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; |
fcf10398 BS |
84 | }; |
85 | ||
6b18eaa0 TT |
86 | /* |
87 | * In-kernel mount arguments | |
88 | */ | |
5eb005ca | 89 | struct nfs_fs_context { |
f2aedb71 DH |
90 | bool internal; |
91 | bool skip_reconfig_option_check; | |
92 | bool need_mount; | |
93 | bool sloppy; | |
e558100f | 94 | unsigned int flags; /* NFS{,4}_MOUNT_* flags */ |
8cb7f74e CL |
95 | unsigned int rsize, wsize; |
96 | unsigned int timeo, retrans; | |
e558100f DH |
97 | unsigned int acregmin, acregmax; |
98 | unsigned int acdirmin, acdirmax; | |
8cb7f74e | 99 | unsigned int namlen; |
b797cac7 | 100 | unsigned int options; |
6b18eaa0 | 101 | unsigned int bsize; |
a3f73c27 WAA |
102 | struct nfs_auth_info auth_info; |
103 | rpc_authflavor_t selected_flavor; | |
6b18eaa0 | 104 | char *client_address; |
764302cc | 105 | unsigned int version; |
3fd5be9e | 106 | unsigned int minorversion; |
08734048 | 107 | char *fscache_uniq; |
f8ee01e3 DH |
108 | unsigned short protofamily; |
109 | unsigned short mountfamily; | |
ec1ade6a | 110 | bool has_sec_mnt_opts; |
6b18eaa0 TT |
111 | |
112 | struct { | |
e558100f DH |
113 | union { |
114 | struct sockaddr address; | |
115 | struct sockaddr_storage _address; | |
116 | }; | |
4c568017 | 117 | size_t addrlen; |
6b18eaa0 | 118 | char *hostname; |
78fa701f | 119 | u32 version; |
4cfd74fc | 120 | int port; |
78fa701f | 121 | unsigned short protocol; |
6b18eaa0 TT |
122 | } mount_server; |
123 | ||
124 | struct { | |
e558100f DH |
125 | union { |
126 | struct sockaddr address; | |
127 | struct sockaddr_storage _address; | |
128 | }; | |
4c568017 | 129 | size_t addrlen; |
6b18eaa0 TT |
130 | char *hostname; |
131 | char *export_path; | |
4cfd74fc | 132 | int port; |
78fa701f | 133 | unsigned short protocol; |
28cc5cd8 | 134 | unsigned short nconnect; |
7e134205 | 135 | unsigned short max_connect; |
f2aedb71 | 136 | unsigned short export_path_len; |
6b18eaa0 | 137 | } nfs_server; |
f9c3a380 | 138 | |
62a55d08 SM |
139 | struct nfs_fh *mntfh; |
140 | struct nfs_server *server; | |
141 | struct nfs_subversion *nfs_mod; | |
142 | ||
143 | /* Information for a cloned mount. */ | |
144 | struct nfs_clone_mount { | |
145 | struct super_block *sb; | |
146 | struct dentry *dentry; | |
147 | struct nfs_fattr *fattr; | |
148 | unsigned int inherited_bsize; | |
149 | } clone_data; | |
6b18eaa0 TT |
150 | }; |
151 | ||
c98e9daa SM |
152 | #define nfs_errorf(fc, fmt, ...) ((fc)->log.log ? \ |
153 | errorf(fc, fmt, ## __VA_ARGS__) : \ | |
154 | ({ dprintk(fmt "\n", ## __VA_ARGS__); })) | |
155 | ||
156 | #define nfs_ferrorf(fc, fac, fmt, ...) ((fc)->log.log ? \ | |
157 | errorf(fc, fmt, ## __VA_ARGS__) : \ | |
158 | ({ dfprintk(fac, fmt "\n", ## __VA_ARGS__); })) | |
159 | ||
160 | #define nfs_invalf(fc, fmt, ...) ((fc)->log.log ? \ | |
161 | invalf(fc, fmt, ## __VA_ARGS__) : \ | |
162 | ({ dprintk(fmt "\n", ## __VA_ARGS__); -EINVAL; })) | |
163 | ||
164 | #define nfs_finvalf(fc, fac, fmt, ...) ((fc)->log.log ? \ | |
165 | invalf(fc, fmt, ## __VA_ARGS__) : \ | |
166 | ({ dfprintk(fac, fmt "\n", ## __VA_ARGS__); -EINVAL; })) | |
167 | ||
168 | #define nfs_warnf(fc, fmt, ...) ((fc)->log.log ? \ | |
169 | warnf(fc, fmt, ## __VA_ARGS__) : \ | |
170 | ({ dprintk(fmt "\n", ## __VA_ARGS__); })) | |
171 | ||
172 | #define nfs_fwarnf(fc, fac, fmt, ...) ((fc)->log.log ? \ | |
173 | warnf(fc, fmt, ## __VA_ARGS__) : \ | |
174 | ({ dfprintk(fac, fmt "\n", ## __VA_ARGS__); })) | |
ce8866f0 | 175 | |
f2aedb71 DH |
176 | static inline struct nfs_fs_context *nfs_fc2context(const struct fs_context *fc) |
177 | { | |
178 | return fc->fs_private; | |
179 | } | |
180 | ||
146ec944 | 181 | /* mount_clnt.c */ |
c5d120f8 | 182 | struct nfs_mount_request { |
cf0d7e7f | 183 | struct sockaddr_storage *sap; |
c5d120f8 CL |
184 | size_t salen; |
185 | char *hostname; | |
186 | char *dirpath; | |
187 | u32 version; | |
188 | unsigned short protocol; | |
189 | struct nfs_fh *fh; | |
50a737f8 | 190 | int noresvport; |
8e02f6b9 CL |
191 | unsigned int *auth_flav_len; |
192 | rpc_authflavor_t *auth_flavs; | |
6d59b8d5 | 193 | struct net *net; |
c5d120f8 CL |
194 | }; |
195 | ||
c9301cb3 | 196 | extern int nfs_mount(struct nfs_mount_request *info, int timeo, int retrans); |
0b524123 | 197 | extern void nfs_umount(const struct nfs_mount_request *info); |
146ec944 | 198 | |
24c8dbbb | 199 | /* client.c */ |
a613fa16 | 200 | extern const struct rpc_program nfs_program; |
6b13168b | 201 | extern void nfs_clients_init(struct net *net); |
10b7a70c | 202 | extern void nfs_clients_exit(struct net *net); |
6663ee7f | 203 | extern struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *); |
5c6e5b60 | 204 | int nfs_create_rpc_client(struct nfs_client *, const struct nfs_client_initdata *, rpc_authflavor_t); |
