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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 1.9 by pajs, Tue Mar 4 12:55:14 2003 UTC vs.
Revision 1.38 by ats, Fri Oct 24 17:46:44 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	<	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
41	>	#include "tools.h"
42	>	#define VALID_FS_TYPES {"adfs", "affs", "befs", "bfs", "efs", "ext2", \
43	>	"ext3", "vxfs", "hfs", "hfsplus", "hpfs", "jffs", \
44	>	"jffs2", "minix", "msdos", "ntfs", "qnx4", "ramfs", \
45	>	"rootfs", "reiserfs", "sysv", "v7", "udf", "ufs", \
46	>	"umsdos", "vfat", "xfs", "jfs"}
47		#endif
48
49	+	#ifdef ALLBSD
50	+	#include <sys/param.h>
51	+	#include <sys/ucred.h>
52	+	#include <sys/mount.h>
53	+	#endif
54	+	#ifdef FREEBSD
55	+	#include <sys/dkstat.h>
56	+	#include <devstat.h>
57	+	#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
58	+	"ufs", "mfs"}
59	+	#endif
60	+	#ifdef NETBSD
61	+	#include <sys/param.h>
62	+	#include <sys/sysctl.h>
63	+	#include <sys/disk.h>
64	+	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
65	+	"ntfs"}
66	+	#endif
67	+
68		#define START_VAL 1
69
70		char *copy_string(char *orig_ptr, const char *newtext){
#	Line 75 | Line 99 | disk_stat_t *get_disk_stats(int *entries){
99		char *fs_types[] = VALID_FS_TYPES;
100		int x, valid_type;
101		int num_disks=0;
102	+	#if defined(LINUX) || defined (SOLARIS)
103		FILE *f;
104	+	#endif
105
106		disk_stat_t *disk_ptr;
107
108		#ifdef SOLARIS
109	<	struct mnttab *mp;
109	>	struct mnttab mp;
110		struct statvfs fs;
111		#endif
112		#ifdef LINUX
113		struct mntent *mp;
114		struct statfs fs;
115		#endif
116	+	#ifdef ALLBSD
117	+	int nummnt;
118	+	struct statfs *mp;
119	+	#endif
120
121		if(watermark==-1){
122		disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
#	Line 96 | Line 126 | disk_stat_t *get_disk_stats(int *entries){
126		watermark=START_VAL;
127		init_disk_stat(0, watermark-1, disk_stats);
128		}
129	+	#ifdef ALLBSD
130	+	nummnt=getmntinfo(&mp , MNT_LOCAL);
131	+	if (nummnt<=0){
132	+	return NULL;
133	+	}
134	+	for(;nummnt--; mp++){
135	+	valid_type=0;
136	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
137	+	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
138	+	valid_type=1;
139	+	break;
140	+	}
141	+	}
142	+	#endif
143	+
144		#ifdef LINUX
145		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
146		return NULL;
#	Line 145 | Line 190 | disk_stat_t *get_disk_stats(int *entries){
190		}
191
192		disk_ptr=disk_stats+num_disks;
193	+	#ifdef ALLBSD
194	+	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
195	+	return NULL;
196	+	}
197	+
198	+	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
199	+	return NULL;
200	+	}
201	+
202	+	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
203	+	return NULL;
204	+	}
205	+
206	+	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
207	+	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
208	+	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
209	+
210	+	disk_ptr->total_inodes=(long long)mp->f_files;
211	+	disk_ptr->free_inodes=(long long)mp->f_ffree;
212	+	/* Freebsd doesn't have a "available" inodes */
213	+	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
214	+	#endif
215		#ifdef LINUX
216		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
217		return NULL;
#	Line 200 | Line 267 | disk_stat_t *get_disk_stats(int *entries){
267		*entries=num_disks;
268
269		/* If this fails, there is very little i can do about it, so i'll ignore it :) */
270	+	#if defined(LINUX) || defined(SOLARIS)
271		fclose(f);
272	+	#endif
273
274		return disk_stats;
275
276		}
208	–	#ifdef SOLARIS
277		void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
278
279		for(diskio_stats+=start; start<end; start++){
#	Line 244 | Line 312 | diskio_stat_t *diskio_stat_malloc(int needed_entries,
312		static diskio_stat_t *diskio_stats=NULL;
313		static int num_diskio=0;
314
315	+	#ifdef LINUX
316	+	typedef struct {
317	+	int major;
318	+	int minor;
319	+	} partition;
320	+	#endif
321	+
322		diskio_stat_t *get_diskio_stats(int *entries){
323
324		static int sizeof_diskio_stats=0;
325	+	#ifndef LINUX
326		diskio_stat_t *diskio_stats_ptr;
327	+	#endif
328
329	+	#ifdef SOLARIS
330		kstat_ctl_t *kc;
331		kstat_t *ksp;
332		kstat_io_t kios;
333	+	#endif
334	+	#ifdef LINUX
335	+	FILE *f;
336	+	char *line_ptr;
337	+	int major, minor;
338	+	int has_pp_stats = 1;
339	+	static partition *parts = NULL;
340	+	static int alloc_parts = 0;
341	+	int i, n;
342	+	time_t now;
343	+	const char *format;
344	+	#endif
345	+	#ifdef FREEBSD
