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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 1.40 by ats, Mon Nov 10 23:25:45 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 <time.h>
29		#include "statgrab.h"
30
31		#ifdef SOLARIS
30	–	#include <stdio.h>
32		#include <sys/mnttab.h>
33		#include <sys/statvfs.h>
34		#include <kstat.h>
35		#define VALID_FS_TYPES {"ufs", "tmpfs"}
36		#endif
37
38	<	#ifdef LINUX
38	<	#include <stdio.h>
39	<	#include <sys/vfs.h>
38	>	#if defined(LINUX) || defined(CYGWIN)
39		#include <mntent.h>
40	+	#include <sys/vfs.h>
41		#include "tools.h"
42	–	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
42		#endif
43
44	+	#ifdef LINUX
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	+
52	+	#ifdef CYGWIN
53	+	#define VALID_FS_TYPES {"user"}
54	+	#endif
55	+
56	+	#ifdef ALLBSD
57	+	#include <sys/param.h>
58	+	#include <sys/ucred.h>
59	+	#include <sys/mount.h>
60	+	#endif
61	+	#ifdef FREEBSD
62	+	#include <sys/dkstat.h>
63	+	#include <devstat.h>
64	+	#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
65	+	"ufs", "mfs"}
66	+	#endif
67	+	#ifdef NETBSD
68	+	#include <sys/param.h>
69	+	#include <sys/sysctl.h>
70	+	#include <sys/disk.h>
71	+	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
72	+	"ntfs"}
73	+	#endif
74	+
75		#define START_VAL 1
76
77		char *copy_string(char *orig_ptr, const char *newtext){
#	Line 76 | Line 106 | disk_stat_t *get_disk_stats(int *entries){
106		char *fs_types[] = VALID_FS_TYPES;
107		int x, valid_type;
108		int num_disks=0;
109	+	#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN)
110		FILE *f;
111	+	#endif
112
113		disk_stat_t *disk_ptr;
114
#	Line 84 | Line 116 | disk_stat_t *get_disk_stats(int *entries){
116		struct mnttab mp;
117		struct statvfs fs;
118		#endif
119	<	#ifdef LINUX
119	>	#if defined(LINUX) || defined(CYGWIN)
120		struct mntent *mp;
121		struct statfs fs;
122		#endif
123	+	#ifdef ALLBSD
124	+	int nummnt;
125	+	struct statfs *mp;
126	+	#endif
127
128		if(watermark==-1){
129		disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
#	Line 97 | Line 133 | disk_stat_t *get_disk_stats(int *entries){
133		watermark=START_VAL;
134		init_disk_stat(0, watermark-1, disk_stats);
135		}
136	<	#ifdef LINUX
136	>	#ifdef ALLBSD
137	>	nummnt=getmntinfo(&mp , MNT_LOCAL);
138	>	if (nummnt<=0){
139	>	return NULL;
140	>	}
141	>	for(;nummnt--; mp++){
142	>	valid_type=0;
143	>	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
144	>	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
145	>	valid_type=1;
146	>	break;
147	>	}
148	>	}
149	>	#endif
150	>
151	>	#if defined(LINUX) || defined(CYGWIN)
152		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
153		return NULL;
154		}
#	Line 146 | Line 197 | disk_stat_t *get_disk_stats(int *entries){
197		}
198
199		disk_ptr=disk_stats+num_disks;
200	<	#ifdef LINUX
200	>	#ifdef ALLBSD
201	>	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
202	>	return NULL;
203	>	}
204	>
205	>	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
206	>	return NULL;
207	>	}
208	>
209	>	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
210	>	return NULL;
211	>	}
212	>
213	>	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
214	>	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
215	>	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
216	>
217	>	disk_ptr->total_inodes=(long long)mp->f_files;
218	>	disk_ptr->free_inodes=(long long)mp->f_ffree;
219	>	/* Freebsd doesn't have a "available" inodes */
220	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
