diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2000-04-19 04:00:00 +0000 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2000-04-19 04:00:00 +0000 |
commit | 46e045034336a2cc90c1798cd7cc07af744ddfd6 (patch) | |
tree | 3b9b51fc482e729f663d25333e77fbed9aaa939a /fs/nfs/nfs3xdr.c | |
parent | 31dc59d503a02e84c4de98826452acaeb56dc15a (diff) |
Merge with Linux 2.3.99-pre4.
Diffstat (limited to 'fs/nfs/nfs3xdr.c')
-rw-r--r-- | fs/nfs/nfs3xdr.c | 1147 |
1 files changed, 769 insertions, 378 deletions
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index beed6ec1e..ef8580c02 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -1,94 +1,158 @@ /* - * linux/fs/nfs/nfs2xdr.c + * linux/fs/nfs/nfs3xdr.c * * XDR functions to encode/decode NFSv3 RPC arguments and results. - * Note: this is incomplete! * - * Copyright (C) 1996 Olaf Kirch + * Copyright (C) 1996, 1997 Olaf Kirch */ -#define NFS_NEED_XDR_TYPES - #include <linux/param.h> #include <linux/sched.h> #include <linux/mm.h> #include <linux/malloc.h> -#include <linux/nfs_fs.h> #include <linux/utsname.h> #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> -#ifdef RPC_DEBUG -# define RPC_FACILITY RPCDBG_NFS -#endif +/* Uncomment this to support servers requiring longword lengths */ +#define NFS_PAD_WRITES 1 -#define QUADLEN(len) (((len) + 3) >> 2) -static int nfs_stat_to_errno(int stat); +#define NFSDBG_FACILITY NFSDBG_XDR /* Mapping from NFS error code to "errno" error code. */ #define errno_NFSERR_IO EIO +extern int nfs_stat_to_errno(int); + /* * Declare the space requirements for NFS arguments and replies as * number of 32bit-words */ -#define NFS_fhandle_sz (1+16) -#define NFS_sattr_sz 8 -#define NFS_filename_sz 1+(NFS_MAXNAMLEN>>2) -#define NFS_path_sz 1+(NFS_MAXPATHLEN>>2) -#define NFS_fattr_sz 17 -#define NFS_info_sz 5 -#define NFS_entry_sz NFS_filename_sz+3 - -#define NFS_enc_void_sz 0 -#define NFS_diropargs_sz NFS_fhandle_sz+NFS_filename_sz -#define NFS_sattrargs_sz NFS_fhandle_sz+NFS_sattr_sz -#define NFS_readargs_sz NFS_fhandle_sz+3 -#define NFS_writeargs_sz NFS_fhandle_sz+4 -#define NFS_createargs_sz NFS_diropargs_sz+NFS_sattr_sz -#define NFS_renameargs_sz NFS_diropargs_sz+NFS_diropargs_sz -#define NFS_linkargs_sz NFS_fhandle_sz+NFS_diropargs_sz -#define NFS_symlinkargs_sz NFS_diropargs_sz+NFS_path_sz+NFS_sattr_sz -#define NFS_readdirargs_sz NFS_fhandle_sz+2 - -#define NFS_dec_void_sz 0 -#define NFS_attrstat_sz 1+NFS_fattr_sz -#define NFS_diropres_sz 1+NFS_fhandle_sz+NFS_fattr_sz -#define NFS_readlinkres_sz 1+NFS_path_sz -#define NFS_readres_sz 1+NFS_fattr_sz+1 -#define NFS_stat_sz 1 -#define NFS_readdirres_sz 1 -#define NFS_statfsres_sz 1+NFS_info_sz +#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 +#define NFS3_wcc_attr_sz 6 +#define NFS3_pre_op_attr_sz 1+NFS3_wcc_attr_sz +#define NFS3_post_op_attr_sz 1+NFS3_fattr_sz +#define NFS3_wcc_data_sz NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz +#define NFS3_fsstat_sz +#define NFS3_fsinfo_sz +#define NFS3_pathconf_sz +#define NFS3_entry_sz NFS3_filename_sz+3 + +#define NFS3_enc_void_sz 0 +#define NFS3_sattrargs_sz NFS3_fh_sz+NFS3_sattr_sz+3 +#define NFS3_diropargs_sz NFS3_fh_sz+NFS3_filename_sz +#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 +#define NFS3_symlinkargs_sz NFS3_diropargs_sz+NFS3_path_sz+NFS3_sattr_sz +#define NFS3_mknodargs_sz NFS3_diropargs_sz+2+NFS3_sattr_sz +#define NFS3_renameargs_sz NFS3_diropargs_sz+NFS3_diropargs_sz +#define NFS3_linkargs_sz NFS3_fh_sz+NFS3_diropargs_sz +#define NFS3_readdirargs_sz NFS3_fh_sz+2 +#define NFS3_commitargs_sz NFS3_fh_sz+3 + +#define NFS3_dec_void_sz 0 +#define NFS3_attrstat_sz 1+NFS3_fattr_sz +#define NFS3_wccstat_sz 1+NFS3_wcc_data_sz +#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 +#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 + +/* + * Map file type to S_IFMT bits + */ +static struct { + unsigned int mode; + unsigned int nfs2type; +} nfs_type2fmt[] = { + { 0, NFNON }, + { S_IFREG, NFREG }, + { S_IFDIR, NFDIR }, + { S_IFBLK, NFBLK }, + { S_IFCHR, NFCHR }, + { S_IFLNK, NFLNK }, + { S_IFSOCK, NFSOCK }, + { S_IFIFO, NFFIFO }, + { 0, NFBAD } +}; /* * Common NFS XDR functions as inlines */ static inline u32 * -xdr_encode_fhandle(u32 *p, struct nfs3_fh *fh) +xdr_encode_fhandle(u32 *p, struct nfs_fh *fh) { *p++ = htonl(fh->size); memcpy(p, fh->data, fh->size); - return p + QUADLEN(fh->size); + return p + XDR_QUADLEN(fh->size); } static inline u32 * -xdr_decode_fhandle(u32 *p, struct nfs3_fh *fh) +xdr_decode_fhandle(u32 *p, struct nfs_fh *fh) { + /* + * Zero all nonused bytes + */ + memset((u8 *)fh, 0, sizeof(*fh)); if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { memcpy(fh->data, p, fh->size); - return p + QUADLEN(fh->size); + return p + XDR_QUADLEN(fh->size); } return NULL; } -static inline enum nfs_ftype -xdr_decode_ftype(u32 