661 lines
15 KiB
C
661 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* XDR support for nfsd
|
|
*
|
|
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
|
|
*/
|
|
|
|
#include "vfs.h"
|
|
#include "xdr.h"
|
|
#include "auth.h"
|
|
|
|
/*
|
|
* Mapping of S_IF* types to NFS file types
|
|
*/
|
|
static const u32 nfs_ftypes[] = {
|
|
NFNON, NFCHR, NFCHR, NFBAD,
|
|
NFDIR, NFBAD, NFBLK, NFBAD,
|
|
NFREG, NFBAD, NFLNK, NFBAD,
|
|
NFSOCK, NFBAD, NFLNK, NFBAD,
|
|
};
|
|
|
|
|
|
/*
|
|
* Basic NFSv2 data types (RFC 1094 Section 2.3)
|
|
*/
|
|
|
|
/**
|
|
* svcxdr_encode_stat - Encode an NFSv2 status code
|
|
* @xdr: XDR stream
|
|
* @status: status value to encode
|
|
*
|
|
* Return values:
|
|
* %false: Send buffer space was exhausted
|
|
* %true: Success
|
|
*/
|
|
bool
|
|
svcxdr_encode_stat(struct xdr_stream *xdr, __be32 status)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = xdr_reserve_space(xdr, sizeof(status));
|
|
if (!p)
|
|
return false;
|
|
*p = status;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* svcxdr_decode_fhandle - Decode an NFSv2 file handle
|
|
* @xdr: XDR stream positioned at an encoded NFSv2 FH
|
|
* @fhp: OUT: filled-in server file handle
|
|
*
|
|
* Return values:
|
|
* %false: The encoded file handle was not valid
|
|
* %true: @fhp has been initialized
|
|
*/
|
|
bool
|
|
svcxdr_decode_fhandle(struct xdr_stream *xdr, struct svc_fh *fhp)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = xdr_inline_decode(xdr, NFS_FHSIZE);
|
|
if (!p)
|
|
return false;
|
|
fh_init(fhp, NFS_FHSIZE);
|
|
memcpy(&fhp->fh_handle.fh_raw, p, NFS_FHSIZE);
|
|
fhp->fh_handle.fh_size = NFS_FHSIZE;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
svcxdr_encode_fhandle(struct xdr_stream *xdr, const struct svc_fh *fhp)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = xdr_reserve_space(xdr, NFS_FHSIZE);
|
|
if (!p)
|
|
return false;
|
|
memcpy(p, &fhp->fh_handle.fh_raw, NFS_FHSIZE);
|
|
|
|
return true;
|
|
}
|
|
|
|
static __be32 *
|
|
encode_timeval(__be32 *p, const struct timespec64 *time)
|
|
{
|
|
*p++ = cpu_to_be32((u32)time->tv_sec);
|
|
if (time->tv_nsec)
|
|
*p++ = cpu_to_be32(time->tv_nsec / NSEC_PER_USEC);
|
|
else
|
|
*p++ = xdr_zero;
|
|
return p;
|
|
}
|
|
|
|
static bool
|
|
svcxdr_decode_filename(struct xdr_stream *xdr, char **name, unsigned int *len)
|
|
{
|
|
u32 size, i;
|
|
__be32 *p;
|
|
char *c;
|
|
|
|
if (xdr_stream_decode_u32(xdr, &size) < 0)
|
|
return false;
|
|
if (size == 0 || size > NFS_MAXNAMLEN)
|
|
return false;
|
|
p = xdr_inline_decode(xdr, size);
|
|
if (!p)
|
|
return false;
|
|
|
|
*len = size;
|
|
*name = (char *)p;
|
|
for (i = 0, c = *name; i < size; i++, c++)
|
|
if (*c == '\0' || *c == '/')
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
svcxdr_decode_diropargs(struct xdr_stream *xdr, struct svc_fh *fhp,
|
|
char **name, unsigned int *len)
|
|
{
|
|
return svcxdr_decode_fhandle(xdr, fhp) &&
|
|
svcxdr_decode_filename(xdr, name, len);
|
|
}
|
|
|
|
static bool
|
|
svcxdr_decode_sattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
|
|
struct iattr *iap)
|
|
{
|
|
u32 tmp1, tmp2;
|
|
__be32 *p;
|
|
|
|
p = xdr_inline_decode(xdr, XDR_UNIT * 8);
|
|
if (!p)
|
|
return false;
|
|
|
|
iap->ia_valid = 0;
|
|
|
|
/*
|
|
* Some Sun clients put 0xffff in the mode field when they
|
|
* mean 0xffffffff.
|
|
*/
|
|
tmp1 = be32_to_cpup(p++);
|
|
if (tmp1 != (u32)-1 && tmp1 != 0xffff) {
|
|
iap->ia_valid |= ATTR_MODE;
|
|
iap->ia_mode = tmp1;
|
|
}
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
if (tmp1 != (u32)-1) {
|
|
iap->ia_uid = make_kuid(nfsd_user_namespace(rqstp), tmp1);
|
|
if (uid_valid(iap->ia_uid))
|
|
iap->ia_valid |= ATTR_UID;
|
|
}
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
if (tmp1 != (u32)-1) {
|
|
iap->ia_gid = make_kgid(nfsd_user_namespace(rqstp), tmp1);
|
|
if (gid_valid(iap->ia_gid))
|
|
iap->ia_valid |= ATTR_GID;
|
|
}
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
if (tmp1 != (u32)-1) {
|
|
iap->ia_valid |= ATTR_SIZE;
|
|
iap->ia_size = tmp1;
|
|
}
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
tmp2 = be32_to_cpup(p++);
|
|
if (tmp1 != (u32)-1 && tmp2 != (u32)-1) {
|
|
iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET;
|
|
iap->ia_atime.tv_sec = tmp1;
|
|
iap->ia_atime.tv_nsec = tmp2 * NSEC_PER_USEC;
|
|
}
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
tmp2 = be32_to_cpup(p++);
|
|
if (tmp1 != (u32)-1 && tmp2 != (u32)-1) {
|
|
iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET;
|
|
iap->ia_mtime.tv_sec = tmp1;
|
|
iap->ia_mtime.tv_nsec = tmp2 * NSEC_PER_USEC;
|
|
/*
|
|
* Passing the invalid value useconds=1000000 for mtime
|
|
* is a Sun convention for "set both mtime and atime to
|
|
* current server time". It's needed to make permissions
|
|
* checks for the "touch" program across v2 mounts to
|
|
* Solaris and Irix boxes work correctly. See description of
|
|
* sattr in section 6.1 of "NFS Illustrated" by
|
|
* Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
|
|
*/
|
|
if (tmp2 == 1000000)
|
|
iap->ia_valid &= ~(ATTR_ATIME_SET|ATTR_MTIME_SET);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* svcxdr_encode_fattr - Encode NFSv2 file attributes
|
|
* @rqstp: Context of a completed RPC transaction
|
|
* @xdr: XDR stream
|
|
* @fhp: File handle to encode
|
|
* @stat: Attributes to encode
|
|
*
|
|
* Return values:
|
|
* %false: Send buffer space was exhausted
|
|
* %true: Success
|
|
*/
|
|
bool
|
|
svcxdr_encode_fattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
|
|
const struct svc_fh *fhp, const struct kstat *stat)
|
|
{
|
|
struct user_namespace *userns = nfsd_user_namespace(rqstp);
|
|
struct dentry *dentry = fhp->fh_dentry;
|
|
int type = stat->mode & S_IFMT;
|
|
struct timespec64 time;
|
|
__be32 *p;
|
|
u32 fsid;
|
|
|
|
p = xdr_reserve_space(xdr, XDR_UNIT * 17);
|
|
if (!p)
|
|
return false;
|
|
|
|
*p++ = cpu_to_be32(nfs_ftypes[type >> 12]);
|
|
*p++ = cpu_to_be32((u32)stat->mode);
|
|
*p++ = cpu_to_be32((u32)stat->nlink);
|
|
*p++ = cpu_to_be32((u32)from_kuid_munged(userns, stat->uid));
|
|
*p++ = cpu_to_be32((u32)from_kgid_munged(userns, stat->gid));
|
|
|
|
if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN)
|
|
*p++ = cpu_to_be32(NFS_MAXPATHLEN);
|
|
else
|
|
*p++ = cpu_to_be32((u32) stat->size);
|
|
*p++ = cpu_to_be32((u32) stat->blksize);
|
|
if (S_ISCHR(type) || S_ISBLK(type))
|
|
*p++ = cpu_to_be32(new_encode_dev(stat->rdev));
|
|
else
|
|
*p++ = cpu_to_be32(0xffffffff);
|
|
*p++ = cpu_to_be32((u32)stat->blocks);
|
|
|
|
switch (fsid_source(fhp)) {
|
|
case FSIDSOURCE_FSID:
|
|
fsid = (u32)fhp->fh_export->ex_fsid;
|
|
break;
|
|
case FSIDSOURCE_UUID:
|
|
fsid = ((u32 *)fhp->fh_export->ex_uuid)[0];
|
|
fsid ^= ((u32 *)fhp->fh_export->ex_uuid)[1];
|
|
fsid ^= ((u32 *)fhp->fh_export->ex_uuid)[2];
|
|
fsid ^= ((u32 *)fhp->fh_export->ex_uuid)[3];
|
|
break;
|
|
