src/libstatgrab/disk_stats.c

/* 
 * i-scream central monitoring system
 * http://www.i-scream.org.uk
 * Copyright (C) 2000-2002 i-scream
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "statgrab.h"

#ifdef SOLARIS
#include <sys/mnttab.h>
#include <sys/statvfs.h>
#include <kstat.h>
#define VALID_FS_TYPES {"ufs", "tmpfs"}
#endif

#ifdef LINUX
#include <sys/vfs.h>
#include <mntent.h>
#include "tools.h"
#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
#endif

#ifdef FREEBSD
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <sys/dkstat.h>
#include <devstat.h>
#define VALID_FS_TYPES {"ufs", "mfs"}
#endif
#define START_VAL 1

char *copy_string(char *orig_ptr, const char *newtext){

        /* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
        orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
        if(orig_ptr==NULL){
                return NULL;
        }
        strcpy(orig_ptr, newtext);

        return orig_ptr;
}


void init_disk_stat(int start, int end, disk_stat_t *disk_stats){

        for(disk_stats+=start; start<=end; start++){
                disk_stats->device_name=NULL;
                disk_stats->fs_type=NULL;
                disk_stats->mnt_point=NULL;
                
                disk_stats++;
        }
}

disk_stat_t *get_disk_stats(int *entries){

        static disk_stat_t *disk_stats;
        static int watermark=-1;

        char *fs_types[] = VALID_FS_TYPES;
        int x, valid_type;
        int num_disks=0;
#if defined(LINUX) || defined (SOLARIS)
        FILE *f;
#endif

        disk_stat_t *disk_ptr;

#ifdef SOLARIS
        struct mnttab mp;
        struct statvfs fs;
#endif
#ifdef LINUX
        struct mntent *mp;
        struct statfs fs;
#endif
#ifdef FREEBSD
        int nummnt;
        struct statfs *mp;
#endif

        if(watermark==-1){
                disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
                if(disk_stats==NULL){
                        return NULL;
                }
                watermark=START_VAL;
                init_disk_stat(0, watermark-1, disk_stats);
        }
#ifdef FREEBSD
        nummnt=getmntinfo(&mp , MNT_LOCAL);
        if (nummnt<=0){
                return NULL;
        }
        for(;nummnt--; mp++){
                valid_type=0;
                for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
                        if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
                                valid_type=1;
                                break;
                        }
                }
#endif

#ifdef LINUX
        if ((f=setmntent("/etc/mtab", "r" ))==NULL){
                return NULL;
        }

        while((mp=getmntent(f))){
                if((statfs(mp->mnt_dir, &fs)) !=0){
                        continue;
                }       

                valid_type=0;
                for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
                        if(strcmp(mp->mnt_type, fs_types[x]) ==0){
                                valid_type=1;
                                break;
                        }
                }
#endif

#ifdef SOLARIS
        if ((f=fopen("/etc/mnttab", "r" ))==NULL){
                return NULL;
        }
        while((getmntent(f, &mp)) == 0){
                if ((statvfs(mp.mnt_mountp, &fs)) !=0){
                        continue;
                }
                valid_type=0;
                for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
                        if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
                                valid_type=1;
                                break;
                        }
                }
#endif

                if(valid_type){
                        if(num_disks>watermark-1){
                                disk_ptr=disk_stats;
                                if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
                                        disk_stats=disk_ptr;
                                        return NULL;
                                }

                                watermark=watermark*2;
                                init_disk_stat(num_disks, watermark-1, disk_stats);
                        }

                        disk_ptr=disk_stats+num_disks;
#ifdef FREEBSD
                        if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
                                return NULL;
                        }

                        if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
                                return NULL;
                        }

                        if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
                                return NULL;
                        }

                        disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
                        disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
                        disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);

                        disk_ptr->total_inodes=(long long)mp->f_files;
                        disk_ptr->free_inodes=(long long)mp->f_ffree;
                        /* Freebsd doesn't have a "available" inodes */
                        disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
#endif
#ifdef LINUX
                        if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
                                return NULL;
                        }
                                
