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sunrpc: convert to time64_t for expiry
[linux-block.git] / fs / nfs / internal.h
CommitLineData
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		 16extern const struct export_operations nfs_export_ops;
17
54ceac45 18struct nfs_string;
f2aedb71 19struct nfs_pageio_descriptor;
54ceac45 20
7ebb9315
BS		 21static 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		 27static 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
a14017db
CL		 36/*
37 * Note: RFC 1813 doesn't limit the number of auth flavors that
38 * a server can return, so make something up.
39 */
40#define NFS_MAX_SECFLAVORS (12)
41
4cfd74fc
CL		 42/*
43 * Value used if the user did not specify a port value.
44 */
45#define NFS_UNSPEC_PORT (-1)
46
a956beda
TM		 47#define NFS_UNSPEC_RETRANS (UINT_MAX)
48#define NFS_UNSPEC_TIMEO (UINT_MAX)
49
56e4ebf8
BS		 50/*
51 * Maximum number of pages that readdir can use for creating
52 * a vmapped array of pages.
53 */
db531db9 54#define NFS_MAX_READDIR_PAGES 8
56e4ebf8 55
fcf10398
BS		 56struct nfs_client_initdata {
57 unsigned long init_flags;
5c6e5b60
TM		 58 const char *hostname; /* Hostname of the server */
59 const struct sockaddr *addr; /* Address of the server */
60 const char *nodename; /* Hostname of the client */
61 const char *ip_addr; /* IP address of the client */
fcf10398 62 size_t addrlen;
ab7017a3 63 struct nfs_subversion *nfs_mod;
fcf10398
BS		 64 int proto;
65 u32 minorversion;
6619079d 66 unsigned int nconnect;
fcf10398 67 struct net *net;
5c6e5b60 68 const struct rpc_timeout *timeparms;
1a58e8a0 69 const struct cred *cred;
fcf10398
BS		 70};
71
6b18eaa0
TT		 72/*
73 * In-kernel mount arguments
74 */
5eb005ca 75struct nfs_fs_context {
f2aedb71
DH		 76 bool internal;
77 bool skip_reconfig_option_check;
78 bool need_mount;
79 bool sloppy;
e558100f 80 unsigned int flags; /* NFS{,4}_MOUNT_* flags */
8cb7f74e
CL		 81 unsigned int rsize, wsize;
82 unsigned int timeo, retrans;
e558100f
DH		 83 unsigned int acregmin, acregmax;
84 unsigned int acdirmin, acdirmax;
8cb7f74e 85 unsigned int namlen;
b797cac7 86 unsigned int options;
6b18eaa0 87 unsigned int bsize;
a3f73c27
WAA		 88 struct nfs_auth_info auth_info;
89 rpc_authflavor_t selected_flavor;
6b18eaa0 90 char *client_address;
764302cc 91 unsigned int version;
3fd5be9e 92 unsigned int minorversion;
08734048 93 char *fscache_uniq;
f8ee01e3
DH		 94 unsigned short protofamily;
95 unsigned short mountfamily;
6b18eaa0
TT		 96
97 struct {
e558100f
DH		 98 union {
99 struct sockaddr address;
100 struct sockaddr_storage _address;
101 };
4c568017 102 size_t addrlen;
6b18eaa0 103 char *hostname;
78fa701f 104 u32 version;
4cfd74fc 105 int port;
78fa701f 106 unsigned short protocol;
6b18eaa0
TT		 107 } mount_server;
108
109 struct {
e558100f
DH		 110 union {
111 struct sockaddr address;
112 struct sockaddr_storage _address;
113 };
4c568017 114 size_t addrlen;
6b18eaa0
TT		 115 char *hostname;
116 char *export_path;
4cfd74fc 117 int port;
78fa701f 118 unsigned short protocol;
28cc5cd8 119 unsigned short nconnect;
f2aedb71 120 unsigned short export_path_len;
6b18eaa0 121 } nfs_server;
f9c3a380 122
62a55d08
SM		 123 struct nfs_fh *mntfh;
124 struct nfs_server *server;
125 struct nfs_subversion *nfs_mod;
126
127 /* Information for a cloned mount. */
128 struct nfs_clone_mount {
129 struct super_block *sb;
130 struct dentry *dentry;
131 struct nfs_fattr *fattr;
132 unsigned int inherited_bsize;
133 } clone_data;
6b18eaa0
TT		 134};
135
ce8866f0
