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_getdevicelist_args {
256 struct nfs4_sequence_args seq_args;
257 const struct nfs_fh *fh;
261 struct nfs4_getdevicelist_res {
262 struct nfs4_sequence_res seq_res;
263 struct pnfs_devicelist *devlist;
266 struct nfs4_getdeviceinfo_args {
267 struct nfs4_sequence_args seq_args;
268 struct pnfs_device *pdev;
271 struct nfs4_getdeviceinfo_res {
272 struct nfs4_sequence_res seq_res;
273 struct pnfs_device *pdev;
276 struct nfs4_layoutcommit_args {
277 struct nfs4_sequence_args seq_args;
278 nfs4_stateid stateid;
279 __u64 lastbytewritten;
284 struct nfs4_layoutcommit_res {
285 struct nfs4_sequence_res seq_res;
286 struct nfs_fattr *fattr;
287 const struct nfs_server *server;
291 struct nfs4_layoutcommit_data {
292 struct rpc_task task;
293 struct nfs_fattr fattr;
294 struct list_head lseg_list;
295 struct rpc_cred *cred;
296 struct nfs4_layoutcommit_args args;
297 struct nfs4_layoutcommit_res res;
300 struct nfs4_layoutreturn_args {
301 struct nfs4_sequence_args seq_args;
302 struct pnfs_layout_hdr *layout;
304 nfs4_stateid stateid;
308 struct nfs4_layoutreturn_res {
309 struct nfs4_sequence_res seq_res;
311 nfs4_stateid stateid;
314 struct nfs4_layoutreturn {
315 struct nfs4_layoutreturn_args args;
316 struct nfs4_layoutreturn_res res;
317 struct rpc_cred *cred;
318 struct nfs_client *clp;
322 struct stateowner_id {
328 * Arguments to the open call.
330 struct nfs_openargs {
331 struct nfs4_sequence_args seq_args;
332 const struct nfs_fh * fh;
333 struct nfs_seqid * seqid;
338 struct stateowner_id id;
341 struct iattr * attrs; /* UNCHECKED, GUARDED */
342 nfs4_verifier verifier; /* EXCLUSIVE */
344 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
345 fmode_t delegation_type; /* CLAIM_PREVIOUS */
347 const struct qstr * name;
348 const struct nfs_server *server; /* Needed for ID mapping */
350 const u32 * open_bitmap;
352 enum createmode4 createmode;
353 const struct nfs4_label *label;
357 struct nfs4_sequence_res seq_res;
358 nfs4_stateid stateid;
360 struct nfs4_change_info cinfo;
362 struct nfs_fattr * f_attr;
363 struct nfs4_label *f_label;
364 struct nfs_seqid * seqid;
365 const struct nfs_server *server;
366 fmode_t delegation_type;
367 nfs4_stateid delegation;
370 __u32 attrset[NFS4_BITMAP_SIZE];
371 struct nfs4_string *owner;
372 struct nfs4_string *group_owner;
373 __u32 access_request;
374 __u32 access_supported;
379 * Arguments to the open_confirm call.
381 struct nfs_open_confirmargs {
382 struct nfs4_sequence_args seq_args;
383 const struct nfs_fh * fh;
384 nfs4_stateid * stateid;
385 struct nfs_seqid * seqid;
388 struct nfs_open_confirmres {
389 struct nfs4_sequence_res seq_res;
390 nfs4_stateid stateid;
391 struct nfs_seqid * seqid;
395 * Arguments to the close call.
397 struct nfs_closeargs {
398 struct nfs4_sequence_args seq_args;
400 nfs4_stateid * stateid;
401 struct nfs_seqid * seqid;
406 struct nfs_closeres {
407 struct nfs4_sequence_res seq_res;
408 nfs4_stateid stateid;
409 struct nfs_fattr * fattr;
410 struct nfs_seqid * seqid;
411 const struct nfs_server *server;
414 * * Arguments to the lock,lockt, and locku call.
422 struct nfs_lock_args {
423 struct nfs4_sequence_args seq_args;
425 struct file_lock * fl;
426 struct nfs_seqid * lock_seqid;
427 nfs4_stateid * lock_stateid;
428 struct nfs_seqid * open_seqid;
429 nfs4_stateid * open_stateid;
430 struct nfs_lowner lock_owner;
431 unsigned char block : 1;
432 unsigned char reclaim : 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;
524 int eof; /* used by read */
525 struct nfs_writeverf * verf; /* used by write */
526 const struct nfs_server *server; /* used by write */
531 * Arguments to the commit call.
