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941 lines
24 KiB
941 lines
24 KiB
// 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 <[email protected]> |
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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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|
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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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|
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dprintk("nfsd: GETATTR(3) %s\n", |
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SVCFH_fmt(&argp->fh)); |
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|
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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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|
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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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|
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fh_copy(&resp->dirfh, &argp->fh); |
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fh_init(&resp->fh, NFS3_FHSIZE); |
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|
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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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|
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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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|
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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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|
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dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh)); |
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|
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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->pages = rqstp->rq_next_page++; |
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resp->status = nfsd_readlink(rqstp, &resp->fh, |
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page_address(*resp->pages), &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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|
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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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resp->pages = rqstp->rq_next_page; |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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/* |
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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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|
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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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|
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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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|
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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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* 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; |
|
} |
|
|
|
static __be32 |
|
nfsd3_proc_rename(struct svc_rqst *rqstp) |
|
{ |
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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); |
|
fh_copy(&resp->tfh, &argp->tfh); |
|
resp->status = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen, |
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&resp->tfh, argp->tname, argp->tlen); |
|
return rpc_success; |
|
} |
|
|
|
static __be32 |
|
nfsd3_proc_link(struct svc_rqst *rqstp) |
|
{ |
|
struct nfsd3_linkargs *argp = rqstp->rq_argp; |
|
struct nfsd3_linkres *resp = rqstp->rq_resp; |
|
|
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dprintk("nfsd: LINK(3) %s ->\n", |
|
SVCFH_fmt(&argp->ffh)); |
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dprintk("nfsd: -> %s %.*s\n", |
|
SVCFH_fmt(&argp->tfh), |
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argp->tlen, |
|
argp->tname); |
|
|
|
fh_copy(&resp->fh, &argp->ffh); |
|
fh_copy(&resp->tfh, &argp->tfh); |
|
resp->status = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen, |
|
&resp->fh); |
|
return rpc_success; |
|
} |
|
|
|
static void nfsd3_init_dirlist_pages(struct svc_rqst *rqstp, |
|
struct nfsd3_readdirres *resp, |
|
int count) |
|
{ |
|
struct xdr_buf *buf = &resp->dirlist; |
|
struct xdr_stream *xdr = &resp->xdr; |
|
|
|
count = min_t(u32, count, svc_max_payload(rqstp)); |
|
|
|
memset(buf, 0, sizeof(*buf)); |
|
|
|
/* Reserve room for the NULL ptr & eof flag (-2 words) */ |
|
buf->buflen = count - XDR_UNIT * 2; |
|
buf->pages = rqstp->rq_next_page; |
|
while (count > 0) { |
|
rqstp->rq_next_page++; |
|
count -= PAGE_SIZE; |
|
} |
|
|
|
/* This is xdr_init_encode(), but it assumes that |
|
* the head kvec has already been consumed. */ |
|
xdr_set_scratch_buffer(xdr, NULL, 0); |
|
xdr->buf = buf; |
|
xdr->page_ptr = buf->pages; |
|
xdr->iov = NULL; |
|
xdr->p = page_address(*buf->pages); |
|
xdr->end = xdr->p + (PAGE_SIZE >> 2); |
|
xdr->rqst = NULL; |
|
} |
|
|
|
/* |
|
* Read a portion of a directory. |
|
*/ |
|
static __be32 |
|
nfsd3_proc_readdir(struct svc_rqst *rqstp) |
|
{ |
|
struct nfsd3_readdirargs *argp = rqstp->rq_argp; |
|
struct nfsd3_readdirres *resp = rqstp->rq_resp; |
|
loff_t offset; |
|
|
|
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); |
|
|
|
fh_copy(&resp->fh, &argp->fh); |
|
resp->common.err = nfs_ok; |
|
resp->cookie_offset = 0; |
|
resp->rqstp = rqstp; |
|
offset = argp->cookie; |
|
resp->status = nfsd_readdir(rqstp, &resp->fh, &offset, |
|
&resp->common, nfs3svc_encode_entry3); |
|
memcpy(resp->verf, argp->verf, 8); |
|
nfs3svc_encode_cookie3(resp, offset); |
|
|
|
/* Recycle only pages that were part of the reply */ |
|
rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
|
|
|
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; |
|
loff_t offset; |
|
|
|
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); |
|
|
|
fh_copy(&resp->fh, &argp->fh); |
|
resp->common.err = nfs_ok; |
|
resp->cookie_offset = 0; |
|
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_entryplus3); |
|
memcpy(resp->verf, argp->verf, 8); |
|
nfs3svc_encode_cookie3(resp, offset); |
|
|
|
/* Recycle only pages that were part of the reply */ |
|
rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
|
|
|
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_getattrres, |
|
.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_lookupres, |
|
.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, |
|
};
|
|
|