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-rw-r--r--fs/nfsd/nfs2acl.c75
-rw-r--r--fs/nfsd/nfsproc.c185
-rw-r--r--fs/nfsd/nfssvc.c8
-rw-r--r--fs/nfsd/nfsxdr.c18
-rw-r--r--fs/nfsd/xdr.h7
5 files changed, 171 insertions, 122 deletions
diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
index 3c8b9250dc4a..6f46afdb0616 100644
--- a/fs/nfsd/nfs2acl.c
+++ b/fs/nfsd/nfs2acl.c
@@ -14,7 +14,6 @@
#include "vfs.h"
#define NFSDDBG_FACILITY NFSDDBG_PROC
-#define RETURN_STATUS(st) { resp->status = (st); return (st); }
/*
* NULL call.
@@ -35,24 +34,25 @@ static __be32 nfsacld_proc_getacl(struct svc_rqst *rqstp)
struct posix_acl *acl;
struct inode *inode;
svc_fh *fh;
- __be32 nfserr = 0;
dprintk("nfsd: GETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
fh = fh_copy(&resp->fh, &argp->fh);
- nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
- if (nfserr)
- RETURN_STATUS(nfserr);
+ resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
+ if (resp->status != nfs_ok)
+ goto out;
inode = d_inode(fh->fh_dentry);
- if (argp->mask & ~NFS_ACL_MASK)
- RETURN_STATUS(nfserr_inval);
+ if (argp->mask & ~NFS_ACL_MASK) {
+ resp->status = nfserr_inval;
+ goto out;
+ }
resp->mask = argp->mask;
- nfserr = fh_getattr(fh, &resp->stat);
- if (nfserr)
- RETURN_STATUS(nfserr);
+ resp->status = fh_getattr(fh, &resp->stat);
+ if (resp->status != nfs_ok)
+ goto out;
if (resp->mask & (NFS_ACL|NFS_ACLCNT)) {
acl = get_acl(inode, ACL_TYPE_ACCESS);
@@ -61,7 +61,7 @@ static __be32 nfsacld_proc_getacl(struct svc_rqst *rqstp)
acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
}
if (IS_ERR(acl)) {
- nfserr = nfserrno(PTR_ERR(acl));
+ resp->status = nfserrno(PTR_ERR(acl));
goto fail;
}
resp->acl_access = acl;
@@ -71,19 +71,20 @@ static __be32 nfsacld_proc_getacl(struct svc_rqst *rqstp)
of a non-directory! */
acl = get_acl(inode, ACL_TYPE_DEFAULT);
if (IS_ERR(acl)) {
- nfserr = nfserrno(PTR_ERR(acl));
+ resp->status = nfserrno(PTR_ERR(acl));
goto fail;
}
resp->acl_default = acl;
}
/* resp->acl_{access,default} are released in nfssvc_release_getacl. */
- RETURN_STATUS(0);
+out:
+ return resp->status;
fail:
posix_acl_release(resp->acl_access);
posix_acl_release(resp->acl_default);
- RETURN_STATUS(nfserr);
+ goto out;
}
/*
@@ -95,14 +96,13 @@ static __be32 nfsacld_proc_setacl(struct svc_rqst *rqstp)
struct nfsd_attrstat *resp = rqstp->rq_resp;
struct inode *inode;
svc_fh *fh;
- __be32 nfserr = 0;
int error;
dprintk("nfsd: SETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
fh = fh_copy(&resp->fh, &argp->fh);
- nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);
- if (nfserr)
+ resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);
+ if (resp->status != nfs_ok)
goto out;
inode = d_inode(fh->fh_dentry);
@@ -124,19 +124,20 @@ static __be32 nfsacld_proc_setacl(struct svc_rqst *rqstp)
fh_drop_write(fh);
- nfserr = fh_getattr(fh, &resp->stat);
+ resp->status = fh_getattr(fh, &resp->stat);
out:
/* argp->acl_{access,default} may have been allocated in
nfssvc_decode_setaclargs. */
posix_acl_release(argp->acl_access);
posix_acl_release(argp->acl_default);
- return nfserr;
+ return resp->status;
+
out_drop_lock:
fh_unlock(fh);
fh_drop_write(fh);
out_errno:
- nfserr = nfserrno(error);
+ resp->status = nfserrno(error);
goto out;
}
@@ -147,15 +148,16 @@ static __be32 nfsacld_proc_getattr(struct svc_rqst *rqstp)
{
struct nfsd_fhandle *argp = rqstp->rq_argp;
struct nfsd_attrstat *resp = rqstp->rq_resp;
- __be32 nfserr;
+
dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
fh_copy(&resp->fh, &argp->fh);
- nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
- if (nfserr)
- return nfserr;
- nfserr = fh_getattr(&resp->fh, &resp->stat);
- return nfserr;
+ resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
+ if (resp->status != nfs_ok)
+ goto out;
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
/*
@@ -165,7 +167,6 @@ static __be32 nfsacld_proc_access(struct svc_rqst *rqstp)
{
struct nfsd3_accessargs *argp = rqstp->rq_argp;
struct nfsd3_accessres *resp = rqstp->rq_resp;
- __be32 nfserr;
dprintk("nfsd: ACCESS(2acl) %s 0x%x\n",
SVCFH_fmt(&argp->fh),
@@ -173,11 +174,12 @@ static __be32 nfsacld_proc_access(struct svc_rqst *rqstp)
fh_copy(&resp->fh, &argp->fh);
resp->access = argp->access;
- nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
- if (nfserr)
- return nfserr;
- nfserr = fh_getattr(&resp->fh, &resp->stat);
- return nfserr;
+ resp->status = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
+ if (resp->status != nfs_ok)
+ goto out;
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
/*
@@ -273,6 +275,9 @@ static int nfsaclsvc_encode_getaclres(struct svc_rqst *rqstp, __be32 *p)
int n;
int w;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
/*
* Since this is version 2, the check for nfserr in
* nfsd_dispatch actually ensures the following cannot happen.
@@ -312,6 +317,9 @@ static int nfsaclsvc_encode_attrstatres(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_attrstat *resp = rqstp->rq_resp;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
return xdr_ressize_check(rqstp, p);
}
@@ -321,6 +329,9 @@ static int nfsaclsvc_encode_accessres(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd3_accessres *resp = rqstp->rq_resp;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
*p++ = htonl(resp->access);
return xdr_ressize_check(rqstp, p);
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index c349e1dac3ff..526170319ecf 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -13,25 +13,12 @@
#define NFSDDBG_FACILITY NFSDDBG_PROC
-
static __be32
nfsd_proc_null(struct svc_rqst *rqstp)
{
return nfs_ok;
}
-static __be32
-nfsd_return_attrs(__be32 err, struct nfsd_attrstat *resp)
-{
- if (err) return err;
- return fh_getattr(&resp->fh, &resp->stat);
-}
-static __be32
-nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp)
-{
- if (err) return err;
- return fh_getattr(&resp->fh, &resp->stat);
-}
/*
* Get a file's attributes
* N.B. After this call resp->fh needs an fh_put
@@ -41,13 +28,17 @@ nfsd_proc_getattr(struct svc_rqst *rqstp)
{
struct nfsd_fhandle *argp = rqstp->rq_argp;
struct nfsd_attrstat *resp = rqstp->rq_resp;
- __be32 nfserr;
+
dprintk("nfsd: GETATTR %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);
- return nfsd_return_attrs(nfserr, resp);
+ resp->status = fh_verify(rqstp, &resp->fh, 0,
+ NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
+ if (resp->status != nfs_ok)
+ goto out;
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
/*
@@ -61,7 +52,6 @@ nfsd_proc_setattr(struct svc_rqst *rqstp)
struct nfsd_attrstat *resp = rqstp->rq_resp;
struct iattr *iap = &argp->attrs;
struct svc_fh *fhp;
- __be32 nfserr;
dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n",
