1c5c4113dSnw /*
2c5c4113dSnw * CDDL HEADER START
3c5c4113dSnw *
4c5c4113dSnw * The contents of this file are subject to the terms of the
5c5c4113dSnw * Common Development and Distribution License (the "License").
6c5c4113dSnw * You may not use this file except in compliance with the License.
7c5c4113dSnw *
8c5c4113dSnw * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9c5c4113dSnw * or http://www.opensolaris.org/os/licensing.
10c5c4113dSnw * See the License for the specific language governing permissions
11c5c4113dSnw * and limitations under the License.
12c5c4113dSnw *
13c5c4113dSnw * When distributing Covered Code, include this CDDL HEADER in each
14c5c4113dSnw * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15c5c4113dSnw * If applicable, add the following below this CDDL HEADER, with the
16c5c4113dSnw * fields enclosed by brackets "[]" replaced with your own identifying
17c5c4113dSnw * information: Portions Copyright [yyyy] [name of copyright owner]
18c5c4113dSnw *
19c5c4113dSnw * CDDL HEADER END
20c5c4113dSnw */
21c5c4113dSnw
22c5c4113dSnw /*
239b214d32SJordan Brown * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24c5c4113dSnw * Use is subject to license terms.
25*32c2a899SGordon Ross *
26*32c2a899SGordon Ross * Copyright 2023 RackTop Systems, Inc.
27c5c4113dSnw */
28c5c4113dSnw
29c5c4113dSnw /*
30c5c4113dSnw * Windows to Solaris Identity Mapping kernel API
31c5c4113dSnw * This module provides the kernel cache.
32c5c4113dSnw */
33c5c4113dSnw
34c5c4113dSnw
35c5c4113dSnw #include <sys/types.h>
36c5c4113dSnw #include <sys/avl.h>
37c5c4113dSnw #include <sys/systm.h>
38c5c4113dSnw #include <sys/sysmacros.h>
39c5c4113dSnw #include <sys/ksynch.h>
40c5c4113dSnw #include <sys/kidmap.h>
419b214d32SJordan Brown #include <rpcsvc/idmap_prot.h>
42c5c4113dSnw #include "kidmap_priv.h"
43c5c4113dSnw
44c5c4113dSnw
45c5c4113dSnw /*
46c5c4113dSnw * External functions
47c5c4113dSnw */
48c5c4113dSnw extern uintptr_t space_fetch(char *key);
49c5c4113dSnw extern int space_store(char *key, uintptr_t ptr);
50c5c4113dSnw
51c5c4113dSnw
52c5c4113dSnw /*
53c5c4113dSnw * Internal definitions and functions
54c5c4113dSnw */
55c5c4113dSnw
56d15447b6Sjp #define CACHE_UID_TRIGGER_SIZE 4096
57d15447b6Sjp #define CACHE_GID_TRIGGER_SIZE 2048
58d15447b6Sjp #define CACHE_PID_TRIGGER_SIZE \
59d15447b6Sjp (CACHE_UID_TRIGGER_SIZE + CACHE_GID_TRIGGER_SIZE)
60d15447b6Sjp
61d15447b6Sjp
62d15447b6Sjp #define UNDEF_UID ((uid_t)-1)
63d15447b6Sjp #define UNDEF_GID ((gid_t)-1)
64d15447b6Sjp #define UNDEF_ISUSER (-1)
65d15447b6Sjp
66c5c4113dSnw #define CACHE_PURGE_INTERVAL (60 * 3)
670b10de9fSjp #define CACHE_TTL (60 * 10)
68c5c4113dSnw
69c5c4113dSnw
70c5c4113dSnw
7132ff2b3cSJulian Pullen #define list_insert(head, ele)\
7232ff2b3cSJulian Pullen do {\
7332ff2b3cSJulian Pullen (ele)->flink = (head)->flink;\
7432ff2b3cSJulian Pullen (head)->flink = (ele);\
7532ff2b3cSJulian Pullen (ele)->blink = (ele)->flink->blink;\
7632ff2b3cSJulian Pullen (ele)->flink->blink = (ele);\
7732ff2b3cSJulian Pullen } while (0)
78d15447b6Sjp
79d15447b6Sjp
8032ff2b3cSJulian Pullen
8132ff2b3cSJulian Pullen #define list_remove(ele)\
8232ff2b3cSJulian Pullen do {\
8332ff2b3cSJulian Pullen (ele)->flink->blink = (ele)->blink;\
8432ff2b3cSJulian Pullen (ele)->blink->flink = (ele)->flink;\
8532ff2b3cSJulian Pullen } while (0)
86d15447b6Sjp
87d15447b6Sjp
8832ff2b3cSJulian Pullen #define list_move(head, ele) \
8932ff2b3cSJulian Pullen do {\
9032ff2b3cSJulian Pullen if ((head)->flink != (ele)) {\
9132ff2b3cSJulian Pullen list_remove(ele);\
9232ff2b3cSJulian Pullen list_insert(head, ele);\
9332ff2b3cSJulian Pullen }\
9432ff2b3cSJulian Pullen } while (0)
9532ff2b3cSJulian Pullen
9632ff2b3cSJulian Pullen
9732ff2b3cSJulian Pullen typedef struct sid_prefix_node {
9832ff2b3cSJulian Pullen avl_node_t avl_link;
9932ff2b3cSJulian Pullen const char *sid_prefix;
10032ff2b3cSJulian Pullen } sid_prefix_node_t;
101d15447b6Sjp
102c5c4113dSnw
103c5c4113dSnw struct sid_prefix_store {
104c5c4113dSnw struct avl_tree tree;
105c5c4113dSnw krwlock_t lock;
106c5c4113dSnw };
107c5c4113dSnw
108c5c4113dSnw struct sid_prefix_store *kidmap_sid_prefix_store = NULL;
109c5c4113dSnw
110c5c4113dSnw
111c5c4113dSnw
112c5c4113dSnw static void
11332ff2b3cSJulian Pullen kidmap_purge_sid2pid_cache(idmap_sid2pid_cache_t *cache, size_t limit);
114d15447b6Sjp
115d15447b6Sjp static void
11632ff2b3cSJulian Pullen kidmap_purge_pid2sid_cache(idmap_pid2sid_cache_t *cache, size_t limit);
117d15447b6Sjp
118c5c4113dSnw
119c5c4113dSnw /*
120c5c4113dSnw * kidmap_strdup() copied from uts/common/fs/sockfs/nl7c.c
121c5c4113dSnw */
122c5c4113dSnw static char *
kidmap_strdup(const char * s)123c5c4113dSnw kidmap_strdup(const char *s)
124c5c4113dSnw {
125c5c4113dSnw int len = strlen(s) + 1;
126c5c4113dSnw char *ret = kmem_alloc(len, KM_SLEEP);
127c5c4113dSnw
128c5c4113dSnw bcopy(s, ret, len);
129c5c4113dSnw return (ret);
130c5c4113dSnw }
131c5c4113dSnw
132c5c4113dSnw
133c5c4113dSnw static int
kidmap_compare_sid(const void * p1,const void * p2)134*32c2a899SGordon Ross kidmap_compare_sid(const void *p1, const void *p2)
135c5c4113dSnw {
136*32c2a899SGordon Ross const sid2pid_t *entry1 = p1;
137*32c2a899SGordon Ross const sid2pid_t *entry2 = p2;
1380b10de9fSjp int64_t comp = ((int64_t)entry2->rid) - ((int64_t)entry1->rid);
139c5c4113dSnw
140c5c4113dSnw if (comp == 0)
