blob: ce34c8e5b8eb68efbddbbd6c3622734f2b1655f2 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <linux/types.h>
2#include <linux/sched.h>
3#include <linux/module.h>
4#include <linux/sunrpc/types.h>
5#include <linux/sunrpc/xdr.h>
6#include <linux/sunrpc/svcsock.h>
7#include <linux/sunrpc/svcauth.h>
Andy Adamsonc4170582007-07-17 04:04:42 -07008#include <linux/sunrpc/gss_api.h>
Jeff Layton59766872013-02-04 12:50:00 -05009#include <linux/sunrpc/addr.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <linux/err.h>
11#include <linux/seq_file.h>
12#include <linux/hash.h>
Paulo Marques543537b2005-06-23 00:09:02 -070013#include <linux/string.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090014#include <linux/slab.h>
Greg Banks7b2b1fe2006-10-04 02:15:50 -070015#include <net/sock.h>
Aurélien Charbonf15364b2008-01-18 15:50:56 +010016#include <net/ipv6.h>
17#include <linux/kernel.h>
Eric W. Biedermanae2975b2011-11-14 15:56:38 -080018#include <linux/user_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#define RPCDBG_FACILITY RPCDBG_AUTH
20
21
Pavel Emelyanov90d51b02010-09-27 14:02:29 +040022#include "netns.h"
23
Linus Torvalds1da177e2005-04-16 15:20:36 -070024/*
25 * AUTHUNIX and AUTHNULL credentials are both handled here.
26 * AUTHNULL is treated just like AUTHUNIX except that the uid/gid
27 * are always nobody (-2). i.e. we do the same IP address checks for
28 * AUTHNULL as for AUTHUNIX, and that is done here.
29 */
30
31
Linus Torvalds1da177e2005-04-16 15:20:36 -070032struct unix_domain {
33 struct auth_domain h;
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 /* other stuff later */
35};
36
H Hartley Sweeten13e0e952011-06-20 18:19:12 -070037extern struct auth_ops svcauth_null;
NeilBrownefc36aa2006-03-27 01:14:59 -080038extern struct auth_ops svcauth_unix;
39
J. Bruce Fields8b3e07a2011-03-07 22:50:47 -050040static void svcauth_unix_domain_release(struct auth_domain *dom)
41{
42 struct unix_domain *ud = container_of(dom, struct unix_domain, h);
43
44 kfree(dom->name);
45 kfree(ud);
46}
47
Linus Torvalds1da177e2005-04-16 15:20:36 -070048struct auth_domain *unix_domain_find(char *name)
49{
NeilBrownefc36aa2006-03-27 01:14:59 -080050 struct auth_domain *rv;
51 struct unix_domain *new = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
NeilBrownefc36aa2006-03-27 01:14:59 -080053 rv = auth_domain_lookup(name, NULL);
54 while(1) {
NeilBrownad1b5222006-03-27 01:15:11 -080055 if (rv) {
56 if (new && rv != &new->h)
J. Bruce Fields352b5d12011-03-09 22:40:30 -050057 svcauth_unix_domain_release(&new->h);
NeilBrownad1b5222006-03-27 01:15:11 -080058
59 if (rv->flavour != &svcauth_unix) {
60 auth_domain_put(rv);
61 return NULL;
62 }
NeilBrownefc36aa2006-03-27 01:14:59 -080063 return rv;
64 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
NeilBrownefc36aa2006-03-27 01:14:59 -080066 new = kmalloc(sizeof(*new), GFP_KERNEL);
67 if (new == NULL)
68 return NULL;
69 kref_init(&new->h.ref);
70 new->h.name = kstrdup(name, GFP_KERNEL);
NeilBrowndd08d6e2006-12-13 00:35:44 -080071 if (new->h.name == NULL) {
72 kfree(new);
73 return NULL;
74 }
NeilBrownefc36aa2006-03-27 01:14:59 -080075 new->h.flavour = &svcauth_unix;
NeilBrownefc36aa2006-03-27 01:14:59 -080076 rv = auth_domain_lookup(name, &new->h);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070078}
Trond Myklebust24c37672008-12-23 16:30:12 -050079EXPORT_SYMBOL_GPL(unix_domain_find);
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82/**************************************************
83 * cache for IP address to unix_domain
84 * as needed by AUTH_UNIX
85 */
86#define IP_HASHBITS 8
87#define IP_HASHMAX (1<<IP_HASHBITS)
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
89struct ip_map {
90 struct cache_head h;
91 char m_class[8]; /* e.g. "nfsd" */
Aurélien Charbonf15364b2008-01-18 15:50:56 +010092 struct in6_addr m_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 struct unix_domain *m_client;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094};
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
NeilBrownbaab9352006-03-27 01:15:09 -080096static void ip_map_put(struct kref *kref)
Linus Torvalds1da177e2005-04-16 15:20:36 -070097{
NeilBrownbaab9352006-03-27 01:15:09 -080098 struct cache_head *item = container_of(kref, struct cache_head, ref);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 struct ip_map *im = container_of(item, struct ip_map,h);
NeilBrownbaab9352006-03-27 01:15:09 -0800100
101 if (test_bit(CACHE_VALID, &item->flags) &&
102 !test_bit(CACHE_NEGATIVE, &item->flags))
103 auth_domain_put(&im->m_client->h);
104 kfree(im);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105}
106
Eric Dumazetddbe5032012-07-18 08:11:12 +0000107static inline int hash_ip6(const struct in6_addr *ip)
