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)
90 * Map file type to S_IFMT bits
92 static const umode_t nfs_type2fmt[] = {
104 * While encoding arguments, set up the reply buffer in advance to
105 * receive reply data directly into the page cache.
107 static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
108 unsigned int base, unsigned int len,
109 unsigned int bufsize)
111 struct rpc_auth *auth = req->rq_cred->cr_auth;
114 replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize;
115 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
119 * Handle decode buffer overflows out-of-line.
121 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
123 dprintk("NFS: %s prematurely hit the end of our receive buffer. "
124 "Remaining buffer length is %tu words.\n",
125 func, xdr->end - xdr->p);
130 * Encode/decode NFSv3 basic data types
132 * Basic NFSv3 data types are defined in section 2.5 of RFC 1813:
133 * "NFS Version 3 Protocol Specification".
135 * Not all basic data types have their own encoding and decoding
136 * functions. For run-time efficiency, some data types are encoded
140 static void encode_uint32(struct xdr_stream *xdr, u32 value)
142 __be32 *p = xdr_reserve_space(xdr, 4);
143 *p = cpu_to_be32(value);
146 static int decode_uint32(struct xdr_stream *xdr, u32 *value)
150 p = xdr_inline_decode(xdr, 4);
151 if (unlikely(p == NULL))
153 *value = be32_to_cpup(p);
156 print_overflow_msg(__func__, xdr);
160 static int decode_uint64(struct xdr_stream *xdr, u64 *value)
164 p = xdr_inline_decode(xdr, 8);
165 if (unlikely(p == NULL))
167 xdr_decode_hyper(p, value);
170 print_overflow_msg(__func__, xdr);
177 * typedef uint64 fileid3;
179 static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid)
181 return xdr_decode_hyper(p, fileid);
184 static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid)
186 return decode_uint64(xdr, fileid);
192 * typedef string filename3<>;
194 static void encode_filename3(struct xdr_stream *xdr,
195 const char *name, u32 length)
199 BUG_ON(length > NFS3_MAXNAMLEN);
200 p = xdr_reserve_space(xdr, 4 + length);
201 xdr_encode_opaque(p, name, length);
204 static int decode_inline_filename3(struct xdr_stream *xdr,
205 const char **name, u32 *length)
210 p = xdr_inline_decode(xdr, 4);
211 if (unlikely(p == NULL))
213 count = be32_to_cpup(p);
214 if (count > NFS3_MAXNAMLEN)
215 goto out_nametoolong;
216 p = xdr_inline_decode(xdr, count);
217 if (unlikely(p == NULL))
219 *name = (const char *)p;
224 dprintk("NFS: returned filename too long: %u\n", count);
225 return -ENAMETOOLONG;
227 print_overflow_msg(__func__, xdr);
234 * typedef string nfspath3<>;
236 static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages,
239 BUG_ON(length > NFS3_MAXPATHLEN);
240 encode_uint32(xdr, length);
241 xdr_write_pages(xdr, pages, 0, length);
244 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 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
257 recvd = xdr->buf->len - hdrlen;
258 if (unlikely(count > recvd))
261 xdr_read_pages(xdr, count);
262 xdr_terminate_string(xdr->buf, count);
266 dprintk("NFS: returned pathname too long: %u\n", count);
267 return -ENAMETOOLONG;
269 dprintk("NFS: server cheating in pathname result: "
270 "count %u > recvd %u\n", count, recvd);
273 print_overflow_msg(__func__, xdr);
280 * typedef uint64 cookie3
282 static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie)
284 return xdr_encode_hyper(p, cookie);
287 static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie)
289 return decode_uint64(xdr, cookie);
295 * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE];
297 static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier)
299 memcpy(p, verifier, NFS3_COOKIEVERFSIZE);
300 return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE);
303 static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier)
307 p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE);
308 if (unlikely(p == NULL))
310 memcpy(verifier, p, NFS3_COOKIEVERFSIZE);
313 print_overflow_msg(__func__, xdr);
320 * typedef opaque createverf3[NFS3_CREATEVERFSIZE];
322 static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier)
326 p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE);
327 memcpy(p, verifier, NFS3_CREATEVERFSIZE);
330 static int decode_writeverf3(struct xdr_stream *xdr, __be32 *verifier)
334 p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE);
335 if (unlikely(p == NULL))
337 memcpy(verifier, p, NFS3_WRITEVERFSIZE);
340 print_overflow_msg(__func__, xdr);
347 * typedef uint64 size3;
349 static __be32 *xdr_decode_size3(__be32 *p, u64 *size)
351 return xdr_decode_hyper(p, size);
362 #define NFS3_OK NFS_OK
364 static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status)
368 p = xdr_inline_decode(xdr, 4);
369 if (unlikely(p == NULL))
371 *status = be32_to_cpup(p);
374 print_overflow_msg(__func__, xdr);
391 static void encode_ftype3(struct xdr_stream *xdr, const u32 type)
393 BUG_ON(type > NF3FIFO);
394 encode_uint32(xdr, type);
397 static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode)
401 type = be32_to_cpup(p++);
404 *mode = nfs_type2fmt[type];
416 static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev)
420 p = xdr_reserve_space(xdr, 8);
421 *p++ = cpu_to_be32(MAJOR(rdev));
422 *p = cpu_to_be32(MINOR(rdev));
425 static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev)
427 unsigned int major, minor;
429 major = be32_to_cpup(p++);
430 minor = be32_to_cpup(p++);
431 *rdev = MKDEV(major, minor);
432 if (MAJOR(*rdev) != major || MINOR(*rdev) != minor)
441 * opaque data<NFS3_FHSIZE>;
444 static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh)
448 BUG_ON(fh->size > NFS3_FHSIZE);
449 p = xdr_reserve_space(xdr, 4 + fh->size);
450 xdr_encode_opaque(p, fh->data, fh->size);
453 static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
458 p = xdr_inline_decode(xdr, 4);
459 if (unlikely(p == NULL))
461 length = be32_to_cpup(p++);
462 if (unlikely(length > NFS3_FHSIZE))
464 p = xdr_inline_decode(xdr, length);
465 if (unlikely(p == NULL))
468 memcpy(fh->data, p, length);
471 dprintk("NFS: file handle size (%u) too big\n", length);
474 print_overflow_msg(__func__, xdr);
478 static void zero_nfs_fh3(struct nfs_fh *fh)
480 memset(fh, 0, sizeof(*fh));
491 static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep)
493 *p++ = cpu_to_be32(timep->tv_sec);
494 *p++ = cpu_to_be32(timep->tv_nsec);
498 static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep)
500 timep->tv_sec = be32_to_cpup(p++);
501 timep->tv_nsec = be32_to_cpup(p++);
510 * SET_TO_SERVER_TIME = 1,
511 * SET_TO_CLIENT_TIME = 2
514 * union set_mode3 switch (bool set_it) {
521 * union set_uid3 switch (bool set_it) {
528 * union set_gid3 switch (bool set_it) {
535 * union set_size3 switch (bool set_it) {
542 * union set_atime switch (time_how set_it) {
543 * case SET_TO_CLIENT_TIME:
549 * union set_mtime switch (time_how set_it) {
550 * case SET_TO_CLIENT_TIME:
565 static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
571 * In order to make only a single xdr_reserve_space() call,
572 * pre-compute the total number of bytes to be reserved.
