1 #ifndef _LINUX_NFS_XDR_H
2 #define _LINUX_NFS_XDR_H
4 #include <linux/nfsacl.h>
5 #include <linux/sunrpc/gss_api.h>
8 * To change the maximum rsize and wsize supported by the NFS client, adjust
9 * NFS_MAX_FILE_IO_SIZE. 64KB is a typical maximum, but some servers can
10 * support a megabyte or more. The default is left at 4096 bytes, which is
11 * reasonable for NFS over UDP.
13 #define NFS_MAX_FILE_IO_SIZE (1048576U)
14 #define NFS_DEF_FILE_IO_SIZE (4096U)
15 #define NFS_MIN_FILE_IO_SIZE (1024U)
28 * Helper for checking equality between 2 fsids.
30 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
32 return a->major == b->major && a->minor == b->minor;
35 struct nfs4_threshold {
45 unsigned int valid; /* which fields are valid */
63 __u64 mounted_on_fileid;
64 struct timespec atime;
65 struct timespec mtime;
66 struct timespec ctime;
67 __u64 change_attr; /* NFSv4 change attribute */
68 __u64 pre_change_attr;/* pre-op NFSv4 change attribute */
69 __u64 pre_size; /* pre_op_attr.size */
70 struct timespec pre_mtime; /* pre_op_attr.mtime */
71 struct timespec pre_ctime; /* pre_op_attr.ctime */
72 unsigned long time_start;
73 unsigned long gencount;
74 struct nfs4_string *owner_name;
75 struct nfs4_string *group_name;
76 struct nfs4_threshold *mdsthreshold; /* pNFS threshold hints */
79 #define NFS_ATTR_FATTR_TYPE (1U << 0)
80 #define NFS_ATTR_FATTR_MODE (1U << 1)
81 #define NFS_ATTR_FATTR_NLINK (1U << 2)
82 #define NFS_ATTR_FATTR_OWNER (1U << 3)
83 #define NFS_ATTR_FATTR_GROUP (1U << 4)
84 #define NFS_ATTR_FATTR_RDEV (1U << 5)
85 #define NFS_ATTR_FATTR_SIZE (1U << 6)
86 #define NFS_ATTR_FATTR_PRESIZE (1U << 7)
87 #define NFS_ATTR_FATTR_BLOCKS_USED (1U << 8)
88 #define NFS_ATTR_FATTR_SPACE_USED (1U << 9)
89 #define NFS_ATTR_FATTR_FSID (1U << 10)
90 #define NFS_ATTR_FATTR_FILEID (1U << 11)
91 #define NFS_ATTR_FATTR_ATIME (1U << 12)
92 #define NFS_ATTR_FATTR_MTIME (1U << 13)
93 #define NFS_ATTR_FATTR_CTIME (1U << 14)
94 #define NFS_ATTR_FATTR_PREMTIME (1U << 15)
95 #define NFS_ATTR_FATTR_PRECTIME (1U << 16)
96 #define NFS_ATTR_FATTR_CHANGE (1U << 17)
97 #define NFS_ATTR_FATTR_PRECHANGE (1U << 18)
98 #define NFS_ATTR_FATTR_V4_LOCATIONS (1U << 19)
99 #define NFS_ATTR_FATTR_V4_REFERRAL (1U << 20)
100 #define NFS_ATTR_FATTR_MOUNTPOINT (1U << 21)
101 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
102 #define NFS_ATTR_FATTR_OWNER_NAME (1U << 23)
103 #define NFS_ATTR_FATTR_GROUP_NAME (1U << 24)
104 #define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)
106 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
107 | NFS_ATTR_FATTR_MODE \
108 | NFS_ATTR_FATTR_NLINK \
109 | NFS_ATTR_FATTR_OWNER \
110 | NFS_ATTR_FATTR_GROUP \
111 | NFS_ATTR_FATTR_RDEV \
112 | NFS_ATTR_FATTR_SIZE \
113 | NFS_ATTR_FATTR_FSID \
114 | NFS_ATTR_FATTR_FILEID \
115 | NFS_ATTR_FATTR_ATIME \
116 | NFS_ATTR_FATTR_MTIME \
117 | NFS_ATTR_FATTR_CTIME \
118 | NFS_ATTR_FATTR_CHANGE)
119 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
120 | NFS_ATTR_FATTR_BLOCKS_USED)
121 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
122 | NFS_ATTR_FATTR_SPACE_USED)
123 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
124 | NFS_ATTR_FATTR_SPACE_USED \
125 | NFS_ATTR_FATTR_V4_SECURITY_LABEL)
128 * Info on the file system
131 struct nfs_fattr *fattr; /* Post-op attributes */
132 __u32 rtmax; /* max. read transfer size */
133 __u32 rtpref; /* pref. read transfer size */
134 __u32 rtmult; /* reads should be multiple of this */
135 __u32 wtmax; /* max. write transfer size */
136 __u32 wtpref; /* pref. write transfer size */
137 __u32 wtmult; /* writes should be multiple of this */
