/* Called to initialize this reference kind metatable */
static void register_members(lua_State *l)
{
metatable_bind<const char*>(l, l_classname_field, l_data_type<const char*>(TNAME(C)));
meta_bind_func(l, "__gc", destroy);
meta_bind_func(l, "__cpp_ref_count", _get_ref_count);
meta_bind_func(l, "__cpp_ownerref_count", _get_ownerref_count);
}
/* Copy reference */
l_ref(l_ref *r, lua_State *l, const char *classname = TNAME(C))
: _ref_base(*r), val(r->val), owner_ref(r->owner_ref), c_name(classname)
{
if (owner_ref)
owner_ref->retain();
_push_noretain(l);
}
afs_int32
readDbTape(struct butm_tapeInfo *tapeInfoPtr,
struct rstTapeInfo *rstTapeInfoPtr, int query)
{
afs_int32 code = 0;
int interactiveFlag;
afs_int32 taskId;
struct butm_tapeLabel oldTapeLabel;
char AFStapeName[BU_MAXTAPELEN], tapeName[BU_MAXTAPELEN];
struct tapeEntryList *endList;
int tapecount = 1;
struct budb_dumpEntry de;
struct budb_tapeEntry te;
taskId = rstTapeInfoPtr->taskId;
interactiveFlag = query;
/* construct the name of the tape */
sprintf(AFStapeName, "%s.%-d", DUMP_TAPE_NAME, rstTapeInfoPtr->tapeSeq);
strcpy(tapeName, AFStapeName);
/* Will prompt for the latest saved database tape, but will accept any one */
if (rstTapeInfoPtr->tapeSeq == 1) {
code = bcdb_FindLatestDump("", "", &de);
if (!code)
rstTapeInfoPtr->dumpid = de.id;
}
if (rstTapeInfoPtr->dumpid) {
code =
bcdb_FindTapeSeq(rstTapeInfoPtr->dumpid, rstTapeInfoPtr->tapeSeq,
&te);
if (!code)
strcpy(tapeName, te.name);
}
code = 0;
while (1) { /*w */
if (interactiveFlag) { /* need a tape to read */
code =
PromptForTape(RESTOREDBOPCODE, tapeName,
rstTapeInfoPtr->dumpid, taskId, tapecount);
if (code)
ERROR_EXIT(code);
}
interactiveFlag = 1;
tapecount++;
code = butm_Mount(tapeInfoPtr, tapeName);
if (code) {
TapeLog(0, taskId, code, tapeInfoPtr->error, "Can't open tape\n");
goto getNewTape;
}
code = butm_ReadLabel(tapeInfoPtr, &oldTapeLabel, 1); /* will rewind the tape */
if (code) {
TapeLog(0, taskId, code, tapeInfoPtr->error,
"Can't read tape label\n");
goto getNewTape;
}
/* Check for name of tape and matching dump id (if applicable). */
if ((strcmp(oldTapeLabel.AFSName, AFStapeName) != 0)
|| ((rstTapeInfoPtr->tapeSeq != 1)
&& (oldTapeLabel.dumpid != rstTapeInfoPtr->dumpid))) {
char expTape[BU_MAXTAPELEN + 32];
char gotTape[BU_MAXTAPELEN + 32];
TAPENAME(expTape, tapeName, rstTapeInfoPtr->dumpid);
TAPENAME(gotTape, oldTapeLabel.AFSName, oldTapeLabel.dumpid);
TLog(taskId, "Tape label expected %s, label seen %s\n", expTape,
gotTape);
goto getNewTape;
}
if (rstTapeInfoPtr->tapeSeq == 1) /* Remember this dumpId */
rstTapeInfoPtr->dumpid = oldTapeLabel.dumpid;
break;
getNewTape:
unmountTape(taskId, tapeInfoPtr);
} /*w */
/* Initialize a tapeEntry for later inclusion into the database */
listEntryPtr =
(struct tapeEntryList *)malloc(sizeof(struct tapeEntryList));
if (!listEntryPtr)
ERROR_EXIT(TC_NOMEMORY);
memset(listEntryPtr, 0, sizeof(struct tapeEntryList));
/* Fill in tape entry so we can save it later */
strcpy(tapeEntryPtr->name, TNAME(&oldTapeLabel));
tapeEntryPtr->dump = oldTapeLabel.dumpid;
tapeEntryPtr->flags = BUDB_TAPE_BEINGWRITTEN;
tapeEntryPtr->written = oldTapeLabel.creationTime;
tapeEntryPtr->expires = oldTapeLabel.expirationDate;
tapeEntryPtr->seq = extractTapeSeq(oldTapeLabel.AFSName);
tapeEntryPtr->useCount = oldTapeLabel.useCount;
tapeEntryPtr->useKBytes = 0;
tapeEntryPtr->labelpos = 0;
/* Thread onto end of single-linked list */
if (listEntryHead) {
endList = listEntryHead;
while (endList->next)
endList = endList->next;
endList->next = listEntryPtr;
} else
listEntryHead = listEntryPtr;
error_exit:
return (code);
}
/* GetDBTape
* Load a DB tape, read and over write its label.
