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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 1.12 by pajs, Wed Mar 5 17:11:22 2003 UTC vs.
Revision 1.39 by tdb, Mon Nov 10 21:07:04 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 <stdio.h>
26		#include <stdlib.h>
27		#include <string.h>
28		#include "statgrab.h"
29
30		#ifdef SOLARIS
30	–	#include <stdio.h>
31		#include <sys/mnttab.h>
32		#include <sys/statvfs.h>
33		#include <kstat.h>
#	Line 35 | Line 35
35		#endif
36
37		#ifdef LINUX
38	<	#include <stdio.h>
38	>	#include <time.h>
39		#include <sys/vfs.h>
40		#include <mntent.h>
41		#include "tools.h"
42	<	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
42	>	#ifdef CYGWIN
43	>	#define VALID_FS_TYPES {"user"}
44	>	#else
45	>	#define VALID_FS_TYPES {"adfs", "affs", "befs", "bfs", "efs", "ext2", \
46	>	"ext3", "vxfs", "hfs", "hfsplus", "hpfs", "jffs", \
47	>	"jffs2", "minix", "msdos", "ntfs", "qnx4", "ramfs", \
48	>	"rootfs", "reiserfs", "sysv", "v7", "udf", "ufs", \
49	>	"umsdos", "vfat", "xfs", "jfs"}
50		#endif
51	+	#endif
52
53	+	#ifdef ALLBSD
54	+	#include <sys/param.h>
55	+	#include <sys/ucred.h>
56	+	#include <sys/mount.h>
57	+	#endif
58	+	#ifdef FREEBSD
59	+	#include <sys/dkstat.h>
60	+	#include <devstat.h>
61	+	#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
62	+	"ufs", "mfs"}
63	+	#endif
64	+	#ifdef NETBSD
65	+	#include <sys/param.h>
66	+	#include <sys/sysctl.h>
67	+	#include <sys/disk.h>
68	+	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
69	+	"ntfs"}
70	+	#endif
71	+
72		#define START_VAL 1
73
74		char *copy_string(char *orig_ptr, const char *newtext){
#	Line 76 | Line 103 | disk_stat_t *get_disk_stats(int *entries){
103		char *fs_types[] = VALID_FS_TYPES;
104		int x, valid_type;
105		int num_disks=0;
106	+	#if defined(LINUX) || defined (SOLARIS)
107		FILE *f;
108	+	#endif
109
110		disk_stat_t *disk_ptr;
111
112		#ifdef SOLARIS
113	<	struct mnttab *mp;
113	>	struct mnttab mp;
114		struct statvfs fs;
115		#endif
116		#ifdef LINUX
117		struct mntent *mp;
118		struct statfs fs;
119		#endif
120	+	#ifdef ALLBSD
121	+	int nummnt;
122	+	struct statfs *mp;
123	+	#endif
124
125		if(watermark==-1){
126		disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
#	Line 97 | Line 130 | disk_stat_t *get_disk_stats(int *entries){
130		watermark=START_VAL;
131		init_disk_stat(0, watermark-1, disk_stats);
132		}
133	+	#ifdef ALLBSD
134	+	nummnt=getmntinfo(&mp , MNT_LOCAL);
135	+	if (nummnt<=0){
136	+	return NULL;
137	+	}
138	+	for(;nummnt--; mp++){
139	+	valid_type=0;
140	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
141	+	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
142	+	valid_type=1;
143	+	break;
144	+	}
145	+	}
146	+	#endif
147	+
148		#ifdef LINUX
149		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
150		return NULL;
#	Line 146 | Line 194 | disk_stat_t *get_disk_stats(int *entries){
194		}
195
196		disk_ptr=disk_stats+num_disks;
197	+	#ifdef ALLBSD
198	+	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
199	+	return NULL;
200	+	}
201	+
202	+	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
203	+	return NULL;
204	+	}
205	+
206	+	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
207	+	return NULL;
208	+	}
209	+
210	+	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
211	+	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
212	+	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
213	+
214	+	disk_ptr->total_inodes=(long long)mp->f_files;
215	+	disk_ptr->free_inodes=(long long)mp->f_ffree;
216	+	/* Freebsd doesn't have a "available" inodes */
217	+	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
218	+	#endif
219		#ifdef LINUX
