Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
4ce79717 TM |
2 | /* |
3 | * linux/fs/nfs/nfs4_fs.h | |
4 | * | |
5 | * Copyright (C) 2005 Trond Myklebust | |
6 | * | |
7 | * NFSv4-specific filesystem definitions and declarations | |
8 | */ | |
9 | ||
10 | #ifndef __LINUX_FS_NFS_NFS4_FS_H | |
11 | #define __LINUX_FS_NFS_NFS4_FS_H | |
12 | ||
694e096f AS |
13 | #if defined(CONFIG_NFS_V4_2) |
14 | #define NFS4_MAX_MINOR_VERSION 2 | |
15 | #elif defined(CONFIG_NFS_V4_1) | |
16 | #define NFS4_MAX_MINOR_VERSION 1 | |
17 | #else | |
18 | #define NFS4_MAX_MINOR_VERSION 0 | |
19 | #endif | |
20 | ||
89d77c8f | 21 | #if IS_ENABLED(CONFIG_NFS_V4) |
4ce79717 | 22 | |
33021279 TM |
23 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
24 | ||
c137afab | 25 | #include <linux/seqlock.h> |
5970e15d | 26 | #include <linux/filelock.h> |
c137afab | 27 | |
4ce79717 TM |
28 | struct idmap; |
29 | ||
4ce79717 | 30 | enum nfs4_client_state { |
e005e804 | 31 | NFS4CLNT_MANAGER_RUNNING = 0, |
e598d843 | 32 | NFS4CLNT_CHECK_LEASE, |
58d9714a | 33 | NFS4CLNT_LEASE_EXPIRED, |
b79a4a1b TM |
34 | NFS4CLNT_RECLAIM_REBOOT, |
35 | NFS4CLNT_RECLAIM_NOGRACE, | |
707fb4b3 | 36 | NFS4CLNT_DELEGRETURN, |
6df08189 | 37 | NFS4CLNT_SESSION_RESET, |
fd954ae1 | 38 | NFS4CLNT_LEASE_CONFIRM, |
78fe0f41 | 39 | NFS4CLNT_SERVER_SCOPE_MISMATCH, |
2c820d9a | 40 | NFS4CLNT_PURGE_STATE, |
a9e64442 | 41 | NFS4CLNT_BIND_CONN_TO_SESSION, |
c9fdeb28 | 42 | NFS4CLNT_MOVED, |
b7f7a66e | 43 | NFS4CLNT_LEASE_MOVED, |
45870d69 | 44 | NFS4CLNT_DELEGATION_EXPIRED, |
aeabb3c9 | 45 | NFS4CLNT_RUN_MANAGER, |
4dc73c67 | 46 | NFS4CLNT_MANAGER_AVAILABLE, |
b5fdf841 TM |
47 | NFS4CLNT_RECALL_RUNNING, |
48 | NFS4CLNT_RECALL_ANY_LAYOUT_READ, | |
49 | NFS4CLNT_RECALL_ANY_LAYOUT_RW, | |
be200377 | 50 | NFS4CLNT_DELEGRETURN_DELAYED, |
4ce79717 TM |
51 | }; |
52 | ||
2f60ea6b TM |
53 | #define NFS4_RENEW_TIMEOUT 0x01 |
54 | #define NFS4_RENEW_DELEGATION_CB 0x02 | |
55 | ||
63f5f796 | 56 | struct nfs_seqid_counter; |
97dc1359 TM |
57 | struct nfs4_minor_version_ops { |
58 | u32 minor_version; | |
39c6daae | 59 | unsigned init_caps; |
97dc1359 | 60 | |
abf79bb3 CL |
61 | int (*init_client)(struct nfs_client *); |
62 | void (*shutdown_client)(struct nfs_client *); | |
36281caa | 63 | bool (*match_stateid)(const nfs4_stateid *, |
e047a10c | 64 | const nfs4_stateid *); |
fca78d6d BS |
65 | int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, |
66 | struct nfs_fsinfo *); | |
f1cdae87 | 67 | void (*free_lock_state)(struct nfs_server *, |
c8b2d0bf | 68 | struct nfs4_lock_state *); |
45870d69 | 69 | int (*test_and_free_expired)(struct nfs_server *, |
a52458b4 | 70 | nfs4_stateid *, const struct cred *); |
63f5f796 TM |
71 | struct nfs_seqid * |
72 | (*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); | |
10e037d1 S |
73 | void (*session_trunk)(struct rpc_clnt *clnt, |
74 | struct rpc_xprt *xprt, void *data); | |
9915ea7e | 75 | const struct rpc_call_ops *call_sync_ops; |
c48f4f35 TM |
76 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
77 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; | |
78 | const struct nfs4_state_maintenance_ops *state_renewal_ops; | |
ec011fe8 | 79 | const struct nfs4_mig_recovery_ops *mig_recovery_ops; |
97dc1359 TM |
80 | }; |
81 | ||
cee54fc9 TM |
82 | #define NFS_SEQID_CONFIRMED 1 |
83 | struct nfs_seqid_counter { | |
95b72eb0 | 84 | ktime_t create_time; |
48c22eb2 | 85 | int owner_id; |
cee54fc9 TM |
86 | int flags; |
87 | u32 counter; | |
7ba127ab TM |
88 | spinlock_t lock; /* Protects the list */ |
89 | struct list_head list; /* Defines sequence of RPC calls */ | |
90 | struct rpc_wait_queue wait; /* RPC call delay queue */ | |
cee54fc9 TM |
91 | }; |
92 | ||
93 | struct nfs_seqid { | |
cee54fc9 | 94 | struct nfs_seqid_counter *sequence; |
4e51336a | 95 | struct list_head list; |
4601df20 | 96 | struct rpc_task *task; |
cee54fc9 TM |
