1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 /* 2 /*
3 * NFS exporting and validation. 3 * NFS exporting and validation.
4 * 4 *
5 * We maintain a list of clients, each of whic 5 * We maintain a list of clients, each of which has a list of
6 * exports. To export an fs to a given client, 6 * exports. To export an fs to a given client, you first have
7 * to create the client entry with NFSCTL_ADDC 7 * to create the client entry with NFSCTL_ADDCLIENT, which
8 * creates a client control block and adds it 8 * creates a client control block and adds it to the hash
9 * table. Then, you call NFSCTL_EXPORT for eac 9 * table. Then, you call NFSCTL_EXPORT for each fs.
10 * 10 *
11 * 11 *
12 * Copyright (C) 1995, 1996 Olaf Kirch, <okir@ 12 * Copyright (C) 1995, 1996 Olaf Kirch, <okir@monad.swb.de>
13 */ 13 */
14 14
15 #include <linux/slab.h> 15 #include <linux/slab.h>
16 #include <linux/namei.h> 16 #include <linux/namei.h>
17 #include <linux/module.h> 17 #include <linux/module.h>
18 #include <linux/exportfs.h> 18 #include <linux/exportfs.h>
19 #include <linux/sunrpc/svc_xprt.h> 19 #include <linux/sunrpc/svc_xprt.h>
20 20
21 #include "nfsd.h" 21 #include "nfsd.h"
22 #include "nfsfh.h" 22 #include "nfsfh.h"
23 #include "netns.h" 23 #include "netns.h"
24 #include "pnfs.h" 24 #include "pnfs.h"
25 #include "filecache.h" 25 #include "filecache.h"
26 #include "trace.h" 26 #include "trace.h"
27 27
28 #define NFSDDBG_FACILITY NFSDDBG_EXPORT 28 #define NFSDDBG_FACILITY NFSDDBG_EXPORT
29 29
30 /* 30 /*
31 * We have two caches. 31 * We have two caches.
32 * One maps client+vfsmnt+dentry to export opt 32 * One maps client+vfsmnt+dentry to export options - the export map
33 * The other maps client+filehandle-fragment t 33 * The other maps client+filehandle-fragment to export options. - the expkey map
34 * 34 *
35 * The export options are actually stored in t 35 * The export options are actually stored in the first map, and the
36 * second map contains a reference to the entr 36 * second map contains a reference to the entry in the first map.
37 */ 37 */
38 38
39 #define EXPKEY_HASHBITS 8 39 #define EXPKEY_HASHBITS 8
40 #define EXPKEY_HASHMAX (1 << EXPKEY_H 40 #define EXPKEY_HASHMAX (1 << EXPKEY_HASHBITS)
41 #define EXPKEY_HASHMASK (EXPKEY_HASHMA 41 #define EXPKEY_HASHMASK (EXPKEY_HASHMAX -1)
42 42
43 static void expkey_put(struct kref *ref) 43 static void expkey_put(struct kref *ref)
44 { 44 {
45 struct svc_expkey *key = container_of( 45 struct svc_expkey *key = container_of(ref, struct svc_expkey, h.ref);
46 46
47 if (test_bit(CACHE_VALID, &key->h.flag 47 if (test_bit(CACHE_VALID, &key->h.flags) &&
48 !test_bit(CACHE_NEGATIVE, &key->h. 48 !test_bit(CACHE_NEGATIVE, &key->h.flags))
49 path_put(&key->ek_path); 49 path_put(&key->ek_path);
50 auth_domain_put(key->ek_client); 50 auth_domain_put(key->ek_client);
51 kfree_rcu(key, ek_rcu); 51 kfree_rcu(key, ek_rcu);
52 } 52 }
53 53
54 static int expkey_upcall(struct cache_detail * 54 static int expkey_upcall(struct cache_detail *cd, struct cache_head *h)
55 { 55 {
56 return sunrpc_cache_pipe_upcall(cd, h) 56 return sunrpc_cache_pipe_upcall(cd, h);
57 } 57 }
58 58
59 static void expkey_request(struct cache_detail 59 static void expkey_request(struct cache_detail *cd,
60 struct cache_head * 60 struct cache_head *h,
61 char **bpp, int *bl 61 char **bpp, int *blen)
62 { 62 {
63 /* client fsidtype \xfsid */ 63 /* client fsidtype \xfsid */
64 struct svc_expkey *ek = container_of(h 64 struct svc_expkey *ek = container_of(h, struct svc_expkey, h);
65 char type[5]; 65 char type[5];
66 66
67 qword_add(bpp, blen, ek->ek_client->na 67 qword_add(bpp, blen, ek->ek_client->name);
68 snprintf(type, 5, "%d", ek->ek_fsidtyp 68 snprintf(type, 5, "%d", ek->ek_fsidtype);
69 qword_add(bpp, blen, type); 69 qword_add(bpp, blen, type);
70 qword_addhex(bpp, blen, (char*)ek->ek_ 70 qword_addhex(bpp, blen, (char*)ek->ek_fsid, key_len(ek->ek_fsidtype));
71 (*bpp)[-1] = '\n'; 71 (*bpp)[-1] = '\n';
72 } 72 }
73 73
74 static struct svc_expkey *svc_expkey_update(st 74 static struct svc_expkey *svc_expkey_update(struct cache_detail *cd, struct svc_expkey *new,
75 st 75 struct svc_expkey *old);
76 static struct svc_expkey *svc_expkey_lookup(st 76 static struct svc_expkey *svc_expkey_lookup(struct cache_detail *cd, struct svc_expkey *);
77 77
78 static int expkey_parse(struct cache_detail *c 78 static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
79 { 79 {
80 /* client fsidtype fsid expiry [path] 80 /* client fsidtype fsid expiry [path] */
81 char *buf; 81 char *buf;
82 int len; 82 int len;
83 struct auth_domain *dom = NULL; 83 struct auth_domain *dom = NULL;
84 int err; 84 int err;
85 int fsidtype; 85 int fsidtype;
86 char *ep; 86 char *ep;
87 struct svc_expkey key; 87 struct svc_expkey key;
88 struct svc_expkey *ek = NULL; 88 struct svc_expkey *ek = NULL;
89 89
90 if (mesg[mlen - 1] != '\n') 90 if (mesg[mlen - 1] != '\n')
91 return -EINVAL; 91 return -EINVAL;
92 mesg[mlen-1] = 0; 92 mesg[mlen-1] = 0;
93 93
94 buf = kmalloc(PAGE_SIZE, GFP_KERNEL); 94 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
95 err = -ENOMEM; 95 err = -ENOMEM;
96 if (!buf) 96 if (!buf)
97 goto out; 97 goto out;
98 98
99 err = -EINVAL; 99 err = -EINVAL;
100 if (qword_get(&mesg, buf, PAGE_SIZE) < 100 if (qword_get(&mesg, buf, PAGE_SIZE) <= 0)
101 goto out; 101 goto out;
102 102
103 err = -ENOENT; 103 err = -ENOENT;
104 dom = auth_domain_find(buf); 104 dom = auth_domain_find(buf);
105 if (!dom) 105 if (!dom)
106 goto out; 106 goto out;
107 dprintk("found domain %s\n", buf); 107 dprintk("found domain %s\n", buf);
108 108
109 err = -EINVAL; 109 err = -EINVAL;
110 if (qword_get(&mesg, buf, PAGE_SIZE) < 110 if (qword_get(&mesg, buf, PAGE_SIZE) <= 0)
111 goto out; 111 goto out;
112 fsidtype = simple_strtoul(buf, &ep, 10 112 fsidtype = simple_strtoul(buf, &ep, 10);
113 if (*ep) 113 if (*ep)
114 goto out; 114 goto out;
115 dprintk("found fsidtype %d\n", fsidtyp 115 dprintk("found fsidtype %d\n", fsidtype);
116 if (key_len(fsidtype)==0) /* invalid t 116 if (key_len(fsidtype)==0) /* invalid type */
117 goto out; 117 goto out;
118 if ((len=qword_get(&mesg, buf, PAGE_SI 118 if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
119 goto out; 119 goto out;
120 dprintk("found fsid length %d\n", len) 120 dprintk("found fsid length %d\n", len);
121 if (len != key_len(fsidtype)) 121 if (len != key_len(fsidtype))
122 goto out; 122 goto out;
123 123
124 /* OK, we seem to have a valid key */ 124 /* OK, we seem to have a valid key */
125 key.h.flags = 0; 125 key.h.flags = 0;
126 err = get_expiry(&mesg, &key.h.expiry_ 126 err = get_expiry(&mesg, &key.h.expiry_time);
127 if (err) 127 if (err)
128 goto out; 128 goto out;
129 129
130 key.ek_client = dom; 130 key.ek_client = dom;
131 key.ek_fsidtype = fsidtype; 131 key.ek_fsidtype = fsidtype;
132 memcpy(key.ek_fsid, buf, len); 132 memcpy(key.ek_fsid, buf, len);
133 133
134 ek = svc_expkey_lookup(cd, &key); 134 ek = svc_expkey_lookup(cd, &key);
135 err = -ENOMEM; 135 err = -ENOMEM;
136 if (!ek) 136 if (!ek)
137 goto out; 137 goto out;
138 138
139 /* now we want a pathname, or empty me 139 /* now we want a pathname, or empty meaning NEGATIVE */
140 err = -EINVAL; 140 err = -EINVAL;
141 len = qword_get(&mesg, buf, PAGE_SIZE) 141 len = qword_get(&mesg, buf, PAGE_SIZE);
142 if (len < 0) 142 if (len < 0)
143 goto out; 143 goto out;
144 dprintk("Path seems to be <%s>\n", buf 144 dprintk("Path seems to be <%s>\n", buf);
145 err = 0; 145 err = 0;
146 if (len == 0) { 146 if (len == 0) {
147 set_bit(CACHE_NEGATIVE, &key.h 147 set_bit(CACHE_NEGATIVE, &key.h.flags);
148 ek = svc_expkey_update(cd, &ke 148 ek = svc_expkey_update(cd, &key, ek);
149 if (ek) 149 if (ek)
150 trace_nfsd_expkey_upda 150 trace_nfsd_expkey_update(ek, NULL);
151 else 151 else
152 err = -ENOMEM; 152 err = -ENOMEM;
153 } else { 153 } else {
154 err = kern_path(buf, 0, &key.e 154 err = kern_path(buf, 0, &key.ek_path);
155 if (err) 155 if (err)
156 goto out; 156 goto out;
157 157
158 dprintk("Found the path %s\n", 158 dprintk("Found the path %s\n", buf);
159 159
160 ek = svc_expkey_update(cd, &ke 160 ek = svc_expkey_update(cd, &key, ek);
161 if (ek) 161 if (ek)
162 trace_nfsd_expkey_upda 162 trace_nfsd_expkey_update(ek, buf);
163 else 163 else
164 err = -ENOMEM; 164 err = -ENOMEM;
165 path_put(&key.ek_path); 165 path_put(&key.ek_path);
166 } 166 }
167 cache_flush(); 167 cache_flush();
168 out: 168 out:
169 if (ek) 169 if (ek)
170 cache_put(&ek->h, cd); 170 cache_put(&ek->h, cd);
171 if (dom) 171 if (dom)
172 auth_domain_put(dom); 172 auth_domain_put(dom);
173 kfree(buf); 173 kfree(buf);
174 return err; 174 return err;
175 } 175 }
176 176
177 static int expkey_show(struct seq_file *m, 177 static int expkey_show(struct seq_file *m,
178 struct cache_detail *cd 178 struct cache_detail *cd,
179 struct cache_head *h) 179 struct cache_head *h)
180 { 180 {
181 struct svc_expkey *ek ; 181 struct svc_expkey *ek ;
182 int i; 182 int i;
183 183
184 if (h ==NULL) { 184 if (h ==NULL) {
185 seq_puts(m, "#domain fsidtype 185 seq_puts(m, "#domain fsidtype fsid [path]\n");
186 return 0; 186 return 0;
187 } 187 }
188 ek = container_of(h, struct svc_expkey 188 ek = container_of(h, struct svc_expkey, h);
189 seq_printf(m, "%s %d 0x", ek->ek_clien 189 seq_printf(m, "%s %d 0x", ek->ek_client->name,
190 ek->ek_fsidtype); 190 ek->ek_fsidtype);
191 for (i=0; i < key_len(ek->ek_fsidtype) 191 for (i=0; i < key_len(ek->ek_fsidtype)/4; i++)
192 seq_printf(m, "%08x", ek->ek_f 192 seq_printf(m, "%08x", ek->ek_fsid[i]);
193 if (test_bit(CACHE_VALID, &h->flags) & 193 if (test_bit(CACHE_VALID, &h->flags) &&
194 !test_bit(CACHE_NEGATIVE, &h->flag 194 !test_bit(CACHE_NEGATIVE, &h->flags)) {
195 seq_printf(m, " "); 195 seq_printf(m, " ");
196 seq_path(m, &ek->ek_path, "\\ 196 seq_path(m, &ek->ek_path, "\\ \t\n");
197 } 197 }
198 seq_printf(m, "\n"); 198 seq_printf(m, "\n");
199 return 0; 199 return 0;
200 } 200 }
201 201
202 static inline int expkey_match (struct cache_h 202 static inline int expkey_match (struct cache_head *a, struct cache_head *b)
203 { 203 {