default:
|
|
fsid = new_encode_dev(stat->dev);
|
|
break;
|
|
}
|
|
*p++ = cpu_to_be32(fsid);
|
|
|
|
*p++ = cpu_to_be32((u32)stat->ino);
|
|
p = encode_timeval(p, &stat->atime);
|
|
time = stat->mtime;
|
|
lease_get_mtime(d_inode(dentry), &time);
|
|
p = encode_timeval(p, &time);
|
|
encode_timeval(p, &stat->ctime);
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* XDR decode functions
|
|
*/
|
|
|
|
bool
|
|
nfssvc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_fhandle *args = rqstp->rq_argp;
|
|
|
|
return svcxdr_decode_fhandle(xdr, &args->fh);
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_sattrargs *args = rqstp->rq_argp;
|
|
|
|
return svcxdr_decode_fhandle(xdr, &args->fh) &&
|
|
svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_diropargs *args = rqstp->rq_argp;
|
|
|
|
return svcxdr_decode_diropargs(xdr, &args->fh, &args->name, &args->len);
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_readargs *args = rqstp->rq_argp;
|
|
u32 totalcount;
|
|
|
|
if (!svcxdr_decode_fhandle(xdr, &args->fh))
|
|
return false;
|
|
if (xdr_stream_decode_u32(xdr, &args->offset) < 0)
|
|
return false;
|
|
if (xdr_stream_decode_u32(xdr, &args->count) < 0)
|
|
return false;
|
|
/* totalcount is ignored */
|
|
if (xdr_stream_decode_u32(xdr, &totalcount) < 0)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_writeargs *args = rqstp->rq_argp;
|
|
u32 beginoffset, totalcount;
|
|
|
|
if (!svcxdr_decode_fhandle(xdr, &args->fh))
|
|
return false;
|
|
/* beginoffset is ignored */
|
|
if (xdr_stream_decode_u32(xdr, &beginoffset) < 0)
|
|
return false;
|
|
if (xdr_stream_decode_u32(xdr, &args->offset) < 0)
|
|
return false;
|
|
/* totalcount is ignored */
|
|
if (xdr_stream_decode_u32(xdr, &totalcount) < 0)
|
|
return false;
|
|
|
|
/* opaque data */
|
|
if (xdr_stream_decode_u32(xdr, &args->len) < 0)
|
|
return false;
|
|
if (args->len > NFSSVC_MAXBLKSIZE_V2)
|
|
return false;
|
|
|
|
return xdr_stream_subsegment(xdr, &args->payload, args->len);
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_createargs *args = rqstp->rq_argp;
|
|
|
|
return svcxdr_decode_diropargs(xdr, &args->fh,
|
|
&args->name, &args->len) &&
|
|
svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_renameargs *args = rqstp->rq_argp;
|
|
|
|
return svcxdr_decode_diropargs(xdr, &args->ffh,
|
|
&args->fname, &args->flen) &&
|
|
svcxdr_decode_diropargs(xdr, &args->tfh,
|
|
&args->tname, &args->tlen);
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_linkargs *args = rqstp->rq_argp;
|
|
|
|
return svcxdr_decode_fhandle(xdr, &args->ffh) &&
|
|
svcxdr_decode_diropargs(xdr, &args->tfh,
|
|
&args->tname, &args->tlen);
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_symlinkargs *args = rqstp->rq_argp;
|
|
struct kvec *head = rqstp->rq_arg.head;
|
|
|
|
if (!svcxdr_decode_diropargs(xdr, &args->ffh, &args->fname, &args->flen))
|
|
return false;
|
|
if (xdr_stream_decode_u32(xdr, &args->tlen) < 0)
|
|
return false;
|
|
if (args->tlen == 0)
|
|
return false;
|
|
|
|
args->first.iov_len = head->iov_len - xdr_stream_pos(xdr);
|
|
args->first.iov_base = xdr_inline_decode(xdr, args->tlen);
|
|
if (!args->first.iov_base)
|
|
return false;
|
|
return svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
|
|
}
|
|
|
|
bool
|
|
nfssvc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_readdirargs *args = rqstp->rq_argp;
|
|
|
|
if (!svcxdr_decode_fhandle(xdr, &args->fh))
|
|
return false;
|
|
if (xdr_stream_decode_u32(xdr, &args->cookie) < 0)
|
|
return false;
|
|