* Leave the tape mounted.
*/
afs_int32
GetDBTape(afs_int32 taskId, Date expires, struct butm_tapeInfo *tapeInfoPtr,
afs_uint32 dumpid, afs_int32 sequence, int queryFlag,
int *wroteLabel)
{
afs_int32 code = 0;
int interactiveFlag;
char tapeName[BU_MAXTAPELEN];
char strlevel[5];
struct timeval tp;
struct timezone tzp;
afs_int32 curTime;
int tapecount = 1;
struct butm_tapeLabel oldTapeLabel, newLabel;
struct tapeEntryList *endList;
/* construct the name of the tape */
sprintf(tapeName, "%s.%-d", DUMP_TAPE_NAME, sequence);
interactiveFlag = queryFlag;
*wroteLabel = 0;
while (!*wroteLabel) { /*w */
if (interactiveFlag) { /* need a tape to write */
code =
PromptForTape(SAVEDBOPCODE, tapeName, dumpid, taskId,
tapecount);
if (code)
ERROR_EXIT(code);
}
interactiveFlag = 1;
tapecount++;
code = butm_Mount(tapeInfoPtr, tapeName);
if (code) {
TapeLog(0, taskId, code, tapeInfoPtr->error, "Can't open tape\n");
goto getNewTape;
}
memset(&oldTapeLabel, 0, sizeof(oldTapeLabel));
code = butm_ReadLabel(tapeInfoPtr, &oldTapeLabel, 1); /* rewind tape */
if (code) {
oldTapeLabel.useCount = 0; /* no label exists */
oldTapeLabel.structVersion = 0;
strcpy(oldTapeLabel.pName, "");
} else {
/* If tape has a name, it must be null or database tape name */
if (dump_namecheck && strcmp(oldTapeLabel.AFSName, "")
&& !databaseTape(oldTapeLabel.AFSName)) {
char gotName[BU_MAXTAPELEN + 32];
LABELNAME(gotName, &oldTapeLabel);
TLog(taskId,
"This tape %s must be a database tape or NULL tape\n",
gotName);
getNewTape:
unmountTape(taskId, tapeInfoPtr);
continue;
}
/* Do not overwrite a tape that belongs to this dump */
if (oldTapeLabel.dumpid && (oldTapeLabel.dumpid == dumpid)) {
ErrorLog(0, taskId, 0, 0,
"Can't overwrite tape containing the dump in progress\n");
goto getNewTape;
}
/* On first tape, the savedb has not started yet, so the database is not locked
* and we can therefore, access information from it. This is easier to do because
* database dumps don't have appended dumps (nor appended).
*/
if (sequence == 1) {
afs_uint32 dmp;
struct budb_dumpEntry de, de2;
/* Verify the tape has not expired
* Early database dumps don't have a dumpid
*/
if (!tapeExpired(&oldTapeLabel)) {
TLog(taskId, "This tape has not expired\n");
goto getNewTape;
}
/* Since the dumpset on this tape will be deleted from database, check if
* any of the dumps in this dumpset are most-recent-dumps.
