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

#ifdef SOLARIS
#include <sys/mnttab.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_stats_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:	1.7
Committed:	Fri Feb 28 22:59:35 2003 UTC (21 years, 2 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.6:	+1 -5 lines
Log Message:	Tidy up of configure script, and includes.
#	User	Rev	Content
1	pajs	1.1	/*
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 <stdlib.h>
26			#include <stdio.h>
27			#include <string.h>
28	tdb	1.7	#include "statgrab.h"
29	pajs	1.1
30			#ifdef SOLARIS
31			#include <sys/mnttab.h>
32			#include <sys/statvfs.h>
33	pajs	1.4	#include <kstat.h>
34	pajs	1.1	#define VALID_FS_TYPES {"ufs", "tmpfs"}
35			#endif
36
37			#define START_VAL 1
38
39			char copy_string(char orig_ptr, const char *newtext){
40
41			/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
42			orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
43			if(orig_ptr==NULL){
44			return NULL;
45			}
46			strcpy(orig_ptr, newtext);
47
48			return orig_ptr;
49			}
50
51
52			void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
53
54			for(disk_stats+=start; start<=end; start++){
55			disk_stats->device_name=NULL;
56			disk_stats->fs_type=NULL;
57			disk_stats->mnt_point=NULL;
58
59			disk_stats++;
60			}
61			}
62
63			disk_stat_t get_disk_stats(int entries){
64
65			static disk_stat_t *disk_stats;
66			static int watermark=-1;
67
68			char *fs_types[] = VALID_FS_TYPES;
69			int x, valid_type;
70
71			int num_disks=0;
72			struct mnttab mp;
73			struct statvfs fs;
74			FILE *f;
75
76			disk_stat_t *disk_ptr;
77
78			if(watermark==-1){
79			disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
80			if(disk_stats==NULL){
81			return NULL;
82			}
83			watermark=START_VAL;
84			init_disk_stat(0, watermark-1, disk_stats);
85			}
86
87
88			if ((f=fopen("/etc/mnttab", "r" ))==NULL){
89			return NULL;
90			}
91			while((getmntent(f, &mp)) == 0){
92			if ((statvfs(mp.mnt_mountp, &fs)) !=0){
93			continue;
94			}
95
96			valid_type=0;
97			for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
98			if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
99			valid_type=1;
100			break;
101			}
102			}
103
104			if(valid_type){
105			if(num_disks>watermark-1){
106			disk_ptr=disk_stats;
107			if((disk_stats=realloc(disk_stats, (watermark2 sizeof(disk_stat_t))))==NULL){
108			disk_stats=disk_ptr;
109			return NULL;
110			}
111
112			watermark=watermark*2;
113			init_disk_stat(num_disks, watermark-1, disk_stats);
114			}
115
116			disk_ptr=disk_stats+num_disks;
117
118			/* Memory leak in event of realloc failing */
119			/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
120			Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
121			of a k each */
122			if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
123			return NULL;
124			}
125
126			if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
127			return NULL;
128			}
129
130			if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
131			return NULL;
132			}
133
134			disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
135			disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
136			disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree);
137
138			disk_ptr->total_inodes=(long long)fs.f_files;
139			disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
140			disk_ptr->free_inodes=(long long)fs.f_favail;
141
142			num_disks++;
143			}
144			}
145
146			*entries=num_disks;
147
148			/* If this fails, there is very little i can do about it, so i'll ignore it :) */
149			fclose(f);
150
151			return disk_stats;
152
153			}
154	pajs	1.2
155	pajs	1.4	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
156
157			for(diskio_stats+=start; start<end; start++){
158			diskio_stats->disk_name=NULL;
159
160			diskio_stats++;
161			}
162			}
163
164			diskio_stat_t diskio_stat_malloc(int needed_entries, int cur_entries, diskio_stat_t *diskio_stats){
