Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
f7b422b1 DH |
2 | /* |
3 | * NFS internal definitions | |
4 | */ | |
5 | ||
eedc020e | 6 | #include "nfs4_fs.h" |
f2aedb71 | 7 | #include <linux/fs_context.h> |
f9c3a380 | 8 | #include <linux/security.h> |
1264a2f0 | 9 | #include <linux/crc32.h> |
9954bf92 | 10 | #include <linux/sunrpc/addr.h> |
47af81f2 | 11 | #include <linux/nfs_page.h> |
5dd43ce2 | 12 | #include <linux/wait_bit.h> |
f7b422b1 | 13 | |
62a55d08 | 14 | #define NFS_SB_MASK (SB_RDONLY|SB_NOSUID|SB_NODEV|SB_NOEXEC|SB_SYNCHRONOUS) |
08734048 | 15 | |
20fa1902 PT |
16 | extern const struct export_operations nfs_export_ops; |
17 | ||
54ceac45 | 18 | struct nfs_string; |
f2aedb71 | 19 | struct nfs_pageio_descriptor; |
54ceac45 | 20 | |
7ebb9315 BS |
21 | static inline void nfs_attr_check_mountpoint(struct super_block *parent, struct nfs_fattr *fattr) |
22 | { | |
23 | if (!nfs_fsid_equal(&NFS_SB(parent)->fsid, &fattr->fsid)) | |
24 | fattr->valid |= NFS_ATTR_FATTR_MOUNTPOINT; | |
25 | } | |
26 | ||
533eb461 AA |
27 | static inline int nfs_attr_use_mounted_on_fileid(struct nfs_fattr *fattr) |
28 | { | |
29 | if (((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) == 0) || | |
30 | (((fattr->valid & NFS_ATTR_FATTR_MOUNTPOINT) == 0) && | |
31 | ((fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) == 0))) | |
32 | return 0; | |
533eb461 AA |
33 | return 1; |
34 | } | |
35 | ||
f7b37b8b TM |
36 | static inline bool nfs_lookup_is_soft_revalidate(const struct dentry *dentry) |
37 | { | |
38 | if (!(NFS_SB(dentry->d_sb)->flags & NFS_MOUNT_SOFTREVAL)) | |
39 | return false; | |
40 | if (!d_is_positive(dentry) || !NFS_FH(d_inode(dentry))->size) | |
41 | return false; | |
42 | return true; | |
43 | } | |
44 | ||
b243874f C |
45 | static inline fmode_t flags_to_mode(int flags) |
46 | { | |
47 | fmode_t res = (__force fmode_t)flags & FMODE_EXEC; | |
48 | if ((flags & O_ACCMODE) != O_WRONLY) | |
49 | res |= FMODE_READ; | |
50 | if ((flags & O_ACCMODE) != O_RDONLY) | |
51 | res |= FMODE_WRITE; | |
52 | return res; | |
53 | } | |
54 | ||
a14017db CL |
55 | /* |
56 | * Note: RFC 1813 doesn't limit the number of auth flavors that | |
57 | * a server can return, so make something up. | |
58 | */ | |
59 | #define NFS_MAX_SECFLAVORS (12) | |
60 | ||
4cfd74fc CL |
61 | /* |
62 | * Value used if the user did not specify a port value. | |
63 | */ | |
64 | #define NFS_UNSPEC_PORT (-1) | |
65 | ||
a956beda TM |
66 | #define NFS_UNSPEC_RETRANS (UINT_MAX) |
67 | #define NFS_UNSPEC_TIMEO (UINT_MAX) | |
68 | ||
fcf10398 BS |
69 | struct nfs_client_initdata { |
70 | unsigned long init_flags; | |
5c6e5b60 | 71 | const char *hostname; /* Hostname of the server */ |
cf0d7e7f | 72 | const struct sockaddr_storage *addr; /* Address of the server */ |
5c6e5b60 TM |
73 | const char *nodename; /* Hostname of the client */ |
74 | const char *ip_addr; /* IP address of the client */ | |
fcf10398 | 75 | size_t addrlen; |
ab7017a3 | 76 | struct nfs_subversion *nfs_mod; |
fcf10398 BS |
77 | int proto; |
78 | u32 minorversion; | |
6619079d | 79 | unsigned int nconnect; |
7e134205 | 80 | unsigned int max_connect; |
fcf10398 | 81 | struct net *net; |
5c6e5b60 | 82 | const struct rpc_timeout *timeparms; |
1a58e8a0 | 83 | const struct cred *cred; |
6c0a8c5f | 84 | struct xprtsec_parms xprtsec; |
537935f7 TM |
85 | unsigned long connect_timeout; |
86 | unsigned long reconnect_timeout; | |
fcf10398 BS |
87 | }; |
88 | ||
6b18eaa0 TT |
89 | /* |
90 | * In-kernel mount arguments | |
91 | */ | |
5eb005ca | 92 | struct nfs_fs_context { |
f2aedb71 DH |
93 | bool internal; |
94 | bool skip_reconfig_option_check; | |
95 | bool need_mount; | |
96 | bool sloppy; | |
e558100f | 97 | unsigned int flags; /* NFS{,4}_MOUNT_* flags */ |
8cb7f74e CL |
98 | unsigned int rsize, wsize; |
99 | unsigned int timeo, retrans; | |
e558100f DH |
100 | unsigned int acregmin, acregmax; |
101 | unsigned int acdirmin, acdirmax; | |
8cb7f74e | 102 | unsigned int namlen; |
b797cac7 | 103 | unsigned int options; |
6b18eaa0 | 104 | unsigned int bsize; |
a3f73c27 WAA |
105 | struct nfs_auth_info auth_info; |
106 | rpc_authflavor_t selected_flavor; | |
c8407f2e | 107 | struct xprtsec_parms xprtsec; |
6b18eaa0 | 108 | char *client_address; |
764302cc | 109 | unsigned int version; |
3fd5be9e | 110 | unsigned int minorversion; |
08734048 | 111 | char *fscache_uniq; |
f8ee01e3 DH |
112 | unsigned short protofamily; |
113 | unsigned short mountfamily; | |
ec1ade6a | 114 | bool has_sec_mnt_opts; |
bf95f82e | 115 | int lock_status; |
6b18eaa0 TT |
116 | |
117 | struct { | |
e558100f DH |
118 | union { |
119 | struct sockaddr address; | |
120 | struct sockaddr_storage _address; | |
121 | }; | |
4c568017 | 122 | size_t addrlen; |
6b18eaa0 | 123 | char *hostname; |
78fa701f | 124 | u32 version; |
4cfd74fc | 125 | int port; |
78fa701f | 126 | unsigned short protocol; |
6b18eaa0 TT |
127 | } mount_server; |
128 | ||
129 | struct { | |
e558100f DH |
130 | union { |
131 | struct sockaddr address; | |
132 | struct sockaddr_storage _address; | |
133 | }; | |
4c568017 | 134 | size_t addrlen; |
6b18eaa0 TT |
135 | char *hostname; |
136 | char *export_path; | |
4cfd74fc | 137 | int port; |
78fa701f | 138 | unsigned short protocol; |
