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;
261 struct nfs4_getdeviceinfo_res {
262 struct nfs4_sequence_res seq_res;
263 struct pnfs_device *pdev;
267 struct nfs4_layoutcommit_args {
268 struct nfs4_sequence_args seq_args;
269 nfs4_stateid stateid;
270 __u64 lastbytewritten;
273 size_t layoutupdate_len;
274 struct page *layoutupdate_page;
275 struct page **layoutupdate_pages;
278 struct nfs4_layoutcommit_res {
279 struct nfs4_sequence_res seq_res;
280 struct nfs_fattr *fattr;
281 const struct nfs_server *server;
285 struct nfs4_layoutcommit_data {
286 struct rpc_task task;
287 struct nfs_fattr fattr;
288 struct list_head lseg_list;
289 struct rpc_cred *cred;
291 struct nfs4_layoutcommit_args args;
292 struct nfs4_layoutcommit_res res;
295 struct nfs4_layoutreturn_args {
296 struct nfs4_sequence_args seq_args;
297 struct pnfs_layout_hdr *layout;
299 struct pnfs_layout_range range;
300 nfs4_stateid stateid;
304 struct nfs4_layoutreturn_res {
305 struct nfs4_sequence_res seq_res;
307 nfs4_stateid stateid;
310 struct nfs4_layoutreturn {
311 struct nfs4_layoutreturn_args args;
312 struct nfs4_layoutreturn_res res;
313 struct rpc_cred *cred;
314 struct nfs_client *clp;
319 struct stateowner_id {
325 * Arguments to the open call.
327 struct nfs_openargs {
328 struct nfs4_sequence_args seq_args;
329 const struct nfs_fh * fh;
330 struct nfs_seqid * seqid;
336 struct stateowner_id id;
339 struct iattr * attrs; /* UNCHECKED, GUARDED */
340 nfs4_verifier verifier; /* EXCLUSIVE */
342 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
343 fmode_t delegation_type; /* CLAIM_PREVIOUS */
345 const struct qstr * name;
346 const struct nfs_server *server; /* Needed for ID mapping */
348 const u32 * open_bitmap;
350 enum createmode4 createmode;
351 const struct nfs4_label *label;
355 struct nfs4_sequence_res seq_res;
356 nfs4_stateid stateid;
358 struct nfs4_change_info cinfo;
360 struct nfs_fattr * f_attr;
361 struct nfs4_label *f_label;
362 struct nfs_seqid * seqid;
363 const struct nfs_server *server;
364 fmode_t delegation_type;
365 nfs4_stateid delegation;
368 __u32 attrset[NFS4_BITMAP_SIZE];
369 struct nfs4_string *owner;
370 struct nfs4_string *group_owner;
371 __u32 access_request;
372 __u32 access_supported;
377 * Arguments to the open_confirm call.
379 struct nfs_open_confirmargs {
380 struct nfs4_sequence_args seq_args;
381 const struct nfs_fh * fh;
382 nfs4_stateid * stateid;
383 struct nfs_seqid * seqid;
386 struct nfs_open_confirmres {
387 struct nfs4_sequence_res seq_res;
388 nfs4_stateid stateid;
389 struct nfs_seqid * seqid;
393 * Arguments to the close call.
395 struct nfs_closeargs {
396 struct nfs4_sequence_args seq_args;
398 nfs4_stateid stateid;
399 struct nfs_seqid * seqid;
405 struct nfs_closeres {
406 struct nfs4_sequence_res seq_res;
407 nfs4_stateid stateid;
408 struct nfs_fattr * fattr;
409 struct nfs_seqid * seqid;
410 const struct nfs_server *server;
413 * * Arguments to the lock,lockt, and locku call.