138 __u32 dtpref; /* pref. readdir transfer size */
140 struct timespec time_delta; /* server time granularity */
141 __u32 lease_time; /* in seconds */
142 __u32 layouttype; /* supported pnfs layout driver */
143 __u32 blksize; /* preferred pnfs io block size */
147 struct nfs_fattr *fattr; /* Post-op attributes */
148 __u64 tbytes; /* total size in bytes */
149 __u64 fbytes; /* # of free bytes */
150 __u64 abytes; /* # of bytes available to user */
151 __u64 tfiles; /* # of files */
152 __u64 ffiles; /* # of free files */
153 __u64 afiles; /* # of files available to user */
157 __u32 tsize; /* Server transfer size */
158 __u32 bsize; /* Filesystem block size */
159 __u32 blocks; /* No. of "bsize" blocks on filesystem */
160 __u32 bfree; /* No. of free "bsize" blocks */
161 __u32 bavail; /* No. of available "bsize" blocks */
164 struct nfs_pathconf {
165 struct nfs_fattr *fattr; /* Post-op attributes */
166 __u32 max_link; /* max # of hard links */
167 __u32 max_namelen; /* max name length */
170 struct nfs4_change_info {
178 /* nfs41 sessions channel attributes */
179 struct nfs4_channel_attrs {
182 u32 max_resp_sz_cached;
188 struct nfs4_sequence_args {
189 struct nfs4_slot *sa_slot;
190 u8 sa_cache_this : 1,
194 struct nfs4_sequence_res {
195 struct nfs4_slot *sr_slot; /* slot used to send request */
196 unsigned long sr_timestamp;
197 int sr_status; /* sequence operation status */
199 u32 sr_highest_slotid;
200 u32 sr_target_highest_slotid;
203 struct nfs4_get_lease_time_args {
204 struct nfs4_sequence_args la_seq_args;
207 struct nfs4_get_lease_time_res {
208 struct nfs4_sequence_res lr_seq_res;
209 struct nfs_fsinfo *lr_fsinfo;
212 #define PNFS_LAYOUT_MAXSIZE 4096
214 struct nfs4_layoutdriver_data {
220 struct pnfs_layout_range {
226 struct nfs4_layoutget_args {
227 struct nfs4_sequence_args seq_args;
229 struct pnfs_layout_range range;
233 struct nfs_open_context *ctx;
234 nfs4_stateid stateid;
235 unsigned long timestamp;
236 struct nfs4_layoutdriver_data layout;
239 struct nfs4_layoutget_res {
240 struct nfs4_sequence_res seq_res;
241 __u32 return_on_close;
242 struct pnfs_layout_range range;
244 nfs4_stateid stateid;
245 struct nfs4_layoutdriver_data *layoutp;
248 struct nfs4_layoutget {
249 struct nfs4_layoutget_args args;
250 struct nfs4_layoutget_res res;
251 struct rpc_cred *cred;
255 struct nfs4_getdeviceinfo_args {
256 struct nfs4_sequence_args seq_args;
257 struct pnfs_device *pdev;
260 struct nfs4_getdeviceinfo_res {
261 struct nfs4_sequence_res seq_res;
262 struct pnfs_device *pdev;
265 struct nfs4_layoutcommit_args {
266 struct nfs4_sequence_args seq_args;
267 nfs4_stateid stateid;
268 __u64 lastbytewritten;
271 size_t layoutupdate_len;
272 struct page *layoutupdate_page;
273 struct page **layoutupdate_pages;
276 struct nfs4_layoutcommit_res {
277 struct nfs4_sequence_res seq_res;
278 struct nfs_fattr *fattr;
279 const struct nfs_server *server;
283 struct nfs4_layoutcommit_data {
284 struct rpc_task task;
285 struct nfs_fattr fattr;
286 struct list_head lseg_list;
287 struct rpc_cred *cred;
288 struct nfs4_layoutcommit_args args;
289 struct nfs4_layoutcommit_res res;
292 struct nfs4_layoutreturn_args {
293 struct nfs4_sequence_args seq_args;
294 struct pnfs_layout_hdr *layout;
296 struct pnfs_layout_range range;
297 nfs4_stateid stateid;
301 struct nfs4_layoutreturn_res {
302 struct nfs4_sequence_res seq_res;
304 nfs4_stateid stateid;
307 struct nfs4_layoutreturn {
308 struct nfs4_layoutreturn_args args;
309 struct nfs4_layoutreturn_res res;
310 struct rpc_cred *cred;
311 struct nfs_client *clp;
315 struct stateowner_id {
321 * Arguments to the open call.
