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root/i-scream/projects/libstatgrab/src/libstatgrab/disk_stats.c

Comparing projects/libstatgrab/src/libstatgrab/disk_stats.c (file contents):
Revision 1.7 by tdb, Fri Feb 28 22:59:35 2003 UTC vs.
Revision 1.19 by ats, Thu Aug 28 21:33:42 2003 UTC

#	Line 1 | Line 1
1		/*
2		* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
3	>	* http://www.i-scream.org
4	>	* Copyright (C) 2000-2003 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
#	Line 22 | Line 22
22		#include "config.h"
23		#endif
24
25	–	#include <stdlib.h>
25		#include <stdio.h>
26	+	#include <stdlib.h>
27		#include <string.h>
28		#include "statgrab.h"
29
#	Line 34 | Line 34
34		#define VALID_FS_TYPES {"ufs", "tmpfs"}
35		#endif
36
37	+	#ifdef LINUX
38	+	#include <sys/vfs.h>
39	+	#include <mntent.h>
40	+	#include "tools.h"
41	+	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
42	+	#endif
43	+
44	+	#ifdef FREEBSD
45	+	#include <sys/param.h>
46	+	#include <sys/ucred.h>
47	+	#include <sys/mount.h>
48	+	#include <sys/dkstat.h>
49	+	#include <devstat.h>
50	+	#define VALID_FS_TYPES {"ufs", "mfs"}
51	+	#endif
52		#define START_VAL 1
53
54		char *copy_string(char *orig_ptr, const char *newtext){
#	Line 67 | Line 82 | disk_stat_t *get_disk_stats(int *entries){
82
83		char *fs_types[] = VALID_FS_TYPES;
84		int x, valid_type;
70	–
85		int num_disks=0;
86	<	struct mnttab mp;
73	<	struct statvfs fs;
86	>	#if defined(LINUX) || defined (SOLARIS)
87		FILE *f;
88	+	#endif
89
90		disk_stat_t *disk_ptr;
91
92	+	#ifdef SOLARIS
93	+	struct mnttab mp;
94	+	struct statvfs fs;
95	+	#endif
96	+	#ifdef LINUX
97	+	struct mntent *mp;
98	+	struct statfs fs;
99	+	#endif
100	+	#ifdef FREEBSD
101	+	int nummnt;
102	+	struct statfs *mp;
103	+	#endif
104	+
105		if(watermark==-1){
106		disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
107		if(disk_stats==NULL){
#	Line 83 | Line 110 | disk_stat_t *get_disk_stats(int *entries){
110		watermark=START_VAL;
111		init_disk_stat(0, watermark-1, disk_stats);
112		}
113	+	#ifdef FREEBSD
114	+	nummnt=getmntinfo(&mp , MNT_LOCAL);
115	+	if (nummnt<=0){
116	+	return NULL;
117	+	}
118	+	for(;nummnt--; mp++){
119	+	valid_type=0;
120	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
121	+	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
122	+	valid_type=1;
123	+	break;
124	+	}
125	+	}
126	+	#endif
127
128	+	#ifdef LINUX
129	+	if ((f=setmntent("/etc/mtab", "r" ))==NULL){
130	+	return NULL;
131	+	}
132
133	+	while((mp=getmntent(f))){
134	+	if((statfs(mp->mnt_dir, &fs)) !=0){
135	+	continue;
136	+	}
137	+
138	+	valid_type=0;
139	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
140	+	if(strcmp(mp->mnt_type, fs_types[x]) ==0){
141	+	valid_type=1;
142	+	break;
143	+	}
144	+	}
145	+	#endif
146	+
147	+	#ifdef SOLARIS
148		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
149		return NULL;
150		}
#	Line 92 | Line 152 | disk_stat_t *get_disk_stats(int *entries){
152		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
153		continue;
154		}
95	–
155		valid_type=0;
156		for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
157		if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
#	Line 100 | Line 159 | disk_stat_t *get_disk_stats(int *entries){
159		break;
160		}
161		}
162	+	#endif
163
164		if(valid_type){
165		if(num_disks>watermark-1){
#	Line 114 | Line 174 | disk_stat_t *get_disk_stats(int *entries){
174		}
175
176		disk_ptr=disk_stats+num_disks;
177	<
177	>	#ifdef FREEBSD
178	>	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
179	>	return NULL;
180	>	}
181	>
182	>	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
