1 |
tdb |
1.48 |
/* |
2 |
tdb |
1.63 |
* i-scream libstatgrab |
3 |
tdb |
1.18 |
* http://www.i-scream.org |
4 |
tdb |
1.48 |
* Copyright (C) 2000-2004 i-scream |
5 |
pajs |
1.1 |
* |
6 |
tdb |
1.48 |
* This library is free software; you can redistribute it and/or |
7 |
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* modify it under the terms of the GNU Lesser General Public |
8 |
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* License as published by the Free Software Foundation; either |
9 |
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* version 2.1 of the License, or (at your option) any later version. |
10 |
pajs |
1.1 |
* |
11 |
tdb |
1.48 |
* This library is distributed in the hope that it will be useful, |
12 |
pajs |
1.1 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
tdb |
1.48 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 |
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* Lesser General Public License for more details. |
15 |
pajs |
1.1 |
* |
16 |
tdb |
1.48 |
* You should have received a copy of the GNU Lesser General Public |
17 |
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* License along with this library; if not, write to the Free Software |
18 |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
19 |
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* 02111-1307 USA |
20 |
tdb |
1.49 |
* |
21 |
tdb |
1.73 |
* $Id: disk_stats.c,v 1.72 2004/07/18 21:30:11 ats Exp $ |
22 |
pajs |
1.1 |
*/ |
23 |
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24 |
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#ifdef HAVE_CONFIG_H |
25 |
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#include "config.h" |
26 |
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#endif |
27 |
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|
28 |
pajs |
1.17 |
#include <stdio.h> |
29 |
pajs |
1.1 |
#include <stdlib.h> |
30 |
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#include <string.h> |
31 |
ats |
1.40 |
#include <time.h> |
32 |
tdb |
1.7 |
#include "statgrab.h" |
33 |
ats |
1.56 |
#include "vector.h" |
34 |
ats |
1.60 |
#include "tools.h" |
35 |
pajs |
1.1 |
|
36 |
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#ifdef SOLARIS |
37 |
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#include <sys/mnttab.h> |
38 |
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#include <sys/statvfs.h> |
39 |
pajs |
1.4 |
#include <kstat.h> |
40 |
tdb |
1.71 |
#define VALID_FS_TYPES {"ufs", "tmpfs", "vxfs"} |
41 |
pajs |
1.1 |
#endif |
42 |
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43 |
ats |
1.40 |
#if defined(LINUX) || defined(CYGWIN) |
44 |
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#include <mntent.h> |
45 |
pajs |
1.9 |
#include <sys/vfs.h> |
46 |
ats |
1.40 |
#endif |
47 |
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|
48 |
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#ifdef LINUX |
49 |
ats |
1.32 |
#define VALID_FS_TYPES {"adfs", "affs", "befs", "bfs", "efs", "ext2", \ |
50 |
tdb |
1.65 |
"ext3", "vxfs", "hfs", "hfsplus", "hpfs", "jffs", \ |
51 |
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"jffs2", "minix", "msdos", "ntfs", "qnx4", "ramfs", \ |
52 |
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"rootfs", "reiserfs", "sysv", "v7", "udf", "ufs", \ |
53 |
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"umsdos", "vfat", "xfs", "jfs"} |
54 |
pajs |
1.9 |
#endif |
55 |
ats |
1.40 |
|
56 |
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#ifdef CYGWIN |
57 |
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#define VALID_FS_TYPES {"user"} |
58 |
tdb |
1.39 |
#endif |
59 |
pajs |
1.9 |
|
60 |
ats |
1.31 |
#ifdef ALLBSD |
61 |
pajs |
1.16 |
#include <sys/param.h> |
62 |
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#include <sys/ucred.h> |
63 |
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#include <sys/mount.h> |
64 |
ats |
1.31 |
#endif |
65 |
tdb |
1.53 |
#if defined(FREEBSD) || defined(DFBSD) |
66 |
pajs |
1.17 |
#include <sys/dkstat.h> |
67 |
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#include <devstat.h> |
68 |
ats |
1.36 |
#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \ |
69 |
tdb |
1.65 |
"ufs", "mfs"} |
70 |
pajs |
1.16 |
#endif |
71 |
tdb |
1.51 |
#if defined(NETBSD) || defined(OPENBSD) |
72 |
ats |
1.34 |
#include <sys/param.h> |
73 |
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#include <sys/sysctl.h> |
74 |
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#include <sys/disk.h> |
75 |
ats |
1.35 |
#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \ |
76 |
tdb |
1.65 |
"ntfs"} |
77 |
ats |
1.34 |
#endif |
78 |
ats |
1.31 |
|
79 |
tdb |
1.73 |
#ifdef HPUX |
80 |
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#include <sys/param.h> |
81 |
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#include <sys/pstat.h> |
82 |