323 struct nfs_openargs {
324 struct nfs4_sequence_args seq_args;
325 const struct nfs_fh * fh;
326 struct nfs_seqid * seqid;
331 struct stateowner_id id;
334 struct iattr * attrs; /* UNCHECKED, GUARDED */
335 nfs4_verifier verifier; /* EXCLUSIVE */
337 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
338 fmode_t delegation_type; /* CLAIM_PREVIOUS */
340 const struct qstr * name;
341 const struct nfs_server *server; /* Needed for ID mapping */
343 const u32 * open_bitmap;
345 enum createmode4 createmode;
346 const struct nfs4_label *label;
350 struct nfs4_sequence_res seq_res;
351 nfs4_stateid stateid;
353 struct nfs4_change_info cinfo;
355 struct nfs_fattr * f_attr;
356 struct nfs4_label *f_label;
357 struct nfs_seqid * seqid;
358 const struct nfs_server *server;
359 fmode_t delegation_type;
360 nfs4_stateid delegation;
363 __u32 attrset[NFS4_BITMAP_SIZE];
364 struct nfs4_string *owner;
365 struct nfs4_string *group_owner;
366 __u32 access_request;
367 __u32 access_supported;
372 * Arguments to the open_confirm call.
374 struct nfs_open_confirmargs {
375 struct nfs4_sequence_args seq_args;
376 const struct nfs_fh * fh;
377 nfs4_stateid * stateid;
378 struct nfs_seqid * seqid;
381 struct nfs_open_confirmres {
382 struct nfs4_sequence_res seq_res;
383 nfs4_stateid stateid;
384 struct nfs_seqid * seqid;
388 * Arguments to the close call.
390 struct nfs_closeargs {
391 struct nfs4_sequence_args seq_args;
393 nfs4_stateid stateid;
394 struct nfs_seqid * seqid;
399 struct nfs_closeres {
400 struct nfs4_sequence_res seq_res;
401 nfs4_stateid stateid;
402 struct nfs_fattr * fattr;
403 struct nfs_seqid * seqid;
404 const struct nfs_server *server;
407 * * Arguments to the lock,lockt, and locku call.
415 struct nfs_lock_args {
416 struct nfs4_sequence_args seq_args;
418 struct file_lock * fl;
419 struct nfs_seqid * lock_seqid;
420 nfs4_stateid lock_stateid;
421 struct nfs_seqid * open_seqid;
422 nfs4_stateid open_stateid;
423 struct nfs_lowner lock_owner;
424 unsigned char block : 1;
425 unsigned char reclaim : 1;
426 unsigned char new_lock : 1;
427 unsigned char new_lock_owner : 1;
430 struct nfs_lock_res {
431 struct nfs4_sequence_res seq_res;
432 nfs4_stateid stateid;
433 struct nfs_seqid * lock_seqid;
434 struct nfs_seqid * open_seqid;
437 struct nfs_locku_args {
438 struct nfs4_sequence_args seq_args;
440 struct file_lock * fl;
441 struct nfs_seqid * seqid;
442 nfs4_stateid stateid;
445 struct nfs_locku_res {
446 struct nfs4_sequence_res seq_res;
447 nfs4_stateid stateid;
448 struct nfs_seqid * seqid;
451 struct nfs_lockt_args {
452 struct nfs4_sequence_args seq_args;
454 struct file_lock * fl;
455 struct nfs_lowner lock_owner;
458 struct nfs_lockt_res {
459 struct nfs4_sequence_res seq_res;
460 struct file_lock * denied; /* LOCK, LOCKT failed */
463 struct nfs_release_lockowner_args {
464 struct nfs4_sequence_args seq_args;
465 struct nfs_lowner lock_owner;
468 struct nfs_release_lockowner_res {
469 struct nfs4_sequence_res seq_res;
472 struct nfs4_delegreturnargs {
473 struct nfs4_sequence_args seq_args;
474 const struct nfs_fh *fhandle;
475 const nfs4_stateid *stateid;
479 struct nfs4_delegreturnres {
480 struct nfs4_sequence_res seq_res;
481 struct nfs_fattr * fattr;
482 const struct nfs_server *server;
486 * Arguments to the write call.
488 struct nfs_write_verifier {
492 struct nfs_writeverf {
493 struct nfs_write_verifier verifier;
494 enum nfs3_stable_how committed;
498 * Arguments shared by the read and write call.
500 struct nfs_pgio_args {
501 struct nfs4_sequence_args seq_args;
503 struct nfs_open_context *context;
504 struct nfs_lock_context *lock_context;
505 nfs4_stateid stateid;
509 struct page ** pages;
510 const u32 * bitmask; /* used by write */
511 enum nfs3_stable_how stable; /* used by write */
514 struct nfs_pgio_res {
515 struct nfs4_sequence_res seq_res;
516 struct nfs_fattr * fattr;
519 int eof; /* used by read */
520 struct nfs_writeverf * verf; /* used by write */
521 const struct nfs_server *server; /* used by write */
526 * Arguments to the commit call.