                        if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){     
                                return NULL;
                        }

                        if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){
                                return NULL;
                        }
                        disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
                        disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail;
                        disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree);

                        disk_ptr->total_inodes=(long long)fs.f_files;
                        disk_ptr->free_inodes=(long long)fs.f_ffree;
                        /* Linux doesn't have a "available" inodes */
                        disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
#endif

#ifdef SOLARIS
                        /* Memory leak in event of realloc failing */
                        /* Maybe make this char[bigenough] and do strncpy's and put a null in the end? 
                         * Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob 
                         * be upwards of a k each 
                         */
                        if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
                                return NULL;
                        }

                        if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
                                return NULL;
                        }
        
                        if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
                                return NULL;
                        }
                        
                        disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
                        disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
                        disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree);
                
                        disk_ptr->total_inodes=(long long)fs.f_files;
                        disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
                        disk_ptr->free_inodes=(long long)fs.f_favail;
#endif
                        num_disks++;
                }
        }

        *entries=num_disks;     

        /* If this fails, there is very little i can do about it, so i'll ignore it :) */
#if defined(LINUX) || defined(SOLARIS)
        fclose(f);
#endif

        return disk_stats;

}
void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){

        for(diskio_stats+=start; start<end; start++){
                diskio_stats->disk_name=NULL;
                
                diskio_stats++;
        }
}

diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){

        if(diskio_stats==NULL){

                if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
                        return NULL;
                }
                diskio_stat_init(0, needed_entries, diskio_stats);
                *cur_entries=needed_entries;

                return diskio_stats;
        }


        if(*cur_entries<needed_entries){
                diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
                if(diskio_stats==NULL){
                        return NULL;
                }
                diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
                *cur_entries=needed_entries;
        }

        return diskio_stats;
}

static diskio_stat_t *diskio_stats=NULL;        
static int num_diskio=0;        

diskio_stat_t *get_diskio_stats(int *entries){

        static int sizeof_diskio_stats=0;
        diskio_stat_t *diskio_stats_ptr;

#ifdef SOLARIS
        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_io_t kios;
#endif
#ifdef LINUX
        FILE *f;
        char *line_ptr;
        int major, minor;
        char dev_letter;
#endif
#ifdef FREEBSD
        struct statinfo stats;
        int counter;
        struct device_selection *dev_sel = NULL;
        int n_selected, n_selections;
        long sel_gen;
        struct devstat *dev_ptr;
#endif
        num_diskio=0;

#ifdef FREEBSD
        stats.dinfo=malloc(sizeof(struct devinfo));
        if(stats.dinfo==NULL) return NULL;
        if ((getdevs(&stats)) < 0) return NULL;
        /* Not aware of a get all devices, so i said 999. If we ever
         * find a machine with more than 999 disks, then i'll change
         * this number :)
         */
        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;

        for(counter=0;counter<stats.dinfo->numdevs;counter++){
                dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];

                /* Throw away devices that have done nothing, ever.. Eg "odd" 
                 * devices.. like mem, proc.. and also doesn't report floppy
                 * drives etc unless they are doing stuff :)
                 */
                if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
                if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
                        return NULL;
                }
                diskio_stats_ptr=diskio_stats+num_diskio;
                
                diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
                diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
                if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
                asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
                diskio_stats_ptr->systime=time(NULL);

                num_diskio++;
        }
        free(dev_sel);
        free(stats.dinfo);

#endif
#ifdef SOLARIS
        if ((kc = kstat_open()) == NULL) {
                return NULL;
        }

        for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
                if (!strcmp(ksp->ks_class, "disk")) {

                        if(ksp->ks_type != KSTAT_TYPE_IO) continue;
                        /* We dont want metadevices appearins as num_diskio */
                        if(strcmp(ksp->ks_module, "md")==0) continue;
                        if((kstat_read(kc, ksp, &kios))==-1){   
                        }
                        
