cacheStats / 2; /* preserved fraction of the cache */
+ nskip = afs_cacheStats / 2; /* preserved fraction of the cache */
ObtainReadLock(&afs_xvcache);
if (QEmpty(&VLRU)) {
- /* actually a serious error, probably should panic. Probably will
- * panic soon, oh well. */
- ReleaseReadLock(&afs_xvcache);
- afs_warnuser("afs_DoBulkStat: VLRU empty!");
- goto done;
+ /* actually a serious error, probably should panic. Probably will
+ * panic soon, oh well. */
+ ReleaseReadLock(&afs_xvcache);
+ afs_warnuser("afs_DoBulkStat: VLRU empty!");
+ goto done;
}
if ((VLRU.next->prev != &VLRU) || (VLRU.prev->next != &VLRU)) {
- refpanic ("Bulkstat VLRU inconsistent");
+ refpanic("Bulkstat VLRU inconsistent");
}
- for(tq = VLRU.next; tq != &VLRU; tq = QNext(tq)) {
- if (--nskip <= 0) break;
+ for (tq = VLRU.next; tq != &VLRU; tq = QNext(tq)) {
+ if (--nskip <= 0)
+ break;
else if (QNext(QPrev(tq)) != tq) {
- BStvc = QTOV(tq);
- refpanic ("BulkStat VLRU inconsistent");
+ BStvc = QTOV(tq);
+ refpanic("BulkStat VLRU inconsistent");
}
}
- if (tq != &VLRU) lruvcp = QTOV(tq);
- else lruvcp = QTOV(VLRU.next);
+ if (tq != &VLRU)
+ lruvcp = QTOV(tq);
+ else
+ lruvcp = QTOV(VLRU.next);
/* now we have to hold this entry, so that it does not get moved
* into the free list while we're running. It could still get
*/
retry = 0;
osi_vnhold(lruvcp, &retry);
- ReleaseReadLock(&afs_xvcache); /* could be read lock */
+ ReleaseReadLock(&afs_xvcache); /* could be read lock */
if (retry)
- goto reskip;
+ goto reskip;
/* 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
*
* We also have to take into account racing token revocations.
*/
- for(i=0; i<fidIndex; i++) {
+ for (i = 0; i < fidIndex; i++) {
+ if ((&statsp[i])->errorCode)
+ continue;
afid.Cell = adp->fid.Cell;
afid.Fid.Volume = adp->fid.Fid.Volume;
afid.Fid.Vnode = fidsp[i].Vnode;
afid.Fid.Unique = fidsp[i].Unique;
do {
- retry = 0;
- ObtainReadLock(&afs_xvcache);
- tvcp = afs_FindVCache(&afid, 1, 0, &retry, 0/* !stats&!lru*/);
- ReleaseReadLock(&afs_xvcache);
+ retry = 0;
+ ObtainReadLock(&afs_xvcache);
+ tvcp = afs_FindVCache(&afid, &retry, 0 /* !stats&!lru */ );
+ ReleaseReadLock(&afs_xvcache);
} while (tvcp && retry);
/* The entry may no longer exist */
}
/* now we have the entry held, but we need to fill it in */
- ObtainWriteLock(&tvcp->lock,131);
+ ObtainWriteLock(&tvcp->lock, 131);
/* if CBulkFetching is not set, or if the file size no longer
* matches the value we placed there when we set the CBulkFetching
}
/* now copy ".." entry back out of volume structure, if necessary */
- if (tvcp->mvstat == 2 && (dotdot.Fid.Volume != 0)) {
+ if (tvcp->mvstat == 2 && (dotdot.Fid.Volume != 0)) {
if (!tvcp->mvid)
- tvcp->mvid = (struct VenusFid *) osi_AllocSmallSpace(sizeof(struct VenusFid));
+ tvcp->mvid = (struct VenusFid *)
+ osi_AllocSmallSpace(sizeof(struct VenusFid));
*tvcp->mvid = dotdot;
}
- ObtainWriteLock(&afs_xvcache,132);
+ ObtainWriteLock(&afs_xvcache, 132);
if ((VLRU.next->prev != &VLRU) || (VLRU.prev->next != &VLRU)) {
- refpanic ("Bulkstat VLRU inconsistent2");
+ refpanic("Bulkstat VLRU inconsistent2");
}
- if ((QNext(QPrev(&tvcp->vlruq)) != &tvcp->vlruq)
- || (QPrev(QNext(&tvcp->vlruq)) != &tvcp->vlruq))
- refpanic ("Bulkstat VLRU inconsistent4");
- if ((QNext(QPrev(&lruvcp->vlruq)) != &lruvcp->vlruq)
- || (QPrev(QNext(&lruvcp->vlruq)) != &lruvcp->vlruq))
- refpanic ("Bulkstat VLRU inconsistent5");
-
- if (tvcp != lruvcp) { /* if they are == don't move it, don't corrupt vlru */
- QRemove(&tvcp->vlruq);
- QAdd(&lruvcp->vlruq, &tvcp->vlruq);
+ if ((QNext(QPrev(&tvcp->vlruq)) != &tvcp->vlruq)
+ || (QPrev(QNext(&tvcp->vlruq)) != &tvcp->vlruq)) {
