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fs/nfs/nfs3xdr.c
54.9 KB
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/* * linux/fs/nfs/nfs3xdr.c * * XDR functions to encode/decode NFSv3 RPC arguments and results. * * Copyright (C) 1996, 1997 Olaf Kirch */ #include <linux/param.h> #include <linux/time.h> #include <linux/mm.h> |
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#include <linux/errno.h> #include <linux/string.h> #include <linux/in.h> #include <linux/pagemap.h> #include <linux/proc_fs.h> #include <linux/kdev_t.h> #include <linux/sunrpc/clnt.h> #include <linux/nfs.h> #include <linux/nfs3.h> #include <linux/nfs_fs.h> |
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#include <linux/nfsacl.h> |
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#include "internal.h" |
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#define NFSDBG_FACILITY NFSDBG_XDR /* Mapping from NFS error code to "errno" error code. */ #define errno_NFSERR_IO EIO |
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/* * Declare the space requirements for NFS arguments and replies as * number of 32bit-words */ #define NFS3_fhandle_sz (1+16) #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ #define NFS3_sattr_sz (15) #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) #define NFS3_fattr_sz (21) |
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#define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2) |
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#define NFS3_wcc_attr_sz (6) |
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#define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) |
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#define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) |
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#define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
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#define NFS3_getattrargs_sz (NFS3_fh_sz) #define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) #define NFS3_lookupargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
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#define NFS3_accessargs_sz (NFS3_fh_sz+1) #define NFS3_readlinkargs_sz (NFS3_fh_sz) #define NFS3_readargs_sz (NFS3_fh_sz+3) #define NFS3_writeargs_sz (NFS3_fh_sz+5) #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) |
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#define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) |
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#define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) |
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#define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
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#define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) |
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#define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3) #define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4) |
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#define NFS3_commitargs_sz (NFS3_fh_sz+3) |
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#define NFS3_getattrres_sz (1+NFS3_fattr_sz) #define NFS3_setattrres_sz (1+NFS3_wcc_data_sz) #define NFS3_removeres_sz (NFS3_setattrres_sz) |
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#define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) |
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#define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
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#define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) |
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#define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) |
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static int nfs3_stat_to_errno(enum nfs_stat); |
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/* * Map file type to S_IFMT bits */ |
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static const umode_t nfs_type2fmt[] = { [NF3BAD] = 0, [NF3REG] = S_IFREG, [NF3DIR] = S_IFDIR, [NF3BLK] = S_IFBLK, [NF3CHR] = S_IFCHR, [NF3LNK] = S_IFLNK, [NF3SOCK] = S_IFSOCK, [NF3FIFO] = S_IFIFO, |
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}; /* |
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* While encoding arguments, set up the reply buffer in advance to * receive reply data directly into the page cache. */ static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages, unsigned int base, unsigned int len, unsigned int bufsize) { struct rpc_auth *auth = req->rq_cred->cr_auth; unsigned int replen; replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize; xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len); } |
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/* * Handle decode buffer overflows out-of-line. */ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) { dprintk("NFS: %s prematurely hit the end of our receive buffer. " "Remaining buffer length is %tu words. ", func, xdr->end - xdr->p); } |
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/* |
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* Encode/decode NFSv3 basic data types * * Basic NFSv3 data types are defined in section 2.5 of RFC 1813: * "NFS Version 3 Protocol Specification". * * Not all basic data types have their own encoding and decoding * functions. For run-time efficiency, some data types are encoded * or decoded inline. */ static void encode_uint32(struct xdr_stream *xdr, u32 value) { __be32 *p = xdr_reserve_space(xdr, 4); *p = cpu_to_be32(value); } |
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static int decode_uint32(struct xdr_stream *xdr, u32 *value) { __be32 *p; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; *value = be32_to_cpup(p); return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } static int decode_uint64(struct xdr_stream *xdr, u64 *value) { __be32 *p; p = xdr_inline_decode(xdr, 8); if (unlikely(p == NULL)) goto out_overflow; xdr_decode_hyper(p, value); return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } /* * fileid3 * * typedef uint64 fileid3; */ |
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static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid) { return xdr_decode_hyper(p, fileid); } |
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static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid) { return decode_uint64(xdr, fileid); } |
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/* * filename3 * * typedef string filename3<>; */ static void encode_filename3(struct xdr_stream *xdr, const char *name, u32 length) { __be32 *p; |
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WARN_ON_ONCE(length > NFS3_MAXNAMLEN); |
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p = xdr_reserve_space(xdr, 4 + length); xdr_encode_opaque(p, name, length); } |
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static int decode_inline_filename3(struct xdr_stream *xdr, const char **name, u32 *length) { __be32 *p; u32 count; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; count = be32_to_cpup(p); if (count > NFS3_MAXNAMLEN) goto out_nametoolong; p = xdr_inline_decode(xdr, count); if (unlikely(p == NULL)) goto out_overflow; *name = (const char *)p; *length = count; return 0; out_nametoolong: dprintk("NFS: returned filename too long: %u ", count); return -ENAMETOOLONG; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } |
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/* * nfspath3 * * typedef string nfspath3<>; */ static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages, const u32 length) { |
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encode_uint32(xdr, length); xdr_write_pages(xdr, pages, 0, length); } |
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static int decode_nfspath3(struct xdr_stream *xdr) { u32 recvd, count; |
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__be32 *p; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; count = be32_to_cpup(p); if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN)) goto out_nametoolong; |
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recvd = xdr_read_pages(xdr, count); |
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if (unlikely(count > recvd)) goto out_cheating; |
