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40116ebd09
De-duplicate some code that is used by both READDIR and READDIRPLUS to build the dirlist in the Reply. Because this code is not related to decoding READ arguments, it is moved to a more appropriate spot. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
972 lines
25 KiB
C
972 lines
25 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Process version 3 NFS requests.
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*
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* Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de>
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*/
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#include <linux/fs.h>
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#include <linux/ext2_fs.h>
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#include <linux/magic.h>
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#include "cache.h"
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#include "xdr3.h"
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#include "vfs.h"
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#define NFSDDBG_FACILITY NFSDDBG_PROC
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static int nfs3_ftypes[] = {
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0, /* NF3NON */
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S_IFREG, /* NF3REG */
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S_IFDIR, /* NF3DIR */
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S_IFBLK, /* NF3BLK */
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S_IFCHR, /* NF3CHR */
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S_IFLNK, /* NF3LNK */
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S_IFSOCK, /* NF3SOCK */
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S_IFIFO, /* NF3FIFO */
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};
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/*
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* NULL call.
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*/
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static __be32
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nfsd3_proc_null(struct svc_rqst *rqstp)
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{
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return rpc_success;
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}
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/*
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* Get a file's attributes
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*/
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static __be32
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nfsd3_proc_getattr(struct svc_rqst *rqstp)
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{
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struct nfsd_fhandle *argp = rqstp->rq_argp;
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struct nfsd3_attrstat *resp = rqstp->rq_resp;
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dprintk("nfsd: GETATTR(3) %s\n",
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SVCFH_fmt(&argp->fh));
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fh_copy(&resp->fh, &argp->fh);
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resp->status = fh_verify(rqstp, &resp->fh, 0,
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NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
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if (resp->status != nfs_ok)
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goto out;
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resp->status = fh_getattr(&resp->fh, &resp->stat);
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out:
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return rpc_success;
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}
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/*
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* Set a file's attributes
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*/
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static __be32
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nfsd3_proc_setattr(struct svc_rqst *rqstp)
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{
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struct nfsd3_sattrargs *argp = rqstp->rq_argp;
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struct nfsd3_attrstat *resp = rqstp->rq_resp;
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dprintk("nfsd: SETATTR(3) %s\n",
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SVCFH_fmt(&argp->fh));
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fh_copy(&resp->fh, &argp->fh);
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resp->status = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,
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argp->check_guard, argp->guardtime);
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return rpc_success;
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}
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/*
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* Look up a path name component
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*/
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static __be32
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nfsd3_proc_lookup(struct svc_rqst *rqstp)
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{
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struct nfsd3_diropargs *argp = rqstp->rq_argp;
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struct nfsd3_diropres *resp = rqstp->rq_resp;
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dprintk("nfsd: LOOKUP(3) %s %.*s\n",
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SVCFH_fmt(&argp->fh),
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argp->len,
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argp->name);
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fh_copy(&resp->dirfh, &argp->fh);
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fh_init(&resp->fh, NFS3_FHSIZE);
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resp->status = nfsd_lookup(rqstp, &resp->dirfh,
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argp->name, argp->len,
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&resp->fh);
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return rpc_success;
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}
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/*
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* Check file access
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*/
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static __be32
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nfsd3_proc_access(struct svc_rqst *rqstp)
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{
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struct nfsd3_accessargs *argp = rqstp->rq_argp;
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struct nfsd3_accessres *resp = rqstp->rq_resp;
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dprintk("nfsd: ACCESS(3) %s 0x%x\n",
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SVCFH_fmt(&argp->fh),
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argp->access);
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fh_copy(&resp->fh, &argp->fh);
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resp->access = argp->access;
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resp->status = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
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return rpc_success;
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}
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/*
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* Read a symlink.
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*/
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static __be32
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nfsd3_proc_readlink(struct svc_rqst *rqstp)
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{
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struct nfsd_fhandle *argp = rqstp->rq_argp;
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struct nfsd3_readlinkres *resp = rqstp->rq_resp;
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char *buffer = page_address(*(rqstp->rq_next_page++));
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dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh));
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/* Read the symlink. */
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fh_copy(&resp->fh, &argp->fh);
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resp->len = NFS3_MAXPATHLEN;
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resp->status = nfsd_readlink(rqstp, &resp->fh, buffer, &resp->len);
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return rpc_success;
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}
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/*
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* Read a portion of a file.