97 | }; |
98 | ||
99 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) | |
100 | { | |
101 | if (seqid_mutating_err(-status)) | |
102 | seqid->flags |= NFS_SEQID_CONFIRMED; | |
103 | } | |
104 | ||
4ce79717 TM |
105 | /* |
106 | * NFS4 state_owners and lock_owners are simply labels for ordered | |
107 | * sequences of RPC calls. Their sole purpose is to provide once-only | |
108 | * semantics by allowing the server to identify replayed requests. | |
4ce79717 TM |
109 | */ |
110 | struct nfs4_state_owner { | |
6f2e64d3 | 111 | struct nfs_server *so_server; |
0aaaf5c4 CL |
112 | struct list_head so_lru; |
113 | unsigned long so_expires; | |
24d292b8 | 114 | struct rb_node so_server_node; |
4ce79717 | 115 | |
a52458b4 | 116 | const struct cred *so_cred; /* Associated cred */ |
9f958ab8 TM |
117 | |
118 | spinlock_t so_lock; | |
119 | atomic_t so_count; | |
7eff03ae | 120 | unsigned long so_flags; |
4ce79717 | 121 | struct list_head so_states; |
cee54fc9 | 122 | struct nfs_seqid_counter so_seqid; |
76246c92 | 123 | seqcount_spinlock_t so_reclaim_seqcount; |
65b62a29 | 124 | struct mutex so_delegreturn_mutex; |
4ce79717 TM |
125 | }; |
126 | ||
7eff03ae TM |
127 | enum { |
128 | NFS_OWNER_RECLAIM_REBOOT, | |
129 | NFS_OWNER_RECLAIM_NOGRACE | |
130 | }; | |
131 | ||
afe6c27c AB |
132 | #define NFS_LOCK_NEW 0 |
133 | #define NFS_LOCK_RECLAIM 1 | |
134 | #define NFS_LOCK_EXPIRED 2 | |
135 | ||
4ce79717 TM |
136 | /* |
137 | * struct nfs4_state maintains the client-side state for a given | |
138 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). | |
139 | * | |
140 | * OPEN: | |
141 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, | |
142 | * we need to know how many files are open for reading or writing on a | |
143 | * given inode. This information too is stored here. | |
144 | * | |
145 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) | |
146 | */ | |
147 | ||
148 | struct nfs4_lock_state { | |
0c0e0d3c JL |
149 | struct list_head ls_locks; /* Other lock stateids */ |
150 | struct nfs4_state * ls_state; /* Pointer to open state */ | |
795a88c9 | 151 | #define NFS_LOCK_INITIALIZED 0 |
ef1820f9 | 152 | #define NFS_LOCK_LOST 1 |
ef8d98f2 | 153 | #define NFS_LOCK_UNLOCKING 2 |
0c0e0d3c | 154 | unsigned long ls_flags; |
cee54fc9 | 155 | struct nfs_seqid_counter ls_seqid; |
0c0e0d3c | 156 | nfs4_stateid ls_stateid; |
194bc1f4 | 157 | refcount_t ls_count; |
0c0e0d3c | 158 | fl_owner_t ls_owner; |
4ce79717 TM |
159 | }; |
160 | ||
161 | /* bits for nfs4_state->flags */ | |
162 | enum { | |
163 | LK_STATE_IN_USE, | |
003707c7 | 164 | NFS_DELEGATED_STATE, /* Current stateid is delegation */ |
92b40e93 | 165 | NFS_OPEN_STATE, /* OPEN stateid is set */ |
003707c7 TM |
166 | NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ |
167 | NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ | |
168 | NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ | |
b79a4a1b TM |
169 | NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ |
170 | NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ | |
8e469ebd | 171 | NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ |
5d422301 | 172 | NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ |
a8ce377a | 173 | NFS_STATE_MAY_NOTIFY_LOCK, /* server may CB_NOTIFY_LOCK */ |
c9399f21 | 174 | NFS_STATE_CHANGE_WAIT, /* A state changing operation is outstanding */ |
e4648aa4 | 175 | NFS_CLNT_DST_SSC_COPY_STATE, /* dst server open state on client*/ |
0e65a32c | 176 | NFS_CLNT_SRC_SSC_COPY_STATE, /* src server open state on client*/ |
0b9018b9 | 177 | NFS_SRV_SSC_COPY_STATE, /* ssc state on the dst server */ |
4ce79717 TM |
178 | }; |
179 | ||
180 | struct nfs4_state { | |
181 | struct list_head open_states; /* List of states for the same state_owner */ | |
182 | struct list_head inode_states; /* List of states for the same inode */ | |