141c5c4113dSnw comp = strcmp(entry2->sid_prefix, entry1->sid_prefix);
142c5c4113dSnw
143c5c4113dSnw if (comp < 0)
144c5c4113dSnw comp = -1;
145c5c4113dSnw else if (comp > 0)
146c5c4113dSnw comp = 1;
147c5c4113dSnw
1480b10de9fSjp return ((int)comp);
149c5c4113dSnw }
150c5c4113dSnw
151c5c4113dSnw
152c5c4113dSnw static int
kidmap_compare_pid(const void * p1,const void * p2)153*32c2a899SGordon Ross kidmap_compare_pid(const void *p1, const void *p2)
154c5c4113dSnw {
155*32c2a899SGordon Ross const pid2sid_t *entry1 = p1;
156*32c2a899SGordon Ross const pid2sid_t *entry2 = p2;
157*32c2a899SGordon Ross
1580b10de9fSjp if (entry2->pid > entry1->pid)
1590b10de9fSjp return (1);
1600b10de9fSjp if (entry2->pid < entry1->pid)
1610b10de9fSjp return (-1);
1620b10de9fSjp return (0);
163c5c4113dSnw }
164c5c4113dSnw
165c5c4113dSnw
166c5c4113dSnw static int
kidmap_compare_sid_prefix(const void * p1,const void * p2)167*32c2a899SGordon Ross kidmap_compare_sid_prefix(const void *p1, const void *p2)
168c5c4113dSnw {
169*32c2a899SGordon Ross const sid_prefix_node_t *entry1 = p1;
170*32c2a899SGordon Ross const sid_prefix_node_t *entry2 = p2;
171c5c4113dSnw int comp;
172c5c4113dSnw
173c5c4113dSnw comp = strcmp(entry2->sid_prefix, entry1->sid_prefix);
174c5c4113dSnw
175c5c4113dSnw if (comp < 0)
176c5c4113dSnw comp = -1;
177c5c4113dSnw else if (comp > 0)
178c5c4113dSnw comp = 1;
179c5c4113dSnw
180c5c4113dSnw return (comp);
181c5c4113dSnw }
182c5c4113dSnw
183c5c4113dSnw
184c5c4113dSnw void
kidmap_cache_create(idmap_cache_t * cache)185c5c4113dSnw kidmap_cache_create(idmap_cache_t *cache)
186c5c4113dSnw {
187*32c2a899SGordon Ross int i;
188*32c2a899SGordon Ross
189*32c2a899SGordon Ross /*
190*32c2a899SGordon Ross * Create SID-2-PID hash table
191*32c2a899SGordon Ross */
192*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
193*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb = &cache->sid2pid_hash[i];
194*32c2a899SGordon Ross
195*32c2a899SGordon Ross avl_create(&sid2pid_hb->tree, kidmap_compare_sid,
196*32c2a899SGordon Ross sizeof (sid2pid_t), offsetof(sid2pid_t, avl_link));
197*32c2a899SGordon Ross mutex_init(&sid2pid_hb->mutex, NULL, MUTEX_DEFAULT, NULL);
198*32c2a899SGordon Ross sid2pid_hb->purge_time = 0;
199*32c2a899SGordon Ross sid2pid_hb->head.flink = &sid2pid_hb->head;
200*32c2a899SGordon Ross sid2pid_hb->head.blink = &sid2pid_hb->head;
201*32c2a899SGordon Ross sid2pid_hb->uid_num = 0;
202*32c2a899SGordon Ross sid2pid_hb->gid_num = 0;
203*32c2a899SGordon Ross sid2pid_hb->pid_num = 0;
204*32c2a899SGordon Ross }
205*32c2a899SGordon Ross
206*32c2a899SGordon Ross /*
207*32c2a899SGordon Ross * Create UID-2-SID hash table
208*32c2a899SGordon Ross */
209*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
210*32c2a899SGordon Ross idmap_pid2sid_cache_t *uid2sid_hb = &cache->uid2sid_hash[i];
211*32c2a899SGordon Ross
212*32c2a899SGordon Ross avl_create(&uid2sid_hb->tree, kidmap_compare_pid,
213*32c2a899SGordon Ross sizeof (pid2sid_t), offsetof(pid2sid_t, avl_link));
214*32c2a899SGordon Ross mutex_init(&uid2sid_hb->mutex, NULL, MUTEX_DEFAULT, NULL);
215*32c2a899SGordon Ross uid2sid_hb->purge_time = 0;
216*32c2a899SGordon Ross uid2sid_hb->head.flink = &uid2sid_hb->head;
217*32c2a899SGordon Ross uid2sid_hb->head.blink = &uid2sid_hb->head;
218*32c2a899SGordon Ross }
219*32c2a899SGordon Ross
220*32c2a899SGordon Ross /*
221*32c2a899SGordon Ross * Create GID-2-SID hash table
222*32c2a899SGordon Ross */
223*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
224*32c2a899SGordon Ross idmap_pid2sid_cache_t *gid2sid_hb = &cache->gid2sid_hash[i];
225*32c2a899SGordon Ross
226*32c2a899SGordon Ross avl_create(&gid2sid_hb->tree, kidmap_compare_pid,
227*32c2a899SGordon Ross sizeof (pid2sid_t), offsetof(pid2sid_t, avl_link));
228*32c2a899SGordon Ross mutex_init(&gid2sid_hb->mutex, NULL, MUTEX_DEFAULT, NULL);
229*32c2a899SGordon Ross gid2sid_hb->purge_time = 0;
230*32c2a899SGordon Ross gid2sid_hb->head.flink = &gid2sid_hb->head;
231*32c2a899SGordon Ross gid2sid_hb->head.blink = &gid2sid_hb->head;
232*32c2a899SGordon Ross }
233c5c4113dSnw }
234c5c4113dSnw
235c5c4113dSnw
236c5c4113dSnw void
kidmap_cache_delete(idmap_cache_t * cache)237c5c4113dSnw kidmap_cache_delete(idmap_cache_t *cache)
238c5c4113dSnw {
239c5c4113dSnw void *cookie;
240*32c2a899SGordon Ross int i;
241c5c4113dSnw
242*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
243*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb = &cache->sid2pid_hash[i];
244*32c2a899SGordon Ross sid2pid_t *sid2pid;
245*32c2a899SGordon Ross
246*32c2a899SGordon Ross cookie = NULL;
247*32c2a899SGordon Ross while ((sid2pid = avl_destroy_nodes(&sid2pid_hb->tree,
248*32c2a899SGordon Ross &cookie)) != NULL) {
249*32c2a899SGordon Ross kmem_free(sid2pid, sizeof (sid2pid_t));
250*32c2a899SGordon Ross }
251*32c2a899SGordon Ross avl_destroy(&sid2pid_hb->tree);
252*32c2a899SGordon Ross mutex_destroy(&sid2pid_hb->mutex);
2530b10de9fSjp }
2540b10de9fSjp
255*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
256*32c2a899SGordon Ross idmap_pid2sid_cache_t *uid2sid_hb = &cache->uid2sid_hash[i];
257*32c2a899SGordon Ross pid2sid_t *uid2sid;
2580b10de9fSjp
259*32c2a899SGordon Ross cookie = NULL;
260*32c2a899SGordon Ross while ((uid2sid = avl_destroy_nodes(&uid2sid_hb->tree,
261*32c2a899SGordon Ross &cookie)) != NULL) {
262*32c2a899SGordon Ross kmem_free(uid2sid, sizeof (pid2sid_t));
263*32c2a899SGordon Ross }