7d38de3f | 205 | struct nfs_client *nfs_get_client(const struct nfs_client_initdata *); |
e5731131 | 206 | int nfs_probe_server(struct nfs_server *, struct nfs_fh *); |
fcf10398 | 207 | void nfs_server_insert_lists(struct nfs_server *); |
32e62b7c | 208 | void nfs_server_remove_lists(struct nfs_server *); |
a956beda | 209 | void nfs_init_timeout_values(struct rpc_timeout *to, int proto, int timeo, int retrans); |
fcf10398 BS |
210 | int nfs_init_server_rpcclient(struct nfs_server *, const struct rpc_timeout *t, |
211 | rpc_authflavor_t); | |
212 | struct nfs_server *nfs_alloc_server(void); | |
213 | void nfs_server_copy_userdata(struct nfs_server *, struct nfs_server *); | |
54ceac45 | 214 | |
24c8dbbb | 215 | extern void nfs_put_client(struct nfs_client *); |
cdb7eced | 216 | extern void nfs_free_client(struct nfs_client *); |
28cd1b3f | 217 | extern struct nfs_client *nfs4_find_client_ident(struct net *, int); |
c36fca52 | 218 | extern struct nfs_client * |
c7add9a9 | 219 | nfs4_find_client_sessionid(struct net *, const struct sockaddr *, |
459de2ed | 220 | struct nfs4_sessionid *, u32); |
62a55d08 | 221 | extern struct nfs_server *nfs_create_server(struct fs_context *); |
01dde76e | 222 | extern void nfs4_server_set_init_caps(struct nfs_server *); |
62a55d08 SM |
223 | extern struct nfs_server *nfs4_create_server(struct fs_context *); |
224 | extern struct nfs_server *nfs4_create_referral_server(struct fs_context *); | |
32e62b7c | 225 | extern int nfs4_update_server(struct nfs_server *server, const char *hostname, |
cf0d7e7f | 226 | struct sockaddr_storage *sap, size_t salen, |
292f503c | 227 | struct net *net); |
54ceac45 DH |
228 | extern void nfs_free_server(struct nfs_server *server); |
229 | extern struct nfs_server *nfs_clone_server(struct nfs_server *, | |
230 | struct nfs_fh *, | |
7e6eb683 BS |
231 | struct nfs_fattr *, |
232 | rpc_authflavor_t); | |
a33e4b03 WAA |
233 | extern bool nfs_client_init_is_complete(const struct nfs_client *clp); |
234 | extern int nfs_client_init_status(const struct nfs_client *clp); | |
4697bd5e | 235 | extern int nfs_wait_client_init_complete(const struct nfs_client *clp); |
76db6d95 | 236 | extern void nfs_mark_client_ready(struct nfs_client *clp, int state); |
3fc75f12 | 237 | extern struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv, |
cf0d7e7f | 238 | const struct sockaddr_storage *ds_addr, |
98fc685a AA |
239 | int ds_addrlen, int ds_proto, |
240 | unsigned int ds_timeo, | |
064172f3 | 241 | unsigned int ds_retrans, |
7d38de3f | 242 | u32 minor_version); |
0e20162e AA |
243 | extern struct rpc_clnt *nfs4_find_or_create_ds_client(struct nfs_client *, |
244 | struct inode *); | |
b224f7cb | 245 | extern struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv, |
cf0d7e7f | 246 | const struct sockaddr_storage *ds_addr, int ds_addrlen, |
1a04c6e1 | 247 | int ds_proto, unsigned int ds_timeo, |
7d38de3f | 248 | unsigned int ds_retrans); |
6aaca566 DH |
249 | #ifdef CONFIG_PROC_FS |
250 | extern int __init nfs_fs_proc_init(void); | |
251 | extern void nfs_fs_proc_exit(void); | |
65b38851 EB |
252 | extern int nfs_fs_proc_net_init(struct net *net); |
253 | extern void nfs_fs_proc_net_exit(struct net *net); | |
6aaca566 | 254 | #else |
65b38851 EB |
255 | static inline int nfs_fs_proc_net_init(struct net *net) |
256 | { | |
257 | return 0; | |
258 | } | |
259 | static inline void nfs_fs_proc_net_exit(struct net *net) | |
260 | { | |
261 | } | |
6aaca566 DH |
262 | static inline int nfs_fs_proc_init(void) |
263 | { | |
264 | return 0; | |
265 | } | |
266 | static inline void nfs_fs_proc_exit(void) | |
267 | { | |
268 | } | |
269 | #endif | |
24c8dbbb | 270 | |
f7b422b1 | 271 | /* callback_xdr.c */ |
e9679189 CH |
272 | extern const struct svc_version nfs4_callback_version1; |
273 | extern const struct svc_version nfs4_callback_version4; | |
f7b422b1 | 274 | |
f2aedb71 DH |
275 | /* fs_context.c */ |
276 | extern struct file_system_type nfs_fs_type; | |
9954bf92 | 277 | |
f7b422b1 DH |
278 | /* pagelist.c */ |
279 | extern int __init nfs_init_nfspagecache(void); | |
266bee88 | 280 | extern void nfs_destroy_nfspagecache(void); |
f7b422b1 | 281 | extern int __init nfs_init_readpagecache(void); |
266bee88 | 282 | extern void nfs_destroy_readpagecache(void); |
f7b422b1 | 283 | extern int __init nfs_init_writepagecache(void); |
266bee88 | 284 | extern void nfs_destroy_writepagecache(void); |
f7b422b1 | 285 | |
f7b422b1 | 286 | extern int __init nfs_init_directcache(void); |
266bee88 | 287 | extern void nfs_destroy_directcache(void); |
4db6e0b7 FI |
288 | extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, |
289 | struct nfs_pgio_header *hdr, | |
290 | void (*release)(struct nfs_pgio_header *hdr)); | |