528 struct nfs_commitargs {
529 struct nfs4_sequence_args seq_args;
536 struct nfs_commitres {
537 struct nfs4_sequence_res seq_res;
539 struct nfs_fattr *fattr;
540 struct nfs_writeverf *verf;
541 const struct nfs_server *server;
545 * Common arguments to the unlink call
547 struct nfs_removeargs {
548 struct nfs4_sequence_args seq_args;
549 const struct nfs_fh *fh;
553 struct nfs_removeres {
554 struct nfs4_sequence_res seq_res;
555 const struct nfs_server *server;
556 struct nfs_fattr *dir_attr;
557 struct nfs4_change_info cinfo;
561 * Common arguments to the rename call
563 struct nfs_renameargs {
564 struct nfs4_sequence_args seq_args;
565 const struct nfs_fh *old_dir;
566 const struct nfs_fh *new_dir;
567 const struct qstr *old_name;
568 const struct qstr *new_name;
571 struct nfs_renameres {
572 struct nfs4_sequence_res seq_res;
573 const struct nfs_server *server;
574 struct nfs4_change_info old_cinfo;
575 struct nfs_fattr *old_fattr;
576 struct nfs4_change_info new_cinfo;
577 struct nfs_fattr *new_fattr;
580 /* parsed sec= options */
581 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
582 struct nfs_auth_info {
583 unsigned int flavor_len;
584 rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS];
588 * Argument struct for decode_entry function
598 struct nfs_fattr * fattr;
599 struct nfs4_label *label;
600 unsigned char d_type;
601 struct nfs_server * server;
605 * The following types are for NFSv2 only.
607 struct nfs_sattrargs {
609 struct iattr * sattr;
612 struct nfs_diropargs {
618 struct nfs_createargs {
622 struct iattr * sattr;
625 struct nfs_setattrargs {
626 struct nfs4_sequence_args seq_args;
628 nfs4_stateid stateid;
630 const struct nfs_server * server; /* Needed for name mapping */
632 const struct nfs4_label *label;
635 struct nfs_setaclargs {
636 struct nfs4_sequence_args seq_args;
639 unsigned int acl_pgbase;
640 struct page ** acl_pages;
643 struct nfs_setaclres {
644 struct nfs4_sequence_res seq_res;
647 struct nfs_getaclargs {
648 struct nfs4_sequence_args seq_args;
651 unsigned int acl_pgbase;
652 struct page ** acl_pages;
655 /* getxattr ACL interface flags */
656 #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
657 struct nfs_getaclres {
658 struct nfs4_sequence_res seq_res;
660 size_t acl_data_offset;
662 struct page * acl_scratch;
665 struct nfs_setattrres {
666 struct nfs4_sequence_res seq_res;
667 struct nfs_fattr * fattr;
668 struct nfs4_label *label;
669 const struct nfs_server * server;
672 struct nfs_linkargs {
673 struct nfs_fh * fromfh;
674 struct nfs_fh * tofh;
679 struct nfs_symlinkargs {
680 struct nfs_fh * fromfh;
681 const char * fromname;
682 unsigned int fromlen;
683 struct page ** pages;
684 unsigned int pathlen;
685 struct iattr * sattr;
688 struct nfs_readdirargs {
692 struct page ** pages;
695 struct nfs3_getaclargs {
698 struct page ** pages;
701 struct nfs3_setaclargs {
702 struct inode * inode;
704 struct posix_acl * acl_access;
705 struct posix_acl * acl_default;
708 struct page ** pages;
713 struct nfs_fattr * fattr;
716 struct nfs_readlinkargs {
720 struct page ** pages;
723 struct nfs3_sattrargs {
725 struct iattr * sattr;
727 struct timespec guardtime;
730 struct nfs3_diropargs {
736 struct nfs3_accessargs {
741 struct nfs3_createargs {
745 struct iattr * sattr;
746 enum nfs3_createmode createmode;
750 struct nfs3_mkdirargs {
754 struct iattr * sattr;
757 struct nfs3_symlinkargs {
758 struct nfs_fh * fromfh;
759 const char * fromname;
760 unsigned int fromlen;
761 struct page ** pages;
762 unsigned int pathlen;
763 struct iattr * sattr;
766 struct nfs3_mknodargs {
770 enum nfs3_ftype type;
771 struct iattr * sattr;
775 struct nfs3_linkargs {
776 struct nfs_fh * fromfh;
777 struct nfs_fh * tofh;
782 struct nfs3_readdirargs {
788 struct page ** pages;
791 struct nfs3_diropres {
792 struct nfs_fattr * dir_attr;
794 struct nfs_fattr * fattr;
797 struct nfs3_accessres {
798 struct nfs_fattr * fattr;
802 struct nfs3_readlinkargs {
806 struct page ** pages;
809 struct nfs3_linkres {
810 struct nfs_fattr * dir_attr;
811 struct nfs_fattr * fattr;
814 struct nfs3_readdirres {
815 struct nfs_fattr * dir_attr;
820 struct nfs3_getaclres {
821 struct nfs_fattr * fattr;
