compilation error for non - su

[Pradeep Singh <pradeep.singh.rautela@xxxxxxxxx>]

hi all 




i recently tried writing a very simple module for 2.6 kernel series.




its a simple hello world program from ldd 3rd ed.




when i create a Makefile and do a make, it gives me a warning mesg saying 




error : file .module.o.d  doesnt have required permissions.




from where did this file come into picture. 




i changed the permission masks using chmod 777 .module.o.d and then tried make .




now it runs fine but makes the module as hello.o while i need a hello.ko ... :-( 




y is this happening? 




i have used the Makefile given in the 2nd chapter of ldd 3rd ed by rubini.

i must add that when i did the same thing as root nothing wrong happend but happened nly wen i m compliing the module as non-root user. 

y is this? i should b able to compile , if i m not wrong u need su permissions to insert the module not to compile it. 


i also want to know there were also some files which showed up only when i used ls -la like .hello.cmd .o etc , wat r these ? theri significance? 




TIA 




regards

-- 
play the game