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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 1.14 by pajs, Tue Mar 11 12:57:07 2003 UTC vs.
Revision 1.35 by ats, Sun Oct 19 21:06:55 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	>	#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 {"ufs", "mfs"}
58	+	#endif
59	+	#ifdef NETBSD
60	+	#include <sys/param.h>
61	+	#include <sys/sysctl.h>
62	+	#include <sys/disk.h>
63	+	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
64	+	"ntfs"}
65	+	#endif
66	+
67		#define START_VAL 1
68
69		char *copy_string(char *orig_ptr, const char *newtext){
#	Line 76 | Line 98 | disk_stat_t *get_disk_stats(int *entries){
98		char *fs_types[] = VALID_FS_TYPES;
99		int x, valid_type;
100		int num_disks=0;
101	+	#if defined(LINUX) || defined (SOLARIS)
102		FILE *f;
103	+	#endif
104
105		disk_stat_t *disk_ptr;
106
#	Line 88 | Line 112 | disk_stat_t *get_disk_stats(int *entries){
112		struct mntent *mp;
113		struct statfs fs;
114		#endif
115	+	#ifdef ALLBSD
116	+	int nummnt;
117	+	struct statfs *mp;
118	+	#endif
119
120		if(watermark==-1){
121		disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
#	Line 97 | Line 125 | disk_stat_t *get_disk_stats(int *entries){
125		watermark=START_VAL;
126		init_disk_stat(0, watermark-1, disk_stats);
127		}
128	+	#ifdef ALLBSD
129	+	nummnt=getmntinfo(&mp , MNT_LOCAL);
130	+	if (nummnt<=0){
131	+	return NULL;
132	+	}
133	+	for(;nummnt--; mp++){
134	+	valid_type=0;
135	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
136	+	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
137	+	valid_type=1;
138	+	break;
139	+	}
140	+	}
141	+	#endif
142	+
143		#ifdef LINUX
144		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
145		return NULL;
#	Line 146 | Line 189 | disk_stat_t *get_disk_stats(int *entries){
189		}
190
191		disk_ptr=disk_stats+num_disks;
192	+	#ifdef ALLBSD
193	+	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
194	+	return NULL;
195	+	}
196	+
197	+	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
198	+	return NULL;
199	+	}
200	+
201	+	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
202	+	return NULL;
203	+	}
204	+
205	+	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
206	+	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
207	+	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
208	+
209	+	disk_ptr->total_inodes=(long long)mp->f_files;
210	+	disk_ptr->free_inodes=(long long)mp->f_ffree;
211	+	/* Freebsd doesn't have a "available" inodes */
212	+	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
213	+	#endif
214		#ifdef LINUX
215		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
216		return NULL;
#	Line 201 | Line 266 | disk_stat_t *get_disk_stats(int *entries){
266		*entries=num_disks;
267
268		/* If this fails, there is very little i can do about it, so i'll ignore it :) */
269	+	#if defined(LINUX) || defined(SOLARIS)
270		fclose(f);
271	+	#endif
272
273		return disk_stats;
274
#	Line 244 | Line 311 | diskio_stat_t *diskio_stat_malloc(int needed_entries,
311		static diskio_stat_t *diskio_stats=NULL;
312		static int num_diskio=0;
313
314	+	#ifdef LINUX
315	+	typedef struct {
316	+	int major;
317	+	int minor;
318	+	} partition;
319	+	#endif
320	+
321		diskio_stat_t *get_diskio_stats(int *entries){
322
323		static int sizeof_diskio_stats=0;
#	Line 259 | Line 333 | diskio_stat_t *get_diskio_stats(int *entries){
333		char *line_ptr;
334		int major, minor;
335		char dev_letter;
336	+	int has_pp_stats = 1;
337	+	static partition *parts = NULL;
338	+	static int alloc_parts = 0;
339	+	int i, n;
340	+	time_t now;
341		#endif
342	+	#ifdef FREEBSD
343	+	static struct statinfo stats;
344	+	static int stats_init = 0;
345	+	int counter;
346	+	struct device_selection *dev_sel = NULL;
347	+	int n_selected, n_selections;
348	+	long sel_gen;
349	+	struct devstat *dev_ptr;
350	+	#endif
351	+	#ifdef NETBSD
352	+	struct disk_sysctl *stats;
353	+	int num_disks, i;
354	+	int mib[3];
355	+	size_t size;
356	+	#endif
357	+
358		num_diskio=0;
359
360	+	#ifdef NETBSD
361	+	mib[0] = CTL_HW;
362	+	mib[1] = HW_DISKSTATS;
363	+	mib[2] = sizeof(struct disk_sysctl);
364	+
365	+	if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
366	+	return NULL;
367	+	}
368	+	num_disks = size / sizeof(struct disk_sysctl);