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xdr_terminate_string(xdr->buf, count); return 0; out_nametoolong: dprintk("NFS: returned pathname too long: %u ", count); return -ENAMETOOLONG; out_cheating: dprintk("NFS: server cheating in pathname result: " "count %u > recvd %u ", count, recvd); return -EIO; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } |
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/* * cookie3 * * typedef uint64 cookie3 */ static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie) { return xdr_encode_hyper(p, cookie); } |
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static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie) { return decode_uint64(xdr, cookie); } |
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/* * cookieverf3 * * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE]; */ static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier) { memcpy(p, verifier, NFS3_COOKIEVERFSIZE); return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE); } |
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static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier) { __be32 *p; p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE); if (unlikely(p == NULL)) goto out_overflow; memcpy(verifier, p, NFS3_COOKIEVERFSIZE); return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } |
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/* * createverf3 * * typedef opaque createverf3[NFS3_CREATEVERFSIZE]; */ static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier) { __be32 *p; p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE); memcpy(p, verifier, NFS3_CREATEVERFSIZE); } |
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static int decode_writeverf3(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) |
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{ __be32 *p; p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE); if (unlikely(p == NULL)) goto out_overflow; |
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memcpy(verifier->data, p, NFS3_WRITEVERFSIZE); |
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return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } /* * size3 * * typedef uint64 size3; */ static __be32 *xdr_decode_size3(__be32 *p, u64 *size) { return xdr_decode_hyper(p, size); } /* * nfsstat3 * * enum nfsstat3 { * NFS3_OK = 0, * ... * } */ #define NFS3_OK NFS_OK static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status) { __be32 *p; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; *status = be32_to_cpup(p); return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } |
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/* * ftype3 * * enum ftype3 { * NF3REG = 1, * NF3DIR = 2, * NF3BLK = 3, * NF3CHR = 4, * NF3LNK = 5, * NF3SOCK = 6, * NF3FIFO = 7 * }; */ static void encode_ftype3(struct xdr_stream *xdr, const u32 type) { |
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encode_uint32(xdr, type); } |
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static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode) { u32 type; type = be32_to_cpup(p++); if (type > NF3FIFO) type = NF3NON; *mode = nfs_type2fmt[type]; return p; } |
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/* * specdata3 * * struct specdata3 { * uint32 specdata1; * uint32 specdata2; * }; */ static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev) { __be32 *p; p = xdr_reserve_space(xdr, 8); *p++ = cpu_to_be32(MAJOR(rdev)); *p = cpu_to_be32(MINOR(rdev)); } |
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static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev) { unsigned int major, minor; major = be32_to_cpup(p++); minor = be32_to_cpup(p++); *rdev = MKDEV(major, minor); if (MAJOR(*rdev) != major || MINOR(*rdev) != minor) *rdev = 0; return p; } |
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/* * nfs_fh3 * * struct nfs_fh3 { * opaque data<NFS3_FHSIZE>; * }; */ static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh) { __be32 *p; |
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WARN_ON_ONCE(fh->size > NFS3_FHSIZE); |
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p = xdr_reserve_space(xdr, 4 + fh->size); xdr_encode_opaque(p, fh->data, fh->size); } |
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static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) { u32 length; __be32 *p; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; length = be32_to_cpup(p++); if (unlikely(length > NFS3_FHSIZE)) goto out_toobig; p = xdr_inline_decode(xdr, length); if (unlikely(p == NULL)) goto out_overflow; fh->size = length; memcpy(fh->data, p, length); return 0; out_toobig: dprintk("NFS: file handle size (%u) too big ", length); return -E2BIG; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } static void zero_nfs_fh3(struct nfs_fh *fh) { memset(fh, 0, sizeof(*fh)); } |
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/* |
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* nfstime3 * * struct nfstime3 { * uint32 seconds; * uint32 nseconds; * }; */ static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep) { *p++ = cpu_to_be32(timep->tv_sec); *p++ = cpu_to_be32(timep->tv_nsec); return p; } |
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static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep) { timep->tv_sec = be32_to_cpup(p++); timep->tv_nsec = be32_to_cpup(p++); return p; } |
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/* |
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* sattr3 * * enum time_how { * DONT_CHANGE = 0, * SET_TO_SERVER_TIME = 1, * SET_TO_CLIENT_TIME = 2 * }; * * union set_mode3 switch (bool set_it) { * case TRUE: * mode3 mode; * default: * void; * }; * * union set_uid3 switch (bool set_it) { * case TRUE: * uid3 uid; * default: * void; * }; * * union set_gid3 switch (bool set_it) { * case TRUE: * gid3 gid; * default: * void; * }; * * union set_size3 switch (bool set_it) { * case TRUE: * size3 size; * default: * void; * }; * * union set_atime switch (time_how set_it) { * case SET_TO_CLIENT_TIME: * nfstime3 atime; * default: * void; * }; * * union set_mtime switch (time_how set_it) { * case SET_TO_CLIENT_TIME: * nfstime3 mtime; * default: * void; * }; * * struct sattr3 { * set_mode3 mode; * set_uid3 uid; * set_gid3 gid; * set_size3 size; * set_atime atime; * set_mtime mtime; * }; */ static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr) { u32 nbytes; __be32 *p; /* * In order to make only a single xdr_reserve_space() call, * pre-compute the total number of bytes to be reserved. * Six boolean values, one for each set_foo field, are always * present in the encoded result, so start there. */ nbytes = 6 * 4; if (attr->ia_valid & ATTR_MODE) nbytes += 4; if (attr->ia_valid & ATTR_UID) nbytes += 4; if (attr->ia_valid & ATTR_GID) nbytes += 4; if (attr->ia_valid & ATTR_SIZE) nbytes += 8; if (attr->ia_valid & ATTR_ATIME_SET) nbytes += 8; if (attr->ia_valid & ATTR_MTIME_SET) nbytes += 8; p = xdr_reserve_space(xdr, nbytes); |
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if (attr->ia_valid & ATTR_MODE) { *p++ = xdr_one; *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO); } else *p++ = xdr_zero; if (attr->ia_valid & ATTR_UID) { *p++ = xdr_one; |
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*p++ = cpu_to_be32(from_kuid(&init_user_ns, attr->ia_uid)); |
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} else *p++ = xdr_zero; if (attr->ia_valid & ATTR_GID) { *p++ = xdr_one; |
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*p++ = cpu_to_be32(from_kgid(&init_user_ns, attr->ia_gid)); |
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} else *p++ = xdr_zero; if (attr->ia_valid & ATTR_SIZE) { *p++ = xdr_one; p = xdr_encode_hyper(p, (u64)attr->ia_size); } else *p++ = xdr_zero; if (attr->ia_valid & ATTR_ATIME_SET) { *p++ = xdr_two; p = xdr_encode_nfstime3(p, &attr->ia_atime); } else if (attr->ia_valid & ATTR_ATIME) { *p++ = xdr_one; } else *p++ = xdr_zero; if (attr->ia_valid & ATTR_MTIME_SET) { *p++ = xdr_two; xdr_encode_nfstime3(p, &attr->ia_mtime); } else if (attr->ia_valid & ATTR_MTIME) { *p = xdr_one; } else *p = xdr_zero; |
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} /* |
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* fattr3 * * struct fattr3 { * ftype3 type; * mode3 mode; * uint32 nlink; * uid3 uid; * gid3 gid; * size3 size; * size3 used; * specdata3 rdev; * uint64 fsid; * fileid3 fileid; * nfstime3 atime; * nfstime3 mtime; * nfstime3 ctime; * }; */ static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr) { |