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*/
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static __be32
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nfsd3_proc_read(struct svc_rqst *rqstp)
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{
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struct nfsd3_readargs *argp = rqstp->rq_argp;
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struct nfsd3_readres *resp = rqstp->rq_resp;
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u32 max_blocksize = svc_max_payload(rqstp);
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unsigned int len;
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int v;
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argp->count = min_t(u32, argp->count, max_blocksize);
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dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n",
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SVCFH_fmt(&argp->fh),
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(unsigned long) argp->count,
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(unsigned long long) argp->offset);
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v = 0;
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len = argp->count;
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while (len > 0) {
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struct page *page = *(rqstp->rq_next_page++);
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rqstp->rq_vec[v].iov_base = page_address(page);
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rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
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len -= rqstp->rq_vec[v].iov_len;
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v++;
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}
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/* Obtain buffer pointer for payload.
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* 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
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* + 1 (xdr opaque byte count) = 26
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*/
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resp->count = argp->count;
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svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4);
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fh_copy(&resp->fh, &argp->fh);
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resp->status = nfsd_read(rqstp, &resp->fh, argp->offset,
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rqstp->rq_vec, v, &resp->count, &resp->eof);
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return rpc_success;
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}
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/*
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* Write data to a file
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*/
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static __be32
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nfsd3_proc_write(struct svc_rqst *rqstp)
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{
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struct nfsd3_writeargs *argp = rqstp->rq_argp;
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struct nfsd3_writeres *resp = rqstp->rq_resp;
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unsigned long cnt = argp->len;
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unsigned int nvecs;
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dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n",
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SVCFH_fmt(&argp->fh),
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argp->len,
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(unsigned long long) argp->offset,
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argp->stable? " stable" : "");
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fh_copy(&resp->fh, &argp->fh);
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resp->committed = argp->stable;
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nvecs = svc_fill_write_vector(rqstp, rqstp->rq_arg.pages,
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&argp->first, cnt);
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if (!nvecs) {
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resp->status = nfserr_io;
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goto out;
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}
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resp->status = nfsd_write(rqstp, &resp->fh, argp->offset,
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rqstp->rq_vec, nvecs, &cnt,
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resp->committed, resp->verf);
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resp->count = cnt;
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out:
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return rpc_success;
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}
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/*
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* With NFSv3, CREATE processing is a lot easier than with NFSv2.
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* At least in theory; we'll see how it fares in practice when the
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* first reports about SunOS compatibility problems start to pour in...
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*/
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static __be32
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nfsd3_proc_create(struct svc_rqst *rqstp)
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{
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struct nfsd3_createargs *argp = rqstp->rq_argp;
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struct nfsd3_diropres *resp = rqstp->rq_resp;
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svc_fh *dirfhp, *newfhp = NULL;
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struct iattr *attr;
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dprintk("nfsd: CREATE(3) %s %.*s\n",
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SVCFH_fmt(&argp->fh),
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argp->len,
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argp->name);
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dirfhp = fh_copy(&resp->dirfh, &argp->fh);
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newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
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attr = &argp->attrs;
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/* Unfudge the mode bits */
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attr->ia_mode &= ~S_IFMT;
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if (!(attr->ia_valid & ATTR_MODE)) {
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attr->ia_valid |= ATTR_MODE;
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attr->ia_mode = S_IFREG;
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} else {
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attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG;
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}
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/* Now create the file and set attributes */
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resp->status = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len,
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attr, newfhp, argp->createmode,
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(u32 *)argp->verf, NULL, NULL);
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return rpc_success;
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}
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/*
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* Make directory. This operation is not idempotent.