SVCFH_fmt(&argp->fh),
@@ -93,9 +83,9 @@ nfsd_proc_setattr(struct svc_rqst *rqstp)
*/
time64_t delta = iap->ia_atime.tv_sec - ktime_get_real_seconds();
- nfserr = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
- if (nfserr)
- goto done;
+ resp->status = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
+ if (resp->status != nfs_ok)
+ return resp->status;
if (delta < 0)
delta = -delta;
@@ -110,9 +100,13 @@ nfsd_proc_setattr(struct svc_rqst *rqstp)
}
}
- nfserr = nfsd_setattr(rqstp, fhp, iap, 0, (time64_t)0);
-done:
- return nfsd_return_attrs(nfserr, resp);
+ resp->status = nfsd_setattr(rqstp, fhp, iap, 0, (time64_t)0);
+ if (resp->status != nfs_ok)
+ goto out;
+
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
/* Obsolete, replaced by MNTPROC_MNT. */
@@ -133,17 +127,20 @@ nfsd_proc_lookup(struct svc_rqst *rqstp)
{
struct nfsd_diropargs *argp = rqstp->rq_argp;
struct nfsd_diropres *resp = rqstp->rq_resp;
- __be32 nfserr;
dprintk("nfsd: LOOKUP %s %.*s\n",
SVCFH_fmt(&argp->fh), argp->len, argp->name);
fh_init(&resp->fh, NFS_FHSIZE);
- nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len,
- &resp->fh);
-
+ resp->status = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len,
+ &resp->fh);
fh_put(&argp->fh);
- return nfsd_return_dirop(nfserr, resp);
+ if (resp->status != nfs_ok)
+ goto out;
+
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
/*
@@ -154,16 +151,15 @@ nfsd_proc_readlink(struct svc_rqst *rqstp)
{
struct nfsd_readlinkargs *argp = rqstp->rq_argp;
struct nfsd_readlinkres *resp = rqstp->rq_resp;
- __be32 nfserr;
dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
/* Read the symlink. */
resp->len = NFS_MAXPATHLEN;
- nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len);
+ resp->status = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len);
fh_put(&argp->fh);
- return nfserr;
+ return resp->status;
}
/*
@@ -175,7 +171,6 @@ nfsd_proc_read(struct svc_rqst *rqstp)
{
struct nfsd_readargs *argp = rqstp->rq_argp;
struct nfsd_readres *resp = rqstp->rq_resp;
- __be32 nfserr;
u32 eof;
dprintk("nfsd: READ %s %d bytes at %d\n",
@@ -197,14 +192,17 @@ nfsd_proc_read(struct svc_rqst *rqstp)
svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
resp->count = argp->count;
- nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh),
- argp->offset,
- rqstp->rq_vec, argp->vlen,
- &resp->count,
- &eof);
-
- if (nfserr) return nfserr;
- return fh_getattr(&resp->fh, &resp->stat);
+ resp->status = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh),
+ argp->offset,
+ rqstp->rq_vec, argp->vlen,
+ &resp->count,
+ &eof);
+ if (resp->status != nfs_ok)
+ goto out;
+
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
/* Reserved */
@@ -223,7 +221,6 @@ nfsd_proc_write(struct svc_rqst *rqstp)
{
struct nfsd_writeargs *argp = rqstp->rq_argp;
struct nfsd_attrstat *resp = rqstp->rq_resp;
- __be32 nfserr;
unsigned long cnt = argp->len;
unsigned int nvecs;
@@ -233,12 +230,20 @@ nfsd_proc_write(struct svc_rqst *rqstp)
nvecs = svc_fill_write_vector(rqstp, rqstp->rq_arg.pages,
&argp->first, cnt);
- if (!nvecs)
- return nfserr_io;
- nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh),
- argp->offset, rqstp->rq_vec, nvecs,
- &cnt, NFS_DATA_SYNC, NULL);
- return nfsd_return_attrs(nfserr, resp);
+ if (!nvecs) {
+ resp->status = nfserr_io;
+ goto out;
+ }
+