573 * Six boolean values, one for each set_foo field, are always
574 * present in the encoded result, so start there.
577 if (attr->ia_valid & ATTR_MODE)
579 if (attr->ia_valid & ATTR_UID)
581 if (attr->ia_valid & ATTR_GID)
583 if (attr->ia_valid & ATTR_SIZE)
585 if (attr->ia_valid & ATTR_ATIME_SET)
587 if (attr->ia_valid & ATTR_MTIME_SET)
589 p = xdr_reserve_space(xdr, nbytes);
591 if (attr->ia_valid & ATTR_MODE) {
593 *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO);
597 if (attr->ia_valid & ATTR_UID) {
599 *p++ = cpu_to_be32(attr->ia_uid);
603 if (attr->ia_valid & ATTR_GID) {
605 *p++ = cpu_to_be32(attr->ia_gid);
609 if (attr->ia_valid & ATTR_SIZE) {
611 p = xdr_encode_hyper(p, (u64)attr->ia_size);
615 if (attr->ia_valid & ATTR_ATIME_SET) {
617 p = xdr_encode_nfstime3(p, &attr->ia_atime);
618 } else if (attr->ia_valid & ATTR_ATIME) {
623 if (attr->ia_valid & ATTR_MTIME_SET) {
625 xdr_encode_nfstime3(p, &attr->ia_mtime);
626 } else if (attr->ia_valid & ATTR_MTIME) {
651 static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
656 p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2);
657 if (unlikely(p == NULL))
660 p = xdr_decode_ftype3(p, &fmode);
662 fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode;
663 fattr->nlink = be32_to_cpup(p++);
664 fattr->uid = be32_to_cpup(p++);
665 fattr->gid = be32_to_cpup(p++);
667 p = xdr_decode_size3(p, &fattr->size);
668 p = xdr_decode_size3(p, &fattr->du.nfs3.used);
669 p = xdr_decode_specdata3(p, &fattr->rdev);
671 p = xdr_decode_hyper(p, &fattr->fsid.major);
672 fattr->fsid.minor = 0;
674 p = xdr_decode_fileid3(p, &fattr->fileid);
675 p = xdr_decode_nfstime3(p, &fattr->atime);
676 p = xdr_decode_nfstime3(p, &fattr->mtime);
677 xdr_decode_nfstime3(p, &fattr->ctime);
679 fattr->valid |= NFS_ATTR_FATTR_V3;
682 print_overflow_msg(__func__, xdr);
689 * union post_op_attr switch (bool attributes_follow) {
696 static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
700 p = xdr_inline_decode(xdr, 4);
701 if (unlikely(p == NULL))
704 return decode_fattr3(xdr, fattr);
707 print_overflow_msg(__func__, xdr);
719 static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
723 p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2);
724 if (unlikely(p == NULL))
727 fattr->valid |= NFS_ATTR_FATTR_PRESIZE
728 | NFS_ATTR_FATTR_PREMTIME
729 | NFS_ATTR_FATTR_PRECTIME;
731 p = xdr_decode_size3(p, &fattr->pre_size);
732 p = xdr_decode_nfstime3(p, &fattr->pre_mtime);
733 xdr_decode_nfstime3(p, &fattr->pre_ctime);
737 print_overflow_msg(__func__, xdr);
743 * union pre_op_attr switch (bool attributes_follow) {
745 * wcc_attr attributes;
753 * pre_op_attr before;
754 * post_op_attr after;
757 static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
761 p = xdr_inline_decode(xdr, 4);
762 if (unlikely(p == NULL))
765 return decode_wcc_attr(xdr, fattr);
768 print_overflow_msg(__func__, xdr);
772 static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr)
776 error = decode_pre_op_attr(xdr, fattr);
779 error = decode_post_op_attr(xdr, fattr);
787 * union post_op_fh3 switch (bool handle_follows) {
794 static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
796 __be32 *p = xdr_inline_decode(xdr, 4);
797 if (unlikely(p == NULL))
800 return decode_nfs_fh3(xdr, fh);
804 print_overflow_msg(__func__, xdr);
811 * struct diropargs3 {
816 static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh,
817 const char *name, u32 length)
819 encode_nfs_fh3(xdr, fh);
820 encode_filename3(xdr, name, length);
825 * NFSv3 XDR encode functions
827 * NFSv3 argument types are defined in section 3.3 of RFC 1813:
828 * "NFS Version 3 Protocol Specification".