28cc5cd8 | 139 | unsigned short nconnect; |
7e134205 | 140 | unsigned short max_connect; |
f2aedb71 | 141 | unsigned short export_path_len; |
6b18eaa0 | 142 | } nfs_server; |
f9c3a380 | 143 | |
62a55d08 SM |
144 | struct nfs_fh *mntfh; |
145 | struct nfs_server *server; | |
146 | struct nfs_subversion *nfs_mod; | |
147 | ||
148 | /* Information for a cloned mount. */ | |
149 | struct nfs_clone_mount { | |
150 | struct super_block *sb; | |
151 | struct dentry *dentry; | |
152 | struct nfs_fattr *fattr; | |
153 | unsigned int inherited_bsize; | |
154 | } clone_data; | |
6b18eaa0 TT |
155 | }; |
156 | ||
bf95f82e CH |
157 | enum nfs_lock_status { |
158 | NFS_LOCK_NOT_SET = 0, | |
159 | NFS_LOCK_LOCK = 1, | |
160 | NFS_LOCK_NOLOCK = 2, | |
161 | }; | |
162 | ||
c98e9daa SM |
163 | #define nfs_errorf(fc, fmt, ...) ((fc)->log.log ? \ |
164 | errorf(fc, fmt, ## __VA_ARGS__) : \ | |
165 | ({ dprintk(fmt "\n", ## __VA_ARGS__); })) | |
166 | ||
167 | #define nfs_ferrorf(fc, fac, fmt, ...) ((fc)->log.log ? \ | |
168 | errorf(fc, fmt, ## __VA_ARGS__) : \ | |
169 | ({ dfprintk(fac, fmt "\n", ## __VA_ARGS__); })) | |
170 | ||
171 | #define nfs_invalf(fc, fmt, ...) ((fc)->log.log ? \ | |
172 | invalf(fc, fmt, ## __VA_ARGS__) : \ | |
173 | ({ dprintk(fmt "\n", ## __VA_ARGS__); -EINVAL; })) | |
174 | ||
175 | #define nfs_finvalf(fc, fac, fmt, ...) ((fc)->log.log ? \ | |
176 | invalf(fc, fmt, ## __VA_ARGS__) : \ | |
177 | ({ dfprintk(fac, fmt "\n", ## __VA_ARGS__); -EINVAL; })) | |
178 | ||
179 | #define nfs_warnf(fc, fmt, ...) ((fc)->log.log ? \ | |
180 | warnf(fc, fmt, ## __VA_ARGS__) : \ | |
181 | ({ dprintk(fmt "\n", ## __VA_ARGS__); })) | |
182 | ||
183 | #define nfs_fwarnf(fc, fac, fmt, ...) ((fc)->log.log ? \ | |
184 | warnf(fc, fmt, ## __VA_ARGS__) : \ | |
185 | ({ dfprintk(fac, fmt "\n", ## __VA_ARGS__); })) | |
ce8866f0 | 186 | |
f2aedb71 DH |
187 | static inline struct nfs_fs_context *nfs_fc2context(const struct fs_context *fc) |
188 | { | |
189 | return fc->fs_private; | |
190 | } | |
191 | ||
146ec944 | 192 | /* mount_clnt.c */ |
c5d120f8 | 193 | struct nfs_mount_request { |
cf0d7e7f | 194 | struct sockaddr_storage *sap; |
c5d120f8 CL |
195 | size_t salen; |
196 | char *hostname; | |
197 | char *dirpath; | |
198 | u32 version; | |
199 | unsigned short protocol; | |
200 | struct nfs_fh *fh; | |
50a737f8 | 201 | int noresvport; |
8e02f6b9 CL |
202 | unsigned int *auth_flav_len; |
203 | rpc_authflavor_t *auth_flavs; | |
6d59b8d5 | 204 | struct net *net; |
c5d120f8 CL |
205 | }; |
206 | ||
c9301cb3 | 207 | extern int nfs_mount(struct nfs_mount_request *info, int timeo, int retrans); |
0b524123 | 208 | extern void nfs_umount(const struct nfs_mount_request *info); |
146ec944 | 209 | |
24c8dbbb | 210 | /* client.c */ |
a613fa16 | 211 | extern const struct rpc_program nfs_program; |
6b13168b | 212 | extern void nfs_clients_init(struct net *net); |
10b7a70c | 213 | extern void nfs_clients_exit(struct net *net); |
6663ee7f | 214 | extern struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *); |
5c6e5b60 | 215 | int nfs_create_rpc_client(struct nfs_client *, const struct nfs_client_initdata *, rpc_authflavor_t); |
7d38de3f | 216 | struct nfs_client *nfs_get_client(const struct nfs_client_initdata *); |
e5731131 | 217 | int nfs_probe_server(struct nfs_server *, struct nfs_fh *); |
fcf10398 | 218 | void nfs_server_insert_lists(struct nfs_server *); |
32e62b7c | 219 | void nfs_server_remove_lists(struct nfs_server *); |
a956beda | 220 | void nfs_init_timeout_values(struct rpc_timeout *to, int proto, int timeo, int retrans); |
fcf10398 BS |
221 | int nfs_init_server_rpcclient(struct nfs_server *, const struct rpc_timeout *t, |
222 | rpc_authflavor_t); | |
223 | struct nfs_server *nfs_alloc_server(void); | |
224 | void nfs_server_copy_userdata(struct nfs_server *, struct nfs_server *); | |
54ceac45 | 225 | |
24c8dbbb | 226 | extern void nfs_put_client(struct nfs_client *); |
cdb7eced | 227 | extern void nfs_free_client(struct nfs_client *); |
28cd1b3f | 228 | extern struct nfs_client *nfs4_find_client_ident(struct net *, int); |
c36fca52 | 229 | extern struct nfs_client * |
c7add9a9 | 230 | nfs4_find_client_sessionid(struct net *, const struct sockaddr *, |
459de2ed | 231 | struct nfs4_sessionid *, u32); |
62a55d08 | 232 | extern struct nfs_server *nfs_create_server(struct fs_context *); |
01dde76e | 233 | extern void nfs4_server_set_init_caps(struct nfs_server *); |
62a55d08 SM |
234 | extern struct nfs_server *nfs4_create_server(struct fs_context *); |
235 | extern struct nfs_server *nfs4_create_referral_server(struct fs_context *); | |
32e62b7c | 236 | extern int nfs4_update_server(struct nfs_server *server, const char *hostname, |
cf0d7e7f | 237 | struct sockaddr_storage *sap, size_t salen, |
292f503c | 238 | struct net *net); |
54ceac45 DH |
239 | extern void nfs_free_server(struct nfs_server *server); |
240 | extern struct nfs_server *nfs_clone_server(struct nfs_server *, | |
241 | struct nfs_fh *, | |
7e6eb683 BS |
242 | struct nfs_fattr *, |
243 | rpc_authflavor_t); | |
a33e4b03 WAA |
244 | extern bool nfs_client_init_is_complete(const struct nfs_client *clp); |
245 | extern int nfs_client_init_status(const struct nfs_client *clp); | |