291 | void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos); | |
210c7c17 | 292 | int nfs_iocounter_wait(struct nfs_lock_context *l_ctx); |
577b4232 | 293 | |
41d8d5b7 | 294 | extern const struct nfs_pageio_ops nfs_pgio_rw_ops; |
1e7f3a48 WAA |
295 | struct nfs_pgio_header *nfs_pgio_header_alloc(const struct nfs_rw_ops *); |
296 | void nfs_pgio_header_free(struct nfs_pgio_header *); | |
ef2c488c | 297 | int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); |
46a5ab47 | 298 | int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr, |
a52458b4 | 299 | const struct cred *cred, const struct nfs_rpc_ops *rpc_ops, |
46a5ab47 | 300 | const struct rpc_call_ops *call_ops, int how, int flags); |
d4581383 | 301 | void nfs_free_request(struct nfs_page *req); |
48d635f1 PT |
302 | struct nfs_pgio_mirror * |
303 | nfs_pgio_current_mirror(struct nfs_pageio_descriptor *desc); | |
00bfa30a | 304 | |
138a2935 TM |
305 | static inline bool nfs_match_open_context(const struct nfs_open_context *ctx1, |
306 | const struct nfs_open_context *ctx2) | |
307 | { | |
a52458b4 | 308 | return cred_fscmp(ctx1->cred, ctx2->cred) == 0 && ctx1->state == ctx2->state; |
138a2935 TM |
309 | } |
310 | ||
f7b422b1 | 311 | /* nfs2xdr.c */ |
499b4988 | 312 | extern const struct rpc_procinfo nfs_procedures[]; |
573c4e1e | 313 | extern int nfs2_decode_dirent(struct xdr_stream *, |
a7a3b1e9 | 314 | struct nfs_entry *, bool); |
f7b422b1 DH |
315 | |
316 | /* nfs3xdr.c */ | |
499b4988 | 317 | extern const struct rpc_procinfo nfs3_procedures[]; |
573c4e1e | 318 | extern int nfs3_decode_dirent(struct xdr_stream *, |
a7a3b1e9 | 319 | struct nfs_entry *, bool); |
f7b422b1 DH |
320 | |
321 | /* nfs4xdr.c */ | |
89d77c8f | 322 | #if IS_ENABLED(CONFIG_NFS_V4) |
573c4e1e | 323 | extern int nfs4_decode_dirent(struct xdr_stream *, |
a7a3b1e9 | 324 | struct nfs_entry *, bool); |
7d4e2747 | 325 | #endif |
2449ea2e AB |
326 | #ifdef CONFIG_NFS_V4_1 |
327 | extern const u32 nfs41_maxread_overhead; | |
328 | extern const u32 nfs41_maxwrite_overhead; | |
f1c097be | 329 | extern const u32 nfs41_maxgetdevinfo_overhead; |
2449ea2e | 330 | #endif |
f7b422b1 DH |
331 | |
332 | /* nfs4proc.c */ | |
89d77c8f | 333 | #if IS_ENABLED(CONFIG_NFS_V4) |
499b4988 | 334 | extern const struct rpc_procinfo nfs4_procedures[]; |
d75d5414 | 335 | #endif |
f7b422b1 | 336 | |
694e096f AS |
337 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
338 | extern struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags); | |
a49c2691 KM |
339 | static inline struct nfs4_label * |
340 | nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src) | |
341 | { | |
342 | if (!dst || !src) | |
343 | return NULL; | |
344 | ||
345 | if (src->len > NFS4_MAXLABELLEN) | |
346 | return NULL; | |
347 | ||
348 | dst->lfs = src->lfs; | |
349 | dst->pi = src->pi; | |
350 | dst->len = src->len; | |
351 | memcpy(dst->label, src->label, src->len); | |
352 | ||
353 | return dst; | |
354 | } | |
fd1defc2 TM |
355 | |
356 | static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) | |
357 | { | |
358 | if (nfs_server_capable(&nfsi->vfs_inode, NFS_CAP_SECURITY_LABEL)) | |
359 | nfsi->cache_validity |= NFS_INO_INVALID_LABEL; | |
360 | } | |
694e096f AS |
361 | #else |
362 | static inline struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) { return NULL; } | |
fd1defc2 TM |
363 | static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) |
364 | { | |
365 | } | |
a49c2691 KM |
366 | static inline struct nfs4_label * |
367 | nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src) | |
368 | { | |
369 | return NULL; | |
370 | } | |
694e096f AS |
371 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ |
372 | ||
7fe5c398 TM |
373 | /* proc.c */ |
374 | void nfs_close_context(struct nfs_open_context *ctx, int is_sync); | |
8cab4c39 | 375 | extern struct nfs_client *nfs_init_client(struct nfs_client *clp, |
5c6e5b60 | 376 | const struct nfs_client_initdata *); |
7fe5c398 | 377 | |
979df72e | 378 | /* dir.c */ |
230bc98f TM |
379 | extern void nfs_readdir_record_entry_cache_hit(struct inode *dir); |
380 | extern void nfs_readdir_record_entry_cache_miss(struct inode *dir); | |
1ab6c499 DC |
381 | extern unsigned long nfs_access_cache_count(struct shrinker *shrink, |
382 | struct shrink_control *sc); | |
383 | extern unsigned long nfs_access_cache_scan(struct shrinker *shrink, | |
384 | struct shrink_control *sc); | |
597d9289 | 385 | struct dentry *nfs_lookup(struct inode *, struct dentry *, unsigned int); |
00bdadc7 | 386 | void nfs_d_prune_case_insensitive_aliases(struct inode *inode); |
6c960e68 | 387 | int nfs_create(struct mnt_idmap *, struct inode *, struct dentry *, |
549c7297 | 388 | umode_t, bool); |
c54bd91e | 389 | int nfs_mkdir(struct mnt_idmap *, struct inode *, struct dentry *, |
