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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 1.24 by tdb, Tue Oct 7 19:58:37 2003 UTC vs.
Revision 1.43 by tdb, Thu Nov 20 12:13:12 2003 UTC

#	Line 25 | Line 25
25		#include <stdio.h>
26		#include <stdlib.h>
27		#include <string.h>
28	+	#include <time.h>
29		#include "statgrab.h"
30
31		#ifdef SOLARIS
32		#include <sys/mnttab.h>
33		#include <sys/statvfs.h>
34		#include <kstat.h>
34	–	#include <sys/types.h>
35	–	#include <dirent.h>
36	–	#include <limits.h>
37	–	#include <unistd.h>
35		#define VALID_FS_TYPES {"ufs", "tmpfs"}
36		#endif
37
38	<	#ifdef LINUX
42	<	#include <sys/vfs.h>
38	>	#if defined(LINUX) || defined(CYGWIN)
39		#include <mntent.h>
40	+	#include <sys/vfs.h>
41		#include "tools.h"
45	–	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
42		#endif
43
44	<	#ifdef FREEBSD
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 {"ufs", "mfs"}
64	>	#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
65	>	"ufs", "mfs"}
66		#endif
67	<	#define START_VAL 1
68	<
69	<	/* Solaris kernel stores the disk names in the old BSD format
70	<	* and we would prefer it in th modern format.
71	<	*/
72	<	#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;
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){
78
79		/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
#	Line 100 | Line 98 | void init_disk_stat(int start, int end, disk_stat_t *d
98		}
99		}
100
101	+	int is_valid_fs_type(const char *type) {
102	+	const char *types[] = VALID_FS_TYPES;
103	+	int i;
104	+
105	+	for (i = 0; i < (sizeof types / sizeof *types); i++) {
106	+	if (strcmp(types[i], type) == 0) {
107	+	return 1;
108	+	}
109	+	}
110	+	return 0;
111	+	}
112	+
113		disk_stat_t *get_disk_stats(int *entries){
114
115		static disk_stat_t *disk_stats;
116		static int watermark=-1;
117
118	<	char *fs_types[] = VALID_FS_TYPES;
109	<	int x, valid_type;
118	>	int valid_type;
119		int num_disks=0;
120	<	#if defined(LINUX) || defined (SOLARIS)
120	>	#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN)
121		FILE *f;
122		#endif
123
#	Line 118 | Line 127 | disk_stat_t *get_disk_stats(int *entries){
127		struct mnttab mp;
128		struct statvfs fs;
129		#endif
130	<	#ifdef LINUX
130	>	#if defined(LINUX) || defined(CYGWIN)
131		struct mntent *mp;
132		struct statfs fs;
133		#endif
134	<	#ifdef FREEBSD
134	>	#ifdef ALLBSD
135		int nummnt;
136		struct statfs *mp;
137		#endif
#	Line 135 | Line 144 | disk_stat_t *get_disk_stats(int *entries){
144		watermark=START_VAL;
145		init_disk_stat(0, watermark-1, disk_stats);
146		}
147	<	#ifdef FREEBSD
147	>	#ifdef ALLBSD
148		nummnt=getmntinfo(&mp , MNT_LOCAL);
149		if (nummnt<=0){
150		return NULL;
151		}
152		for(;nummnt--; mp++){
153	<	valid_type=0;
145	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
146	<	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
147	<	valid_type=1;
148	<	break;
149	<	}
150	<	}
153	>	valid_type = is_valid_fs_type(mp->f_fstypename);
154		#endif
155
156	<	#ifdef LINUX
156	>	#if defined(LINUX) || defined(CYGWIN)
157		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
158		return NULL;
159		}
#	Line 160 | Line 163 | disk_stat_t *get_disk_stats(int *entries){
163		continue;
164		}
165
166	<	valid_type=0;
164	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
165	<	if(strcmp(mp->mnt_type, fs_types[x]) ==0){
166	<	valid_type=1;
167	<	break;
168	<	}
169	<	}
166	>	valid_type = is_valid_fs_type(mp->mnt_type);
167		#endif
168
169		#ifdef SOLARIS
#	Line 177 | Line 174 | disk_stat_t *get_disk_stats(int *entries){
174		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
175		continue;
176		}
177	<	valid_type=0;
181	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
182	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
183	<	valid_type=1;
