-static int read_indx (Records p, int sysno, void *buf, int itemsize,
- int ignoreError)
-{
- int r;
- int pos = (sysno-1)*itemsize;
-
- r = bf_read (p->index_BFile, 1+pos/128, pos%128, itemsize, buf);
- if (r != 1 && !ignoreError)
- {
- logf (LOG_FATAL|LOG_ERRNO, "read in %s at pos %ld",
- p->index_fname, (long) pos);
- abort ();
- exit (1);
- }
- return r;
-}
-
-static void write_indx (Records p, int sysno, void *buf, int itemsize)
-{
- int pos = (sysno-1)*itemsize;
-
- bf_write (p->index_BFile, 1+pos/128, pos%128, itemsize, buf);
-}
-
-static void rec_release_blocks (Records p, int sysno)
-{
- struct record_index_entry entry;
- int freeblock, freenext;
- int dst_type;
-
- if (read_indx (p, sysno, &entry, sizeof(entry), 1) != 1)
- return ;
- p->head.total_bytes -= entry.size;
- freeblock = entry.next;
- assert (freeblock > 0);
- dst_type = freeblock & 7;
- assert (dst_type < REC_BLOCK_TYPES);
- freeblock = freeblock / 8;
- while (freeblock)
- {
- if (bf_read (p->data_BFile[dst_type], freeblock, 0, sizeof(freenext),
- &freenext) != 1)
- {
- logf (LOG_FATAL|LOG_ERRNO, "read in rec_del_single");
- exit (1);
- }
- if (bf_write (p->data_BFile[dst_type], freeblock, 0, sizeof(freenext),
- &p->head.block_free[dst_type]))
- {
- logf (LOG_FATAL|LOG_ERRNO, "write in rec_del_single");
- exit (1);
- }
- p->head.block_free[dst_type] = freeblock;
- freeblock = freenext;
- p->head.block_used[dst_type]--;
- }
-}
-
-static void rec_delete_single (Records p, Record rec)
-{
- struct record_index_entry entry;
-
- rec_release_blocks (p, rec->sysno);
-
- entry.next = p->head.index_free;
- entry.size = 0;
- p->head.index_free = rec->sysno;
- write_indx (p, rec->sysno, &entry, sizeof(entry));
-}
-
-
-static void rec_write_single (Records p, Record rec)
-{
- int i, size = 0;
- char *cptr;
- int dst_type = 0;
- int no_written = 0;
- int block_prev = -1, block_free;
- struct record_index_entry entry;
-
- for (i = 0; i < REC_NO_INFO; i++)
- if (!rec->info[i])
- size += sizeof(*rec->size);
- else
- size += sizeof(*rec->size) + rec->size[i];