2 * linux/fs/nfs/nfs3xdr.c
4 * XDR functions to encode/decode NFSv3 RPC arguments and results.
6 * Copyright (C) 1996, 1997 Olaf Kirch
9 #include <linux/param.h>
10 #include <linux/time.h>
12 #include <linux/errno.h>
13 #include <linux/string.h>
15 #include <linux/pagemap.h>
16 #include <linux/proc_fs.h>
17 #include <linux/kdev_t.h>
18 #include <linux/sunrpc/clnt.h>
19 #include <linux/nfs.h>
20 #include <linux/nfs3.h>
21 #include <linux/nfs_fs.h>
22 #include <linux/nfsacl.h>
25 #define NFSDBG_FACILITY NFSDBG_XDR
27 /* Mapping from NFS error code to "errno" error code. */
28 #define errno_NFSERR_IO EIO
31 * Declare the space requirements for NFS arguments and replies as
32 * number of 32bit-words
34 #define NFS3_fhandle_sz (1+16)
35 #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */
36 #define NFS3_sattr_sz (15)
37 #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2))
38 #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2))
39 #define NFS3_fattr_sz (21)
40 #define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2)
41 #define NFS3_wcc_attr_sz (6)
42 #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz)
43 #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz)
44 #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz)
45 #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz)
47 #define NFS3_getattrargs_sz (NFS3_fh_sz)
48 #define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3)
49 #define NFS3_lookupargs_sz (NFS3_fh_sz+NFS3_filename_sz)
50 #define NFS3_accessargs_sz (NFS3_fh_sz+1)
51 #define NFS3_readlinkargs_sz (NFS3_fh_sz)
52 #define NFS3_readargs_sz (NFS3_fh_sz+3)
53 #define NFS3_writeargs_sz (NFS3_fh_sz+5)
54 #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz)
55 #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz)
56 #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz)
57 #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz)
58 #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz)
59 #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz)
60 #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz)
61 #define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3)
62 #define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4)
63 #define NFS3_commitargs_sz (NFS3_fh_sz+3)
65 #define NFS3_getattrres_sz (1+NFS3_fattr_sz)
66 #define NFS3_setattrres_sz (1+NFS3_wcc_data_sz)
67 #define NFS3_removeres_sz (NFS3_setattrres_sz)
68 #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz))
69 #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1)
70 #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1)
71 #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3)
72 #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4)
73 #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz)
74 #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz))
75 #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz)
76 #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2)
77 #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13)
78 #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12)
79 #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6)
80 #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2)
82 #define ACL3_getaclargs_sz (NFS3_fh_sz+1)
83 #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \
84 XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE))
85 #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \
86 XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE))
87 #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz)
89 static int nfs3_stat_to_errno(enum nfs_stat);
92 * Map file type to S_IFMT bits
94 static const umode_t nfs_type2fmt[] = {
101 [NF3SOCK] = S_IFSOCK,
106 * While encoding arguments, set up the reply buffer in advance to
107 * receive reply data directly into the page cache.
109 static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
110 unsigned int base, unsigned int len,
111 unsigned int bufsize)
113 struct rpc_auth *auth = req->rq_cred->cr_auth;
116 replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize;
117 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
121 * Handle decode buffer overflows out-of-line.
123 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
125 dprintk("NFS: %s prematurely hit the end of our receive buffer. "
126 "Remaining buffer length is %tu words.\n",
127 func, xdr->end - xdr->p);
132 * Encode/decode NFSv3 basic data types
134 * Basic NFSv3 data types are defined in section 2.5 of RFC 1813:
135 * "NFS Version 3 Protocol Specification".
137 * Not all basic data types have their own encoding and decoding
138 * functions. For run-time efficiency, some data types are encoded
142 static void encode_uint32(struct xdr_stream *xdr, u32 value)
144 __be32 *p = xdr_reserve_space(xdr, 4);
145 *p = cpu_to_be32(value);
148 static int decode_uint32(struct xdr_stream *xdr, u32 *value)
152 p = xdr_inline_decode(xdr, 4);
153 if (unlikely(p == NULL))
155 *value = be32_to_cpup(p);
158 print_overflow_msg(__func__, xdr);
162 static int decode_uint64(struct xdr_stream *xdr, u64 *value)
166 p = xdr_inline_decode(xdr, 8);
167 if (unlikely(p == NULL))
169 xdr_decode_hyper(p, value);
172 print_overflow_msg(__func__, xdr);
179 * typedef uint64 fileid3;
181 static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid)
183 return xdr_decode_hyper(p, fileid);
186 static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid)
188 return decode_uint64(xdr, fileid);
194 * typedef string filename3<>;
196 static void encode_filename3(struct xdr_stream *xdr,
197 const char *name, u32 length)
201 WARN_ON_ONCE(length > NFS3_MAXNAMLEN);
202 p = xdr_reserve_space(xdr, 4 + length);
203 xdr_encode_opaque(p, name, length);
206 static int decode_inline_filename3(struct xdr_stream *xdr,
207 const char **name, u32 *length)
212 p = xdr_inline_decode(xdr, 4);
213 if (unlikely(p == NULL))
215 count = be32_to_cpup(p);
216 if (count > NFS3_MAXNAMLEN)
217 goto out_nametoolong;
218 p = xdr_inline_decode(xdr, count);
219 if (unlikely(p == NULL))
221 *name = (const char *)p;
226 dprintk("NFS: returned filename too long: %u\n", count);
227 return -ENAMETOOLONG;
229 print_overflow_msg(__func__, xdr);
236 * typedef string nfspath3<>;
238 static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages,
241 encode_uint32(xdr, length);
242 xdr_write_pages(xdr, pages, 0, length);
245 static int decode_nfspath3(struct xdr_stream *xdr)
250 p = xdr_inline_decode(xdr, 4);
251 if (unlikely(p == NULL))
253 count = be32_to_cpup(p);
254 if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN))
255 goto out_nametoolong;
256 recvd = xdr_read_pages(xdr, count);
257 if (unlikely(count > recvd))
259 xdr_terminate_string(xdr->buf, count);
263 dprintk("NFS: returned pathname too long: %u\n", count);
264 return -ENAMETOOLONG;
266 dprintk("NFS: server cheating in pathname result: "
267 "count %u > recvd %u\n", count, recvd);
270 print_overflow_msg(__func__, xdr);
277 * typedef uint64 cookie3
279 static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie)
281 return xdr_encode_hyper(p, cookie);
284 static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie)
286 return decode_uint64(xdr, cookie);
292 * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE];
294 static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier)