346	+	static struct statinfo stats;
347	+	static int stats_init = 0;
348	+	int counter;
349	+	struct device_selection *dev_sel = NULL;
350	+	int n_selected, n_selections;
351	+	long sel_gen;
352	+	struct devstat *dev_ptr;
353	+	#endif
354	+	#ifdef NETBSD
355	+	struct disk_sysctl *stats;
356	+	int num_disks, i;
357	+	int mib[3];
358	+	size_t size;
359	+	#endif
360
361	+	num_diskio=0;
362	+
363	+	#ifdef NETBSD
364	+	mib[0] = CTL_HW;
365	+	mib[1] = HW_DISKSTATS;
366	+	mib[2] = sizeof(struct disk_sysctl);
367	+
368	+	if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
369	+	return NULL;
370	+	}
371	+	num_disks = size / sizeof(struct disk_sysctl);
372	+
373	+	stats = malloc(size);
374	+	if (stats == NULL) {
375	+	return NULL;
376	+	}
377	+
378	+	if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) {
379	+	return NULL;
380	+	}
381	+
382	+	for (i = 0; i < num_disks; i++) {
383	+	u_int64_t rbytes, wbytes;
384	+
385	+	#ifdef HAVE_DK_RBYTES
386	+	rbytes = stats[i].dk_rbytes;
387	+	wbytes = stats[i].dk_wbytes;
388	+	#else
389	+	/* Before 1.7, NetBSD merged reads and writes. */
390	+	rbytes = wbytes = stats[i].dk_bytes;
391	+	#endif
392	+
393	+	/* Don't keep stats for disks that have never been used. */
394	+	if (rbytes == 0 && wbytes == 0) {
395	+	continue;
396	+	}
397	+
398	+	diskio_stats = diskio_stat_malloc(num_diskio + 1,
399	+	&sizeof_diskio_stats,
400	+	diskio_stats);
401	+	if (diskio_stats == NULL) {
402	+	return NULL;
403	+	}
404	+	diskio_stats_ptr = diskio_stats + num_diskio;
405	+
406	+	diskio_stats_ptr->read_bytes = rbytes;
407	+	diskio_stats_ptr->write_bytes = wbytes;
408	+	if (diskio_stats_ptr->disk_name != NULL) {
409	+	free(diskio_stats_ptr->disk_name);
410	+	}
411	+	diskio_stats_ptr->disk_name = strdup(stats[i].dk_name);
412	+	diskio_stats_ptr->systime = time(NULL);
413	+
414	+	num_diskio++;
415	+	}
416	+
417	+	free(stats);
418	+	#endif
419	+
420	+	#ifdef FREEBSD
421	+	if (!stats_init) {
422	+	stats.dinfo=malloc(sizeof(struct devinfo));
423	+	if(stats.dinfo==NULL) return NULL;
424	+	bzero(stats.dinfo, sizeof(struct devinfo));
425	+	stats_init = 1;
426	+	}
427	+	#ifdef FREEBSD5
428	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
429	+	/* Not aware of a get all devices, so i said 999. If we ever
430	+	* find a machine with more than 999 disks, then i'll change
431	+	* this number :)
432	+	*/
433	+	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;
434	+	#else
435	+	if ((getdevs(&stats)) < 0) return NULL;
436	+	/* Not aware of a get all devices, so i said 999. If we ever
437	+	* find a machine with more than 999 disks, then i'll change
438	+	* this number :)
439	+	*/
440	+	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;
441	+	#endif
442	+
443	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
444	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
445	+
446	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
447	+	* devices.. like mem, proc.. and also doesn't report floppy
448	+	* drives etc unless they are doing stuff :)
449	+	*/
450	+	#ifdef FREEBSD5
451	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
452	+	#else
453	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
454	+	#endif
455	+	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
456	+	return NULL;
457	+	}
458	+	diskio_stats_ptr=diskio_stats+num_diskio;
459	+
460	+	#ifdef FREEBSD5
461	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
462	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
463	+	#else
464	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
465	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
466	+	#endif
467	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
468	+	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
469	+	diskio_stats_ptr->systime=time(NULL);
470	+
471	+	num_diskio++;
472	+	}
473	+	free(dev_sel);
474	+
475	+	#endif
476	+	#ifdef SOLARIS
477		if ((kc = kstat_open()) == NULL) {
478		return NULL;
479		}
480
260	–	num_diskio=0;
261	–
481		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
482		if (!strcmp(ksp->ks_class, "disk")) {
483
#	Line 281 | Line 500 | diskio_stat_t *get_diskio_stats(int *entries){
500		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
501
502		diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
503	+	diskio_stats_ptr->systime=time(NULL);
504		num_diskio++;
505		}
506		}
507
508		kstat_close(kc);
509	+	#endif
510
511	+	#ifdef LINUX
512	+	num_diskio = 0;
513	+	n = 0;
514	+
515	+	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
516	+	have statistics in here too, so we can use those directly.
