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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 1.3 by tdb, Thu Feb 20 13:19:52 2003 UTC vs.
Revision 1.14 by pajs, Tue Mar 11 12:57:07 2003 UTC

#	Line 22 | Line 22
22		#include "config.h"
23		#endif
24
25	–	#include "statgrab.h"
25		#include <stdlib.h>
27	–	#include <stdio.h>
26		#include <string.h>
27	+	#include "statgrab.h"
28
29		#ifdef SOLARIS
30	+	#include <stdio.h>
31		#include <sys/mnttab.h>
32	–	#include <sys/types.h>
32		#include <sys/statvfs.h>
33	<
33	>	#include <kstat.h>
34		#define VALID_FS_TYPES {"ufs", "tmpfs"}
35	+	#endif
36
37	+	#ifdef LINUX
38	+	#include <stdio.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		#define START_VAL 1
#	Line 60 | Line 66 | void init_disk_stat(int start, int end, disk_stat_t *d
66
67		disk_stats++;
68		}
63	–
69		}
70
71		disk_stat_t *get_disk_stats(int *entries){
#	Line 70 | Line 75 | disk_stat_t *get_disk_stats(int *entries){
75
76		char *fs_types[] = VALID_FS_TYPES;
77		int x, valid_type;
73	–
78		int num_disks=0;
75	–	struct mnttab mp;
76	–	struct statvfs fs;
79		FILE *f;
80
81		disk_stat_t *disk_ptr;
82
83	+	#ifdef SOLARIS
84	+	struct mnttab mp;
85	+	struct statvfs fs;
86	+	#endif
87	+	#ifdef LINUX
88	+	struct mntent *mp;
89	+	struct statfs fs;
90	+	#endif
91	+
92		if(watermark==-1){
93		disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
94		if(disk_stats==NULL){
#	Line 86 | Line 97 | disk_stat_t *get_disk_stats(int *entries){
97		watermark=START_VAL;
98		init_disk_stat(0, watermark-1, disk_stats);
99		}
100	+	#ifdef LINUX
101	+	if ((f=setmntent("/etc/mtab", "r" ))==NULL){
102	+	return NULL;
103	+	}
104
105	+	while((mp=getmntent(f))){
106	+	if((statfs(mp->mnt_dir, &fs)) !=0){
107	+	continue;
108	+	}
109
110	+	valid_type=0;
111	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
112	+	if(strcmp(mp->mnt_type, fs_types[x]) ==0){
113	+	valid_type=1;
114	+	break;
115	+	}
116	+	}
117	+	#endif
118	+
119	+	#ifdef SOLARIS
120		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
121		return NULL;
122		}
#	Line 95 | Line 124 | disk_stat_t *get_disk_stats(int *entries){
124		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
125		continue;
126		}
98	–
127		valid_type=0;
128		for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
129		if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
#	Line 103 | Line 131 | disk_stat_t *get_disk_stats(int *entries){
131		break;
132		}
133		}
134	+	#endif
135
136		if(valid_type){
137		if(num_disks>watermark-1){
#	Line 117 | Line 146 | disk_stat_t *get_disk_stats(int *entries){
146		}
147
148		disk_ptr=disk_stats+num_disks;
149	<
149	>	#ifdef LINUX
150	>	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
151	>	return NULL;
152	>	}
153	>
154	>	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){
155	>	return NULL;
156	>	}
157	>
158	>	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){
159	>	return NULL;
160	>	}
161	>	disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
162	>	disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail;
163	>	disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree);
164	>
165	>	disk_ptr->total_inodes=(long long)fs.f_files;
166	>	disk_ptr->free_inodes=(long long)fs.f_ffree;
167	>	/* Linux doesn't have a "available" inodes */
168	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
169	>	#endif
170	>
171	>	#ifdef SOLARIS
172		/* Memory leak in event of realloc failing */
173		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
174	<	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
175	<	of a k each */
174	>	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
175	>	* be upwards of a k each
176	>	*/
177		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
178		return NULL;
179		}
#	Line 141 | Line 193 | disk_stat_t *get_disk_stats(int *entries){
193		disk_ptr->total_inodes=(long long)fs.f_files;
194		disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
195		disk_ptr->free_inodes=(long long)fs.f_favail;
196	<
196	>	#endif
197		num_disks++;
198		}
199		}
#	Line 154 | Line 206 | disk_stat_t *get_disk_stats(int *entries){
206		return disk_stats;
207
208		}
209	+	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
210
211	+	for(diskio_stats+=start; start<end; start++){
212	+	diskio_stats->disk_name=NULL;
213	+
214	+	diskio_stats++;
215	+	}
216	+	}
217	+
218	+	diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
219	+
220	+	if(diskio_stats==NULL){
221	+
222	+	if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
223	+	return NULL;
224	+	}
225	+	diskio_stat_init(0, needed_entries, diskio_stats);
226	+	*cur_entries=needed_entries;
227	+
228	+	return diskio_stats;
229	+	}
230	+
231	+
232	+	if(*cur_entries<needed_entries){
233	+	diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
234	+	if(diskio_stats==NULL){
235	+	return NULL;
236	+	}
237	+	diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
238	+	*cur_entries=needed_entries;
239	+	}
240	+
241	+	return diskio_stats;
242	+	}
243	+
244	+	static diskio_stat_t *diskio_stats=NULL;
245	+	static int num_diskio=0;