204 struct svc_expkey *orig = container_of 204 struct svc_expkey *orig = container_of(a, struct svc_expkey, h);
205 struct svc_expkey *new = container_of( 205 struct svc_expkey *new = container_of(b, struct svc_expkey, h);
206 206
207 if (orig->ek_fsidtype != new->ek_fsidt 207 if (orig->ek_fsidtype != new->ek_fsidtype ||
208 orig->ek_client != new->ek_client 208 orig->ek_client != new->ek_client ||
209 memcmp(orig->ek_fsid, new->ek_fsid 209 memcmp(orig->ek_fsid, new->ek_fsid, key_len(orig->ek_fsidtype)) != 0)
210 return 0; 210 return 0;
211 return 1; 211 return 1;
212 } 212 }
213 213
214 static inline void expkey_init(struct cache_he 214 static inline void expkey_init(struct cache_head *cnew,
215 struct cach 215 struct cache_head *citem)
216 { 216 {
217 struct svc_expkey *new = container_of( 217 struct svc_expkey *new = container_of(cnew, struct svc_expkey, h);
218 struct svc_expkey *item = container_of 218 struct svc_expkey *item = container_of(citem, struct svc_expkey, h);
219 219
220 kref_get(&item->ek_client->ref); 220 kref_get(&item->ek_client->ref);
221 new->ek_client = item->ek_client; 221 new->ek_client = item->ek_client;
222 new->ek_fsidtype = item->ek_fsidtype; 222 new->ek_fsidtype = item->ek_fsidtype;
223 223
224 memcpy(new->ek_fsid, item->ek_fsid, si 224 memcpy(new->ek_fsid, item->ek_fsid, sizeof(new->ek_fsid));
225 } 225 }
226 226
227 static inline void expkey_update(struct cache_ 227 static inline void expkey_update(struct cache_head *cnew,
228 struct cach 228 struct cache_head *citem)
229 { 229 {
230 struct svc_expkey *new = container_of( 230 struct svc_expkey *new = container_of(cnew, struct svc_expkey, h);
231 struct svc_expkey *item = container_of 231 struct svc_expkey *item = container_of(citem, struct svc_expkey, h);
232 232
233 new->ek_path = item->ek_path; 233 new->ek_path = item->ek_path;
234 path_get(&item->ek_path); 234 path_get(&item->ek_path);
235 } 235 }
236 236
237 static struct cache_head *expkey_alloc(void) 237 static struct cache_head *expkey_alloc(void)
238 { 238 {
239 struct svc_expkey *i = kmalloc(sizeof( 239 struct svc_expkey *i = kmalloc(sizeof(*i), GFP_KERNEL);
240 if (i) 240 if (i)
241 return &i->h; 241 return &i->h;
242 else 242 else
243 return NULL; 243 return NULL;
244 } 244 }
245 245
246 static void expkey_flush(void) 246 static void expkey_flush(void)
247 { 247 {
248 /* 248 /*
249 * Take the nfsd_mutex here to ensure 249 * Take the nfsd_mutex here to ensure that the file cache is not
250 * destroyed while we're in the middle 250 * destroyed while we're in the middle of flushing.
251 */ 251 */
252 mutex_lock(&nfsd_mutex); 252 mutex_lock(&nfsd_mutex);
253 nfsd_file_cache_purge(current->nsproxy 253 nfsd_file_cache_purge(current->nsproxy->net_ns);
254 mutex_unlock(&nfsd_mutex); 254 mutex_unlock(&nfsd_mutex);
255 } 255 }
256 256
257 static const struct cache_detail svc_expkey_ca 257 static const struct cache_detail svc_expkey_cache_template = {
258 .owner = THIS_MODULE, 258 .owner = THIS_MODULE,
259 .hash_size = EXPKEY_HASHMAX, 259 .hash_size = EXPKEY_HASHMAX,
260 .name = "nfsd.fh", 260 .name = "nfsd.fh",
261 .cache_put = expkey_put, 261 .cache_put = expkey_put,
262 .cache_upcall = expkey_upcall, 262 .cache_upcall = expkey_upcall,
263 .cache_request = expkey_request, 263 .cache_request = expkey_request,
264 .cache_parse = expkey_parse, 264 .cache_parse = expkey_parse,
265 .cache_show = expkey_show, 265 .cache_show = expkey_show,
266 .match = expkey_match, 266 .match = expkey_match,
267 .init = expkey_init, 267 .init = expkey_init,
268 .update = expkey_update, 268 .update = expkey_update,
269 .alloc = expkey_alloc, 269 .alloc = expkey_alloc,
270 .flush = expkey_flush, 270 .flush = expkey_flush,
271 }; 271 };
272 272
273 static int 273 static int
274 svc_expkey_hash(struct svc_expkey *item) 274 svc_expkey_hash(struct svc_expkey *item)
275 { 275 {
276 int hash = item->ek_fsidtype; 276 int hash = item->ek_fsidtype;
277 char * cp = (char*)item->ek_fsid; 277 char * cp = (char*)item->ek_fsid;
278 int len = key_len(item->ek_fsidtype); 278 int len = key_len(item->ek_fsidtype);
279 279
280 hash ^= hash_mem(cp, len, EXPKEY_HASHB 280 hash ^= hash_mem(cp, len, EXPKEY_HASHBITS);
281 hash ^= hash_ptr(item->ek_client, EXPK 281 hash ^= hash_ptr(item->ek_client, EXPKEY_HASHBITS);
282 hash &= EXPKEY_HASHMASK; 282 hash &= EXPKEY_HASHMASK;
283 return hash; 283 return hash;
284 } 284 }
285 285
286 static struct svc_expkey * 286 static struct svc_expkey *
287 svc_expkey_lookup(struct cache_detail *cd, str 287 svc_expkey_lookup(struct cache_detail *cd, struct svc_expkey *item)
288 { 288 {
289 struct cache_head *ch; 289 struct cache_head *ch;
290 int hash = svc_expkey_hash(item); 290 int hash = svc_expkey_hash(item);
291 291
292 ch = sunrpc_cache_lookup_rcu(cd, &item 292 ch = sunrpc_cache_lookup_rcu(cd, &item->h, hash);
293 if (ch) 293 if (ch)
294 return container_of(ch, struct 294 return container_of(ch, struct svc_expkey, h);
295 else 295 else
296 return NULL; 296 return NULL;
297 } 297 }
298 298
299 static struct svc_expkey * 299 static struct svc_expkey *
300 svc_expkey_update(struct cache_detail *cd, str 300 svc_expkey_update(struct cache_detail *cd, struct svc_expkey *new,
301 struct svc_expkey *old) 301 struct svc_expkey *old)
302 { 302 {
303 struct cache_head *ch; 303 struct cache_head *ch;
304 int hash = svc_expkey_hash(new); 304 int hash = svc_expkey_hash(new);
305 305
306 ch = sunrpc_cache_update(cd, &new->h, 306 ch = sunrpc_cache_update(cd, &new->h, &old->h, hash);
307 if (ch) 307 if (ch)
308 return container_of(ch, struct 308 return container_of(ch, struct svc_expkey, h);
309 else 309 else
310 return NULL; 310 return NULL;
311 } 311 }
312 312
313 313
314 #define EXPORT_HASHBITS 8 314 #define EXPORT_HASHBITS 8
315 #define EXPORT_HASHMAX (1<< EXPORT_HA 315 #define EXPORT_HASHMAX (1<< EXPORT_HASHBITS)
316 316
317 static void nfsd4_fslocs_free(struct nfsd4_fs_ 317 static void nfsd4_fslocs_free(struct nfsd4_fs_locations *fsloc)
318 { 318 {
319 struct nfsd4_fs_location *locations = 319 struct nfsd4_fs_location *locations = fsloc->locations;
320 int i; 320 int i;
321 321
322 if (!locations) 322 if (!locations)
323 return; 323 return;
324 324
325 for (i = 0; i < fsloc->locations_count 325 for (i = 0; i < fsloc->locations_count; i++) {
326 kfree(locations[i].path); 326 kfree(locations[i].path);
327 kfree(locations[i].hosts); 327 kfree(locations[i].hosts);
328 } 328 }
329 329
330 kfree(locations); 330 kfree(locations);
331 fsloc->locations = NULL; 331 fsloc->locations = NULL;
332 } 332 }
333 333
334 static int export_stats_init(struct export_sta 334 static int export_stats_init(struct export_stats *stats)
335 { 335 {
336 stats->start_time = ktime_get_seconds( 336 stats->start_time = ktime_get_seconds();
337 return percpu_counter_init_many(stats- !! 337 return nfsd_percpu_counters_init(stats->counter, EXP_STATS_COUNTERS_NUM);
338 EXP_ST <<
339 } 338 }
340 339
341 static void export_stats_reset(struct export_s 340 static void export_stats_reset(struct export_stats *stats)
342 { 341 {
343 if (stats) { !! 342 if (stats)
344 int i; !! 343 nfsd_percpu_counters_reset(stats->counter,
345 !! 344 EXP_STATS_COUNTERS_NUM);
346 for (i = 0; i < EXP_STATS_COUN <<
347 percpu_counter_set(&st <<
348 } <<
349 } 345 }
350 346
351 static void export_stats_destroy(struct export 347 static void export_stats_destroy(struct export_stats *stats)
352 { 348 {
353 if (stats) 349 if (stats)
354 percpu_counter_destroy_many(st !! 350 nfsd_percpu_counters_destroy(stats->counter,
355 EX !! 351 EXP_STATS_COUNTERS_NUM);
356 } 352 }
357 353
358 static void svc_export_put(struct kref *ref) 354 static void svc_export_put(struct kref *ref)
359 { 355 {
360 struct svc_export *exp = container_of( 356 struct svc_export *exp = container_of(ref, struct svc_export, h.ref);
361 path_put(&exp->ex_path); 357 path_put(&exp->ex_path);
362 auth_domain_put(exp->ex_client); 358 auth_domain_put(exp->ex_client);
363 nfsd4_fslocs_free(&exp->ex_fslocs); 359 nfsd4_fslocs_free(&exp->ex_fslocs);
364 export_stats_destroy(exp->ex_stats); 360 export_stats_destroy(exp->ex_stats);
365 kfree(exp->ex_stats); 361 kfree(exp->ex_stats);
366 kfree(exp->ex_uuid); 362 kfree(exp->ex_uuid);
367 kfree_rcu(exp, ex_rcu); 363 kfree_rcu(exp, ex_rcu);
368 } 364 }
369 365
370 static int svc_export_upcall(struct cache_deta 366 static int svc_export_upcall(struct cache_detail *cd, struct cache_head *h)
371 { 367 {
372 return sunrpc_cache_pipe_upcall(cd, h) 368 return sunrpc_cache_pipe_upcall(cd, h);
373 } 369 }
374 370
375 static void svc_export_request(struct cache_de 371 static void svc_export_request(struct cache_detail *cd,
376 struct cache_he 372 struct cache_head *h,
377 char **bpp, int 373 char **bpp, int *blen)
378 { 374 {
379 /* client path */ 375 /* client path */
380 struct svc_export *exp = container_of( 376 struct svc_export *exp = container_of(h, struct svc_export, h);
381 char *pth; 377 char *pth;
382 378
383 qword_add(bpp, blen, exp->ex_client->n 379 qword_add(bpp, blen, exp->ex_client->name);
384 pth = d_path(&exp->ex_path, *bpp, *ble 380 pth = d_path(&exp->ex_path, *bpp, *blen);
385 if (IS_ERR(pth)) { 381 if (IS_ERR(pth)) {
386 /* is this correct? */ 382 /* is this correct? */
387 (*bpp)[0] = '\n'; 383 (*bpp)[0] = '\n';
388 return; 384 return;
389 } 385 }
390 qword_add(bpp, blen, pth); 386 qword_add(bpp, blen, pth);
391 (*bpp)[-1] = '\n'; 387 (*bpp)[-1] = '\n';
392 } 388 }
393 389
394 static struct svc_export *svc_export_update(st 390 static struct svc_export *svc_export_update(struct svc_export *new,
395 st 391 struct svc_export *old);
396 static struct svc_export *svc_export_lookup(st 392 static struct svc_export *svc_export_lookup(struct svc_export *);
397 393
398 static int check_export(struct path *path, int 394 static int check_export(struct path *path, int *flags, unsigned char *uuid)
399 { 395 {
400 struct inode *inode = d_inode(path->de 396 struct inode *inode = d_inode(path->dentry);
401 397
402 /* 398 /*
403 * We currently export only dirs, regu 399 * We currently export only dirs, regular files, and (for v4
404 * pseudoroot) symlinks. 400 * pseudoroot) symlinks.