+ refpanic("Bulkstat VLRU inconsistent4");
+ }
+ if ((QNext(QPrev(&lruvcp->vlruq)) != &lruvcp->vlruq)
+ || (QPrev(QNext(&lruvcp->vlruq)) != &lruvcp->vlruq)) {
+ refpanic("Bulkstat VLRU inconsistent5");
+ }
+
+ if (tvcp != lruvcp) { /* if they are == don't move it, don't corrupt vlru */
+ QRemove(&tvcp->vlruq);
+ QAdd(&lruvcp->vlruq, &tvcp->vlruq);
}
if ((VLRU.next->prev != &VLRU) || (VLRU.prev->next != &VLRU)) {
- refpanic ("Bulkstat VLRU inconsistent3");
+ refpanic("Bulkstat VLRU inconsistent3");
+ }
+ if ((QNext(QPrev(&tvcp->vlruq)) != &tvcp->vlruq)
+ || (QPrev(QNext(&tvcp->vlruq)) != &tvcp->vlruq)) {
+ refpanic("Bulkstat VLRU inconsistent5");
+ }
+ if ((QNext(QPrev(&lruvcp->vlruq)) != &lruvcp->vlruq)
+ || (QPrev(QNext(&lruvcp->vlruq)) != &lruvcp->vlruq)) {
+ refpanic("Bulkstat VLRU inconsistent6");
}
- if ((QNext(QPrev(&tvcp->vlruq)) != &tvcp->vlruq)
- || (QPrev(QNext(&tvcp->vlruq)) != &tvcp->vlruq))
- refpanic ("Bulkstat VLRU inconsistent5");
- if ((QNext(QPrev(&lruvcp->vlruq)) != &lruvcp->vlruq)
- || (QPrev(QNext(&lruvcp->vlruq)) != &lruvcp->vlruq))
- refpanic ("Bulkstat VLRU inconsistent6");
ReleaseWriteLock(&afs_xvcache);
ObtainWriteLock(&afs_xcbhash, 494);
* We only do this if the entry looks clear.
*/
afs_ProcessFS(tvcp, &statsp[i], areqp);
-#ifdef AFS_LINUX22_ENV
- /* overwrite the ops if it's a directory or symlink. */
- if (vType(tvcp) == VDIR)
- tvcp->v.v_op = &afs_dir_iops;
- else if (vType(tvcp) == VLNK)
- tvcp->v.v_op = &afs_symlink_iops;
+#if defined(AFS_LINUX22_ENV)
+ afs_fill_inode(AFSTOV(tvcp), NULL); /* reset inode operations */
#endif
/* do some accounting for bulk stats: mark this entry as
afs_bulkStatsDone++;
/* merge in vol info */
- if (volStates & VRO) tvcp->states |= CRO;
- if (volStates & VBackup) tvcp->states |= CBackup;
- if (volStates & VForeign) tvcp->states |= CForeign;
+ if (volStates & VRO)
+ tvcp->states |= CRO;
+ if (volStates & VBackup)
+ tvcp->states |= CBackup;
+ if (volStates & VForeign)
+ tvcp->states |= CForeign;
/* merge in the callback info */
tvcp->states |= CTruth;
tcbp = cbsp + i;
if (tcbp->ExpirationTime != 0) {
- tvcp->cbExpires = tcbp->ExpirationTime+startTime;
+ tvcp->cbExpires = tcbp->ExpirationTime + startTime;
tvcp->callback = hostp;
tvcp->states |= CStatd;
afs_QueueCallback(tvcp, CBHash(tcbp->ExpirationTime), volp);
- }
- else if (tvcp->states & CRO) {
+ } else if (tvcp->states & CRO) {
/* ordinary callback on a read-only volume -- AFS 3.2 style */
- tvcp->cbExpires = 3600+startTime;
+ tvcp->cbExpires = 3600 + startTime;
tvcp->callback = hostp;
tvcp->states |= CStatd;
afs_QueueCallback(tvcp, CBHash(3600), volp);
- }
- else {
+ } else {
tvcp->callback = 0;
- tvcp->states &= ~(CStatd|CUnique);
+ tvcp->states &= ~(CStatd | CUnique);
afs_DequeueCallback(tvcp);
- if ((tvcp->states & CForeign) || (vType(tvcp) == VDIR))
- osi_dnlc_purgedp (tvcp); /* if it (could be) a directory */
+ if ((tvcp->states & CForeign) || (vType(tvcp) == VDIR))
+ osi_dnlc_purgedp(tvcp); /* if it (could be) a directory */
}
ReleaseWriteLock(&afs_xcbhash);
ReleaseWriteLock(&tvcp->lock);
/* finally, we're done with the entry */
afs_PutVCache(tvcp);
- } /* for all files we got back */
+ } /* for all files we got back */
/* finally return the pointer into the LRU queue */
afs_PutVCache(lruvcp);
done:
/* Be sure to turn off the CBulkFetching flags */
- for(i=flagIndex; i<fidIndex; i++) {
+ for (i = flagIndex; i < fidIndex; i++) {
afid.Cell = adp->fid.Cell;
afid.Fid.Volume = adp->fid.Fid.Volume;
afid.Fid.Vnode = fidsp[i].Vnode;
afid.Fid.Unique = fidsp[i].Unique;
do {
- retry = 0;
- ObtainReadLock(&afs_xvcache);