NeilBrown1f1e0302006-01-06 00:09:49 -0800108{
Eric Dumazetddbe5032012-07-18 08:11:12 +0000109 return hash_32(ipv6_addr_hash(ip), IP_HASHBITS);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100110}
NeilBrown1a9917c2006-03-27 01:15:02 -0800111static int ip_map_match(struct cache_head *corig, struct cache_head *cnew)
112{
113 struct ip_map *orig = container_of(corig, struct ip_map, h);
114 struct ip_map *new = container_of(cnew, struct ip_map, h);
Joe Perchesf64f9e72009-11-29 16:55:45 -0800115 return strcmp(orig->m_class, new->m_class) == 0 &&
116 ipv6_addr_equal(&orig->m_addr, &new->m_addr);
NeilBrown1a9917c2006-03-27 01:15:02 -0800117}
118static void ip_map_init(struct cache_head *cnew, struct cache_head *citem)
119{
120 struct ip_map *new = container_of(cnew, struct ip_map, h);
121 struct ip_map *item = container_of(citem, struct ip_map, h);
NeilBrown1f1e0302006-01-06 00:09:49 -0800122
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123 strcpy(new->m_class, item->m_class);
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +0000124 new->m_addr = item->m_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125}
NeilBrown1a9917c2006-03-27 01:15:02 -0800126static void update(struct cache_head *cnew, struct cache_head *citem)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127{
NeilBrown1a9917c2006-03-27 01:15:02 -0800128 struct ip_map *new = container_of(cnew, struct ip_map, h);
129 struct ip_map *item = container_of(citem, struct ip_map, h);
130
NeilBrownefc36aa2006-03-27 01:14:59 -0800131 kref_get(&item->m_client->h.ref);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 new->m_client = item->m_client;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133}
NeilBrown1a9917c2006-03-27 01:15:02 -0800134static struct cache_head *ip_map_alloc(void)
135{
136 struct ip_map *i = kmalloc(sizeof(*i), GFP_KERNEL);
137 if (i)
138 return &i->h;
139 else
140 return NULL;
141}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142
143static void ip_map_request(struct cache_detail *cd,
144 struct cache_head *h,
145 char **bpp, int *blen)
146{
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100147 char text_addr[40];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 struct ip_map *im = container_of(h, struct ip_map, h);
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800149
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100150 if (ipv6_addr_v4mapped(&(im->m_addr))) {
Harvey Harrison21454aa2008-10-31 00:54:56 -0700151 snprintf(text_addr, 20, "%pI4", &im->m_addr.s6_addr32[3]);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100152 } else {
Harvey Harrison5b095d9892008-10-29 12:52:50 -0700153 snprintf(text_addr, 40, "%pI6", &im->m_addr);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100154 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 qword_add(bpp, blen, im->m_class);
156 qword_add(bpp, blen, text_addr);
157 (*bpp)[-1] = '\n';
158}
159
Trond Myklebustbc74b4f2009-08-09 15:14:29 -0400160static int ip_map_upcall(struct cache_detail *cd, struct cache_head *h)
161{
162 return sunrpc_cache_pipe_upcall(cd, h, ip_map_request);
163}
164
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400165static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, struct in6_addr *addr);
166static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167
168static int ip_map_parse(struct cache_detail *cd,
169 char *mesg, int mlen)
170{
171 /* class ipaddress [domainname] */
172 /* should be safe just to use the start of the input buffer
173 * for scratch: */
174 char *buf = mesg;
175 int len;
NeilBrown1a9917c2006-03-27 01:15:02 -0800176 char class[8];
Chuck Lever07396052010-01-26 14:03:47 -0500177 union {
178 struct sockaddr sa;
179 struct sockaddr_in s4;
180 struct sockaddr_in6 s6;
181 } address;
182 struct sockaddr_in6 sin6;
NeilBrown1a9917c2006-03-27 01:15:02 -0800183 int err;
184
185 struct ip_map *ipmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 struct auth_domain *dom;
187 time_t expiry;
188
189 if (mesg[mlen-1] != '\n')
190 return -EINVAL;
191 mesg[mlen-1] = 0;
192
193 /* class */
NeilBrown1a9917c2006-03-27 01:15:02 -0800194 len = qword_get(&mesg, class, sizeof(class));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 if (len <= 0) return -EINVAL;
196
197 /* ip address */
198 len = qword_get(&mesg, buf, mlen);
199 if (len <= 0) return -EINVAL;
200
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400201 if (rpc_pton(cd->net, buf, len, &address.sa, sizeof(address)) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 return -EINVAL;
Chuck Lever07396052010-01-26 14:03:47 -0500203 switch (address.sa.sa_family) {
204 case AF_INET:
205 /* Form a mapped IPv4 address in sin6 */