type) +/* + * Encode/decode time. + * Since the VFS doesn't care for fractional times, we ignore the + * nanosecond field. + */ +static inline u32 * +xdr_encode_time(u32 *p, time_t time) +{ + *p++ = htonl(time); + *p++ = 0; + return p; +} + +static inline u32 * +xdr_decode_time3(u32 *p, u64 *timep) { - return (type == NF3FIFO)? NFFIFO : (enum nfs_ftype) type; + *timep = ((u64)ntohl(*p++) << 32) + (u64)ntohl(*p++); + return p; +} + +static inline u32 * +xdr_encode_time3(u32 *p, u64 time) +{ + *p++ = htonl(time >> 32); + *p++ = htonl(time & 0xFFFFFFFF); + return p; } static inline u32 * @@ -99,47 +163,119 @@ xdr_decode_string2(u32 *p, char **string, unsigned int *len, if (*len > maxlen) return NULL; *string = (char *) p; - return p + QUADLEN(*len); + return p + XDR_QUADLEN(*len); } static inline u32 * -xdr_decode_fattr(u32 *p, struct nfs3_fattr *fattr) +xdr_decode_fattr(u32 *p, struct nfs_fattr *fattr) { - fattr->type = xdr_decode_ftype(ntohl(*p++)); - fattr->mode = ntohl(*p++); + unsigned int type; + int fmode; + + type = ntohl(*p++); + if (type >= NF3BAD) + type = NF3BAD; + fmode = nfs_type2fmt[type].mode; + fattr->type = nfs_type2fmt[type].nfs2type; + fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; fattr->nlink = ntohl(*p++); fattr->uid = ntohl(*p++); fattr->gid = ntohl(*p++); - fattr->size = ((u64) ntohl(*p++) << 32) | ntohl(*p++); - fattr->used = ((u64) ntohl(*p++) << 32) | ntohl(*p++); - fattr->rdev_maj = ntohl(*p++); - fattr->rdev_min = ntohl(*p++); - fattr->fsid = ntohl(*p++); - fattr->fileid = ntohl(*p++); - fattr->atime.seconds = ntohl(*p++); - fattr->atime.useconds = ntohl(*p++); - fattr->mtime.seconds = ntohl(*p++); - fattr->mtime.useconds = ntohl(*p++); - fattr->ctime.seconds = ntohl(*p++); - fattr->ctime.useconds = ntohl(*p++); + p = xdr_decode_hyper(p, &fattr->size); + p = xdr_decode_hyper(p, &fattr->du.nfs3.used); + /* Turn remote device info into Linux-specific dev_t */ + fattr->rdev = (ntohl(*p++) << MINORBITS) | (ntohl(*p++) & MINORMASK); + p = xdr_decode_hyper(p, &fattr->fsid); + p = xdr_decode_hyper(p, &fattr->fileid); + p = xdr_decode_time3(p, &fattr->atime); + p = xdr_decode_time3(p, &fattr->mtime); + p = xdr_decode_time3(p, &fattr->ctime); + + /* Update the mode bits */ + fattr->valid |= (NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3); + return p; +} + +static inline u32 * +xdr_encode_sattr(u32 *p, struct iattr *attr) +{ + if (attr->ia_valid & ATTR_MODE) { + *p++ = xdr_one; + *p++ = htonl(attr->ia_mode); + } else { + *p++ = xdr_zero; + } + if (attr->ia_valid & ATTR_UID) { + *p++ = xdr_one; + *p++ = htonl(attr->ia_uid); + } else { + *p++ = xdr_zero; + } + if (attr->ia_valid & ATTR_GID) { + *p++ = xdr_one; + *p++ = htonl(attr->ia_gid); + } 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_time(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; + p = xdr_encode_time(p, attr->ia_mtime); + } else if (attr->ia_valid & ATTR_MTIME) { + *p++ = xdr_one; + } else { + *p++ = xdr_zero; + } + return p; +} + +static inline u32 * +xdr_decode_wcc_attr(u32 *p, struct nfs_fattr *fattr) +{ + p = xdr_decode_hyper(p, &fattr->pre_size); + p = xdr_decode_time3(p, &fattr->pre_mtime); + p = xdr_decode_time3(p, &fattr->pre_ctime); + fattr->valid |= NFS_ATTR_WCC; return p; } static inline u32 * -xdr_encode_sattr(u32 *p, struct nfs_sattr *sattr) -{ - *p++ = htonl(sattr->mode); - *p++ = htonl(sattr->uid); - *p++ = htonl(sattr->gid); - *p++ = htonl(sattr->size >> 32); - *p++ = htonl(sattr->size & 0xFFFFFFFF); - *p++ = htonl(sattr->atime.seconds); - *p++ = htonl(sattr->atime.useconds); - *p++ = htonl(sattr->mtime.seconds); - *p++ = htonl(sattr->mtime.useconds); +xdr_decode_post_op_attr(u32 *p, struct nfs_fattr *fattr) +{ + if (*p++) + p = xdr_decode_fattr(p, fattr); return p; } +static inline u32 * +xdr_decode_pre_op_attr(u32 *p, struct nfs_fattr *fattr) +{ + if (*p++) + return xdr_decode_wcc_attr(p, fattr); + return p; +} + + +static inline u32 * +xdr_decode_wcc_data(u32 *p, struct nfs_fattr *fattr) +{ + p = xdr_decode_pre_op_attr(p, fattr); + return xdr_decode_post_op_attr(p, fattr); +} + /* * NFS encode functions */ @@ -147,7 +283,7 @@ xdr_encode_sattr(u32 *p, struct nfs_sattr *sattr) * Encode void argument */ static int -nfs_xdr_enc_void(struct rpc_rqst *req, u32 *p, void *dummy) +nfs3_xdr_enc_void(struct rpc_rqst *req, u32 *p, void *dummy) { req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); return 0; @@ -155,10 +291,9 @@ nfs_xdr_enc_void(struct rpc_rqst *req, u32 *p, void *dummy) /* * Encode file handle argument - * GETATTR, READLINK, STATFS */ static int -nfs_xdr_fhandle(struct rpc_rqst *req, u32 *p, struct nfs3_fh *fh) +nfs3_xdr_fhandle(struct rpc_rqst *req, u32 *p, struct nfs_fh *fh) { p = xdr_encode_fhandle(p, fh); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); @@ -169,23 +304,37 @@ nfs_xdr_fhandle(struct rpc_rqst *req, u32 *p, struct nfs3_fh *fh) * Encode SETATTR arguments */ static int -nfs_xdr_sattrargs(struct rpc_rqst *req, u32 *p, struct nfs_sattrargs *args) +nfs3_xdr_sattrargs(struct rpc_rqst *req, u32 *p, struct nfs3_sattrargs *args) { p = xdr_encode_fhandle(p, args->fh); p = xdr_encode_sattr(p, args->sattr); + *p++ = htonl(args->guard); + if (args->guard) + p = xdr_encode_time3(p, args->guardtime); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); return 0; } /* * Encode directory ops argument - * LOOKUP, REMOVE, RMDIR */ static int -nfs_xdr_diropargs(struct rpc_rqst *req, u32 *p, struct nfs_diropargs *args) +nfs3_xdr_diropargs(struct rpc_rqst *req, u32 *p, struct nfs3_diropargs *args) +{ + p = xdr_encode_fhandle(p, args->fh); + p = xdr_encode_array(p, args->name, args->len); + req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + return 0; +} + +/* + * Encode access() argument + */ +static int +nfs3_xdr_accessargs(struct rpc_rqst *req, u32 *p, struct nfs3_accessargs *args) { p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_string(p, args->name); + *p++ = htonl(args->access); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); return 0; } @@ -193,149 +342,181 @@ nfs_xdr_diropargs(struct rpc_rqst *req, u32 *p, struct nfs_diropargs *args) /* * Arguments to a READ call. Since we read data directly into the page * cache, we also set up the reply iovec here so that iov[1] points - * exactly to the page wewant to fetch. + * exactly to the page we want to fetch. */ static int -nfs_xdr_readargs(struct rpc_rqst *req, u32 *p, struct nfs_readargs *args) +nfs3_xdr_readargs(struct rpc_rqst *req, u32 *p, struct nfs_readargs *args) { struct rpc_auth *auth = req->rq_task->tk_auth; - int replen, buflen; + int buflen, replen; + unsigned int nr; p = xdr_encode_fhandle(p, args->fh); - *p++ = htonl(args->offset); - *p++ = htonl(args->count); + p = xdr_encode_hyper(p, args->offset); *p++ = htonl(args->count); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); -#if 1 + /* Get the number of buffers in the receive iovec */ + nr = args->nriov; + + if (nr+2 > MAX_IOVEC) { + printk(KERN_ERR "NFS: Bad number of iov's in xdr_readargs\n"); + return -EINVAL; + } + /* set up reply iovec */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readres_sz) << 2; + replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; buflen = req->rq_rvec[0].iov_len; req->rq_rvec[0].iov_len = replen; - req->rq_rvec[1].iov_base = args->buffer; - req->rq_rvec[1].iov_len = args->count; - req->rq_rvec[2].iov_base = (u8 *) req->rq_rvec[0].iov_base + replen; - req->rq_rvec[2].iov_len = buflen - replen; + + /* Copy the iovec */ + memcpy(req->rq_rvec + 1, args->iov, nr * sizeof(struct iovec)); + + req->rq_rvec[nr+1].iov_base = (u8 *) req->rq_rvec[0].iov_base + replen; + req->rq_rvec[nr+1].iov_len = buflen - replen; req->rq_rlen = args->count + buflen; - req->rq_rnr = 3; -#else - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readres_sz) << 2; - req->rq_rvec[0].iov_len = replen; -#endif + req->rq_rnr += nr+1; return 0; } /* - * Decode READ reply + * Write arguments. Splice the buffer to be written into the iovec. */ static int -nfs_xdr_readres(struct rpc_rqst *req, u32 *p, struct nfs_readres *res) +nfs3_xdr_writeargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args) { - struct iovec *iov = req->rq_rvec; - int status, count, recvd, hdrlen; + unsigned int nr; + u32 count = args->count; - dprintk("RPC: readres OK status %lx\n", ntohl(*p)); - if ((status = ntohl(*p++))) - return -nfs_stat_to_errno(status); - p = xdr_decode_fattr(p, res->fattr); + p = xdr_encode_fhandle(p, args->fh); + p = xdr_encode_hyper(p, args->offset); + *p++ = htonl(count); + *p++ = htonl(args->stable); + *p++ = htonl(count); + req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - count = ntohl(*p++); - hdrlen = (u8 *) p - (u8 *) iov->iov_base; - recvd = req->rq_rlen - hdrlen; - if (p != iov[2].iov_base) { - /* Unexpected reply header size. Punt. - * XXX: Move iovec contents to align data on page - * boundary and adjust RPC header size guess */ - printk("NFS: Odd RPC header size in read reply: %d\n", hdrlen); - return -errno_NFSERR_IO; - } - if (count > recvd) { - printk("NFS: server cheating in read reply: " - "count %d > recvd %d\n", count, recvd); - count = recvd; + /* Get the number of buffers in the send iovec */ + nr = args->nriov; + + if (nr+2 > MAX_IOVEC) { + printk(KERN_ERR "NFS: Bad number of iov's in xdr_writeargs\n"); + return -EINVAL; } - dprintk("RPC: readres OK count %d\n", count); - if (count < res->count) - memset((u8 *)(iov[1].iov_base+count), 0, res->count-count); + /* Copy the iovec */ + memcpy(req->rq_svec + 1, args->iov, nr * sizeof(struct iovec)); - return count; -} +#ifdef NFS_PAD_WRITES + /* + * Some old servers require that