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![Dai Ngo](/assets/img/avatar_default.png)
When nfsd4_copy fails to allocate memory for async_copy->cp_src, or nfs4_init_copy_state fails, it calls cleanup_async_copy to do the cleanup for the async_copy which causes page fault since async_copy is not yet initialized. This patche rearranges the order of initializing the fields in async_copy and adds checks in cleanup_async_copy to skip un-initialized fields. Fixes:ce0887ac96
("NFSD add nfs4 inter ssc to nfsd4_copy") Fixes:87689df694
("NFSD: Shrink size of struct nfsd4_copy") Signed-off-by: Dai Ngo <dai.ngo@oracle.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
3630 lines
97 KiB
C
3630 lines
97 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/fs_struct.h>
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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 <linux/kthread.h>
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#include <linux/namei.h>
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#include <linux/sunrpc/addr.h>
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#include <linux/nfs_ssc.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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static bool inter_copy_offload_enable;
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module_param(inter_copy_offload_enable, bool, 0644);
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MODULE_PARM_DESC(inter_copy_offload_enable,
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"Enable inter server to server copy offload. Default: false");
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#ifdef CONFIG_NFSD_V4_2_INTER_SSC
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static int nfsd4_ssc_umount_timeout = 900000; /* default to 15 mins */
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module_param(nfsd4_ssc_umount_timeout, int, 0644);
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MODULE_PARM_DESC(nfsd4_ssc_umount_timeout,
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"idle msecs before unmount export from source server");
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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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struct svc_export *exp = cstate->current_fh.fh_export;
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if (!nfsd_attrs_supported(cstate->minorversion, bmval))
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return nfserr_attrnotsupp;
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if ((bmval[0] & FATTR4_WORD0_ACL) && !IS_POSIXACL(d_inode(dentry)))
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return nfserr_attrnotsupp;
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if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) &&
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!(exp->ex_flags & NFSEXP_SECURITY_LABEL))
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return nfserr_attrnotsupp;
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if (writable && !bmval_is_subset(bmval, writable))
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return nfserr_inval;
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if (writable && (bmval[2] & FATTR4_WORD2_MODE_UMASK) &&
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(bmval[1] & FATTR4_WORD1_MODE))
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return nfserr_inval;
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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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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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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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return fh_verify(rqstp, current_fh, S_IFREG, accmode);
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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 inline bool nfsd4_create_is_exclusive(int createmode)
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{
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return createmode == NFS4_CREATE_EXCLUSIVE ||
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createmode == NFS4_CREATE_EXCLUSIVE4_1;
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}
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static __be32
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nfsd4_vfs_create(struct svc_fh *fhp, struct dentry *child,
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struct nfsd4_open *open)
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{
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struct file *filp;
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struct path path;
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int oflags;
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oflags = O_CREAT | O_LARGEFILE;
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switch (open->op_share_access & NFS4_SHARE_ACCESS_BOTH) {
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case NFS4_SHARE_ACCESS_WRITE:
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oflags |= O_WRONLY;
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break;
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case NFS4_SHARE_ACCESS_BOTH:
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oflags |= O_RDWR;
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break;
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default:
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oflags |= O_RDONLY;
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}
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path.mnt = fhp->fh_export->ex_path.mnt;
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path.dentry = child;
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filp = dentry_create(&path, oflags, open->op_iattr.ia_mode,
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current_cred());
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if (IS_ERR(filp))
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return nfserrno(PTR_ERR(filp));
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open->op_filp = filp;
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return nfs_ok;
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}
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/*
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* Implement NFSv4's unchecked, guarded, and exclusive create
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* semantics for regular files. Open state for this new file is
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* subsequently fabricated in nfsd4_process_open2().
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*
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* Upon return, caller must release @fhp and @resfhp.
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*/
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static __be32
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nfsd4_create_file(struct svc_rqst *rqstp, struct svc_fh *fhp,
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struct svc_fh *resfhp, struct nfsd4_open *open)
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{
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struct iattr *iap = &open->op_iattr;
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struct nfsd_attrs attrs = {
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.na_iattr = iap,
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.na_seclabel = &open->op_label,
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};
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struct dentry *parent, *child;
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__u32 v_mtime, v_atime;
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struct inode *inode;
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__be32 status;
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int host_err;
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if (isdotent(open->op_fname, open->op_fnamelen))
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return nfserr_exist;
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if (!(iap->ia_valid & ATTR_MODE))
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iap->ia_mode = 0;
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status = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_EXEC);
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if (status != nfs_ok)
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return status;
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parent = fhp->fh_dentry;
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inode = d_inode(parent);
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host_err = fh_want_write(fhp);
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if (host_err)
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return nfserrno(host_err);
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if (is_create_with_attrs(open))
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nfsd4_acl_to_attr(NF4REG, open->op_acl, &attrs);
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inode_lock_nested(inode, I_MUTEX_PARENT);
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child = lookup_one_len(open->op_fname, parent, open->op_fnamelen);
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if (IS_ERR(child)) {
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status = nfserrno(PTR_ERR(child));
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goto out;
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}
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if (d_really_is_negative(child)) {
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status = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_CREATE);
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if (status != nfs_ok)
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goto out;
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}
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status = fh_compose(resfhp, fhp->fh_export, child, fhp);
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if (status != nfs_ok)
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goto out;
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v_mtime = 0;
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v_atime = 0;
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if (nfsd4_create_is_exclusive(open->op_createmode)) {
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u32 *verifier = (u32 *)open->op_verf.data;
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/*
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* Solaris 7 gets confused (bugid 4218508) if these have
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* the high bit set, as do xfs filesystems without the
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* "bigtime" feature. So just clear the high bits. If this
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* is ever changed to use different attrs for storing the
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* verifier, then do_open_lookup() will also need to be
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* fixed accordingly.
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*/
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v_mtime = verifier[0] & 0x7fffffff;
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v_atime = verifier[1] & 0x7fffffff;
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}
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if (d_really_is_positive(child)) {
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status = nfs_ok;
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/* NFSv4 protocol requires change attributes even though
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* no change happened.
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*/
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fh_fill_both_attrs(fhp);
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switch (open->op_createmode) {
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case NFS4_CREATE_UNCHECKED:
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if (!d_is_reg(child))
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break;
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/*
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* In NFSv4, we don't want to truncate the file
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* now. This would be wrong if the OPEN fails for
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* some other reason. Furthermore, if the size is
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* nonzero, we should ignore it according to spec!
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*/
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open->op_truncate = (iap->ia_valid & ATTR_SIZE) &&
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!iap->ia_size;
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break;
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case NFS4_CREATE_GUARDED:
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status = nfserr_exist;
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break;
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case NFS4_CREATE_EXCLUSIVE:
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if (d_inode(child)->i_mtime.tv_sec == v_mtime &&
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d_inode(child)->i_atime.tv_sec == v_atime &&
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d_inode(child)->i_size == 0) {
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open->op_created = true;
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break; /* subtle */
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}
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status = nfserr_exist;
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break;
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case NFS4_CREATE_EXCLUSIVE4_1:
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if (d_inode(child)->i_mtime.tv_sec == v_mtime &&
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d_inode(child)->i_atime.tv_sec == v_atime &&
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d_inode(child)->i_size == 0) {
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open->op_created = true;
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goto set_attr; /* subtle */
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}
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status = nfserr_exist;
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}
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goto out;
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}
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if (!IS_POSIXACL(inode))
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iap->ia_mode &= ~current_umask();
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fh_fill_pre_attrs(fhp);
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status = nfsd4_vfs_create(fhp, child, open);
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if (status != nfs_ok)
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goto out;
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open->op_created = true;
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fh_fill_post_attrs(fhp);
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/* A newly created file already has a file size of zero. */
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if ((iap->ia_valid & ATTR_SIZE) && (iap->ia_size == 0))
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iap->ia_valid &= ~ATTR_SIZE;
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if (nfsd4_create_is_exclusive(open->op_createmode)) {
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iap->ia_valid = ATTR_MTIME | ATTR_ATIME |
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ATTR_MTIME_SET|ATTR_ATIME_SET;
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iap->ia_mtime.tv_sec = v_mtime;
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iap->ia_atime.tv_sec = v_atime;
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iap->ia_mtime.tv_nsec = 0;
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iap->ia_atime.tv_nsec = 0;
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}
|
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|
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set_attr:
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status = nfsd_create_setattr(rqstp, fhp, resfhp, &attrs);
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|
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if (attrs.na_labelerr)
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open->op_bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
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if (attrs.na_aclerr)
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open->op_bmval[0] &= ~FATTR4_WORD0_ACL;
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out:
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inode_unlock(inode);
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nfsd_attrs_free(&attrs);
|
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if (child && !IS_ERR(child))
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dput(child);
|
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fh_drop_write(fhp);
|
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return status;
|
|
}
|
|
|
|
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)
|
|
{
|
|
struct svc_fh *current_fh = &cstate->current_fh;
|
|
int accmode;
|
|
__be32 status;
|
|
|
|
*resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
|
|
if (!*resfh)
|
|
return nfserr_jukebox;
|
|
fh_init(*resfh, NFS4_FHSIZE);
|
|
open->op_truncate = false;
|
|
|
|
if (open->op_create) {
|
|
/* FIXME: check session persistence and pnfs flags.
|
|
* The nfsv4.1 spec requires the following semantics:
|
|
*
|
|
* Persistent | pNFS | Server REQUIRED | Client Allowed
|
|
* Reply Cache | server | |
|
|
* -------------+--------+-----------------+--------------------
|
|
* no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
|
|
* | | | (SHOULD)
|
|
* | | and EXCLUSIVE4 | or EXCLUSIVE4
|
|
* | | | (SHOULD NOT)
|
|
* no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
|
|
* yes | no | GUARDED4 | GUARDED4
|
|
* yes | yes | GUARDED4 | GUARDED4
|
|
*/
|
|
|
|
current->fs->umask = open->op_umask;
|
|
status = nfsd4_create_file(rqstp, current_fh, *resfh, open);
|
|
current->fs->umask = 0;
|
|
|
|
/*
|
|
* Following rfc 3530 14.2.16, and rfc 5661 18.16.4
|
|
* use the returned bitmask to indicate which attributes
|
|
* we used to store the verifier:
|
|
*/
|
|
if (nfsd4_create_is_exclusive(open->op_createmode) && status == 0)
|
|
open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS |
|
|
FATTR4_WORD1_TIME_MODIFY);
|
|
} else {
|
|
status = nfsd_lookup(rqstp, current_fh,
|
|
open->op_fname, open->op_fnamelen, *resfh);
|
|
if (!status)
|
|
/* NFSv4 protocol requires change attributes even though
|
|
* no change happened.