Chuck Lever07396052010-01-26 14:03:47 -0500206 sin6.sin6_family = AF_INET6;
Pavel Emelyanov70dc78d2010-10-05 20:48:02 +0400207 ipv6_addr_set_v4mapped(address.s4.sin_addr.s_addr,
208 &sin6.sin6_addr);
Chuck Lever07396052010-01-26 14:03:47 -0500209 break;
Eric Dumazetdfd56b82011-12-10 09:48:31 +0000210#if IS_ENABLED(CONFIG_IPV6)
Chuck Lever07396052010-01-26 14:03:47 -0500211 case AF_INET6:
212 memcpy(&sin6, &address.s6, sizeof(sin6));
213 break;
214#endif
215 default:
216 return -EINVAL;
217 }
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800218
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 expiry = get_expiry(&mesg);
220 if (expiry ==0)
221 return -EINVAL;
222
223 /* domainname, or empty for NEGATIVE */
224 len = qword_get(&mesg, buf, mlen);
225 if (len < 0) return -EINVAL;
226
227 if (len) {
228 dom = unix_domain_find(buf);
229 if (dom == NULL)
230 return -ENOENT;
231 } else
232 dom = NULL;
233
Chuck Lever07396052010-01-26 14:03:47 -0500234 /* IPv6 scope IDs are ignored for now */
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400235 ipmp = __ip_map_lookup(cd, class, &sin6.sin6_addr);
NeilBrown1a9917c2006-03-27 01:15:02 -0800236 if (ipmp) {
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400237 err = __ip_map_update(cd, ipmp,
NeilBrown1a9917c2006-03-27 01:15:02 -0800238 container_of(dom, struct unix_domain, h),
239 expiry);
240 } else
241 err = -ENOMEM;
242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 if (dom)
244 auth_domain_put(dom);
NeilBrown1a9917c2006-03-27 01:15:02 -0800245
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 cache_flush();
NeilBrown1a9917c2006-03-27 01:15:02 -0800247 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248}
249
250static int ip_map_show(struct seq_file *m,
251 struct cache_detail *cd,
252 struct cache_head *h)
253{
254 struct ip_map *im;
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100255 struct in6_addr addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 char *dom = "-no-domain-";
257
258 if (h == NULL) {
259 seq_puts(m, "#class IP domain\n");
260 return 0;
261 }
262 im = container_of(h, struct ip_map, h);
263 /* class addr domain */
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +0000264 addr = im->m_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800266 if (test_bit(CACHE_VALID, &h->flags) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 !test_bit(CACHE_NEGATIVE, &h->flags))
268 dom = im->m_client->h.name;
269
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100270 if (ipv6_addr_v4mapped(&addr)) {
Harvey Harrison21454aa2008-10-31 00:54:56 -0700271 seq_printf(m, "%s %pI4 %s\n",
272 im->m_class, &addr.s6_addr32[3], dom);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100273 } else {
Harvey Harrison5b095d9892008-10-29 12:52:50 -0700274 seq_printf(m, "%s %pI6 %s\n", im->m_class, &addr, dom);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100275 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 return 0;
277}
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800278
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400280static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class,
281 struct in6_addr *addr)
NeilBrown1a9917c2006-03-27 01:15:02 -0800282{
283 struct ip_map ip;
284 struct cache_head *ch;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
NeilBrown1a9917c2006-03-27 01:15:02 -0800286 strcpy(ip.m_class, class);
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +0000287 ip.m_addr = *addr;
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400288 ch = sunrpc_cache_lookup(cd, &ip.h,
NeilBrown1a9917c2006-03-27 01:15:02 -0800289 hash_str(class, IP_HASHBITS) ^
Eric Dumazetddbe5032012-07-18 08:11:12 +0000290 hash_ip6(addr));
NeilBrown1a9917c2006-03-27 01:15:02 -0800291
292 if (ch)
293 return container_of(ch, struct ip_map, h);
294 else
295 return NULL;
296}
297
Pavel Emelyanov352114f2010-09-27 13:59:48 +0400298static inline struct ip_map *ip_map_lookup(struct net *net, char *class,
299 struct in6_addr *addr)
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400300{
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400301 struct sunrpc_net *sn;
302
303 sn = net_generic(net, sunrpc_net_id);
304 return __ip_map_lookup(sn->ip_map_cache, class, addr);
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400305}
306
307static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm,
308 struct unix_domain *udom, time_t expiry)
NeilBrown1a9917c2006-03-27 01:15:02 -0800309{
310 struct ip_map ip;
311 struct cache_head *ch;
312
313 ip.m_client = udom;
314 ip.h.flags = 0;
315 if (!udom)
316 set_bit(CACHE_NEGATIVE, &ip.h.flags);
NeilBrown1a9917c2006-03-27 01:15:02 -0800317 ip.h.expiry_time = expiry;