221	>	#endif
222	>	#if defined(LINUX) || defined(CYGWIN)
223		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
224		return NULL;
225		}
#	Line 200 | Line 273 | disk_stat_t *get_disk_stats(int *entries){
273
274		*entries=num_disks;
275
276	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
276	>	/* If this fails, there is very little i can do about it, so
277	>	I'll ignore it :) */
278	>	#if defined(LINUX) || defined(CYGWIN)
279	>	endmntent(f);
280	>	#endif
281	>	#if defined(SOLARIS)
282		fclose(f);
283	+	#endif
284
285		return disk_stats;
286
#	Line 244 | Line 323 | diskio_stat_t *diskio_stat_malloc(int needed_entries,
323		static diskio_stat_t *diskio_stats=NULL;
324		static int num_diskio=0;
325
326	+	#ifdef LINUX
327	+	typedef struct {
328	+	int major;
329	+	int minor;
330	+	} partition;
331	+	#endif
332	+
333		diskio_stat_t *get_diskio_stats(int *entries){
334
335		static int sizeof_diskio_stats=0;
336	+	#ifndef LINUX
337		diskio_stat_t *diskio_stats_ptr;
338	+	#endif
339
340		#ifdef SOLARIS
341		kstat_ctl_t *kc;
#	Line 258 | Line 346 | diskio_stat_t *get_diskio_stats(int *entries){
346		FILE *f;
347		char *line_ptr;
348		int major, minor;
349	<	char dev_letter;
349	>	int has_pp_stats = 1;
350	>	static partition *parts = NULL;
351	>	static int alloc_parts = 0;
352	>	int i, n;
353	>	time_t now;
354	>	const char *format;
355		#endif
356	+	#ifdef FREEBSD
357	+	static struct statinfo stats;
358	+	static int stats_init = 0;
359	+	int counter;
360	+	struct device_selection *dev_sel = NULL;
361	+	int n_selected, n_selections;
362	+	long sel_gen;
363	+	struct devstat *dev_ptr;
364	+	#endif
365	+	#ifdef NETBSD
366	+	struct disk_sysctl *stats;
367	+	int num_disks, i;
368	+	int mib[3];
369	+	size_t size;
370	+	#endif
371	+
372		num_diskio=0;
373
374	+	#ifdef NETBSD
375	+	mib[0] = CTL_HW;
376	+	mib[1] = HW_DISKSTATS;
377	+	mib[2] = sizeof(struct disk_sysctl);
378	+
379	+	if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
380	+	return NULL;
381	+	}
382	+	num_disks = size / sizeof(struct disk_sysctl);
383	+
384	+	stats = malloc(size);
385	+	if (stats == NULL) {
386	+	return NULL;
387	+	}
388	+
389	+	if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) {
390	+	return NULL;
391	+	}
392	+
393	+	for (i = 0; i < num_disks; i++) {
394	+	u_int64_t rbytes, wbytes;
395	+
396	+	#ifdef HAVE_DK_RBYTES
397	+	rbytes = stats[i].dk_rbytes;
398	+	wbytes = stats[i].dk_wbytes;
399	+	#else
400	+	/* Before 1.7, NetBSD merged reads and writes. */
401	+	rbytes = wbytes = stats[i].dk_bytes;
402	+	#endif
403	+
404	+	/* Don't keep stats for disks that have never been used. */
405	+	if (rbytes == 0 && wbytes == 0) {
406	+	continue;
407	+	}
408	+
409	+	diskio_stats = diskio_stat_malloc(num_diskio + 1,
410	+	&sizeof_diskio_stats,
411	+	diskio_stats);
412	+	if (diskio_stats == NULL) {
413	+	return NULL;
414	+	}
415	+	diskio_stats_ptr = diskio_stats + num_diskio;
416	+
417	+	diskio_stats_ptr->read_bytes = rbytes;
418	+	diskio_stats_ptr->write_bytes = wbytes;
419	+	if (diskio_stats_ptr->disk_name != NULL) {
420	+	free(diskio_stats_ptr->disk_name);
421	+	}
422	+	diskio_stats_ptr->disk_name = strdup(stats[i].dk_name);
423	+	diskio_stats_ptr->systime = time(NULL);
424	+
425	+	num_diskio++;
426	+	}
427	+
428	+	free(stats);
429	+	#endif
430	+
431	+	#ifdef FREEBSD
432	+	if (!stats_init) {
433	+	stats.dinfo=malloc(sizeof(struct devinfo));
434	+	if(stats.dinfo==NULL) return NULL;
435	+	bzero(stats.dinfo, sizeof(struct devinfo));
436	+	stats_init = 1;
437	+	}
