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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 1.25 by tdb, Tue Oct 7 20:32:50 2003 UTC vs.
Revision 1.39 by tdb, Mon Nov 10 21:07:04 2003 UTC

#	Line 31 | Line 31
31		#include <sys/mnttab.h>
32		#include <sys/statvfs.h>
33		#include <kstat.h>
34	–	#include <sys/types.h>
35	–	#include <dirent.h>
36	–	#include <limits.h>
37	–	#include <unistd.h>
34		#define VALID_FS_TYPES {"ufs", "tmpfs"}
35		#endif
36
37		#ifdef LINUX
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	>	#ifdef CYGWIN
43	>	#define VALID_FS_TYPES {"user"}
44	>	#else
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	+	#endif
52
53	<	#ifdef FREEBSD
53	>	#ifdef ALLBSD
54		#include <sys/param.h>
55		#include <sys/ucred.h>
56		#include <sys/mount.h>
57	+	#endif
58	+	#ifdef FREEBSD
59		#include <sys/dkstat.h>
60		#include <devstat.h>
61	<	#define VALID_FS_TYPES {"ufs", "mfs"}
61	>	#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
62	>	"ufs", "mfs"}
63		#endif
64	<	#define START_VAL 1
65	<
66	<	/* Solaris kernel stores the disk names in the old BSD format
67	<	* and we would prefer it in th modern format.
68	<	*/
69	<	#ifdef SOLARIS
62	<	/* Lines from the path_to_inst file */
63	<	typedef struct {
64	<	/* unlikely to get a line that long */
65	<	char line[256];
66	<	}file_line_t;
67	<
68	<	/* Linked list of the mappings from the older bsd-based sunos names
69	<	* to the modern solaris names
70	<	*/
71	<	struct disk_mapping_ent_t{
72	<	char *sunos_name;
73	<	char *solaris_name;
74	<	struct disk_mapping_ent_t *next;
75	<	};
76	<	typedef struct disk_mapping_ent_t disk_mapping_t;
64	>	#ifdef NETBSD
65	>	#include <sys/param.h>
66	>	#include <sys/sysctl.h>
67	>	#include <sys/disk.h>
68	>	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
69	>	"ntfs"}
70		#endif
71
72	+	#define START_VAL 1
73	+
74		char *copy_string(char *orig_ptr, const char *newtext){
75
76		/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
#	Line 122 | Line 117 | disk_stat_t *get_disk_stats(int *entries){
117		struct mntent *mp;
118		struct statfs fs;
119		#endif
120	<	#ifdef FREEBSD
120	>	#ifdef ALLBSD
121		int nummnt;
122		struct statfs *mp;
123		#endif
#	Line 135 | Line 130 | disk_stat_t *get_disk_stats(int *entries){
130		watermark=START_VAL;
131		init_disk_stat(0, watermark-1, disk_stats);
132		}
133	<	#ifdef FREEBSD
133	>	#ifdef ALLBSD
134		nummnt=getmntinfo(&mp , MNT_LOCAL);
135		if (nummnt<=0){
136		return NULL;
#	Line 199 | Line 194 | disk_stat_t *get_disk_stats(int *entries){
194		}
195
196		disk_ptr=disk_stats+num_disks;
197	<	#ifdef FREEBSD
197	>	#ifdef ALLBSD
198		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
199		return NULL;
200		}
#	Line 275 | Line 270 | disk_stat_t *get_disk_stats(int *entries){
270
271		*entries=num_disks;
272
273	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
274	<	#if defined(LINUX) || defined(SOLARIS)
273	>	/* If this fails, there is very little i can do about it, so
274	>	I'll ignore it :) */
275	>	#if defined(LINUX)
276	>	endmntent(f);
277	>	#endif
278	>	#if defined(SOLARIS)
279		fclose(f);
280		#endif
281
#	Line 292 | Line 291 | void diskio_stat_init(int start, int end, diskio_stat_
291		}
292		}
293
295	–	#ifdef SOLARIS
