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kernel_optimize_test/fs/nfsd/nfs3proc.c
David Shaw 31dec2538e Short write in nfsd becomes a full write to the client 
If a filesystem being written to via NFS returns a short write count
(as opposed to an error) to nfsd, nfsd treats that as a success for
the entire write, rather than the short count that actually succeeded.

For example, given a 8192 byte write, if the underlying filesystem
only writes 4096 bytes, nfsd will ack back to the nfs client that all
8192 bytes were written.  The nfs client does have retry logic for
short writes, but this is never called as the client is told the
complete write succeeded.

There are probably other ways it could happen, but in my case it
happened with a fuse (filesystem in userspace) filesystem which can
rather easily have a partial write.

Here is a patch to properly return the short write count to the
client.

Signed-off-by: David Shaw <dshaw@jabberwocky.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-03-18 17:38:40 -04:00

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/*
* linux/fs/nfsd/nfs3proc.c
*
* Process version 3 NFS requests.
*
* Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de>
*/
#include <linux/linkage.h>
#include <linux/time.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/ext2_fs.h>
#include <linux/stat.h>
#include <linux/fcntl.h>
#include <linux/net.h>
#include <linux/in.h>
#include <linux/unistd.h>
#include <linux/slab.h>
#include <linux/major.h>
#include <linux/magic.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#include <linux/nfsd/cache.h>
#include <linux/nfsd/xdr3.h>
#include <linux/nfs3.h>
#define NFSDDBG_FACILITY NFSDDBG_PROC
#define RETURN_STATUS(st) { resp->status = (st); return (st); }
static int nfs3_ftypes[] = {
0, /* NF3NON */
S_IFREG, /* NF3REG */
S_IFDIR, /* NF3DIR */
S_IFBLK, /* NF3BLK */
S_IFCHR, /* NF3CHR */
S_IFLNK, /* NF3LNK */
S_IFSOCK, /* NF3SOCK */
S_IFIFO, /* NF3FIFO */
};
/*
* NULL call.
*/
static __be32
nfsd3_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
{
return nfs_ok;
}
/*
* Get a file's attributes
*/
static __be32
nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp,
struct nfsd3_attrstat *resp)
{
int err;
__be32 nfserr;
dprintk("nfsd: GETATTR(3) %s\n",
SVCFH_fmt(&argp->fh));
fh_copy(&resp->fh, &argp->fh);
nfserr = fh_verify(rqstp, &resp->fh, 0,
NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
if (nfserr)
RETURN_STATUS(nfserr);
err = vfs_getattr(resp->fh.fh_export->ex_path.mnt,
resp->fh.fh_dentry, &resp->stat);
nfserr = nfserrno(err);
RETURN_STATUS(nfserr);
}
/*
* Set a file's attributes
*/
static __be32
nfsd3_proc_setattr(struct svc_rqst *rqstp, struct nfsd3_sattrargs *argp,
struct nfsd3_attrstat *resp)
{
__be32 nfserr;
dprintk("nfsd: SETATTR(3) %s\n",
SVCFH_fmt(&argp->fh));
fh_copy(&resp->fh, &argp->fh);
nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,
argp->check_guard, argp->guardtime);
RETURN_STATUS(nfserr);
}
/*
* Look up a path name component
*/
static __be32
nfsd3_proc_lookup(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
struct nfsd3_diropres *resp)
{
__be32 nfserr;
dprintk("nfsd: LOOKUP(3) %s %.*s\n",
SVCFH_fmt(&argp->fh),
argp->len,
argp->name);
fh_copy(&resp->dirfh, &argp->fh);
fh_init(&resp->fh, NFS3_FHSIZE);
nfserr = nfsd_lookup(rqstp, &resp->dirfh,
argp->name,
argp->len,
&resp->fh);
RETURN_STATUS(nfserr);
}
/*
* Check file access
*/
static __be32
nfsd3_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp,
struct nfsd3_accessres *resp)
{
__be32 nfserr;
dprintk("nfsd: ACCESS(3) %s 0x%x\n",
SVCFH_fmt(&argp->fh),
argp->access);
fh_copy(&resp->fh, &argp->fh);
resp->access = argp->access;
nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
RETURN_STATUS(nfserr);
}
/*
* Read a symlink.
