blob: c3f9e1ef7f531857f432993896d13d0ae8442876 [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
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400160static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, struct in6_addr *addr);
161static 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 -0700162
163static int ip_map_parse(struct cache_detail *cd,
164 char *mesg, int mlen)
165{
166 /* class ipaddress [domainname] */
167 /* should be safe just to use the start of the input buffer
168 * for scratch: */
169 char *buf = mesg;
170 int len;
NeilBrown1a9917c2006-03-27 01:15:02 -0800171 char class[8];
Chuck Lever07396052010-01-26 14:03:47 -0500172 union {
173 struct sockaddr sa;
174 struct sockaddr_in s4;
175 struct sockaddr_in6 s6;
176 } address;
177 struct sockaddr_in6 sin6;
NeilBrown1a9917c2006-03-27 01:15:02 -0800178 int err;
179
180 struct ip_map *ipmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 struct auth_domain *dom;
182 time_t expiry;
183
184 if (mesg[mlen-1] != '\n')
185 return -EINVAL;
186 mesg[mlen-1] = 0;
187
188 /* class */
NeilBrown1a9917c2006-03-27 01:15:02 -0800189 len = qword_get(&mesg, class, sizeof(class));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 if (len <= 0) return -EINVAL;
191
192 /* ip address */
193 len = qword_get(&mesg, buf, mlen);
194 if (len <= 0) return -EINVAL;
195
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400196 if (rpc_pton(cd->net, buf, len, &address.sa, sizeof(address)) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 return -EINVAL;
Chuck Lever07396052010-01-26 14:03:47 -0500198 switch (address.sa.sa_family) {
199 case AF_INET:
200 /* Form a mapped IPv4 address in sin6 */
Chuck Lever07396052010-01-26 14:03:47 -0500201 sin6.sin6_family = AF_INET6;
Pavel Emelyanov70dc78d2010-10-05 20:48:02 +0400202 ipv6_addr_set_v4mapped(address.s4.sin_addr.s_addr,
203 &sin6.sin6_addr);
Chuck Lever07396052010-01-26 14:03:47 -0500204 break;
Eric Dumazetdfd56b82011-12-10 09:48:31 +0000205#if IS_ENABLED(CONFIG_IPV6)
Chuck Lever07396052010-01-26 14:03:47 -0500206 case AF_INET6:
207 memcpy(&sin6, &address.s6, sizeof(sin6));
208 break;
209#endif
210 default:
211 return -EINVAL;
212 }
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 expiry = get_expiry(&mesg);
215 if (expiry ==0)
216 return -EINVAL;
217
218 /* domainname, or empty for NEGATIVE */
219 len = qword_get(&mesg, buf, mlen);
220 if (len < 0) return -EINVAL;
221
222 if (len) {
223 dom = unix_domain_find(buf);
224 if (dom == NULL)
225 return -ENOENT;
226 } else
227 dom = NULL;
228
Chuck Lever07396052010-01-26 14:03:47 -0500229 /* IPv6 scope IDs are ignored for now */
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400230 ipmp = __ip_map_lookup(cd, class, &sin6.sin6_addr);
NeilBrown1a9917c2006-03-27 01:15:02 -0800231 if (ipmp) {
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400232 err = __ip_map_update(cd, ipmp,
NeilBrown1a9917c2006-03-27 01:15:02 -0800233 container_of(dom, struct unix_domain, h),
234 expiry);
235 } else
236 err = -ENOMEM;
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 if (dom)
239 auth_domain_put(dom);
NeilBrown1a9917c2006-03-27 01:15:02 -0800240
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 cache_flush();
NeilBrown1a9917c2006-03-27 01:15:02 -0800242 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243}
244
245static int ip_map_show(struct seq_file *m,
246 struct cache_detail *cd,
247 struct cache_head *h)
248{
249 struct ip_map *im;
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100250 struct in6_addr addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 char *dom = "-no-domain-";
252
253 if (h == NULL) {
254 seq_puts(m, "#class IP domain\n");
255 return 0;
256 }
257 im = container_of(h, struct ip_map, h);
258 /* class addr domain */
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +0000259 addr = im->m_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800261 if (test_bit(CACHE_VALID, &h->flags) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 !test_bit(CACHE_NEGATIVE, &h->flags))
263 dom = im->m_client->h.name;
264
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100265 if (ipv6_addr_v4mapped(&addr)) {
Harvey Harrison21454aa2008-10-31 00:54:56 -0700266 seq_printf(m, "%s %pI4 %s\n",
