* afs_lookup
* EvalMountPoint
* afs_DoBulkStat
- *
- * Locals:
- * afs_strcat
- * AFS_EQ_ATSYS (macro)
- * afs_index
*/
#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"
-
-
-/**
- * A few definitions. This is until we have a proper header file
- * which has prototypes for all functions
- */
+#include "afs/param.h"
-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
+#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"
+#include "afs/afs_dynroot.h"
+extern struct vcache *afs_globalVp;
+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 */
* 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(register char *s1, register char *s2)
-{
- register char *os1;
-
- AFS_STATCNT(strcat);
- os1 = s1;
- while (*s1++)
- ;
- --s1;
- while ((*s1++ = *s2++))
- ;
- return (os1);
-}
-
-
-char *afs_index(register char *a, register char c)
-{
- register char tc;
- AFS_STATCNT(afs_index);
- while ((tc = *a)) {
- if (tc == c) return a;
- else a++;
- }
- return NULL;
-}
-
/* call under write lock, evaluate mvid field from a mt pt.
* 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
*
* 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, struct vrequest *areq,
+ afs_uint32 *acellidxp, afs_uint32 *avolnump,
+ afs_uint32 *avnoidp, afs_uint32 *auniqp)
{
- afs_int32 code;
struct volume *tvp = 0;
struct VenusFid tfid;
struct cell *tcell;
- char *cpos, *volnamep;
- char type, *buf;
- afs_int32 prefetchRO; /* 1=>No 2=>Yes */
- afs_int32 mtptCell, assocCell, hac=0;
- afs_int32 samecell, roname, len;
-
- 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_index(&avc->linkData[1], ':'); /* if cell name present */
+ char *cpos, *volnamep = NULL;
+ char *buf, *endptr;
+ afs_int32 prefetch; /* 1=>None 2=>RO 3=>BK */
+ afs_int32 mtptCell, assocCell = 0, hac = 0;
+ afs_int32 samecell, roname, len;
+ afs_uint32 volid = 0, cellidx, vnoid = 0, uniq = 0;
+
+ /* Start by figuring out and finding the cell */
+ cpos = afs_strchr(data, ':'); /* if cell name present */
if (cpos) {
- volnamep = cpos+1;
- *cpos = 0;
- tcell = afs_GetCellByName(&avc->linkData[1], READ_LOCK);
- *cpos = ':';
+ afs_uint32 mtptCellnum;
+ volnamep = cpos + 1;
+ *cpos = 0;
+ if ((afs_strtoi_r(data, &endptr, &mtptCellnum) == 0) &&
+ (endptr == cpos)) {
+ tcell = afs_GetCell(mtptCellnum, READ_LOCK);
+ } else {
+ tcell = afs_GetCellByName(data, READ_LOCK);
+ }
+ *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);
+ /* No cellname or cellnum; return ENODEV */
+ return ENODEV;
+ }
+ if (!tcell) {
+ /* no cell found; return ENODEV */
+ return ENODEV;
}
- if (!tcell) return ENODEV;
- mtptCell = tcell->cellNum; /* The cell for the mountpoint */
+ cellidx = tcell->cellIndex;
+ mtptCell = tcell->cellNum; /* The cell for the mountpoint */
if (tcell->lcellp) {
- hac = 1; /* has associated cell */
- assocCell = tcell->lcellp->cellNum; /* The associated cell */
+ hac = 1; /* has associated cell */
+ assocCell = tcell->lcellp->cellNum; /* The associated cell */
+ }
+ afs_PutCell(tcell, READ_LOCK);
+
+ /* If there's nothing to look up, we can't proceed */
+ if (!*volnamep)
+ return ENODEV;
+
+ /* cell found. figure out volume */
+ cpos = afs_strchr(volnamep, ':');
+ if (cpos)
+ *cpos = 0;
+
+ /* Look for an all-numeric volume ID */
+ if ((afs_strtoi_r(volnamep, &endptr, &volid) == 0) &&
+ ((endptr == cpos) || (!*endptr)))
+ {
+ /* Ok. Is there a vnode and uniq? */
+ if (cpos) {
+ char *vnodep = (char *)(cpos + 1);
+ char *uniqp = NULL;
+ if ((!*vnodep) /* no vnode after colon */
+ || !(uniqp = afs_strchr(vnodep, ':')) /* no colon for uniq */
+ || (!*(++uniqp)) /* no uniq after colon */
+ || (afs_strtoi_r(vnodep, &endptr, &vnoid) != 0) /* bad vno */
+ || (*endptr != ':') /* bad vnode field */
+ || (afs_strtoi_r(uniqp, &endptr, &uniq) != 0) /* bad uniq */
+ || (*endptr)) /* anything after uniq */
+ {
+ *cpos = ':';
+ /* sorry. vnode and uniq, or nothing */
+ return ENODEV;
+ }
+ }
+ } else
+ volid = 0;
+
+ /*
+ * If the volume ID was all-numeric, and they didn't ask for a
+ * 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 (volid && !avolpp) {
+ if (cpos)
+ *cpos = ':';
+ goto done;
+ }
+
+ /*
+ * 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 (volid && type == '%') {
+ tfid.Fid.Volume = volid; /* remember BK volume */
+ tfid.Cell = mtptCell;
+ tvp = afs_GetVolume(&tfid, areq, WRITE_LOCK); /* get the new one */
+ if (cpos) /* one way or another we're done */
+ *cpos = ':';
+ if (!tvp)
+ return ENODEV; /* afs_GetVolume failed; return ENODEV */
+ goto done;
}
- 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 = (cellnum == mtptCell) || (hac && (cellnum == 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 && (states & CBackup))
+ prefetch = 3; /* Prefetch the BK */
+ else if (!samecell || (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).