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400318 ch = sunrpc_cache_update(cd, &ip.h, &ipm->h,
NeilBrown1a9917c2006-03-27 01:15:02 -0800319 hash_str(ipm->m_class, IP_HASHBITS) ^
Eric Dumazetddbe5032012-07-18 08:11:12 +0000320 hash_ip6(&ipm->m_addr));
NeilBrown1a9917c2006-03-27 01:15:02 -0800321 if (!ch)
322 return -ENOMEM;
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400323 cache_put(ch, cd);
NeilBrown1a9917c2006-03-27 01:15:02 -0800324 return 0;
325}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
Pavel Emelyanov352114f2010-09-27 13:59:48 +0400327static inline int ip_map_update(struct net *net, struct ip_map *ipm,
328 struct unix_domain *udom, time_t expiry)
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400329{
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400330 struct sunrpc_net *sn;
331
332 sn = net_generic(net, sunrpc_net_id);
333 return __ip_map_update(sn->ip_map_cache, ipm, udom, expiry);
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400334}
335
Stanislav Kinsburskye5f06f72012-04-11 15:13:28 +0400336void svcauth_unix_purge(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337{
Stanislav Kinsburskye5f06f72012-04-11 15:13:28 +0400338 struct sunrpc_net *sn;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400339
Stanislav Kinsburskye5f06f72012-04-11 15:13:28 +0400340 sn = net_generic(net, sunrpc_net_id);
341 cache_purge(sn->ip_map_cache);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342}
Trond Myklebust24c37672008-12-23 16:30:12 -0500343EXPORT_SYMBOL_GPL(svcauth_unix_purge);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700345static inline struct ip_map *
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400346ip_map_cached_get(struct svc_xprt *xprt)
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700347{
Tom Tuckerdef13d72007-12-30 21:08:08 -0600348 struct ip_map *ipm = NULL;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400349 struct sunrpc_net *sn;
Tom Tuckerdef13d72007-12-30 21:08:08 -0600350
351 if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
352 spin_lock(&xprt->xpt_lock);
353 ipm = xprt->xpt_auth_cache;
354 if (ipm != NULL) {
355 if (!cache_valid(&ipm->h)) {
356 /*
357 * The entry has been invalidated since it was
358 * remembered, e.g. by a second mount from the
359 * same IP address.
360 */
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400361 sn = net_generic(xprt->xpt_net, sunrpc_net_id);
Tom Tuckerdef13d72007-12-30 21:08:08 -0600362 xprt->xpt_auth_cache = NULL;
363 spin_unlock(&xprt->xpt_lock);
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400364 cache_put(&ipm->h, sn->ip_map_cache);
Tom Tuckerdef13d72007-12-30 21:08:08 -0600365 return NULL;
366 }
367 cache_get(&ipm->h);
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700368 }
Tom Tuckerdef13d72007-12-30 21:08:08 -0600369 spin_unlock(&xprt->xpt_lock);
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700370 }
371 return ipm;
372}
373
374static inline void
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400375ip_map_cached_put(struct svc_xprt *xprt, struct ip_map *ipm)
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700376{
Tom Tuckerdef13d72007-12-30 21:08:08 -0600377 if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
378 spin_lock(&xprt->xpt_lock);
379 if (xprt->xpt_auth_cache == NULL) {
380 /* newly cached, keep the reference */
381 xprt->xpt_auth_cache = ipm;
382 ipm = NULL;
383 }
384 spin_unlock(&xprt->xpt_lock);
NeilBrown30f3dee2007-04-16 22:53:25 -0700385 }
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400386 if (ipm) {
387 struct sunrpc_net *sn;
388
389 sn = net_generic(xprt->xpt_net, sunrpc_net_id);
390 cache_put(&ipm->h, sn->ip_map_cache);
391 }
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700392}
393
394void
Pavel Emelyanove3bfca02010-09-27 13:58:42 +0400395svcauth_unix_info_release(struct svc_xprt *xpt)
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700396{
Pavel Emelyanove3bfca02010-09-27 13:58:42 +0400397 struct ip_map *ipm;
398
399 ipm = xpt->xpt_auth_cache;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400400 if (ipm != NULL) {
401 struct sunrpc_net *sn;
402
403 sn = net_generic(xpt->xpt_net, sunrpc_net_id);
404 cache_put(&ipm->h, sn->ip_map_cache);
405 }
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700406}
407
NeilBrown3fc605a2007-02-14 00:33:13 -0800408/****************************************************************************
409 * auth.unix.gid cache
410 * simple cache to map a UID to a list of GIDs
411 * because AUTH_UNIX aka AUTH_SYS has a max of 16
412 */
413#define GID_HASHBITS 8
414#define GID_HASHMAX (1<<GID_HASHBITS)
NeilBrown3fc605a2007-02-14 00:33:13 -0800415
416struct unix_gid {
