Hi, I am trying to debug some code I have written. I could not understand some code in the kernel. function sys_create_module() in module.c As far as I understand the functionality is as follows. in this mod is defined as a struct module *. checks the user is capable of loading the module. locks the kernel. the module name is taken from userspace into the variable 'name', defined locally. memset the vmalloc-ed (module_map) pointer with zeros. set the size_of_struct to size of the module structure. Next statement mod->name = (char *) (mod + 1) ; puzzles me. what does this statement do? if my knowledge of C is corrrect, since mod is a pointer of type struct module , mod+1 will point to ((void *) &mod)+(sizeof (*mod)), which is an invalid pointer here. Then how does this piece of code work? any idea? Thanks, Om. ------------------------------------------------------ "why shall I be afraid now? strange men have always come to kill me ever since I was twelve years of age" -- vito corleone, The godfather. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