4697bd5e | 246 | extern int nfs_wait_client_init_complete(const struct nfs_client *clp); |
76db6d95 | 247 | extern void nfs_mark_client_ready(struct nfs_client *clp, int state); |
3fc75f12 | 248 | extern struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv, |
cf0d7e7f | 249 | const struct sockaddr_storage *ds_addr, |
98fc685a AA |
250 | int ds_addrlen, int ds_proto, |
251 | unsigned int ds_timeo, | |
064172f3 | 252 | unsigned int ds_retrans, |
7d38de3f | 253 | u32 minor_version); |
0e20162e AA |
254 | extern struct rpc_clnt *nfs4_find_or_create_ds_client(struct nfs_client *, |
255 | struct inode *); | |
b224f7cb | 256 | extern struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv, |
cf0d7e7f | 257 | const struct sockaddr_storage *ds_addr, int ds_addrlen, |
1a04c6e1 | 258 | int ds_proto, unsigned int ds_timeo, |
7d38de3f | 259 | unsigned int ds_retrans); |
6aaca566 DH |
260 | #ifdef CONFIG_PROC_FS |
261 | extern int __init nfs_fs_proc_init(void); | |
262 | extern void nfs_fs_proc_exit(void); | |
65b38851 EB |
263 | extern int nfs_fs_proc_net_init(struct net *net); |
264 | extern void nfs_fs_proc_net_exit(struct net *net); | |
6aaca566 | 265 | #else |
65b38851 EB |
266 | static inline int nfs_fs_proc_net_init(struct net *net) |
267 | { | |
268 | return 0; | |
269 | } | |
270 | static inline void nfs_fs_proc_net_exit(struct net *net) | |
271 | { | |
272 | } | |
6aaca566 DH |
273 | static inline int nfs_fs_proc_init(void) |
274 | { | |
275 | return 0; | |
276 | } | |
277 | static inline void nfs_fs_proc_exit(void) | |
278 | { | |
279 | } | |
280 | #endif | |
24c8dbbb | 281 | |
f7b422b1 | 282 | /* callback_xdr.c */ |
e9679189 CH |
283 | extern const struct svc_version nfs4_callback_version1; |
284 | extern const struct svc_version nfs4_callback_version4; | |
f7b422b1 | 285 | |
f2aedb71 DH |
286 | /* fs_context.c */ |
287 | extern struct file_system_type nfs_fs_type; | |
9954bf92 | 288 | |
f7b422b1 DH |
289 | /* pagelist.c */ |
290 | extern int __init nfs_init_nfspagecache(void); | |
266bee88 | 291 | extern void nfs_destroy_nfspagecache(void); |
f7b422b1 | 292 | extern int __init nfs_init_readpagecache(void); |
266bee88 | 293 | extern void nfs_destroy_readpagecache(void); |
f7b422b1 | 294 | extern int __init nfs_init_writepagecache(void); |
266bee88 | 295 | extern void nfs_destroy_writepagecache(void); |
f7b422b1 | 296 | |
f7b422b1 | 297 | extern int __init nfs_init_directcache(void); |
266bee88 | 298 | extern void nfs_destroy_directcache(void); |
4db6e0b7 FI |
299 | extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, |
300 | struct nfs_pgio_header *hdr, | |
301 | void (*release)(struct nfs_pgio_header *hdr)); | |
302 | void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos); | |
210c7c17 | 303 | int nfs_iocounter_wait(struct nfs_lock_context *l_ctx); |
577b4232 | 304 | |
41d8d5b7 | 305 | extern const struct nfs_pageio_ops nfs_pgio_rw_ops; |
1e7f3a48 WAA |
306 | struct nfs_pgio_header *nfs_pgio_header_alloc(const struct nfs_rw_ops *); |
307 | void nfs_pgio_header_free(struct nfs_pgio_header *); | |
ef2c488c | 308 | int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); |
46a5ab47 | 309 | int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr, |
a52458b4 | 310 | const struct cred *cred, const struct nfs_rpc_ops *rpc_ops, |
46a5ab47 | 311 | const struct rpc_call_ops *call_ops, int how, int flags); |
d4581383 | 312 | void nfs_free_request(struct nfs_page *req); |
48d635f1 PT |
313 | struct nfs_pgio_mirror * |
314 | nfs_pgio_current_mirror(struct nfs_pageio_descriptor *desc); | |
00bfa30a | 315 | |
138a2935 TM |
316 | static inline bool nfs_match_open_context(const struct nfs_open_context *ctx1, |
317 | const struct nfs_open_context *ctx2) | |
318 | { | |
a52458b4 | 319 | return cred_fscmp(ctx1->cred, ctx2->cred) == 0 && ctx1->state == ctx2->state; |
138a2935 TM |
320 | } |
321 | ||
f7b422b1 | 322 | /* nfs2xdr.c */ |
499b4988 | 323 | extern const struct rpc_procinfo nfs_procedures[]; |
573c4e1e | 324 | extern int nfs2_decode_dirent(struct xdr_stream *, |
a7a3b1e9 | 325 | struct nfs_entry *, bool); |
f7b422b1 DH |
326 | |
327 | /* nfs3xdr.c */ | |
499b4988 | 328 | extern const struct rpc_procinfo nfs3_procedures[]; |
573c4e1e | 329 | extern int nfs3_decode_dirent(struct xdr_stream *, |
a7a3b1e9 | 330 | struct nfs_entry *, bool); |
f7b422b1 DH |
331 | |
332 | /* nfs4xdr.c */ | |
89d77c8f | 333 | #if IS_ENABLED(CONFIG_NFS_V4) |
573c4e1e | 334 | extern int nfs4_decode_dirent(struct xdr_stream *, |
a7a3b1e9 | 335 | struct nfs_entry *, bool); |
7d4e2747 | 336 | #endif |
2449ea2e AB |
337 | #ifdef CONFIG_NFS_V4_1 |
338 | extern const u32 nfs41_maxread_overhead; | |
339 | extern const u32 nfs41_maxwrite_overhead; | |
f1c097be | 340 | extern const u32 nfs41_maxgetdevinfo_overhead; |
2449ea2e | 341 | #endif |
f7b422b1 DH |
342 | |
343 | /* nfs4proc.c */ | |
89d77c8f | 344 | #if IS_ENABLED(CONFIG_NFS_V4) |
499b4988 | 345 | extern const struct rpc_procinfo nfs4_procedures[]; |
d75d5414 | 346 | #endif |
f7b422b1 | 347 | |
694e096f AS |
348 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
349 | extern struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags); | |
a49c2691 KM |
350 | static inline struct nfs4_label * |