220		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
221		return NULL;
#	Line 200 | Line 270 | disk_stat_t *get_disk_stats(int *entries){
270
271		*entries=num_disks;
272
273	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
273	>	/* If this fails, there is very little i can do about it, so
274	>	I'll ignore it :) */
275	>	#if defined(LINUX)
276	>	endmntent(f);
277	>	#endif
278	>	#if defined(SOLARIS)
279		fclose(f);
280	+	#endif
281
282		return disk_stats;
283
#	Line 244 | Line 320 | diskio_stat_t *diskio_stat_malloc(int needed_entries,
320		static diskio_stat_t *diskio_stats=NULL;
321		static int num_diskio=0;
322
323	+	#ifdef LINUX
324	+	typedef struct {
325	+	int major;
326	+	int minor;
327	+	} partition;
328	+	#endif
329	+
330		diskio_stat_t *get_diskio_stats(int *entries){
331
332		static int sizeof_diskio_stats=0;
333	+	#ifndef LINUX
334		diskio_stat_t *diskio_stats_ptr;
335	+	#endif
336
337		#ifdef SOLARIS
338		kstat_ctl_t *kc;
#	Line 258 | Line 343 | diskio_stat_t *get_diskio_stats(int *entries){
343		FILE *f;
344		char *line_ptr;
345		int major, minor;
346	<	char dev_letter;
346	>	int has_pp_stats = 1;
347	>	static partition *parts = NULL;
348	>	static int alloc_parts = 0;
349	>	int i, n;
350	>	time_t now;
351	>	const char *format;
352		#endif
353	+	#ifdef FREEBSD
354	+	static struct statinfo stats;
355	+	static int stats_init = 0;
356	+	int counter;
357	+	struct device_selection *dev_sel = NULL;
358	+	int n_selected, n_selections;
359	+	long sel_gen;
360	+	struct devstat *dev_ptr;
361	+	#endif
362	+	#ifdef NETBSD
363	+	struct disk_sysctl *stats;
364	+	int num_disks, i;
365	+	int mib[3];
366	+	size_t size;
367	+	#endif
368	+
369		num_diskio=0;
370
371	+	#ifdef NETBSD
372	+	mib[0] = CTL_HW;
373	+	mib[1] = HW_DISKSTATS;
374	+	mib[2] = sizeof(struct disk_sysctl);
375	+
376	+	if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
377	+	return NULL;
378	+	}
379	+	num_disks = size / sizeof(struct disk_sysctl);
380	+
381	+	stats = malloc(size);
382	+	if (stats == NULL) {
383	+	return NULL;
384	+	}
385	+
386	+	if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) {
387	+	return NULL;
388	+	}
389	+
390	+	for (i = 0; i < num_disks; i++) {
391	+	u_int64_t rbytes, wbytes;
392	+
393	+	#ifdef HAVE_DK_RBYTES
394	+	rbytes = stats[i].dk_rbytes;
395	+	wbytes = stats[i].dk_wbytes;
396	+	#else
397	+	/* Before 1.7, NetBSD merged reads and writes. */
398	+	rbytes = wbytes = stats[i].dk_bytes;
399	+	#endif
400	+
401	+	/* Don't keep stats for disks that have never been used. */
402	+	if (rbytes == 0 && wbytes == 0) {
403	+	continue;
404	+	}
405	+
406	+	diskio_stats = diskio_stat_malloc(num_diskio + 1,
407	+	&sizeof_diskio_stats,
408	+	diskio_stats);
409	+	if (diskio_stats == NULL) {
410	+	return NULL;
411	+	}
412	+	diskio_stats_ptr = diskio_stats + num_diskio;
413	+
414	+	diskio_stats_ptr->read_bytes = rbytes;
415	+	diskio_stats_ptr->write_bytes = wbytes;
416	+	if (diskio_stats_ptr->disk_name != NULL) {
417	+	free(diskio_stats_ptr->disk_name);
418	+	}
419	+	diskio_stats_ptr->disk_name = strdup(stats[i].dk_name);
420	+	diskio_stats_ptr->systime = time(NULL);
421	+
422	+	num_diskio++;
423	+	}
424	+
425	+	free(stats);
426	+	#endif
427	+
428	+	#ifdef FREEBSD
429	+	if (!stats_init) {
430	+	stats.dinfo=malloc(sizeof(struct devinfo));
431	+	if(stats.dinfo==NULL) return NULL;
432	+	bzero(stats.dinfo, sizeof(struct devinfo));
433	+	stats_init = 1;
434	+	}
435	+	#ifdef FREEBSD5
436	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
437	+	/* Not aware of a get all devices, so i said 999. If we ever
438	+	* find a machine with more than 999 disks, then i'll change
439	+	* this number :)
440	+	*/