405 */ 401 */
406 if (!S_ISDIR(inode->i_mode) && 402 if (!S_ISDIR(inode->i_mode) &&
407 !S_ISLNK(inode->i_mode) && 403 !S_ISLNK(inode->i_mode) &&
408 !S_ISREG(inode->i_mode)) 404 !S_ISREG(inode->i_mode))
409 return -ENOTDIR; 405 return -ENOTDIR;
410 406
411 /* 407 /*
412 * Mountd should never pass down a wri 408 * Mountd should never pass down a writeable V4ROOT export, but,
413 * just to make sure: 409 * just to make sure:
414 */ 410 */
415 if (*flags & NFSEXP_V4ROOT) 411 if (*flags & NFSEXP_V4ROOT)
416 *flags |= NFSEXP_READONLY; 412 *flags |= NFSEXP_READONLY;
417 413
418 /* There are two requirements on a fil 414 /* There are two requirements on a filesystem to be exportable.
419 * 1: We must be able to identify the 415 * 1: We must be able to identify the filesystem from a number.
420 * either a device number (so FS 416 * either a device number (so FS_REQUIRES_DEV needed)
421 * or an FSID number (so NFSEXP_ 417 * or an FSID number (so NFSEXP_FSID or ->uuid is needed).
422 * 2: We must be able to find an inod 418 * 2: We must be able to find an inode from a filehandle.
423 * This means that s_export_op m 419 * This means that s_export_op must be set.
424 * 3: We must not currently be on an i 420 * 3: We must not currently be on an idmapped mount.
425 */ 421 */
426 if (!(inode->i_sb->s_type->fs_flags & 422 if (!(inode->i_sb->s_type->fs_flags & FS_REQUIRES_DEV) &&
427 !(*flags & NFSEXP_FSID) && 423 !(*flags & NFSEXP_FSID) &&
428 uuid == NULL) { 424 uuid == NULL) {
429 dprintk("exp_export: export of 425 dprintk("exp_export: export of non-dev fs without fsid\n");
430 return -EINVAL; 426 return -EINVAL;
431 } 427 }
432 428
433 if (!exportfs_can_decode_fh(inode->i_s 429 if (!exportfs_can_decode_fh(inode->i_sb->s_export_op)) {
434 dprintk("exp_export: export of 430 dprintk("exp_export: export of invalid fs type.\n");
435 return -EINVAL; 431 return -EINVAL;
436 } 432 }
437 433
438 if (is_idmapped_mnt(path->mnt)) { 434 if (is_idmapped_mnt(path->mnt)) {
439 dprintk("exp_export: export of 435 dprintk("exp_export: export of idmapped mounts not yet supported.\n");
440 return -EINVAL; 436 return -EINVAL;
441 } 437 }
442 438
443 if (inode->i_sb->s_export_op->flags & 439 if (inode->i_sb->s_export_op->flags & EXPORT_OP_NOSUBTREECHK &&
444 !(*flags & NFSEXP_NOSUBTREECHECK)) 440 !(*flags & NFSEXP_NOSUBTREECHECK)) {
445 dprintk("%s: %s does not suppo 441 dprintk("%s: %s does not support subtree checking!\n",
446 __func__, inode->i_sb- 442 __func__, inode->i_sb->s_type->name);
447 return -EINVAL; 443 return -EINVAL;
448 } 444 }
449 return 0; 445 return 0;
450 } 446 }
451 447
452 #ifdef CONFIG_NFSD_V4 448 #ifdef CONFIG_NFSD_V4
453 449
454 static int 450 static int
455 fsloc_parse(char **mesg, char *buf, struct nfs 451 fsloc_parse(char **mesg, char *buf, struct nfsd4_fs_locations *fsloc)
456 { 452 {
457 int len; 453 int len;
458 int migrated, i, err; 454 int migrated, i, err;
459 455
460 /* more than one fsloc */ 456 /* more than one fsloc */
461 if (fsloc->locations) 457 if (fsloc->locations)
462 return -EINVAL; 458 return -EINVAL;
463 459
464 /* listsize */ 460 /* listsize */
465 err = get_uint(mesg, &fsloc->locations 461 err = get_uint(mesg, &fsloc->locations_count);
466 if (err) 462 if (err)
467 return err; 463 return err;
468 if (fsloc->locations_count > MAX_FS_LO 464 if (fsloc->locations_count > MAX_FS_LOCATIONS)
469 return -EINVAL; 465 return -EINVAL;
470 if (fsloc->locations_count == 0) 466 if (fsloc->locations_count == 0)
471 return 0; 467 return 0;
472 468
473 fsloc->locations = kcalloc(fsloc->loca 469 fsloc->locations = kcalloc(fsloc->locations_count,
474 sizeof(stru 470 sizeof(struct nfsd4_fs_location),
475 GFP_KERNEL) 471 GFP_KERNEL);
476 if (!fsloc->locations) 472 if (!fsloc->locations)
477 return -ENOMEM; 473 return -ENOMEM;
478 for (i=0; i < fsloc->locations_count; 474 for (i=0; i < fsloc->locations_count; i++) {
479 /* colon separated host list * 475 /* colon separated host list */
480 err = -EINVAL; 476 err = -EINVAL;
481 len = qword_get(mesg, buf, PAG 477 len = qword_get(mesg, buf, PAGE_SIZE);
482 if (len <= 0) 478 if (len <= 0)
483 goto out_free_all; 479 goto out_free_all;
484 err = -ENOMEM; 480 err = -ENOMEM;
485 fsloc->locations[i].hosts = ks 481 fsloc->locations[i].hosts = kstrdup(buf, GFP_KERNEL);
486 if (!fsloc->locations[i].hosts 482 if (!fsloc->locations[i].hosts)
487 goto out_free_all; 483 goto out_free_all;
488 err = -EINVAL; 484 err = -EINVAL;
489 /* slash separated path compon 485 /* slash separated path component list */
490 len = qword_get(mesg, buf, PAG 486 len = qword_get(mesg, buf, PAGE_SIZE);
491 if (len <= 0) 487 if (len <= 0)
492 goto out_free_all; 488 goto out_free_all;
493 err = -ENOMEM; 489 err = -ENOMEM;
494 fsloc->locations[i].path = kst 490 fsloc->locations[i].path = kstrdup(buf, GFP_KERNEL);
495 if (!fsloc->locations[i].path) 491 if (!fsloc->locations[i].path)
496 goto out_free_all; 492 goto out_free_all;
497 } 493 }
498 /* migrated */ 494 /* migrated */
499 err = get_int(mesg, &migrated); 495 err = get_int(mesg, &migrated);
500 if (err) 496 if (err)
501 goto out_free_all; 497 goto out_free_all;
502 err = -EINVAL; 498 err = -EINVAL;
503 if (migrated < 0 || migrated > 1) 499 if (migrated < 0 || migrated > 1)
504 goto out_free_all; 500 goto out_free_all;
505 fsloc->migrated = migrated; 501 fsloc->migrated = migrated;
506 return 0; 502 return 0;
507 out_free_all: 503 out_free_all:
508 nfsd4_fslocs_free(fsloc); 504 nfsd4_fslocs_free(fsloc);
509 return err; 505 return err;
510 } 506 }
511 507
512 static int secinfo_parse(char **mesg, char *bu 508 static int secinfo_parse(char **mesg, char *buf, struct svc_export *exp)
513 { 509 {
514 struct exp_flavor_info *f; 510 struct exp_flavor_info *f;
515 u32 listsize; 511 u32 listsize;
516 int err; 512 int err;
517 513
518 /* more than one secinfo */ 514 /* more than one secinfo */
519 if (exp->ex_nflavors) 515 if (exp->ex_nflavors)
520 return -EINVAL; 516 return -EINVAL;
521 517
522 err = get_uint(mesg, &listsize); 518 err = get_uint(mesg, &listsize);
523 if (err) 519 if (err)
524 return err; 520 return err;
525 if (listsize > MAX_SECINFO_LIST) 521 if (listsize > MAX_SECINFO_LIST)
526 return -EINVAL; 522 return -EINVAL;
527 523
528 for (f = exp->ex_flavors; f < exp->ex_ 524 for (f = exp->ex_flavors; f < exp->ex_flavors + listsize; f++) {
529 err = get_uint(mesg, &f->pseud 525 err = get_uint(mesg, &f->pseudoflavor);
530 if (err) 526 if (err)
531 return err; 527 return err;
532 /* 528 /*
533 * XXX: It would be nice to al 529 * XXX: It would be nice to also check whether this
534 * pseudoflavor is supported, 530 * pseudoflavor is supported, so we can discover the
535 * problem at export time inst 531 * problem at export time instead of when a client fails
536 * to authenticate. 532 * to authenticate.