267 im->m_class, &addr.s6_addr32[3], dom);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100268 } else {
Harvey Harrison5b095d9892008-10-29 12:52:50 -0700269 seq_printf(m, "%s %pI6 %s\n", im->m_class, &addr, dom);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100270 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 return 0;
272}
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400275static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class,
276 struct in6_addr *addr)
NeilBrown1a9917c2006-03-27 01:15:02 -0800277{
278 struct ip_map ip;
279 struct cache_head *ch;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
NeilBrown1a9917c2006-03-27 01:15:02 -0800281 strcpy(ip.m_class, class);
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +0000282 ip.m_addr = *addr;
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400283 ch = sunrpc_cache_lookup(cd, &ip.h,
NeilBrown1a9917c2006-03-27 01:15:02 -0800284 hash_str(class, IP_HASHBITS) ^
Eric Dumazetddbe5032012-07-18 08:11:12 +0000285 hash_ip6(addr));
NeilBrown1a9917c2006-03-27 01:15:02 -0800286
287 if (ch)
288 return container_of(ch, struct ip_map, h);
289 else
290 return NULL;
291}
292
Pavel Emelyanov352114f2010-09-27 13:59:48 +0400293static inline struct ip_map *ip_map_lookup(struct net *net, char *class,
294 struct in6_addr *addr)
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400295{
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400296 struct sunrpc_net *sn;
297
298 sn = net_generic(net, sunrpc_net_id);
299 return __ip_map_lookup(sn->ip_map_cache, class, addr);
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400300}
301
302static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm,
303 struct unix_domain *udom, time_t expiry)
NeilBrown1a9917c2006-03-27 01:15:02 -0800304{
305 struct ip_map ip;
306 struct cache_head *ch;
307
308 ip.m_client = udom;
309 ip.h.flags = 0;
310 if (!udom)
311 set_bit(CACHE_NEGATIVE, &ip.h.flags);
NeilBrown1a9917c2006-03-27 01:15:02 -0800312 ip.h.expiry_time = expiry;
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400313 ch = sunrpc_cache_update(cd, &ip.h, &ipm->h,
NeilBrown1a9917c2006-03-27 01:15:02 -0800314 hash_str(ipm->m_class, IP_HASHBITS) ^
Eric Dumazetddbe5032012-07-18 08:11:12 +0000315 hash_ip6(&ipm->m_addr));
NeilBrown1a9917c2006-03-27 01:15:02 -0800316 if (!ch)
317 return -ENOMEM;
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400318 cache_put(ch, cd);
NeilBrown1a9917c2006-03-27 01:15:02 -0800319 return 0;
320}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321
Pavel Emelyanov352114f2010-09-27 13:59:48 +0400322static inline int ip_map_update(struct net *net, struct ip_map *ipm,
323 struct unix_domain *udom, time_t expiry)
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400324{
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400325 struct sunrpc_net *sn;
326
327 sn = net_generic(net, sunrpc_net_id);
328 return __ip_map_update(sn->ip_map_cache, ipm, udom, expiry);
Pavel Emelyanovbf18ab32010-09-27 13:57:36 +0400329}
330
Stanislav Kinsburskye5f06f72012-04-11 15:13:28 +0400331void svcauth_unix_purge(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332{
Stanislav Kinsburskye5f06f72012-04-11 15:13:28 +0400333 struct sunrpc_net *sn;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400334
Stanislav Kinsburskye5f06f72012-04-11 15:13:28 +0400335 sn = net_generic(net, sunrpc_net_id);
336 cache_purge(sn->ip_map_cache);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337}
Trond Myklebust24c37672008-12-23 16:30:12 -0500338EXPORT_SYMBOL_GPL(svcauth_unix_purge);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700340static inline struct ip_map *
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400341ip_map_cached_get(struct svc_xprt *xprt)
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700342{
Tom Tuckerdef13d72007-12-30 21:08:08 -0600343 struct ip_map *ipm = NULL;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400344 struct sunrpc_net *sn;
Tom Tuckerdef13d72007-12-30 21:08:08 -0600345
346 if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
347 spin_lock(&xprt->xpt_lock);
348 ipm = xprt->xpt_auth_cache;
349 if (ipm != NULL) {
350 if (!cache_valid(&ipm->h)) {
351 /*
352 * The entry has been invalidated since it was
353 * remembered, e.g. by a second mount from the
354 * same IP address.