+ * Set up to use volname first.
*/
- 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)) {
- buf = (char *)osi_AllocSmallSpace(strlen(volnamep)+10);
+ if (!tvp && (prefetch == 2) && len < AFS_SMALLOCSIZ - 10) {
+ buf = (char *)osi_AllocSmallSpace(len + 10);
strcpy(buf, volnamep);
afs_strcat(buf, ".readonly");
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 */
+ /* done with volname */
+ if (cpos)
+ *cpos = ':';
+ if (!tvp)
+ return ENODEV; /* Couldn't find the volume */
+ else
+ volid = tvp->volume;
/* Don't cross mountpoint from a BK to a BK volume */
- if ((avc->states & CBackup) && (tvp->states & VBackup)) {
+ if ((states & CBackup) && (tvp->states & VBackup)) {
afs_PutVolume(tvp, WRITE_LOCK);
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 */
}
+done:
+ if (acellidxp)
+ *acellidxp = cellidx;
+ if (avolnump)
+ *avolnump = volid;
+ if (avnoidp)
+ *avnoidp = vnoid;
+ if (auniqp)
+ *auniqp = uniq;
+ if (avolpp)
+ *avolpp = tvp;
+ else if (tvp)
+ afs_PutVolume(tvp, WRITE_LOCK);
+ return 0;
+}
+
+int
+EvalMountPoint(struct vcache *avc, struct vcache *advc,
+ struct volume **avolpp, struct vrequest *areq)
+{
+ afs_int32 code;
+ afs_uint32 avnoid, auniq;
+
+ 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, &auniq);
+ if (code) return code;
+
+ if (!avnoid)
+ avnoid = 1;
+
+ if (!auniq)
+ auniq = 1;
+
if (avc->mvid == 0)
- avc->mvid = (struct VenusFid *) osi_AllocSmallSpace(sizeof(struct VenusFid));
- avc->mvid->Cell = tvp->cell;
- avc->mvid->Fid.Volume = tvp->volume;
- avc->mvid->Fid.Vnode = 1;
- avc->mvid->Fid.Unique = 1;
- avc->states |= CMValid;
+ avc->mvid =
+ (struct VenusFid *)osi_AllocSmallSpace(sizeof(struct VenusFid));
+ avc->mvid->Cell = (*avolpp)->cell;
+ avc->mvid->Fid.Volume = (*avolpp)->volume;
+ avc->mvid->Fid.Vnode = avnoid;
+ avc->mvid->Fid.Unique = auniq;
+ 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 */
- if (advc) tvp->dotdot = advc->fid;
+ (*avolpp)->mtpoint = avc->f.fid; /* setup back pointer to mtpoint */
+
+ if (advc)
+ (*avolpp)->dotdot = advc->f.fid;
- *avolpp = tvp;
return 0;
}
* without calling afs_EvalFakeStat is legal, as long as this
* function is called.
*/
-void afs_InitFakeStat(struct afs_fakestat_state *state)
+void
+afs_InitFakeStat(struct afs_fakestat_state *state)
{
if (!afs_fakestat_enable)
return;
*
* 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)
+static 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;
if (tvc->mvstat != 1)
return 0;
- /* Is the call to VerifyVCache really necessary? */
- code = afs_VerifyVCache(tvc, areq);
- if (code)
- goto done;
if (canblock) {
+ /* Is the call to VerifyVCache really necessary? */
+ code = afs_VerifyVCache(tvc, areq);
+ if (code)
+ goto done;
+
ObtainWriteLock(&tvc->lock, 599);
code = EvalMountPoint(tvc, NULL, &tvolp, areq);
ReleaseWriteLock(&tvc->lock);
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;
do {
retry = 0;
ObtainWriteLock(&afs_xvcache, 597);
- root_vp = afs_FindVCache(tvc->mvid, &retry, 0);
+ root_vp = afs_FindVCache(tvc->mvid, &retry, IS_WLOCK);
if (root_vp && retry) {
ReleaseWriteLock(&afs_xvcache);
afs_PutVCache(root_vp);
code = canblock ? ENOENT : 0;
goto done;
}
- if (tvolp) {
+#ifdef AFS_DARWIN80_ENV
+ root_vp->f.m.Type = VDIR;
+ AFS_GUNLOCK();
+ code = afs_darwin_finalizevnode(root_vp, NULL, NULL, 0, 0);
+ AFS_GLOCK();
+ if (code) goto done;
+ vnode_ref(AFSTOV(root_vp));
+#endif
+ if (tvolp && !afs_InReadDir(root_vp)) {
/* Is this always kosher? Perhaps we should instead use
* NBObtainWriteLock to avoid potential deadlock.