537 */ 533 */
538 err = get_uint(mesg, &f->flags 534 err = get_uint(mesg, &f->flags);
539 if (err) 535 if (err)
540 return err; 536 return err;
541 /* Only some flags are allowed 537 /* Only some flags are allowed to differ between flavors: */
542 if (~NFSEXP_SECINFO_FLAGS & (f 538 if (~NFSEXP_SECINFO_FLAGS & (f->flags ^ exp->ex_flags))
543 return -EINVAL; 539 return -EINVAL;
544 } 540 }
545 exp->ex_nflavors = listsize; 541 exp->ex_nflavors = listsize;
546 return 0; 542 return 0;
547 } 543 }
548 544
549 #else /* CONFIG_NFSD_V4 */ 545 #else /* CONFIG_NFSD_V4 */
550 static inline int 546 static inline int
551 fsloc_parse(char **mesg, char *buf, struct nfs 547 fsloc_parse(char **mesg, char *buf, struct nfsd4_fs_locations *fsloc){return 0;}
552 static inline int 548 static inline int
553 secinfo_parse(char **mesg, char *buf, struct s 549 secinfo_parse(char **mesg, char *buf, struct svc_export *exp) { return 0; }
554 #endif 550 #endif
555 551
556 static int xprtsec_parse(char **mesg, char *bu 552 static int xprtsec_parse(char **mesg, char *buf, struct svc_export *exp)
557 { 553 {
558 unsigned int i, mode, listsize; 554 unsigned int i, mode, listsize;
559 int err; 555 int err;
560 556
561 err = get_uint(mesg, &listsize); 557 err = get_uint(mesg, &listsize);
562 if (err) 558 if (err)
563 return err; 559 return err;
564 if (listsize > NFSEXP_XPRTSEC_NUM) 560 if (listsize > NFSEXP_XPRTSEC_NUM)
565 return -EINVAL; 561 return -EINVAL;
566 562
567 exp->ex_xprtsec_modes = 0; 563 exp->ex_xprtsec_modes = 0;
568 for (i = 0; i < listsize; i++) { 564 for (i = 0; i < listsize; i++) {
569 err = get_uint(mesg, &mode); 565 err = get_uint(mesg, &mode);
570 if (err) 566 if (err)
571 return err; 567 return err;
572 if (mode > NFSEXP_XPRTSEC_MTLS 568 if (mode > NFSEXP_XPRTSEC_MTLS)
573 return -EINVAL; 569 return -EINVAL;
574 exp->ex_xprtsec_modes |= mode; 570 exp->ex_xprtsec_modes |= mode;
575 } 571 }
576 return 0; 572 return 0;
577 } 573 }
578 574
579 static inline int 575 static inline int
580 nfsd_uuid_parse(char **mesg, char *buf, unsign 576 nfsd_uuid_parse(char **mesg, char *buf, unsigned char **puuid)
581 { 577 {
582 int len; 578 int len;
583 579
584 /* more than one uuid */ 580 /* more than one uuid */
585 if (*puuid) 581 if (*puuid)
586 return -EINVAL; 582 return -EINVAL;
587 583
588 /* expect a 16 byte uuid encoded as \x 584 /* expect a 16 byte uuid encoded as \xXXXX... */
589 len = qword_get(mesg, buf, PAGE_SIZE); 585 len = qword_get(mesg, buf, PAGE_SIZE);
590 if (len != EX_UUID_LEN) 586 if (len != EX_UUID_LEN)
591 return -EINVAL; 587 return -EINVAL;
592 588
593 *puuid = kmemdup(buf, EX_UUID_LEN, GFP 589 *puuid = kmemdup(buf, EX_UUID_LEN, GFP_KERNEL);
594 if (*puuid == NULL) 590 if (*puuid == NULL)
595 return -ENOMEM; 591 return -ENOMEM;
596 592
597 return 0; 593 return 0;
598 } 594 }
599 595
600 static int svc_export_parse(struct cache_detai 596 static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
601 { 597 {
602 /* client path expiry [flags anonuid a 598 /* client path expiry [flags anonuid anongid fsid] */
603 char *buf; 599 char *buf;
604 int err; 600 int err;
605 struct auth_domain *dom = NULL; 601 struct auth_domain *dom = NULL;
606 struct svc_export exp = {}, *expp; 602 struct svc_export exp = {}, *expp;
607 int an_int; 603 int an_int;
608 604
609 if (mesg[mlen-1] != '\n') 605 if (mesg[mlen-1] != '\n')
610 return -EINVAL; 606 return -EINVAL;
611 mesg[mlen-1] = 0; 607 mesg[mlen-1] = 0;
612 608
613 buf = kmalloc(PAGE_SIZE, GFP_KERNEL); 609 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
614 if (!buf) 610 if (!buf)
615 return -ENOMEM; 611 return -ENOMEM;
616 612
617 /* client */ 613 /* client */
618 err = -EINVAL; 614 err = -EINVAL;
619 if (qword_get(&mesg, buf, PAGE_SIZE) < 615 if (qword_get(&mesg, buf, PAGE_SIZE) <= 0)
620 goto out; 616 goto out;
621 617
622 err = -ENOENT; 618 err = -ENOENT;
623 dom = auth_domain_find(buf); 619 dom = auth_domain_find(buf);
624 if (!dom) 620 if (!dom)
625 goto out; 621 goto out;
626 622
627 /* path */ 623 /* path */
628 err = -EINVAL; 624 err = -EINVAL;
629 if (qword_get(&mesg, buf, PAGE_SIZE) < 625 if (qword_get(&mesg, buf, PAGE_SIZE) <= 0)
630 goto out1; 626 goto out1;
631 627
632 err = kern_path(buf, 0, &exp.ex_path); 628 err = kern_path(buf, 0, &exp.ex_path);
633 if (err) 629 if (err)
634 goto out1; 630 goto out1;
635 631
636 exp.ex_client = dom; 632 exp.ex_client = dom;
637 exp.cd = cd; 633 exp.cd = cd;
638 exp.ex_devid_map = NULL; 634 exp.ex_devid_map = NULL;
639 exp.ex_xprtsec_modes = NFSEXP_XPRTSEC_ 635 exp.ex_xprtsec_modes = NFSEXP_XPRTSEC_ALL;
640 636
641 /* expiry */ 637 /* expiry */
642 err = get_expiry(&mesg, &exp.h.expiry_ 638 err = get_expiry(&mesg, &exp.h.expiry_time);
643 if (err) 639 if (err)
644 goto out3; 640 goto out3;
645 641
646 /* flags */ 642 /* flags */
647 err = get_int(&mesg, &an_int); 643 err = get_int(&mesg, &an_int);
648 if (err == -ENOENT) { 644 if (err == -ENOENT) {
649 err = 0; 645 err = 0;
650 set_bit(CACHE_NEGATIVE, &exp.h 646 set_bit(CACHE_NEGATIVE, &exp.h.flags);
651 } else { 647 } else {
652 if (err || an_int < 0) 648 if (err || an_int < 0)
653 goto out3; 649 goto out3;
654 exp.ex_flags= an_int; 650 exp.ex_flags= an_int;
655 651
656 /* anon uid */ 652 /* anon uid */
657 err = get_int(&mesg, &an_int); 653 err = get_int(&mesg, &an_int);
658 if (err) 654 if (err)
659 goto out3; 655 goto out3;
660 exp.ex_anon_uid= make_kuid(cur 656 exp.ex_anon_uid= make_kuid(current_user_ns(), an_int);
661 657
662 /* anon gid */ 658 /* anon gid */
663 err = get_int(&mesg, &an_int); 659 err = get_int(&mesg, &an_int);
664 if (err) 660 if (err)
665 goto out3; 661 goto out3;
666 exp.ex_anon_gid= make_kgid(cur 662 exp.ex_anon_gid= make_kgid(current_user_ns(), an_int);
667 663
668 /* fsid */ 664 /* fsid */
669 err = get_int(&mesg, &an_int); 665 err = get_int(&mesg, &an_int);
670 if (err) 666 if (err)
671 goto out3; 667 goto out3;
672 exp.ex_fsid = an_int; 668 exp.ex_fsid = an_int;
673 669
674 while (qword_get(&mesg, buf, P 670 while (qword_get(&mesg, buf, PAGE_SIZE) > 0) {
675 if (strcmp(buf, "fsloc 671 if (strcmp(buf, "fsloc") == 0)
676 err = fsloc_pa 672 err = fsloc_parse(&mesg, buf, &exp.ex_fslocs);
677 else if (strcmp(buf, " 673 else if (strcmp(buf, "uuid") == 0)
678 err = nfsd_uui 674 err = nfsd_uuid_parse(&mesg, buf, &exp.ex_uuid);
679 else if (strcmp(buf, " 675 else if (strcmp(buf, "secinfo") == 0)
680 err = secinfo_ 676 err = secinfo_parse(&mesg, buf, &exp);
681 else if (strcmp(buf, " 677 else if (strcmp(buf, "xprtsec") == 0)
682 err = xprtsec_ 678 err = xprtsec_parse(&mesg, buf, &exp);
683 else 679 else
684 /* quietly ign 680 /* quietly ignore unknown words and anything
685 * following. 681 * following. Newer user-space can try to set
686 * new values, 682 * new values, then see what the result was.
687 */ 683 */
688 break; 684 break;
689 if (err) 685 if (err)
690 goto out4; 686 goto out4;
691 } 687 }
692 688
693 err = check_export(&exp.ex_pat 689 err = check_export(&exp.ex_path, &exp.ex_flags, exp.ex_uuid);
694 if (err) 690 if (err)
695 goto out4; 691 goto out4;
696 692
697 /* 693 /*
698 * No point caching this if it 694 * No point caching this if it would immediately expire.
699 * Also, this protects exportf 695 * Also, this protects exportfs's dummy export from the
700 * anon_uid/anon_gid checks: 696 * anon_uid/anon_gid checks:
701 */ 697 */
702 if (exp.h.expiry_time < second 698 if (exp.h.expiry_time < seconds_since_boot())
703 goto out4; 699 goto out4;
704 /* 700 /*
705 * For some reason exportfs ha 701 * For some reason exportfs has been passing down an
706 * invalid (-1) uid & gid on t 702 * invalid (-1) uid & gid on the "dummy" export which it
707 * uses to test export support 703 * uses to test export support. To make sure exportfs
708 * sees errors from check_expo 704 * sees errors from check_export we therefore need to
709 * delay these checks till aft 705 * delay these checks till after check_export:
710 */ 706 */
711 err = -EINVAL; 707 err = -EINVAL;
712 if (!uid_valid(exp.ex_anon_uid 708 if (!uid_valid(exp.ex_anon_uid))
713 goto out4; 709 goto out4;
714 if (!gid_valid(exp.ex_anon_gid 710 if (!gid_valid(exp.ex_anon_gid))
715 goto out4; 711 goto out4;
716 err = 0; 712 err = 0;
717 713
718 nfsd4_setup_layout_type(&exp); 714 nfsd4_setup_layout_type(&exp);
719 } 715 }
720 716
721 expp = svc_export_lookup(&exp); 717 expp = svc_export_lookup(&exp);
722 if (!expp) { 718 if (!expp) {
723 err = -ENOMEM; 719 err = -ENOMEM;
724 goto out4; 720 goto out4;
725 } 721 }
726 expp = svc_export_update(&exp, expp); 722 expp = svc_export_update(&exp, expp);
727 if (expp) { 723 if (expp) {
728 trace_nfsd_export_update(expp) 724 trace_nfsd_export_update(expp);
729 cache_flush(); 725 cache_flush();
730 exp_put(expp); 726 exp_put(expp);
731 } else 727 } else
732 err = -ENOMEM; 728 err = -ENOMEM;
733 out4: 729 out4:
734 nfsd4_fslocs_free(&exp.ex_fslocs); 730 nfsd4_fslocs_free(&exp.ex_fslocs);
735 kfree(exp.ex_uuid); 731 kfree(exp.ex_uuid);
736 out3: 732 out3:
737 path_put(&exp.ex_path); 733 path_put(&exp.ex_path);
738 out1: 734 out1:
739 auth_domain_put(dom); 735 auth_domain_put(dom);
740 out: 736 out:
741 kfree(buf); 737 kfree(buf);
742 return err; 738 return err;
743 } 739 }
744 740
745 static void exp_flags(struct seq_file *m, int 741 static void exp_flags(struct seq_file *m, int flag, int fsid,
746 kuid_t anonu, kgid_t anong, st 742 kuid_t anonu, kgid_t anong, struct nfsd4_fs_locations *fslocs);
747 static void show_secinfo(struct seq_file *m, s 743 static void show_secinfo(struct seq_file *m, struct svc_export *exp);
748 744
749 static int is_export_stats_file(struct seq_fil 745 static int is_export_stats_file(struct seq_file *m)
750 { 746 {
751 /* 747 /*
752 * The export_stats file uses the same 748 * The export_stats file uses the same ops as the exports file.
753 * We use the file's name to determine 749 * We use the file's name to determine the reported info per export.
754 * There is no rename in nsfdfs, so d_ 750 * There is no rename in nsfdfs, so d_name.name is stable.
