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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 1.27 by pajs, Thu Oct 9 14:59:52 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 <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 76 | Line 83 | disk_stat_t *get_disk_stats(int *entries){
83		char *fs_types[] = VALID_FS_TYPES;
84		int x, valid_type;
85		int num_disks=0;
86	+	#if defined(LINUX) || defined (SOLARIS)
87		FILE *f;
88	+	#endif
89
90		disk_stat_t *disk_ptr;
91
#	Line 88 | Line 97 | disk_stat_t *get_disk_stats(int *entries){
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));
#	Line 97 | 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;
#	Line 146 | Line 174 | disk_stat_t *get_disk_stats(int *entries){
174		}
175
176		disk_ptr=disk_stats+num_disks;
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;
#	Line 201 | 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
#	Line 244 | Line 296 | diskio_stat_t *diskio_stat_malloc(int needed_entries,
296		static diskio_stat_t *diskio_stats=NULL;
297		static int num_diskio=0;
298
299	+	#ifdef LINUX
300	+	typedef struct {
301	+	int major;
302	+	int minor;
303	+	} partition;
304	+	#endif
305	+
306		diskio_stat_t *get_diskio_stats(int *entries){
307
308		static int sizeof_diskio_stats=0;
#	Line 259 | Line 318 | diskio_stat_t *get_diskio_stats(int *entries){
318		char *line_ptr;
319		int major, minor;
320		char dev_letter;
321	+	int has_pp_stats = 1;
322	+	static partition *parts = NULL;
323	+	static int alloc_parts = 0;
324	+	int i, n;
325	+	time_t now;
326		#endif
327	+	#ifdef FREEBSD
328	+	static struct statinfo stats;
329	+	static int stats_init = 0;
330	+	int counter;
331	+	struct device_selection *dev_sel = NULL;
332	+	int n_selected, n_selections;
333	+	long sel_gen;
334	+	struct devstat *dev_ptr;
335	+	#endif
336		num_diskio=0;
337
338	+	#ifdef FREEBSD
339	+	if (!stats_init) {
340	+	stats.dinfo=malloc(sizeof(struct devinfo));
341	+	bzero(stats.dinfo, sizeof(struct devinfo));
342	+	if(stats.dinfo==NULL) return NULL;
343	+	stats_init = 1;
344	+	}
345	+	if ((getdevs(&stats)) < 0) return NULL;
346	+	/* Not aware of a get all devices, so i said 999. If we ever
347	+	* find a machine with more than 999 disks, then i'll change
348	+	* this number :)
349	+	*/
350	+	#ifdef FREEBSD5
351	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
352	+	#else
353	+	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;
354	+	#endif
355	+
356	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
357	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
358	+
359	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
360	+	* devices.. like mem, proc.. and also doesn't report floppy
361	+	* drives etc unless they are doing stuff :)
362	+	*/
363	+	#ifdef FREEBSD5
364	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
365	+	#else
366	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
367	+	#endif
368	+	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
369	+	return NULL;
370	+	}
371	+	diskio_stats_ptr=diskio_stats+num_diskio;
372	+
373	+	#ifdef FREEBSD5
374	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
375	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
376	+	#else
377	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
378	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
379	+	#endif
380	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
381	+	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
382	+	diskio_stats_ptr->systime=time(NULL);
383	+
384	+	num_diskio++;
385	+	}
386	+	free(dev_sel);
387	+
388	+	#endif
389		#ifdef SOLARIS
390		if ((kc = kstat_open()) == NULL) {
391		return NULL;
#	Line 298 | Line 422 | diskio_stat_t *get_diskio_stats(int *entries){
422		#endif
423
424		#ifdef LINUX
425	<	f=fopen("/proc/stat", "r");
426	<	if(f==NULL){
427	<	*entries=0;
428	<	fclose(f);
429	<	return NULL;
430	<	}
431	<	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
432	<	*entries=0;
433	<	fclose(f);
434	<	return NULL;
435	<	}
436	<	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
437	<	line_ptr++;
438	<	if(*line_ptr=='\0'){
439	<	break;
425	>	num_diskio = 0;
426	>	n = 0;
427	>
428	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
429	>	have statistics in here too, so we can use those directly. */
430	>
431	>	f = fopen("/proc/partitions", "r");
