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![Anna Schumaker](/assets/img/avatar_default.png)
I only implemented the sync version of this call, since it's the easiest. I can simply call vfs_copy_range() and have the vfs do the right thing for the filesystem being exported. Signed-off-by: Anna Schumaker <bjschuma@netapp.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2509 lines
70 KiB
C
2509 lines
70 KiB
C
/*
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* Server-side procedures for NFSv4.
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*
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* Copyright (c) 2002 The Regents of the University of Michigan.
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* All rights reserved.
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*
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* Kendrick Smith <kmsmith@umich.edu>
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* Andy Adamson <andros@umich.edu>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/file.h>
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#include <linux/falloc.h>
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#include <linux/slab.h>
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#include "idmap.h"
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#include "cache.h"
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#include "xdr4.h"
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#include "vfs.h"
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#include "current_stateid.h"
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#include "netns.h"
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#include "acl.h"
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#include "pnfs.h"
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#include "trace.h"
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#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
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#include <linux/security.h>
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static inline void
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nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
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{
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struct inode *inode = d_inode(resfh->fh_dentry);
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int status;
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inode_lock(inode);
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status = security_inode_setsecctx(resfh->fh_dentry,
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label->data, label->len);
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inode_unlock(inode);
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if (status)
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/*
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* XXX: We should really fail the whole open, but we may
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* already have created a new file, so it may be too
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* late. For now this seems the least of evils:
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*/
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bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
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return;
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}
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#else
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static inline void
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nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
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{ }
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#endif
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#define NFSDDBG_FACILITY NFSDDBG_PROC
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static u32 nfsd_attrmask[] = {
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NFSD_WRITEABLE_ATTRS_WORD0,
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NFSD_WRITEABLE_ATTRS_WORD1,
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NFSD_WRITEABLE_ATTRS_WORD2
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};
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static u32 nfsd41_ex_attrmask[] = {
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NFSD_SUPPATTR_EXCLCREAT_WORD0,
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NFSD_SUPPATTR_EXCLCREAT_WORD1,
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NFSD_SUPPATTR_EXCLCREAT_WORD2
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};
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static __be32
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check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
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u32 *bmval, u32 *writable)
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{
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struct dentry *dentry = cstate->current_fh.fh_dentry;
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/*
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* Check about attributes are supported by the NFSv4 server or not.
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* According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
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*/
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if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
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(bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
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(bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
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return nfserr_attrnotsupp;
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/*
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* Check FATTR4_WORD0_ACL can be supported
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* in current environment or not.
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*/
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if (bmval[0] & FATTR4_WORD0_ACL) {
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if (!IS_POSIXACL(d_inode(dentry)))
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return nfserr_attrnotsupp;
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}
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/*
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* According to spec, read-only attributes return ERR_INVAL.
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*/
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if (writable) {
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if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
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(bmval[2] & ~writable[2]))
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return nfserr_inval;
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}
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return nfs_ok;
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}
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static __be32
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nfsd4_check_open_attributes(struct svc_rqst *rqstp,
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struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
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{
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__be32 status = nfs_ok;
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if (open->op_create == NFS4_OPEN_CREATE) {
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if (open->op_createmode == NFS4_CREATE_UNCHECKED
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|| open->op_createmode == NFS4_CREATE_GUARDED)
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status = check_attr_support(rqstp, cstate,
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open->op_bmval, nfsd_attrmask);
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else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
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status = check_attr_support(rqstp, cstate,
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open->op_bmval, nfsd41_ex_attrmask);
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}
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return status;
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}
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static int
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is_create_with_attrs(struct nfsd4_open *open)
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{
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return open->op_create == NFS4_OPEN_CREATE
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&& (open->op_createmode == NFS4_CREATE_UNCHECKED
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|| open->op_createmode == NFS4_CREATE_GUARDED
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|| open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
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}
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/*
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* if error occurs when setting the acl, just clear the acl bit
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* in the returned attr bitmap.
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*/
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static void
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do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
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struct nfs4_acl *acl, u32 *bmval)
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{
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__be32 status;
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status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
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if (status)
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/*
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* We should probably fail the whole open at this point,
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* but we've already created the file, so it's too late;
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* So this seems the least of evils:
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*/
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bmval[0] &= ~FATTR4_WORD0_ACL;
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}
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static inline void
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fh_dup2(struct svc_fh *dst, struct svc_fh *src)
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{
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fh_put(dst);
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dget(src->fh_dentry);
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if (src->fh_export)
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exp_get(src->fh_export);
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*dst = *src;
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}
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static __be32
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do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
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{
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__be32 status;
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if (open->op_truncate &&
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!(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
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return nfserr_inval;
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accmode |= NFSD_MAY_READ_IF_EXEC;
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if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
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accmode |= NFSD_MAY_READ;
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if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
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accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
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if (open->op_share_deny & NFS4_SHARE_DENY_READ)
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accmode |= NFSD_MAY_WRITE;
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status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
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return status;
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}
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static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
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{
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umode_t mode = d_inode(fh->fh_dentry)->i_mode;
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if (S_ISREG(mode))
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return nfs_ok;
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if (S_ISDIR(mode))
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return nfserr_isdir;
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/*
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* Using err_symlink as our catch-all case may look odd; but
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* there's no other obvious error for this case in 4.0, and we
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* happen to know that it will cause the linux v4 client to do
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* the right thing on attempts to open something other than a
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* regular file.
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*/
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return nfserr_symlink;
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}
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static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh)
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{
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if (nfsd4_has_session(cstate))
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return;
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fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
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&resfh->fh_handle);
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}
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static __be32
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do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh)
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{
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struct svc_fh *current_fh = &cstate->current_fh;
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int accmode;
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__be32 status;
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*resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
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if (!*resfh)
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return nfserr_jukebox;
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fh_init(*resfh, NFS4_FHSIZE);
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open->op_truncate = 0;
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if (open->op_create) {
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/* FIXME: check session persistence and pnfs flags.
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* The nfsv4.1 spec requires the following semantics:
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*
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* Persistent | pNFS | Server REQUIRED | Client Allowed
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* Reply Cache | server | |
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* -------------+--------+-----------------+--------------------
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* no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
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* | | | (SHOULD)
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* | | and EXCLUSIVE4 | or EXCLUSIVE4
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* | | | (SHOULD NOT)
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* no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
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* yes | no | GUARDED4 | GUARDED4
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* yes | yes | GUARDED4 | GUARDED4
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*/
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/*
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* Note: create modes (UNCHECKED,GUARDED...) are the same
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* in NFSv4 as in v3 except EXCLUSIVE4_1.
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*/
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status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
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open->op_fname.len, &open->op_iattr,
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*resfh, open->op_createmode,
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(u32 *)open->op_verf.data,
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&open->op_truncate, &open->op_created);
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if (!status && open->op_label.len)
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nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval);
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/*
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* Following rfc 3530 14.2.16, and rfc 5661 18.16.4
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* use the returned bitmask to indicate which attributes
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* we used to store the verifier:
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*/
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if (nfsd_create_is_exclusive(open->op_createmode) && status == 0)
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open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS |
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FATTR4_WORD1_TIME_MODIFY);
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} else
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/*
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* Note this may exit with the parent still locked.
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* We will hold the lock until nfsd4_open's final
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* lookup, to prevent renames or unlinks until we've had
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* a chance to an acquire a delegation if appropriate.
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*/
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status = nfsd_lookup(rqstp, current_fh,
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open->op_fname.data, open->op_fname.len, *resfh);
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if (status)
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goto out;
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status = nfsd_check_obj_isreg(*resfh);
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if (status)
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goto out;
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if (is_create_with_attrs(open) && open->op_acl != NULL)
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do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval);
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nfsd4_set_open_owner_reply_cache(cstate, open, *resfh);
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accmode = NFSD_MAY_NOP;
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if (open->op_created ||
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open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
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accmode |= NFSD_MAY_OWNER_OVERRIDE;
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status = do_open_permission(rqstp, *resfh, open, accmode);
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set_change_info(&open->op_cinfo, current_fh);
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out:
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return status;
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}
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static __be32
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do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
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{
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struct svc_fh *current_fh = &cstate->current_fh;
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__be32 status;
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int accmode = 0;
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/* We don't know the target directory, and therefore can not
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* set the change info
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*/
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memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
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nfsd4_set_open_owner_reply_cache(cstate, open, current_fh);
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open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
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(open->op_iattr.ia_size == 0);
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/*
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* In the delegation case, the client is telling us about an
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* open that it *already* performed locally, some time ago. We
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* should let it succeed now if possible.
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*
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* In the case of a CLAIM_FH open, on the other hand, the client
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* may be counting on us to enforce permissions (the Linux 4.1
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* client uses this for normal opens, for example).
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*/
|
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if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
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accmode = NFSD_MAY_OWNER_OVERRIDE;
|
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|
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status = do_open_permission(rqstp, current_fh, open, accmode);
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|
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return status;
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}
|
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|
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static void
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copy_clientid(clientid_t *clid, struct nfsd4_session *session)
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{
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struct nfsd4_sessionid *sid =
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(struct nfsd4_sessionid *)session->se_sessionid.data;
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|
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clid->cl_boot = sid->clientid.cl_boot;
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clid->cl_id = sid->clientid.cl_id;
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}
|
|
|
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static __be32
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nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
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struct nfsd4_open *open)
|
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{
|
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__be32 status;
|
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struct svc_fh *resfh = NULL;
|
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struct net *net = SVC_NET(rqstp);
|
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struct nfsd_net *nn = net_generic(net, nfsd_net_id);
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|
|
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dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
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(int)open->op_fname.len, open->op_fname.data,
|
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open->op_openowner);
|
|
|
|
/* This check required by spec. */
|
|
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
|
|
return nfserr_inval;
|
|
|
|
open->op_created = 0;
|
|
/*
|
|
* RFC5661 18.51.3
|
|
* Before RECLAIM_COMPLETE done, server should deny new lock
|
|
*/
|
|
if (nfsd4_has_session(cstate) &&
|
|
!test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
|
|
&cstate->session->se_client->cl_flags) &&
|
|
open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
|
|
return nfserr_grace;
|
|
|
|
if (nfsd4_has_session(cstate))
|
|
copy_clientid(&open->op_clientid, cstate->session);
|
|
|
|
/* check seqid for replay. set nfs4_owner */
|
|
status = nfsd4_process_open1(cstate, open, nn);
|
|
if (status == nfserr_replay_me) {
|
|
struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
|
|
fh_put(&cstate->current_fh);
|
|
fh_copy_shallow(&cstate->current_fh.fh_handle,
|
|
&rp->rp_openfh);
|
|
status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
|
|
if (status)
|
|
dprintk("nfsd4_open: replay failed"
|
|
" restoring previous filehandle\n");
|
|
else
|
|
status = nfserr_replay_me;
|
|
}
|
|
if (status)
|
|
goto out;
|
|
if (open->op_xdr_error) {
|
|
status = open->op_xdr_error;
|
|
goto out;
|
|
}
|
|
|
|
status = nfsd4_check_open_attributes(rqstp, cstate, open);
|
|
if (status)
|
|
goto out;
|
|
|
|
/* Openowner is now set, so sequence id will get bumped. Now we need
|
|
* these checks before we do any creates: */
|
|
status = nfserr_grace;
|
|
if (opens_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
|
|
goto out;
|
|
status = nfserr_no_grace;
|
|
if (!opens_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
|
|
goto out;
|
|
|
|
switch (open->op_claim_type) {
|
|
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
|
|
case NFS4_OPEN_CLAIM_NULL:
|
|
status = do_open_lookup(rqstp, cstate, open, &resfh);
|
|
if (status)
|
|
goto out;
|
|
break;
|
|
case NFS4_OPEN_CLAIM_PREVIOUS:
|
|
status = nfs4_check_open_reclaim(&open->op_clientid,
|
|
cstate, nn);
|
|
if (status)
|
|
goto out;
|
|
open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
|
|
case NFS4_OPEN_CLAIM_FH:
|
|
case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
|
|
status = do_open_fhandle(rqstp, cstate, open);
|
|
if (status)
|
|
goto out;
|
|
resfh = &cstate->current_fh;
|
|
break;
|
|
case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
|
|
case NFS4_OPEN_CLAIM_DELEGATE_PREV:
|
|
dprintk("NFSD: unsupported OPEN claim type %d\n",
|
|
open->op_claim_type);
|
|
status = nfserr_notsupp;
|
|
goto out;
|
|
default:
|
|
dprintk("NFSD: Invalid OPEN claim type %d\n",
|
|
open->op_claim_type);
|
|
status = nfserr_inval;
|
|
goto out;
|
|
}
|
|
/*
|
|
* nfsd4_process_open2() does the actual opening of the file. If
|
|
* successful, it (1) truncates the file if open->op_truncate was
|
|
* set, (2) sets open->op_stateid, (3) sets open->op_delegation.
|
|
*/
|
|
status = nfsd4_process_open2(rqstp, resfh, open);
|
|
WARN(status && open->op_created,
|
|
"nfsd4_process_open2 failed to open newly-created file! status=%u\n",
|
|
be32_to_cpu(status));
|
|
out:
|
|
if (resfh && resfh != &cstate->current_fh) {
|
|
fh_dup2(&cstate->current_fh, resfh);
|
|
fh_put(resfh);
|
|
kfree(resfh);
|
|
}
|
|
nfsd4_cleanup_open_state(cstate, open);
|
|
nfsd4_bump_seqid(cstate, status);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* OPEN is the only seqid-mutating operation whose decoding can fail
|
|
* with a seqid-mutating error (specifically, decoding of user names in
|
|
* the attributes). Therefore we have to do some processing to look up
|
|
* the stateowner so that we can bump the seqid.
|
|
*/
|
|
static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op)
|
|
{
|
|
struct nfsd4_open *open = (struct nfsd4_open *)&op->u;
|
|
|
|
if (!seqid_mutating_err(ntohl(op->status)))
|
|
return op->status;
|
|
if (nfsd4_has_session(cstate))
|
|
return op->status;
|
|
open->op_xdr_error = op->status;
|
|
return nfsd4_open(rqstp, cstate, open);
|
|
}
|
|
|
|
/*
|
|
* filehandle-manipulating ops.
|
|
*/
|
|
static __be32
|
|
nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct svc_fh **getfh)
|
|
{
|
|
if (!cstate->current_fh.fh_dentry)
|
|
return nfserr_nofilehandle;
|
|
|
|
*getfh = &cstate->current_fh;
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_putfh *putfh)
|
|
{
|
|
fh_put(&cstate->current_fh);
|
|
cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
|
|
memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
|
|
putfh->pf_fhlen);
|
|
return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
void *arg)
|
|
{
|
|
__be32 status;
|
|
|
|
fh_put(&cstate->current_fh);
|
|
status = exp_pseudoroot(rqstp, &cstate->current_fh);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
void *arg)
|
|
{
|
|
if (!cstate->save_fh.fh_dentry)
|
|
return nfserr_restorefh;
|
|
|
|
fh_dup2(&cstate->current_fh, &cstate->save_fh);
|
|
if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
|
|
memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
|
|
SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
|
|
}
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
void *arg)
|
|
{
|
|
if (!cstate->current_fh.fh_dentry)
|
|
return nfserr_nofilehandle;
|
|
|
|
fh_dup2(&cstate->save_fh, &cstate->current_fh);
|
|
if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
|
|
memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
|
|
SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
|
|
}
|
|
return nfs_ok;
|
|
}
|
|
|
|
/*
|
|
* misc nfsv4 ops
|
|
*/
|
|
static __be32
|
|
nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_access *access)
|
|
{
|
|
if (access->ac_req_access & ~NFS3_ACCESS_FULL)
|
|
return nfserr_inval;
|
|
|
|
access->ac_resp_access = access->ac_req_access;
|
|
return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
|
|
&access->ac_supported);
|
|
}
|
|
|
|
static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
|
|
{
|
|
__be32 verf[2];
|
|
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
|
|
|
|
/*
|
|
* This is opaque to client, so no need to byte-swap. Use
|
|
* __force to keep sparse happy
|
|
*/
|
|
verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec;
|
|
verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec;
|
|
memcpy(verifier->data, verf, sizeof(verifier->data));
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_commit *commit)
|
|
{
|
|
gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp));
|
|
return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
|
|
commit->co_count);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_create *create)
|
|
{
|
|
struct svc_fh resfh;
|
|
__be32 status;
|
|
dev_t rdev;
|
|
|
|
fh_init(&resfh, NFS4_FHSIZE);
|
|
|
|
status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_NOP);
|
|
if (status)
|
|
return status;
|
|
|
|
status = check_attr_support(rqstp, cstate, create->cr_bmval,
|
|
nfsd_attrmask);
|
|
if (status)
|
|
return status;
|
|
|
|
switch (create->cr_type) {
|
|
case NF4LNK:
|
|
status = nfsd_symlink(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
create->cr_data, &resfh);
|
|
break;
|
|
|
|
case NF4BLK:
|
|
rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
|
|
if (MAJOR(rdev) != create->cr_specdata1 ||
|
|
MINOR(rdev) != create->cr_specdata2)
|
|
return nfserr_inval;
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&create->cr_iattr, S_IFBLK, rdev, &resfh);
|
|
break;
|
|
|
|
case NF4CHR:
|
|
rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
|
|
if (MAJOR(rdev) != create->cr_specdata1 ||
|
|
MINOR(rdev) != create->cr_specdata2)
|
|
return nfserr_inval;
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&create->cr_iattr,S_IFCHR, rdev, &resfh);
|
|
break;
|
|
|
|
case NF4SOCK:
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&create->cr_iattr, S_IFSOCK, 0, &resfh);
|
|
break;
|
|
|
|
case NF4FIFO:
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&create->cr_iattr, S_IFIFO, 0, &resfh);
|
|
break;
|
|
|
|
case NF4DIR:
|
|
create->cr_iattr.ia_valid &= ~ATTR_SIZE;
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&create->cr_iattr, S_IFDIR, 0, &resfh);
|
|
break;
|
|
|
|
default:
|
|
status = nfserr_badtype;
|
|
}
|
|
|
|
if (status)
|
|
goto out;
|
|
|
|
if (create->cr_label.len)
|
|
nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval);
|
|
|
|
if (create->cr_acl != NULL)
|
|
do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
|
|
create->cr_bmval);
|
|
|
|
fh_unlock(&cstate->current_fh);
|
|
set_change_info(&create->cr_cinfo, &cstate->current_fh);
|
|
fh_dup2(&cstate->current_fh, &resfh);
|
|
out:
|
|
fh_put(&resfh);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_getattr *getattr)
|
|
{
|
|
__be32 status;
|
|
|
|
status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
|
|
if (status)
|
|
return status;
|
|
|
|
if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
|
|
return nfserr_inval;
|
|
|
|
getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
|
|
getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
|
|
getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
|
|
|
|
getattr->ga_fhp = &cstate->current_fh;
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_link *link)
|
|
{
|
|
__be32 status = nfserr_nofilehandle;
|
|
|
|
if (!cstate->save_fh.fh_dentry)
|
|
return status;
|
|
status = nfsd_link(rqstp, &cstate->current_fh,
|
|
link->li_name, link->li_namelen, &cstate->save_fh);
|
|
if (!status)
|
|
set_change_info(&link->li_cinfo, &cstate->current_fh);
|
|
return status;
|
|
}
|
|
|
|
static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
|
|
{
|
|
struct svc_fh tmp_fh;
|
|
__be32 ret;
|
|
|
|
fh_init(&tmp_fh, NFS4_FHSIZE);
|
|
ret = exp_pseudoroot(rqstp, &tmp_fh);
|
|
if (ret)
|
|
return ret;
|
|
if (tmp_fh.fh_dentry == fh->fh_dentry) {
|
|
fh_put(&tmp_fh);
|
|
return nfserr_noent;
|
|
}
|
|
fh_put(&tmp_fh);
|
|
return nfsd_lookup(rqstp, fh, "..", 2, fh);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
void *arg)
|
|
{
|
|
return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_lookup *lookup)
|
|
{
|
|
return nfsd_lookup(rqstp, &cstate->current_fh,
|
|
lookup->lo_name, lookup->lo_len,
|
|
&cstate->current_fh);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_read *read)
|
|
{
|
|
__be32 status;
|
|
|
|
read->rd_filp = NULL;
|
|
if (read->rd_offset >= OFFSET_MAX)
|
|
return nfserr_inval;
|
|
|
|
/*
|
|
* If we do a zero copy read, then a client will see read data
|
|
* that reflects the state of the file *after* performing the
|
|
* following compound.