183	>	return NULL;
184	>	}
185	>
186	>	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
187	>	return NULL;
188	>	}
189	>
190	>	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
191	>	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
192	>	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
193	>
194	>	disk_ptr->total_inodes=(long long)mp->f_files;
195	>	disk_ptr->free_inodes=(long long)mp->f_ffree;
196	>	/* Freebsd doesn't have a "available" inodes */
197	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
198	>	#endif
199	>	#ifdef LINUX
200	>	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
201	>	return NULL;
202	>	}
203	>
204	>	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){
205	>	return NULL;
206	>	}
207	>
208	>	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){
209	>	return NULL;
210	>	}
211	>	disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
212	>	disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail;
213	>	disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree);
214	>
215	>	disk_ptr->total_inodes=(long long)fs.f_files;
216	>	disk_ptr->free_inodes=(long long)fs.f_ffree;
217	>	/* Linux doesn't have a "available" inodes */
218	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
219	>	#endif
220	>
221	>	#ifdef SOLARIS
222		/* Memory leak in event of realloc failing */
223		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
224	<	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
225	<	of a k each */
224	>	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
225	>	* be upwards of a k each
226	>	*/
227		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
228		return NULL;
229		}
#	Line 138 | Line 243 | disk_stat_t *get_disk_stats(int *entries){
243		disk_ptr->total_inodes=(long long)fs.f_files;
244		disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
245		disk_ptr->free_inodes=(long long)fs.f_favail;
246	<
246	>	#endif
247		num_disks++;
248		}
249		}
#	Line 146 | Line 251 | disk_stat_t *get_disk_stats(int *entries){
251		*entries=num_disks;
252
253		/* If this fails, there is very little i can do about it, so i'll ignore it :) */
254	+	#if defined(LINUX) || defined(SOLARIS)
255		fclose(f);
256	+	#endif
257
258		return disk_stats;
259
260		}
154	–
261		void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
262
263		for(diskio_stats+=start; start<end; start++){
#	Line 195 | Line 301 | diskio_stat_t *get_diskio_stats(int *entries){
301		static int sizeof_diskio_stats=0;
302		diskio_stat_t *diskio_stats_ptr;
303
304	+	#ifdef SOLARIS
305		kstat_ctl_t *kc;
306		kstat_t *ksp;
307		kstat_io_t kios;
308	+	#endif
309	+	#ifdef LINUX
310	+	FILE *f;
311	+	char *line_ptr;
312	+	int major, minor;
313	+	char dev_letter;
314	+	#endif
315	+	#ifdef FREEBSD
316	+	struct statinfo stats;
317	+	int counter;
318	+	struct device_selection *dev_sel = NULL;
319	+	int n_selected, n_selections;
320	+	long sel_gen;
321	+	struct devstat *dev_ptr;
322	+	#endif
323	+	num_diskio=0;
324
325	+	#ifdef FREEBSD
326	+	stats.dinfo=malloc(sizeof(struct devinfo));
327	+	if(stats.dinfo==NULL) return NULL;
328	+	if ((getdevs(&stats)) < 0) return NULL;
329	+	/* Not aware of a get all devices, so i said 999. If we ever
330	+	* find a machine with more than 999 disks, then i'll change
331	+	* this number :)
332	+	*/
333	+	if (selectdevs(&dev_sel, &n_selected, &n_selections, &sel_gen, stats.dinfo->generation, stats.dinfo->devices, stats.dinfo->numdevs, NULL, 0, NULL, 0, DS_SELECT_ONLY, 999, 1) < 0) return NULL;
334	+
335	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
336	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
