modify to the way we used XDR definitions files (.x files)

Earlier:
step 1: copy the existing <xdr>.x files to /tmp
step 2: generate '.[ch]' files using 'rpcgen <xdr>.x'
step 3: check diff with the to the existing files, add only your part
        of changes back to the original file. (ignore other changes).
step 4: there is another file to write wrapper functions to convert
        structures to/from XDR buffers, update it with your new structure.
step 5: use these wrapper functions in the newly written procedures.
step 6: commit :-|

Now:
step 1: update (mostly adding only) the <xdr>.x file
step 2: run '<path-to-src>/extras/generate-xdr-files.sh <xdr>.x' command
step 3: implement rpc procedure to handle the request/response.
step 4: commit :-)

Change-Id: I219f9159fc980438c86e847c6b030be96e595ea2
BUG: 3488
Reviewed-on: http://review.gluster.com/341
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/extras/generate-xdr-files.sh b/extras/generate-xdr-files.sh
new file mode 100755
index 00000000000..fd1733bc8e2
--- /dev/null
+++ b/extras/generate-xdr-files.sh
@@ -0,0 +1,100 @@
+#!/bin/sh
+
+_init ()
+{
+    xfile="$1";
+    # TODO: check the validity of .x file
+
+    cfile="${1%.x}.c";
+    hfile="${1%.x}.h";
+
+    tmp_cfile="$1.c";
+
+    tmp1_hfile="$1.h.tmp";
+    tmp1_cfile="$1.c.tmp";
+
+}
+
+append_licence_header ()
+{
+    src_file=$1;
+    dst_file=$2;
+
+    cat >$dst_file <<EOF
+/*
+  Copyright (c) 2007-2011 Gluster, Inc. <http://www.gluster.com>
+  This file is part of GlusterFS.
+
+  GlusterFS is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#include "xdr-common.h"
+
+EOF
+
+    cat $src_file >> $dst_file;
+
+}
+
+main ()
+{
+    if [ $# -ne 1 ]; then
+        echo "wrong number of arguments given"
+        echo " $0 <XDR-definition-file>.x"
+        exit 1;
+    fi
+
+
+    echo -n "writing the XDR routine file ($tmp_cfile) ...  ";
+    rm -f $tmp_cfile;
+    rpcgen -c -o $tmp_cfile $xfile;
+
+    # get rid of warnings in xdr .c file due to "unused variable 'buf'"
+    sed -i -e 's:buf;$:buf;\
+        buf = NULL;:' $tmp_cfile;
+
+    sed -i '/int i;/d' $tmp_cfile;
+
+    echo "OK";
+
+    # no need for a temporary file here as there are no changes from glusterfs
+    echo -n "writing the XDR header file ($hfile) ...  ";
+    rm -f $hfile;
+    rpcgen -h -o $hfile $xfile;
+
+    # the '#ifdef' part of file should be fixed
+    sed -i -e 's:\(.*\)-\(.*\)_H_RPCGEN:\1_\2_H_RPCGEN:g' $hfile;
+
+    echo "OK";
+
+    echo -n "writing licence header to the generated files ... ";
+    # Write header to temp file and append generated file
+    append_licence_header $hfile $tmp1_hfile;
+    append_licence_header $tmp_cfile $tmp1_cfile;
+    echo "OK"
+
+    # now move the destination file to actual original file
+    echo -n "updating existing files ... ";
+    mv $tmp1_hfile $hfile;
+    mv $tmp1_cfile $cfile;
+
+    # remove unwanted temporary files (if any)
+    rm -f $tmp_cfile $tmp1_cfile $tmp1_hfile
+
+    echo "OK"
+
+}
+
+_init "$@" && main "$@";