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authorJ. Bruce Fields <bfields@redhat.com>2012-12-14 17:57:50 -0500
committerJ. Bruce Fields <bfields@redhat.com>2013-01-23 18:17:35 -0500
commit84822d0b3bc5a74a4290727dd1ab4fc7dcd6a348 (patch)
tree4d63b1766e3eb7944395073506e0454eed2e22dd /fs/nfsd/nfs4xdr.c
parentd1c3ed669a2d452cacfb48c2d171a1f364dae2ed (diff)
nfsd4: simplify nfsd4_encode_fattr interface slightly
It seems slightly simpler to make nfsd4_encode_fattr rather than its callers responsible for advancing the write pointer on success. (Also: the count == 0 check in the verify case looks superfluous. Running out of buffer space is really the only reason fattr encoding should fail with eresource.) Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4xdr.c')
-rw-r--r--fs/nfsd/nfs4xdr.c21
1 files changed, 8 insertions, 13 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 0dc11586682..fcb5bed99c3 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2006,12 +2006,11 @@ 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_; upon successful return this becomes
- * replaced with the number of words written.
+ * 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 *countp, u32 *bmval,
+ struct dentry *dentry, __be32 **buffer, int count, u32 *bmval,
struct svc_rqst *rqstp, int ignore_crossmnt)
{
u32 bmval0 = bmval[0];
@@ -2020,12 +2019,12 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
struct kstat stat;
struct svc_fh tempfh;
struct kstatfs statfs;
- int buflen = *countp << 2;
+ int buflen = count << 2;
__be32 *attrlenp;
u32 dummy;
u64 dummy64;
u32 rdattr_err = 0;
- __be32 *p = buffer;
+ __be32 *p = *buffer;
__be32 status;
int err;
int aclsupport = 0;
@@ -2431,7 +2430,7 @@ out_acl:
}
*attrlenp = htonl((char *)p - (char *)attrlenp - 4);
- *countp = p - buffer;
+ *buffer = p;
status = nfs_ok;
out:
@@ -2443,7 +2442,6 @@ out_nfserr:
status = nfserrno(err);
goto out;
out_resource:
- *countp = 0;
status = nfserr_resource;
goto out;
out_serverfault:
@@ -2462,7 +2460,7 @@ static inline int attributes_need_mount(u32 *bmval)
static __be32
nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
- const char *name, int namlen, __be32 *p, int *buflen)
+ const char *name, int namlen, __be32 **p, int buflen)
{
struct svc_export *exp = cd->rd_fhp->fh_export;
struct dentry *dentry;
@@ -2568,10 +2566,9 @@ nfsd4_encode_dirent(void *ccdv, const char *name, int namlen,
p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */
p = xdr_encode_array(p, name, namlen); /* name length & name */
- nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen);
+ nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, &p, buflen);
switch (nfserr) {
case nfs_ok:
- p += buflen;
break;
case nfserr_resource:
nfserr = nfserr_toosmall;
@@ -2698,10 +2695,8 @@ nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);
nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
- resp->p, &buflen, getattr->ga_bmval,
+ &resp->p, buflen, getattr->ga_bmval,
resp->rqstp, 0);
- if (!nfserr)
- resp->p += buflen;
return nfserr;
}