264*32c2a899SGordon Ross avl_destroy(&uid2sid_hb->tree);
265*32c2a899SGordon Ross mutex_destroy(&uid2sid_hb->mutex);
2660b10de9fSjp }
2670b10de9fSjp
268*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
269*32c2a899SGordon Ross idmap_pid2sid_cache_t *gid2sid_hb = &cache->gid2sid_hash[i];
270*32c2a899SGordon Ross pid2sid_t *gid2sid;
271c5c4113dSnw
272*32c2a899SGordon Ross cookie = NULL;
273*32c2a899SGordon Ross while ((gid2sid = avl_destroy_nodes(&gid2sid_hb->tree,
274*32c2a899SGordon Ross &cookie)) != NULL) {
275*32c2a899SGordon Ross kmem_free(gid2sid, sizeof (pid2sid_t));
276*32c2a899SGordon Ross }
277*32c2a899SGordon Ross avl_destroy(&gid2sid_hb->tree);
278*32c2a899SGordon Ross mutex_destroy(&gid2sid_hb->mutex);
279c5c4113dSnw }
2800b10de9fSjp }
2810b10de9fSjp
2820b10de9fSjp
283*32c2a899SGordon Ross /*
284*32c2a899SGordon Ross * Get counts of cache entries
285*32c2a899SGordon Ross */
286f7b4b2feSjp void
kidmap_cache_get_data(idmap_cache_t * cache,size_t * uidbysid,size_t * gidbysid,size_t * pidbysid,size_t * sidbyuid,size_t * sidbygid)287f7b4b2feSjp kidmap_cache_get_data(idmap_cache_t *cache, size_t *uidbysid, size_t *gidbysid,
288f7b4b2feSjp size_t *pidbysid, size_t *sidbyuid, size_t *sidbygid)
289f7b4b2feSjp {
290*32c2a899SGordon Ross int i;
291*32c2a899SGordon Ross
292*32c2a899SGordon Ross *uidbysid = 0;
293*32c2a899SGordon Ross *gidbysid = 0;
294*32c2a899SGordon Ross *pidbysid = 0;
295*32c2a899SGordon Ross *sidbyuid = 0;
296*32c2a899SGordon Ross *sidbygid = 0;
297*32c2a899SGordon Ross
298*32c2a899SGordon Ross
299*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
300*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb = &cache->sid2pid_hash[i];
301*32c2a899SGordon Ross
302*32c2a899SGordon Ross mutex_enter(&sid2pid_hb->mutex);
303*32c2a899SGordon Ross *uidbysid += sid2pid_hb->uid_num;
304*32c2a899SGordon Ross *gidbysid += sid2pid_hb->gid_num;
305*32c2a899SGordon Ross *pidbysid += sid2pid_hb->pid_num;
306*32c2a899SGordon Ross mutex_exit(&sid2pid_hb->mutex);
307*32c2a899SGordon Ross }
308*32c2a899SGordon Ross
309*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
310*32c2a899SGordon Ross idmap_pid2sid_cache_t *uid2sid_hb = &cache->uid2sid_hash[i];
311*32c2a899SGordon Ross
312*32c2a899SGordon Ross mutex_enter(&uid2sid_hb->mutex);
313*32c2a899SGordon Ross *sidbyuid += avl_numnodes(&uid2sid_hb->tree);
314*32c2a899SGordon Ross mutex_exit(&uid2sid_hb->mutex);
315*32c2a899SGordon Ross }
316*32c2a899SGordon Ross
317*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
318*32c2a899SGordon Ross idmap_pid2sid_cache_t *gid2sid_hb = &cache->gid2sid_hash[i];
319*32c2a899SGordon Ross
320*32c2a899SGordon Ross mutex_enter(&gid2sid_hb->mutex);
321*32c2a899SGordon Ross *sidbygid += avl_numnodes(&gid2sid_hb->tree);
322*32c2a899SGordon Ross mutex_exit(&gid2sid_hb->mutex);
323*32c2a899SGordon Ross }
324f7b4b2feSjp }
325f7b4b2feSjp
326f7b4b2feSjp
3270b10de9fSjp void
kidmap_cache_purge(idmap_cache_t * cache)3280b10de9fSjp kidmap_cache_purge(idmap_cache_t *cache)
3290b10de9fSjp {
3300b10de9fSjp void *cookie;
331*32c2a899SGordon Ross int i;
332*32c2a899SGordon Ross
333*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
334*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb = &cache->sid2pid_hash[i];
335*32c2a899SGordon Ross sid2pid_t *sid2pid;
3360b10de9fSjp
337*32c2a899SGordon Ross mutex_enter(&sid2pid_hb->mutex);
338*32c2a899SGordon Ross cookie = NULL;
339*32c2a899SGordon Ross while ((sid2pid = avl_destroy_nodes(&sid2pid_hb->tree,
340*32c2a899SGordon Ross &cookie)) != NULL) {
341*32c2a899SGordon Ross kmem_free(sid2pid, sizeof (sid2pid_t));
342*32c2a899SGordon Ross }
343*32c2a899SGordon Ross avl_destroy(&sid2pid_hb->tree);
344*32c2a899SGordon Ross avl_create(&sid2pid_hb->tree, kidmap_compare_sid,
345*32c2a899SGordon Ross sizeof (sid2pid_t), offsetof(sid2pid_t, avl_link));
346*32c2a899SGordon Ross sid2pid_hb->purge_time = 0;
347*32c2a899SGordon Ross sid2pid_hb->head.flink = &sid2pid_hb->head;
348*32c2a899SGordon Ross sid2pid_hb->head.blink = &sid2pid_hb->head;
349*32c2a899SGordon Ross sid2pid_hb->uid_num = 0;
350*32c2a899SGordon Ross sid2pid_hb->gid_num = 0;
351*32c2a899SGordon Ross sid2pid_hb->pid_num = 0;
352*32c2a899SGordon Ross mutex_exit(&sid2pid_hb->mutex);
3530b10de9fSjp }
354*32c2a899SGordon Ross
355*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
356*32c2a899SGordon Ross idmap_pid2sid_cache_t *uid2sid_hb = &cache->uid2sid_hash[i];
357*32c2a899SGordon Ross pid2sid_t *uid2sid;
358*32c2a899SGordon Ross
359*32c2a899SGordon Ross mutex_enter(&uid2sid_hb->mutex);
360*32c2a899SGordon Ross cookie = NULL;
361*32c2a899SGordon Ross while ((uid2sid = avl_destroy_nodes(&uid2sid_hb->tree,
362*32c2a899SGordon Ross &cookie)) != NULL) {
363*32c2a899SGordon Ross kmem_free(uid2sid, sizeof (pid2sid_t));
364*32c2a899SGordon Ross }
365*32c2a899SGordon Ross avl_destroy(&uid2sid_hb->tree);
366*32c2a899SGordon Ross avl_create(&uid2sid_hb->tree, kidmap_compare_pid,
367*32c2a899SGordon Ross sizeof (pid2sid_t), offsetof(pid2sid_t, avl_link));
368*32c2a899SGordon Ross uid2sid_hb->purge_time = 0;
369*32c2a899SGordon Ross uid2sid_hb->head.flink = &uid2sid_hb->head;
370*32c2a899SGordon Ross uid2sid_hb->head.blink = &uid2sid_hb->head;
371*32c2a899SGordon Ross mutex_exit(&uid2sid_hb->mutex);
3720b10de9fSjp }
373*32c2a899SGordon Ross
374*32c2a899SGordon Ross for (i = 0; i < KIDMAP_HASH_SIZE; i++) {