                        if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
                                kstat_close(kc);
                                return NULL;
                        }
                        diskio_stats_ptr=diskio_stats+num_diskio;
                        
                        diskio_stats_ptr->read_bytes=kios.nread;
                        
                        diskio_stats_ptr->write_bytes=kios.nwritten;

                        if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);

                        diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
                        diskio_stats_ptr->systime=time(NULL);
                        num_diskio++;
                }
        }

        kstat_close(kc);
#endif

#ifdef LINUX
        f=fopen("/proc/stat", "r");
        if(f==NULL){
                *entries=0;
                fclose(f);
                return NULL;
        }
        if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
                *entries=0;
                fclose(f);
                return NULL;
        }
        while((line_ptr=strchr(line_ptr, ' '))!=NULL){
                line_ptr++;
                if(*line_ptr=='\0'){
                        break;
                }
                if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
                        fclose(f);
                        *entries=0;
                        return NULL;
                }
                diskio_stats_ptr=diskio_stats+num_diskio;


                if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \
                        &major, \
                        &minor, \
                        &diskio_stats_ptr->read_bytes, \
                        &diskio_stats_ptr->write_bytes))!=4) {
                                continue;
                }

                /* We read the number of blocks. Blocks are stored in 512 bytes */
                diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
                diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;

                if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);

                switch(major){
                        case 2:
                                if(minor==0){
                                        diskio_stats_ptr->disk_name=strdup("fd0");
                                }
                                break;

                        case 3: 
                                if(minor==0){
                                        diskio_stats_ptr->disk_name=strdup("hda");
                                }else{
                                        diskio_stats_ptr->disk_name=strdup("hdb");
                                }
                                break;

                        case 22:
                                if(minor==0){
                                        diskio_stats_ptr->disk_name=strdup("hdc");
                                }else{
                                        diskio_stats_ptr->disk_name=strdup("hdd");
                                }
                                break;
                        case 8:
                                dev_letter='a'+(minor/16);
                                diskio_stats_ptr->disk_name=malloc(4);
                                snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter);
                                break;
                        default:
                                /* I have no idea what it is then :) */
                                diskio_stats_ptr->disk_name=malloc(16);
                                snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor);
                                break;
                }

                diskio_stats_ptr->systime=time(NULL);
                num_diskio++;
        }

        fclose(f);

#endif
        *entries=num_diskio;

        return diskio_stats;
}

diskio_stat_t *get_diskio_stats_diff(int *entries){
        static diskio_stat_t *diskio_stats_diff=NULL;
        static int sizeof_diskio_stats_diff=0;
        diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr;
        int disks, x, y;

        if(diskio_stats==NULL){
                diskio_stats_ptr=get_diskio_stats(&disks);
                *entries=disks;
                return diskio_stats_ptr;
        }

        diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
        if(diskio_stats_diff==NULL){
                return NULL;
        }

        diskio_stats_diff_ptr=diskio_stats_diff;
        diskio_stats_ptr=diskio_stats;

        for(disks=0;disks<num_diskio;disks++){
                if(diskio_stats_diff_ptr->disk_name!=NULL){
                        free(diskio_stats_diff_ptr->disk_name);
                }
                diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
                diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
                diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
                diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;

                diskio_stats_diff_ptr++;
                diskio_stats_ptr++;
        }

        diskio_stats_ptr=get_diskio_stats(&disks);
        diskio_stats_diff_ptr=diskio_stats_diff;

        for(x=0;x<sizeof_diskio_stats_diff;x++){

                if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
                        diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
                        diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
                        diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
                }else{
                        diskio_stats_ptr=diskio_stats;
                        for(y=0;y<disks;y++){
                                if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
                                        diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
                                        diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
                                        diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;

