src/libstatgrab/disk_stats.c

/* 
 * i-scream central monitoring system
 * http://www.i-scream.org.uk
 * Copyright (C) 2000-2002 i-scream
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "statgrab.h"
#include <stdlib.h>
#include <stdio.h>
#include "ukcprog.h"
#include <string.h>

#ifdef SOLARIS
#include <sys/mnttab.h>
#include <sys/types.h>
#include <sys/statvfs.h>
#include <kstat.h>

#define VALID_FS_TYPES {"ufs", "tmpfs"}

#endif

#define START_VAL 1

char *copy_string(char *orig_ptr, const char *newtext){

        /* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
        orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
        if(orig_ptr==NULL){
                return NULL;
        }
        strcpy(orig_ptr, newtext);

        return orig_ptr;
}


void init_disk_stat(int start, int end, disk_stat_t *disk_stats){

        for(disk_stats+=start; start<=end; start++){
                disk_stats->device_name=NULL;
                disk_stats->fs_type=NULL;
                disk_stats->mnt_point=NULL;
                
                disk_stats++;
        }
}

disk_stat_t *get_disk_stats(int *entries){

        static disk_stat_t *disk_stats;
        static int watermark=-1;

        char *fs_types[] = VALID_FS_TYPES;
        int x, valid_type;

        int num_disks=0;
        struct mnttab mp;
        struct statvfs fs;
        FILE *f;

        disk_stat_t *disk_ptr;

        if(watermark==-1){
                disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
                if(disk_stats==NULL){
                        return NULL;
                }
                watermark=START_VAL;
                init_disk_stat(0, watermark-1, disk_stats);
        }


        if ((f=fopen("/etc/mnttab", "r" ))==NULL){
                return NULL;
        }
        while((getmntent(f, &mp)) == 0){
                if ((statvfs(mp.mnt_mountp, &fs)) !=0){
                        continue;
                }

                valid_type=0;
                for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
                        if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
                                valid_type=1;
                                break;
                        }
                }

                if(valid_type){
                        if(num_disks>watermark-1){
                                disk_ptr=disk_stats;
                                if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
                                        disk_stats=disk_ptr;
                                        return NULL;
                                }

                                watermark=watermark*2;
                                init_disk_stat(num_disks, watermark-1, disk_stats);
                        }

                        disk_ptr=disk_stats+num_disks;
        
                        /* Memory leak in event of realloc failing */
                        /* Maybe make this char[bigenough] and do strncpy's and put a null in the end? 
                           Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
                           of a k each */
                        if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
                                return NULL;
                        }

                        if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
                                return NULL;
                        }
        
                        if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
                                return NULL;
                        }
                        
                        disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
                        disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
                        disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree);
                
                        disk_ptr->total_inodes=(long long)fs.f_files;
                        disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
                        disk_ptr->free_inodes=(long long)fs.f_favail;

                        num_disks++;
                }
        }

        *entries=num_disks;     

        /* If this fails, there is very little i can do about it, so i'll ignore it :) */
        fclose(f);

        return disk_stats;

}

void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){

        for(diskio_stats+=start; start<end; start++){
                diskio_stats->disk_name=NULL;
                
                diskio_stats++;
        }
}

diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){

        if(diskio_stats==NULL){

                if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
                        return NULL;
                }
                diskio_stat_init(0, needed_entries, diskio_stats);
                *cur_entries=needed_entries;

                return diskio_stats;
        }


        if(*cur_entries<needed_entries){
                diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
                if(diskio_stats==NULL){
                        return NULL;
                }
                diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
                *cur_entries=needed_entries;
        }

        return diskio_stats;
}

static diskio_stat_t *diskio_stats=NULL;        
static int num_diskio=0;        

diskio_stat_t *get_diskio_stats(int *entries){

        static int sizeof_diskio_stats=0;
        diskio_stat_t *diskio_stats_ptr;

        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_io_t kios;

        if ((kc = kstat_open()) == NULL) {
                return NULL;
        }

        num_diskio=0;

        for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
                if (!strcmp(ksp->ks_class, "disk")) {

                        if(ksp->ks_type != KSTAT_TYPE_IO) continue;
                        /* We dont want metadevices appearins as num_diskio */
                        if(strcmp(ksp->ks_module, "md")==0) continue;
                        if((kstat_read(kc, ksp, &kios))==-1){   
                        }
                        
                        if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
                                kstat_close(kc);
                                return NULL;
                        }
                        diskio_stats_ptr=diskio_stats+num_diskio;
                        
                        diskio_stats_ptr->read_bytes=kios.nread;
                        
                        diskio_stats_ptr->write_bytes=kios.nwritten;