296	–	char *drive_map(char *sunos_name){
297	–	file_line_t *file_lines = NULL;
298	–	file_line_t *f_ptr;
299	–	static disk_mapping_t *disk_mapping = NULL;
300	–	disk_mapping_t *d_ptr;
301	–	int x = 0;
302	–	int y = 256;
303	–	FILE *f;
304	–	DIR *dsk;
305	–	struct dirent *dsk_ent;
306	–	char linkpointer[PATH_MAX];
307	–	char link_path[PATH_MAX];
308	–	char *p, *r, *q;
309	–
310	–	int dev_num;
311	–	char dev_name[51];
312	–
313	–	if(disk_mapping == NULL){
314	–	/* Read in the path_to_inst file into memory */
315	–	file_lines = malloc(sizeof(file_line_t) * y);
316	–	f_ptr = file_lines;
317	–	if(file_lines == NULL) return NULL;
318	–	f = fopen("/etc/path_to_inst", "r");
319	–	if (f == NULL){
320	–	free(file_lines);
321	–	return NULL;
322	–	}
323	–	for(x=0;fgets(f_ptr->line, sizeof(f_ptr->line), f);x++){
324	–	if ((x+1) >= y){
325	–	y = y*2;
326	–	file_lines = realloc(file_lines, sizeof(file_line_t) * y);
327	–	if (file_lines == NULL) return NULL;
328	–	f_ptr=file_lines+x;
329	–	}
330	–	f_ptr++;
331	–	}
332	–	f_ptr = NULL;
333	–	fclose(f);
334	–
335	–	dsk = opendir("/dev/dsk");
336	–	if (dsk == NULL){
337	–	free(file_lines);
338	–	return NULL;
339	–	}
340	–
341	–	while((dsk_ent = readdir(dsk)) != NULL){
342	–	snprintf(link_path, sizeof(link_path), "/dev/dsk/%s", dsk_ent->d_name);
343	–	/* Ignore the non symlinks, e.g. ".." and "." */
344	–	if((readlink(link_path, linkpointer, PATH_MAX)) == -1) continue;
345	–	/* We are only intrested in the string past the ../../devices/ part */
346	–	p = strstr(linkpointer, "devices");
347	–	p+=8;
348	–
349	–	/* We are not intrested in the :a etc slices */
350	–	q = strrchr(p, ':');
351	–	*q = '\0';
352	–
353	–	/* char *p should not contain the info we need to look up in the
354	–	* path_to_inst file.
355	–	*/
356	–
357	–	for(f_ptr = file_lines; f_ptr != NULL; f_ptr++){
358	–	r = strstr(f_ptr->line, p);
359	–	if (r != NULL) break;
360	–	}
361	–
362	–	if(r == NULL){
363	–	free(file_lines);
364	–	closedir(dsk);
365	–	return NULL;
366	–	}
367	–
368	–	/* f_ptr should be pointing to the line of path_to_inst we are intrested in now */
369	–
370	–	sscanf(r, "%*s %d \"%50s", &dev_num, dev_name);
371	–	q = strrchr(dev_name, '"');
372	–	if (q == NULL){
373	–	free(file_lines);
374	–	closedir(dsk);
375	–	return NULL;
376	–	}
377	–	*q = '\0';
378	–
379	–	/* Nasty... Add the number to the end of the string.. This means
380	–	* dev_name now contains the sunos name.. E.g. ssd1
381	–	*/
382	–	snprintf(dev_name, 50, "%s%d", dev_name, dev_num);
383	–	if (disk_mapping == NULL){
384	–	disk_mapping = malloc(sizeof(disk_mapping_t));
385	–	d_ptr = disk_mapping;
386	–	}else{
387	–	d_ptr->next = malloc(sizeof(disk_mapping_t));
388	–	d_ptr = d_ptr->next;
389	–	}
390	–
391	–	if (d_ptr == NULL){
392	–	free(file_lines);
393	–	closedir(dsk);
394	–	return NULL;
395	–	}
396	–
397	–	if( ((d_ptr->sunos_name = strdup(dev_name)) == NULL) ||
398	–	((d_ptr->solaris_name = strdup(dsk_ent->d_name))==NULL) ){
399	–	free(file_lines);
400	–	closedir(dsk);
401	–	return NULL;
402	–	}
403	–	}
404	–	free(file_lines);
405	–	closedir(dsk);
406	–	}
407	–
408	–	for(d_ptr = disk_mapping; d_ptr !=NULL; d_ptr=d_ptr->next){
409	–	if(!strcmp(sunos_name, d_ptr->sunos_name)){
410	–	return (strdup(d_ptr->solaris_name));
411	–	}
412	–	}