|
|
*/
|
|
fh_fill_both_attrs(current_fh);
|
|
}
|
|
if (status)
|
|
goto out;
|
|
status = nfsd_check_obj_isreg(*resfh);
|
|
if (status)
|
|
goto out;
|
|
|
|
nfsd4_set_open_owner_reply_cache(cstate, open, *resfh);
|
|
accmode = NFSD_MAY_NOP;
|
|
if (open->op_created ||
|
|
open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
|
|
accmode |= NFSD_MAY_OWNER_OVERRIDE;
|
|
status = do_open_permission(rqstp, *resfh, open, accmode);
|
|
set_change_info(&open->op_cinfo, current_fh);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
|
|
{
|
|
struct svc_fh *current_fh = &cstate->current_fh;
|
|
int accmode = 0;
|
|
|
|
/* We don't know the target directory, and therefore can not
|
|
* set the change info
|
|
*/
|
|
|
|
memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
|
|
|
|
nfsd4_set_open_owner_reply_cache(cstate, open, current_fh);
|
|
|
|
open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
|
|
(open->op_iattr.ia_size == 0);
|
|
/*
|
|
* In the delegation case, the client is telling us about an
|
|
* open that it *already* performed locally, some time ago. We
|
|
* should let it succeed now if possible.
|
|
*
|
|
* In the case of a CLAIM_FH open, on the other hand, the client
|
|
* may be counting on us to enforce permissions (the Linux 4.1
|
|
* client uses this for normal opens, for example).
|
|
*/
|
|
if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
|
|
accmode = NFSD_MAY_OWNER_OVERRIDE;
|
|
|
|
return do_open_permission(rqstp, current_fh, open, accmode);
|
|
}
|
|
|
|
static void
|
|
copy_clientid(clientid_t *clid, struct nfsd4_session *session)
|
|
{
|
|
struct nfsd4_sessionid *sid =
|
|
(struct nfsd4_sessionid *)session->se_sessionid.data;
|
|
|
|
clid->cl_boot = sid->clientid.cl_boot;
|
|
clid->cl_id = sid->clientid.cl_id;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_open *open = &u->open;
|
|
__be32 status;
|
|
struct svc_fh *resfh = NULL;
|
|
struct net *net = SVC_NET(rqstp);
|
|
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
|
|
bool reclaim = false;
|
|
|
|
dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
|
|
(int)open->op_fnamelen, open->op_fname,
|
|
open->op_openowner);
|
|
|
|
open->op_filp = NULL;
|
|
open->op_rqstp = rqstp;
|
|
|
|
/* This check required by spec. */
|
|
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
|
|
return nfserr_inval;
|
|
|
|
open->op_created = false;
|
|
/*
|
|
* 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->clp->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(cstate->clp);
|
|
if (status)
|
|
goto out;
|
|
open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
|
|
reclaim = true;
|
|
fallthrough;
|
|
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:
|
|
status = nfserr_notsupp;
|
|
goto out;
|
|
default:
|
|
status = nfserr_inval;
|
|
goto out;
|
|
}
|
|
|
|
status = nfsd4_process_open2(rqstp, resfh, open);
|
|
if (status && open->op_created)
|
|
pr_warn("nfsd4_process_open2 failed to open newly-created file: status=%u\n",
|
|
be32_to_cpu(status));
|
|
if (reclaim && !status)
|
|
nn->somebody_reclaimed = true;
|
|
out:
|
|
if (open->op_filp) {
|
|
fput(open->op_filp);
|
|
open->op_filp = NULL;
|
|
}
|
|
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 = &op->u.open;
|
|
|
|
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, &op->u);
|
|
}
|
|
|
|
/*
|
|
* filehandle-manipulating ops.
|
|
*/
|
|
static __be32
|
|
nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
u->getfh = &cstate->current_fh;
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_putfh *putfh = &u->putfh;
|
|
__be32 ret;
|
|
|
|
fh_put(&cstate->current_fh);
|
|
cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
|
|
memcpy(&cstate->current_fh.fh_handle.fh_raw, putfh->pf_fhval,
|
|
putfh->pf_fhlen);
|
|
ret = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
|
|
#ifdef CONFIG_NFSD_V4_2_INTER_SSC
|
|
if (ret == nfserr_stale && putfh->no_verify) {
|
|
SET_FH_FLAG(&cstate->current_fh, NFSD4_FH_FOREIGN);
|
|
ret = 0;
|
|
}
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
fh_put(&cstate->current_fh);
|
|
|
|
return exp_pseudoroot(rqstp, &cstate->current_fh);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
if (!cstate->save_fh.fh_dentry)
|
|
return nfserr_restorefh;
|
|
|
|
fh_dup2(&cstate->current_fh, &cstate->save_fh);
|
|
if (HAS_CSTATE_FLAG(cstate, SAVED_STATE_ID_FLAG)) {
|
|
memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
|
|
SET_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG);
|
|
}
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
fh_dup2(&cstate->save_fh, &cstate->current_fh);
|
|
if (HAS_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG)) {
|
|
memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
|
|
SET_CSTATE_FLAG(cstate, SAVED_STATE_ID_FLAG);
|
|
}
|
|
return nfs_ok;
|
|
}
|
|
|
|
/*
|
|
* misc nfsv4 ops
|
|
*/
|
|
static __be32
|
|
nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_access *access = &u->access;
|
|
u32 access_full;
|
|
|
|
access_full = NFS3_ACCESS_FULL;
|
|
if (cstate->minorversion >= 2)
|
|
access_full |= NFS4_ACCESS_XALIST | NFS4_ACCESS_XAREAD |
|
|
NFS4_ACCESS_XAWRITE;
|
|
|
|
if (access->ac_req_access & ~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 = (__be32 *)verifier->data;
|
|
|
|
BUILD_BUG_ON(2*sizeof(*verf) != sizeof(verifier->data));
|
|
|
|
nfsd_copy_write_verifier(verf, net_generic(net, nfsd_net_id));
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_commit *commit = &u->commit;
|
|
struct nfsd_file *nf;
|
|
__be32 status;
|
|
|
|
status = nfsd_file_acquire(rqstp, &cstate->current_fh, NFSD_MAY_WRITE |
|
|
NFSD_MAY_NOT_BREAK_LEASE, &nf);
|
|
if (status != nfs_ok)
|
|
return status;
|
|
|
|
status = nfsd_commit(rqstp, &cstate->current_fh, nf, commit->co_offset,
|
|
commit->co_count,
|
|
(__be32 *)commit->co_verf.data);
|
|
nfsd_file_put(nf);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_create *create = &u->create;
|
|
struct nfsd_attrs attrs = {
|
|
.na_iattr = &create->cr_iattr,
|
|
.na_seclabel = &create->cr_label,
|
|
};
|
|
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;
|
|
|
|
status = nfsd4_acl_to_attr(create->cr_type, create->cr_acl, &attrs);
|
|
current->fs->umask = create->cr_umask;
|
|
switch (create->cr_type) {
|
|
case NF4LNK:
|
|
status = nfsd_symlink(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
create->cr_data, &attrs, &resfh);
|
|
break;
|
|
|
|
case NF4BLK:
|
|
status = nfserr_inval;
|
|
rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
|
|
if (MAJOR(rdev) != create->cr_specdata1 ||
|
|
MINOR(rdev) != create->cr_specdata2)
|
|
goto out_umask;
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&attrs, S_IFBLK, rdev, &resfh);
|
|
break;
|
|
|
|
case NF4CHR:
|
|
status = nfserr_inval;
|
|
rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
|
|
if (MAJOR(rdev) != create->cr_specdata1 ||
|
|
MINOR(rdev) != create->cr_specdata2)
|
|
goto out_umask;
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&attrs, S_IFCHR, rdev, &resfh);
|
|
break;
|
|
|
|
case NF4SOCK:
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&attrs, S_IFSOCK, 0, &resfh);
|
|
break;
|
|
|
|
case NF4FIFO:
|
|
status = nfsd_create(rqstp, &cstate->current_fh,
|
|
create->cr_name, create->cr_namelen,
|
|
&attrs, 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,
|
|
&attrs, S_IFDIR, 0, &resfh);
|
|
break;
|
|
|
|
default:
|
|
status = nfserr_badtype;
|
|
}
|
|
|
|
if (status)
|
|
goto out;
|
|
|
|
if (attrs.na_labelerr)
|
|
create->cr_bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
|
|
if (attrs.na_aclerr)
|
|
create->cr_bmval[0] &= ~FATTR4_WORD0_ACL;
|
|
set_change_info(&create->cr_cinfo, &cstate->current_fh);
|
|
fh_dup2(&cstate->current_fh, &resfh);
|
|
out:
|
|
fh_put(&resfh);
|
|
out_umask:
|
|
current->fs->umask = 0;
|
|
nfsd_attrs_free(&attrs);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_getattr *getattr = &u->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_suppattrs[cstate->minorversion][0];
|
|
getattr->ga_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1];
|
|
getattr->ga_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2];
|
|
|
|
getattr->ga_fhp = &cstate->current_fh;
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_link *link = &u->link;
|
|
__be32 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,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
return nfsd_lookup(rqstp, &cstate->current_fh,
|
|
u->lookup.lo_name, u->lookup.lo_len,
|
|
&cstate->current_fh);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_read *read = &u->read;
|
|
__be32 status;
|
|
|
|
read->rd_nf = NULL;
|
|
|
|
trace_nfsd_read_start(rqstp, &cstate->current_fh,
|
|
read->rd_offset, read->rd_length);
|
|
|
|
read->rd_length = min_t(u32, read->rd_length, svc_max_payload(rqstp));
|
|
if (read->rd_offset > (u64)OFFSET_MAX)
|
|
read->rd_offset = (u64)OFFSET_MAX;
|
|
if (read->rd_offset + read->rd_length > (u64)OFFSET_MAX)