834 * struct GETATTR3args {
838 static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req,
839 struct xdr_stream *xdr,
840 const struct nfs_fh *fh)
842 encode_nfs_fh3(xdr, fh);
848 * union sattrguard3 switch (bool check) {
850 * nfstime3 obj_ctime;
855 * struct SETATTR3args {
857 * sattr3 new_attributes;
861 static void encode_sattrguard3(struct xdr_stream *xdr,
862 const struct nfs3_sattrargs *args)
867 p = xdr_reserve_space(xdr, 4 + 8);
869 xdr_encode_nfstime3(p, &args->guardtime);
871 p = xdr_reserve_space(xdr, 4);
876 static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req,
877 struct xdr_stream *xdr,
878 const struct nfs3_sattrargs *args)
880 encode_nfs_fh3(xdr, args->fh);
881 encode_sattr3(xdr, args->sattr);
882 encode_sattrguard3(xdr, args);
888 * struct LOOKUP3args {
892 static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req,
893 struct xdr_stream *xdr,
894 const struct nfs3_diropargs *args)
896 encode_diropargs3(xdr, args->fh, args->name, args->len);
902 * struct ACCESS3args {
907 static void encode_access3args(struct xdr_stream *xdr,
908 const struct nfs3_accessargs *args)
910 encode_nfs_fh3(xdr, args->fh);
911 encode_uint32(xdr, args->access);
914 static void nfs3_xdr_enc_access3args(struct rpc_rqst *req,
915 struct xdr_stream *xdr,
916 const struct nfs3_accessargs *args)
918 encode_access3args(xdr, args);
922 * 3.3.5 READLINK3args
924 * struct READLINK3args {
928 static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req,
929 struct xdr_stream *xdr,
930 const struct nfs3_readlinkargs *args)
932 encode_nfs_fh3(xdr, args->fh);
933 prepare_reply_buffer(req, args->pages, args->pgbase,
934 args->pglen, NFS3_readlinkres_sz);
946 static void encode_read3args(struct xdr_stream *xdr,
947 const struct nfs_readargs *args)
951 encode_nfs_fh3(xdr, args->fh);
953 p = xdr_reserve_space(xdr, 8 + 4);
954 p = xdr_encode_hyper(p, args->offset);
955 *p = cpu_to_be32(args->count);
958 static void nfs3_xdr_enc_read3args(struct rpc_rqst *req,
959 struct xdr_stream *xdr,
960 const struct nfs_readargs *args)
962 encode_read3args(xdr, args);
963 prepare_reply_buffer(req, args->pages, args->pgbase,
964 args->count, NFS3_readres_sz);
965 req->rq_rcv_buf.flags |= XDRBUF_READ;
977 * struct WRITE3args {
985 static void encode_write3args(struct xdr_stream *xdr,
986 const struct nfs_writeargs *args)
990 encode_nfs_fh3(xdr, args->fh);
992 p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4);
993 p = xdr_encode_hyper(p, args->offset);
994 *p++ = cpu_to_be32(args->count);
995 *p++ = cpu_to_be32(args->stable);
996 *p = cpu_to_be32(args->count);
997 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1000 static void nfs3_xdr_enc_write3args(struct rpc_rqst *req,
1001 struct xdr_stream *xdr,
1002 const struct nfs_writeargs *args)
1004 encode_write3args(xdr, args);
1005 xdr->buf->flags |= XDRBUF_WRITE;
1011 * enum createmode3 {
1017 * union createhow3 switch (createmode3 mode) {
1020 * sattr3 obj_attributes;
1025 * struct CREATE3args {
1030 static void encode_createhow3(struct xdr_stream *xdr,
1031 const struct nfs3_createargs *args)
1033 encode_uint32(xdr, args->createmode);
1034 switch (args->createmode) {
1035 case NFS3_CREATE_UNCHECKED:
1036 case NFS3_CREATE_GUARDED:
1037 encode_sattr3(xdr, args->sattr);
1039 case NFS3_CREATE_EXCLUSIVE:
1040 encode_createverf3(xdr, args->verifier);
1047 static void nfs3_xdr_enc_create3args(struct rpc_rqst *req,
1048 struct xdr_stream *xdr,
1049 const struct nfs3_createargs *args)
1051 encode_diropargs3(xdr, args->fh, args->name, args->len);
1052 encode_createhow3(xdr, args);
1058 * struct MKDIR3args {
1060 * sattr3 attributes;
1063 static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req,
1064 struct xdr_stream *xdr,
1065 const struct nfs3_mkdirargs *args)
1067 encode_diropargs3(xdr, args->fh, args->name, args->len);
1068 encode_sattr3(xdr, args->sattr);
1072 * 3.3.10 SYMLINK3args
1074 * struct symlinkdata3 {
1075 * sattr3 symlink_attributes;
1076 * nfspath3 symlink_data;
1079 * struct SYMLINK3args {
1081 * symlinkdata3 symlink;
1084 static void encode_symlinkdata3(struct xdr_stream *xdr,
1085 const struct nfs3_symlinkargs *args)
1087 encode_sattr3(xdr, args->sattr);
1088 encode_nfspath3(xdr, args->pages, args->pathlen);
1091 static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req,
1092 struct xdr_stream *xdr,
1093 const struct nfs3_symlinkargs *args)
1095 encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
1096 encode_symlinkdata3(xdr, args);
1102 * struct devicedata3 {
1103 * sattr3 dev_attributes;
1107 * union mknoddata3 switch (ftype3 type) {
1110 * devicedata3 device;
1113 * sattr3 pipe_attributes;
1118 * struct MKNOD3args {
1123 static void encode_devicedata3(struct xdr_stream *xdr,