417 struct cache_head h;
418 uid_t uid;
419 struct group_info *gi;
420};
NeilBrown3fc605a2007-02-14 00:33:13 -0800421
422static void unix_gid_put(struct kref *kref)
423{
424 struct cache_head *item = container_of(kref, struct cache_head, ref);
425 struct unix_gid *ug = container_of(item, struct unix_gid, h);
426 if (test_bit(CACHE_VALID, &item->flags) &&
427 !test_bit(CACHE_NEGATIVE, &item->flags))
428 put_group_info(ug->gi);
429 kfree(ug);
430}
431
432static int unix_gid_match(struct cache_head *corig, struct cache_head *cnew)
433{
434 struct unix_gid *orig = container_of(corig, struct unix_gid, h);
435 struct unix_gid *new = container_of(cnew, struct unix_gid, h);
436 return orig->uid == new->uid;
437}
438static void unix_gid_init(struct cache_head *cnew, struct cache_head *citem)
439{
440 struct unix_gid *new = container_of(cnew, struct unix_gid, h);
441 struct unix_gid *item = container_of(citem, struct unix_gid, h);
442 new->uid = item->uid;
443}
444static void unix_gid_update(struct cache_head *cnew, struct cache_head *citem)
445{
446 struct unix_gid *new = container_of(cnew, struct unix_gid, h);
447 struct unix_gid *item = container_of(citem, struct unix_gid, h);
448
449 get_group_info(item->gi);
450 new->gi = item->gi;
451}
452static struct cache_head *unix_gid_alloc(void)
453{
454 struct unix_gid *g = kmalloc(sizeof(*g), GFP_KERNEL);
455 if (g)
456 return &g->h;
457 else
458 return NULL;
459}
460
461static void unix_gid_request(struct cache_detail *cd,
462 struct cache_head *h,
463 char **bpp, int *blen)
464{
465 char tuid[20];
466 struct unix_gid *ug = container_of(h, struct unix_gid, h);
467
468 snprintf(tuid, 20, "%u", ug->uid);
469 qword_add(bpp, blen, tuid);
470 (*bpp)[-1] = '\n';
471}
472
Trond Myklebustbc74b4f2009-08-09 15:14:29 -0400473static int unix_gid_upcall(struct cache_detail *cd, struct cache_head *h)
474{
475 return sunrpc_cache_pipe_upcall(cd, h, unix_gid_request);
476}
477
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400478static struct unix_gid *unix_gid_lookup(struct cache_detail *cd, uid_t uid);
NeilBrown3fc605a2007-02-14 00:33:13 -0800479
480static int unix_gid_parse(struct cache_detail *cd,
481 char *mesg, int mlen)
482{
483 /* uid expiry Ngid gid0 gid1 ... gidN-1 */
484 int uid;
485 int gids;
486 int rv;
487 int i;
488 int err;
489 time_t expiry;
490 struct unix_gid ug, *ugp;
491
Dan Carpenter34769642012-01-20 10:48:18 +0300492 if (mesg[mlen - 1] != '\n')
NeilBrown3fc605a2007-02-14 00:33:13 -0800493 return -EINVAL;
494 mesg[mlen-1] = 0;
495
496 rv = get_int(&mesg, &uid);
497 if (rv)
498 return -EINVAL;
499 ug.uid = uid;
500
501 expiry = get_expiry(&mesg);
502 if (expiry == 0)
503 return -EINVAL;
504
505 rv = get_int(&mesg, &gids);
506 if (rv || gids < 0 || gids > 8192)
507 return -EINVAL;
508
509 ug.gi = groups_alloc(gids);
510 if (!ug.gi)
511 return -ENOMEM;
512
513 for (i = 0 ; i < gids ; i++) {
514 int gid;
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800515 kgid_t kgid;
NeilBrown3fc605a2007-02-14 00:33:13 -0800516 rv = get_int(&mesg, &gid);
517 err = -EINVAL;
518 if (rv)
519 goto out;
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800520 kgid = make_kgid(&init_user_ns, gid);
521 if (!gid_valid(kgid))
522 goto out;
523 GROUP_AT(ug.gi, i) = kgid;
NeilBrown3fc605a2007-02-14 00:33:13 -0800524 }
525
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400526 ugp = unix_gid_lookup(cd, uid);
NeilBrown3fc605a2007-02-14 00:33:13 -0800527 if (ugp) {
528 struct cache_head *ch;
529 ug.h.flags = 0;
530 ug.h.expiry_time = expiry;
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400531 ch = sunrpc_cache_update(cd,
NeilBrown3fc605a2007-02-14 00:33:13 -0800532 &ug.h, &ugp->h,
533 hash_long(uid, GID_HASHBITS));
534 if (!ch)
535 err = -ENOMEM;
536 else {
537 err = 0;
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400538 cache_put(ch, cd);
NeilBrown3fc605a2007-02-14 00:33:13 -0800539 }
540 } else
541 err = -ENOMEM;
542 out:
543 if (ug.gi)
544 put_group_info(ug.gi);
545 return err;
546}
547
548static int unix_gid_show(struct seq_file *m,
549 struct cache_detail *cd,
550 struct cache_head *h)
551{
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800552 struct user_namespace *user_ns = current_user_ns();
NeilBrown3fc605a2007-02-14 00:33:13 -0800553 struct unix_gid *ug;
554 int i;
555 int glen;
556
557 if (h == NULL) {
558 seq_puts(m, "#uid cnt: gids...\n");
559 return 0;
560 }
561 ug = container_of(h, struct unix_gid, h);
562 if (test_bit(CACHE_VALID, &h->flags) &&
563 !test_bit(CACHE_NEGATIVE, &h->flags))
564 glen = ug->gi->ngroups;
565 else
566 glen = 0;
567
J. Bruce Fieldsccdb3572010-03-02 15:49:21 -0500568 seq_printf(m, "%u %d:", ug->uid, glen);