183 | struct list_head lock_states; /* List of subservient lock stateids */ | |
184 | ||
185 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ | |
186 | struct inode *inode; /* Pointer to the inode */ | |
187 | ||
188 | unsigned long flags; /* Do we hold any locks? */ | |
8d0a8a9d | 189 | spinlock_t state_lock; /* Protects the lock_states list */ |
4ce79717 | 190 | |
8bda4e4c | 191 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
003707c7 TM |
192 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
193 | nfs4_stateid open_stateid; /* OPEN stateid */ | |
4ce79717 | 194 | |
8bda4e4c | 195 | /* The following 3 fields are protected by owner->so_lock */ |
003707c7 TM |
196 | unsigned int n_rdonly; /* Number of read-only references */ |
197 | unsigned int n_wronly; /* Number of write-only references */ | |
198 | unsigned int n_rdwr; /* Number of read/write references */ | |
dc0b027d | 199 | fmode_t state; /* State on the server (R,W, or RW) */ |
ace9fad4 | 200 | refcount_t count; |
c9399f21 TM |
201 | |
202 | wait_queue_head_t waitq; | |
9ae075fd | 203 | struct rcu_head rcu_head; |
4ce79717 TM |
204 | }; |
205 | ||
206 | ||
207 | struct nfs4_exception { | |
9e33bed5 | 208 | struct nfs4_state *state; |
3114ea7a | 209 | struct inode *inode; |
8487c479 | 210 | nfs4_stateid *stateid; |
b3c2aa07 | 211 | long timeout; |
5b9d31ae | 212 | unsigned short retrans; |
dfe1fe75 | 213 | unsigned char task_is_privileged : 1; |
b3c2aa07 TM |
214 | unsigned char delay : 1, |
215 | recovering : 1, | |
216 | retry : 1; | |
0688e64b | 217 | bool interruptible; |
4ce79717 TM |
218 | }; |
219 | ||
220 | struct nfs4_state_recovery_ops { | |
7eff03ae | 221 | int owner_flag_bit; |
b79a4a1b | 222 | int state_flag_bit; |
4ce79717 TM |
223 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
224 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); | |
a52458b4 N |
225 | int (*establish_clid)(struct nfs_client *, const struct cred *); |
226 | int (*reclaim_complete)(struct nfs_client *, const struct cred *); | |
05f4c350 | 227 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
a52458b4 | 228 | const struct cred *); |
4ce79717 TM |
229 | }; |
230 | ||
1b146fcf FI |
231 | struct nfs4_opendata { |
232 | struct kref kref; | |
233 | struct nfs_openargs o_arg; | |
234 | struct nfs_openres o_res; | |
235 | struct nfs_open_confirmargs c_arg; | |
236 | struct nfs_open_confirmres c_res; | |
237 | struct nfs4_string owner_name; | |
238 | struct nfs4_string group_name; | |
239 | struct nfs4_label *a_label; | |
240 | struct nfs_fattr f_attr; | |
1b146fcf FI |
241 | struct dentry *dir; |
242 | struct dentry *dentry; | |
243 | struct nfs4_state_owner *owner; | |
244 | struct nfs4_state *state; | |
245 | struct iattr attrs; | |
246 | struct nfs4_layoutget *lgp; | |
247 | unsigned long timestamp; | |
248 | bool rpc_done; | |
249 | bool file_created; | |
250 | bool is_recover; | |
251 | bool cancelled; | |
252 | int rpc_status; | |
253 | }; | |
254 | ||
04fa2c6b AA |
255 | struct nfs4_add_xprt_data { |
256 | struct nfs_client *clp; | |
a52458b4 | 257 | const struct cred *cred; |
04fa2c6b AA |
258 | }; |
259 | ||
29fba38b | 260 | struct nfs4_state_maintenance_ops { |
a52458b4 N |
261 | int (*sched_state_renewal)(struct nfs_client *, const struct cred *, unsigned); |
262 | const struct cred * (*get_state_renewal_cred)(struct nfs_client *); | |
263 | int (*renew_lease)(struct nfs_client *, const struct cred *); | |
29fba38b BH |
264 | }; |
265 | ||
ec011fe8 | 266 | struct nfs4_mig_recovery_ops { |
1976b2b3 OK |
267 | int (*get_locations)(struct nfs_server *, struct nfs_fh *, |
268 | struct nfs4_fs_locations *, struct page *, const struct cred *); | |
a52458b4 | 269 | int (*fsid_present)(struct inode *, const struct cred *); |
ec011fe8 CL |
270 | }; |
271 | ||
f786aa90 | 272 | extern const struct dentry_operations nfs4_dentry_operations; |
73a79706 BS |
273 | |
274 | /* dir.c */ | |