*/
static __be32
nfsd3_proc_readlink(struct svc_rqst *rqstp, struct nfsd3_readlinkargs *argp,
struct nfsd3_readlinkres *resp)
{
__be32 nfserr;
dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh));
/* Read the symlink. */
fh_copy(&resp->fh, &argp->fh);
resp->len = NFS3_MAXPATHLEN;
nfserr = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len);
RETURN_STATUS(nfserr);
}
/*
* Read a portion of a file.
*/
static __be32
nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp,
struct nfsd3_readres *resp)
{
__be32 nfserr;
u32 max_blocksize = svc_max_payload(rqstp);
dprintk("nfsd: READ(3) %s %lu bytes at %lu\n",
SVCFH_fmt(&argp->fh),
(unsigned long) argp->count,
(unsigned long) argp->offset);
/* Obtain buffer pointer for payload.
* 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
* + 1 (xdr opaque byte count) = 26
*/
resp->count = argp->count;
if (max_blocksize < resp->count)
resp->count = max_blocksize;
svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4);
fh_copy(&resp->fh, &argp->fh);
nfserr = nfsd_read(rqstp, &resp->fh, NULL,
argp->offset,
rqstp->rq_vec, argp->vlen,
&resp->count);
if (nfserr == 0) {
struct inode *inode = resp->fh.fh_dentry->d_inode;
resp->eof = (argp->offset + resp->count) >= inode->i_size;
}
RETURN_STATUS(nfserr);
}
/*
* Write data to a file
*/
static __be32
nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp,
struct nfsd3_writeres *resp)
{
__be32 nfserr;
unsigned long cnt = argp->len;
dprintk("nfsd: WRITE(3) %s %d bytes at %ld%s\n",
SVCFH_fmt(&argp->fh),
argp->len,
(unsigned long) argp->offset,
argp->stable? " stable" : "");
fh_copy(&resp->fh, &argp->fh);
resp->committed = argp->stable;
nfserr = nfsd_write(rqstp, &resp->fh, NULL,
argp->offset,
rqstp->rq_vec, argp->vlen,
&cnt,
&resp->committed);
resp->count = cnt;
RETURN_STATUS(nfserr);
}
/*
* With NFSv3, CREATE processing is a lot easier than with NFSv2.
* At least in theory; we'll see how it fares in practice when the
* first reports about SunOS compatibility problems start to pour in...
*/
static __be32
nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
struct nfsd3_diropres *resp)
{
svc_fh *dirfhp, *newfhp = NULL;
struct iattr *attr;
__be32 nfserr;
dprintk("nfsd: CREATE(3) %s %.*s\n",
SVCFH_fmt(&argp->fh),
argp->len,
argp->name);
dirfhp = fh_copy(&resp->dirfh, &argp->fh);
newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
attr = &argp->attrs;
/* Get the directory inode */
nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_CREATE);
if (nfserr)
RETURN_STATUS(nfserr);
/* Unfudge the mode bits */
attr->ia_mode &= ~S_IFMT;
if (!(attr->ia_valid & ATTR_MODE)) {
attr->ia_valid |= ATTR_MODE;
attr->ia_mode = S_IFREG;
} else {
attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG;
}
/* Now create the file and set attributes */
nfserr = nfsd_create_v3(rqstp, dirfhp, argp->name, argp->len,
attr, newfhp,
argp->createmode, argp->verf, NULL, NULL);
RETURN_STATUS(nfserr);
}
/*
* Make directory. This operation is not idempotent.
*/
static __be32
nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
struct nfsd3_diropres *resp)
{
__be32 nfserr;
dprintk("nfsd: MKDIR(3) %s %.*s\n",
SVCFH_fmt(&argp->fh),
argp->len,
argp->name);
argp->attrs.ia_valid &= ~ATTR_SIZE;
fh_copy(&resp->dirfh, &argp->fh);
fh_init(&resp->fh, NFS3_FHSIZE);
nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
&argp->attrs, S_IFDIR, 0, &resp->fh);
RETURN_STATUS(nfserr);
}
static __be32
nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp,
struct nfsd3_diropres *resp)
{
__be32 nfserr;
dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n",
SVCFH_fmt(&argp->ffh),
argp->flen, argp->fname,
argp->tlen, argp->tname);
fh_copy(&resp->dirfh, &argp->ffh);
fh_init(&resp->fh, NFS3_FHSIZE);
nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen,
argp->tname, argp->tlen,
&resp->fh, &argp->attrs);
RETURN_STATUS(nfserr);
}
/*
* Make socket/fifo/device.