441	+	if (devstat_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;
442	+	#else
443	+	if ((getdevs(&stats)) < 0) return NULL;
444	+	/* Not aware of a get all devices, so i said 999. If we ever
445	+	* find a machine with more than 999 disks, then i'll change
446	+	* this number :)
447	+	*/
448	+	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;
449	+	#endif
450	+
451	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
452	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
453	+
454	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
455	+	* devices.. like mem, proc.. and also doesn't report floppy
456	+	* drives etc unless they are doing stuff :)
457	+	*/
458	+	#ifdef FREEBSD5
459	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
460	+	#else
461	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
462	+	#endif
463	+	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
464	+	return NULL;
465	+	}
466	+	diskio_stats_ptr=diskio_stats+num_diskio;
467	+
468	+	#ifdef FREEBSD5
469	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
470	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
471	+	#else
472	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
473	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
474	+	#endif
475	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
476	+	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
477	+	diskio_stats_ptr->systime=time(NULL);
478	+
479	+	num_diskio++;
480	+	}
481	+	free(dev_sel);
482	+
483	+	#endif
484		#ifdef SOLARIS
485		if ((kc = kstat_open()) == NULL) {
486		return NULL;
#	Line 289 | Line 508 | diskio_stat_t *get_diskio_stats(int *entries){
508		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
509
510		diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
511	+	diskio_stats_ptr->systime=time(NULL);
512		num_diskio++;
513		}
514		}
#	Line 297 | Line 517 | diskio_stat_t *get_diskio_stats(int *entries){
517		#endif
518
519		#ifdef LINUX
520	<	f=fopen("/proc/stat", "r");
521	<	if(f==NULL){
522	<	*entries=0;
523	<	fclose(f);
524	<	return NULL;
520	>	num_diskio = 0;
521	>	n = 0;
522	>
523	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
524	>	have statistics in here too, so we can use those directly.
525	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
526	>	the same format. */
527	>
528	>	f = fopen("/proc/diskstats", "r");
529	>	format = " %d %d %19s %*d %*d %lld %*d %*d %*d %lld";
530	>	if (f == NULL) {
531	>	f = fopen("/proc/partitions", "r");
532	>	format = " %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld";
533		}
534	<	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
535	<	*entries=0;
308	<	fclose(f);
309	<	return NULL;
310	<	}
311	<	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
312	<	line_ptr++;
313	<	if(*line_ptr=='\0'){
314	<	break;
315	<	}
316	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
317	<	fclose(f);
318	<	*entries=0;
319	<	return NULL;
320	<	}
321	<	diskio_stats_ptr=diskio_stats+num_diskio;
534	>	if (f == NULL) goto out;
535	>	now = time(NULL);
536
537	+	while ((line_ptr = f_read_line(f, "")) != NULL) {
538	+	char name[20];
539	+	char *s;
540	+	long long rsect, wsect;
541
542	<	if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \
543	<	&major, \
544	<	&minor, \
545	<	&diskio_stats_ptr->read_bytes, \
546	<	&diskio_stats_ptr->write_bytes))!=4) {
547	<	continue;
542	>	int nr = sscanf(line_ptr, format,
543	>	&major, &minor, name, &rsect, &wsect);
544	>	if (nr < 3) continue;
545	>
546	>	/* Skip device names ending in numbers, since they're
547	>	partitions. */
548	>	s = name;
549	>	while (*s != '\0') s++;
550	>	--s;
551	>	if (*s >= '0' && *s <= '9') continue;
552	>