275 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, | |
44907d79 | 276 | unsigned, umode_t); |
6b3b5496 | 277 | |
f2aedb71 | 278 | /* fs_context.c */ |
1ae811ee | 279 | extern struct file_system_type nfs4_fs_type; |
280 | ||
72de53ec | 281 | /* nfs4namespace.c */ |
beffb8fe AV |
282 | struct rpc_clnt *nfs4_negotiate_security(struct rpc_clnt *, struct inode *, |
283 | const struct qstr *); | |
f2aedb71 | 284 | int nfs4_submount(struct fs_context *, struct nfs_server *); |
800c06a5 CL |
285 | int nfs4_replace_transport(struct nfs_server *server, |
286 | const struct nfs4_fs_locations *locations); | |
cf0d7e7f | 287 | size_t nfs_parse_server_name(char *string, size_t len, struct sockaddr_storage *ss, |
a8d54bab | 288 | size_t salen, struct net *net, int port); |
4ce79717 | 289 | /* nfs4proc.c */ |
f4ac1674 | 290 | extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception *); |
0f913a57 OK |
291 | extern int nfs4_async_handle_error(struct rpc_task *task, |
292 | struct nfs_server *server, | |
293 | struct nfs4_state *state, long *timeout); | |
1c6dcbe5 AS |
294 | extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, |
295 | struct rpc_message *, struct nfs4_sequence_args *, | |
296 | struct nfs4_sequence_res *, int); | |
fba83f34 | 297 | extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int, int); |
a52458b4 N |
298 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, const struct cred *, struct nfs4_setclientid_res *); |
299 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, const struct cred *); | |
5e6b1990 | 300 | extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); |
a52458b4 N |
301 | extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, const struct cred *cred); |
302 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred); | |
66245539 | 303 | extern int nfs4_destroy_clientid(struct nfs_client *clp); |
a52458b4 N |
304 | extern int nfs4_init_clientid(struct nfs_client *, const struct cred *); |
305 | extern int nfs41_init_clientid(struct nfs_client *, const struct cred *); | |
1f7977c1 | 306 | extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); |
55a97593 | 307 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
f05d147f BS |
308 | extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, |
309 | struct nfs4_fs_locations *, struct page *); | |
1976b2b3 OK |
310 | extern int nfs4_proc_get_locations(struct nfs_server *, struct nfs_fh *, |
311 | struct nfs4_fs_locations *, | |
312 | struct page *page, const struct cred *); | |
a52458b4 | 313 | extern int nfs4_proc_fsid_present(struct inode *, const struct cred *); |
f7b37b8b TM |
314 | extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, |
315 | struct dentry *, | |
316 | struct nfs_fh *, | |
317 | struct nfs_fattr *); | |
72de53ec | 318 | extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); |
f496647e | 319 | extern const struct xattr_handler * const nfs4_xattr_handlers[]; |
5521abfd | 320 | extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
321 | const struct nfs_open_context *ctx, |
322 | const struct nfs_lock_context *l_ctx, | |
323 | fmode_t fmode); | |
85847280 TM |
324 | extern void nfs4_bitmask_set(__u32 bitmask[], const __u32 src[], |
325 | struct inode *inode, unsigned long cache_validity); | |
ec4b0925 | 326 | extern int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
2ef61e0e | 327 | struct nfs_fattr *fattr, struct inode *inode); |
ec4b0925 OK |
328 | extern int update_open_stateid(struct nfs4_state *state, |
329 | const nfs4_stateid *open_stateid, | |
330 | const nfs4_stateid *deleg_stateid, | |
331 | fmode_t fmode); | |
ed5f17f6 | 332 | extern int nfs4_proc_setlease(struct file *file, int arg, |
e93a5e93 | 333 | struct file_lock **lease, void **priv); |
0efb01b2 DB |
334 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
335 | struct nfs_fsinfo *fsinfo); | |
1b523ca9 FL |
