struct addresses_to_be_filed *atbf = NULL;
-/* This temp file holds the queue of operations for AdjRefCount() */
-static FILE *arcfp = NULL;
-void AdjRefCountList(long *msgnum, long nmsg, int incr);
-
/*
* These are the four-character field headers we use when outputting
* messages in Citadel format (as opposed to RFC822 format).
/*
- * AdjRefCount - submit an adjustment to the reference count for a message.
- * (These are just queued -- we actually process them later.)
+ * Convenience function to process a big block of AdjRefCount() operations
*/
-void AdjRefCount(long msgnum, int incr)
-{
- struct arcq new_arcq;
- int rv = 0;
-
- syslog(LOG_DEBUG, "msgbase: AdjRefCount() msg %ld ref count delta %+d", msgnum, incr);
-
- begin_critical_section(S_SUPPMSGMAIN);
- if (arcfp == NULL) {
- arcfp = fopen(file_arcq, "ab+");
- chown(file_arcq, CTDLUID, (-1));
- chmod(file_arcq, 0600);
- }
- end_critical_section(S_SUPPMSGMAIN);
-
- /* msgnum < 0 means that we're trying to close the file */
- if (msgnum < 0) {
- syslog(LOG_DEBUG, "msgbase: closing the AdjRefCount queue file");
- begin_critical_section(S_SUPPMSGMAIN);
- if (arcfp != NULL) {
- fclose(arcfp);
- arcfp = NULL;
- }
- end_critical_section(S_SUPPMSGMAIN);
- return;
- }
-
- /*
- * If we can't open the queue, perform the operation synchronously.
- */
- if (arcfp == NULL) {
- TDAP_AdjRefCount(msgnum, incr);
- return;
- }
-
- new_arcq.arcq_msgnum = msgnum;
- new_arcq.arcq_delta = incr;
- rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
- if (rv == -1) {
- syslog(LOG_EMERG, "%s: %m", file_arcq);
- }
- fflush(arcfp);
-
- return;
-}
-
-
void AdjRefCountList(long *msgnum, long nmsg, int incr)
{
- long i, the_size, offset;
- struct arcq *new_arcq;
- int rv = 0;
-
- begin_critical_section(S_SUPPMSGMAIN);
- if (arcfp == NULL) {
- arcfp = fopen(file_arcq, "ab+");
- chown(file_arcq, CTDLUID, (-1));
- chmod(file_arcq, 0600);
- }
- end_critical_section(S_SUPPMSGMAIN);
-
- /*
- * If we can't open the queue, perform the operation synchronously.
- */
- if (arcfp == NULL) {
- for (i = 0; i < nmsg; i++)
- TDAP_AdjRefCount(msgnum[i], incr);
- return;
- }
+ long i;
- the_size = sizeof(struct arcq) * nmsg;
- new_arcq = malloc(the_size);
for (i = 0; i < nmsg; i++) {
- syslog(LOG_DEBUG, "msgbase: AdjRefCountList() msg %ld ref count delta %+d", msgnum[i], incr);
- new_arcq[i].arcq_msgnum = msgnum[i];
- new_arcq[i].arcq_delta = incr;
+ AdjRefCount(msgnum[i], incr);
}
- rv = 0;
- offset = 0;
- while ((rv >= 0) && (offset < the_size))
- {
- rv = fwrite(new_arcq + offset, 1, the_size - offset, arcfp);
- if (rv == -1) {
- syslog(LOG_ERR, "%s: %m", file_arcq);
- }
- else {
- offset += rv;
- }
- }
- free(new_arcq);
- fflush(arcfp);
-
- return;
}
/*
- * TDAP_ProcessAdjRefCountQueue()
- *
- * Process the queue of message count adjustments that was created by calls
- * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
- * for each one. This should be an "off hours" operation.
+ * AdjRefCount - adjust the reference count for a message. We need to delete from disk any message whose reference count reaches zero.
*/
-int TDAP_ProcessAdjRefCountQueue(void)
-{
- char file_arcq_temp[PATH_MAX];
- int r;
- FILE *fp;
- struct arcq arcq_rec;
- int num_records_processed = 0;
-
- snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
-
- begin_critical_section(S_SUPPMSGMAIN);
- if (arcfp != NULL) {
- fclose(arcfp);
- arcfp = NULL;
- }
-
- r = link(file_arcq, file_arcq_temp);
- if (r != 0) {
- syslog(LOG_ERR, "%s: %m", file_arcq_temp);
- end_critical_section(S_SUPPMSGMAIN);
- return(num_records_processed);
- }
-
- unlink(file_arcq);
- end_critical_section(S_SUPPMSGMAIN);
-
- fp = fopen(file_arcq_temp, "rb");
- if (fp == NULL) {
- syslog(LOG_ERR, "%s: %m", file_arcq_temp);
- return(num_records_processed);
- }
-
- while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
- TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
- ++num_records_processed;
- }
-
- fclose(fp);
- r = unlink(file_arcq_temp);
- if (r != 0) {
- syslog(LOG_ERR, "%s: %m", file_arcq_temp);
- }
-
- return(num_records_processed);
-}
-
-
-/*
- * TDAP_AdjRefCount - adjust the reference count for a message.
- * This one does it "for real" because it's called by
- * the autopurger function that processes the queue
- * created by AdjRefCount(). If a message's reference
- * count becomes zero, we also delete the message from
- * disk and de-index it.
- */
-void TDAP_AdjRefCount(long msgnum, int incr)
+void AdjRefCount(long msgnum, int incr)
{
struct MetaData smi;
long delnum;
smi.meta_refcount += incr;
PutMetaData(&smi);
end_critical_section(S_SUPPMSGMAIN);
- syslog(LOG_DEBUG, "msgbase: TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d", msgnum, incr, smi.meta_refcount);
+ syslog(LOG_DEBUG, "msgbase: AdjRefCount() msg %ld ref count delta %+d, is now %d", msgnum, incr, smi.meta_refcount);
- /* If the reference count is now zero, delete the message
- * (and its supplementary record as well).
+ /* If the reference count is now zero, delete both the message and its metadata record.
*/
if (smi.meta_refcount == 0) {
syslog(LOG_DEBUG, "msgbase: deleting message <%ld>", msgnum);
projects / citadel.git / blobdiff