165
166			if(diskio_stats==NULL){
167
168			if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
169			return NULL;
170			}
171			diskio_stat_init(0, needed_entries, diskio_stats);
172			*cur_entries=needed_entries;
173
174			return diskio_stats;
175			}
176
177
178			if(*cur_entries<needed_entries){
179			diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
180			if(diskio_stats==NULL){
181			return NULL;
182			}
183			diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
184			*cur_entries=needed_entries;
185			}
186
187			return diskio_stats;
188			}
189
190			static diskio_stat_t *diskio_stats=NULL;
191	pajs	1.5	static int num_diskio=0;
192	pajs	1.4
193	tdb	1.3	diskio_stat_t get_diskio_stats(int entries){
194	pajs	1.2
195	pajs	1.4	static int sizeof_diskio_stats=0;
196			diskio_stat_t *diskio_stats_ptr;
197
198			kstat_ctl_t *kc;
199			kstat_t *ksp;
200			kstat_io_t kios;
201
202			if ((kc = kstat_open()) == NULL) {
203			return NULL;
204			}
205
206	pajs	1.5	num_diskio=0;
207
208	pajs	1.4	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
209			if (!strcmp(ksp->ks_class, "disk")) {
210
211			if(ksp->ks_type != KSTAT_TYPE_IO) continue;
212	pajs	1.5	/* We dont want metadevices appearins as num_diskio */
213	pajs	1.4	if(strcmp(ksp->ks_module, "md")==0) continue;
214			if((kstat_read(kc, ksp, &kios))==-1){
215			}
216
217	pajs	1.5	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
218	pajs	1.4	kstat_close(kc);
219			return NULL;
220			}
221	pajs	1.5	diskio_stats_ptr=diskio_stats+num_diskio;
222	pajs	1.4
223			diskio_stats_ptr->read_bytes=kios.nread;
224
225			diskio_stats_ptr->write_bytes=kios.nwritten;
226
227			if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
228
229			diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
230	pajs	1.5	num_diskio++;
231	pajs	1.4	}
232			}
233
234			kstat_close(kc);
235
236	pajs	1.5	*entries=num_diskio;
237	pajs	1.4
238			return diskio_stats;
239	pajs	1.5	}
240
241	pajs	1.6	diskio_stat_t get_diskio_stats_diff(int entries){
242	pajs	1.5	static diskio_stat_t *diskio_stats_diff=NULL;
243			static int sizeof_diskio_stats_diff=0;
244			diskio_stat_t diskio_stats_diff_ptr, diskio_stats_ptr;
245			int disks, x, y;
246
247			if(diskio_stats==NULL){
248			diskio_stats_ptr=get_diskio_stats(&disks);
249			*entries=disks;
250			return diskio_stats_ptr;
251			}
252
253			diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
254			if(diskio_stats_diff==NULL){
255			return NULL;
256			}
257
258			diskio_stats_diff_ptr=diskio_stats_diff;
259			diskio_stats_ptr=diskio_stats;
260
261			for(disks=0;disks<num_diskio;disks++){
262			if(diskio_stats_diff_ptr->disk_name!=NULL){
263			free(diskio_stats_diff_ptr->disk_name);
264			}
265			diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
266			diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
267			diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
268			diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
269
270			diskio_stats_diff_ptr++;
271			diskio_stats_ptr++;
272			}
273
274			diskio_stats_ptr=get_diskio_stats(&disks);
275			diskio_stats_diff_ptr=diskio_stats_diff;
276
277			for(x=0;x<sizeof_diskio_stats_diff;x++){
278
279			if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
280			diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
281			diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
282			diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
283			}else{
284			diskio_stats_ptr=diskio_stats;
285			for(y=0;y<disks;y++){
286			if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
287			diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
288			diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
289			diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
290
291			break;
292			}
293
294			diskio_stats_ptr++;
295			}
296			}
297
298			diskio_stats_ptr++;
299			diskio_stats_diff_ptr++;
300
301			}
302
303			return diskio_stats_diff;
304	pajs	1.2	}