549c7297 | 390 | umode_t); |
597d9289 BS |
391 | int nfs_rmdir(struct inode *, struct dentry *); |
392 | int nfs_unlink(struct inode *, struct dentry *); | |
7a77db95 | 393 | int nfs_symlink(struct mnt_idmap *, struct inode *, struct dentry *, |
549c7297 | 394 | const char *); |
597d9289 | 395 | int nfs_link(struct dentry *, struct inode *, struct dentry *); |
5ebb29be | 396 | int nfs_mknod(struct mnt_idmap *, struct inode *, struct dentry *, umode_t, |
549c7297 | 397 | dev_t); |
e18275ae | 398 | int nfs_rename(struct mnt_idmap *, struct inode *, struct dentry *, |
1cd66c93 | 399 | struct inode *, struct dentry *, unsigned int); |
979df72e | 400 | |
84631f84 TM |
401 | #ifdef CONFIG_NFS_V4_2 |
402 | static inline __u32 nfs_access_xattr_mask(const struct nfs_server *server) | |
403 | { | |
404 | if (!(server->caps & NFS_CAP_XATTR)) | |
405 | return 0; | |
406 | return NFS4_ACCESS_XAREAD | NFS4_ACCESS_XAWRITE | NFS4_ACCESS_XALIST; | |
407 | } | |
408 | #else | |
409 | static inline __u32 nfs_access_xattr_mask(const struct nfs_server *server) | |
410 | { | |
411 | return 0; | |
412 | } | |
413 | #endif | |
414 | ||
ce4ef7c0 | 415 | /* file.c */ |
4ff79bc7 | 416 | int nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); |
ce4ef7c0 | 417 | loff_t nfs_file_llseek(struct file *, loff_t, int); |
3aa2d199 | 418 | ssize_t nfs_file_read(struct kiocb *, struct iov_iter *); |
ce4ef7c0 | 419 | int nfs_file_mmap(struct file *, struct vm_area_struct *); |
edaf4369 | 420 | ssize_t nfs_file_write(struct kiocb *, struct iov_iter *); |
ce4ef7c0 BS |
421 | int nfs_file_release(struct inode *, struct file *); |
422 | int nfs_lock(struct file *, int, struct file_lock *); | |
423 | int nfs_flock(struct file *, int, struct file_lock *); | |
ce4ef7c0 | 424 | int nfs_check_flags(int); |
ce4ef7c0 | 425 | |
f7b422b1 | 426 | /* inode.c */ |
5746006f | 427 | extern struct workqueue_struct *nfsiod_workqueue; |
f7b422b1 | 428 | extern struct inode *nfs_alloc_inode(struct super_block *sb); |
ca1a199e | 429 | extern void nfs_free_inode(struct inode *); |
a9185b41 | 430 | extern int nfs_write_inode(struct inode *, struct writeback_control *); |
eed99357 | 431 | extern int nfs_drop_inode(struct inode *); |
19d87ca3 | 432 | extern void nfs_clear_inode(struct inode *); |
b57922d9 | 433 | extern void nfs_evict_inode(struct inode *); |
fd6d3fee TM |
434 | extern void nfs_zap_acl_cache(struct inode *inode); |
435 | extern void nfs_set_cache_invalid(struct inode *inode, unsigned long flags); | |
61540bf6 | 436 | extern bool nfs_check_cache_invalid(struct inode *, unsigned long); |
dfd01f02 | 437 | extern int nfs_wait_bit_killable(struct wait_bit_key *key, int mode); |
f7b422b1 DH |
438 | |
439 | /* super.c */ | |
6a74490d | 440 | extern const struct super_operations nfs_sops; |
4d4b69dd | 441 | bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t); |
f2aedb71 DH |
442 | int nfs_try_get_tree(struct fs_context *); |
443 | int nfs_get_tree_common(struct fs_context *); | |
fbdefd64 | 444 | void nfs_kill_super(struct super_block *); |
4ebd9ab3 | 445 | |
f7b422b1 | 446 | extern struct rpc_stat nfs_rpcstat; |
4ebd9ab3 | 447 | |
f7b422b1 DH |
448 | extern int __init register_nfs_fs(void); |
449 | extern void __exit unregister_nfs_fs(void); | |
ea7c38fe | 450 | extern bool nfs_sb_active(struct super_block *sb); |
1daef0a8 | 451 | extern void nfs_sb_deactive(struct super_block *sb); |
3c9e502b TM |
452 | extern int nfs_client_for_each_server(struct nfs_client *clp, |
453 | int (*fn)(struct nfs_server *, void *), | |
454 | void *data); | |
000dbe0b DW |
455 | #ifdef CONFIG_NFS_FSCACHE |
456 | extern const struct netfs_request_ops nfs_netfs_ops; | |
457 | #endif | |
458 | ||
a5864c99 TM |
459 | /* io.c */ |
460 | extern void nfs_start_io_read(struct inode *inode); | |
461 | extern void nfs_end_io_read(struct inode *inode); | |
462 | extern void nfs_start_io_write(struct inode *inode); | |
463 | extern void nfs_end_io_write(struct inode *inode); | |
464 | extern void nfs_start_io_direct(struct inode *inode); | |
465 | extern void nfs_end_io_direct(struct inode *inode); | |
466 | ||
651b0e70 TM |
467 | static inline bool nfs_file_io_is_buffered(struct nfs_inode *nfsi) |
468 | { | |
469 | return test_bit(NFS_INO_ODIRECT, &nfsi->flags) == 0; | |
470 | } | |
471 | ||
f7b422b1 | 472 | /* namespace.c */ |
97a54868 | 473 | #define NFS_PATH_CANONICAL 1 |
b514f872 | 474 | extern char *nfs_path(char **p, struct dentry *dentry, |
97a54868 | 475 | char *buffer, ssize_t buflen, unsigned flags); |
36d43a43 | 476 | extern struct vfsmount *nfs_d_automount(struct path *path); |
f2aedb71 DH |
477 | int nfs_submount(struct fs_context *, struct nfs_server *); |
478 | int nfs_do_submount(struct fs_context *); | |