296 memcpy(p, verifier, NFS3_COOKIEVERFSIZE);
297 return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE);
300 static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier)
304 p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE);
305 if (unlikely(p == NULL))
307 memcpy(verifier, p, NFS3_COOKIEVERFSIZE);
310 print_overflow_msg(__func__, xdr);
317 * typedef opaque createverf3[NFS3_CREATEVERFSIZE];
319 static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier)
323 p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE);
324 memcpy(p, verifier, NFS3_CREATEVERFSIZE);
327 static int decode_writeverf3(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
331 p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE);
332 if (unlikely(p == NULL))
334 memcpy(verifier->data, p, NFS3_WRITEVERFSIZE);
337 print_overflow_msg(__func__, xdr);
344 * typedef uint64 size3;
346 static __be32 *xdr_decode_size3(__be32 *p, u64 *size)
348 return xdr_decode_hyper(p, size);
359 #define NFS3_OK NFS_OK
361 static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status)
365 p = xdr_inline_decode(xdr, 4);
366 if (unlikely(p == NULL))
368 *status = be32_to_cpup(p);
371 print_overflow_msg(__func__, xdr);
388 static void encode_ftype3(struct xdr_stream *xdr, const u32 type)
390 encode_uint32(xdr, type);
393 static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode)
397 type = be32_to_cpup(p++);
400 *mode = nfs_type2fmt[type];
412 static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev)
416 p = xdr_reserve_space(xdr, 8);
417 *p++ = cpu_to_be32(MAJOR(rdev));
418 *p = cpu_to_be32(MINOR(rdev));
421 static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev)
423 unsigned int major, minor;
425 major = be32_to_cpup(p++);
426 minor = be32_to_cpup(p++);
427 *rdev = MKDEV(major, minor);
428 if (MAJOR(*rdev) != major || MINOR(*rdev) != minor)
437 * opaque data<NFS3_FHSIZE>;
440 static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh)
444 WARN_ON_ONCE(fh->size > NFS3_FHSIZE);
445 p = xdr_reserve_space(xdr, 4 + fh->size);
446 xdr_encode_opaque(p, fh->data, fh->size);
449 static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
454 p = xdr_inline_decode(xdr, 4);
455 if (unlikely(p == NULL))
457 length = be32_to_cpup(p++);
458 if (unlikely(length > NFS3_FHSIZE))
460 p = xdr_inline_decode(xdr, length);
461 if (unlikely(p == NULL))
464 memcpy(fh->data, p, length);
467 dprintk("NFS: file handle size (%u) too big\n", length);
470 print_overflow_msg(__func__, xdr);
474 static void zero_nfs_fh3(struct nfs_fh *fh)
476 memset(fh, 0, sizeof(*fh));
487 static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep)
489 *p++ = cpu_to_be32(timep->tv_sec);
490 *p++ = cpu_to_be32(timep->tv_nsec);
494 static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep)
496 timep->tv_sec = be32_to_cpup(p++);
497 timep->tv_nsec = be32_to_cpup(p++);
506 * SET_TO_SERVER_TIME = 1,
507 * SET_TO_CLIENT_TIME = 2
510 * union set_mode3 switch (bool set_it) {
517 * union set_uid3 switch (bool set_it) {
524 * union set_gid3 switch (bool set_it) {
531 * union set_size3 switch (bool set_it) {
538 * union set_atime switch (time_how set_it) {
539 * case SET_TO_CLIENT_TIME:
545 * union set_mtime switch (time_how set_it) {
546 * case SET_TO_CLIENT_TIME:
561 static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
567 * In order to make only a single xdr_reserve_space() call,
568 * pre-compute the total number of bytes to be reserved.
569 * Six boolean values, one for each set_foo field, are always
570 * present in the encoded result, so start there.
573 if (attr->ia_valid & ATTR_MODE)
575 if (attr->ia_valid & ATTR_UID)
577 if (attr->ia_valid & ATTR_GID)
579 if (attr->ia_valid & ATTR_SIZE)
581 if (attr->ia_valid & ATTR_ATIME_SET)
583 if (attr->ia_valid & ATTR_MTIME_SET)
585 p = xdr_reserve_space(xdr, nbytes);
587 if (attr->ia_valid & ATTR_MODE) {
589 *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO);
593 if (attr->ia_valid & ATTR_UID) {
595 *p++ = cpu_to_be32(attr->ia_uid);
599 if (attr->ia_valid & ATTR_GID) {
601 *p++ = cpu_to_be32(attr->ia_gid);
605 if (attr->ia_valid & ATTR_SIZE) {
607 p = xdr_encode_hyper(p, (u64)attr->ia_size);
611 if (attr->ia_valid & ATTR_ATIME_SET) {
613 p = xdr_encode_nfstime3(p, &attr->ia_atime);
614 } else if (attr->ia_valid & ATTR_ATIME) {
619 if (attr->ia_valid & ATTR_MTIME_SET) {
621 xdr_encode_nfstime3(p, &attr->ia_mtime);
622 } else if (attr->ia_valid & ATTR_MTIME) {
647 static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
652 p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2);
653 if (unlikely(p == NULL))
656 p = xdr_decode_ftype3(p, &fmode);
658 fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode;
659 fattr->nlink = be32_to_cpup(p++);
660 fattr->uid = be32_to_cpup(p++);
661 fattr->gid = be32_to_cpup(p++);
663 p = xdr_decode_size3(p, &fattr->size);
664 p = xdr_decode_size3(p, &fattr->du.nfs3.used);
665 p = xdr_decode_specdata3(p, &fattr->rdev);
667 p = xdr_decode_hyper(p, &fattr->fsid.major);
668 fattr->fsid.minor = 0;
670 p = xdr_decode_fileid3(p, &fattr->fileid);
671 p = xdr_decode_nfstime3(p, &fattr->atime);
672 p = xdr_decode_nfstime3(p, &fattr->mtime);
673 xdr_decode_nfstime3(p, &fattr->ctime);
674 fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime);
676 fattr->valid |= NFS_ATTR_FATTR_V3;
679 print_overflow_msg(__func__, xdr);
686 * union post_op_attr switch (bool attributes_follow) {
693 static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
697 p = xdr_inline_decode(xdr, 4);
698 if (unlikely(p == NULL))
701 return decode_fattr3(xdr, fattr);
704 print_overflow_msg(__func__, xdr);
716 static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
720 p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2);
721 if (unlikely(p == NULL))
724 fattr->valid |= NFS_ATTR_FATTR_PRESIZE
725 | NFS_ATTR_FATTR_PRECHANGE
726 | NFS_ATTR_FATTR_PREMTIME
727 | NFS_ATTR_FATTR_PRECTIME;
729 p = xdr_decode_size3(p, &fattr->pre_size);
730 p = xdr_decode_nfstime3(p, &fattr->pre_mtime);
731 xdr_decode_nfstime3(p, &fattr->pre_ctime);
732 fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime);
736 print_overflow_msg(__func__, xdr);
742 * union pre_op_attr switch (bool attributes_follow) {
744 * wcc_attr attributes;
752 * pre_op_attr before;
753 * post_op_attr after;
756 static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
760 p = xdr_inline_decode(xdr, 4);
761 if (unlikely(p == NULL))
764 return decode_wcc_attr(xdr, fattr);
767 print_overflow_msg(__func__, xdr);
771 static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr)
775 error = decode_pre_op_attr(xdr, fattr);
778 error = decode_post_op_attr(xdr, fattr);
786 * union post_op_fh3 switch (bool handle_follows) {
793 static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
795 __be32 *p = xdr_inline_decode(xdr, 4);
796 if (unlikely(p == NULL))
799 return decode_nfs_fh3(xdr, fh);
803 print_overflow_msg(__func__, xdr);
810 * struct diropargs3 {
815 static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh,
816 const char *name, u32 length)
818 encode_nfs_fh3(xdr, fh);
819 encode_filename3(xdr, name, length);
824 * NFSv3 XDR encode functions
826 * NFSv3 argument types are defined in section 3.3 of RFC 1813:
827 * "NFS Version 3 Protocol Specification".