SM		 136#define nfs_errorf(fc, fmt, ...) errorf(fc, fmt, ## __VA_ARGS__)
137#define nfs_invalf(fc, fmt, ...) invalf(fc, fmt, ## __VA_ARGS__)
138#define nfs_warnf(fc, fmt, ...) warnf(fc, fmt, ## __VA_ARGS__)
139
f2aedb71
DH		 140static inline struct nfs_fs_context *nfs_fc2context(const struct fs_context *fc)
141{
142 return fc->fs_private;
143}
144
146ec944 145/* mount_clnt.c */
c5d120f8
CL		 146struct nfs_mount_request {
147 struct sockaddr *sap;
148 size_t salen;
149 char *hostname;
150 char *dirpath;
151 u32 version;
152 unsigned short protocol;
153 struct nfs_fh *fh;
50a737f8 154 int noresvport;
8e02f6b9
CL		 155 unsigned int *auth_flav_len;
156 rpc_authflavor_t *auth_flavs;
6d59b8d5 157 struct net *net;
c5d120f8
CL		 158};
159
160extern int nfs_mount(struct nfs_mount_request *info);
0b524123 161extern void nfs_umount(const struct nfs_mount_request *info);
146ec944 162
24c8dbbb 163/* client.c */
a613fa16 164extern const struct rpc_program nfs_program;
6b13168b 165extern void nfs_clients_init(struct net *net);
10b7a70c 166extern void nfs_clients_exit(struct net *net);
6663ee7f 167extern struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *);
5c6e5b60 168int nfs_create_rpc_client(struct nfs_client *, const struct nfs_client_initdata *, rpc_authflavor_t);
7d38de3f 169struct nfs_client *nfs_get_client(const struct nfs_client_initdata *);
fcf10398
BS		 170int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *, struct nfs_fattr *);
171void nfs_server_insert_lists(struct nfs_server *);
32e62b7c 172void nfs_server_remove_lists(struct nfs_server *);
a956beda 173void nfs_init_timeout_values(struct rpc_timeout *to, int proto, int timeo, int retrans);
fcf10398
BS		 174int nfs_init_server_rpcclient(struct nfs_server *, const struct rpc_timeout *t,
175 rpc_authflavor_t);
176struct nfs_server *nfs_alloc_server(void);
177void nfs_server_copy_userdata(struct nfs_server *, struct nfs_server *);
54ceac45 178
24c8dbbb 179extern void nfs_put_client(struct nfs_client *);
cdb7eced 180extern void nfs_free_client(struct nfs_client *);
28cd1b3f 181extern struct nfs_client *nfs4_find_client_ident(struct net *, int);
c36fca52 182extern struct nfs_client *
c7add9a9 183nfs4_find_client_sessionid(struct net *, const struct sockaddr *,
459de2ed 184 struct nfs4_sessionid *, u32);
62a55d08
SM		 185extern struct nfs_server *nfs_create_server(struct fs_context *);
186extern struct nfs_server *nfs4_create_server(struct fs_context *);
187extern struct nfs_server *nfs4_create_referral_server(struct fs_context *);
32e62b7c 188extern int nfs4_update_server(struct nfs_server *server, const char *hostname,
292f503c
TM		 189 struct sockaddr *sap, size_t salen,
190 struct net *net);
54ceac45
DH		 191extern void nfs_free_server(struct nfs_server *server);
192extern struct nfs_server *nfs_clone_server(struct nfs_server *,
193 struct nfs_fh *,
7e6eb683
BS		 194 struct nfs_fattr *,
195 rpc_authflavor_t);
a33e4b03
WAA		 196extern bool nfs_client_init_is_complete(const struct nfs_client *clp);
197extern int nfs_client_init_status(const struct nfs_client *clp);
4697bd5e 198extern int nfs_wait_client_init_complete(const struct nfs_client *clp);
76db6d95 199extern void nfs_mark_client_ready(struct nfs_client *clp, int state);
3fc75f12 200extern struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv,
d83217c1 201 const struct sockaddr *ds_addr,
98fc685a
AA		 202 int ds_addrlen, int ds_proto,
203 unsigned int ds_timeo,
064172f3 204 unsigned int ds_retrans,
7d38de3f 205 u32 minor_version);
0e20162e
AA		 206extern struct rpc_clnt *nfs4_find_or_create_ds_client(struct nfs_client *,