755 */ 751 */
756 return !strcmp(m->file->f_path.dentry- 752 return !strcmp(m->file->f_path.dentry->d_name.name, "export_stats");
757 } 753 }
758 754
759 static int svc_export_show(struct seq_file *m, 755 static int svc_export_show(struct seq_file *m,
760 struct cache_detail 756 struct cache_detail *cd,
761 struct cache_head * 757 struct cache_head *h)
762 { 758 {
763 struct svc_export *exp; 759 struct svc_export *exp;
764 bool export_stats = is_export_stats_fi 760 bool export_stats = is_export_stats_file(m);
765 761
766 if (h == NULL) { 762 if (h == NULL) {
767 if (export_stats) 763 if (export_stats)
768 seq_puts(m, "#path dom 764 seq_puts(m, "#path domain start-time\n#\tstats\n");
769 else 765 else
770 seq_puts(m, "#path dom 766 seq_puts(m, "#path domain(flags)\n");
771 return 0; 767 return 0;
772 } 768 }
773 exp = container_of(h, struct svc_expor 769 exp = container_of(h, struct svc_export, h);
774 seq_path(m, &exp->ex_path, " \t\n\\"); 770 seq_path(m, &exp->ex_path, " \t\n\\");
775 seq_putc(m, '\t'); 771 seq_putc(m, '\t');
776 seq_escape(m, exp->ex_client->name, " 772 seq_escape(m, exp->ex_client->name, " \t\n\\");
777 if (export_stats) { 773 if (export_stats) {
778 struct percpu_counter *counter 774 struct percpu_counter *counter = exp->ex_stats->counter;
779 775
780 seq_printf(m, "\t%lld\n", exp- 776 seq_printf(m, "\t%lld\n", exp->ex_stats->start_time);
781 seq_printf(m, "\tfh_stale: %ll 777 seq_printf(m, "\tfh_stale: %lld\n",
782 percpu_counter_sum_ 778 percpu_counter_sum_positive(&counter[EXP_STATS_FH_STALE]));
783 seq_printf(m, "\tio_read: %lld 779 seq_printf(m, "\tio_read: %lld\n",
784 percpu_counter_sum_ 780 percpu_counter_sum_positive(&counter[EXP_STATS_IO_READ]));
785 seq_printf(m, "\tio_write: %ll 781 seq_printf(m, "\tio_write: %lld\n",
786 percpu_counter_sum_ 782 percpu_counter_sum_positive(&counter[EXP_STATS_IO_WRITE]));
787 seq_putc(m, '\n'); 783 seq_putc(m, '\n');
788 return 0; 784 return 0;
789 } 785 }
790 seq_putc(m, '('); 786 seq_putc(m, '(');
791 if (test_bit(CACHE_VALID, &h->flags) & 787 if (test_bit(CACHE_VALID, &h->flags) &&
792 !test_bit(CACHE_NEGATIVE, &h->flag 788 !test_bit(CACHE_NEGATIVE, &h->flags)) {
793 exp_flags(m, exp->ex_flags, ex 789 exp_flags(m, exp->ex_flags, exp->ex_fsid,
794 exp->ex_anon_uid, ex 790 exp->ex_anon_uid, exp->ex_anon_gid, &exp->ex_fslocs);
795 if (exp->ex_uuid) { 791 if (exp->ex_uuid) {
796 int i; 792 int i;
797 seq_puts(m, ",uuid="); 793 seq_puts(m, ",uuid=");
798 for (i = 0; i < EX_UUI 794 for (i = 0; i < EX_UUID_LEN; i++) {
799 if ((i&3) == 0 795 if ((i&3) == 0 && i)
800 seq_pu 796 seq_putc(m, ':');
801 seq_printf(m, 797 seq_printf(m, "%02x", exp->ex_uuid[i]);
802 } 798 }
803 } 799 }
804 show_secinfo(m, exp); 800 show_secinfo(m, exp);
805 } 801 }
806 seq_puts(m, ")\n"); 802 seq_puts(m, ")\n");
807 return 0; 803 return 0;
808 } 804 }
809 static int svc_export_match(struct cache_head 805 static int svc_export_match(struct cache_head *a, struct cache_head *b)
810 { 806 {
811 struct svc_export *orig = container_of 807 struct svc_export *orig = container_of(a, struct svc_export, h);
812 struct svc_export *new = container_of( 808 struct svc_export *new = container_of(b, struct svc_export, h);
813 return orig->ex_client == new->ex_clie 809 return orig->ex_client == new->ex_client &&
814 path_equal(&orig->ex_path, &ne 810 path_equal(&orig->ex_path, &new->ex_path);
815 } 811 }
816 812
817 static void svc_export_init(struct cache_head 813 static void svc_export_init(struct cache_head *cnew, struct cache_head *citem)
818 { 814 {
819 struct svc_export *new = container_of( 815 struct svc_export *new = container_of(cnew, struct svc_export, h);
820 struct svc_export *item = container_of 816 struct svc_export *item = container_of(citem, struct svc_export, h);
821 817
822 kref_get(&item->ex_client->ref); 818 kref_get(&item->ex_client->ref);
823 new->ex_client = item->ex_client; 819 new->ex_client = item->ex_client;
824 new->ex_path = item->ex_path; 820 new->ex_path = item->ex_path;
825 path_get(&item->ex_path); 821 path_get(&item->ex_path);
826 new->ex_fslocs.locations = NULL; 822 new->ex_fslocs.locations = NULL;
827 new->ex_fslocs.locations_count = 0; 823 new->ex_fslocs.locations_count = 0;
828 new->ex_fslocs.migrated = 0; 824 new->ex_fslocs.migrated = 0;
829 new->ex_layout_types = 0; 825 new->ex_layout_types = 0;
830 new->ex_uuid = NULL; 826 new->ex_uuid = NULL;
831 new->cd = item->cd; 827 new->cd = item->cd;
832 export_stats_reset(new->ex_stats); 828 export_stats_reset(new->ex_stats);
833 } 829 }
834 830
835 static void export_update(struct cache_head *c 831 static void export_update(struct cache_head *cnew, struct cache_head *citem)
836 { 832 {
837 struct svc_export *new = container_of( 833 struct svc_export *new = container_of(cnew, struct svc_export, h);
838 struct svc_export *item = container_of 834 struct svc_export *item = container_of(citem, struct svc_export, h);
839 int i; 835 int i;
840 836
841 new->ex_flags = item->ex_flags; 837 new->ex_flags = item->ex_flags;
842 new->ex_anon_uid = item->ex_anon_uid; 838 new->ex_anon_uid = item->ex_anon_uid;
843 new->ex_anon_gid = item->ex_anon_gid; 839 new->ex_anon_gid = item->ex_anon_gid;
844 new->ex_fsid = item->ex_fsid; 840 new->ex_fsid = item->ex_fsid;
845 new->ex_devid_map = item->ex_devid_map 841 new->ex_devid_map = item->ex_devid_map;
846 item->ex_devid_map = NULL; 842 item->ex_devid_map = NULL;
847 new->ex_uuid = item->ex_uuid; 843 new->ex_uuid = item->ex_uuid;
848 item->ex_uuid = NULL; 844 item->ex_uuid = NULL;
849 new->ex_fslocs.locations = item->ex_fs 845 new->ex_fslocs.locations = item->ex_fslocs.locations;
850 item->ex_fslocs.locations = NULL; 846 item->ex_fslocs.locations = NULL;
851 new->ex_fslocs.locations_count = item- 847 new->ex_fslocs.locations_count = item->ex_fslocs.locations_count;
852 item->ex_fslocs.locations_count = 0; 848 item->ex_fslocs.locations_count = 0;
853 new->ex_fslocs.migrated = item->ex_fsl 849 new->ex_fslocs.migrated = item->ex_fslocs.migrated;
854 item->ex_fslocs.migrated = 0; 850 item->ex_fslocs.migrated = 0;
855 new->ex_layout_types = item->ex_layout 851 new->ex_layout_types = item->ex_layout_types;
856 new->ex_nflavors = item->ex_nflavors; 852 new->ex_nflavors = item->ex_nflavors;
857 for (i = 0; i < MAX_SECINFO_LIST; i++) 853 for (i = 0; i < MAX_SECINFO_LIST; i++) {
858 new->ex_flavors[i] = item->ex_ 854 new->ex_flavors[i] = item->ex_flavors[i];
859 } 855 }
860 new->ex_xprtsec_modes = item->ex_xprts 856 new->ex_xprtsec_modes = item->ex_xprtsec_modes;
861 } 857 }
862 858
863 static struct cache_head *svc_export_alloc(voi 859 static struct cache_head *svc_export_alloc(void)
864 { 860 {
865 struct svc_export *i = kmalloc(sizeof( 861 struct svc_export *i = kmalloc(sizeof(*i), GFP_KERNEL);
866 if (!i) 862 if (!i)
867 return NULL; 863 return NULL;
868 864
869 i->ex_stats = kmalloc(sizeof(*(i->ex_s 865 i->ex_stats = kmalloc(sizeof(*(i->ex_stats)), GFP_KERNEL);
870 if (!i->ex_stats) { 866 if (!i->ex_stats) {
871 kfree(i); 867 kfree(i);
872 return NULL; 868 return NULL;
873 } 869 }
874 870
875 if (export_stats_init(i->ex_stats)) { 871 if (export_stats_init(i->ex_stats)) {
876 kfree(i->ex_stats); 872 kfree(i->ex_stats);
877 kfree(i); 873 kfree(i);
878 return NULL; 874 return NULL;
879 } 875 }
880 876
881 return &i->h; 877 return &i->h;
882 } 878 }
883 879
884 static const struct cache_detail svc_export_ca 880 static const struct cache_detail svc_export_cache_template = {
885 .owner = THIS_MODULE, 881 .owner = THIS_MODULE,
886 .hash_size = EXPORT_HASHMAX, 882 .hash_size = EXPORT_HASHMAX,
887 .name = "nfsd.export", 883 .name = "nfsd.export",
888 .cache_put = svc_export_put, 884 .cache_put = svc_export_put,
889 .cache_upcall = svc_export_upcall, 885 .cache_upcall = svc_export_upcall,
890 .cache_request = svc_export_request, 886 .cache_request = svc_export_request,
891 .cache_parse = svc_export_parse, 887 .cache_parse = svc_export_parse,
892 .cache_show = svc_export_show, 888 .cache_show = svc_export_show,
893 .match = svc_export_match, 889 .match = svc_export_match,
894 .init = svc_export_init, 890 .init = svc_export_init,
895 .update = export_update, 891 .update = export_update,
896 .alloc = svc_export_alloc, 892 .alloc = svc_export_alloc,
897 }; 893 };
898 894
899 static int 895 static int
900 svc_export_hash(struct svc_export *exp) 896 svc_export_hash(struct svc_export *exp)
901 { 897 {
902 int hash; 898 int hash;
903 899
904 hash = hash_ptr(exp->ex_client, EXPORT 900 hash = hash_ptr(exp->ex_client, EXPORT_HASHBITS);
905 hash ^= hash_ptr(exp->ex_path.dentry, 901 hash ^= hash_ptr(exp->ex_path.dentry, EXPORT_HASHBITS);
906 hash ^= hash_ptr(exp->ex_path.mnt, EXP 902 hash ^= hash_ptr(exp->ex_path.mnt, EXPORT_HASHBITS);
907 return hash; 903 return hash;
908 } 904 }
909 905
910 static struct svc_export * 906 static struct svc_export *
911 svc_export_lookup(struct svc_export *exp) 907 svc_export_lookup(struct svc_export *exp)
912 { 908 {
913 struct cache_head *ch; 909 struct cache_head *ch;
914 int hash = svc_export_hash(exp); 910 int hash = svc_export_hash(exp);
915 911
916 ch = sunrpc_cache_lookup_rcu(exp->cd, 912 ch = sunrpc_cache_lookup_rcu(exp->cd, &exp->h, hash);
917 if (ch) 913 if (ch)
918 return container_of(ch, struct 914 return container_of(ch, struct svc_export, h);
919 else 915 else
920 return NULL; 916 return NULL;
921 } 917 }
922 918
923 static struct svc_export * 919 static struct svc_export *
924 svc_export_update(struct svc_export *new, stru 920 svc_export_update(struct svc_export *new, struct svc_export *old)
925 { 921 {
926 struct cache_head *ch; 922 struct cache_head *ch;
927 int hash = svc_export_hash(old); 923 int hash = svc_export_hash(old);
928 924
929 ch = sunrpc_cache_update(old->cd, &new 925 ch = sunrpc_cache_update(old->cd, &new->h, &old->h, hash);
930 if (ch) 926 if (ch)
931 return container_of(ch, struct 927 return container_of(ch, struct svc_export, h);
932 else 928 else
933 return NULL; 929 return NULL;
934 } 930 }
935 931
936 932
937 static struct svc_expkey * 933 static struct svc_expkey *
938 exp_find_key(struct cache_detail *cd, struct a 934 exp_find_key(struct cache_detail *cd, struct auth_domain *clp, int fsid_type,
939 u32 *fsidv, struct cache_req *req 935 u32 *fsidv, struct cache_req *reqp)
940 { 936 {
941 struct svc_expkey key, *ek; 937 struct svc_expkey key, *ek;
942 int err; 938 int err;
943 939
944 if (!clp) 940 if (!clp)
945 return ERR_PTR(-ENOENT); 941 return ERR_PTR(-ENOENT);
946 942
947 key.ek_client = clp; 943 key.ek_client = clp;
948 key.ek_fsidtype = fsid_type; 944 key.ek_fsidtype = fsid_type;
949 memcpy(key.ek_fsid, fsidv, key_len(fsi 945 memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
950 946
951 ek = svc_expkey_lookup(cd, &key); 947 ek = svc_expkey_lookup(cd, &key);
952 if (ek == NULL) 948 if (ek == NULL)
953 return ERR_PTR(-ENOMEM); 949 return ERR_PTR(-ENOMEM);
954 err = cache_check(cd, &ek->h, reqp); 950 err = cache_check(cd, &ek->h, reqp);
955 if (err) { 951 if (err) {
956 trace_nfsd_exp_find_key(&key, 952 trace_nfsd_exp_find_key(&key, err);
957 return ERR_PTR(err); 953 return ERR_PTR(err);
958 } 954 }
959 return ek; 955 return ek;
960 } 956 }
961 957
962 static struct svc_export * 958 static struct svc_export *
963 exp_get_by_name(struct cache_detail *cd, struc 959 exp_get_by_name(struct cache_detail *cd, struct auth_domain *clp,
964 const struct path *path, struc 960 const struct path *path, struct cache_req *reqp)
965 { 961 {
966 struct svc_export *exp, key; 962 struct svc_export *exp, key;
967 int err; 963 int err;
968 964
969 if (!clp) 965 if (!clp)
970 return ERR_PTR(-ENOENT); 966 return ERR_PTR(-ENOENT);
971 967
972 key.ex_client = clp; 968 key.ex_client = clp;
973 key.ex_path = *path; 969 key.ex_path = *path;
974 key.cd = cd; 970 key.cd = cd;
975 971
976 exp = svc_export_lookup(&key); 972 exp = svc_export_lookup(&key);
977 if (exp == NULL) 973 if (exp == NULL)
978 return ERR_PTR(-ENOMEM); 974 return ERR_PTR(-ENOMEM);
979 err = cache_check(cd, &exp->h, reqp); 975 err = cache_check(cd, &exp->h, reqp);
980 if (err) { 976 if (err) {
981 trace_nfsd_exp_get_by_name(&ke 977 trace_nfsd_exp_get_by_name(&key, err);
982 return ERR_PTR(err); 978 return ERR_PTR(err);
983 } 979 }
984 return exp; 980 return exp;
985 } 981 }
986 982
987 /* 983 /*
988 * Find the export entry for a given dentry. 984 * Find the export entry for a given dentry.