833 * struct GETATTR3args {
837 static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req,
838 struct xdr_stream *xdr,
839 const struct nfs_fh *fh)
841 encode_nfs_fh3(xdr, fh);
847 * union sattrguard3 switch (bool check) {
849 * nfstime3 obj_ctime;
854 * struct SETATTR3args {
856 * sattr3 new_attributes;
860 static void encode_sattrguard3(struct xdr_stream *xdr,
861 const struct nfs3_sattrargs *args)
866 p = xdr_reserve_space(xdr, 4 + 8);
868 xdr_encode_nfstime3(p, &args->guardtime);
870 p = xdr_reserve_space(xdr, 4);
875 static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req,
876 struct xdr_stream *xdr,
877 const struct nfs3_sattrargs *args)
879 encode_nfs_fh3(xdr, args->fh);
880 encode_sattr3(xdr, args->sattr);
881 encode_sattrguard3(xdr, args);
887 * struct LOOKUP3args {
891 static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req,
892 struct xdr_stream *xdr,
893 const struct nfs3_diropargs *args)
895 encode_diropargs3(xdr, args->fh, args->name, args->len);
901 * struct ACCESS3args {
906 static void encode_access3args(struct xdr_stream *xdr,
907 const struct nfs3_accessargs *args)
909 encode_nfs_fh3(xdr, args->fh);
910 encode_uint32(xdr, args->access);
913 static void nfs3_xdr_enc_access3args(struct rpc_rqst *req,
914 struct xdr_stream *xdr,
915 const struct nfs3_accessargs *args)
917 encode_access3args(xdr, args);
921 * 3.3.5 READLINK3args
923 * struct READLINK3args {
927 static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req,
928 struct xdr_stream *xdr,
929 const struct nfs3_readlinkargs *args)
931 encode_nfs_fh3(xdr, args->fh);
932 prepare_reply_buffer(req, args->pages, args->pgbase,
933 args->pglen, NFS3_readlinkres_sz);
945 static void encode_read3args(struct xdr_stream *xdr,
946 const struct nfs_readargs *args)
950 encode_nfs_fh3(xdr, args->fh);
952 p = xdr_reserve_space(xdr, 8 + 4);
953 p = xdr_encode_hyper(p, args->offset);
954 *p = cpu_to_be32(args->count);
957 static void nfs3_xdr_enc_read3args(struct rpc_rqst *req,
958 struct xdr_stream *xdr,
959 const struct nfs_readargs *args)
961 encode_read3args(xdr, args);
962 prepare_reply_buffer(req, args->pages, args->pgbase,
963 args->count, NFS3_readres_sz);
964 req->rq_rcv_buf.flags |= XDRBUF_READ;
976 * struct WRITE3args {
984 static void encode_write3args(struct xdr_stream *xdr,
985 const struct nfs_writeargs *args)
989 encode_nfs_fh3(xdr, args->fh);
991 p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4);
992 p = xdr_encode_hyper(p, args->offset);
993 *p++ = cpu_to_be32(args->count);
994 *p++ = cpu_to_be32(args->stable);
995 *p = cpu_to_be32(args->count);
996 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
999 static void nfs3_xdr_enc_write3args(struct rpc_rqst *req,
1000 struct xdr_stream *xdr,
1001 const struct nfs_writeargs *args)
1003 encode_write3args(xdr, args);
1004 xdr->buf->flags |= XDRBUF_WRITE;
1010 * enum createmode3 {
1016 * union createhow3 switch (createmode3 mode) {
1019 * sattr3 obj_attributes;
1024 * struct CREATE3args {
1029 static void encode_createhow3(struct xdr_stream *xdr,
1030 const struct nfs3_createargs *args)
1032 encode_uint32(xdr, args->createmode);
1033 switch (args->createmode) {
1034 case NFS3_CREATE_UNCHECKED:
1035 case NFS3_CREATE_GUARDED:
1036 encode_sattr3(xdr, args->sattr);
1038 case NFS3_CREATE_EXCLUSIVE:
1039 encode_createverf3(xdr, args->verifier);
1046 static void nfs3_xdr_enc_create3args(struct rpc_rqst *req,
1047 struct xdr_stream *xdr,
1048 const struct nfs3_createargs *args)
1050 encode_diropargs3(xdr, args->fh, args->name, args->len);
1051 encode_createhow3(xdr, args);
1057 * struct MKDIR3args {
1059 * sattr3 attributes;
1062 static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req,
1063 struct xdr_stream *xdr,
1064 const struct nfs3_mkdirargs *args)
1066 encode_diropargs3(xdr, args->fh, args->name, args->len);
1067 encode_sattr3(xdr, args->sattr);
1071 * 3.3.10 SYMLINK3args
1073 * struct symlinkdata3 {
1074 * sattr3 symlink_attributes;
1075 * nfspath3 symlink_data;
1078 * struct SYMLINK3args {
1080 * symlinkdata3 symlink;
1083 static void encode_symlinkdata3(struct xdr_stream *xdr,
1084 const struct nfs3_symlinkargs *args)
1086 encode_sattr3(xdr, args->sattr);
1087 encode_nfspath3(xdr, args->pages, args->pathlen);
1090 static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req,
1091 struct xdr_stream *xdr,
1092 const struct nfs3_symlinkargs *args)
1094 encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
1095 encode_symlinkdata3(xdr, args);
1101 * struct devicedata3 {
1102 * sattr3 dev_attributes;
1106 * union mknoddata3 switch (ftype3 type) {
1109 * devicedata3 device;
1112 * sattr3 pipe_attributes;
1117 * struct MKNOD3args {
1122 static void encode_devicedata3(struct xdr_stream *xdr,
1123 const struct nfs3_mknodargs *args)