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#include <sys/types.h> |
83 |
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#include <sys/stat.h> |
84 |
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#include <sys/vfs.h> |
85 |
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#include <mntent.h> |
86 |
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#include <dirent.h> |
87 |
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#include <stdio.h> |
88 |
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#include <time.h> |
89 |
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#define VALID_FS_TYPES {"vxfs", "hfs"} |
90 |
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#endif |
91 |
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92 |
ats |
1.61 |
static void disk_stat_init(sg_fs_stats *d) { |
93 |
ats |
1.56 |
d->device_name = NULL; |
94 |
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d->fs_type = NULL; |
95 |
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d->mnt_point = NULL; |
96 |
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} |
97 |
pajs |
1.1 |
|
98 |
ats |
1.61 |
static void disk_stat_destroy(sg_fs_stats *d) { |
99 |
ats |
1.56 |
free(d->device_name); |
100 |
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free(d->fs_type); |
101 |
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free(d->mnt_point); |
102 |
pajs |
1.1 |
} |
103 |
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104 |
ats |
1.61 |
static int is_valid_fs_type(const char *type) { |
105 |
ats |
1.41 |
const char *types[] = VALID_FS_TYPES; |
106 |
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int i; |
107 |
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108 |
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for (i = 0; i < (sizeof types / sizeof *types); i++) { |
109 |
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if (strcmp(types[i], type) == 0) { |
110 |
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return 1; |
111 |
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} |
112 |
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} |
113 |
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return 0; |
114 |
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} |
115 |
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116 |
ats |
1.61 |
sg_fs_stats *sg_get_fs_stats(int *entries){ |
117 |
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VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 10, |
118 |
tdb |
1.65 |
disk_stat_init, disk_stat_destroy); |
119 |
pajs |
1.1 |
|
120 |
ats |
1.41 |
int valid_type; |
121 |
pajs |
1.1 |
int num_disks=0; |
122 |
tdb |
1.73 |
#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN) || defined(HPUX) |
123 |
pajs |
1.1 |
FILE *f; |
124 |
pajs |
1.16 |
#endif |
125 |
pajs |
1.1 |
|
126 |
ats |
1.61 |
sg_fs_stats *disk_ptr; |
127 |
pajs |
1.1 |
|
128 |
pajs |
1.9 |
#ifdef SOLARIS |
129 |
tdb |
1.13 |
struct mnttab mp; |
130 |
pajs |
1.9 |
struct statvfs fs; |
131 |
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#endif |
132 |
tdb |
1.73 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
133 |
pajs |
1.9 |
struct mntent *mp; |
134 |
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struct statfs fs; |
135 |
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#endif |
136 |
ats |
1.31 |
#ifdef ALLBSD |
137 |
pajs |
1.16 |
int nummnt; |
138 |
tdb |
1.70 |
#ifdef HAVE_STATVFS |
139 |
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struct statvfs *mp; |
140 |
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#else |
141 |
pajs |
1.16 |
struct statfs *mp; |
142 |
tdb |
1.70 |
#endif |
143 |
pajs |
1.16 |
#endif |
144 |
pajs |
1.9 |
|
145 |
ats |
1.31 |
#ifdef ALLBSD |
146 |
pajs |
1.16 |
nummnt=getmntinfo(&mp , MNT_LOCAL); |
147 |
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if (nummnt<=0){ |
148 |
ats |
1.72 |
sg_set_error_with_errno(SG_ERROR_GETMNTINFO, NULL); |
149 |
pajs |
1.16 |
return NULL; |
150 |
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} |
151 |
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for(;nummnt--; mp++){ |
152 |
ats |
1.41 |
valid_type = is_valid_fs_type(mp->f_fstypename); |
153 |
pajs |
1.16 |
#endif |
154 |
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|
155 |
tdb |
1.73 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
156 |
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#ifdef MNT_MNTTAB |
157 |
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if ((f=setmntent(MNT_MNTTAB, "r" ))==NULL){ |
158 |
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#else |
159 |
pajs |
1.9 |
if ((f=setmntent("/etc/mtab", "r" ))==NULL){ |
160 |
tdb |
1.73 |
#endif |
161 |
tdb |
1.66 |
sg_set_error(SG_ERROR_SETMNTENT, NULL); |
162 |
pajs |
1.9 |
return NULL; |
163 |
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} |
164 |
pajs |
1.1 |
|
165 |
pajs |
1.9 |
while((mp=getmntent(f))){ |
166 |