351 | nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src) | |
352 | { | |
353 | if (!dst || !src) | |
354 | return NULL; | |
355 | ||
356 | if (src->len > NFS4_MAXLABELLEN) | |
357 | return NULL; | |
358 | ||
359 | dst->lfs = src->lfs; | |
360 | dst->pi = src->pi; | |
361 | dst->len = src->len; | |
362 | memcpy(dst->label, src->label, src->len); | |
363 | ||
364 | return dst; | |
365 | } | |
fd1defc2 TM |
366 | |
367 | static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) | |
368 | { | |
369 | if (nfs_server_capable(&nfsi->vfs_inode, NFS_CAP_SECURITY_LABEL)) | |
370 | nfsi->cache_validity |= NFS_INO_INVALID_LABEL; | |
371 | } | |
694e096f AS |
372 | #else |
373 | static inline struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) { return NULL; } | |
fd1defc2 TM |
374 | static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) |
375 | { | |
376 | } | |
a49c2691 KM |
377 | static inline struct nfs4_label * |
378 | nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src) | |
379 | { | |
380 | return NULL; | |
381 | } | |
694e096f AS |
382 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ |
383 | ||
7fe5c398 TM |
384 | /* proc.c */ |
385 | void nfs_close_context(struct nfs_open_context *ctx, int is_sync); | |
8cab4c39 | 386 | extern struct nfs_client *nfs_init_client(struct nfs_client *clp, |
5c6e5b60 | 387 | const struct nfs_client_initdata *); |
7fe5c398 | 388 | |
979df72e | 389 | /* dir.c */ |
230bc98f TM |
390 | extern void nfs_readdir_record_entry_cache_hit(struct inode *dir); |
391 | extern void nfs_readdir_record_entry_cache_miss(struct inode *dir); | |
1ab6c499 DC |
392 | extern unsigned long nfs_access_cache_count(struct shrinker *shrink, |
393 | struct shrink_control *sc); | |
394 | extern unsigned long nfs_access_cache_scan(struct shrinker *shrink, | |
395 | struct shrink_control *sc); | |
597d9289 | 396 | struct dentry *nfs_lookup(struct inode *, struct dentry *, unsigned int); |
00bdadc7 | 397 | void nfs_d_prune_case_insensitive_aliases(struct inode *inode); |
6c960e68 | 398 | int nfs_create(struct mnt_idmap *, struct inode *, struct dentry *, |
549c7297 | 399 | umode_t, bool); |
c54bd91e | 400 | int nfs_mkdir(struct mnt_idmap *, struct inode *, struct dentry *, |
549c7297 | 401 | umode_t); |
597d9289 BS |
402 | int nfs_rmdir(struct inode *, struct dentry *); |
403 | int nfs_unlink(struct inode *, struct dentry *); | |
7a77db95 | 404 | int nfs_symlink(struct mnt_idmap *, struct inode *, struct dentry *, |
549c7297 | 405 | const char *); |
597d9289 | 406 | int nfs_link(struct dentry *, struct inode *, struct dentry *); |
5ebb29be | 407 | int nfs_mknod(struct mnt_idmap *, struct inode *, struct dentry *, umode_t, |
549c7297 | 408 | dev_t); |
e18275ae | 409 | int nfs_rename(struct mnt_idmap *, struct inode *, struct dentry *, |
1cd66c93 | 410 | struct inode *, struct dentry *, unsigned int); |
979df72e | 411 | |
84631f84 TM |
412 | #ifdef CONFIG_NFS_V4_2 |
413 | static inline __u32 nfs_access_xattr_mask(const struct nfs_server *server) | |
414 | { | |
415 | if (!(server->caps & NFS_CAP_XATTR)) | |
416 | return 0; | |
417 | return NFS4_ACCESS_XAREAD | NFS4_ACCESS_XAWRITE | NFS4_ACCESS_XALIST; | |
418 | } | |
419 | #else | |
420 | static inline __u32 nfs_access_xattr_mask(const struct nfs_server *server) | |
421 | { | |
422 | return 0; | |
423 | } | |
424 | #endif | |
425 | ||
ce4ef7c0 | 426 | /* file.c */ |
4ff79bc7 | 427 | int nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); |
ce4ef7c0 | 428 | loff_t nfs_file_llseek(struct file *, loff_t, int); |
3aa2d199 | 429 | ssize_t nfs_file_read(struct kiocb *, struct iov_iter *); |
a7db5034 DH |
430 | ssize_t nfs_file_splice_read(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe, |
431 | size_t len, unsigned int flags); | |
ce4ef7c0 | 432 | int nfs_file_mmap(struct file *, struct vm_area_struct *); |
edaf4369 | 433 | ssize_t nfs_file_write(struct kiocb *, struct iov_iter *); |
ce4ef7c0 BS |
434 | int nfs_file_release(struct inode *, struct file *); |
435 | int nfs_lock(struct file *, int, struct file_lock *); | |
436 | int nfs_flock(struct file *, int, struct file_lock *); | |
ce4ef7c0 | 437 | int nfs_check_flags(int); |
ce4ef7c0 | 438 | |
f7b422b1 | 439 | /* inode.c */ |
5746006f | 440 | extern struct workqueue_struct *nfsiod_workqueue; |
f7b422b1 | 441 | extern struct inode *nfs_alloc_inode(struct super_block *sb); |
ca1a199e | 442 | extern void nfs_free_inode(struct inode *); |
a9185b41 | 443 | extern int nfs_write_inode(struct inode *, struct writeback_control *); |
eed99357 | 444 | extern int nfs_drop_inode(struct inode *); |
19d87ca3 | 445 | extern void nfs_clear_inode(struct inode *); |
b57922d9 | 446 | extern void nfs_evict_inode(struct inode *); |
fd6d3fee TM |
447 | extern void nfs_zap_acl_cache(struct inode *inode); |
448 | extern void nfs_set_cache_invalid(struct inode *inode, unsigned long flags); | |
61540bf6 | 449 | extern bool nfs_check_cache_invalid(struct inode *, unsigned long); |
dfd01f02 | 450 | extern int nfs_wait_bit_killable(struct wait_bit_key *key, int mode); |
f7b422b1 DH |
451 | |
452 | /* super.c */ | |
6a74490d | 453 | extern const struct super_operations nfs_sops; |
4d4b69dd | 454 | bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t); |