355 */
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400356 sn = net_generic(xprt->xpt_net, sunrpc_net_id);
Tom Tuckerdef13d72007-12-30 21:08:08 -0600357 xprt->xpt_auth_cache = NULL;
358 spin_unlock(&xprt->xpt_lock);
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400359 cache_put(&ipm->h, sn->ip_map_cache);
Tom Tuckerdef13d72007-12-30 21:08:08 -0600360 return NULL;
361 }
362 cache_get(&ipm->h);
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700363 }
Tom Tuckerdef13d72007-12-30 21:08:08 -0600364 spin_unlock(&xprt->xpt_lock);
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700365 }
366 return ipm;
367}
368
369static inline void
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400370ip_map_cached_put(struct svc_xprt *xprt, struct ip_map *ipm)
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700371{
Tom Tuckerdef13d72007-12-30 21:08:08 -0600372 if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
373 spin_lock(&xprt->xpt_lock);
374 if (xprt->xpt_auth_cache == NULL) {
375 /* newly cached, keep the reference */
376 xprt->xpt_auth_cache = ipm;
377 ipm = NULL;
378 }
379 spin_unlock(&xprt->xpt_lock);
NeilBrown30f3dee2007-04-16 22:53:25 -0700380 }
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400381 if (ipm) {
382 struct sunrpc_net *sn;
383
384 sn = net_generic(xprt->xpt_net, sunrpc_net_id);
385 cache_put(&ipm->h, sn->ip_map_cache);
386 }
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700387}
388
389void
Pavel Emelyanove3bfca02010-09-27 13:58:42 +0400390svcauth_unix_info_release(struct svc_xprt *xpt)
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700391{
Pavel Emelyanove3bfca02010-09-27 13:58:42 +0400392 struct ip_map *ipm;
393
394 ipm = xpt->xpt_auth_cache;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400395 if (ipm != NULL) {
396 struct sunrpc_net *sn;
397
398 sn = net_generic(xpt->xpt_net, sunrpc_net_id);
399 cache_put(&ipm->h, sn->ip_map_cache);
400 }
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700401}
402
NeilBrown3fc605a2007-02-14 00:33:13 -0800403/****************************************************************************
404 * auth.unix.gid cache
405 * simple cache to map a UID to a list of GIDs
406 * because AUTH_UNIX aka AUTH_SYS has a max of 16
407 */
408#define GID_HASHBITS 8
409#define GID_HASHMAX (1<<GID_HASHBITS)
NeilBrown3fc605a2007-02-14 00:33:13 -0800410
411struct unix_gid {
412 struct cache_head h;
Eric W. Biederman7eaf0402013-02-01 16:31:17 -0800413 kuid_t uid;
NeilBrown3fc605a2007-02-14 00:33:13 -0800414 struct group_info *gi;
415};
NeilBrown3fc605a2007-02-14 00:33:13 -0800416
Eric W. Biederman9e469e32013-02-02 01:57:30 -0800417static int unix_gid_hash(kuid_t uid)
418{
419 return hash_long(from_kuid(&init_user_ns, uid), GID_HASHBITS);
420}
421
NeilBrown3fc605a2007-02-14 00:33:13 -0800422static 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);
Eric W. Biederman0b4d51b2013-02-01 16:39:32 -0800436 return uid_eq(orig->uid, new->uid);
NeilBrown3fc605a2007-02-14 00:33:13 -0800437}
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
Eric W. Biederman25da9262013-02-02 02:49:44 -0800468 snprintf(tuid, 20, "%u", from_kuid(&init_user_ns, ug->uid));
NeilBrown3fc605a2007-02-14 00:33:13 -0800469 qword_add(bpp, blen, tuid);
470 (*bpp)[-1] = '\n';
471}
472
Eric W. Biederman7eaf0402013-02-01 16:31:17 -0800473static struct unix_gid *unix_gid_lookup(struct cache_detail *cd, kuid_t uid);
NeilBrown3fc605a2007-02-14 00:33:13 -0800474
475static int unix_gid_parse(struct cache_detail *cd,