375*32c2a899SGordon Ross idmap_pid2sid_cache_t *gid2sid_hb = &cache->gid2sid_hash[i];
376*32c2a899SGordon Ross pid2sid_t *gid2sid;
377*32c2a899SGordon Ross
378*32c2a899SGordon Ross mutex_enter(&gid2sid_hb->mutex);
379*32c2a899SGordon Ross cookie = NULL;
380*32c2a899SGordon Ross while ((gid2sid = avl_destroy_nodes(&gid2sid_hb->tree,
381*32c2a899SGordon Ross &cookie)) != NULL) {
382*32c2a899SGordon Ross kmem_free(gid2sid, sizeof (pid2sid_t));
383*32c2a899SGordon Ross }
384*32c2a899SGordon Ross avl_destroy(&gid2sid_hb->tree);
385*32c2a899SGordon Ross avl_create(&gid2sid_hb->tree, kidmap_compare_pid,
386*32c2a899SGordon Ross sizeof (pid2sid_t), offsetof(pid2sid_t, avl_link));
387*32c2a899SGordon Ross gid2sid_hb->purge_time = 0;
388*32c2a899SGordon Ross gid2sid_hb->head.flink = &gid2sid_hb->head;
389*32c2a899SGordon Ross gid2sid_hb->head.blink = &gid2sid_hb->head;
390*32c2a899SGordon Ross mutex_exit(&gid2sid_hb->mutex);
3910b10de9fSjp }
392c5c4113dSnw }
393c5c4113dSnw
394c5c4113dSnw
395c5c4113dSnw int
kidmap_cache_lookup_uidbysid(idmap_cache_t * cache,const char * sid_prefix,uint32_t rid,uid_t * uid)3960b10de9fSjp kidmap_cache_lookup_uidbysid(idmap_cache_t *cache, const char *sid_prefix,
3970b10de9fSjp uint32_t rid, uid_t *uid)
3980b10de9fSjp {
399d15447b6Sjp sid2pid_t entry;
400d15447b6Sjp sid2pid_t *result;
4010b10de9fSjp avl_index_t where;
40232ff2b3cSJulian Pullen int status = IDMAP_ERR_NOMAPPING;
403*32c2a899SGordon Ross int idx = (rid & KIDMAP_HASH_MASK);
404*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb = &cache->sid2pid_hash[idx];
4050b10de9fSjp time_t now = gethrestime_sec();
4060b10de9fSjp
4070b10de9fSjp entry.sid_prefix = sid_prefix;
4080b10de9fSjp entry.rid = rid;
4090b10de9fSjp
410*32c2a899SGordon Ross mutex_enter(&sid2pid_hb->mutex);
4110b10de9fSjp
412*32c2a899SGordon Ross result = avl_find(&sid2pid_hb->tree, &entry, &where);
41332ff2b3cSJulian Pullen if (result != NULL) {
414*32c2a899SGordon Ross list_move(&sid2pid_hb->head, result);
41532ff2b3cSJulian Pullen if (result->uid != UNDEF_UID && result->uid_ttl > now) {
41632ff2b3cSJulian Pullen *uid = result->uid;
41732ff2b3cSJulian Pullen status = IDMAP_SUCCESS;
41832ff2b3cSJulian Pullen }
41932ff2b3cSJulian Pullen }
4200b10de9fSjp
421*32c2a899SGordon Ross mutex_exit(&sid2pid_hb->mutex);
4220b10de9fSjp
4230b10de9fSjp return (status);
4240b10de9fSjp }
4250b10de9fSjp
426c5c4113dSnw
4270b10de9fSjp int
kidmap_cache_lookup_gidbysid(idmap_cache_t * cache,const char * sid_prefix,uint32_t rid,gid_t * gid)4280b10de9fSjp kidmap_cache_lookup_gidbysid(idmap_cache_t *cache, const char *sid_prefix,
4290b10de9fSjp uint32_t rid, gid_t *gid)
430c5c4113dSnw {
431d15447b6Sjp sid2pid_t entry;
432d15447b6Sjp sid2pid_t *result;
433c5c4113dSnw avl_index_t where;
43432ff2b3cSJulian Pullen int status = IDMAP_ERR_NOMAPPING;
435*32c2a899SGordon Ross int idx = (rid & KIDMAP_HASH_MASK);
436*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb = &cache->sid2pid_hash[idx];
437c5c4113dSnw time_t now = gethrestime_sec();
438c5c4113dSnw
4390b10de9fSjp entry.sid_prefix = sid_prefix;
4400b10de9fSjp entry.rid = rid;
441c5c4113dSnw
442*32c2a899SGordon Ross mutex_enter(&sid2pid_hb->mutex);
443c5c4113dSnw
444*32c2a899SGordon Ross result = avl_find(&sid2pid_hb->tree, &entry, &where);
44532ff2b3cSJulian Pullen if (result != NULL) {
446*32c2a899SGordon Ross list_move(&sid2pid_hb->head, result);
44732ff2b3cSJulian Pullen if (result->gid != UNDEF_GID && result->gid_ttl > now) {
44832ff2b3cSJulian Pullen *gid = result->gid;
44932ff2b3cSJulian Pullen status = IDMAP_SUCCESS;
45032ff2b3cSJulian Pullen }
45132ff2b3cSJulian Pullen }
452c5c4113dSnw
453*32c2a899SGordon Ross mutex_exit(&sid2pid_hb->mutex);
454c5c4113dSnw
455c5c4113dSnw return (status);
456c5c4113dSnw }
457c5c4113dSnw
458c5c4113dSnw
459c5c4113dSnw int
kidmap_cache_lookup_pidbysid(idmap_cache_t * cache,const char * sid_prefix,uint32_t rid,uid_t * pid,int * is_user)4600b10de9fSjp kidmap_cache_lookup_pidbysid(idmap_cache_t *cache, const char *sid_prefix,
461c5c4113dSnw uint32_t rid, uid_t *pid, int *is_user)
462c5c4113dSnw {
463d15447b6Sjp sid2pid_t entry;
464d15447b6Sjp sid2pid_t *result;
465c5c4113dSnw avl_index_t where;
46632ff2b3cSJulian Pullen int status = IDMAP_ERR_NOMAPPING;
467*32c2a899SGordon Ross int idx = (rid & KIDMAP_HASH_MASK);
468*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb = &cache->sid2pid_hash[idx];
469c5c4113dSnw time_t now = gethrestime_sec();
470c5c4113dSnw
471c5c4113dSnw entry.sid_prefix = sid_prefix;
472c5c4113dSnw entry.rid = rid;
473c5c4113dSnw
474*32c2a899SGordon Ross mutex_enter(&sid2pid_hb->mutex);
475d15447b6Sjp
476*32c2a899SGordon Ross result = avl_find(&sid2pid_hb->tree, &entry, &where);
47732ff2b3cSJulian Pullen if (result != NULL) {
478*32c2a899SGordon Ross list_move(&sid2pid_hb->head, result);
47932ff2b3cSJulian Pullen if (result->is_user != UNDEF_ISUSER) {
48032ff2b3cSJulian Pullen if (result->is_user && result->uid_ttl > now) {
48132ff2b3cSJulian Pullen *pid = result->uid;
48232ff2b3cSJulian Pullen *is_user = result->is_user;
48332ff2b3cSJulian Pullen status = IDMAP_SUCCESS;
48432ff2b3cSJulian Pullen } else if (!result->is_user && result->gid_ttl > now) {
48532ff2b3cSJulian Pullen *pid = result->gid;
48632ff2b3cSJulian Pullen *is_user = result->is_user;
48732ff2b3cSJulian Pullen status = IDMAP_SUCCESS;
48832ff2b3cSJulian Pullen }