533 struct nfs_commitargs {
534 struct nfs4_sequence_args seq_args;
541 struct nfs_commitres {
542 struct nfs4_sequence_res seq_res;
543 struct nfs_fattr *fattr;
544 struct nfs_writeverf *verf;
545 const struct nfs_server *server;
549 * Common arguments to the unlink call
551 struct nfs_removeargs {
552 struct nfs4_sequence_args seq_args;
553 const struct nfs_fh *fh;
557 struct nfs_removeres {
558 struct nfs4_sequence_res seq_res;
559 const struct nfs_server *server;
560 struct nfs_fattr *dir_attr;
561 struct nfs4_change_info cinfo;
565 * Common arguments to the rename call
567 struct nfs_renameargs {
568 struct nfs4_sequence_args seq_args;
569 const struct nfs_fh *old_dir;
570 const struct nfs_fh *new_dir;
571 const struct qstr *old_name;
572 const struct qstr *new_name;
575 struct nfs_renameres {
576 struct nfs4_sequence_res seq_res;
577 const struct nfs_server *server;
578 struct nfs4_change_info old_cinfo;
579 struct nfs_fattr *old_fattr;
580 struct nfs4_change_info new_cinfo;
581 struct nfs_fattr *new_fattr;
584 /* parsed sec= options */
585 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
586 struct nfs_auth_info {
587 unsigned int flavor_len;
588 rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS];
592 * Argument struct for decode_entry function
602 struct nfs_fattr * fattr;
603 struct nfs4_label *label;
604 unsigned char d_type;
605 struct nfs_server * server;
609 * The following types are for NFSv2 only.
611 struct nfs_sattrargs {
613 struct iattr * sattr;
616 struct nfs_diropargs {
622 struct nfs_createargs {
626 struct iattr * sattr;
629 struct nfs_setattrargs {
630 struct nfs4_sequence_args seq_args;
632 nfs4_stateid stateid;
634 const struct nfs_server * server; /* Needed for name mapping */
636 const struct nfs4_label *label;
639 struct nfs_setaclargs {
640 struct nfs4_sequence_args seq_args;
643 unsigned int acl_pgbase;
644 struct page ** acl_pages;
647 struct nfs_setaclres {
648 struct nfs4_sequence_res seq_res;
651 struct nfs_getaclargs {
652 struct nfs4_sequence_args seq_args;
655 unsigned int acl_pgbase;
656 struct page ** acl_pages;
659 /* getxattr ACL interface flags */
660 #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
661 struct nfs_getaclres {
662 struct nfs4_sequence_res seq_res;
664 size_t acl_data_offset;
666 struct page * acl_scratch;
669 struct nfs_setattrres {
670 struct nfs4_sequence_res seq_res;
671 struct nfs_fattr * fattr;
672 struct nfs4_label *label;
673 const struct nfs_server * server;
676 struct nfs_linkargs {
677 struct nfs_fh * fromfh;
678 struct nfs_fh * tofh;
683 struct nfs_symlinkargs {
684 struct nfs_fh * fromfh;
685 const char * fromname;
686 unsigned int fromlen;
687 struct page ** pages;
688 unsigned int pathlen;
689 struct iattr * sattr;
692 struct nfs_readdirargs {
696 struct page ** pages;
699 struct nfs3_getaclargs {
702 struct page ** pages;
705 struct nfs3_setaclargs {
706 struct inode * inode;
708 struct posix_acl * acl_access;
709 struct posix_acl * acl_default;
712 struct page ** pages;
717 struct nfs_fattr * fattr;
720 struct nfs_readlinkargs {
724 struct page ** pages;
727 struct nfs3_sattrargs {
729 struct iattr * sattr;
731 struct timespec guardtime;
734 struct nfs3_diropargs {
740 struct nfs3_accessargs {
745 struct nfs3_createargs {
749 struct iattr * sattr;
750 enum nfs3_createmode createmode;
754 struct nfs3_mkdirargs {
758 struct iattr * sattr;
761 struct nfs3_symlinkargs {
762 struct nfs_fh * fromfh;
763 const char * fromname;
764 unsigned int fromlen;
765 struct page ** pages;
766 unsigned int pathlen;
767 struct iattr * sattr;
770 struct nfs3_mknodargs {
774 enum nfs3_ftype type;
775 struct iattr * sattr;
779 struct nfs3_linkargs {