the message length + * be a multiple of 4, so we pad it here if needed. + */ + if (count & 3) { + struct iovec *iov = req->rq_svec + nr + 1; + int pad = 4 - (count & 3); + + iov->iov_base = (void *) "\0\0\0"; + iov->iov_len = pad; + count += pad; + nr++; + } +#endif + req->rq_slen += count; + req->rq_snr += nr; + return 0; +} /* - * Write arguments. Splice the buffer to be written into the iovec. + * Encode CREATE arguments */ static int -nfs_xdr_writeargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args) +nfs3_xdr_createargs(struct rpc_rqst *req, u32 *p, struct nfs3_createargs *args) { p = xdr_encode_fhandle(p, args->fh); - *p++ = htonl(args->offset); - *p++ = htonl(args->offset); - *p++ = htonl(args->count); - *p++ = htonl(args->count); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + p = xdr_encode_array(p, args->name, args->len); - req->rq_svec[1].iov_base = (void *) args->buffer; - req->rq_svec[1].iov_len = args->count; - req->rq_slen += args->count; - req->rq_snr = 2; + *p++ = htonl(args->createmode); + if (args->createmode == NFS3_CREATE_EXCLUSIVE) { + *p++ = args->verifier[0]; + *p++ = args->verifier[1]; + } else + p = xdr_encode_sattr(p, args->sattr); + req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); return 0; } /* - * Encode create arguments - * CREATE, MKDIR + * Encode MKDIR arguments */ static int -nfs_xdr_createargs(struct rpc_rqst *req, u32 *p, struct nfs_createargs *args) +nfs3_xdr_mkdirargs(struct rpc_rqst *req, u32 *p, struct nfs3_mkdirargs *args) { p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_string(p, args->name); + p = xdr_encode_array(p, args->name, args->len); p = xdr_encode_sattr(p, args->sattr); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); return 0; } /* - * Encode RENAME arguments + * Encode SYMLINK arguments */ static int -nfs_xdr_renameargs(struct rpc_rqst *req, u32 *p, struct nfs_renameargs *args) +nfs3_xdr_symlinkargs(struct rpc_rqst *req, u32 *p, struct nfs3_symlinkargs *args) { p = xdr_encode_fhandle(p, args->fromfh); - p = xdr_encode_string(p, args->fromname); - p = xdr_encode_fhandle(p, args->tofh); - p = xdr_encode_string(p, args->toname); + p = xdr_encode_array(p, args->fromname, args->fromlen); + p = xdr_encode_sattr(p, args->sattr); + p = xdr_encode_array(p, args->topath, args->tolen); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); return 0; } /* - * Encode LINK arguments + * Encode MKNOD arguments + */ +static int +nfs3_xdr_mknodargs(struct rpc_rqst *req, u32 *p, struct nfs3_mknodargs *args) +{ + p = xdr_encode_fhandle(p, args->fh); + p = xdr_encode_array(p, args->name, args->len); + *p++ = htonl(args->type); + p = xdr_encode_sattr(p, args->sattr); + if (args->type == NF3CHR || args->type == NF3BLK) { + *p++ = htonl(args->rdev >> MINORBITS); + *p++ = htonl(args->rdev & MINORMASK); + } + + req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + return 0; +} + +/* + * Encode RENAME arguments */ static int -nfs_xdr_linkargs(struct rpc_rqst *req, u32 *p, struct nfs_linkargs *args) +nfs3_xdr_renameargs(struct rpc_rqst *req, u32 *p, struct nfs3_renameargs *args) { p = xdr_encode_fhandle(p, args->fromfh); + p = xdr_encode_array(p, args->fromname, args->fromlen); p = xdr_encode_fhandle(p, args->tofh); - p = xdr_encode_string(p, args->toname); + p = xdr_encode_array(p, args->toname, args->tolen); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); return 0; } /* - * Encode SYMLINK arguments + * Encode LINK arguments */ static int -nfs_xdr_symlinkargs(struct rpc_rqst *req, u32 *p, struct nfs_symlinkargs *args) +nfs3_xdr_linkargs(struct rpc_rqst *req, u32 *p, struct nfs3_linkargs *args) { p = xdr_encode_fhandle(p, args->fromfh); - p = xdr_encode_string(p, args->fromname); - p = xdr_encode_string(p, args->topath); - p = xdr_encode_sattr(p, args->sattr); + p = xdr_encode_fhandle(p, args->tofh); + p = xdr_encode_array(p, args->toname, args->tolen); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); return 0; } @@ -344,131 +525,164 @@ nfs_xdr_symlinkargs(struct rpc_rqst *req, u32 *p, struct nfs_symlinkargs *args) * Encode arguments to readdir call */ static int -nfs_xdr_readdirargs(struct rpc_rqst *req, u32 *p, struct nfs_readdirargs *args) +nfs3_xdr_readdirargs(struct rpc_rqst *req, u32 *p, struct nfs3_readdirargs *args) { struct rpc_auth *auth = req->rq_task->tk_auth; - int replen; + int buflen, replen; p = xdr_encode_fhandle(p, args->fh); - *p++ = htonl(args->cookie); + p = xdr_encode_hyper(p, args->cookie); + *p++ = args->verf[0]; + *p++ = args->verf[1]; + if (args->plus) { + /* readdirplus: need dircount + buffer size. + * We just make sure we make dircount big enough */ + *p++ = htonl(args->bufsiz >> 3); + } *p++ = htonl(args->bufsiz); req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); /* set up reply iovec */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readdirres_sz) << 2; - /* - dprintk("RPC: readdirargs: slack is 4 * (%d + %d + %d) = %d\n", - RPC_REPHDRSIZE, auth->au_rslack, NFS_readdirres_sz, replen); - */ + replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; + buflen = req->rq_rvec[0].iov_len; req->rq_rvec[0].iov_len = replen; req->rq_rvec[1].iov_base = args->buffer; req->rq_rvec[1].iov_len = args->bufsiz; - req->rq_rlen = replen + args->bufsiz; - req->rq_rnr = 2; - - /* - dprintk("RPC: readdirargs set up reply vec:\n"); - dprintk(" rvec[0] = %p/%d\n", - req->rq_rvec[0].iov_base, - req->rq_rvec[0].iov_len); - dprintk(" rvec[1] = %p/%d\n", - req->rq_rvec[1].iov_base, - req->rq_rvec[1].iov_len); - */ + req->rq_rvec[2].iov_base = (u8 *) req->rq_rvec[0].iov_base + replen; + req->rq_rvec[2].iov_len = buflen - replen; + req->rq_rlen = buflen + args->bufsiz; + req->rq_rnr += 2; return 0; } /* - * Decode the result of a readdir call. We decode the result in place - * to avoid a malloc of NFS_MAXNAMLEN+1 for each file name. - * After decoding, the layout in memory looks like this: - * entry1 entry2 ... entryN <space> stringN ... string2 string1 - * Each entry consists of three __u32 values, the same space as NFS uses. - * Note that the strings are not null-terminated so that the entire number - * of entries returned by the server should fit into the buffer. + * Decode the result of a readdir call. + * We just check for syntactical correctness. */ static int -nfs_xdr_readdirres(struct rpc_rqst *req, u32 *p, struct nfs_readdirres *res) +nfs3_xdr_readdirres(struct rpc_rqst *req, u32 *p, struct nfs3_readdirres *res) { - struct iovec *iov = req->rq_rvec; - int status, nr, len; - char *string, *start; - u32 *end; - __u32 fileid, cookie, *entry; - - if ((status = ntohl(*p++))) + struct iovec *iov = req->rq_rvec; + int hdrlen; + int status, nr; + unsigned int len; + u32 *entry, *end; + + status = ntohl(*p++); + /* Decode post_op_attrs */ + p = xdr_decode_post_op_attr(p, res->dir_attr); + if (status) return -nfs_stat_to_errno(status); - if ((void *) p != ((u8 *) iov->iov_base+iov->iov_len)) { - /* Unexpected reply header size. Punt. */ - printk("NFS: Odd RPC header size in readdirres reply\n"); - return -errno_NFSERR_IO; + /* Decode verifier cookie */ + if (res->verf) { + res->verf[0] = *p++; + res->verf[1] = *p++; + } else { + p += 2; } - p = (u32 *) iov[1].iov_base; - end = (u32 *) ((u8 *) p + iov[1].iov_len); - - if (p != res->buffer) { - printk("NFS: p != res->buffer in %s:%d!!!\n", - __FILE__, __LINE__); - return -errno_NFSERR_IO; + hdrlen = (u8 *) p - (u8 *) iov->iov_base; + if (iov->iov_len > hdrlen) { + dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); + xdr_shift_iovec(iov, req->rq_rnr, iov->iov_len - hdrlen); } - entry = (__u32 *) res->buffer; - start = (char *) res->buffer; - string = start + res->bufsiz; + p = (u32 *) iov[1].iov_base; + end = (u32 *) ((u8 *) p + iov[1].iov_len); for (nr = 0; *p++; nr++) { - fileid = ntohl(*p++); - - len = ntohl(*p++); - if ((p + QUADLEN(len) + 3) > end) { - printk(KERN_NOTICE - "NFS: short packet in readdir reply!\n"); - break; - } - if (len > NFS_MAXNAMLEN) { - printk("NFS: giant filename in readdir (len %x)!\n", + entry = p - 1; + p += 2; /* inode # */ + len = ntohl(*p++); /* string length */ + p += XDR_QUADLEN(len) + 2; /* name + cookie */ + if (len > NFS3_MAXNAMLEN) { + printk(KERN_WARNING "NFS: giant filename in readdir (len %x)!\n", len); return -errno_NFSERR_IO; } - string -= len; - if ((void *) (entry+3) > (void *) string) { - /* - * This error is impossible as long as the temp - * buffer is no larger than the user buffer. The - * current packing algorithm uses the same amount - * of space in the user buffer as in the XDR data, - * so it's guaranteed to fit. - */ - printk("NFS: incorrect buffer size in %s!\n", - __FUNCTION__); - break; + + if (res->plus) { + /* post_op_attr */ + if (*p++) + p += 21; + /* post_op_fh3 */ + if (*p++) { + len = ntohl(*p++); + if (len > NFS3_FHSIZE) { + printk(KERN_WARNING "NFS: giant filehandle in " + "readdir (len %x)!\n", len); + return -errno_NFSERR_IO; + } + p += XDR_QUADLEN(len); + } } - memmove(string, p, len); - p += QUADLEN(len); - cookie = ntohl(*p++); - /* - * To make everything fit, we encode the length, offset, - * and eof flag into 32 bits. This works for filenames - * up to 32K and PAGE_SIZE up to 64K. - */ - status = !p[0] && p[1] ? (1 << 15) : 0; /* eof flag */ - *entry++ = fileid; - *entry++ = cookie; - *entry++ = ((string - start) << 16) | status | (len & 0x7FFF); - /* - dprintk("NFS: decoded dirent %.*s cookie %d eof %d\n", - len, string, cookie, status); - */ + if (p + 2 > end) { + printk(KERN_NOTICE + "NFS: short packet in readdir reply!\n"); + /* truncate listing */ + entry[0] = entry[1] = 0; + break; + } } -#ifdef NFS_PARANOIA -printk("nfs_xdr_readdirres: %d entries, ent sp=%d, str sp=%d\n", -nr, ((char *) entry - start), (start + res->bufsiz - string)); -#endif + return nr; } +u32 * +nfs3_decode_dirent(u32 *p, struct nfs_entry *entry, int plus) +{ + struct nfs_entry old = *entry; + + if (!*p++) { + if (!*p) + return ERR_PTR(-EAGAIN); + entry->eof = 1; + return ERR_PTR(-EBADCOOKIE); + } + + p = xdr_decode_hyper(p, &entry->ino); + entry->len = ntohl(*p++); + entry->name = (const char *) p; + p += XDR_QUADLEN(entry->len); + entry->prev_cookie = entry->cookie; + p = xdr_decode_hyper(p, &entry->cookie); + + if (plus) { + p = xdr_decode_post_op_attr(p, &entry->fattr); + /* In fact, a post_op_fh3: */ + if (*p++) { + p = xdr_decode_fhandle(p, &entry->fh); + /* Ugh -- server reply was truncated */ + if (p == NULL) { + dprintk("NFS: FH truncated\n"); + *entry = old; + return ERR_PTR(-EAGAIN); + } + } else { + /* If we don't get a file handle, the attrs + * aren't worth a lot. */ + entry->fattr.valid = 0; + } + } + + entry->eof = !p[0] && p[1]; + return p; +} + +/* + * Encode COMMIT arguments + */ +static int +nfs3_xdr_commitargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args) +{ + p = xdr_encode_fhandle(p, args->fh); + p = xdr_encode_hyper(p, args->offset); + *p++ = htonl(args->count); + req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + return 0; +} + /* * NFS XDR decode functions */ @@ -476,59 +690,92 @@ nr, ((char *) entry - start), (start + res->bufsiz - string)); * Decode void reply */ static int -nfs_xdr_dec_void(struct rpc_rqst *req, u32 *p, void *dummy) +nfs3_xdr_dec_void(struct rpc_rqst *req, u32 *p, void *dummy) { return 0; } /* - * Decode simple status reply + * Decode attrstat reply. */ static int -nfs_xdr_stat(struct rpc_rqst *req, u32 *p, void *dummy) +nfs3_xdr_attrstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) { int status; - if ((status = ntohl(*p++)) != 0) - status = -nfs_stat_to_errno(status); - return status; + if ((status = ntohl(*p++))) + return -nfs_stat_to_errno(status); + xdr_decode_fattr(p, fattr); + return 0; } /* - * Decode attrstat reply - * GETATTR, SETATTR, WRITE + * Decode status+wcc_data reply + * SATTR, REMOVE, RMDIR */ static int -nfs_xdr_attrstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) +nfs3_xdr_wccstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) { int status; - dprintk("RPC: attrstat status %lx\n", ntohl(*p)); if ((status = ntohl(*p++))) - return -nfs_stat_to_errno(status); - xdr_decode_fattr(p, fattr); - dprintk("RPC: attrstat OK type %d mode %o dev %x ino %x\n", - fattr->type, fattr->mode, fattr->fsid, fattr->fileid); - return 0; + status = -nfs_stat_to_errno(status); + xdr_decode_wcc_data(p, fattr); + return status; } /* - * Decode diropres reply - * LOOKUP, CREATE, MKDIR + * Decode LOOKUP reply */ static int -nfs_xdr_diropres(struct rpc_rqst *req, u32 *p, struct nfs_diropok *res) +nfs3_xdr_lookupres(struct rpc_rqst *req, u32 *p, struct nfs3_diropres *res) { int status; - dprintk("RPC: diropres status %lx\n", ntohl(*p)); - if ((status = ntohl(*p++))) + if ((status = ntohl(*p++))) { + status = -nfs_stat_to_errno(status); + } else { + if (!(p = xdr_decode_fhandle(p, res->fh))) + return -errno_NFSERR_IO; + p = xdr_decode_post_op_attr(p, res->fattr); + } + xdr_decode_post_op_attr(p, res->dir_attr); + return status; +} + +/* + * Decode ACCESS reply + */ +static int +nfs3_xdr_accessres(struct rpc_rqst *req, u32 *p, struct nfs3_accessres *res) +{ + int status = ntohl(*p++); + + p = xdr_decode_post_op_attr(p, res->fattr); + if (status) return -nfs_stat_to_errno(status); - p = xdr_decode_fhandle(p, res->fh); - xdr_decode_fattr(p, res->fattr); - dprintk("RPC: diropres OK type %x mode %o dev %x ino %x\n", - res->fattr->type, res->fattr->mode, - res->fattr->fsid, res->fattr->fileid); + res->access = ntohl(*p++); + return 0; +} + +static int +nfs3_xdr_readlinkargs(struct rpc_rqst *req, u32 *p, struct nfs3_readlinkargs *args) +{ + struct rpc_task *task = req->rq_task; + struct rpc_auth *auth = task->tk_auth; + int buflen, replen; + + p = xdr_encode_fhandle(p, args->fh); + req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; + buflen = req->rq_rvec[0].iov_len; + req->rq_rvec[0].iov_len = replen; + req->rq_rvec[1].iov_base = args->buffer; + req->rq_rvec[1].iov_len = args->bufsiz; + req->rq_rvec[2].iov_base = (u8 *) req->rq_rvec[0].iov_base + replen; + req->rq_rvec[2].iov_len = buflen - replen; + req->rq_rlen = buflen + args->bufsiz; + req->rq_rnr += 2; return 0; } @@ -536,155 +783,299 @@ nfs_xdr_diropres(struct rpc_rqst *req, u32 *p, struct nfs_diropok *res) * Decode READLINK reply */ static int -nfs_xdr_readlinkres(struct rpc_rqst *req, u32 *p, struct nfs_readlinkres *res) +nfs3_xdr_readlinkres(struct rpc_rqst *req, u32 *p, struct nfs3_readlinkres *res) { + struct iovec *iov = req->rq_rvec; + int hdrlen; + u32 *strlen; + char *string; int status; + unsigned int len; - if ((status = ntohl(*p++))) + status = ntohl(*p++); + p = xdr_decode_post_op_attr(p, res->fattr); + + if (status != 0) return -nfs_stat_to_errno(status); - xdr_decode_string2(p, res->string, res->lenp, res->maxlen); - /* Caller takes over the buffer here to avoid extra copy */ - res->buffer = req->rq_task->tk_buffer; - req->rq_task->tk_buffer = NULL; + hdrlen = (u8 *) p - (u8 *) iov->iov_base; + if (iov->iov_len > hdrlen) { + dprintk("NFS: READLINK header is short. iovec will be shifted.