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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 1.10 by pajs, Tue Mar 4 18:06:16 2003 UTC vs.
Revision 1.30 by ats, Sun Oct 19 00:10:30 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"}
43		#endif
44
45	+	#ifdef FREEBSD
46	+	#include <sys/param.h>
47	+	#include <sys/ucred.h>
48	+	#include <sys/mount.h>
49	+	#include <sys/dkstat.h>
50	+	#include <devstat.h>
51	+	#define VALID_FS_TYPES {"ufs", "mfs"}
52	+	#endif
53		#define START_VAL 1
54
55		char *copy_string(char *orig_ptr, const char *newtext){
#	Line 76 | Line 84 | disk_stat_t *get_disk_stats(int *entries){
84		char *fs_types[] = VALID_FS_TYPES;
85		int x, valid_type;
86		int num_disks=0;
87	+	#if defined(LINUX) || defined (SOLARIS)
88		FILE *f;
89	+	#endif
90
91		disk_stat_t *disk_ptr;
92
93		#ifdef SOLARIS
94	<	struct mnttab *mp;
94	>	struct mnttab mp;
95		struct statvfs fs;
96		#endif
97		#ifdef LINUX
98		struct mntent *mp;
99		struct statfs fs;
100		#endif
101	+	#ifdef FREEBSD
102	+	int nummnt;
103	+	struct statfs *mp;
104	+	#endif
105
106		if(watermark==-1){
107		disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
#	Line 97 | Line 111 | disk_stat_t *get_disk_stats(int *entries){
111		watermark=START_VAL;
112		init_disk_stat(0, watermark-1, disk_stats);
113		}
114	+	#ifdef FREEBSD
115	+	nummnt=getmntinfo(&mp , MNT_LOCAL);
116	+	if (nummnt<=0){
117	+	return NULL;
118	+	}
119	+	for(;nummnt--; mp++){
120	+	valid_type=0;
121	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
122	+	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
123	+	valid_type=1;
124	+	break;
125	+	}
126	+	}
127	+	#endif
128	+
129		#ifdef LINUX
130		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
131		return NULL;
#	Line 146 | Line 175 | disk_stat_t *get_disk_stats(int *entries){
175		}
176
177		disk_ptr=disk_stats+num_disks;
178	+	#ifdef FREEBSD
179	+	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
180	+	return NULL;
181	+	}
182	+
183	+	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
184	+	return NULL;
185	+	}
186	+
187	+	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
188	+	return NULL;
189	+	}
190	+
191	+	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
192	+	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
193	+	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
194	+
195	+	disk_ptr->total_inodes=(long long)mp->f_files;
196	+	disk_ptr->free_inodes=(long long)mp->f_ffree;
197	+	/* Freebsd doesn't have a "available" inodes */
198	+	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
199	+	#endif
200		#ifdef LINUX
201		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
202		return NULL;
#	Line 201 | Line 252 | disk_stat_t *get_disk_stats(int *entries){
252		*entries=num_disks;
253
254		/* If this fails, there is very little i can do about it, so i'll ignore it :) */
255	+	#if defined(LINUX) || defined(SOLARIS)
256		fclose(f);
257	+	#endif
258
259		return disk_stats;
260
#	Line 244 | Line 297 | diskio_stat_t *diskio_stat_malloc(int needed_entries,
297		static diskio_stat_t *diskio_stats=NULL;
298		static int num_diskio=0;
299
300	+	#ifdef LINUX
301	+	typedef struct {
302	+	int major;
303	+	int minor;
304	+	} partition;
305	+	#endif
306	+
307		diskio_stat_t *get_diskio_stats(int *entries){
308
309		static int sizeof_diskio_stats=0;
#	Line 259 | Line 319 | diskio_stat_t *get_diskio_stats(int *entries){
319		char *line_ptr;
320		int major, minor;
321		char dev_letter;
322	+	int has_pp_stats = 1;
323	+	static partition *parts = NULL;
324	+	static int alloc_parts = 0;
325	+	int i, n;
326	+	time_t now;
327		#endif
328	<
328	>	#ifdef FREEBSD
329	>	static struct statinfo stats;
