+/*
+ * Read data from a file. count must contain the requested read count
+ * on entry. On return, *count contains the number of bytes actually read.
+ * N.B. After this call fhp needs an fh_put
+ */
+int
+nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
+ loff_t offset, struct kvec *vec, int vlen,
+ unsigned long *count)
+{
+ int err;
+
+ if (file) {
+ err = nfsd_permission(fhp->fh_export, fhp->fh_dentry,
+ MAY_READ|MAY_OWNER_OVERRIDE);
+ if (err)
+ goto out;
+ err = nfsd_vfs_read(rqstp, fhp, file, offset, vec, vlen, count);
+ } else {
+ err = nfsd_open(rqstp, fhp, S_IFREG, MAY_READ, &file);
+ if (err)
+ goto out;
+ err = nfsd_vfs_read(rqstp, fhp, file, offset, vec, vlen, count);
+ nfsd_close(file);
+ }
+out:
+ return err;
+}
+
+/*
+ * Write data to a file.
+ * The stable flag requests synchronous writes.
+ * N.B. After this call fhp needs an fh_put
+ */
+int
+nfsd_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
+ loff_t offset, struct kvec *vec, int vlen, unsigned long cnt,
+ int *stablep)
+{
+ int err = 0;
+
+ if (file) {
+ err = nfsd_permission(fhp->fh_export, fhp->fh_dentry,
+ MAY_WRITE|MAY_OWNER_OVERRIDE);
+ if (err)
+ goto out;
+ err = nfsd_vfs_write(rqstp, fhp, file, offset, vec, vlen, cnt,
+ stablep);
+ } else {
+ err = nfsd_open(rqstp, fhp, S_IFREG, MAY_WRITE, &file);
+ if (err)
+ goto out;
+
+ if (cnt)
+ err = nfsd_vfs_write(rqstp, fhp, file, offset, vec, vlen,
+ cnt, stablep);
+ nfsd_close(file);
+ }
+out:
+ return err;
+}