476 char *mesg, int mlen)
477{
478 /* uid expiry Ngid gid0 gid1 ... gidN-1 */
Eric W. Biederman25da9262013-02-02 02:49:44 -0800479 int id;
480 kuid_t uid;
NeilBrown3fc605a2007-02-14 00:33:13 -0800481 int gids;
482 int rv;
483 int i;
484 int err;
485 time_t expiry;
486 struct unix_gid ug, *ugp;
487
Dan Carpenter34769642012-01-20 10:48:18 +0300488 if (mesg[mlen - 1] != '\n')
NeilBrown3fc605a2007-02-14 00:33:13 -0800489 return -EINVAL;
490 mesg[mlen-1] = 0;
491
Eric W. Biederman25da9262013-02-02 02:49:44 -0800492 rv = get_int(&mesg, &id);
NeilBrown3fc605a2007-02-14 00:33:13 -0800493 if (rv)
494 return -EINVAL;
Eric W. Biederman25da9262013-02-02 02:49:44 -0800495 uid = make_kuid(&init_user_ns, id);
496 if (!uid_valid(uid))
497 return -EINVAL;
NeilBrown3fc605a2007-02-14 00:33:13 -0800498 ug.uid = uid;
499
500 expiry = get_expiry(&mesg);
501 if (expiry == 0)
502 return -EINVAL;
503
504 rv = get_int(&mesg, &gids);
505 if (rv || gids < 0 || gids > 8192)
506 return -EINVAL;
507
508 ug.gi = groups_alloc(gids);
509 if (!ug.gi)
510 return -ENOMEM;
511
512 for (i = 0 ; i < gids ; i++) {
513 int gid;
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800514 kgid_t kgid;
NeilBrown3fc605a2007-02-14 00:33:13 -0800515 rv = get_int(&mesg, &gid);
516 err = -EINVAL;
517 if (rv)
518 goto out;
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800519 kgid = make_kgid(&init_user_ns, gid);
520 if (!gid_valid(kgid))
521 goto out;
522 GROUP_AT(ug.gi, i) = kgid;
NeilBrown3fc605a2007-02-14 00:33:13 -0800523 }
524
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400525 ugp = unix_gid_lookup(cd, uid);
NeilBrown3fc605a2007-02-14 00:33:13 -0800526 if (ugp) {
527 struct cache_head *ch;
528 ug.h.flags = 0;
529 ug.h.expiry_time = expiry;
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400530 ch = sunrpc_cache_update(cd,
NeilBrown3fc605a2007-02-14 00:33:13 -0800531 &ug.h, &ugp->h,
Eric W. Biederman9e469e32013-02-02 01:57:30 -0800532 unix_gid_hash(uid));
NeilBrown3fc605a2007-02-14 00:33:13 -0800533 if (!ch)
534 err = -ENOMEM;
535 else {
536 err = 0;
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400537 cache_put(ch, cd);
NeilBrown3fc605a2007-02-14 00:33:13 -0800538 }
539 } else
540 err = -ENOMEM;
541 out:
542 if (ug.gi)
543 put_group_info(ug.gi);
544 return err;
545}
546
547static int unix_gid_show(struct seq_file *m,
548 struct cache_detail *cd,
549 struct cache_head *h)
550{
Eric W. Biederman25da9262013-02-02 02:49:44 -0800551 struct user_namespace *user_ns = &init_user_ns;
NeilBrown3fc605a2007-02-14 00:33:13 -0800552 struct unix_gid *ug;
553 int i;
554 int glen;
555
556 if (h == NULL) {
557 seq_puts(m, "#uid cnt: gids...\n");
558 return 0;
559 }
560 ug = container_of(h, struct unix_gid, h);
561 if (test_bit(CACHE_VALID, &h->flags) &&
562 !test_bit(CACHE_NEGATIVE, &h->flags))
563 glen = ug->gi->ngroups;
564 else
565 glen = 0;
566
Eric W. Biederman25da9262013-02-02 02:49:44 -0800567 seq_printf(m, "%u %d:", from_kuid_munged(user_ns, ug->uid), glen);
NeilBrown3fc605a2007-02-14 00:33:13 -0800568 for (i = 0; i < glen; i++)
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800569 seq_printf(m, " %d", from_kgid_munged(user_ns, GROUP_AT(ug->gi, i)));
NeilBrown3fc605a2007-02-14 00:33:13 -0800570 seq_printf(m, "\n");
571 return 0;
572}
573
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400574static struct cache_detail unix_gid_cache_template = {
NeilBrown3fc605a2007-02-14 00:33:13 -0800575 .owner = THIS_MODULE,
576 .hash_size = GID_HASHMAX,