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umode_t fmode; |
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__be32 *p; p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2); if (unlikely(p == NULL)) goto out_overflow; |
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p = xdr_decode_ftype3(p, &fmode); fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode; fattr->nlink = be32_to_cpup(p++); |
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fattr->uid = make_kuid(&init_user_ns, be32_to_cpup(p++)); if (!uid_valid(fattr->uid)) goto out_uid; fattr->gid = make_kgid(&init_user_ns, be32_to_cpup(p++)); if (!gid_valid(fattr->gid)) goto out_gid; |
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p = xdr_decode_size3(p, &fattr->size); p = xdr_decode_size3(p, &fattr->du.nfs3.used); p = xdr_decode_specdata3(p, &fattr->rdev); p = xdr_decode_hyper(p, &fattr->fsid.major); fattr->fsid.minor = 0; p = xdr_decode_fileid3(p, &fattr->fileid); p = xdr_decode_nfstime3(p, &fattr->atime); p = xdr_decode_nfstime3(p, &fattr->mtime); xdr_decode_nfstime3(p, &fattr->ctime); |
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fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime); |
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653 654 |
fattr->valid |= NFS_ATTR_FATTR_V3; |
e4f932340
|
655 |
return 0; |
57a38dae2
|
656 657 658 659 660 661 662 663 |
out_uid: dprintk("NFS: returned invalid uid "); return -EINVAL; out_gid: dprintk("NFS: returned invalid gid "); return -EINVAL; |
e4f932340
|
664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 |
out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } /* * post_op_attr * * union post_op_attr switch (bool attributes_follow) { * case TRUE: * fattr3 attributes; * case FALSE: * void; * }; */ static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) { __be32 *p; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; if (*p != xdr_zero) return decode_fattr3(xdr, fattr); return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } /* * wcc_attr * struct wcc_attr { * size3 size; * nfstime3 mtime; * nfstime3 ctime; * }; */ static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) { __be32 *p; p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2); if (unlikely(p == NULL)) goto out_overflow; |
f60487093
|
709 710 |
fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
3a1556e86
|
711 |
| NFS_ATTR_FATTR_PRECHANGE |
f60487093
|
712 713 714 715 716 717 |
| NFS_ATTR_FATTR_PREMTIME | NFS_ATTR_FATTR_PRECTIME; p = xdr_decode_size3(p, &fattr->pre_size); p = xdr_decode_nfstime3(p, &fattr->pre_mtime); xdr_decode_nfstime3(p, &fattr->pre_ctime); |
3a1556e86
|
718 |
fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime); |
f60487093
|
719 |
|
e4f932340
|
720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 |
return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } /* * pre_op_attr * union pre_op_attr switch (bool attributes_follow) { * case TRUE: * wcc_attr attributes; * case FALSE: * void; * }; * * wcc_data * * struct wcc_data { * pre_op_attr before; * post_op_attr after; * }; */ static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) { __be32 *p; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; if (*p != xdr_zero) return decode_wcc_attr(xdr, fattr); return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr) { int error; error = decode_pre_op_attr(xdr, fattr); if (unlikely(error)) goto out; error = decode_post_op_attr(xdr, fattr); out: return error; } /* * post_op_fh3 * * union post_op_fh3 switch (bool handle_follows) { * case TRUE: * nfs_fh3 handle; * case FALSE: * void; * }; */ static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) { __be32 *p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; if (*p != xdr_zero) return decode_nfs_fh3(xdr, fh); zero_nfs_fh3(fh); return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } /* |
d9c407b13
|
794 795 796 797 798 799 800 801 802 803 804 805 806 |
* diropargs3 * * struct diropargs3 { * nfs_fh3 dir; * filename3 name; * }; */ static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, const char *name, u32 length) { encode_nfs_fh3(xdr, fh); encode_filename3(xdr, name, length); } |
1da177e4c
|
807 |
/* |
499ff710b
|
808 809 810 811 |
* NFSv3 XDR encode functions * * NFSv3 argument types are defined in section 3.3 of RFC 1813: * "NFS Version 3 Protocol Specification". |
1da177e4c
|
812 813 814 |
*/ /* |
d9c407b13
|
815 816 817 818 819 820 |
* 3.3.1 GETATTR3args * * struct GETATTR3args { * nfs_fh3 object; * }; */ |
9f06c719f
|
821 822 823 |
static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs_fh *fh) |
d9c407b13
|
824 |
{ |
9f06c719f
|
825 |
encode_nfs_fh3(xdr, fh); |
d9c407b13
|
826 827 828 |
} /* |
d9c407b13
|
829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 |
* 3.3.2 SETATTR3args * * union sattrguard3 switch (bool check) { * case TRUE: * nfstime3 obj_ctime; * case FALSE: * void; * }; * * struct SETATTR3args { * nfs_fh3 object; * sattr3 new_attributes; * sattrguard3 guard; * }; */ static void encode_sattrguard3(struct xdr_stream *xdr, const struct nfs3_sattrargs *args) { __be32 *p; if (args->guard) { p = xdr_reserve_space(xdr, 4 + 8); *p++ = xdr_one; |
9d5a64343
|
852 |
xdr_encode_nfstime3(p, &args->guardtime); |
d9c407b13
|
853 854 855 856 857 |
} else { p = xdr_reserve_space(xdr, 4); *p = xdr_zero; } } |
9f06c719f
|
858 859 860 |
static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_sattrargs *args) |
d9c407b13
|
861 |
{ |
9f06c719f
|
862 863 864 |
encode_nfs_fh3(xdr, args->fh); encode_sattr3(xdr, args->sattr); encode_sattrguard3(xdr, args); |
d9c407b13
|
865 866 867 |
} /* |
d9c407b13
|
868 869 870 871 872 873 |
* 3.3.3 LOOKUP3args * * struct LOOKUP3args { * diropargs3 what; * }; */ |
9f06c719f
|
874 875 876 |
static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_diropargs *args) |
d9c407b13
|
877 |
{ |
9f06c719f
|
878 |
encode_diropargs3(xdr, args->fh, args->name, args->len); |
d9c407b13
|
879 880 881 |
} /* |
d9c407b13
|
882 883 884 885 886 887 888 889 890 891 892 893 894 |
* 3.3.4 ACCESS3args * * struct ACCESS3args { * nfs_fh3 object; * uint32 access; * }; */ static void encode_access3args(struct xdr_stream *xdr, const struct nfs3_accessargs *args) { encode_nfs_fh3(xdr, args->fh); encode_uint32(xdr, args->access); } |
9f06c719f
|
895 896 897 |
static void nfs3_xdr_enc_access3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_accessargs *args) |
d9c407b13
|
898 |
{ |
9f06c719f
|
899 |
encode_access3args(xdr, args); |
d9c407b13
|
900 901 902 903 904 905 906 907 908 |
} /* * 3.3.5 READLINK3args * * struct READLINK3args { * nfs_fh3 symlink; * }; */ |
9f06c719f
|
909 910 911 |
static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_readlinkargs *args) |
d9c407b13
|
912 |
{ |
9f06c719f
|
913 |
encode_nfs_fh3(xdr, args->fh); |
d9c407b13
|
914 915 |
prepare_reply_buffer(req, args->pages, args->pgbase, args->pglen, NFS3_readlinkres_sz); |
d9c407b13
|
916 917 918 |
} /* |
d9c407b13
|
919 920 921 922 923 924 925 926 927 |
* 3.3.6 READ3args * * struct READ3args { * nfs_fh3 file; * offset3 offset; * count3 count; * }; */ static void encode_read3args(struct xdr_stream *xdr, |
3c6b899c4
|
928 |
const struct nfs_pgio_args *args) |
d9c407b13
|
929 930 931 932 933 934 935 936 937 |
{ __be32 *p; encode_nfs_fh3(xdr, args->fh); p = xdr_reserve_space(xdr, 8 + 4); p = xdr_encode_hyper(p, args->offset); *p = cpu_to_be32(args->count); } |
9f06c719f
|
938 939 |
static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, struct xdr_stream *xdr, |
3c6b899c4
|
940 |
const struct nfs_pgio_args *args) |
d9c407b13
|
941 |
{ |
9f06c719f
|
942 |
encode_read3args(xdr, args); |
d9c407b13
|
943 944 945 |
prepare_reply_buffer(req, args->pages, args->pgbase, args->count, NFS3_readres_sz); req->rq_rcv_buf.flags |= XDRBUF_READ; |
d9c407b13
|
946 947 948 |
} /* |
d9c407b13
|
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 |
* 3.3.7 WRITE3args * * enum stable_how { * UNSTABLE = 0, * DATA_SYNC = 1, * FILE_SYNC = 2 * }; * * struct WRITE3args { * nfs_fh3 file; * offset3 offset; * count3 count; * stable_how stable; * opaque data<>; * }; */ static void encode_write3args(struct xdr_stream *xdr, |
3c6b899c4
|
966 |
const struct nfs_pgio_args *args) |
d9c407b13
|
967 968 969 970 971 972 973 974 |