336 | extern void nfs4_update_changeattr(struct inode *dir, |
337 | struct nfs4_change_info *cinfo, | |
338 | unsigned long timestamp, | |
339 | unsigned long cache_validity); | |
ccde1e9c FL |
340 | extern int nfs4_buf_to_pages_noslab(const void *buf, size_t buflen, |
341 | struct page **pages); | |
1b523ca9 | 342 | |
557134a3 | 343 | #if defined(CONFIG_NFS_V4_1) |
f9c96fcc | 344 | extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); |
a52458b4 N |
345 | extern int nfs4_proc_create_session(struct nfs_client *, const struct cred *); |
346 | extern int nfs4_proc_destroy_session(struct nfs4_session *, const struct cred *); | |
863a3c6c | 347 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
ef311537 | 348 | bool sync); |
ba84db96 AA |
349 | extern int nfs4_detect_session_trunking(struct nfs_client *clp, |
350 | struct nfs41_exchange_id_res *res, struct rpc_xprt *xprt); | |
94de8b27 AA |
351 | |
352 | static inline bool | |
353 | is_ds_only_client(struct nfs_client *clp) | |
354 | { | |
355 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == | |
356 | EXCHGID4_FLAG_USE_PNFS_DS; | |
357 | } | |
d83217c1 AA |
358 | |
359 | static inline bool | |
360 | is_ds_client(struct nfs_client *clp) | |
361 | { | |
362 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; | |
363 | } | |
ab4c2361 | 364 | |
8c21c62c WAA |
365 | static inline bool |
366 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
367 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
ab4c2361 | 368 | { |
ab4c2361 WAA |
369 | rpc_authflavor_t flavor; |
370 | ||
b79e87e0 N |
371 | if (sp4_mode == NFS_SP4_MACH_CRED_CLEANUP || |
372 | sp4_mode == NFS_SP4_MACH_CRED_PNFS_CLEANUP) { | |
373 | /* Using machine creds for cleanup operations | |
374 | * is only relevent if the client credentials | |
375 | * might expire. So don't bother for | |
376 | * RPC_AUTH_UNIX. If file was only exported to | |
377 | * sec=sys, the PUTFH would fail anyway. | |
378 | */ | |
379 | if ((*clntp)->cl_auth->au_flavor == RPC_AUTH_UNIX) | |
380 | return false; | |
381 | } | |
ab4c2361 | 382 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { |
5e16923b | 383 | msg->rpc_cred = rpc_machine_cred(); |
ab4c2361 WAA |
384 | |
385 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
312cd958 WAA |
386 | WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && |
387 | flavor != RPC_AUTH_GSS_KRB5P); | |
ab4c2361 | 388 | *clntp = clp->cl_rpcclient; |
8c21c62c WAA |
389 | |
390 | return true; | |
ab4c2361 | 391 | } |
8c21c62c WAA |
392 | return false; |
393 | } | |
394 | ||
395 | /* | |
396 | * Function responsible for determining if an rpc_message should use the | |
397 | * machine cred under SP4_MACH_CRED and if so switching the credential and | |
398 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). | |
399 | * Should be called before rpc_call_sync/rpc_call_async. | |
400 | */ | |
401 | static inline void | |
402 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, | |
403 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
404 | { | |
405 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); | |
406 | } | |
407 | ||
408 | /* | |
409 | * Special wrapper to nfs4_state_protect for write. | |
410 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes | |
411 | * that use machine cred use NFS_FILE_SYNC. | |
412 | */ | |
413 | static inline void | |
414 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 415 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
416 | { |
417 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && | |
418 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) | |
d45f60c6 | 419 | hdr->args.stable = NFS_FILE_SYNC; |
ab4c2361 | 420 | } |
fbcd4abc | 421 | #else /* CONFIG_NFS_v4_1 */ |
94de8b27 AA |
422 | static inline bool |
423 | is_ds_only_client(struct nfs_client *clp) | |
d83217c1 AA |
424 | { |
425 | return false; | |
426 | } | |
427 | ||
