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 (c) 1994-2001 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate * All rights reserved.
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 * Methods for the cfsd_all class.
31*0Sstevel@tonic-gate */
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate #include <stdio.h>
34*0Sstevel@tonic-gate #include <stdlib.h>
35*0Sstevel@tonic-gate #include <string.h>
36*0Sstevel@tonic-gate #include <thread.h>
37*0Sstevel@tonic-gate #include <synch.h>
38*0Sstevel@tonic-gate #include <locale.h>
39*0Sstevel@tonic-gate #include <errno.h>
40*0Sstevel@tonic-gate #include <sys/utsname.h>
41*0Sstevel@tonic-gate #include <sys/param.h>
42*0Sstevel@tonic-gate #include <sys/mnttab.h>
43*0Sstevel@tonic-gate #include <sys/vfstab.h>
44*0Sstevel@tonic-gate #include <mdbug/mdbug.h>
45*0Sstevel@tonic-gate #include <sys/fs/cachefs_fs.h>
46*0Sstevel@tonic-gate #include <sys/fs/cachefs_dlog.h>
47*0Sstevel@tonic-gate #include <sys/fs/cachefs_ioctl.h>
48*0Sstevel@tonic-gate #include "cfsd.h"
49*0Sstevel@tonic-gate #include "cfsd_kmod.h"
50*0Sstevel@tonic-gate #include "cfsd_maptbl.h"
51*0Sstevel@tonic-gate #include "cfsd_logfile.h"
52*0Sstevel@tonic-gate #include "cfsd_fscache.h"
53*0Sstevel@tonic-gate #include "cfsd_cache.h"
54*0Sstevel@tonic-gate #include "cfsd_all.h"
55*0Sstevel@tonic-gate
56*0Sstevel@tonic-gate /*
57*0Sstevel@tonic-gate * ------------------------------------------------------------
58*0Sstevel@tonic-gate * cfsd_all_create
59*0Sstevel@tonic-gate *
60*0Sstevel@tonic-gate * Description:
61*0Sstevel@tonic-gate * Arguments:
62*0Sstevel@tonic-gate * Returns:
63*0Sstevel@tonic-gate * Preconditions:
64*0Sstevel@tonic-gate */
65*0Sstevel@tonic-gate cfsd_all_object_t *
cfsd_all_create(void)66*0Sstevel@tonic-gate cfsd_all_create(void)
67*0Sstevel@tonic-gate {
68*0Sstevel@tonic-gate
69*0Sstevel@tonic-gate /* get the host name */
70*0Sstevel@tonic-gate struct utsname info;
71*0Sstevel@tonic-gate cfsd_all_object_t *all_object_p;
72*0Sstevel@tonic-gate int xx;
73*0Sstevel@tonic-gate char buffer[MAXPATHLEN];
74*0Sstevel@tonic-gate
75*0Sstevel@tonic-gate dbug_enter("cfsd_all_create");
76*0Sstevel@tonic-gate
77*0Sstevel@tonic-gate all_object_p =
78*0Sstevel@tonic-gate (cfsd_all_object_t *)cfsd_calloc(sizeof (cfsd_all_object_t));
79*0Sstevel@tonic-gate
80*0Sstevel@tonic-gate xx = uname(&info);
81*0Sstevel@tonic-gate if (xx == -1) {
82*0Sstevel@tonic-gate dbug_print(("error", "cannot get host name"));
83*0Sstevel@tonic-gate strlcpy(all_object_p->i_machname, gettext("unknown"),
84*0Sstevel@tonic-gate sizeof (all_object_p->i_machname));
85*0Sstevel@tonic-gate } else {
86*0Sstevel@tonic-gate strlcpy(all_object_p->i_machname, info.nodename,
87*0Sstevel@tonic-gate sizeof (all_object_p->i_machname));
88*0Sstevel@tonic-gate }
89*0Sstevel@tonic-gate
90*0Sstevel@tonic-gate /* initialize the locking mutex */
91*0Sstevel@tonic-gate xx = mutex_init(&all_object_p->i_lock, USYNC_THREAD, NULL);
92*0Sstevel@tonic-gate dbug_assert(xx == 0);
93*0Sstevel@tonic-gate
94*0Sstevel@tonic-gate all_object_p->i_nextcacheid = 0;
95*0Sstevel@tonic-gate all_object_p->i_modify = 1;
96*0Sstevel@tonic-gate all_object_p->i_cachelist = NULL;
97*0Sstevel@tonic-gate all_object_p->i_cachecount = 0;
98*0Sstevel@tonic-gate