                        if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);

                        diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
                        num_diskio++;
                }
        }

        kstat_close(kc);

        *entries=num_diskio;

        return diskio_stats;
}

diskio_stat_t *get_diskio_stat_diff(int *entries){
        static diskio_stat_t *diskio_stats_diff=NULL;
        static int sizeof_diskio_stats_diff=0;
        diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr;
        int disks, x, y;

        if(diskio_stats==NULL){
                diskio_stats_ptr=get_diskio_stats(&disks);
                *entries=disks;
                return diskio_stats_ptr;
        }

        diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
        if(diskio_stats_diff==NULL){
                return NULL;
        }

        diskio_stats_diff_ptr=diskio_stats_diff;
        diskio_stats_ptr=diskio_stats;

        for(disks=0;disks<num_diskio;disks++){
                if(diskio_stats_diff_ptr->disk_name!=NULL){
                        free(diskio_stats_diff_ptr->disk_name);
                }
                diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
                diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
                diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
                diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;

                diskio_stats_diff_ptr++;
                diskio_stats_ptr++;
        }

        diskio_stats_ptr=get_diskio_stats(&disks);
        diskio_stats_diff_ptr=diskio_stats_diff;

        for(x=0;x<sizeof_diskio_stats_diff;x++){

                if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
                        diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
                        diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
                        diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
                }else{
                        diskio_stats_ptr=diskio_stats;
                        for(y=0;y<disks;y++){
                                if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
                                        diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
                                        diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
                                        diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;

                                        break;
                                }
                                
                                diskio_stats_ptr++;
                        }
                }

                diskio_stats_ptr++;
                diskio_stats_diff_ptr++;        