428 | static inline bool | |
429 | is_ds_client(struct nfs_client *clp) | |
94de8b27 AA |
430 | { |
431 | return false; | |
432 | } | |
ab4c2361 WAA |
433 | |
434 | static inline void | |
435 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, | |
436 | struct rpc_clnt **clntp, struct rpc_message *msg) | |
437 | { | |
438 | } | |
8c21c62c WAA |
439 | |
440 | static inline void | |
441 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, | |
d45f60c6 | 442 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
8c21c62c WAA |
443 | { |
444 | } | |
557134a3 | 445 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 446 | |
97dc1359 | 447 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
29fba38b | 448 | |
1549210f | 449 | extern const u32 nfs4_fattr_bitmap[3]; |
a09df2ca DQ |
450 | extern const u32 nfs4_statfs_bitmap[3]; |
451 | extern const u32 nfs4_pathconf_bitmap[3]; | |
dae100c2 | 452 | extern const u32 nfs4_fsinfo_bitmap[3]; |
a09df2ca | 453 | extern const u32 nfs4_fs_locations_bitmap[3]; |
4ce79717 | 454 | |
abf79bb3 CL |
455 | void nfs40_shutdown_client(struct nfs_client *); |
456 | void nfs41_shutdown_client(struct nfs_client *); | |
457 | int nfs40_init_client(struct nfs_client *); | |
458 | int nfs41_init_client(struct nfs_client *); | |
cdb7eced BS |
459 | void nfs4_free_client(struct nfs_client *); |
460 | ||
6663ee7f BS |
461 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
462 | ||
4ce79717 | 463 | /* nfs4renewd.c */ |
adfa6f98 | 464 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
adfa6f98 | 465 | extern void nfs4_kill_renewd(struct nfs_client *); |
65f27f38 | 466 | extern void nfs4_renew_state(struct work_struct *); |
7dc2993a | 467 | extern void nfs4_set_lease_period(struct nfs_client *clp, unsigned long lease); |
fb10fb67 | 468 | |
4ce79717 TM |
469 | |
470 | /* nfs4state.c */ | |
d49dd117 BD |
471 | extern const nfs4_stateid current_stateid; |
472 | ||
a52458b4 N |
473 | const struct cred *nfs4_get_clid_cred(struct nfs_client *clp); |
474 | const struct cred *nfs4_get_machine_cred(struct nfs_client *clp); | |
475 | const struct cred *nfs4_get_renew_cred(struct nfs_client *clp); | |
05f4c350 CL |
476 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
477 | struct nfs_client **); | |
478 | int nfs40_discover_server_trunking(struct nfs_client *clp, | |
a52458b4 | 479 | struct nfs_client **, const struct cred *); |
a7b72103 | 480 | #if defined(CONFIG_NFS_V4_1) |
05f4c350 | 481 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
a52458b4 | 482 | struct nfs_client **, const struct cred *); |
9f594791 | 483 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
3f10a6af | 484 | extern void nfs41_notify_server(struct nfs_client *); |
0491567b OK |
485 | bool nfs4_check_serverowner_major_id(struct nfs41_server_owner *o1, |
486 | struct nfs41_server_owner *o2); | |
0400a6b0 | 487 | #else |
9f594791 | 488 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
0400a6b0 TM |
489 | { |
490 | } | |
a7b72103 | 491 | #endif /* CONFIG_NFS_V4_1 */ |
4ce79717 | 492 | |
a52458b4 | 493 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, const struct cred *, gfp_t); |
4ce79717 | 494 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
c77e2283 TM |
495 | extern void nfs4_purge_state_owners(struct nfs_server *, struct list_head *); |
496 | extern void nfs4_free_state_owners(struct list_head *head); | |
4ce79717 TM |
497 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
498 | extern void nfs4_put_open_state(struct nfs4_state *); | |
643168c2 AV |
499 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
500 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); | |
dc0b027d | 501 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
a1d0b5ee TM |
502 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
503 | const nfs4_stateid *stateid); | |
4f14c194 | 504 | extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *); |