207 struct inode *);
b224f7cb 208extern struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
1a04c6e1
PT		 209 const struct sockaddr *ds_addr, int ds_addrlen,
210 int ds_proto, unsigned int ds_timeo,
7d38de3f 211 unsigned int ds_retrans);
6aaca566
DH		 212#ifdef CONFIG_PROC_FS
213extern int __init nfs_fs_proc_init(void);
214extern void nfs_fs_proc_exit(void);
65b38851
EB		 215extern int nfs_fs_proc_net_init(struct net *net);
216extern void nfs_fs_proc_net_exit(struct net *net);
6aaca566 217#else
65b38851
EB		 218static inline int nfs_fs_proc_net_init(struct net *net)
219{
220 return 0;
221}
222static inline void nfs_fs_proc_net_exit(struct net *net)
223{
224}
6aaca566
DH		 225static inline int nfs_fs_proc_init(void)
226{
227 return 0;
228}
229static inline void nfs_fs_proc_exit(void)
230{
231}
232#endif
24c8dbbb 233
f7b422b1 234/* callback_xdr.c */
e9679189
CH		 235extern const struct svc_version nfs4_callback_version1;
236extern const struct svc_version nfs4_callback_version4;
f7b422b1 237
f2aedb71
DH		 238/* fs_context.c */
239extern struct file_system_type nfs_fs_type;
9954bf92 240
f7b422b1
DH		 241/* pagelist.c */
242extern int __init nfs_init_nfspagecache(void);
266bee88 243extern void nfs_destroy_nfspagecache(void);
f7b422b1 244extern int __init nfs_init_readpagecache(void);
266bee88 245extern void nfs_destroy_readpagecache(void);
f7b422b1 246extern int __init nfs_init_writepagecache(void);
266bee88 247extern void nfs_destroy_writepagecache(void);
f7b422b1 248
f7b422b1 249extern int __init nfs_init_directcache(void);
266bee88 250extern void nfs_destroy_directcache(void);
4db6e0b7
FI		 251extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc,
252 struct nfs_pgio_header *hdr,
253 void (*release)(struct nfs_pgio_header *hdr));
254void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos);
210c7c17 255int nfs_iocounter_wait(struct nfs_lock_context *l_ctx);
577b4232 256
41d8d5b7 257extern const struct nfs_pageio_ops nfs_pgio_rw_ops;
1e7f3a48
WAA		 258struct nfs_pgio_header *nfs_pgio_header_alloc(const struct nfs_rw_ops *);
259void nfs_pgio_header_free(struct nfs_pgio_header *);
ef2c488c 260int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *);
46a5ab47 261int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr,
a52458b4 262 const struct cred *cred, const struct nfs_rpc_ops *rpc_ops,
46a5ab47 263 const struct rpc_call_ops *call_ops, int how, int flags);
d4581383 264void nfs_free_request(struct nfs_page *req);
48d635f1
PT		 265struct nfs_pgio_mirror *
266nfs_pgio_current_mirror(struct nfs_pageio_descriptor *desc);
00bfa30a 267
47af81f2
PT		 268static inline bool nfs_pgio_has_mirroring(struct nfs_pageio_descriptor *desc)
269{
270 WARN_ON_ONCE(desc->pg_mirror_count < 1);
271 return desc->pg_mirror_count > 1;
272}
273
138a2935
TM		 274static inline bool nfs_match_open_context(const struct nfs_open_context *ctx1,
275 const struct nfs_open_context *ctx2)
276{
a52458b4 277 return cred_fscmp(ctx1->cred, ctx2->cred) == 0 && ctx1->state == ctx2->state;
138a2935
TM		 278}
279
f7b422b1 280/* nfs2xdr.c */
499b4988 281extern const struct rpc_procinfo nfs_procedures[];
573c4e1e 282extern int nfs2_decode_dirent(struct xdr_stream *,
a7a3b1e9 283 struct nfs_entry *, bool);
f7b422b1
DH		 284
285/* nfs3xdr.c */
499b4988 286extern const struct rpc_procinfo nfs3_procedures[];
573c4e1e 287extern int nfs3_decode_dirent(struct xdr_stream *,
a7a3b1e9 288 struct nfs_entry *, bool);
f7b422b1
DH		 289
290/* nfs4xdr.c */
89d77c8f 291#if IS_ENABLED(CONFIG_NFS_V4)