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if((statfs(mp->mnt_dir, &fs)) !=0){ |
167 |
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continue; |
168 |
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} |
169 |
pajs |
1.1 |
|
170 |
ats |
1.41 |
valid_type = is_valid_fs_type(mp->mnt_type); |
171 |
pajs |
1.9 |
#endif |
172 |
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173 |
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#ifdef SOLARIS |
174 |
pajs |
1.1 |
if ((f=fopen("/etc/mnttab", "r" ))==NULL){ |
175 |
ats |
1.72 |
sg_set_error_with_errno(SG_ERROR_OPEN, "/etc/mnttab"); |
176 |
pajs |
1.1 |
return NULL; |
177 |
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} |
178 |
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while((getmntent(f, &mp)) == 0){ |
179 |
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if ((statvfs(mp.mnt_mountp, &fs)) !=0){ |
180 |
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continue; |
181 |
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} |
182 |
ats |
1.41 |
valid_type = is_valid_fs_type(mp.mnt_fstype); |
183 |
pajs |
1.9 |
#endif |
184 |
pajs |
1.1 |
|
185 |
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if(valid_type){ |
186 |
ats |
1.56 |
if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) { |
187 |
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return NULL; |
188 |
pajs |
1.1 |
} |
189 |
ats |
1.56 |
disk_ptr=disk_stats+num_disks; |
190 |
pajs |
1.1 |
|
191 |
ats |
1.31 |
#ifdef ALLBSD |
192 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->device_name, mp->f_mntfromname) < 0) { |
193 |
pajs |
1.16 |
return NULL; |
194 |
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} |
195 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->fs_type, mp->f_fstypename) < 0) { |
196 |
pajs |
1.16 |
return NULL; |
197 |
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} |
198 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->mnt_point, mp->f_mntonname) < 0) { |
199 |
pajs |
1.16 |
return NULL; |
200 |
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} |
201 |
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|
202 |
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disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks; |
203 |
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disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail; |
204 |
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disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree); |
205 |
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206 |
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disk_ptr->total_inodes=(long long)mp->f_files; |
207 |
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disk_ptr->free_inodes=(long long)mp->f_ffree; |
208 |
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/* Freebsd doesn't have a "available" inodes */ |
209 |
|
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disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
210 |
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#endif |
211 |
tdb |
1.73 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
212 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->device_name, mp->mnt_fsname) < 0) { |
213 |
pajs |
1.9 |
return NULL; |
214 |
|
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} |
215 |
|
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|
216 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->fs_type, mp->mnt_type) < 0) { |
217 |
pajs |
1.9 |
return NULL; |
218 |
|
|
} |
219 |
|
|
|
220 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->mnt_point, mp->mnt_dir) < 0) { |
221 |
pajs |
1.9 |
return NULL; |
222 |
|
|
} |
223 |
|
|
disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks; |
224 |
|
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disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail; |
225 |
|
|
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree); |
226 |
|
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|
227 |
|
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disk_ptr->total_inodes=(long long)fs.f_files; |
228 |
|
|
disk_ptr->free_inodes=(long long)fs.f_ffree; |
229 |
|
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/* Linux doesn't have a "available" inodes */ |
230 |
|
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disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
231 |
|
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#endif |
232 |
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|
233 |
|
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#ifdef SOLARIS |
234 |
pajs |
1.1 |
/* Maybe make this char[bigenough] and do strncpy's and put a null in the end? |
235 |
pajs |
1.9 |
* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob |
236 |
|
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* be upwards of a k each |
237 |
|