- tvcp = afs_FindVCache(&afid, 1, 0, &retry, 0/* !stats&!lru*/);
- ReleaseReadLock(&afs_xvcache);
+ retry = 0;
+ ObtainReadLock(&afs_xvcache);
+ tvcp = afs_FindVCache(&afid, &retry, 0 /* !stats&!lru */ );
+ ReleaseReadLock(&afs_xvcache);
} while (tvcp && retry);
- if (tvcp != NULL
- && (tvcp->states & CBulkFetching)
+ if (tvcp != NULL && (tvcp->states & CBulkFetching)
&& (tvcp->m.Length == statSeqNo)) {
- tvcp->states &= ~CBulkFetching;
+ tvcp->states &= ~CBulkFetching;
}
if (tvcp != NULL) {
- afs_PutVCache(tvcp);
+ afs_PutVCache(tvcp);
}
}
- if ( volp )
+ if (volp)
afs_PutVolume(volp, READ_LOCK);
-
+
+ /* 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_STATS_FS_RPCIDX_BULKSTATUS, SHARED_LOCK, NULL);
+ code = (&statsp[0])->errorCode;
+ }
+ } else {
+ code = 0;
+ }
+ done2:
osi_FreeLargeSpace(statMemp);
osi_FreeLargeSpace(cbfMemp);
+ return code;
}
/* was: (AFS_DEC_ENV) || defined(AFS_OSF30_ENV) || defined(AFS_NCR_ENV) */
-int AFSDOBULK = 1;
-
-#ifdef AFS_OSF_ENV
-afs_lookup(adp, ndp)
- struct vcache *adp;
- struct nameidata *ndp; {
- char aname[MAXNAMLEN+1]; /* XXX */
- struct vcache **avcp = (struct vcache **)&(ndp->ni_vp);
- struct ucred *acred = ndp->ni_cred;
- int wantparent = ndp->ni_nameiop & WANTPARENT;
- int opflag = ndp->ni_nameiop & OPFLAG;
-#else /* AFS_OSF_ENV */
-#if defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
-afs_lookup(OSI_VC_ARG(adp), aname, avcp, pnp, flags, rdir, acred)
- struct pathname *pnp;
- int flags;
- struct vnode *rdir;
+static int AFSDOBULK = 1;
+
+int
+#ifdef AFS_OSF_ENV
+afs_lookup(OSI_VC_DECL(adp), char *aname, struct vcache **avcp, struct AFS_UCRED *acred, int opflag, int wantparent)
+#elif defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
+afs_lookup(OSI_VC_DECL(adp), char *aname, struct vcache **avcp, struct pathname *pnp, int flags, struct vnode *rdir, struct AFS_UCRED *acred)
+#elif defined(UKERNEL)
+afs_lookup(OSI_VC_DECL(adp), char *aname, struct vcache **avcp, struct AFS_UCRED *acred, int flags)
#else
-#if defined(UKERNEL)
-afs_lookup(adp, aname, avcp, acred, flags)
- int flags;
-#else
-afs_lookup(adp, aname, avcp, acred)
-#endif /* UKERNEL */
-#endif /* SUN5 || SGI */
- OSI_VC_DECL(adp);
- struct vcache **avcp;
- char *aname;
- struct AFS_UCRED *acred; {
+afs_lookup(OSI_VC_DECL(adp), char *aname, struct vcache **avcp, struct AFS_UCRED *acred)
#endif
+{
struct vrequest treq;
- char *tname = (char *)0;
- register struct vcache *tvc=0;
+ char *tname = NULL;
+ register struct vcache *tvc = 0;
register afs_int32 code;
+ register afs_int32 bulkcode = 0;
int pass = 0, hit = 0;
long dirCookie;
- extern afs_int32 afs_mariner; /*Writing activity to log?*/
- OSI_VC_CONVERT(adp)
+ extern afs_int32 afs_mariner; /*Writing activity to log? */
afs_hyper_t versionNo;
int no_read_access = 0;
- struct sysname_info sysState; /* used only for @sys checking */
+ struct sysname_info sysState; /* used only for @sys checking */
+ int dynrootRetry = 1;
+ struct afs_fakestat_state fakestate;
+ int tryEvalOnly = 0;
+ OSI_VC_CONVERT(adp);
AFS_STATCNT(afs_lookup);
-#ifdef AFS_OSF_ENV
- ndp->ni_dvp = (struct vnode *)adp;
- bcopy(ndp->ni_ptr, aname, ndp->ni_namelen);
- aname[ndp->ni_namelen] = '\0';
-#endif /* AFS_OSF_ENV */
+ afs_InitFakeStat(&fakestate);
+
+ if ((code = afs_InitReq(&treq, acred)))
+ goto done;
- *avcp = (struct vcache *) 0; /* Since some callers don't initialize it */
+#ifdef AFS_OSF_ENV
+ ndp->ni_dvp = AFSTOV(adp);
+#endif /* AFS_OSF_ENV */
- if (code = afs_InitReq(&treq, acred)) {
- goto done;
+#if defined(AFS_DARWIN_ENV)
+ /* Workaround for MacOSX Finder, which tries to look for
+ * .DS_Store and Contents under every directory.