438	+	#ifdef FREEBSD5
439	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
440	+	/* Not aware of a get all devices, so i said 999. If we ever
441	+	* find a machine with more than 999 disks, then i'll change
442	+	* this number :)
443	+	*/
444	+	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;
445	+	#else
446	+	if ((getdevs(&stats)) < 0) return NULL;
447	+	/* Not aware of a get all devices, so i said 999. If we ever
448	+	* find a machine with more than 999 disks, then i'll change
449	+	* this number :)
450	+	*/
451	+	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;
452	+	#endif
453	+
454	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
455	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
456	+
457	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
458	+	* devices.. like mem, proc.. and also doesn't report floppy
459	+	* drives etc unless they are doing stuff :)
460	+	*/
461	+	#ifdef FREEBSD5
462	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
463	+	#else
464	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
465	+	#endif
466	+	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
467	+	return NULL;
468	+	}
469	+	diskio_stats_ptr=diskio_stats+num_diskio;
470	+
471	+	#ifdef FREEBSD5
472	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
473	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
474	+	#else
475	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
476	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
477	+	#endif
478	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
479	+	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
480	+	diskio_stats_ptr->systime=time(NULL);
481	+
482	+	num_diskio++;
483	+	}
484	+	free(dev_sel);
485	+
486	+	#endif
487		#ifdef SOLARIS
488		if ((kc = kstat_open()) == NULL) {
489		return NULL;
#	Line 298 | Line 520 | diskio_stat_t *get_diskio_stats(int *entries){
520		#endif
521
522		#ifdef LINUX
523	<	f=fopen("/proc/stat", "r");
524	<	if(f==NULL){
525	<	*entries=0;
526	<	fclose(f);
527	<	return NULL;
523	>	num_diskio = 0;
524	>	n = 0;
525	>
526	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
527	>	have statistics in here too, so we can use those directly.
528	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
529	>	the same format. */
530	>
531	>	f = fopen("/proc/diskstats", "r");
532	>	format = " %d %d %19s %*d %*d %lld %*d %*d %*d %lld";
533	>	if (f == NULL) {
534	>	f = fopen("/proc/partitions", "r");
535	>	format = " %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld";
536		}
537	<	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
538	<	*entries=0;
309	<	fclose(f);
310	<	return NULL;
311	<	}
312	<	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
313	<	line_ptr++;
314	<	if(*line_ptr=='\0'){
315	<	break;
316	<	}
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;
537	>	if (f == NULL) goto out;
538	>	now = time(NULL);
539
540	+	while ((line_ptr = f_read_line(f, "")) != NULL) {
541	+	char name[20];
542	+	char *s;
543	+	long long rsect, wsect;
544
545	<	if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \
546	<	&major, \
547	<	&minor, \
548	<	&diskio_stats_ptr->read_bytes, \
549	<	&diskio_stats_ptr->write_bytes))!=4) {
550	<	continue;
545	>	int nr = sscanf(line_ptr, format,
546	>	&major, &minor, name, &rsect, &wsect);
547	>	if (nr < 3) continue;
548	>
549	>	/* Skip device names ending in numbers, since they're
550	>	partitions. */
551	>	s = name;
552	>	while (*s != '\0') s++;
553	>	--s;
554	>	if (*s >= '0' && *s <= '9') continue;
555	>
556	>	if (nr < 5) {