48932ff2b3cSJulian Pullen }
49032ff2b3cSJulian Pullen }
491c5c4113dSnw
492*32c2a899SGordon Ross mutex_exit(&sid2pid_hb->mutex);
4930b10de9fSjp
4940b10de9fSjp return (status);
4950b10de9fSjp }
4960b10de9fSjp
4970b10de9fSjp
4980b10de9fSjp
4990b10de9fSjp int
kidmap_cache_lookup_sidbyuid(idmap_cache_t * cache,const char ** sid_prefix,uint32_t * rid,uid_t uid)5000b10de9fSjp kidmap_cache_lookup_sidbyuid(idmap_cache_t *cache, const char **sid_prefix,
5010b10de9fSjp uint32_t *rid, uid_t uid)
5020b10de9fSjp {
503d15447b6Sjp pid2sid_t entry;
504d15447b6Sjp pid2sid_t *result;
5050b10de9fSjp avl_index_t where;
50632ff2b3cSJulian Pullen int status = IDMAP_ERR_NOMAPPING;
507*32c2a899SGordon Ross int idx = (uid & KIDMAP_HASH_MASK);
508*32c2a899SGordon Ross idmap_pid2sid_cache_t *uid2sid_hb = &cache->uid2sid_hash[idx];
5090b10de9fSjp time_t now = gethrestime_sec();
5100b10de9fSjp
5110b10de9fSjp entry.pid = uid;
5120b10de9fSjp
513*32c2a899SGordon Ross mutex_enter(&uid2sid_hb->mutex);
5140b10de9fSjp
515*32c2a899SGordon Ross result = avl_find(&uid2sid_hb->tree, &entry, &where);
51632ff2b3cSJulian Pullen if (result != NULL) {
517*32c2a899SGordon Ross list_move(&uid2sid_hb->head, result);
51832ff2b3cSJulian Pullen if (result->ttl > now) {
51932ff2b3cSJulian Pullen *sid_prefix = result->sid_prefix;
52032ff2b3cSJulian Pullen *rid = result->rid;
52132ff2b3cSJulian Pullen status = IDMAP_SUCCESS;
52232ff2b3cSJulian Pullen }
52332ff2b3cSJulian Pullen }
5240b10de9fSjp
525*32c2a899SGordon Ross mutex_exit(&uid2sid_hb->mutex);
5260b10de9fSjp
5270b10de9fSjp return (status);
5280b10de9fSjp }
5290b10de9fSjp
53032ff2b3cSJulian Pullen
5310b10de9fSjp int
kidmap_cache_lookup_sidbygid(idmap_cache_t * cache,const char ** sid_prefix,uint32_t * rid,gid_t gid)5320b10de9fSjp kidmap_cache_lookup_sidbygid(idmap_cache_t *cache, const char **sid_prefix,
5330b10de9fSjp uint32_t *rid, gid_t gid)
5340b10de9fSjp {
535d15447b6Sjp pid2sid_t entry;
536d15447b6Sjp pid2sid_t *result;
5370b10de9fSjp avl_index_t where;
53832ff2b3cSJulian Pullen int status = IDMAP_ERR_NOMAPPING;
539*32c2a899SGordon Ross int idx = (gid & KIDMAP_HASH_MASK);
540*32c2a899SGordon Ross idmap_pid2sid_cache_t *gid2sid_hb = &cache->gid2sid_hash[idx];
5410b10de9fSjp time_t now = gethrestime_sec();
5420b10de9fSjp
5430b10de9fSjp entry.pid = gid;
5440b10de9fSjp
545*32c2a899SGordon Ross mutex_enter(&gid2sid_hb->mutex);
5460b10de9fSjp
547*32c2a899SGordon Ross result = avl_find(&gid2sid_hb->tree, &entry, &where);
54832ff2b3cSJulian Pullen if (result != NULL) {
549*32c2a899SGordon Ross list_move(&gid2sid_hb->head, result);
55032ff2b3cSJulian Pullen if (result->ttl > now) {
55132ff2b3cSJulian Pullen *sid_prefix = result->sid_prefix;
55232ff2b3cSJulian Pullen *rid = result->rid;
55332ff2b3cSJulian Pullen status = IDMAP_SUCCESS;
55432ff2b3cSJulian Pullen }
55532ff2b3cSJulian Pullen }
5560b10de9fSjp
557*32c2a899SGordon Ross mutex_exit(&gid2sid_hb->mutex);
558c5c4113dSnw
559c5c4113dSnw return (status);
560c5c4113dSnw }
561c5c4113dSnw
562c5c4113dSnw
563c5c4113dSnw void
kidmap_cache_add_sid2uid(idmap_cache_t * cache,const char * sid_prefix,uint32_t rid,uid_t uid,int direction)564d15447b6Sjp kidmap_cache_add_sid2uid(idmap_cache_t *cache, const char *sid_prefix,
565d15447b6Sjp uint32_t rid, uid_t uid, int direction)
5660b10de9fSjp
567c5c4113dSnw {
568c5c4113dSnw avl_index_t where;
5690b10de9fSjp time_t ttl = CACHE_TTL + gethrestime_sec();
570c5c4113dSnw
571c5c4113dSnw
572d15447b6Sjp if (direction == IDMAP_DIRECTION_BI ||
573d15447b6Sjp direction == IDMAP_DIRECTION_W2U) {
574d15447b6Sjp sid2pid_t find;
575d15447b6Sjp sid2pid_t *result;
576d15447b6Sjp sid2pid_t *new;
577*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb =
578*32c2a899SGordon Ross &cache->sid2pid_hash[rid & KIDMAP_HASH_MASK];
579c5c4113dSnw
580d15447b6Sjp find.sid_prefix = sid_prefix;
581d15447b6Sjp find.rid = rid;
582c5c4113dSnw
583*32c2a899SGordon Ross mutex_enter(&sid2pid_hb->mutex);
584c5c4113dSnw
585*32c2a899SGordon Ross result = avl_find(&sid2pid_hb->tree, &find, &where);
586d15447b6Sjp if (result) {
587d15447b6Sjp if (result->uid == UNDEF_UID)
588*32c2a899SGordon Ross sid2pid_hb->uid_num++;
589d15447b6Sjp result->uid = uid;
590d15447b6Sjp result->uid_ttl = ttl;
591d15447b6Sjp } else {
592d15447b6Sjp new = kmem_alloc(sizeof (sid2pid_t), KM_SLEEP);
593d15447b6Sjp new->sid_prefix = sid_prefix;
594d15447b6Sjp new->rid = rid;
595d15447b6Sjp new->uid = uid;
596d15447b6Sjp new->uid_ttl = ttl;
597d15447b6Sjp new->gid = UNDEF_GID;
598d15447b6Sjp new->gid_ttl = 0;
599d15447b6Sjp new->is_user = UNDEF_ISUSER; /* Unknown */
600*32c2a899SGordon Ross sid2pid_hb->uid_num++;
601d15447b6Sjp
602*32c2a899SGordon Ross list_insert(&sid2pid_hb->head, new);
603*32c2a899SGordon Ross avl_insert(&sid2pid_hb->tree, new, where);
604d15447b6Sjp }
605c5c4113dSnw
606*32c2a899SGordon Ross if ((avl_numnodes(&sid2pid_hb->tree) >
60732ff2b3cSJulian Pullen CACHE_PID_TRIGGER_SIZE) &&
608*32c2a899SGordon Ross (sid2pid_hb->purge_time + CACHE_PURGE_INTERVAL <
60932ff2b3cSJulian Pullen gethrestime_sec()))
610*32c2a899SGordon Ross kidmap_purge_sid2pid_cache(sid2pid_hb,
611d15447b6Sjp CACHE_PID_TRIGGER_SIZE);
61232ff2b3cSJulian Pullen
613*32c2a899SGordon Ross mutex_exit(&sid2pid_hb->mutex);
614d15447b6Sjp }
6150b10de9fSjp
616d15447b6Sjp if (direction == IDMAP_DIRECTION_BI ||
617d15447b6Sjp direction == IDMAP_DIRECTION_U2W) {
618d15447b6Sjp pid2sid_t find;