369	+
370	+	stats = malloc(size);
371	+	if (stats == NULL) {
372	+	return NULL;
373	+	}
374	+
375	+	if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) {
376	+	return NULL;
377	+	}
378	+
379	+	for (i = 0; i < num_disks; i++) {
380	+	u_int64_t rbytes, wbytes;
381	+
382	+	#ifdef HAVE_DK_RBYTES
383	+	rbytes = stats[i].dk_rbytes;
384	+	wbytes = stats[i].dk_wbytes;
385	+	#else
386	+	/* Before 1.6.1, NetBSD merged reads and writes. */
387	+	rbytes = wbytes = stats[i].dk_bytes;
388	+	#endif
389	+
390	+	/* Don't keep stats for disks that have never been used. */
391	+	if (rbytes == 0 && wbytes == 0) {
392	+	continue;
393	+	}
394	+
395	+	diskio_stats = diskio_stat_malloc(num_diskio + 1,
396	+	&sizeof_diskio_stats,
397	+	diskio_stats);
398	+	if (diskio_stats == NULL) {
399	+	return NULL;
400	+	}
401	+	diskio_stats_ptr = diskio_stats + num_diskio;
402	+
403	+	diskio_stats_ptr->read_bytes = rbytes;
404	+	diskio_stats_ptr->write_bytes = wbytes;
405	+	if (diskio_stats_ptr->disk_name != NULL) {
406	+	free(diskio_stats_ptr->disk_name);
407	+	}
408	+	diskio_stats_ptr->disk_name = strdup(stats[i].dk_name);
409	+	diskio_stats_ptr->systime = time(NULL);
410	+
411	+	num_diskio++;
412	+	}
413	+
414	+	free(stats);
415	+	#endif
416	+
417	+	#ifdef FREEBSD
418	+	if (!stats_init) {
419	+	stats.dinfo=malloc(sizeof(struct devinfo));
420	+	if(stats.dinfo==NULL) return NULL;
421	+	bzero(stats.dinfo, sizeof(struct devinfo));
422	+	stats_init = 1;
423	+	}
424	+	#ifdef FREEBSD5
425	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
426	+	/* Not aware of a get all devices, so i said 999. If we ever
427	+	* find a machine with more than 999 disks, then i'll change
428	+	* this number :)
429	+	*/
430	+	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;
431	+	#else
432	+	if ((getdevs(&stats)) < 0) return NULL;
433	+	/* Not aware of a get all devices, so i said 999. If we ever
434	+	* find a machine with more than 999 disks, then i'll change
435	+	* this number :)
436	+	*/
437	+	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;
438	+	#endif
439	+
440	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
441	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
442	+
443	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
444	+	* devices.. like mem, proc.. and also doesn't report floppy
445	+	* drives etc unless they are doing stuff :)
446	+	*/
447	+	#ifdef FREEBSD5
448	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
449	+	#else
450	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
451	+	#endif
452	+	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
453	+	return NULL;
454	+	}
455	+	diskio_stats_ptr=diskio_stats+num_diskio;
456	+
457	+	#ifdef FREEBSD5
458	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
459	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
460	+	#else
461	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
462	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
463	+	#endif
464	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
465	+	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
466	+	diskio_stats_ptr->systime=time(NULL);
467	+
468	+	num_diskio++;
469	+	}
470	+	free(dev_sel);
471	+
472	+	#endif
473		#ifdef SOLARIS
474		if ((kc = kstat_open()) == NULL) {
475		return NULL;
#	Line 298 | Line 506 | diskio_stat_t *get_diskio_stats(int *entries){
506		#endif
507
508		#ifdef LINUX
509	<	f=fopen("/proc/stat", "r");
510	<	if(f==NULL){
511	<	*entries=0;
512	<	fclose(f);
513	<	return NULL;
514	<	}
515	<	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
516	<	*entries=0;
517	<	fclose(f);
518	<	return NULL;
519	<	}
520	<	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
521	<	line_ptr++;
522	<	if(*line_ptr=='\0'){
523	<	break;
509	>	num_diskio = 0;
510	>	n = 0;
511	>
512	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
513	>	have statistics in here too, so we can use those directly. */
514	>
515	>	f = fopen("/proc/partitions", "r");
516	>	if (f == NULL) goto out;
517	>	now = time(NULL);
518	>
519	>	while ((line_ptr = f_read_line(f, "")) != NULL) {
520	>	char name[20];
521	>	char *s;
522	>	long long rsect, wsect;
523	>
524	>	int nr = sscanf(line_ptr,
525	>	" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld",
526	>	&major, &minor, name, &rsect, &wsect);