*/
for (dmp = oldTapeLabel.dumpid; dmp; dmp = de.appendedDumpID) {
if (dmp == lastDump.id) {
memcpy(&de, &lastDump, sizeof(de));
memcpy(&de2, &lastDump, sizeof(de2));
} else {
code = bcdb_FindDumpByID(dmp, &de);
if (code)
break;
sprintf(strlevel, "%d", de.level);
code =
bcdb_FindLatestDump(de.volumeSetName, strlevel,
&de2);
if (code)
continue;
}
if (de.id == de2.id) {
if (strcmp(DUMP_TAPE_NAME, de2.name) == 0) {
ErrorLog(0, taskId, 0, 0,
"Warning: Overwriting most recent dump %s (DumpID %u)\n",
de.name, de.id);
} else {
ErrorLog(0, taskId, 0, 0,
"Warning: Overwriting most recent dump of the '%s' volumeset: %s (DumpID %u)\n",
de.volumeSetName, de.name, de.id);
}
}
}
}
/* Otherwise, the savedb is in progress and we can't
* access the database (it's locked). So we rely on the
* information available (and not the backup database).
*/
else {
/* Check the tape's expiration date. Use the expiration on the label */
gettimeofday(&tp, &tzp);
curTime = tp.tv_sec;
if (curTime < oldTapeLabel.expirationDate) {
TLog(taskId, "This tape has not expired\n");
goto getNewTape;
}
/* Check if this previous-dump of the dump-in-progress is on this tape */
if (oldTapeLabel.dumpid
&& (oldTapeLabel.dumpid == lastDump.id)) {
ErrorLog(0, taskId, 0, 0,
"Warning: Overwriting most recent dump %s (DumpID %u)\n",
lastDump.name, lastDump.id);
}
}
}
GetNewLabel(tapeInfoPtr, oldTapeLabel.pName, tapeName, &newLabel);
newLabel.expirationDate = expires;
newLabel.useCount = oldTapeLabel.useCount + 1;
newLabel.dumpid = dumpid;
newLabel.size = tapeInfoPtr->tapeSize;
code = butm_Create(tapeInfoPtr, &newLabel, 1); /* rewind tape */
if (code) {
TapeLog(0, taskId, code, tapeInfoPtr->error,
"Can't label tape\n");
goto getNewTape;
}
*wroteLabel = 1;
/* Initialize a tapeEntry for later inclusion into the database */
listEntryPtr =
(struct tapeEntryList *)malloc(sizeof(struct tapeEntryList));
if (!listEntryPtr)
ERROR_EXIT(TC_NOMEMORY);
memset(listEntryPtr, 0, sizeof(struct tapeEntryList));
/* Remember dumpid so we can delete it later */
if ((oldTapeLabel.structVersion >= TAPE_VERSION_3)
&& oldTapeLabel.dumpid)
listEntryPtr->oldDumpId = oldTapeLabel.dumpid;
/* Fill in tape entry so we can save it later */
strcpy(tapeEntryPtr->name, TNAME(&newLabel));
tapeEntryPtr->flags = BUDB_TAPE_BEINGWRITTEN;
tapeEntryPtr->written = newLabel.creationTime;
tapeEntryPtr->expires = expires;
tapeEntryPtr->seq = sequence;
tapeEntryPtr->useCount = oldTapeLabel.useCount + 1;
tapeEntryPtr->dump = dumpid;
tapeEntryPtr->useKBytes = 0;
tapeEntryPtr->labelpos = 0;
/* Thread onto end of single-linked list */
if (listEntryHead) {
endList = listEntryHead;
while (endList->next)
endList = endList->next;
endList->next = listEntryPtr;
} else
listEntryHead = listEntryPtr;
} /*w */
error_exit:
return (code);
}
static int
readDump(afs_uint32 taskId, struct butm_tapeInfo *tapeInfoPtr,
struct tapeScanInfo *scanInfoPtr)
{
int moreTapes = 1;
afs_int32 flags, seq;
afs_uint32 nbytes = 0;
int newDump = 1, newTape = 1;
afs_int32 tapePosition;
afs_int32 code = 0, tcode;
int badscan;
struct volumeHeader volHeader, volTrailer;
struct budb_tapeEntry tapeEntry;
struct budb_volumeEntry volEntry;
volEntry.dump = 0;
PrintDumpLabel(&scanInfoPtr->dumpLabel);
while (moreTapes) {
/* While there is a tape to read *//*t */
badscan = 0;
while (1) {
/* Read each volume on the tape *//*w */
moreTapes = -1;
tapePosition = tapeInfoPtr->position; /* remember position */
/*
* Skip the volume data
*/
tcode =
scanVolData(taskId, tapeInfoPtr,
scanInfoPtr->tapeLabel.structVersion, &volHeader,
&volTrailer, &nbytes);
if (tcode) {
badscan++;
if (tcode == TC_ABORTEDBYREQUEST) { /* Aborted */
ERROR_EXIT(tcode);
}
if (tcode == BUTM_EOD) {
moreTapes = 0; /* the end of the dump */
break;
}
/* Found a volume but it's incomplete. Skip over these */
if (volHeader.volumeID) {
TapeLog(0, taskId, tcode, 0,
"Warning: volume %s (%u) ignored. Incomplete\n",
volHeader.volumeName, volHeader.volumeID);
continue;
}
/* No volume was found. We may have hit the EOT or a
* bad-spot. Try to skip over this spot.