f7b422b1 | 479 | |
54ceac45 | 480 | /* getroot.c */ |
62a55d08 | 481 | extern int nfs_get_root(struct super_block *s, struct fs_context *fc); |
89d77c8f | 482 | #if IS_ENABLED(CONFIG_NFS_V4) |
5e6b1990 | 483 | extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool); |
7d4e2747 | 484 | #endif |
f7b422b1 | 485 | |
061ae2ed | 486 | struct nfs_pgio_completion_ops; |
f11c88af | 487 | /* read.c */ |
000dbe0b | 488 | extern const struct nfs_pgio_completion_ops nfs_async_read_completion_ops; |
584aa810 | 489 | extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, |
fab5fc25 | 490 | struct inode *inode, bool force_mds, |
584aa810 | 491 | const struct nfs_pgio_completion_ops *compl_ops); |
000dbe0b DW |
492 | extern int nfs_read_add_folio(struct nfs_pageio_descriptor *pgio, |
493 | struct nfs_open_context *ctx, | |
494 | struct folio *folio); | |
495 | extern void nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio); | |
f11c88af | 496 | extern void nfs_read_prepare(struct rpc_task *task, void *calldata); |
493292dd | 497 | extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); |
e885de1a | 498 | |
fbdefd64 | 499 | /* super.c */ |
fbdefd64 BS |
500 | void nfs_umount_begin(struct super_block *); |
501 | int nfs_statfs(struct dentry *, struct kstatfs *); | |
502 | int nfs_show_options(struct seq_file *, struct dentry *); | |
503 | int nfs_show_devname(struct seq_file *, struct dentry *); | |
504 | int nfs_show_path(struct seq_file *, struct dentry *); | |
505 | int nfs_show_stats(struct seq_file *, struct dentry *); | |
f2aedb71 | 506 | int nfs_reconfigure(struct fs_context *); |
fbdefd64 | 507 | |
def6ed7e | 508 | /* write.c */ |
1763da12 | 509 | extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, |
a20c93e3 | 510 | struct inode *inode, int ioflags, bool force_mds, |
1763da12 | 511 | const struct nfs_pgio_completion_ops *compl_ops); |
dce81290 | 512 | extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); |
0b7c0153 | 513 | extern void nfs_commit_free(struct nfs_commit_data *p); |
0b7c0153 FI |
514 | extern void nfs_commit_prepare(struct rpc_task *task, void *calldata); |
515 | extern int nfs_initiate_commit(struct rpc_clnt *clnt, | |
516 | struct nfs_commit_data *data, | |
c36aae9a | 517 | const struct nfs_rpc_ops *nfs_ops, |
e0c2b380 | 518 | const struct rpc_call_ops *call_ops, |
9f0ec176 | 519 | int how, int flags); |
0b7c0153 | 520 | extern void nfs_init_commit(struct nfs_commit_data *data, |
e0c2b380 | 521 | struct list_head *head, |
f453a54a FI |
522 | struct pnfs_layout_segment *lseg, |
523 | struct nfs_commit_info *cinfo); | |
1763da12 FI |
524 | int nfs_scan_commit_list(struct list_head *src, struct list_head *dst, |
525 | struct nfs_commit_info *cinfo, int max); | |
ce59515c | 526 | unsigned long nfs_reqs_to_commit(struct nfs_commit_info *); |
1763da12 FI |
527 | int nfs_scan_commit(struct inode *inode, struct list_head *dst, |
528 | struct nfs_commit_info *cinfo); | |
529 | void nfs_mark_request_commit(struct nfs_page *req, | |
530 | struct pnfs_layout_segment *lseg, | |
b57ff130 WAA |
531 | struct nfs_commit_info *cinfo, |
532 | u32 ds_commit_idx); | |
c65e6254 | 533 | int nfs_write_need_commit(struct nfs_pgio_header *); |
a08a8cd3 | 534 | void nfs_writeback_update_inode(struct nfs_pgio_header *hdr); |
1763da12 FI |
535 | int nfs_generic_commit_list(struct inode *inode, struct list_head *head, |
536 | int how, struct nfs_commit_info *cinfo); | |
e0c2b380 | 537 | void nfs_retry_commit(struct list_head *page_list, |
ea2cf228 | 538 | struct pnfs_layout_segment *lseg, |
b57ff130 WAA |
539 | struct nfs_commit_info *cinfo, |
540 | u32 ds_commit_idx); | |
0b7c0153 | 541 | void nfs_commitdata_release(struct nfs_commit_data *data); |
6272dcc6 | 542 | void nfs_request_add_commit_list(struct nfs_page *req, |
ea2cf228 | 543 | struct nfs_commit_info *cinfo); |
86d80f97 TM |
544 | void nfs_request_add_commit_list_locked(struct nfs_page *req, |
545 | struct list_head *dst, | |
546 | struct nfs_commit_info *cinfo); | |
ea2cf228 FI |
547 | void nfs_request_remove_commit_list(struct nfs_page *req, |
548 | struct nfs_commit_info *cinfo); | |
549 | void nfs_init_cinfo(struct nfs_commit_info *cinfo, | |
550 | struct inode *inode, | |
551 | struct nfs_direct_req *dreq); | |
dc24826b | 552 | int nfs_key_timeout_notify(struct file *filp, struct inode *inode); |
ce52914e | 553 | bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx, struct inode *inode); |
a7d42ddb | 554 | void nfs_pageio_stop_mirroring(struct nfs_pageio_descriptor *pgio); |
e0c2b380 | 555 | |
837bb1d7 TM |
556 | int nfs_filemap_write_and_wait_range(struct address_space *mapping, |
557 | loff_t lstart, loff_t lend); | |
558 | ||
a5314a74 | 559 | #ifdef CONFIG_NFS_V4_1 |
e3b9f7e6 TM |