421 struct nfs_lock_args {
422 struct nfs4_sequence_args seq_args;
424 struct file_lock * fl;
425 struct nfs_seqid * lock_seqid;
426 nfs4_stateid lock_stateid;
427 struct nfs_seqid * open_seqid;
428 nfs4_stateid open_stateid;
429 struct nfs_lowner lock_owner;
430 unsigned char block : 1;
431 unsigned char reclaim : 1;
432 unsigned char new_lock : 1;
433 unsigned char new_lock_owner : 1;
436 struct nfs_lock_res {
437 struct nfs4_sequence_res seq_res;
438 nfs4_stateid stateid;
439 struct nfs_seqid * lock_seqid;
440 struct nfs_seqid * open_seqid;
443 struct nfs_locku_args {
444 struct nfs4_sequence_args seq_args;
446 struct file_lock * fl;
447 struct nfs_seqid * seqid;
448 nfs4_stateid stateid;
451 struct nfs_locku_res {
452 struct nfs4_sequence_res seq_res;
453 nfs4_stateid stateid;
454 struct nfs_seqid * seqid;
457 struct nfs_lockt_args {
458 struct nfs4_sequence_args seq_args;
460 struct file_lock * fl;
461 struct nfs_lowner lock_owner;
464 struct nfs_lockt_res {
465 struct nfs4_sequence_res seq_res;
466 struct file_lock * denied; /* LOCK, LOCKT failed */
469 struct nfs_release_lockowner_args {
470 struct nfs4_sequence_args seq_args;
471 struct nfs_lowner lock_owner;
474 struct nfs_release_lockowner_res {
475 struct nfs4_sequence_res seq_res;
478 struct nfs4_delegreturnargs {
479 struct nfs4_sequence_args seq_args;
480 const struct nfs_fh *fhandle;
481 const nfs4_stateid *stateid;
485 struct nfs4_delegreturnres {
486 struct nfs4_sequence_res seq_res;
487 struct nfs_fattr * fattr;
488 const struct nfs_server *server;
492 * Arguments to the write call.
494 struct nfs_write_verifier {
498 struct nfs_writeverf {
499 struct nfs_write_verifier verifier;
500 enum nfs3_stable_how committed;
504 * Arguments shared by the read and write call.
506 struct nfs_pgio_args {
507 struct nfs4_sequence_args seq_args;
509 struct nfs_open_context *context;
510 struct nfs_lock_context *lock_context;
511 nfs4_stateid stateid;
515 struct page ** pages;
516 const u32 * bitmask; /* used by write */
517 enum nfs3_stable_how stable; /* used by write */
520 struct nfs_pgio_res {
521 struct nfs4_sequence_res seq_res;
522 struct nfs_fattr * fattr;
525 int eof; /* used by read */
526 struct nfs_writeverf * verf; /* used by write */
527 const struct nfs_server *server; /* used by write */
532 * Arguments to the commit call.
534 struct nfs_commitargs {
535 struct nfs4_sequence_args seq_args;
542 struct nfs_commitres {
543 struct nfs4_sequence_res seq_res;
545 struct nfs_fattr *fattr;
546 struct nfs_writeverf *verf;
547 const struct nfs_server *server;
551 * Common arguments to the unlink call
553 struct nfs_removeargs {
554 struct nfs4_sequence_args seq_args;
555 const struct nfs_fh *fh;
559 struct nfs_removeres {
560 struct nfs4_sequence_res seq_res;
561 const struct nfs_server *server;
562 struct nfs_fattr *dir_attr;
563 struct nfs4_change_info cinfo;
567 * Common arguments to the rename call
569 struct nfs_renameargs {
570 struct nfs4_sequence_args seq_args;
571 const struct nfs_fh *old_dir;
572 const struct nfs_fh *new_dir;
573 const struct qstr *old_name;
574 const struct qstr *new_name;
577 struct nfs_renameres {
578 struct nfs4_sequence_res seq_res;
579 const struct nfs_server *server;
580 struct nfs4_change_info old_cinfo;
581 struct nfs_fattr *old_fattr;
582 struct nfs4_change_info new_cinfo;
583 struct nfs_fattr *new_fattr;
586 /* parsed sec= options */
587 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
588 struct nfs_auth_info {
589 unsigned int flavor_len;
590 rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS];
594 * Argument struct for decode_entry function
604 struct nfs_fattr * fattr;
605 struct nfs4_label *label;
606 unsigned char d_type;
607 struct nfs_server * server;
611 * The following types are for NFSv2 only.