*/
code = canblock ? ENOENT : 0;
}
-done:
+ done:
if (tvolp)
afs_PutVolume(tvolp, WRITE_LOCK);
return code;
*/
int
afs_EvalFakeStat(struct vcache **avcp, struct afs_fakestat_state *state,
- struct vrequest *areq)
+ struct vrequest *areq)
{
return afs_EvalFakeStat_int(avcp, state, areq, 1);
}
* 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)
+int
+afs_TryEvalFakeStat(struct vcache **avcp, struct afs_fakestat_state *state,
+ struct vrequest *areq)
{
return afs_EvalFakeStat_int(avcp, state, areq, 0);
}
* 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)
+void
+afs_PutFakeStat(struct afs_fakestat_state *state)
{
if (!afs_fakestat_enable)
return;
afs_PutVCache(state->root_vp);
state->valid = 0;
}
-
-int afs_ENameOK(register char *aname)
+
+int
+afs_ENameOK(char *aname)
{
- register int tlen;
+ 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;
}
-int afs_getsysname(register struct vrequest *areq, register struct vcache *adp,
- register char *bufp)
+static int
+afs_getsysname(struct vrequest *areq, struct vcache *adp,
+ char *bufp, int *num, char **sysnamelist[])
{
- register struct unixuser *au;
- register afs_int32 error;
+ struct unixuser *au;
+ 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, NULL, 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->f.fid.Cell, READ_LOCK);
+ if (au->exporter) {
+ error = EXP_SYSNAME(au->exporter, (char *)0, sysnamelist, num, 0);
+ if (error) {
+ strcpy(bufp, "@sys");
+ afs_PutUser(au, READ_LOCK);
+ return -1;
+ } else {
+ strcpy(bufp, (*sysnamelist)[0]);
+ }
+ } else
+ strcpy(bufp, afs_sysname);
+ afs_PutUser(au, READ_LOCK);
}
+ return 0;
}
-void Check_AtSys(register struct vcache *avc, const char *aname,
- struct sysname_info *state, struct vrequest *areq)
+void
+Check_AtSys(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->name = (char *)osi_AllocLargeSpace(MAXSYSNAME);
state->allocked = 1;
- state->index = afs_getsysname(areq, avc, state->name);
+ state->index =
+ afs_getsysname(areq, avc, state->name, &num, sysnamelist);
} else {
state->offset = -1;
state->allocked = 0;
state->index = 0;
- state->name = aname;
+ state->name = (char *)aname;
}
}
-int Next_AtSys(register struct vcache *avc, struct vrequest *areq,
- struct sysname_info *state)
+int
+Next_AtSys(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[(int)state->index])
- return 0; /* end of list */
- strcpy(state->name+state->offset, afs_sysnamelist[(int)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) {
+ 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 {
+ struct unixuser *au;
+ afs_int32 error;
+
+ *sysnamelist = afs_sysnamelist;
+
+ if (afs_nfsexporter) {
+ au = afs_GetUser(areq->uid, avc->f.fid.Cell, READ_LOCK);
+ if (au->exporter) {
+ error =
+ EXP_SYSNAME(au->exporter, (char *)0, sysnamelist, &num, 0);
+ if (error) {
+ afs_PutUser(au, READ_LOCK);
+ return 0;
+ }
+ }
+ afs_PutUser(au, READ_LOCK);
+ }
+ 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
+static int
+afs_CheckBulkStatus(struct afs_conn *tc, int nFids, AFSBulkStats *statParm,
+ AFSCBs *cbParm)
+{
+ int i;
+ int code;
+
+ if (statParm->AFSBulkStats_len != nFids || cbParm->AFSCBs_len != nFids) {
+ return VBUSY;
+ }
+ for (i = 0; i < nFids; i++) {
+ if (statParm->AFSBulkStats_val[i].errorCode) {
+ continue;
+ }
+ code = afs_CheckFetchStatus(tc, &statParm->AFSBulkStats_val[i]);
+ if (code) {
+ return code;
+ }
+ }
+ return 0;
+}
+
+extern int BlobScan(struct dcache * afile, afs_int32 ablob);
/* called with an unlocked directory and directory cookie. Areqp
* describes who is making the call.
*/
static struct vcache *BStvc = NULL;
-int afs_DoBulkStat(struct vcache *adp, long dirCookie, struct vrequest *areqp)
+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 */
+#ifdef AFS_DARWIN80_ENV
+ int npasses = 0;
+ struct vnode *lruvp;
+#endif
struct vcache *lruvcp; /* vcache ptr of our goal pos in LRU queue */
struct dcache *dcp; /* chunk containing the dir block */
- char *statMemp; /* status memory block */
- char *cbfMemp; /* callback and fid memory block */
afs_size_t temp; /* temp for holding chunk length, &c. */
struct AFSFid *fidsp; /* file IDs were collecting */
struct AFSCallBack *cbsp; /* call back pointers */
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 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,
* for callback expiration base
*/
- afs_size_t statSeqNo; /* Valued of file size to detect races */
+ int ftype[4] = {VNON, VREG, VDIR, VLNK}; /* verify type is as expected */
+ afs_size_t statSeqNo = 0; /* Valued of file size to detect races */
int code; /* error code */
long newIndex; /* new index in the dir */
+ struct DirBuffer entry; /* Buffer for dir manipulation */
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 VenusFid dotdot;
- int flagIndex; /* First file with bulk fetch flag set */
- int inlinebulk=0; /* Did we use InlineBulk RPC or not? */
- XSTATS_DECLS
+ struct volume *volp = 0; /* volume ptr */
+ struct VenusFid dotdot = {0, {0, 0, 0}};
+ int flagIndex = 0; /* First file with bulk fetch flag set */
+ struct rx_connection *rxconn;
+ XSTATS_DECLS;
+ dotdot.Cell = 0;
+ dotdot.Fid.Unique = 0;
+ dotdot.Fid.Vnode = 0;
/* 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
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)));
- fidsp = (AFSFid *) cbfMemp;
- cbsp = (AFSCallBack *) (cbfMemp + nentries * sizeof(AFSFid));
+ statsp = (AFSFetchStatus *)
+ osi_Alloc(AFSCBMAX * sizeof(AFSFetchStatus));
+ fidsp = (AFSFid *) osi_AllocLargeSpace(nentries * sizeof(AFSFid));
+ cbsp = (AFSCallBack *)
+ osi_Alloc(AFSCBMAX * sizeof(AFSCallBack));
/* next, we must iterate over the directory, starting from the specified
* cookie offset (dirCookie), and counting out nentries file entries.