NeilBrown3fc605a2007-02-14 00:33:13 -0800577 .name = "auth.unix.gid",
578 .cache_put = unix_gid_put,
Stanislav Kinsbursky73fb8472013-02-04 14:02:45 +0300579 .cache_request = unix_gid_request,
NeilBrown3fc605a2007-02-14 00:33:13 -0800580 .cache_parse = unix_gid_parse,
581 .cache_show = unix_gid_show,
582 .match = unix_gid_match,
583 .init = unix_gid_init,
584 .update = unix_gid_update,
585 .alloc = unix_gid_alloc,
586};
587
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400588int unix_gid_cache_create(struct net *net)
589{
590 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
591 struct cache_detail *cd;
592 int err;
593
594 cd = cache_create_net(&unix_gid_cache_template, net);
595 if (IS_ERR(cd))
596 return PTR_ERR(cd);
597 err = cache_register_net(cd, net);
598 if (err) {
599 cache_destroy_net(cd, net);
600 return err;
601 }
602 sn->unix_gid_cache = cd;
603 return 0;
604}
605
606void unix_gid_cache_destroy(struct net *net)
607{
608 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
609 struct cache_detail *cd = sn->unix_gid_cache;
610
611 sn->unix_gid_cache = NULL;
612 cache_purge(cd);
613 cache_unregister_net(cd, net);
614 cache_destroy_net(cd, net);
615}
616
Eric W. Biederman7eaf0402013-02-01 16:31:17 -0800617static struct unix_gid *unix_gid_lookup(struct cache_detail *cd, kuid_t uid)
NeilBrown3fc605a2007-02-14 00:33:13 -0800618{
619 struct unix_gid ug;
620 struct cache_head *ch;
621
622 ug.uid = uid;
Eric W. Biederman9e469e32013-02-02 01:57:30 -0800623 ch = sunrpc_cache_lookup(cd, &ug.h, unix_gid_hash(uid));
NeilBrown3fc605a2007-02-14 00:33:13 -0800624 if (ch)
625 return container_of(ch, struct unix_gid, h);
626 else
627 return NULL;
628}
629
Eric W. Biederman7eaf0402013-02-01 16:31:17 -0800630static struct group_info *unix_gid_find(kuid_t uid, struct svc_rqst *rqstp)
NeilBrown3fc605a2007-02-14 00:33:13 -0800631{
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400632 struct unix_gid *ug;
633 struct group_info *gi;
634 int ret;
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400635 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net,
636 sunrpc_net_id);
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400637
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400638 ug = unix_gid_lookup(sn->unix_gid_cache, uid);
NeilBrown3fc605a2007-02-14 00:33:13 -0800639 if (!ug)
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400640 return ERR_PTR(-EAGAIN);
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400641 ret = cache_check(sn->unix_gid_cache, &ug->h, &rqstp->rq_chandle);
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400642 switch (ret) {
NeilBrown3fc605a2007-02-14 00:33:13 -0800643 case -ENOENT:
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400644 return ERR_PTR(-ENOENT);
NeilBrown1ebede82010-08-12 17:04:07 +1000645 case -ETIMEDOUT:
646 return ERR_PTR(-ESHUTDOWN);
NeilBrown3fc605a2007-02-14 00:33:13 -0800647 case 0:
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400648 gi = get_group_info(ug->gi);
Stanislav Kinsbursky73393232012-01-19 21:42:29 +0400649 cache_put(&ug->h, sn->unix_gid_cache);
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400650 return gi;
NeilBrown3fc605a2007-02-14 00:33:13 -0800651 default:
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400652 return ERR_PTR(-EAGAIN);
NeilBrown3fc605a2007-02-14 00:33:13 -0800653 }
654}
655
J. Bruce Fields3ab4d8b2007-07-17 04:04:46 -0700656int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657svcauth_unix_set_client(struct svc_rqst *rqstp)
