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Diffstat (limited to 'fs/nfsd/vfs.c')
-rw-r--r--fs/nfsd/vfs.c33
1 files changed, 20 insertions, 13 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 129f3c9f62d5..d5718273bb32 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -181,16 +181,10 @@ nfsd_lookup_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp,
struct svc_export *exp;
struct dentry *dparent;
struct dentry *dentry;
- __be32 err;
int host_err;
dprintk("nfsd: nfsd_lookup(fh %s, %.*s)\n", SVCFH_fmt(fhp), len,name);
- /* Obtain dentry and export. */
- err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_EXEC);
- if (err)
- return err;
-
dparent = fhp->fh_dentry;
exp = fhp->fh_export;
exp_get(exp);
@@ -254,6 +248,9 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
struct dentry *dentry;
__be32 err;
+ err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_EXEC);
+ if (err)
+ return err;
err = nfsd_lookup_dentry(rqstp, fhp, name, len, &exp, &dentry);
if (err)
return err;
@@ -877,13 +874,11 @@ static __be32
nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
loff_t offset, struct kvec *vec, int vlen, unsigned long *count)
{
- struct inode *inode;
mm_segment_t oldfs;
__be32 err;
int host_err;
err = nfserr_perm;
- inode = file->f_path.dentry->d_inode;
if (file->f_op->splice_read && rqstp->rq_splice_ok) {
struct splice_desc sd = {
@@ -1340,11 +1335,18 @@ out_nfserr:
}
#ifdef CONFIG_NFSD_V3
+
+static inline int nfsd_create_is_exclusive(int createmode)
+{
+ return createmode == NFS3_CREATE_EXCLUSIVE
+ || createmode == NFS4_CREATE_EXCLUSIVE4_1;
+}
+
/*
- * NFSv3 version of nfsd_create
+ * NFSv3 and NFSv4 version of nfsd_create
*/
__be32
-nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
+do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
char *fname, int flen, struct iattr *iap,
struct svc_fh *resfhp, int createmode, u32 *verifier,
int *truncp, int *created)
@@ -1396,7 +1398,7 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
if (err)
goto out;
- if (createmode == NFS3_CREATE_EXCLUSIVE) {
+ if (nfsd_create_is_exclusive(createmode)) {
/* solaris7 gets confused (bugid 4218508) if these have
* the high bit set, so just clear the high bits. If this is
* ever changed to use different attrs for storing the
@@ -1437,6 +1439,11 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
&& dchild->d_inode->i_atime.tv_sec == v_atime
&& dchild->d_inode->i_size == 0 )
break;
+ case NFS4_CREATE_EXCLUSIVE4_1:
+ if ( dchild->d_inode->i_mtime.tv_sec == v_mtime
+ && dchild->d_inode->i_atime.tv_sec == v_atime
+ && dchild->d_inode->i_size == 0 )
+ goto set_attr;
/* fallthru */
case NFS3_CREATE_GUARDED:
err = nfserr_exist;
@@ -1455,7 +1462,7 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
nfsd_check_ignore_resizing(iap);
- if (createmode == NFS3_CREATE_EXCLUSIVE) {
+ if (nfsd_create_is_exclusive(createmode)) {
/* Cram the verifier into atime/mtime */
iap->ia_valid = ATTR_MTIME|ATTR_ATIME
| ATTR_MTIME_SET|ATTR_ATIME_SET;
@@ -2034,7 +2041,7 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
struct inode *inode = dentry->d_inode;
int err;
- if (acc == NFSD_MAY_NOP)
+ if ((acc & NFSD_MAY_MASK) == NFSD_MAY_NOP)
return 0;
#if 0
dprintk("nfsd: permission 0x%x%s%s%s%s%s%s%s mode 0%o%s%s%s\n",