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*/ |
238 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->device_name, mp.mnt_special) < 0) { |
239 |
pajs |
1.1 |
return NULL; |
240 |
|
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} |
241 |
|
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|
242 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->fs_type, mp.mnt_fstype) < 0) { |
243 |
tdb |
1.65 |
return NULL; |
244 |
|
|
} |
245 |
pajs |
1.1 |
|
246 |
ats |
1.62 |
if (sg_update_string(&disk_ptr->mnt_point, mp.mnt_mountp) < 0) { |
247 |
tdb |
1.65 |
return NULL; |
248 |
|
|
} |
249 |
pajs |
1.1 |
|
250 |
|
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disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks; |
251 |
|
|
disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail; |
252 |
|
|
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree); |
253 |
|
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|
254 |
|
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disk_ptr->total_inodes=(long long)fs.f_files; |
255 |
|
|
disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree; |
256 |
|
|
disk_ptr->free_inodes=(long long)fs.f_favail; |
257 |
pajs |
1.9 |
#endif |
258 |
pajs |
1.1 |
num_disks++; |
259 |
|
|
} |
260 |
|
|
} |
261 |
|
|
|
262 |
|
|
*entries=num_disks; |
263 |
|
|
|
264 |
tdb |
1.39 |
/* If this fails, there is very little i can do about it, so |
265 |
tdb |
1.65 |
I'll ignore it :) */ |
266 |
tdb |
1.73 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
267 |
tdb |
1.39 |
endmntent(f); |
268 |
|
|
#endif |
269 |
|
|
#if defined(SOLARIS) |
270 |
pajs |
1.1 |
fclose(f); |
271 |
pajs |
1.16 |
#endif |
272 |
pajs |
1.1 |
|
273 |
|
|
return disk_stats; |
274 |
|
|
|
275 |
|
|
} |
276 |
pajs |
1.4 |
|
277 |
ats |
1.67 |
int sg_fs_compare_device_name(const void *va, const void *vb) { |
278 |
|
|
const sg_fs_stats *a = (const sg_fs_stats *)va; |
279 |
|
|
const sg_fs_stats *b = (const sg_fs_stats *)vb; |
280 |
|
|
|
281 |
|
|
return strcmp(a->device_name, b->device_name); |
282 |
|
|
} |
283 |
|
|
|
284 |
|
|
int sg_fs_compare_mnt_point(const void *va, const void *vb) { |
285 |
|
|
const sg_fs_stats *a = (const sg_fs_stats *)va; |
286 |
|
|
const sg_fs_stats *b = (const sg_fs_stats *)vb; |
287 |
|
|
|
288 |
|
|
return strcmp(a->mnt_point, b->mnt_point); |
289 |
|
|
} |
290 |
|
|
|
291 |
ats |
1.61 |
static void diskio_stat_init(sg_disk_io_stats *d) { |
292 |
ats |
1.56 |
d->disk_name = NULL; |
293 |
pajs |
1.4 |
} |
294 |
|
|
|
295 |
ats |
1.61 |
static void diskio_stat_destroy(sg_disk_io_stats *d) { |
296 |
ats |
1.56 |
free(d->disk_name); |
297 |
pajs |
1.4 |
} |
298 |
|
|
|
299 |
ats |
1.61 |
VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10, |
300 |
tdb |
1.65 |
diskio_stat_init, diskio_stat_destroy); |
301 |
pajs |
1.4 |
|
302 |
ats |
1.20 |
#ifdef LINUX |
303 |
|
|
typedef struct { |
304 |
|
|
int major; |
305 |
|
|
int minor; |
306 |
|
|
} partition; |
307 |
|
|
#endif |
308 |
|
|
|
309 |
ats |
1.61 |
sg_disk_io_stats *sg_get_disk_io_stats(int *entries){ |
310 |
ats |
1.56 |
int num_diskio; |
311 |
ats |
1.38 |
#ifndef LINUX |
312 |
ats |
1.61 |
sg_disk_io_stats *diskio_stats_ptr; |
313 |
ats |
1.38 |
#endif |
314 |
pajs |
1.4 |
|
315 |
tdb |
1.73 |
#ifdef HPUX |
316 |
|
|
long long rbytes = 0, wbytes = 0; |
317 |
|
|
struct dirent *dinfo = NULL; |
318 |
|
|
struct stat lstatinfo; |
319 |
|
|
struct pst_diskinfo pstat_diskinfo; |
320 |
|
|
char fullpathbuf[1024] = {0}; |
321 |
|
|
dev_t diskid; |
322 |
|
|
DIR *dh = NULL; |
323 |
|
|
int disknum = 0; |
324 |
|
|
#endif |
325 |
pajs |
1.10 |
#ifdef SOLARIS |
326 |
tdb |
1.65 |
kstat_ctl_t *kc; |
327 |
|
|
kstat_t *ksp; |
328 |
pajs |
1.4 |
kstat_io_t kios; |
329 |
pajs |
1.10 |
#endif |
330 |
|
|
#ifdef LINUX |
331 |
|
|
FILE *f; |
332 |
|
|
char *line_ptr; |
333 |
|
|
int major, minor; |
334 |
ats |
1.20 |
int has_pp_stats = 1; |
335 |
ats |
1.58 |
VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL); |
336 |
ats |
1.20 |
int i, n; |
337 |
|
|
time_t now; |
338 |
ats |
1.38 |
const char *format; |
339 |
pajs |
1.10 |
#endif |
340 |
tdb |
1.53 |
#if defined(FREEBSD) || defined(DFBSD) |
341 |
ats |
1.21 |
static struct statinfo stats; |
342 |
|
|
static int stats_init = 0; |
343 |
pajs |
1.17 |
int counter; |
344 |
|
|
struct device_selection *dev_sel = NULL; |
345 |
|
|
int n_selected, n_selections; |
346 |
|
|
long sel_gen; |
347 |
|
|
struct devstat *dev_ptr; |
348 |
ats |
1.31 |
#endif |
349 |
|
|
#ifdef NETBSD |
350 |
ats |
1.34 |
struct disk_sysctl *stats; |
351 |
tdb |
1.51 |
#endif |
352 |
|
|
#ifdef OPENBSD |
353 |
tdb |
1.52 |
int diskcount; |
354 |
|
|
char *disknames, *name, *bufpp; |
355 |
|
|
char **dk_name; |
356 |
tdb |
1.51 |
struct diskstats *stats; |
357 |
|
|
#endif |
358 |
|
|
#ifdef NETBSD |
359 |
|
|
#define MIBSIZE 3 |
360 |
|
|
#endif |
361 |
|
|
#ifdef OPENBSD |
362 |
|
|
#define MIBSIZE 2 |
363 |
|
|
#endif |