560 | static inline void |
561 | pnfs_bucket_clear_pnfs_ds_commit_verifiers(struct pnfs_commit_bucket *buckets, | |
562 | unsigned int nbuckets) | |
563 | { | |
564 | unsigned int i; | |
565 | ||
566 | for (i = 0; i < nbuckets; i++) | |
567 | buckets[i].direct_verf.committed = NFS_INVALID_STABLE_HOW; | |
568 | } | |
a5314a74 TM |
569 | static inline |
570 | void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo) | |
571 | { | |
e3b9f7e6 TM |
572 | struct pnfs_commit_array *array; |
573 | ||
a9901899 TM |
574 | rcu_read_lock(); |
575 | list_for_each_entry_rcu(array, &cinfo->commits, cinfo_list) | |
e3b9f7e6 TM |
576 | pnfs_bucket_clear_pnfs_ds_commit_verifiers(array->buckets, |
577 | array->nbuckets); | |
a9901899 | 578 | rcu_read_unlock(); |
a5314a74 TM |
579 | } |
580 | #else | |
581 | static inline | |
582 | void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo) | |
583 | { | |
584 | } | |
585 | #endif | |
586 | ||
074cc1de | 587 | #ifdef CONFIG_MIGRATION |
4ae84a80 MWO |
588 | int nfs_migrate_folio(struct address_space *, struct folio *dst, |
589 | struct folio *src, enum migrate_mode); | |
590 | #else | |
591 | #define nfs_migrate_folio NULL | |
074cc1de | 592 | #endif |
def6ed7e | 593 | |
8fc3c386 TM |
594 | static inline int |
595 | nfs_write_verifier_cmp(const struct nfs_write_verifier *v1, | |
596 | const struct nfs_write_verifier *v2) | |
597 | { | |
598 | return memcmp(v1->data, v2->data, sizeof(v1->data)); | |
599 | } | |
600 | ||
1f28476d TM |
601 | static inline bool |
602 | nfs_write_match_verf(const struct nfs_writeverf *verf, | |
603 | struct nfs_page *req) | |
604 | { | |
605 | return verf->committed > NFS_UNSTABLE && | |
606 | !nfs_write_verifier_cmp(&req->wb_verf, &verf->verifier); | |
607 | } | |
608 | ||
515dcdcd TM |
609 | static inline gfp_t nfs_io_gfp_mask(void) |
610 | { | |
611 | if (current->flags & PF_WQ_WORKER) | |
612 | return GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN; | |
613 | return GFP_KERNEL; | |
614 | } | |
615 | ||
d7a51186 AS |
616 | /* |
617 | * Special version of should_remove_suid() that ignores capabilities. | |
618 | */ | |
619 | static inline int nfs_should_remove_suid(const struct inode *inode) | |
620 | { | |
621 | umode_t mode = inode->i_mode; | |
622 | int kill = 0; | |
623 | ||
624 | /* suid always must be killed */ | |
625 | if (unlikely(mode & S_ISUID)) | |
626 | kill = ATTR_KILL_SUID; | |
627 | ||
628 | /* | |
629 | * sgid without any exec bits is just a mandatory locking mark; leave | |
630 | * it alone. If some exec bits are set, it's a real sgid; kill it. | |
631 | */ | |
632 | if (unlikely((mode & S_ISGID) && (mode & S_IXGRP))) | |
633 | kill |= ATTR_KILL_SGID; | |
634 | ||
635 | if (unlikely(kill && S_ISREG(mode))) | |
636 | return kill; | |
637 | ||
638 | return 0; | |
639 | } | |
640 | ||
0e862a40 JL |
641 | /* unlink.c */ |
642 | extern struct rpc_task * | |
643 | nfs_async_rename(struct inode *old_dir, struct inode *new_dir, | |
644 | struct dentry *old_dentry, struct dentry *new_dentry, | |
645 | void (*complete)(struct rpc_task *, struct nfs_renamedata *)); | |
646 | extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry); | |
647 | ||
1763da12 FI |
648 | /* direct.c */ |
649 | void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, | |
650 | struct nfs_direct_req *dreq); | |
6296556f | 651 | extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq); |
1763da12 | 652 | |
cccef3b9 | 653 | /* nfs4proc.c */ |
8cab4c39 | 654 | extern struct nfs_client *nfs4_init_client(struct nfs_client *clp, |
5c6e5b60 | 655 | const struct nfs_client_initdata *); |
05f4c350 CL |
656 | extern int nfs40_walk_client_list(struct nfs_client *clp, |
657 | struct nfs_client **result, | |
a52458b4 | 658 | const struct cred *cred); |
05f4c350 CL |
659 | extern int nfs41_walk_client_list(struct nfs_client *clp, |
660 | struct nfs_client **result, | |
a52458b4 | 661 | const struct cred *cred); |
10e037d1 S |
662 | extern void nfs4_test_session_trunk(struct rpc_clnt *clnt, |
663 | struct rpc_xprt *xprt, | |
664 | void *data); | |
cccef3b9 | 665 | |
ea7c38fe TM |
666 | static inline struct inode *nfs_igrab_and_active(struct inode *inode) |
667 | { | |
896567ee TM |
668 | struct super_block *sb = inode->i_sb; |
669 | ||
670 | if (sb && nfs_sb_active(sb)) { | |
671 | if (igrab(inode)) | |
672 | return inode; | |
673 | nfs_sb_deactive(sb); | |
ea7c38fe | 674 | } |
896567ee | 675 | return NULL; |
ea7c38fe TM |
676 | } |
677 | ||
678 | static inline void nfs_iput_and_deactive(struct inode *inode) | |
679 | { | |
680 | if (inode != NULL) { | |
681 | struct super_block *sb = inode->i_sb; | |
682 | ||
683 | iput(inode); | |
684 | nfs_sb_deactive(sb); | |
685 | } | |
686 | } | |
687 | ||
f7b422b1 DH |
688 | /* |