573c4e1e 292extern int nfs4_decode_dirent(struct xdr_stream *,
a7a3b1e9 293 struct nfs_entry *, bool);
7d4e2747 294#endif
2449ea2e
AB		 295#ifdef CONFIG_NFS_V4_1
296extern const u32 nfs41_maxread_overhead;
297extern const u32 nfs41_maxwrite_overhead;
f1c097be 298extern const u32 nfs41_maxgetdevinfo_overhead;
2449ea2e 299#endif
f7b422b1
DH		 300
301/* nfs4proc.c */
89d77c8f 302#if IS_ENABLED(CONFIG_NFS_V4)
499b4988 303extern const struct rpc_procinfo nfs4_procedures[];
d75d5414 304#endif
f7b422b1 305
694e096f
AS		 306#ifdef CONFIG_NFS_V4_SECURITY_LABEL
307extern struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags);
a49c2691
KM		 308static inline struct nfs4_label *
309nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src)
310{
311 if (!dst || !src)
312 return NULL;
313
314 if (src->len > NFS4_MAXLABELLEN)
315 return NULL;
316
317 dst->lfs = src->lfs;
318 dst->pi = src->pi;
319 dst->len = src->len;
320 memcpy(dst->label, src->label, src->len);
321
322 return dst;
323}
694e096f
AS		 324static inline void nfs4_label_free(struct nfs4_label *label)
325{
326 if (label) {
327 kfree(label->label);
328 kfree(label);
329 }
330 return;
331}
fd1defc2
TM		 332
333static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi)
334{
335 if (nfs_server_capable(&nfsi->vfs_inode, NFS_CAP_SECURITY_LABEL))
336 nfsi->cache_validity |= NFS_INO_INVALID_LABEL;
337}
694e096f
AS		 338#else
339static inline struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) { return NULL; }
340static inline void nfs4_label_free(void *label) {}
fd1defc2
TM		 341static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi)
342{
343}
a49c2691
KM		 344static inline struct nfs4_label *
345nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src)
346{
347 return NULL;
348}
694e096f
AS		 349#endif /* CONFIG_NFS_V4_SECURITY_LABEL */
350
7fe5c398
TM		 351/* proc.c */
352void nfs_close_context(struct nfs_open_context *ctx, int is_sync);
8cab4c39 353extern struct nfs_client *nfs_init_client(struct nfs_client *clp,
5c6e5b60 354 const struct nfs_client_initdata *);
7fe5c398 355
979df72e 356/* dir.c */
1bcf4c5c 357extern void nfs_advise_use_readdirplus(struct inode *dir);
311324ad 358extern void nfs_force_use_readdirplus(struct inode *dir);
1ab6c499
DC		 359extern unsigned long nfs_access_cache_count(struct shrinker *shrink,
360 struct shrink_control *sc);
361extern unsigned long nfs_access_cache_scan(struct shrinker *shrink,
362 struct shrink_control *sc);
597d9289
BS		 363struct dentry *nfs_lookup(struct inode *, struct dentry *, unsigned int);
364int nfs_create(struct inode *, struct dentry *, umode_t, bool);
365int nfs_mkdir(struct inode *, struct dentry *, umode_t);
366int nfs_rmdir(struct inode *, struct dentry *);
367int nfs_unlink(struct inode *, struct dentry *);
368int nfs_symlink(struct inode *, struct dentry *, const char *);
369int nfs_link(struct dentry *, struct inode *, struct dentry *);
370int nfs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
1cd66c93
MS		 371int nfs_rename(struct inode *, struct dentry *,
372 struct inode *, struct dentry *, unsigned int);
979df72e 373
ce4ef7c0 374/* file.c */
4ff79bc7 375int nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync);
ce4ef7c0 376loff_t nfs_file_llseek(struct file *, loff_t, int);
3aa2d199 377ssize_t nfs_file_read(struct kiocb *, struct iov_iter *);
ce4ef7c0 378int nfs_file_mmap(struct file *, struct vm_area_struct *);
edaf4369 379ssize_t nfs_file_write(struct kiocb *, struct iov_iter *);
ce4ef7c0
BS		 380int nfs_file_release(struct inode *, struct file *);
