1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate /*
30*0Sstevel@tonic-gate *
31*0Sstevel@tonic-gate * stats_stats.c
32*0Sstevel@tonic-gate *
33*0Sstevel@tonic-gate * Routines for the `clean interface' to cachefs statistics.
34*0Sstevel@tonic-gate */
35*0Sstevel@tonic-gate
36*0Sstevel@tonic-gate #include <libintl.h>
37*0Sstevel@tonic-gate #include <sys/types.h>
38*0Sstevel@tonic-gate #include <sys/stat.h>
39*0Sstevel@tonic-gate #include <assert.h>
40*0Sstevel@tonic-gate #include <sys/fs/cachefs_fs.h>
41*0Sstevel@tonic-gate #include "stats.h"
42*0Sstevel@tonic-gate
43*0Sstevel@tonic-gate static kstat_t *
stats_read_stat(stats_cookie_t * st)44*0Sstevel@tonic-gate stats_read_stat(stats_cookie_t *st)
45*0Sstevel@tonic-gate {
46*0Sstevel@tonic-gate kstat_t *stat;
47*0Sstevel@tonic-gate
48*0Sstevel@tonic-gate assert(stats_good(st));
49*0Sstevel@tonic-gate assert(st->st_flags & ST_BOUND);
50*0Sstevel@tonic-gate
51*0Sstevel@tonic-gate if (((stat = kstat_lookup(st->st_kstat_cookie,
52*0Sstevel@tonic-gate "cachefs", st->st_fsid, "stats")) == NULL) ||
53*0Sstevel@tonic-gate (kstat_read(st->st_kstat_cookie, stat, NULL) < 0)) {
54*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
55*0Sstevel@tonic-gate gettext("Cannot lookup statistics"),
56*0Sstevel@tonic-gate st->st_fsid);
57*0Sstevel@tonic-gate goto out;
58*0Sstevel@tonic-gate }
59*0Sstevel@tonic-gate out:
60*0Sstevel@tonic-gate return (stat);
61*0Sstevel@tonic-gate }
62*0Sstevel@tonic-gate
63*0Sstevel@tonic-gate u_int
stats_hits(stats_cookie_t * st)64*0Sstevel@tonic-gate stats_hits(stats_cookie_t *st)
65*0Sstevel@tonic-gate {
66*0Sstevel@tonic-gate kstat_t *ks;
67*0Sstevel@tonic-gate cachefs_stats_t *stats;
68*0Sstevel@tonic-gate u_int rc = 0;
69*0Sstevel@tonic-gate
70*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
71*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
72*0Sstevel@tonic-gate rc = stats->st_hits;
73*0Sstevel@tonic-gate } else {
74*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
75*0Sstevel@tonic-gate gettext("Cannot read statistics"));
76*0Sstevel@tonic-gate }
77*0Sstevel@tonic-gate
78*0Sstevel@tonic-gate return (rc);
79*0Sstevel@tonic-gate }
80*0Sstevel@tonic-gate
81*0Sstevel@tonic-gate u_int
stats_misses(stats_cookie_t * st)82*0Sstevel@tonic-gate stats_misses(stats_cookie_t *st)
83*0Sstevel@tonic-gate {
84*0Sstevel@tonic-gate kstat_t *ks;
85*0Sstevel@tonic-gate cachefs_stats_t *stats;
86*0Sstevel@tonic-gate u_int rc = 0;
87*0Sstevel@tonic-gate
88*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
89*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
90*0Sstevel@tonic-gate rc = stats->st_misses;
91*0Sstevel@tonic-gate } else {
92*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
93*0Sstevel@tonic-gate gettext("Cannot read statistics"));
94*0Sstevel@tonic-gate }
95*0Sstevel@tonic-gate
96*0Sstevel@tonic-gate return (rc);
97*0Sstevel@tonic-gate }
98*0Sstevel@tonic-gate
99*0Sstevel@tonic-gate u_int
stats_passes(stats_cookie_t * st)100*0Sstevel@tonic-gate stats_passes(stats_cookie_t *st)
101*0Sstevel@tonic-gate {
102*0Sstevel@tonic-gate kstat_t *ks;
103*0Sstevel@tonic-gate cachefs_stats_t *stats;