                                        break;
                                }
                                
                                diskio_stats_ptr++;
                        }
                }

                diskio_stats_ptr++;
                diskio_stats_diff_ptr++;        

        }
        
        *entries=sizeof_diskio_stats_diff;
        return diskio_stats_diff;
}
Revision:	1.17
Committed:	Sat Apr 5 23:56:25 2003 UTC (21 years, 1 month ago) by pajs
Content type:	text/plain
Branch:	MAIN
CVS Tags:	LIBSTATGRAB_0_4
Changes since 1.16:	+46 -2 lines
Log Message:	Should now work on freebsd.
#	User	Rev	Content
1	pajs	1.1	/*
2			* i-scream central monitoring system
3			* http://www.i-scream.org.uk
4			* Copyright (C) 2000-2002 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
8			* as published by the Free Software Foundation; either version 2
9			* of the License, or (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19			*/
20
21			#ifdef HAVE_CONFIG_H
22			#include "config.h"
23			#endif
24
25	pajs	1.17	#include <stdio.h>
26	pajs	1.1	#include <stdlib.h>
27			#include <string.h>
28	tdb	1.7	#include "statgrab.h"
29	pajs	1.1
30			#ifdef SOLARIS
31			#include <sys/mnttab.h>
32			#include <sys/statvfs.h>
33	pajs	1.4	#include <kstat.h>
34	pajs	1.1	#define VALID_FS_TYPES {"ufs", "tmpfs"}
35			#endif
36
37	pajs	1.9	#ifdef LINUX
38			#include <sys/vfs.h>
39			#include <mntent.h>
40	pajs	1.10	#include "tools.h"
41	pajs	1.9	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
42			#endif
43
44	pajs	1.16	#ifdef FREEBSD
45			#include <sys/param.h>
46			#include <sys/ucred.h>
47			#include <sys/mount.h>
48	pajs	1.17	#include <sys/dkstat.h>
49			#include <devstat.h>
50	pajs	1.16	#define VALID_FS_TYPES {"ufs", "mfs"}
51			#endif
52	pajs	1.1	#define START_VAL 1
53
54			char copy_string(char orig_ptr, const char *newtext){
55
56			/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
57			orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
58			if(orig_ptr==NULL){
59			return NULL;
60			}
61			strcpy(orig_ptr, newtext);
62
63			return orig_ptr;
64			}
65
66
67			void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
68
69			for(disk_stats+=start; start<=end; start++){
70			disk_stats->device_name=NULL;
71			disk_stats->fs_type=NULL;
72			disk_stats->mnt_point=NULL;
73
74			disk_stats++;
75			}
76			}
77
78			disk_stat_t get_disk_stats(int entries){
79
80			static disk_stat_t *disk_stats;
81			static int watermark=-1;
82
83			char *fs_types[] = VALID_FS_TYPES;
84			int x, valid_type;
85			int num_disks=0;
86	pajs	1.16	#if defined(LINUX) \|\| defined (SOLARIS)
87	pajs	1.1	FILE *f;
88	pajs	1.16	#endif
89	pajs	1.1
90			disk_stat_t *disk_ptr;
91
92	pajs	1.9	#ifdef SOLARIS
93	tdb	1.13	struct mnttab mp;
94	pajs	1.9	struct statvfs fs;
95			#endif
96			#ifdef LINUX
97			struct mntent *mp;
98			struct statfs fs;
99			#endif
100	pajs	1.16	#ifdef FREEBSD
101			int nummnt;
102			struct statfs *mp;
103			#endif
104	pajs	1.9
105	pajs	1.1	if(watermark==-1){
106			disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
107			if(disk_stats==NULL){
108			return NULL;
109			}
110			watermark=START_VAL;
111			init_disk_stat(0, watermark-1, disk_stats);
112			}
113	pajs	1.16	#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	pajs	1.9	#ifdef LINUX
129			if ((f=setmntent("/etc/mtab", "r" ))==NULL){
130			return NULL;
131			}
132	pajs	1.1
133	pajs	1.9	while((mp=getmntent(f))){
134			if((statfs(mp->mnt_dir, &fs)) !=0){
135			continue;
136			}
137	pajs	1.1
138	pajs	1.9	valid_type=0;
139			for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
140			if(strcmp(mp->mnt_type, fs_types[x]) ==0){
141			valid_type=1;
142			break;
143			}
144			}
145			#endif
146