NeilBrown3fc605a2007-02-14 00:33:13 -0800569 for (i = 0; i < glen; i++)
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800570 seq_printf(m, " %d", from_kgid_munged(user_ns, GROUP_AT(ug->gi, i)));
NeilBrown3fc605a2007-02-14 00:33:13 -0800571 seq_printf(m, "\n");
572 return 0;
573}
574
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400575static struct cache_detail unix_gid_cache_template = {
NeilBrown3fc605a2007-02-14 00:33:13 -0800576 .owner = THIS_MODULE,
577 .hash_size = GID_HASHMAX,
NeilBrown3fc605a2007-02-14 00:33:13 -0800578 .name = "auth.unix.gid",
579 .cache_put = unix_gid_put,
Trond Myklebustbc74b4f2009-08-09 15:14:29 -0400580 .cache_upcall = unix_gid_upcall,
NeilBrown3fc605a2007-02-14 00:33:13 -0800581 .cache_parse = unix_gid_parse,
582 .cache_show = unix_gid_show,
583 .match = unix_gid_match,
584 .init = unix_gid_init,
585 .update = unix_gid_update,
586 .alloc = unix_gid_alloc,
587};
588
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400589int unix_gid_cache_create(struct net *net)
590{
591 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
592 struct cache_detail *cd;
593 int err;
594
595 cd = cache_create_net(&unix_gid_cache_template, net);
596 if (IS_ERR(cd))
597 return PTR_ERR(cd);
598 err = cache_register_net(cd, net);
599 if (err) {
600 cache_destroy_net(cd, net);
601 return err;
602 }
603 sn->unix_gid_cache = cd;
604 return 0;
605}
606
607void unix_gid_cache_destroy(struct net *net)
608{
609 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
610 struct cache_detail *cd = sn->unix_gid_cache;
611
612 sn->unix_gid_cache = NULL;
613 cache_purge(cd);
614 cache_unregister_net(cd, net);
615 cache_destroy_net(cd, net);
616}
617
618static struct unix_gid *unix_gid_lookup(struct cache_detail *cd, uid_t uid)
NeilBrown3fc605a2007-02-14 00:33:13 -0800619{
620 struct unix_gid ug;
621 struct cache_head *ch;
622
623 ug.uid = uid;
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400624 ch = sunrpc_cache_lookup(cd, &ug.h, hash_long(uid, GID_HASHBITS));
NeilBrown3fc605a2007-02-14 00:33:13 -0800625 if (ch)
626 return container_of(ch, struct unix_gid, h);
627 else
628 return NULL;
629}
630
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400631static struct group_info *unix_gid_find(uid_t uid, struct svc_rqst *rqstp)
NeilBrown3fc605a2007-02-14 00:33:13 -0800632{
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400633 struct unix_gid *ug;
634 struct group_info *gi;
635 int ret;
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400636 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net,
637 sunrpc_net_id);
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400638
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400639 ug = unix_gid_lookup(sn->unix_gid_cache, uid);
NeilBrown3fc605a2007-02-14 00:33:13 -0800640 if (!ug)
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400641 return ERR_PTR(-EAGAIN);
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400642 ret = cache_check(sn->unix_gid_cache, &ug->h, &rqstp->rq_chandle);
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400643 switch (ret) {
NeilBrown3fc605a2007-02-14 00:33:13 -0800644 case -ENOENT:
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400645 return ERR_PTR(-ENOENT);
NeilBrown1ebede82010-08-12 17:04:07 +1000646 case -ETIMEDOUT:
647 return ERR_PTR(-ESHUTDOWN);
NeilBrown3fc605a2007-02-14 00:33:13 -0800648 case 0:
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400649 gi = get_group_info(ug->gi);
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400650 cache_put(&ug->h, sn->unix_gid_cache);
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400651 return gi;
NeilBrown3fc605a2007-02-14 00:33:13 -0800652 default:
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400653 return ERR_PTR(-EAGAIN);
NeilBrown3fc605a2007-02-14 00:33:13 -0800654 }
655}
656
J. Bruce Fields3ab4d8b2007-07-17 04:04:46 -0700657int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658svcauth_unix_set_client(struct svc_rqst *rqstp)
659{
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100660 struct sockaddr_in *sin;
661 struct sockaddr_in6 *sin6, sin6_storage;
NeilBrown1a9917c2006-03-27 01:15:02 -0800662 struct ip_map *ipm;
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400663 struct group_info *gi;
664 struct svc_cred *cred = &rqstp->rq_cred;
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400665 struct svc_xprt *xprt = rqstp->rq_xprt;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400666 struct net *net = xprt->xpt_net;
667 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100669 switch (rqstp->rq_addr.ss_family) {
670 case AF_INET:
671 sin = svc_addr_in(rqstp);
672 sin6 = &sin6_storage;
