struct module

리눅스에서 디바이스 장치별 모듈을 사용하는데 있어서, 사용되는 모듈 구조체에 대한 내용이다.
모듈 구조체에 대한 내용은 현재의 커널 버젼밑에 /include/linux/module.h에 정의되어 있다.
(현재 커널버젼을 확인하는 명령어는 uname -r 이다.)
struct module { enum module_state state; //현재 모듈의 상태값을 저장하는 변수. /* 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 unsigned long *crcs; unsigned int num_syms; /* Kernel parameters. */ struct kernel_param *kp; unsigned int num_kp; /* GPL-only exported symbols. */ unsigned int num_gpl_syms; const struct kernel_symbol *gpl_syms; const unsigned long *gpl_crcs; #ifdef CONFIG_UNUSED_SYMBOLS /* unused exported symbols. */ const struct kernel_symbol *unused_syms; const unsigned long *unused_crcs; unsigned int num_unused_syms; /* GPL-only, unused exported symbols. */ unsigned int num_unused_gpl_syms; const struct kernel_symbol *unused_gpl_syms; const unsigned long *unused_gpl_crcs; #endif /* symbols that will be GPL-only in the near future. */ const struct kernel_symbol *gpl_future_syms; const unsigned long *gpl_future_crcs; unsigned int num_gpl_future_syms; /* Exception table */ unsigned int num_exentries; struct exception_table_entry *extable; /* Startup function. */ int (*init)(void); /* If this is non-NULL, vfree after init() returns */ void *module_init; /* Here is the actual code + data, vfree'd on unload. */ void *module_core; /* Here are the sizes of the init and core sections */ unsigned int init_size, core_size; /* The size of the executable code in each section. */ unsigned int init_text_size, core_text_size; /* Arch-specific module values */ struct mod_arch_specific arch; unsigned int taints; /* same bits as kernel:tainted */ #ifdef CONFIG_GENERIC_BUG /* Support for BUG */ unsigned num_bugs; struct list_head bug_list; struct bug_entry *bug_table; #endif #ifdef CONFIG_KALLSYMS /* * We keep the symbol and string tables for kallsyms. * The core_* fields below are temporary, loader-only (they * could really be discarded after module init). */ Elf_Sym *symtab, *core_symtab; unsigned int num_symtab, core_num_syms; char *strtab, *core_strtab; /* Section attributes */ struct module_sect_attrs *sect_attrs; /* Notes attributes */ struct module_notes_attrs *notes_attrs; #endif /* Per-cpu data. */ void *percpu; /* The command line arguments (may be mangled). People like keeping pointers to this stuff */ char *args; #ifdef CONFIG_TRACEPOINTS struct tracepoint *tracepoints; unsigned int num_tracepoints; #endif #ifdef CONFIG_TRACING const char **trace_bprintk_fmt_start; unsigned int num_trace_bprintk_fmt; #endif #ifdef CONFIG_EVENT_TRACING struct ftrace_event_call *trace_events; unsigned int num_trace_events; #endif #ifdef CONFIG_FTRACE_MCOUNT_RECORD unsigned long *ftrace_callsites; unsigned int num_ftrace_callsites; #endif #ifdef CONFIG_MODULE_UNLOAD /* What modules depend on me? */ struct list_head modules_which_use_me; /* Who is waiting for us to be unloaded */ struct task_struct *waiter; /* Destruction function. */ void (*exit)(void); #ifdef CONFIG_SMP char *refptr; #else local_t ref; #endif #endif #ifdef CONFIG_CONSTRUCTORS /* Constructor functions. */ ctor_fn_t *ctors; unsigned int num_ctors; #endif }; #ifndef MODULE_ARCH_INIT #define MODULE_ARCH_INIT {} #endif