{ __be32 *p; encode_nfs_fh3(xdr, args->fh); p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4); p = xdr_encode_hyper(p, args->offset); *p++ = cpu_to_be32(args->count); |
d9c407b13
|
975 |
*p++ = cpu_to_be32(args->stable); |
d9c407b13
|
976 977 978 |
*p = cpu_to_be32(args->count); xdr_write_pages(xdr, args->pages, args->pgbase, args->count); } |
9f06c719f
|
979 980 |
static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, struct xdr_stream *xdr, |
3c6b899c4
|
981 |
const struct nfs_pgio_args *args) |
d9c407b13
|
982 |
{ |
9f06c719f
|
983 984 |
encode_write3args(xdr, args); xdr->buf->flags |= XDRBUF_WRITE; |
d9c407b13
|
985 986 987 |
} /* |
d9c407b13
|
988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 |
* 3.3.8 CREATE3args * * enum createmode3 { * UNCHECKED = 0, * GUARDED = 1, * EXCLUSIVE = 2 * }; * * union createhow3 switch (createmode3 mode) { * case UNCHECKED: * case GUARDED: * sattr3 obj_attributes; * case EXCLUSIVE: * createverf3 verf; * }; * * struct CREATE3args { * diropargs3 where; * createhow3 how; * }; */ static void encode_createhow3(struct xdr_stream *xdr, const struct nfs3_createargs *args) { encode_uint32(xdr, args->createmode); switch (args->createmode) { case NFS3_CREATE_UNCHECKED: case NFS3_CREATE_GUARDED: encode_sattr3(xdr, args->sattr); break; case NFS3_CREATE_EXCLUSIVE: encode_createverf3(xdr, args->verifier); break; default: BUG(); } } |
9f06c719f
|
1025 1026 1027 |
static void nfs3_xdr_enc_create3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_createargs *args) |
d9c407b13
|
1028 |
{ |
9f06c719f
|
1029 1030 |
encode_diropargs3(xdr, args->fh, args->name, args->len); encode_createhow3(xdr, args); |
d9c407b13
|
1031 1032 1033 |
} /* |
d9c407b13
|
1034 1035 1036 1037 1038 1039 1040 |
* 3.3.9 MKDIR3args * * struct MKDIR3args { * diropargs3 where; * sattr3 attributes; * }; */ |
9f06c719f
|
1041 1042 1043 |
static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_mkdirargs *args) |
d9c407b13
|
1044 |
{ |
9f06c719f
|
1045 1046 |
encode_diropargs3(xdr, args->fh, args->name, args->len); encode_sattr3(xdr, args->sattr); |
d9c407b13
|
1047 1048 1049 |
} /* |
d9c407b13
|
1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 |
* 3.3.10 SYMLINK3args * * struct symlinkdata3 { * sattr3 symlink_attributes; * nfspath3 symlink_data; * }; * * struct SYMLINK3args { * diropargs3 where; * symlinkdata3 symlink; * }; */ static void encode_symlinkdata3(struct xdr_stream *xdr, const struct nfs3_symlinkargs *args) { encode_sattr3(xdr, args->sattr); encode_nfspath3(xdr, args->pages, args->pathlen); } |
9f06c719f
|
1068 1069 1070 |
static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_symlinkargs *args) |
d9c407b13
|
1071 |
{ |
9f06c719f
|
1072 1073 |
encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); encode_symlinkdata3(xdr, args); |
2fcc213a1
|
1074 |
xdr->buf->flags |= XDRBUF_WRITE; |
d9c407b13
|
1075 1076 1077 |
} /* |
d9c407b13
|
1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 |
* 3.3.11 MKNOD3args * * struct devicedata3 { * sattr3 dev_attributes; * specdata3 spec; * }; * * union mknoddata3 switch (ftype3 type) { * case NF3CHR: * case NF3BLK: * devicedata3 device; * case NF3SOCK: * case NF3FIFO: * sattr3 pipe_attributes; * default: * void; * }; * * struct MKNOD3args { * diropargs3 where; * mknoddata3 what; * }; */ static void encode_devicedata3(struct xdr_stream *xdr, const struct nfs3_mknodargs *args) { encode_sattr3(xdr, args->sattr); encode_specdata3(xdr, args->rdev); } static void encode_mknoddata3(struct xdr_stream *xdr, const struct nfs3_mknodargs *args) { encode_ftype3(xdr, args->type); switch (args->type) { case NF3CHR: case NF3BLK: encode_devicedata3(xdr, args); break; case NF3SOCK: case NF3FIFO: encode_sattr3(xdr, args->sattr); break; case NF3REG: case NF3DIR: break; default: BUG(); } } |
9f06c719f
|
1128 1129 1130 |
static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_mknodargs *args) |
d9c407b13
|
1131 |
{ |
9f06c719f
|
1132 1133 |
encode_diropargs3(xdr, args->fh, args->name, args->len); encode_mknoddata3(xdr, args); |
d9c407b13
|
1134 1135 1136 1137 1138 1139 1140 1141 1142 |
} /* * 3.3.12 REMOVE3args * * struct REMOVE3args { * diropargs3 object; * }; */ |
9f06c719f
|
1143 1144 1145 |
static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs_removeargs *args) |
d9c407b13
|
1146 |
{ |
9f06c719f
|
1147 |
encode_diropargs3(xdr, args->fh, args->name.name, args->name.len); |
d9c407b13
|
1148 1149 1150 |
} /* |
d9c407b13
|
1151 1152 1153 1154 1155 1156 1157 |
* 3.3.14 RENAME3args * * struct RENAME3args { * diropargs3 from; * diropargs3 to; * }; */ |
9f06c719f
|
1158 1159 1160 |
static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs_renameargs *args) |
d9c407b13
|
1161 1162 1163 |
{ const struct qstr *old = args->old_name; const struct qstr *new = args->new_name; |
d9c407b13
|
1164 |
|
9f06c719f
|
1165 1166 |
encode_diropargs3(xdr, args->old_dir, old->name, old->len); encode_diropargs3(xdr, args->new_dir, new->name, new->len); |
d9c407b13
|
1167 1168 1169 |
} /* |
d9c407b13
|
1170 1171 1172 1173 1174 1175 1176 |
* 3.3.15 LINK3args * * struct LINK3args { * nfs_fh3 file; * diropargs3 link; * }; */ |
9f06c719f
|
1177 1178 1179 |
static void nfs3_xdr_enc_link3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_linkargs *args) |
d9c407b13
|
1180 |
{ |
9f06c719f
|
1181 1182 |
encode_nfs_fh3(xdr, args->fromfh); encode_diropargs3(xdr, args->tofh, args->toname, args->tolen); |
d9c407b13
|
1183 1184 1185 |
} /* |
d9c407b13
|
1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 |
* 3.3.16 READDIR3args * * struct READDIR3args { * nfs_fh3 dir; * cookie3 cookie; * cookieverf3 cookieverf; * count3 count; * }; */ static void encode_readdir3args(struct xdr_stream *xdr, const struct nfs3_readdirargs *args) { __be32 *p; encode_nfs_fh3(xdr, args->fh); p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4); p = xdr_encode_cookie3(p, args->cookie); p = xdr_encode_cookieverf3(p, args->verf); *p = cpu_to_be32(args->count); } |
9f06c719f
|
1207 1208 1209 |
static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_readdirargs *args) |
d9c407b13
|
1210 |
{ |
9f06c719f
|
1211 |
encode_readdir3args(xdr, args); |
d9c407b13
|
1212 1213 |
prepare_reply_buffer(req, args->pages, 0, args->count, NFS3_readdirres_sz); |
d9c407b13
|
1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 |
} /* * 3.3.17 READDIRPLUS3args * * struct READDIRPLUS3args { * nfs_fh3 dir; * cookie3 cookie; * cookieverf3 cookieverf; * count3 dircount; * count3 maxcount; * }; */ static void encode_readdirplus3args(struct xdr_stream *xdr, const struct nfs3_readdirargs *args) { __be32 *p; encode_nfs_fh3(xdr, args->fh); p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4); p = xdr_encode_cookie3(p, args->cookie); p = xdr_encode_cookieverf3(p, args->verf); /* * readdirplus: need dircount + buffer size. * We just make sure we make dircount big enough */ *p++ = cpu_to_be32(args->count >> 3); *p = cpu_to_be32(args->count); } |
9f06c719f
|
1246 1247 1248 |
static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_readdirargs *args) |
d9c407b13
|
1249 |
{ |
9f06c719f
|
1250 |
encode_readdirplus3args(xdr, args); |
d9c407b13
|
1251 1252 |
prepare_reply_buffer(req, args->pages, 0, args->count, NFS3_readdirres_sz); |
d9c407b13
|
1253 1254 1255 |
} /* |
d9c407b13
|
1256 1257 1258 1259 1260 1261 1262 1263 1264 |
* 3.3.21 COMMIT3args * * struct COMMIT3args { * nfs_fh3 file; * offset3 offset; * count3 count; * }; */ static void encode_commit3args(struct xdr_stream *xdr, |
0b7c01533
|
1265 |
const struct nfs_commitargs *args) |
d9c407b13
|
1266 1267 1268 1269 1270 1271 1272 1273 1274 |
{ __be32 *p; encode_nfs_fh3(xdr, args->fh); p = xdr_reserve_space(xdr, 8 + 4); p = xdr_encode_hyper(p, args->offset); *p = cpu_to_be32(args->count); } |
9f06c719f
|
1275 1276 |
static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req, struct xdr_stream *xdr, |
0b7c01533
|
1277 |
const struct nfs_commitargs *args) |
d9c407b13
|
1278 |
{ |
9f06c719f
|
1279 |
encode_commit3args(xdr, args); |
d9c407b13
|
1280 |
} |
b7fa0554c
|
1281 |
#ifdef CONFIG_NFS_V3_ACL |
b7fa0554c
|
1282 |
|
9f06c719f
|
1283 1284 1285 |
static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_getaclargs *args) |
d9c407b13
|
1286 |
{ |
9f06c719f
|
1287 1288 |
encode_nfs_fh3(xdr, args->fh); encode_uint32(xdr, args->mask); |
d9c407b13
|
1289 1290 1291 1292 |
if (args->mask & (NFS_ACL | NFS_DFACL)) prepare_reply_buffer(req, args->pages, 0, NFSACL_MAXPAGES << PAGE_SHIFT, ACL3_getaclres_sz); |
d9c407b13
|
1293 |
} |
9f06c719f
|
1294 1295 1296 |
static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfs3_setaclargs *args) |
d9c407b13
|
1297 |
{ |
d9c407b13
|
1298 1299 |
unsigned int base; int error; |
9f06c719f
|
1300 1301 |
encode_nfs_fh3(xdr, NFS_FH(args->inode)); encode_uint32(xdr, args->mask); |
ee5dc7732
|
1302 1303 |
base = req->rq_slen; |
d9c407b13
|
1304 |
if (args->npages != 0) |
9f06c719f
|
1305 |
xdr_write_pages(xdr, args->pages, 0, args->len); |
ee5dc7732
|
1306 |
else |
d683cc49d
|
1307 |
xdr_reserve_space(xdr, args->len); |
d9c407b13
|
1308 |
|
9f06c719f
|
1309 |
error = nfsacl_encode(xdr->buf, base, args->inode, |
d9c407b13
|
1310 1311 |
(args->mask & NFS_ACL) ? args->acl_access : NULL, 1, 0); |
7fc388460
|
1312 |
/* FIXME: this is just broken */ |
d9c407b13
|
1313 |
BUG_ON(error < 0); |
9f06c719f
|
1314 |
error = nfsacl_encode(xdr->buf, base + error, args->inode, |
d9c407b13
|
1315 1316 1317 1318 |
(args->mask & NFS_DFACL) ? args->acl_default : NULL, 1, NFS_ACL_DEFAULT); BUG_ON(error < 0); |
d9c407b13
|
1319 |
} |
b7fa0554c
|
1320 |
#endif /* CONFIG_NFS_V3_ACL */ |
1da177e4c
|
1321 |
/* |
b2cdd9c9c
|
1322 1323 1324 1325 |
* NFSv3 XDR decode functions * * NFSv3 result types are defined in section 3.3 of RFC 1813: * "NFS Version 3 Protocol Specification". |
1da177e4c
|
1326 |
*/ |
1da177e4c
|
1327 1328 |
/* |
e4f932340
|
1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 |
* 3.3.1 GETATTR3res * * struct GETATTR3resok { * fattr3 obj_attributes; * }; * * union GETATTR3res switch (nfsstat3 status) { * case NFS3_OK: * GETATTR3resok resok; * default: * void; * }; |
1da177e4c
|
1341 |
*/ |
bf2695516
|
1342 1343 |
static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1344 |
struct nfs_fattr *result) |
1da177e4c
|
1345 |
{ |
e4f932340
|
1346 1347 |
enum nfs_stat status; int error; |
bf2695516
|
1348 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1349 1350 1351 1352 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_default; |
bf2695516
|
1353 |
error = decode_fattr3(xdr, result); |
e4f932340
|
1354 1355 1356 |
out: return error; out_default: |
5e7e5a0da
|
1357 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1358 1359 1360 |
} /* |
e4f932340
|
1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 |
* 3.3.2 SETATTR3res * * struct SETATTR3resok { * wcc_data obj_wcc; * }; * * struct SETATTR3resfail { * wcc_data obj_wcc; * }; * * union SETATTR3res switch (nfsstat3 status) { * case NFS3_OK: * SETATTR3resok resok; * default: * SETATTR3resfail resfail; * }; */ |
bf2695516
|
1378 1379 |
static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1380 1381 |
struct nfs_fattr *result) { |
e4f932340
|
1382 1383 |
enum nfs_stat status; int error; |
bf2695516
|
1384 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1385 1386 |
if (unlikely(error)) goto out; |
bf2695516
|
1387 |
error = decode_wcc_data(xdr, result); |
e4f932340
|
1388 1389 1390 1391 1392 1393 1394 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_status; out: return error; out_status: |
5e7e5a0da
|
1395 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1396 |
} |
1da177e4c
|
1397 |
/* |
e4f932340
|
1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 |
* 3.3.3 LOOKUP3res * * struct LOOKUP3resok { * nfs_fh3 object; * post_op_attr obj_attributes; * post_op_attr dir_attributes; * }; * * struct LOOKUP3resfail { * post_op_attr dir_attributes; * }; * * union LOOKUP3res switch (nfsstat3 status) { * case NFS3_OK: * LOOKUP3resok resok; * default: * LOOKUP3resfail resfail; * }; */ |
bf2695516
|
1417 1418 |
static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1419 1420 |
struct nfs3_diropres *result) { |
e4f932340
|
1421 1422 |
enum nfs_stat status; int error; |
bf2695516
|
1423 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1424 1425 1426 1427 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_default; |
bf2695516
|
1428 |
error = decode_nfs_fh3(xdr, result->fh); |
e4f932340
|
1429 1430 |
if (unlikely(error)) goto out; |
bf2695516
|
1431 |
error = decode_post_op_attr(xdr, result->fattr); |
e4f932340
|
1432 1433 |
if (unlikely(error)) goto out; |
bf2695516
|
1434 |
error = decode_post_op_attr(xdr, result->dir_attr); |
e4f932340
|
1435 1436 1437 |
out: return error; out_default: |
bf2695516
|
1438 |
error = decode_post_op_attr(xdr, result->dir_attr); |
e4f932340
|
1439 1440 |
if (unlikely(error)) goto out; |
5e7e5a0da
|
1441 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1442 1443 1444 |
} /* |
e4f932340
|
1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 |
* 3.3.4 ACCESS3res * * struct ACCESS3resok { * post_op_attr obj_attributes; * uint32 access; * }; * * struct ACCESS3resfail { * post_op_attr obj_attributes; * }; * * union ACCESS3res switch (nfsstat3 status) { * case NFS3_OK: * ACCESS3resok resok; * default: * ACCESS3resfail resfail; * }; */ |
bf2695516
|
1463 1464 |
static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1465 1466 |
struct nfs3_accessres *result) { |
e4f932340
|
1467 1468 |
enum nfs_stat status; int error; |
bf2695516
|
1469 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1470 1471 |
if (unlikely(error)) goto out; |
bf2695516
|
1472 |
error = decode_post_op_attr(xdr, result->fattr); |
e4f932340
|
1473 1474 1475 1476 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_default; |
bf2695516
|
1477 |
error = decode_uint32(xdr, &result->access); |
e4f932340
|
1478 1479 1480 |
out: return error; out_default: |
5e7e5a0da
|
1481 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1482 1483 1484 |
} /* |
e4f932340
|
1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 |
* 3.3.5 READLINK3res * * struct READLINK3resok { * post_op_attr symlink_attributes; * nfspath3 data; * }; * * struct READLINK3resfail { * post_op_attr symlink_attributes; * }; * * union READLINK3res switch (nfsstat3 status) { * case NFS3_OK: * READLINK3resok resok; * default: * READLINK3resfail resfail; * }; */ |
bf2695516
|
1503 1504 |
static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1505 1506 |
struct nfs_fattr *result) { |
e4f932340
|
1507 1508 |
enum nfs_stat status; int error; |
bf2695516
|
1509 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1510 1511 |
if (unlikely(error)) goto out; |
bf2695516
|
1512 |
error = decode_post_op_attr(xdr, result); |
e4f932340
|
1513 1514 1515 1516 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_default; |
bf2695516
|
1517 |
error = decode_nfspath3(xdr); |
e4f932340
|
1518 1519 1520 |
out: return error; out_default: |
5e7e5a0da
|
1521 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1522 1523 1524 |
} /* |
e4f932340
|
1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 |
* 3.3.6 READ3res * * struct READ3resok { * post_op_attr file_attributes; * count3 count; * bool eof; * opaque data<>; * }; * * struct READ3resfail { * post_op_attr file_attributes; * }; * * union READ3res switch (nfsstat3 status) { * case NFS3_OK: * READ3resok resok; * default: * READ3resfail resfail; * }; */ static int decode_read3resok(struct xdr_stream *xdr, |
9137bdf3d
|
1546 |
struct nfs_pgio_res *result) |
e4f932340
|
1547 1548 |
{ u32 eof, count, ocount, recvd; |
e4f932340
|
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 |
__be32 *p; p = xdr_inline_decode(xdr, 4 + 4 + 4); if (unlikely(p == NULL)) goto out_overflow; count = be32_to_cpup(p++); eof = be32_to_cpup(p++); ocount = be32_to_cpup(p++); if (unlikely(ocount != count)) goto out_mismatch; |
64bd577ea
|
1559 |
recvd = xdr_read_pages(xdr, count); |
e4f932340
|
1560 1561 |
if (unlikely(count > recvd)) goto out_cheating; |
e4f932340
|
1562 |
out: |
e4f932340
|
1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 |
result->eof = eof; result->count = count; return count; out_mismatch: dprintk("NFS: READ count doesn't match length of opaque: " "count %u != ocount %u ", count, ocount); return -EIO; out_cheating: dprintk("NFS: server cheating in read result: " "count %u > recvd %u ", count, recvd); count = recvd; eof = 0; goto out; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } |
bf2695516
|
1582 |
static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
9137bdf3d
|
1583 |
struct nfs_pgio_res *result) |
e4f932340
|
1584 |
{ |
e4f932340
|
1585 1586 |
enum nfs_stat status; int error; |
bf2695516
|
1587 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1588 1589 |
if (unlikely(error)) goto out; |
bf2695516
|
1590 |
error = decode_post_op_attr(xdr, result->fattr); |
e4f932340
|
1591 1592 |
if (unlikely(error)) goto out; |
aabff4ddc
|
1593 |
result->op_status = status; |
e4f932340
|
1594 1595 |
if (status != NFS3_OK) goto out_status; |
bf2695516
|
1596 |
error = decode_read3resok(xdr, result); |
e4f932340
|
1597 1598 1599 |
out: return error; out_status: |
5e7e5a0da
|
1600 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1601 1602 1603 |
} /* |
e4f932340
|
1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 |
* 3.3.7 WRITE3res * * enum stable_how { * UNSTABLE = 0, * DATA_SYNC = 1, * FILE_SYNC = 2 * }; * * struct WRITE3resok { * wcc_data file_wcc; * count3 count; * stable_how committed; * writeverf3 verf; * }; * * struct WRITE3resfail { * wcc_data file_wcc; * }; * * union WRITE3res switch (nfsstat3 status) { * case NFS3_OK: * WRITE3resok resok; * default: * WRITE3resfail resfail; * }; */ static int decode_write3resok(struct xdr_stream *xdr, |
9137bdf3d
|
1631 |
struct nfs_pgio_res *result) |
e4f932340
|
1632 1633 |
{ __be32 *p; |
2f2c63bc2
|
1634 |
p = xdr_inline_decode(xdr, 4 + 4); |
e4f932340
|
1635 1636 1637 1638 1639 1640 |
if (unlikely(p == NULL)) goto out_overflow; result->count = be32_to_cpup(p++); result->verf->committed = be32_to_cpup(p++); if (unlikely(result->verf->committed > NFS_FILE_SYNC)) goto out_badvalue; |
2f2c63bc2
|
1641 1642 |
if (decode_writeverf3(xdr, &result->verf->verifier)) goto out_eio; |
e4f932340
|
1643 1644 1645 1646 1647 1648 1649 |
return result->count; out_badvalue: dprintk("NFS: bad stable_how value: %u ", result->verf->committed); return -EIO; out_overflow: print_overflow_msg(__func__, xdr); |
2f2c63bc2
|
1650 |
out_eio: |
e4f932340
|
1651 1652 |
return -EIO; } |
bf2695516
|
1653 |
static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
9137bdf3d
|
1654 |
struct nfs_pgio_res *result) |
e4f932340
|
1655 |
{ |
e4f932340
|
1656 1657 |
enum nfs_stat status; int error; |
bf2695516
|
1658 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1659 1660 |
if (unlikely(error)) goto out; |
bf2695516
|
1661 |
error = decode_wcc_data(xdr, result->fattr); |
e4f932340
|
1662 1663 |
if (unlikely(error)) goto out; |
aabff4ddc
|
1664 |
result->op_status = status; |
e4f932340
|
1665 1666 |
if (status != NFS3_OK) goto out_status; |
bf2695516
|
1667 |
error = decode_write3resok(xdr, result); |
e4f932340
|
1668 1669 1670 |
out: return error; out_status: |
5e7e5a0da
|
1671 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1672 1673 1674 |
} /* |
e4f932340
|
1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 |
* 3.3.8 CREATE3res * * struct CREATE3resok { * post_op_fh3 obj; * post_op_attr obj_attributes; * wcc_data dir_wcc; * }; * * struct CREATE3resfail { * wcc_data dir_wcc; * }; * * union CREATE3res switch (nfsstat3 status) { * case NFS3_OK: * CREATE3resok resok; * default: * CREATE3resfail resfail; * }; */ static int decode_create3resok(struct xdr_stream *xdr, struct nfs3_diropres *result) { int error; error = decode_post_op_fh3(xdr, result->fh); if (unlikely(error)) goto out; error = decode_post_op_attr(xdr, result->fattr); if (unlikely(error)) goto out; /* The server isn't required to return a file handle. * If it didn't, force the client to perform a LOOKUP * to determine the correct file handle and attribute * values for the new object. */ if (result->fh->size == 0) result->fattr->valid = 0; error = decode_wcc_data(xdr, result->dir_attr); out: return error; } |
bf2695516
|
1715 1716 |
static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1717 1718 |
struct nfs3_diropres *result) { |
e4f932340
|
1719 1720 |
enum nfs_stat status; int error; |
bf2695516
|
1721 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1722 1723 1724 1725 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_default; |
bf2695516
|
1726 |
error = decode_create3resok(xdr, result); |
e4f932340
|
1727 1728 1729 |
out: return error; out_default: |
bf2695516
|
1730 |
error = decode_wcc_data(xdr, result->dir_attr); |
e4f932340
|
1731 1732 |
if (unlikely(error)) goto out; |
5e7e5a0da
|
1733 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 |
} /* * 3.3.12 REMOVE3res * * struct REMOVE3resok { * wcc_data dir_wcc; * }; * * struct REMOVE3resfail { * wcc_data dir_wcc; * }; * * union REMOVE3res switch (nfsstat3 status) { * case NFS3_OK: * REMOVE3resok resok; * default: * REMOVE3resfail resfail; * }; */ |
bf2695516
|
1754 1755 |
static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1756 1757 |
struct nfs_removeres *result) { |
e4f932340
|
1758 1759 |
enum nfs_stat status; int error; |
bf2695516
|
1760 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1761 1762 |
if (unlikely(error)) goto out; |
bf2695516
|
1763 |
error = decode_wcc_data(xdr, result->dir_attr); |
e4f932340
|
1764 1765 1766 1767 1768 1769 1770 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_status; out: return error; out_status: |
5e7e5a0da
|
1771 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1772 1773 1774 |
} /* |
e4f932340
|
1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 |
* 3.3.14 RENAME3res * * struct RENAME3resok { * wcc_data fromdir_wcc; * wcc_data todir_wcc; * }; * * struct RENAME3resfail { * wcc_data fromdir_wcc; * wcc_data todir_wcc; * }; * * union RENAME3res switch (nfsstat3 status) { * case NFS3_OK: * RENAME3resok resok; * default: * RENAME3resfail resfail; * }; */ |
bf2695516
|
1794 1795 |
static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1796 1797 |
struct nfs_renameres *result) { |
e4f932340
|
1798 1799 |
enum nfs_stat status; int error; |
bf2695516
|
1800 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1801 1802 |
if (unlikely(error)) goto out; |
bf2695516
|
1803 |
error = decode_wcc_data(xdr, result->old_fattr); |
e4f932340
|
1804 1805 |
if (unlikely(error)) goto out; |
bf2695516
|
1806 |
error = decode_wcc_data(xdr, result->new_fattr); |
e4f932340
|
1807 1808 1809 1810 1811 1812 1813 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_status; out: return error; out_status: |
5e7e5a0da
|
1814 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1815 1816 1817 |
} /* |
e4f932340
|
1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 |
* 3.3.15 LINK3res * * struct LINK3resok { * post_op_attr file_attributes; * wcc_data linkdir_wcc; * }; * * struct LINK3resfail { * post_op_attr file_attributes; * wcc_data linkdir_wcc; * }; * * union LINK3res switch (nfsstat3 status) { * case NFS3_OK: * LINK3resok resok; * default: * LINK3resfail resfail; * }; */ |
bf2695516
|
1837 |
static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
1838 1839 |
struct nfs3_linkres *result) { |
e4f932340
|
1840 1841 |
enum nfs_stat status; int error; |
bf2695516
|
1842 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
1843 1844 |
if (unlikely(error)) goto out; |
bf2695516
|
1845 |
error = decode_post_op_attr(xdr, result->fattr); |
e4f932340
|
1846 1847 |
if (unlikely(error)) goto out; |
bf2695516
|
1848 |
error = decode_wcc_data(xdr, result->dir_attr); |
e4f932340
|
1849 1850 1851 1852 1853 1854 1855 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_status; out: return error; out_status: |
5e7e5a0da
|
1856 |
return nfs3_stat_to_errno(status); |
e4f932340
|
1857 1858 1859 1860 1861 1862 1863 |
} /** * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in * the local page cache * @xdr: XDR stream where entry resides * @entry: buffer to fill in with entry data |
e4f932340
|
1864 1865 |
* @plus: boolean indicating whether this should be a readdirplus entry * |
573c4e1ef
|
1866 1867 |
* Returns zero if successful, otherwise a negative errno value is * returned. |
e4f932340
|
1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 |
* * This function is not invoked during READDIR reply decoding, but * rather whenever an application invokes the getdents(2) system call * on a directory already in our cache. * * 3.3.16 entry3 * * struct entry3 { * fileid3 fileid; * filename3 name; * cookie3 cookie; * fhandle3 filehandle; * post_op_attr3 attributes; * entry3 *nextentry; * }; * * 3.3.17 entryplus3 * struct entryplus3 { * fileid3 fileid; * filename3 name; * cookie3 cookie; * post_op_attr name_attributes; * post_op_fh3 name_handle; * entryplus3 *nextentry; * }; */ |
573c4e1ef
|
1894 1895 |
int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, int plus) |
e4f932340
|
1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 |
{ struct nfs_entry old = *entry; __be32 *p; int error; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; if (*p == xdr_zero) { p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; if (*p == xdr_zero) |
