1 #ifndef _LINUX_NFS_XDR_H
2 #define _LINUX_NFS_XDR_H
4 #include <linux/nfsacl.h>
7 * To change the maximum rsize and wsize supported by the NFS client, adjust
8 * NFS_MAX_FILE_IO_SIZE. 64KB is a typical maximum, but some servers can
9 * support a megabyte or more. The default is left at 4096 bytes, which is
10 * reasonable for NFS over UDP.
12 #define NFS_MAX_FILE_IO_SIZE (1048576U)
13 #define NFS_DEF_FILE_IO_SIZE (4096U)
14 #define NFS_MIN_FILE_IO_SIZE (1024U)
22 * Helper for checking equality between 2 fsids.
24 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
26 return a->major == b->major && a->minor == b->minor;
30 unsigned short valid; /* which fields are valid */
31 __u64 pre_size; /* pre_op_attr.size */
32 struct timespec pre_mtime; /* pre_op_attr.mtime */
33 struct timespec pre_ctime; /* pre_op_attr.ctime */
34 enum nfs_ftype type; /* always use NFSv2 types */
52 struct timespec atime;
53 struct timespec mtime;
54 struct timespec ctime;
55 __u32 bitmap[2]; /* NFSv4 returned attribute bitmap */
56 __u64 change_attr; /* NFSv4 change attribute */
57 __u64 pre_change_attr;/* pre-op NFSv4 change attribute */
58 unsigned long time_start;
61 #define NFS_ATTR_WCC 0x0001 /* pre-op WCC data */
62 #define NFS_ATTR_FATTR 0x0002 /* post-op attributes */
63 #define NFS_ATTR_FATTR_V3 0x0004 /* NFSv3 attributes */
64 #define NFS_ATTR_FATTR_V4 0x0008 /* NFSv4 change attribute */
65 #define NFS_ATTR_WCC_V4 0x0010 /* pre-op change attribute */
66 #define NFS_ATTR_FATTR_V4_REFERRAL 0x0020 /* NFSv4 referral */
69 * Info on the file system
72 struct nfs_fattr *fattr; /* Post-op attributes */
73 __u32 rtmax; /* max. read transfer size */
74 __u32 rtpref; /* pref. read transfer size */
75 __u32 rtmult; /* reads should be multiple of this */
76 __u32 wtmax; /* max. write transfer size */
77 __u32 wtpref; /* pref. write transfer size */
78 __u32 wtmult; /* writes should be multiple of this */
79 __u32 dtpref; /* pref. readdir transfer size */
81 __u32 lease_time; /* in seconds */
85 struct nfs_fattr *fattr; /* Post-op attributes */
86 __u64 tbytes; /* total size in bytes */
87 __u64 fbytes; /* # of free bytes */
88 __u64 abytes; /* # of bytes available to user */
89 __u64 tfiles; /* # of files */
90 __u64 ffiles; /* # of free files */
91 __u64 afiles; /* # of files available to user */
95 __u32 tsize; /* Server transfer size */
96 __u32 bsize; /* Filesystem block size */
97 __u32 blocks; /* No. of "bsize" blocks on filesystem */
98 __u32 bfree; /* No. of free "bsize" blocks */
99 __u32 bavail; /* No. of available "bsize" blocks */
102 struct nfs_pathconf {
103 struct nfs_fattr *fattr; /* Post-op attributes */
104 __u32 max_link; /* max # of hard links */
105 __u32 max_namelen; /* max name length */
108 struct nfs4_change_info {
116 * Arguments to the open call.
118 struct nfs_openargs {
119 const struct nfs_fh * fh;
120 struct nfs_seqid * seqid;
125 struct iattr * attrs; /* UNCHECKED, GUARDED */
126 nfs4_verifier verifier; /* EXCLUSIVE */
127 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
128 int delegation_type; /* CLAIM_PREVIOUS */
130 const struct qstr * name;
131 const struct nfs_server *server; /* Needed for ID mapping */
137 nfs4_stateid stateid;
139 struct nfs4_change_info cinfo;
141 struct nfs_fattr * f_attr;
142 struct nfs_fattr * dir_attr;
143 const struct nfs_server *server;
145 nfs4_stateid delegation;
148 __u32 attrset[NFS4_BITMAP_SIZE];
152 * Arguments to the open_confirm call.
154 struct nfs_open_confirmargs {
155 const struct nfs_fh * fh;
156 nfs4_stateid * stateid;
157 struct nfs_seqid * seqid;
160 struct nfs_open_confirmres {
161 nfs4_stateid stateid;
165 * Arguments to the close call.
167 struct nfs_closeargs {
169 nfs4_stateid * stateid;
170 struct nfs_seqid * seqid;
175 struct nfs_closeres {
176 nfs4_stateid stateid;
177 struct nfs_fattr * fattr;
178 const struct nfs_server *server;
181 * * Arguments to the lock,lockt, and locku call.