1124 const struct nfs3_mknodargs *args)
1126 encode_sattr3(xdr, args->sattr);
1127 encode_specdata3(xdr, args->rdev);
1130 static void encode_mknoddata3(struct xdr_stream *xdr,
1131 const struct nfs3_mknodargs *args)
1133 encode_ftype3(xdr, args->type);
1134 switch (args->type) {
1137 encode_devicedata3(xdr, args);
1141 encode_sattr3(xdr, args->sattr);
1151 static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req,
1152 struct xdr_stream *xdr,
1153 const struct nfs3_mknodargs *args)
1155 encode_diropargs3(xdr, args->fh, args->name, args->len);
1156 encode_mknoddata3(xdr, args);
1160 * 3.3.12 REMOVE3args
1162 * struct REMOVE3args {
1163 * diropargs3 object;
1166 static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req,
1167 struct xdr_stream *xdr,
1168 const struct nfs_removeargs *args)
1170 encode_diropargs3(xdr, args->fh, args->name.name, args->name.len);
1174 * 3.3.14 RENAME3args
1176 * struct RENAME3args {
1181 static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req,
1182 struct xdr_stream *xdr,
1183 const struct nfs_renameargs *args)
1185 const struct qstr *old = args->old_name;
1186 const struct qstr *new = args->new_name;
1188 encode_diropargs3(xdr, args->old_dir, old->name, old->len);
1189 encode_diropargs3(xdr, args->new_dir, new->name, new->len);
1195 * struct LINK3args {
1200 static void nfs3_xdr_enc_link3args(struct rpc_rqst *req,
1201 struct xdr_stream *xdr,
1202 const struct nfs3_linkargs *args)
1204 encode_nfs_fh3(xdr, args->fromfh);
1205 encode_diropargs3(xdr, args->tofh, args->toname, args->tolen);
1209 * 3.3.16 READDIR3args
1211 * struct READDIR3args {
1214 * cookieverf3 cookieverf;
1218 static void encode_readdir3args(struct xdr_stream *xdr,
1219 const struct nfs3_readdirargs *args)
1223 encode_nfs_fh3(xdr, args->fh);
1225 p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4);
1226 p = xdr_encode_cookie3(p, args->cookie);
1227 p = xdr_encode_cookieverf3(p, args->verf);
1228 *p = cpu_to_be32(args->count);
1231 static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req,
1232 struct xdr_stream *xdr,
1233 const struct nfs3_readdirargs *args)
1235 encode_readdir3args(xdr, args);
1236 prepare_reply_buffer(req, args->pages, 0,
1237 args->count, NFS3_readdirres_sz);
1241 * 3.3.17 READDIRPLUS3args
1243 * struct READDIRPLUS3args {
1246 * cookieverf3 cookieverf;
1251 static void encode_readdirplus3args(struct xdr_stream *xdr,
1252 const struct nfs3_readdirargs *args)
1256 encode_nfs_fh3(xdr, args->fh);
1258 p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4);
1259 p = xdr_encode_cookie3(p, args->cookie);
1260 p = xdr_encode_cookieverf3(p, args->verf);
1263 * readdirplus: need dircount + buffer size.
1264 * We just make sure we make dircount big enough
1266 *p++ = cpu_to_be32(args->count >> 3);
1268 *p = cpu_to_be32(args->count);
1271 static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req,
1272 struct xdr_stream *xdr,
1273 const struct nfs3_readdirargs *args)
1275 encode_readdirplus3args(xdr, args);
1276 prepare_reply_buffer(req, args->pages, 0,
1277 args->count, NFS3_readdirres_sz);
1281 * 3.3.21 COMMIT3args
1283 * struct COMMIT3args {
1289 static void encode_commit3args(struct xdr_stream *xdr,
1290 const struct nfs_writeargs *args)
1294 encode_nfs_fh3(xdr, args->fh);
1296 p = xdr_reserve_space(xdr, 8 + 4);
1297 p = xdr_encode_hyper(p, args->offset);
1298 *p = cpu_to_be32(args->count);
1301 static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req,
1302 struct xdr_stream *xdr,
1303 const struct nfs_writeargs *args)
1305 encode_commit3args(xdr, args);
1308 #ifdef CONFIG_NFS_V3_ACL
1310 static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req,
1311 struct xdr_stream *xdr,
1312 const struct nfs3_getaclargs *args)
1314 encode_nfs_fh3(xdr, args->fh);
1315 encode_uint32(xdr, args->mask);
1316 if (args->mask & (NFS_ACL | NFS_DFACL))
1317 prepare_reply_buffer(req, args->pages, 0,
1318 NFSACL_MAXPAGES << PAGE_SHIFT,
1322 static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
1323 struct xdr_stream *xdr,
1324 const struct nfs3_setaclargs *args)
1329 encode_nfs_fh3(xdr, NFS_FH(args->inode));
1330 encode_uint32(xdr, args->mask);
1331 if (args->npages != 0)
1332 xdr_write_pages(xdr, args->pages, 0, args->len);
1334 base = req->rq_slen;
1335 error = nfsacl_encode(xdr->buf, base, args->inode,
1336 (args->mask & NFS_ACL) ?
1337 args->acl_access : NULL, 1, 0);
1339 error = nfsacl_encode(xdr->buf, base + error, args->inode,
1340 (args->mask & NFS_DFACL) ?
1341 args->acl_default : NULL, 1,
1346 #endif /* CONFIG_NFS_V3_ACL */
1349 * NFSv3 XDR decode functions
1351 * NFSv3 result types are defined in section 3.3 of RFC 1813:
1352 * "NFS Version 3 Protocol Specification".