573c4e1ef
|
1909 |
return -EAGAIN; |
e4f932340
|
1910 |
entry->eof = 1; |
573c4e1ef
|
1911 |
return -EBADCOOKIE; |
e4f932340
|
1912 1913 1914 1915 |
} error = decode_fileid3(xdr, &entry->ino); if (unlikely(error)) |
573c4e1ef
|
1916 |
return error; |
e4f932340
|
1917 1918 1919 |
error = decode_inline_filename3(xdr, &entry->name, &entry->len); if (unlikely(error)) |
573c4e1ef
|
1920 |
return error; |
e4f932340
|
1921 1922 1923 1924 |
entry->prev_cookie = entry->cookie; error = decode_cookie3(xdr, &entry->cookie); if (unlikely(error)) |
573c4e1ef
|
1925 |
return error; |
e4f932340
|
1926 1927 1928 1929 1930 1931 1932 |
entry->d_type = DT_UNKNOWN; if (plus) { entry->fattr->valid = 0; error = decode_post_op_attr(xdr, entry->fattr); if (unlikely(error)) |
573c4e1ef
|
1933 |
return error; |
e4f932340
|
1934 1935 |
if (entry->fattr->valid & NFS_ATTR_FATTR_V3) entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); |
1ae04b252
|
1936 1937 1938 1939 |
if (entry->fattr->fileid != entry->ino) { entry->fattr->mounted_on_fileid = entry->ino; entry->fattr->valid |= NFS_ATTR_FATTR_MOUNTED_ON_FILEID; } |
e4f932340
|
1940 1941 1942 1943 1944 1945 1946 1947 1948 |
/* In fact, a post_op_fh3: */ p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) goto out_overflow; if (*p != xdr_zero) { error = decode_nfs_fh3(xdr, entry->fh); if (unlikely(error)) { if (error == -E2BIG) goto out_truncated; |
573c4e1ef
|
1949 |
return error; |
e4f932340
|
1950 1951 1952 1953 |
} } else zero_nfs_fh3(entry->fh); } |
573c4e1ef
|
1954 |
return 0; |
e4f932340
|
1955 1956 1957 |
out_overflow: print_overflow_msg(__func__, xdr); |
573c4e1ef
|
1958 |
return -EAGAIN; |
e4f932340
|
1959 1960 1961 1962 |
out_truncated: dprintk("NFS: directory entry contains invalid file handle "); *entry = old; |
573c4e1ef
|
1963 |
return -EAGAIN; |
e4f932340
|
1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 |
} /* * 3.3.16 READDIR3res * * struct dirlist3 { * entry3 *entries; * bool eof; * }; * * struct READDIR3resok { * post_op_attr dir_attributes; * cookieverf3 cookieverf; * dirlist3 reply; * }; * * struct READDIR3resfail { * post_op_attr dir_attributes; * }; * * union READDIR3res switch (nfsstat3 status) { * case NFS3_OK: * READDIR3resok resok; * default: * READDIR3resfail resfail; * }; * * Read the directory contents into the page cache, but otherwise * don't touch them. The actual decoding is done by nfs3_decode_entry() * during subsequent nfs_readdir() calls. */ static int decode_dirlist3(struct xdr_stream *xdr) { |
64bd577ea
|
1997 |
return xdr_read_pages(xdr, xdr->buf->page_len); |
e4f932340
|
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 |
} static int decode_readdir3resok(struct xdr_stream *xdr, struct nfs3_readdirres *result) { int error; error = decode_post_op_attr(xdr, result->dir_attr); if (unlikely(error)) goto out; /* XXX: do we need to check if result->verf != NULL ? */ error = decode_cookieverf3(xdr, result->verf); if (unlikely(error)) goto out; error = decode_dirlist3(xdr); out: return error; } |
bf2695516
|
2016 2017 |
static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
2018 2019 |
struct nfs3_readdirres *result) { |
e4f932340
|
2020 2021 |
enum nfs_stat status; int error; |
bf2695516
|
2022 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
2023 2024 2025 2026 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_default; |
bf2695516
|
2027 |
error = decode_readdir3resok(xdr, result); |
e4f932340
|
2028 2029 2030 |
out: return error; out_default: |
bf2695516
|
2031 |
error = decode_post_op_attr(xdr, result->dir_attr); |
e4f932340
|
2032 2033 |
if (unlikely(error)) goto out; |
5e7e5a0da
|
2034 |
return nfs3_stat_to_errno(status); |
e4f932340
|
2035 2036 2037 |
} /* |
e4f932340
|
2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 |
* 3.3.18 FSSTAT3res * * struct FSSTAT3resok { * post_op_attr obj_attributes; * size3 tbytes; * size3 fbytes; * size3 abytes; * size3 tfiles; * size3 ffiles; * size3 afiles; * uint32 invarsec; * }; * * struct FSSTAT3resfail { * post_op_attr obj_attributes; * }; * * union FSSTAT3res switch (nfsstat3 status) { * case NFS3_OK: * FSSTAT3resok resok; * default: * FSSTAT3resfail resfail; * }; */ static int decode_fsstat3resok(struct xdr_stream *xdr, struct nfs_fsstat *result) { __be32 *p; p = xdr_inline_decode(xdr, 8 * 6 + 4); if (unlikely(p == NULL)) goto out_overflow; p = xdr_decode_size3(p, &result->tbytes); p = xdr_decode_size3(p, &result->fbytes); p = xdr_decode_size3(p, &result->abytes); p = xdr_decode_size3(p, &result->tfiles); p = xdr_decode_size3(p, &result->ffiles); xdr_decode_size3(p, &result->afiles); /* ignore invarsec */ return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } |
bf2695516
|
2082 2083 |
static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
2084 2085 |
struct nfs_fsstat *result) { |
e4f932340
|
2086 2087 |
enum nfs_stat status; int error; |
bf2695516
|
2088 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
2089 2090 |
if (unlikely(error)) goto out; |
bf2695516
|
2091 |
error = decode_post_op_attr(xdr, result->fattr); |
e4f932340
|
2092 2093 2094 2095 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_status; |
bf2695516
|
2096 |
error = decode_fsstat3resok(xdr, result); |
e4f932340
|
2097 2098 2099 |
out: return error; out_status: |
5e7e5a0da
|
2100 |
return nfs3_stat_to_errno(status); |
e4f932340
|
2101 2102 2103 |
} /* |
e4f932340
|
2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 |
* 3.3.19 FSINFO3res * * struct FSINFO3resok { * post_op_attr obj_attributes; * uint32 rtmax; * uint32 rtpref; * uint32 rtmult; * uint32 wtmax; * uint32 wtpref; * uint32 wtmult; * uint32 dtpref; * size3 maxfilesize; * nfstime3 time_delta; * uint32 properties; * }; * * struct FSINFO3resfail { * post_op_attr obj_attributes; * }; * * union FSINFO3res switch (nfsstat3 status) { * case NFS3_OK: * FSINFO3resok resok; * default: * FSINFO3resfail resfail; * }; */ static int decode_fsinfo3resok(struct xdr_stream *xdr, struct nfs_fsinfo *result) { __be32 *p; p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4); if (unlikely(p == NULL)) goto out_overflow; result->rtmax = be32_to_cpup(p++); result->rtpref = be32_to_cpup(p++); result->rtmult = be32_to_cpup(p++); result->wtmax = be32_to_cpup(p++); result->wtpref = be32_to_cpup(p++); result->wtmult = be32_to_cpup(p++); result->dtpref = be32_to_cpup(p++); p = xdr_decode_size3(p, &result->maxfilesize); |
f60487093
|
2147 |
xdr_decode_nfstime3(p, &result->time_delta); |
e4f932340
|
2148 2149 2150 2151 2152 2153 2154 2155 |
/* ignore properties */ result->lease_time = 0; return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } |
bf2695516
|
2156 2157 |
static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
2158 2159 |
struct nfs_fsinfo *result) { |
e4f932340
|
2160 2161 |
enum nfs_stat status; int error; |
bf2695516
|
2162 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
2163 2164 |
if (unlikely(error)) goto out; |
bf2695516
|
2165 |
error = decode_post_op_attr(xdr, result->fattr); |
e4f932340
|
2166 2167 2168 2169 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_status; |
bf2695516
|
2170 |
error = decode_fsinfo3resok(xdr, result); |
e4f932340
|
2171 2172 2173 |
out: return error; out_status: |
5e7e5a0da
|
2174 |
return nfs3_stat_to_errno(status); |
e4f932340
|
2175 2176 2177 |
} /* |
e4f932340
|
2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 |
* 3.3.20 PATHCONF3res * * struct PATHCONF3resok { * post_op_attr obj_attributes; * uint32 linkmax; * uint32 name_max; * bool no_trunc; * bool chown_restricted; * bool case_insensitive; * bool case_preserving; * }; * * struct PATHCONF3resfail { * post_op_attr obj_attributes; * }; * * union PATHCONF3res switch (nfsstat3 status) { * case NFS3_OK: * PATHCONF3resok resok; * default: * PATHCONF3resfail resfail; * }; */ static int decode_pathconf3resok(struct xdr_stream *xdr, struct nfs_pathconf *result) { __be32 *p; p = xdr_inline_decode(xdr, 4 * 6); if (unlikely(p == NULL)) goto out_overflow; result->max_link = be32_to_cpup(p++); result->max_namelen = be32_to_cpup(p); /* ignore remaining fields */ return 0; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } |
bf2695516
|
2217 2218 |
static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
2219 2220 |
struct nfs_pathconf *result) { |
e4f932340
|
2221 2222 |
enum nfs_stat status; int error; |
bf2695516
|
2223 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