619d15447b6Sjp pid2sid_t *result;
620d15447b6Sjp pid2sid_t *new;
621*32c2a899SGordon Ross idmap_pid2sid_cache_t *uid2sid_hb =
622*32c2a899SGordon Ross &cache->uid2sid_hash[uid & KIDMAP_HASH_MASK];
6230b10de9fSjp
624d15447b6Sjp find.pid = uid;
6250b10de9fSjp
626*32c2a899SGordon Ross mutex_enter(&uid2sid_hb->mutex);
6270b10de9fSjp
628*32c2a899SGordon Ross result = avl_find(&uid2sid_hb->tree, &find, &where);
629d15447b6Sjp if (result) {
630d15447b6Sjp result->sid_prefix = sid_prefix;
631d15447b6Sjp result->rid = rid;
632d15447b6Sjp result->ttl = ttl;
633d15447b6Sjp } else {
634d15447b6Sjp new = kmem_alloc(sizeof (pid2sid_t), KM_SLEEP);
635d15447b6Sjp new->sid_prefix = sid_prefix;
636d15447b6Sjp new->rid = rid;
637d15447b6Sjp new->pid = uid;
638d15447b6Sjp new->ttl = ttl;
639d15447b6Sjp
640*32c2a899SGordon Ross list_insert(&uid2sid_hb->head, new);
641*32c2a899SGordon Ross avl_insert(&uid2sid_hb->tree, new, where);
642d15447b6Sjp }
643d15447b6Sjp
644*32c2a899SGordon Ross if ((avl_numnodes(&uid2sid_hb->tree) >
64532ff2b3cSJulian Pullen CACHE_UID_TRIGGER_SIZE) &&
646*32c2a899SGordon Ross (uid2sid_hb->purge_time + CACHE_PURGE_INTERVAL <
64732ff2b3cSJulian Pullen gethrestime_sec()))
648*32c2a899SGordon Ross kidmap_purge_pid2sid_cache(uid2sid_hb,
649d15447b6Sjp CACHE_UID_TRIGGER_SIZE);
65032ff2b3cSJulian Pullen
651*32c2a899SGordon Ross mutex_exit(&uid2sid_hb->mutex);
6520b10de9fSjp }
653d15447b6Sjp }
6540b10de9fSjp
6550b10de9fSjp
6560b10de9fSjp
6570b10de9fSjp void
kidmap_cache_add_sid2gid(idmap_cache_t * cache,const char * sid_prefix,uint32_t rid,gid_t gid,int direction)658d15447b6Sjp kidmap_cache_add_sid2gid(idmap_cache_t *cache, const char *sid_prefix,
659d15447b6Sjp uint32_t rid, gid_t gid, int direction)
660c5c4113dSnw {
6610b10de9fSjp avl_index_t where;
6620b10de9fSjp time_t ttl = CACHE_TTL + gethrestime_sec();
663c5c4113dSnw
664c5c4113dSnw
665d15447b6Sjp if (direction == IDMAP_DIRECTION_BI ||
666d15447b6Sjp direction == IDMAP_DIRECTION_W2U) {
667d15447b6Sjp sid2pid_t find;
668d15447b6Sjp sid2pid_t *result;
669d15447b6Sjp sid2pid_t *new;
670*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb =
671*32c2a899SGordon Ross &cache->sid2pid_hash[rid & KIDMAP_HASH_MASK];
672c5c4113dSnw
673d15447b6Sjp find.sid_prefix = sid_prefix;
674d15447b6Sjp find.rid = rid;
675d15447b6Sjp
676*32c2a899SGordon Ross mutex_enter(&sid2pid_hb->mutex);
677d15447b6Sjp
678*32c2a899SGordon Ross result = avl_find(&sid2pid_hb->tree, &find, &where);
679d15447b6Sjp if (result) {
680d15447b6Sjp if (result->gid == UNDEF_GID)
681*32c2a899SGordon Ross sid2pid_hb->gid_num++;
682d15447b6Sjp result->gid = gid;
683d15447b6Sjp result->gid_ttl = ttl;
684d15447b6Sjp } else {
685d15447b6Sjp new = kmem_alloc(sizeof (sid2pid_t), KM_SLEEP);
686d15447b6Sjp new->sid_prefix = sid_prefix;
687d15447b6Sjp new->rid = rid;
688d15447b6Sjp new->uid = UNDEF_UID;
689d15447b6Sjp new->uid_ttl = 0;
690d15447b6Sjp new->gid = gid;
691d15447b6Sjp new->gid_ttl = ttl;
692d15447b6Sjp new->is_user = UNDEF_ISUSER; /* Unknown */
693*32c2a899SGordon Ross sid2pid_hb->gid_num++;
694d15447b6Sjp
695*32c2a899SGordon Ross list_insert(&sid2pid_hb->head, new);
696*32c2a899SGordon Ross avl_insert(&sid2pid_hb->tree, new, where);
697d15447b6Sjp }
698d15447b6Sjp
699*32c2a899SGordon Ross if ((avl_numnodes(&sid2pid_hb->tree) >
70032ff2b3cSJulian Pullen CACHE_PID_TRIGGER_SIZE) &&
701*32c2a899SGordon Ross (sid2pid_hb->purge_time + CACHE_PURGE_INTERVAL <
70232ff2b3cSJulian Pullen gethrestime_sec()))
703*32c2a899SGordon Ross kidmap_purge_sid2pid_cache(sid2pid_hb,
704d15447b6Sjp CACHE_PID_TRIGGER_SIZE);
70532ff2b3cSJulian Pullen
706*32c2a899SGordon Ross mutex_exit(&sid2pid_hb->mutex);
707c5c4113dSnw }
708c5c4113dSnw
709d15447b6Sjp if (direction == IDMAP_DIRECTION_BI ||
710d15447b6Sjp direction == IDMAP_DIRECTION_U2W) {
711d15447b6Sjp pid2sid_t find;
712d15447b6Sjp pid2sid_t *result;
713d15447b6Sjp pid2sid_t *new;
714*32c2a899SGordon Ross idmap_pid2sid_cache_t *gid2sid_hb =
715*32c2a899SGordon Ross &cache->gid2sid_hash[gid & KIDMAP_HASH_MASK];
716c5c4113dSnw
717d15447b6Sjp find.pid = gid;
7180b10de9fSjp
719*32c2a899SGordon Ross mutex_enter(&gid2sid_hb->mutex);
720d15447b6Sjp
721*32c2a899SGordon Ross result = avl_find(&gid2sid_hb->tree, &find, &where);
722d15447b6Sjp if (result) {
723d15447b6Sjp result->sid_prefix = sid_prefix;
724d15447b6Sjp result->rid = rid;
725d15447b6Sjp result->ttl = ttl;
726d15447b6Sjp } else {
727d15447b6Sjp new = kmem_alloc(sizeof (pid2sid_t), KM_SLEEP);
728d15447b6Sjp new->sid_prefix = sid_prefix;
729d15447b6Sjp new->rid = rid;
730d15447b6Sjp new->pid = gid;
731d15447b6Sjp new->ttl = ttl;
732d15447b6Sjp
733*32c2a899SGordon Ross list_insert(&gid2sid_hb->head, new);
734*32c2a899SGordon Ross avl_insert(&gid2sid_hb->tree, new, where);
735d15447b6Sjp }
736d15447b6Sjp
737*32c2a899SGordon Ross if ((avl_numnodes(&gid2sid_hb->tree) >
73832ff2b3cSJulian Pullen CACHE_GID_TRIGGER_SIZE) &&
739*32c2a899SGordon Ross (gid2sid_hb->purge_time + CACHE_PURGE_INTERVAL <
74032ff2b3cSJulian Pullen gethrestime_sec()))
741*32c2a899SGordon Ross kidmap_purge_pid2sid_cache(gid2sid_hb,
742d15447b6Sjp CACHE_GID_TRIGGER_SIZE);
74332ff2b3cSJulian Pullen
744*32c2a899SGordon Ross mutex_exit(&gid2sid_hb->mutex);
745d15447b6Sjp }
746d15447b6Sjp }
7470b10de9fSjp
7480b10de9fSjp
7490b10de9fSjp void