658{
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100659 struct sockaddr_in *sin;
660 struct sockaddr_in6 *sin6, sin6_storage;
NeilBrown1a9917c2006-03-27 01:15:02 -0800661 struct ip_map *ipm;
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400662 struct group_info *gi;
663 struct svc_cred *cred = &rqstp->rq_cred;
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400664 struct svc_xprt *xprt = rqstp->rq_xprt;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400665 struct net *net = xprt->xpt_net;
666 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100668 switch (rqstp->rq_addr.ss_family) {
669 case AF_INET:
670 sin = svc_addr_in(rqstp);
671 sin6 = &sin6_storage;
Brian Haleyb301e822009-10-07 13:58:25 -0700672 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &sin6->sin6_addr);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100673 break;
674 case AF_INET6:
675 sin6 = svc_addr_in6(rqstp);
676 break;
677 default:
678 BUG();
679 }
680
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 rqstp->rq_client = NULL;
682 if (rqstp->rq_proc == 0)
683 return SVC_OK;
684
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400685 ipm = ip_map_cached_get(xprt);
Greg Banks7b2b1fe2006-10-04 02:15:50 -0700686 if (ipm == NULL)
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400687 ipm = __ip_map_lookup(sn->ip_map_cache, rqstp->rq_server->sv_program->pg_class,
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100688 &sin6->sin6_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689
690 if (ipm == NULL)
691 return SVC_DENIED;
692
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400693 switch (cache_check(sn->ip_map_cache, &ipm->h, &rqstp->rq_chandle)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 default:
695 BUG();
J.Bruce Fieldse0bb89e2006-12-13 00:35:25 -0800696 case -ETIMEDOUT:
NeilBrown1ebede82010-08-12 17:04:07 +1000697 return SVC_CLOSE;
698 case -EAGAIN:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 return SVC_DROP;
700 case -ENOENT:
701 return SVC_DENIED;
702 case 0:
703 rqstp->rq_client = &ipm->m_client->h;
NeilBrownefc36aa2006-03-27 01:14:59 -0800704 kref_get(&rqstp->rq_client->ref);
Pavel Emelyanov3be44792010-09-27 13:59:13 +0400705 ip_map_cached_put(xprt, ipm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 break;
707 }
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400708
709 gi = unix_gid_find(cred->cr_uid, rqstp);
710 switch (PTR_ERR(gi)) {
711 case -EAGAIN:
712 return SVC_DROP;
NeilBrown1ebede82010-08-12 17:04:07 +1000713 case -ESHUTDOWN:
714 return SVC_CLOSE;
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400715 case -ENOENT:
716 break;
717 default:
718 put_group_info(cred->cr_group_info);
719 cred->cr_group_info = gi;
720 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721 return SVC_OK;
722}
723
Trond Myklebust24c37672008-12-23 16:30:12 -0500724EXPORT_SYMBOL_GPL(svcauth_unix_set_client);
J. Bruce Fields3ab4d8b2007-07-17 04:04:46 -0700725
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726static int
Alexey Dobriyand8ed0292006-09-26 22:29:38 -0700727svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728{
729 struct kvec *argv = &rqstp->rq_arg.head[0];
730 struct kvec *resv = &rqstp->rq_res.head[0];
731 struct svc_cred *cred = &rqstp->rq_cred;
732
733 cred->cr_group_info = NULL;
J. Bruce Fields03a4e1f2012-05-14 19:55:22 -0400734 cred->cr_principal = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 rqstp->rq_client = NULL;
736
737 if (argv->iov_len < 3*4)