613 struct nfs_sattrargs {
615 struct iattr * sattr;
618 struct nfs_diropargs {
624 struct nfs_createargs {
628 struct iattr * sattr;
631 struct nfs_setattrargs {
632 struct nfs4_sequence_args seq_args;
634 nfs4_stateid stateid;
636 const struct nfs_server * server; /* Needed for name mapping */
638 const struct nfs4_label *label;
641 struct nfs_setaclargs {
642 struct nfs4_sequence_args seq_args;
645 unsigned int acl_pgbase;
646 struct page ** acl_pages;
649 struct nfs_setaclres {
650 struct nfs4_sequence_res seq_res;
653 struct nfs_getaclargs {
654 struct nfs4_sequence_args seq_args;
657 unsigned int acl_pgbase;
658 struct page ** acl_pages;
661 /* getxattr ACL interface flags */
662 #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
663 struct nfs_getaclres {
664 struct nfs4_sequence_res seq_res;
666 size_t acl_data_offset;
668 struct page * acl_scratch;
671 struct nfs_setattrres {
672 struct nfs4_sequence_res seq_res;
673 struct nfs_fattr * fattr;
674 struct nfs4_label *label;
675 const struct nfs_server * server;
678 struct nfs_linkargs {
679 struct nfs_fh * fromfh;
680 struct nfs_fh * tofh;
685 struct nfs_symlinkargs {
686 struct nfs_fh * fromfh;
687 const char * fromname;
688 unsigned int fromlen;
689 struct page ** pages;
690 unsigned int pathlen;
691 struct iattr * sattr;
694 struct nfs_readdirargs {
698 struct page ** pages;
701 struct nfs3_getaclargs {
704 struct page ** pages;
707 struct nfs3_setaclargs {
708 struct inode * inode;
710 struct posix_acl * acl_access;
711 struct posix_acl * acl_default;
714 struct page ** pages;
719 struct nfs_fattr * fattr;
722 struct nfs_readlinkargs {
726 struct page ** pages;
729 struct nfs3_sattrargs {
731 struct iattr * sattr;
733 struct timespec guardtime;
736 struct nfs3_diropargs {
742 struct nfs3_accessargs {
747 struct nfs3_createargs {
751 struct iattr * sattr;
752 enum nfs3_createmode createmode;
756 struct nfs3_mkdirargs {
760 struct iattr * sattr;
763 struct nfs3_symlinkargs {
764 struct nfs_fh * fromfh;
765 const char * fromname;
766 unsigned int fromlen;
767 struct page ** pages;
768 unsigned int pathlen;
769 struct iattr * sattr;
772 struct nfs3_mknodargs {
776 enum nfs3_ftype type;
777 struct iattr * sattr;
781 struct nfs3_linkargs {
782 struct nfs_fh * fromfh;
783 struct nfs_fh * tofh;
788 struct nfs3_readdirargs {
794 struct page ** pages;
797 struct nfs3_diropres {
798 struct nfs_fattr * dir_attr;
800 struct nfs_fattr * fattr;
803 struct nfs3_accessres {
804 struct nfs_fattr * fattr;
808 struct nfs3_readlinkargs {
812 struct page ** pages;
815 struct nfs3_linkres {
816 struct nfs_fattr * dir_attr;
817 struct nfs_fattr * fattr;
820 struct nfs3_readdirres {
821 struct nfs_fattr * dir_attr;
826 struct nfs3_getaclres {
827 struct nfs_fattr * fattr;
829 unsigned int acl_access_count;
830 unsigned int acl_default_count;
831 struct posix_acl * acl_access;
832 struct posix_acl * acl_default;
835 #if IS_ENABLED(CONFIG_NFS_V4)
837 typedef u64 clientid4;
839 struct nfs4_accessargs {
840 struct nfs4_sequence_args seq_args;
841 const struct nfs_fh * fh;
846 struct nfs4_accessres {
847 struct nfs4_sequence_res seq_res;
848 const struct nfs_server * server;
849 struct nfs_fattr * fattr;
854 struct nfs4_create_arg {
855 struct nfs4_sequence_args seq_args;
859 struct page ** pages;
861 } symlink; /* NF4LNK */
865 } device; /* NF4BLK, NF4CHR */
867 const struct qstr * name;
868 const struct nfs_server * server;
869 const struct iattr * attrs;
870 const struct nfs_fh * dir_fh;
872 const struct nfs4_label *label;
875 struct nfs4_create_res {
876 struct nfs4_sequence_res seq_res;
877 const struct nfs_server * server;
879 struct nfs_fattr * fattr;
880 struct nfs4_label *label;
881 struct nfs4_change_info dir_cinfo;
884 struct nfs4_fsinfo_arg {
885 struct nfs4_sequence_args seq_args;
886 const struct nfs_fh * fh;
890 struct nfs4_fsinfo_res {
891 struct nfs4_sequence_res seq_res;