989 */ 985 */
990 static struct svc_export * 986 static struct svc_export *
991 exp_parent(struct cache_detail *cd, struct aut 987 exp_parent(struct cache_detail *cd, struct auth_domain *clp, struct path *path)
992 { 988 {
993 struct dentry *saved = dget(path->dent 989 struct dentry *saved = dget(path->dentry);
994 struct svc_export *exp = exp_get_by_na 990 struct svc_export *exp = exp_get_by_name(cd, clp, path, NULL);
995 991
996 while (PTR_ERR(exp) == -ENOENT && !IS_ 992 while (PTR_ERR(exp) == -ENOENT && !IS_ROOT(path->dentry)) {
997 struct dentry *parent = dget_p 993 struct dentry *parent = dget_parent(path->dentry);
998 dput(path->dentry); 994 dput(path->dentry);
999 path->dentry = parent; 995 path->dentry = parent;
1000 exp = exp_get_by_name(cd, clp 996 exp = exp_get_by_name(cd, clp, path, NULL);
1001 } 997 }
1002 dput(path->dentry); 998 dput(path->dentry);
1003 path->dentry = saved; 999 path->dentry = saved;
1004 return exp; 1000 return exp;
1005 } 1001 }
1006 1002
1007 1003
1008 1004
1009 /* 1005 /*
1010 * Obtain the root fh on behalf of a client. 1006 * Obtain the root fh on behalf of a client.
1011 * This could be done in user space, but I fe 1007 * This could be done in user space, but I feel that it adds some safety
1012 * since its harder to fool a kernel module t 1008 * since its harder to fool a kernel module than a user space program.
1013 */ 1009 */
1014 int 1010 int
1015 exp_rootfh(struct net *net, struct auth_domai 1011 exp_rootfh(struct net *net, struct auth_domain *clp, char *name,
1016 struct knfsd_fh *f, int maxsize) 1012 struct knfsd_fh *f, int maxsize)
1017 { 1013 {
1018 struct svc_export *exp; 1014 struct svc_export *exp;
1019 struct path path; 1015 struct path path;
1020 struct inode *inode; 1016 struct inode *inode;
1021 struct svc_fh fh; 1017 struct svc_fh fh;
1022 int err; 1018 int err;
1023 struct nfsd_net *nn = net_gen 1019 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
1024 struct cache_detail *cd = nn->svc 1020 struct cache_detail *cd = nn->svc_export_cache;
1025 1021
1026 err = -EPERM; 1022 err = -EPERM;
1027 /* NB: we probably ought to check tha 1023 /* NB: we probably ought to check that it's NUL-terminated */
1028 if (kern_path(name, 0, &path)) { 1024 if (kern_path(name, 0, &path)) {
1029 printk("nfsd: exp_rootfh path 1025 printk("nfsd: exp_rootfh path not found %s", name);
1030 return err; 1026 return err;
1031 } 1027 }
1032 inode = d_inode(path.dentry); 1028 inode = d_inode(path.dentry);
1033 1029
1034 dprintk("nfsd: exp_rootfh(%s [%p] %s: 1030 dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n",
1035 name, path.dentry, clp->name 1031 name, path.dentry, clp->name,
1036 inode->i_sb->s_id, inode->i_ 1032 inode->i_sb->s_id, inode->i_ino);
1037 exp = exp_parent(cd, clp, &path); 1033 exp = exp_parent(cd, clp, &path);
1038 if (IS_ERR(exp)) { 1034 if (IS_ERR(exp)) {
1039 err = PTR_ERR(exp); 1035 err = PTR_ERR(exp);
1040 goto out; 1036 goto out;
1041 } 1037 }
1042 1038
1043 /* 1039 /*
1044 * fh must be initialized before call 1040 * fh must be initialized before calling fh_compose
1045 */ 1041 */
1046 fh_init(&fh, maxsize); 1042 fh_init(&fh, maxsize);
1047 if (fh_compose(&fh, exp, path.dentry, 1043 if (fh_compose(&fh, exp, path.dentry, NULL))
1048 err = -EINVAL; 1044 err = -EINVAL;
1049 else 1045 else
1050 err = 0; 1046 err = 0;
1051 memcpy(f, &fh.fh_handle, sizeof(struc 1047 memcpy(f, &fh.fh_handle, sizeof(struct knfsd_fh));
1052 fh_put(&fh); 1048 fh_put(&fh);
1053 exp_put(exp); 1049 exp_put(exp);
1054 out: 1050 out:
1055 path_put(&path); 1051 path_put(&path);
1056 return err; 1052 return err;
1057 } 1053 }
1058 1054
1059 static struct svc_export *exp_find(struct cac 1055 static struct svc_export *exp_find(struct cache_detail *cd,
1060 struct aut 1056 struct auth_domain *clp, int fsid_type,
1061 u32 *fsidv 1057 u32 *fsidv, struct cache_req *reqp)
1062 { 1058 {
1063 struct svc_export *exp; 1059 struct svc_export *exp;
1064 struct nfsd_net *nn = net_generic(cd- 1060 struct nfsd_net *nn = net_generic(cd->net, nfsd_net_id);
1065 struct svc_expkey *ek = exp_find_key( 1061 struct svc_expkey *ek = exp_find_key(nn->svc_expkey_cache, clp, fsid_type, fsidv, reqp);
1066 if (IS_ERR(ek)) 1062 if (IS_ERR(ek))
1067 return ERR_CAST(ek); 1063 return ERR_CAST(ek);
1068 1064
1069 exp = exp_get_by_name(cd, clp, &ek->e 1065 exp = exp_get_by_name(cd, clp, &ek->ek_path, reqp);
1070 cache_put(&ek->h, nn->svc_expkey_cach 1066 cache_put(&ek->h, nn->svc_expkey_cache);
1071 1067
1072 if (IS_ERR(exp)) 1068 if (IS_ERR(exp))
1073 return ERR_CAST(exp); 1069 return ERR_CAST(exp);
1074 return exp; 1070 return exp;
1075 } 1071 }
1076 1072
1077 /** <<
1078 * check_nfsd_access - check if access to exp <<
1079 * @exp: svc_export that is being accessed. <<
1080 * @rqstp: svc_rqst attempting to access @exp <<
1081 * <<
1082 * Return values: <<
1083 * %nfs_ok if access is granted, or <<
1084 * %nfserr_wrongsec if access is denied <<
1085 */ <<
1086 __be32 check_nfsd_access(struct svc_export *e 1073 __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp)
1087 { 1074 {
1088 struct exp_flavor_info *f, *end = exp 1075 struct exp_flavor_info *f, *end = exp->ex_flavors + exp->ex_nflavors;
1089 struct svc_xprt *xprt; !! 1076 struct svc_xprt *xprt = rqstp->rq_xprt;
1090 <<
1091 /* <<
1092 * If rqstp is NULL, this is a LOCALI <<
1093 * ever use a filehandle/credential p <<
1094 * been affirmed (by ACCESS or OPEN N <<
1095 * wire. So there is no need for furt <<
1096 */ <<
1097 if (!rqstp) <<
1098 return nfs_ok; <<
1099 <<
1100 xprt = rqstp->rq_xprt; <<
1101 1077
1102 if (exp->ex_xprtsec_modes & NFSEXP_XP 1078 if (exp->ex_xprtsec_modes & NFSEXP_XPRTSEC_NONE) {
1103 if (!test_bit(XPT_TLS_SESSION 1079 if (!test_bit(XPT_TLS_SESSION, &xprt->xpt_flags))
1104 goto ok; 1080 goto ok;
1105 } 1081 }
1106 if (exp->ex_xprtsec_modes & NFSEXP_XP 1082 if (exp->ex_xprtsec_modes & NFSEXP_XPRTSEC_TLS) {
1107 if (test_bit(XPT_TLS_SESSION, 1083 if (test_bit(XPT_TLS_SESSION, &xprt->xpt_flags) &&
1108 !test_bit(XPT_PEER_AUTH, 1084 !test_bit(XPT_PEER_AUTH, &xprt->xpt_flags))
1109 goto ok; 1085 goto ok;
1110 } 1086 }
1111 if (exp->ex_xprtsec_modes & NFSEXP_XP 1087 if (exp->ex_xprtsec_modes & NFSEXP_XPRTSEC_MTLS) {
1112 if (test_bit(XPT_TLS_SESSION, 1088 if (test_bit(XPT_TLS_SESSION, &xprt->xpt_flags) &&
1113 test_bit(XPT_PEER_AUTH, & 1089 test_bit(XPT_PEER_AUTH, &xprt->xpt_flags))
1114 goto ok; 1090 goto ok;
1115 } 1091 }
1116 goto denied; 1092 goto denied;
1117 1093
1118 ok: 1094 ok:
1119 /* legacy gss-only clients are always 1095 /* legacy gss-only clients are always OK: */
1120 if (exp->ex_client == rqstp->rq_gsscl 1096 if (exp->ex_client == rqstp->rq_gssclient)
1121 return nfs_ok; !! 1097 return 0;
1122 /* ip-address based client; check sec 1098 /* ip-address based client; check sec= export option: */
1123 for (f = exp->ex_flavors; f < end; f+ 1099 for (f = exp->ex_flavors; f < end; f++) {
1124 if (f->pseudoflavor == rqstp- 1100 if (f->pseudoflavor == rqstp->rq_cred.cr_flavor)
1125 return nfs_ok; !! 1101 return 0;
1126 } 1102 }
1127 /* defaults in absence of sec= option 1103 /* defaults in absence of sec= options: */
1128 if (exp->ex_nflavors == 0) { 1104 if (exp->ex_nflavors == 0) {
1129 if (rqstp->rq_cred.cr_flavor 1105 if (rqstp->rq_cred.cr_flavor == RPC_AUTH_NULL ||
1130 rqstp->rq_cred.cr_flavor 1106 rqstp->rq_cred.cr_flavor == RPC_AUTH_UNIX)
1131 return nfs_ok; !! 1107 return 0;
1132 } 1108 }
1133 1109
1134 /* If the compound op contains a spo_ 1110 /* If the compound op contains a spo_must_allowed op,
1135 * it will be sent with integrity/pro 1111 * it will be sent with integrity/protection which
1136 * will have to be expressly allowed 1112 * will have to be expressly allowed on mounts that
1137 * don't support it 1113 * don't support it
1138 */ 1114 */
1139 1115
1140 if (nfsd4_spo_must_allow(rqstp)) 1116 if (nfsd4_spo_must_allow(rqstp))
1141 return nfs_ok; !! 1117 return 0;
1142 1118
1143 denied: 1119 denied:
1144 return nfserr_wrongsec; !! 1120 return rqstp->rq_vers < 4 ? nfserr_acces : nfserr_wrongsec;
1145 } 1121 }
1146 1122
1147 /* 1123 /*
1148 * Uses rq_client and rq_gssclient to find an 1124 * Uses rq_client and rq_gssclient to find an export; uses rq_client (an
1149 * auth_unix client) if it's available and ha 1125 * auth_unix client) if it's available and has secinfo information;
1150 * otherwise, will try to use rq_gssclient. 1126 * otherwise, will try to use rq_gssclient.
1151 * 1127 *
1152 * Called from functions that handle requests 1128 * Called from functions that handle requests; functions that do work on
1153 * behalf of mountd are passed a single clien 1129 * behalf of mountd are passed a single client name to use, and should
1154 * use exp_get_by_name() or exp_find(). 1130 * use exp_get_by_name() or exp_find().