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*/
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static __be32
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nfsd3_proc_mkdir(struct svc_rqst *rqstp)
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{
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struct nfsd3_createargs *argp = rqstp->rq_argp;
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struct nfsd3_diropres *resp = rqstp->rq_resp;
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dprintk("nfsd: MKDIR(3) %s %.*s\n",
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SVCFH_fmt(&argp->fh),
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argp->len,
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argp->name);
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argp->attrs.ia_valid &= ~ATTR_SIZE;
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fh_copy(&resp->dirfh, &argp->fh);
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fh_init(&resp->fh, NFS3_FHSIZE);
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resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
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&argp->attrs, S_IFDIR, 0, &resp->fh);
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fh_unlock(&resp->dirfh);
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return rpc_success;
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}
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static __be32
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nfsd3_proc_symlink(struct svc_rqst *rqstp)
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{
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struct nfsd3_symlinkargs *argp = rqstp->rq_argp;
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struct nfsd3_diropres *resp = rqstp->rq_resp;
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if (argp->tlen == 0) {
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resp->status = nfserr_inval;
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goto out;
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}
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if (argp->tlen > NFS3_MAXPATHLEN) {
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resp->status = nfserr_nametoolong;
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goto out;
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}
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argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first,
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page_address(rqstp->rq_arg.pages[0]),
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argp->tlen);
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if (IS_ERR(argp->tname)) {
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resp->status = nfserrno(PTR_ERR(argp->tname));
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goto out;
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}
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dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n",
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SVCFH_fmt(&argp->ffh),
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argp->flen, argp->fname,
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argp->tlen, argp->tname);
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fh_copy(&resp->dirfh, &argp->ffh);
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fh_init(&resp->fh, NFS3_FHSIZE);
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resp->status = nfsd_symlink(rqstp, &resp->dirfh, argp->fname,
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argp->flen, argp->tname, &resp->fh);
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kfree(argp->tname);
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out:
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return rpc_success;
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}
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/*
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* Make socket/fifo/device.
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*/
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static __be32
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nfsd3_proc_mknod(struct svc_rqst *rqstp)
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{
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struct nfsd3_mknodargs *argp = rqstp->rq_argp;
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struct nfsd3_diropres *resp = rqstp->rq_resp;
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int type;
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dev_t rdev = 0;
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dprintk("nfsd: MKNOD(3) %s %.*s\n",
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SVCFH_fmt(&argp->fh),
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argp->len,
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argp->name);
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fh_copy(&resp->dirfh, &argp->fh);
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fh_init(&resp->fh, NFS3_FHSIZE);
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if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
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rdev = MKDEV(argp->major, argp->minor);
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if (MAJOR(rdev) != argp->major ||
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MINOR(rdev) != argp->minor) {
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resp->status = nfserr_inval;
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goto out;
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}
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} else if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) {
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resp->status = nfserr_badtype;
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goto out;
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}
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type = nfs3_ftypes[argp->ftype];
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resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
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&argp->attrs, type, rdev, &resp->fh);
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fh_unlock(&resp->dirfh);
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out:
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return rpc_success;
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}
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/*
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* Remove file/fifo/socket etc.
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*/
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static __be32
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nfsd3_proc_remove(struct svc_rqst *rqstp)
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{
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struct nfsd3_diropargs *argp = rqstp->rq_argp;
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struct nfsd3_attrstat *resp = rqstp->rq_resp;
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dprintk("nfsd: REMOVE(3) %s %.*s\n",
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SVCFH_fmt(&argp->fh),
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argp->len,
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argp->name);
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/* Unlink. -S_IFDIR means file must not be a directory */
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fh_copy(&resp->fh, &argp->fh);
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resp->status = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR,
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argp->name, argp->len);
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fh_unlock(&resp->fh);
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return rpc_success;
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}
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/*
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* Remove a directory
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*/
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static __be32
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nfsd3_proc_rmdir(struct svc_rqst *rqstp)
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{
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struct nfsd3_diropargs *argp = rqstp->rq_argp;
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struct nfsd3_attrstat *resp = rqstp->rq_resp;
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dprintk("nfsd: RMDIR(3) %s %.*s\n",
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SVCFH_fmt(&argp->fh),
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argp->len,
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argp->name);
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fh_copy(&resp->fh, &argp->fh);
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resp->status = nfsd_unlink(rqstp, &resp->fh, S_IFDIR,
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argp->name, argp->len);
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fh_unlock(&resp->fh);
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return rpc_success;
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}
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static __be32
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nfsd3_proc_rename(struct svc_rqst *rqstp)
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{
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struct nfsd3_renameargs *argp = rqstp->rq_argp;
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struct nfsd3_renameres *resp = rqstp->rq_resp;
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dprintk("nfsd: RENAME(3) %s %.*s ->\n",
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SVCFH_fmt(&argp->ffh),
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argp->flen,
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argp->fname);
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dprintk("nfsd: -> %s %.*s\n",
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SVCFH_fmt(&argp->tfh),
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argp->tlen,
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argp->tname);
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fh_copy(&resp->ffh, &argp->ffh);
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fh_copy(&resp->tfh, &argp->tfh);
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resp->status = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
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&resp->tfh, argp->tname, argp->tlen);
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return rpc_success;
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}
|
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|
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static __be32
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nfsd3_proc_link(struct svc_rqst *rqstp)
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{
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struct nfsd3_linkargs *argp = rqstp->rq_argp;
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struct nfsd3_linkres *resp = rqstp->rq_resp;
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dprintk("nfsd: LINK(3) %s ->\n",
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SVCFH_fmt(&argp->ffh));
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dprintk("nfsd: -> %s %.*s\n",
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SVCFH_fmt(&argp->tfh),
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argp->tlen,
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argp->tname);
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fh_copy(&resp->fh, &argp->ffh);
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fh_copy(&resp->tfh, &argp->tfh);
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resp->status = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
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&resp->fh);
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return rpc_success;
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}
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|
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static void nfsd3_init_dirlist_pages(struct svc_rqst *rqstp,
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struct nfsd3_readdirres *resp,
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int count)
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{
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count = min_t(u32, count, svc_max_payload(rqstp));
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|
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/* Convert byte count to number of words (i.e. >> 2),
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* and reserve room for the NULL ptr & eof flag (-2 words) */
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resp->buflen = (count >> 2) - 2;
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resp->buffer = page_address(*rqstp->rq_next_page);
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while (count > 0) {
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rqstp->rq_next_page++;
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count -= PAGE_SIZE;
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}
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}
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|
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/*
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* Read a portion of a directory.
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*/
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static __be32
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nfsd3_proc_readdir(struct svc_rqst *rqstp)
|
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{
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struct nfsd3_readdirargs *argp = rqstp->rq_argp;
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struct nfsd3_readdirres *resp = rqstp->rq_resp;
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int count = 0;
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loff_t offset;
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struct page **p;
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caddr_t page_addr = NULL;
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dprintk("nfsd: READDIR(3) %s %d bytes at %d\n",
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SVCFH_fmt(&argp->fh),
|
|
argp->count, (u32) argp->cookie);
|
|
|
|
nfsd3_init_dirlist_pages(rqstp, resp, argp->count);
|
|
|
|
/* Read directory and encode entries on the fly */
|
|
fh_copy(&resp->fh, &argp->fh);
|
|
|
|
resp->common.err = nfs_ok;
|
|
resp->rqstp = rqstp;
|
|
offset = argp->cookie;
|
|
|
|
resp->status = nfsd_readdir(rqstp, &resp->fh, &offset,
|
|
&resp->common, nfs3svc_encode_entry);
|
|
memcpy(resp->verf, argp->verf, 8);
|
|
count = 0;
|
|
for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) {
|
|
page_addr = page_address(*p);
|
|
|
|
if (((caddr_t)resp->buffer >= page_addr) &&
|
|
((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) {
|
|
count += (caddr_t)resp->buffer - page_addr;
|
|
break;
|
|
}
|
|
count += PAGE_SIZE;
|
|
}
|
|
resp->count = count >> 2;
|
|
if (resp->offset) {
|
|
if (unlikely(resp->offset1)) {
|
|
/* we ended up with offset on a page boundary */
|
|
*resp->offset = htonl(offset >> 32);
|
|
*resp->offset1 = htonl(offset & 0xffffffff);
|
|
resp->offset1 = NULL;
|
|
} else {
|
|
xdr_encode_hyper(resp->offset, offset);
|
|
}
|
|
resp->offset = NULL;
|
|
}
|
|
|
|
return rpc_success;
|
|
}
|
|
|
|
/*
|
|
* Read a portion of a directory, including file handles and attrs.
|
|
* For now, we choose to ignore the dircount parameter.