364 |
|
|
#if defined(NETBSD) || defined(OPENBSD) |
365 |
ats |
1.34 |
int num_disks, i; |
366 |
tdb |
1.51 |
int mib[MIBSIZE]; |
367 |
ats |
1.34 |
size_t size; |
368 |
pajs |
1.17 |
#endif |
369 |
ats |
1.34 |
|
370 |
pajs |
1.10 |
num_diskio=0; |
371 |
ats |
1.34 |
|
372 |
tdb |
1.73 |
#ifdef HPUX |
373 |
|
|
|
374 |
|
|
/* The "128" here is arbitrary, it can be increased to any number |
375 |
|
|
at the expense of only more system calls to pstat(). */ |
376 |
|
|
for (disknum = 0; disknum < 128; disknum++) { |
377 |
|
|
if (pstat_getdisk(&pstat_diskinfo, sizeof(pstat_diskinfo), 1, disknum) == -1) { |
378 |
|
|
break; |
379 |
|
|
} |
380 |
|
|
|
381 |
|
|
if (pstat_diskinfo.psd_idx != disknum) { |
382 |
|
|
continue; |
383 |
|
|
} |
384 |
|
|
|
385 |
|
|
/* Skip "disabled" disks.. */ |
386 |
|
|
if (pstat_diskinfo.psd_status == 0) { |
387 |
|
|
continue; |
388 |
|
|
} |
389 |
|
|
|
390 |
|
|
/* We can't seperate the reads from the writes, we'll |
391 |
|
|
just give half to each. */ |
392 |
|
|
rbytes = wbytes = (pstat_diskinfo.psd_dkwds * 64); |
393 |
|
|
|
394 |
|
|
/* Skip unused disks. */ |
395 |
|
|
if (rbytes == 0 && wbytes == 0) { |
396 |
|
|
continue; |
397 |
|
|
} |
398 |
|
|
|
399 |
|
|
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
400 |
|
|
return NULL; |
401 |
|
|
} |
402 |
|
|
|
403 |
|
|
diskio_stats_ptr = diskio_stats + num_diskio; |
404 |
|
|
|
405 |
|
|
diskio_stats_ptr->read_bytes = rbytes; |
406 |
|
|
diskio_stats_ptr->write_bytes = wbytes; |
407 |
|
|
|
408 |
|
|
diskio_stats_ptr->systime = time(NULL); |
409 |
|
|
|
410 |
|
|
num_diskio++; |
411 |
|
|
|
412 |
|
|
if (diskio_stats_ptr->disk_name == NULL) { |
413 |
|
|
dh = opendir("/dev/dsk"); |
414 |
|
|
if (dh == NULL) { |
415 |
|
|
continue; |
416 |
|
|
} |
417 |
|
|
|
418 |
|
|
diskid = (pstat_diskinfo.psd_dev.psd_major << 24) | pstat_diskinfo.psd_dev.psd_minor; |
419 |
|
|
while (1) { |
420 |
|
|
dinfo = readdir(dh); |
421 |
|
|
if (dinfo == NULL) { |
422 |
|
|
break; |
423 |
|
|
} |
424 |
|
|
snprintf(fullpathbuf, sizeof(fullpathbuf), "/dev/dsk/%s", dinfo->d_name); |
425 |
|
|
if (lstat(fullpathbuf, &lstatinfo) < 0) { |
426 |
|
|
continue; |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
if (lstatinfo.st_rdev == diskid) { |
430 |
|
|
if (sg_update_string(&diskio_stats_ptr->disk_name, dinfo->d_name) < 0) { |
431 |
|
|
return NULL; |
432 |
|
|
} |
433 |
|
|
break; |
434 |
|
|
} |
435 |
|
|
} |
436 |
|
|
closedir(dh); |
437 |
|
|
|
438 |
|
|
if (diskio_stats_ptr->disk_name == NULL) { |
439 |
|
|
if (sg_update_string(&diskio_stats_ptr->disk_name, pstat_diskinfo.psd_hw_path.psh_name) < 0) { |
440 |
|
|
return NULL; |
441 |
|
|
} |
442 |
|
|
} |
443 |
|
|
} |
444 |
|
|
} |
445 |
|
|
#endif |
446 |
tdb |
1.52 |
#ifdef OPENBSD |
447 |
|
|
mib[0] = CTL_HW; |
448 |
|
|
mib[1] = HW_DISKCOUNT; |
449 |
|
|
|
450 |
|
|
size = sizeof(diskcount); |
451 |
|
|
if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) { |
452 |
ats |
1.72 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT"); |
453 |
tdb |
1.52 |
return NULL; |
454 |
|
|
} |
455 |
|
|
|
456 |
|
|
mib[0] = CTL_HW; |
457 |
|
|
mib[1] = HW_DISKNAMES; |
458 |
|
|
|
459 |
|
|
if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) { |
460 |
ats |
1.72 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES"); |
461 |
tdb |
1.52 |
return NULL; |
462 |
|
|
} |
463 |
|
|
|
464 |
ats |
1.64 |
disknames = sg_malloc(size); |
465 |
tdb |
1.52 |
if (disknames == NULL) { |
466 |
|
|
return NULL; |
467 |
|
|
} |
468 |
|
|
|
469 |
|
|
if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) { |
470 |
ats |
1.72 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES"); |
471 |
tdb |
1.52 |
return NULL; |
472 |
|
|
} |
473 |
|
|
|
474 |
ats |
1.64 |
dk_name = sg_malloc(diskcount * sizeof(char *)); |
475 |
tdb |
1.52 |
bufpp = disknames; |
476 |
|
|
for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) { |
477 |
|
|
dk_name[i] = name; |
478 |
|
|
} |
479 |
|
|
#endif |
480 |
|
|
|
481 |
tdb |
1.51 |
#if defined(NETBSD) || defined(OPENBSD) |
482 |
ats |
1.34 |
mib[0] = CTL_HW; |
483 |
|
|
mib[1] = HW_DISKSTATS; |
484 |
tdb |
1.51 |
#ifdef NETBSD |
485 |
ats |
1.34 |
mib[2] = sizeof(struct disk_sysctl); |
486 |
tdb |
1.51 |
#endif |
487 |
ats |
1.34 |
|
488 |
tdb |
1.51 |
if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) { |
489 |
ats |
1.72 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS"); |
490 |
ats |
1.34 |
return NULL; |
491 |
|
|
} |
492 |
tdb |
1.51 |
|
493 |
|
|
#ifdef NETBSD |
494 |
ats |
1.34 |
num_disks = size / sizeof(struct disk_sysctl); |
495 |
tdb |
1.51 |
#else |
496 |
|
|
num_disks = size / sizeof(struct diskstats); |
497 |
|
|
#endif |
498 |
ats |
1.34 |
|
499 |
ats |
1.64 |
stats = sg_malloc(size); |
500 |
ats |
1.34 |
if (stats == NULL) { |
501 |
|
|
return NULL; |
502 |
|
|
} |
503 |
|
|
|
504 |
tdb |
1.51 |
if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) { |
505 |
ats |