1125 encode_sattr3(xdr, args->sattr);
1126 encode_specdata3(xdr, args->rdev);
1129 static void encode_mknoddata3(struct xdr_stream *xdr,
1130 const struct nfs3_mknodargs *args)
1132 encode_ftype3(xdr, args->type);
1133 switch (args->type) {
1136 encode_devicedata3(xdr, args);
1140 encode_sattr3(xdr, args->sattr);
1150 static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req,
1151 struct xdr_stream *xdr,
1152 const struct nfs3_mknodargs *args)
1154 encode_diropargs3(xdr, args->fh, args->name, args->len);
1155 encode_mknoddata3(xdr, args);
1159 * 3.3.12 REMOVE3args
1161 * struct REMOVE3args {
1162 * diropargs3 object;
1165 static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req,
1166 struct xdr_stream *xdr,
1167 const struct nfs_removeargs *args)
1169 encode_diropargs3(xdr, args->fh, args->name.name, args->name.len);
1173 * 3.3.14 RENAME3args
1175 * struct RENAME3args {
1180 static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req,
1181 struct xdr_stream *xdr,
1182 const struct nfs_renameargs *args)
1184 const struct qstr *old = args->old_name;
1185 const struct qstr *new = args->new_name;
1187 encode_diropargs3(xdr, args->old_dir, old->name, old->len);
1188 encode_diropargs3(xdr, args->new_dir, new->name, new->len);
1194 * struct LINK3args {
1199 static void nfs3_xdr_enc_link3args(struct rpc_rqst *req,
1200 struct xdr_stream *xdr,
1201 const struct nfs3_linkargs *args)
1203 encode_nfs_fh3(xdr, args->fromfh);
1204 encode_diropargs3(xdr, args->tofh, args->toname, args->tolen);
1208 * 3.3.16 READDIR3args
1210 * struct READDIR3args {
1213 * cookieverf3 cookieverf;
1217 static void encode_readdir3args(struct xdr_stream *xdr,
1218 const struct nfs3_readdirargs *args)
1222 encode_nfs_fh3(xdr, args->fh);
1224 p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4);
1225 p = xdr_encode_cookie3(p, args->cookie);
1226 p = xdr_encode_cookieverf3(p, args->verf);
1227 *p = cpu_to_be32(args->count);
1230 static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req,
1231 struct xdr_stream *xdr,
1232 const struct nfs3_readdirargs *args)
1234 encode_readdir3args(xdr, args);
1235 prepare_reply_buffer(req, args->pages, 0,
1236 args->count, NFS3_readdirres_sz);
1240 * 3.3.17 READDIRPLUS3args
1242 * struct READDIRPLUS3args {
1245 * cookieverf3 cookieverf;
1250 static void encode_readdirplus3args(struct xdr_stream *xdr,
1251 const struct nfs3_readdirargs *args)
1255 encode_nfs_fh3(xdr, args->fh);
1257 p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4);
1258 p = xdr_encode_cookie3(p, args->cookie);
1259 p = xdr_encode_cookieverf3(p, args->verf);
1262 * readdirplus: need dircount + buffer size.
1263 * We just make sure we make dircount big enough
1265 *p++ = cpu_to_be32(args->count >> 3);
1267 *p = cpu_to_be32(args->count);
1270 static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req,
1271 struct xdr_stream *xdr,
1272 const struct nfs3_readdirargs *args)
1274 encode_readdirplus3args(xdr, args);
1275 prepare_reply_buffer(req, args->pages, 0,
1276 args->count, NFS3_readdirres_sz);
1280 * 3.3.21 COMMIT3args
1282 * struct COMMIT3args {
1288 static void encode_commit3args(struct xdr_stream *xdr,
1289 const struct nfs_commitargs *args)
1293 encode_nfs_fh3(xdr, args->fh);
1295 p = xdr_reserve_space(xdr, 8 + 4);
1296 p = xdr_encode_hyper(p, args->offset);
1297 *p = cpu_to_be32(args->count);
1300 static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req,
1301 struct xdr_stream *xdr,
1302 const struct nfs_commitargs *args)
1304 encode_commit3args(xdr, args);
1307 #ifdef CONFIG_NFS_V3_ACL
1309 static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req,
1310 struct xdr_stream *xdr,
1311 const struct nfs3_getaclargs *args)
1313 encode_nfs_fh3(xdr, args->fh);
1314 encode_uint32(xdr, args->mask);
1315 if (args->mask & (NFS_ACL | NFS_DFACL))
1316 prepare_reply_buffer(req, args->pages, 0,
1317 NFSACL_MAXPAGES << PAGE_SHIFT,
1321 static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
1322 struct xdr_stream *xdr,
1323 const struct nfs3_setaclargs *args)
1328 encode_nfs_fh3(xdr, NFS_FH(args->inode));
1329 encode_uint32(xdr, args->mask);
1331 base = req->rq_slen;
1332 if (args->npages != 0)
1333 xdr_write_pages(xdr, args->pages, 0, args->len);
1335 xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE);
1337 error = nfsacl_encode(xdr->buf, base, args->inode,
1338 (args->mask & NFS_ACL) ?
1339 args->acl_access : NULL, 1, 0);
1340 /* FIXME: this is just broken */
1342 error = nfsacl_encode(xdr->buf, base + error, args->inode,
1343 (args->mask & NFS_DFACL) ?
1344 args->acl_default : NULL, 1,
1349 #endif /* CONFIG_NFS_V3_ACL */
1352 * NFSv3 XDR decode functions
1354 * NFSv3 result types are defined in section 3.3 of RFC 1813:
1355 * "NFS Version 3 Protocol Specification".