892 struct nfs_fsinfo *fsinfo;
895 struct nfs4_getattr_arg {
896 struct nfs4_sequence_args seq_args;
897 const struct nfs_fh * fh;
901 struct nfs4_getattr_res {
902 struct nfs4_sequence_res seq_res;
903 const struct nfs_server * server;
904 struct nfs_fattr * fattr;
905 struct nfs4_label *label;
908 struct nfs4_link_arg {
909 struct nfs4_sequence_args seq_args;
910 const struct nfs_fh * fh;
911 const struct nfs_fh * dir_fh;
912 const struct qstr * name;
916 struct nfs4_link_res {
917 struct nfs4_sequence_res seq_res;
918 const struct nfs_server * server;
919 struct nfs_fattr * fattr;
920 struct nfs4_label *label;
921 struct nfs4_change_info cinfo;
922 struct nfs_fattr * dir_attr;
926 struct nfs4_lookup_arg {
927 struct nfs4_sequence_args seq_args;
928 const struct nfs_fh * dir_fh;
929 const struct qstr * name;
933 struct nfs4_lookup_res {
934 struct nfs4_sequence_res seq_res;
935 const struct nfs_server * server;
936 struct nfs_fattr * fattr;
938 struct nfs4_label *label;
941 struct nfs4_lookup_root_arg {
942 struct nfs4_sequence_args seq_args;
946 struct nfs4_pathconf_arg {
947 struct nfs4_sequence_args seq_args;
948 const struct nfs_fh * fh;
952 struct nfs4_pathconf_res {
953 struct nfs4_sequence_res seq_res;
954 struct nfs_pathconf *pathconf;
957 struct nfs4_readdir_arg {
958 struct nfs4_sequence_args seq_args;
959 const struct nfs_fh * fh;
961 nfs4_verifier verifier;
963 struct page ** pages; /* zero-copy data */
964 unsigned int pgbase; /* zero-copy data */
969 struct nfs4_readdir_res {
970 struct nfs4_sequence_res seq_res;
971 nfs4_verifier verifier;
975 struct nfs4_readlink {
976 struct nfs4_sequence_args seq_args;
977 const struct nfs_fh * fh;
979 unsigned int pglen; /* zero-copy data */
980 struct page ** pages; /* zero-copy data */
983 struct nfs4_readlink_res {
984 struct nfs4_sequence_res seq_res;
987 struct nfs4_setclientid {
988 const nfs4_verifier * sc_verifier;
990 unsigned int sc_netid_len;
991 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
992 unsigned int sc_uaddr_len;
993 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
994 struct nfs_client *sc_clnt;
995 struct rpc_cred *sc_cred;
998 struct nfs4_setclientid_res {
1000 nfs4_verifier confirm;
1003 struct nfs4_statfs_arg {
1004 struct nfs4_sequence_args seq_args;
1005 const struct nfs_fh * fh;
1006 const u32 * bitmask;
1009 struct nfs4_statfs_res {
1010 struct nfs4_sequence_res seq_res;
1011 struct nfs_fsstat *fsstat;
1014 struct nfs4_server_caps_arg {
1015 struct nfs4_sequence_args seq_args;
1016 struct nfs_fh *fhandle;
1019 struct nfs4_server_caps_res {
1020 struct nfs4_sequence_res seq_res;
1021 u32 attr_bitmask[3];
1028 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1029 struct nfs4_pathname {
1030 unsigned int ncomponents;
1031 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1034 #define NFS4_FS_LOCATION_MAXSERVERS 10
1035 struct nfs4_fs_location {
1036 unsigned int nservers;
1037 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1038 struct nfs4_pathname rootpath;
1041 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1042 struct nfs4_fs_locations {
1043 struct nfs_fattr fattr;
1044 const struct nfs_server *server;
1045 struct nfs4_pathname fs_path;
1047 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1050 struct nfs4_fs_locations_arg {
1051 struct nfs4_sequence_args seq_args;
1052 const struct nfs_fh *dir_fh;
1053 const struct nfs_fh *fh;
1054 const struct qstr *name;
1058 unsigned char migration:1, renew:1;
1061 struct nfs4_fs_locations_res {
1062 struct nfs4_sequence_res seq_res;
1063 struct nfs4_fs_locations *fs_locations;
1064 unsigned char migration:1, renew:1;
1067 struct nfs4_secinfo4 {
1069 struct rpcsec_gss_info flavor_info;
1072 struct nfs4_secinfo_flavors {
1073 unsigned int num_flavors;
1074 struct nfs4_secinfo4 flavors[0];
1077 struct nfs4_secinfo_arg {
1078 struct nfs4_sequence_args seq_args;
1079 const struct nfs_fh *dir_fh;