* 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, (afs_size_t) 0, areqp, &temp, &temp, 1);
if (!dcp) {
code = ENOENT;
- goto done;
+ goto done2;
}
/* lock the directory cache entry */
* 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)) {
- afs_Trace4(afs_iclSetp, CM_TRACE_DCACHEWAIT,
- ICL_TYPE_STRING, __FILE__,
- ICL_TYPE_INT32, __LINE__,
- ICL_TYPE_POINTER, dcp,
- ICL_TYPE_INT32, dcp->dflags);
+ && 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);
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)) {
+ if (!(adp->f.states & CStatd)
+ || !hsame(adp->f.m.DataVersion, dcp->f.versionNo)) {
ReleaseReadLock(&dcp->lock);
ReleaseReadLock(&adp->lock);
afs_PutDCache(dcp);
* and it is safe to set the status information for this file.
*/
statSeqNo = bulkStatCounter++;
+ /* ensure against wrapping */
+ if (statSeqNo == 0)
+ statSeqNo = bulkStatCounter++;
/* 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;
+ code = afs_dir_GetBlob(dcp, newIndex, &entry);
+ if (code)
+ break;
+ dirEntryp = (struct DirEntry *)entry.data;
/* dont copy more than we have room for */
if (fidIndex >= nentries) {
- DRelease((struct buffer *) dirEntryp, 0);
- break;
+ DRelease(&entry, 0);
+ break;
}
/* now, if the dir entry looks good, copy it out to our list. Vnode
* 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 {
- retry = 0;
- ObtainWriteLock(&afs_xvcache, 130);
- tvcp = afs_FindVCache(&tfid, &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, IS_WLOCK /* 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);
- ObtainWriteLock(&tvcp->lock, 505);
- ReleaseWriteLock(&afs_xvcache);
- afs_RemoveVCB(&tfid);
- ReleaseWriteLock(&tvcp->lock);
+ if (!tvcp) { /* otherwise, create manually */
+ tvcp = afs_NewBulkVCache(&tfid, hostp, statSeqNo);
+ if (tvcp)
+ {
+ ObtainWriteLock(&tvcp->lock, 505);
+#ifdef AFS_DARWIN80_ENV
+ /* use even/odd hack to guess file versus dir.
+ let links be reaped. oh well. */
+ if (dirEntryp->fid.vnode & 1)
+ tvcp->f.m.Type = VDIR;
+ else
+ tvcp->f.m.Type = VREG;
+ /* finalize to a best guess */
+ afs_darwin_finalizevnode(tvcp, VTOAFS(adp), NULL, 0, 1);
+ /* re-acquire usecount that finalizevnode disposed of */
+ vnode_ref(AFSTOV(tvcp));
+#endif
+ ReleaseWriteLock(&afs_xvcache);
+ afs_RemoveVCB(&tfid);
+ ReleaseWriteLock(&tvcp->lock);
+ } else {
+ ReleaseWriteLock(&afs_xvcache);
+ }
} else {
- ReleaseWriteLock(&afs_xvcache);
+ ReleaseWriteLock(&afs_xvcache);
}
if (!tvcp)
- goto done; /* can't happen at present, more's the pity */
+ {
+ DRelease(&entry, 0);
+ ReleaseReadLock(&dcp->lock);
+ ReleaseReadLock(&adp->lock);
+ afs_PutDCache(dcp);
+ goto done; /* can happen if afs_NewVCache fails */
+ }
/* 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->f.states & CStatd)
+ && (!((tvcp->f.states & CBulkFetching) &&
+ (tvcp->f.m.Length != statSeqNo)))
+ && (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->f.states & CStatd)
+ && (!((tvcp->f.states & CBulkFetching) &&
+ (tvcp->f.m.Length != statSeqNo)))
+ && (tvcp->execsOrWriters <= 0)
+ && !afs_DirtyPages(tvcp))
#endif
{
* CBulkFetching state bit and the value in the file size.
* It is safe to set the status only if the CBulkFetching
* flag is still set and the value in the file size does
- * not change.
+ * not change. NewBulkVCache sets us up for the new ones.
+ * Set up the rest here.
*
* Don't fetch status for dirty files. We need to
* preserve the value of the file size. We could
* flush the pages, but it wouldn't be worthwhile.