kidmap_cache_add_sid2pid(idmap_cache_t * cache,const char * sid_prefix,uint32_t rid,uid_t pid,int is_user,int direction)750d15447b6Sjp kidmap_cache_add_sid2pid(idmap_cache_t *cache, const char *sid_prefix,
751d15447b6Sjp uint32_t rid, uid_t pid, int is_user, int direction)
7520b10de9fSjp {
7530b10de9fSjp avl_index_t where;
7540b10de9fSjp time_t ttl = CACHE_TTL + gethrestime_sec();
7550b10de9fSjp
7560b10de9fSjp
757d15447b6Sjp if (direction == IDMAP_DIRECTION_BI ||
758d15447b6Sjp direction == IDMAP_DIRECTION_W2U) {
759d15447b6Sjp sid2pid_t find;
760d15447b6Sjp sid2pid_t *result;
761d15447b6Sjp sid2pid_t *new;
762*32c2a899SGordon Ross idmap_sid2pid_cache_t *sid2pid_hb =
763*32c2a899SGordon Ross &cache->sid2pid_hash[rid & KIDMAP_HASH_MASK];
7640b10de9fSjp
765d15447b6Sjp find.sid_prefix = sid_prefix;
766d15447b6Sjp find.rid = rid;
767d15447b6Sjp
768*32c2a899SGordon Ross mutex_enter(&sid2pid_hb->mutex);
769d15447b6Sjp
770*32c2a899SGordon Ross result = avl_find(&sid2pid_hb->tree, &find, &where);
771d15447b6Sjp if (result) {
772d15447b6Sjp if (result->is_user == UNDEF_ISUSER)
773*32c2a899SGordon Ross sid2pid_hb->pid_num++;
774d15447b6Sjp result->is_user = is_user;
775d15447b6Sjp if (is_user) {
776d15447b6Sjp if (result->uid == UNDEF_UID)
777*32c2a899SGordon Ross sid2pid_hb->uid_num++;
778d15447b6Sjp result->uid = pid;
779d15447b6Sjp result->uid_ttl = ttl;
780d15447b6Sjp } else {
781d15447b6Sjp if (result->gid == UNDEF_GID)
782*32c2a899SGordon Ross sid2pid_hb->gid_num++;
783d15447b6Sjp result->gid = pid;
784d15447b6Sjp result->gid_ttl = ttl;
785d15447b6Sjp }
786d15447b6Sjp } else {
787d15447b6Sjp new = kmem_alloc(sizeof (sid2pid_t), KM_SLEEP);
788d15447b6Sjp new->sid_prefix = sid_prefix;
789d15447b6Sjp new->rid = rid;
790d15447b6Sjp new->is_user = is_user;
791d15447b6Sjp if (is_user) {
792d15447b6Sjp new->uid = pid;
793d15447b6Sjp new->uid_ttl = ttl;
794d15447b6Sjp new->gid = UNDEF_GID;
795d15447b6Sjp new->gid_ttl = 0;
796*32c2a899SGordon Ross sid2pid_hb->uid_num++;
797d15447b6Sjp } else {
798d15447b6Sjp new->uid = UNDEF_UID;
799d15447b6Sjp new->uid_ttl = 0;
800d15447b6Sjp new->gid = pid;
801d15447b6Sjp new->gid_ttl = ttl;
802*32c2a899SGordon Ross sid2pid_hb->gid_num++;
803d15447b6Sjp }
804*32c2a899SGordon Ross sid2pid_hb->pid_num++;
805d15447b6Sjp
806*32c2a899SGordon Ross list_insert(&sid2pid_hb->head, new);
807*32c2a899SGordon Ross avl_insert(&sid2pid_hb->tree, new, where);
808d15447b6Sjp }
809d15447b6Sjp
810*32c2a899SGordon Ross if ((avl_numnodes(&sid2pid_hb->tree) >
81132ff2b3cSJulian Pullen CACHE_PID_TRIGGER_SIZE) &&
812*32c2a899SGordon Ross (sid2pid_hb->purge_time + CACHE_PURGE_INTERVAL <
81332ff2b3cSJulian Pullen gethrestime_sec()))
814*32c2a899SGordon Ross kidmap_purge_sid2pid_cache(sid2pid_hb,
815d15447b6Sjp CACHE_PID_TRIGGER_SIZE);
81632ff2b3cSJulian Pullen
817*32c2a899SGordon Ross mutex_exit(&sid2pid_hb->mutex);
8180b10de9fSjp }
8190b10de9fSjp
820d15447b6Sjp if (direction == IDMAP_DIRECTION_BI ||
821d15447b6Sjp direction == IDMAP_DIRECTION_U2W) {
822d15447b6Sjp pid2sid_t find;
823d15447b6Sjp pid2sid_t *result;
824d15447b6Sjp pid2sid_t *new;
825*32c2a899SGordon Ross int idx = pid & KIDMAP_HASH_MASK;
826d15447b6Sjp
827d15447b6Sjp find.pid = pid;
828d15447b6Sjp if (is_user) {
829*32c2a899SGordon Ross idmap_pid2sid_cache_t *uid2sid_hb =
830*32c2a899SGordon Ross &cache->uid2sid_hash[idx];
831d15447b6Sjp
832*32c2a899SGordon Ross mutex_enter(&uid2sid_hb->mutex);
833*32c2a899SGordon Ross
834*32c2a899SGordon Ross result = avl_find(&uid2sid_hb->tree, &find, &where);
835d15447b6Sjp if (result) {
836d15447b6Sjp result->sid_prefix = sid_prefix;
837d15447b6Sjp result->rid = rid;
838d15447b6Sjp result->ttl = ttl;
839d15447b6Sjp } else {
840d15447b6Sjp new = kmem_alloc(sizeof (pid2sid_t), KM_SLEEP);
841d15447b6Sjp new->sid_prefix = sid_prefix;
842d15447b6Sjp new->rid = rid;
843d15447b6Sjp new->pid = pid;
844d15447b6Sjp new->ttl = ttl;
845d15447b6Sjp
846*32c2a899SGordon Ross list_insert(&uid2sid_hb->head, new);
847*32c2a899SGordon Ross avl_insert(&uid2sid_hb->tree, new, where);
848d15447b6Sjp }
849d15447b6Sjp
850*32c2a899SGordon Ross if ((avl_numnodes(&uid2sid_hb->tree) >
85132ff2b3cSJulian Pullen CACHE_UID_TRIGGER_SIZE) &&
852*32c2a899SGordon Ross (uid2sid_hb->purge_time +
85332ff2b3cSJulian Pullen CACHE_PURGE_INTERVAL <
85432ff2b3cSJulian Pullen gethrestime_sec()))
855*32c2a899SGordon Ross kidmap_purge_pid2sid_cache(uid2sid_hb,
856d15447b6Sjp CACHE_UID_TRIGGER_SIZE);
85732ff2b3cSJulian Pullen
858*32c2a899SGordon Ross mutex_exit(&uid2sid_hb->mutex);
859d15447b6Sjp } else {
860*32c2a899SGordon Ross idmap_pid2sid_cache_t *gid2sid_hb =
861*32c2a899SGordon Ross &cache->gid2sid_hash[idx];
862*32c2a899SGordon Ross
863*32c2a899SGordon Ross mutex_enter(&gid2sid_hb->mutex);
864d15447b6Sjp
865*32c2a899SGordon Ross result = avl_find(&gid2sid_hb->tree, &find, &where);
866d15447b6Sjp if (result) {
867d15447b6Sjp result->sid_prefix = sid_prefix;
868d15447b6Sjp result->rid = rid;
869d15447b6Sjp result->ttl = ttl;
870d15447b6Sjp } else {
871d15447b6Sjp new = kmem_alloc(sizeof (pid2sid_t), KM_SLEEP);
872d15447b6Sjp new->sid_prefix = sid_prefix;
873d15447b6Sjp new->rid = rid;
874d15447b6Sjp new->pid = pid;
875d15447b6Sjp new->ttl = ttl;
876d15447b6Sjp
877*32c2a899SGordon Ross list_insert(&gid2sid_hb->head, new);
878*32c2a899SGordon Ross avl_insert(&gid2sid_hb->tree, new, where);
879d15447b6Sjp }
8800b10de9fSjp
881*32c2a899SGordon Ross if ((avl_numnodes(&gid2sid_hb->tree) >