1080 const struct qstr *name;
1083 struct nfs4_secinfo_res {
1084 struct nfs4_sequence_res seq_res;
1085 struct nfs4_secinfo_flavors *flavors;
1088 struct nfs4_fsid_present_arg {
1089 struct nfs4_sequence_args seq_args;
1090 const struct nfs_fh *fh;
1092 unsigned char renew:1;
1095 struct nfs4_fsid_present_res {
1096 struct nfs4_sequence_res seq_res;
1098 unsigned char renew:1;
1101 #endif /* CONFIG_NFS_V4 */
1108 #ifdef CONFIG_NFS_V4_1
1110 struct pnfs_commit_bucket {
1111 struct list_head written;
1112 struct list_head committing;
1113 struct pnfs_layout_segment *wlseg;
1114 struct pnfs_layout_segment *clseg;
1115 struct nfs_writeverf direct_verf;
1118 struct pnfs_ds_commit_info {
1122 struct pnfs_commit_bucket *buckets;
1125 #define NFS4_OP_MAP_NUM_LONGS \
1126 DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
1127 #define NFS4_OP_MAP_NUM_WORDS \
1128 (NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
1129 struct nfs4_op_map {
1131 unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
1132 u32 words[NFS4_OP_MAP_NUM_WORDS];
1136 struct nfs41_state_protection {
1138 struct nfs4_op_map enforce;
1139 struct nfs4_op_map allow;
1142 struct nfs41_exchange_id_args {
1143 struct nfs_client *client;
1144 nfs4_verifier *verifier;
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_args {
1167 struct nfs_client *client;
1168 struct nfs4_sessionid sessionid;
1170 bool use_conn_in_rdma_mode;
1173 struct nfs41_bind_conn_to_session_res {
1174 struct nfs4_sessionid sessionid;
1176 bool use_conn_in_rdma_mode;
1179 struct nfs41_exchange_id_res {
1183 struct nfs41_server_owner *server_owner;
1184 struct nfs41_server_scope *server_scope;
1185 struct nfs41_impl_id *impl_id;
1186 struct nfs41_state_protection state_protect;
1189 struct nfs41_create_session_args {
1190 struct nfs_client *client;
1194 uint32_t cb_program;
1195 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1196 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1199 struct nfs41_create_session_res {
1200 struct nfs4_sessionid sessionid;
1203 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1204 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1207 struct nfs41_reclaim_complete_args {
1208 struct nfs4_sequence_args seq_args;
1209 /* In the future extend to include curr_fh for use with migration */
1210 unsigned char one_fs:1;
1213 struct nfs41_reclaim_complete_res {
1214 struct nfs4_sequence_res seq_res;
1217 #define SECINFO_STYLE_CURRENT_FH 0
1218 #define SECINFO_STYLE_PARENT 1
1219 struct nfs41_secinfo_no_name_args {
1220 struct nfs4_sequence_args seq_args;
1224 struct nfs41_test_stateid_args {
1225 struct nfs4_sequence_args seq_args;
1226 nfs4_stateid *stateid;
1229 struct nfs41_test_stateid_res {
1230 struct nfs4_sequence_res seq_res;
1231 unsigned int status;
1234 struct nfs41_free_stateid_args {
1235 struct nfs4_sequence_args seq_args;
1236 nfs4_stateid stateid;
1239 struct nfs41_free_stateid_res {
1240 struct nfs4_sequence_res seq_res;
1241 unsigned int status;
1245 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1247 kfree(cinfo->buckets);
1252 struct pnfs_ds_commit_info {
1256 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1260 #endif /* CONFIG_NFS_V4_1 */
1262 #ifdef CONFIG_NFS_V4_2
1263 struct nfs42_falloc_args {
1264 struct nfs4_sequence_args seq_args;
1266 struct nfs_fh *falloc_fh;
1267 nfs4_stateid falloc_stateid;
1270 const u32 *falloc_bitmask;
1273 struct nfs42_falloc_res {
1274 struct nfs4_sequence_res seq_res;
1275 unsigned int status;
1277 struct nfs_fattr *falloc_fattr;
1278 const struct nfs_server *falloc_server;
1281 struct nfs42_seek_args {
1282 struct nfs4_sequence_args seq_args;
1284 struct nfs_fh *sa_fh;
1285 nfs4_stateid sa_stateid;
1290 struct nfs42_seek_res {
1291 struct nfs4_sequence_res seq_res;
1292 unsigned int status;
1301 #define NFS_PAGEVEC_SIZE (8U)
1303 struct nfs_page_array {
1304 struct page **pagevec;