689 | * Determine the device name as a string | |
690 | */ | |
b514f872 | 691 | static inline char *nfs_devname(struct dentry *dentry, |
54ceac45 | 692 | char *buffer, ssize_t buflen) |
f7b422b1 | 693 | { |
b514f872 | 694 | char *dummy; |
97a54868 | 695 | return nfs_path(&dummy, dentry, buffer, buflen, NFS_PATH_CANONICAL); |
f7b422b1 DH |
696 | } |
697 | ||
698 | /* | |
699 | * Determine the actual block size (and log2 thereof) | |
700 | */ | |
701 | static inline | |
702 | unsigned long nfs_block_bits(unsigned long bsize, unsigned char *nrbitsp) | |
703 | { | |
704 | /* make sure blocksize is a power of two */ | |
705 | if ((bsize & (bsize - 1)) || nrbitsp) { | |
706 | unsigned char nrbits; | |
707 | ||
708 | for (nrbits = 31; nrbits && !(bsize & (1 << nrbits)); nrbits--) | |
709 | ; | |
710 | bsize = 1 << nrbits; | |
711 | if (nrbitsp) | |
712 | *nrbitsp = nrbits; | |
713 | } | |
714 | ||
715 | return bsize; | |
716 | } | |
717 | ||
718 | /* | |
719 | * Calculate the number of 512byte blocks used. | |
720 | */ | |
9eaa67c6 | 721 | static inline blkcnt_t nfs_calc_block_size(u64 tsize) |
f7b422b1 | 722 | { |
9eaa67c6 | 723 | blkcnt_t used = (tsize + 511) >> 9; |
f7b422b1 DH |
724 | return (used > ULONG_MAX) ? ULONG_MAX : used; |
725 | } | |
726 | ||
727 | /* | |
728 | * Compute and set NFS server blocksize | |
729 | */ | |
730 | static inline | |
731 | unsigned long nfs_block_size(unsigned long bsize, unsigned char *nrbitsp) | |
732 | { | |
733 | if (bsize < NFS_MIN_FILE_IO_SIZE) | |
734 | bsize = NFS_DEF_FILE_IO_SIZE; | |
735 | else if (bsize >= NFS_MAX_FILE_IO_SIZE) | |
736 | bsize = NFS_MAX_FILE_IO_SIZE; | |
737 | ||
738 | return nfs_block_bits(bsize, nrbitsp); | |
739 | } | |
740 | ||
940261a1 AS |
741 | /* |
742 | * Compute and set NFS server rsize / wsize | |
743 | */ | |
744 | static inline | |
745 | unsigned long nfs_io_size(unsigned long iosize, enum xprt_transports proto) | |
746 | { | |
747 | if (iosize < NFS_MIN_FILE_IO_SIZE) | |
748 | iosize = NFS_DEF_FILE_IO_SIZE; | |
749 | else if (iosize >= NFS_MAX_FILE_IO_SIZE) | |
750 | iosize = NFS_MAX_FILE_IO_SIZE; | |
940261a1 | 751 | |
a60214c2 | 752 | if (proto == XPRT_TRANSPORT_UDP || iosize < PAGE_SIZE) |
940261a1 | 753 | return nfs_block_bits(iosize, NULL); |
a60214c2 | 754 | return iosize & PAGE_MASK; |
940261a1 AS |
755 | } |
756 | ||
f7b422b1 DH |
757 | /* |
758 | * Determine the maximum file size for a superblock | |
759 | */ | |
760 | static inline | |
761 | void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize) | |
762 | { | |
763 | sb->s_maxbytes = (loff_t)maxfilesize; | |
764 | if (sb->s_maxbytes > MAX_LFS_FILESIZE || sb->s_maxbytes <= 0) | |
765 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
766 | } | |
49a70f27 | 767 | |
d15bc38d | 768 | /* |
8d92890b N |
769 | * Record the page as unstable (an extra writeback period) and mark its |
770 | * inode as dirty. | |
d15bc38d | 771 | */ |
0c493b5c TM |
772 | static inline void nfs_folio_mark_unstable(struct folio *folio, |
773 | struct nfs_commit_info *cinfo) | |
d15bc38d | 774 | { |
0c493b5c TM |
775 | if (folio && !cinfo->dreq) { |
776 | struct inode *inode = folio_file_mapping(folio)->host; | |
777 | long nr = folio_nr_pages(folio); | |
d15bc38d | 778 | |
8d92890b N |
779 | /* This page is really still in write-back - just that the |
780 | * writeback is happening on the server now. | |
781 | */ | |
0c493b5c TM |
782 | node_stat_mod_folio(folio, NR_WRITEBACK, nr); |
783 | wb_stat_mod(&inode_to_bdi(inode)->wb, WB_WRITEBACK, nr); | |
86d80f97 TM |
784 | __mark_inode_dirty(inode, I_DIRTY_DATASYNC); |
785 | } | |
d15bc38d TH |
786 | } |
787 | ||
49a70f27 TM |
788 | /* |
789 | * Determine the number of bytes of data the page contains | |
790 | */ | |
791 | static inline | |
792 | unsigned int nfs_page_length(struct page *page) | |
793 | { | |
d56b4ddf | 794 | loff_t i_size = i_size_read(page_file_mapping(page)->host); |
49a70f27 TM |
795 | |
796 | if (i_size > 0) { | |
8cd79788 | 797 | pgoff_t index = page_index(page); |
09cbfeaf | 798 | pgoff_t end_index = (i_size - 1) >> PAGE_SHIFT; |
8cd79788 | 799 | if (index < end_index) |
09cbfeaf | 800 | return PAGE_SIZE; |
8cd79788 | 801 | if (index == end_index) |
09cbfeaf | 802 | return ((i_size - 1) & ~PAGE_MASK) + 1; |
49a70f27 TM |
803 | } |
804 | return 0; | |
805 | } | |
8d5658c9 | 806 | |
ab75bff1 TM |
807 | /* |
808 | * Determine the number of bytes of data the page contains | |
809 | */ | |
810 | static inline size_t nfs_folio_length(struct folio *folio) | |
811 | { | |
812 | loff_t i_size = i_size_read(folio_file_mapping(folio)->host); | |
813 | ||
814 | if (i_size > 0) { | |
815 | pgoff_t index = folio_index(folio) >> folio_order(folio); | |
816 | pgoff_t end_index = (i_size - 1) >> folio_shift(folio); | |
