make static nodes using udev rules

generate_mknods.py

@@ -19,7 +19,7 @@
 @author:     Andrey Filippov
 @copyright:  2016 Elphel, Inc.
 @license:    GPLv3.0+
-@contact:    andrey@elphel.coml
+@contact:    andrey@elphel.com
 @deffield    updated: Updated
 '''
 from __future__ import division
@@ -34,7 +34,26 @@ __version__ = "3.0+"
 __maintainer__ = "Andrey Filippov"
 __email__ = "andrey@elphel.com"
 __status__ = "Development"
+
+def create_udev_rules_file(contents):
+  c  = "# --- This is an auto-generated file, see "+sys.argv[0]+"\n"
+  c += "ACTION!=\"add\", GOTO=\"static_nodes_end\"\n\n"
+  c += contents
+  c += "\nLABEL=\"static_nodes_end\""
+
+  f = open('50-elphel-static-nodes.rules','w')
+  f.write(c)
+  f.close()
+
+def get_udev_rule(mode, name, devtype, major, minor,comment):
+  tmpstr  = comment.strip()+"\n"
+  tmpstr += "ACTION==\"add\", RUN+=\"/bin/mknod -m "+mode+" /dev/"+name+" "+devtype+" "+major+" "+minor+"\"\n"
+  return tmpstr
+
 def process_header():
+
+    rulestr = ""
+
     print("# --- This is an auto-generated file, see %s ---"%(sys.argv[0]))
     print("define mknodes =")
     pat=re.compile(r'#define\s+(\w+)\s+\(\s*"([^"]+)"\s*,\s*"([^"]+)"\s*,\s*(\w*)\s*,\s*(\w*)\s*,\s*"([^"]+)"\s*,\s*"([^"]+)"\s*\)(.*)')
@@ -52,7 +71,14 @@ def process_header():
                 comment = " # "+comment
             print("mknod -m %s $(TARGETDIR)/%-20s %s %3s %3s%s"%(
                 fs.group(6), fs.group(2), fs.group(7), fs.group(4), fs.group(5), comment))
+
+            rulestr += get_udev_rule(fs.group(6), fs.group(2), fs.group(7), fs.group(4), fs.group(5), comment)
+
         line = f.readline()
+
+    if rulestr != "":
+        create_udev_rules_file(rulestr)
+
     print("endef")
 if __name__ == "__main__":
     process_header()