|
|
read->rd_length = (u64)OFFSET_MAX - read->rd_offset;
|
|
|
|
/*
|
|
* 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_nf, NULL);
|
|
|
|
read->rd_rqstp = rqstp;
|
|
read->rd_fhp = &cstate->current_fh;
|
|
return status;
|
|
}
|
|
|
|
|
|
static void
|
|
nfsd4_read_release(union nfsd4_op_u *u)
|
|
{
|
|
if (u->read.rd_nf)
|
|
nfsd_file_put(u->read.rd_nf);
|
|
trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp,
|
|
u->read.rd_offset, u->read.rd_length);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_readdir *readdir = &u->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_suppattrs[cstate->minorversion][0];
|
|
readdir->rd_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1];
|
|
readdir->rd_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2];
|
|
|
|
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,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
u->readlink.rl_rqstp = rqstp;
|
|
u->readlink.rl_fhp = &cstate->current_fh;
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_remove *remove = &u->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)
|
|
set_change_info(&remove->rm_cinfo, &cstate->current_fh);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_rename *rename = &u->rename;
|
|
__be32 status;
|
|
|
|
if (opens_in_grace(SVC_NET(rqstp)))
|
|
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,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_secinfo *secinfo = &u->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;
|
|
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,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
__be32 err;
|
|
|
|
switch (u->secinfo_no_name.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;
|
|
}
|
|
|
|
u->secinfo_no_name.sin_exp = exp_get(cstate->current_fh.fh_export);
|
|
fh_put(&cstate->current_fh);
|
|
return nfs_ok;
|
|
}
|
|
|
|
static void
|
|
nfsd4_secinfo_release(union nfsd4_op_u *u)
|
|
{
|
|
if (u->secinfo.si_exp)
|
|
exp_put(u->secinfo.si_exp);
|
|
}
|
|
|
|
static void
|
|
nfsd4_secinfo_no_name_release(union nfsd4_op_u *u)
|
|
{
|
|
if (u->secinfo_no_name.sin_exp)
|
|
exp_put(u->secinfo_no_name.sin_exp);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_setattr *setattr = &u->setattr;
|
|
struct nfsd_attrs attrs = {
|
|
.na_iattr = &setattr->sa_iattr,
|
|
.na_seclabel = &setattr->sa_label,
|
|
};
|
|
struct inode *inode;
|
|
__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)
|
|
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;
|
|
|
|
inode = cstate->current_fh.fh_dentry->d_inode;
|
|
status = nfsd4_acl_to_attr(S_ISDIR(inode->i_mode) ? NF4DIR : NF4REG,
|
|
setattr->sa_acl, &attrs);
|
|
|
|
if (status)
|
|
goto out;
|
|
status = nfsd_setattr(rqstp, &cstate->current_fh, &attrs,
|
|
0, (time64_t)0);
|
|
if (!status)
|
|
status = nfserrno(attrs.na_labelerr);
|
|
if (!status)
|
|
status = nfserrno(attrs.na_aclerr);
|
|
out:
|
|
nfsd_attrs_free(&attrs);
|
|
fh_drop_write(&cstate->current_fh);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_write *write = &u->write;
|
|
stateid_t *stateid = &write->wr_stateid;
|
|
struct nfsd_file *nf = NULL;
|
|
__be32 status = nfs_ok;
|
|
unsigned long cnt;
|
|
int nvecs;
|
|
|
|
if (write->wr_offset > (u64)OFFSET_MAX ||
|
|
write->wr_offset + write->wr_buflen > (u64)OFFSET_MAX)
|
|
return nfserr_fbig;
|
|
|
|
cnt = write->wr_buflen;
|
|
trace_nfsd_write_start(rqstp, &cstate->current_fh,
|
|
write->wr_offset, cnt);
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
stateid, WR_STATE, &nf, NULL);
|
|
if (status)
|
|
return status;
|
|
|
|
write->wr_how_written = write->wr_stable_how;
|
|
|
|
nvecs = svc_fill_write_vector(rqstp, &write->wr_payload);
|
|
WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
|
|
|
|
status = nfsd_vfs_write(rqstp, &cstate->current_fh, nf,
|
|
write->wr_offset, rqstp->rq_vec, nvecs, &cnt,
|
|
write->wr_how_written,
|
|
(__be32 *)write->wr_verifier.data);
|
|
nfsd_file_put(nf);
|
|
|
|
write->wr_bytes_written = cnt;
|
|
trace_nfsd_write_done(rqstp, &cstate->current_fh,
|
|
write->wr_offset, cnt);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
stateid_t *src_stateid, struct nfsd_file **src,
|
|
stateid_t *dst_stateid, struct nfsd_file **dst)
|
|
{
|
|
__be32 status;
|
|
|
|
if (!cstate->save_fh.fh_dentry)
|
|
return nfserr_nofilehandle;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh,
|
|
src_stateid, RD_STATE, src, NULL);
|
|
if (status)
|
|
goto out;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
dst_stateid, WR_STATE, dst, NULL);
|
|
if (status)
|
|
goto out_put_src;
|
|
|
|
/* fix up for NFS-specific error code */
|
|
if (!S_ISREG(file_inode((*src)->nf_file)->i_mode) ||
|
|
!S_ISREG(file_inode((*dst)->nf_file)->i_mode)) {
|
|
status = nfserr_wrong_type;
|
|
goto out_put_dst;
|
|
}
|
|
|
|
out:
|
|
return status;
|
|
out_put_dst:
|
|
nfsd_file_put(*dst);
|
|
*dst = NULL;
|
|
out_put_src:
|
|
nfsd_file_put(*src);
|
|
*src = NULL;
|
|
goto out;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_clone *clone = &u->clone;
|
|
struct nfsd_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(rqstp, src, clone->cl_src_pos,
|
|
dst, clone->cl_dst_pos, clone->cl_count,
|
|
EX_ISSYNC(cstate->current_fh.fh_export));
|
|
|
|
nfsd_file_put(dst);
|
|
nfsd_file_put(src);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static void nfs4_put_copy(struct nfsd4_copy *copy)
|
|
{
|
|
if (!refcount_dec_and_test(©->refcount))
|
|
return;
|
|
kfree(copy->cp_src);
|
|
kfree(copy);
|
|
}
|
|
|
|
static void nfsd4_stop_copy(struct nfsd4_copy *copy)
|
|
{
|
|
if (!test_and_set_bit(NFSD4_COPY_F_STOPPED, ©->cp_flags))
|
|
kthread_stop(copy->copy_task);
|
|
nfs4_put_copy(copy);
|
|
}
|
|
|
|
static struct nfsd4_copy *nfsd4_get_copy(struct nfs4_client *clp)
|
|
{
|
|
struct nfsd4_copy *copy = NULL;
|
|
|
|
spin_lock(&clp->async_lock);
|
|
if (!list_empty(&clp->async_copies)) {
|
|
copy = list_first_entry(&clp->async_copies, struct nfsd4_copy,
|
|
copies);
|
|
refcount_inc(©->refcount);
|
|
}
|
|
spin_unlock(&clp->async_lock);
|
|
return copy;
|
|
}
|
|
|
|
void nfsd4_shutdown_copy(struct nfs4_client *clp)
|
|
{
|
|
struct nfsd4_copy *copy;
|
|
|
|
while ((copy = nfsd4_get_copy(clp)) != NULL)
|
|
nfsd4_stop_copy(copy);
|
|
}
|
|
#ifdef CONFIG_NFSD_V4_2_INTER_SSC
|
|
|
|
extern struct file *nfs42_ssc_open(struct vfsmount *ss_mnt,
|
|
struct nfs_fh *src_fh,
|
|
nfs4_stateid *stateid);
|
|
extern void nfs42_ssc_close(struct file *filep);
|
|
|
|
extern void nfs_sb_deactive(struct super_block *sb);
|
|
|
|
#define NFSD42_INTERSSC_MOUNTOPS "vers=4.2,addr=%s,sec=sys"
|
|
|
|
/*
|
|
* setup a work entry in the ssc delayed unmount list.
|
|
*/
|
|
static __be32 nfsd4_ssc_setup_dul(struct nfsd_net *nn, char *ipaddr,
|
|
struct nfsd4_ssc_umount_item **nsui)
|
|
{
|
|
struct nfsd4_ssc_umount_item *ni = NULL;
|
|
struct nfsd4_ssc_umount_item *work = NULL;
|
|
struct nfsd4_ssc_umount_item *tmp;
|
|
DEFINE_WAIT(wait);
|
|
__be32 status = 0;
|
|
|
|
*nsui = NULL;
|
|
work = kzalloc(sizeof(*work), GFP_KERNEL);
|
|
try_again:
|
|
spin_lock(&nn->nfsd_ssc_lock);
|
|
list_for_each_entry_safe(ni, tmp, &nn->nfsd_ssc_mount_list, nsui_list) {
|
|
if (strncmp(ni->nsui_ipaddr, ipaddr, sizeof(ni->nsui_ipaddr)))
|
|
continue;
|
|
/* found a match */
|
|
if (ni->nsui_busy) {
|
|
/* wait - and try again */
|
|
prepare_to_wait(&nn->nfsd_ssc_waitq, &wait,
|
|
TASK_INTERRUPTIBLE);
|
|
spin_unlock(&nn->nfsd_ssc_lock);
|
|
|
|
/* allow 20secs for mount/unmount for now - revisit */
|
|
if (signal_pending(current) ||
|
|
(schedule_timeout(20*HZ) == 0)) {
|
|
finish_wait(&nn->nfsd_ssc_waitq, &wait);
|
|
kfree(work);
|
|
return nfserr_eagain;
|
|
}
|
|
finish_wait(&nn->nfsd_ssc_waitq, &wait);
|
|
goto try_again;
|
|
}
|
|
*nsui = ni;
|
|
refcount_inc(&ni->nsui_refcnt);
|
|
spin_unlock(&nn->nfsd_ssc_lock);
|
|
kfree(work);
|
|
|
|
/* return vfsmount in (*nsui)->nsui_vfsmount */
|
|
return 0;
|
|
}
|
|
if (work) {
|
|
strscpy(work->nsui_ipaddr, ipaddr, sizeof(work->nsui_ipaddr) - 1);
|
|
refcount_set(&work->nsui_refcnt, 2);
|
|
work->nsui_busy = true;
|
|
list_add_tail(&work->nsui_list, &nn->nfsd_ssc_mount_list);
|
|
*nsui = work;
|
|
} else
|
|
status = nfserr_resource;
|
|
spin_unlock(&nn->nfsd_ssc_lock);
|
|
return status;
|
|
}
|
|
|
|
static void nfsd4_ssc_update_dul(struct nfsd_net *nn,
|
|
struct nfsd4_ssc_umount_item *nsui,
|
|
struct vfsmount *ss_mnt)
|
|
{
|
|
spin_lock(&nn->nfsd_ssc_lock);
|
|
nsui->nsui_vfsmount = ss_mnt;
|
|
nsui->nsui_busy = false;
|
|
wake_up_all(&nn->nfsd_ssc_waitq);
|
|
spin_unlock(&nn->nfsd_ssc_lock);
|
|
}
|
|
|
|
static void nfsd4_ssc_cancel_dul(struct nfsd_net *nn,
|
|
struct nfsd4_ssc_umount_item *nsui)
|
|
{
|
|
spin_lock(&nn->nfsd_ssc_lock);
|
|
list_del(&nsui->nsui_list);
|
|
wake_up_all(&nn->nfsd_ssc_waitq);
|
|
spin_unlock(&nn->nfsd_ssc_lock);
|
|
kfree(nsui);
|
|
}
|
|
|
|
/*
|
|
* Support one copy source server for now.