246	+
247		diskio_stat_t *get_diskio_stats(int *entries){
248
249	<	/* Do jibble */
250	<	return NULL;
249	>	static int sizeof_diskio_stats=0;
250	>	diskio_stat_t *diskio_stats_ptr;
251	>
252	>	#ifdef SOLARIS
253	>	kstat_ctl_t *kc;
254	>	kstat_t *ksp;
255	>	kstat_io_t kios;
256	>	#endif
257	>	#ifdef LINUX
258	>	FILE *f;
259	>	char *line_ptr;
260	>	int major, minor;
261	>	char dev_letter;
262	>	#endif
263	>	num_diskio=0;
264	>
265	>	#ifdef SOLARIS
266	>	if ((kc = kstat_open()) == NULL) {
267	>	return NULL;
268	>	}
269	>
270	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
271	>	if (!strcmp(ksp->ks_class, "disk")) {
272	>
273	>	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
274	>	/* We dont want metadevices appearins as num_diskio */
275	>	if(strcmp(ksp->ks_module, "md")==0) continue;
276	>	if((kstat_read(kc, ksp, &kios))==-1){
277	>	}
278	>
279	>	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
280	>	kstat_close(kc);
281	>	return NULL;
282	>	}
283	>	diskio_stats_ptr=diskio_stats+num_diskio;
284	>
285	>	diskio_stats_ptr->read_bytes=kios.nread;
286	>
287	>	diskio_stats_ptr->write_bytes=kios.nwritten;
288	>
289	>	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
290	>
291	>	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
292	>	diskio_stats_ptr->systime=time(NULL);
293	>	num_diskio++;
294	>	}
295	>	}
296	>
297	>	kstat_close(kc);
298	>	#endif
299	>
300	>	#ifdef LINUX
301	>	f=fopen("/proc/stat", "r");
302	>	if(f==NULL){
303	>	*entries=0;
304	>	fclose(f);
305	>	return NULL;
306	>	}
307	>	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
308	>	*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;
323	>
324	>
325	>	if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \
326	>	&major, \
327	>	&minor, \
328	>	&diskio_stats_ptr->read_bytes, \
329	>	&diskio_stats_ptr->write_bytes))!=4) {
330	>	continue;
331	>	}
332	>
333	>	/* We read the number of blocks. Blocks are stored in 512 bytes */
334	>	diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
335	>	diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;
336	>
337	>	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
338	>
339	>	switch(major){
340	>	case 2:
341	>	if(minor==0){
342	>	diskio_stats_ptr->disk_name=strdup("fd0");
343	>	}
344	>	break;
345	>
346	>	case 3:
347	>	if(minor==0){
348	>	diskio_stats_ptr->disk_name=strdup("hda");
349	>	}else{
350	>	diskio_stats_ptr->disk_name=strdup("hdb");
351	>	}
352	>	break;
353	>
354	>	case 22:
355	>	if(minor==0){
356	>	diskio_stats_ptr->disk_name=strdup("hdc");
357	>	}else{
358	>	diskio_stats_ptr->disk_name=strdup("hdd");
359	>	}
360	>	break;
361	>	case 8:
362	>	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);
365	>	break;
366	>	default:
367	>	/* 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);
370	>	break;
371	>	}
372	>
373	>	diskio_stats_ptr->systime=time(NULL);
374	>	num_diskio++;
375	>	}
376	>
377	>	#endif
378	>	*entries=num_diskio;
379	>
380	>	return diskio_stats;
381	>	}
382	>
383	>	diskio_stat_t *get_diskio_stats_diff(int *entries){
384	>	static diskio_stat_t *diskio_stats_diff=NULL;
385	>	static int sizeof_diskio_stats_diff=0;
386	>	diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr;
387	>	int disks, x, y;
388	>
389	>	if(diskio_stats==NULL){
390	>	diskio_stats_ptr=get_diskio_stats(&disks);
391	>	*entries=disks;
392	>	return diskio_stats_ptr;
393	>	}
394	>
395	>	diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
396	>	if(diskio_stats_diff==NULL){
397	>	return NULL;
398	>	}
399	>
400	>	diskio_stats_diff_ptr=diskio_stats_diff;
401	>	diskio_stats_ptr=diskio_stats;
402	>
403	>	for(disks=0;disks<num_diskio;disks++){
404	>	if(diskio_stats_diff_ptr->disk_name!=NULL){
405	>	free(diskio_stats_diff_ptr->disk_name);
406	>	}
407	>	diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
408	>	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
409	>	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
410	>	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
411	>
412	>	diskio_stats_diff_ptr++;
413	>	diskio_stats_ptr++;
414	>	}
415	>
416	>	diskio_stats_ptr=get_diskio_stats(&disks);
417	>	diskio_stats_diff_ptr=diskio_stats_diff;
418	>
419	>	for(x=0;x<sizeof_diskio_stats_diff;x++){
420	>
421	>	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
422	>	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
423	>	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
424	>	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
425	>	}else{
426	>	diskio_stats_ptr=diskio_stats;
427	>	for(y=0;y<disks;y++){
428	>	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
429	>	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
430	>	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
431	>	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
432	>
433	>	break;
434	>	}
435	>
436	>	diskio_stats_ptr++;
437	>	}
438	>	}
439	>
440	>	diskio_stats_ptr++;
441	>	diskio_stats_diff_ptr++;
442	>
443	>	}
444	>
445	>	*entries=sizeof_diskio_stats_diff;
446	>	return diskio_stats_diff;
447		}

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