1305 unsigned int npages; /* Max length of pagevec */
1306 struct page *page_array[NFS_PAGEVEC_SIZE];
1309 /* used as flag bits in nfs_pgio_header */
1311 NFS_IOHDR_ERROR = 0,
1316 struct nfs_pgio_header {
1317 struct inode *inode;
1318 struct rpc_cred *cred;
1319 struct list_head pages;
1320 struct nfs_page *req;
1321 struct nfs_writeverf verf; /* Used for writes */
1322 struct pnfs_layout_segment *lseg;
1324 const struct rpc_call_ops *mds_ops;
1325 void (*release) (struct nfs_pgio_header *hdr);
1326 const struct nfs_pgio_completion_ops *completion_ops;
1327 const struct nfs_rw_ops *rw_ops;
1328 struct nfs_direct_req *dreq;
1329 void *layout_private;
1331 /* fields protected by lock */
1333 int error; /* merge with pnfs_error */
1334 unsigned long good_bytes; /* boundary of good data */
1335 unsigned long flags;
1340 struct rpc_task task;
1341 struct nfs_fattr fattr;
1342 struct nfs_pgio_args args; /* argument struct */
1343 struct nfs_pgio_res res; /* result struct */
1344 unsigned long timestamp; /* For lease renewal */
1345 int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1346 __u64 mds_offset; /* Filelayout dense stripe */
1347 struct nfs_page_array page_array;
1348 struct nfs_client *ds_clp; /* pNFS data server */
1349 int ds_commit_idx; /* ds index if ds_clp is set */
1350 int pgio_mirror_idx;/* mirror index in pgio layer */
1353 struct nfs_mds_commit_info {
1355 unsigned long ncommit;
1356 struct list_head list;
1359 struct nfs_commit_data;
1361 struct nfs_commit_completion_ops {
1362 void (*error_cleanup) (struct nfs_inode *nfsi);
1363 void (*completion) (struct nfs_commit_data *data);
1366 struct nfs_commit_info {
1367 spinlock_t *lock; /* inode->i_lock */
1368 struct nfs_mds_commit_info *mds;
1369 struct pnfs_ds_commit_info *ds;
1370 struct nfs_direct_req *dreq; /* O_DIRECT request */
1371 const struct nfs_commit_completion_ops *completion_ops;
1374 struct nfs_commit_data {
1375 struct rpc_task task;
1376 struct inode *inode;
1377 struct rpc_cred *cred;
1378 struct nfs_fattr fattr;
1379 struct nfs_writeverf verf;
1380 struct list_head pages; /* Coalesced requests we wish to flush */
1381 struct list_head list; /* lists of struct nfs_write_data */
1382 struct nfs_direct_req *dreq; /* O_DIRECT request */
1383 struct nfs_commitargs args; /* argument struct */
1384 struct nfs_commitres res; /* result struct */
1385 struct nfs_open_context *context;
1386 struct pnfs_layout_segment *lseg;
1387 struct nfs_client *ds_clp; /* pNFS data server */
1388 int ds_commit_index;
1390 const struct rpc_call_ops *mds_ops;
1391 const struct nfs_commit_completion_ops *completion_ops;
1392 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1395 struct nfs_pgio_completion_ops {
1396 void (*error_cleanup)(struct list_head *head);
1397 void (*init_hdr)(struct nfs_pgio_header *hdr);
1398 void (*completion)(struct nfs_pgio_header *hdr);
1401 struct nfs_unlinkdata {
1402 struct hlist_node list;
1403 struct nfs_removeargs args;
1404 struct nfs_removeres res;
1406 struct rpc_cred *cred;
1407 struct nfs_fattr dir_attr;
1411 struct nfs_renamedata {
1412 struct nfs_renameargs args;
1413 struct nfs_renameres res;
1414 struct rpc_cred *cred;
1415 struct inode *old_dir;
1416 struct dentry *old_dentry;
1417 struct nfs_fattr old_fattr;
1418 struct inode *new_dir;
1419 struct dentry *new_dentry;
1420 struct nfs_fattr new_fattr;
1421 void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1425 struct nfs_access_entry;
1428 struct nfs_subversion;
1429 struct nfs_mount_info;
1430 struct nfs_client_initdata;
1431 struct nfs_pageio_descriptor;
1434 * RPC procedure vector for NFSv2/NFSv3 demuxing
1436 struct nfs_rpc_ops {
1437 u32 version; /* Protocol version */
1438 const struct dentry_operations *dentry_ops;
1439 const struct inode_operations *dir_inode_ops;
1440 const struct inode_operations *file_inode_ops;
1441 const struct file_operations *file_ops;