+ */
+ if (afs_fakestat_enable && adp->mvstat == 1) {
+ if (strcmp(aname, ".DS_Store") == 0)
+ tryEvalOnly = 1;
+ if (strcmp(aname, "Contents") == 0)
+ tryEvalOnly = 1;
}
+#endif
+
+ if (tryEvalOnly)
+ code = afs_TryEvalFakeStat(&adp, &fakestate, &treq);
+ else
+ code = afs_EvalFakeStat(&adp, &fakestate, &treq);
+ if (tryEvalOnly && adp->mvstat == 1)
+ code = ENOENT;
+ if (code)
+ goto done;
+
+ *avcp = NULL; /* Since some callers don't initialize it */
/* come back to here if we encounter a non-existent object in a read-only
- volume's directory */
+ * volume's directory */
redo:
- *avcp = (struct vcache *) 0; /* Since some callers don't initialize it */
+ *avcp = NULL; /* Since some callers don't initialize it */
+ bulkcode = 0;
if (!(adp->states & CStatd)) {
- if (code = afs_VerifyVCache2(adp, &treq))
- goto done;
- }
- else code = 0;
+ if ((code = afs_VerifyVCache2(adp, &treq))) {
+ goto done;
+ }
+ } else
+ code = 0;
/* watch for ".." in a volume root */
if (adp->mvstat == 2 && aname[0] == '.' && aname[1] == '.' && !aname[2]) {
/* looking up ".." in root via special hacks */
- if (adp->mvid == (struct VenusFid *) 0 || adp->mvid->Fid.Volume == 0) {
+ 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 = (struct vnode *)adp;
+ struct vnode *rvp = AFSTOV(adp);
/*
ndp->ni_vp = rvp->v_vfsp->vfs_vnodecovered;
ndp->ni_dvp = ndp->ni_vp;
goto done;
}
/* otherwise we have the fid here, so we use it */
- tvc = afs_GetVCache(adp->mvid, &treq, (afs_int32 *)0,
- (struct vcache*)0, 0);
- afs_Trace3(afs_iclSetp, CM_TRACE_GETVCDOTDOT,
- ICL_TYPE_FID, adp->mvid, ICL_TYPE_POINTER, tvc,
- ICL_TYPE_INT32, code);
+ 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);
*avcp = tvc;
code = (tvc ? 0 : ENOENT);
hit = 1;
- if (tvc && !tvc->vrefCount) {
+ if (tvc && !VREFCOUNT(tvc)) {
osi_Panic("TT1");
}
if (code) {
- /*printf("LOOKUP GETVCDOTDOT -> %d\n", code);*/
+ /*printf("LOOKUP GETVCDOTDOT -> %d\n", code); */
}
goto done;
}
/* now check the access */
- if (treq.uid != adp->last_looker) {
- if (!afs_AccessOK(adp, PRSFS_LOOKUP, &treq, CHECK_MODE_BITS)) {
- *avcp = (struct vcache *)0;
- code = EACCES;
- goto done;
- }
- else adp->last_looker = treq.uid;
- }
+ if (treq.uid != adp->last_looker) {
+ if (!afs_AccessOK(adp, PRSFS_LOOKUP, &treq, CHECK_MODE_BITS)) {
+ *avcp = NULL;
+ code = EACCES;
+ goto done;
+ } else
+ adp->last_looker = treq.uid;
+ }
/* Check for read access as well. We need read access in order to
- stat files, but not to stat subdirectories. */
+ * stat files, but not to stat subdirectories. */
if (!afs_AccessOK(adp, PRSFS_READ, &treq, CHECK_MODE_BITS))
no_read_access = 1;
* I'm not fiddling with the LRUQ here, either, perhaps I should, or else
* invent a lightweight version of GetVCache.