f2aedb71 DH |
455 | int nfs_try_get_tree(struct fs_context *); |
456 | int nfs_get_tree_common(struct fs_context *); | |
fbdefd64 | 457 | void nfs_kill_super(struct super_block *); |
4ebd9ab3 | 458 | |
f7b422b1 DH |
459 | extern int __init register_nfs_fs(void); |
460 | extern void __exit unregister_nfs_fs(void); | |
ea7c38fe | 461 | extern bool nfs_sb_active(struct super_block *sb); |
1daef0a8 | 462 | extern void nfs_sb_deactive(struct super_block *sb); |
3c9e502b TM |
463 | extern int nfs_client_for_each_server(struct nfs_client *clp, |
464 | int (*fn)(struct nfs_server *, void *), | |
465 | void *data); | |
000dbe0b DW |
466 | #ifdef CONFIG_NFS_FSCACHE |
467 | extern const struct netfs_request_ops nfs_netfs_ops; | |
468 | #endif | |
469 | ||
a5864c99 TM |
470 | /* io.c */ |
471 | extern void nfs_start_io_read(struct inode *inode); | |
472 | extern void nfs_end_io_read(struct inode *inode); | |
473 | extern void nfs_start_io_write(struct inode *inode); | |
474 | extern void nfs_end_io_write(struct inode *inode); | |
475 | extern void nfs_start_io_direct(struct inode *inode); | |
476 | extern void nfs_end_io_direct(struct inode *inode); | |
477 | ||
651b0e70 TM |
478 | static inline bool nfs_file_io_is_buffered(struct nfs_inode *nfsi) |
479 | { | |
480 | return test_bit(NFS_INO_ODIRECT, &nfsi->flags) == 0; | |
481 | } | |
482 | ||
f7b422b1 | 483 | /* namespace.c */ |
97a54868 | 484 | #define NFS_PATH_CANONICAL 1 |
b514f872 | 485 | extern char *nfs_path(char **p, struct dentry *dentry, |
97a54868 | 486 | char *buffer, ssize_t buflen, unsigned flags); |
36d43a43 | 487 | extern struct vfsmount *nfs_d_automount(struct path *path); |
f2aedb71 DH |
488 | int nfs_submount(struct fs_context *, struct nfs_server *); |
489 | int nfs_do_submount(struct fs_context *); | |
f7b422b1 | 490 | |
54ceac45 | 491 | /* getroot.c */ |
62a55d08 | 492 | extern int nfs_get_root(struct super_block *s, struct fs_context *fc); |
89d77c8f | 493 | #if IS_ENABLED(CONFIG_NFS_V4) |
5e6b1990 | 494 | extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool); |
7d4e2747 | 495 | #endif |
f7b422b1 | 496 | |
061ae2ed | 497 | struct nfs_pgio_completion_ops; |
f11c88af | 498 | /* read.c */ |
000dbe0b | 499 | extern const struct nfs_pgio_completion_ops nfs_async_read_completion_ops; |
584aa810 | 500 | extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, |
fab5fc25 | 501 | struct inode *inode, bool force_mds, |
584aa810 | 502 | const struct nfs_pgio_completion_ops *compl_ops); |
303a7805 | 503 | extern bool nfs_read_alloc_scratch(struct nfs_pgio_header *hdr, size_t size); |
000dbe0b DW |
504 | extern int nfs_read_add_folio(struct nfs_pageio_descriptor *pgio, |
505 | struct nfs_open_context *ctx, | |
506 | struct folio *folio); | |
507 | extern void nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio); | |
f11c88af | 508 | extern void nfs_read_prepare(struct rpc_task *task, void *calldata); |
493292dd | 509 | extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); |
e885de1a | 510 | |
fbdefd64 | 511 | /* super.c */ |
fbdefd64 BS |
512 | void nfs_umount_begin(struct super_block *); |
513 | int nfs_statfs(struct dentry *, struct kstatfs *); | |
514 | int nfs_show_options(struct seq_file *, struct dentry *); | |
515 | int nfs_show_devname(struct seq_file *, struct dentry *); | |
516 | int nfs_show_path(struct seq_file *, struct dentry *); | |
517 | int nfs_show_stats(struct seq_file *, struct dentry *); | |
f2aedb71 | 518 | int nfs_reconfigure(struct fs_context *); |
fbdefd64 | 519 | |
def6ed7e | 520 | /* write.c */ |
1763da12 | 521 | extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, |
a20c93e3 | 522 | struct inode *inode, int ioflags, bool force_mds, |
1763da12 | 523 | const struct nfs_pgio_completion_ops *compl_ops); |
dce81290 | 524 | extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); |
0b7c0153 | 525 | extern void nfs_commit_free(struct nfs_commit_data *p); |
0b7c0153 FI |
526 | extern void nfs_commit_prepare(struct rpc_task *task, void *calldata); |
527 | extern int nfs_initiate_commit(struct rpc_clnt *clnt, | |
528 | struct nfs_commit_data *data, | |
c36aae9a | 529 | const struct nfs_rpc_ops *nfs_ops, |
e0c2b380 | 530 | const struct rpc_call_ops *call_ops, |
9f0ec176 | 531 | int how, int flags); |
0b7c0153 | 532 | extern void nfs_init_commit(struct nfs_commit_data *data, |
e0c2b380 | 533 | struct list_head *head, |
f453a54a FI |
534 | struct pnfs_layout_segment *lseg, |
535 | struct nfs_commit_info *cinfo); | |
1763da12 FI |
536 | int nfs_scan_commit_list(struct list_head *src, struct list_head *dst, |
537 | struct nfs_commit_info *cinfo, int max); | |
ce59515c | 538 | unsigned long nfs_reqs_to_commit(struct nfs_commit_info *); |
1763da12 FI |
539 | int nfs_scan_commit(struct inode *inode, struct list_head *dst, |
540 | struct nfs_commit_info *cinfo); | |
541 | void nfs_mark_request_commit(struct nfs_page *req, | |
542 | struct pnfs_layout_segment *lseg, | |
b57ff130 WAA |
543 | struct nfs_commit_info *cinfo, |
544 | u32 ds_commit_idx); | |
c65e6254 | 545 | int nfs_write_need_commit(struct nfs_pgio_header *); |
a08a8cd3 | 546 | void nfs_writeback_update_inode(struct nfs_pgio_header *hdr); |
1763da12 FI |