1.72 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS"); |
506 |
ats |
1.34 |
return NULL; |
507 |
|
|
} |
508 |
|
|
|
509 |
|
|
for (i = 0; i < num_disks; i++) { |
510 |
ats |
1.60 |
const char *name; |
511 |
ats |
1.34 |
u_int64_t rbytes, wbytes; |
512 |
|
|
|
513 |
tdb |
1.51 |
#ifdef NETBSD |
514 |
ats |
1.34 |
#ifdef HAVE_DK_RBYTES |
515 |
|
|
rbytes = stats[i].dk_rbytes; |
516 |
|
|
wbytes = stats[i].dk_wbytes; |
517 |
|
|
#else |
518 |
tdb |
1.69 |
/* Before 2.0, NetBSD merged reads and writes. */ |
519 |
ats |
1.34 |
rbytes = wbytes = stats[i].dk_bytes; |
520 |
|
|
#endif |
521 |
tdb |
1.51 |
#else |
522 |
tdb |
1.69 |
#ifdef HAVE_DS_RBYTES |
523 |
|
|
rbytes = stats[i].ds_rbytes; |
524 |
|
|
wbytes = stats[i].ds_wbytes; |
525 |
|
|
#else |
526 |
|
|
/* Before 3.5, OpenBSD merged reads and writes */ |
527 |
tdb |
1.51 |
rbytes = wbytes = stats[i].ds_bytes; |
528 |
tdb |
1.69 |
#endif |
529 |
tdb |
1.51 |
#endif |
530 |
ats |
1.34 |
|
531 |
|
|
/* Don't keep stats for disks that have never been used. */ |
532 |
|
|
if (rbytes == 0 && wbytes == 0) { |
533 |
|
|
continue; |
534 |
|
|
} |
535 |
|
|
|
536 |
ats |
1.56 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
537 |
ats |
1.34 |
return NULL; |
538 |
|
|
} |
539 |
|
|
diskio_stats_ptr = diskio_stats + num_diskio; |
540 |
|
|
|
541 |
|
|
diskio_stats_ptr->read_bytes = rbytes; |
542 |
|
|
diskio_stats_ptr->write_bytes = wbytes; |
543 |
tdb |
1.51 |
#ifdef NETBSD |
544 |
ats |
1.60 |
name = stats[i].dk_name; |
545 |
tdb |
1.51 |
#else |
546 |
ats |
1.60 |
name = dk_name[i]; |
547 |
tdb |
1.51 |
#endif |
548 |
ats |
1.62 |
if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) { |
549 |
ats |
1.60 |
return NULL; |
550 |
|
|
} |
551 |
ats |
1.34 |
diskio_stats_ptr->systime = time(NULL); |
552 |
|
|
|
553 |
|
|
num_diskio++; |
554 |
|
|
} |
555 |
|
|
|
556 |
|
|
free(stats); |
557 |
tdb |
1.52 |
#ifdef OPENBSD |
558 |
|
|
free(dk_name); |
559 |
|
|
free(disknames); |
560 |
|
|
#endif |
561 |
ats |
1.34 |
#endif |
562 |
pajs |
1.4 |
|
563 |
tdb |
1.53 |
#if defined(FREEBSD) || defined(DFBSD) |
564 |
ats |
1.21 |
if (!stats_init) { |
565 |
ats |
1.64 |
stats.dinfo=sg_malloc(sizeof(struct devinfo)); |
566 |
ats |
1.33 |
if(stats.dinfo==NULL) return NULL; |
567 |
tdb |
1.25 |
bzero(stats.dinfo, sizeof(struct devinfo)); |
568 |
ats |
1.21 |
stats_init = 1; |
569 |
|
|
} |
570 |
pajs |
1.28 |
#ifdef FREEBSD5 |
571 |
tdb |
1.66 |
if ((devstat_getdevs(NULL, &stats)) < 0) { |
572 |
ats |
1.72 |
/* FIXME devstat functions return a string error in |
573 |
|
|
devstat_errbuf */ |
574 |
tdb |
1.66 |
sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL); |
575 |
|
|
return NULL; |
576 |
|
|
} |
577 |
ats |
1.29 |
/* Not aware of a get all devices, so i said 999. If we ever |
578 |
|
|
* find a machine with more than 999 disks, then i'll change |
579 |
|
|
* this number :) |
580 |
|
|
*/ |
581 |
tdb |
1.66 |
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) { |
582 |
|
|
sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL); |
583 |
|
|
return NULL; |
584 |
|
|
} |
585 |
pajs |
1.28 |
#else |
586 |
tdb |
1.66 |
if ((getdevs(&stats)) < 0) { |
587 |
|
|
sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL); |
588 |
|
|
return NULL; |
589 |
|
|
} |
590 |
pajs |
1.17 |
/* Not aware of a get all devices, so i said 999. If we ever |
591 |
|
|
* find a machine with more than 999 disks, then i'll change |
592 |
|
|
* this number :) |
593 |
|
|
*/ |
594 |
tdb |
1.66 |
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) { |
595 |
|
|
sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL); |
596 |
|
|
return NULL; |
597 |
|
|
} |
598 |
pajs |
1.27 |
#endif |
599 |
pajs |
1.17 |
|
600 |
|
|
for(counter=0;counter<stats.dinfo->numdevs;counter++){ |
601 |
|
|
dev_ptr=&stats.dinfo->devices[dev_sel[counter].position]; |
602 |
|
|
|
603 |
|
|
/* Throw away devices that have done nothing, ever.. Eg "odd" |
604 |
|
|
* devices.. like mem, proc.. and also doesn't report floppy |
605 |
|
|
* drives etc unless they are doing stuff :) |
606 |
|
|
*/ |
607 |
pajs |
1.27 |
#ifdef FREEBSD5 |
608 |
|
|
if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue; |
609 |
|
|
#else |
610 |
pajs |
1.17 |
if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue; |
611 |
pajs |
1.27 |
#endif |
612 |
ats |
1.56 |
|
613 |
|
|
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
614 |
pajs |
1.17 |
return NULL; |
615 |
|
|
} |
616 |
|
|
diskio_stats_ptr=diskio_stats+num_diskio; |
617 |
pajs |
1.27 |
|
618 |
|
|
#ifdef FREEBSD5 |
619 |
|
|
diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ]; |
620 |
|
|
diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE]; |
621 |
|
|
#else |
622 |
pajs |
1.17 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes_read; |
623 |
|
|
diskio_stats_ptr->write_bytes=dev_ptr->bytes_written; |
624 |
pajs |
1.27 |
#endif |
625 |
pajs |
1.17 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