*/
- if (aname[0] == '.' && !aname[1]) { /* special case */
- ObtainReadLock(&afs_xvcache);
+ if (aname[0] == '.' && !aname[1]) { /* special case */
+ ObtainReadLock(&afs_xvcache);
osi_vnhold(adp, 0);
- ReleaseReadLock(&afs_xvcache);
- code = 0;
- *avcp = tvc = adp;
- hit = 1;
- if (adp && !adp->vrefCount) {
+ ReleaseReadLock(&afs_xvcache);
+ code = 0;
+ *avcp = tvc = adp;
+ hit = 1;
+ if (adp && !VREFCOUNT(adp)) {
osi_Panic("TT2");
}
- goto done;
+ goto done;
}
Check_AtSys(adp, aname, &sysState, &treq);
tname = sysState.name;
/* 1st Check_AtSys and lookup by tname is required here, for now,
- because the dnlc is *not* told to remove entries for the parent
- dir of file/dir op that afs_LocalHero likes, but dnlc is informed
- if the cached entry for the parent dir is invalidated for a
- non-local change.
- Otherwise, we'd be able to do a dnlc lookup on an entry ending
- w/@sys and know the dnlc was consistent with reality. */
- tvc = osi_dnlc_lookup (adp, tname, WRITE_LOCK);
- *avcp = tvc; /* maybe wasn't initialized, but it is now */
+ * because the dnlc is *not* told to remove entries for the parent
+ * dir of file/dir op that afs_LocalHero likes, but dnlc is informed
+ * if the cached entry for the parent dir is invalidated for a
+ * non-local change.
+ * Otherwise, we'd be able to do a dnlc lookup on an entry ending
+ * w/@sys and know the dnlc was consistent with reality. */
+ tvc = osi_dnlc_lookup(adp, tname, WRITE_LOCK);
+ *avcp = tvc; /* maybe wasn't initialized, but it is now */
if (tvc) {
- if (no_read_access && vType(tvc) != VDIR) {
- /* need read access on dir to stat non-directory */
- afs_PutVCache(tvc, WRITE_LOCK);
- *avcp = (struct vcache *)0;
+ if (no_read_access && vType(tvc) != VDIR && vType(tvc) != VLNK) {
+ /* need read access on dir to stat non-directory / non-link */
+ afs_PutVCache(tvc);
+ *avcp = NULL;
code = EACCES;
goto done;
}
#ifdef AFS_LINUX22_ENV
- if (tvc->mvstat == 2) { /* we don't trust the dnlc for root vcaches */
- AFS_RELE(tvc);
+ if (tvc->mvstat == 2) { /* we don't trust the dnlc for root vcaches */
+ AFS_RELE(AFSTOV(tvc));
*avcp = 0;
- }
- else {
+ } else {
code = 0;
hit = 1;
goto done;
#endif /* linux22 */
}
- {
- register struct dcache *tdc;
- afs_int32 dirOffset, dirLen;
- ino_t theDir;
- struct VenusFid tfid;
-
- /* now we have to lookup the next fid */
- tdc = afs_GetDCache(adp, 0, &treq, &dirOffset, &dirLen, 1);
- if (!tdc) {
- *avcp = (struct vcache *)0; /* redundant, but harmless */
- code = EIO;
- goto done;
- }
-
- /* now we will just call dir package with appropriate inode.
- Dirs are always fetched in their entirety for now */
- ObtainReadLock(&adp->lock);
+ { /* sub-block just to reduce stack usage */
+ register struct dcache *tdc;
+ afs_size_t dirOffset, dirLen;
+ struct VenusFid tfid;
+
+ /* now we have to lookup the next fid */
+ tdc =
+ afs_GetDCache(adp, (afs_size_t) 0, &treq, &dirOffset, &dirLen, 1);
+ if (!tdc) {
+ *avcp = NULL; /* redundant, but harmless */
+ code = EIO;
+ goto done;
+ }
- /*
- * 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 ((adp->states & CStatd)
- && (tdc->flags & DFFetching)
- && hsame(adp->m.DataVersion, tdc->f.versionNo)) {
- tdc->flags |= DFWaiting;
- ReleaseReadLock(&adp->lock);
- afs_osi_Sleep(&tdc->validPos);
+ /* now we will just call dir package with appropriate inode.
+ * Dirs are always fetched in their entirety for now */
ObtainReadLock(&adp->lock);
- }
- if (!(adp->states & CStatd)
- || !hsame(adp->m.DataVersion, tdc->f.versionNo)) {
- ReleaseReadLock(&adp->lock);
- afs_PutDCache(tdc);
- goto redo;
- }
+ ObtainReadLock(&tdc->lock);
- /* Save the version number for when we call osi_dnlc_enter */
- hset(versionNo, tdc->f.versionNo);
-
- /*
- * check for, and handle "@sys" if it's there. We should be able
- * to avoid the alloc and the strcpy with a little work, but it's
- * not pressing. If there aren't any remote users (ie, via the
- * NFS translator), we have a slightly easier job.
- * the faster way to do this is to check for *aname == '@' and if
- * it's there, check for @sys, otherwise, assume there's no @sys
- * then, if the lookup fails, check for .*@sys...