0400a6b0 | 505 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
33021279 TM |
506 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
507 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); | |
b0d3ded1 | 508 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
042b60be | 509 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
5d422301 | 510 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
c9fdeb28 | 511 | extern int nfs4_schedule_migration_recovery(const struct nfs_server *); |
b7f7a66e | 512 | extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); |
0a014a44 | 513 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags, bool); |
78fe0f41 | 514 | extern void nfs41_handle_server_scope(struct nfs_client *, |
79d4e1f0 | 515 | struct nfs41_server_scope **); |
faf5f49c | 516 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
8d0a8a9d | 517 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
abf4e13c | 518 | extern int nfs4_select_rw_stateid(struct nfs4_state *, fmode_t, |
17393475 | 519 | const struct nfs_lock_context *, nfs4_stateid *, |
a52458b4 | 520 | const struct cred **); |
c82bac6f TM |
521 | extern bool nfs4_copy_open_stateid(nfs4_stateid *dst, |
522 | struct nfs4_state *state); | |
4ce79717 | 523 | |
8535b2be | 524 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
cee54fc9 TM |
525 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
526 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); | |
527 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); | |
72211dbe | 528 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
cee54fc9 | 529 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
3be0f80b | 530 | extern int nfs4_setup_sequence(struct nfs_client *client, |
cb04ad2a PT |
531 | struct nfs4_sequence_args *args, |
532 | struct nfs4_sequence_res *res, | |
533 | struct rpc_task *task); | |
2c4b131d PT |
534 | extern int nfs4_sequence_done(struct rpc_task *task, |
535 | struct nfs4_sequence_res *res); | |
cee54fc9 | 536 | |
5ae67c4f | 537 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
6b8d84e2 | 538 | extern int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res); |
4ce79717 | 539 | extern const nfs4_stateid zero_stateid; |
fcd8843c | 540 | extern const nfs4_stateid invalid_stateid; |
4ce79717 | 541 | |
129d1977 | 542 | /* nfs4super.c */ |
fbdefd64 | 543 | struct nfs_mount_info; |
ab7017a3 | 544 | extern struct nfs_subversion nfs_v4; |
fac1e8e4 BS |
545 | extern bool nfs4_disable_idmapping; |
546 | extern unsigned short max_session_slots; | |
5405fc44 | 547 | extern unsigned short max_session_cb_slots; |
fac1e8e4 | 548 | extern unsigned short send_implementation_id; |
f6de7a39 | 549 | extern bool recover_lost_locks; |
5b9d31ae | 550 | extern short nfs_delay_retrans; |
89d77c8f | 551 | |
6f2ea7f2 CL |
552 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
553 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; | |
554 | ||
f2aedb71 DH |
555 | extern int nfs4_try_get_tree(struct fs_context *); |
556 | extern int nfs4_get_referral_tree(struct fs_context *); | |
557 | ||
466bfe7f BS |
558 | /* nfs4sysctl.c */ |
559 | #ifdef CONFIG_SYSCTL | |
560 | int nfs4_register_sysctl(void); | |
561 | void nfs4_unregister_sysctl(void); | |
562 | #else | |
563 | static inline int nfs4_register_sysctl(void) | |
564 | { | |
565 | return 0; | |
566 | } | |
567 | ||
0add3e85 | 568 | static inline void nfs4_unregister_sysctl(void) |
466bfe7f BS |
569 | { |
570 | } | |
571 | #endif | |
572 | ||
4ce79717 | 573 | /* nfs4xdr.c */ |
499b4988 | 574 | extern const struct rpc_procinfo nfs4_procedures[]; |
4ce79717 | 575 | |
04a5da69 FL |
576 | #ifdef CONFIG_NFS_V4_2 |
577 | extern const u32 nfs42_maxsetxattr_overhead; | |
578 | extern const u32 nfs42_maxgetxattr_overhead; | |
579 | extern const u32 nfs42_maxlistxattrs_overhead; | |
580 | #endif | |