*/
- memcpy((char *)(fidsp+fidIndex), (char *) &tfid.Fid, sizeof(*fidsp));
- tvcp->states |= CBulkFetching;
- tvcp->m.Length = statSeqNo;
+ if (!(tvcp->f.states & CBulkFetching)) {
+ tvcp->f.states |= CBulkFetching;
+ tvcp->f.m.Length = statSeqNo;
+ }
+ memcpy((char *)(fidsp + fidIndex), (char *)&tfid.Fid,
+ sizeof(*fidsp));
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((struct buffer *) dirEntryp, 0);
- if (temp <= 0) break;
+ DRelease(&entry, 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);
afs_PutDCache(dcp);
/* dont make a null call */
- if (fidIndex == 0) goto done;
+ if (fidIndex == 0)
+ goto done;
do {
/* setup the RPC parm structures */
/* 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, &rxconn);
if (tcp) {
- hostp = tcp->srvr->server;
+ hostp = tcp->parent->srvr->server;
+
+ for (i = 0; i < fidIndex; i++) {
+ /* we must set tvcp->callback before the BulkStatus call, so
+ * we can detect concurrent InitCallBackState's */
+
+ 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 {
+ retry = 0;
+ ObtainReadLock(&afs_xvcache);
+ tvcp = afs_FindVCache(&afid, &retry, 0 /* !stats&!lru */);
+ ReleaseReadLock(&afs_xvcache);
+ } while (tvcp && retry);
+
+ if (!tvcp) {
+ continue;
+ }
+
+ if ((tvcp->f.states & CBulkFetching) &&
+ (tvcp->f.m.Length == statSeqNo)) {
+ tvcp->callback = hostp;
+ }
+
+ afs_PutVCache(tvcp);
+ tvcp = NULL;
+ }
+
XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_BULKSTATUS);
- RX_AFS_GUNLOCK();
- if (!(tcp->srvr->server->flags & SNO_INLINEBULK)) {
- code = RXAFS_InlineBulkStatus(tcp->id, &fidParm, &statParm,
- &cbParm, &volSync);
+ if (!(tcp->parent->srvr->server->flags & SNO_INLINEBULK)) {
+ RX_AFS_GUNLOCK();
+ code =
+ RXAFS_InlineBulkStatus(rxconn, &fidParm, &statParm,
+ &cbParm, &volSync);
+ RX_AFS_GLOCK();
if (code == RXGEN_OPCODE) {
- tcp->srvr->server->flags |= SNO_INLINEBULK;
- inlinebulk = 0;
- code = RXAFS_BulkStatus(tcp->id, &fidParm, &statParm,
- &cbParm, &volSync);
- } else
- inlinebulk=1;
+ tcp->parent->srvr->server->flags |= SNO_INLINEBULK;
+ RX_AFS_GUNLOCK();
+ code =
+ RXAFS_BulkStatus(rxconn, &fidParm, &statParm,
+ &cbParm, &volSync);
+ RX_AFS_GLOCK();
+ } else if (!code) {
+ /* The InlineBulkStatus call itself succeeded, but we
+ * may have failed to stat the first entry. Use the error
+ * from the first entry for processing. */
+ code = (&statsp[0])->errorCode;
+ }
} else {
- inlinebulk=0;
- code = RXAFS_BulkStatus(tcp->id, &fidParm, &statParm, &cbParm,
- &volSync);
+ RX_AFS_GUNLOCK();
+ code =
+ RXAFS_BulkStatus(rxconn, &fidParm, &statParm, &cbParm,
+ &volSync);
+ RX_AFS_GLOCK();
}
- RX_AFS_GLOCK();
XSTATS_END_TIME;
- }
- else code = -1;
- } while (afs_Analyze(tcp, code, &adp->fid, areqp,
- AFS_STATS_FS_RPCIDX_BULKSTATUS, SHARED_LOCK, NULL));
+
+ if (code == 0) {
+ code = afs_CheckBulkStatus(tcp, fidIndex, &statParm, &cbParm);
+ }
+ } else
+ code = -1;
+ } while (afs_Analyze
+ (tcp, rxconn, code, &adp->f.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;
- 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)
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);
+#ifdef AFS_DARWIN80_ENV
+ reskip2:
+#endif
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;
- else if (QNext(QPrev(tq)) != tq) {
- BStvc = QTOV(tq);
- refpanic ("BulkStat VLRU inconsistent");
+ for (tq = VLRU.next; tq != &VLRU; tq = QNext(tq)) {
+ if (--nskip <= 0) {
+#ifdef AFS_DARWIN80_ENV
+ if ((!(QTOV(tq)->f.states & CDeadVnode)&&!(QTOV(tq)->f.states & CVInit)))
+#endif
+ break;
+ }
+ if (QNext(QPrev(tq)) != tq) {
+ 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
* doesn't hurt nearly as much.
*/
retry = 0;
+#ifdef AFS_DARWIN80_ENV
+ if (((lruvcp->f.states & CDeadVnode)||(lruvcp->f.states & CVInit))) {
+ if (npasses == 0) {
+ nskip = 1;
+ npasses++;
+ goto reskip2;
+ } else
+ panic("Can't find non-dead vnode in VLRU\n");
+ }
+ lruvp = AFSTOV(lruvcp);
+ if (vnode_get(lruvp)) /* this bumps ref count */
+ retry = 1;
+ else if (vnode_ref(lruvp)) {
+ AFS_GUNLOCK();
+ /* AFSTOV(lruvcp) may be NULL */
+ vnode_put(lruvp);
+ AFS_GLOCK();
+ retry = 1;
+ }
+#else
osi_vnhold(lruvcp, &retry);
- ReleaseReadLock(&afs_xvcache); /* could be read lock */
+#endif
+ 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++) {
- if ((&statsp[i])->errorCode)
+ 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 {
- retry = 0;
- ObtainReadLock(&afs_xvcache);
- tvcp = afs_FindVCache(&afid, &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
* flag, then someone else has done something with this node,
* and we may not have the latest status information for this
- * file. Leave the entry alone.