517	+	2.6 kernels have /proc/diskstats instead with almost (but not quite)
518	+	the same format. */
519	+
520	+	f = fopen("/proc/diskstats", "r");
521	+	format = " %d %d %19s %*d %*d %lld %*d %*d %*d %lld";
522	+	if (f == NULL) {
523	+	f = fopen("/proc/partitions", "r");
524	+	format = " %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld";
525	+	}
526	+	if (f == NULL) goto out;
527	+	now = time(NULL);
528	+
529	+	while ((line_ptr = f_read_line(f, "")) != NULL) {
530	+	char name[20];
531	+	char *s;
532	+	long long rsect, wsect;
533	+
534	+	int nr = sscanf(line_ptr, format,
535	+	&major, &minor, name, &rsect, &wsect);
536	+	if (nr < 3) continue;
537	+
538	+	/* Skip device names ending in numbers, since they're
539	+	partitions. */
540	+	s = name;
541	+	while (*s != '\0') s++;
542	+	--s;
543	+	if (*s >= '0' && *s <= '9') continue;
544	+
545	+	if (nr < 5) {
546	+	has_pp_stats = 0;
547	+	rsect = 0;
548	+	wsect = 0;
549	+	}
550	+
551	+	diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
552	+	diskio_stats);
553	+	if (diskio_stats == NULL) goto out;
554	+	if (n >= alloc_parts) {
555	+	alloc_parts += 16;
556	+	parts = realloc(parts, alloc_parts * sizeof *parts);
557	+	if (parts == NULL) {
558	+	alloc_parts = 0;
559	+	goto out;
560	+	}
561	+	}
562	+
563	+	if (diskio_stats[n].disk_name != NULL)
564	+	free(diskio_stats[n].disk_name);
565	+	diskio_stats[n].disk_name = strdup(name);
566	+	diskio_stats[n].read_bytes = rsect * 512;
567	+	diskio_stats[n].write_bytes = wsect * 512;
568	+	diskio_stats[n].systime = now;
569	+	parts[n].major = major;
570	+	parts[n].minor = minor;
571	+
572	+	n++;
573	+	}
574	+
575	+	if (!has_pp_stats) {
576	+	/* This is an older kernel without stats in /proc/partitions.
577	+	Read what we can from /proc/stat instead. */
578	+
579	+	f = fopen("/proc/stat", "r");
580	+	if (f == NULL) goto out;
581	+	now = time(NULL);
582	+
583	+	line_ptr = f_read_line(f, "disk_io:");
584	+	if (line_ptr == NULL) goto out;
585	+
586	+	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
587	+	long long rsect, wsect;
588	+
589	+	if (*++line_ptr == '\0') break;
590	+
591	+	if((sscanf(line_ptr,
592	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
593	+	&major, &minor, &rsect, &wsect)) != 4) {
594	+	continue;
595	+	}
596	+
597	+	/* Find the corresponding device from earlier.
598	+	Just to add to the fun, "minor" is actually the disk
599	+	number, not the device minor, so we need to figure
600	+	out the real minor number based on the major!
601	+	This list is not exhaustive; if you're running
602	+	an older kernel you probably don't have fancy
603	+	I2O hardware anyway... */
604	+	switch (major) {
605	+	case 3:
606	+	case 21:
607	+	case 22:
608	+	case 33:
609	+	case 34:
610	+	case 36:
611	+	case 56:
612	+	case 57:
613	+	case 88:
614	+	case 89:
615	+	case 90:
616	+	case 91:
617	+	minor *= 64;
618	+	break;
619	+	case 9:
620	+	case 43:
621	+	break;
622	+	default:
623	+	minor *= 16;
624	+	break;
625	+	}
626	+	for (i = 0; i < n; i++) {
627	+	if (major == parts[i].major
628	+	&& minor == parts[i].minor)
629	+	break;
630	+	}
631	+	if (i == n) continue;
632	+
633	+	/* We read the number of blocks. Blocks are stored in
634	+	512 bytes */
635	+	diskio_stats[i].read_bytes = rsect * 512;
636	+	diskio_stats[i].write_bytes = wsect * 512;
637	+	diskio_stats[i].systime = now;
638	+	}
639	+	}
640	+
641	+	num_diskio = n;
642	+	out:
643	+	if (f != NULL) fclose(f);
644	+
645	+	#endif
646		*entries=num_diskio;
647
648		return diskio_stats;
#	Line 357 | Line 713 | diskio_stat_t *get_diskio_stats_diff(int *entries){
713		*entries=sizeof_diskio_stats_diff;
714		return diskio_stats_diff;
715		}
360	–	#endif

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