413	–
414	–	/* If we really fail to find it.. Return the original name back */
415	–	return strdup(sunos_name);
416	–	}
417	–
418	–	#endif
419	–
294		diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
295
296		if(diskio_stats==NULL){
#	Line 456 | Line 330 | typedef struct {
330		diskio_stat_t *get_diskio_stats(int *entries){
331
332		static int sizeof_diskio_stats=0;
333	+	#ifndef LINUX
334		diskio_stat_t *diskio_stats_ptr;
335	+	#endif
336
337		#ifdef SOLARIS
338		kstat_ctl_t *kc;
#	Line 467 | Line 343 | diskio_stat_t *get_diskio_stats(int *entries){
343		FILE *f;
344		char *line_ptr;
345		int major, minor;
470	–	char dev_letter;
346		int has_pp_stats = 1;
347		static partition *parts = NULL;
348		static int alloc_parts = 0;
349		int i, n;
350		time_t now;
351	+	const char *format;
352		#endif
353		#ifdef FREEBSD
354		static struct statinfo stats;
#	Line 483 | Line 359 | diskio_stat_t *get_diskio_stats(int *entries){
359		long sel_gen;
360		struct devstat *dev_ptr;
361		#endif
362	+	#ifdef NETBSD
363	+	struct disk_sysctl *stats;
364	+	int num_disks, i;
365	+	int mib[3];
366	+	size_t size;
367	+	#endif
368	+
369		num_diskio=0;
370
371	+	#ifdef NETBSD
372	+	mib[0] = CTL_HW;
373	+	mib[1] = HW_DISKSTATS;
374	+	mib[2] = sizeof(struct disk_sysctl);
375	+
376	+	if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
377	+	return NULL;
378	+	}
379	+	num_disks = size / sizeof(struct disk_sysctl);
380	+
381	+	stats = malloc(size);
382	+	if (stats == NULL) {
383	+	return NULL;
384	+	}
385	+
386	+	if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) {
387	+	return NULL;
388	+	}
389	+
390	+	for (i = 0; i < num_disks; i++) {
391	+	u_int64_t rbytes, wbytes;
392	+
393	+	#ifdef HAVE_DK_RBYTES
394	+	rbytes = stats[i].dk_rbytes;
395	+	wbytes = stats[i].dk_wbytes;
396	+	#else
397	+	/* Before 1.7, NetBSD merged reads and writes. */
398	+	rbytes = wbytes = stats[i].dk_bytes;
399	+	#endif
400	+
401	+	/* Don't keep stats for disks that have never been used. */
402	+	if (rbytes == 0 && wbytes == 0) {
403	+	continue;
404	+	}
405	+
406	+	diskio_stats = diskio_stat_malloc(num_diskio + 1,
407	+	&sizeof_diskio_stats,
408	+	diskio_stats);
409	+	if (diskio_stats == NULL) {
410	+	return NULL;
411	+	}
412	+	diskio_stats_ptr = diskio_stats + num_diskio;
413	+
414	+	diskio_stats_ptr->read_bytes = rbytes;
415	+	diskio_stats_ptr->write_bytes = wbytes;
416	+	if (diskio_stats_ptr->disk_name != NULL) {
417	+	free(diskio_stats_ptr->disk_name);
418	+	}
419	+	diskio_stats_ptr->disk_name = strdup(stats[i].dk_name);
420	+	diskio_stats_ptr->systime = time(NULL);
421	+
422	+	num_diskio++;
423	+	}
424	+
425	+	free(stats);
426	+	#endif
427	+
428		#ifdef FREEBSD
429		if (!stats_init) {
430		stats.dinfo=malloc(sizeof(struct devinfo));
491	–	bzero(stats.dinfo, sizeof(struct devinfo));
431		if(stats.dinfo==NULL) return NULL;
432	+	bzero(stats.dinfo, sizeof(struct devinfo));
433		stats_init = 1;
434		}
435	+	#ifdef FREEBSD5
436	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
437	+	/* Not aware of a get all devices, so i said 999. If we ever
438	+	* find a machine with more than 999 disks, then i'll change
439	+	* this number :)
440	+	*/
441	+	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;
442	+	#else
443		if ((getdevs(&stats)) < 0) return NULL;