823 unsigned int acl_access_count;
824 unsigned int acl_default_count;
825 struct posix_acl * acl_access;
826 struct posix_acl * acl_default;
829 #if IS_ENABLED(CONFIG_NFS_V4)
831 typedef u64 clientid4;
833 struct nfs4_accessargs {
834 struct nfs4_sequence_args seq_args;
835 const struct nfs_fh * fh;
840 struct nfs4_accessres {
841 struct nfs4_sequence_res seq_res;
842 const struct nfs_server * server;
843 struct nfs_fattr * fattr;
848 struct nfs4_create_arg {
849 struct nfs4_sequence_args seq_args;
853 struct page ** pages;
855 } symlink; /* NF4LNK */
859 } device; /* NF4BLK, NF4CHR */
861 const struct qstr * name;
862 const struct nfs_server * server;
863 const struct iattr * attrs;
864 const struct nfs_fh * dir_fh;
866 const struct nfs4_label *label;
869 struct nfs4_create_res {
870 struct nfs4_sequence_res seq_res;
871 const struct nfs_server * server;
873 struct nfs_fattr * fattr;
874 struct nfs4_label *label;
875 struct nfs4_change_info dir_cinfo;
878 struct nfs4_fsinfo_arg {
879 struct nfs4_sequence_args seq_args;
880 const struct nfs_fh * fh;
884 struct nfs4_fsinfo_res {
885 struct nfs4_sequence_res seq_res;
886 struct nfs_fsinfo *fsinfo;
889 struct nfs4_getattr_arg {
890 struct nfs4_sequence_args seq_args;
891 const struct nfs_fh * fh;
895 struct nfs4_getattr_res {
896 struct nfs4_sequence_res seq_res;
897 const struct nfs_server * server;
898 struct nfs_fattr * fattr;
899 struct nfs4_label *label;
902 struct nfs4_link_arg {
903 struct nfs4_sequence_args seq_args;
904 const struct nfs_fh * fh;
905 const struct nfs_fh * dir_fh;
906 const struct qstr * name;
910 struct nfs4_link_res {
911 struct nfs4_sequence_res seq_res;
912 const struct nfs_server * server;
913 struct nfs_fattr * fattr;
914 struct nfs4_label *label;
915 struct nfs4_change_info cinfo;
916 struct nfs_fattr * dir_attr;
920 struct nfs4_lookup_arg {
921 struct nfs4_sequence_args seq_args;
922 const struct nfs_fh * dir_fh;
923 const struct qstr * name;
927 struct nfs4_lookup_res {
928 struct nfs4_sequence_res seq_res;
929 const struct nfs_server * server;
930 struct nfs_fattr * fattr;
932 struct nfs4_label *label;
935 struct nfs4_lookup_root_arg {
936 struct nfs4_sequence_args seq_args;
940 struct nfs4_pathconf_arg {
941 struct nfs4_sequence_args seq_args;
942 const struct nfs_fh * fh;
946 struct nfs4_pathconf_res {
947 struct nfs4_sequence_res seq_res;
948 struct nfs_pathconf *pathconf;
951 struct nfs4_readdir_arg {
952 struct nfs4_sequence_args seq_args;
953 const struct nfs_fh * fh;
955 nfs4_verifier verifier;
957 struct page ** pages; /* zero-copy data */
958 unsigned int pgbase; /* zero-copy data */
963 struct nfs4_readdir_res {
964 struct nfs4_sequence_res seq_res;
965 nfs4_verifier verifier;
969 struct nfs4_readlink {
970 struct nfs4_sequence_args seq_args;
971 const struct nfs_fh * fh;
973 unsigned int pglen; /* zero-copy data */
974 struct page ** pages; /* zero-copy data */
977 struct nfs4_readlink_res {
978 struct nfs4_sequence_res seq_res;
981 #define NFS4_SETCLIENTID_NAMELEN (127)
982 struct nfs4_setclientid {
983 const nfs4_verifier * sc_verifier;
984 unsigned int sc_name_len;
985 char sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
987 unsigned int sc_netid_len;
988 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
989 unsigned int sc_uaddr_len;
990 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
992 struct rpc_cred *sc_cred;
995 struct nfs4_setclientid_res {
997 nfs4_verifier confirm;
1000 struct nfs4_statfs_arg {
1001 struct nfs4_sequence_args seq_args;
1002 const struct nfs_fh * fh;
1003 const u32 * bitmask;
1006 struct nfs4_statfs_res {
1007 struct nfs4_sequence_res seq_res;
1008 struct nfs_fsstat *fsstat;
1011 struct nfs4_server_caps_arg {
1012 struct nfs4_sequence_args seq_args;
1013 struct nfs_fh *fhandle;
1016 struct nfs4_server_caps_res {
1017 struct nfs4_sequence_res seq_res;
1018 u32 attr_bitmask[3];
1025 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1026 struct nfs4_pathname {
1027 unsigned int ncomponents;
1028 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1031 #define NFS4_FS_LOCATION_MAXSERVERS 10
1032 struct nfs4_fs_location {
1033 unsigned int nservers;
1034 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1035 struct nfs4_pathname rootpath;