547 | int nfs_generic_commit_list(struct inode *inode, struct list_head *head, |
548 | int how, struct nfs_commit_info *cinfo); | |
e0c2b380 | 549 | void nfs_retry_commit(struct list_head *page_list, |
ea2cf228 | 550 | struct pnfs_layout_segment *lseg, |
b57ff130 WAA |
551 | struct nfs_commit_info *cinfo, |
552 | u32 ds_commit_idx); | |
0b7c0153 | 553 | void nfs_commitdata_release(struct nfs_commit_data *data); |
6272dcc6 | 554 | void nfs_request_add_commit_list(struct nfs_page *req, |
ea2cf228 | 555 | struct nfs_commit_info *cinfo); |
86d80f97 TM |
556 | void nfs_request_add_commit_list_locked(struct nfs_page *req, |
557 | struct list_head *dst, | |
558 | struct nfs_commit_info *cinfo); | |
ea2cf228 FI |
559 | void nfs_request_remove_commit_list(struct nfs_page *req, |
560 | struct nfs_commit_info *cinfo); | |
561 | void nfs_init_cinfo(struct nfs_commit_info *cinfo, | |
562 | struct inode *inode, | |
563 | struct nfs_direct_req *dreq); | |
dc24826b | 564 | int nfs_key_timeout_notify(struct file *filp, struct inode *inode); |
ce52914e | 565 | bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx, struct inode *inode); |
a7d42ddb | 566 | void nfs_pageio_stop_mirroring(struct nfs_pageio_descriptor *pgio); |
e0c2b380 | 567 | |
837bb1d7 TM |
568 | int nfs_filemap_write_and_wait_range(struct address_space *mapping, |
569 | loff_t lstart, loff_t lend); | |
570 | ||
a5314a74 | 571 | #ifdef CONFIG_NFS_V4_1 |
e3b9f7e6 TM |
572 | static inline void |
573 | pnfs_bucket_clear_pnfs_ds_commit_verifiers(struct pnfs_commit_bucket *buckets, | |
574 | unsigned int nbuckets) | |
575 | { | |
576 | unsigned int i; | |
577 | ||
578 | for (i = 0; i < nbuckets; i++) | |
579 | buckets[i].direct_verf.committed = NFS_INVALID_STABLE_HOW; | |
580 | } | |
a5314a74 TM |
581 | static inline |
582 | void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo) | |
583 | { | |
e3b9f7e6 TM |
584 | struct pnfs_commit_array *array; |
585 | ||
a9901899 TM |
586 | rcu_read_lock(); |
587 | list_for_each_entry_rcu(array, &cinfo->commits, cinfo_list) | |
e3b9f7e6 TM |
588 | pnfs_bucket_clear_pnfs_ds_commit_verifiers(array->buckets, |
589 | array->nbuckets); | |
a9901899 | 590 | rcu_read_unlock(); |
a5314a74 TM |
591 | } |
592 | #else | |
593 | static inline | |
594 | void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo) | |
595 | { | |
596 | } | |
597 | #endif | |
598 | ||
074cc1de | 599 | #ifdef CONFIG_MIGRATION |
4ae84a80 MWO |
600 | int nfs_migrate_folio(struct address_space *, struct folio *dst, |
601 | struct folio *src, enum migrate_mode); | |
602 | #else | |
603 | #define nfs_migrate_folio NULL | |
074cc1de | 604 | #endif |
def6ed7e | 605 | |
8fc3c386 TM |
606 | static inline int |
607 | nfs_write_verifier_cmp(const struct nfs_write_verifier *v1, | |
608 | const struct nfs_write_verifier *v2) | |
609 | { | |
610 | return memcmp(v1->data, v2->data, sizeof(v1->data)); | |
611 | } | |
612 | ||
1f28476d TM |
613 | static inline bool |
614 | nfs_write_match_verf(const struct nfs_writeverf *verf, | |
615 | struct nfs_page *req) | |
616 | { | |
617 | return verf->committed > NFS_UNSTABLE && | |
618 | !nfs_write_verifier_cmp(&req->wb_verf, &verf->verifier); | |
619 | } | |
620 | ||
515dcdcd TM |
621 | static inline gfp_t nfs_io_gfp_mask(void) |
622 | { | |
623 | if (current->flags & PF_WQ_WORKER) | |
624 | return GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN; | |
625 | return GFP_KERNEL; | |
626 | } | |
627 | ||
d7a51186 AS |
628 | /* |
629 | * Special version of should_remove_suid() that ignores capabilities. | |
630 | */ | |
631 | static inline int nfs_should_remove_suid(const struct inode *inode) | |
632 | { | |
633 | umode_t mode = inode->i_mode; | |
634 | int kill = 0; | |
635 | ||
636 | /* suid always must be killed */ | |
637 | if (unlikely(mode & S_ISUID)) | |
638 | kill = ATTR_KILL_SUID; | |
639 | ||
640 | /* | |
641 | * sgid without any exec bits is just a mandatory locking mark; leave | |
642 | * it alone. If some exec bits are set, it's a real sgid; kill it. | |
643 | */ | |
644 | if (unlikely((mode & S_ISGID) && (mode & S_IXGRP))) | |
645 | kill |= ATTR_KILL_SGID; | |
646 | ||
647 | if (unlikely(kill && S_ISREG(mode))) | |
648 | return kill; | |
649 | ||
650 | return 0; | |
651 | } | |
652 | ||
0e862a40 JL |
653 | /* unlink.c */ |
654 | extern struct rpc_task * | |
655 | nfs_async_rename(struct inode *old_dir, struct inode *new_dir, | |
656 | struct dentry *old_dentry, struct dentry *new_dentry, | |
657 | void (*complete)(struct rpc_task *, struct nfs_renamedata *)); | |
658 | extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry); | |
659 | ||
1763da12 FI |
660 | /* direct.c */ |
661 | void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, | |
662 | struct nfs_direct_req *dreq); | |
8a6291bf | 663 | extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq, loff_t offset); |
1763da12 | 664 | |
cccef3b9 | 665 | /* nfs4proc.c */ |
8cab4c39 | 666 | extern struct nfs_client *nfs4_init_client(struct nfs_client *clp, |
5c6e5b60 | 667 | const struct nfs_client_initdata *); |
05f4c350 CL |
668 | extern int nfs40_walk_client_list(struct nfs_client *clp, |
669 | struct nfs_client **result, | |
a52458b4 | 670 | const struct cred *cred); |
05f4c350 CL |