1155 */ 1131 */
1156 struct svc_export * 1132 struct svc_export *
1157 rqst_exp_get_by_name(struct svc_rqst *rqstp, 1133 rqst_exp_get_by_name(struct svc_rqst *rqstp, struct path *path)
1158 { 1134 {
1159 struct svc_export *gssexp, *exp = ERR 1135 struct svc_export *gssexp, *exp = ERR_PTR(-ENOENT);
1160 struct nfsd_net *nn = net_generic(SVC 1136 struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
1161 struct cache_detail *cd = nn->svc_exp 1137 struct cache_detail *cd = nn->svc_export_cache;
1162 1138
1163 if (rqstp->rq_client == NULL) 1139 if (rqstp->rq_client == NULL)
1164 goto gss; 1140 goto gss;
1165 1141
1166 /* First try the auth_unix client: */ 1142 /* First try the auth_unix client: */
1167 exp = exp_get_by_name(cd, rqstp->rq_c 1143 exp = exp_get_by_name(cd, rqstp->rq_client, path, &rqstp->rq_chandle);
1168 if (PTR_ERR(exp) == -ENOENT) 1144 if (PTR_ERR(exp) == -ENOENT)
1169 goto gss; 1145 goto gss;
1170 if (IS_ERR(exp)) 1146 if (IS_ERR(exp))
1171 return exp; 1147 return exp;
1172 /* If it has secinfo, assume there ar 1148 /* If it has secinfo, assume there are no gss/... clients */
1173 if (exp->ex_nflavors > 0) 1149 if (exp->ex_nflavors > 0)
1174 return exp; 1150 return exp;
1175 gss: 1151 gss:
1176 /* Otherwise, try falling back on gss 1152 /* Otherwise, try falling back on gss client */
1177 if (rqstp->rq_gssclient == NULL) 1153 if (rqstp->rq_gssclient == NULL)
1178 return exp; 1154 return exp;
1179 gssexp = exp_get_by_name(cd, rqstp->r 1155 gssexp = exp_get_by_name(cd, rqstp->rq_gssclient, path, &rqstp->rq_chandle);
1180 if (PTR_ERR(gssexp) == -ENOENT) 1156 if (PTR_ERR(gssexp) == -ENOENT)
1181 return exp; 1157 return exp;
1182 if (!IS_ERR(exp)) 1158 if (!IS_ERR(exp))
1183 exp_put(exp); 1159 exp_put(exp);
1184 return gssexp; 1160 return gssexp;
1185 } 1161 }
1186 1162
1187 /** <<
1188 * rqst_exp_find - Find an svc_export in the <<
1189 * @reqp: The handle to be used to susp <<
1190 * If NULL, missing in-cache inf <<
1191 * @net: The network namespace in whic <<
1192 * @cl: default auth_domain to use fo <<
1193 * @gsscl: an alternate auth_domain defi <<
1194 * @fsid_type: The type of fsid to look for <<
1195 * @fsidv: The actual fsid to look up in <<
1196 * <<
1197 * Perform a lookup for @cl/@fsidv in the giv <<
1198 * none found and @gsscl specified, repeat th <<
1199 * <<
1200 * Returns an export, or an error pointer. <<
1201 */ <<
1202 struct svc_export * 1163 struct svc_export *
1203 rqst_exp_find(struct cache_req *reqp, struct !! 1164 rqst_exp_find(struct svc_rqst *rqstp, int fsid_type, u32 *fsidv)
1204 struct auth_domain *cl, struct <<
1205 int fsid_type, u32 *fsidv) <<
1206 { 1165 {
1207 struct nfsd_net *nn = net_generic(net <<
1208 struct svc_export *gssexp, *exp = ERR 1166 struct svc_export *gssexp, *exp = ERR_PTR(-ENOENT);
>> 1167 struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
1209 struct cache_detail *cd = nn->svc_exp 1168 struct cache_detail *cd = nn->svc_export_cache;
1210 1169
1211 if (!cl) !! 1170 if (rqstp->rq_client == NULL)
1212 goto gss; 1171 goto gss;
1213 1172
1214 /* First try the auth_unix client: */ 1173 /* First try the auth_unix client: */
1215 exp = exp_find(cd, cl, fsid_type, fsi !! 1174 exp = exp_find(cd, rqstp->rq_client, fsid_type,
>> 1175 fsidv, &rqstp->rq_chandle);
1216 if (PTR_ERR(exp) == -ENOENT) 1176 if (PTR_ERR(exp) == -ENOENT)
1217 goto gss; 1177 goto gss;
1218 if (IS_ERR(exp)) 1178 if (IS_ERR(exp))
1219 return exp; 1179 return exp;
1220 /* If it has secinfo, assume there ar 1180 /* If it has secinfo, assume there are no gss/... clients */
1221 if (exp->ex_nflavors > 0) 1181 if (exp->ex_nflavors > 0)
1222 return exp; 1182 return exp;
1223 gss: 1183 gss:
1224 /* Otherwise, try falling back on gss 1184 /* Otherwise, try falling back on gss client */
1225 if (!gsscl) !! 1185 if (rqstp->rq_gssclient == NULL)
1226 return exp; 1186 return exp;
1227 gssexp = exp_find(cd, gsscl, fsid_typ !! 1187 gssexp = exp_find(cd, rqstp->rq_gssclient, fsid_type, fsidv,
>> 1188 &rqstp->rq_chandle);
1228 if (PTR_ERR(gssexp) == -ENOENT) 1189 if (PTR_ERR(gssexp) == -ENOENT)
1229 return exp; 1190 return exp;
1230 if (!IS_ERR(exp)) 1191 if (!IS_ERR(exp))
1231 exp_put(exp); 1192 exp_put(exp);
1232 return gssexp; 1193 return gssexp;
1233 } 1194 }
1234 1195
1235 struct svc_export * 1196 struct svc_export *
1236 rqst_exp_parent(struct svc_rqst *rqstp, struc 1197 rqst_exp_parent(struct svc_rqst *rqstp, struct path *path)
1237 { 1198 {
1238 struct dentry *saved = dget(path->den 1199 struct dentry *saved = dget(path->dentry);
1239 struct svc_export *exp = rqst_exp_get 1200 struct svc_export *exp = rqst_exp_get_by_name(rqstp, path);
1240 1201
1241 while (PTR_ERR(exp) == -ENOENT && !IS 1202 while (PTR_ERR(exp) == -ENOENT && !IS_ROOT(path->dentry)) {
1242 struct dentry *parent = dget_ 1203 struct dentry *parent = dget_parent(path->dentry);
1243 dput(path->dentry); 1204 dput(path->dentry);
1244 path->dentry = parent; 1205 path->dentry = parent;
1245 exp = rqst_exp_get_by_name(rq 1206 exp = rqst_exp_get_by_name(rqstp, path);
1246 } 1207 }
1247 dput(path->dentry); 1208 dput(path->dentry);
1248 path->dentry = saved; 1209 path->dentry = saved;
1249 return exp; 1210 return exp;
1250 } 1211 }
1251 1212
1252 struct svc_export *rqst_find_fsidzero_export( 1213 struct svc_export *rqst_find_fsidzero_export(struct svc_rqst *rqstp)
1253 { 1214 {
1254 u32 fsidv[2]; 1215 u32 fsidv[2];
1255 1216
1256 mk_fsid(FSID_NUM, fsidv, 0, 0, 0, NUL 1217 mk_fsid(FSID_NUM, fsidv, 0, 0, 0, NULL);
1257 1218
1258 return rqst_exp_find(&rqstp->rq_chand !! 1219 return rqst_exp_find(rqstp, FSID_NUM, fsidv);
1259 rqstp->rq_client <<
1260 FSID_NUM, fsidv) <<
1261 } 1220 }
1262 1221
1263 /* 1222 /*
1264 * Called when we need the filehandle for the 1223 * Called when we need the filehandle for the root of the pseudofs,
1265 * for a given NFSv4 client. The root is de 1224 * for a given NFSv4 client. The root is defined to be the
1266 * export point with fsid==0 1225 * export point with fsid==0
1267 */ 1226 */
1268 __be32 1227 __be32
1269 exp_pseudoroot(struct svc_rqst *rqstp, struct 1228 exp_pseudoroot(struct svc_rqst *rqstp, struct svc_fh *fhp)
1270 { 1229 {
1271 struct svc_export *exp; 1230 struct svc_export *exp;
1272 __be32 rv; 1231 __be32 rv;
1273 1232
1274 exp = rqst_find_fsidzero_export(rqstp 1233 exp = rqst_find_fsidzero_export(rqstp);
1275 if (IS_ERR(exp)) 1234 if (IS_ERR(exp))
1276 return nfserrno(PTR_ERR(exp)) 1235 return nfserrno(PTR_ERR(exp));
1277 rv = fh_compose(fhp, exp, exp->ex_pat 1236 rv = fh_compose(fhp, exp, exp->ex_path.dentry, NULL);
1278 exp_put(exp); 1237 exp_put(exp);
1279 return rv; 1238 return rv;
1280 } 1239 }
1281 1240
1282 static struct flags { 1241 static struct flags {
1283 int flag; 1242 int flag;
1284 char *name[2]; 1243 char *name[2];
1285 } expflags[] = { 1244 } expflags[] = {
1286 { NFSEXP_READONLY, {"ro", "rw"}}, 1245 { NFSEXP_READONLY, {"ro", "rw"}},
1287 { NFSEXP_INSECURE_PORT, {"insecure", 1246 { NFSEXP_INSECURE_PORT, {"insecure", ""}},
1288 { NFSEXP_ROOTSQUASH, {"root_squash", 1247 { NFSEXP_ROOTSQUASH, {"root_squash", "no_root_squash"}},
1289 { NFSEXP_ALLSQUASH, {"all_squash", "" 1248 { NFSEXP_ALLSQUASH, {"all_squash", ""}},
1290 { NFSEXP_ASYNC, {"async", "sync"}}, 1249 { NFSEXP_ASYNC, {"async", "sync"}},
1291 { NFSEXP_GATHERED_WRITES, {"wdelay", 1250 { NFSEXP_GATHERED_WRITES, {"wdelay", "no_wdelay"}},
1292 { NFSEXP_NOREADDIRPLUS, {"nordirplus" 1251 { NFSEXP_NOREADDIRPLUS, {"nordirplus", ""}},
1293 { NFSEXP_NOHIDE, {"nohide", ""}}, 1252 { NFSEXP_NOHIDE, {"nohide", ""}},
1294 { NFSEXP_CROSSMOUNT, {"crossmnt", ""} 1253 { NFSEXP_CROSSMOUNT, {"crossmnt", ""}},
1295 { NFSEXP_NOSUBTREECHECK, {"no_subtree 1254 { NFSEXP_NOSUBTREECHECK, {"no_subtree_check", ""}},
1296 { NFSEXP_NOAUTHNLM, {"insecure_locks" 1255 { NFSEXP_NOAUTHNLM, {"insecure_locks", ""}},
1297 { NFSEXP_V4ROOT, {"v4root", ""}}, 1256 { NFSEXP_V4ROOT, {"v4root", ""}},
1298 { NFSEXP_PNFS, {"pnfs", ""}}, 1257 { NFSEXP_PNFS, {"pnfs", ""}},
1299 { NFSEXP_SECURITY_LABEL, {"security_l 1258 { NFSEXP_SECURITY_LABEL, {"security_label", ""}},
1300 { 0, {"", ""}} 1259 { 0, {"", ""}}
1301 }; 1260 };
1302 1261
1303 static void show_expflags(struct seq_file *m, 1262 static void show_expflags(struct seq_file *m, int flags, int mask)
1304 { 1263 {
1305 struct flags *flg; 1264 struct flags *flg;
1306 int state, first = 0; 1265 int state, first = 0;
1307 1266
1308 for (flg = expflags; flg->flag; flg++ 1267 for (flg = expflags; flg->flag; flg++) {
1309 if (flg->flag & ~mask) 1268 if (flg->flag & ~mask)
1310 continue; 1269 continue;
1311 state = (flg->flag & flags) ? 1270 state = (flg->flag & flags) ? 0 : 1;
1312 if (*flg->name[state]) 1271 if (*flg->name[state])
1313 seq_printf(m, "%s%s", 1272 seq_printf(m, "%s%s", first++?",":"", flg->name[state]);
1314 } 1273 }
1315 } 1274 }
1316 1275
1317 static void show_secinfo_flags(struct seq_fil 1276 static void show_secinfo_flags(struct seq_file *m, int flags)
1318 { 1277 {
1319 seq_printf(m, ","); 1278 seq_printf(m, ",");
1320 show_expflags(m, flags, NFSEXP_SECINF 1279 show_expflags(m, flags, NFSEXP_SECINFO_FLAGS);
1321 } 1280 }
1322 1281
1323 static bool secinfo_flags_equal(int f, int g) 1282 static bool secinfo_flags_equal(int f, int g)
1324 { 1283 {