+ * file. Leave the entry alone. There's also a file type
+ * change here, for OSX bulkstat support.
*/
- if (!(tvcp->states & CBulkFetching) || (tvcp->m.Length != statSeqNo)) {
+ if (!(tvcp->f.states & CBulkFetching)
+ || (tvcp->f.m.Length != statSeqNo)
+ || (ftype[(&statsp[i])->FileType] != vType(tvcp))) {
flagIndex++;
ReleaseWriteLock(&tvcp->lock);
afs_PutVCache(tvcp);
}
/* 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);
+#ifdef AFS_DARWIN80_ENV
+ if (((lruvcp->f.states & CDeadVnode)||(lruvcp->f.states & CVInit)))
+ panic("vlru control point went dead\n");
+#endif
+
+ ObtainWriteLock(&afs_xvcache, 132);
if ((VLRU.next->prev != &VLRU) || (VLRU.prev->next != &VLRU)) {
- refpanic ("Bulkstat VLRU inconsistent2");
+ 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 ((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 (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 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);
* 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
* 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;
- if (volStates & VBackup) tvcp->states |= CBackup;
- if (volStates & VForeign) tvcp->states |= CForeign;
+ if (volStates & VRO)
+ tvcp->f.states |= CRO;
+ if (volStates & VBackup)
+ tvcp->f.states |= CBackup;
+ if (volStates & VForeign)
+ 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->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->cbExpires = 3600 + startTime;
tvcp->callback = hostp;
- tvcp->states |= CStatd;
+ tvcp->f.states |= CStatd;
afs_QueueCallback(tvcp, CBHash(3600), volp);
- }
- else {
+ } else {
tvcp->callback = 0;
- tvcp->states &= ~(CStatd|CUnique);
+ tvcp->f.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->f.states & CForeign) || (vType(tvcp) == VDIR))
+ osi_dnlc_purgedp(tvcp); /* if it (could be) a directory */
}
+#ifdef AFS_DARWIN80_ENV
+ /* reclaim->FlushVCache will need xcbhash */
+ if (((tvcp->f.states & CDeadVnode)||(tvcp->f.states & CVInit))) {
+ ReleaseWriteLock(&afs_xcbhash);
+ /* passing in a parent hangs getting the vnode lock */
+ code = afs_darwin_finalizevnode(tvcp, NULL, NULL, 0, 1);
+ if (code) {
+ /* It's gonna get recycled - shouldn't happen */
+ tvcp->callback = 0;
+ tvcp->f.states &= ~(CStatd | CUnique);
+ afs_DequeueCallback(tvcp);
+ if ((tvcp->f.states & CForeign) || (vType(tvcp) == VDIR))
+ osi_dnlc_purgedp(tvcp); /* if it (could be) a directory */
+ } else
+ /* re-acquire the usecount that finalizevnode disposed of */
+ vnode_ref(AFSTOV(tvcp));
+ } else
+#endif
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 */
+#ifdef AFS_DARWIN80_ENV
+ if (((lruvcp->f.states & CDeadVnode)||(lruvcp->f.states & CVInit)))
+ panic("vlru control point went dead before put\n");
+ AFS_GUNLOCK();
+ vnode_put(lruvp);
+ vnode_rele(lruvp);
+ AFS_GLOCK();
+#else
afs_PutVCache(lruvcp);
+#endif
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;
+ for (i = flagIndex; i < fidIndex; i++) {
+ 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 {
- retry = 0;
- ObtainReadLock(&afs_xvcache);
- tvcp = afs_FindVCache(&afid, &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)
- && (tvcp->m.Length == statSeqNo)) {
- tvcp->states &= ~CBulkFetching;
- }
if (tvcp != NULL) {
- afs_PutVCache(tvcp);
+ if ((tvcp->f.states & CBulkFetching)
+ && (tvcp->f.m.Length == statSeqNo)) {
+ tvcp->f.states &= ~CBulkFetching;
+ }
+ 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;
- }
- osi_FreeLargeSpace(statMemp);
- osi_FreeLargeSpace(cbfMemp);
+
+ done2:
+ osi_FreeLargeSpace((char *)fidsp);
+ osi_Free((char *)statsp, AFSCBMAX * sizeof(AFSFetchStatus));
+ osi_Free((char *)cbsp, AFSCBMAX * sizeof(AFSCallBack));
return code;
}
/* was: (AFS_DEC_ENV) || defined(AFS_OSF30_ENV) || defined(AFS_NCR_ENV) */
+#ifdef AFS_DARWIN80_ENV
+int AFSDOBULK = 1;
+#else
static int AFSDOBULK = 1;
+#endif
-#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_inline int
+osi_lookup_isdot(const char *aname)
+{
+#ifdef AFS_SUN5_ENV
+ if (!aname[0]) {
+ /* in Solaris, we can get passed "" as a path component if we are the
+ * root directory, e.g. after a call to chroot. It is equivalent to
+ * looking up "." */
+ return 1;
+ }
+#endif /* AFS_SUN5_ENV */
+ if (aname[0] == '.' && !aname[1]) {
+ return 1;
+ }
+ return 0;
+}
+
+int
+#if 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, afs_ucred_t *acred)
+#elif defined(UKERNEL)
+afs_lookup(OSI_VC_DECL(adp), char *aname, struct vcache **avcp, afs_ucred_t *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, afs_ucred_t *acred)
#endif
+{
struct vrequest treq;