381int nfs_lock(struct file *, int, struct file_lock *);
382int nfs_flock(struct file *, int, struct file_lock *);
ce4ef7c0 383int nfs_check_flags(int);
ce4ef7c0 384
f7b422b1 385/* inode.c */
5746006f 386extern struct workqueue_struct *nfsiod_workqueue;
f7b422b1 387extern struct inode *nfs_alloc_inode(struct super_block *sb);
ca1a199e 388extern void nfs_free_inode(struct inode *);
a9185b41 389extern int nfs_write_inode(struct inode *, struct writeback_control *);
eed99357 390extern int nfs_drop_inode(struct inode *);
19d87ca3 391extern void nfs_clear_inode(struct inode *);
b57922d9 392extern void nfs_evict_inode(struct inode *);
f41f7418 393void nfs_zap_acl_cache(struct inode *inode);
61540bf6 394extern bool nfs_check_cache_invalid(struct inode *, unsigned long);
dfd01f02 395extern int nfs_wait_bit_killable(struct wait_bit_key *key, int mode);
5e4def20 396extern int nfs_wait_atomic_killable(atomic_t *p, unsigned int mode);
f7b422b1
DH		 397
398/* super.c */
6a74490d 399extern const struct super_operations nfs_sops;
4d4b69dd 400bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t);
f2aedb71
DH		 401int nfs_try_get_tree(struct fs_context *);
402int nfs_get_tree_common(struct fs_context *);
fbdefd64 403void nfs_kill_super(struct super_block *);
4ebd9ab3 404
f7b422b1 405extern struct rpc_stat nfs_rpcstat;
4ebd9ab3 406
f7b422b1
DH		 407extern int __init register_nfs_fs(void);
408extern void __exit unregister_nfs_fs(void);
ea7c38fe 409extern bool nfs_sb_active(struct super_block *sb);
1daef0a8 410extern void nfs_sb_deactive(struct super_block *sb);
f7b422b1 411
a5864c99
TM		 412/* io.c */
413extern void nfs_start_io_read(struct inode *inode);
414extern void nfs_end_io_read(struct inode *inode);
415extern void nfs_start_io_write(struct inode *inode);
416extern void nfs_end_io_write(struct inode *inode);
417extern void nfs_start_io_direct(struct inode *inode);
418extern void nfs_end_io_direct(struct inode *inode);
419
651b0e70
TM		 420static inline bool nfs_file_io_is_buffered(struct nfs_inode *nfsi)
421{
422 return test_bit(NFS_INO_ODIRECT, &nfsi->flags) == 0;
423}
424
f7b422b1 425/* namespace.c */
97a54868 426#define NFS_PATH_CANONICAL 1
b514f872 427extern char *nfs_path(char **p, struct dentry *dentry,
97a54868 428 char *buffer, ssize_t buflen, unsigned flags);
36d43a43 429extern struct vfsmount *nfs_d_automount(struct path *path);
f2aedb71
DH		 430int nfs_submount(struct fs_context *, struct nfs_server *);
431int nfs_do_submount(struct fs_context *);
f7b422b1 432
54ceac45 433/* getroot.c */
62a55d08 434extern int nfs_get_root(struct super_block *s, struct fs_context *fc);
89d77c8f 435#if IS_ENABLED(CONFIG_NFS_V4)
5e6b1990 436extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool);
7d4e2747 437#endif
f7b422b1 438
061ae2ed 439struct nfs_pgio_completion_ops;
f11c88af 440/* read.c */
584aa810 441extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
fab5fc25 442 struct inode *inode, bool force_mds,
584aa810 443 const struct nfs_pgio_completion_ops *compl_ops);
f11c88af 444extern void nfs_read_prepare(struct rpc_task *task, void *calldata);
493292dd 445extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio);
e885de1a 446
fbdefd64 447/* super.c */
fbdefd64
BS		 448void nfs_umount_begin(struct super_block *);
449int nfs_statfs(struct dentry *, struct kstatfs *);
450int nfs_show_options(struct seq_file *, struct dentry *);
451int nfs_show_devname(struct seq_file *, struct dentry *);
452int nfs_show_path(struct seq_file *, struct dentry *);