99*0Sstevel@tonic-gate /* all_object_p->i_hoardp = NULL; */
100*0Sstevel@tonic-gate
101*0Sstevel@tonic-gate snprintf(buffer, sizeof (buffer), gettext("host name is \"%s\""),
102*0Sstevel@tonic-gate all_object_p->i_machname);
103*0Sstevel@tonic-gate dbug_print(("info", buffer));
104*0Sstevel@tonic-gate dbug_leave("cfsd_all_create");
105*0Sstevel@tonic-gate return (all_object_p);
106*0Sstevel@tonic-gate }
107*0Sstevel@tonic-gate
108*0Sstevel@tonic-gate /*
109*0Sstevel@tonic-gate * ------------------------------------------------------------
110*0Sstevel@tonic-gate * cfsd_all_destroy
111*0Sstevel@tonic-gate *
112*0Sstevel@tonic-gate * Description:
113*0Sstevel@tonic-gate * Arguments:
114*0Sstevel@tonic-gate * Returns:
115*0Sstevel@tonic-gate * Preconditions:
116*0Sstevel@tonic-gate */
117*0Sstevel@tonic-gate void
cfsd_all_destroy(cfsd_all_object_t * all_object_p)118*0Sstevel@tonic-gate cfsd_all_destroy(cfsd_all_object_t *all_object_p)
119*0Sstevel@tonic-gate {
120*0Sstevel@tonic-gate cfsd_cache_object_t *cache_object_p;
121*0Sstevel@tonic-gate cfsd_cache_object_t *tmp_cache_object_p;
122*0Sstevel@tonic-gate int xx;
123*0Sstevel@tonic-gate
124*0Sstevel@tonic-gate dbug_enter("cfsd_all_destroy");
125*0Sstevel@tonic-gate
126*0Sstevel@tonic-gate /* dbug_assert(all_object_p->i_hoardp == NULL); */
127*0Sstevel@tonic-gate
128*0Sstevel@tonic-gate /* get rid of any cache objects */
129*0Sstevel@tonic-gate cache_object_p = all_object_p->i_cachelist;
130*0Sstevel@tonic-gate
131*0Sstevel@tonic-gate while (cache_object_p != NULL) {
132*0Sstevel@tonic-gate tmp_cache_object_p = cache_object_p->i_next;
133*0Sstevel@tonic-gate cfsd_cache_destroy(cache_object_p);
134*0Sstevel@tonic-gate cache_object_p = tmp_cache_object_p;
135*0Sstevel@tonic-gate }
136*0Sstevel@tonic-gate
137*0Sstevel@tonic-gate /* destroy the locking mutex */
138*0Sstevel@tonic-gate xx = mutex_destroy(&all_object_p->i_lock);
139*0Sstevel@tonic-gate dbug_assert(xx == 0);
140*0Sstevel@tonic-gate cfsd_free(all_object_p);
141*0Sstevel@tonic-gate dbug_leave("cfsd_all_destroy");
142*0Sstevel@tonic-gate }
143*0Sstevel@tonic-gate
144*0Sstevel@tonic-gate /*
145*0Sstevel@tonic-gate * ------------------------------------------------------------
146*0Sstevel@tonic-gate * all_lock
147*0Sstevel@tonic-gate *
148*0Sstevel@tonic-gate * Description:
149*0Sstevel@tonic-gate * Arguments:
150*0Sstevel@tonic-gate * Returns:
151*0Sstevel@tonic-gate * Preconditions:
152*0Sstevel@tonic-gate */
153*0Sstevel@tonic-gate void
all_lock(cfsd_all_object_t * all_object_p)154*0Sstevel@tonic-gate all_lock(cfsd_all_object_t *all_object_p)
155*0Sstevel@tonic-gate {
156*0Sstevel@tonic-gate dbug_enter("all_lock");
157*0Sstevel@tonic-gate
158*0Sstevel@tonic-gate mutex_lock(&all_object_p->i_lock);
159*0Sstevel@tonic-gate dbug_leave("all_lock");
160*0Sstevel@tonic-gate }
161*0Sstevel@tonic-gate
162*0Sstevel@tonic-gate /*
163*0Sstevel@tonic-gate * ------------------------------------------------------------
164*0Sstevel@tonic-gate * all_unlock
165*0Sstevel@tonic-gate *
166*0Sstevel@tonic-gate * Description:
167*0Sstevel@tonic-gate * Arguments:
168*0Sstevel@tonic-gate * Returns:
169*0Sstevel@tonic-gate * Preconditions:
170*0Sstevel@tonic-gate */
171*0Sstevel@tonic-gate void
