1 /*****************************************************************************
2 * RRDtool 1.2.30 Copyright by Tobi Oetiker, 1997-2009
3 *****************************************************************************
4 * rrd_lastupdate Get the last datum entered for each DS
5 *****************************************************************************/
6
7 #include "rrd_tool.h"
8 #include "rrd_rpncalc.h"
9 #include <stdarg.h>
10
11 int
rrd_lastupdate(int argc,char ** argv,time_t * last_update,unsigned long * ds_cnt,char *** ds_namv,char *** last_ds)12 rrd_lastupdate(int argc, char **argv, time_t *last_update,
13 unsigned long *ds_cnt, char ***ds_namv, char ***last_ds) {
14 unsigned long i=0;
15 char *filename;
16 FILE *in_file;
17 rrd_t rrd;
18
19 if(argc < 2){
20 rrd_set_error("please specify an rrd");
21 return -1;
22 }
23 filename = argv[1];
24
25 if(rrd_open(filename,&in_file,&rrd, RRD_READONLY)==-1){
26 return(-1);
27 }
28 fclose(in_file);
29
30 *last_update=rrd.live_head->last_up;
31 *ds_cnt = rrd.stat_head->ds_cnt;
32 if (((*ds_namv) =
33 (char **) malloc(rrd.stat_head->ds_cnt * sizeof(char*)))==NULL){
34 rrd_set_error("malloc fetch ds_namv array");
35 rrd_free(&rrd);
36 return(-1);
37 }
38
39 if (((*last_ds) =
40 (char **) malloc(rrd.stat_head->ds_cnt * sizeof(char*)))==NULL){
41 rrd_set_error("malloc fetch last_ds array");
42 rrd_free(&rrd);
43 free(*ds_namv);
44 return(-1);
45 }
46
47 for(i=0;i<rrd.stat_head->ds_cnt;i++){
48 (*ds_namv)[i] = sprintf_alloc("%s", rrd.ds_def[i].ds_nam);
49 (*last_ds)[i] = sprintf_alloc("%s", rrd.pdp_prep[i].last_ds);
50 }
51
52 rrd_free(&rrd);
53 return(0);
54 }
55