1361 * struct GETATTR3resok {
1362 * fattr3 obj_attributes;
1365 * union GETATTR3res switch (nfsstat3 status) {
1367 * GETATTR3resok resok;
1372 static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req,
1373 struct xdr_stream *xdr,
1374 struct nfs_fattr *result)
1376 enum nfs_stat status;
1379 error = decode_nfsstat3(xdr, &status);
1380 if (unlikely(error))
1382 if (status != NFS3_OK)
1384 error = decode_fattr3(xdr, result);
1388 return nfs3_stat_to_errno(status);
1394 * struct SETATTR3resok {
1398 * struct SETATTR3resfail {
1402 * union SETATTR3res switch (nfsstat3 status) {
1404 * SETATTR3resok resok;
1406 * SETATTR3resfail resfail;
1409 static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req,
1410 struct xdr_stream *xdr,
1411 struct nfs_fattr *result)
1413 enum nfs_stat status;
1416 error = decode_nfsstat3(xdr, &status);
1417 if (unlikely(error))
1419 error = decode_wcc_data(xdr, result);
1420 if (unlikely(error))
1422 if (status != NFS3_OK)
1427 return nfs3_stat_to_errno(status);
1433 * struct LOOKUP3resok {
1435 * post_op_attr obj_attributes;
1436 * post_op_attr dir_attributes;
1439 * struct LOOKUP3resfail {
1440 * post_op_attr dir_attributes;
1443 * union LOOKUP3res switch (nfsstat3 status) {
1445 * LOOKUP3resok resok;
1447 * LOOKUP3resfail resfail;
1450 static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req,
1451 struct xdr_stream *xdr,
1452 struct nfs3_diropres *result)
1454 enum nfs_stat status;
1457 error = decode_nfsstat3(xdr, &status);
1458 if (unlikely(error))
1460 if (status != NFS3_OK)
1462 error = decode_nfs_fh3(xdr, result->fh);
1463 if (unlikely(error))
1465 error = decode_post_op_attr(xdr, result->fattr);
1466 if (unlikely(error))
1468 error = decode_post_op_attr(xdr, result->dir_attr);
1472 error = decode_post_op_attr(xdr, result->dir_attr);
1473 if (unlikely(error))
1475 return nfs3_stat_to_errno(status);
1481 * struct ACCESS3resok {
1482 * post_op_attr obj_attributes;
1486 * struct ACCESS3resfail {
1487 * post_op_attr obj_attributes;
1490 * union ACCESS3res switch (nfsstat3 status) {
1492 * ACCESS3resok resok;
1494 * ACCESS3resfail resfail;
1497 static int nfs3_xdr_dec_access3res(struct rpc_rqst *req,
1498 struct xdr_stream *xdr,
1499 struct nfs3_accessres *result)
1501 enum nfs_stat status;
1504 error = decode_nfsstat3(xdr, &status);
1505 if (unlikely(error))
1507 error = decode_post_op_attr(xdr, result->fattr);
1508 if (unlikely(error))
1510 if (status != NFS3_OK)
1512 error = decode_uint32(xdr, &result->access);
1516 return nfs3_stat_to_errno(status);
1520 * 3.3.5 READLINK3res
1522 * struct READLINK3resok {
1523 * post_op_attr symlink_attributes;
1527 * struct READLINK3resfail {
1528 * post_op_attr symlink_attributes;
1531 * union READLINK3res switch (nfsstat3 status) {
1533 * READLINK3resok resok;
1535 * READLINK3resfail resfail;
1538 static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req,
1539 struct xdr_stream *xdr,
1540 struct nfs_fattr *result)
1542 enum nfs_stat status;
1545 error = decode_nfsstat3(xdr, &status);
1546 if (unlikely(error))
1548 error = decode_post_op_attr(xdr, result);
1549 if (unlikely(error))
1551 if (status != NFS3_OK)
1553 error = decode_nfspath3(xdr);
1557 return nfs3_stat_to_errno(status);
1563 * struct READ3resok {
1564 * post_op_attr file_attributes;
1570 * struct READ3resfail {
1571 * post_op_attr file_attributes;
1574 * union READ3res switch (nfsstat3 status) {
1578 * READ3resfail resfail;
1581 static int decode_read3resok(struct xdr_stream *xdr,
1582 struct nfs_readres *result)
1584 u32 eof, count, ocount, recvd;
1587 p = xdr_inline_decode(xdr, 4 + 4 + 4);
1588 if (unlikely(p == NULL))
1590 count = be32_to_cpup(p++);
1591 eof = be32_to_cpup(p++);
1592 ocount = be32_to_cpup(p++);
1593 if (unlikely(ocount != count))
1595 recvd = xdr_read_pages(xdr, count);
1596 if (unlikely(count > recvd))
1600 result->count = count;
1603 dprintk("NFS: READ count doesn't match length of opaque: "
1604 "count %u != ocount %u\n", count, ocount);
1607 dprintk("NFS: server cheating in read result: "
1608 "count %u > recvd %u\n", count, recvd);
1613 print_overflow_msg(__func__, xdr);
1617 static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1618 struct nfs_readres *result)
1620 enum nfs_stat status;
1623 error = decode_nfsstat3(xdr, &status);
1624 if (unlikely(error))
1626 error = decode_post_op_attr(xdr, result->fattr);
1627 if (unlikely(error))
1629 if (status != NFS3_OK)
1631 error = decode_read3resok(xdr, result);
1635 return nfs3_stat_to_errno(status);
1647 * struct WRITE3resok {
1648 * wcc_data file_wcc;
1650 * stable_how committed;
1654 * struct WRITE3resfail {
1655 * wcc_data file_wcc;
1658 * union WRITE3res switch (nfsstat3 status) {
1660 * WRITE3resok resok;
1662 * WRITE3resfail resfail;
1665 static int decode_write3resok(struct xdr_stream *xdr,
1666 struct nfs_writeres *result)
1670 p = xdr_inline_decode(xdr, 4 + 4);
1671 if (unlikely(p == NULL))
1673 result->count = be32_to_cpup(p++);
1674 result->verf->committed = be32_to_cpup(p++);
1675 if (unlikely(result->verf->committed > NFS_FILE_SYNC))
1677 if (decode_writeverf3(xdr, &result->verf->verifier))
1679 return result->count;
1681 dprintk("NFS: bad stable_how value: %u\n", result->verf->committed);
1684 print_overflow_msg(__func__, xdr);
1689 static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1690 struct nfs_writeres *result)
1692 enum nfs_stat status;
1695 error = decode_nfsstat3(xdr, &status);
1696 if (unlikely(error))
1698 error = decode_wcc_data(xdr, result->fattr);
1699 if (unlikely(error))
1701 if (status != NFS3_OK)
1703 error = decode_write3resok(xdr, result);
1707 return nfs3_stat_to_errno(status);
1713 * struct CREATE3resok {
1715 * post_op_attr obj_attributes;
1719 * struct CREATE3resfail {
1723 * union CREATE3res switch (nfsstat3 status) {
1725 * CREATE3resok resok;
1727 * CREATE3resfail resfail;
1730 static int decode_create3resok(struct xdr_stream *xdr,
1731 struct nfs3_diropres *result)
1735 error = decode_post_op_fh3(xdr, result->fh);
1736 if (unlikely(error))
1738 error = decode_post_op_attr(xdr, result->fattr);
1739 if (unlikely(error))
1741 /* The server isn't required to return a file handle.