1038 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1039 struct nfs4_fs_locations {
1040 struct nfs_fattr fattr;
1041 const struct nfs_server *server;
1042 struct nfs4_pathname fs_path;
1044 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1047 struct nfs4_fs_locations_arg {
1048 struct nfs4_sequence_args seq_args;
1049 const struct nfs_fh *dir_fh;
1050 const struct nfs_fh *fh;
1051 const struct qstr *name;
1055 unsigned char migration:1, renew:1;
1058 struct nfs4_fs_locations_res {
1059 struct nfs4_sequence_res seq_res;
1060 struct nfs4_fs_locations *fs_locations;
1061 unsigned char migration:1, renew:1;
1064 struct nfs4_secinfo4 {
1066 struct rpcsec_gss_info flavor_info;
1069 struct nfs4_secinfo_flavors {
1070 unsigned int num_flavors;
1071 struct nfs4_secinfo4 flavors[0];
1074 struct nfs4_secinfo_arg {
1075 struct nfs4_sequence_args seq_args;
1076 const struct nfs_fh *dir_fh;
1077 const struct qstr *name;
1080 struct nfs4_secinfo_res {
1081 struct nfs4_sequence_res seq_res;
1082 struct nfs4_secinfo_flavors *flavors;
1085 struct nfs4_fsid_present_arg {
1086 struct nfs4_sequence_args seq_args;
1087 const struct nfs_fh *fh;
1089 unsigned char renew:1;
1092 struct nfs4_fsid_present_res {
1093 struct nfs4_sequence_res seq_res;
1095 unsigned char renew:1;
1098 #endif /* CONFIG_NFS_V4 */
1105 #ifdef CONFIG_NFS_V4_1
1107 struct pnfs_commit_bucket {
1108 struct list_head written;
1109 struct list_head committing;
1110 struct pnfs_layout_segment *wlseg;
1111 struct pnfs_layout_segment *clseg;
1112 struct nfs_writeverf direct_verf;
1115 struct pnfs_ds_commit_info {
1119 struct pnfs_commit_bucket *buckets;
1122 #define NFS4_OP_MAP_NUM_LONGS \
1123 DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
1124 #define NFS4_OP_MAP_NUM_WORDS \
1125 (NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
1126 struct nfs4_op_map {
1128 unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
1129 u32 words[NFS4_OP_MAP_NUM_WORDS];
1133 struct nfs41_state_protection {
1135 struct nfs4_op_map enforce;
1136 struct nfs4_op_map allow;
1139 #define NFS4_EXCHANGE_ID_LEN (48)
1140 struct nfs41_exchange_id_args {
1141 struct nfs_client *client;
1142 nfs4_verifier *verifier;
1143 unsigned int id_len;
1144 char id[NFS4_EXCHANGE_ID_LEN];
1146 struct nfs41_state_protection state_protect;
1149 struct nfs41_server_owner {
1151 uint32_t major_id_sz;
1152 char major_id[NFS4_OPAQUE_LIMIT];
1155 struct nfs41_server_scope {
1156 uint32_t server_scope_sz;
1157 char server_scope[NFS4_OPAQUE_LIMIT];
1160 struct nfs41_impl_id {
1161 char domain[NFS4_OPAQUE_LIMIT + 1];
1162 char name[NFS4_OPAQUE_LIMIT + 1];
1163 struct nfstime4 date;
1166 struct nfs41_bind_conn_to_session_res {
1167 struct nfs4_session *session;
1169 bool use_conn_in_rdma_mode;
1172 struct nfs41_exchange_id_res {
1176 struct nfs41_server_owner *server_owner;
1177 struct nfs41_server_scope *server_scope;
1178 struct nfs41_impl_id *impl_id;
1179 struct nfs41_state_protection state_protect;
1182 struct nfs41_create_session_args {
1183 struct nfs_client *client;
1185 uint32_t cb_program;
1186 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1187 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1190 struct nfs41_create_session_res {
1191 struct nfs_client *client;
1194 struct nfs41_reclaim_complete_args {
1195 struct nfs4_sequence_args seq_args;
1196 /* In the future extend to include curr_fh for use with migration */
1197 unsigned char one_fs:1;
1200 struct nfs41_reclaim_complete_res {
1201 struct nfs4_sequence_res seq_res;
1204 #define SECINFO_STYLE_CURRENT_FH 0
1205 #define SECINFO_STYLE_PARENT 1
1206 struct nfs41_secinfo_no_name_args {
1207 struct nfs4_sequence_args seq_args;
1211 struct nfs41_test_stateid_args {
1212 struct nfs4_sequence_args seq_args;
1213 nfs4_stateid *stateid;
1216 struct nfs41_test_stateid_res {
1217 struct nfs4_sequence_res seq_res;
1218 unsigned int status;
1221 struct nfs41_free_stateid_args {
1222 struct nfs4_sequence_args seq_args;
1223 nfs4_stateid stateid;
1226 struct nfs41_free_stateid_res {
1227 struct nfs4_sequence_res seq_res;
1228 unsigned int status;
1232 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1234 kfree(cinfo->buckets);