780 struct nfs_fh * fromfh;
781 struct nfs_fh * tofh;
786 struct nfs3_readdirargs {
792 struct page ** pages;
795 struct nfs3_diropres {
796 struct nfs_fattr * dir_attr;
798 struct nfs_fattr * fattr;
801 struct nfs3_accessres {
802 struct nfs_fattr * fattr;
806 struct nfs3_readlinkargs {
810 struct page ** pages;
813 struct nfs3_linkres {
814 struct nfs_fattr * dir_attr;
815 struct nfs_fattr * fattr;
818 struct nfs3_readdirres {
819 struct nfs_fattr * dir_attr;
824 struct nfs3_getaclres {
825 struct nfs_fattr * fattr;
827 unsigned int acl_access_count;
828 unsigned int acl_default_count;
829 struct posix_acl * acl_access;
830 struct posix_acl * acl_default;
833 #if IS_ENABLED(CONFIG_NFS_V4)
835 typedef u64 clientid4;
837 struct nfs4_accessargs {
838 struct nfs4_sequence_args seq_args;
839 const struct nfs_fh * fh;
844 struct nfs4_accessres {
845 struct nfs4_sequence_res seq_res;
846 const struct nfs_server * server;
847 struct nfs_fattr * fattr;
852 struct nfs4_create_arg {
853 struct nfs4_sequence_args seq_args;
857 struct page ** pages;
859 } symlink; /* NF4LNK */
863 } device; /* NF4BLK, NF4CHR */
865 const struct qstr * name;
866 const struct nfs_server * server;
867 const struct iattr * attrs;
868 const struct nfs_fh * dir_fh;
870 const struct nfs4_label *label;
873 struct nfs4_create_res {
874 struct nfs4_sequence_res seq_res;
875 const struct nfs_server * server;
877 struct nfs_fattr * fattr;
878 struct nfs4_label *label;
879 struct nfs4_change_info dir_cinfo;
882 struct nfs4_fsinfo_arg {
883 struct nfs4_sequence_args seq_args;
884 const struct nfs_fh * fh;
888 struct nfs4_fsinfo_res {
889 struct nfs4_sequence_res seq_res;
890 struct nfs_fsinfo *fsinfo;
893 struct nfs4_getattr_arg {
894 struct nfs4_sequence_args seq_args;
895 const struct nfs_fh * fh;
899 struct nfs4_getattr_res {
900 struct nfs4_sequence_res seq_res;
901 const struct nfs_server * server;
902 struct nfs_fattr * fattr;
903 struct nfs4_label *label;
906 struct nfs4_link_arg {
907 struct nfs4_sequence_args seq_args;
908 const struct nfs_fh * fh;
909 const struct nfs_fh * dir_fh;
910 const struct qstr * name;
914 struct nfs4_link_res {
915 struct nfs4_sequence_res seq_res;
916 const struct nfs_server * server;
917 struct nfs_fattr * fattr;
918 struct nfs4_label *label;
919 struct nfs4_change_info cinfo;
920 struct nfs_fattr * dir_attr;
924 struct nfs4_lookup_arg {
925 struct nfs4_sequence_args seq_args;
926 const struct nfs_fh * dir_fh;
927 const struct qstr * name;
931 struct nfs4_lookup_res {
932 struct nfs4_sequence_res seq_res;
933 const struct nfs_server * server;
934 struct nfs_fattr * fattr;
936 struct nfs4_label *label;
939 struct nfs4_lookup_root_arg {
940 struct nfs4_sequence_args seq_args;
944 struct nfs4_pathconf_arg {
945 struct nfs4_sequence_args seq_args;
946 const struct nfs_fh * fh;
950 struct nfs4_pathconf_res {
951 struct nfs4_sequence_res seq_res;
952 struct nfs_pathconf *pathconf;
955 struct nfs4_readdir_arg {
956 struct nfs4_sequence_args seq_args;
957 const struct nfs_fh * fh;
959 nfs4_verifier verifier;
961 struct page ** pages; /* zero-copy data */
962 unsigned int pgbase; /* zero-copy data */
967 struct nfs4_readdir_res {
968 struct nfs4_sequence_res seq_res;
969 nfs4_verifier verifier;
973 struct nfs4_readlink {
974 struct nfs4_sequence_args seq_args;
975 const struct nfs_fh * fh;
977 unsigned int pglen; /* zero-copy data */
978 struct page ** pages; /* zero-copy data */
981 struct nfs4_readlink_res {
982 struct nfs4_sequence_res seq_res;
985 #define NFS4_SETCLIENTID_NAMELEN (127)
986 struct nfs4_setclientid {
987 const nfs4_verifier * sc_verifier;
988 unsigned int sc_name_len;
989 char sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