184	<	break;
185	<	}
186	<	}
177	>	valid_type = is_valid_fs_type(mp.mnt_fstype);
178		#endif
179
180		if(valid_type){
#	Line 199 | Line 190 | disk_stat_t *get_disk_stats(int *entries){
190		}
191
192		disk_ptr=disk_stats+num_disks;
193	<	#ifdef FREEBSD
193	>	#ifdef ALLBSD
194		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
195		return NULL;
196		}
#	Line 221 | Line 212 | disk_stat_t *get_disk_stats(int *entries){
212		/* Freebsd doesn't have a "available" inodes */
213		disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
214		#endif
215	<	#ifdef LINUX
215	>	#if defined(LINUX) || defined(CYGWIN)
216		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
217		return NULL;
218		}
#	Line 275 | Line 266 | disk_stat_t *get_disk_stats(int *entries){
266
267		*entries=num_disks;
268
269	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
270	<	#if defined(LINUX) || defined(SOLARIS)
269	>	/* If this fails, there is very little i can do about it, so
270	>	I'll ignore it :) */
271	>	#if defined(LINUX) || defined(CYGWIN)
272	>	endmntent(f);
273	>	#endif
274	>	#if defined(SOLARIS)
275		fclose(f);
276		#endif
277
#	Line 292 | Line 287 | void diskio_stat_init(int start, int end, diskio_stat_
287		}
288		}
289
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	–
290		diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
291
292		if(diskio_stats==NULL){
#	Line 456 | Line 326 | typedef struct {
326		diskio_stat_t *get_diskio_stats(int *entries){
327
328		static int sizeof_diskio_stats=0;
329	+	#ifndef LINUX
330		diskio_stat_t *diskio_stats_ptr;
331	+	#endif
332
333		#ifdef SOLARIS
334		kstat_ctl_t *kc;
#	Line 467 | Line 339 | diskio_stat_t *get_diskio_stats(int *entries){
339		FILE *f;
340		char *line_ptr;
341		int major, minor;
470	–	char dev_letter;
342		int has_pp_stats = 1;
343		static partition *parts = NULL;
344		static int alloc_parts = 0;
345		int i, n;
346		time_t now;
347	+	const char *format;
348		#endif
349		#ifdef FREEBSD
350		static struct statinfo stats;
#	Line 483 | Line 355 | diskio_stat_t *get_diskio_stats(int *entries){
355		long sel_gen;
356		struct devstat *dev_ptr;
357		#endif
358	+	#ifdef NETBSD
359	+	struct disk_sysctl *stats;
360	+	int num_disks, i;
361	+	int mib[3];
362	+	size_t size;
363	+	#endif
364	+
365		num_diskio=0;
366
367	+	#ifdef NETBSD
368	+	mib[0] = CTL_HW;
369	+	mib[1] = HW_DISKSTATS;
370	+	mib[2] = sizeof(struct disk_sysctl);
371	+
372	+	if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
373	+	return NULL;
374	+	}
375	+	num_disks = size / sizeof(struct disk_sysctl);
376	+
377	+	stats = malloc(size);
378	+	if (stats == NULL) {
379	+	return NULL;
380	+	}
381	+
382	+	if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) {
383	+	return NULL;
384	+	}
385	+
386	+	for (i = 0; i < num_disks; i++) {
387	+	u_int64_t rbytes, wbytes;
388	+
389	+	#ifdef HAVE_DK_RBYTES
390	+	rbytes = stats[i].dk_rbytes;
391	+	wbytes = stats[i].dk_wbytes;
392	+	#else
393	+	/* Before 1.7, NetBSD merged reads and writes. */
394	+	rbytes = wbytes = stats[i].dk_bytes;
395	+	#endif
396	+
397	+	/* Don't keep stats for disks that have never been used. */
398	+	if (rbytes == 0 && wbytes == 0) {
399	+	continue;
400	+	}
401	+
402	+	diskio_stats = diskio_stat_malloc(num_diskio + 1,
403	+	&sizeof_diskio_stats,
404	+	diskio_stats);
405	+	if (diskio_stats == NULL) {
406	+	return NULL;
407	+	}
408	+	diskio_stats_ptr = diskio_stats + num_diskio;
409	+
410	+	diskio_stats_ptr->read_bytes = rbytes;
411	+	diskio_stats_ptr->write_bytes = wbytes;
412	+	if (diskio_stats_ptr->disk_name != NULL) {
413	+	free(diskio_stats_ptr->disk_name);
414	+	}
415	+	diskio_stats_ptr->disk_name = strdup(stats[i].dk_name);
416	+	diskio_stats_ptr->systime = time(NULL);
417	+
418	+	num_diskio++;
419	+	}
420	+
421	+	free(stats);
422	+	#endif
423	+
424		#ifdef FREEBSD