626 |
ats |
1.60 |
if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) { |
627 |
ats |
1.72 |
sg_set_error_with_errno(SG_ERROR_ASPRINTF, NULL); |
628 |
ats |
1.60 |
return NULL; |
629 |
|
|
} |
630 |
pajs |
1.17 |
diskio_stats_ptr->systime=time(NULL); |
631 |
|
|
|
632 |
|
|
num_diskio++; |
633 |
|
|
} |
634 |
|
|
free(dev_sel); |
635 |
|
|
|
636 |
|
|
#endif |
637 |
pajs |
1.10 |
#ifdef SOLARIS |
638 |
pajs |
1.4 |
if ((kc = kstat_open()) == NULL) { |
639 |
tdb |
1.66 |
sg_set_error(SG_ERROR_KSTAT_OPEN, NULL); |
640 |
tdb |
1.65 |
return NULL; |
641 |
|
|
} |
642 |
pajs |
1.4 |
|
643 |
|
|
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
644 |
tdb |
1.65 |
if (!strcmp(ksp->ks_class, "disk")) { |
645 |
pajs |
1.4 |
|
646 |
|
|
if(ksp->ks_type != KSTAT_TYPE_IO) continue; |
647 |
pajs |
1.5 |
/* We dont want metadevices appearins as num_diskio */ |
648 |
pajs |
1.4 |
if(strcmp(ksp->ks_module, "md")==0) continue; |
649 |
tdb |
1.65 |
if((kstat_read(kc, ksp, &kios))==-1){ |
650 |
pajs |
1.4 |
} |
651 |
|
|
|
652 |
ats |
1.56 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
653 |
pajs |
1.4 |
kstat_close(kc); |
654 |
|
|
return NULL; |
655 |
|
|
} |
656 |
pajs |
1.5 |
diskio_stats_ptr=diskio_stats+num_diskio; |
657 |
pajs |
1.4 |
|
658 |
|
|
diskio_stats_ptr->read_bytes=kios.nread; |
659 |
|
|
diskio_stats_ptr->write_bytes=kios.nwritten; |
660 |
ats |
1.61 |
if (sg_update_string(&diskio_stats_ptr->disk_name, |
661 |
tdb |
1.65 |
sg_get_svr_from_bsd(ksp->ks_name)) < 0) { |
662 |
ats |
1.60 |
return NULL; |
663 |
|
|
} |
664 |
|
|
diskio_stats_ptr->systime=time(NULL); |
665 |
pajs |
1.4 |
|
666 |
pajs |
1.5 |
num_diskio++; |
667 |
pajs |
1.4 |
} |
668 |
|
|
} |
669 |
|
|
|
670 |
|
|
kstat_close(kc); |
671 |
pajs |
1.10 |
#endif |
672 |
pajs |
1.4 |
|
673 |
pajs |
1.10 |
#ifdef LINUX |
674 |
ats |
1.20 |
num_diskio = 0; |
675 |
|
|
n = 0; |
676 |
pajs |
1.10 |
|
677 |
ats |
1.20 |
/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels |
678 |
ats |
1.38 |
have statistics in here too, so we can use those directly. |
679 |
|
|
2.6 kernels have /proc/diskstats instead with almost (but not quite) |
680 |
|
|
the same format. */ |
681 |
|
|
|
682 |
|
|
f = fopen("/proc/diskstats", "r"); |
683 |
ats |
1.54 |
format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld"; |
684 |
ats |
1.38 |
if (f == NULL) { |
685 |
|
|
f = fopen("/proc/partitions", "r"); |
686 |
ats |
1.54 |
format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld"; |
687 |
ats |
1.38 |
} |
688 |
ats |
1.20 |
if (f == NULL) goto out; |
689 |
|
|
now = time(NULL); |
690 |
|
|
|
691 |
ats |
1.61 |
while ((line_ptr = sg_f_read_line(f, "")) != NULL) { |
692 |
ats |
1.54 |
char name[100]; |
693 |
ats |
1.20 |
char *s; |
694 |
|
|
long long rsect, wsect; |
695 |
|
|
|
696 |
ats |
1.38 |
int nr = sscanf(line_ptr, format, |
697 |
ats |
1.20 |
&major, &minor, name, &rsect, &wsect); |
698 |
|
|
if (nr < 3) continue; |
699 |
|
|
|
700 |
|
|
/* Skip device names ending in numbers, since they're |
701 |
|
|
partitions. */ |
702 |
|
|
s = name; |
703 |
|
|
while (*s != '\0') s++; |
704 |
|
|
--s; |
705 |
|
|
if (*s >= '0' && *s <= '9') continue; |
706 |
ats |
1.38 |
|
707 |
|
|
if (nr < 5) { |
708 |
|
|
has_pp_stats = 0; |
709 |
|
|
rsect = 0; |
710 |
|
|
wsect = 0; |
711 |
|
|
} |
712 |
ats |
1.20 |
|
713 |
ats |
1.56 |
if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) { |
714 |
|
|
goto out; |
715 |
|
|
} |
716 |
ats |
1.58 |
if (VECTOR_RESIZE(parts, n + 1) < 0) { |
717 |
|
|
goto out; |
718 |
pajs |
1.11 |
} |
719 |
pajs |
1.12 |
|
720 |
ats |
1.62 |
if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) { |
721 |
ats |
1.60 |
goto out; |
722 |
|
|
} |
723 |
ats |
1.20 |
diskio_stats[n].read_bytes = rsect * 512; |
724 |
|
|
diskio_stats[n].write_bytes = wsect * 512; |
725 |
|
|
diskio_stats[n].systime = now; |
726 |
|
|
parts[n].major = major; |
727 |
|
|
parts[n].minor = minor; |
728 |
pajs |
1.10 |
|
729 |
ats |
1.20 |
n++; |
730 |
|
|
} |
731 |
pajs |
1.10 |
|
732 |
ats |
1.45 |
fclose(f); |
733 |
ats |
1.46 |
f = NULL; |
734 |
pajs |
1.44 |
|
735 |
ats |
1.20 |
if (!has_pp_stats) { |
736 |
ats |
1.45 |
/* This is an older kernel where /proc/partitions doesn't |
737 |
|
|
contain stats. Read what we can from /proc/stat instead, and |
738 |
|
|
fill in the appropriate bits of the list allocated above. */ |
739 |
ats |
1.20 |
|
740 |
|
|
f = fopen("/proc/stat", "r"); |
741 |
|
|
if (f == NULL) goto out; |
742 |
|
|
now = time(NULL); |
743 |
|
|
|
744 |
ats |
1.61 |
line_ptr = sg_f_read_line(f, "disk_io:"); |
745 |
ats |
1.20 |
if (line_ptr == NULL) goto out; |
746 |
|
|
|
747 |
|
|
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
748 |
|
|
long long rsect, wsect; |
749 |
|
|
|
750 |
|
|
if (*++line_ptr == '\0') break; |
751 |
|
|
|
752 |
|
|
if((sscanf(line_ptr, |
753 |
|
|
"(%d,%d):(%*d, %*d, %lld, %*d, %lld)", |
754 |
|
|
&major, &minor, &rsect, &wsect)) != 4) { |