671 | extern int nfs41_walk_client_list(struct nfs_client *clp, |
672 | struct nfs_client **result, | |
a52458b4 | 673 | const struct cred *cred); |
10e037d1 S |
674 | extern void nfs4_test_session_trunk(struct rpc_clnt *clnt, |
675 | struct rpc_xprt *xprt, | |
676 | void *data); | |
cccef3b9 | 677 | |
ea7c38fe TM |
678 | static inline struct inode *nfs_igrab_and_active(struct inode *inode) |
679 | { | |
896567ee TM |
680 | struct super_block *sb = inode->i_sb; |
681 | ||
682 | if (sb && nfs_sb_active(sb)) { | |
683 | if (igrab(inode)) | |
684 | return inode; | |
685 | nfs_sb_deactive(sb); | |
ea7c38fe | 686 | } |
896567ee | 687 | return NULL; |
ea7c38fe TM |
688 | } |
689 | ||
690 | static inline void nfs_iput_and_deactive(struct inode *inode) | |
691 | { | |
692 | if (inode != NULL) { | |
693 | struct super_block *sb = inode->i_sb; | |
694 | ||
695 | iput(inode); | |
696 | nfs_sb_deactive(sb); | |
697 | } | |
698 | } | |
699 | ||
f7b422b1 DH |
700 | /* |
701 | * Determine the device name as a string | |
702 | */ | |
b514f872 | 703 | static inline char *nfs_devname(struct dentry *dentry, |
54ceac45 | 704 | char *buffer, ssize_t buflen) |
f7b422b1 | 705 | { |
b514f872 | 706 | char *dummy; |
97a54868 | 707 | return nfs_path(&dummy, dentry, buffer, buflen, NFS_PATH_CANONICAL); |
f7b422b1 DH |
708 | } |
709 | ||
710 | /* | |
711 | * Determine the actual block size (and log2 thereof) | |
712 | */ | |
713 | static inline | |
714 | unsigned long nfs_block_bits(unsigned long bsize, unsigned char *nrbitsp) | |
715 | { | |
716 | /* make sure blocksize is a power of two */ | |
717 | if ((bsize & (bsize - 1)) || nrbitsp) { | |
718 | unsigned char nrbits; | |
719 | ||
720 | for (nrbits = 31; nrbits && !(bsize & (1 << nrbits)); nrbits--) | |
721 | ; | |
722 | bsize = 1 << nrbits; | |
723 | if (nrbitsp) | |
724 | *nrbitsp = nrbits; | |
725 | } | |
726 | ||
727 | return bsize; | |
728 | } | |
729 | ||
730 | /* | |
731 | * Calculate the number of 512byte blocks used. | |
732 | */ | |
9eaa67c6 | 733 | static inline blkcnt_t nfs_calc_block_size(u64 tsize) |
f7b422b1 | 734 | { |
9eaa67c6 | 735 | blkcnt_t used = (tsize + 511) >> 9; |
f7b422b1 DH |
736 | return (used > ULONG_MAX) ? ULONG_MAX : used; |
737 | } | |
738 | ||
739 | /* | |
740 | * Compute and set NFS server blocksize | |
741 | */ | |
742 | static inline | |
743 | unsigned long nfs_block_size(unsigned long bsize, unsigned char *nrbitsp) | |
744 | { | |
745 | if (bsize < NFS_MIN_FILE_IO_SIZE) | |
746 | bsize = NFS_DEF_FILE_IO_SIZE; | |
747 | else if (bsize >= NFS_MAX_FILE_IO_SIZE) | |
748 | bsize = NFS_MAX_FILE_IO_SIZE; | |
749 | ||
750 | return nfs_block_bits(bsize, nrbitsp); | |
751 | } | |
752 | ||
940261a1 AS |
753 | /* |
754 | * Compute and set NFS server rsize / wsize | |
755 | */ | |
756 | static inline | |
757 | unsigned long nfs_io_size(unsigned long iosize, enum xprt_transports proto) | |
758 | { | |
759 | if (iosize < NFS_MIN_FILE_IO_SIZE) | |
760 | iosize = NFS_DEF_FILE_IO_SIZE; | |
761 | else if (iosize >= NFS_MAX_FILE_IO_SIZE) | |
762 | iosize = NFS_MAX_FILE_IO_SIZE; | |
940261a1 | 763 | |
a60214c2 | 764 | if (proto == XPRT_TRANSPORT_UDP || iosize < PAGE_SIZE) |
940261a1 | 765 | return nfs_block_bits(iosize, NULL); |
a60214c2 | 766 | return iosize & PAGE_MASK; |
940261a1 AS |
767 | } |
768 | ||
f7b422b1 DH |
769 | /* |
770 | * Determine the maximum file size for a superblock | |
771 | */ | |
772 | static inline | |
773 | void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize) | |
774 | { | |
775 | sb->s_maxbytes = (loff_t)maxfilesize; | |
776 | if (sb->s_maxbytes > MAX_LFS_FILESIZE || sb->s_maxbytes <= 0) | |
777 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
778 | } | |
49a70f27 | 779 | |
d15bc38d | 780 | /* |
8d92890b N |
781 | * Record the page as unstable (an extra writeback period) and mark its |
782 | * inode as dirty. | |
d15bc38d | 783 | */ |
0c493b5c TM |
784 | static inline void nfs_folio_mark_unstable(struct folio *folio, |
785 | struct nfs_commit_info *cinfo) | |
d15bc38d | 786 | { |
0c493b5c TM |
787 | if (folio && !cinfo->dreq) { |
788 | struct inode *inode = folio_file_mapping(folio)->host; | |
789 | long nr = folio_nr_pages(folio); | |
d15bc38d | 790 | |
8d92890b N |
791 | /* This page is really still in write-back - just that the |
792 | * writeback is happening on the server now. | |
793 | */ | |
0c493b5c TM |
794 | node_stat_mod_folio(folio, NR_WRITEBACK, nr); |
795 | wb_stat_mod(&inode_to_bdi(inode)->wb, WB_WRITEBACK, nr); | |
86d80f97 TM |
796 | __mark_inode_dirty(inode, I_DIRTY_DATASYNC); |
797 | } | |
d15bc38d TH |
798 | } |
799 | ||
49a70f27 TM |
800 | /* |
801 | * Determine the number of bytes of data the page contains | |
802 | */ | |
803 | static inline | |
804 | unsigned int nfs_page_length(struct page *page) | |
805 | { | |
d56b4ddf | 806 | loff_t i_size = i_size_read(page_file_mapping(page)->host); |
49a70f27 TM |
807 | |
808 | if (i_size > 0) { | |
8cd79788 | 809 | pgoff_t index = page_index(page); |
09cbfeaf | 810 | pgoff_t end_index = (i_size - 1) >> PAGE_SHIFT; |
8cd79788 | 811 | if (index < end_index) |
09cbfeaf | 812 | return PAGE_SIZE; |
8cd79788 | 813 | if (index == end_index) |
09cbfeaf | 814 | return ((i_size - 1) & ~PAGE_MASK) + 1; |