88232ff2b3cSJulian Pullen CACHE_GID_TRIGGER_SIZE) &&
883*32c2a899SGordon Ross (gid2sid_hb->purge_time +
88432ff2b3cSJulian Pullen CACHE_PURGE_INTERVAL < gethrestime_sec()))
885*32c2a899SGordon Ross kidmap_purge_pid2sid_cache(gid2sid_hb,
886d15447b6Sjp CACHE_GID_TRIGGER_SIZE);
88732ff2b3cSJulian Pullen
888*32c2a899SGordon Ross mutex_exit(&gid2sid_hb->mutex);
889d15447b6Sjp }
890d15447b6Sjp }
8910b10de9fSjp }
8920b10de9fSjp
8930b10de9fSjp
8940b10de9fSjp
8950b10de9fSjp
8960b10de9fSjp
897d15447b6Sjp static void
kidmap_purge_sid2pid_cache(idmap_sid2pid_cache_t * cache,size_t limit)89832ff2b3cSJulian Pullen kidmap_purge_sid2pid_cache(idmap_sid2pid_cache_t *cache, size_t limit)
899d15447b6Sjp {
900d15447b6Sjp time_t now = gethrestime_sec();
90132ff2b3cSJulian Pullen sid2pid_t *item;
90232ff2b3cSJulian Pullen
90332ff2b3cSJulian Pullen while (avl_numnodes(&cache->tree) > limit) {
90432ff2b3cSJulian Pullen /* Remove least recently used */
90532ff2b3cSJulian Pullen item = cache->head.blink;
90632ff2b3cSJulian Pullen list_remove(item);
90732ff2b3cSJulian Pullen avl_remove(&cache->tree, item);
90832ff2b3cSJulian Pullen if (item->uid != UNDEF_UID)
90932ff2b3cSJulian Pullen cache->uid_num--;
91032ff2b3cSJulian Pullen if (item->gid != UNDEF_GID)
91132ff2b3cSJulian Pullen cache->gid_num--;
91232ff2b3cSJulian Pullen if (item->is_user != UNDEF_ISUSER)
91332ff2b3cSJulian Pullen cache->pid_num--;
91432ff2b3cSJulian Pullen kmem_free(item, sizeof (sid2pid_t));
9150b10de9fSjp }
91632ff2b3cSJulian Pullen cache->purge_time = now;
917c5c4113dSnw }
918c5c4113dSnw
919c5c4113dSnw
920c5c4113dSnw static void
kidmap_purge_pid2sid_cache(idmap_pid2sid_cache_t * cache,size_t limit)92132ff2b3cSJulian Pullen kidmap_purge_pid2sid_cache(idmap_pid2sid_cache_t *cache, size_t limit)
922c5c4113dSnw {
923c5c4113dSnw time_t now = gethrestime_sec();
92432ff2b3cSJulian Pullen pid2sid_t *item;
92532ff2b3cSJulian Pullen
92632ff2b3cSJulian Pullen while (avl_numnodes(&cache->tree) > limit) {
92732ff2b3cSJulian Pullen /* Remove least recently used */
92832ff2b3cSJulian Pullen item = cache->head.blink;
92932ff2b3cSJulian Pullen list_remove(item);
93032ff2b3cSJulian Pullen avl_remove(&cache->tree, item);
93132ff2b3cSJulian Pullen kmem_free(item, sizeof (pid2sid_t));
932d15447b6Sjp }
93332ff2b3cSJulian Pullen cache->purge_time = now;
934c5c4113dSnw }
935c5c4113dSnw
9360b10de9fSjp
937c5c4113dSnw void
kidmap_sid_prefix_store_init(void)938c5c4113dSnw kidmap_sid_prefix_store_init(void)
939c5c4113dSnw {
940c5c4113dSnw kidmap_sid_prefix_store = (struct sid_prefix_store *)
941c5c4113dSnw space_fetch("SUNW,idmap_sid_prefix");
942c5c4113dSnw if (kidmap_sid_prefix_store == NULL) {
943c5c4113dSnw kidmap_sid_prefix_store = kmem_alloc(
944c5c4113dSnw sizeof (struct sid_prefix_store), KM_SLEEP);
945c5c4113dSnw rw_init(&kidmap_sid_prefix_store->lock, NULL, RW_DRIVER, NULL);
946c5c4113dSnw avl_create(&kidmap_sid_prefix_store->tree,
947*32c2a899SGordon Ross kidmap_compare_sid_prefix,
948c5c4113dSnw sizeof (sid_prefix_node_t),
949c5c4113dSnw offsetof(sid_prefix_node_t, avl_link));
950c5c4113dSnw (void) space_store("SUNW,idmap_sid_prefix",
951c5c4113dSnw (uintptr_t)kidmap_sid_prefix_store);
952c5c4113dSnw } else {
953c5c4113dSnw /*
954c5c4113dSnw * The AVL comparison function must be re-initialised on
955c5c4113dSnw * re-load because may not be loaded into the same
956c5c4113dSnw * address space.
957c5c4113dSnw */
958c5c4113dSnw kidmap_sid_prefix_store->tree.avl_compar =
959*32c2a899SGordon Ross kidmap_compare_sid_prefix;
960c5c4113dSnw }
961c5c4113dSnw }
962c5c4113dSnw
963c5c4113dSnw
964c5c4113dSnw const char *
kidmap_find_sid_prefix(const char * sid_prefix)965c5c4113dSnw kidmap_find_sid_prefix(const char *sid_prefix) {
966c5c4113dSnw sid_prefix_node_t find;
967c5c4113dSnw sid_prefix_node_t *result;
968c5c4113dSnw sid_prefix_node_t *new;
969c5c4113dSnw avl_index_t where;
970c5c4113dSnw
971c5c4113dSnw if (sid_prefix == NULL || *sid_prefix == '\0')
972c5c4113dSnw return (NULL);
973c5c4113dSnw
974c5c4113dSnw find.sid_prefix = sid_prefix;
975c5c4113dSnw
976c5c4113dSnw rw_enter(&kidmap_sid_prefix_store->lock, RW_READER);
977c5c4113dSnw
978c5c4113dSnw result = avl_find(&kidmap_sid_prefix_store->tree, &find, &where);
979c5c4113dSnw
980c5c4113dSnw if (result) {
981c5c4113dSnw rw_exit(&kidmap_sid_prefix_store->lock);
982c5c4113dSnw return (result->sid_prefix);
983c5c4113dSnw }
984c5c4113dSnw
985c5c4113dSnw if (rw_tryupgrade(&kidmap_sid_prefix_store->lock) == 0) {
986c5c4113dSnw /*
987c5c4113dSnw * Could not upgrade lock so release lock
988da6c28aaSamw * and acquire the write lock
989c5c4113dSnw */
990c5c4113dSnw rw_exit(&kidmap_sid_prefix_store->lock);
991c5c4113dSnw rw_enter(&kidmap_sid_prefix_store->lock, RW_WRITER);
992c5c4113dSnw
993c5c4113dSnw result = avl_find(&kidmap_sid_prefix_store->tree,
994c5c4113dSnw &find, &where);
995c5c4113dSnw if (result) {
996c5c4113dSnw rw_exit(&kidmap_sid_prefix_store->lock);
997c5c4113dSnw return (result->sid_prefix);
998c5c4113dSnw }
999c5c4113dSnw }
1000c5c4113dSnw
1001c5c4113dSnw new = kmem_alloc(sizeof (sid_prefix_node_t), KM_SLEEP);
1002c5c4113dSnw new->sid_prefix = kidmap_strdup(sid_prefix);
1003c5c4113dSnw avl_insert(&kidmap_sid_prefix_store->tree, new, where);
1004c5c4113dSnw rw_exit(&kidmap_sid_prefix_store->lock);
1005c5c4113dSnw
1006c5c4113dSnw return (new->sid_prefix);
1007c5c4113dSnw }
1008