|
|
*/
|
|
static __be32
|
|
nfsd3_proc_readdirplus(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd3_readdirargs *argp = rqstp->rq_argp;
|
|
struct nfsd3_readdirres *resp = rqstp->rq_resp;
|
|
int count = 0;
|
|
loff_t offset;
|
|
struct page **p;
|
|
caddr_t page_addr = NULL;
|
|
|
|
dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n",
|
|
SVCFH_fmt(&argp->fh),
|
|
argp->count, (u32) argp->cookie);
|
|
|
|
nfsd3_init_dirlist_pages(rqstp, resp, argp->count);
|
|
|
|
/* Read directory and encode entries on the fly */
|
|
fh_copy(&resp->fh, &argp->fh);
|
|
|
|
resp->common.err = nfs_ok;
|
|
resp->rqstp = rqstp;
|
|
offset = argp->cookie;
|
|
|
|
resp->status = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP);
|
|
if (resp->status != nfs_ok)
|
|
goto out;
|
|
|
|
if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS) {
|
|
resp->status = nfserr_notsupp;
|
|
goto out;
|
|
}
|
|
|
|
resp->status = nfsd_readdir(rqstp, &resp->fh, &offset,
|
|
&resp->common, nfs3svc_encode_entry_plus);
|
|
memcpy(resp->verf, argp->verf, 8);
|
|
for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) {
|
|
page_addr = page_address(*p);
|
|
|
|
if (((caddr_t)resp->buffer >= page_addr) &&
|
|
((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) {
|
|
count += (caddr_t)resp->buffer - page_addr;
|
|
break;
|
|
}
|
|
count += PAGE_SIZE;
|
|
}
|
|
resp->count = count >> 2;
|
|
if (resp->offset) {
|
|
if (unlikely(resp->offset1)) {
|
|
/* we ended up with offset on a page boundary */
|
|
*resp->offset = htonl(offset >> 32);
|
|
*resp->offset1 = htonl(offset & 0xffffffff);
|
|
resp->offset1 = NULL;
|
|
} else {
|
|
xdr_encode_hyper(resp->offset, offset);
|
|
}
|
|
resp->offset = NULL;
|
|
}
|
|
|
|
out:
|
|
return rpc_success;
|
|
}
|
|
|
|
/*
|
|
* Get file system stats
|
|
*/
|
|
static __be32
|
|
nfsd3_proc_fsstat(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd_fhandle *argp = rqstp->rq_argp;
|
|
struct nfsd3_fsstatres *resp = rqstp->rq_resp;
|
|
|
|
dprintk("nfsd: FSSTAT(3) %s\n",
|
|
SVCFH_fmt(&argp->fh));
|
|
|
|
resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
|
|
fh_put(&argp->fh);
|
|
return rpc_success;
|
|
}
|
|
|
|
/*
|
|
* Get file system info
|
|
*/
|
|
static __be32
|
|
nfsd3_proc_fsinfo(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd_fhandle *argp = rqstp->rq_argp;
|
|
struct nfsd3_fsinfores *resp = rqstp->rq_resp;
|
|
u32 max_blocksize = svc_max_payload(rqstp);
|
|
|
|
dprintk("nfsd: FSINFO(3) %s\n",
|
|
SVCFH_fmt(&argp->fh));
|
|
|
|
resp->f_rtmax = max_blocksize;
|
|
resp->f_rtpref = max_blocksize;
|
|
resp->f_rtmult = PAGE_SIZE;
|
|
resp->f_wtmax = max_blocksize;
|
|
resp->f_wtpref = max_blocksize;
|
|
resp->f_wtmult = PAGE_SIZE;
|
|
resp->f_dtpref = max_blocksize;
|
|
resp->f_maxfilesize = ~(u32) 0;
|
|
resp->f_properties = NFS3_FSF_DEFAULT;
|
|
|
|
resp->status = fh_verify(rqstp, &argp->fh, 0,
|
|
NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
|
|
|
|
/* Check special features of the file system. May request
|
|
* different read/write sizes for file systems known to have
|
|
* problems with large blocks */
|
|
if (resp->status == nfs_ok) {
|
|
struct super_block *sb = argp->fh.fh_dentry->d_sb;
|
|
|
|
/* Note that we don't care for remote fs's here */
|
|
if (sb->s_magic == MSDOS_SUPER_MAGIC) {
|
|
resp->f_properties = NFS3_FSF_BILLYBOY;
|
|
}
|
|
resp->f_maxfilesize = sb->s_maxbytes;
|
|
}
|
|
|
|
fh_put(&argp->fh);
|
|
return rpc_success;
|
|
}
|
|
|
|
/*
|
|
* Get pathconf info for the specified file
|
|
*/
|
|
static __be32
|
|
nfsd3_proc_pathconf(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd_fhandle *argp = rqstp->rq_argp;
|
|
struct nfsd3_pathconfres *resp = rqstp->rq_resp;
|
|
|
|
dprintk("nfsd: PATHCONF(3) %s\n",
|
|
SVCFH_fmt(&argp->fh));
|
|
|
|
/* Set default pathconf */
|
|
resp->p_link_max = 255; /* at least */
|
|
resp->p_name_max = 255; /* at least */
|
|
resp->p_no_trunc = 0;
|
|
resp->p_chown_restricted = 1;
|
|
resp->p_case_insensitive = 0;
|
|
resp->p_case_preserving = 1;
|
|
|
|
resp->status = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
|
|
|
|
if (resp->status == nfs_ok) {
|
|
struct super_block *sb = argp->fh.fh_dentry->d_sb;
|
|
|
|
/* Note that we don't care for remote fs's here */
|
|
switch (sb->s_magic) {
|
|
case EXT2_SUPER_MAGIC:
|
|
resp->p_link_max = EXT2_LINK_MAX;
|
|
resp->p_name_max = EXT2_NAME_LEN;
|
|
break;
|
|
case MSDOS_SUPER_MAGIC:
|
|
resp->p_case_insensitive = 1;
|
|
resp->p_case_preserving = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
fh_put(&argp->fh);
|
|
return rpc_success;
|
|
}
|
|
|
|
/*
|
|
* Commit a file (range) to stable storage.