444		/* Not aware of a get all devices, so i said 999. If we ever
445		* find a machine with more than 999 disks, then i'll change
446		* this number :)
447		*/
448		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;
449	+	#endif
450
451		for(counter=0;counter<stats.dinfo->numdevs;counter++){
452		dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
#	Line 506 | Line 455 | diskio_stat_t *get_diskio_stats(int *entries){
455		* devices.. like mem, proc.. and also doesn't report floppy
456		* drives etc unless they are doing stuff :)
457		*/
458	+	#ifdef FREEBSD5
459	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
460	+	#else
461		if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
462	+	#endif
463		if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
464		return NULL;
465		}
466		diskio_stats_ptr=diskio_stats+num_diskio;
467	<
467	>
468	>	#ifdef FREEBSD5
469	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
470	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
471	>	#else
472		diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
473		diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
474	+	#endif
475		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
476		asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
477		diskio_stats_ptr->systime=time(NULL);
#	Line 549 | Line 507 | diskio_stat_t *get_diskio_stats(int *entries){
507
508		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
509
510	<	diskio_stats_ptr->disk_name=drive_map(ksp->ks_name);
510	>	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
511		diskio_stats_ptr->systime=time(NULL);
512		num_diskio++;
513		}
#	Line 563 | Line 521 | diskio_stat_t *get_diskio_stats(int *entries){
521		n = 0;
522
523		/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
524	<	have statistics in here too, so we can use those directly. */
524	>	have statistics in here too, so we can use those directly.
525	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
526	>	the same format. */
527
528	<	f = fopen("/proc/partitions", "r");
528	>	f = fopen("/proc/diskstats", "r");
529	>	format = " %d %d %19s %*d %*d %lld %*d %*d %*d %lld";
530	>	if (f == NULL) {
531	>	f = fopen("/proc/partitions", "r");
532	>	format = " %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld";
533	>	}
534		if (f == NULL) goto out;
535		now = time(NULL);
536
#	Line 574 | Line 539 | diskio_stat_t *get_diskio_stats(int *entries){
539		char *s;
540		long long rsect, wsect;
541
542	<	int nr = sscanf(line_ptr,
578	<	" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld",
542	>	int nr = sscanf(line_ptr, format,
543		&major, &minor, name, &rsect, &wsect);
544		if (nr < 3) continue;
581	–	if (nr < 5) {
582	–	has_pp_stats = 0;
583	–	rsect = 0;
584	–	wsect = 0;
585	–	}
545
546		/* Skip device names ending in numbers, since they're
547		partitions. */
#	Line 590 | Line 549 | diskio_stat_t *get_diskio_stats(int *entries){
549		while (*s != '\0') s++;
550		--s;
551		if (*s >= '0' && *s <= '9') continue;
552	+
553	+	if (nr < 5) {
554	+	has_pp_stats = 0;
555	+	rsect = 0;
556	+	wsect = 0;
557	+	}
558
559		diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
560		diskio_stats);

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