1443 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1444 struct nfs_fsinfo *);
1445 struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1446 struct nfs_fh *, struct nfs_fattr *);
1447 struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1448 struct nfs_subversion *);
1449 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1450 struct nfs_fattr *, struct nfs4_label *);
1451 int (*setattr) (struct dentry *, struct nfs_fattr *,
1453 int (*lookup) (struct inode *, struct qstr *,
1454 struct nfs_fh *, struct nfs_fattr *,
1455 struct nfs4_label *);
1456 int (*access) (struct inode *, struct nfs_access_entry *);
1457 int (*readlink)(struct inode *, struct page *, unsigned int,
1459 int (*create) (struct inode *, struct dentry *,
1460 struct iattr *, int);
1461 int (*remove) (struct inode *, struct qstr *);
1462 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
1463 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1464 int (*unlink_done) (struct rpc_task *, struct inode *);
1465 void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
1466 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1467 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1468 int (*link) (struct inode *, struct inode *, struct qstr *);
1469 int (*symlink) (struct inode *, struct dentry *, struct page *,
1470 unsigned int, struct iattr *);
1471 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1472 int (*rmdir) (struct inode *, struct qstr *);
1473 int (*readdir) (struct dentry *, struct rpc_cred *,
1474 u64, struct page **, unsigned int, int);
1475 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1477 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1478 struct nfs_fsstat *);
1479 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1480 struct nfs_fsinfo *);
1481 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1482 struct nfs_pathconf *);
1483 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1484 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1485 int (*pgio_rpc_prepare)(struct rpc_task *,
1486 struct nfs_pgio_header *);
1487 void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1488 int (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1489 void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
1490 int (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1491 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1492 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1493 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1494 int (*lock)(struct file *, int, struct file_lock *);
1495 int (*lock_check_bounds)(const struct file_lock *);
1496 void (*clear_acl_cache)(struct inode *);
1497 void (*close_context)(struct nfs_open_context *ctx, int);
1498 struct inode * (*open_context) (struct inode *dir,
1499 struct nfs_open_context *ctx,
1501 struct iattr *iattr,
1503 int (*have_delegation)(struct inode *, fmode_t);
1504 int (*return_delegation)(struct inode *);
1505 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1507 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1509 void (*free_client) (struct nfs_client *);
1510 struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1511 struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1512 struct nfs_fattr *, rpc_authflavor_t);
1516 * NFS_CALL(getattr, inode, (fattr));
1518 * NFS_PROTO(inode)->getattr(fattr);
1520 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1523 * Function vectors etc. for the NFS client
1525 extern const struct nfs_rpc_ops nfs_v2_clientops;
1526 extern const struct nfs_rpc_ops nfs_v3_clientops;
1527 extern const struct nfs_rpc_ops nfs_v4_clientops;
1528 extern const struct rpc_version nfs_version2;
1529 extern const struct rpc_version nfs_version3;
1530 extern const struct rpc_version nfs_version4;
1532 extern const struct rpc_version nfsacl_version3;
1533 extern const struct rpc_program nfsacl_program;