1742 * If it didn't, force the client to perform a LOOKUP
1743 * to determine the correct file handle and attribute
1744 * values for the new object. */
1745 if (result->fh->size == 0)
1746 result->fattr->valid = 0;
1747 error = decode_wcc_data(xdr, result->dir_attr);
1752 static int nfs3_xdr_dec_create3res(struct rpc_rqst *req,
1753 struct xdr_stream *xdr,
1754 struct nfs3_diropres *result)
1756 enum nfs_stat status;
1759 error = decode_nfsstat3(xdr, &status);
1760 if (unlikely(error))
1762 if (status != NFS3_OK)
1764 error = decode_create3resok(xdr, result);
1768 error = decode_wcc_data(xdr, result->dir_attr);
1769 if (unlikely(error))
1771 return nfs3_stat_to_errno(status);
1777 * struct REMOVE3resok {
1781 * struct REMOVE3resfail {
1785 * union REMOVE3res switch (nfsstat3 status) {
1787 * REMOVE3resok resok;
1789 * REMOVE3resfail resfail;
1792 static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req,
1793 struct xdr_stream *xdr,
1794 struct nfs_removeres *result)
1796 enum nfs_stat status;
1799 error = decode_nfsstat3(xdr, &status);
1800 if (unlikely(error))
1802 error = decode_wcc_data(xdr, result->dir_attr);
1803 if (unlikely(error))
1805 if (status != NFS3_OK)
1810 return nfs3_stat_to_errno(status);
1816 * struct RENAME3resok {
1817 * wcc_data fromdir_wcc;
1818 * wcc_data todir_wcc;
1821 * struct RENAME3resfail {
1822 * wcc_data fromdir_wcc;
1823 * wcc_data todir_wcc;
1826 * union RENAME3res switch (nfsstat3 status) {
1828 * RENAME3resok resok;
1830 * RENAME3resfail resfail;
1833 static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req,
1834 struct xdr_stream *xdr,
1835 struct nfs_renameres *result)
1837 enum nfs_stat status;
1840 error = decode_nfsstat3(xdr, &status);
1841 if (unlikely(error))
1843 error = decode_wcc_data(xdr, result->old_fattr);
1844 if (unlikely(error))
1846 error = decode_wcc_data(xdr, result->new_fattr);
1847 if (unlikely(error))
1849 if (status != NFS3_OK)
1854 return nfs3_stat_to_errno(status);
1860 * struct LINK3resok {
1861 * post_op_attr file_attributes;
1862 * wcc_data linkdir_wcc;
1865 * struct LINK3resfail {
1866 * post_op_attr file_attributes;
1867 * wcc_data linkdir_wcc;
1870 * union LINK3res switch (nfsstat3 status) {
1874 * LINK3resfail resfail;
1877 static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1878 struct nfs3_linkres *result)
1880 enum nfs_stat status;
1883 error = decode_nfsstat3(xdr, &status);
1884 if (unlikely(error))
1886 error = decode_post_op_attr(xdr, result->fattr);
1887 if (unlikely(error))
1889 error = decode_wcc_data(xdr, result->dir_attr);
1890 if (unlikely(error))
1892 if (status != NFS3_OK)
1897 return nfs3_stat_to_errno(status);
1901 * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in
1902 * the local page cache
1903 * @xdr: XDR stream where entry resides
1904 * @entry: buffer to fill in with entry data
1905 * @plus: boolean indicating whether this should be a readdirplus entry
1907 * Returns zero if successful, otherwise a negative errno value is
1910 * This function is not invoked during READDIR reply decoding, but
1911 * rather whenever an application invokes the getdents(2) system call
1912 * on a directory already in our cache.
1920 * fhandle3 filehandle;
1921 * post_op_attr3 attributes;
1922 * entry3 *nextentry;
1926 * struct entryplus3 {
1930 * post_op_attr name_attributes;
1931 * post_op_fh3 name_handle;
1932 * entryplus3 *nextentry;
1935 int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
1938 struct nfs_entry old = *entry;
1942 p = xdr_inline_decode(xdr, 4);
1943 if (unlikely(p == NULL))
1945 if (*p == xdr_zero) {
1946 p = xdr_inline_decode(xdr, 4);
1947 if (unlikely(p == NULL))
1955 error = decode_fileid3(xdr, &entry->ino);
1956 if (unlikely(error))
1959 error = decode_inline_filename3(xdr, &entry->name, &entry->len);
1960 if (unlikely(error))
1963 entry->prev_cookie = entry->cookie;
1964 error = decode_cookie3(xdr, &entry->cookie);
1965 if (unlikely(error))
1968 entry->d_type = DT_UNKNOWN;
1971 entry->fattr->valid = 0;
1972 error = decode_post_op_attr(xdr, entry->fattr);
1973 if (unlikely(error))
1975 if (entry->fattr->valid & NFS_ATTR_FATTR_V3)
1976 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
1978 /* In fact, a post_op_fh3: */
1979 p = xdr_inline_decode(xdr, 4);
1980 if (unlikely(p == NULL))
1982 if (*p != xdr_zero) {
1983 error = decode_nfs_fh3(xdr, entry->fh);
1984 if (unlikely(error)) {
1985 if (error == -E2BIG)
1990 zero_nfs_fh3(entry->fh);
1996 print_overflow_msg(__func__, xdr);
1999 dprintk("NFS: directory entry contains invalid file handle\n");
2005 * 3.3.16 READDIR3res
2012 * struct READDIR3resok {
2013 * post_op_attr dir_attributes;
2014 * cookieverf3 cookieverf;
2018 * struct READDIR3resfail {
2019 * post_op_attr dir_attributes;
2022 * union READDIR3res switch (nfsstat3 status) {
2024 * READDIR3resok resok;
2026 * READDIR3resfail resfail;
2029 * Read the directory contents into the page cache, but otherwise
2030 * don't touch them. The actual decoding is done by nfs3_decode_entry()
2031 * during subsequent nfs_readdir() calls.