330	>	static int stats_init = 0;
331	>	int counter;
332	>	struct device_selection *dev_sel = NULL;
333	>	int n_selected, n_selections;
334	>	long sel_gen;
335	>	struct devstat *dev_ptr;
336	>	#endif
337		num_diskio=0;
338
339	+	#ifdef FREEBSD
340	+	if (!stats_init) {
341	+	stats.dinfo=malloc(sizeof(struct devinfo));
342	+	bzero(stats.dinfo, sizeof(struct devinfo));
343	+	if(stats.dinfo==NULL) return NULL;
344	+	stats_init = 1;
345	+	}
346	+	#ifdef FREEBSD5
347	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
348	+	/* Not aware of a get all devices, so i said 999. If we ever
349	+	* find a machine with more than 999 disks, then i'll change
350	+	* this number :)
351	+	*/
352	+	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;
353	+	#else
354	+	if ((getdevs(&stats)) < 0) return NULL;
355	+	/* Not aware of a get all devices, so i said 999. If we ever
356	+	* find a machine with more than 999 disks, then i'll change
357	+	* this number :)
358	+	*/
359	+	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;
360	+	#endif
361	+
362	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
363	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
364	+
365	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
366	+	* devices.. like mem, proc.. and also doesn't report floppy
367	+	* drives etc unless they are doing stuff :)
368	+	*/
369	+	#ifdef FREEBSD5
370	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
371	+	#else
372	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
373	+	#endif
374	+	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
375	+	return NULL;
376	+	}
377	+	diskio_stats_ptr=diskio_stats+num_diskio;
378	+
379	+	#ifdef FREEBSD5
380	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
381	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
382	+	#else
383	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
384	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
385	+	#endif
386	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
387	+	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
388	+	diskio_stats_ptr->systime=time(NULL);
389	+
390	+	num_diskio++;
391	+	}
392	+	free(dev_sel);
393	+
394	+	#endif
395		#ifdef SOLARIS
396		if ((kc = kstat_open()) == NULL) {
397		return NULL;
#	Line 290 | Line 419 | diskio_stat_t *get_diskio_stats(int *entries){
419		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
420
421		diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
422	+	diskio_stats_ptr->systime=time(NULL);
423		num_diskio++;
424		}
425		}
#	Line 298 | Line 428 | diskio_stat_t *get_diskio_stats(int *entries){
428		#endif
429
430		#ifdef LINUX
431	<	f=fopen("/proc/stat", "r");
432	<	if(f==NULL){
433	<	return NULL;
434	<	}
435	<	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
436	<	return NULL;
437	<	}
438	<	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
439	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
440	<	fclose(f);
441	<	return NULL;
431	>	num_diskio = 0;
432	>	n = 0;
433	>
434	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
435	>	have statistics in here too, so we can use those directly. */
436	>
437	>	f = fopen("/proc/partitions", "r");
438	>	if (f == NULL) goto out;
439	>	now = time(NULL);
440	>
441	>	while ((line_ptr = f_read_line(f, "")) != NULL) {
442	>	char name[20];
443	>	char *s;
444	>	long long rsect, wsect;
445	>
446	>	int nr = sscanf(line_ptr,
447	>	" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld",
448	>	&major, &minor, name, &rsect, &wsect);
449	>	if (nr < 3) continue;
450	>	if (nr < 5) {
451	>	has_pp_stats = 0;
452	>	rsect = 0;
453	>	wsect = 0;
454		}
313	–	diskio_stats_ptr=diskio_stats+num_diskio;