|
|
*/
|
|
static __be32
|
|
nfsd4_interssc_connect(struct nl4_server *nss, struct svc_rqst *rqstp,
|
|
struct nfsd4_ssc_umount_item **nsui)
|
|
{
|
|
struct file_system_type *type;
|
|
struct vfsmount *ss_mnt;
|
|
struct nfs42_netaddr *naddr;
|
|
struct sockaddr_storage tmp_addr;
|
|
size_t tmp_addrlen, match_netid_len = 3;
|
|
char *startsep = "", *endsep = "", *match_netid = "tcp";
|
|
char *ipaddr, *dev_name, *raw_data;
|
|
int len, raw_len;
|
|
__be32 status = nfserr_inval;
|
|
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
|
|
|
|
naddr = &nss->u.nl4_addr;
|
|
tmp_addrlen = rpc_uaddr2sockaddr(SVC_NET(rqstp), naddr->addr,
|
|
naddr->addr_len,
|
|
(struct sockaddr *)&tmp_addr,
|
|
sizeof(tmp_addr));
|
|
*nsui = NULL;
|
|
if (tmp_addrlen == 0)
|
|
goto out_err;
|
|
|
|
if (tmp_addr.ss_family == AF_INET6) {
|
|
startsep = "[";
|
|
endsep = "]";
|
|
match_netid = "tcp6";
|
|
match_netid_len = 4;
|
|
}
|
|
|
|
if (naddr->netid_len != match_netid_len ||
|
|
strncmp(naddr->netid, match_netid, naddr->netid_len))
|
|
goto out_err;
|
|
|
|
/* Construct the raw data for the vfs_kern_mount call */
|
|
len = RPC_MAX_ADDRBUFLEN + 1;
|
|
ipaddr = kzalloc(len, GFP_KERNEL);
|
|
if (!ipaddr)
|
|
goto out_err;
|
|
|
|
rpc_ntop((struct sockaddr *)&tmp_addr, ipaddr, len);
|
|
|
|
/* 2 for ipv6 endsep and startsep. 3 for ":/" and trailing '/0'*/
|
|
|
|
raw_len = strlen(NFSD42_INTERSSC_MOUNTOPS) + strlen(ipaddr);
|
|
raw_data = kzalloc(raw_len, GFP_KERNEL);
|
|
if (!raw_data)
|
|
goto out_free_ipaddr;
|
|
|
|
snprintf(raw_data, raw_len, NFSD42_INTERSSC_MOUNTOPS, ipaddr);
|
|
|
|
status = nfserr_nodev;
|
|
type = get_fs_type("nfs");
|
|
if (!type)
|
|
goto out_free_rawdata;
|
|
|
|
/* Set the server:<export> for the vfs_kern_mount call */
|
|
dev_name = kzalloc(len + 5, GFP_KERNEL);
|
|
if (!dev_name)
|
|
goto out_free_rawdata;
|
|
snprintf(dev_name, len + 5, "%s%s%s:/", startsep, ipaddr, endsep);
|
|
|
|
status = nfsd4_ssc_setup_dul(nn, ipaddr, nsui);
|
|
if (status)
|
|
goto out_free_devname;
|
|
if ((*nsui)->nsui_vfsmount)
|
|
goto out_done;
|
|
|
|
/* Use an 'internal' mount: SB_KERNMOUNT -> MNT_INTERNAL */
|
|
ss_mnt = vfs_kern_mount(type, SB_KERNMOUNT, dev_name, raw_data);
|
|
module_put(type->owner);
|
|
if (IS_ERR(ss_mnt)) {
|
|
status = nfserr_nodev;
|
|
nfsd4_ssc_cancel_dul(nn, *nsui);
|
|
goto out_free_devname;
|
|
}
|
|
nfsd4_ssc_update_dul(nn, *nsui, ss_mnt);
|
|
out_done:
|
|
status = 0;
|
|
|
|
out_free_devname:
|
|
kfree(dev_name);
|
|
out_free_rawdata:
|
|
kfree(raw_data);
|
|
out_free_ipaddr:
|
|
kfree(ipaddr);
|
|
out_err:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Verify COPY destination stateid.
|
|
*
|
|
* Connect to the source server with NFSv4.1.
|
|
* Create the source struct file for nfsd_copy_range.
|
|
* Called with COPY cstate:
|
|
* SAVED_FH: source filehandle
|
|
* CURRENT_FH: destination filehandle
|
|
*/
|
|
static __be32
|
|
nfsd4_setup_inter_ssc(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_copy *copy)
|
|
{
|
|
struct svc_fh *s_fh = NULL;
|
|
stateid_t *s_stid = ©->cp_src_stateid;
|
|
__be32 status = nfserr_inval;
|
|
|
|
/* Verify the destination stateid and set dst struct file*/
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
©->cp_dst_stateid,
|
|
WR_STATE, ©->nf_dst, NULL);
|
|
if (status)
|
|
goto out;
|
|
|
|
status = nfsd4_interssc_connect(copy->cp_src, rqstp, ©->ss_nsui);
|
|
if (status)
|
|
goto out;
|
|
|
|
s_fh = &cstate->save_fh;
|
|
|
|
copy->c_fh.size = s_fh->fh_handle.fh_size;
|
|
memcpy(copy->c_fh.data, &s_fh->fh_handle.fh_raw, copy->c_fh.size);
|
|
copy->stateid.seqid = cpu_to_be32(s_stid->si_generation);
|
|
memcpy(copy->stateid.other, (void *)&s_stid->si_opaque,
|
|
sizeof(stateid_opaque_t));
|
|
|
|
status = 0;
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static void
|
|
nfsd4_cleanup_inter_ssc(struct nfsd4_ssc_umount_item *nsui, struct file *filp,
|
|
struct nfsd_file *dst)
|
|
{
|
|
struct nfsd_net *nn = net_generic(dst->nf_net, nfsd_net_id);
|
|
long timeout = msecs_to_jiffies(nfsd4_ssc_umount_timeout);
|
|
|
|
nfs42_ssc_close(filp);
|
|
fput(filp);
|
|
|
|
spin_lock(&nn->nfsd_ssc_lock);
|
|
list_del(&nsui->nsui_list);
|
|
/*
|
|
* vfsmount can be shared by multiple exports,
|
|
* decrement refcnt. If the count drops to 1 it
|
|
* will be unmounted when nsui_expire expires.
|
|
*/
|
|
refcount_dec(&nsui->nsui_refcnt);
|
|
nsui->nsui_expire = jiffies + timeout;
|
|
list_add_tail(&nsui->nsui_list, &nn->nfsd_ssc_mount_list);
|
|
spin_unlock(&nn->nfsd_ssc_lock);
|
|
}
|
|
|
|
#else /* CONFIG_NFSD_V4_2_INTER_SSC */
|
|
|
|
static __be32
|
|
nfsd4_setup_inter_ssc(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_copy *copy)
|
|
{
|
|
return nfserr_inval;
|
|
}
|
|
|
|
static void
|
|
nfsd4_cleanup_inter_ssc(struct nfsd4_ssc_umount_item *nsui, struct file *filp,
|
|
struct nfsd_file *dst)
|
|
{
|
|
}
|
|
|
|
static struct file *nfs42_ssc_open(struct vfsmount *ss_mnt,
|
|
struct nfs_fh *src_fh,
|
|
nfs4_stateid *stateid)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif /* CONFIG_NFSD_V4_2_INTER_SSC */
|
|
|
|
static __be32
|
|
nfsd4_setup_intra_ssc(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_copy *copy)
|
|
{
|
|
return nfsd4_verify_copy(rqstp, cstate, ©->cp_src_stateid,
|
|
©->nf_src, ©->cp_dst_stateid,
|
|
©->nf_dst);
|
|
}
|
|
|
|
static void nfsd4_cb_offload_release(struct nfsd4_callback *cb)
|
|
{
|
|
struct nfsd4_cb_offload *cbo =
|
|
container_of(cb, struct nfsd4_cb_offload, co_cb);
|
|
|
|
kfree(cbo);
|
|
}
|
|
|
|
static int nfsd4_cb_offload_done(struct nfsd4_callback *cb,
|
|
struct rpc_task *task)
|
|
{
|
|
struct nfsd4_cb_offload *cbo =
|
|
container_of(cb, struct nfsd4_cb_offload, co_cb);
|
|
|
|
trace_nfsd_cb_offload_done(&cbo->co_res.cb_stateid, task);
|
|
return 1;
|
|
}
|
|
|
|
static const struct nfsd4_callback_ops nfsd4_cb_offload_ops = {
|
|
.release = nfsd4_cb_offload_release,
|
|
.done = nfsd4_cb_offload_done
|
|
};
|
|
|
|
static void nfsd4_init_copy_res(struct nfsd4_copy *copy, bool sync)
|
|
{
|
|
copy->cp_res.wr_stable_how =
|
|
test_bit(NFSD4_COPY_F_COMMITTED, ©->cp_flags) ?
|
|
NFS_FILE_SYNC : NFS_UNSTABLE;
|
|
nfsd4_copy_set_sync(copy, sync);
|
|
gen_boot_verifier(©->cp_res.wr_verifier, copy->cp_clp->net);
|
|
}
|
|
|
|
static ssize_t _nfsd_copy_file_range(struct nfsd4_copy *copy,
|
|
struct file *dst,
|
|
struct file *src)
|
|
{
|
|
errseq_t since;
|
|
ssize_t bytes_copied = 0;
|
|
u64 bytes_total = copy->cp_count;
|
|
u64 src_pos = copy->cp_src_pos;
|
|
u64 dst_pos = copy->cp_dst_pos;
|
|
int status;
|
|
loff_t end;
|
|
|
|
/* See RFC 7862 p.67: */
|
|
if (bytes_total == 0)
|
|
bytes_total = ULLONG_MAX;
|
|
do {
|
|
if (kthread_should_stop())
|
|
break;
|
|
bytes_copied = nfsd_copy_file_range(src, src_pos, dst, dst_pos,
|
|
bytes_total);
|
|
if (bytes_copied <= 0)
|
|
break;
|
|
bytes_total -= bytes_copied;
|
|
copy->cp_res.wr_bytes_written += bytes_copied;
|
|
src_pos += bytes_copied;
|
|
dst_pos += bytes_copied;
|
|
} while (bytes_total > 0 && nfsd4_copy_is_async(copy));
|
|
/* for a non-zero asynchronous copy do a commit of data */
|
|
if (nfsd4_copy_is_async(copy) && copy->cp_res.wr_bytes_written > 0) {
|
|
since = READ_ONCE(dst->f_wb_err);
|
|
end = copy->cp_dst_pos + copy->cp_res.wr_bytes_written - 1;
|
|
status = vfs_fsync_range(dst, copy->cp_dst_pos, end, 0);
|
|
if (!status)
|
|
status = filemap_check_wb_err(dst->f_mapping, since);
|
|
if (!status)
|
|
set_bit(NFSD4_COPY_F_COMMITTED, ©->cp_flags);
|
|
}
|
|
return bytes_copied;
|
|
}
|
|
|
|
static __be32 nfsd4_do_copy(struct nfsd4_copy *copy,
|
|
struct file *src, struct file *dst,
|
|
bool sync)
|
|
{
|
|
__be32 status;
|
|
ssize_t bytes;
|
|
|
|
bytes = _nfsd_copy_file_range(copy, dst, src);
|
|
|
|
/* for async copy, we ignore the error, client can always retry
|
|
* to get the error
|
|
*/
|
|
if (bytes < 0 && !copy->cp_res.wr_bytes_written)
|
|
status = nfserrno(bytes);
|
|
else {
|
|
nfsd4_init_copy_res(copy, sync);
|
|
status = nfs_ok;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst)
|
|
{
|
|
dst->cp_src_pos = src->cp_src_pos;
|
|
dst->cp_dst_pos = src->cp_dst_pos;
|
|
dst->cp_count = src->cp_count;
|
|
dst->cp_flags = src->cp_flags;
|
|
memcpy(&dst->cp_res, &src->cp_res, sizeof(src->cp_res));
|
|
memcpy(&dst->fh, &src->fh, sizeof(src->fh));
|
|
dst->cp_clp = src->cp_clp;
|
|
dst->nf_dst = nfsd_file_get(src->nf_dst);
|
|
/* for inter, nf_src doesn't exist yet */
|
|
if (!nfsd4_ssc_is_inter(src))
|
|
dst->nf_src = nfsd_file_get(src->nf_src);
|
|
|
|
memcpy(&dst->cp_stateid, &src->cp_stateid, sizeof(src->cp_stateid));
|
|
memcpy(dst->cp_src, src->cp_src, sizeof(struct nl4_server));
|
|
memcpy(&dst->stateid, &src->stateid, sizeof(src->stateid));
|
|
memcpy(&dst->c_fh, &src->c_fh, sizeof(src->c_fh));
|
|
dst->ss_nsui = src->ss_nsui;
|
|
}
|
|
|
|
static void release_copy_files(struct nfsd4_copy *copy)
|
|
{
|
|
if (copy->nf_src)
|
|
nfsd_file_put(copy->nf_src);
|
|
if (copy->nf_dst)
|
|
nfsd_file_put(copy->nf_dst);
|
|
}
|
|
|
|
static void cleanup_async_copy(struct nfsd4_copy *copy)
|
|
{
|
|
nfs4_free_copy_state(copy);
|
|
release_copy_files(copy);
|
|
if (copy->cp_clp) {
|
|
spin_lock(©->cp_clp->async_lock);
|
|
if (!list_empty(©->copies))
|
|
list_del_init(©->copies);
|
|
spin_unlock(©->cp_clp->async_lock);
|
|
}
|
|
nfs4_put_copy(copy);
|
|
}
|
|
|
|
static void nfsd4_send_cb_offload(struct nfsd4_copy *copy, __be32 nfserr)
|
|
{
|
|
struct nfsd4_cb_offload *cbo;
|
|
|
|
cbo = kzalloc(sizeof(*cbo), GFP_KERNEL);
|
|
if (!cbo)
|
|
return;
|
|
|
|
memcpy(&cbo->co_res, ©->cp_res, sizeof(copy->cp_res));
|
|
memcpy(&cbo->co_fh, ©->fh, sizeof(copy->fh));
|
|
cbo->co_nfserr = nfserr;
|
|
|
|
nfsd4_init_cb(&cbo->co_cb, copy->cp_clp, &nfsd4_cb_offload_ops,
|
|
NFSPROC4_CLNT_CB_OFFLOAD);
|
|
trace_nfsd_cb_offload(copy->cp_clp, &cbo->co_res.cb_stateid,
|
|
&cbo->co_fh, copy->cp_count, nfserr);
|
|
nfsd4_run_cb(&cbo->co_cb);
|
|
}
|
|
|
|
/**
|
|
* nfsd4_do_async_copy - kthread function for background server-side COPY
|
|
* @data: arguments for COPY operation
|
|
*
|
|
* Return values:
|
|
* %0: Copy operation is done.