- */
- /* above now implemented by Check_AtSys and Next_AtSys */
-
- /* lookup the name in the appropriate dir, and return a cache entry
- on the resulting fid */
- theDir = tdc->f.inode;
- code = afs_dir_LookupOffset(&theDir, sysState.name, &tfid.Fid, &dirCookie);
+ /*
+ * 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 ((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 the first lookup doesn't succeed, maybe it's got @sys in the name */
- while (code == ENOENT && Next_AtSys(adp, &treq, &sysState)) {
- code = afs_dir_LookupOffset(&theDir, sysState.name, &tfid.Fid, &dirCookie);
- }
- tname = sysState.name;
+ /* Save the version number for when we call osi_dnlc_enter */
+ hset(versionNo, tdc->f.versionNo);
+
+ /*
+ * check for, and handle "@sys" if it's there. We should be able
+ * to avoid the alloc and the strcpy with a little work, but it's
+ * not pressing. If there aren't any remote users (ie, via the
+ * NFS translator), we have a slightly easier job.
+ * the faster way to do this is to check for *aname == '@' and if
+ * it's there, check for @sys, otherwise, assume there's no @sys
+ * then, if the lookup fails, check for .*@sys...
+ */
+ /* above now implemented by Check_AtSys and Next_AtSys */
+
+ /* lookup the name in the appropriate dir, and return a cache entry
+ * on the resulting fid */
+ code =
+ afs_dir_LookupOffset(tdc, sysState.name, &tfid.Fid,
+ &dirCookie);
+
+ /* If the first lookup doesn't succeed, maybe it's got @sys in the name */
+ while (code == ENOENT && Next_AtSys(adp, &treq, &sysState))
+ code =
+ afs_dir_LookupOffset(tdc, sysState.name, &tfid.Fid,
+ &dirCookie);
+ tname = sysState.name;
+
+ ReleaseReadLock(&tdc->lock);
+ afs_PutDCache(tdc);
- ReleaseReadLock(&adp->lock);
- afs_PutDCache(tdc);
+ if (code == ENOENT && afs_IsDynroot(adp) && dynrootRetry) {
+ ReleaseReadLock(&adp->lock);
+ dynrootRetry = 0;
+ if (tname[0] == '.')
+ afs_LookupAFSDB(tname + 1);
+ else
+ afs_LookupAFSDB(tname);
+ if (tname && tname != aname)
+ osi_FreeLargeSpace(tname);
+ goto redo;
+ } else {
+ ReleaseReadLock(&adp->lock);
+ }
- /* new fid has same cell and volume */
- tfid.Cell = adp->fid.Cell;
- tfid.Fid.Volume = adp->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);
+ /* new fid has same cell and volume */
+ tfid.Cell = adp->fid.Cell;
+ tfid.Fid.Volume = adp->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);
- if (code) {
- if (code != ENOENT) {
- printf("LOOKUP dirLookupOff -> %d\n", code);
+ if (code) {
+ if (code != ENOENT) {
+ printf("LOOKUP dirLookupOff -> %d\n", code);
+ }
+ goto done;
}
- goto done;
- }
- /* 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_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.
+ /* prefetch some entries, if the dir is currently open. The variable
+ * dirCookie tells us where to start prefetching from.
*/
- do {
- retry = 0;
- ObtainReadLock(&afs_xvcache);
- tvc = afs_FindVCache(&tfid, 1, 0, &retry, 0/* !stats,!lru */);
- ReleaseReadLock(&afs_xvcache);
- } while (tvc && retry);
-
- if (!tvc || !(tvc->states & CStatd)) {
- afs_DoBulkStat(adp, dirCookie, &treq);
+ if (AFSDOBULK && adp->opens > 0 && !(adp->states & CForeign)
+ && !afs_IsDynroot(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.
+ */
+ do {
+ retry = 0;
+ ObtainReadLock(&afs_xvcache);
+ tvc = afs_FindVCache(&tfid, &retry, 0 /* !stats,!lru */ );
+ ReleaseReadLock(&afs_xvcache);
+ } while (tvc && retry);
+
+ if (!tvc || !(tvc->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);
+ tvc = NULL;
+ }
+ } else {
+ tvc = NULL;
+ bulkcode = 0;
}
- /* if the vcache isn't usable, release it */
- if (tvc && !(tvc->states & CStatd)) {
- afs_PutVCache(tvc);
- tvc = (struct vcache *) 0;
- }
- }
- else tvc = (struct vcache *) 0;
-
- /* now get the status info, if we don't already have it */
- /* This is kind of weird, but we might wind up accidentally calling
- * RXAFS_Lookup because we happened upon a file which legitimately
- * has a 0 uniquifier. That is the result of allowing unique to wrap
- * to 0. This was fixed in AFS 3.4. For CForeigh, Unique == 0 means that
- * the file has not yet been looked up.