527	>	if (nr < 3) continue;
528	>	if (nr < 5) {
529	>	has_pp_stats = 0;
530	>	rsect = 0;
531	>	wsect = 0;
532		}
317	–	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
318	–	fclose(f);
319	–	*entries=0;
320	–	return NULL;
321	–	}
322	–	diskio_stats_ptr=diskio_stats+num_diskio;
533
534	+	/* Skip device names ending in numbers, since they're
535	+	partitions. */
536	+	s = name;
537	+	while (*s != '\0') s++;
538	+	--s;
539	+	if (*s >= '0' && *s <= '9') continue;
540
541	<	if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \
542	<	&major, \
543	<	&minor, \
544	<	&diskio_stats_ptr->read_bytes, \
545	<	&diskio_stats_ptr->write_bytes))!=4) {
546	<	continue;
541	>	diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
542	>	diskio_stats);
543	>	if (diskio_stats == NULL) goto out;
544	>	if (n >= alloc_parts) {
545	>	alloc_parts += 16;
546	>	parts = realloc(parts, alloc_parts * sizeof *parts);
547	>	if (parts == NULL) {
548	>	alloc_parts = 0;
549	>	goto out;
550	>	}
551		}
552
553	<	/* We read the number of blocks. Blocks are stored in 512 bytes */
554	<	diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
555	<	diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;
553	>	if (diskio_stats[n].disk_name != NULL)
554	>	free(diskio_stats[n].disk_name);
555	>	diskio_stats[n].disk_name = strdup(name);
556	>	diskio_stats[n].read_bytes = rsect * 512;
557	>	diskio_stats[n].write_bytes = wsect * 512;
558	>	diskio_stats[n].systime = now;
559	>	parts[n].major = major;
560	>	parts[n].minor = minor;
561
562	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
562	>	n++;
563	>	}
564
565	<	switch(major){
566	<	case 2:
567	<	if(minor==0){
342	<	diskio_stats_ptr->disk_name=strdup("fd0");
343	<	}
344	<	break;
565	>	if (!has_pp_stats) {
566	>	/* This is an older kernel without stats in /proc/partitions.
567	>	Read what we can from /proc/stat instead. */
568
569	<	case 3:
570	<	if(minor==0){
571	<	diskio_stats_ptr->disk_name=strdup("hda");
572	<	}else{
573	<	diskio_stats_ptr->disk_name=strdup("hdb");
574	<	}
575	<	break;
569	>	f = fopen("/proc/stat", "r");
570	>	if (f == NULL) goto out;
571	>	now = time(NULL);
572	>
573	>	line_ptr = f_read_line(f, "disk_io:");
574	>	if (line_ptr == NULL) goto out;
575	>
576	>	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
577	>	long long rsect, wsect;
578
579	+	if (*++line_ptr == '\0') break;
580	+
581	+	if((sscanf(line_ptr,
582	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
583	+	&major, &minor, &rsect, &wsect)) != 4) {
584	+	continue;
585	+	}
586	+
587	+	/* Find the corresponding device from earlier.
588	+	Just to add to the fun, "minor" is actually the disk
589	+	number, not the device minor, so we need to figure
590	+	out the real minor number based on the major!
591	+	This list is not exhaustive; if you're running
592	+	an older kernel you probably don't have fancy
593	+	I2O hardware anyway... */
594	+	switch (major) {
595	+	case 3:
596	+	case 21:
597		case 22:
598	<	if(minor==0){
599	<	diskio_stats_ptr->disk_name=strdup("hdc");
600	<	}else{
601	<	diskio_stats_ptr->disk_name=strdup("hdd");
602	<	}
598	>	case 33:
599	>	case 34:
600	>	case 36:
601	>	case 56:
602	>	case 57:
603	>	case 88:
604	>	case 89:
605	>	case 90:
606	>	case 91:
607	>	minor *= 64;
608		break;
609	<	case 8:
610	<	dev_letter='a'+(minor/16);
363	<	diskio_stats_ptr->disk_name=malloc(4);
364	<	snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter);
609	>	case 9:
610	>	case 43:
611		break;
612		default:
613	<	/* I have no idea what it is then :) */
368	<	diskio_stats_ptr->disk_name=malloc(16);
369	<	snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor);
613	>	minor *= 16;
614		break;
615	<	}
615	>	}
616	>	for (i = 0; i < n; i++) {
617	>	if (major == parts[i].major
618	>	&& minor == parts[i].minor)
619	>	break;
620	>	}
621	>	if (i == n) continue;
622
623	<	diskio_stats_ptr->systime=time(NULL);
624	<	num_diskio++;
623	>	/* We read the number of blocks. Blocks are stored in
624	>	512 bytes */
625	>	diskio_stats[i].read_bytes = rsect * 512;
626	>	diskio_stats[i].write_bytes = wsect * 512;
627	>	diskio_stats[i].systime = now;
628	>	}
629		}
630	+
631	+	num_diskio = n;
632	+	out:
633	+	if (f != NULL) fclose(f);
634
635		#endif
636		*entries=num_diskio;

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