|
|
*
|
|
* To ensure proper ordering, we therefore turn off zero copy if
|
|
* the client wants us to do more in this compound:
|
|
*/
|
|
if (!nfsd4_last_compound_op(rqstp))
|
|
clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags);
|
|
|
|
/* check stateid */
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
&read->rd_stateid, RD_STATE,
|
|
&read->rd_filp, &read->rd_tmp_file);
|
|
if (status) {
|
|
dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
|
|
goto out;
|
|
}
|
|
status = nfs_ok;
|
|
out:
|
|
read->rd_rqstp = rqstp;
|
|
read->rd_fhp = &cstate->current_fh;
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_readdir *readdir)
|
|
{
|
|
u64 cookie = readdir->rd_cookie;
|
|
static const nfs4_verifier zeroverf;
|
|
|
|
/* no need to check permission - this will be done in nfsd_readdir() */
|
|
|
|
if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
|
|
return nfserr_inval;
|
|
|
|
readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
|
|
readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
|
|
readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
|
|
|
|
if ((cookie == 1) || (cookie == 2) ||
|
|
(cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
|
|
return nfserr_bad_cookie;
|
|
|
|
readdir->rd_rqstp = rqstp;
|
|
readdir->rd_fhp = &cstate->current_fh;
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_readlink *readlink)
|
|
{
|
|
readlink->rl_rqstp = rqstp;
|
|
readlink->rl_fhp = &cstate->current_fh;
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_remove *remove)
|
|
{
|
|
__be32 status;
|
|
|
|
if (opens_in_grace(SVC_NET(rqstp)))
|
|
return nfserr_grace;
|
|
status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
|
|
remove->rm_name, remove->rm_namelen);
|
|
if (!status) {
|
|
fh_unlock(&cstate->current_fh);
|
|
set_change_info(&remove->rm_cinfo, &cstate->current_fh);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_rename *rename)
|
|
{
|
|
__be32 status = nfserr_nofilehandle;
|
|
|
|
if (!cstate->save_fh.fh_dentry)
|
|
return status;
|
|
if (opens_in_grace(SVC_NET(rqstp)) &&
|
|
!(cstate->save_fh.fh_export->ex_flags & NFSEXP_NOSUBTREECHECK))
|
|
return nfserr_grace;
|
|
status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
|
|
rename->rn_snamelen, &cstate->current_fh,
|
|
rename->rn_tname, rename->rn_tnamelen);
|
|
if (status)
|
|
return status;
|
|
set_change_info(&rename->rn_sinfo, &cstate->current_fh);
|
|
set_change_info(&rename->rn_tinfo, &cstate->save_fh);
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_secinfo *secinfo)
|
|
{
|
|
struct svc_export *exp;
|
|
struct dentry *dentry;
|
|
__be32 err;
|
|
|
|
err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
|
|
if (err)
|
|
return err;
|
|
err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
|
|
secinfo->si_name, secinfo->si_namelen,
|
|
&exp, &dentry);
|
|
if (err)
|
|
return err;
|
|
fh_unlock(&cstate->current_fh);
|
|
if (d_really_is_negative(dentry)) {
|
|
exp_put(exp);
|
|
err = nfserr_noent;
|
|
} else
|
|
secinfo->si_exp = exp;
|
|
dput(dentry);
|
|
if (cstate->minorversion)
|
|
/* See rfc 5661 section 2.6.3.1.1.8 */
|
|
fh_put(&cstate->current_fh);
|
|
return err;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_secinfo_no_name *sin)
|
|
{
|
|
__be32 err;
|
|
|
|
switch (sin->sin_style) {
|
|
case NFS4_SECINFO_STYLE4_CURRENT_FH:
|
|
break;
|
|
case NFS4_SECINFO_STYLE4_PARENT:
|
|
err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
|
|
if (err)
|
|
return err;
|
|
break;
|
|
default:
|
|
return nfserr_inval;
|
|
}
|
|
|
|
sin->sin_exp = exp_get(cstate->current_fh.fh_export);
|
|
fh_put(&cstate->current_fh);
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_setattr *setattr)
|
|
{
|
|
__be32 status = nfs_ok;
|
|
int err;
|
|
|
|
if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate,
|
|
&cstate->current_fh, &setattr->sa_stateid,
|
|
WR_STATE, NULL, NULL);
|
|
if (status) {
|
|
dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
|
|
return status;
|
|
}
|
|
}
|
|
err = fh_want_write(&cstate->current_fh);
|
|
if (err)
|
|
return nfserrno(err);
|
|
status = nfs_ok;
|
|
|
|
status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
|
|
nfsd_attrmask);
|
|
if (status)
|
|
goto out;
|
|
|
|
if (setattr->sa_acl != NULL)
|
|
status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
|
|
setattr->sa_acl);
|
|
if (status)
|
|
goto out;
|
|
if (setattr->sa_label.len)
|
|
status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh,
|
|
&setattr->sa_label);
|
|
if (status)
|
|
goto out;
|
|
status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
|
|
0, (time_t)0);
|
|
out:
|
|
fh_drop_write(&cstate->current_fh);
|
|
return status;
|
|
}
|
|
|
|
static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write)
|
|
{
|
|
int i = 1;
|
|
int buflen = write->wr_buflen;
|
|
|
|
vec[0].iov_base = write->wr_head.iov_base;
|
|
vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len);
|
|
buflen -= vec[0].iov_len;
|
|
|
|
while (buflen) {
|
|
vec[i].iov_base = page_address(write->wr_pagelist[i - 1]);
|
|
vec[i].iov_len = min_t(int, PAGE_SIZE, buflen);
|
|
buflen -= vec[i].iov_len;
|
|
i++;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_write *write)
|
|
{
|
|
stateid_t *stateid = &write->wr_stateid;
|
|
struct file *filp = NULL;
|
|
__be32 status = nfs_ok;
|
|
unsigned long cnt;
|
|
int nvecs;
|
|
|
|
if (write->wr_offset >= OFFSET_MAX)
|
|
return nfserr_inval;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
stateid, WR_STATE, &filp, NULL);
|
|
if (status) {
|
|
dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
|
|
return status;
|
|
}
|
|
|
|
cnt = write->wr_buflen;
|
|
write->wr_how_written = write->wr_stable_how;
|
|
gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp));
|
|
|
|
nvecs = fill_in_write_vector(rqstp->rq_vec, write);
|
|
WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
|
|
|
|
status = nfsd_vfs_write(rqstp, &cstate->current_fh, filp,
|
|
write->wr_offset, rqstp->rq_vec, nvecs, &cnt,
|
|
&write->wr_how_written);
|
|
fput(filp);
|
|
|
|
write->wr_bytes_written = cnt;
|
|
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
stateid_t *src_stateid, struct file **src,
|
|
stateid_t *dst_stateid, struct file **dst)
|
|
{
|
|
__be32 status;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh,
|
|
src_stateid, RD_STATE, src, NULL);
|
|
if (status) {
|
|
dprintk("NFSD: %s: couldn't process src stateid!\n", __func__);
|
|
goto out;
|
|
}
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
dst_stateid, WR_STATE, dst, NULL);
|
|
if (status) {
|
|
dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__);
|
|
goto out_put_src;
|
|
}
|
|
|
|
/* fix up for NFS-specific error code */
|
|
if (!S_ISREG(file_inode(*src)->i_mode) ||
|
|
!S_ISREG(file_inode(*dst)->i_mode)) {
|
|
status = nfserr_wrong_type;
|
|
goto out_put_dst;
|
|
}
|
|
|
|
out:
|
|
return status;
|
|
out_put_dst:
|
|
fput(*dst);
|
|
out_put_src:
|
|
fput(*src);
|
|
goto out;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_clone *clone)
|
|
{
|
|
struct file *src, *dst;
|
|
__be32 status;
|
|
|
|
status = nfsd4_verify_copy(rqstp, cstate, &clone->cl_src_stateid, &src,
|
|
&clone->cl_dst_stateid, &dst);
|
|
if (status)
|
|
goto out;
|
|
|
|
status = nfsd4_clone_file_range(src, clone->cl_src_pos,
|
|
dst, clone->cl_dst_pos, clone->cl_count);
|
|
|
|
fput(dst);
|
|