147			#ifdef SOLARIS
148	pajs	1.1	if ((f=fopen("/etc/mnttab", "r" ))==NULL){
149			return NULL;
150			}
151			while((getmntent(f, &mp)) == 0){
152			if ((statvfs(mp.mnt_mountp, &fs)) !=0){
153			continue;
154			}
155			valid_type=0;
156			for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
157			if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
158			valid_type=1;
159			break;
160			}
161			}
162	pajs	1.9	#endif
163	pajs	1.1
164			if(valid_type){
165			if(num_disks>watermark-1){
166			disk_ptr=disk_stats;
167			if((disk_stats=realloc(disk_stats, (watermark2 sizeof(disk_stat_t))))==NULL){
168			disk_stats=disk_ptr;
169			return NULL;
170			}
171
172			watermark=watermark*2;
173			init_disk_stat(num_disks, watermark-1, disk_stats);
174			}
175
176			disk_ptr=disk_stats+num_disks;
177	pajs	1.16	#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	pajs	1.9	#ifdef LINUX
200			if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
201			return NULL;
202			}
203
204			if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){
205			return NULL;
206			}
207
208			if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){
209			return NULL;
210			}
211			disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
212			disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail;
213			disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree);
214
215			disk_ptr->total_inodes=(long long)fs.f_files;
216			disk_ptr->free_inodes=(long long)fs.f_ffree;
217			/* Linux doesn't have a "available" inodes */
218			disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
219			#endif
220
221			#ifdef SOLARIS
222	pajs	1.1	/* Memory leak in event of realloc failing */
223			/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
224	pajs	1.9	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
225			* be upwards of a k each
226			*/
227	pajs	1.1	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
228			return NULL;
229			}
230
231			if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
232			return NULL;
233			}
234
235			if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
236			return NULL;
237			}
238
239			disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
240			disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
241			disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree);
242
243			disk_ptr->total_inodes=(long long)fs.f_files;
244			disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
245			disk_ptr->free_inodes=(long long)fs.f_favail;
246	pajs	1.9	#endif
247	pajs	1.1	num_disks++;
248			}
249			}
250
251			*entries=num_disks;
252
253			/* If this fails, there is very little i can do about it, so i'll ignore it :) */
254	pajs	1.16	#if defined(LINUX) \|\| defined(SOLARIS)
255	pajs	1.1	fclose(f);
256	pajs	1.16	#endif
257	pajs	1.1
258			return disk_stats;
259
260			}
261	pajs	1.4	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
262
263			for(diskio_stats+=start; start<end; start++){
264			diskio_stats->disk_name=NULL;
265
266			diskio_stats++;
267			}
268			}
269
270			diskio_stat_t diskio_stat_malloc(int needed_entries, int cur_entries, diskio_stat_t *diskio_stats){
271
272			if(diskio_stats==NULL){
273
274			if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
275			return NULL;
276			}
277			diskio_stat_init(0, needed_entries, diskio_stats);
278			*cur_entries=needed_entries;
279
280			return diskio_stats;
281			}
282
283
284			if(*cur_entries<needed_entries){
285			diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
286			if(diskio_stats==NULL){
287			return NULL;
288			}
289			diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
290			*cur_entries=needed_entries;
291			}
292
293			return diskio_stats;
294			}
295