738 return SVC_GARBAGE;
739
YOSHIFUJI Hideakicca51722007-02-09 15:38:13 -0800740 if (svc_getu32(argv) != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 dprintk("svc: bad null cred\n");
742 *authp = rpc_autherr_badcred;
743 return SVC_DENIED;
744 }
Alexey Dobriyan76994312006-09-26 22:28:46 -0700745 if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 dprintk("svc: bad null verf\n");
747 *authp = rpc_autherr_badverf;
748 return SVC_DENIED;
749 }
750
751 /* Signal that mapping to nobody uid/gid is required */
Eric W. Biedermanbf37f792013-02-01 15:55:38 -0800752 cred->cr_uid = INVALID_UID;
753 cred->cr_gid = INVALID_GID;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 cred->cr_group_info = groups_alloc(0);
755 if (cred->cr_group_info == NULL)
NeilBrown1ebede82010-08-12 17:04:07 +1000756 return SVC_CLOSE; /* kmalloc failure - client must retry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757
758 /* Put NULL verifier */
Alexey Dobriyan76994312006-09-26 22:28:46 -0700759 svc_putnl(resv, RPC_AUTH_NULL);
760 svc_putnl(resv, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761
J. Bruce Fieldsd5497fc2012-05-14 22:06:49 -0400762 rqstp->rq_cred.cr_flavor = RPC_AUTH_NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 return SVC_OK;
764}
765
766static int
767svcauth_null_release(struct svc_rqst *rqstp)
768{
769 if (rqstp->rq_client)
770 auth_domain_put(rqstp->rq_client);
771 rqstp->rq_client = NULL;
772 if (rqstp->rq_cred.cr_group_info)
773 put_group_info(rqstp->rq_cred.cr_group_info);
774 rqstp->rq_cred.cr_group_info = NULL;
775
776 return 0; /* don't drop */
777}
778
779
780struct auth_ops svcauth_null = {
781 .name = "null",
782 .owner = THIS_MODULE,
783 .flavour = RPC_AUTH_NULL,
784 .accept = svcauth_null_accept,
785 .release = svcauth_null_release,
786 .set_client = svcauth_unix_set_client,
787};
788
789
790static int
Alexey Dobriyand8ed0292006-09-26 22:29:38 -0700791svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792{
793 struct kvec *argv = &rqstp->rq_arg.head[0];
794 struct kvec *resv = &rqstp->rq_res.head[0];
795 struct svc_cred *cred = &rqstp->rq_cred;
796 u32 slen, i;
797 int len = argv->iov_len;
798
799 cred->cr_group_info = NULL;
J. Bruce Fields03a4e1f2012-05-14 19:55:22 -0400800 cred->cr_principal = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 rqstp->rq_client = NULL;
802
803 if ((len -= 3*4) < 0)
804 return SVC_GARBAGE;
805
806 svc_getu32(argv); /* length */
807 svc_getu32(argv); /* time stamp */
Alexey Dobriyan76994312006-09-26 22:28:46 -0700808 slen = XDR_QUADLEN(svc_getnl(argv)); /* machname length */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 if (slen > 64 || (len -= (slen + 3)*4) < 0)
810 goto badcred;
Alexey Dobriyand8ed0292006-09-26 22:29:38 -0700811 argv->iov_base = (void*)((__be32*)argv->iov_base + slen); /* skip machname */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 argv->iov_len -= slen*4;
813
Eric W. Biedermanf025adf2013-02-02 03:03:04 -0800814 cred->cr_uid = make_kuid(&init_user_ns, svc_getnl(argv)); /* uid */
815 cred->cr_gid = make_kgid(&init_user_ns, svc_getnl(argv)); /* gid */
816 if (!uid_valid(cred->cr_uid) || !gid_valid(cred->cr_gid))
817 goto badcred;
Alexey Dobriyan76994312006-09-26 22:28:46 -0700818 slen = svc_getnl(argv); /* gids length */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819 if (slen > 16 || (len -= (slen + 2)*4) < 0)
820 goto badcred;
J. Bruce Fieldsdc83d6e2009-10-20 18:51:34 -0400821 cred->cr_group_info = groups_alloc(slen);