553	>	if (nr < 5) {
554	>	has_pp_stats = 0;
555	>	rsect = 0;
556	>	wsect = 0;
557		}
558
559	<	/* We read the number of blocks. Blocks are stored in 512 bytes */
560	<	diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
561	<	diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;
559	>	diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
560	>	diskio_stats);
561	>	if (diskio_stats == NULL) goto out;
562	>	if (n >= alloc_parts) {
563	>	alloc_parts += 16;
564	>	parts = realloc(parts, alloc_parts * sizeof *parts);
565	>	if (parts == NULL) {
566	>	alloc_parts = 0;
567	>	goto out;
568	>	}
569	>	}
570
571	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
571	>	if (diskio_stats[n].disk_name != NULL)
572	>	free(diskio_stats[n].disk_name);
573	>	diskio_stats[n].disk_name = strdup(name);
574	>	diskio_stats[n].read_bytes = rsect * 512;
575	>	diskio_stats[n].write_bytes = wsect * 512;
576	>	diskio_stats[n].systime = now;
577	>	parts[n].major = major;
578	>	parts[n].minor = minor;
579
580	<	switch(major){
581	<	case 2:
340	<	if(minor==0){
341	<	diskio_stats_ptr->disk_name=strdup("fd0");
342	<	}
343	<	break;
580	>	n++;
581	>	}
582
583	<	case 3:
584	<	if(minor==0){
585	<	diskio_stats_ptr->disk_name=strdup("hda");
348	<	}else{
349	<	diskio_stats_ptr->disk_name=strdup("hdb");
350	<	}
351	<	break;
583	>	if (!has_pp_stats) {
584	>	/* This is an older kernel without stats in /proc/partitions.
585	>	Read what we can from /proc/stat instead. */
586
587	+	f = fopen("/proc/stat", "r");
588	+	if (f == NULL) goto out;
589	+	now = time(NULL);
590	+
591	+	line_ptr = f_read_line(f, "disk_io:");
592	+	if (line_ptr == NULL) goto out;
593	+
594	+	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
595	+	long long rsect, wsect;
596	+
597	+	if (*++line_ptr == '\0') break;
598	+
599	+	if((sscanf(line_ptr,
600	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
601	+	&major, &minor, &rsect, &wsect)) != 4) {
602	+	continue;
603	+	}
604	+
605	+	/* Find the corresponding device from earlier.
606	+	Just to add to the fun, "minor" is actually the disk
607	+	number, not the device minor, so we need to figure
608	+	out the real minor number based on the major!
609	+	This list is not exhaustive; if you're running
610	+	an older kernel you probably don't have fancy
611	+	I2O hardware anyway... */
612	+	switch (major) {
613	+	case 3:
614	+	case 21:
615		case 22:
616	<	if(minor==0){
617	<	diskio_stats_ptr->disk_name=strdup("hdc");
618	<	}else{
619	<	diskio_stats_ptr->disk_name=strdup("hdd");
620	<	}
616	>	case 33:
617	>	case 34:
618	>	case 36:
619	>	case 56:
620	>	case 57:
621	>	case 88:
622	>	case 89:
623	>	case 90:
624	>	case 91:
625	>	minor *= 64;
626		break;
627	<	case 8:
628	<	dev_letter='a'+(minor/16);
362	<	diskio_stats_ptr->disk_name=malloc(4);
363	<	snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter);
627	>	case 9:
628	>	case 43:
629		break;
630		default:
631	<	/* I have no idea what it is then :) */
367	<	diskio_stats_ptr->disk_name=malloc(16);
368	<	snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor);
631	>	minor *= 16;
632		break;
633	<	}
633	>	}
634	>	for (i = 0; i < n; i++) {
635	>	if (major == parts[i].major
636	>	&& minor == parts[i].minor)
637	>	break;
638	>	}
639	>	if (i == n) continue;
640
641	<	num_diskio++;
641	>	/* We read the number of blocks. Blocks are stored in
642	>	512 bytes */
643	>	diskio_stats[i].read_bytes = rsect * 512;
644	>	diskio_stats[i].write_bytes = wsect * 512;
645	>	diskio_stats[i].systime = now;
646	>	}
647		}
648	+
649	+	num_diskio = n;
650	+	out:
651	+	if (f != NULL) fclose(f);
652
653		#endif
654		*entries=num_diskio;

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