455
456	+	/* Skip device names ending in numbers, since they're
457	+	partitions. */
458	+	s = name;
459	+	while (*s != '\0') s++;
460	+	--s;
461	+	if (*s >= '0' && *s <= '9') continue;
462
463	<	sscanf(line_ptr, "(%d,%d):(%*d, %lld, %*d, %lld, %*d)", \
464	<	&major, \
465	<	&minor, \
466	<	&diskio_stats_ptr->read_bytes, \
467	<	&diskio_stats_ptr->write_bytes);
463	>	diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
464	>	diskio_stats);
465	>	if (diskio_stats == NULL) goto out;
466	>	if (n >= alloc_parts) {
467	>	alloc_parts += 16;
468	>	parts = realloc(parts, alloc_parts * sizeof *parts);
469	>	if (parts == NULL) {
470	>	alloc_parts = 0;
471	>	goto out;
472	>	}
473	>	}
474
475	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
475	>	if (diskio_stats[n].disk_name != NULL)
476	>	free(diskio_stats[n].disk_name);
477	>	diskio_stats[n].disk_name = strdup(name);
478	>	diskio_stats[n].read_bytes = rsect * 512;
479	>	diskio_stats[n].write_bytes = wsect * 512;
480	>	diskio_stats[n].systime = now;
481	>	parts[n].major = major;
482	>	parts[n].minor = minor;
483
484	<	switch(major){
485	<	case 3:
326	<	if(minor==0){
327	<	diskio_stats_ptr->disk_name=strdup("hda");
328	<	}else{
329	<	diskio_stats_ptr->disk_name=strdup("hdb");
330	<	}
331	<	break;
484	>	n++;
485	>	}
486
487	+	if (!has_pp_stats) {
488	+	/* This is an older kernel without stats in /proc/partitions.
489	+	Read what we can from /proc/stat instead. */
490	+
491	+	f = fopen("/proc/stat", "r");
492	+	if (f == NULL) goto out;
493	+	now = time(NULL);
494	+
495	+	line_ptr = f_read_line(f, "disk_io:");
496	+	if (line_ptr == NULL) goto out;
497	+
498	+	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
499	+	long long rsect, wsect;
500	+
501	+	if (*++line_ptr == '\0') break;
502	+
503	+	if((sscanf(line_ptr,
504	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
505	+	&major, &minor, &rsect, &wsect)) != 4) {
506	+	continue;
507	+	}
508	+
509	+	/* Find the corresponding device from earlier.
510	+	Just to add to the fun, "minor" is actually the disk
511	+	number, not the device minor, so we need to figure
512	+	out the real minor number based on the major!
513	+	This list is not exhaustive; if you're running
514	+	an older kernel you probably don't have fancy
515	+	I2O hardware anyway... */
516	+	switch (major) {
517	+	case 3:
518	+	case 21:
519		case 22:
520	<	if(minor==0){
521	<	diskio_stats_ptr->disk_name=strdup("hdc");
522	<	}else{
523	<	diskio_stats_ptr->disk_name=strdup("hdd");
524	<	}
525	<	case 8:
526	<	dev_letter='a'+(minor/16);
527	<	diskio_stats_ptr->disk_name=malloc(4);
528	<	snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter);
520	>	case 33:
521	>	case 34:
522	>	case 36:
523	>	case 56:
524	>	case 57:
525	>	case 88:
526	>	case 89:
527	>	case 90:
528	>	case 91:
529	>	minor *= 64;
530	>	break;
531	>	case 9:
532	>	case 43:
533	>	break;
534		default:
535	<	/* I have no idea what it is then :) */
536	<	diskio_stats_ptr->disk_name=malloc(16);
537	<	snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor);
538	<	}
535	>	minor *= 16;
536	>	break;
537	>	}
538	>	for (i = 0; i < n; i++) {
539	>	if (major == parts[i].major
540	>	&& minor == parts[i].minor)
541	>	break;
542	>	}
543	>	if (i == n) continue;
544
545	<	num_diskio++;
545	>	/* We read the number of blocks. Blocks are stored in
546	>	512 bytes */
547	>	diskio_stats[i].read_bytes = rsect * 512;
548	>	diskio_stats[i].write_bytes = wsect * 512;
549	>	diskio_stats[i].systime = now;
550	>	}
551		}
552	+
553	+	num_diskio = n;
554	+	out:
555	+	if (f != NULL) fclose(f);
556
557		#endif
558		*entries=num_diskio;

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