Brian Haleyb301e822009-10-07 13:58:25 -0700673 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &sin6->sin6_addr);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100674 break;
675 case AF_INET6:
676 sin6 = svc_addr_in6(rqstp);
677 break;
678 default:
679 BUG();
680 }
681
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 rqstp->rq_client = NULL;
683 if (rqstp->rq_proc == 0)
684 return SVC_OK;
685
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400686 ipm = ip_map_cached_get(xprt);
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700687 if (ipm == NULL)
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400688 ipm = __ip_map_lookup(sn->ip_map_cache, rqstp->rq_server->sv_program->pg_class,
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100689 &sin6->sin6_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690
691 if (ipm == NULL)
692 return SVC_DENIED;
693
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400694 switch (cache_check(sn->ip_map_cache, &ipm->h, &rqstp->rq_chandle)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695 default:
696 BUG();
J.Bruce Fieldse0bb89e2006-12-13 00:35:25 -0800697 case -ETIMEDOUT:
NeilBrown1ebede82010-08-12 17:04:07 +1000698 return SVC_CLOSE;
699 case -EAGAIN:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 return SVC_DROP;
701 case -ENOENT:
702 return SVC_DENIED;
703 case 0:
704 rqstp->rq_client = &ipm->m_client->h;
NeilBrownefc36aa2006-03-27 01:14:59 -0800705 kref_get(&rqstp->rq_client->ref);
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400706 ip_map_cached_put(xprt, ipm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 break;
708 }
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400709
710 gi = unix_gid_find(cred->cr_uid, rqstp);
711 switch (PTR_ERR(gi)) {
712 case -EAGAIN:
713 return SVC_DROP;
NeilBrown1ebede82010-08-12 17:04:07 +1000714 case -ESHUTDOWN:
715 return SVC_CLOSE;
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400716 case -ENOENT:
717 break;
718 default:
719 put_group_info(cred->cr_group_info);
720 cred->cr_group_info = gi;
721 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722 return SVC_OK;
723}
724
Trond Myklebust24c37672008-12-23 16:30:12 -0500725EXPORT_SYMBOL_GPL(svcauth_unix_set_client);
J. Bruce Fields3ab4d8b2007-07-17 04:04:46 -0700726
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727static int
Alexey Dobriyand8ed0292006-09-26 22:29:38 -0700728svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729{
730 struct kvec *argv = &rqstp->rq_arg.head[0];
731 struct kvec *resv = &rqstp->rq_res.head[0];
732 struct svc_cred *cred = &rqstp->rq_cred;
733
734 cred->cr_group_info = NULL;
J. Bruce Fields03a4e1f2012-05-14 19:55:22 -0400735 cred->cr_principal = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 rqstp->rq_client = NULL;
737
738 if (argv->iov_len < 3*4)
739 return SVC_GARBAGE;
740
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800741 if (svc_getu32(argv) != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742 dprintk("svc: bad null cred\n");
743 *authp = rpc_autherr_badcred;
744 return SVC_DENIED;
745 }
Alexey Dobriyan76994312006-09-26 22:28:46 -0700746 if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 dprintk("svc: bad null verf\n");
748 *authp = rpc_autherr_badverf;
749 return SVC_DENIED;
750 }
751
752 /* Signal that mapping to nobody uid/gid is required */
753 cred->cr_uid = (uid_t) -1;
754 cred->cr_gid = (gid_t) -1;
755 cred->cr_group_info = groups_alloc(0);
756 if (cred->cr_group_info == NULL)
NeilBrown1ebede82010-08-12 17:04:07 +1000757 return SVC_CLOSE; /* kmalloc failure - client must retry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758
759 /* Put NULL verifier */
Alexey Dobriyan76994312006-09-26 22:28:46 -0700760 svc_putnl(resv, RPC_AUTH_NULL);
761 svc_putnl(resv, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762
J. Bruce Fieldsd5497fc2012-05-14 22:06:49 -0400763 rqstp->rq_cred.cr_flavor = RPC_AUTH_NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764 return SVC_OK;
765}
766
767static int
768svcauth_null_release(struct svc_rqst *rqstp)
769{
770 if (rqstp->rq_client)
771 auth_domain_put(rqstp->rq_client);
772 rqstp->rq_client = NULL;
773 if (rqstp->rq_cred.cr_group_info)
774 put_group_info(rqstp->rq_cred.cr_group_info);
775 rqstp->rq_cred.cr_group_info = NULL;
776
777 return 0; /* don't drop */
778}
779
780
781struct auth_ops svcauth_null = {
782 .name = "null",
783 .owner = THIS_MODULE,
784 .flavour = RPC_AUTH_NULL,
785 .accept = svcauth_null_accept,
786 .release = svcauth_null_release,
787 .set_client = svcauth_unix_set_client,
788};
789
790
791static int
Alexey Dobriyand8ed0292006-09-26 22:29:38 -0700792svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793{
794 struct kvec *argv = &rqstp->rq_arg.head[0];