1358 * struct GETATTR3resok {
1359 * fattr3 obj_attributes;
1362 * union GETATTR3res switch (nfsstat3 status) {
1364 * GETATTR3resok resok;
1369 static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req,
1370 struct xdr_stream *xdr,
1371 struct nfs_fattr *result)
1373 enum nfs_stat status;
1376 error = decode_nfsstat3(xdr, &status);
1377 if (unlikely(error))
1379 if (status != NFS3_OK)
1381 error = decode_fattr3(xdr, result);
1385 return nfs_stat_to_errno(status);
1391 * struct SETATTR3resok {
1395 * struct SETATTR3resfail {
1399 * union SETATTR3res switch (nfsstat3 status) {
1401 * SETATTR3resok resok;
1403 * SETATTR3resfail resfail;
1406 static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req,
1407 struct xdr_stream *xdr,
1408 struct nfs_fattr *result)
1410 enum nfs_stat status;
1413 error = decode_nfsstat3(xdr, &status);
1414 if (unlikely(error))
1416 error = decode_wcc_data(xdr, result);
1417 if (unlikely(error))
1419 if (status != NFS3_OK)
1424 return nfs_stat_to_errno(status);
1430 * struct LOOKUP3resok {
1432 * post_op_attr obj_attributes;
1433 * post_op_attr dir_attributes;
1436 * struct LOOKUP3resfail {
1437 * post_op_attr dir_attributes;
1440 * union LOOKUP3res switch (nfsstat3 status) {
1442 * LOOKUP3resok resok;
1444 * LOOKUP3resfail resfail;
1447 static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req,
1448 struct xdr_stream *xdr,
1449 struct nfs3_diropres *result)
1451 enum nfs_stat status;
1454 error = decode_nfsstat3(xdr, &status);
1455 if (unlikely(error))
1457 if (status != NFS3_OK)
1459 error = decode_nfs_fh3(xdr, result->fh);
1460 if (unlikely(error))
1462 error = decode_post_op_attr(xdr, result->fattr);
1463 if (unlikely(error))
1465 error = decode_post_op_attr(xdr, result->dir_attr);
1469 error = decode_post_op_attr(xdr, result->dir_attr);
1470 if (unlikely(error))
1472 return nfs_stat_to_errno(status);
1478 * struct ACCESS3resok {
1479 * post_op_attr obj_attributes;
1483 * struct ACCESS3resfail {
1484 * post_op_attr obj_attributes;
1487 * union ACCESS3res switch (nfsstat3 status) {
1489 * ACCESS3resok resok;
1491 * ACCESS3resfail resfail;
1494 static int nfs3_xdr_dec_access3res(struct rpc_rqst *req,
1495 struct xdr_stream *xdr,
1496 struct nfs3_accessres *result)
1498 enum nfs_stat status;
1501 error = decode_nfsstat3(xdr, &status);
1502 if (unlikely(error))
1504 error = decode_post_op_attr(xdr, result->fattr);
1505 if (unlikely(error))
1507 if (status != NFS3_OK)
1509 error = decode_uint32(xdr, &result->access);
1513 return nfs_stat_to_errno(status);
1517 * 3.3.5 READLINK3res
1519 * struct READLINK3resok {
1520 * post_op_attr symlink_attributes;
1524 * struct READLINK3resfail {
1525 * post_op_attr symlink_attributes;
1528 * union READLINK3res switch (nfsstat3 status) {
1530 * READLINK3resok resok;
1532 * READLINK3resfail resfail;
1535 static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req,
1536 struct xdr_stream *xdr,
1537 struct nfs_fattr *result)
1539 enum nfs_stat status;
1542 error = decode_nfsstat3(xdr, &status);
1543 if (unlikely(error))
1545 error = decode_post_op_attr(xdr, result);
1546 if (unlikely(error))
1548 if (status != NFS3_OK)
1550 error = decode_nfspath3(xdr);
1554 return nfs_stat_to_errno(status);
1560 * struct READ3resok {
1561 * post_op_attr file_attributes;
1567 * struct READ3resfail {
1568 * post_op_attr file_attributes;
1571 * union READ3res switch (nfsstat3 status) {
1575 * READ3resfail resfail;
1578 static int decode_read3resok(struct xdr_stream *xdr,
1579 struct nfs_readres *result)
1581 u32 eof, count, ocount, recvd;
1585 p = xdr_inline_decode(xdr, 4 + 4 + 4);
1586 if (unlikely(p == NULL))
1588 count = be32_to_cpup(p++);
1589 eof = be32_to_cpup(p++);
1590 ocount = be32_to_cpup(p++);
1591 if (unlikely(ocount != count))
1593 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
1594 recvd = xdr->buf->len - hdrlen;
1595 if (unlikely(count > recvd))
1599 xdr_read_pages(xdr, count);
1601 result->count = count;
1604 dprintk("NFS: READ count doesn't match length of opaque: "
1605 "count %u != ocount %u\n", count, ocount);
1608 dprintk("NFS: server cheating in read result: "
1609 "count %u > recvd %u\n", count, recvd);
1614 print_overflow_msg(__func__, xdr);
1618 static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1619 struct nfs_readres *result)
1621 enum nfs_stat status;
1624 error = decode_nfsstat3(xdr, &status);
1625 if (unlikely(error))
1627 error = decode_post_op_attr(xdr, result->fattr);
1628 if (unlikely(error))
1630 if (status != NFS3_OK)
1632 error = decode_read3resok(xdr, result);
1636 return nfs_stat_to_errno(status);
1648 * struct WRITE3resok {
1649 * wcc_data file_wcc;
1651 * stable_how committed;
1655 * struct WRITE3resfail {
1656 * wcc_data file_wcc;
1659 * union WRITE3res switch (nfsstat3 status) {
1661 * WRITE3resok resok;
1663 * WRITE3resfail resfail;
1666 static int decode_write3resok(struct xdr_stream *xdr,
1667 struct nfs_writeres *result)
1671 p = xdr_inline_decode(xdr, 4 + 4 + NFS3_WRITEVERFSIZE);
1672 if (unlikely(p == NULL))
1674 result->count = be32_to_cpup(p++);
1675 result->verf->committed = be32_to_cpup(p++);
1676 if (unlikely(result->verf->committed > NFS_FILE_SYNC))
1678 memcpy(result->verf->verifier, p, NFS3_WRITEVERFSIZE);
1679 return result->count;
1681 dprintk("NFS: bad stable_how value: %u\n", result->verf->committed);
1684 print_overflow_msg(__func__, xdr);
1688 static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1689 struct nfs_writeres *result)
1691 enum nfs_stat status;
1694 error = decode_nfsstat3(xdr, &status);
1695 if (unlikely(error))
1697 error = decode_wcc_data(xdr, result->fattr);
1698 if (unlikely(error))
1700 if (status != NFS3_OK)
1702 error = decode_write3resok(xdr, result);
1706 return nfs_stat_to_errno(status);
1712 * struct CREATE3resok {
1714 * post_op_attr obj_attributes;
1718 * struct CREATE3resfail {
1722 * union CREATE3res switch (nfsstat3 status) {
1724 * CREATE3resok resok;
1726 * CREATE3resfail resfail;
1729 static int decode_create3resok(struct xdr_stream *xdr,
1730 struct nfs3_diropres *result)
1734 error = decode_post_op_fh3(xdr, result->fh);
1735 if (unlikely(error))
1737 error = decode_post_op_attr(xdr, result->fattr);
1738 if (unlikely(error))
1740 /* The server isn't required to return a file handle.