1239 struct pnfs_ds_commit_info {
1243 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1247 #endif /* CONFIG_NFS_V4_1 */
1249 #ifdef CONFIG_NFS_V4_2
1250 struct nfs42_falloc_args {
1251 struct nfs4_sequence_args seq_args;
1253 struct nfs_fh *falloc_fh;
1254 nfs4_stateid falloc_stateid;
1259 struct nfs42_falloc_res {
1260 struct nfs4_sequence_res seq_res;
1261 unsigned int status;
1264 struct nfs42_seek_args {
1265 struct nfs4_sequence_args seq_args;
1267 struct nfs_fh *sa_fh;
1268 nfs4_stateid sa_stateid;
1273 struct nfs42_seek_res {
1274 struct nfs4_sequence_res seq_res;
1275 unsigned int status;
1284 #define NFS_PAGEVEC_SIZE (8U)
1286 struct nfs_page_array {
1287 struct page **pagevec;
1288 unsigned int npages; /* Max length of pagevec */
1289 struct page *page_array[NFS_PAGEVEC_SIZE];
1292 /* used as flag bits in nfs_pgio_header */
1294 NFS_IOHDR_ERROR = 0,
1299 struct nfs_pgio_header {
1300 struct inode *inode;
1301 struct rpc_cred *cred;
1302 struct list_head pages;
1303 struct nfs_page *req;
1304 struct nfs_writeverf verf; /* Used for writes */
1305 struct pnfs_layout_segment *lseg;
1307 const struct rpc_call_ops *mds_ops;
1308 void (*release) (struct nfs_pgio_header *hdr);
1309 const struct nfs_pgio_completion_ops *completion_ops;
1310 const struct nfs_rw_ops *rw_ops;
1311 struct nfs_direct_req *dreq;
1312 void *layout_private;
1314 /* fields protected by lock */
1316 int error; /* merge with pnfs_error */
1317 unsigned long good_bytes; /* boundary of good data */
1318 unsigned long flags;
1323 struct rpc_task task;
1324 struct nfs_fattr fattr;
1325 struct nfs_pgio_args args; /* argument struct */
1326 struct nfs_pgio_res res; /* result struct */
1327 unsigned long timestamp; /* For lease renewal */
1328 int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1329 __u64 mds_offset; /* Filelayout dense stripe */
1330 struct nfs_page_array page_array;
1331 struct nfs_client *ds_clp; /* pNFS data server */
1332 int ds_commit_idx; /* ds index if ds_clp is set */
1333 int pgio_mirror_idx;/* mirror index in pgio layer */
1336 struct nfs_mds_commit_info {
1338 unsigned long ncommit;
1339 struct list_head list;
1342 struct nfs_commit_data;
1344 struct nfs_commit_completion_ops {
1345 void (*error_cleanup) (struct nfs_inode *nfsi);
1346 void (*completion) (struct nfs_commit_data *data);
1349 struct nfs_commit_info {
1351 struct nfs_mds_commit_info *mds;
1352 struct pnfs_ds_commit_info *ds;
1353 struct nfs_direct_req *dreq; /* O_DIRECT request */
1354 const struct nfs_commit_completion_ops *completion_ops;
1357 struct nfs_commit_data {
1358 struct rpc_task task;
1359 struct inode *inode;
1360 struct rpc_cred *cred;
1361 struct nfs_fattr fattr;
1362 struct nfs_writeverf verf;
1363 struct list_head pages; /* Coalesced requests we wish to flush */
1364 struct list_head list; /* lists of struct nfs_write_data */
1365 struct nfs_direct_req *dreq; /* O_DIRECT request */
1366 struct nfs_commitargs args; /* argument struct */
1367 struct nfs_commitres res; /* result struct */
1368 struct nfs_open_context *context;
1369 struct pnfs_layout_segment *lseg;
1370 struct nfs_client *ds_clp; /* pNFS data server */
1371 int ds_commit_index;
1373 const struct rpc_call_ops *mds_ops;
1374 const struct nfs_commit_completion_ops *completion_ops;
1375 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1378 struct nfs_pgio_completion_ops {
1379 void (*error_cleanup)(struct list_head *head);
1380 void (*init_hdr)(struct nfs_pgio_header *hdr);
1381 void (*completion)(struct nfs_pgio_header *hdr);
1384 struct nfs_unlinkdata {
1385 struct hlist_node list;
1386 struct nfs_removeargs args;
1387 struct nfs_removeres res;
1389 struct rpc_cred *cred;
1390 struct nfs_fattr dir_attr;
1394 struct nfs_renamedata {
1395 struct nfs_renameargs args;
1396 struct nfs_renameres res;
1397 struct rpc_cred *cred;
1398 struct inode *old_dir;
1399 struct dentry *old_dentry;
1400 struct nfs_fattr old_fattr;
1401 struct inode *new_dir;
1402 struct dentry *new_dentry;
1403 struct nfs_fattr new_fattr;
1404 void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1408 struct nfs_access_entry;
1411 struct nfs_subversion;
1412 struct nfs_mount_info;
1413 struct nfs_client_initdata;
1414 struct nfs_pageio_descriptor;