581 | ||
4ce79717 TM |
582 | struct nfs4_mount_data; |
583 | ||
584 | /* callback_xdr.c */ | |
e9679189 CH |
585 | extern const struct svc_version nfs4_callback_version1; |
586 | extern const struct svc_version nfs4_callback_version4; | |
4ce79717 | 587 | |
f597c537 TM |
588 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
589 | { | |
93b717fd TM |
590 | memcpy(dst->data, src->data, sizeof(dst->data)); |
591 | dst->type = src->type; | |
f597c537 TM |
592 | } |
593 | ||
594 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) | |
595 | { | |
93b717fd TM |
596 | if (dst->type != src->type) |
597 | return false; | |
598 | return memcmp(dst->data, src->data, sizeof(dst->data)) == 0; | |
f597c537 TM |
599 | } |
600 | ||
e999e80e TM |
601 | static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) |
602 | { | |
603 | return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; | |
604 | } | |
605 | ||
606 | static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) | |
607 | { | |
608 | return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; | |
609 | } | |
610 | ||
b4868b44 BC |
611 | static inline bool nfs4_stateid_is_next(const nfs4_stateid *s1, const nfs4_stateid *s2) |
612 | { | |
613 | u32 seq1 = be32_to_cpu(s1->seqid); | |
614 | u32 seq2 = be32_to_cpu(s2->seqid); | |
615 | ||
616 | return seq2 == seq1 + 1U || (seq2 == 1U && seq1 == 0xffffffffU); | |
617 | } | |
618 | ||
42c304c3 TM |
619 | static inline bool nfs4_stateid_match_or_older(const nfs4_stateid *dst, const nfs4_stateid *src) |
620 | { | |
621 | return nfs4_stateid_match_other(dst, src) && | |
622 | !(src->seqid && nfs4_stateid_is_newer(dst, src)); | |
623 | } | |
624 | ||
92283957 TM |
625 | static inline void nfs4_stateid_seqid_inc(nfs4_stateid *s1) |
626 | { | |
627 | u32 seqid = be32_to_cpu(s1->seqid); | |
628 | ||
629 | if (++seqid == 0) | |
630 | ++seqid; | |
631 | s1->seqid = cpu_to_be32(seqid); | |
632 | } | |
633 | ||
5d422301 TM |
634 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
635 | { | |
636 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; | |
637 | } | |
638 | ||
3e7dfb16 TM |
639 | static inline bool nfs4_state_match_open_stateid_other(const struct nfs4_state *state, |
640 | const nfs4_stateid *stateid) | |
641 | { | |
642 | return test_bit(NFS_OPEN_STATE, &state->flags) && | |
643 | nfs4_stateid_match_other(&state->open_stateid, stateid); | |
644 | } | |
645 | ||
95ad37f9 FL |
646 | /* nfs42xattr.c */ |
647 | #ifdef CONFIG_NFS_V4_2 | |
648 | extern int __init nfs4_xattr_cache_init(void); | |
649 | extern void nfs4_xattr_cache_exit(void); | |
650 | extern void nfs4_xattr_cache_add(struct inode *inode, const char *name, | |
651 | const char *buf, struct page **pages, | |
652 | ssize_t buflen); | |
653 | extern void nfs4_xattr_cache_remove(struct inode *inode, const char *name); | |
654 | extern ssize_t nfs4_xattr_cache_get(struct inode *inode, const char *name, | |
655 | char *buf, ssize_t buflen); | |
656 | extern void nfs4_xattr_cache_set_list(struct inode *inode, const char *buf, | |
657 | ssize_t buflen); | |
658 | extern ssize_t nfs4_xattr_cache_list(struct inode *inode, char *buf, | |
659 | ssize_t buflen); | |
660 | extern void nfs4_xattr_cache_zap(struct inode *inode); | |
4ce79717 | 661 | #else |
95ad37f9 FL |
662 | static inline void nfs4_xattr_cache_zap(struct inode *inode) |
663 | { | |
664 | } | |
665 | #endif /* CONFIG_NFS_V4_2 */ | |
666 | ||
667 | #else /* CONFIG_NFS_V4 */ | |
4ce79717 | 668 | |
643168c2 AV |
669 | #define nfs4_close_state(a, b) do { } while (0) |
670 | #define nfs4_close_sync(a, b) do { } while (0) | |
8c21c62c WAA |
671 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
672 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) | |
4ce79717 | 673 | |
95ad37f9 | 674 | |
4ce79717 TM |
675 | #endif /* CONFIG_NFS_V4 */ |
676 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |