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(from_kuid(&init_user_ns, attr->ia_uid));
599 if (attr->ia_valid & ATTR_GID) {
601 *p++ = cpu_to_be32(from_kgid(&init_user_ns, 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 = make_kuid(&init_user_ns, be32_to_cpup(p++));
661 if (!uid_valid(fattr->uid))
663 fattr->gid = make_kgid(&init_user_ns, be32_to_cpup(p++));
664 if (!gid_valid(fattr->gid))
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);
678 fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime);
680 fattr->valid |= NFS_ATTR_FATTR_V3;
683 dprintk("NFS: returned invalid uid\n");
686 dprintk("NFS: returned invalid gid\n");
689 print_overflow_msg(__func__, xdr);
696 * union post_op_attr switch (bool attributes_follow) {
703 static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
707 p = xdr_inline_decode(xdr, 4);
708 if (unlikely(p == NULL))
711 return decode_fattr3(xdr, fattr);
714 print_overflow_msg(__func__, xdr);
726 static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
730 p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2);
731 if (unlikely(p == NULL))
734 fattr->valid |= NFS_ATTR_FATTR_PRESIZE
735 | NFS_ATTR_FATTR_PRECHANGE
736 | NFS_ATTR_FATTR_PREMTIME
737 | NFS_ATTR_FATTR_PRECTIME;
739 p = xdr_decode_size3(p, &fattr->pre_size);
740 p = xdr_decode_nfstime3(p, &fattr->pre_mtime);
741 xdr_decode_nfstime3(p, &fattr->pre_ctime);
742 fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime);
746 print_overflow_msg(__func__, xdr);
752 * union pre_op_attr switch (bool attributes_follow) {
754 * wcc_attr attributes;
762 * pre_op_attr before;
763 * post_op_attr after;
766 static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
770 p = xdr_inline_decode(xdr, 4);
771 if (unlikely(p == NULL))
774 return decode_wcc_attr(xdr, fattr);
777 print_overflow_msg(__func__, xdr);
781 static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr)
785 error = decode_pre_op_attr(xdr, fattr);
788 error = decode_post_op_attr(xdr, fattr);
796 * union post_op_fh3 switch (bool handle_follows) {
803 static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
805 __be32 *p = xdr_inline_decode(xdr, 4);
806 if (unlikely(p == NULL))
809 return decode_nfs_fh3(xdr, fh);
813 print_overflow_msg(__func__, xdr);
820 * struct diropargs3 {
825 static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh,
826 const char *name, u32 length)
828 encode_nfs_fh3(xdr, fh);
829 encode_filename3(xdr, name, length);
834 * NFSv3 XDR encode functions
836 * NFSv3 argument types are defined in section 3.3 of RFC 1813:
837 * "NFS Version 3 Protocol Specification".
843 * struct GETATTR3args {
847 static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req,
848 struct xdr_stream *xdr,
849 const struct nfs_fh *fh)
851 encode_nfs_fh3(xdr, fh);
857 * union sattrguard3 switch (bool check) {
859 * nfstime3 obj_ctime;
864 * struct SETATTR3args {
866 * sattr3 new_attributes;
870 static void encode_sattrguard3(struct xdr_stream *xdr,
871 const struct nfs3_sattrargs *args)
876 p = xdr_reserve_space(xdr, 4 + 8);
878 xdr_encode_nfstime3(p, &args->guardtime);
880 p = xdr_reserve_space(xdr, 4);
885 static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req,
886 struct xdr_stream *xdr,
887 const struct nfs3_sattrargs *args)
889 encode_nfs_fh3(xdr, args->fh);
890 encode_sattr3(xdr, args->sattr);
891 encode_sattrguard3(xdr, args);
897 * struct LOOKUP3args {
901 static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req,
902 struct xdr_stream *xdr,
903 const struct nfs3_diropargs *args)
905 encode_diropargs3(xdr, args->fh, args->name, args->len);
911 * struct ACCESS3args {
916 static void encode_access3args(struct xdr_stream *xdr,
917 const struct nfs3_accessargs *args)
919 encode_nfs_fh3(xdr, args->fh);
920 encode_uint32(xdr, args->access);
923 static void nfs3_xdr_enc_access3args(struct rpc_rqst *req,
924 struct xdr_stream *xdr,
925 const struct nfs3_accessargs *args)
927 encode_access3args(xdr, args);
931 * 3.3.5 READLINK3args
933 * struct READLINK3args {
937 static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req,
938 struct xdr_stream *xdr,
939 const struct nfs3_readlinkargs *args)
941 encode_nfs_fh3(xdr, args->fh);
942 prepare_reply_buffer(req, args->pages, args->pgbase,
943 args->pglen, NFS3_readlinkres_sz);
955 static void encode_read3args(struct xdr_stream *xdr,
956 const struct nfs_pgio_args *args)
960 encode_nfs_fh3(xdr, args->fh);
962 p = xdr_reserve_space(xdr, 8 + 4);
963 p = xdr_encode_hyper(p, args->offset);
964 *p = cpu_to_be32(args->count);
967 static void nfs3_xdr_enc_read3args(struct rpc_rqst *req,
968 struct xdr_stream *xdr,
969 const struct nfs_pgio_args *args)
971 encode_read3args(xdr, args);
972 prepare_reply_buffer(req, args->pages, args->pgbase,
973 args->count, NFS3_readres_sz);
974 req->rq_rcv_buf.flags |= XDRBUF_READ;
986 * struct WRITE3args {
994 static void encode_write3args(struct xdr_stream *xdr,
995 const struct nfs_pgio_args *args)
999 encode_nfs_fh3(xdr, args->fh);
1001 p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4);
1002 p = xdr_encode_hyper(p, args->offset);
1003 *p++ = cpu_to_be32(args->count);
1004 *p++ = cpu_to_be32(args->stable);
1005 *p = cpu_to_be32(args->count);
1006 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1009 static void nfs3_xdr_enc_write3args(struct rpc_rqst *req,
1010 struct xdr_stream *xdr,
1011 const struct nfs_pgio_args *args)
1013 encode_write3args(xdr, args);
1014 xdr->buf->flags |= XDRBUF_WRITE;
1020 * enum createmode3 {
1026 * union createhow3 switch (createmode3 mode) {
1029 * sattr3 obj_attributes;
1034 * struct CREATE3args {
1039 static void encode_createhow3(struct xdr_stream *xdr,
1040 const struct nfs3_createargs *args)
1042 encode_uint32(xdr, args->createmode);
1043 switch (args->createmode) {
1044 case NFS3_CREATE_UNCHECKED:
1045 case NFS3_CREATE_GUARDED:
1046 encode_sattr3(xdr, args->sattr);
1048 case NFS3_CREATE_EXCLUSIVE:
1049 encode_createverf3(xdr, args->verifier);
1056 static void nfs3_xdr_enc_create3args(struct rpc_rqst *req,
1057 struct xdr_stream *xdr,
1058 const struct nfs3_createargs *args)
1060 encode_diropargs3(xdr, args->fh, args->name, args->len);
1061 encode_createhow3(xdr, args);
1067 * struct MKDIR3args {
1069 * sattr3 attributes;
1072 static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req,
1073 struct xdr_stream *xdr,
1074 const struct nfs3_mkdirargs *args)
1076 encode_diropargs3(xdr, args->fh, args->name, args->len);
1077 encode_sattr3(xdr, args->sattr);
1081 * 3.3.10 SYMLINK3args
1083 * struct symlinkdata3 {
1084 * sattr3 symlink_attributes;
1085 * nfspath3 symlink_data;
1088 * struct SYMLINK3args {
1090 * symlinkdata3 symlink;
1093 static void encode_symlinkdata3(struct xdr_stream *xdr,
1094 const struct nfs3_symlinkargs *args)
1096 encode_sattr3(xdr, args->sattr);
1097 encode_nfspath3(xdr, args->pages, args->pathlen);
1100 static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req,
1101 struct xdr_stream *xdr,
1102 const struct nfs3_symlinkargs *args)
1104 encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
1105 encode_symlinkdata3(xdr, args);
1111 * struct devicedata3 {
1112 * sattr3 dev_attributes;
1116 * union mknoddata3 switch (ftype3 type) {
1119 * devicedata3 device;
1122 * sattr3 pipe_attributes;
1127 * struct MKNOD3args {
1132 static void encode_devicedata3(struct xdr_stream *xdr,
1133 const struct nfs3_mknodargs *args)
1135 encode_sattr3(xdr, args->sattr);
1136 encode_specdata3(xdr, args->rdev);
1139 static void encode_mknoddata3(struct xdr_stream *xdr,
1140 const struct nfs3_mknodargs *args)
1142 encode_ftype3(xdr, args->type);
1143 switch (args->type) {
1146 encode_devicedata3(xdr, args);
1150 encode_sattr3(xdr, args->sattr);
1160 static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req,
1161 struct xdr_stream *xdr,
1162 const struct nfs3_mknodargs *args)
1164 encode_diropargs3(xdr, args->fh, args->name, args->len);
1165 encode_mknoddata3(xdr, args);
1169 * 3.3.12 REMOVE3args
1171 * struct REMOVE3args {
1172 * diropargs3 object;
1175 static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req,
1176 struct xdr_stream *xdr,
1177 const struct nfs_removeargs *args)
1179 encode_diropargs3(xdr, args->fh, args->name.name, args->name.len);
1183 * 3.3.14 RENAME3args
1185 * struct RENAME3args {
1190 static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req,
1191 struct xdr_stream *xdr,
1192 const struct nfs_renameargs *args)
1194 const struct qstr *old = args->old_name;
1195 const struct qstr *new = args->new_name;
1197 encode_diropargs3(xdr, args->old_dir, old->name, old->len);
1198 encode_diropargs3(xdr, args->new_dir, new->name, new->len);
1204 * struct LINK3args {
1209 static void nfs3_xdr_enc_link3args(struct rpc_rqst *req,
1210 struct xdr_stream *xdr,
1211 const struct nfs3_linkargs *args)
1213 encode_nfs_fh3(xdr, args->fromfh);
1214 encode_diropargs3(xdr, args->tofh, args->toname, args->tolen);
1218 * 3.3.16 READDIR3args
1220 * struct READDIR3args {
1223 * cookieverf3 cookieverf;
1227 static void encode_readdir3args(struct xdr_stream *xdr,
1228 const struct nfs3_readdirargs *args)
1232 encode_nfs_fh3(xdr, args->fh);
1234 p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4);
1235 p = xdr_encode_cookie3(p, args->cookie);
1236 p = xdr_encode_cookieverf3(p, args->verf);
1237 *p = cpu_to_be32(args->count);
1240 static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req,
1241 struct xdr_stream *xdr,
1242 const struct nfs3_readdirargs *args)
1244 encode_readdir3args(xdr, args);
1245 prepare_reply_buffer(req, args->pages, 0,
1246 args->count, NFS3_readdirres_sz);
1250 * 3.3.17 READDIRPLUS3args
1252 * struct READDIRPLUS3args {
1255 * cookieverf3 cookieverf;
1260 static void encode_readdirplus3args(struct xdr_stream *xdr,
1261 const struct nfs3_readdirargs *args)
1265 encode_nfs_fh3(xdr, args->fh);
1267 p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4);
1268 p = xdr_encode_cookie3(p, args->cookie);
1269 p = xdr_encode_cookieverf3(p, args->verf);
1272 * readdirplus: need dircount + buffer size.
1273 * We just make sure we make dircount big enough
1275 *p++ = cpu_to_be32(args->count >> 3);
1277 *p = cpu_to_be32(args->count);
1280 static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req,
1281 struct xdr_stream *xdr,
1282 const struct nfs3_readdirargs *args)
1284 encode_readdirplus3args(xdr, args);
1285 prepare_reply_buffer(req, args->pages, 0,
1286 args->count, NFS3_readdirres_sz);
1290 * 3.3.21 COMMIT3args
1292 * struct COMMIT3args {
1298 static void encode_commit3args(struct xdr_stream *xdr,
1299 const struct nfs_commitargs *args)
1303 encode_nfs_fh3(xdr, args->fh);
1305 p = xdr_reserve_space(xdr, 8 + 4);
1306 p = xdr_encode_hyper(p, args->offset);
1307 *p = cpu_to_be32(args->count);
1310 static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req,
1311 struct xdr_stream *xdr,
1312 const struct nfs_commitargs *args)
1314 encode_commit3args(xdr, args);
1317 #ifdef CONFIG_NFS_V3_ACL
1319 static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req,
1320 struct xdr_stream *xdr,
1321 const struct nfs3_getaclargs *args)
1323 encode_nfs_fh3(xdr, args->fh);
1324 encode_uint32(xdr, args->mask);
1325 if (args->mask & (NFS_ACL | NFS_DFACL))
1326 prepare_reply_buffer(req, args->pages, 0,
1327 NFSACL_MAXPAGES << PAGE_SHIFT,
1331 static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
1332 struct xdr_stream *xdr,
1333 const struct nfs3_setaclargs *args)
1338 encode_nfs_fh3(xdr, NFS_FH(args->inode));
1339 encode_uint32(xdr, args->mask);
1341 base = req->rq_slen;
1342 if (args->npages != 0)
1343 xdr_write_pages(xdr, args->pages, 0, args->len);
1345 xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE);
1347 error = nfsacl_encode(xdr->buf, base, args->inode,
1348 (args->mask & NFS_ACL) ?
1349 args->acl_access : NULL, 1, 0);
1350 /* FIXME: this is just broken */
1352 error = nfsacl_encode(xdr->buf, base + error, args->inode,
1353 (args->mask & NFS_DFACL) ?
1354 args->acl_default : NULL, 1,
1359 #endif /* CONFIG_NFS_V3_ACL */
1362 * NFSv3 XDR decode functions
1364 * NFSv3 result types are defined in section 3.3 of RFC 1813:
1365 * "NFS Version 3 Protocol Specification".
1371 * struct GETATTR3resok {
1372 * fattr3 obj_attributes;
1375 * union GETATTR3res switch (nfsstat3 status) {
1377 * GETATTR3resok resok;
1382 static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req,
1383 struct xdr_stream *xdr,
1384 struct nfs_fattr *result)
1386 enum nfs_stat status;
1389 error = decode_nfsstat3(xdr, &status);
1390 if (unlikely(error))
1392 if (status != NFS3_OK)
1394 error = decode_fattr3(xdr, result);
1398 return nfs3_stat_to_errno(status);
1404 * struct SETATTR3resok {
1408 * struct SETATTR3resfail {
1412 * union SETATTR3res switch (nfsstat3 status) {
1414 * SETATTR3resok resok;
1416 * SETATTR3resfail resfail;
1419 static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req,
1420 struct xdr_stream *xdr,
1421 struct nfs_fattr *result)
1423 enum nfs_stat status;
1426 error = decode_nfsstat3(xdr, &status);
1427 if (unlikely(error))
1429 error = decode_wcc_data(xdr, result);
1430 if (unlikely(error))
1432 if (status != NFS3_OK)
1437 return nfs3_stat_to_errno(status);
1443 * struct LOOKUP3resok {
1445 * post_op_attr obj_attributes;
1446 * post_op_attr dir_attributes;
1449 * struct LOOKUP3resfail {
1450 * post_op_attr dir_attributes;
1453 * union LOOKUP3res switch (nfsstat3 status) {
1455 * LOOKUP3resok resok;
1457 * LOOKUP3resfail resfail;
1460 static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req,
1461 struct xdr_stream *xdr,
1462 struct nfs3_diropres *result)
1464 enum nfs_stat status;
1467 error = decode_nfsstat3(xdr, &status);
1468 if (unlikely(error))
1470 if (status != NFS3_OK)
1472 error = decode_nfs_fh3(xdr, result->fh);
1473 if (unlikely(error))
1475 error = decode_post_op_attr(xdr, result->fattr);
1476 if (unlikely(error))
1478 error = decode_post_op_attr(xdr, result->dir_attr);
1482 error = decode_post_op_attr(xdr, result->dir_attr);
1483 if (unlikely(error))
1485 return nfs3_stat_to_errno(status);
1491 * struct ACCESS3resok {
1492 * post_op_attr obj_attributes;
1496 * struct ACCESS3resfail {
1497 * post_op_attr obj_attributes;
1500 * union ACCESS3res switch (nfsstat3 status) {
1502 * ACCESS3resok resok;
1504 * ACCESS3resfail resfail;
1507 static int nfs3_xdr_dec_access3res(struct rpc_rqst *req,
1508 struct xdr_stream *xdr,
1509 struct nfs3_accessres *result)
1511 enum nfs_stat status;
1514 error = decode_nfsstat3(xdr, &status);
1515 if (unlikely(error))
1517 error = decode_post_op_attr(xdr, result->fattr);
1518 if (unlikely(error))
1520 if (status != NFS3_OK)
1522 error = decode_uint32(xdr, &result->access);
1526 return nfs3_stat_to_errno(status);
1530 * 3.3.5 READLINK3res
1532 * struct READLINK3resok {
1533 * post_op_attr symlink_attributes;
1537 * struct READLINK3resfail {
1538 * post_op_attr symlink_attributes;
1541 * union READLINK3res switch (nfsstat3 status) {
1543 * READLINK3resok resok;
1545 * READLINK3resfail resfail;
1548 static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req,
1549 struct xdr_stream *xdr,
1550 struct nfs_fattr *result)
1552 enum nfs_stat status;
1555 error = decode_nfsstat3(xdr, &status);
1556 if (unlikely(error))
1558 error = decode_post_op_attr(xdr, result);
1559 if (unlikely(error))
1561 if (status != NFS3_OK)
1563 error = decode_nfspath3(xdr);
1567 return nfs3_stat_to_errno(status);
1573 * struct READ3resok {
1574 * post_op_attr file_attributes;
1580 * struct READ3resfail {
1581 * post_op_attr file_attributes;
1584 * union READ3res switch (nfsstat3 status) {
1588 * READ3resfail resfail;
1591 static int decode_read3resok(struct xdr_stream *xdr,
1592 struct nfs_pgio_res *result)
1594 u32 eof, count, ocount, recvd;
1597 p = xdr_inline_decode(xdr, 4 + 4 + 4);
1598 if (unlikely(p == NULL))
1600 count = be32_to_cpup(p++);
1601 eof = be32_to_cpup(p++);
1602 ocount = be32_to_cpup(p++);
1603 if (unlikely(ocount != count))
1605 recvd = xdr_read_pages(xdr, count);
1606 if (unlikely(count > recvd))
1610 result->count = count;
1613 dprintk("NFS: READ count doesn't match length of opaque: "
1614 "count %u != ocount %u\n", count, ocount);
1617 dprintk("NFS: server cheating in read result: "
1618 "count %u > recvd %u\n", count, recvd);
1623 print_overflow_msg(__func__, xdr);
1627 static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1628 struct nfs_pgio_res *result)
1630 enum nfs_stat status;
1633 error = decode_nfsstat3(xdr, &status);
1634 if (unlikely(error))
1636 error = decode_post_op_attr(xdr, result->fattr);
1637 if (unlikely(error))
1639 result->op_status = status;
1640 if (status != NFS3_OK)
1642 error = decode_read3resok(xdr, result);
1646 return nfs3_stat_to_errno(status);
1658 * struct WRITE3resok {
1659 * wcc_data file_wcc;
1661 * stable_how committed;
1665 * struct WRITE3resfail {
1666 * wcc_data file_wcc;
1669 * union WRITE3res switch (nfsstat3 status) {
1671 * WRITE3resok resok;
1673 * WRITE3resfail resfail;
1676 static int decode_write3resok(struct xdr_stream *xdr,
1677 struct nfs_pgio_res *result)
1681 p = xdr_inline_decode(xdr, 4 + 4);
1682 if (unlikely(p == NULL))
1684 result->count = be32_to_cpup(p++);
1685 result->verf->committed = be32_to_cpup(p++);
1686 if (unlikely(result->verf->committed > NFS_FILE_SYNC))
1688 if (decode_writeverf3(xdr, &result->verf->verifier))
1690 return result->count;
1692 dprintk("NFS: bad stable_how value: %u\n", result->verf->committed);
1695 print_overflow_msg(__func__, xdr);
1700 static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1701 struct nfs_pgio_res *result)
1703 enum nfs_stat status;
1706 error = decode_nfsstat3(xdr, &status);
1707 if (unlikely(error))
1709 error = decode_wcc_data(xdr, result->fattr);
1710 if (unlikely(error))
1712 result->op_status = status;
1713 if (status != NFS3_OK)
1715 error = decode_write3resok(xdr, result);
1719 return nfs3_stat_to_errno(status);
1725 * struct CREATE3resok {
1727 * post_op_attr obj_attributes;
1731 * struct CREATE3resfail {
1735 * union CREATE3res switch (nfsstat3 status) {
1737 * CREATE3resok resok;
1739 * CREATE3resfail resfail;
1742 static int decode_create3resok(struct xdr_stream *xdr,
1743 struct nfs3_diropres *result)
1747 error = decode_post_op_fh3(xdr, result->fh);
1748 if (unlikely(error))
1750 error = decode_post_op_attr(xdr, result->fattr);
1751 if (unlikely(error))
1753 /* The server isn't required to return a file handle.
1754 * If it didn't, force the client to perform a LOOKUP
1755 * to determine the correct file handle and attribute
1756 * values for the new object. */
1757 if (result->fh->size == 0)
1758 result->fattr->valid = 0;
1759 error = decode_wcc_data(xdr, result->dir_attr);
1764 static int nfs3_xdr_dec_create3res(struct rpc_rqst *req,
1765 struct xdr_stream *xdr,
1766 struct nfs3_diropres *result)
1768 enum nfs_stat status;
1771 error = decode_nfsstat3(xdr, &status);
1772 if (unlikely(error))
1774 if (status != NFS3_OK)
1776 error = decode_create3resok(xdr, result);
1780 error = decode_wcc_data(xdr, result->dir_attr);
1781 if (unlikely(error))
1783 return nfs3_stat_to_errno(status);
1789 * struct REMOVE3resok {
1793 * struct REMOVE3resfail {
1797 * union REMOVE3res switch (nfsstat3 status) {
1799 * REMOVE3resok resok;
1801 * REMOVE3resfail resfail;
1804 static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req,
1805 struct xdr_stream *xdr,
1806 struct nfs_removeres *result)
1808 enum nfs_stat status;
1811 error = decode_nfsstat3(xdr, &status);
1812 if (unlikely(error))
1814 error = decode_wcc_data(xdr, result->dir_attr);
1815 if (unlikely(error))
1817 if (status != NFS3_OK)
1822 return nfs3_stat_to_errno(status);
1828 * struct RENAME3resok {
1829 * wcc_data fromdir_wcc;
1830 * wcc_data todir_wcc;
1833 * struct RENAME3resfail {
1834 * wcc_data fromdir_wcc;
1835 * wcc_data todir_wcc;
1838 * union RENAME3res switch (nfsstat3 status) {
1840 * RENAME3resok resok;
1842 * RENAME3resfail resfail;
1845 static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req,
1846 struct xdr_stream *xdr,
1847 struct nfs_renameres *result)
1849 enum nfs_stat status;
1852 error = decode_nfsstat3(xdr, &status);
1853 if (unlikely(error))
1855 error = decode_wcc_data(xdr, result->old_fattr);
1856 if (unlikely(error))
1858 error = decode_wcc_data(xdr, result->new_fattr);
1859 if (unlikely(error))
1861 if (status != NFS3_OK)
1866 return nfs3_stat_to_errno(status);
1872 * struct LINK3resok {
1873 * post_op_attr file_attributes;
1874 * wcc_data linkdir_wcc;
1877 * struct LINK3resfail {
1878 * post_op_attr file_attributes;
1879 * wcc_data linkdir_wcc;
1882 * union LINK3res switch (nfsstat3 status) {
1886 * LINK3resfail resfail;
1889 static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1890 struct nfs3_linkres *result)
1892 enum nfs_stat status;
1895 error = decode_nfsstat3(xdr, &status);
1896 if (unlikely(error))
1898 error = decode_post_op_attr(xdr, result->fattr);
1899 if (unlikely(error))
1901 error = decode_wcc_data(xdr, result->dir_attr);
1902 if (unlikely(error))
1904 if (status != NFS3_OK)
1909 return nfs3_stat_to_errno(status);
1913 * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in
1914 * the local page cache
1915 * @xdr: XDR stream where entry resides
1916 * @entry: buffer to fill in with entry data
1917 * @plus: boolean indicating whether this should be a readdirplus entry
1919 * Returns zero if successful, otherwise a negative errno value is
1922 * This function is not invoked during READDIR reply decoding, but
1923 * rather whenever an application invokes the getdents(2) system call
1924 * on a directory already in our cache.
1932 * fhandle3 filehandle;
1933 * post_op_attr3 attributes;
1934 * entry3 *nextentry;
1938 * struct entryplus3 {
1942 * post_op_attr name_attributes;
1943 * post_op_fh3 name_handle;
1944 * entryplus3 *nextentry;
1947 int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
1950 struct nfs_entry old = *entry;
1954 p = xdr_inline_decode(xdr, 4);
1955 if (unlikely(p == NULL))
1957 if (*p == xdr_zero) {
1958 p = xdr_inline_decode(xdr, 4);
1959 if (unlikely(p == NULL))
1967 error = decode_fileid3(xdr, &entry->ino);
1968 if (unlikely(error))
1971 error = decode_inline_filename3(xdr, &entry->name, &entry->len);
1972 if (unlikely(error))
1975 entry->prev_cookie = entry->cookie;
1976 error = decode_cookie3(xdr, &entry->cookie);
1977 if (unlikely(error))
1980 entry->d_type = DT_UNKNOWN;
1983 entry->fattr->valid = 0;
1984 error = decode_post_op_attr(xdr, entry->fattr);
1985 if (unlikely(error))
1987 if (entry->fattr->valid & NFS_ATTR_FATTR_V3)
1988 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
1990 /* In fact, a post_op_fh3: */
1991 p = xdr_inline_decode(xdr, 4);
1992 if (unlikely(p == NULL))
1994 if (*p != xdr_zero) {
1995 error = decode_nfs_fh3(xdr, entry->fh);
1996 if (unlikely(error)) {
1997 if (error == -E2BIG)
2002 zero_nfs_fh3(entry->fh);
2008 print_overflow_msg(__func__, xdr);
2011 dprintk("NFS: directory entry contains invalid file handle\n");
2017 * 3.3.16 READDIR3res
2024 * struct READDIR3resok {
2025 * post_op_attr dir_attributes;
2026 * cookieverf3 cookieverf;
2030 * struct READDIR3resfail {
2031 * post_op_attr dir_attributes;
2034 * union READDIR3res switch (nfsstat3 status) {
2036 * READDIR3resok resok;
2038 * READDIR3resfail resfail;
2041 * Read the directory contents into the page cache, but otherwise
2042 * don't touch them. The actual decoding is done by nfs3_decode_entry()
2043 * during subsequent nfs_readdir() calls.
2045 static int decode_dirlist3(struct xdr_stream *xdr)
2047 return xdr_read_pages(xdr, xdr->buf->page_len);
2050 static int decode_readdir3resok(struct xdr_stream *xdr,
2051 struct nfs3_readdirres *result)
2055 error = decode_post_op_attr(xdr, result->dir_attr);
2056 if (unlikely(error))
2058 /* XXX: do we need to check if result->verf != NULL ? */
2059 error = decode_cookieverf3(xdr, result->verf);
2060 if (unlikely(error))
2062 error = decode_dirlist3(xdr);
2067 static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req,
2068 struct xdr_stream *xdr,
2069 struct nfs3_readdirres *result)
2071 enum nfs_stat status;
2074 error = decode_nfsstat3(xdr, &status);
2075 if (unlikely(error))
2077 if (status != NFS3_OK)
2079 error = decode_readdir3resok(xdr, result);
2083 error = decode_post_op_attr(xdr, result->dir_attr);
2084 if (unlikely(error))
2086 return nfs3_stat_to_errno(status);
2092 * struct FSSTAT3resok {
2093 * post_op_attr obj_attributes;
2103 * struct FSSTAT3resfail {
2104 * post_op_attr obj_attributes;
2107 * union FSSTAT3res switch (nfsstat3 status) {
2109 * FSSTAT3resok resok;
2111 * FSSTAT3resfail resfail;
2114 static int decode_fsstat3resok(struct xdr_stream *xdr,
2115 struct nfs_fsstat *result)
2119 p = xdr_inline_decode(xdr, 8 * 6 + 4);
2120 if (unlikely(p == NULL))
2122 p = xdr_decode_size3(p, &result->tbytes);
2123 p = xdr_decode_size3(p, &result->fbytes);
2124 p = xdr_decode_size3(p, &result->abytes);
2125 p = xdr_decode_size3(p, &result->tfiles);
2126 p = xdr_decode_size3(p, &result->ffiles);
2127 xdr_decode_size3(p, &result->afiles);
2128 /* ignore invarsec */
2131 print_overflow_msg(__func__, xdr);
2135 static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req,
2136 struct xdr_stream *xdr,
2137 struct nfs_fsstat *result)
2139 enum nfs_stat status;
2142 error = decode_nfsstat3(xdr, &status);
2143 if (unlikely(error))
2145 error = decode_post_op_attr(xdr, result->fattr);
2146 if (unlikely(error))
2148 if (status != NFS3_OK)
2150 error = decode_fsstat3resok(xdr, result);
2154 return nfs3_stat_to_errno(status);
2160 * struct FSINFO3resok {
2161 * post_op_attr obj_attributes;
2169 * size3 maxfilesize;
2170 * nfstime3 time_delta;
2171 * uint32 properties;
2174 * struct FSINFO3resfail {
2175 * post_op_attr obj_attributes;
2178 * union FSINFO3res switch (nfsstat3 status) {
2180 * FSINFO3resok resok;
2182 * FSINFO3resfail resfail;
2185 static int decode_fsinfo3resok(struct xdr_stream *xdr,
2186 struct nfs_fsinfo *result)
2190 p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4);
2191 if (unlikely(p == NULL))
2193 result->rtmax = be32_to_cpup(p++);
2194 result->rtpref = be32_to_cpup(p++);
2195 result->rtmult = be32_to_cpup(p++);
2196 result->wtmax = be32_to_cpup(p++);
2197 result->wtpref = be32_to_cpup(p++);
2198 result->wtmult = be32_to_cpup(p++);
2199 result->dtpref = be32_to_cpup(p++);
2200 p = xdr_decode_size3(p, &result->maxfilesize);
2201 xdr_decode_nfstime3(p, &result->time_delta);
2203 /* ignore properties */
2204 result->lease_time = 0;
2207 print_overflow_msg(__func__, xdr);
2211 static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req,
2212 struct xdr_stream *xdr,
2213 struct nfs_fsinfo *result)
2215 enum nfs_stat status;
2218 error = decode_nfsstat3(xdr, &status);
2219 if (unlikely(error))
2221 error = decode_post_op_attr(xdr, result->fattr);
2222 if (unlikely(error))
2224 if (status != NFS3_OK)
2226 error = decode_fsinfo3resok(xdr, result);
2230 return nfs3_stat_to_errno(status);
2234 * 3.3.20 PATHCONF3res
2236 * struct PATHCONF3resok {
2237 * post_op_attr obj_attributes;
2241 * bool chown_restricted;
2242 * bool case_insensitive;
2243 * bool case_preserving;
2246 * struct PATHCONF3resfail {
2247 * post_op_attr obj_attributes;
2250 * union PATHCONF3res switch (nfsstat3 status) {
2252 * PATHCONF3resok resok;
2254 * PATHCONF3resfail resfail;
2257 static int decode_pathconf3resok(struct xdr_stream *xdr,
2258 struct nfs_pathconf *result)
2262 p = xdr_inline_decode(xdr, 4 * 6);
2263 if (unlikely(p == NULL))
2265 result->max_link = be32_to_cpup(p++);
2266 result->max_namelen = be32_to_cpup(p);
2267 /* ignore remaining fields */
2270 print_overflow_msg(__func__, xdr);
2274 static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req,
2275 struct xdr_stream *xdr,
2276 struct nfs_pathconf *result)
2278 enum nfs_stat status;
2281 error = decode_nfsstat3(xdr, &status);
2282 if (unlikely(error))
2284 error = decode_post_op_attr(xdr, result->fattr);
2285 if (unlikely(error))
2287 if (status != NFS3_OK)
2289 error = decode_pathconf3resok(xdr, result);
2293 return nfs3_stat_to_errno(status);
2299 * struct COMMIT3resok {
2300 * wcc_data file_wcc;
2304 * struct COMMIT3resfail {
2305 * wcc_data file_wcc;
2308 * union COMMIT3res switch (nfsstat3 status) {
2310 * COMMIT3resok resok;
2312 * COMMIT3resfail resfail;
2315 static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req,
2316 struct xdr_stream *xdr,
2317 struct nfs_commitres *result)
2319 enum nfs_stat status;
2322 error = decode_nfsstat3(xdr, &status);
2323 if (unlikely(error))
2325 error = decode_wcc_data(xdr, result->fattr);
2326 if (unlikely(error))
2328 result->op_status = status;
2329 if (status != NFS3_OK)
2331 error = decode_writeverf3(xdr, &result->verf->verifier);
2335 return nfs3_stat_to_errno(status);
2338 #ifdef CONFIG_NFS_V3_ACL
2340 static inline int decode_getacl3resok(struct xdr_stream *xdr,
2341 struct nfs3_getaclres *result)
2343 struct posix_acl **acl;
2344 unsigned int *aclcnt;
2348 error = decode_post_op_attr(xdr, result->fattr);
2349 if (unlikely(error))
2351 error = decode_uint32(xdr, &result->mask);
2352 if (unlikely(error))
2355 if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
2358 hdrlen = xdr_stream_pos(xdr);
2361 if (result->mask & NFS_ACL)
2362 acl = &result->acl_access;
2364 if (result->mask & NFS_ACLCNT)
2365 aclcnt = &result->acl_access_count;
2366 error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl);
2367 if (unlikely(error <= 0))
2371 if (result->mask & NFS_DFACL)
2372 acl = &result->acl_default;
2374 if (result->mask & NFS_DFACLCNT)
2375 aclcnt = &result->acl_default_count;
2376 error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl);
2377 if (unlikely(error <= 0))
2384 static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req,
2385 struct xdr_stream *xdr,
2386 struct nfs3_getaclres *result)
2388 enum nfs_stat status;
2391 error = decode_nfsstat3(xdr, &status);
2392 if (unlikely(error))
2394 if (status != NFS3_OK)
2396 error = decode_getacl3resok(xdr, result);
2400 return nfs3_stat_to_errno(status);
2403 static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req,
2404 struct xdr_stream *xdr,
2405 struct nfs_fattr *result)
2407 enum nfs_stat status;
2410 error = decode_nfsstat3(xdr, &status);
2411 if (unlikely(error))
2413 if (status != NFS3_OK)
2415 error = decode_post_op_attr(xdr, result);
2419 return nfs3_stat_to_errno(status);
2422 #endif /* CONFIG_NFS_V3_ACL */
2426 * We need to translate between nfs status return values and
2427 * the local errno values which may not be the same.
2429 static const struct {
2434 { NFSERR_PERM, -EPERM },
2435 { NFSERR_NOENT, -ENOENT },
2436 { NFSERR_IO, -errno_NFSERR_IO},
2437 { NFSERR_NXIO, -ENXIO },
2438 /* { NFSERR_EAGAIN, -EAGAIN }, */
2439 { NFSERR_ACCES, -EACCES },
2440 { NFSERR_EXIST, -EEXIST },
2441 { NFSERR_XDEV, -EXDEV },
2442 { NFSERR_NODEV, -ENODEV },
2443 { NFSERR_NOTDIR, -ENOTDIR },
2444 { NFSERR_ISDIR, -EISDIR },
2445 { NFSERR_INVAL, -EINVAL },
2446 { NFSERR_FBIG, -EFBIG },
2447 { NFSERR_NOSPC, -ENOSPC },
2448 { NFSERR_ROFS, -EROFS },
2449 { NFSERR_MLINK, -EMLINK },
2450 { NFSERR_NAMETOOLONG, -ENAMETOOLONG },
2451 { NFSERR_NOTEMPTY, -ENOTEMPTY },
2452 { NFSERR_DQUOT, -EDQUOT },
2453 { NFSERR_STALE, -ESTALE },
2454 { NFSERR_REMOTE, -EREMOTE },
2456 { NFSERR_WFLUSH, -EWFLUSH },
2458 { NFSERR_BADHANDLE, -EBADHANDLE },
2459 { NFSERR_NOT_SYNC, -ENOTSYNC },
2460 { NFSERR_BAD_COOKIE, -EBADCOOKIE },
2461 { NFSERR_NOTSUPP, -ENOTSUPP },
2462 { NFSERR_TOOSMALL, -ETOOSMALL },
2463 { NFSERR_SERVERFAULT, -EREMOTEIO },
2464 { NFSERR_BADTYPE, -EBADTYPE },
2465 { NFSERR_JUKEBOX, -EJUKEBOX },
2470 * nfs3_stat_to_errno - convert an NFS status code to a local errno
2471 * @status: NFS status code to convert
2473 * Returns a local errno value, or -EIO if the NFS status code is
2474 * not recognized. This function is used jointly by NFSv2 and NFSv3.
2476 static int nfs3_stat_to_errno(enum nfs_stat status)
2480 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
2481 if (nfs_errtbl[i].stat == (int)status)
2482 return nfs_errtbl[i].errno;
2484 dprintk("NFS: Unrecognized nfs status value: %u\n", status);
2485 return nfs_errtbl[i].errno;
2489 #define PROC(proc, argtype, restype, timer) \
2490 [NFS3PROC_##proc] = { \
2491 .p_proc = NFS3PROC_##proc, \
2492 .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \
2493 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \
2494 .p_arglen = NFS3_##argtype##args_sz, \
2495 .p_replen = NFS3_##restype##res_sz, \
2497 .p_statidx = NFS3PROC_##proc, \
2501 struct rpc_procinfo nfs3_procedures[] = {
2502 PROC(GETATTR, getattr, getattr, 1),
2503 PROC(SETATTR, setattr, setattr, 0),
2504 PROC(LOOKUP, lookup, lookup, 2),
2505 PROC(ACCESS, access, access, 1),
2506 PROC(READLINK, readlink, readlink, 3),
2507 PROC(READ, read, read, 3),
2508 PROC(WRITE, write, write, 4),
2509 PROC(CREATE, create, create, 0),
2510 PROC(MKDIR, mkdir, create, 0),
2511 PROC(SYMLINK, symlink, create, 0),
2512 PROC(MKNOD, mknod, create, 0),
2513 PROC(REMOVE, remove, remove, 0),
2514 PROC(RMDIR, lookup, setattr, 0),
2515 PROC(RENAME, rename, rename, 0),
2516 PROC(LINK, link, link, 0),
2517 PROC(READDIR, readdir, readdir, 3),
2518 PROC(READDIRPLUS, readdirplus, readdir, 3),
2519 PROC(FSSTAT, getattr, fsstat, 0),
2520 PROC(FSINFO, getattr, fsinfo, 0),
2521 PROC(PATHCONF, getattr, pathconf, 0),
2522 PROC(COMMIT, commit, commit, 5),
2525 const struct rpc_version nfs_version3 = {
2527 .nrprocs = ARRAY_SIZE(nfs3_procedures),
2528 .procs = nfs3_procedures
2531 #ifdef CONFIG_NFS_V3_ACL
2532 static struct rpc_procinfo nfs3_acl_procedures[] = {
2533 [ACLPROC3_GETACL] = {
2534 .p_proc = ACLPROC3_GETACL,
2535 .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args,
2536 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res,
2537 .p_arglen = ACL3_getaclargs_sz,
2538 .p_replen = ACL3_getaclres_sz,
2542 [ACLPROC3_SETACL] = {
2543 .p_proc = ACLPROC3_SETACL,
2544 .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args,
2545 .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res,
2546 .p_arglen = ACL3_setaclargs_sz,
2547 .p_replen = ACL3_setaclres_sz,
2553 const struct rpc_version nfsacl_version3 = {
2555 .nrprocs = sizeof(nfs3_acl_procedures)/
2556 sizeof(nfs3_acl_procedures[0]),
2557 .procs = nfs3_acl_procedures,
2559 #endif /* CONFIG_NFS_V3_ACL */