*/
if (badscan < 2) { /* allow 2 errors, then fail */
TapeLog(0, taskId, tcode, 0,
"Warning: Error in scanning tape - will try skipping volume\n");
continue;
}
if (scanInfoPtr->tapeLabel.structVersion >= TAPE_VERSION_4) {
TapeLog(0, taskId, tcode, 0,
"Warning: Error in scanning tape - end-of-tape inferred\n");
moreTapes = 1; /* then assume next tape */
} else {
ErrorLog(0, taskId, tcode, 0, "Error in scanning tape\n");
/* will ask if there is a next tape */
}
break;
}
PrintVolumeHeader(&volHeader);
/* If this is not the first volume fragment, make sure it follows
* the last volume fragment
*/
if (volEntry.dump) {
if ((volEntry.dump != volHeader.dumpID)
|| (volEntry.id != volHeader.volumeID)
|| (volEntry.seq != volHeader.frag - 2)
|| (strcmp(volEntry.name, volHeader.volumeName))) {
TLog(taskId,
"Warning: volume %s (%u) ignored. Incomplete - no last fragment\n",
volEntry.name, volEntry.id);
if (scanInfoPtr->addDbFlag) {
tcode = flushSavedEntries(DUMP_FAILED);
if (tcode)
ERROR_EXIT(tcode);
volEntry.dump = 0;
}
}
}
/* If this is the first volume fragment, make sure says so */
if (scanInfoPtr->addDbFlag && !volEntry.dump
&& (volHeader.frag != 1)) {
TLog(taskId,
"Warning: volume %s (%u) ignored. Incomplete - no first fragment\n",
volHeader.volumeName, volHeader.volumeID);
}
/* Check that this volume belongs to the dump we are scanning */
else if (scanInfoPtr->dumpLabel.dumpid
&& (volHeader.dumpID != scanInfoPtr->dumpLabel.dumpid)) {
TLog(taskId,
"Warning: volume %s (%u) ignored. Expected DumpId %u, got %u\n",
volHeader.volumeName, volHeader.volumeID,
scanInfoPtr->dumpLabel.dumpid, volHeader.dumpID);
}
/* Passed tests, Now add to the database (if dbadd flag is set) */
else if (scanInfoPtr->addDbFlag) {
/* Have enough information to create a dump entry */
if (newDump) {
tcode = RcreateDump(scanInfoPtr, &volHeader);
if (tcode) {
ErrorLog(0, taskId, tcode, 0,
"Can't add dump %u to database\n",
volHeader.dumpID);
ERROR_EXIT(tcode);
}
newDump = 0;
}
/* Have enough information to create a tape entry */
if (newTape) {
seq = extractTapeSeq(scanInfoPtr->tapeLabel.AFSName);
if (seq < 0)
ERROR_EXIT(TC_INTERNALERROR);
tcode =
useTape(&tapeEntry, volHeader.dumpID,
TNAME(&scanInfoPtr->tapeLabel), seq,
scanInfoPtr->tapeLabel.useCount,
scanInfoPtr->dumpLabel.creationTime,
scanInfoPtr->dumpLabel.expirationDate,
tapepos);
if (tcode) {
char gotName[BU_MAXTAPELEN + 32];
LABELNAME(gotName, &scanInfoPtr->tapeLabel);
ErrorLog(0, taskId, tcode, 0,
"Can't add tape %s for dump %u to database\n",
gotName, volHeader.dumpID);
ERROR_EXIT(tcode);
}
newTape = 0;
}
/* Create the volume entry */
flags = ((volHeader.frag == 1) ? BUDB_VOL_FIRSTFRAG : 0);
if (!volTrailer.contd)
flags |= BUDB_VOL_LASTFRAG;
tcode =
addVolume(&volEntry, volHeader.dumpID,
TNAME(&scanInfoPtr->tapeLabel),
volHeader.volumeName, volHeader.volumeID,