296			static diskio_stat_t *diskio_stats=NULL;
297	pajs	1.5	static int num_diskio=0;
298	pajs	1.4
299	tdb	1.3	diskio_stat_t get_diskio_stats(int entries){
300	pajs	1.2
301	pajs	1.4	static int sizeof_diskio_stats=0;
302			diskio_stat_t *diskio_stats_ptr;
303
304	pajs	1.10	#ifdef SOLARIS
305	pajs	1.4	kstat_ctl_t *kc;
306			kstat_t *ksp;
307			kstat_io_t kios;
308	pajs	1.10	#endif
309			#ifdef LINUX
310			FILE *f;
311			char *line_ptr;
312			int major, minor;
313			char dev_letter;
314			#endif
315	pajs	1.17	#ifdef FREEBSD
316			struct statinfo stats;
317			int counter;
318			struct device_selection *dev_sel = NULL;
319			int n_selected, n_selections;
320			long sel_gen;
321			struct devstat *dev_ptr;
322			#endif
323	pajs	1.10	num_diskio=0;
324	pajs	1.4
325	pajs	1.17	#ifdef FREEBSD
326			stats.dinfo=malloc(sizeof(struct devinfo));
327			if(stats.dinfo==NULL) return NULL;
328			if ((getdevs(&stats)) < 0) return NULL;
329			/* Not aware of a get all devices, so i said 999. If we ever
330			* find a machine with more than 999 disks, then i'll change
331			* this number :)
332			*/
333			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;
334
335			for(counter=0;counter<stats.dinfo->numdevs;counter++){
336			dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
337
338			/* Throw away devices that have done nothing, ever.. Eg "odd"
339			* devices.. like mem, proc.. and also doesn't report floppy
340			* drives etc unless they are doing stuff :)
341			*/
342			if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
343			if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
344			return NULL;
345			}
346			diskio_stats_ptr=diskio_stats+num_diskio;
347
348			diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
349			diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
350			if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
351			asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
352			diskio_stats_ptr->systime=time(NULL);
353
354			num_diskio++;
355			}
356			free(dev_sel);
357			free(stats.dinfo);
358
359			#endif
360	pajs	1.10	#ifdef SOLARIS
361	pajs	1.4	if ((kc = kstat_open()) == NULL) {
362			return NULL;
363			}
364
365			for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
366			if (!strcmp(ksp->ks_class, "disk")) {
367
368			if(ksp->ks_type != KSTAT_TYPE_IO) continue;
369	pajs	1.5	/* We dont want metadevices appearins as num_diskio */
370	pajs	1.4	if(strcmp(ksp->ks_module, "md")==0) continue;
371			if((kstat_read(kc, ksp, &kios))==-1){
372			}
373
374	pajs	1.5	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
375	pajs	1.4	kstat_close(kc);
376			return NULL;
377			}
378	pajs	1.5	diskio_stats_ptr=diskio_stats+num_diskio;
379	pajs	1.4
380			diskio_stats_ptr->read_bytes=kios.nread;
381
382			diskio_stats_ptr->write_bytes=kios.nwritten;
383
384			if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
385
386			diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
387	pajs	1.14	diskio_stats_ptr->systime=time(NULL);
388	pajs	1.5	num_diskio++;
389	pajs	1.4	}
390			}
391
392			kstat_close(kc);
393	pajs	1.10	#endif
394	pajs	1.4
395	pajs	1.10	#ifdef LINUX
396			f=fopen("/proc/stat", "r");
397			if(f==NULL){
398	pajs	1.11	*entries=0;
399			fclose(f);
400	pajs	1.10	return NULL;
401			}
402			if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
403	pajs	1.11	*entries=0;
404			fclose(f);
405	pajs	1.10	return NULL;
406			}
407			while((line_ptr=strchr(line_ptr, ' '))!=NULL){
408	pajs	1.11	line_ptr++;
409			if(*line_ptr=='\0'){
410			break;
411			}
412	pajs	1.10	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
413			fclose(f);
414	pajs	1.11	*entries=0;
415	pajs	1.10	return NULL;
416			}
417			diskio_stats_ptr=diskio_stats+num_diskio;
418
419