|
|
*/
|
|
static __be32
|
|
nfsd3_proc_commit(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd3_commitargs *argp = rqstp->rq_argp;
|
|
struct nfsd3_commitres *resp = rqstp->rq_resp;
|
|
|
|
dprintk("nfsd: COMMIT(3) %s %u@%Lu\n",
|
|
SVCFH_fmt(&argp->fh),
|
|
argp->count,
|
|
(unsigned long long) argp->offset);
|
|
|
|
if (argp->offset > NFS_OFFSET_MAX) {
|
|
resp->status = nfserr_inval;
|
|
goto out;
|
|
}
|
|
|
|
fh_copy(&resp->fh, &argp->fh);
|
|
resp->status = nfsd_commit(rqstp, &resp->fh, argp->offset,
|
|
argp->count, resp->verf);
|
|
out:
|
|
return rpc_success;
|
|
}
|
|
|
|
|
|
/*
|
|
* NFSv3 Server procedures.
|
|
* Only the results of non-idempotent operations are cached.
|
|
*/
|
|
#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
|
|
#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
|
|
#define nfsd3_mkdirargs nfsd3_createargs
|
|
#define nfsd3_readdirplusargs nfsd3_readdirargs
|
|
#define nfsd3_fhandleargs nfsd_fhandle
|
|
#define nfsd3_attrstatres nfsd3_attrstat
|
|
#define nfsd3_wccstatres nfsd3_attrstat
|
|
#define nfsd3_createres nfsd3_diropres
|
|
|
|
#define ST 1 /* status*/
|
|
#define FH 17 /* filehandle with length */
|
|
#define AT 21 /* attributes */
|
|
#define pAT (1+AT) /* post attributes - conditional */
|
|
#define WC (7+pAT) /* WCC attributes */
|
|
|
|
static const struct svc_procedure nfsd_procedures3[22] = {
|
|
[NFS3PROC_NULL] = {
|
|
.pc_func = nfsd3_proc_null,
|
|
.pc_decode = nfssvc_decode_voidarg,
|
|
.pc_encode = nfssvc_encode_voidres,
|
|
.pc_argsize = sizeof(struct nfsd_voidargs),
|
|
.pc_ressize = sizeof(struct nfsd_voidres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST,
|
|
.pc_name = "NULL",
|
|
},
|
|
[NFS3PROC_GETATTR] = {
|
|
.pc_func = nfsd3_proc_getattr,
|
|
.pc_decode = nfs3svc_decode_fhandleargs,
|
|
.pc_encode = nfs3svc_encode_attrstatres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_fhandle),
|
|
.pc_ressize = sizeof(struct nfsd3_attrstatres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+AT,
|
|
.pc_name = "GETATTR",
|
|
},
|
|
[NFS3PROC_SETATTR] = {
|
|
.pc_func = nfsd3_proc_setattr,
|
|
.pc_decode = nfs3svc_decode_sattrargs,
|
|
.pc_encode = nfs3svc_encode_wccstatres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_sattrargs),
|
|
.pc_ressize = sizeof(struct nfsd3_wccstatres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+WC,
|
|
.pc_name = "SETATTR",
|
|
},
|
|
[NFS3PROC_LOOKUP] = {
|
|
.pc_func = nfsd3_proc_lookup,
|
|
.pc_decode = nfs3svc_decode_diropargs,
|
|
.pc_encode = nfs3svc_encode_diropres,
|
|
.pc_release = nfs3svc_release_fhandle2,
|
|
.pc_argsize = sizeof(struct nfsd3_diropargs),
|
|
.pc_ressize = sizeof(struct nfsd3_diropres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+FH+pAT+pAT,
|
|
.pc_name = "LOOKUP",
|
|
},
|
|
[NFS3PROC_ACCESS] = {
|
|
.pc_func = nfsd3_proc_access,
|
|
.pc_decode = nfs3svc_decode_accessargs,
|
|
.pc_encode = nfs3svc_encode_accessres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_accessargs),
|
|
.pc_ressize = sizeof(struct nfsd3_accessres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+pAT+1,
|
|
.pc_name = "ACCESS",
|
|
},
|
|
[NFS3PROC_READLINK] = {
|
|
.pc_func = nfsd3_proc_readlink,