432	>	if (f == NULL) goto out;
433	>	now = time(NULL);
434	>
435	>	while ((line_ptr = f_read_line(f, "")) != NULL) {
436	>	char name[20];
437	>	char *s;
438	>	long long rsect, wsect;
439	>
440	>	int nr = sscanf(line_ptr,
441	>	" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld",
442	>	&major, &minor, name, &rsect, &wsect);
443	>	if (nr < 3) continue;
444	>	if (nr < 5) {
445	>	has_pp_stats = 0;
446	>	rsect = 0;
447	>	wsect = 0;
448		}
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;
449
450	+	/* Skip device names ending in numbers, since they're
451	+	partitions. */
452	+	s = name;
453	+	while (*s != '\0') s++;
454	+	--s;
455	+	if (*s >= '0' && *s <= '9') continue;
456
457	<	if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \
458	<	&major, \
459	<	&minor, \
460	<	&diskio_stats_ptr->read_bytes, \
461	<	&diskio_stats_ptr->write_bytes))!=4) {
462	<	continue;
457	>	diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
458	>	diskio_stats);
459	>	if (diskio_stats == NULL) goto out;
460	>	if (n >= alloc_parts) {
461	>	alloc_parts += 16;
462	>	parts = realloc(parts, alloc_parts * sizeof *parts);
463	>	if (parts == NULL) {
464	>	alloc_parts = 0;
465	>	goto out;
466	>	}
467		}
468
469	<	/* We read the number of blocks. Blocks are stored in 512 bytes */
470	<	diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
471	<	diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;
469	>	if (diskio_stats[n].disk_name != NULL)
470	>	free(diskio_stats[n].disk_name);
471	>	diskio_stats[n].disk_name = strdup(name);
472	>	diskio_stats[n].read_bytes = rsect * 512;
473	>	diskio_stats[n].write_bytes = wsect * 512;
474	>	diskio_stats[n].systime = now;
475	>	parts[n].major = major;
476	>	parts[n].minor = minor;
477
478	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
478	>	n++;
479	>	}
480
481	<	switch(major){
482	<	case 2:
483	<	if(minor==0){
342	<	diskio_stats_ptr->disk_name=strdup("fd0");
343	<	}
344	<	break;
481	>	if (!has_pp_stats) {
482	>	/* This is an older kernel without stats in /proc/partitions.
483	>	Read what we can from /proc/stat instead. */
484
485	<	case 3:
486	<	if(minor==0){
487	<	diskio_stats_ptr->disk_name=strdup("hda");
488	<	}else{
489	<	diskio_stats_ptr->disk_name=strdup("hdb");
490	<	}
491	<	break;
485	>	f = fopen("/proc/stat", "r");
486	>	if (f == NULL) goto out;
487	>	now = time(NULL);
488	>
489	>	line_ptr = f_read_line(f, "disk_io:");
490	>	if (line_ptr == NULL) goto out;
491	>
492	>	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
493	>	long long rsect, wsect;
494
495	+	if (*++line_ptr == '\0') break;
496	+
497	+	if((sscanf(line_ptr,
498	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
499	+	&major, &minor, &rsect, &wsect)) != 4) {
500	+	continue;
501	+	}
502	+
503	+	/* Find the corresponding device from earlier.
504	+	Just to add to the fun, "minor" is actually the disk
505	+	number, not the device minor, so we need to figure
506	+	out the real minor number based on the major!
507	+	This list is not exhaustive; if you're running
508	+	an older kernel you probably don't have fancy
509	+	I2O hardware anyway... */
510	+	switch (major) {
511	+	case 3:
512	+	case 21:
513		case 22:
514	<	if(minor==0){
515	<	diskio_stats_ptr->disk_name=strdup("hdc");
516	<	}else{
517	<	diskio_stats_ptr->disk_name=strdup("hdd");
518	<	}
514	>	case 33:
515	>	case 34:
516	>	case 36:
517	>	case 56:
518	>	case 57:
519	>	case 88:
520	>	case 89:
521	>	case 90:
522	>	case 91:
523	>	minor *= 64;
524		break;
525	<	case 8:
526	<	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);
525	>	case 9:
526	>	case 43:
527		break;
528		default:
529	<	/* 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);
529	>	minor *= 16;
530		break;
531	<	}
531	>	}
532	>	for (i = 0; i < n; i++) {
533	>	if (major == parts[i].major
534	>	&& minor == parts[i].minor)
535	>	break;
536	>	}
537	>	if (i == n) continue;
538
539	<	diskio_stats_ptr->systime=time(NULL);
540	<	num_diskio++;
539	>	/* We read the number of blocks. Blocks are stored in
540	>	512 bytes */
541	>	diskio_stats[i].read_bytes = rsect * 512;
542	>	diskio_stats[i].write_bytes = wsect * 512;
543	>	diskio_stats[i].systime = now;
544	>	}
545		}
546	+
547	+	num_diskio = n;
548	+	out:
549	+	if (f != NULL) fclose(f);
550
551		#endif
552		*entries=num_diskio;

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