fput(src);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_copy *copy)
|
|
{
|
|
struct file *src, *dst;
|
|
__be32 status;
|
|
ssize_t bytes;
|
|
|
|
status = nfsd4_verify_copy(rqstp, cstate, ©->cp_src_stateid, &src,
|
|
©->cp_dst_stateid, &dst);
|
|
if (status)
|
|
goto out;
|
|
|
|
bytes = nfsd_copy_file_range(src, copy->cp_src_pos,
|
|
dst, copy->cp_dst_pos, copy->cp_count);
|
|
|
|
if (bytes < 0)
|
|
status = nfserrno(bytes);
|
|
else {
|
|
copy->cp_res.wr_bytes_written = bytes;
|
|
copy->cp_res.wr_stable_how = NFS_UNSTABLE;
|
|
copy->cp_consecutive = 1;
|
|
copy->cp_synchronous = 1;
|
|
gen_boot_verifier(©->cp_res.wr_verifier, SVC_NET(rqstp));
|
|
status = nfs_ok;
|
|
}
|
|
|
|
fput(src);
|
|
fput(dst);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_fallocate *fallocate, int flags)
|
|
{
|
|
__be32 status = nfserr_notsupp;
|
|
struct file *file;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
&fallocate->falloc_stateid,
|
|
WR_STATE, &file, NULL);
|
|
if (status != nfs_ok) {
|
|
dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
|
|
return status;
|
|
}
|
|
|
|
status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file,
|
|
fallocate->falloc_offset,
|
|
fallocate->falloc_length,
|
|
flags);
|
|
fput(file);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_fallocate *fallocate)
|
|
{
|
|
return nfsd4_fallocate(rqstp, cstate, fallocate, 0);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_fallocate *fallocate)
|
|
{
|
|
return nfsd4_fallocate(rqstp, cstate, fallocate,
|
|
FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_seek *seek)
|
|
{
|
|
int whence;
|
|
__be32 status;
|
|
struct file *file;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
&seek->seek_stateid,
|
|
RD_STATE, &file, NULL);
|
|
if (status) {
|
|
dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
|
|
return status;
|
|
}
|
|
|
|
switch (seek->seek_whence) {
|
|
case NFS4_CONTENT_DATA:
|
|
whence = SEEK_DATA;
|
|
break;
|
|
case NFS4_CONTENT_HOLE:
|
|
whence = SEEK_HOLE;
|
|
break;
|
|
default:
|
|
status = nfserr_union_notsupp;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Note: This call does change file->f_pos, but nothing in NFSD
|
|
* should ever file->f_pos.
|
|
*/
|
|
seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence);
|
|
if (seek->seek_pos < 0)
|
|
status = nfserrno(seek->seek_pos);
|
|
else if (seek->seek_pos >= i_size_read(file_inode(file)))
|
|
seek->seek_eof = true;
|
|
|
|
out:
|
|
fput(file);
|
|
return status;
|
|
}
|
|
|
|
/* This routine never returns NFS_OK! If there are no other errors, it
|
|
* will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
|
|
* attributes matched. VERIFY is implemented by mapping NFSERR_SAME
|
|
* to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
|
|
*/
|
|
static __be32
|
|
_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_verify *verify)
|
|
{
|
|
__be32 *buf, *p;
|
|
int count;
|
|
__be32 status;
|
|
|
|
status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
|
|
if (status)
|
|
return status;
|
|
|
|
status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
|
|
if (status)
|
|
return status;
|
|
|
|
if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
|
|
|| (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
|
|
return nfserr_inval;
|
|
if (verify->ve_attrlen & 3)
|
|
return nfserr_inval;
|
|
|
|
/* count in words:
|
|
* bitmap_len(1) + bitmap(2) + attr_len(1) = 4
|
|
*/
|
|
count = 4 + (verify->ve_attrlen >> 2);
|
|
buf = kmalloc(count << 2, GFP_KERNEL);
|
|
if (!buf)
|
|
return nfserr_jukebox;
|
|
|
|
p = buf;
|
|
status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh,
|
|
cstate->current_fh.fh_export,
|
|
cstate->current_fh.fh_dentry,
|
|
verify->ve_bmval,
|
|
rqstp, 0);
|
|
/*
|
|
* If nfsd4_encode_fattr() ran out of space, assume that's because
|
|
* the attributes are longer (hence different) than those given:
|
|
*/
|
|
if (status == nfserr_resource)
|
|
status = nfserr_not_same;
|
|
if (status)
|
|
goto out_kfree;
|
|
|
|
/* skip bitmap */
|
|
p = buf + 1 + ntohl(buf[0]);
|
|
status = nfserr_not_same;
|
|
if (ntohl(*p++) != verify->ve_attrlen)
|
|
goto out_kfree;
|
|
if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
|
|
status = nfserr_same;
|
|
|
|
out_kfree:
|
|
kfree(buf);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_verify *verify)
|
|
{
|
|
__be32 status;
|
|
|
|
status = _nfsd4_verify(rqstp, cstate, verify);
|
|
return status == nfserr_not_same ? nfs_ok : status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_verify *verify)
|
|
{
|
|
__be32 status;
|
|
|
|
status = _nfsd4_verify(rqstp, cstate, verify);
|
|
return status == nfserr_same ? nfs_ok : status;
|
|
}
|
|
|
|
#ifdef CONFIG_NFSD_PNFS
|
|
static const struct nfsd4_layout_ops *
|
|
nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type)
|
|
{
|
|
if (!exp->ex_layout_types) {
|
|
dprintk("%s: export does not support pNFS\n", __func__);
|
|
return NULL;
|
|
}
|
|
|
|
if (!(exp->ex_layout_types & (1 << layout_type))) {
|
|
dprintk("%s: layout type %d not supported\n",
|
|
__func__, layout_type);
|
|
return NULL;
|
|
}
|
|
|
|
return nfsd4_layout_ops[layout_type];
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_getdeviceinfo(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_getdeviceinfo *gdp)
|
|
{
|
|
const struct nfsd4_layout_ops *ops;
|
|
struct nfsd4_deviceid_map *map;
|
|
struct svc_export *exp;
|
|
__be32 nfserr;
|
|
|
|
dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n",
|
|
__func__,
|
|
gdp->gd_layout_type,
|
|
gdp->gd_devid.fsid_idx, gdp->gd_devid.generation,
|
|
gdp->gd_maxcount);
|
|
|
|
map = nfsd4_find_devid_map(gdp->gd_devid.fsid_idx);
|
|
if (!map) {
|
|
dprintk("%s: couldn't find device ID to export mapping!\n",
|
|
__func__);
|
|
return nfserr_noent;
|
|
}
|
|
|
|
exp = rqst_exp_find(rqstp, map->fsid_type, map->fsid);
|
|
if (IS_ERR(exp)) {
|
|
dprintk("%s: could not find device id\n", __func__);
|
|
return nfserr_noent;
|
|
}
|
|
|
|
nfserr = nfserr_layoutunavailable;
|
|
ops = nfsd4_layout_verify(exp, gdp->gd_layout_type);
|
|
if (!ops)
|
|
goto out;
|
|
|
|
nfserr = nfs_ok;
|
|
if (gdp->gd_maxcount != 0) {
|
|
nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb,
|
|
rqstp, cstate->session->se_client, gdp);
|
|
}
|
|
|
|
gdp->gd_notify_types &= ops->notify_types;
|
|
out:
|
|
exp_put(exp);
|
|
return nfserr;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_layoutget(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_layoutget *lgp)
|
|
{
|
|
struct svc_fh *current_fh = &cstate->current_fh;
|
|
const struct nfsd4_layout_ops *ops;
|
|
struct nfs4_layout_stateid *ls;
|
|
__be32 nfserr;
|
|
int accmode;
|
|
|
|
switch (lgp->lg_seg.iomode) {
|
|
case IOMODE_READ:
|
|
accmode = NFSD_MAY_READ;
|
|
break;
|
|
case IOMODE_RW:
|
|
accmode = NFSD_MAY_READ | NFSD_MAY_WRITE;
|
|
break;
|
|
default:
|
|
dprintk("%s: invalid iomode %d\n",
|
|
__func__, lgp->lg_seg.iomode);
|
|
nfserr = nfserr_badiomode;
|
|
goto out;
|
|
}
|
|
|
|
nfserr = fh_verify(rqstp, current_fh, 0, accmode);
|
|
if (nfserr)
|
|
goto out;
|
|
|
|
nfserr = nfserr_layoutunavailable;
|
|
ops = nfsd4_layout_verify(current_fh->fh_export, lgp->lg_layout_type);
|
|
if (!ops)
|
|
goto out;
|
|
|
|
/*
|
|
* Verify minlength and range as per RFC5661:
|
|
* o If loga_length is less than loga_minlength,
|
|
* the metadata server MUST return NFS4ERR_INVAL.