*/
static __be32
nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp,
struct nfsd3_diropres *resp)
{
__be32 nfserr;
int type;
dev_t rdev = 0;
dprintk("nfsd: MKNOD(3) %s %.*s\n",
SVCFH_fmt(&argp->fh),
argp->len,
argp->name);
fh_copy(&resp->dirfh, &argp->fh);
fh_init(&resp->fh, NFS3_FHSIZE);
if (argp->ftype == 0 || argp->ftype >= NF3BAD)
RETURN_STATUS(nfserr_inval);
if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
rdev = MKDEV(argp->major, argp->minor);
if (MAJOR(rdev) != argp->major ||
MINOR(rdev) != argp->minor)
RETURN_STATUS(nfserr_inval);
} else
if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO)
RETURN_STATUS(nfserr_inval);
type = nfs3_ftypes[argp->ftype];
nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
&argp->attrs, type, rdev, &resp->fh);
RETURN_STATUS(nfserr);
}
/*
* Remove file/fifo/socket etc.
*/
static __be32
nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
struct nfsd3_attrstat *resp)
{
__be32 nfserr;
dprintk("nfsd: REMOVE(3) %s %.*s\n",
SVCFH_fmt(&argp->fh),
argp->len,
argp->name);
/* Unlink. -S_IFDIR means file must not be a directory */
fh_copy(&resp->fh, &argp->fh);
nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len);
RETURN_STATUS(nfserr);
}
/*
* Remove a directory
*/
static __be32
nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
struct nfsd3_attrstat *resp)
{
__be32 nfserr;
dprintk("nfsd: RMDIR(3) %s %.*s\n",
SVCFH_fmt(&argp->fh),
argp->len,
argp->name);
fh_copy(&resp->fh, &argp->fh);
nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len);
RETURN_STATUS(nfserr);
}
static __be32
nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp,
struct nfsd3_renameres *resp)
{
__be32 nfserr;
dprintk("nfsd: RENAME(3) %s %.*s ->\n",
SVCFH_fmt(&argp->ffh),
argp->flen,
argp->fname);
dprintk("nfsd: -> %s %.*s\n",
SVCFH_fmt(&argp->tfh),
argp->tlen,
argp->tname);
fh_copy(&resp->ffh, &argp->ffh);
fh_copy(&resp->tfh, &argp->tfh);
nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
&resp->tfh, argp->tname, argp->tlen);
RETURN_STATUS(nfserr);
}
static __be32
nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp,
struct nfsd3_linkres *resp)
{
__be32 nfserr;
dprintk("nfsd: LINK(3) %s ->\n",
SVCFH_fmt(&argp->ffh));
dprintk("nfsd: -> %s %.*s\n",
SVCFH_fmt(&argp->tfh),
argp->tlen,
argp->tname);
fh_copy(&resp->fh, &argp->ffh);
fh_copy(&resp->tfh, &argp->tfh);
nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
&resp->fh);
RETURN_STATUS(nfserr);
}
/*
* Read a portion of a directory.
*/
static __be32
nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
struct nfsd3_readdirres *resp)
{
__be32 nfserr;
int count;
dprintk("nfsd: READDIR(3) %s %d bytes at %d\n",
SVCFH_fmt(&argp->fh),
argp->count, (u32) argp->cookie);
/* Make sure we've room for the NULL ptr & eof flag, and shrink to
* client read size */
count = (argp->count >> 2) - 2;
/* Read directory and encode entries on the fly */
fh_copy(&resp->fh, &argp->fh);
resp->buflen = count;
resp->common.err = nfs_ok;
resp->buffer = argp->buffer;
resp->rqstp = rqstp;
nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie,
&resp->common, nfs3svc_encode_entry);
memcpy(resp->verf, argp->verf, 8);
resp->count = resp->buffer - argp->buffer;
if (resp->offset)
xdr_encode_hyper(resp->offset, argp->cookie);
RETURN_STATUS(nfserr);
}
/*
* Read a portion of a directory, including file handles and attrs.
* For now, we choose to ignore the dircount parameter.