2033 static int decode_dirlist3(struct xdr_stream *xdr)
2035 return xdr_read_pages(xdr, xdr->buf->page_len);
2038 static int decode_readdir3resok(struct xdr_stream *xdr,
2039 struct nfs3_readdirres *result)
2043 error = decode_post_op_attr(xdr, result->dir_attr);
2044 if (unlikely(error))
2046 /* XXX: do we need to check if result->verf != NULL ? */
2047 error = decode_cookieverf3(xdr, result->verf);
2048 if (unlikely(error))
2050 error = decode_dirlist3(xdr);
2055 static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req,
2056 struct xdr_stream *xdr,
2057 struct nfs3_readdirres *result)
2059 enum nfs_stat status;
2062 error = decode_nfsstat3(xdr, &status);
2063 if (unlikely(error))
2065 if (status != NFS3_OK)
2067 error = decode_readdir3resok(xdr, result);
2071 error = decode_post_op_attr(xdr, result->dir_attr);
2072 if (unlikely(error))
2074 return nfs3_stat_to_errno(status);
2080 * struct FSSTAT3resok {
2081 * post_op_attr obj_attributes;
2091 * struct FSSTAT3resfail {
2092 * post_op_attr obj_attributes;
2095 * union FSSTAT3res switch (nfsstat3 status) {
2097 * FSSTAT3resok resok;
2099 * FSSTAT3resfail resfail;
2102 static int decode_fsstat3resok(struct xdr_stream *xdr,
2103 struct nfs_fsstat *result)
2107 p = xdr_inline_decode(xdr, 8 * 6 + 4);
2108 if (unlikely(p == NULL))
2110 p = xdr_decode_size3(p, &result->tbytes);
2111 p = xdr_decode_size3(p, &result->fbytes);
2112 p = xdr_decode_size3(p, &result->abytes);
2113 p = xdr_decode_size3(p, &result->tfiles);
2114 p = xdr_decode_size3(p, &result->ffiles);
2115 xdr_decode_size3(p, &result->afiles);
2116 /* ignore invarsec */
2119 print_overflow_msg(__func__, xdr);
2123 static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req,
2124 struct xdr_stream *xdr,
2125 struct nfs_fsstat *result)
2127 enum nfs_stat status;
2130 error = decode_nfsstat3(xdr, &status);
2131 if (unlikely(error))
2133 error = decode_post_op_attr(xdr, result->fattr);
2134 if (unlikely(error))
2136 if (status != NFS3_OK)
2138 error = decode_fsstat3resok(xdr, result);
2142 return nfs3_stat_to_errno(status);
2148 * struct FSINFO3resok {
2149 * post_op_attr obj_attributes;
2157 * size3 maxfilesize;
2158 * nfstime3 time_delta;
2159 * uint32 properties;
2162 * struct FSINFO3resfail {
2163 * post_op_attr obj_attributes;
2166 * union FSINFO3res switch (nfsstat3 status) {
2168 * FSINFO3resok resok;
2170 * FSINFO3resfail resfail;
2173 static int decode_fsinfo3resok(struct xdr_stream *xdr,
2174 struct nfs_fsinfo *result)
2178 p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4);
2179 if (unlikely(p == NULL))
2181 result->rtmax = be32_to_cpup(p++);
2182 result->rtpref = be32_to_cpup(p++);
2183 result->rtmult = be32_to_cpup(p++);
2184 result->wtmax = be32_to_cpup(p++);
2185 result->wtpref = be32_to_cpup(p++);
2186 result->wtmult = be32_to_cpup(p++);
2187 result->dtpref = be32_to_cpup(p++);
2188 p = xdr_decode_size3(p, &result->maxfilesize);
2189 xdr_decode_nfstime3(p, &result->time_delta);
2191 /* ignore properties */
2192 result->lease_time = 0;
2195 print_overflow_msg(__func__, xdr);
2199 static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req,
2200 struct xdr_stream *xdr,
2201 struct nfs_fsinfo *result)
2203 enum nfs_stat status;
2206 error = decode_nfsstat3(xdr, &status);
2207 if (unlikely(error))
2209 error = decode_post_op_attr(xdr, result->fattr);
2210 if (unlikely(error))
2212 if (status != NFS3_OK)
2214 error = decode_fsinfo3resok(xdr, result);
2218 return nfs3_stat_to_errno(status);
2222 * 3.3.20 PATHCONF3res
2224 * struct PATHCONF3resok {
2225 * post_op_attr obj_attributes;
2229 * bool chown_restricted;
2230 * bool case_insensitive;
2231 * bool case_preserving;
2234 * struct PATHCONF3resfail {
2235 * post_op_attr obj_attributes;
2238 * union PATHCONF3res switch (nfsstat3 status) {
2240 * PATHCONF3resok resok;
2242 * PATHCONF3resfail resfail;
2245 static int decode_pathconf3resok(struct xdr_stream *xdr,
2246 struct nfs_pathconf *result)
2250 p = xdr_inline_decode(xdr, 4 * 6);
2251 if (unlikely(p == NULL))
2253 result->max_link = be32_to_cpup(p++);
2254 result->max_namelen = be32_to_cpup(p);
2255 /* ignore remaining fields */
2258 print_overflow_msg(__func__, xdr);
2262 static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req,
2263 struct xdr_stream *xdr,
2264 struct nfs_pathconf *result)
2266 enum nfs_stat status;
2269 error = decode_nfsstat3(xdr, &status);
2270 if (unlikely(error))
2272 error = decode_post_op_attr(xdr, result->fattr);
2273 if (unlikely(error))
2275 if (status != NFS3_OK)
2277 error = decode_pathconf3resok(xdr, result);
2281 return nfs3_stat_to_errno(status);
2287 * struct COMMIT3resok {
2288 * wcc_data file_wcc;
2292 * struct COMMIT3resfail {
2293 * wcc_data file_wcc;
2296 * union COMMIT3res switch (nfsstat3 status) {
2298 * COMMIT3resok resok;
2300 * COMMIT3resfail resfail;
2303 static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req,
2304 struct xdr_stream *xdr,
2305 struct nfs_commitres *result)
2307 enum nfs_stat status;
2310 error = decode_nfsstat3(xdr, &status);
2311 if (unlikely(error))
2313 error = decode_wcc_data(xdr, result->fattr);
2314 if (unlikely(error))
2316 if (status != NFS3_OK)
2318 error = decode_writeverf3(xdr, &result->verf->verifier);
2322 return nfs3_stat_to_errno(status);
2325 #ifdef CONFIG_NFS_V3_ACL
2327 static inline int decode_getacl3resok(struct xdr_stream *xdr,
2328 struct nfs3_getaclres *result)
2330 struct posix_acl **acl;
2331 unsigned int *aclcnt;
2335 error = decode_post_op_attr(xdr, result->fattr);
2336 if (unlikely(error))
2338 error = decode_uint32(xdr, &result->mask);
2339 if (unlikely(error))
2342 if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
2345 hdrlen = xdr_stream_pos(xdr);
2348 if (result->mask & NFS_ACL)
2349 acl = &result->acl_access;
2351 if (result->mask & NFS_ACLCNT)
2352 aclcnt = &result->acl_access_count;
2353 error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl);
2354 if (unlikely(error <= 0))
2358 if (result->mask & NFS_DFACL)
2359 acl = &result->acl_default;
2361 if (result->mask & NFS_DFACLCNT)
2362 aclcnt = &result->acl_default_count;
2363 error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl);
2364 if (unlikely(error <= 0))
2371 static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req,
2372 struct xdr_stream *xdr,
2373 struct nfs3_getaclres *result)
2375 enum nfs_stat status;
2378 error = decode_nfsstat3(xdr, &status);
2379 if (unlikely(error))
2381 if (status != NFS3_OK)
2383 error = decode_getacl3resok(xdr, result);
2387 return nfs3_stat_to_errno(status);
2390 static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req,
2391 struct xdr_stream *xdr,
2392 struct nfs_fattr *result)
2394 enum nfs_stat status;
2397 error = decode_nfsstat3(xdr, &status);
2398 if (unlikely(error))
2400 if (status != NFS3_OK)
2402 error = decode_post_op_attr(xdr, result);
2406 return nfs3_stat_to_errno(status);
2409 #endif /* CONFIG_NFS_V3_ACL */
2413 * We need to translate between nfs status return values and
2414 * the local errno values which may not be the same.