|
|
* o If the sum of loga_offset and loga_minlength exceeds
|
|
* NFS4_UINT64_MAX, and loga_minlength is not
|
|
* NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result.
|
|
* o If the sum of loga_offset and loga_length exceeds
|
|
* NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX,
|
|
* the error NFS4ERR_INVAL MUST result.
|
|
*/
|
|
nfserr = nfserr_inval;
|
|
if (lgp->lg_seg.length < lgp->lg_minlength ||
|
|
(lgp->lg_minlength != NFS4_MAX_UINT64 &&
|
|
lgp->lg_minlength > NFS4_MAX_UINT64 - lgp->lg_seg.offset) ||
|
|
(lgp->lg_seg.length != NFS4_MAX_UINT64 &&
|
|
lgp->lg_seg.length > NFS4_MAX_UINT64 - lgp->lg_seg.offset))
|
|
goto out;
|
|
if (lgp->lg_seg.length == 0)
|
|
goto out;
|
|
|
|
nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lgp->lg_sid,
|
|
true, lgp->lg_layout_type, &ls);
|
|
if (nfserr) {
|
|
trace_layout_get_lookup_fail(&lgp->lg_sid);
|
|
goto out;
|
|
}
|
|
|
|
nfserr = nfserr_recallconflict;
|
|
if (atomic_read(&ls->ls_stid.sc_file->fi_lo_recalls))
|
|
goto out_put_stid;
|
|
|
|
nfserr = ops->proc_layoutget(d_inode(current_fh->fh_dentry),
|
|
current_fh, lgp);
|
|
if (nfserr)
|
|
goto out_put_stid;
|
|
|
|
nfserr = nfsd4_insert_layout(lgp, ls);
|
|
|
|
out_put_stid:
|
|
mutex_unlock(&ls->ls_mutex);
|
|
nfs4_put_stid(&ls->ls_stid);
|
|
out:
|
|
return nfserr;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_layoutcommit(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_layoutcommit *lcp)
|
|
{
|
|
const struct nfsd4_layout_seg *seg = &lcp->lc_seg;
|
|
struct svc_fh *current_fh = &cstate->current_fh;
|
|
const struct nfsd4_layout_ops *ops;
|
|
loff_t new_size = lcp->lc_last_wr + 1;
|
|
struct inode *inode;
|
|
struct nfs4_layout_stateid *ls;
|
|
__be32 nfserr;
|
|
|
|
nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_WRITE);
|
|
if (nfserr)
|
|
goto out;
|
|
|
|
nfserr = nfserr_layoutunavailable;
|
|
ops = nfsd4_layout_verify(current_fh->fh_export, lcp->lc_layout_type);
|
|
if (!ops)
|
|
goto out;
|
|
inode = d_inode(current_fh->fh_dentry);
|
|
|
|
nfserr = nfserr_inval;
|
|
if (new_size <= seg->offset) {
|
|
dprintk("pnfsd: last write before layout segment\n");
|
|
goto out;
|
|
}
|
|
if (new_size > seg->offset + seg->length) {
|
|
dprintk("pnfsd: last write beyond layout segment\n");
|
|
goto out;
|
|
}
|
|
if (!lcp->lc_newoffset && new_size > i_size_read(inode)) {
|
|
dprintk("pnfsd: layoutcommit beyond EOF\n");
|
|
goto out;
|
|
}
|
|
|
|
nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid,
|
|
false, lcp->lc_layout_type,
|
|
&ls);
|
|
if (nfserr) {
|
|
trace_layout_commit_lookup_fail(&lcp->lc_sid);
|
|
/* fixup error code as per RFC5661 */
|
|
if (nfserr == nfserr_bad_stateid)
|
|
nfserr = nfserr_badlayout;
|
|
goto out;
|
|
}
|
|
|
|
/* LAYOUTCOMMIT does not require any serialization */
|
|
mutex_unlock(&ls->ls_mutex);
|
|
|
|
if (new_size > i_size_read(inode)) {
|
|
lcp->lc_size_chg = 1;
|
|
lcp->lc_newsize = new_size;
|
|
} else {
|
|
lcp->lc_size_chg = 0;
|
|
}
|
|
|
|
nfserr = ops->proc_layoutcommit(inode, lcp);
|
|
nfs4_put_stid(&ls->ls_stid);
|
|
out:
|
|
return nfserr;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_layoutreturn(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_layoutreturn *lrp)
|
|
{
|
|
struct svc_fh *current_fh = &cstate->current_fh;
|
|
__be32 nfserr;
|
|
|
|
nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_NOP);
|
|
if (nfserr)
|
|
goto out;
|
|
|
|
nfserr = nfserr_layoutunavailable;
|
|
if (!nfsd4_layout_verify(current_fh->fh_export, lrp->lr_layout_type))
|
|
goto out;
|
|
|
|
switch (lrp->lr_seg.iomode) {
|
|
case IOMODE_READ:
|
|
case IOMODE_RW:
|
|
case IOMODE_ANY:
|
|
break;
|
|
default:
|
|
dprintk("%s: invalid iomode %d\n", __func__,
|
|
lrp->lr_seg.iomode);
|
|
nfserr = nfserr_inval;
|
|
goto out;
|
|
}
|
|
|
|
switch (lrp->lr_return_type) {
|
|
case RETURN_FILE:
|
|
nfserr = nfsd4_return_file_layouts(rqstp, cstate, lrp);
|
|
break;
|
|
case RETURN_FSID:
|
|
case RETURN_ALL:
|
|
nfserr = nfsd4_return_client_layouts(rqstp, cstate, lrp);
|
|
break;
|
|
default:
|
|
dprintk("%s: invalid return_type %d\n", __func__,
|
|
lrp->lr_return_type);
|
|
nfserr = nfserr_inval;
|
|
break;
|
|
}
|
|
out:
|
|
return nfserr;
|
|
}
|
|
#endif /* CONFIG_NFSD_PNFS */
|
|
|
|
/*
|
|
* NULL call.
|
|
*/
|
|
static __be32
|
|
nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
|
|
{
|
|
return nfs_ok;
|
|
}
|
|
|
|
static inline void nfsd4_increment_op_stats(u32 opnum)
|
|
{
|
|
if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
|
|
nfsdstats.nfs4_opcount[opnum]++;
|
|
}
|
|
|
|
typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
|
|
void *);
|
|
typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
|
|
typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
|
|
typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
|
|
|
|
enum nfsd4_op_flags {
|
|
ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
|
|
ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
|
|
ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
|
|
/* For rfc 5661 section 2.6.3.1.1: */
|
|
OP_HANDLES_WRONGSEC = 1 << 3,
|
|
OP_IS_PUTFH_LIKE = 1 << 4,
|
|
/*
|
|
* These are the ops whose result size we estimate before
|
|
* encoding, to avoid performing an op then not being able to
|
|
* respond or cache a response. This includes writes and setattrs
|
|
* as well as the operations usually called "nonidempotent":
|
|
*/
|
|
OP_MODIFIES_SOMETHING = 1 << 5,
|
|
/*
|
|
* Cache compounds containing these ops in the xid-based drc:
|
|
* We use the DRC for compounds containing non-idempotent
|
|
* operations, *except* those that are 4.1-specific (since
|
|
* sessions provide their own EOS), and except for stateful
|
|
* operations other than setclientid and setclientid_confirm
|
|
* (since sequence numbers provide EOS for open, lock, etc in
|
|
* the v4.0 case).
|
|
*/
|
|
OP_CACHEME = 1 << 6,
|
|
/*
|
|
* These are ops which clear current state id.
|
|
*/
|
|
OP_CLEAR_STATEID = 1 << 7,
|
|
};
|
|
|
|
struct nfsd4_operation {
|
|
nfsd4op_func op_func;
|
|
u32 op_flags;
|
|
char *op_name;
|
|
/* Try to get response size before operation */
|
|
nfsd4op_rsize op_rsize_bop;
|
|
stateid_getter op_get_currentstateid;
|
|
stateid_setter op_set_currentstateid;
|
|
};
|
|
|
|
static struct nfsd4_operation nfsd4_ops[];
|
|
|
|
static const char *nfsd4_op_name(unsigned opnum);
|
|
|
|
/*
|
|
* Enforce NFSv4.1 COMPOUND ordering rules:
|
|
*
|
|
* Also note, enforced elsewhere:
|
|
* - SEQUENCE other than as first op results in
|
|
* NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
|
|
* - BIND_CONN_TO_SESSION must be the only op in its compound.
|
|
* (Enforced in nfsd4_bind_conn_to_session().)
|
|
* - DESTROY_SESSION must be the final operation in a compound, if
|
|
* sessionid's in SEQUENCE and DESTROY_SESSION are the same.