188 struct nfs_lock_args {
190 struct file_lock * fl;
191 struct nfs_seqid * lock_seqid;
192 nfs4_stateid * lock_stateid;
193 struct nfs_seqid * open_seqid;
194 nfs4_stateid * open_stateid;
195 struct nfs_lowner lock_owner;
196 unsigned char block : 1;
197 unsigned char reclaim : 1;
198 unsigned char new_lock_owner : 1;
201 struct nfs_lock_res {
202 nfs4_stateid stateid;
205 struct nfs_locku_args {
207 struct file_lock * fl;
208 struct nfs_seqid * seqid;
209 nfs4_stateid * stateid;
212 struct nfs_locku_res {
213 nfs4_stateid stateid;
216 struct nfs_lockt_args {
218 struct file_lock * fl;
219 struct nfs_lowner lock_owner;
222 struct nfs_lockt_res {
223 struct file_lock * denied; /* LOCK, LOCKT failed */
226 struct nfs4_delegreturnargs {
227 const struct nfs_fh *fhandle;
228 const nfs4_stateid *stateid;
232 struct nfs4_delegreturnres {
233 struct nfs_fattr * fattr;
234 const struct nfs_server *server;
238 * Arguments to the read call.
240 struct nfs_readargs {
242 struct nfs_open_context *context;
246 struct page ** pages;
250 struct nfs_fattr * fattr;
256 * Arguments to the write call.
258 struct nfs_writeargs {
260 struct nfs_open_context *context;
263 enum nfs3_stable_how stable;
265 struct page ** pages;
269 struct nfs_writeverf {
270 enum nfs3_stable_how committed;
274 struct nfs_writeres {
275 struct nfs_fattr * fattr;
276 struct nfs_writeverf * verf;
278 const struct nfs_server *server;
282 * Common arguments to the unlink call
284 struct nfs_removeargs {
285 const struct nfs_fh *fh;
290 struct nfs_removeres {
291 const struct nfs_server *server;
292 struct nfs4_change_info cinfo;
293 struct nfs_fattr dir_attr;
297 * Argument struct for decode_entry function
307 struct nfs_fattr * fattr;
311 * The following types are for NFSv2 only.
313 struct nfs_sattrargs {
315 struct iattr * sattr;
318 struct nfs_diropargs {
324 struct nfs_createargs {
328 struct iattr * sattr;
331 struct nfs_renameargs {
332 struct nfs_fh * fromfh;
333 const char * fromname;
334 unsigned int fromlen;
335 struct nfs_fh * tofh;
340 struct nfs_setattrargs {
342 nfs4_stateid stateid;
344 const struct nfs_server * server; /* Needed for name mapping */
348 struct nfs_setaclargs {
351 unsigned int acl_pgbase;
352 struct page ** acl_pages;
355 struct nfs_getaclargs {
358 unsigned int acl_pgbase;
359 struct page ** acl_pages;
362 struct nfs_setattrres {
363 struct nfs_fattr * fattr;
364 const struct nfs_server * server;
367 struct nfs_linkargs {
368 struct nfs_fh * fromfh;
369 struct nfs_fh * tofh;
374 struct nfs_symlinkargs {
375 struct nfs_fh * fromfh;
376 const char * fromname;
377 unsigned int fromlen;
378 struct page ** pages;
379 unsigned int pathlen;
380 struct iattr * sattr;
383 struct nfs_readdirargs {
387 struct page ** pages;
390 struct nfs3_getaclargs {
393 struct page ** pages;
396 struct nfs3_setaclargs {
397 struct inode * inode;
399 struct posix_acl * acl_access;
400 struct posix_acl * acl_default;
401 struct page ** pages;
406 struct nfs_fattr * fattr;
409 struct nfs_readlinkargs {
413 struct page ** pages;
416 struct nfs3_sattrargs {
418 struct iattr * sattr;
420 struct timespec guardtime;
423 struct nfs3_diropargs {
429 struct nfs3_accessargs {
434 struct nfs3_createargs {
438 struct iattr * sattr;
439 enum nfs3_createmode createmode;
443 struct nfs3_mkdirargs {
447 struct iattr * sattr;
450 struct nfs3_symlinkargs {
451 struct nfs_fh * fromfh;
452 const char * fromname;
453 unsigned int fromlen;
454 struct page ** pages;
455 unsigned int pathlen;
456 struct iattr * sattr;
459 struct nfs3_mknodargs {
463 enum nfs3_ftype type;
464 struct iattr * sattr;
468 struct nfs3_renameargs {
469 struct nfs_fh * fromfh;
470 const char * fromname;
471 unsigned int fromlen;
472 struct nfs_fh * tofh;
477 struct nfs3_linkargs {
478 struct nfs_fh * fromfh;
479 struct nfs_fh * tofh;
484 struct nfs3_readdirargs {
490 struct page ** pages;
493 struct nfs3_diropres {
494 struct nfs_fattr * dir_attr;
496 struct nfs_fattr * fattr;
499 struct nfs3_accessres {