49a70f27 TM |
815 | } |
816 | return 0; | |
817 | } | |
8d5658c9 | 818 | |
ab75bff1 TM |
819 | /* |
820 | * Determine the number of bytes of data the page contains | |
821 | */ | |
822 | static inline size_t nfs_folio_length(struct folio *folio) | |
823 | { | |
824 | loff_t i_size = i_size_read(folio_file_mapping(folio)->host); | |
825 | ||
826 | if (i_size > 0) { | |
827 | pgoff_t index = folio_index(folio) >> folio_order(folio); | |
828 | pgoff_t end_index = (i_size - 1) >> folio_shift(folio); | |
829 | if (index < end_index) | |
830 | return folio_size(folio); | |
831 | if (index == end_index) | |
832 | return offset_in_folio(folio, i_size - 1) + 1; | |
833 | } | |
834 | return 0; | |
835 | } | |
836 | ||
0b26a0bf TM |
837 | /* |
838 | * Convert a umode to a dirent->d_type | |
839 | */ | |
840 | static inline | |
841 | unsigned char nfs_umode_to_dtype(umode_t mode) | |
842 | { | |
843 | return (mode >> 12) & 15; | |
844 | } | |
845 | ||
8d5658c9 TM |
846 | /* |
847 | * Determine the number of pages in an array of length 'len' and | |
848 | * with a base offset of 'base' | |
849 | */ | |
eb9f2a5a | 850 | static inline unsigned int nfs_page_array_len(unsigned int base, size_t len) |
8d5658c9 | 851 | { |
eb9f2a5a TM |
852 | return ((unsigned long)len + (unsigned long)base + PAGE_SIZE - 1) >> |
853 | PAGE_SHIFT; | |
8d5658c9 | 854 | } |
0110ee15 | 855 | |
3a1556e8 | 856 | /* |
ae08483c | 857 | * Convert a struct timespec64 into a 64-bit change attribute |
3a1556e8 | 858 | * |
ae08483c | 859 | * This does approximately the same thing as timespec64_to_ns(), |
3a1556e8 TM |
860 | * but for calculation efficiency, we multiply the seconds by |
861 | * 1024*1024*1024. | |
862 | */ | |
863 | static inline | |
e86d5a02 | 864 | u64 nfs_timespec_to_change_attr(const struct timespec64 *ts) |
3a1556e8 TM |
865 | { |
866 | return ((u64)ts->tv_sec << 30) + ts->tv_nsec; | |
867 | } | |
1264a2f0 TM |
868 | |
869 | #ifdef CONFIG_CRC32 | |
48c9579a OK |
870 | static inline u32 nfs_stateid_hash(const nfs4_stateid *stateid) |
871 | { | |
872 | return ~crc32_le(0xFFFFFFFF, &stateid->other[0], | |
873 | NFS4_STATEID_OTHER_SIZE); | |
874 | } | |
1264a2f0 | 875 | #else |
48c9579a OK |
876 | static inline u32 nfs_stateid_hash(nfs4_stateid *stateid) |
877 | { | |
878 | return 0; | |
879 | } | |
1264a2f0 | 880 | #endif |
0bcbf039 PT |
881 | |
882 | static inline bool nfs_error_is_fatal(int err) | |
883 | { | |
884 | switch (err) { | |
885 | case -ERESTARTSYS: | |
7dc58ca5 | 886 | case -EINTR: |
54551d85 TM |
887 | case -EACCES: |
888 | case -EDQUOT: | |
889 | case -EFBIG: | |
0bcbf039 PT |
890 | case -EIO: |
891 | case -ENOSPC: | |
892 | case -EROFS: | |
54551d85 | 893 | case -ESTALE: |
0bcbf039 | 894 | case -E2BIG: |
2dc23aff | 895 | case -ENOMEM: |
11982a7c | 896 | case -ETIMEDOUT: |
0bcbf039 PT |
897 | return true; |
898 | default: | |
899 | return false; | |
900 | } | |
901 | } | |
bf4b4905 | 902 | |
8f54c7a4 TM |
903 | static inline bool nfs_error_is_fatal_on_server(int err) |
904 | { | |
905 | switch (err) { | |
906 | case 0: | |
907 | case -ERESTARTSYS: | |
908 | case -EINTR: | |
45228440 | 909 | case -ENOMEM: |
8f54c7a4 TM |
910 | return false; |
911 | } | |
912 | return nfs_error_is_fatal(err); | |
913 | } | |
9954bf92 DH |
914 | |
915 | /* | |
916 | * Select between a default port value and a user-specified port value. | |
917 | * If a zero value is set, then autobind will be used. | |
918 | */ | |
cf0d7e7f | 919 | static inline void nfs_set_port(struct sockaddr_storage *sap, int *port, |
9954bf92 DH |
920 | const unsigned short default_port) |
921 | { | |
922 | if (*port == NFS_UNSPEC_PORT) | |
923 | *port = default_port; | |
924 | ||
cf0d7e7f | 925 | rpc_set_port((struct sockaddr *)sap, *port); |
9954bf92 | 926 | } |
8efc4bbe JL |
927 | |
928 | struct nfs_direct_req { | |
929 | struct kref kref; /* release manager */ | |
930 | ||
931 | /* I/O parameters */ | |
932 | struct nfs_open_context *ctx; /* file open context info */ | |
933 | struct nfs_lock_context *l_ctx; /* Lock context info */ | |
934 | struct kiocb * iocb; /* controlling i/o request */ | |
935 | struct inode * inode; /* target file of i/o */ | |
936 | ||
937 | /* completion state */ | |
938 | atomic_t io_count; /* i/os we're waiting for */ | |
939 | spinlock_t lock; /* protect completion state */ | |
940 | ||
941 | loff_t io_start; /* Start offset for I/O */ | |
942 | ssize_t count, /* bytes actually processed */ | |
943 | max_count, /* max expected count */ | |
8efc4bbe JL |
944 | error; /* any reported error */ |
945 | struct completion completion; /* wait for i/o completion */ | |
946 | ||
947 | /* commit state */ | |
948 | struct nfs_mds_commit_info mds_cinfo; /* Storage for cinfo */ | |
949 | struct pnfs_ds_commit_info ds_cinfo; /* Storage for cinfo */ | |
950 | struct work_struct work; | |
951 | int flags; | |
952 | /* for write */ | |
953 | #define NFS_ODIRECT_DO_COMMIT (1) /* an unstable reply was received */ | |
954 | #define NFS_ODIRECT_RESCHED_WRITES (2) /* write verification failed */ | |
955 | /* for read */ | |
956 | #define NFS_ODIRECT_SHOULD_DIRTY (3) /* dirty user-space page after read */ | |
957 | #define NFS_ODIRECT_DONE INT_MAX /* write verification failed */ | |
958 | }; |