755 |
|
|
continue; |
756 |
|
|
} |
757 |
pajs |
1.10 |
|
758 |
ats |
1.20 |
/* Find the corresponding device from earlier. |
759 |
|
|
Just to add to the fun, "minor" is actually the disk |
760 |
|
|
number, not the device minor, so we need to figure |
761 |
|
|
out the real minor number based on the major! |
762 |
|
|
This list is not exhaustive; if you're running |
763 |
|
|
an older kernel you probably don't have fancy |
764 |
|
|
I2O hardware anyway... */ |
765 |
|
|
switch (major) { |
766 |
|
|
case 3: |
767 |
|
|
case 21: |
768 |
pajs |
1.10 |
case 22: |
769 |
ats |
1.20 |
case 33: |
770 |
|
|
case 34: |
771 |
|
|
case 36: |
772 |
|
|
case 56: |
773 |
|
|
case 57: |
774 |
|
|
case 88: |
775 |
|
|
case 89: |
776 |
|
|
case 90: |
777 |
|
|
case 91: |
778 |
|
|
minor *= 64; |
779 |
pajs |
1.11 |
break; |
780 |
ats |
1.20 |
case 9: |
781 |
|
|
case 43: |
782 |
pajs |
1.11 |
break; |
783 |
pajs |
1.10 |
default: |
784 |
ats |
1.20 |
minor *= 16; |
785 |
pajs |
1.11 |
break; |
786 |
ats |
1.20 |
} |
787 |
|
|
for (i = 0; i < n; i++) { |
788 |
|
|
if (major == parts[i].major |
789 |
|
|
&& minor == parts[i].minor) |
790 |
|
|
break; |
791 |
|
|
} |
792 |
|
|
if (i == n) continue; |
793 |
|
|
|
794 |
|
|
/* We read the number of blocks. Blocks are stored in |
795 |
|
|
512 bytes */ |
796 |
|
|
diskio_stats[i].read_bytes = rsect * 512; |
797 |
|
|
diskio_stats[i].write_bytes = wsect * 512; |
798 |
|
|
diskio_stats[i].systime = now; |
799 |
pajs |
1.10 |
} |
800 |
|
|
} |
801 |
pajs |
1.16 |
|
802 |
ats |
1.20 |
num_diskio = n; |
803 |
|
|
out: |
804 |
|
|
if (f != NULL) fclose(f); |
805 |
ats |
1.42 |
#endif |
806 |
pajs |
1.10 |
|
807 |
ats |
1.42 |
#ifdef CYGWIN |
808 |
tdb |
1.66 |
sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin"); |
809 |
ats |
1.42 |
return NULL; |
810 |
pajs |
1.10 |
#endif |
811 |
ats |
1.42 |
|
812 |
pajs |
1.5 |
*entries=num_diskio; |
813 |
pajs |
1.4 |
|
814 |
|
|
return diskio_stats; |
815 |
pajs |
1.5 |
} |
816 |
|
|
|
817 |
ats |
1.61 |
sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){ |
818 |
|
|
VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1, |
819 |
tdb |
1.65 |
diskio_stat_init, diskio_stat_destroy); |
820 |
ats |
1.61 |
sg_disk_io_stats *src = NULL, *dest; |
821 |
ats |
1.56 |
int i, j, diff_count, new_count; |
822 |
ats |
1.50 |
|
823 |
|
|
if (diskio_stats == NULL) { |
824 |
|
|
/* No previous stats, so we can't calculate a difference. */ |
825 |
ats |
1.61 |
return sg_get_disk_io_stats(entries); |
826 |
pajs |
1.5 |
} |
827 |
|
|
|
828 |
ats |
1.50 |
/* Resize the results array to match the previous stats. */ |
829 |
ats |
1.56 |
diff_count = VECTOR_SIZE(diskio_stats); |
830 |
|
|
if (VECTOR_RESIZE(diff, diff_count) < 0) { |
831 |
pajs |
1.5 |
return NULL; |
832 |
|
|
} |
833 |
|
|
|
834 |
ats |
1.50 |
/* Copy the previous stats into the result. */ |
835 |
|
|
for (i = 0; i < diff_count; i++) { |
836 |
|
|
src = &diskio_stats[i]; |
837 |
|
|
dest = &diff[i]; |
838 |
|
|
|
839 |
ats |
1.62 |
if (sg_update_string(&dest->disk_name, src->disk_name) < 0) { |
840 |
ats |
1.60 |
return NULL; |
841 |
ats |
1.50 |
} |
842 |
|
|
dest->read_bytes = src->read_bytes; |
843 |
|
|
dest->write_bytes = src->write_bytes; |
844 |
|
|
dest->systime = src->systime; |
845 |
pajs |
1.5 |
} |
846 |
|
|
|
847 |
ats |
1.50 |
/* Get a new set of stats. */ |
848 |
ats |
1.61 |
if (sg_get_disk_io_stats(&new_count) == NULL) { |
849 |
ats |
1.47 |
return NULL; |
850 |
|
|
} |
851 |
pajs |
1.5 |
|
852 |
ats |
1.50 |
/* For each previous stat... */ |
853 |
|
|
for (i = 0; i < diff_count; i++) { |
854 |
|
|
dest = &diff[i]; |
855 |
|
|
|
856 |
|
|
/* ... find the corresponding new stat ... */ |
857 |
|
|
for (j = 0; j < new_count; j++) { |
858 |
|
|
/* Try the new stat in the same position first, |
859 |
|
|
since that's most likely to be it. */ |
860 |
|
|
src = &diskio_stats[(i + j) % new_count]; |
861 |
|
|
if (strcmp(src->disk_name, dest->disk_name) == 0) { |
862 |
|
|
break; |
863 |
pajs |
1.5 |
} |
864 |
|
|
} |
865 |
ats |
1.50 |
if (j == new_count) { |
866 |
|
|
/* No match found. */ |
867 |
|
|
continue; |
868 |
|
|
} |
869 |
pajs |
1.5 |
|
870 |
ats |
1.50 |
/* ... and subtract the previous stat from it to get the |
871 |
|
|
difference. */ |
872 |
|
|
dest->read_bytes = src->read_bytes - dest->read_bytes; |
873 |
|
|
dest->write_bytes = src->write_bytes - dest->write_bytes; |
874 |
|
|
dest->systime = src->systime - dest->systime; |
875 |
|
|
} |
876 |
pajs |
1.5 |
|
877 |
ats |
1.50 |
*entries = diff_count; |
878 |
|
|
return diff; |
879 |
ats |
1.67 |
} |
880 |
|
|
|
881 |
|
|
int sg_disk_io_compare_name(const void *va, const void *vb) { |
882 |
|
|
const sg_disk_io_stats *a = (const sg_disk_io_stats *)va; |
883 |
|
|
const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb; |
884 |
|
|
|
885 |
|
|
return strcmp(a->disk_name, b->disk_name); |
886 |
pajs |
1.2 |
} |
887 |
ats |
1.50 |
|