|
|
.pc_decode = nfs3svc_decode_fhandleargs,
|
|
.pc_encode = nfs3svc_encode_readlinkres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_fhandle),
|
|
.pc_ressize = sizeof(struct nfsd3_readlinkres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4,
|
|
.pc_name = "READLINK",
|
|
},
|
|
[NFS3PROC_READ] = {
|
|
.pc_func = nfsd3_proc_read,
|
|
.pc_decode = nfs3svc_decode_readargs,
|
|
.pc_encode = nfs3svc_encode_readres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_readargs),
|
|
.pc_ressize = sizeof(struct nfsd3_readres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4,
|
|
.pc_name = "READ",
|
|
},
|
|
[NFS3PROC_WRITE] = {
|
|
.pc_func = nfsd3_proc_write,
|
|
.pc_decode = nfs3svc_decode_writeargs,
|
|
.pc_encode = nfs3svc_encode_writeres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_writeargs),
|
|
.pc_ressize = sizeof(struct nfsd3_writeres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+WC+4,
|
|
.pc_name = "WRITE",
|
|
},
|
|
[NFS3PROC_CREATE] = {
|
|
.pc_func = nfsd3_proc_create,
|
|
.pc_decode = nfs3svc_decode_createargs,
|
|
.pc_encode = nfs3svc_encode_createres,
|
|
.pc_release = nfs3svc_release_fhandle2,
|
|
.pc_argsize = sizeof(struct nfsd3_createargs),
|
|
.pc_ressize = sizeof(struct nfsd3_createres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+(1+FH+pAT)+WC,
|
|
.pc_name = "CREATE",
|
|
},
|
|
[NFS3PROC_MKDIR] = {
|
|
.pc_func = nfsd3_proc_mkdir,
|
|
.pc_decode = nfs3svc_decode_mkdirargs,
|
|
.pc_encode = nfs3svc_encode_createres,
|
|
.pc_release = nfs3svc_release_fhandle2,
|
|
.pc_argsize = sizeof(struct nfsd3_mkdirargs),
|
|
.pc_ressize = sizeof(struct nfsd3_createres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+(1+FH+pAT)+WC,
|
|
.pc_name = "MKDIR",
|
|
},
|
|
[NFS3PROC_SYMLINK] = {
|
|
.pc_func = nfsd3_proc_symlink,
|
|
.pc_decode = nfs3svc_decode_symlinkargs,
|
|
.pc_encode = nfs3svc_encode_createres,
|
|
.pc_release = nfs3svc_release_fhandle2,
|
|
.pc_argsize = sizeof(struct nfsd3_symlinkargs),
|
|
.pc_ressize = sizeof(struct nfsd3_createres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+(1+FH+pAT)+WC,
|
|
.pc_name = "SYMLINK",
|
|
},
|
|
[NFS3PROC_MKNOD] = {
|
|
.pc_func = nfsd3_proc_mknod,
|
|
.pc_decode = nfs3svc_decode_mknodargs,
|
|
.pc_encode = nfs3svc_encode_createres,
|
|
.pc_release = nfs3svc_release_fhandle2,
|
|
.pc_argsize = sizeof(struct nfsd3_mknodargs),
|
|
.pc_ressize = sizeof(struct nfsd3_createres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+(1+FH+pAT)+WC,
|
|
.pc_name = "MKNOD",
|
|
},
|
|
[NFS3PROC_REMOVE] = {
|
|
.pc_func = nfsd3_proc_remove,
|
|
.pc_decode = nfs3svc_decode_diropargs,
|
|
.pc_encode = nfs3svc_encode_wccstatres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_diropargs),
|
|
.pc_ressize = sizeof(struct nfsd3_wccstatres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+WC,
|
|
.pc_name = "REMOVE",
|
|
},
|
|
[NFS3PROC_RMDIR] = {
|
|
.pc_func = nfsd3_proc_rmdir,
|
|
.pc_decode = nfs3svc_decode_diropargs,
|
|
.pc_encode = nfs3svc_encode_wccstatres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_diropargs),
|
|
.pc_ressize = sizeof(struct nfsd3_wccstatres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+WC,
|
|
.pc_name = "RMDIR",
