From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
Just change the nfsd4_encode_getattr api. Not changing any code or
adding any new functionality yet.
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
fs/nfsd/nfs4proc.c | 6 +++---
fs/nfsd/nfs4xdr.c | 47 +++++++++++++++++++++++++++++++++++------------
fs/nfsd/xdr4.h | 7 ++++---
3 files changed, 42 insertions(+), 18 deletions(-)
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 6d94adf..94ef528 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1061,10 +1061,10 @@ _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
return nfserr_jukebox;
p = buf;
- status = nfsd4_encode_fattr(&cstate->current_fh,
+ status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh,
cstate->current_fh.fh_export,
- cstate->current_fh.fh_dentry, &p,
- count, verify->ve_bmval,
+ cstate->current_fh.fh_dentry,
+ verify->ve_bmval,
rqstp, 0);
/*
* If nfsd4_encode_fattr() ran out of space, assume that's because
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 9113725..1879250 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2045,12 +2045,11 @@ static int get_parent_attributes(struct svc_export *exp, struct kstat *stat)
/*
* Note: @fhp can be NULL; in this case, we might have to compose the filehandle
* ourselves.
- *
- * countp is the buffer size in _words_
*/
__be32
-nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
- struct dentry *dentry, __be32 **buffer, int count, u32 *bmval,
+nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp,
+ struct svc_export *exp,
+ struct dentry *dentry, u32 *bmval,
struct svc_rqst *rqstp, int ignore_crossmnt)
{
u32 bmval0 = bmval[0];
@@ -2059,12 +2058,12 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
struct kstat stat;
struct svc_fh *tempfh = NULL;
struct kstatfs statfs;
- int buflen = count << 2;
+ __be32 *p = xdr->p;
+ int buflen = xdr->buf->buflen;
__be32 *attrlenp;
u32 dummy;
u64 dummy64;
u32 rdattr_err = 0;
- __be32 *p = *buffer;
__be32 status;
int err;
int aclsupport = 0;
@@ -2491,7 +2490,7 @@ out_acl:
}
*attrlenp = htonl((char *)p - (char *)attrlenp - 4);
- *buffer = p;
+ xdr->p = p;
status = nfs_ok;
out:
@@ -2513,6 +2512,27 @@ out_resource:
goto out;
}
+__be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
+ struct svc_fh *fhp, struct svc_export *exp,
+ struct dentry *dentry, u32 *bmval,
+ struct svc_rqst *rqstp, int ignore_crossmnt)
+{
+ struct xdr_buf dummy = {
+ .head[0] = {
+ .iov_base = *p,
+ },
+ .buflen = words << 2,
+ };
+ struct xdr_stream xdr;
+ __be32 ret;
+
+ xdr_init_encode(&xdr, &dummy, NULL);
+ ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp,
+ ignore_crossmnt);
+ *p = xdr.p;
+ return ret;
+}
+
static inline int attributes_need_mount(u32 *bmval)
{
if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME))
@@ -2576,7 +2596,8 @@ nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
}
out_encode:
- nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
+ nfserr = nfsd4_encode_fattr_to_buf(p, buflen, NULL, exp, dentry,
+ cd->rd_bmval,
cd->rd_rqstp, ignore_crossmnt);
out_put:
dput(dentry);
@@ -2746,14 +2767,16 @@ static __be32
nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr)
{
struct svc_fh *fhp = getattr->ga_fhp;
- int buflen;
+ struct xdr_stream *xdr = &resp->xdr;
+ struct xdr_buf *buf = resp->xdr.buf;
if (nfserr)
return nfserr;
- buflen = resp->xdr.end - resp->xdr.p - (COMPOUND_ERR_SLACK_SPACE >> 2);
- nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
- &resp->xdr.p, buflen, getattr->ga_bmval,
+ buf->buflen = (void *)resp->xdr.end - (void *)resp->xdr.p
+ - COMPOUND_ERR_SLACK_SPACE;
+ nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry,
+ getattr->ga_bmval,
resp->rqstp, 0);
return nfserr;
}
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 6884d70..f62a055 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -562,9 +562,10 @@ int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
-__be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
- struct dentry *dentry, __be32 **buffer, int countp,
- u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
+__be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
+ struct svc_fh *fhp, struct svc_export *exp,
+ struct dentry *dentry,
+ u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
struct nfsd4_compound_state *,
struct nfsd4_setclientid *setclid);
--
1.9.0
--
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