char *tname = NULL;
- register struct vcache *tvc=0;
- register afs_int32 code;
- register afs_int32 bulkcode = 0;
+ struct vcache *tvc = 0;
+ afs_int32 code;
+ 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?*/
- 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);
afs_InitFakeStat(&fakestate);
+ AFS_DISCON_LOCK();
+
if ((code = afs_InitReq(&treq, acred)))
goto done;
-#ifdef AFS_OSF_ENV
- ndp->ni_dvp = AFSTOV(adp);
- memcpy(aname, ndp->ni_ptr, ndp->ni_namelen);
- aname[ndp->ni_namelen] = '\0';
-#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
if (strcmp(aname, "Contents") == 0)
tryEvalOnly = 1;
}
+ if (afs_fakestat_enable && adp->mvstat == 2) {
+ if (strncmp(aname, "._", 2) == 0)
+ tryEvalOnly = 1;
+ }
#endif
if (tryEvalOnly)
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)
goto done;
- *avcp = NULL; /* Since some callers don't initialize it */
+ *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 = NULL; /* Since some callers don't initialize it */
+ *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;
}
- }
- else code = 0;
+ } 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) {
-#ifdef AFS_OSF_ENV
- extern struct vcache *afs_globalVp;
- if (adp == afs_globalVp) {
- struct vnode *rvp = AFSTOV(adp);
-/*
- ndp->ni_vp = rvp->v_vfsp->vfs_vnodecovered;
- ndp->ni_dvp = ndp->ni_vp;
- VN_HOLD(*avcp);
-*/
- code = ENODEV;
- goto done;
- }
-#endif
+ if (adp->mvid == (struct VenusFid *)0 || adp->mvid->Fid.Volume == 0) {
code = ENODEV;
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);
+ 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 && !VREFCOUNT(tvc)) {
+ if (tvc && !VREFCOUNT_GT(tvc, 0)) {
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 = NULL;
- 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. */
- if (!afs_AccessOK(adp, PRSFS_LOOKUP, &treq, CHECK_MODE_BITS))
+ * stat files, but not to stat subdirectories. */
+ if (!afs_AccessOK(adp, PRSFS_READ, &treq, CHECK_MODE_BITS))
no_read_access = 1;
/* special case lookup of ".". Can we check for it sooner in this code,
* 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 (osi_lookup_isdot(aname)) { /* special case */
+ ObtainReadLock(&afs_xvcache);
osi_vnhold(adp, 0);
- ReleaseReadLock(&afs_xvcache);
+ ReleaseReadLock(&afs_xvcache);
+#ifdef AFS_DARWIN80_ENV
+ vnode_get(AFSTOV(adp));
+#endif
code = 0;
*avcp = tvc = adp;
hit = 1;
- if (adp && !VREFCOUNT(adp)) {
+ if (adp && !VREFCOUNT_GT(adp, 0)) {
osi_Panic("TT2");
}
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, uniq;
+
+ code = EvalMountData('%', aname, 0, 0, NULL, &treq, &cellidx, &volid, &vnoid, &uniq);
+ if (code)
+ goto done;
+ /* If a vnode was returned, it's not a real mount point */
+ if (vnoid > 1) {
+ struct cell *tcell = afs_GetCellByIndex(cellidx, READ_LOCK);
+ tfid.Cell = tcell->cellNum;
+ afs_PutCell(tcell, READ_LOCK);
+ tfid.Fid.Vnode = vnoid;
+ tfid.Fid.Volume = volid;
+ tfid.Fid.Unique = uniq;
+ } else {
+ afs_GetDynrootMountFid(&tfid);
+ tfid.Fid.Vnode = VNUM_FROM_TYPEID(VN_TYPE_MOUNT, cellidx << 2);
+ tfid.Fid.Unique = volid;
+ }
+ *avcp = tvc = afs_GetVCache(&tfid, &treq, NULL, NULL);
+ code = (tvc ? 0 : ENOENT);
+ hit = 1;
+ goto done;
+ }
+
+#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;
/* 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 && vType(tvc) != VLNK) {
/* need read access on dir to stat non-directory / non-link */
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_size_t dirOffset, dirLen;
- ino_t theDir;
- 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;
- }
+ { /* sub-block just to reduce stack usage */
+ struct dcache *tdc;
+ afs_size_t dirOffset, dirLen;
+ struct VenusFid tfid;
- /* now we will just call dir package with appropriate inode.
- Dirs are always fetched in their entirety for now */
- ObtainReadLock(&adp->lock);
- ObtainReadLock(&tdc->lock);
+ /* now we have to lookup the next fid */
+ 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;
+ 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->dflags & DFFetching)
- && hsame(adp->m.DataVersion, tdc->f.versionNo)) {
- ReleaseReadLock(&tdc->lock);
- 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);
ObtainReadLock(&tdc->lock);
- }
- if (!(adp->states & CStatd)
- || !hsame(adp->m.DataVersion, tdc->f.versionNo)) {
- ReleaseReadLock(&tdc->lock);
- ReleaseReadLock(&adp->lock);
- afs_PutDCache(tdc);
- goto redo;
- }
- /* 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 */
+ /*
+ * 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
+ *
+ * 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.