425		if (!stats_init) {
426		stats.dinfo=malloc(sizeof(struct devinfo));
427		if(stats.dinfo==NULL) return NULL;
428	+	bzero(stats.dinfo, sizeof(struct devinfo));
429		stats_init = 1;
430		}
431	+	#ifdef FREEBSD5
432	+	if ((devstat_getdevs(NULL, &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 (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;
438	+	#else
439		if ((getdevs(&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 (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	+	#endif
446
447		for(counter=0;counter<stats.dinfo->numdevs;counter++){
448		dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
#	Line 505 | Line 451 | diskio_stat_t *get_diskio_stats(int *entries){
451		* devices.. like mem, proc.. and also doesn't report floppy
452		* drives etc unless they are doing stuff :)
453		*/
454	+	#ifdef FREEBSD5
455	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
456	+	#else
457		if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
458	+	#endif
459		if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
460		return NULL;
461		}
462		diskio_stats_ptr=diskio_stats+num_diskio;
463	<
463	>
464	>	#ifdef FREEBSD5
465	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
466	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
467	>	#else
468		diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
469		diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
470	+	#endif
471		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
472		asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
473		diskio_stats_ptr->systime=time(NULL);
#	Line 548 | Line 503 | diskio_stat_t *get_diskio_stats(int *entries){
503
504		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
505
506	<	diskio_stats_ptr->disk_name=drive_map(ksp->ks_name);
506	>	diskio_stats_ptr->disk_name=strdup((char *) get_svr_from_bsd(ksp->ks_name));
507		diskio_stats_ptr->systime=time(NULL);
508		num_diskio++;
509		}
#	Line 562 | Line 517 | diskio_stat_t *get_diskio_stats(int *entries){
517		n = 0;
518
519		/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
520	<	have statistics in here too, so we can use those directly. */
520	>	have statistics in here too, so we can use those directly.
521	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
522	>	the same format. */
523
524	<	f = fopen("/proc/partitions", "r");
524	>	f = fopen("/proc/diskstats", "r");
525	>	format = " %d %d %19s %*d %*d %lld %*d %*d %*d %lld";
526	>	if (f == NULL) {
527	>	f = fopen("/proc/partitions", "r");
528	>	format = " %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld";
529	>	}
530		if (f == NULL) goto out;
531		now = time(NULL);
532
#	Line 573 | Line 535 | diskio_stat_t *get_diskio_stats(int *entries){
535		char *s;
536		long long rsect, wsect;
537
538	<	int nr = sscanf(line_ptr,
577	<	" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld",
538	>	int nr = sscanf(line_ptr, format,
539		&major, &minor, name, &rsect, &wsect);
540		if (nr < 3) continue;
580	–	if (nr < 5) {
581	–	has_pp_stats = 0;
582	–	rsect = 0;
583	–	wsect = 0;
584	–	}
541
542		/* Skip device names ending in numbers, since they're
543		partitions. */
#	Line 590 | Line 546 | diskio_stat_t *get_diskio_stats(int *entries){
546		--s;
547		if (*s >= '0' && *s <= '9') continue;
548
549	+	if (nr < 5) {
550	+	has_pp_stats = 0;
551	+	rsect = 0;
552	+	wsect = 0;
553	+	}
554	+
555		diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
556		diskio_stats);
557		if (diskio_stats == NULL) goto out;
#	Line 683 | Line 645 | diskio_stat_t *get_diskio_stats(int *entries){
645		num_diskio = n;
646		out:
647		if (f != NULL) fclose(f);
648	+	#endif
649
650	+	#ifdef CYGWIN
651	+	return NULL;
652		#endif
653	+
654		*entries=num_diskio;
655
656		return diskio_stats;

Diff Legend

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