- */
- if (!tvc) {
- afs_int32 cached = 0;
- if (!tfid.Fid.Unique && (adp->states & CForeign)) {
- tvc = afs_LookupVCache(&tfid, &treq, &cached, WRITE_LOCK,
- adp, tname);
- }
- if (!tvc) { /* lookup failed or wasn't called */
- tvc = afs_GetVCache(&tfid, &treq, &cached, (struct vcache*)0,
- WRITE_LOCK);
- }
- } /* if !tvc */
- } /* sub-block just to reduce stack usage */
+ /* now get the status info, if we don't already have it */
+ /* This is kind of weird, but we might wind up accidentally calling
+ * RXAFS_Lookup because we happened upon a file which legitimately
+ * has a 0 uniquifier. That is the result of allowing unique to wrap
+ * to 0. This was fixed in AFS 3.4. For CForeign, Unique == 0 means that
+ * the file has not yet been looked up.
+ */
+ if (!tvc) {
+ afs_int32 cached = 0;
+ if (!tfid.Fid.Unique && (adp->states & CForeign)) {
+ tvc = afs_LookupVCache(&tfid, &treq, &cached, adp, tname);
+ }
+ if (!tvc && !bulkcode) { /* lookup failed or wasn't called */
+ tvc = afs_GetVCache(&tfid, &treq, &cached, NULL);
+ }
+ } /* if !tvc */
+ } /* sub-block just to reduce stack usage */
if (tvc) {
- if (adp->states & CForeign)
- tvc->states |= CForeign;
+ 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 (afs_fakestat_enable == 2 && tvc->mvstat == 1) {
+ ObtainSharedLock(&tvc->lock, 680);
+ if (!tvc->linkData) {
+ UpgradeSToWLock(&tvc->lock, 681);
+ code = afs_HandleLink(tvc, &treq);
+ ConvertWToRLock(&tvc->lock);
+ } else {
+ ConvertSToRLock(&tvc->lock);
+ code = 0;
+ }
+ if (!code && !afs_strchr(tvc->linkData, ':'))
+ force_eval = 1;
+ ReleaseReadLock(&tvc->lock);
+ }
#if defined(UKERNEL) && defined(AFS_WEB_ENHANCEMENTS)
- if (!(flags & AFS_LOOKUP_NOEVAL))
- /* don't eval mount points */
+ if (!(flags & AFS_LOOKUP_NOEVAL))
+ /* don't eval mount points */
#endif /* UKERNEL && AFS_WEB_ENHANCEMENTS */
- if (tvc->mvstat == 1) {
- /* a mt point, possibly unevaluated */
- struct volume *tvolp;
-
- ObtainWriteLock(&tvc->lock,133);
- code = EvalMountPoint(tvc, adp, &tvolp, &treq);
- ReleaseWriteLock(&tvc->lock);
+ if (tvc->mvstat == 1 && force_eval) {
+ /* a mt point, possibly unevaluated */
+ struct volume *tvolp;
- if (code) {
- if (tvolp) afs_PutVolume(tvolp, WRITE_LOCK);
- goto done;
- }
+ ObtainWriteLock(&tvc->lock, 133);
+ code = EvalMountPoint(tvc, adp, &tvolp, &treq);
+ ReleaseWriteLock(&tvc->lock);
- /* next, we want to continue using the target of the mt point */
- if (tvc->mvid && (tvc->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);
- uvc = tvc; /* remember for later */
-
- if (tvolp && (tvolp->states & VForeign)) {
- /* XXXX tvolp has ref cnt on but not locked! XXX */
- tvc = afs_GetRootVCache(tvc->mvid, &treq, (afs_int32 *)0, tvolp, WRITE_LOCK);
- } else {
- tvc = afs_GetVCache(tvc->mvid, &treq, (afs_int32 *)0,
- (struct vcache*)0, WRITE_LOCK);
+ if (code) {
+ afs_PutVCache(tvc);
+ if (tvolp)
+ afs_PutVolume(tvolp, WRITE_LOCK);
+ goto done;
}
- afs_PutVCache(uvc, WRITE_LOCK); /* we're done with it */
- if (!tvc) {
- code = ENOENT;
+ /* next, we want to continue using the target of the mt point */
+ if (tvc->mvid && (tvc->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);
+ uvc = tvc; /* remember for later */
+
+ if (tvolp && (tvolp->states & VForeign)) {
+ /* XXXX tvolp has ref cnt on but not locked! XXX */
+ tvc =
+ afs_GetRootVCache(tvc->mvid, &treq, NULL, tvolp);
+ } else {
+ tvc = afs_GetVCache(tvc->mvid, &treq, NULL, NULL);
+ }
+ afs_PutVCache(uvc); /* we're done with it */
+
+ if (!tvc) {
+ code = ENOENT;
+ if (tvolp) {
+ afs_PutVolume(tvolp, WRITE_LOCK);
+ }
+ goto done;
+ }
+
+ /* now, if we came via a new mt pt (say because of a new
+ * release of a R/O volume), we must reevaluate the ..