all_unlock(cfsd_all_object_t * all_object_p)172*0Sstevel@tonic-gate all_unlock(cfsd_all_object_t *all_object_p)
173*0Sstevel@tonic-gate {
174*0Sstevel@tonic-gate dbug_enter("all_unlock");
175*0Sstevel@tonic-gate
176*0Sstevel@tonic-gate mutex_unlock(&all_object_p->i_lock);
177*0Sstevel@tonic-gate dbug_leave("all_unlock");
178*0Sstevel@tonic-gate }
179*0Sstevel@tonic-gate
180*0Sstevel@tonic-gate /*
181*0Sstevel@tonic-gate * ------------------------------------------------------------
182*0Sstevel@tonic-gate * all_cachelist_at
183*0Sstevel@tonic-gate *
184*0Sstevel@tonic-gate * Description:
185*0Sstevel@tonic-gate * Arguments:
186*0Sstevel@tonic-gate * index
187*0Sstevel@tonic-gate * Returns:
188*0Sstevel@tonic-gate * Returns ...
189*0Sstevel@tonic-gate * Preconditions:
190*0Sstevel@tonic-gate */
191*0Sstevel@tonic-gate cfsd_cache_object_t *
all_cachelist_at(cfsd_all_object_t * all_object_p,size_t index)192*0Sstevel@tonic-gate all_cachelist_at(cfsd_all_object_t *all_object_p, size_t index)
193*0Sstevel@tonic-gate {
194*0Sstevel@tonic-gate cfsd_cache_object_t *cache_object_p;
195*0Sstevel@tonic-gate int i = 0;
196*0Sstevel@tonic-gate
197*0Sstevel@tonic-gate dbug_enter("all_cachelist_at");
198*0Sstevel@tonic-gate
199*0Sstevel@tonic-gate /* find the correct cache object */
200*0Sstevel@tonic-gate cache_object_p = all_object_p->i_cachelist;
201*0Sstevel@tonic-gate
202*0Sstevel@tonic-gate while ((cache_object_p != NULL) && (i++ < index)) {
203*0Sstevel@tonic-gate cache_object_p = cache_object_p->i_next;
204*0Sstevel@tonic-gate }
205*0Sstevel@tonic-gate
206*0Sstevel@tonic-gate dbug_leave("all_cachelist_at");
207*0Sstevel@tonic-gate return (cache_object_p);
208*0Sstevel@tonic-gate }
209*0Sstevel@tonic-gate
210*0Sstevel@tonic-gate /*
211*0Sstevel@tonic-gate * ------------------------------------------------------------
212*0Sstevel@tonic-gate * all_cachelist_add
213*0Sstevel@tonic-gate *
214*0Sstevel@tonic-gate * Description:
215*0Sstevel@tonic-gate * Arguments:
216*0Sstevel@tonic-gate * cachep
217*0Sstevel@tonic-gate * Returns:
218*0Sstevel@tonic-gate * Preconditions:
219*0Sstevel@tonic-gate * precond(cachep)
220*0Sstevel@tonic-gate */
221*0Sstevel@tonic-gate void
all_cachelist_add(cfsd_all_object_t * all_object_p,cfsd_cache_object_t * cache_object_p)222*0Sstevel@tonic-gate all_cachelist_add(cfsd_all_object_t *all_object_p,
223*0Sstevel@tonic-gate cfsd_cache_object_t *cache_object_p)
224*0Sstevel@tonic-gate {
225*0Sstevel@tonic-gate dbug_enter("all_cachelist_add");
226*0Sstevel@tonic-gate
227*0Sstevel@tonic-gate dbug_precond(cache_object_p);
228*0Sstevel@tonic-gate
229*0Sstevel@tonic-gate cache_object_p->i_next = all_object_p->i_cachelist;
230*0Sstevel@tonic-gate all_object_p->i_cachelist = cache_object_p;
231*0Sstevel@tonic-gate all_object_p->i_modify++;
232*0Sstevel@tonic-gate all_object_p->i_cachecount++;
233*0Sstevel@tonic-gate dbug_leave("all_cachelist_add");
234*0Sstevel@tonic-gate }
235*0Sstevel@tonic-gate
236*0Sstevel@tonic-gate /*
237*0Sstevel@tonic-gate * ------------------------------------------------------------
238*0Sstevel@tonic-gate * all_cachelist_find
239*0Sstevel@tonic-gate *
240*0Sstevel@tonic-gate * Description:
241*0Sstevel@tonic-gate * Arguments:
242*0Sstevel@tonic-gate * namep
243*0Sstevel@tonic-gate * Returns:
244*0Sstevel@tonic-gate * Returns ...