+ resp->status = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh),
+ argp->offset, rqstp->rq_vec, nvecs,
+ &cnt, NFS_DATA_SYNC, NULL);
+ if (resp->status != nfs_ok)
+ goto out;
+
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
/*
@@ -258,7 +263,6 @@ nfsd_proc_create(struct svc_rqst *rqstp)
struct inode *inode;
struct dentry *dchild;
int type, mode;
- __be32 nfserr;
int hosterr;
dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size);
@@ -266,40 +270,40 @@ nfsd_proc_create(struct svc_rqst *rqstp)
SVCFH_fmt(dirfhp), argp->len, argp->name);
/* First verify the parent file handle */
- nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
- if (nfserr)
+ resp->status = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
+ if (resp->status != nfs_ok)
goto done; /* must fh_put dirfhp even on error */
/* Check for NFSD_MAY_WRITE in nfsd_create if necessary */
- nfserr = nfserr_exist;
+ resp->status = nfserr_exist;
if (isdotent(argp->name, argp->len))
goto done;
hosterr = fh_want_write(dirfhp);
if (hosterr) {
- nfserr = nfserrno(hosterr);
+ resp->status = nfserrno(hosterr);
goto done;
}
fh_lock_nested(dirfhp, I_MUTEX_PARENT);
dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len);
if (IS_ERR(dchild)) {
- nfserr = nfserrno(PTR_ERR(dchild));
+ resp->status = nfserrno(PTR_ERR(dchild));
goto out_unlock;
}
fh_init(newfhp, NFS_FHSIZE);
- nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
- if (!nfserr && d_really_is_negative(dchild))
- nfserr = nfserr_noent;
+ resp->status = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
+ if (!resp->status && d_really_is_negative(dchild))
+ resp->status = nfserr_noent;
dput(dchild);
- if (nfserr) {
- if (nfserr != nfserr_noent)
+ if (resp->status) {
+ if (resp->status != nfserr_noent)
goto out_unlock;
/*
* If the new file handle wasn't verified, we can't tell
* whether the file exists or not. Time to bail ...
*/
- nfserr = nfserr_acces;
+ resp->status = nfserr_acces;
if (!newfhp->fh_dentry) {
printk(KERN_WARNING
"nfsd_proc_create: file handle not verified\n");
@@ -332,11 +336,11 @@ nfsd_proc_create(struct svc_rqst *rqstp)
* echo thing > device-special-file-or-pipe
* by doing a CREATE with type==0
*/
- nfserr = nfsd_permission(rqstp,
+ resp->status = nfsd_permission(rqstp,
newfhp->fh_export,
newfhp->fh_dentry,
NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS);
- if (nfserr && nfserr != nfserr_rofs)
+ if (resp->status && resp->status != nfserr_rofs)
goto out_unlock;
}
} else
@@ -372,16 +376,17 @@ nfsd_proc_create(struct svc_rqst *rqstp)
attr->ia_valid &= ~ATTR_SIZE;
/* Make sure the type and device matches */
- nfserr = nfserr_exist;
+ resp->status = nfserr_exist;
if (inode && type != (inode->i_mode & S_IFMT))
goto out_unlock;
}
- nfserr = 0;
+ resp->status = nfs_ok;
if (!inode) {
/* File doesn't exist. Create it and set attrs */
- nfserr = nfsd_create_locked(rqstp, dirfhp, argp->name,
- argp->len, attr, type, rdev, newfhp);
+ resp->status = nfsd_create_locked(rqstp, dirfhp, argp->name,
+ argp->len, attr, type, rdev,
+ newfhp);
} else if (type == S_IFREG) {
dprintk("nfsd: existing %s, valid=%x, size=%ld\n",
argp->name, attr->ia_valid, (long) attr->ia_size);
@@ -391,7 +396,8 @@ nfsd_proc_create(struct svc_rqst *rqstp)
*/
attr->ia_valid &= ATTR_SIZE;
if (attr->ia_valid)
- nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time64_t)0);
+ resp->status = nfsd_setattr(rqstp, newfhp, attr, 0,