500 struct nfs_fattr * fattr;
504 struct nfs3_readlinkargs {
508 struct page ** pages;
511 struct nfs3_renameres {
512 struct nfs_fattr * fromattr;
513 struct nfs_fattr * toattr;
516 struct nfs3_linkres {
517 struct nfs_fattr * dir_attr;
518 struct nfs_fattr * fattr;
521 struct nfs3_readdirres {
522 struct nfs_fattr * dir_attr;
527 struct nfs3_getaclres {
528 struct nfs_fattr * fattr;
530 unsigned int acl_access_count;
531 unsigned int acl_default_count;
532 struct posix_acl * acl_access;
533 struct posix_acl * acl_default;
538 typedef u64 clientid4;
540 struct nfs4_accessargs {
541 const struct nfs_fh * fh;
546 struct nfs4_accessres {
547 const struct nfs_server * server;
548 struct nfs_fattr * fattr;
553 struct nfs4_create_arg {
557 struct page ** pages;
559 } symlink; /* NF4LNK */
563 } device; /* NF4BLK, NF4CHR */
565 const struct qstr * name;
566 const struct nfs_server * server;
567 const struct iattr * attrs;
568 const struct nfs_fh * dir_fh;
572 struct nfs4_create_res {
573 const struct nfs_server * server;
575 struct nfs_fattr * fattr;
576 struct nfs4_change_info dir_cinfo;
577 struct nfs_fattr * dir_fattr;
580 struct nfs4_fsinfo_arg {
581 const struct nfs_fh * fh;
585 struct nfs4_getattr_arg {
586 const struct nfs_fh * fh;
590 struct nfs4_getattr_res {
591 const struct nfs_server * server;
592 struct nfs_fattr * fattr;
595 struct nfs4_link_arg {
596 const struct nfs_fh * fh;
597 const struct nfs_fh * dir_fh;
598 const struct qstr * name;
602 struct nfs4_link_res {
603 const struct nfs_server * server;
604 struct nfs_fattr * fattr;
605 struct nfs4_change_info cinfo;
606 struct nfs_fattr * dir_attr;
610 struct nfs4_lookup_arg {
611 const struct nfs_fh * dir_fh;
612 const struct qstr * name;
616 struct nfs4_lookup_res {
617 const struct nfs_server * server;
618 struct nfs_fattr * fattr;
622 struct nfs4_lookup_root_arg {
626 struct nfs4_pathconf_arg {
627 const struct nfs_fh * fh;
631 struct nfs4_readdir_arg {
632 const struct nfs_fh * fh;
634 nfs4_verifier verifier;
636 struct page ** pages; /* zero-copy data */
637 unsigned int pgbase; /* zero-copy data */
641 struct nfs4_readdir_res {
642 nfs4_verifier verifier;
646 struct nfs4_readlink {
647 const struct nfs_fh * fh;
649 unsigned int pglen; /* zero-copy data */
650 struct page ** pages; /* zero-copy data */
653 struct nfs4_rename_arg {
654 const struct nfs_fh * old_dir;
655 const struct nfs_fh * new_dir;
656 const struct qstr * old_name;
657 const struct qstr * new_name;
661 struct nfs4_rename_res {
662 const struct nfs_server * server;
663 struct nfs4_change_info old_cinfo;
664 struct nfs_fattr * old_fattr;
665 struct nfs4_change_info new_cinfo;
666 struct nfs_fattr * new_fattr;
669 struct nfs4_setclientid {
670 const nfs4_verifier * sc_verifier; /* request */
671 unsigned int sc_name_len;
672 char sc_name[48]; /* request */
673 u32 sc_prog; /* request */
674 unsigned int sc_netid_len;
675 char sc_netid[4]; /* request */
676 unsigned int sc_uaddr_len;
677 char sc_uaddr[24]; /* request */
678 u32 sc_cb_ident; /* request */
681 struct nfs4_statfs_arg {
682 const struct nfs_fh * fh;
686 struct nfs4_server_caps_res {
698 #define NFS4_PATHNAME_MAXCOMPONENTS 512
699 struct nfs4_pathname {
700 unsigned int ncomponents;
701 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
704 #define NFS4_FS_LOCATION_MAXSERVERS 10
705 struct nfs4_fs_location {
706 unsigned int nservers;
707 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
708 struct nfs4_pathname rootpath;
711 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
712 struct nfs4_fs_locations {
713 struct nfs_fattr fattr;
714 const struct nfs_server *server;
715 struct nfs4_pathname fs_path;
717 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
720 struct nfs4_fs_locations_arg {
721 const struct nfs_fh *dir_fh;
722 const struct qstr *name;
727 #endif /* CONFIG_NFS_V4 */
731 #define NFS_PAGEVEC_SIZE (8U)
733 struct nfs_read_data {
735 struct rpc_task task;
737 struct rpc_cred *cred;
738 struct nfs_fattr fattr; /* fattr storage */