104*0Sstevel@tonic-gate u_int rc = 0;
105*0Sstevel@tonic-gate
106*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
107*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
108*0Sstevel@tonic-gate rc = stats->st_passes;
109*0Sstevel@tonic-gate } else {
110*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
111*0Sstevel@tonic-gate gettext("Cannot read statistics"));
112*0Sstevel@tonic-gate }
113*0Sstevel@tonic-gate
114*0Sstevel@tonic-gate return (rc);
115*0Sstevel@tonic-gate }
116*0Sstevel@tonic-gate
117*0Sstevel@tonic-gate u_int
stats_fails(stats_cookie_t * st)118*0Sstevel@tonic-gate stats_fails(stats_cookie_t *st)
119*0Sstevel@tonic-gate {
120*0Sstevel@tonic-gate kstat_t *ks;
121*0Sstevel@tonic-gate cachefs_stats_t *stats;
122*0Sstevel@tonic-gate u_int rc = 0;
123*0Sstevel@tonic-gate
124*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
125*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
126*0Sstevel@tonic-gate rc = stats->st_fails;
127*0Sstevel@tonic-gate } else {
128*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
129*0Sstevel@tonic-gate gettext("Cannot read statistics"));
130*0Sstevel@tonic-gate }
131*0Sstevel@tonic-gate
132*0Sstevel@tonic-gate return (rc);
133*0Sstevel@tonic-gate }
134*0Sstevel@tonic-gate
135*0Sstevel@tonic-gate u_int
stats_modifies(stats_cookie_t * st)136*0Sstevel@tonic-gate stats_modifies(stats_cookie_t *st)
137*0Sstevel@tonic-gate {
138*0Sstevel@tonic-gate kstat_t *ks;
139*0Sstevel@tonic-gate cachefs_stats_t *stats;
140*0Sstevel@tonic-gate u_int rc = 0;
141*0Sstevel@tonic-gate
142*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
143*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
144*0Sstevel@tonic-gate rc = stats->st_modifies;
145*0Sstevel@tonic-gate } else {
146*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
147*0Sstevel@tonic-gate gettext("Cannot read statistics"));
148*0Sstevel@tonic-gate }
149*0Sstevel@tonic-gate
150*0Sstevel@tonic-gate return (rc);
151*0Sstevel@tonic-gate }
152*0Sstevel@tonic-gate
153*0Sstevel@tonic-gate u_int
stats_gc_count(stats_cookie_t * st)154*0Sstevel@tonic-gate stats_gc_count(stats_cookie_t *st)
155*0Sstevel@tonic-gate {
156*0Sstevel@tonic-gate kstat_t *ks;
157*0Sstevel@tonic-gate cachefs_stats_t *stats;
158*0Sstevel@tonic-gate u_int rc = 0;
159*0Sstevel@tonic-gate
160*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
161*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
162*0Sstevel@tonic-gate rc = stats->st_gc_count;
163*0Sstevel@tonic-gate } else {
164*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
165*0Sstevel@tonic-gate gettext("Cannot read statistics"));
166*0Sstevel@tonic-gate }
167*0Sstevel@tonic-gate
168*0Sstevel@tonic-gate return (rc);
169*0Sstevel@tonic-gate }
170*0Sstevel@tonic-gate
171*0Sstevel@tonic-gate time_t
stats_gc_time(stats_cookie_t * st)172*0Sstevel@tonic-gate stats_gc_time(stats_cookie_t *st)
173*0Sstevel@tonic-gate {
174*0Sstevel@tonic-gate kstat_t *ks;
175*0Sstevel@tonic-gate cachefs_stats_t *stats;
176*0Sstevel@tonic-gate time_t rc = 0;
177*0Sstevel@tonic-gate
178*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