+ (time64_t)0);
}
out_unlock:
@@ -400,7 +406,11 @@ out_unlock:
fh_drop_write(dirfhp);
done:
fh_put(dirfhp);
- return nfsd_return_dirop(nfserr, resp);
+ if (resp->status != nfs_ok)
+ goto out;
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
static __be32
@@ -463,14 +473,18 @@ nfsd_proc_symlink(struct svc_rqst *rqstp)
struct svc_fh newfh;
__be32 nfserr;
- if (argp->tlen > NFS_MAXPATHLEN)
- return nfserr_nametoolong;
+ if (argp->tlen > NFS_MAXPATHLEN) {
+ nfserr = nfserr_nametoolong;
+ goto out;
+ }
argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first,
page_address(rqstp->rq_arg.pages[0]),
argp->tlen);
- if (IS_ERR(argp->tname))
- return nfserrno(PTR_ERR(argp->tname));
+ if (IS_ERR(argp->tname)) {
+ nfserr = nfserrno(PTR_ERR(argp->tname));
+ goto out;
+ }
dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n",
SVCFH_fmt(&argp->ffh), argp->flen, argp->fname,
@@ -483,6 +497,7 @@ nfsd_proc_symlink(struct svc_rqst *rqstp)
kfree(argp->tname);
fh_put(&argp->ffh);
fh_put(&newfh);
+out:
return nfserr;
}
@@ -495,7 +510,6 @@ nfsd_proc_mkdir(struct svc_rqst *rqstp)
{
struct nfsd_createargs *argp = rqstp->rq_argp;
struct nfsd_diropres *resp = rqstp->rq_resp;
- __be32 nfserr;
dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
@@ -506,10 +520,15 @@ nfsd_proc_mkdir(struct svc_rqst *rqstp)
argp->attrs.ia_valid &= ~ATTR_SIZE;
fh_init(&resp->fh, NFS_FHSIZE);
- nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
- &argp->attrs, S_IFDIR, 0, &resp->fh);
+ resp->status = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
+ &argp->attrs, S_IFDIR, 0, &resp->fh);
fh_put(&argp->fh);
- return nfsd_return_dirop(nfserr, resp);
+ if (resp->status != nfs_ok)
+ goto out;
+
+ resp->status = fh_getattr(&resp->fh, &resp->stat);
+out:
+ return resp->status;
}
/*
@@ -537,7 +556,6 @@ nfsd_proc_readdir(struct svc_rqst *rqstp)
struct nfsd_readdirargs *argp = rqstp->rq_argp;
struct nfsd_readdirres *resp = rqstp->rq_resp;
int count;
- __be32 nfserr;
loff_t offset;
dprintk("nfsd: READDIR %s %d bytes at %d\n",
@@ -558,15 +576,15 @@ nfsd_proc_readdir(struct svc_rqst *rqstp)
resp->common.err = nfs_ok;
/* Read directory and encode entries on the fly */
offset = argp->cookie;
- nfserr = nfsd_readdir(rqstp, &argp->fh, &offset,
- &resp->common, nfssvc_encode_entry);
+ resp->status = nfsd_readdir(rqstp, &argp->fh, &offset,
+ &resp->common, nfssvc_encode_entry);
resp->count = resp->buffer - argp->buffer;
if (resp->offset)
*resp->offset = htonl(offset);
fh_put(&argp->fh);
- return nfserr;
+ return resp->status;
}
/*
@@ -577,14 +595,13 @@ nfsd_proc_statfs(struct svc_rqst *rqstp)
{
struct nfsd_fhandle *argp = rqstp->rq_argp;
struct nfsd_statfsres *resp = rqstp->rq_resp;
- __be32 nfserr;
dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh));
- nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
- NFSD_MAY_BYPASS_GSS_ON_ROOT);
+ resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
+ NFSD_MAY_BYPASS_GSS_ON_ROOT);
fh_put(&argp->fh);
- return nfserr;
+ return resp->status;
}
/*
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index e793344227c9..4aa8db879ca2 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -1056,12 +1056,8 @@ int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
if (rqstp->rq_proc != 0)
*nfserrp++ = nfserr;
- /*
- * For NFSv2, additional info is never returned in case of an error.