\n"); + xdr_shift_iovec(iov, req->rq_rnr, iov->iov_len - hdrlen); + } + + strlen = (u32*)res->buffer; + /* Convert length of symlink */ + len = ntohl(*strlen); + if (len > res->bufsiz - 5) + len = res->bufsiz - 5; + *strlen = len; + /* NULL terminate the string we got */ + string = (char *)(strlen + 1); + string[len] = 0; return 0; } /* - * Decode STATFS reply + * Decode READ reply */ static int -nfs_xdr_statfsres(struct rpc_rqst *req, u32 *p, struct nfs_fsinfo *res) +nfs3_xdr_readres(struct rpc_rqst *req, u32 *p, struct nfs_readres *res) { - int status; + struct iovec *iov = req->rq_rvec; + int status, count, ocount, recvd, hdrlen; - if ((status = ntohl(*p++))) + status = ntohl(*p++); + p = xdr_decode_post_op_attr(p, res->fattr); + + if (status != 0) return -nfs_stat_to_errno(status); - res->tsize = ntohl(*p++); - res->bsize = ntohl(*p++); - res->blocks = ntohl(*p++); - res->bfree = ntohl(*p++); - res->bavail = ntohl(*p++); - return 0; + + /* Decode reply could and EOF flag. NFSv3 is somewhat redundant + * in that it puts the count both in the res struct and in the + * opaque data count. */ + count = ntohl(*p++); + res->eof = ntohl(*p++); + ocount = ntohl(*p++); + + if (ocount != count) { + printk(KERN_WARNING "NFS: READ count doesn't match RPC opaque count.\n"); + return -errno_NFSERR_IO; + } + + hdrlen = (u8 *) p - (u8 *) iov->iov_base; + if (iov->iov_len > hdrlen) { + dprintk("NFS: READ header is short. iovec will be shifted.\n"); + xdr_shift_iovec(iov, req->rq_rnr, iov->iov_len - hdrlen); + } + + recvd = req->rq_rlen - hdrlen; + if (count > recvd) { + printk(KERN_WARNING "NFS: server cheating in read reply: " + "count %d > recvd %d\n", count, recvd); + count = recvd; + } + + if (count < res->count) { + xdr_zero_iovec(iov+1, req->rq_rnr-2, res->count - count); + res->count = count; + } + + return count; } /* - * We need to translate between nfs status return values and - * the local errno values which may not be the same. + * Decode WRITE response */ -static 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_NAMETOOLONG, ENAMETOOLONG }, - { NFSERR_NOTEMPTY, ENOTEMPTY }, - { NFSERR_DQUOT, EDQUOT }, - { NFSERR_STALE, ESTALE }, -#ifdef EWFLUSH - { NFSERR_WFLUSH, EWFLUSH }, -#endif - { -1, EIO } -}; +static int +nfs3_xdr_writeres(struct rpc_rqst *req, u32 *p, struct nfs_writeres *res) +{ + int status; + + status = ntohl(*p++); + p = xdr_decode_wcc_data(p, res->fattr); + if (status != 0) + return -nfs_stat_to_errno(status); + + res->count = ntohl(*p++); + res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); + res->verf->verifier[0] = *p++; + res->verf->verifier[1] = *p++; + + return res->count; +} + +/* + * Decode a CREATE response + */ static int -nfs_stat_to_errno(int stat) +nfs3_xdr_createres(struct rpc_rqst *req, u32 *p, struct nfs3_diropres *res) { - int i; + int status; - for (i = 0; nfs_errtbl[i].stat != -1; i++) { - if (nfs_errtbl[i].stat == stat) - return nfs_errtbl[i].errno; + status = ntohl(*p++); + if (status == 0) { + if (*p++) { + if (!(p = xdr_decode_fhandle(p, res->fh))) + return -errno_NFSERR_IO; + p = xdr_decode_post_op_attr(p, res->fattr); + } else { + memset(res->fh, 0, sizeof(*res->fh)); + /* Do decode post_op_attr but set it to NULL */ + p = xdr_decode_post_op_attr(p, res->fattr); + res->fattr->valid = 0; + } + } else { + status = -nfs_stat_to_errno(status); } - printk("nfs_stat_to_errno: bad nfs status return value: %d\n", stat); - return nfs_errtbl[i].errno; + p = xdr_decode_wcc_data(p, res->dir_attr); + return status; } -#ifndef MAX -# define MAX(a, b) (((a) > (b))? (a) : (b)) -#endif +/* + * Decode RENAME reply + */ +static int +nfs3_xdr_renameres(struct rpc_rqst *req, u32 *p, struct nfs3_renameres *res) +{ + int status; -#define PROC(proc, argtype, restype) \ - { "nfs_" #proc, \ - (kxdrproc_t) nfs_xdr_##argtype, \ - (kxdrproc_t) nfs_xdr_##restype, \ - MAX(NFS_##argtype##_sz,NFS_##restype##_sz) << 2 \ - } + if ((status = ntohl(*p++)) != 0) + status = -nfs_stat_to_errno(status); + p = xdr_decode_wcc_data(p, res->fromattr); + p = xdr_decode_wcc_data(p, res->toattr); + return status; +} -static struct rpc_procinfo