*/
static __be32
nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
struct nfsd3_readdirres *resp)
{
__be32 nfserr;
int count = 0;
loff_t offset;
int i;
caddr_t page_addr = NULL;
dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n",
SVCFH_fmt(&argp->fh),
argp->count, (u32) argp->cookie);
/* Convert byte count to number of words (i.e. >> 2),
* and reserve room for the NULL ptr & eof flag (-2 words) */
resp->count = (argp->count >> 2) - 2;
/* Read directory and encode entries on the fly */
fh_copy(&resp->fh, &argp->fh);
resp->common.err = nfs_ok;
resp->buffer = argp->buffer;
resp->buflen = resp->count;
resp->rqstp = rqstp;
offset = argp->cookie;
nfserr = nfsd_readdir(rqstp, &resp->fh,
&offset,
&resp->common,
nfs3svc_encode_entry_plus);
memcpy(resp->verf, argp->verf, 8);
for (i=1; i<rqstp->rq_resused ; i++) {
page_addr = page_address(rqstp->rq_respages[i]);
if (((caddr_t)resp->buffer >= page_addr) &&
((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) {
count += (caddr_t)resp->buffer - page_addr;
break;
}
count += PAGE_SIZE;
}
resp->count = count >> 2;
if (resp->offset) {
if (unlikely(resp->offset1)) {
/* we ended up with offset on a page boundary */
*resp->offset = htonl(offset >> 32);
*resp->offset1 = htonl(offset & 0xffffffff);
resp->offset1 = NULL;
} else {
xdr_encode_hyper(resp->offset, offset);
}
}
RETURN_STATUS(nfserr);
}
/*
* Get file system stats
*/
static __be32
nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
struct nfsd3_fsstatres *resp)
{
__be32 nfserr;
dprintk("nfsd: FSSTAT(3) %s\n",
SVCFH_fmt(&argp->fh));
nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
fh_put(&argp->fh);
RETURN_STATUS(nfserr);
}
/*
* Get file system info
*/
static __be32
nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
struct nfsd3_fsinfores *resp)
{
__be32 nfserr;
u32 max_blocksize = svc_max_payload(rqstp);
dprintk("nfsd: FSINFO(3) %s\n",
SVCFH_fmt(&argp->fh));
resp->f_rtmax = max_blocksize;
resp->f_rtpref = max_blocksize;
resp->f_rtmult = PAGE_SIZE;
resp->f_wtmax = max_blocksize;
resp->f_wtpref = max_blocksize;
resp->f_wtmult = PAGE_SIZE;
resp->f_dtpref = PAGE_SIZE;
resp->f_maxfilesize = ~(u32) 0;
resp->f_properties = NFS3_FSF_DEFAULT;
nfserr = fh_verify(rqstp, &argp->fh, 0,
NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
/* Check special features of the file system. May request
* different read/write sizes for file systems known to have
* problems with large blocks */
if (nfserr == 0) {
struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
/* Note that we don't care for remote fs's here */
if (sb->s_magic == MSDOS_SUPER_MAGIC) {
resp->f_properties = NFS3_FSF_BILLYBOY;
}
resp->f_maxfilesize = sb->s_maxbytes;
}
fh_put(&argp->fh);
RETURN_STATUS(nfserr);
}
/*
* Get pathconf info for the specified file
*/
static __be32
nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
struct nfsd3_pathconfres *resp)
{
__be32 nfserr;
dprintk("nfsd: PATHCONF(3) %s\n",
SVCFH_fmt(&argp->fh));
/* Set default pathconf */
resp->p_link_max = 255; /* at least */
resp->p_name_max = 255; /* at least */
resp->p_no_trunc = 0;
resp->p_chown_restricted = 1;
resp->p_case_insensitive = 0;
resp->p_case_preserving = 1;
nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
if (nfserr == 0) {
struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
/* Note that we don't care for remote fs's here */
switch (sb->s_magic) {
case EXT2_SUPER_MAGIC:
resp->p_link_max = EXT2_LINK_MAX;
resp->p_name_max = EXT2_NAME_LEN;
break;
case MSDOS_SUPER_MAGIC:
resp->p_case_insensitive = 1;
resp->p_case_preserving = 0;
break;
}
}
fh_put(&argp->fh);
RETURN_STATUS(nfserr);
}
/*
* Commit a file (range) to stable storage.