1417 * RPC procedure vector for NFSv2/NFSv3 demuxing
1419 struct nfs_rpc_ops {
1420 u32 version; /* Protocol version */
1421 const struct dentry_operations *dentry_ops;
1422 const struct inode_operations *dir_inode_ops;
1423 const struct inode_operations *file_inode_ops;
1424 const struct file_operations *file_ops;
1426 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1427 struct nfs_fsinfo *);
1428 struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1429 struct nfs_fh *, struct nfs_fattr *);
1430 struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1431 struct nfs_subversion *);
1432 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1433 struct nfs_fattr *, struct nfs4_label *);
1434 int (*setattr) (struct dentry *, struct nfs_fattr *,
1436 int (*lookup) (struct inode *, struct qstr *,
1437 struct nfs_fh *, struct nfs_fattr *,
1438 struct nfs4_label *);
1439 int (*access) (struct inode *, struct nfs_access_entry *);
1440 int (*readlink)(struct inode *, struct page *, unsigned int,
1442 int (*create) (struct inode *, struct dentry *,
1443 struct iattr *, int);
1444 int (*remove) (struct inode *, struct qstr *);
1445 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
1446 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1447 int (*unlink_done) (struct rpc_task *, struct inode *);
1448 void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
1449 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1450 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1451 int (*link) (struct inode *, struct inode *, struct qstr *);
1452 int (*symlink) (struct inode *, struct dentry *, struct page *,
1453 unsigned int, struct iattr *);
1454 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1455 int (*rmdir) (struct inode *, struct qstr *);
1456 int (*readdir) (struct dentry *, struct rpc_cred *,
1457 u64, struct page **, unsigned int, int);
1458 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1460 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1461 struct nfs_fsstat *);
1462 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1463 struct nfs_fsinfo *);
1464 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1465 struct nfs_pathconf *);
1466 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1467 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1468 int (*pgio_rpc_prepare)(struct rpc_task *,
1469 struct nfs_pgio_header *);
1470 void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1471 int (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1472 void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
1473 int (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1474 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1475 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1476 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1477 int (*lock)(struct file *, int, struct file_lock *);
1478 int (*lock_check_bounds)(const struct file_lock *);
1479 void (*clear_acl_cache)(struct inode *);
1480 void (*close_context)(struct nfs_open_context *ctx, int);
1481 struct inode * (*open_context) (struct inode *dir,
1482 struct nfs_open_context *ctx,
1484 struct iattr *iattr,
1486 int (*have_delegation)(struct inode *, fmode_t);
1487 int (*return_delegation)(struct inode *);
1488 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1490 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1492 void (*free_client) (struct nfs_client *);
1493 struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1494 struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1495 struct nfs_fattr *, rpc_authflavor_t);
1499 * NFS_CALL(getattr, inode, (fattr));
1501 * NFS_PROTO(inode)->getattr(fattr);
1503 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1506 * Function vectors etc. for the NFS client
1508 extern const struct nfs_rpc_ops nfs_v2_clientops;
1509 extern const struct nfs_rpc_ops nfs_v3_clientops;
1510 extern const struct nfs_rpc_ops nfs_v4_clientops;
1511 extern const struct rpc_version nfs_version2;
1512 extern const struct rpc_version nfs_version3;
1513 extern const struct rpc_version nfs_version4;
1515 extern const struct rpc_version nfsacl_version3;
1516 extern const struct rpc_program nfsacl_program;