2416 static const struct {
2421 { NFSERR_PERM, -EPERM },
2422 { NFSERR_NOENT, -ENOENT },
2423 { NFSERR_IO, -errno_NFSERR_IO},
2424 { NFSERR_NXIO, -ENXIO },
2425 /* { NFSERR_EAGAIN, -EAGAIN }, */
2426 { NFSERR_ACCES, -EACCES },
2427 { NFSERR_EXIST, -EEXIST },
2428 { NFSERR_XDEV, -EXDEV },
2429 { NFSERR_NODEV, -ENODEV },
2430 { NFSERR_NOTDIR, -ENOTDIR },
2431 { NFSERR_ISDIR, -EISDIR },
2432 { NFSERR_INVAL, -EINVAL },
2433 { NFSERR_FBIG, -EFBIG },
2434 { NFSERR_NOSPC, -ENOSPC },
2435 { NFSERR_ROFS, -EROFS },
2436 { NFSERR_MLINK, -EMLINK },
2437 { NFSERR_NAMETOOLONG, -ENAMETOOLONG },
2438 { NFSERR_NOTEMPTY, -ENOTEMPTY },
2439 { NFSERR_DQUOT, -EDQUOT },
2440 { NFSERR_STALE, -ESTALE },
2441 { NFSERR_REMOTE, -EREMOTE },
2443 { NFSERR_WFLUSH, -EWFLUSH },
2445 { NFSERR_BADHANDLE, -EBADHANDLE },
2446 { NFSERR_NOT_SYNC, -ENOTSYNC },
2447 { NFSERR_BAD_COOKIE, -EBADCOOKIE },
2448 { NFSERR_NOTSUPP, -ENOTSUPP },
2449 { NFSERR_TOOSMALL, -ETOOSMALL },
2450 { NFSERR_SERVERFAULT, -EREMOTEIO },
2451 { NFSERR_BADTYPE, -EBADTYPE },
2452 { NFSERR_JUKEBOX, -EJUKEBOX },
2457 * nfs3_stat_to_errno - convert an NFS status code to a local errno
2458 * @status: NFS status code to convert
2460 * Returns a local errno value, or -EIO if the NFS status code is
2461 * not recognized. This function is used jointly by NFSv2 and NFSv3.
2463 static int nfs3_stat_to_errno(enum nfs_stat status)
2467 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
2468 if (nfs_errtbl[i].stat == (int)status)
2469 return nfs_errtbl[i].errno;
2471 dprintk("NFS: Unrecognized nfs status value: %u\n", status);
2472 return nfs_errtbl[i].errno;
2476 #define PROC(proc, argtype, restype, timer) \
2477 [NFS3PROC_##proc] = { \
2478 .p_proc = NFS3PROC_##proc, \
2479 .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \
2480 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \
2481 .p_arglen = NFS3_##argtype##args_sz, \
2482 .p_replen = NFS3_##restype##res_sz, \
2484 .p_statidx = NFS3PROC_##proc, \
2488 struct rpc_procinfo nfs3_procedures[] = {
2489 PROC(GETATTR, getattr, getattr, 1),
2490 PROC(SETATTR, setattr, setattr, 0),
2491 PROC(LOOKUP, lookup, lookup, 2),
2492 PROC(ACCESS, access, access, 1),
2493 PROC(READLINK, readlink, readlink, 3),
2494 PROC(READ, read, read, 3),
2495 PROC(WRITE, write, write, 4),
2496 PROC(CREATE, create, create, 0),
2497 PROC(MKDIR, mkdir, create, 0),
2498 PROC(SYMLINK, symlink, create, 0),
2499 PROC(MKNOD, mknod, create, 0),
2500 PROC(REMOVE, remove, remove, 0),
2501 PROC(RMDIR, lookup, setattr, 0),
2502 PROC(RENAME, rename, rename, 0),
2503 PROC(LINK, link, link, 0),
2504 PROC(READDIR, readdir, readdir, 3),
2505 PROC(READDIRPLUS, readdirplus, readdir, 3),
2506 PROC(FSSTAT, getattr, fsstat, 0),
2507 PROC(FSINFO, getattr, fsinfo, 0),
2508 PROC(PATHCONF, getattr, pathconf, 0),
2509 PROC(COMMIT, commit, commit, 5),
2512 const struct rpc_version nfs_version3 = {
2514 .nrprocs = ARRAY_SIZE(nfs3_procedures),
2515 .procs = nfs3_procedures
2518 #ifdef CONFIG_NFS_V3_ACL
2519 static struct rpc_procinfo nfs3_acl_procedures[] = {
2520 [ACLPROC3_GETACL] = {
2521 .p_proc = ACLPROC3_GETACL,
2522 .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args,
2523 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res,
2524 .p_arglen = ACL3_getaclargs_sz,
2525 .p_replen = ACL3_getaclres_sz,
2529 [ACLPROC3_SETACL] = {
2530 .p_proc = ACLPROC3_SETACL,
2531 .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args,
2532 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res,
2533 .p_arglen = ACL3_setaclargs_sz,
2534 .p_replen = ACL3_setaclres_sz,
2540 const struct rpc_version nfsacl_version3 = {
2542 .nrprocs = sizeof(nfs3_acl_procedures)/
2543 sizeof(nfs3_acl_procedures[0]),
2544 .procs = nfs3_acl_procedures,
2546 #endif /* CONFIG_NFS_V3_ACL */