+ */
+ 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;
+ }
+ }
- /* 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);
+ /* 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 */
- /* 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;
+ /* 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);
- ReleaseReadLock(&tdc->lock);
- afs_PutDCache(tdc);
+ /* 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;
- 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);
- }
+ ReleaseReadLock(&tdc->lock);
+ if (!afs_InReadDir(adp))
+ afs_PutDCache(tdc);
+ if (code == ENOENT && afs_IsDynroot(adp) && dynrootRetry && !tryEvalOnly) {
+ struct cell *tc;
+ char *cn = (tname[0] == '.') ? tname + 1 : tname;
+ ReleaseReadLock(&adp->lock);
+ /* confirm it's not just hushed */
+ tc = afs_GetCellByName(cn, WRITE_LOCK);
+ if (tc) {
+ if (tc->states & CHush) {
+ tc->states &= ~CHush;
+ ReleaseWriteLock(&tc->lock);
+ afs_DynrootInvalidate();
+ goto redo;
+ }
+ ReleaseWriteLock(&tc->lock);
+ }
+ /* Allow a second dynroot retry if the cell was hushed before */
+ 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->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);
- 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_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.
+ /* 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, &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);
+ 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.
+ */
+ do {
+ retry = 0;
+ ObtainReadLock(&afs_xvcache);
+ tvc = afs_FindVCache(&tfid, &retry, 0 /* !stats,!lru */ );
+ ReleaseReadLock(&afs_xvcache);
+ } while (tvc && retry);
+
+ 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->f.states & CStatd)) {
+ afs_PutVCache(tvc);
+ tvc = NULL;
+ }
+ } else {
tvc = NULL;
+ bulkcode = 0;
}
- } else {
- tvc = NULL;
- bulkcode = 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 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 */
+ /* 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->f.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) {
- 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);
ConvertSToRLock(&tvc->lock);
code = 0;
}
- if (!code && !strchr(tvc->linkData, ':'))
+ if (!code && !afs_strchr(tvc->linkData, ':'))
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 */
-#endif /* UKERNEL && AFS_WEB_ENHANCEMENTS */
- if (tvc->mvstat == 1 && force_eval) {
- /* a mt point, possibly unevaluated */
- struct volume *tvolp;
-
- ObtainWriteLock(&tvc->lock,133);
- code = EvalMountPoint(tvc, adp, &tvolp, &treq);
- ReleaseWriteLock(&tvc->lock);
+#if defined(UKERNEL)
+ if (!(flags & AFS_LOOKUP_NOEVAL))
+ /* don't eval mount points */
+#endif /* UKERNEL */
+ if (tvc->mvstat == 1 && force_eval) {
+ /* a mt point, possibly unevaluated */
+ struct volume *tvolp;
- if (code) {
- afs_PutVCache(tvc);
- 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, NULL, tvolp);
- } else {
- tvc = afs_GetVCache(tvc->mvid, &treq, NULL, NULL);
+ if (code) {
+ afs_PutVCache(tvc);
+ if (tvolp)
+ afs_PutVolume(tvolp, WRITE_LOCK);
+ goto done;
}
- afs_PutVCache(uvc); /* 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->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->f.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 == 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;
- }
- }
*avcp = tvc;
- if (tvc && !VREFCOUNT(tvc)) {
+ if (tvc && !VREFCOUNT_GT(tvc, 0)) {
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. */
- 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);
+ * be located (a Multics "connection failure"). If the volume is
+ * read-only, we try flushing this entry from the cache and trying
+ * again. */
+ 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 {
+ code = ENETDOWN;
}
- 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);
- *avcp = NULL;
- afs_PutFakeStat(&fakestate);
- return afs_CheckCode(EISDIR, &treq, 18);
- }
- }
-#endif /* AFS_OSF_ENV */
if (afs_mariner)
- 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. */
-#endif /* UKERNEL && AFS_WEB_ENHANCEMENTS */
- if (!hit) {
- osi_dnlc_enter (adp, aname, tvc, &versionNo);
- }
- else {
+ afs_AddMarinerName(aname, tvc);
+
+#if defined(UKERNEL)
+ 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 */
+ if (!hit && force_eval) {
+ 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
- afs_PutFakeStat(&fakestate);
- return 0; /* can't have been any errors if hit and !code */
+ afs_PutFakeStat(&fakestate);
+ AFS_DISCON_UNLOCK();
+ return 0; /* can't have been any errors if hit and !code */
#endif
+ }
+#if defined(UKERNEL)
}
+#endif
}
- if (bulkcode) code = bulkcode; else
+ if (bulkcode)
+ code = bulkcode;
+
code = afs_CheckCode(code, &treq, 19);
if (code) {
- /* If there is an error, make sure *avcp is null.
- * Alphas panic otherwise - defect 10719.
- */
- *avcp = NULL;
+ /* If there is an error, make sure *avcp is null.
+ * Alphas panic otherwise - defect 10719.
+ */
+ *avcp = NULL;
}
afs_PutFakeStat(&fakestate);
+ AFS_DISCON_UNLOCK();
return code;
}
git://git.openafs.org / openafs.git / blobdiff