nfs_procedures[18] = { - PROC(null, enc_void, dec_void), - PROC(getattr, fhandle, attrstat), - PROC(setattr, sattrargs, attrstat), - PROC(root, enc_void, dec_void), - PROC(lookup, diropargs, diropres), - PROC(readlink, fhandle, readlinkres), - PROC(read, readargs, readres), - PROC(writecache, enc_void, dec_void), - PROC(write, writeargs, attrstat), - PROC(create, createargs, diropres), - PROC(remove, diropargs, stat), - PROC(rename, renameargs, stat), - PROC(link, linkargs, stat), - PROC(symlink, symlinkargs, stat), - PROC(mkdir, createargs, diropres), - PROC(rmdir, diropargs, stat), - PROC(readdir, readdirargs, readdirres), - PROC(statfs, fhandle, statfsres), -}; +/* + * Decode LINK reply + */ +static int +nfs3_xdr_linkres(struct rpc_rqst *req, u32 *p, struct nfs3_linkres *res) +{ + int status; -static struct rpc_version nfs_version2 = { - 2, - sizeof(nfs_procedures)/sizeof(nfs_procedures[0]), - nfs_procedures -}; + if ((status = ntohl(*p++)) != 0) + status = -nfs_stat_to_errno(status); + p = xdr_decode_post_op_attr(p, res->fattr); + p = xdr_decode_wcc_data(p, res->dir_attr); + return status; +} -static struct rpc_version * nfs_version[] = { - NULL, - NULL, - &nfs_version2 -}; +/* + * Decode FSSTAT reply + */ +static int +nfs3_xdr_fsstatres(struct rpc_rqst *req, u32 *p, struct nfs_fsinfo *res) +{ + struct nfs_fattr dummy; + int status; -struct rpc_program nfs_program = { - "nfs", - NFS_PROGRAM, - sizeof(nfs_version) / sizeof(nfs_version[0]), - nfs_version, - &nfs_rpcstat, -}; + status = ntohl(*p++); + + p = xdr_decode_post_op_attr(p, &dummy); + if (status != 0) + return -nfs_stat_to_errno(status); + + p = xdr_decode_hyper(p, &res->tbytes); + p = xdr_decode_hyper(p, &res->fbytes); + p = xdr_decode_hyper(p, &res->abytes); + p = xdr_decode_hyper(p, &res->tfiles); + p = xdr_decode_hyper(p, &res->ffiles); + p = xdr_decode_hyper(p, &res->afiles); + + /* ignore invarsec */ + return 0; +} + +/* + * Decode FSINFO reply + */ +static int +nfs3_xdr_fsinfores(struct rpc_rqst *req, u32 *p, struct nfs_fsinfo *res) +{ + struct nfs_fattr dummy; + int status; + + status = ntohl(*p++); + + p = xdr_decode_post_op_attr(p, &dummy); + if (status != 0) + return -nfs_stat_to_errno(status); + + res->rtmax = ntohl(*p++); + res->rtpref = ntohl(*p++); + res->rtmult = ntohl(*p++); + res->wtmax = ntohl(*p++); + res->wtpref = ntohl(*p++); + res->wtmult = ntohl(*p++); + res->dtpref = ntohl(*p++); + p = xdr_decode_hyper(p, &res->maxfilesize); + + /* ignore time_delta and properties */ + return 0; +} + +/* + * Decode PATHCONF reply + */ +static int +nfs3_xdr_pathconfres(struct rpc_rqst *req, u32 *p, struct nfs_fsinfo *res) +{ + struct nfs_fattr dummy; + int status; + + status = ntohl(*p++); + + p = xdr_decode_post_op_attr(p, &dummy); + if (status != 0) + return -nfs_stat_to_errno(status); + res->linkmax = ntohl(*p++); + res->namelen = ntohl(*p++); + + /* ignore remaining fields */ + return 0; +} /* - * RPC stats support + * Decode COMMIT reply */ static int -nfs_get_info(char *buffer, char **start, off_t offset, int length, int dummy) +nfs3_xdr_commitres(struct rpc_rqst *req, u32 *p, struct nfs_writeres *res) { - return rpcstat_get_info(&nfs_rpcstat, buffer, start, offset, length); + int status; + + status = ntohl(*p++); + p = xdr_decode_wcc_data(p, res->fattr); + if (status != 0) + return -nfs_stat_to_errno(status); + + res->verf->verifier[0] = *p++; + res->verf->verifier[1] = *p++; + return 0; } -static struct proc_dir_entry proc_nfsclnt = { - 0, 3, "nfs", - S_IFREG | S_IRUGO, 1, 0, 0, - 6, NULL, - nfs_get_info +#ifndef MAX +# define MAX(a, b) (((a) > (b))? (a) : (b)) +#endif + +#define PROC(proc, argtype, restype) \ + { "nfs3_" #proc, \ + (kxdrproc_t) nfs3_xdr_##argtype, \ + (kxdrproc_t) nfs3_xdr_##restype, \ + MAX(NFS3_##argtype##_sz,NFS3_##restype##_sz) << 2, \ + 0 \ + } + +static struct rpc_procinfo nfs3_procedures[22] = { + PROC(null, enc_void, dec_void), + PROC(getattr, fhandle, attrstat), + PROC(setattr, sattrargs, wccstat), + PROC(lookup, diropargs, lookupres), + PROC(access, accessargs, accessres), + PROC(readlink, readlinkargs, readlinkres), + PROC(read, readargs, readres), + PROC(write, writeargs, writeres), + PROC(create, createargs, createres), + PROC(mkdir, mkdirargs, createres), + PROC(symlink, symlinkargs, createres), + PROC(mknod, mknodargs, createres), + PROC(remove, diropargs, wccstat), + PROC(rmdir, diropargs, wccstat), + PROC(rename, renameargs, renameres), + PROC(link, linkargs, linkres), + PROC(readdir, readdirargs, readdirres), + PROC(readdirplus, readdirargs, readdirres), + PROC(fsstat, fhandle, fsstatres), + PROC(fsinfo, fhandle, fsinfores), + PROC(pathconf, fhandle, pathconfres), + PROC(commit, commitargs, commitres), }; -struct rpc_stat nfs_rpcstat = { - NULL, /* next */ - &proc_nfsclnt, /* /proc/net directory entry */ - &nfs_program, /* RPC program */ +struct rpc_version nfs_version3 = { + 3, + sizeof(nfs3_procedures)/sizeof(nfs3_procedures[0]), + nfs3_procedures }; + |