+ * ptr to point back to the appropriate place */
if (tvolp) {
+ ObtainWriteLock(&tvc->lock, 134);
+ if (tvc->mvid == NULL) {
+ tvc->mvid = (struct VenusFid *)
+ osi_AllocSmallSpace(sizeof(struct VenusFid));
+ }
+ /* setup backpointer */
+ *tvc->mvid = tvolp->dotdot;
+ ReleaseWriteLock(&tvc->lock);
afs_PutVolume(tvolp, WRITE_LOCK);
}
+ } else {
+ afs_PutVCache(tvc);
+ code = ENOENT;
+ if (tvolp)
+ afs_PutVolume(tvolp, WRITE_LOCK);
goto done;
}
-
- /* now, if we came via a new mt pt (say because of a new
- * release of a R/O volume), we must reevaluate the ..
- * ptr to point back to the appropriate place */
- if (tvolp) {
- ObtainWriteLock(&tvc->lock,134);
- if (tvc->mvid == (struct VenusFid *) 0) {
- tvc->mvid = (struct VenusFid *) osi_AllocSmallSpace(sizeof(struct VenusFid));
- }
- /* setup backpointer */
- *tvc->mvid = tvolp->dotdot;
- ReleaseWriteLock(&tvc->lock);
- afs_PutVolume(tvolp, WRITE_LOCK);
- }
- }
- else {
- afs_PutVCache(tvc, WRITE_LOCK);
- code = ENOENT;
- if (tvolp) afs_PutVolume(tvolp, WRITE_LOCK);
- goto done;
}
- }
*avcp = tvc;
- if (tvc && !tvc->vrefCount) {
+ if (tvc && !VREFCOUNT(tvc)) {
osi_Panic("TT3");
}
code = 0;
- }
- else {
+ } else {
/* if we get here, we found something in a directory that couldn't
- be located (a Multics "connection failure"). If the volume is
- read-only, we try flushing this entry from the cache and trying
- again. */
+ * 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* */
+ pass = 1; /* try this *once* */
ObtainWriteLock(&afs_xcbhash, 495);
afs_DequeueCallback(adp);
/* re-stat to get later version */
code = ENOENT;
}
-done:
+ done:
/* put the network buffer back, if need be */
- if (tname != aname && tname) osi_FreeLargeSpace(tname);
+ if (tname != aname && tname)
+ osi_FreeLargeSpace(tname);
if (code == 0) {
#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))) {
- afs_PutVCache(*avcp, WRITE_LOCK);
+ if (!FidCmp(&(tvc->fid), &(adp->fid))) {
+ afs_PutVCache(*avcp);
*avcp = NULL;
+ afs_PutFakeStat(&fakestate);
return afs_CheckCode(EISDIR, &treq, 18);
}
}
-#endif /* AFS_OSF_ENV */
+#endif /* AFS_OSF_ENV */
if (afs_mariner)
- afs_AddMarinerName(aname, tvc);
+ afs_AddMarinerName(aname, tvc);
#if defined(UKERNEL) && defined(AFS_WEB_ENHANCEMENTS)
- if (!(flags & AFS_LOOKUP_NOEVAL))
- /* Here we don't enter the name into the DNLC because we want the
- evaluated mount dir to be there (the vcache for the mounted volume)
- rather than the vc of the mount point itself. we can still find the
- mount point's vc in the vcache by its fid. */
+ if (!(flags & AFS_LOOKUP_NOEVAL))
+ /* Here we don't enter the name into the DNLC because we want the
+ * evaluated mount dir to be there (the vcache for the mounted volume)
+ * 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) {
- osi_dnlc_enter (adp, aname, tvc, &versionNo);
- }
- else {
+ if (!hit) {
+ osi_dnlc_enter(adp, aname, tvc, &versionNo);
+ } else {
#ifdef AFS_LINUX20_ENV
- /* So Linux inode cache is up to date. */
- code = afs_VerifyVCache(tvc, &treq);
+ /* So Linux inode cache is up to date. */
+ code = afs_VerifyVCache(tvc, &treq);
#else
- return 0; /* can't have been any errors if hit and !code */
+ afs_PutFakeStat(&fakestate);
+ return 0; /* can't have been any errors if hit and !code */
#endif
- }
+ }
}
- code = afs_CheckCode(code, &treq, 19);
+ if (bulkcode)
+ code = bulkcode;
+ else
+ code = afs_CheckCode(code, &treq, 19);
if (code) {
- /* If there is an error, make sure *avcp is null.
- * Alphas panic otherwise - defect 10719.
- */
- *avcp = (struct vcache *)0;
+ /* If there is an error, make sure *avcp is null.
+ * Alphas panic otherwise - defect 10719.
+ */
+ *avcp = NULL;
}
+ afs_PutFakeStat(&fakestate);
return code;
}
git://git.openafs.org / openafs.git / blobdiff