245*0Sstevel@tonic-gate * Preconditions:
246*0Sstevel@tonic-gate * precond(namep)
247*0Sstevel@tonic-gate */
248*0Sstevel@tonic-gate cfsd_cache_object_t *
all_cachelist_find(cfsd_all_object_t * all_object_p,const char * namep)249*0Sstevel@tonic-gate all_cachelist_find(cfsd_all_object_t *all_object_p, const char *namep)
250*0Sstevel@tonic-gate {
251*0Sstevel@tonic-gate cfsd_cache_object_t *cache_object_p;
252*0Sstevel@tonic-gate
253*0Sstevel@tonic-gate dbug_enter("all_cachelist_find");
254*0Sstevel@tonic-gate
255*0Sstevel@tonic-gate dbug_precond(namep);
256*0Sstevel@tonic-gate
257*0Sstevel@tonic-gate /* find the correct cache object */
258*0Sstevel@tonic-gate cache_object_p = all_object_p->i_cachelist;
259*0Sstevel@tonic-gate
260*0Sstevel@tonic-gate while ((cache_object_p != NULL) &&
261*0Sstevel@tonic-gate strcmp(namep, cache_object_p->i_cachedir)) {
262*0Sstevel@tonic-gate cache_object_p = cache_object_p->i_next;
263*0Sstevel@tonic-gate }
264*0Sstevel@tonic-gate
265*0Sstevel@tonic-gate dbug_leave("all_cachelist_find");
266*0Sstevel@tonic-gate return (cache_object_p);
267*0Sstevel@tonic-gate }
268*0Sstevel@tonic-gate
269*0Sstevel@tonic-gate /*
270*0Sstevel@tonic-gate * ------------------------------------------------------------
271*0Sstevel@tonic-gate * all_cachefstab_update
272*0Sstevel@tonic-gate *
273*0Sstevel@tonic-gate * Description:
274*0Sstevel@tonic-gate * Arguments:
275*0Sstevel@tonic-gate * Returns:
276*0Sstevel@tonic-gate * Preconditions:
277*0Sstevel@tonic-gate */
278*0Sstevel@tonic-gate void
all_cachefstab_update(cfsd_all_object_t * all_object_p)279*0Sstevel@tonic-gate all_cachefstab_update(cfsd_all_object_t *all_object_p)
280*0Sstevel@tonic-gate {
281*0Sstevel@tonic-gate cfsd_cache_object_t *cache_object_p;
282*0Sstevel@tonic-gate FILE *fout;
283*0Sstevel@tonic-gate
284*0Sstevel@tonic-gate dbug_enter("all_cachefstab_update");
285*0Sstevel@tonic-gate
286*0Sstevel@tonic-gate fout = fopen(CACHEFSTAB, "w");
287*0Sstevel@tonic-gate if (fout == NULL) {
288*0Sstevel@tonic-gate dbug_print(("error", "cannot write %s", CACHEFSTAB));
289*0Sstevel@tonic-gate } else {
290*0Sstevel@tonic-gate cache_object_p = all_object_p->i_cachelist;
291*0Sstevel@tonic-gate
292*0Sstevel@tonic-gate while (cache_object_p != NULL) {
293*0Sstevel@tonic-gate dbug_assert(cache_object_p);
294*0Sstevel@tonic-gate fprintf(fout, "%s\n", cache_object_p->i_cachedir);
295*0Sstevel@tonic-gate cache_object_p = cache_object_p->i_next;
296*0Sstevel@tonic-gate }
297*0Sstevel@tonic-gate if (fclose(fout))
298*0Sstevel@tonic-gate dbug_print(("error", "cannot close %s error %d",
299*0Sstevel@tonic-gate CACHEFSTAB, errno));
300*0Sstevel@tonic-gate }
301*0Sstevel@tonic-gate dbug_leave("all_cachefstab_update");
302*0Sstevel@tonic-gate }
303