if (xdr_stream_decode_u32(xdr, &args->count) < 0)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* XDR encode functions
|
|
*/
|
|
|
|
bool
|
|
nfssvc_encode_statres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_stat *resp = rqstp->rq_resp;
|
|
|
|
return svcxdr_encode_stat(xdr, resp->status);
|
|
}
|
|
|
|
bool
|
|
nfssvc_encode_attrstatres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_attrstat *resp = rqstp->rq_resp;
|
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
|
return false;
|
|
switch (resp->status) {
|
|
case nfs_ok:
|
|
if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nfssvc_encode_diropres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_diropres *resp = rqstp->rq_resp;
|
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
|
return false;
|
|
switch (resp->status) {
|
|
case nfs_ok:
|
|
if (!svcxdr_encode_fhandle(xdr, &resp->fh))
|
|
return false;
|
|
if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nfssvc_encode_readlinkres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_readlinkres *resp = rqstp->rq_resp;
|
|
struct kvec *head = rqstp->rq_res.head;
|
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
|
return false;
|
|
switch (resp->status) {
|
|
case nfs_ok:
|
|
if (xdr_stream_encode_u32(xdr, resp->len) < 0)
|
|
return false;
|
|
xdr_write_pages(xdr, &resp->page, 0, resp->len);
|
|
if (svc_encode_result_payload(rqstp, head->iov_len, resp->len) < 0)
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nfssvc_encode_readres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_readres *resp = rqstp->rq_resp;
|
|
struct kvec *head = rqstp->rq_res.head;
|
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
|
return false;
|
|
switch (resp->status) {
|
|
case nfs_ok:
|
|
if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
|
|
return false;
|
|
if (xdr_stream_encode_u32(xdr, resp->count) < 0)
|
|
return false;
|
|
xdr_write_pages(xdr, resp->pages, rqstp->rq_res.page_base,
|
|
resp->count);
|
|
if (svc_encode_result_payload(rqstp, head->iov_len, resp->count) < 0)
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nfssvc_encode_readdirres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_readdirres *resp = rqstp->rq_resp;
|
|
struct xdr_buf *dirlist = &resp->dirlist;
|
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
|
return false;
|
|
switch (resp->status) {
|
|
case nfs_ok:
|
|
xdr_write_pages(xdr, dirlist->pages, 0, dirlist->len);
|
|
/* no more entries */
|
|
if (xdr_stream_encode_item_absent(xdr) < 0)
|
|
return false;
|
|
if (xdr_stream_encode_bool(xdr, resp->common.err == nfserr_eof) < 0)
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nfssvc_encode_statfsres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
|
{
|
|
struct nfsd_statfsres *resp = rqstp->rq_resp;
|
|
struct kstatfs *stat = &resp->stats;
|
|
__be32 *p;
|
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
|
return false;
|
|
switch (resp->status) {
|
|
case nfs_ok:
|
|
p = xdr_reserve_space(xdr, XDR_UNIT * 5);
|
|
if (!p)
|
|
return false;
|
|
*p++ = cpu_to_be32(NFSSVC_MAXBLKSIZE_V2);
|
|
*p++ = cpu_to_be32(stat->f_bsize);
|
|
*p++ = cpu_to_be32(stat->f_blocks);
|
|
*p++ = cpu_to_be32(stat->f_bfree);
|
|
*p = cpu_to_be32(stat->f_bavail);
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* nfssvc_encode_nfscookie - Encode a directory offset cookie
|
|
* @resp: readdir result context
|
|
* @offset: offset cookie to encode
|
|
*
|
|
* The buffer space for the offset cookie has already been reserved
|
|
* by svcxdr_encode_entry_common().