420	pajs	1.12	if((sscanf(line_ptr, "(%d,%d):(%d, %d, %lld, %*d, %lld)", \
421	pajs	1.10	&major, \
422			&minor, \
423			&diskio_stats_ptr->read_bytes, \
424	pajs	1.11	&diskio_stats_ptr->write_bytes))!=4) {
425			continue;
426			}
427	pajs	1.12
428			/* We read the number of blocks. Blocks are stored in 512 bytes */
429			diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
430			diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;
431	pajs	1.10
432			if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
433
434			switch(major){
435	pajs	1.11	case 2:
436			if(minor==0){
437			diskio_stats_ptr->disk_name=strdup("fd0");
438			}
439			break;
440
441	pajs	1.10	case 3:
442			if(minor==0){
443			diskio_stats_ptr->disk_name=strdup("hda");
444			}else{
445			diskio_stats_ptr->disk_name=strdup("hdb");
446			}
447			break;
448
449			case 22:
450			if(minor==0){
451			diskio_stats_ptr->disk_name=strdup("hdc");
452			}else{
453			diskio_stats_ptr->disk_name=strdup("hdd");
454			}
455	pajs	1.11	break;
456	pajs	1.10	case 8:
457			dev_letter='a'+(minor/16);
458			diskio_stats_ptr->disk_name=malloc(4);
459			snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter);
460	pajs	1.11	break;
461	pajs	1.10	default:
462			/* I have no idea what it is then :) */
463			diskio_stats_ptr->disk_name=malloc(16);
464			snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor);
465	pajs	1.11	break;
466	pajs	1.10	}
467
468	pajs	1.14	diskio_stats_ptr->systime=time(NULL);
469	pajs	1.10	num_diskio++;
470			}
471	pajs	1.16
472	pajs	1.15	fclose(f);
473	pajs	1.10
474			#endif
475	pajs	1.5	*entries=num_diskio;
476	pajs	1.4
477			return diskio_stats;
478	pajs	1.5	}
479
480	pajs	1.6	diskio_stat_t get_diskio_stats_diff(int entries){
481	pajs	1.5	static diskio_stat_t *diskio_stats_diff=NULL;
482			static int sizeof_diskio_stats_diff=0;
483			diskio_stat_t diskio_stats_diff_ptr, diskio_stats_ptr;
484			int disks, x, y;
485
486			if(diskio_stats==NULL){
487			diskio_stats_ptr=get_diskio_stats(&disks);
488			*entries=disks;
489			return diskio_stats_ptr;
490			}
491
492			diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
493			if(diskio_stats_diff==NULL){
494			return NULL;
495			}
496
497			diskio_stats_diff_ptr=diskio_stats_diff;
498			diskio_stats_ptr=diskio_stats;
499
500			for(disks=0;disks<num_diskio;disks++){
501			if(diskio_stats_diff_ptr->disk_name!=NULL){
502			free(diskio_stats_diff_ptr->disk_name);
503			}
504			diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
505			diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
506			diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
507			diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
508
509			diskio_stats_diff_ptr++;
510			diskio_stats_ptr++;
511			}
512
513			diskio_stats_ptr=get_diskio_stats(&disks);
514			diskio_stats_diff_ptr=diskio_stats_diff;
515
516			for(x=0;x<sizeof_diskio_stats_diff;x++){
517
518			if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
519			diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
520			diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
521			diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
522			}else{
523			diskio_stats_ptr=diskio_stats;
524			for(y=0;y<disks;y++){
525			if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
526			diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
527			diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
528			diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
529
530			break;
531			}
532
533			diskio_stats_ptr++;
534			}
535			}
536
537			diskio_stats_ptr++;
538			diskio_stats_diff_ptr++;
539
540			}
541	pajs	1.8
542			*entries=sizeof_diskio_stats_diff;
543	pajs	1.5	return diskio_stats_diff;
544	pajs	1.2	}