1325 f &= NFSEXP_SECINFO_FLAGS; 1284 f &= NFSEXP_SECINFO_FLAGS;
1326 g &= NFSEXP_SECINFO_FLAGS; 1285 g &= NFSEXP_SECINFO_FLAGS;
1327 return f == g; 1286 return f == g;
1328 } 1287 }
1329 1288
1330 static int show_secinfo_run(struct seq_file * 1289 static int show_secinfo_run(struct seq_file *m, struct exp_flavor_info **fp, struct exp_flavor_info *end)
1331 { 1290 {
1332 int flags; 1291 int flags;
1333 1292
1334 flags = (*fp)->flags; 1293 flags = (*fp)->flags;
1335 seq_printf(m, ",sec=%d", (*fp)->pseud 1294 seq_printf(m, ",sec=%d", (*fp)->pseudoflavor);
1336 (*fp)++; 1295 (*fp)++;
1337 while (*fp != end && secinfo_flags_eq 1296 while (*fp != end && secinfo_flags_equal(flags, (*fp)->flags)) {
1338 seq_printf(m, ":%d", (*fp)->p 1297 seq_printf(m, ":%d", (*fp)->pseudoflavor);
1339 (*fp)++; 1298 (*fp)++;
1340 } 1299 }
1341 return flags; 1300 return flags;
1342 } 1301 }
1343 1302
1344 static void show_secinfo(struct seq_file *m, 1303 static void show_secinfo(struct seq_file *m, struct svc_export *exp)
1345 { 1304 {
1346 struct exp_flavor_info *f; 1305 struct exp_flavor_info *f;
1347 struct exp_flavor_info *end = exp->ex 1306 struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors;
1348 int flags; 1307 int flags;
1349 1308
1350 if (exp->ex_nflavors == 0) 1309 if (exp->ex_nflavors == 0)
1351 return; 1310 return;
1352 f = exp->ex_flavors; 1311 f = exp->ex_flavors;
1353 flags = show_secinfo_run(m, &f, end); 1312 flags = show_secinfo_run(m, &f, end);
1354 if (!secinfo_flags_equal(flags, exp-> 1313 if (!secinfo_flags_equal(flags, exp->ex_flags))
1355 show_secinfo_flags(m, flags); 1314 show_secinfo_flags(m, flags);
1356 while (f != end) { 1315 while (f != end) {
1357 flags = show_secinfo_run(m, & 1316 flags = show_secinfo_run(m, &f, end);
1358 show_secinfo_flags(m, flags); 1317 show_secinfo_flags(m, flags);
1359 } 1318 }
1360 } 1319 }
1361 1320
1362 static void exp_flags(struct seq_file *m, int 1321 static void exp_flags(struct seq_file *m, int flag, int fsid,
1363 kuid_t anonu, kgid_t anong, s 1322 kuid_t anonu, kgid_t anong, struct nfsd4_fs_locations *fsloc)
1364 { 1323 {
1365 struct user_namespace *userns = m->fi 1324 struct user_namespace *userns = m->file->f_cred->user_ns;
1366 1325
1367 show_expflags(m, flag, NFSEXP_ALLFLAG 1326 show_expflags(m, flag, NFSEXP_ALLFLAGS);
1368 if (flag & NFSEXP_FSID) 1327 if (flag & NFSEXP_FSID)
1369 seq_printf(m, ",fsid=%d", fsi 1328 seq_printf(m, ",fsid=%d", fsid);
1370 if (!uid_eq(anonu, make_kuid(userns, 1329 if (!uid_eq(anonu, make_kuid(userns, (uid_t)-2)) &&
1371 !uid_eq(anonu, make_kuid(userns, 1330 !uid_eq(anonu, make_kuid(userns, 0x10000-2)))
1372 seq_printf(m, ",anonuid=%u", 1331 seq_printf(m, ",anonuid=%u", from_kuid_munged(userns, anonu));
1373 if (!gid_eq(anong, make_kgid(userns, 1332 if (!gid_eq(anong, make_kgid(userns, (gid_t)-2)) &&
1374 !gid_eq(anong, make_kgid(userns, 1333 !gid_eq(anong, make_kgid(userns, 0x10000-2)))
1375 seq_printf(m, ",anongid=%u", 1334 seq_printf(m, ",anongid=%u", from_kgid_munged(userns, anong));
1376 if (fsloc && fsloc->locations_count > 1335 if (fsloc && fsloc->locations_count > 0) {
1377 char *loctype = (fsloc->migra 1336 char *loctype = (fsloc->migrated) ? "refer" : "replicas";
1378 int i; 1337 int i;
1379 1338
1380 seq_printf(m, ",%s=", loctype 1339 seq_printf(m, ",%s=", loctype);
1381 seq_escape(m, fsloc->location 1340 seq_escape(m, fsloc->locations[0].path, ",;@ \t\n\\");
1382 seq_putc(m, '@'); 1341 seq_putc(m, '@');
1383 seq_escape(m, fsloc->location 1342 seq_escape(m, fsloc->locations[0].hosts, ",;@ \t\n\\");
1384 for (i = 1; i < fsloc->locati 1343 for (i = 1; i < fsloc->locations_count; i++) {
1385 seq_putc(m, ';'); 1344 seq_putc(m, ';');
1386 seq_escape(m, fsloc-> 1345 seq_escape(m, fsloc->locations[i].path, ",;@ \t\n\\");
1387 seq_putc(m, '@'); 1346 seq_putc(m, '@');
1388 seq_escape(m, fsloc-> 1347 seq_escape(m, fsloc->locations[i].hosts, ",;@ \t\n\\");
1389 } 1348 }
1390 } 1349 }
1391 } 1350 }
1392 1351
1393 static int e_show(struct seq_file *m, void *p 1352 static int e_show(struct seq_file *m, void *p)
1394 { 1353 {
1395 struct cache_head *cp = p; 1354 struct cache_head *cp = p;
1396 struct svc_export *exp = container_of 1355 struct svc_export *exp = container_of(cp, struct svc_export, h);
1397 struct cache_detail *cd = m->private; 1356 struct cache_detail *cd = m->private;
1398 bool export_stats = is_export_stats_f 1357 bool export_stats = is_export_stats_file(m);
1399 1358
1400 if (p == SEQ_START_TOKEN) { 1359 if (p == SEQ_START_TOKEN) {
1401 seq_puts(m, "# Version 1.1\n" 1360 seq_puts(m, "# Version 1.1\n");
1402 if (export_stats) 1361 if (export_stats)
1403 seq_puts(m, "# Path C 1362 seq_puts(m, "# Path Client Start-time\n#\tStats\n");
1404 else 1363 else
1405 seq_puts(m, "# Path C 1364 seq_puts(m, "# Path Client(Flags) # IPs\n");
1406 return 0; 1365 return 0;
1407 } 1366 }
1408 1367
1409 exp_get(exp); 1368 exp_get(exp);
1410 if (cache_check(cd, &exp->h, NULL)) 1369 if (cache_check(cd, &exp->h, NULL))
1411 return 0; 1370 return 0;
1412 exp_put(exp); 1371 exp_put(exp);
1413 return svc_export_show(m, cd, cp); 1372 return svc_export_show(m, cd, cp);
1414 } 1373 }
1415 1374
1416 const struct seq_operations nfs_exports_op = 1375 const struct seq_operations nfs_exports_op = {
1417 .start = cache_seq_start_rcu, 1376 .start = cache_seq_start_rcu,
1418 .next = cache_seq_next_rcu, 1377 .next = cache_seq_next_rcu,
1419 .stop = cache_seq_stop_rcu, 1378 .stop = cache_seq_stop_rcu,
1420 .show = e_show, 1379 .show = e_show,
1421 }; 1380 };
1422 1381
1423 /* 1382 /*
1424 * Initialize the exports module. 1383 * Initialize the exports module.
1425 */ 1384 */
1426 int 1385 int
1427 nfsd_export_init(struct net *net) 1386 nfsd_export_init(struct net *net)
1428 { 1387 {
1429 int rv; 1388 int rv;
1430 struct nfsd_net *nn = net_generic(net 1389 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
1431 1390
1432 dprintk("nfsd: initializing export mo 1391 dprintk("nfsd: initializing export module (net: %x).\n", net->ns.inum);
1433 1392
1434 nn->svc_export_cache = cache_create_n 1393 nn->svc_export_cache = cache_create_net(&svc_export_cache_template, net);
1435 if (IS_ERR(nn->svc_export_cache)) 1394 if (IS_ERR(nn->svc_export_cache))
1436 return PTR_ERR(nn->svc_export 1395 return PTR_ERR(nn->svc_export_cache);
1437 rv = cache_register_net(nn->svc_expor 1396 rv = cache_register_net(nn->svc_export_cache, net);
1438 if (rv) 1397 if (rv)
1439 goto destroy_export_cache; 1398 goto destroy_export_cache;
1440 1399
1441 nn->svc_expkey_cache = cache_create_n 1400 nn->svc_expkey_cache = cache_create_net(&svc_expkey_cache_template, net);
1442 if (IS_ERR(nn->svc_expkey_cache)) { 1401 if (IS_ERR(nn->svc_expkey_cache)) {
1443 rv = PTR_ERR(nn->svc_expkey_c 1402 rv = PTR_ERR(nn->svc_expkey_cache);
1444 goto unregister_export_cache; 1403 goto unregister_export_cache;
1445 } 1404 }
1446 rv = cache_register_net(nn->svc_expke 1405 rv = cache_register_net(nn->svc_expkey_cache, net);
1447 if (rv) 1406 if (rv)
1448 goto destroy_expkey_cache; 1407 goto destroy_expkey_cache;
1449 return 0; 1408 return 0;
1450 1409
1451 destroy_expkey_cache: 1410 destroy_expkey_cache:
1452 cache_destroy_net(nn->svc_expkey_cach 1411 cache_destroy_net(nn->svc_expkey_cache, net);
1453 unregister_export_cache: 1412 unregister_export_cache:
1454 cache_unregister_net(nn->svc_export_c 1413 cache_unregister_net(nn->svc_export_cache, net);
1455 destroy_export_cache: 1414 destroy_export_cache:
1456 cache_destroy_net(nn->svc_export_cach 1415 cache_destroy_net(nn->svc_export_cache, net);
1457 return rv; 1416 return rv;
1458 } 1417 }
1459 1418
1460 /* 1419 /*
1461 * Flush exports table - called when last nfs 1420 * Flush exports table - called when last nfsd thread is killed
1462 */ 1421 */
1463 void 1422 void
1464 nfsd_export_flush(struct net *net) 1423 nfsd_export_flush(struct net *net)
1465 { 1424 {
1466 struct nfsd_net *nn = net_generic(net 1425 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
1467 1426
1468 cache_purge(nn->svc_expkey_cache); 1427 cache_purge(nn->svc_expkey_cache);
1469 cache_purge(nn->svc_export_cache); 1428 cache_purge(nn->svc_export_cache);
1470 } 1429 }
1471 1430
1472 /* 1431 /*
1473 * Shutdown the exports module. 1432 * Shutdown the exports module.
1474 */ 1433 */
1475 void 1434 void
1476 nfsd_export_shutdown(struct net *net) 1435 nfsd_export_shutdown(struct net *net)
1477 { 1436 {
1478 struct nfsd_net *nn = net_generic(net 1437 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
1479 1438
1480 dprintk("nfsd: shutting down export m 1439 dprintk("nfsd: shutting down export module (net: %x).\n", net->ns.inum);
1481 1440
1482 cache_unregister_net(nn->svc_expkey_c 1441 cache_unregister_net(nn->svc_expkey_cache, net);
1483 cache_unregister_net(nn->svc_export_c 1442 cache_unregister_net(nn->svc_export_cache, net);
1484 cache_destroy_net(nn->svc_expkey_cach 1443 cache_destroy_net(nn->svc_expkey_cache, net);
1485 cache_destroy_net(nn->svc_export_cach 1444 cache_destroy_net(nn->svc_export_cache, net);
1486 svcauth_unix_purge(net); 1445 svcauth_unix_purge(net);
1487 1446
1488 dprintk("nfsd: export shutdown comple 1447 dprintk("nfsd: export shutdown complete (net: %x).\n", net->ns.inum);
1489 } 1448 }
1490 1449
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