822 if (cred->cr_group_info == NULL)
NeilBrown1ebede82010-08-12 17:04:07 +1000823 return SVC_CLOSE;
Eric W. Biedermanae2975b2011-11-14 15:56:38 -0800824 for (i = 0; i < slen; i++) {
825 kgid_t kgid = make_kgid(&init_user_ns, svc_getnl(argv));
826 if (!gid_valid(kgid))
827 goto badcred;
828 GROUP_AT(cred->cr_group_info, i) = kgid;
829 }
Alexey Dobriyan76994312006-09-26 22:28:46 -0700830 if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831 *authp = rpc_autherr_badverf;
832 return SVC_DENIED;
833 }
834
835 /* Put NULL verifier */
Alexey Dobriyan76994312006-09-26 22:28:46 -0700836 svc_putnl(resv, RPC_AUTH_NULL);
837 svc_putnl(resv, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838
J. Bruce Fieldsd5497fc2012-05-14 22:06:49 -0400839 rqstp->rq_cred.cr_flavor = RPC_AUTH_UNIX;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 return SVC_OK;
841
842badcred:
843 *authp = rpc_autherr_badcred;
844 return SVC_DENIED;
845}
846
847static int
848svcauth_unix_release(struct svc_rqst *rqstp)
849{
850 /* Verifier (such as it is) is already in place.
851 */
852 if (rqstp->rq_client)
853 auth_domain_put(rqstp->rq_client);
854 rqstp->rq_client = NULL;
855 if (rqstp->rq_cred.cr_group_info)
856 put_group_info(rqstp->rq_cred.cr_group_info);
857 rqstp->rq_cred.cr_group_info = NULL;
858
859 return 0;
860}
861
862
863struct auth_ops svcauth_unix = {
864 .name = "unix",
865 .owner = THIS_MODULE,
866 .flavour = RPC_AUTH_UNIX,
867 .accept = svcauth_unix_accept,
868 .release = svcauth_unix_release,
869 .domain_release = svcauth_unix_domain_release,
870 .set_client = svcauth_unix_set_client,
871};
872
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400873static struct cache_detail ip_map_cache_template = {
874 .owner = THIS_MODULE,
875 .hash_size = IP_HASHMAX,
876 .name = "auth.unix.ip",
877 .cache_put = ip_map_put,
Stanislav Kinsbursky73fb8472013-02-04 14:02:45 +0300878 .cache_request = ip_map_request,
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400879 .cache_parse = ip_map_parse,
880 .cache_show = ip_map_show,
881 .match = ip_map_match,
882 .init = ip_map_init,
883 .update = update,
884 .alloc = ip_map_alloc,
885};
886
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400887int ip_map_cache_create(struct net *net)
888{
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400889 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400890 struct cache_detail *cd;
891 int err;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400892
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400893 cd = cache_create_net(&ip_map_cache_template, net);
894 if (IS_ERR(cd))
895 return PTR_ERR(cd);
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400896 err = cache_register_net(cd, net);
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400897 if (err) {
898 cache_destroy_net(cd, net);
899 return err;
900 }
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400901 sn->ip_map_cache = cd;
902 return 0;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400903}
904
905void ip_map_cache_destroy(struct net *net)
906{
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400907 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
908 struct cache_detail *cd = sn->ip_map_cache;
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400909
Stanislav Kinsburskyd05cc10402012-01-19 21:42:45 +0400910 sn->ip_map_cache = NULL;
911 cache_purge(cd);
912 cache_unregister_net(cd, net);
913 cache_destroy_net(cd, net);
Pavel Emelyanov90d51b02010-09-27 14:02:29 +0400914}