1741 * If it didn't, force the client to perform a LOOKUP
1742 * to determine the correct file handle and attribute
1743 * values for the new object. */
1744 if (result->fh->size == 0)
1745 result->fattr->valid = 0;
1746 error = decode_wcc_data(xdr, result->dir_attr);
1751 static int nfs3_xdr_dec_create3res(struct rpc_rqst *req,
1752 struct xdr_stream *xdr,
1753 struct nfs3_diropres *result)
1755 enum nfs_stat status;
1758 error = decode_nfsstat3(xdr, &status);
1759 if (unlikely(error))
1761 if (status != NFS3_OK)
1763 error = decode_create3resok(xdr, result);
1767 error = decode_wcc_data(xdr, result->dir_attr);
1768 if (unlikely(error))
1770 return nfs_stat_to_errno(status);
1776 * struct REMOVE3resok {
1780 * struct REMOVE3resfail {
1784 * union REMOVE3res switch (nfsstat3 status) {
1786 * REMOVE3resok resok;
1788 * REMOVE3resfail resfail;
1791 static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req,
1792 struct xdr_stream *xdr,
1793 struct nfs_removeres *result)
1795 enum nfs_stat status;
1798 error = decode_nfsstat3(xdr, &status);
1799 if (unlikely(error))
1801 error = decode_wcc_data(xdr, result->dir_attr);
1802 if (unlikely(error))
1804 if (status != NFS3_OK)
1809 return nfs_stat_to_errno(status);
1815 * struct RENAME3resok {
1816 * wcc_data fromdir_wcc;
1817 * wcc_data todir_wcc;
1820 * struct RENAME3resfail {
1821 * wcc_data fromdir_wcc;
1822 * wcc_data todir_wcc;
1825 * union RENAME3res switch (nfsstat3 status) {
1827 * RENAME3resok resok;
1829 * RENAME3resfail resfail;
1832 static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req,
1833 struct xdr_stream *xdr,
1834 struct nfs_renameres *result)
1836 enum nfs_stat status;
1839 error = decode_nfsstat3(xdr, &status);
1840 if (unlikely(error))
1842 error = decode_wcc_data(xdr, result->old_fattr);
1843 if (unlikely(error))
1845 error = decode_wcc_data(xdr, result->new_fattr);
1846 if (unlikely(error))
1848 if (status != NFS3_OK)
1853 return nfs_stat_to_errno(status);
1859 * struct LINK3resok {
1860 * post_op_attr file_attributes;
1861 * wcc_data linkdir_wcc;
1864 * struct LINK3resfail {
1865 * post_op_attr file_attributes;
1866 * wcc_data linkdir_wcc;
1869 * union LINK3res switch (nfsstat3 status) {
1873 * LINK3resfail resfail;
1876 static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1877 struct nfs3_linkres *result)
1879 enum nfs_stat status;
1882 error = decode_nfsstat3(xdr, &status);
1883 if (unlikely(error))
1885 error = decode_post_op_attr(xdr, result->fattr);
1886 if (unlikely(error))
1888 error = decode_wcc_data(xdr, result->dir_attr);
1889 if (unlikely(error))
1891 if (status != NFS3_OK)
1896 return nfs_stat_to_errno(status);
1900 * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in
1901 * the local page cache
1902 * @xdr: XDR stream where entry resides
1903 * @entry: buffer to fill in with entry data
1904 * @plus: boolean indicating whether this should be a readdirplus entry
1906 * Returns zero if successful, otherwise a negative errno value is
1909 * This function is not invoked during READDIR reply decoding, but
1910 * rather whenever an application invokes the getdents(2) system call
1911 * on a directory already in our cache.
1919 * fhandle3 filehandle;
1920 * post_op_attr3 attributes;
1921 * entry3 *nextentry;
1925 * struct entryplus3 {
1929 * post_op_attr name_attributes;
1930 * post_op_fh3 name_handle;
1931 * entryplus3 *nextentry;
1934 int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
1937 struct nfs_entry old = *entry;
1941 p = xdr_inline_decode(xdr, 4);
1942 if (unlikely(p == NULL))
1944 if (*p == xdr_zero) {
1945 p = xdr_inline_decode(xdr, 4);
1946 if (unlikely(p == NULL))
1954 error = decode_fileid3(xdr, &entry->ino);
1955 if (unlikely(error))
1958 error = decode_inline_filename3(xdr, &entry->name, &entry->len);
1959 if (unlikely(error))
1962 entry->prev_cookie = entry->cookie;
1963 error = decode_cookie3(xdr, &entry->cookie);
1964 if (unlikely(error))
1967 entry->d_type = DT_UNKNOWN;
1970 entry->fattr->valid = 0;
1971 error = decode_post_op_attr(xdr, entry->fattr);
1972 if (unlikely(error))
1974 if (entry->fattr->valid & NFS_ATTR_FATTR_V3)
1975 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
1977 /* In fact, a post_op_fh3: */
1978 p = xdr_inline_decode(xdr, 4);
1979 if (unlikely(p == NULL))
1981 if (*p != xdr_zero) {
1982 error = decode_nfs_fh3(xdr, entry->fh);
1983 if (unlikely(error)) {
1984 if (error == -E2BIG)
1989 zero_nfs_fh3(entry->fh);
1995 print_overflow_msg(__func__, xdr);
1998 dprintk("NFS: directory entry contains invalid file handle\n");
2004 * 3.3.16 READDIR3res
2011 * struct READDIR3resok {
2012 * post_op_attr dir_attributes;
2013 * cookieverf3 cookieverf;
2017 * struct READDIR3resfail {
2018 * post_op_attr dir_attributes;
2021 * union READDIR3res switch (nfsstat3 status) {
2023 * READDIR3resok resok;
2025 * READDIR3resfail resfail;
2028 * Read the directory contents into the page cache, but otherwise
2029 * don't touch them. The actual decoding is done by nfs3_decode_entry()
2030 * during subsequent nfs_readdir() calls.