817 | if (index < end_index) | |
818 | return folio_size(folio); | |
819 | if (index == end_index) | |
820 | return offset_in_folio(folio, i_size - 1) + 1; | |
821 | } | |
822 | return 0; | |
823 | } | |
824 | ||
0b26a0bf TM |
825 | /* |
826 | * Convert a umode to a dirent->d_type | |
827 | */ | |
828 | static inline | |
829 | unsigned char nfs_umode_to_dtype(umode_t mode) | |
830 | { | |
831 | return (mode >> 12) & 15; | |
832 | } | |
833 | ||
8d5658c9 TM |
834 | /* |
835 | * Determine the number of pages in an array of length 'len' and | |
836 | * with a base offset of 'base' | |
837 | */ | |
eb9f2a5a | 838 | static inline unsigned int nfs_page_array_len(unsigned int base, size_t len) |
8d5658c9 | 839 | { |
eb9f2a5a TM |
840 | return ((unsigned long)len + (unsigned long)base + PAGE_SIZE - 1) >> |
841 | PAGE_SHIFT; | |
8d5658c9 | 842 | } |
0110ee15 | 843 | |
3a1556e8 | 844 | /* |
ae08483c | 845 | * Convert a struct timespec64 into a 64-bit change attribute |
3a1556e8 | 846 | * |
ae08483c | 847 | * This does approximately the same thing as timespec64_to_ns(), |
3a1556e8 TM |
848 | * but for calculation efficiency, we multiply the seconds by |
849 | * 1024*1024*1024. | |
850 | */ | |
851 | static inline | |
e86d5a02 | 852 | u64 nfs_timespec_to_change_attr(const struct timespec64 *ts) |
3a1556e8 TM |
853 | { |
854 | return ((u64)ts->tv_sec << 30) + ts->tv_nsec; | |
855 | } | |
1264a2f0 TM |
856 | |
857 | #ifdef CONFIG_CRC32 | |
48c9579a OK |
858 | static inline u32 nfs_stateid_hash(const nfs4_stateid *stateid) |
859 | { | |
860 | return ~crc32_le(0xFFFFFFFF, &stateid->other[0], | |
861 | NFS4_STATEID_OTHER_SIZE); | |
862 | } | |
1264a2f0 | 863 | #else |
48c9579a OK |
864 | static inline u32 nfs_stateid_hash(nfs4_stateid *stateid) |
865 | { | |
866 | return 0; | |
867 | } | |
1264a2f0 | 868 | #endif |
0bcbf039 PT |
869 | |
870 | static inline bool nfs_error_is_fatal(int err) | |
871 | { | |
872 | switch (err) { | |
873 | case -ERESTARTSYS: | |
7dc58ca5 | 874 | case -EINTR: |
54551d85 TM |
875 | case -EACCES: |
876 | case -EDQUOT: | |
877 | case -EFBIG: | |
0bcbf039 PT |
878 | case -EIO: |
879 | case -ENOSPC: | |
880 | case -EROFS: | |
54551d85 | 881 | case -ESTALE: |
0bcbf039 | 882 | case -E2BIG: |
2dc23aff | 883 | case -ENOMEM: |
11982a7c | 884 | case -ETIMEDOUT: |
0bcbf039 PT |
885 | return true; |
886 | default: | |
887 | return false; | |
888 | } | |
889 | } | |
bf4b4905 | 890 | |
8f54c7a4 TM |
891 | static inline bool nfs_error_is_fatal_on_server(int err) |
892 | { | |
893 | switch (err) { | |
894 | case 0: | |
895 | case -ERESTARTSYS: | |
896 | case -EINTR: | |
45228440 | 897 | case -ENOMEM: |
8f54c7a4 TM |
898 | return false; |
899 | } | |
900 | return nfs_error_is_fatal(err); | |
901 | } | |
9954bf92 DH |
902 | |
903 | /* | |
904 | * Select between a default port value and a user-specified port value. | |
905 | * If a zero value is set, then autobind will be used. | |
906 | */ | |
cf0d7e7f | 907 | static inline void nfs_set_port(struct sockaddr_storage *sap, int *port, |
9954bf92 DH |
908 | const unsigned short default_port) |
909 | { | |
910 | if (*port == NFS_UNSPEC_PORT) | |
911 | *port = default_port; | |
912 | ||
cf0d7e7f | 913 | rpc_set_port((struct sockaddr *)sap, *port); |
9954bf92 | 914 | } |
8efc4bbe JL |
915 | |
916 | struct nfs_direct_req { | |
917 | struct kref kref; /* release manager */ | |
918 | ||
919 | /* I/O parameters */ | |
920 | struct nfs_open_context *ctx; /* file open context info */ | |
921 | struct nfs_lock_context *l_ctx; /* Lock context info */ | |
922 | struct kiocb * iocb; /* controlling i/o request */ | |
923 | struct inode * inode; /* target file of i/o */ | |
924 | ||
925 | /* completion state */ | |
926 | atomic_t io_count; /* i/os we're waiting for */ | |
927 | spinlock_t lock; /* protect completion state */ | |
928 | ||
929 | loff_t io_start; /* Start offset for I/O */ | |
930 | ssize_t count, /* bytes actually processed */ | |
931 | max_count, /* max expected count */ | |
932 | bytes_left, /* bytes left to be sent */ | |
933 | error; /* any reported error */ | |
934 | struct completion completion; /* wait for i/o completion */ | |
935 | ||
936 | /* commit state */ | |
937 | struct nfs_mds_commit_info mds_cinfo; /* Storage for cinfo */ | |
938 | struct pnfs_ds_commit_info ds_cinfo; /* Storage for cinfo */ | |
939 | struct work_struct work; | |
940 | int flags; | |
941 | /* for write */ | |
942 | #define NFS_ODIRECT_DO_COMMIT (1) /* an unstable reply was received */ | |
943 | #define NFS_ODIRECT_RESCHED_WRITES (2) /* write verification failed */ | |
944 | /* for read */ | |
945 | #define NFS_ODIRECT_SHOULD_DIRTY (3) /* dirty user-space page after read */ | |
946 | #define NFS_ODIRECT_DONE INT_MAX /* write verification failed */ | |
947 | }; |