739 struct list_head pages; /* Coalesced read requests */
740 struct nfs_page *req; /* multi ops per nfs_page */
741 struct page **pagevec;
742 unsigned int npages; /* Max length of pagevec */
743 struct nfs_readargs args;
744 struct nfs_readres res;
746 unsigned long timestamp; /* For lease renewal */
748 struct page *page_array[NFS_PAGEVEC_SIZE];
751 struct nfs_write_data {
753 struct rpc_task task;
755 struct rpc_cred *cred;
756 struct nfs_fattr fattr;
757 struct nfs_writeverf verf;
758 struct list_head pages; /* Coalesced requests we wish to flush */
759 struct nfs_page *req; /* multi ops per nfs_page */
760 struct page **pagevec;
761 unsigned int npages; /* Max length of pagevec */
762 struct nfs_writeargs args; /* argument struct */
763 struct nfs_writeres res; /* result struct */
765 unsigned long timestamp; /* For lease renewal */
767 struct page *page_array[NFS_PAGEVEC_SIZE];
770 struct nfs_access_entry;
773 * RPC procedure vector for NFSv2/NFSv3 demuxing
776 int version; /* Protocol version */
777 struct dentry_operations *dentry_ops;
778 const struct inode_operations *dir_inode_ops;
779 const struct inode_operations *file_inode_ops;
781 int (*getroot) (struct nfs_server *, struct nfs_fh *,
782 struct nfs_fsinfo *);
783 int (*lookupfh)(struct nfs_server *, struct nfs_fh *,
784 struct qstr *, struct nfs_fh *,
786 int (*getattr) (struct nfs_server *, struct nfs_fh *,
788 int (*setattr) (struct dentry *, struct nfs_fattr *,
790 int (*lookup) (struct inode *, struct qstr *,
791 struct nfs_fh *, struct nfs_fattr *);
792 int (*access) (struct inode *, struct nfs_access_entry *);
793 int (*readlink)(struct inode *, struct page *, unsigned int,
795 int (*create) (struct inode *, struct dentry *,
796 struct iattr *, int, struct nameidata *);
797 int (*remove) (struct inode *, struct qstr *);
798 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
799 int (*unlink_done) (struct rpc_task *, struct inode *);
800 int (*rename) (struct inode *, struct qstr *,
801 struct inode *, struct qstr *);
802 int (*link) (struct inode *, struct inode *, struct qstr *);
803 int (*symlink) (struct inode *, struct dentry *, struct page *,
804 unsigned int, struct iattr *);
805 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
806 int (*rmdir) (struct inode *, struct qstr *);
807 int (*readdir) (struct dentry *, struct rpc_cred *,
808 u64, struct page *, unsigned int, int);
809 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
811 int (*statfs) (struct nfs_server *, struct nfs_fh *,
812 struct nfs_fsstat *);
813 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
814 struct nfs_fsinfo *);
815 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
816 struct nfs_pathconf *);
817 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
818 __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
819 void (*read_setup) (struct nfs_read_data *);
820 int (*read_done) (struct rpc_task *, struct nfs_read_data *);
821 void (*write_setup) (struct nfs_write_data *, int how);
822 int (*write_done) (struct rpc_task *, struct nfs_write_data *);
823 void (*commit_setup) (struct nfs_write_data *, int how);
824 int (*commit_done) (struct rpc_task *, struct nfs_write_data *);
825 int (*file_open) (struct inode *, struct file *);
826 int (*file_release) (struct inode *, struct file *);
827 int (*lock)(struct file *, int, struct file_lock *);
828 void (*clear_acl_cache)(struct inode *);
832 * NFS_CALL(getattr, inode, (fattr));
834 * NFS_PROTO(inode)->getattr(fattr);
836 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
839 * Function vectors etc. for the NFS client
841 extern const struct nfs_rpc_ops nfs_v2_clientops;
842 extern const struct nfs_rpc_ops nfs_v3_clientops;
843 extern const struct nfs_rpc_ops nfs_v4_clientops;
844 extern struct rpc_version nfs_version2;
845 extern struct rpc_version nfs_version3;
846 extern struct rpc_version nfs_version4;
848 extern struct rpc_version nfsacl_version3;
849 extern struct rpc_program nfsacl_program;