795 struct kvec *resv = &rqstp->rq_res.head[0];
796 struct svc_cred *cred = &rqstp->rq_cred;
797 u32 slen, i;
798 int len = argv->iov_len;
799
800 cred->cr_group_info = NULL;
J. Bruce Fields03a4e1f2012-05-14 19:55:22 -0400801 cred->cr_principal = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 rqstp->rq_client = NULL;
803
804 if ((len -= 3*4) < 0)
805 return SVC_GARBAGE;
806
807 svc_getu32(argv); /* length */
808 svc_getu32(argv); /* time stamp */
Alexey Dobriyan76994312006-09-26 22:28:46 -0700809 slen = XDR_QUADLEN(svc_getnl(argv)); /* machname length */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 if (slen > 64 || (len -= (slen + 3)*4) < 0)
811 goto badcred;
Alexey Dobriyand8ed0292006-09-26 22:29:38 -0700812 argv->iov_base = (void*)((__be32*)argv->iov_base + slen); /* skip machname */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813 argv->iov_len -= slen*4;
814
Alexey Dobriyan76994312006-09-26 22:28:46 -0700815 cred->cr_uid = svc_getnl(argv); /* uid */
816 cred->cr_gid = svc_getnl(argv); /* gid */
817 slen = svc_getnl(argv); /* gids length */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 if (slen > 16 || (len -= (slen + 2)*4) < 0)
819 goto badcred;
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400820 cred->cr_group_info = groups_alloc(slen);
821 if (cred->cr_group_info == NULL)
NeilBrown1ebede82010-08-12 17:04:07 +1000822 return SVC_CLOSE;
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800823 for (i = 0; i < slen; i++) {
824 kgid_t kgid = make_kgid(&init_user_ns, svc_getnl(argv));
825 if (!gid_valid(kgid))
826 goto badcred;
827 GROUP_AT(cred->cr_group_info, i) = kgid;
828 }
Alexey Dobriyan76994312006-09-26 22:28:46 -0700829 if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830 *authp = rpc_autherr_badverf;
831 return SVC_DENIED;
832 }
833
834 /* Put NULL verifier */
Alexey Dobriyan76994312006-09-26 22:28:46 -0700835 svc_putnl(resv, RPC_AUTH_NULL);
836 svc_putnl(resv, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837
J. Bruce Fieldsd5497fc2012-05-14 22:06:49 -0400838 rqstp->rq_cred.cr_flavor = RPC_AUTH_UNIX;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839 return SVC_OK;
840
841badcred:
842 *authp = rpc_autherr_badcred;
843 return SVC_DENIED;
844}
845
846static int
847svcauth_unix_release(struct svc_rqst *rqstp)
848{
849 /* Verifier (such as it is) is already in place.
850 */
851 if (rqstp->rq_client)
852 auth_domain_put(rqstp->rq_client);
853 rqstp->rq_client = NULL;
854 if (rqstp->rq_cred.cr_group_info)
855 put_group_info(rqstp->rq_cred.cr_group_info);
856 rqstp->rq_cred.cr_group_info = NULL;
857
858 return 0;
859}
860
861
862struct auth_ops svcauth_unix = {
863 .name = "unix",
864 .owner = THIS_MODULE,
865 .flavour = RPC_AUTH_UNIX,
866 .accept = svcauth_unix_accept,
867 .release = svcauth_unix_release,
868 .domain_release = svcauth_unix_domain_release,
869 .set_client = svcauth_unix_set_client,
870};
871
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400872static struct cache_detail ip_map_cache_template = {
873 .owner = THIS_MODULE,
874 .hash_size = IP_HASHMAX,
875 .name = "auth.unix.ip",
876 .cache_put = ip_map_put,
877 .cache_upcall = ip_map_upcall,
878 .cache_parse = ip_map_parse,
879 .cache_show = ip_map_show,
880 .match = ip_map_match,
881 .init = ip_map_init,
882 .update = update,
883 .alloc = ip_map_alloc,
884};
885
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400886int ip_map_cache_create(struct net *net)
887{
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400888 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400889 struct cache_detail *cd;
890 int err;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400891
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400892 cd = cache_create_net(&ip_map_cache_template, net);
893 if (IS_ERR(cd))
894 return PTR_ERR(cd);
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400895 err = cache_register_net(cd, net);
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400896 if (err) {
897 cache_destroy_net(cd, net);
898 return err;
899 }
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400900 sn->ip_map_cache = cd;
901 return 0;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400902}
903
904void ip_map_cache_destroy(struct net *net)
905{
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400906 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
907 struct cache_detail *cd = sn->ip_map_cache;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400908
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400909 sn->ip_map_cache = NULL;
910 cache_purge(cd);
911 cache_unregister_net(cd, net);
912 cache_destroy_net(cd, net);
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400913}