557	>	has_pp_stats = 0;
558	>	rsect = 0;
559	>	wsect = 0;
560		}
561
562	<	/* We read the number of blocks. Blocks are stored in 512 bytes */
563	<	diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
564	<	diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;
562	>	diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
563	>	diskio_stats);
564	>	if (diskio_stats == NULL) goto out;
565	>	if (n >= alloc_parts) {
566	>	alloc_parts += 16;
567	>	parts = realloc(parts, alloc_parts * sizeof *parts);
568	>	if (parts == NULL) {
569	>	alloc_parts = 0;
570	>	goto out;
571	>	}
572	>	}
573
574	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
574	>	if (diskio_stats[n].disk_name != NULL)
575	>	free(diskio_stats[n].disk_name);
576	>	diskio_stats[n].disk_name = strdup(name);
577	>	diskio_stats[n].read_bytes = rsect * 512;
578	>	diskio_stats[n].write_bytes = wsect * 512;
579	>	diskio_stats[n].systime = now;
580	>	parts[n].major = major;
581	>	parts[n].minor = minor;
582
583	<	switch(major){
584	<	case 2:
341	<	if(minor==0){
342	<	diskio_stats_ptr->disk_name=strdup("fd0");
343	<	}
344	<	break;
583	>	n++;
584	>	}
585
586	<	case 3:
587	<	if(minor==0){
588	<	diskio_stats_ptr->disk_name=strdup("hda");
349	<	}else{
350	<	diskio_stats_ptr->disk_name=strdup("hdb");
351	<	}
352	<	break;
586	>	if (!has_pp_stats) {
587	>	/* This is an older kernel without stats in /proc/partitions.
588	>	Read what we can from /proc/stat instead. */
589
590	+	f = fopen("/proc/stat", "r");
591	+	if (f == NULL) goto out;
592	+	now = time(NULL);
593	+
594	+	line_ptr = f_read_line(f, "disk_io:");
595	+	if (line_ptr == NULL) goto out;
596	+
597	+	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
598	+	long long rsect, wsect;
599	+
600	+	if (*++line_ptr == '\0') break;
601	+
602	+	if((sscanf(line_ptr,
603	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
604	+	&major, &minor, &rsect, &wsect)) != 4) {
605	+	continue;
606	+	}
607	+
608	+	/* Find the corresponding device from earlier.
609	+	Just to add to the fun, "minor" is actually the disk
610	+	number, not the device minor, so we need to figure
611	+	out the real minor number based on the major!
612	+	This list is not exhaustive; if you're running
613	+	an older kernel you probably don't have fancy
614	+	I2O hardware anyway... */
615	+	switch (major) {
616	+	case 3:
617	+	case 21:
618		case 22:
619	<	if(minor==0){
620	<	diskio_stats_ptr->disk_name=strdup("hdc");
621	<	}else{
622	<	diskio_stats_ptr->disk_name=strdup("hdd");
623	<	}
619	>	case 33:
620	>	case 34:
621	>	case 36:
622	>	case 56:
623	>	case 57:
624	>	case 88:
625	>	case 89:
626	>	case 90:
627	>	case 91:
628	>	minor *= 64;
629		break;
630	<	case 8:
631	<	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);
630	>	case 9:
631	>	case 43:
632		break;
633		default:
634	<	/* 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);
634	>	minor *= 16;
635		break;
636	<	}
636	>	}
637	>	for (i = 0; i < n; i++) {
638	>	if (major == parts[i].major
639	>	&& minor == parts[i].minor)
640	>	break;
641	>	}
642	>	if (i == n) continue;
643
644	<	diskio_stats_ptr->systime=time(NULL);
645	<	num_diskio++;
644	>	/* We read the number of blocks. Blocks are stored in
645	>	512 bytes */
646	>	diskio_stats[i].read_bytes = rsect * 512;
647	>	diskio_stats[i].write_bytes = wsect * 512;
648	>	diskio_stats[i].systime = now;
649	>	}
650		}
651	+
652	+	num_diskio = n;
653	+	out:
654	+	if (f != NULL) fclose(f);
655
656		#endif
657		*entries=num_diskio;

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