*/
static __be32
nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp,
struct nfsd3_commitres *resp)
{
__be32 nfserr;
dprintk("nfsd: COMMIT(3) %s %u@%Lu\n",
SVCFH_fmt(&argp->fh),
argp->count,
(unsigned long long) argp->offset);
if (argp->offset > NFS_OFFSET_MAX)
RETURN_STATUS(nfserr_inval);
fh_copy(&resp->fh, &argp->fh);
nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count);
RETURN_STATUS(nfserr);
}
/*
* NFSv3 Server procedures.
* Only the results of non-idempotent operations are cached.
*/
#define nfs3svc_decode_voidargs NULL
#define nfs3svc_release_void NULL
#define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle
#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
#define nfsd3_mkdirargs nfsd3_createargs
#define nfsd3_readdirplusargs nfsd3_readdirargs
#define nfsd3_fhandleargs nfsd_fhandle
#define nfsd3_fhandleres nfsd3_attrstat
#define nfsd3_attrstatres nfsd3_attrstat
#define nfsd3_wccstatres nfsd3_attrstat
#define nfsd3_createres nfsd3_diropres
#define nfsd3_voidres nfsd3_voidargs
struct nfsd3_voidargs { int dummy; };
#define PROC(name, argt, rest, relt, cache, respsize) \
{ (svc_procfunc) nfsd3_proc_##name, \
(kxdrproc_t) nfs3svc_decode_##argt##args, \
(kxdrproc_t) nfs3svc_encode_##rest##res, \
(kxdrproc_t) nfs3svc_release_##relt, \
sizeof(struct nfsd3_##argt##args), \
sizeof(struct nfsd3_##rest##res), \
0, \
cache, \
respsize, \
}
#define ST 1 /* status*/
#define FH 17 /* filehandle with length */
#define AT 21 /* attributes */
#define pAT (1+AT) /* post attributes - conditional */
#define WC (7+pAT) /* WCC attributes */
static struct svc_procedure nfsd_procedures3[22] = {
PROC(null, void, void, void, RC_NOCACHE, ST),
PROC(getattr, fhandle, attrstat, fhandle, RC_NOCACHE, ST+AT),
PROC(setattr, sattr, wccstat, fhandle, RC_REPLBUFF, ST+WC),
PROC(lookup, dirop, dirop, fhandle2, RC_NOCACHE, ST+FH+pAT+pAT),
PROC(access, access, access, fhandle, RC_NOCACHE, ST+pAT+1),
PROC(readlink, readlink, readlink, fhandle, RC_NOCACHE, ST+pAT+1+NFS3_MAXPATHLEN/4),
PROC(read, read, read, fhandle, RC_NOCACHE, ST+pAT+4+NFSSVC_MAXBLKSIZE/4),
PROC(write, write, write, fhandle, RC_REPLBUFF, ST+WC+4),
PROC(create, create, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
PROC(mkdir, mkdir, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
PROC(symlink, symlink, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
PROC(mknod, mknod, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
PROC(remove, dirop, wccstat, fhandle, RC_REPLBUFF, ST+WC),
PROC(rmdir, dirop, wccstat, fhandle, RC_REPLBUFF, ST+WC),
PROC(rename, rename, rename, fhandle2, RC_REPLBUFF, ST+WC+WC),
PROC(link, link, link, fhandle2, RC_REPLBUFF, ST+pAT+WC),
PROC(readdir, readdir, readdir, fhandle, RC_NOCACHE, 0),
PROC(readdirplus,readdirplus, readdir, fhandle, RC_NOCACHE, 0),
PROC(fsstat, fhandle, fsstat, void, RC_NOCACHE, ST+pAT+2*6+1),
PROC(fsinfo, fhandle, fsinfo, void, RC_NOCACHE, ST+pAT+12),
PROC(pathconf, fhandle, pathconf, void, RC_NOCACHE, ST+pAT+6),
PROC(commit, commit, commit, fhandle, RC_NOCACHE, ST+WC+2),
};
struct svc_version nfsd_version3 = {
.vs_vers = 3,
.vs_nproc = 22,
.vs_proc = nfsd_procedures3,
.vs_dispatch = nfsd_dispatch,
.vs_xdrsize = NFS3_SVC_XDRSIZE,
};
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