|
|
* (Enforced in nfsd4_destroy_session().)
|
|
*/
|
|
static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
|
|
{
|
|
struct nfsd4_op *op = &args->ops[0];
|
|
|
|
/* These ordering requirements don't apply to NFSv4.0: */
|
|
if (args->minorversion == 0)
|
|
return nfs_ok;
|
|
/* This is weird, but OK, not our problem: */
|
|
if (args->opcnt == 0)
|
|
return nfs_ok;
|
|
if (op->status == nfserr_op_illegal)
|
|
return nfs_ok;
|
|
if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
|
|
return nfserr_op_not_in_session;
|
|
if (op->opnum == OP_SEQUENCE)
|
|
return nfs_ok;
|
|
if (args->opcnt != 1)
|
|
return nfserr_not_only_op;
|
|
return nfs_ok;
|
|
}
|
|
|
|
static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
|
|
{
|
|
return &nfsd4_ops[op->opnum];
|
|
}
|
|
|
|
bool nfsd4_cache_this_op(struct nfsd4_op *op)
|
|
{
|
|
if (op->opnum == OP_ILLEGAL)
|
|
return false;
|
|
return OPDESC(op)->op_flags & OP_CACHEME;
|
|
}
|
|
|
|
static bool need_wrongsec_check(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd4_compoundres *resp = rqstp->rq_resp;
|
|
struct nfsd4_compoundargs *argp = rqstp->rq_argp;
|
|
struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
|
|
struct nfsd4_op *next = &argp->ops[resp->opcnt];
|
|
struct nfsd4_operation *thisd;
|
|
struct nfsd4_operation *nextd;
|
|
|
|
thisd = OPDESC(this);
|
|
/*
|
|
* Most ops check wronsec on our own; only the putfh-like ops
|
|
* have special rules.
|
|
*/
|
|
if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
|
|
return false;
|
|
/*
|
|
* rfc 5661 2.6.3.1.1.6: don't bother erroring out a
|
|
* put-filehandle operation if we're not going to use the
|
|
* result:
|
|
*/
|
|
if (argp->opcnt == resp->opcnt)
|
|
return false;
|
|
if (next->opnum == OP_ILLEGAL)
|
|
return false;
|
|
nextd = OPDESC(next);
|
|
/*
|
|
* Rest of 2.6.3.1.1: certain operations will return WRONGSEC
|
|
* errors themselves as necessary; others should check for them
|
|
* now:
|
|
*/
|
|
return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
|
|
}
|
|
|
|
static void svcxdr_init_encode(struct svc_rqst *rqstp,
|
|
struct nfsd4_compoundres *resp)
|
|
{
|
|
struct xdr_stream *xdr = &resp->xdr;
|
|
struct xdr_buf *buf = &rqstp->rq_res;
|
|
struct kvec *head = buf->head;
|
|
|
|
xdr->buf = buf;
|
|
xdr->iov = head;
|
|
xdr->p = head->iov_base + head->iov_len;
|
|
xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack;
|
|
/* Tail and page_len should be zero at this point: */
|
|
buf->len = buf->head[0].iov_len;
|
|
xdr->scratch.iov_len = 0;
|
|
xdr->page_ptr = buf->pages - 1;
|
|
buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages)
|
|
- rqstp->rq_auth_slack;
|
|
}
|
|
|
|
/*
|
|
* COMPOUND call.
|
|
*/
|
|
static __be32
|
|
nfsd4_proc_compound(struct svc_rqst *rqstp,
|
|
struct nfsd4_compoundargs *args,
|
|
struct nfsd4_compoundres *resp)
|
|
{
|
|
struct nfsd4_op *op;
|
|
struct nfsd4_operation *opdesc;
|
|
struct nfsd4_compound_state *cstate = &resp->cstate;
|
|
struct svc_fh *current_fh = &cstate->current_fh;
|
|
struct svc_fh *save_fh = &cstate->save_fh;
|
|
__be32 status;
|
|
|
|
svcxdr_init_encode(rqstp, resp);
|
|
resp->tagp = resp->xdr.p;
|
|
/* reserve space for: taglen, tag, and opcnt */
|
|
xdr_reserve_space(&resp->xdr, 8 + args->taglen);
|
|
resp->taglen = args->taglen;
|
|
resp->tag = args->tag;
|
|
resp->rqstp = rqstp;
|
|
cstate->minorversion = args->minorversion;
|
|
fh_init(current_fh, NFS4_FHSIZE);
|
|
fh_init(save_fh, NFS4_FHSIZE);
|
|
/*
|
|
* Don't use the deferral mechanism for NFSv4; compounds make it
|
|
* too hard to avoid non-idempotency problems.
|
|
*/
|
|
clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
|
|
|
|
/*
|
|
* According to RFC3010, this takes precedence over all other errors.
|
|
*/
|
|
status = nfserr_minor_vers_mismatch;
|
|
if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0)
|
|
goto out;
|
|
|
|
status = nfs41_check_op_ordering(args);
|
|
if (status) {
|
|
op = &args->ops[0];
|
|
op->status = status;
|
|
goto encode_op;
|
|
}
|
|
|
|
while (!status && resp->opcnt < args->opcnt) {
|
|
op = &args->ops[resp->opcnt++];
|
|
|
|
dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
|
|
resp->opcnt, args->opcnt, op->opnum,
|
|
nfsd4_op_name(op->opnum));
|
|
/*
|
|
* The XDR decode routines may have pre-set op->status;
|
|
* for example, if there is a miscellaneous XDR error
|
|
* it will be set to nfserr_bad_xdr.
|
|
*/
|
|
if (op->status) {
|
|
if (op->opnum == OP_OPEN)
|
|
op->status = nfsd4_open_omfg(rqstp, cstate, op);
|
|
goto encode_op;
|
|
}
|
|
|
|
opdesc = OPDESC(op);
|
|
|
|
if (!current_fh->fh_dentry) {
|
|
if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
|
|
op->status = nfserr_nofilehandle;
|
|
goto encode_op;
|
|
}
|
|
} else if (current_fh->fh_export->ex_fslocs.migrated &&
|
|
!(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
|
|
op->status = nfserr_moved;
|
|
goto encode_op;
|
|
}
|
|
|
|
fh_clear_wcc(current_fh);
|
|
|
|
/* If op is non-idempotent */
|
|
if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
|
|
/*
|
|
* Don't execute this op if we couldn't encode a
|
|
* succesful reply:
|
|
*/
|
|
u32 plen = opdesc->op_rsize_bop(rqstp, op);
|
|
/*
|
|
* Plus if there's another operation, make sure
|
|
* we'll have space to at least encode an error:
|
|
*/
|
|
if (resp->opcnt < args->opcnt)
|
|
plen += COMPOUND_ERR_SLACK_SPACE;
|
|
op->status = nfsd4_check_resp_size(resp, plen);
|
|
}
|
|
|
|
if (op->status)
|
|
goto encode_op;
|
|
|
|
if (opdesc->op_get_currentstateid)
|
|
opdesc->op_get_currentstateid(cstate, &op->u);
|
|
op->status = opdesc->op_func(rqstp, cstate, &op->u);
|
|
|
|
if (!op->status) {
|
|
if (opdesc->op_set_currentstateid)
|
|
opdesc->op_set_currentstateid(cstate, &op->u);
|
|
|
|
if (opdesc->op_flags & OP_CLEAR_STATEID)
|
|
clear_current_stateid(cstate);
|
|
|
|
if (need_wrongsec_check(rqstp))
|
|
op->status = check_nfsd_access(current_fh->fh_export, rqstp);
|
|
}
|
|
|
|
encode_op:
|
|
/* Only from SEQUENCE */
|
|
if (cstate->status == nfserr_replay_cache) {
|
|
dprintk("%s NFS4.1 replay from cache\n", __func__);
|
|
status = op->status;
|
|
goto out;
|
|
}
|
|
if (op->status == nfserr_replay_me) {
|
|
op->replay = &cstate->replay_owner->so_replay;
|
|
nfsd4_encode_replay(&resp->xdr, op);
|
|
status = op->status = op->replay->rp_status;
|
|
} else {
|
|
nfsd4_encode_operation(resp, op);
|
|
status = op->status;
|
|
}
|
|
|
|
dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
|
|
args->ops, args->opcnt, resp->opcnt, op->opnum,
|
|
be32_to_cpu(status));
|
|
|
|
nfsd4_cstate_clear_replay(cstate);
|
|
nfsd4_increment_op_stats(op->opnum);
|
|
}
|
|
|
|
cstate->status = status;
|
|
fh_put(current_fh);
|
|
fh_put(save_fh);
|
|
BUG_ON(cstate->replay_owner);
|
|
out:
|
|
/* Reset deferral mechanism for RPC deferrals */
|
|
set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
|
|
dprintk("nfsv4 compound returned %d\n", ntohl(status));
|
|
return status;
|
|
}
|
|
|
|
#define op_encode_hdr_size (2)
|
|
#define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
|
|
#define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
|
|
#define op_encode_change_info_maxsz (5)
|
|
#define nfs4_fattr_bitmap_maxsz (4)
|
|
|
|
/* We'll fall back on returning no lockowner if run out of space: */
|
|
#define op_encode_lockowner_maxsz (0)
|
|
#define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
|
|
|
|
#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
|
|
|
|
#define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
|
|
#define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
|
|
op_encode_ace_maxsz)
|
|
|
|
#define op_encode_channel_attrs_maxsz (6 + 1 + 1)
|
|
|
|
static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz
|
|
+ nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
/*
|
|
* Note since this is an idempotent operation we won't insist on failing
|
|
* the op prematurely if the estimate is too large. We may turn off splice
|
|
* reads unnecessarily.
|
|
*/
|
|
static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp,
|
|
struct nfsd4_op *op)
|
|
{
|
|
u32 *bmap = op->u.getattr.ga_bmval;
|
|
u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2];
|
|
u32 ret = 0;
|
|
|
|
if (bmap0 & FATTR4_WORD0_ACL)
|
|
return svc_max_payload(rqstp);
|
|
if (bmap0 & FATTR4_WORD0_FS_LOCATIONS)
|
|
return svc_max_payload(rqstp);
|
|
|
|
if (bmap1 & FATTR4_WORD1_OWNER) {
|
|
ret += IDMAP_NAMESZ + 4;
|
|
bmap1 &= ~FATTR4_WORD1_OWNER;
|
|
}
|
|
if (bmap1 & FATTR4_WORD1_OWNER_GROUP) {
|
|
ret += IDMAP_NAMESZ + 4;
|
|
bmap1 &= ~FATTR4_WORD1_OWNER_GROUP;
|
|
}
|
|
if (bmap0 & FATTR4_WORD0_FILEHANDLE) {
|
|
ret += NFS4_FHSIZE + 4;
|
|
bmap0 &= ~FATTR4_WORD0_FILEHANDLE;
|
|
}
|
|
if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) {
|
|
ret += NFS4_MAXLABELLEN + 12;
|
|
bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL;
|
|
}
|
|
/*
|
|
* Largest of remaining attributes are 16 bytes (e.g.,
|
|
* supported_attributes)
|
|
*/
|
|
ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2));
|
|
/* bitmask, length */
|
|
ret += 20;
|
|
return ret;
|
|
}
|
|
|
|
static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_stateid_maxsz
|
|
+ op_encode_change_info_maxsz + 1
|
|
+ nfs4_fattr_bitmap_maxsz
|
|
+ op_encode_delegation_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
u32 maxcount = 0, rlen = 0;
|
|
|
|
maxcount = svc_max_payload(rqstp);
|
|
rlen = min(op->u.read.rd_length, maxcount);
|
|
|
|
return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
u32 maxcount = 0, rlen = 0;
|
|
|
|
maxcount = svc_max_payload(rqstp);
|
|
rlen = min(op->u.readdir.rd_maxcount, maxcount);
|
|
|
|
return (op_encode_hdr_size + op_encode_verifier_maxsz +
|
|
XDR_QUADLEN(rlen)) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz
|
|
+ op_encode_change_info_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp,
|
|
struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size
|
|
+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
|
|
sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
|
|
1 + 1 + /* eir_flags, spr_how */\
|
|
4 + /* spo_must_enforce & _allow with bitmap */\
|
|
2 + /*eir_server_owner.so_minor_id */\
|
|
/* eir_server_owner.so_major_id<> */\
|
|
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
|
|
/* eir_server_scope<> */\
|
|
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
|
|
1 + /* eir_server_impl_id array length */\
|
|
0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + \
|
|
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
|
|
2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + \
|
|
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
|
|
2 + /* csr_sequence, csr_flags */\
|
|
op_encode_channel_attrs_maxsz + \
|
|
op_encode_channel_attrs_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_copy_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size +
|
|
1 /* wr_callback */ +
|
|
op_encode_stateid_maxsz /* wr_callback */ +
|
|
2 /* wr_count */ +
|
|
1 /* wr_committed */ +
|
|
op_encode_verifier_maxsz +
|
|
1 /* cr_consecutive */ +
|
|
1 /* cr_synchronous */) * sizeof(__be32);
|
|
}
|
|
|
|
#ifdef CONFIG_NFSD_PNFS
|
|
/*
|
|
* At this stage we don't really know what layout driver will handle the request,
|
|
* so we need to define an arbitrary upper bound here.
|
|
*/
|
|
#define MAX_LAYOUT_SIZE 128
|
|
static inline u32 nfsd4_layoutget_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size +
|
|
1 /* logr_return_on_close */ +
|
|
op_encode_stateid_maxsz +
|
|
1 /* nr of layouts */ +
|
|
MAX_LAYOUT_SIZE) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_layoutcommit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size +
|
|
1 /* locr_newsize */ +
|
|
2 /* ns_size */) * sizeof(__be32);
|
|
}
|
|
|
|
static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size +
|
|
1 /* lrs_stateid */ +
|
|
op_encode_stateid_maxsz) * sizeof(__be32);
|
|
}
|
|
#endif /* CONFIG_NFSD_PNFS */
|
|
|
|
static struct nfsd4_operation nfsd4_ops[] = {
|
|
[OP_ACCESS] = {
|
|
.op_func = (nfsd4op_func)nfsd4_access,
|
|
.op_name = "OP_ACCESS",
|
|
},
|
|
[OP_CLOSE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_close,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_CLOSE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
|
|
.op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
|
|
.op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
|
|
},
|
|
[OP_COMMIT] = {
|
|
.op_func = (nfsd4op_func)nfsd4_commit,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_COMMIT",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
|
|
},
|
|
[OP_CREATE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_create,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
|
|
.op_name = "OP_CREATE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
|
|
},
|
|
[OP_DELEGRETURN] = {
|
|
.op_func = (nfsd4op_func)nfsd4_delegreturn,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_DELEGRETURN",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
.op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
|
|
},
|
|
[OP_GETATTR] = {
|
|
.op_func = (nfsd4op_func)nfsd4_getattr,
|
|
.op_flags = ALLOWED_ON_ABSENT_FS,
|
|
.op_rsize_bop = nfsd4_getattr_rsize,
|
|
.op_name = "OP_GETATTR",
|
|
},
|
|
[OP_GETFH] = {
|
|
.op_func = (nfsd4op_func)nfsd4_getfh,
|
|
.op_name = "OP_GETFH",
|
|
},
|
|
[OP_LINK] = {
|
|
.op_func = (nfsd4op_func)nfsd4_link,
|
|
.op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
|
|
| OP_CACHEME,
|
|
.op_name = "OP_LINK",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
|
|
},
|
|
[OP_LOCK] = {
|
|
.op_func = (nfsd4op_func)nfsd4_lock,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LOCK",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
|
|
.op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
|
|
},
|
|
[OP_LOCKT] = {
|
|
.op_func = (nfsd4op_func)nfsd4_lockt,
|
|
.op_name = "OP_LOCKT",
|
|
},
|
|
[OP_LOCKU] = {
|
|
.op_func = (nfsd4op_func)nfsd4_locku,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LOCKU",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
|
|
.op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
|
|
},
|
|
[OP_LOOKUP] = {
|
|
.op_func = (nfsd4op_func)nfsd4_lookup,
|
|
.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
|
|
.op_name = "OP_LOOKUP",
|
|
},
|
|
[OP_LOOKUPP] = {
|
|
.op_func = (nfsd4op_func)nfsd4_lookupp,
|
|
.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
|
|
.op_name = "OP_LOOKUPP",
|
|
},
|
|
[OP_NVERIFY] = {
|
|
.op_func = (nfsd4op_func)nfsd4_nverify,
|
|
.op_name = "OP_NVERIFY",
|
|
},
|
|
[OP_OPEN] = {
|
|
.op_func = (nfsd4op_func)nfsd4_open,
|
|
.op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_OPEN",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
|
|
.op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
|
|
},
|
|
[OP_OPEN_CONFIRM] = {
|
|
.op_func = (nfsd4op_func)nfsd4_open_confirm,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_OPEN_CONFIRM",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
|
|
},
|
|
[OP_OPEN_DOWNGRADE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_open_downgrade,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_OPEN_DOWNGRADE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
|
|
.op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
|
|
.op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
|
|
},
|
|
[OP_PUTFH] = {
|
|
.op_func = (nfsd4op_func)nfsd4_putfh,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
|
|
.op_name = "OP_PUTFH",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_PUTPUBFH] = {
|
|
.op_func = (nfsd4op_func)nfsd4_putrootfh,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
|
|
.op_name = "OP_PUTPUBFH",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_PUTROOTFH] = {
|
|
.op_func = (nfsd4op_func)nfsd4_putrootfh,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
|
|
.op_name = "OP_PUTROOTFH",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_READ] = {
|
|
.op_func = (nfsd4op_func)nfsd4_read,
|
|
.op_name = "OP_READ",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
|
|
.op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
|
|
},
|
|
[OP_READDIR] = {
|
|
.op_func = (nfsd4op_func)nfsd4_readdir,
|
|
.op_name = "OP_READDIR",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
|
|
},
|
|
[OP_READLINK] = {
|
|
.op_func = (nfsd4op_func)nfsd4_readlink,
|
|
.op_name = "OP_READLINK",
|
|
},
|
|
[OP_REMOVE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_remove,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_REMOVE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
|
|
},
|
|
[OP_RENAME] = {
|
|
.op_func = (nfsd4op_func)nfsd4_rename,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_RENAME",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
|
|
},
|
|
[OP_RENEW] = {
|
|