453int nfs_show_stats(struct seq_file *, struct dentry *);
f2aedb71 454int nfs_reconfigure(struct fs_context *);
fbdefd64 455
def6ed7e 456/* write.c */
1763da12 457extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
a20c93e3 458 struct inode *inode, int ioflags, bool force_mds,
1763da12 459 const struct nfs_pgio_completion_ops *compl_ops);
dce81290 460extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio);
0b7c0153 461extern void nfs_commit_free(struct nfs_commit_data *p);
def6ed7e 462extern void nfs_write_prepare(struct rpc_task *task, void *calldata);
0b7c0153
FI		 463extern void nfs_commit_prepare(struct rpc_task *task, void *calldata);
464extern int nfs_initiate_commit(struct rpc_clnt *clnt,
465 struct nfs_commit_data *data,
c36aae9a 466 const struct nfs_rpc_ops *nfs_ops,
e0c2b380 467 const struct rpc_call_ops *call_ops,
9f0ec176 468 int how, int flags);
0b7c0153 469extern void nfs_init_commit(struct nfs_commit_data *data,
e0c2b380 470 struct list_head *head,
f453a54a
FI		 471 struct pnfs_layout_segment *lseg,
472 struct nfs_commit_info *cinfo);
1763da12
FI		 473int nfs_scan_commit_list(struct list_head *src, struct list_head *dst,
474 struct nfs_commit_info *cinfo, int max);
ce59515c 475unsigned long nfs_reqs_to_commit(struct nfs_commit_info *);
1763da12
FI		 476int nfs_scan_commit(struct inode *inode, struct list_head *dst,
477 struct nfs_commit_info *cinfo);
478void nfs_mark_request_commit(struct nfs_page *req,
479 struct pnfs_layout_segment *lseg,
b57ff130
WAA		 480 struct nfs_commit_info *cinfo,
481 u32 ds_commit_idx);
c65e6254 482int nfs_write_need_commit(struct nfs_pgio_header *);
a08a8cd3 483void nfs_writeback_update_inode(struct nfs_pgio_header *hdr);
1763da12
FI		 484int nfs_generic_commit_list(struct inode *inode, struct list_head *head,
485 int how, struct nfs_commit_info *cinfo);
e0c2b380 486void nfs_retry_commit(struct list_head *page_list,
ea2cf228 487 struct pnfs_layout_segment *lseg,
b57ff130
WAA		 488 struct nfs_commit_info *cinfo,
489 u32 ds_commit_idx);
0b7c0153 490void nfs_commitdata_release(struct nfs_commit_data *data);
6272dcc6 491void nfs_request_add_commit_list(struct nfs_page *req,
ea2cf228 492 struct nfs_commit_info *cinfo);
86d80f97
TM		 493void nfs_request_add_commit_list_locked(struct nfs_page *req,
494 struct list_head *dst,
495 struct nfs_commit_info *cinfo);
ea2cf228
FI		 496void nfs_request_remove_commit_list(struct nfs_page *req,
497 struct nfs_commit_info *cinfo);
498void nfs_init_cinfo(struct nfs_commit_info *cinfo,
499 struct inode *inode,
500 struct nfs_direct_req *dreq);
dc24826b 501int nfs_key_timeout_notify(struct file *filp, struct inode *inode);
ce52914e 502bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx, struct inode *inode);
a7d42ddb 503void nfs_pageio_stop_mirroring(struct nfs_pageio_descriptor *pgio);
e0c2b380 504
837bb1d7
TM		 505int nfs_filemap_write_and_wait_range(struct address_space *mapping,
506 loff_t lstart, loff_t lend);
507
a5314a74
TM		 508#ifdef CONFIG_NFS_V4_1
509static inline
510void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo)
511{
512 int i;
513
514 for (i = 0; i < cinfo->nbuckets; i++)
515 cinfo->buckets[i].direct_verf.committed = NFS_INVALID_STABLE_HOW;
516}
517#else
518static inline
519void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo)
520{
521}
522#endif
523
074cc1de
TM		 524#ifdef CONFIG_MIGRATION
525extern int nfs_migrate_page(struct address_space *,
a6bc32b8 526 struct page *, struct page *, enum migrate_mode);
074cc1de 527#endif
def6ed7e 528
8fc3c386
TM		 529static inline int