|
|
*/
|
|
static int nfsd4_do_async_copy(void *data)
|
|
{
|
|
struct nfsd4_copy *copy = (struct nfsd4_copy *)data;
|
|
__be32 nfserr;
|
|
|
|
if (nfsd4_ssc_is_inter(copy)) {
|
|
struct file *filp;
|
|
|
|
filp = nfs42_ssc_open(copy->ss_nsui->nsui_vfsmount,
|
|
©->c_fh, ©->stateid);
|
|
if (IS_ERR(filp)) {
|
|
switch (PTR_ERR(filp)) {
|
|
case -EBADF:
|
|
nfserr = nfserr_wrong_type;
|
|
break;
|
|
default:
|
|
nfserr = nfserr_offload_denied;
|
|
}
|
|
/* ss_mnt will be unmounted by the laundromat */
|
|
goto do_callback;
|
|
}
|
|
nfserr = nfsd4_do_copy(copy, filp, copy->nf_dst->nf_file,
|
|
false);
|
|
nfsd4_cleanup_inter_ssc(copy->ss_nsui, filp, copy->nf_dst);
|
|
} else {
|
|
nfserr = nfsd4_do_copy(copy, copy->nf_src->nf_file,
|
|
copy->nf_dst->nf_file, false);
|
|
}
|
|
|
|
do_callback:
|
|
nfsd4_send_cb_offload(copy, nfserr);
|
|
cleanup_async_copy(copy);
|
|
return 0;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_copy *copy = &u->copy;
|
|
__be32 status;
|
|
struct nfsd4_copy *async_copy = NULL;
|
|
|
|
if (nfsd4_ssc_is_inter(copy)) {
|
|
if (!inter_copy_offload_enable || nfsd4_copy_is_sync(copy)) {
|
|
status = nfserr_notsupp;
|
|
goto out;
|
|
}
|
|
status = nfsd4_setup_inter_ssc(rqstp, cstate, copy);
|
|
if (status)
|
|
return nfserr_offload_denied;
|
|
} else {
|
|
status = nfsd4_setup_intra_ssc(rqstp, cstate, copy);
|
|
if (status)
|
|
return status;
|
|
}
|
|
|
|
copy->cp_clp = cstate->clp;
|
|
memcpy(©->fh, &cstate->current_fh.fh_handle,
|
|
sizeof(struct knfsd_fh));
|
|
if (nfsd4_copy_is_async(copy)) {
|
|
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
|
|
|
|
status = nfserrno(-ENOMEM);
|
|
async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL);
|
|
if (!async_copy)
|
|
goto out_err;
|
|
INIT_LIST_HEAD(&async_copy->copies);
|
|
refcount_set(&async_copy->refcount, 1);
|
|
async_copy->cp_src = kmalloc(sizeof(*async_copy->cp_src), GFP_KERNEL);
|
|
if (!async_copy->cp_src)
|
|
goto out_err;
|
|
if (!nfs4_init_copy_state(nn, copy))
|
|
goto out_err;
|
|
memcpy(©->cp_res.cb_stateid, ©->cp_stateid.cs_stid,
|
|
sizeof(copy->cp_res.cb_stateid));
|
|
dup_copy_fields(copy, async_copy);
|
|
async_copy->copy_task = kthread_create(nfsd4_do_async_copy,
|
|
async_copy, "%s", "copy thread");
|
|
if (IS_ERR(async_copy->copy_task))
|
|
goto out_err;
|
|
spin_lock(&async_copy->cp_clp->async_lock);
|
|
list_add(&async_copy->copies,
|
|
&async_copy->cp_clp->async_copies);
|
|
spin_unlock(&async_copy->cp_clp->async_lock);
|
|
wake_up_process(async_copy->copy_task);
|
|
status = nfs_ok;
|
|
} else {
|
|
status = nfsd4_do_copy(copy, copy->nf_src->nf_file,
|
|
copy->nf_dst->nf_file, true);
|
|
}
|
|
out:
|
|
release_copy_files(copy);
|
|
return status;
|
|
out_err:
|
|
if (nfsd4_ssc_is_inter(copy)) {
|
|
/*
|
|
* Source's vfsmount of inter-copy will be unmounted
|
|
* by the laundromat. Use copy instead of async_copy
|
|
* since async_copy->ss_nsui might not be set yet.
|
|
*/
|
|
refcount_dec(©->ss_nsui->nsui_refcnt);
|
|
}
|
|
if (async_copy)
|
|
cleanup_async_copy(async_copy);
|
|
status = nfserrno(-ENOMEM);
|
|
goto out;
|
|
}
|
|
|
|
static struct nfsd4_copy *
|
|
find_async_copy_locked(struct nfs4_client *clp, stateid_t *stateid)
|
|
{
|
|
struct nfsd4_copy *copy;
|
|
|
|
lockdep_assert_held(&clp->async_lock);
|
|
|
|
list_for_each_entry(copy, &clp->async_copies, copies) {
|
|
if (memcmp(©->cp_stateid.cs_stid, stateid, NFS4_STATEID_SIZE))
|
|
continue;
|
|
return copy;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static struct nfsd4_copy *
|
|
find_async_copy(struct nfs4_client *clp, stateid_t *stateid)
|
|
{
|
|
struct nfsd4_copy *copy;
|
|
|
|
spin_lock(&clp->async_lock);
|
|
copy = find_async_copy_locked(clp, stateid);
|
|
if (copy)
|
|
refcount_inc(©->refcount);
|
|
spin_unlock(&clp->async_lock);
|
|
return copy;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_offload_cancel(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_offload_status *os = &u->offload_status;
|
|
struct nfsd4_copy *copy;
|
|
struct nfs4_client *clp = cstate->clp;
|
|
|
|
copy = find_async_copy(clp, &os->stateid);
|
|
if (!copy) {
|
|
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
|
|
|
|
return manage_cpntf_state(nn, &os->stateid, clp, NULL);
|
|
} else
|
|
nfsd4_stop_copy(copy);
|
|
|
|
return nfs_ok;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_copy_notify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_copy_notify *cn = &u->copy_notify;
|
|
__be32 status;
|
|
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
|
|
struct nfs4_stid *stid;
|
|
struct nfs4_cpntf_state *cps;
|
|
struct nfs4_client *clp = cstate->clp;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
&cn->cpn_src_stateid, RD_STATE, NULL,
|
|
&stid);
|
|
if (status)
|
|
return status;
|
|
|
|
cn->cpn_sec = nn->nfsd4_lease;
|
|
cn->cpn_nsec = 0;
|
|
|
|
status = nfserrno(-ENOMEM);
|
|
cps = nfs4_alloc_init_cpntf_state(nn, stid);
|
|
if (!cps)
|
|
goto out;
|
|
memcpy(&cn->cpn_cnr_stateid, &cps->cp_stateid.cs_stid, sizeof(stateid_t));
|
|
memcpy(&cps->cp_p_stateid, &stid->sc_stateid, sizeof(stateid_t));
|
|
memcpy(&cps->cp_p_clid, &clp->cl_clientid, sizeof(clientid_t));
|
|
|
|
/* For now, only return one server address in cpn_src, the
|
|
* address used by the client to connect to this server.