.op_func = (nfsd4op_func)nfsd4_renew,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_RENEW",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
|
|
},
|
|
[OP_RESTOREFH] = {
|
|
.op_func = (nfsd4op_func)nfsd4_restorefh,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_RESTOREFH",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_SAVEFH] = {
|
|
.op_func = (nfsd4op_func)nfsd4_savefh,
|
|
.op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_SAVEFH",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_SECINFO] = {
|
|
.op_func = (nfsd4op_func)nfsd4_secinfo,
|
|
.op_flags = OP_HANDLES_WRONGSEC,
|
|
.op_name = "OP_SECINFO",
|
|
},
|
|
[OP_SETATTR] = {
|
|
.op_func = (nfsd4op_func)nfsd4_setattr,
|
|
.op_name = "OP_SETATTR",
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
|
|
.op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
|
|
},
|
|
[OP_SETCLIENTID] = {
|
|
.op_func = (nfsd4op_func)nfsd4_setclientid,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_SETCLIENTID",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
|
|
},
|
|
[OP_SETCLIENTID_CONFIRM] = {
|
|
.op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_SETCLIENTID_CONFIRM",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_VERIFY] = {
|
|
.op_func = (nfsd4op_func)nfsd4_verify,
|
|
.op_name = "OP_VERIFY",
|
|
},
|
|
[OP_WRITE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_write,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_WRITE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
|
|
.op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
|
|
},
|
|
[OP_RELEASE_LOCKOWNER] = {
|
|
.op_func = (nfsd4op_func)nfsd4_release_lockowner,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_RELEASE_LOCKOWNER",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
|
|
/* NFSv4.1 operations */
|
|
[OP_EXCHANGE_ID] = {
|
|
.op_func = (nfsd4op_func)nfsd4_exchange_id,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_EXCHANGE_ID",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
|
|
},
|
|
[OP_BACKCHANNEL_CTL] = {
|
|
.op_func = (nfsd4op_func)nfsd4_backchannel_ctl,
|
|
.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_BACKCHANNEL_CTL",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_BIND_CONN_TO_SESSION] = {
|
|
.op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_BIND_CONN_TO_SESSION",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
|
|
},
|
|
[OP_CREATE_SESSION] = {
|
|
.op_func = (nfsd4op_func)nfsd4_create_session,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_CREATE_SESSION",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
|
|
},
|
|
[OP_DESTROY_SESSION] = {
|
|
.op_func = (nfsd4op_func)nfsd4_destroy_session,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_DESTROY_SESSION",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_SEQUENCE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_sequence,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
|
|
.op_name = "OP_SEQUENCE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_sequence_rsize,
|
|
},
|
|
[OP_DESTROY_CLIENTID] = {
|
|
.op_func = (nfsd4op_func)nfsd4_destroy_clientid,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_DESTROY_CLIENTID",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_RECLAIM_COMPLETE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_reclaim_complete,
|
|
.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_RECLAIM_COMPLETE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_SECINFO_NO_NAME] = {
|
|
.op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
|
|
.op_flags = OP_HANDLES_WRONGSEC,
|
|
.op_name = "OP_SECINFO_NO_NAME",
|
|
},
|
|
[OP_TEST_STATEID] = {
|
|
.op_func = (nfsd4op_func)nfsd4_test_stateid,
|
|
.op_flags = ALLOWED_WITHOUT_FH,
|
|
.op_name = "OP_TEST_STATEID",
|
|
},
|
|
[OP_FREE_STATEID] = {
|
|
.op_func = (nfsd4op_func)nfsd4_free_stateid,
|
|
.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_FREE_STATEID",
|
|
.op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid,
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
#ifdef CONFIG_NFSD_PNFS
|
|
[OP_GETDEVICEINFO] = {
|
|
.op_func = (nfsd4op_func)nfsd4_getdeviceinfo,
|
|
.op_flags = ALLOWED_WITHOUT_FH,
|
|
.op_name = "OP_GETDEVICEINFO",
|
|
},
|
|
[OP_LAYOUTGET] = {
|
|
.op_func = (nfsd4op_func)nfsd4_layoutget,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LAYOUTGET",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutget_rsize,
|
|
},
|
|
[OP_LAYOUTCOMMIT] = {
|
|
.op_func = (nfsd4op_func)nfsd4_layoutcommit,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LAYOUTCOMMIT",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutcommit_rsize,
|
|
},
|
|
[OP_LAYOUTRETURN] = {
|
|
.op_func = (nfsd4op_func)nfsd4_layoutreturn,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LAYOUTRETURN",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutreturn_rsize,
|
|
},
|
|
#endif /* CONFIG_NFSD_PNFS */
|
|
|
|
/* NFSv4.2 operations */
|
|
[OP_ALLOCATE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_allocate,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_ALLOCATE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_DEALLOCATE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_deallocate,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_DEALLOCATE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_CLONE] = {
|
|
.op_func = (nfsd4op_func)nfsd4_clone,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_CLONE",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
|
|
},
|
|
[OP_COPY] = {
|
|
.op_func = (nfsd4op_func)nfsd4_copy,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_COPY",
|
|
.op_rsize_bop = (nfsd4op_rsize)nfsd4_copy_rsize,
|
|
},
|
|
[OP_SEEK] = {
|
|
.op_func = (nfsd4op_func)nfsd4_seek,
|
|
.op_name = "OP_SEEK",
|
|
},
|
|
};
|
|
|
|
/**
|
|
* nfsd4_spo_must_allow - Determine if the compound op contains an
|
|
* operation that is allowed to be sent with machine credentials
|
|
*
|
|
* @rqstp: a pointer to the struct svc_rqst
|
|
*
|
|
* Checks to see if the compound contains a spo_must_allow op
|
|
* and confirms that it was sent with the proper machine creds.
|
|
*/
|
|
|
|
bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd4_compoundres *resp = rqstp->rq_resp;
|
|
struct nfsd4_compoundargs *argp = rqstp->rq_argp;
|
|
struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
|
|
struct nfsd4_compound_state *cstate = &resp->cstate;
|
|
struct nfs4_op_map *allow = &cstate->clp->cl_spo_must_allow;
|
|
u32 opiter;
|
|
|
|
if (!cstate->minorversion)
|
|
return false;
|
|
|
|
if (cstate->spo_must_allowed == true)
|
|
return true;
|
|
|
|
opiter = resp->opcnt;
|
|
while (opiter < argp->opcnt) {
|
|
this = &argp->ops[opiter++];
|
|
if (test_bit(this->opnum, allow->u.longs) &&
|
|
cstate->clp->cl_mach_cred &&
|
|
nfsd4_mach_creds_match(cstate->clp, rqstp)) {
|
|
cstate->spo_must_allowed = true;
|
|
return true;
|
|
}
|
|
}
|
|
cstate->spo_must_allowed = false;
|
|
return false;
|
|
}
|
|
|
|
int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
|
|
{
|
|
struct nfsd4_operation *opdesc;
|
|
nfsd4op_rsize estimator;
|
|
|
|
if (op->opnum == OP_ILLEGAL)
|
|
return op_encode_hdr_size * sizeof(__be32);
|
|
opdesc = OPDESC(op);
|
|
estimator = opdesc->op_rsize_bop;
|
|
return estimator ? estimator(rqstp, op) : PAGE_SIZE;
|
|
}
|
|
|
|
void warn_on_nonidempotent_op(struct nfsd4_op *op)
|
|
{
|
|
if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) {
|
|
pr_err("unable to encode reply to nonidempotent op %d (%s)\n",
|
|
op->opnum, nfsd4_op_name(op->opnum));
|
|
WARN_ON_ONCE(1);
|
|
}
|
|
}
|
|
|
|
static const char *nfsd4_op_name(unsigned opnum)
|
|
{
|
|
if (opnum < ARRAY_SIZE(nfsd4_ops))
|
|
return nfsd4_ops[opnum].op_name;
|
|
return "unknown_operation";
|
|
}
|
|
|
|
#define nfsd4_voidres nfsd4_voidargs
|
|
struct nfsd4_voidargs { int dummy; };
|
|
|
|
static struct svc_procedure nfsd_procedures4[2] = {
|
|
[NFSPROC4_NULL] = {
|
|
.pc_func = (svc_procfunc) nfsd4_proc_null,
|
|
.pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
|
|
.pc_argsize = sizeof(struct nfsd4_voidargs),
|
|
.pc_ressize = sizeof(struct nfsd4_voidres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = 1,
|
|
},
|
|
[NFSPROC4_COMPOUND] = {
|
|
.pc_func = (svc_procfunc) nfsd4_proc_compound,
|
|
.pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
|
|
.pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
|
|
.pc_argsize = sizeof(struct nfsd4_compoundargs),
|
|
.pc_ressize = sizeof(struct nfsd4_compoundres),
|
|
.pc_release = nfsd4_release_compoundargs,
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = NFSD_BUFSIZE/4,
|
|
},
|
|
};
|
|
|
|
struct svc_version nfsd_version4 = {
|
|
.vs_vers = 4,
|
|
.vs_nproc = 2,
|
|
.vs_proc = nfsd_procedures4,
|
|
.vs_dispatch = nfsd_dispatch,
|
|
.vs_xdrsize = NFS4_SVC_XDRSIZE,
|
|
.vs_rpcb_optnl = 1,
|
|
};
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|