530nfs_write_verifier_cmp(const struct nfs_write_verifier *v1,
531 const struct nfs_write_verifier *v2)
532{
533 return memcmp(v1->data, v2->data, sizeof(v1->data));
534}
535
0e862a40
JL		 536/* unlink.c */
537extern struct rpc_task *
538nfs_async_rename(struct inode *old_dir, struct inode *new_dir,
539 struct dentry *old_dentry, struct dentry *new_dentry,
540 void (*complete)(struct rpc_task *, struct nfs_renamedata *));
541extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry);
542
1763da12
FI		 543/* direct.c */
544void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
545 struct nfs_direct_req *dreq);
6296556f 546extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq);
1763da12 547
cccef3b9 548/* nfs4proc.c */
8cab4c39 549extern struct nfs_client *nfs4_init_client(struct nfs_client *clp,
5c6e5b60 550 const struct nfs_client_initdata *);
05f4c350
CL		 551extern int nfs40_walk_client_list(struct nfs_client *clp,
552 struct nfs_client **result,
a52458b4 553 const struct cred *cred);
05f4c350
CL		 554extern int nfs41_walk_client_list(struct nfs_client *clp,
555 struct nfs_client **result,
a52458b4 556 const struct cred *cred);
10e037d1
S		 557extern void nfs4_test_session_trunk(struct rpc_clnt *clnt,
558 struct rpc_xprt *xprt,
559 void *data);
cccef3b9 560
ea7c38fe
TM		 561static inline struct inode *nfs_igrab_and_active(struct inode *inode)
562{
563 inode = igrab(inode);
564 if (inode != NULL && !nfs_sb_active(inode->i_sb)) {
565 iput(inode);
566 inode = NULL;
567 }
568 return inode;
569}
570
571static inline void nfs_iput_and_deactive(struct inode *inode)
572{
573 if (inode != NULL) {
574 struct super_block *sb = inode->i_sb;
575
576 iput(inode);
577 nfs_sb_deactive(sb);
578 }
579}
580
f7b422b1
DH		 581/*
582 * Determine the device name as a string
583 */
b514f872 584static inline char *nfs_devname(struct dentry *dentry,
54ceac45 585 char *buffer, ssize_t buflen)
f7b422b1 586{
b514f872 587 char *dummy;
97a54868 588 return nfs_path(&dummy, dentry, buffer, buflen, NFS_PATH_CANONICAL);
f7b422b1
DH		 589}
590
591/*
592 * Determine the actual block size (and log2 thereof)
593 */
594static inline
595unsigned long nfs_block_bits(unsigned long bsize, unsigned char *nrbitsp)
596{
597 /* make sure blocksize is a power of two */
598 if ((bsize & (bsize - 1)) || nrbitsp) {
599 unsigned char nrbits;
600
601 for (nrbits = 31; nrbits && !(bsize & (1 << nrbits)); nrbits--)
602 ;
603 bsize = 1 << nrbits;
604 if (nrbitsp)
605 *nrbitsp = nrbits;
606 }
607
608 return bsize;
609}
610
611/*
612 * Calculate the number of 512byte blocks used.
613 */
9eaa67c6 614static inline blkcnt_t nfs_calc_block_size(u64 tsize)
f7b422b1 615{
9eaa67c6 616 blkcnt_t used = (tsize + 511) >> 9;
f7b422b1
DH		 617 return (used > ULONG_MAX) ? ULONG_MAX : used;
618}
619
620/*
621 * Compute and set NFS server blocksize
622 */
623static inline
624unsigned long nfs_block_size(unsigned long bsize, unsigned char *nrbitsp)
625{
626 if (bsize < NFS_MIN_FILE_IO_SIZE)
627 bsize = NFS_DEF_FILE_IO_SIZE;
628 else if (bsize >= NFS_MAX_FILE_IO_SIZE)
629 bsize = NFS_MAX_FILE_IO_SIZE;
630
631 return nfs_block_bits(bsize, nrbitsp);
632}
633
634/*
635 * Determine the maximum file size for a superblock
636 */
637static inline
638void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize)
639{
640 sb->s_maxbytes = (loff_t)maxfilesize;
641 if (sb->s_maxbytes > MAX_LFS_FILESIZE || sb->s_maxbytes <= 0)
642 sb->s_maxbytes = MAX_LFS_FILESIZE;
643}
49a70f27 644
d15bc38d
TH		 645/*
646 * Record the page as unstable and mark its inode as dirty.