|
|
},
|
|
[NFS3PROC_RENAME] = {
|
|
.pc_func = nfsd3_proc_rename,
|
|
.pc_decode = nfs3svc_decode_renameargs,
|
|
.pc_encode = nfs3svc_encode_renameres,
|
|
.pc_release = nfs3svc_release_fhandle2,
|
|
.pc_argsize = sizeof(struct nfsd3_renameargs),
|
|
.pc_ressize = sizeof(struct nfsd3_renameres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+WC+WC,
|
|
.pc_name = "RENAME",
|
|
},
|
|
[NFS3PROC_LINK] = {
|
|
.pc_func = nfsd3_proc_link,
|
|
.pc_decode = nfs3svc_decode_linkargs,
|
|
.pc_encode = nfs3svc_encode_linkres,
|
|
.pc_release = nfs3svc_release_fhandle2,
|
|
.pc_argsize = sizeof(struct nfsd3_linkargs),
|
|
.pc_ressize = sizeof(struct nfsd3_linkres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+pAT+WC,
|
|
.pc_name = "LINK",
|
|
},
|
|
[NFS3PROC_READDIR] = {
|
|
.pc_func = nfsd3_proc_readdir,
|
|
.pc_decode = nfs3svc_decode_readdirargs,
|
|
.pc_encode = nfs3svc_encode_readdirres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_readdirargs),
|
|
.pc_ressize = sizeof(struct nfsd3_readdirres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_name = "READDIR",
|
|
},
|
|
[NFS3PROC_READDIRPLUS] = {
|
|
.pc_func = nfsd3_proc_readdirplus,
|
|
.pc_decode = nfs3svc_decode_readdirplusargs,
|
|
.pc_encode = nfs3svc_encode_readdirres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_readdirplusargs),
|
|
.pc_ressize = sizeof(struct nfsd3_readdirres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_name = "READDIRPLUS",
|
|
},
|
|
[NFS3PROC_FSSTAT] = {
|
|
.pc_func = nfsd3_proc_fsstat,
|
|
.pc_decode = nfs3svc_decode_fhandleargs,
|
|
.pc_encode = nfs3svc_encode_fsstatres,
|
|
.pc_argsize = sizeof(struct nfsd3_fhandleargs),
|
|
.pc_ressize = sizeof(struct nfsd3_fsstatres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+pAT+2*6+1,
|
|
.pc_name = "FSSTAT",
|
|
},
|
|
[NFS3PROC_FSINFO] = {
|
|
.pc_func = nfsd3_proc_fsinfo,
|
|
.pc_decode = nfs3svc_decode_fhandleargs,
|
|
.pc_encode = nfs3svc_encode_fsinfores,
|
|
.pc_argsize = sizeof(struct nfsd3_fhandleargs),
|
|
.pc_ressize = sizeof(struct nfsd3_fsinfores),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+pAT+12,
|
|
.pc_name = "FSINFO",
|
|
},
|
|
[NFS3PROC_PATHCONF] = {
|
|
.pc_func = nfsd3_proc_pathconf,
|
|
.pc_decode = nfs3svc_decode_fhandleargs,
|
|
.pc_encode = nfs3svc_encode_pathconfres,
|
|
.pc_argsize = sizeof(struct nfsd3_fhandleargs),
|
|
.pc_ressize = sizeof(struct nfsd3_pathconfres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+pAT+6,
|
|
.pc_name = "PATHCONF",
|
|
},
|
|
[NFS3PROC_COMMIT] = {
|
|
.pc_func = nfsd3_proc_commit,
|
|
.pc_decode = nfs3svc_decode_commitargs,
|
|
.pc_encode = nfs3svc_encode_commitres,
|
|
.pc_release = nfs3svc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd3_commitargs),
|
|
.pc_ressize = sizeof(struct nfsd3_commitres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+WC+2,
|
|
.pc_name = "COMMIT",
|
|
},
|
|
};
|
|
|
|
static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures3)];
|
|
const struct svc_version nfsd_version3 = {
|
|
.vs_vers = 3,
|
|
.vs_nproc = 22,
|
|
.vs_proc = nfsd_procedures3,
|
|
.vs_dispatch = nfsd_dispatch,
|
|
.vs_count = nfsd_count3,
|
|
.vs_xdrsize = NFS3_SVC_XDRSIZE,
|
|
};
|