337	+
338	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
339	+	* devices.. like mem, proc.. and also doesn't report floppy
340	+	* drives etc unless they are doing stuff :)
341	+	*/
342	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
343	+	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
344	+	return NULL;
345	+	}
346	+	diskio_stats_ptr=diskio_stats+num_diskio;
347	+
348	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
349	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
350	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
351	+	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
352	+	diskio_stats_ptr->systime=time(NULL);
353	+
354	+	num_diskio++;
355	+	}
356	+	free(dev_sel);
357	+	free(stats.dinfo);
358	+
359	+	#endif
360	+	#ifdef SOLARIS
361		if ((kc = kstat_open()) == NULL) {
362		return NULL;
363		}
364
206	–	num_diskio=0;
207	–
365		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
366		if (!strcmp(ksp->ks_class, "disk")) {
367
#	Line 227 | Line 384 | diskio_stat_t *get_diskio_stats(int *entries){
384		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
385
386		diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
387	+	diskio_stats_ptr->systime=time(NULL);
388		num_diskio++;
389		}
390		}
391
392		kstat_close(kc);
393	+	#endif
394
395	+	#ifdef LINUX
396	+	f=fopen("/proc/stat", "r");
397	+	if(f==NULL){
398	+	*entries=0;
399	+	return NULL;
400	+	}
401	+	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
402	+	*entries=0;
403	+	fclose(f);
404	+	return NULL;
405	+	}
406	+	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
407	+	line_ptr++;
408	+	if(*line_ptr=='\0'){
409	+	break;
410	+	}
411	+	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
412	+	fclose(f);
413	+	*entries=0;
414	+	return NULL;
415	+	}
416	+	diskio_stats_ptr=diskio_stats+num_diskio;
417	+
418	+
419	+	if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \
420	+	&major, \
421	+	&minor, \
422	+	&diskio_stats_ptr->read_bytes, \
423	+	&diskio_stats_ptr->write_bytes))!=4) {
424	+	continue;
425	+	}
426	+
427	+	/* We read the number of blocks. Blocks are stored in 512 bytes */
428	+	diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
429	+	diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;
430	+
431	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
432	+
433	+	switch(major){
434	+	case 2:
435	+	if(minor==0){
436	+	diskio_stats_ptr->disk_name=strdup("fd0");
437	+	}
438	+	break;
439	+
440	+	case 3:
441	+	if(minor==0){
442	+	diskio_stats_ptr->disk_name=strdup("hda");
443	+	}else{
444	+	diskio_stats_ptr->disk_name=strdup("hdb");
445	+	}
446	+	break;
447	+
448	+	case 22:
449	+	if(minor==0){
450	+	diskio_stats_ptr->disk_name=strdup("hdc");
451	+	}else{
452	+	diskio_stats_ptr->disk_name=strdup("hdd");
453	+	}
454	+	break;
455	+	case 8:
456	+	dev_letter='a'+(minor/16);
457	+	diskio_stats_ptr->disk_name=malloc(4);
458	+	snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter);
459	+	break;
460	+	default:
461	+	/* I have no idea what it is then :) */
462	+	diskio_stats_ptr->disk_name=malloc(16);
463	+	snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor);
464	+	break;
465	+	}
466	+
467	+	diskio_stats_ptr->systime=time(NULL);
468	+	num_diskio++;
469	+	}
470	+
471	+	fclose(f);
472	+
473	+	#endif
474		*entries=num_diskio;
475
476		return diskio_stats;
#	Line 299 | Line 537 | diskio_stat_t *get_diskio_stats_diff(int *entries){
537		diskio_stats_diff_ptr++;
538
539		}
540	<
540	>
541	>	*entries=sizeof_diskio_stats_diff;
542		return diskio_stats_diff;
543		}

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