        }

        return diskio_stats_diff;
}
Revision:	1.5
Committed:	Sun Feb 23 22:58:08 2003 UTC (21 years, 2 months ago) by pajs
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+73 -10 lines
Log Message:	Added a diff diskio_stats and fixed a bug. This is the last thing needed for the solaris version of the new libstatgrab, bar bug fixes.
#	Content
1	/*
2	* i-scream central monitoring system
3	* http://www.i-scream.org.uk
4	* Copyright (C) 2000-2002 i-scream
5	*
6	* This program is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU General Public License
8	* as published by the Free Software Foundation; either version 2
9	* of the License, or (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19	*/
20
21	#ifdef HAVE_CONFIG_H
22	#include "config.h"
23	#endif
24
25	#include "statgrab.h"
26	#include <stdlib.h>
27	#include <stdio.h>
28	#include "ukcprog.h"
29	#include <string.h>
30
31	#ifdef SOLARIS
32	#include <sys/mnttab.h>
33	#include <sys/types.h>
34	#include <sys/statvfs.h>
35	#include <kstat.h>
36
37	#define VALID_FS_TYPES {"ufs", "tmpfs"}
38
39	#endif
40
41	#define START_VAL 1
42
43	char copy_string(char orig_ptr, const char *newtext){
44
45	/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
46	orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
47	if(orig_ptr==NULL){
48	return NULL;
49	}
50	strcpy(orig_ptr, newtext);
51
52	return orig_ptr;
53	}
54
55
56	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
57
58	for(disk_stats+=start; start<=end; start++){
59	disk_stats->device_name=NULL;
60	disk_stats->fs_type=NULL;
61	disk_stats->mnt_point=NULL;
62
63	disk_stats++;
64	}
65	}
66
67	disk_stat_t get_disk_stats(int entries){
68
69	static disk_stat_t *disk_stats;
70	static int watermark=-1;
71
72	char *fs_types[] = VALID_FS_TYPES;
73	int x, valid_type;
74
75	int num_disks=0;
76	struct mnttab mp;
77	struct statvfs fs;
78	FILE *f;
79
80	disk_stat_t *disk_ptr;
81
82	if(watermark==-1){
83	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
84	if(disk_stats==NULL){
85	return NULL;
86	}
87	watermark=START_VAL;
88	init_disk_stat(0, watermark-1, disk_stats);
89	}
90
91
92	if ((f=fopen("/etc/mnttab", "r" ))==NULL){
93	return NULL;
94	}
95	while((getmntent(f, &mp)) == 0){
96	if ((statvfs(mp.mnt_mountp, &fs)) !=0){
97	continue;
98	}
99
100	valid_type=0;
101	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
102	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
103	valid_type=1;
104	break;
105	}
106	}
107
108	if(valid_type){
109	if(num_disks>watermark-1){
110	disk_ptr=disk_stats;
111	if((disk_stats=realloc(disk_stats, (watermark2 sizeof(disk_stat_t))))==NULL){
112	disk_stats=disk_ptr;
113	return NULL;
114	}
115
116	watermark=watermark*2;
117	init_disk_stat(num_disks, watermark-1, disk_stats);
118	}
119
120	disk_ptr=disk_stats+num_disks;
121
122	/* Memory leak in event of realloc failing */
123	/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
124	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
125	of a k each */
126	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
127	return NULL;
128	}
129
130	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
131	return NULL;
132	}
133
134	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
135	return NULL;
136	}
137
138	disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
139	disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
140	disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree);
141
142	disk_ptr->total_inodes=(long long)fs.f_files;
143	disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
144	disk_ptr->free_inodes=(long long)fs.f_favail;
145
146	num_disks++;
147	}
148	}
149
150	*entries=num_disks;
151
152	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
153	fclose(f);
154
155	return disk_stats;
156
157	}
158
159	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
160
161	for(diskio_stats+=start; start<end; start++){
162	diskio_stats->disk_name=NULL;
163
164	diskio_stats++;
165	}
166	}
167
168	diskio_stat_t diskio_stat_malloc(int needed_entries, int cur_entries, diskio_stat_t *diskio_stats){
169
170	if(diskio_stats==NULL){
171
172	if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
173	return NULL;
174	}
175	diskio_stat_init(0, needed_entries, diskio_stats);
176	*cur_entries=needed_entries;
177
178	return diskio_stats;
179	}
180
181
182	if(*cur_entries<needed_entries){
183	diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
184	if(diskio_stats==NULL){
185	return NULL;
186	}
187	diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
188	*cur_entries=needed_entries;
189	}
190
191	return diskio_stats;
192	}
193
194	static diskio_stat_t *diskio_stats=NULL;
195	static int num_diskio=0;
196
197	diskio_stat_t get_diskio_stats(int entries){
198
199	static int sizeof_diskio_stats=0;
200	diskio_stat_t *diskio_stats_ptr;
201
202	kstat_ctl_t *kc;
203	kstat_t *ksp;
204	kstat_io_t kios;
205
206	if ((kc = kstat_open()) == NULL) {
207	return NULL;
208	}
209
210	num_diskio=0;
211
212	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
213	if (!strcmp(ksp->ks_class, "disk")) {
214
215	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
216	/* We dont want metadevices appearins as num_diskio */
217	if(strcmp(ksp->ks_module, "md")==0) continue;
218	if((kstat_read(kc, ksp, &kios))==-1){
219	}
220
221	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
222	kstat_close(kc);
223	return NULL;
224	}
225	diskio_stats_ptr=diskio_stats+num_diskio;
226
227	diskio_stats_ptr->read_bytes=kios.nread;
228
229	diskio_stats_ptr->write_bytes=kios.nwritten;
230
231	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
232
233	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
234	num_diskio++;
235	}
236	}
237
238	kstat_close(kc);
239
240	*entries=num_diskio;
241
242	return diskio_stats;
243	}
244
245	diskio_stat_t get_diskio_stat_diff(int entries){
246	static diskio_stat_t *diskio_stats_diff=NULL;
247	static int sizeof_diskio_stats_diff=0;
248	diskio_stat_t diskio_stats_diff_ptr, diskio_stats_ptr;
249	int disks, x, y;
250
251	if(diskio_stats==NULL){
252	diskio_stats_ptr=get_diskio_stats(&disks);
253	*entries=disks;
254	return diskio_stats_ptr;
255	}
256
257	diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
258	if(diskio_stats_diff==NULL){
259	return NULL;
260	}
261
262	diskio_stats_diff_ptr=diskio_stats_diff;
263	diskio_stats_ptr=diskio_stats;
264
265	for(disks=0;disks<num_diskio;disks++){
266	if(diskio_stats_diff_ptr->disk_name!=NULL){
267	free(diskio_stats_diff_ptr->disk_name);
268	}
269	diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
270	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
271	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
272	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
273
274	diskio_stats_diff_ptr++;
275	diskio_stats_ptr++;
276	}
277
278	diskio_stats_ptr=get_diskio_stats(&disks);
279	diskio_stats_diff_ptr=diskio_stats_diff;
280
281	for(x=0;x<sizeof_diskio_stats_diff;x++){
282
283	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
284	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
285	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
286	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
287	}else{
288	diskio_stats_ptr=diskio_stats;
289	for(y=0;y<disks;y++){
290	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
291	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
292	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
293	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
294
295	break;
296	}
297
298	diskio_stats_ptr++;
299	}
300	}
301
302	diskio_stats_ptr++;
303	diskio_stats_diff_ptr++;
304
305	}
306
307	return diskio_stats_diff;
308	}