2032 static int decode_dirlist3(struct xdr_stream *xdr)
2037 pglen = xdr->buf->page_len;
2038 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
2039 recvd = xdr->buf->len - hdrlen;
2040 if (unlikely(pglen > recvd))
2043 xdr_read_pages(xdr, pglen);
2046 dprintk("NFS: server cheating in readdir result: "
2047 "pglen %u > recvd %u\n", pglen, recvd);
2052 static int decode_readdir3resok(struct xdr_stream *xdr,
2053 struct nfs3_readdirres *result)
2057 error = decode_post_op_attr(xdr, result->dir_attr);
2058 if (unlikely(error))
2060 /* XXX: do we need to check if result->verf != NULL ? */
2061 error = decode_cookieverf3(xdr, result->verf);
2062 if (unlikely(error))
2064 error = decode_dirlist3(xdr);
2069 static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req,
2070 struct xdr_stream *xdr,
2071 struct nfs3_readdirres *result)
2073 enum nfs_stat status;
2076 error = decode_nfsstat3(xdr, &status);
2077 if (unlikely(error))
2079 if (status != NFS3_OK)
2081 error = decode_readdir3resok(xdr, result);
2085 error = decode_post_op_attr(xdr, result->dir_attr);
2086 if (unlikely(error))
2088 return nfs_stat_to_errno(status);
2094 * struct FSSTAT3resok {
2095 * post_op_attr obj_attributes;
2105 * struct FSSTAT3resfail {
2106 * post_op_attr obj_attributes;
2109 * union FSSTAT3res switch (nfsstat3 status) {
2111 * FSSTAT3resok resok;
2113 * FSSTAT3resfail resfail;
2116 static int decode_fsstat3resok(struct xdr_stream *xdr,
2117 struct nfs_fsstat *result)
2121 p = xdr_inline_decode(xdr, 8 * 6 + 4);
2122 if (unlikely(p == NULL))
2124 p = xdr_decode_size3(p, &result->tbytes);
2125 p = xdr_decode_size3(p, &result->fbytes);
2126 p = xdr_decode_size3(p, &result->abytes);
2127 p = xdr_decode_size3(p, &result->tfiles);
2128 p = xdr_decode_size3(p, &result->ffiles);
2129 xdr_decode_size3(p, &result->afiles);
2130 /* ignore invarsec */
2133 print_overflow_msg(__func__, xdr);
2137 static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req,
2138 struct xdr_stream *xdr,
2139 struct nfs_fsstat *result)
2141 enum nfs_stat status;
2144 error = decode_nfsstat3(xdr, &status);
2145 if (unlikely(error))
2147 error = decode_post_op_attr(xdr, result->fattr);
2148 if (unlikely(error))
2150 if (status != NFS3_OK)
2152 error = decode_fsstat3resok(xdr, result);
2156 return nfs_stat_to_errno(status);
2162 * struct FSINFO3resok {
2163 * post_op_attr obj_attributes;
2171 * size3 maxfilesize;
2172 * nfstime3 time_delta;
2173 * uint32 properties;
2176 * struct FSINFO3resfail {
2177 * post_op_attr obj_attributes;
2180 * union FSINFO3res switch (nfsstat3 status) {
2182 * FSINFO3resok resok;
2184 * FSINFO3resfail resfail;
2187 static int decode_fsinfo3resok(struct xdr_stream *xdr,
2188 struct nfs_fsinfo *result)
2192 p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4);
2193 if (unlikely(p == NULL))
2195 result->rtmax = be32_to_cpup(p++);
2196 result->rtpref = be32_to_cpup(p++);
2197 result->rtmult = be32_to_cpup(p++);
2198 result->wtmax = be32_to_cpup(p++);
2199 result->wtpref = be32_to_cpup(p++);
2200 result->wtmult = be32_to_cpup(p++);
2201 result->dtpref = be32_to_cpup(p++);
2202 p = xdr_decode_size3(p, &result->maxfilesize);
2203 xdr_decode_nfstime3(p, &result->time_delta);
2205 /* ignore properties */
2206 result->lease_time = 0;
2209 print_overflow_msg(__func__, xdr);
2213 static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req,
2214 struct xdr_stream *xdr,
2215 struct nfs_fsinfo *result)
2217 enum nfs_stat status;
2220 error = decode_nfsstat3(xdr, &status);
2221 if (unlikely(error))
2223 error = decode_post_op_attr(xdr, result->fattr);
2224 if (unlikely(error))
2226 if (status != NFS3_OK)
2228 error = decode_fsinfo3resok(xdr, result);
2232 return nfs_stat_to_errno(status);
2236 * 3.3.20 PATHCONF3res
2238 * struct PATHCONF3resok {
2239 * post_op_attr obj_attributes;
2243 * bool chown_restricted;
2244 * bool case_insensitive;
2245 * bool case_preserving;
2248 * struct PATHCONF3resfail {
2249 * post_op_attr obj_attributes;
2252 * union PATHCONF3res switch (nfsstat3 status) {
2254 * PATHCONF3resok resok;
2256 * PATHCONF3resfail resfail;
2259 static int decode_pathconf3resok(struct xdr_stream *xdr,
2260 struct nfs_pathconf *result)
2264 p = xdr_inline_decode(xdr, 4 * 6);
2265 if (unlikely(p == NULL))
2267 result->max_link = be32_to_cpup(p++);
2268 result->max_namelen = be32_to_cpup(p);
2269 /* ignore remaining fields */
2272 print_overflow_msg(__func__, xdr);
2276 static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req,
2277 struct xdr_stream *xdr,
2278 struct nfs_pathconf *result)
2280 enum nfs_stat status;
2283 error = decode_nfsstat3(xdr, &status);
2284 if (unlikely(error))