991 unsigned int sc_netid_len;
992 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
993 unsigned int sc_uaddr_len;
994 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
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;
1117 struct pnfs_ds_commit_info {
1121 struct pnfs_commit_bucket *buckets;
1124 #define NFS4_OP_MAP_NUM_LONGS \
1125 DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
1126 #define NFS4_OP_MAP_NUM_WORDS \
1127 (NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
1128 struct nfs4_op_map {
1130 unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
1131 u32 words[NFS4_OP_MAP_NUM_WORDS];
1135 struct nfs41_state_protection {
1137 struct nfs4_op_map enforce;
1138 struct nfs4_op_map allow;
1141 #define NFS4_EXCHANGE_ID_LEN (48)
1142 struct nfs41_exchange_id_args {
1143 struct nfs_client *client;
1144 nfs4_verifier *verifier;
1145 unsigned int id_len;
1146 char id[NFS4_EXCHANGE_ID_LEN];
1148 struct nfs41_state_protection state_protect;
1151 struct nfs41_server_owner {
1153 uint32_t major_id_sz;
1154 char major_id[NFS4_OPAQUE_LIMIT];
1157 struct nfs41_server_scope {
1158 uint32_t server_scope_sz;
1159 char server_scope[NFS4_OPAQUE_LIMIT];
1162 struct nfs41_impl_id {
1163 char domain[NFS4_OPAQUE_LIMIT + 1];
1164 char name[NFS4_OPAQUE_LIMIT + 1];
1165 struct nfstime4 date;
1168 struct nfs41_bind_conn_to_session_res {
1169 struct nfs4_session *session;
1171 bool use_conn_in_rdma_mode;
1174 struct nfs41_exchange_id_res {
1178 struct nfs41_server_owner *server_owner;
1179 struct nfs41_server_scope *server_scope;
1180 struct nfs41_impl_id *impl_id;
1181 struct nfs41_state_protection state_protect;
1184 struct nfs41_create_session_args {
1185 struct nfs_client *client;
1187 uint32_t cb_program;
1188 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1189 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1192 struct nfs41_create_session_res {
1193 struct nfs_client *client;
1196 struct nfs41_reclaim_complete_args {
1197 struct nfs4_sequence_args seq_args;
1198 /* In the future extend to include curr_fh for use with migration */
1199 unsigned char one_fs:1;
1202 struct nfs41_reclaim_complete_res {
1203 struct nfs4_sequence_res seq_res;
1206 #define SECINFO_STYLE_CURRENT_FH 0
1207 #define SECINFO_STYLE_PARENT 1
1208 struct nfs41_secinfo_no_name_args {
1209 struct nfs4_sequence_args seq_args;
1213 struct nfs41_test_stateid_args {
1214 struct nfs4_sequence_args seq_args;
1215 nfs4_stateid *stateid;
1218 struct nfs41_test_stateid_res {
1219 struct nfs4_sequence_res seq_res;
1220 unsigned int status;
1223 struct nfs41_free_stateid_args {
1224 struct nfs4_sequence_args seq_args;
1225 nfs4_stateid stateid;
1228 struct nfs41_free_stateid_res {
1229 struct nfs4_sequence_res seq_res;
1230 unsigned int status;
1235 struct pnfs_ds_commit_info {
1238 #endif /* CONFIG_NFS_V4_1 */
1242 #define NFS_PAGEVEC_SIZE (8U)
1244 struct nfs_page_array {
1245 struct page **pagevec;
1246 unsigned int npages; /* Max length of pagevec */
1247 struct page *page_array[NFS_PAGEVEC_SIZE];
1250 /* used as flag bits in nfs_pgio_header */
1252 NFS_IOHDR_ERROR = 0,
1255 NFS_IOHDR_NEED_COMMIT,
1256 NFS_IOHDR_NEED_RESCHED,
1259 struct nfs_pgio_header {
1260 struct inode *inode;
1261 struct rpc_cred *cred;
1262 struct list_head pages;
1263 struct list_head rpc_list;
1265 struct nfs_page *req;
1266 struct nfs_writeverf verf; /* Used for writes */
1267 struct pnfs_layout_segment *lseg;
1269 const struct rpc_call_ops *mds_ops;
1270 void (*release) (struct nfs_pgio_header *hdr);
1271 const struct nfs_pgio_completion_ops *completion_ops;
1272 const struct nfs_rw_ops *rw_ops;
1273 struct nfs_direct_req *dreq;