2224 2225 |
if (unlikely(error)) goto out; |
bf2695516
|
2226 |
error = decode_post_op_attr(xdr, result->fattr); |
e4f932340
|
2227 2228 2229 2230 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_status; |
bf2695516
|
2231 |
error = decode_pathconf3resok(xdr, result); |
e4f932340
|
2232 2233 2234 |
out: return error; out_status: |
5e7e5a0da
|
2235 |
return nfs3_stat_to_errno(status); |
e4f932340
|
2236 2237 2238 |
} /* |
e4f932340
|
2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 |
* 3.3.21 COMMIT3res * * struct COMMIT3resok { * wcc_data file_wcc; * writeverf3 verf; * }; * * struct COMMIT3resfail { * wcc_data file_wcc; * }; * * union COMMIT3res switch (nfsstat3 status) { * case NFS3_OK: * COMMIT3resok resok; * default: * COMMIT3resfail resfail; * }; */ |
bf2695516
|
2257 2258 |
static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
0b7c01533
|
2259 |
struct nfs_commitres *result) |
e4f932340
|
2260 |
{ |
e4f932340
|
2261 2262 |
enum nfs_stat status; int error; |
bf2695516
|
2263 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
2264 2265 |
if (unlikely(error)) goto out; |
bf2695516
|
2266 |
error = decode_wcc_data(xdr, result->fattr); |
e4f932340
|
2267 2268 |
if (unlikely(error)) goto out; |
aabff4ddc
|
2269 |
result->op_status = status; |
e4f932340
|
2270 2271 |
if (status != NFS3_OK) goto out_status; |
2f2c63bc2
|
2272 |
error = decode_writeverf3(xdr, &result->verf->verifier); |
e4f932340
|
2273 2274 2275 |
out: return error; out_status: |
5e7e5a0da
|
2276 |
return nfs3_stat_to_errno(status); |
e4f932340
|
2277 |
} |
b7fa0554c
|
2278 |
#ifdef CONFIG_NFS_V3_ACL |
b7fa0554c
|
2279 |
|
e4f932340
|
2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 |
static inline int decode_getacl3resok(struct xdr_stream *xdr, struct nfs3_getaclres *result) { struct posix_acl **acl; unsigned int *aclcnt; size_t hdrlen; int error; error = decode_post_op_attr(xdr, result->fattr); if (unlikely(error)) goto out; error = decode_uint32(xdr, &result->mask); if (unlikely(error)) goto out; error = -EINVAL; if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) goto out; |
1aecca3e8
|
2297 |
hdrlen = xdr_stream_pos(xdr); |
e4f932340
|
2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 |
acl = NULL; if (result->mask & NFS_ACL) acl = &result->acl_access; aclcnt = NULL; if (result->mask & NFS_ACLCNT) aclcnt = &result->acl_access_count; error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl); if (unlikely(error <= 0)) goto out; acl = NULL; if (result->mask & NFS_DFACL) acl = &result->acl_default; aclcnt = NULL; if (result->mask & NFS_DFACLCNT) aclcnt = &result->acl_default_count; error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl); if (unlikely(error <= 0)) return error; error = 0; out: return error; } |
bf2695516
|
2322 2323 |
static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
2324 2325 |
struct nfs3_getaclres *result) { |
e4f932340
|
2326 2327 |
enum nfs_stat status; int error; |
bf2695516
|
2328 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
2329 2330 2331 2332 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_default; |
bf2695516
|
2333 |
error = decode_getacl3resok(xdr, result); |
e4f932340
|
2334 2335 2336 |
out: return error; out_default: |
5e7e5a0da
|
2337 |
return nfs3_stat_to_errno(status); |
e4f932340
|
2338 |
} |
bf2695516
|
2339 2340 |
static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
e4f932340
|
2341 2342 |
struct nfs_fattr *result) { |
e4f932340
|
2343 2344 |
enum nfs_stat status; int error; |
bf2695516
|
2345 |
error = decode_nfsstat3(xdr, &status); |
e4f932340
|
2346 2347 2348 2349 |
if (unlikely(error)) goto out; if (status != NFS3_OK) goto out_default; |
bf2695516
|
2350 |
error = decode_post_op_attr(xdr, result); |
e4f932340
|
2351 2352 2353 |
out: return error; out_default: |
5e7e5a0da
|
2354 |
return nfs3_stat_to_errno(status); |
e4f932340
|
2355 |
} |
b7fa0554c
|
2356 |
#endif /* CONFIG_NFS_V3_ACL */ |
5e7e5a0da
|
2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 |
/* * We need to translate between nfs status return values and * the local errno values which may not be the same. */ static const struct { int stat; int errno; } nfs_errtbl[] = { { NFS_OK, 0 }, { NFSERR_PERM, -EPERM }, { NFSERR_NOENT, -ENOENT }, { NFSERR_IO, -errno_NFSERR_IO}, { NFSERR_NXIO, -ENXIO }, /* { NFSERR_EAGAIN, -EAGAIN }, */ { NFSERR_ACCES, -EACCES }, { NFSERR_EXIST, -EEXIST }, { NFSERR_XDEV, -EXDEV }, { NFSERR_NODEV, -ENODEV }, { NFSERR_NOTDIR, -ENOTDIR }, { NFSERR_ISDIR, -EISDIR }, { NFSERR_INVAL, -EINVAL }, { NFSERR_FBIG, -EFBIG }, { NFSERR_NOSPC, -ENOSPC }, { NFSERR_ROFS, -EROFS }, { NFSERR_MLINK, -EMLINK }, { NFSERR_NAMETOOLONG, -ENAMETOOLONG }, { NFSERR_NOTEMPTY, -ENOTEMPTY }, { NFSERR_DQUOT, -EDQUOT }, { NFSERR_STALE, -ESTALE }, { NFSERR_REMOTE, -EREMOTE }, #ifdef EWFLUSH { NFSERR_WFLUSH, -EWFLUSH }, #endif { NFSERR_BADHANDLE, -EBADHANDLE }, { NFSERR_NOT_SYNC, -ENOTSYNC }, { NFSERR_BAD_COOKIE, -EBADCOOKIE }, { NFSERR_NOTSUPP, -ENOTSUPP }, { NFSERR_TOOSMALL, -ETOOSMALL }, { NFSERR_SERVERFAULT, -EREMOTEIO }, { NFSERR_BADTYPE, -EBADTYPE }, { NFSERR_JUKEBOX, -EJUKEBOX }, { -1, -EIO } }; /** * nfs3_stat_to_errno - convert an NFS status code to a local errno * @status: NFS status code to convert * * Returns a local errno value, or -EIO if the NFS status code is * not recognized. This function is used jointly by NFSv2 and NFSv3. */ static int nfs3_stat_to_errno(enum nfs_stat status) { int i; for (i = 0; nfs_errtbl[i].stat != -1; i++) { if (nfs_errtbl[i].stat == (int)status) return nfs_errtbl[i].errno; } dprintk("NFS: Unrecognized nfs status value: %u ", status); return nfs_errtbl[i].errno; } |
1da177e4c
|
2421 2422 2423 |
#define PROC(proc, argtype, restype, timer) \ [NFS3PROC_##proc] = { \ .p_proc = NFS3PROC_##proc, \ |
9f06c719f
|
2424 |
.p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \ |
bf2695516
|
2425 |
.p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \ |
ad96b5b5e
|
2426 |
.p_arglen = NFS3_##argtype##args_sz, \ |
f5fc3c50c
|
2427 |
.p_replen = NFS3_##restype##res_sz, \ |
cc0175c1d
|
2428 2429 2430 |
.p_timer = timer, \ .p_statidx = NFS3PROC_##proc, \ .p_name = #proc, \ |
1da177e4c
|
2431 2432 2433 |
} struct rpc_procinfo nfs3_procedures[] = { |
f5fc3c50c
|
2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 |
PROC(GETATTR, getattr, getattr, 1), PROC(SETATTR, setattr, setattr, 0), PROC(LOOKUP, lookup, lookup, 2), PROC(ACCESS, access, access, 1), PROC(READLINK, readlink, readlink, 3), PROC(READ, read, read, 3), PROC(WRITE, write, write, 4), PROC(CREATE, create, create, 0), PROC(MKDIR, mkdir, create, 0), PROC(SYMLINK, symlink, create, 0), PROC(MKNOD, mknod, create, 0), PROC(REMOVE, remove, remove, 0), PROC(RMDIR, lookup, setattr, 0), PROC(RENAME, rename, rename, 0), PROC(LINK, link, link, 0), PROC(READDIR, readdir, readdir, 3), PROC(READDIRPLUS, readdirplus, readdir, 3), PROC(FSSTAT, getattr, fsstat, 0), PROC(FSINFO, getattr, fsinfo, 0), PROC(PATHCONF, getattr, pathconf, 0), PROC(COMMIT, commit, commit, 5), |
1da177e4c
|
2455 |
}; |
a613fa168
|
2456 |
const struct rpc_version nfs_version3 = { |
1da177e4c
|
2457 |
.number = 3, |
e8c96f8c2
|
2458 |
.nrprocs = ARRAY_SIZE(nfs3_procedures), |
1da177e4c
|
2459 2460 |
.procs = nfs3_procedures }; |
b7fa0554c
|
2461 2462 2463 2464 |
#ifdef CONFIG_NFS_V3_ACL static struct rpc_procinfo nfs3_acl_procedures[] = { [ACLPROC3_GETACL] = { .p_proc = ACLPROC3_GETACL, |
9f06c719f
|
2465 |
.p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args, |
bf2695516
|
2466 |
.p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res, |
2bea90d43
|
2467 2468 |
.p_arglen = ACL3_getaclargs_sz, .p_replen = ACL3_getaclres_sz, |
b7fa0554c
|
2469 |
.p_timer = 1, |
cc0175c1d
|
2470 |
.p_name = "GETACL", |
b7fa0554c
|
2471 2472 2473 |
}, [ACLPROC3_SETACL] = { .p_proc = ACLPROC3_SETACL, |
9f06c719f
|
2474 |
.p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args, |
bf2695516
|
2475 |
.p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res, |
2bea90d43
|
2476 2477 |
.p_arglen = ACL3_setaclargs_sz, .p_replen = ACL3_setaclres_sz, |
b7fa0554c
|
2478 |
.p_timer = 0, |
cc0175c1d
|
2479 |
.p_name = "SETACL", |
b7fa0554c
|
2480 2481 |
}, }; |
a613fa168
|
2482 |
const struct rpc_version nfsacl_version3 = { |
b7fa0554c
|
2483 2484 2485 2486 2487 2488 |
.number = 3, .nrprocs = sizeof(nfs3_acl_procedures)/ sizeof(nfs3_acl_procedures[0]), .procs = nfs3_acl_procedures, }; #endif /* CONFIG_NFS_V3_ACL */ |