|
|
*/
|
|
cn->cpn_src->nl4_type = NL4_NETADDR;
|
|
status = nfsd4_set_netaddr((struct sockaddr *)&rqstp->rq_daddr,
|
|
&cn->cpn_src->u.nl4_addr);
|
|
WARN_ON_ONCE(status);
|
|
if (status) {
|
|
nfs4_put_cpntf_state(nn, cps);
|
|
goto out;
|
|
}
|
|
out:
|
|
nfs4_put_stid(stid);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_fallocate *fallocate, int flags)
|
|
{
|
|
__be32 status;
|
|
struct nfsd_file *nf;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
&fallocate->falloc_stateid,
|
|
WR_STATE, &nf, NULL);
|
|
if (status != nfs_ok)
|
|
return status;
|
|
|
|
status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, nf->nf_file,
|
|
fallocate->falloc_offset,
|
|
fallocate->falloc_length,
|
|
flags);
|
|
nfsd_file_put(nf);
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_offload_status(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_offload_status *os = &u->offload_status;
|
|
__be32 status = nfs_ok;
|
|
struct nfsd4_copy *copy;
|
|
struct nfs4_client *clp = cstate->clp;
|
|
|
|
spin_lock(&clp->async_lock);
|
|
copy = find_async_copy_locked(clp, &os->stateid);
|
|
if (copy)
|
|
os->count = copy->cp_res.wr_bytes_written;
|
|
else
|
|
status = nfserr_bad_stateid;
|
|
spin_unlock(&clp->async_lock);
|
|
|
|
return status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
return nfsd4_fallocate(rqstp, cstate, &u->allocate, 0);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
return nfsd4_fallocate(rqstp, cstate, &u->deallocate,
|
|
FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_seek *seek = &u->seek;
|
|
int whence;
|
|
__be32 status;
|
|
struct nfsd_file *nf;
|
|
|
|
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
|
|
&seek->seek_stateid,
|
|
RD_STATE, &nf, NULL);
|
|
if (status)
|
|
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(nf->nf_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(nf->nf_file)))
|
|
seek->seek_eof = true;
|
|
|
|
out:
|
|
nfsd_file_put(nf);
|
|
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,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
__be32 status;
|
|
|
|
status = _nfsd4_verify(rqstp, cstate, &u->verify);
|
|
return status == nfserr_not_same ? nfs_ok : status;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
__be32 status;
|
|
|
|
status = _nfsd4_verify(rqstp, cstate, &u->nverify);
|
|
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 (layout_type >= LAYOUT_TYPE_MAX ||
|
|
!(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, union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_getdeviceinfo *gdp = &u->getdeviceinfo;
|
|
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->clp, gdp);
|
|
}
|
|
|
|
gdp->gd_notify_types &= ops->notify_types;
|
|
out:
|
|
exp_put(exp);
|
|
return nfserr;
|
|
}
|
|
|
|
static void
|
|
nfsd4_getdeviceinfo_release(union nfsd4_op_u *u)
|
|
{
|
|
kfree(u->getdeviceinfo.gd_device);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_layoutget(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate, union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_layoutget *lgp = &u->layoutget;
|
|
struct svc_fh *current_fh = &cstate->current_fh;
|
|
const struct nfsd4_layout_ops *ops;
|
|
struct nfs4_layout_stateid *ls;
|
|
__be32 nfserr;
|
|
int accmode = NFSD_MAY_READ_IF_EXEC;
|
|
|
|
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_nfsd_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 void
|
|
nfsd4_layoutget_release(union nfsd4_op_u *u)
|
|
{
|
|
kfree(u->layoutget.lg_content);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_layoutcommit(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate, union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_layoutcommit *lcp = &u->layoutcommit;
|
|
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_nfsd_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, union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_layoutreturn *lrp = &u->layoutreturn;
|
|
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 */
|
|
|
|
static __be32
|
|
nfsd4_getxattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_getxattr *getxattr = &u->getxattr;
|
|
|
|
return nfsd_getxattr(rqstp, &cstate->current_fh,
|
|
getxattr->getxa_name, &getxattr->getxa_buf,
|
|
&getxattr->getxa_len);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_setxattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_setxattr *setxattr = &u->setxattr;
|
|
__be32 ret;
|
|
|
|
if (opens_in_grace(SVC_NET(rqstp)))
|
|
return nfserr_grace;
|
|
|
|
ret = nfsd_setxattr(rqstp, &cstate->current_fh, setxattr->setxa_name,
|
|
setxattr->setxa_buf, setxattr->setxa_len,
|
|
setxattr->setxa_flags);
|
|
|
|
if (!ret)
|
|
set_change_info(&setxattr->setxa_cinfo, &cstate->current_fh);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_listxattrs(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
/*
|
|
* Get the entire list, then copy out only the user attributes
|
|
* in the encode function.
|
|
*/
|
|
return nfsd_listxattr(rqstp, &cstate->current_fh,
|
|
&u->listxattrs.lsxa_buf, &u->listxattrs.lsxa_len);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_removexattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
|
|
union nfsd4_op_u *u)
|
|
{
|
|
struct nfsd4_removexattr *removexattr = &u->removexattr;
|
|
__be32 ret;
|
|
|
|
if (opens_in_grace(SVC_NET(rqstp)))
|
|
return nfserr_grace;
|
|
|
|
ret = nfsd_removexattr(rqstp, &cstate->current_fh,
|
|
removexattr->rmxa_name);
|
|
|
|
if (!ret)
|
|
set_change_info(&removexattr->rmxa_cinfo, &cstate->current_fh);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* NULL call.
|
|
*/
|
|
static __be32
|
|
nfsd4_proc_null(struct svc_rqst *rqstp)
|
|
{
|
|
return rpc_success;
|
|
}
|
|
|
|
static inline void nfsd4_increment_op_stats(u32 opnum)
|
|
{
|
|
if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
|
|
percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_NFS4_OP(opnum)]);
|
|
}
|
|
|
|
static const 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 *first_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 (first_op->status == nfserr_op_illegal)
|
|
return nfs_ok;
|
|
if (!(nfsd4_ops[first_op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
|
|
return nfserr_op_not_in_session;
|
|
if (first_op->opnum == OP_SEQUENCE)
|
|
return nfs_ok;
|
|
/*
|
|
* So first_op is something allowed outside a session, like
|
|
* EXCHANGE_ID; but then it has to be the only op in the
|
|
* compound:
|
|
*/
|
|
if (args->opcnt != 1)
|
|
return nfserr_not_only_op;
|
|
return nfs_ok;
|
|
}
|
|
|
|
const 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];
|
|
const struct nfsd4_operation *thisd = OPDESC(this);
|
|
const struct nfsd4_operation *nextd;
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
#ifdef CONFIG_NFSD_V4_2_INTER_SSC
|
|
static void
|
|
check_if_stalefh_allowed(struct nfsd4_compoundargs *args)
|
|
{
|
|
struct nfsd4_op *op, *current_op = NULL, *saved_op = NULL;
|
|
struct nfsd4_copy *copy;
|
|
struct nfsd4_putfh *putfh;
|
|
int i;
|
|
|
|
/* traverse all operation and if it's a COPY compound, mark the
|
|
* source filehandle to skip verification
|
|
*/
|
|
for (i = 0; i < args->opcnt; i++) {
|
|
op = &args->ops[i];
|
|
if (op->opnum == OP_PUTFH)
|
|
current_op = op;
|
|
else if (op->opnum == OP_SAVEFH)
|
|
saved_op = current_op;
|
|
else if (op->opnum == OP_RESTOREFH)
|
|
current_op = saved_op;
|
|
else if (op->opnum == OP_COPY) {
|
|
copy = (struct nfsd4_copy *)&op->u;
|
|
if (!saved_op) {
|
|
op->status = nfserr_nofilehandle;
|
|
return;
|
|
}
|
|
putfh = (struct nfsd4_putfh *)&saved_op->u;
|
|
if (nfsd4_ssc_is_inter(copy))
|
|
putfh->no_verify = true;
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
static void
|
|
check_if_stalefh_allowed(struct nfsd4_compoundargs *args)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* COMPOUND call.
|
|
*/
|
|
static __be32
|
|
nfsd4_proc_compound(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd4_compoundargs *args = rqstp->rq_argp;
|
|
struct nfsd4_compoundres *resp = rqstp->rq_resp;
|
|
struct nfsd4_op *op;
|
|
struct nfsd4_compound_state *cstate = &resp->cstate;
|
|
struct svc_fh *current_fh = &cstate->current_fh;
|
|
struct svc_fh *save_fh = &cstate->save_fh;
|
|
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
|
|
__be32 status;
|
|
|
|
resp->xdr = &rqstp->rq_res_stream;
|
|
resp->statusp = resp->xdr->p;
|
|
|
|
/* reserve space for: NFS status code */
|
|
xdr_reserve_space(resp->xdr, XDR_UNIT);
|
|
|
|
/* reserve space for: taglen, tag, and opcnt */
|
|
xdr_reserve_space(resp->xdr, XDR_UNIT * 2 + 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(nn, args->minorversion, NFSD_TEST) <= 0)
|
|
goto out;
|
|
|
|
status = nfs41_check_op_ordering(args);
|
|
if (status) {
|
|
op = &args->ops[0];
|
|
op->status = status;
|
|
resp->opcnt = 1;
|
|
goto encode_op;
|
|
}
|
|
check_if_stalefh_allowed(args);
|
|
|
|
rqstp->rq_lease_breaker = (void **)&cstate->clp;
|
|
|
|
trace_nfsd_compound(rqstp, args->tag, args->taglen, args->client_opcnt);
|
|
while (!status && resp->opcnt < args->opcnt) {
|
|
op = &args->ops[resp->opcnt++];
|
|
|
|
if (unlikely(resp->opcnt == NFSD_MAX_OPS_PER_COMPOUND)) {
|
|
/* If there are still more operations to process,
|
|
* stop here and report NFS4ERR_RESOURCE. */
|
|
if (cstate->minorversion == 0 &&
|
|
args->client_opcnt > resp->opcnt) {
|
|
op->status = nfserr_resource;
|
|
goto encode_op;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
if (!current_fh->fh_dentry &&
|
|
!HAS_FH_FLAG(current_fh, NFSD4_FH_FOREIGN)) {
|
|
if (!(op->opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
|
|
op->status = nfserr_nofilehandle;
|
|
goto encode_op;
|
|
}
|
|
} else if (current_fh->fh_export &&
|
|
current_fh->fh_export->ex_fslocs.migrated &&
|
|
!(op->opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
|
|
op->status = nfserr_moved;
|
|
goto encode_op;
|
|
}
|
|
|
|
fh_clear_pre_post_attrs(current_fh);
|
|
|
|
/* If op is non-idempotent */
|
|
if (op->opdesc->op_flags & OP_MODIFIES_SOMETHING) {
|
|
/*
|
|
* Don't execute this op if we couldn't encode a
|
|
* successful reply:
|
|
*/
|
|
u32 plen = op->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 (op->opdesc->op_get_currentstateid)
|
|
op->opdesc->op_get_currentstateid(cstate, &op->u);
|
|
op->status = op->opdesc->op_func(rqstp, cstate, &op->u);
|
|
|
|
/* 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) {
|
|
if (op->opdesc->op_set_currentstateid)
|
|
op->opdesc->op_set_currentstateid(cstate, &op->u);
|
|
|
|
if (op->opdesc->op_flags & OP_CLEAR_STATEID)
|
|
clear_current_stateid(cstate);
|
|
|
|
if (current_fh->fh_export &&
|
|
need_wrongsec_check(rqstp))
|
|
op->status = check_nfsd_access(current_fh->fh_export, rqstp);
|
|
}
|
|
encode_op:
|
|
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;
|
|
}
|
|
|
|
trace_nfsd_compound_status(args->client_opcnt, resp->opcnt,
|
|
status, nfsd4_op_name(op->opnum));
|
|
|
|
nfsd4_cstate_clear_replay(cstate);
|
|
nfsd4_increment_op_stats(op->opnum);
|
|
}
|
|
|
|
fh_put(current_fh);
|
|
fh_put(save_fh);
|
|
BUG_ON(cstate->replay_owner);
|
|
out:
|
|
cstate->status = status;
|
|
/* Reset deferral mechanism for RPC deferrals */
|
|
set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
|
|
return rpc_success;
|
|
}
|
|
|
|
#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)
|
|
|
|
/*
|
|
* The _rsize() helpers are invoked by the NFSv4 COMPOUND decoder, which
|
|
* is called before sunrpc sets rq_res.buflen. Thus we have to compute
|
|
* the maximum payload size here, based on transport limits and the size
|
|
* of the remaining space in the rq_pages array.