1274 void *layout_private;
1276 /* fields protected by lock */
1278 int error; /* merge with pnfs_error */
1279 unsigned long good_bytes; /* boundary of good data */
1280 unsigned long flags;
1283 struct nfs_pgio_data {
1284 struct nfs_pgio_header *header;
1285 struct list_head list;
1286 struct rpc_task task;
1287 struct nfs_fattr fattr;
1288 struct nfs_writeverf verf; /* Used for writes */
1289 struct nfs_pgio_args args; /* argument struct */
1290 struct nfs_pgio_res res; /* result struct */
1291 unsigned long timestamp; /* For lease renewal */
1292 int (*pgio_done_cb) (struct rpc_task *task, struct nfs_pgio_data *data);
1293 __u64 mds_offset; /* Filelayout dense stripe */
1294 struct nfs_page_array pages;
1295 struct nfs_client *ds_clp; /* pNFS data server */
1298 struct nfs_rw_header {
1299 struct nfs_pgio_header header;
1300 struct nfs_pgio_data rpc_data;
1303 struct nfs_mds_commit_info {
1305 unsigned long ncommit;
1306 struct list_head list;
1309 struct nfs_commit_data;
1311 struct nfs_commit_completion_ops {
1312 void (*error_cleanup) (struct nfs_inode *nfsi);
1313 void (*completion) (struct nfs_commit_data *data);
1316 struct nfs_commit_info {
1318 struct nfs_mds_commit_info *mds;
1319 struct pnfs_ds_commit_info *ds;
1320 struct nfs_direct_req *dreq; /* O_DIRECT request */
1321 const struct nfs_commit_completion_ops *completion_ops;
1324 struct nfs_commit_data {
1325 struct rpc_task task;
1326 struct inode *inode;
1327 struct rpc_cred *cred;
1328 struct nfs_fattr fattr;
1329 struct nfs_writeverf verf;
1330 struct list_head pages; /* Coalesced requests we wish to flush */
1331 struct list_head list; /* lists of struct nfs_write_data */
1332 struct nfs_direct_req *dreq; /* O_DIRECT request */
1333 struct nfs_commitargs args; /* argument struct */
1334 struct nfs_commitres res; /* result struct */
1335 struct nfs_open_context *context;
1336 struct pnfs_layout_segment *lseg;
1337 struct nfs_client *ds_clp; /* pNFS data server */
1338 int ds_commit_index;
1339 const struct rpc_call_ops *mds_ops;
1340 const struct nfs_commit_completion_ops *completion_ops;
1341 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1344 struct nfs_pgio_completion_ops {
1345 void (*error_cleanup)(struct list_head *head);
1346 void (*init_hdr)(struct nfs_pgio_header *hdr);
1347 void (*completion)(struct nfs_pgio_header *hdr);
1350 struct nfs_unlinkdata {
1351 struct hlist_node list;
1352 struct nfs_removeargs args;
1353 struct nfs_removeres res;
1355 struct rpc_cred *cred;
1356 struct nfs_fattr dir_attr;
1359 struct nfs_renamedata {
1360 struct nfs_renameargs args;
1361 struct nfs_renameres res;
1362 struct rpc_cred *cred;
1363 struct inode *old_dir;
1364 struct dentry *old_dentry;
1365 struct nfs_fattr old_fattr;
1366 struct inode *new_dir;
1367 struct dentry *new_dentry;
1368 struct nfs_fattr new_fattr;
1369 void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1372 struct nfs_access_entry;
1375 struct nfs_subversion;
1376 struct nfs_mount_info;
1377 struct nfs_client_initdata;
1378 struct nfs_pageio_descriptor;
1381 * RPC procedure vector for NFSv2/NFSv3 demuxing
1383 struct nfs_rpc_ops {
1384 u32 version; /* Protocol version */
1385 const struct dentry_operations *dentry_ops;
1386 const struct inode_operations *dir_inode_ops;
1387 const struct inode_operations *file_inode_ops;
1388 const struct file_operations *file_ops;
1390 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1391 struct nfs_fsinfo *);
1392 struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1393 struct nfs_fh *, struct nfs_fattr *);
1394 struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1395 struct nfs_subversion *);