|
|
*/
|
|
void nfssvc_encode_nfscookie(struct nfsd_readdirres *resp, u32 offset)
|
|
{
|
|
__be32 cookie = cpu_to_be32(offset);
|
|
|
|
if (!resp->cookie_offset)
|
|
return;
|
|
|
|
write_bytes_to_xdr_buf(&resp->dirlist, resp->cookie_offset, &cookie,
|
|
sizeof(cookie));
|
|
resp->cookie_offset = 0;
|
|
}
|
|
|
|
static bool
|
|
svcxdr_encode_entry_common(struct nfsd_readdirres *resp, const char *name,
|
|
int namlen, loff_t offset, u64 ino)
|
|
{
|
|
struct xdr_buf *dirlist = &resp->dirlist;
|
|
struct xdr_stream *xdr = &resp->xdr;
|
|
|
|
if (xdr_stream_encode_item_present(xdr) < 0)
|
|
return false;
|
|
/* fileid */
|
|
if (xdr_stream_encode_u32(xdr, (u32)ino) < 0)
|
|
return false;
|
|
/* name */
|
|
if (xdr_stream_encode_opaque(xdr, name, min(namlen, NFS2_MAXNAMLEN)) < 0)
|
|
return false;
|
|
/* cookie */
|
|
resp->cookie_offset = dirlist->len;
|
|
if (xdr_stream_encode_u32(xdr, ~0U) < 0)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* nfssvc_encode_entry - encode one NFSv2 READDIR entry
|
|
* @data: directory context
|
|
* @name: name of the object to be encoded
|
|
* @namlen: length of that name, in bytes
|
|
* @offset: the offset of the previous entry
|
|
* @ino: the fileid of this entry
|
|
* @d_type: unused
|
|
*
|
|
* Return values:
|
|
* %0: Entry was successfully encoded.
|
|
* %-EINVAL: An encoding problem occured, secondary status code in resp->common.err
|
|
*
|
|
* On exit, the following fields are updated:
|
|
* - resp->xdr
|
|
* - resp->common.err
|
|
* - resp->cookie_offset
|
|
*/
|
|
int nfssvc_encode_entry(void *data, const char *name, int namlen,
|
|
loff_t offset, u64 ino, unsigned int d_type)
|
|
{
|
|
struct readdir_cd *ccd = data;
|
|
struct nfsd_readdirres *resp = container_of(ccd,
|
|
struct nfsd_readdirres,
|
|
common);
|
|
unsigned int starting_length = resp->dirlist.len;
|
|
|
|
/* The offset cookie for the previous entry */
|
|
nfssvc_encode_nfscookie(resp, offset);
|
|
|
|
if (!svcxdr_encode_entry_common(resp, name, namlen, offset, ino))
|
|
goto out_toosmall;
|
|
|
|
xdr_commit_encode(&resp->xdr);
|
|
resp->common.err = nfs_ok;
|
|
return 0;
|
|
|
|
out_toosmall:
|
|
resp->cookie_offset = 0;
|
|
resp->common.err = nfserr_toosmall;
|
|
resp->dirlist.len = starting_length;
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* XDR release functions
|
|
*/
|
|
void nfssvc_release_attrstat(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd_attrstat *resp = rqstp->rq_resp;
|
|
|
|
fh_put(&resp->fh);
|
|
}
|
|
|
|
void nfssvc_release_diropres(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd_diropres *resp = rqstp->rq_resp;
|
|
|
|
fh_put(&resp->fh);
|
|
}
|
|
|
|
void nfssvc_release_readres(struct svc_rqst *rqstp)
|
|
{
|
|
struct nfsd_readres *resp = rqstp->rq_resp;
|
|
|
|
fh_put(&resp->fh);
|
|
}
|