2286 error = decode_post_op_attr(xdr, result->fattr);
2287 if (unlikely(error))
2289 if (status != NFS3_OK)
2291 error = decode_pathconf3resok(xdr, result);
2295 return nfs_stat_to_errno(status);
2301 * struct COMMIT3resok {
2302 * wcc_data file_wcc;
2306 * struct COMMIT3resfail {
2307 * wcc_data file_wcc;
2310 * union COMMIT3res switch (nfsstat3 status) {
2312 * COMMIT3resok resok;
2314 * COMMIT3resfail resfail;
2317 static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req,
2318 struct xdr_stream *xdr,
2319 struct nfs_writeres *result)
2321 enum nfs_stat status;
2324 error = decode_nfsstat3(xdr, &status);
2325 if (unlikely(error))
2327 error = decode_wcc_data(xdr, result->fattr);
2328 if (unlikely(error))
2330 if (status != NFS3_OK)
2332 error = decode_writeverf3(xdr, result->verf->verifier);
2336 return nfs_stat_to_errno(status);
2339 #ifdef CONFIG_NFS_V3_ACL
2341 static inline int decode_getacl3resok(struct xdr_stream *xdr,
2342 struct nfs3_getaclres *result)
2344 struct posix_acl **acl;
2345 unsigned int *aclcnt;
2349 error = decode_post_op_attr(xdr, result->fattr);
2350 if (unlikely(error))
2352 error = decode_uint32(xdr, &result->mask);
2353 if (unlikely(error))
2356 if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
2359 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
2362 if (result->mask & NFS_ACL)
2363 acl = &result->acl_access;
2365 if (result->mask & NFS_ACLCNT)
2366 aclcnt = &result->acl_access_count;
2367 error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl);
2368 if (unlikely(error <= 0))
2372 if (result->mask & NFS_DFACL)
2373 acl = &result->acl_default;
2375 if (result->mask & NFS_DFACLCNT)
2376 aclcnt = &result->acl_default_count;
2377 error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl);
2378 if (unlikely(error <= 0))
2385 static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req,
2386 struct xdr_stream *xdr,
2387 struct nfs3_getaclres *result)
2389 enum nfs_stat status;
2392 error = decode_nfsstat3(xdr, &status);
2393 if (unlikely(error))
2395 if (status != NFS3_OK)
2397 error = decode_getacl3resok(xdr, result);
2401 return nfs_stat_to_errno(status);
2404 static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req,
2405 struct xdr_stream *xdr,
2406 struct nfs_fattr *result)
2408 enum nfs_stat status;
2411 error = decode_nfsstat3(xdr, &status);
2412 if (unlikely(error))
2414 if (status != NFS3_OK)
2416 error = decode_post_op_attr(xdr, result);
2420 return nfs_stat_to_errno(status);
2423 #endif /* CONFIG_NFS_V3_ACL */
2425 #define PROC(proc, argtype, restype, timer) \
2426 [NFS3PROC_##proc] = { \
2427 .p_proc = NFS3PROC_##proc, \
2428 .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \
2429 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \
2430 .p_arglen = NFS3_##argtype##args_sz, \
2431 .p_replen = NFS3_##restype##res_sz, \
2433 .p_statidx = NFS3PROC_##proc, \
2437 struct rpc_procinfo nfs3_procedures[] = {
2438 PROC(GETATTR, getattr, getattr, 1),
2439 PROC(SETATTR, setattr, setattr, 0),
2440 PROC(LOOKUP, lookup, lookup, 2),
2441 PROC(ACCESS, access, access, 1),
2442 PROC(READLINK, readlink, readlink, 3),
2443 PROC(READ, read, read, 3),
2444 PROC(WRITE, write, write, 4),
2445 PROC(CREATE, create, create, 0),
2446 PROC(MKDIR, mkdir, create, 0),
2447 PROC(SYMLINK, symlink, create, 0),
2448 PROC(MKNOD, mknod, create, 0),
2449 PROC(REMOVE, remove, remove, 0),
2450 PROC(RMDIR, lookup, setattr, 0),
2451 PROC(RENAME, rename, rename, 0),
2452 PROC(LINK, link, link, 0),
2453 PROC(READDIR, readdir, readdir, 3),
2454 PROC(READDIRPLUS, readdirplus, readdir, 3),
2455 PROC(FSSTAT, getattr, fsstat, 0),
2456 PROC(FSINFO, getattr, fsinfo, 0),
2457 PROC(PATHCONF, getattr, pathconf, 0),
2458 PROC(COMMIT, commit, commit, 5),
2461 struct rpc_version nfs_version3 = {
2463 .nrprocs = ARRAY_SIZE(nfs3_procedures),
2464 .procs = nfs3_procedures
2467 #ifdef CONFIG_NFS_V3_ACL
2468 static struct rpc_procinfo nfs3_acl_procedures[] = {
2469 [ACLPROC3_GETACL] = {
2470 .p_proc = ACLPROC3_GETACL,
2471 .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args,
2472 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res,
2473 .p_arglen = ACL3_getaclargs_sz,
2474 .p_replen = ACL3_getaclres_sz,
2478 [ACLPROC3_SETACL] = {
2479 .p_proc = ACLPROC3_SETACL,
2480 .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args,
2481 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res,
2482 .p_arglen = ACL3_setaclargs_sz,
2483 .p_replen = ACL3_setaclres_sz,
2489 struct rpc_version nfsacl_version3 = {
2491 .nrprocs = sizeof(nfs3_acl_procedures)/
2492 sizeof(nfs3_acl_procedures[0]),
2493 .procs = nfs3_acl_procedures,
2495 #endif /* CONFIG_NFS_V3_ACL */