- */
- if (!(nfserr && rqstp->rq_vers == 2))
- if (!proc->pc_encode(rqstp, nfserrp))
- goto out_encode_err;
+ if (!proc->pc_encode(rqstp, nfserrp))
+ goto out_encode_err;
nfsd_cache_update(rqstp, rqstp->rq_cachetype, statp + 1);
out_cached_reply:
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index 39c004ec7d85..952e71c95d4e 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -434,6 +434,9 @@ nfssvc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_attrstat *resp = rqstp->rq_resp;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
p = encode_fattr(rqstp, p, &resp->fh, &resp->stat);
return xdr_ressize_check(rqstp, p);
}
@@ -443,6 +446,9 @@ nfssvc_encode_diropres(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_diropres *resp = rqstp->rq_resp;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
p = encode_fh(p, &resp->fh);
p = encode_fattr(rqstp, p, &resp->fh, &resp->stat);
return xdr_ressize_check(rqstp, p);
@@ -453,6 +459,9 @@ nfssvc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_readlinkres *resp = rqstp->rq_resp;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
*p++ = htonl(resp->len);
xdr_ressize_check(rqstp, p);
rqstp->rq_res.page_len = resp->len;
@@ -470,6 +479,9 @@ nfssvc_encode_readres(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_readres *resp = rqstp->rq_resp;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
p = encode_fattr(rqstp, p, &resp->fh, &resp->stat);
*p++ = htonl(resp->count);
xdr_ressize_check(rqstp, p);
@@ -490,6 +502,9 @@ nfssvc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p)
{
struct nfsd_readdirres *resp = rqstp->rq_resp;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
xdr_ressize_check(rqstp, p);
p = resp->buffer;
*p++ = 0; /* no more entries */
@@ -505,6 +520,9 @@ nfssvc_encode_statfsres(struct svc_rqst *rqstp, __be32 *p)
struct nfsd_statfsres *resp = rqstp->rq_resp;
struct kstatfs *stat = &resp->stats;
+ if (resp->status != nfs_ok)
+ return xdr_ressize_check(rqstp, p);
+
*p++ = htonl(NFSSVC_MAXBLKSIZE_V2); /* max transfer size */
*p++ = htonl(stat->f_bsize);
*p++ = htonl(stat->f_blocks);
diff --git a/fs/nfsd/xdr.h b/fs/nfsd/xdr.h
index 3d3e16d48268..17221931815f 100644
--- a/fs/nfsd/xdr.h
+++ b/fs/nfsd/xdr.h
@@ -83,26 +83,32 @@ struct nfsd_readdirargs {
};
struct nfsd_attrstat {
+ __be32 status;
struct svc_fh fh;
struct kstat stat;
};
struct nfsd_diropres {
+ __be32 status;
struct svc_fh fh;
struct kstat stat;
};
struct nfsd_readlinkres {
+ __be32 status;
int len;
};
struct nfsd_readres {
+ __be32 status;
struct svc_fh fh;
unsigned long count;
struct kstat stat;
};
struct nfsd_readdirres {
+ __be32 status;
+
int count;
struct readdir_cd common;
@@ -112,6 +118,7 @@ struct nfsd_readdirres {
};
struct nfsd_statfsres {
+ __be32 status;
struct kstatfs stats;
};