uchar *_nisam_fetch_keypage(register N_INFO *info, N_KEYDEF *keyinfo, my_off_t page, uchar *buff, int return_buffer) { uchar *tmp; tmp=(uchar*) key_cache_read(info->s->kfile,page,(byte*) buff, (uint) keyinfo->base.block_length, (uint) keyinfo->base.block_length, return_buffer); if (tmp == info->buff) { info->update|=HA_STATE_BUFF_SAVED; info->int_pos=(ulong) page; info->buff_used=1; } else { info->update&= ~HA_STATE_BUFF_SAVED; if (tmp) info->int_pos=(ulong) page; else { info->int_pos=NI_POS_ERROR; DBUG_PRINT("error",("Got errno: %d from key_cache_read",my_errno)); my_errno=HA_ERR_CRASHED; } } return tmp; } /* _nisam_fetch_keypage */
my_off_t _mi_new(MI_INFO *info, MI_KEYDEF *keyinfo, int level) { my_off_t pos; uchar buff[8]; DBUG_ENTER("_mi_new"); if ((pos= info->s->state.key_del[keyinfo->block_size_index]) == HA_OFFSET_ERROR) { if (info->state->key_file_length >= info->s->base.max_key_file_length - keyinfo->block_length) { set_my_errno(HA_ERR_INDEX_FILE_FULL); DBUG_RETURN(HA_OFFSET_ERROR); } pos=info->state->key_file_length; info->state->key_file_length+= keyinfo->block_length; } else { if (!key_cache_read(info->s->key_cache, keycache_thread_var(), info->s->kfile, pos, level, buff, (uint) sizeof(buff), (uint) keyinfo->block_length,0)) pos= HA_OFFSET_ERROR; else info->s->state.key_del[keyinfo->block_size_index]= mi_sizekorr(buff); } info->s->state.changed|= STATE_NOT_SORTED_PAGES; DBUG_PRINT("exit",("Pos: %ld",(long) pos)); DBUG_RETURN(pos); } /* _mi_new */
ulong _nisam_new(register N_INFO *info, N_KEYDEF *keyinfo) { uint keynr= (uint) (keyinfo - info->s->keyinfo); ulong pos; DBUG_ENTER("_nisam_new"); if ((pos=info->s->state.key_del[keynr]) == NI_POS_ERROR) { if (info->s->state.key_file_length >= info->s->base.max_key_file_length) { my_errno=HA_ERR_INDEX_FILE_FULL; DBUG_RETURN(NI_POS_ERROR); } pos=info->s->state.key_file_length; info->s->state.key_file_length+= keyinfo->base.block_length; } else { if (!key_cache_read(info->s->kfile,pos, (byte*) &info->s->state.key_del[keynr], (uint) sizeof(long), (uint) keyinfo->base.block_length,0)) pos= NI_POS_ERROR; } DBUG_PRINT("exit",("Pos: %d",pos)); DBUG_RETURN(pos); } /* _nisam_new */
uchar *_mi_fetch_keypage(MI_INFO *info, MI_KEYDEF *keyinfo, my_off_t page, int level, uchar *buff, int return_buffer) { uchar *tmp; uint page_size; DBUG_ENTER("_mi_fetch_keypage"); DBUG_PRINT("enter",("page: %ld", (long) page)); tmp=(uchar*) key_cache_read(info->s->key_cache, keycache_thread_var(), info->s->kfile, page, level, (uchar*) buff, (uint) keyinfo->block_length, (uint) keyinfo->block_length, return_buffer); if (tmp == info->buff) info->buff_used=1; else if (!tmp) { DBUG_PRINT("error",("Got errno: %d from key_cache_read",my_errno())); info->last_keypage=HA_OFFSET_ERROR; mi_print_error(info->s, HA_ERR_CRASHED); set_my_errno(HA_ERR_CRASHED); DBUG_RETURN(0); } info->last_keypage=page; page_size=mi_getint(tmp); if (page_size < 4 || page_size > keyinfo->block_length) { DBUG_PRINT("error",("page %lu had wrong page length: %u", (ulong) page, page_size)); DBUG_DUMP("page", tmp, keyinfo->block_length); info->last_keypage = HA_OFFSET_ERROR; mi_print_error(info->s, HA_ERR_CRASHED); set_my_errno(HA_ERR_CRASHED); tmp = 0; } DBUG_RETURN(tmp); } /* _mi_fetch_keypage */