volHeader.cloneDate, tapePosition, nbytes,
(volHeader.frag - 1), flags);
if (tcode) {
ErrorLog(0, taskId, tcode, 0,
"Can't add volume %s (%u) for dump %u to database\n",
volHeader.volumeName, volHeader.volumeID,
volHeader.dumpID);
ERROR_EXIT(tcode);
}
}
if (volTrailer.contd) {
/* No need to read the EOD marker, we know there is a next tape */
moreTapes = 1;
break;
} else {
if (scanInfoPtr->addDbFlag) {
tcode = flushSavedEntries(DUMP_SUCCESS);
if (tcode)
ERROR_EXIT(tcode);
volEntry.dump = 0;
}
}
} /*w */
if (!newTape) {
if (scanInfoPtr->addDbFlag) {
tcode =
finishTape(&tapeEntry,
(tapeInfoPtr->kBytes +
(tapeInfoPtr->nBytes ? 1 : 0)));
if (tcode) {
char gotName[BU_MAXTAPELEN + 32];
LABELNAME(gotName, &scanInfoPtr->tapeLabel);
ErrorLog(0, taskId, tcode, 0,
"Can't mark tape %s 'completed' for dump %u in database\n",
gotName, tapeEntry.dump);
ERROR_EXIT(tcode);
}
}
}
/* Ask if there is another tape if we can't figure it out */
if (moreTapes == -1)
moreTapes = (queryoperator ? Ask("Are there more tapes") : 1);
/* Get the next tape label */
if (moreTapes) {
char *tapeName;
afs_int32 dumpid;
unmountTape(taskId, tapeInfoPtr);
tapeName = nextTapeLabel(scanInfoPtr->tapeLabel.AFSName);
dumpid = scanInfoPtr->tapeLabel.dumpid;
tcode =
getScanTape(taskId, tapeInfoPtr, tapeName, dumpid, 1,
&scanInfoPtr->tapeLabel);
if (tcode)
ERROR_EXIT(tcode);
newTape = 1;
}
} /*t */
if (!newDump) {
if (scanInfoPtr->addDbFlag) {
tcode = finishDump(&scanInfoPtr->dumpEntry);
if (tcode) {
ErrorLog(0, taskId, tcode, 0,
"Can't mark dump %u 'completed' in database\n",
scanInfoPtr->dumpEntry.id);
}
tcode = flushSavedEntries(DUMP_SUCCESS);
if (tcode)
ERROR_EXIT(tcode);
}
}
error_exit:
return (code);
}
static l_ref* get_instance(lua_State *l, int n)
{
return *static_cast<l_ref **>(luaL_checkudata(l, n, TNAME(C)));
}
virtual void debug(std::ostream &out)
{
out << "[" << TNAME(C) << "] ";
}
l_ref(l_ref<T> *r, C *i, lua_State *l, const char *classname = TNAME(C))
: val(i), owner_ref(r), c_name(classname)
{
owner_ref->retain();
_push_noretain(l);
}
/* New reference */
l_ref(C *instance, lua_State *l, const char *classname = TNAME(C))
: val(instance), owner_ref(NULL), c_name(classname)
{
_push_noretain(l);
}
/* Empty reference */
l_ref() : val(NULL), owner_ref(NULL), c_name(TNAME(C)) {}
/* Register dependent objects */
l_ref(C *instance, std::shared_ptr<void> owner, lua_State *l,
const char *classname = TNAME(C))
: c_name(classname), ref(instance), owner(owner)
{
push(l);
}
/* Copy existing object */
l_ref(std::shared_ptr<C> ref, lua_State *l,
const char *classname = TNAME(C))
: c_name(classname), ref(ref.get()), owner(ref)
{
push(l);
}
/* New Lua object */
l_ref(C *instance, lua_State *l, const char *classname = TNAME(C))
: c_name(classname), ref(instance), owner(instance)
{
push(l);
}