|
|
*/
|
|
static u32 nfsd4_max_payload(const struct svc_rqst *rqstp)
|
|
{
|
|
u32 buflen;
|
|
|
|
buflen = (rqstp->rq_page_end - rqstp->rq_next_page) * PAGE_SIZE;
|
|
buflen -= rqstp->rq_auth_slack;
|
|
buflen -= rqstp->rq_res.head[0].iov_len;
|
|
return min_t(u32, buflen, svc_max_payload(rqstp));
|
|
}
|
|
|
|
static u32 nfsd4_only_status_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_status_stateid_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_access_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
/* ac_supported, ac_resp_access */
|
|
return (op_encode_hdr_size + 2)* sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_commit_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_create_rsize(const struct svc_rqst *rqstp,
|
|
const 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 u32 nfsd4_getattr_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
const 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 nfsd4_max_payload(rqstp);
|
|
if (bmap0 & FATTR4_WORD0_FS_LOCATIONS)
|
|
return nfsd4_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 u32 nfsd4_getfh_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 1) * sizeof(__be32) + NFS4_FHSIZE;
|
|
}
|
|
|
|
static u32 nfsd4_link_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_lock_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_open_rsize(const struct svc_rqst *rqstp,
|
|
const 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 u32 nfsd4_read_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
u32 rlen = min(op->u.read.rd_length, nfsd4_max_payload(rqstp));
|
|
|
|
return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_read_plus_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
u32 rlen = min(op->u.read.rd_length, nfsd4_max_payload(rqstp));
|
|
/*
|
|
* If we detect that the file changed during hole encoding, then we
|
|
* recover by encoding the remaining reply as data. This means we need
|
|
* to set aside enough room to encode two data segments.
|
|
*/
|
|
u32 seg_len = 2 * (1 + 2 + 1);
|
|
|
|
return (op_encode_hdr_size + 2 + seg_len + XDR_QUADLEN(rlen)) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_readdir_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
u32 rlen = min(op->u.readdir.rd_maxcount, nfsd4_max_payload(rqstp));
|
|
|
|
return (op_encode_hdr_size + op_encode_verifier_maxsz +
|
|
XDR_QUADLEN(rlen)) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_readlink_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 1) * sizeof(__be32) + PAGE_SIZE;
|
|
}
|
|
|
|
static u32 nfsd4_remove_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_rename_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz
|
|
+ op_encode_change_info_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_sequence_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size
|
|
+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_test_stateid_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 1 + op->u.test_stateid.ts_num_ids)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_setattr_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_secinfo_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + RPC_AUTH_MAXFLAVOR *
|
|
(4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_setclientid_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
|
|
sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_write_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_exchange_id_rsize(const struct svc_rqst *rqstp,
|
|
const 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 u32 nfsd4_bind_conn_to_session_rsize(const struct svc_rqst *rqstp,
|
|
const 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 u32 nfsd4_create_session_rsize(const struct svc_rqst *rqstp,
|
|
const 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 u32 nfsd4_copy_rsize(const struct svc_rqst *rqstp,
|
|
const 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);
|
|
}
|
|
|
|
static u32 nfsd4_offload_status_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size +
|
|
2 /* osr_count */ +
|
|
1 /* osr_complete<1> optional 0 for now */) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_copy_notify_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size +
|
|
3 /* cnr_lease_time */ +
|
|
1 /* We support one cnr_source_server */ +
|
|
1 /* cnr_stateid seq */ +
|
|
op_encode_stateid_maxsz /* cnr_stateid */ +
|
|
1 /* num cnr_source_server*/ +
|
|
1 /* nl4_type */ +
|
|
1 /* nl4 size */ +
|
|
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) /*nl4_loc + nl4_loc_sz */)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
#ifdef CONFIG_NFSD_PNFS
|
|
static u32 nfsd4_getdeviceinfo_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
u32 rlen = min(op->u.getdeviceinfo.gd_maxcount, nfsd4_max_payload(rqstp));
|
|
|
|
return (op_encode_hdr_size +
|
|
1 /* gd_layout_type*/ +
|
|
XDR_QUADLEN(rlen) +
|
|
2 /* gd_notify_types */) * sizeof(__be32);
|
|
}
|
|
|
|
/*
|
|
* 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 u32 nfsd4_layoutget_rsize(const struct svc_rqst *rqstp,
|
|
const 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 u32 nfsd4_layoutcommit_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size +
|
|
1 /* locr_newsize */ +
|
|
2 /* ns_size */) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_layoutreturn_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size +
|
|
1 /* lrs_stateid */ +
|
|
op_encode_stateid_maxsz) * sizeof(__be32);
|
|
}
|
|
#endif /* CONFIG_NFSD_PNFS */
|
|
|
|
|
|
static u32 nfsd4_seek_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + 3) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_getxattr_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
u32 rlen = min_t(u32, XATTR_SIZE_MAX, nfsd4_max_payload(rqstp));
|
|
|
|
return (op_encode_hdr_size + 1 + XDR_QUADLEN(rlen)) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_setxattr_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz)
|
|
* sizeof(__be32);
|
|
}
|
|
static u32 nfsd4_listxattrs_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
u32 rlen = min(op->u.listxattrs.lsxa_maxcount, nfsd4_max_payload(rqstp));
|
|
|
|
return (op_encode_hdr_size + 4 + XDR_QUADLEN(rlen)) * sizeof(__be32);
|
|
}
|
|
|
|
static u32 nfsd4_removexattr_rsize(const struct svc_rqst *rqstp,
|
|
const struct nfsd4_op *op)
|
|
{
|
|
return (op_encode_hdr_size + op_encode_change_info_maxsz)
|
|
* sizeof(__be32);
|
|
}
|
|
|
|
|
|
static const struct nfsd4_operation nfsd4_ops[] = {
|
|
[OP_ACCESS] = {
|
|
.op_func = nfsd4_access,
|
|
.op_name = "OP_ACCESS",
|
|
.op_rsize_bop = nfsd4_access_rsize,
|
|
},
|
|
[OP_CLOSE] = {
|
|
.op_func = nfsd4_close,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_CLOSE",
|
|
.op_rsize_bop = nfsd4_status_stateid_rsize,
|
|
.op_get_currentstateid = nfsd4_get_closestateid,
|
|
.op_set_currentstateid = nfsd4_set_closestateid,
|
|
},
|
|
[OP_COMMIT] = {
|
|
.op_func = nfsd4_commit,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_COMMIT",
|
|
.op_rsize_bop = nfsd4_commit_rsize,
|
|
},
|
|
[OP_CREATE] = {
|
|
.op_func = nfsd4_create,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
|
|
.op_name = "OP_CREATE",
|
|
.op_rsize_bop = nfsd4_create_rsize,
|
|
},
|
|
[OP_DELEGRETURN] = {
|
|
.op_func = nfsd4_delegreturn,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_DELEGRETURN",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
.op_get_currentstateid = nfsd4_get_delegreturnstateid,
|
|
},
|
|
[OP_GETATTR] = {
|
|
.op_func = nfsd4_getattr,
|
|
.op_flags = ALLOWED_ON_ABSENT_FS,
|
|
.op_rsize_bop = nfsd4_getattr_rsize,
|
|
.op_name = "OP_GETATTR",
|
|
},
|
|
[OP_GETFH] = {
|
|
.op_func = nfsd4_getfh,
|
|
.op_name = "OP_GETFH",
|
|
.op_rsize_bop = nfsd4_getfh_rsize,
|
|
},
|
|
[OP_LINK] = {
|
|
.op_func = nfsd4_link,
|
|
.op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
|
|
| OP_CACHEME,
|
|
.op_name = "OP_LINK",
|
|
.op_rsize_bop = nfsd4_link_rsize,
|
|
},
|
|
[OP_LOCK] = {
|
|
.op_func = nfsd4_lock,
|
|
.op_flags = OP_MODIFIES_SOMETHING |
|
|
OP_NONTRIVIAL_ERROR_ENCODE,
|
|
.op_name = "OP_LOCK",
|
|
.op_rsize_bop = nfsd4_lock_rsize,
|
|
.op_set_currentstateid = nfsd4_set_lockstateid,
|
|
},
|
|
[OP_LOCKT] = {
|
|
.op_func = nfsd4_lockt,
|
|
.op_flags = OP_NONTRIVIAL_ERROR_ENCODE,
|
|
.op_name = "OP_LOCKT",
|
|
.op_rsize_bop = nfsd4_lock_rsize,
|
|
},
|
|
[OP_LOCKU] = {
|
|
.op_func = nfsd4_locku,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LOCKU",
|
|
.op_rsize_bop = nfsd4_status_stateid_rsize,
|
|
.op_get_currentstateid = nfsd4_get_lockustateid,
|
|
},
|
|
[OP_LOOKUP] = {
|
|
.op_func = nfsd4_lookup,
|
|
.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
|
|
.op_name = "OP_LOOKUP",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_LOOKUPP] = {
|
|
.op_func = nfsd4_lookupp,
|
|
.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
|
|
.op_name = "OP_LOOKUPP",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_NVERIFY] = {
|
|
.op_func = nfsd4_nverify,
|
|
.op_name = "OP_NVERIFY",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_OPEN] = {
|
|
.op_func = nfsd4_open,
|
|
.op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_OPEN",
|
|
.op_rsize_bop = nfsd4_open_rsize,
|
|
.op_set_currentstateid = nfsd4_set_openstateid,
|
|
},
|
|
[OP_OPEN_CONFIRM] = {
|
|
.op_func = nfsd4_open_confirm,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_OPEN_CONFIRM",
|
|
.op_rsize_bop = nfsd4_status_stateid_rsize,
|
|
},
|
|
[OP_OPEN_DOWNGRADE] = {
|
|
.op_func = nfsd4_open_downgrade,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_OPEN_DOWNGRADE",
|
|
.op_rsize_bop = nfsd4_status_stateid_rsize,
|
|
.op_get_currentstateid = nfsd4_get_opendowngradestateid,
|
|
.op_set_currentstateid = nfsd4_set_opendowngradestateid,
|
|
},
|
|
[OP_PUTFH] = {
|
|
.op_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 = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_PUTPUBFH] = {
|
|
