Mastering Linux Kernel Development

Module data structures

Every module that is deployed in the kernel is as usual represented through a descriptor, called struct module. Kernel maintains a list of module instances, with each representing a specific module in memory:

struct module {
        enum module_state state;

        /* Member of list of modules */
        struct list_head list;

        /* Unique handle for this module */
        char name[MODULE_NAME_LEN];

        /* Sysfs stuff. */
        struct module_kobject mkobj;
        struct module_attribute *modinfo_attrs;
        const char *version;
        const char *srcversion;
        struct kobject *holders_dir;

        /* Exported symbols */
        const struct kernel_symbol *syms;
        const s32 *crcs;
        unsigned int num_syms;

        /* Kernel parameters. */
#ifdef CONFIG_SYSFS
        struct mutex param_lock;
#endif
        struct kernel_param ...