179*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
180*0Sstevel@tonic-gate rc = stats->st_gc_time;
181*0Sstevel@tonic-gate } else {
182*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
183*0Sstevel@tonic-gate gettext("Cannot read statistics"));
184*0Sstevel@tonic-gate }
185*0Sstevel@tonic-gate
186*0Sstevel@tonic-gate return (rc);
187*0Sstevel@tonic-gate }
188*0Sstevel@tonic-gate
189*0Sstevel@tonic-gate time_t
stats_gc_before(stats_cookie_t * st)190*0Sstevel@tonic-gate stats_gc_before(stats_cookie_t *st)
191*0Sstevel@tonic-gate {
192*0Sstevel@tonic-gate kstat_t *ks;
193*0Sstevel@tonic-gate cachefs_stats_t *stats;
194*0Sstevel@tonic-gate time_t rc = 0;
195*0Sstevel@tonic-gate
196*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
197*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
198*0Sstevel@tonic-gate rc = stats->st_gc_before_atime;
199*0Sstevel@tonic-gate } else {
200*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
201*0Sstevel@tonic-gate gettext("Cannot read statistics"));
202*0Sstevel@tonic-gate }
203*0Sstevel@tonic-gate
204*0Sstevel@tonic-gate return (rc);
205*0Sstevel@tonic-gate }
206*0Sstevel@tonic-gate
207*0Sstevel@tonic-gate time_t
stats_gc_after(stats_cookie_t * st)208*0Sstevel@tonic-gate stats_gc_after(stats_cookie_t *st)
209*0Sstevel@tonic-gate {
210*0Sstevel@tonic-gate kstat_t *ks;
211*0Sstevel@tonic-gate cachefs_stats_t *stats;
212*0Sstevel@tonic-gate time_t rc = 0;
213*0Sstevel@tonic-gate
214*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) != NULL) {
215*0Sstevel@tonic-gate stats = (cachefs_stats_t *) ks->ks_data;
216*0Sstevel@tonic-gate rc = stats->st_gc_after_atime;
217*0Sstevel@tonic-gate } else {
218*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
219*0Sstevel@tonic-gate gettext("Cannot read statistics"));
220*0Sstevel@tonic-gate }
221*0Sstevel@tonic-gate
222*0Sstevel@tonic-gate return (rc);
223*0Sstevel@tonic-gate }
224*0Sstevel@tonic-gate
225*0Sstevel@tonic-gate int
stats_zero_stats(stats_cookie_t * st)226*0Sstevel@tonic-gate stats_zero_stats(stats_cookie_t *st)
227*0Sstevel@tonic-gate {
228*0Sstevel@tonic-gate cachefs_stats_t stats;
229*0Sstevel@tonic-gate kstat_t *ks;
230*0Sstevel@tonic-gate int rc = 0;
231*0Sstevel@tonic-gate void *memset();
232*0Sstevel@tonic-gate
233*0Sstevel@tonic-gate assert(stats_good(st));
234*0Sstevel@tonic-gate assert(st->st_flags & ST_BOUND);
235*0Sstevel@tonic-gate
236*0Sstevel@tonic-gate if ((ks = stats_read_stat(st)) == NULL) {
237*0Sstevel@tonic-gate rc = -1;
238*0Sstevel@tonic-gate goto out;
239*0Sstevel@tonic-gate }
240*0Sstevel@tonic-gate
241*0Sstevel@tonic-gate memset(&stats, '\0', sizeof (stats));
242*0Sstevel@tonic-gate ks->ks_data = &stats;
243*0Sstevel@tonic-gate
244*0Sstevel@tonic-gate if (kstat_write(st->st_kstat_cookie, ks, NULL) < 0) {
245*0Sstevel@tonic-gate stats_perror(st, SE_KERNEL,
246*0Sstevel@tonic-gate gettext("Cannot zero statistics"));
247*0Sstevel@tonic-gate rc = -1;
248*0Sstevel@tonic-gate goto out;
249*0Sstevel@tonic-gate }
250*0Sstevel@tonic-gate
251*0Sstevel@tonic-gate out:
252*0Sstevel@tonic-gate return (rc);
253*0Sstevel@tonic-gate }
254