.op_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 = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_PUTROOTFH] = {
|
|
.op_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 = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_READ] = {
|
|
.op_func = nfsd4_read,
|
|
.op_release = nfsd4_read_release,
|
|
.op_name = "OP_READ",
|
|
.op_rsize_bop = nfsd4_read_rsize,
|
|
.op_get_currentstateid = nfsd4_get_readstateid,
|
|
},
|
|
[OP_READDIR] = {
|
|
.op_func = nfsd4_readdir,
|
|
.op_name = "OP_READDIR",
|
|
.op_rsize_bop = nfsd4_readdir_rsize,
|
|
},
|
|
[OP_READLINK] = {
|
|
.op_func = nfsd4_readlink,
|
|
.op_name = "OP_READLINK",
|
|
.op_rsize_bop = nfsd4_readlink_rsize,
|
|
},
|
|
[OP_REMOVE] = {
|
|
.op_func = nfsd4_remove,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_REMOVE",
|
|
.op_rsize_bop = nfsd4_remove_rsize,
|
|
},
|
|
[OP_RENAME] = {
|
|
.op_func = nfsd4_rename,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_RENAME",
|
|
.op_rsize_bop = nfsd4_rename_rsize,
|
|
},
|
|
[OP_RENEW] = {
|
|
.op_func = nfsd4_renew,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_RENEW",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
|
|
},
|
|
[OP_RESTOREFH] = {
|
|
.op_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 = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_SAVEFH] = {
|
|
.op_func = nfsd4_savefh,
|
|
.op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_SAVEFH",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_SECINFO] = {
|
|
.op_func = nfsd4_secinfo,
|
|
.op_release = nfsd4_secinfo_release,
|
|
.op_flags = OP_HANDLES_WRONGSEC,
|
|
.op_name = "OP_SECINFO",
|
|
.op_rsize_bop = nfsd4_secinfo_rsize,
|
|
},
|
|
[OP_SETATTR] = {
|
|
.op_func = nfsd4_setattr,
|
|
.op_name = "OP_SETATTR",
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME
|
|
| OP_NONTRIVIAL_ERROR_ENCODE,
|
|
.op_rsize_bop = nfsd4_setattr_rsize,
|
|
.op_get_currentstateid = nfsd4_get_setattrstateid,
|
|
},
|
|
[OP_SETCLIENTID] = {
|
|
.op_func = nfsd4_setclientid,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_MODIFIES_SOMETHING | OP_CACHEME
|
|
| OP_NONTRIVIAL_ERROR_ENCODE,
|
|
.op_name = "OP_SETCLIENTID",
|
|
.op_rsize_bop = nfsd4_setclientid_rsize,
|
|
},
|
|
[OP_SETCLIENTID_CONFIRM] = {
|
|
.op_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 = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_VERIFY] = {
|
|
.op_func = nfsd4_verify,
|
|
.op_name = "OP_VERIFY",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_WRITE] = {
|
|
.op_func = nfsd4_write,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_WRITE",
|
|
.op_rsize_bop = nfsd4_write_rsize,
|
|
.op_get_currentstateid = nfsd4_get_writestateid,
|
|
},
|
|
[OP_RELEASE_LOCKOWNER] = {
|
|
.op_func = nfsd4_release_lockowner,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_RELEASE_LOCKOWNER",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
|
|
/* NFSv4.1 operations */
|
|
[OP_EXCHANGE_ID] = {
|
|
.op_func = nfsd4_exchange_id,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_EXCHANGE_ID",
|
|
.op_rsize_bop = nfsd4_exchange_id_rsize,
|
|
},
|
|
[OP_BACKCHANNEL_CTL] = {
|
|
.op_func = nfsd4_backchannel_ctl,
|
|
.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_BACKCHANNEL_CTL",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_BIND_CONN_TO_SESSION] = {
|
|
.op_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 = nfsd4_bind_conn_to_session_rsize,
|
|
},
|
|
[OP_CREATE_SESSION] = {
|
|
.op_func = nfsd4_create_session,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_CREATE_SESSION",
|
|
.op_rsize_bop = nfsd4_create_session_rsize,
|
|
},
|
|
[OP_DESTROY_SESSION] = {
|
|
.op_func = nfsd4_destroy_session,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_DESTROY_SESSION",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_SEQUENCE] = {
|
|
.op_func = nfsd4_sequence,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
|
|
.op_name = "OP_SEQUENCE",
|
|
.op_rsize_bop = nfsd4_sequence_rsize,
|
|
},
|
|
[OP_DESTROY_CLIENTID] = {
|
|
.op_func = nfsd4_destroy_clientid,
|
|
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
|
|
| OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_DESTROY_CLIENTID",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_RECLAIM_COMPLETE] = {
|
|
.op_func = nfsd4_reclaim_complete,
|
|
.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_RECLAIM_COMPLETE",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_SECINFO_NO_NAME] = {
|
|
.op_func = nfsd4_secinfo_no_name,
|
|
.op_release = nfsd4_secinfo_no_name_release,
|
|
.op_flags = OP_HANDLES_WRONGSEC,
|
|
.op_name = "OP_SECINFO_NO_NAME",
|
|
.op_rsize_bop = nfsd4_secinfo_rsize,
|
|
},
|
|
[OP_TEST_STATEID] = {
|
|
.op_func = nfsd4_test_stateid,
|
|
.op_flags = ALLOWED_WITHOUT_FH,
|
|
.op_name = "OP_TEST_STATEID",
|
|
.op_rsize_bop = nfsd4_test_stateid_rsize,
|
|
},
|
|
[OP_FREE_STATEID] = {
|
|
.op_func = nfsd4_free_stateid,
|
|
.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_FREE_STATEID",
|
|
.op_get_currentstateid = nfsd4_get_freestateid,
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
#ifdef CONFIG_NFSD_PNFS
|
|
[OP_GETDEVICEINFO] = {
|
|
.op_func = nfsd4_getdeviceinfo,
|
|
.op_release = nfsd4_getdeviceinfo_release,
|
|
.op_flags = ALLOWED_WITHOUT_FH,
|
|
.op_name = "OP_GETDEVICEINFO",
|
|
.op_rsize_bop = nfsd4_getdeviceinfo_rsize,
|
|
},
|
|
[OP_LAYOUTGET] = {
|
|
.op_func = nfsd4_layoutget,
|
|
.op_release = nfsd4_layoutget_release,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LAYOUTGET",
|
|
.op_rsize_bop = nfsd4_layoutget_rsize,
|
|
},
|
|
[OP_LAYOUTCOMMIT] = {
|
|
.op_func = nfsd4_layoutcommit,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LAYOUTCOMMIT",
|
|
.op_rsize_bop = nfsd4_layoutcommit_rsize,
|
|
},
|
|
[OP_LAYOUTRETURN] = {
|
|
.op_func = nfsd4_layoutreturn,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_LAYOUTRETURN",
|
|
.op_rsize_bop = nfsd4_layoutreturn_rsize,
|
|
},
|
|
#endif /* CONFIG_NFSD_PNFS */
|
|
|
|
/* NFSv4.2 operations */
|
|
[OP_ALLOCATE] = {
|
|
.op_func = nfsd4_allocate,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_ALLOCATE",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_DEALLOCATE] = {
|
|
.op_func = nfsd4_deallocate,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_DEALLOCATE",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_CLONE] = {
|
|
.op_func = nfsd4_clone,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_CLONE",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_COPY] = {
|
|
.op_func = nfsd4_copy,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_COPY",
|
|
.op_rsize_bop = nfsd4_copy_rsize,
|
|
},
|
|
[OP_READ_PLUS] = {
|
|
.op_func = nfsd4_read,
|
|
.op_release = nfsd4_read_release,
|
|
.op_name = "OP_READ_PLUS",
|
|
.op_rsize_bop = nfsd4_read_plus_rsize,
|
|
.op_get_currentstateid = nfsd4_get_readstateid,
|
|
},
|
|
[OP_SEEK] = {
|
|
.op_func = nfsd4_seek,
|
|
.op_name = "OP_SEEK",
|
|
.op_rsize_bop = nfsd4_seek_rsize,
|
|
},
|
|
[OP_OFFLOAD_STATUS] = {
|
|
.op_func = nfsd4_offload_status,
|
|
.op_name = "OP_OFFLOAD_STATUS",
|
|
.op_rsize_bop = nfsd4_offload_status_rsize,
|
|
},
|
|
[OP_OFFLOAD_CANCEL] = {
|
|
.op_func = nfsd4_offload_cancel,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_OFFLOAD_CANCEL",
|
|
.op_rsize_bop = nfsd4_only_status_rsize,
|
|
},
|
|
[OP_COPY_NOTIFY] = {
|
|
.op_func = nfsd4_copy_notify,
|
|
.op_flags = OP_MODIFIES_SOMETHING,
|
|
.op_name = "OP_COPY_NOTIFY",
|
|
.op_rsize_bop = nfsd4_copy_notify_rsize,
|
|
},
|
|
[OP_GETXATTR] = {
|
|
.op_func = nfsd4_getxattr,
|
|
.op_name = "OP_GETXATTR",
|
|
.op_rsize_bop = nfsd4_getxattr_rsize,
|
|
},
|
|
[OP_SETXATTR] = {
|
|
.op_func = nfsd4_setxattr,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_SETXATTR",
|
|
.op_rsize_bop = nfsd4_setxattr_rsize,
|
|
},
|
|
[OP_LISTXATTRS] = {
|
|
.op_func = nfsd4_listxattrs,
|
|
.op_name = "OP_LISTXATTRS",
|
|
.op_rsize_bop = nfsd4_listxattrs_rsize,
|
|
},
|
|
[OP_REMOVEXATTR] = {
|
|
.op_func = nfsd4_removexattr,
|
|
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
|
|
.op_name = "OP_REMOVEXATTR",
|
|
.op_rsize_bop = nfsd4_removexattr_rsize,
|
|
},
|
|
};
|
|
|
|
/**
|
|
* 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;
|
|
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)
|
|
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)
|
|
{
|
|
if (op->opnum == OP_ILLEGAL || op->status == nfserr_notsupp)
|
|
return op_encode_hdr_size * sizeof(__be32);
|
|
|
|
BUG_ON(OPDESC(op)->op_rsize_bop == NULL);
|
|
return OPDESC(op)->op_rsize_bop(rqstp, op);
|
|
}
|
|
|
|
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 %u (%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";
|
|
}
|
|
|
|
static const struct svc_procedure nfsd_procedures4[2] = {
|
|
[NFSPROC4_NULL] = {
|
|
.pc_func = nfsd4_proc_null,
|
|
.pc_decode = nfssvc_decode_voidarg,
|
|
.pc_encode = nfssvc_encode_voidres,
|
|
.pc_argsize = sizeof(struct nfsd_voidargs),
|
|
.pc_argzero = sizeof(struct nfsd_voidargs),
|
|
.pc_ressize = sizeof(struct nfsd_voidres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = 1,
|
|
.pc_name = "NULL",
|
|
},
|
|
[NFSPROC4_COMPOUND] = {
|
|
.pc_func = nfsd4_proc_compound,
|
|
.pc_decode = nfs4svc_decode_compoundargs,
|
|
.pc_encode = nfs4svc_encode_compoundres,
|
|
.pc_argsize = sizeof(struct nfsd4_compoundargs),
|
|
.pc_argzero = offsetof(struct nfsd4_compoundargs, iops),
|
|
.pc_ressize = sizeof(struct nfsd4_compoundres),
|
|
.pc_release = nfsd4_release_compoundargs,
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = NFSD_BUFSIZE/4,
|
|
.pc_name = "COMPOUND",
|
|
},
|
|
};
|
|
|
|
static DEFINE_PER_CPU_ALIGNED(unsigned long,
|
|
nfsd_count4[ARRAY_SIZE(nfsd_procedures4)]);
|
|
const struct svc_version nfsd_version4 = {
|
|
.vs_vers = 4,
|
|
.vs_nproc = ARRAY_SIZE(nfsd_procedures4),
|
|
.vs_proc = nfsd_procedures4,
|
|
.vs_count = nfsd_count4,
|
|
.vs_dispatch = nfsd_dispatch,
|
|
.vs_xdrsize = NFS4_SVC_XDRSIZE,
|
|
.vs_rpcb_optnl = true,
|
|
.vs_need_cong_ctrl = true,
|
|
};
|