647 */
648static inline
86d80f97 649void nfs_mark_page_unstable(struct page *page, struct nfs_commit_info *cinfo)
d15bc38d 650{
86d80f97
TM		 651 if (!cinfo->dreq) {
652 struct inode *inode = page_file_mapping(page)->host;
d15bc38d 653
11fb9989 654 inc_node_page_state(page, NR_UNSTABLE_NFS);
86d80f97
TM		 655 inc_wb_stat(&inode_to_bdi(inode)->wb, WB_RECLAIMABLE);
656 __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
657 }
d15bc38d
TH		 658}
659
49a70f27
TM		 660/*
661 * Determine the number of bytes of data the page contains
662 */
663static inline
664unsigned int nfs_page_length(struct page *page)
665{
d56b4ddf 666 loff_t i_size = i_size_read(page_file_mapping(page)->host);
49a70f27
TM		 667
668 if (i_size > 0) {
8cd79788 669 pgoff_t index = page_index(page);
09cbfeaf 670 pgoff_t end_index = (i_size - 1) >> PAGE_SHIFT;
8cd79788 671 if (index < end_index)
09cbfeaf 672 return PAGE_SIZE;
8cd79788 673 if (index == end_index)
09cbfeaf 674 return ((i_size - 1) & ~PAGE_MASK) + 1;
49a70f27
TM		 675 }
676 return 0;
677}
8d5658c9 678
0b26a0bf
TM		 679/*
680 * Convert a umode to a dirent->d_type
681 */
682static inline
683unsigned char nfs_umode_to_dtype(umode_t mode)
684{
685 return (mode >> 12) & 15;
686}
687
8d5658c9
TM		 688/*
689 * Determine the number of pages in an array of length 'len' and
690 * with a base offset of 'base'
691 */
692static inline
693unsigned int nfs_page_array_len(unsigned int base, size_t len)
694{
695 return ((unsigned long)len + (unsigned long)base +
696 PAGE_SIZE - 1) >> PAGE_SHIFT;
697}
0110ee15 698
3a1556e8
TM		 699/*
700 * Convert a struct timespec into a 64-bit change attribute
701 *
702 * This does approximately the same thing as timespec_to_ns(),
703 * but for calculation efficiency, we multiply the seconds by
704 * 1024*1024*1024.
705 */
706static inline
e86d5a02 707u64 nfs_timespec_to_change_attr(const struct timespec64 *ts)
3a1556e8
TM		 708{
709 return ((u64)ts->tv_sec << 30) + ts->tv_nsec;
710}
1264a2f0
TM		 711
712#ifdef CONFIG_CRC32
713/**
714 * nfs_fhandle_hash - calculate the crc32 hash for the filehandle
715 * @fh - pointer to filehandle
716 *
717 * returns a crc32 hash for the filehandle that is compatible with
718 * the one displayed by "wireshark".
719 */
720static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
721{
722 return ~crc32_le(0xFFFFFFFF, &fh->data[0], fh->size);
723}
48c9579a
OK		 724static inline u32 nfs_stateid_hash(const nfs4_stateid *stateid)
725{
726 return ~crc32_le(0xFFFFFFFF, &stateid->other[0],
727 NFS4_STATEID_OTHER_SIZE);
728}
1264a2f0
TM		 729#else
730static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
731{
732 return 0;
733}
48c9579a
OK		 734static inline u32 nfs_stateid_hash(nfs4_stateid *stateid)
735{
736 return 0;
737}
1264a2f0 738#endif
0bcbf039
PT		 739
740static inline bool nfs_error_is_fatal(int err)
741{
742 switch (err) {
743 case -ERESTARTSYS:
7dc58ca5 744 case -EINTR:
54551d85
TM		 745 case -EACCES:
746 case -EDQUOT:
747 case -EFBIG:
0bcbf039
PT		 748 case -EIO:
749 case -ENOSPC:
750 case -EROFS:
54551d85 751 case -ESTALE:
0bcbf039 752 case -E2BIG:
2dc23aff 753 case -ENOMEM:
11982a7c 754 case -ETIMEDOUT:
0bcbf039
PT		 755 return true;
756 default:
757 return false;
758 }
759}
bf4b4905 760
8f54c7a4
TM		 761static inline bool nfs_error_is_fatal_on_server(int err)
762{
763 switch (err) {
764 case 0:
765 case -ERESTARTSYS:
766 case -EINTR:
767 return false;
768 }
769 return nfs_error_is_fatal(err);
770}
9954bf92
DH		 771
772/*
773 * Select between a default port value and a user-specified port value.
774 * If a zero value is set, then autobind will be used.
775 */
776static inline void nfs_set_port(struct sockaddr *sap, int *port,
777 const unsigned short default_port)
778{
779 if (*port == NFS_UNSPEC_PORT)
780 *port = default_port;
781
782 rpc_set_port(sap, *port);
783}
Linux 6.x block layer and io_uring tree(s)