1396 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1397 struct nfs_fattr *, struct nfs4_label *);
1398 int (*setattr) (struct dentry *, struct nfs_fattr *,
1400 int (*lookup) (struct inode *, struct qstr *,
1401 struct nfs_fh *, struct nfs_fattr *,
1402 struct nfs4_label *);
1403 int (*access) (struct inode *, struct nfs_access_entry *);
1404 int (*readlink)(struct inode *, struct page *, unsigned int,
1406 int (*create) (struct inode *, struct dentry *,
1407 struct iattr *, int);
1408 int (*remove) (struct inode *, struct qstr *);
1409 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
1410 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1411 int (*unlink_done) (struct rpc_task *, struct inode *);
1412 void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
1413 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1414 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1415 int (*link) (struct inode *, struct inode *, struct qstr *);
1416 int (*symlink) (struct inode *, struct dentry *, struct page *,
1417 unsigned int, struct iattr *);
1418 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1419 int (*rmdir) (struct inode *, struct qstr *);
1420 int (*readdir) (struct dentry *, struct rpc_cred *,
1421 u64, struct page **, unsigned int, int);
1422 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1424 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1425 struct nfs_fsstat *);
1426 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1427 struct nfs_fsinfo *);
1428 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1429 struct nfs_pathconf *);
1430 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1431 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1432 void (*read_setup) (struct nfs_pgio_data *, struct rpc_message *);
1433 int (*read_rpc_prepare)(struct rpc_task *, struct nfs_pgio_data *);
1434 int (*read_done) (struct rpc_task *, struct nfs_pgio_data *);
1435 void (*write_setup) (struct nfs_pgio_data *, struct rpc_message *);
1436 int (*write_rpc_prepare)(struct rpc_task *, struct nfs_pgio_data *);
1437 int (*write_done) (struct rpc_task *, struct nfs_pgio_data *);
1438 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1439 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1440 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1441 int (*lock)(struct file *, int, struct file_lock *);
1442 int (*lock_check_bounds)(const struct file_lock *);
1443 void (*clear_acl_cache)(struct inode *);
1444 void (*close_context)(struct nfs_open_context *ctx, int);
1445 struct inode * (*open_context) (struct inode *dir,
1446 struct nfs_open_context *ctx,
1448 struct iattr *iattr,
1450 int (*have_delegation)(struct inode *, fmode_t);
1451 int (*return_delegation)(struct inode *);
1452 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1454 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1456 void (*free_client) (struct nfs_client *);
1457 struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1458 struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1459 struct nfs_fattr *, rpc_authflavor_t);
1463 * NFS_CALL(getattr, inode, (fattr));
1465 * NFS_PROTO(inode)->getattr(fattr);
1467 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1470 * Function vectors etc. for the NFS client
1472 extern const struct nfs_rpc_ops nfs_v2_clientops;
1473 extern const struct nfs_rpc_ops nfs_v3_clientops;
1474 extern const struct nfs_rpc_ops nfs_v4_clientops;
1475 extern const struct rpc_version nfs_version2;
1476 extern const struct rpc_version nfs_version3;
1477 extern const struct rpc_version nfs_version4;
1479 extern const struct rpc_version nfsacl_version3;
1480 extern const struct rpc_program nfsacl_program;