module.c File Reference

#include <linux/export.h>
#include <linux/moduleloader.h>
#include <linux/ftrace_event.h>
#include <linux/init.h>
#include <linux/kallsyms.h>
#include <linux/fs.h>
#include <linux/sysfs.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/elf.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/syscalls.h>
#include <linux/fcntl.h>
#include <linux/rcupdate.h>
#include <linux/capability.h>
#include <linux/cpu.h>
#include <linux/moduleparam.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/vermagic.h>
#include <linux/notifier.h>
#include <linux/sched.h>
#include <linux/stop_machine.h>
#include <linux/device.h>
#include <linux/string.h>
#include <linux/mutex.h>
#include <linux/rculist.h>
#include <asm/uaccess.h>
#include <asm/cacheflush.h>
#include <asm/mmu_context.h>
#include <linux/license.h>
#include <asm/sections.h>
#include <linux/tracepoint.h>
#include <linux/ftrace.h>
#include <linux/async.h>
#include <linux/percpu.h>
#include <linux/kmemleak.h>
#include <linux/jump_label.h>
#include <linux/pfn.h>
#include <linux/bsearch.h>
#include <linux/fips.h>
#include "module-internal.h"
#include <trace/events/module.h>

Go to the source code of this file.

Data Structures
struct	load_info
struct	find_symbol_arg

Macros
#define	CREATE_TRACE_POINTS
#define	ARCH_SHF_SMALL   0
#define	debug_align(X)   (X)
#define	MOD_NUMBER_OF_PAGES(BASE, SIZE)
#define	INIT_OFFSET_MASK   (1UL << (BITS_PER_LONG-1))
#define	symversion(base, idx)   NULL
#define	MODINFO_ATTR(field)

Functions
	DEFINE_MUTEX (module_mutex)
	EXPORT_SYMBOL_GPL (module_mutex)
	core_param (nomodule, modules_disabled, bint, 0)
int	register_module_notifier (struct notifier_block *nb)
	EXPORT_SYMBOL (register_module_notifier)
int	unregister_module_notifier (struct notifier_block *nb)
	EXPORT_SYMBOL (unregister_module_notifier)
void	__module_put_and_exit (struct module *mod, long code)
	EXPORT_SYMBOL (__module_put_and_exit)
bool	each_symbol_section (bool(*fn)(const struct symsearch *arr, struct module *owner, void *data), void *data)
	EXPORT_SYMBOL_GPL (each_symbol_section)
struct kernel_symbol *	find_symbol (const char *name, struct module **owner, const unsigned long **crc, bool gplok, bool warn)
	EXPORT_SYMBOL_GPL (find_symbol)
struct module *	find_module (const char *name)
	EXPORT_SYMBOL_GPL (find_module)
bool	is_module_percpu_address (unsigned long addr)
	MODINFO_ATTR (version)
	MODINFO_ATTR (srcversion)
int	ref_module (struct module *a, struct module *b)
	EXPORT_SYMBOL_GPL (ref_module)
void __weak	module_free (struct module *mod, void *module_region)
void __weak	module_arch_cleanup (struct module *mod)
void *	__symbol_get (const char *symbol)
	EXPORT_SYMBOL_GPL (__symbol_get)
unsigned int __weak	arch_mod_section_prepend (struct module *mod, unsigned int section)
void *__weak	module_alloc (unsigned long size)
int __weak	module_frob_arch_sections (Elf_Ehdr *hdr, Elf_Shdr *sechdrs, char *secstrings, struct module *mod)
int __weak	module_finalize (const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *me)
	SYSCALL_DEFINE3 (init_module, void __user *, umod, unsigned long, len, const char __user *, uargs)
struct exception_table_entry *	search_module_extables (unsigned long addr)
bool	is_module_address (unsigned long addr)
struct module *	__module_address (unsigned long addr)
	EXPORT_SYMBOL_GPL (__module_address)
bool	is_module_text_address (unsigned long addr)
struct module *	__module_text_address (unsigned long addr)
	EXPORT_SYMBOL_GPL (__module_text_address)
void	print_modules (void)

Variables
int	modules_disabled = 0
struct kernel_symbol	__start___ksymtab []
struct kernel_symbol	__stop___ksymtab []
struct kernel_symbol	__start___ksymtab_gpl []
struct kernel_symbol	__stop___ksymtab_gpl []
struct kernel_symbol	__start___ksymtab_gpl_future []
struct kernel_symbol	__stop___ksymtab_gpl_future []
const unsigned long	__start___kcrctab []
const unsigned long	__start___kcrctab_gpl []
const unsigned long	__start___kcrctab_gpl_future []
struct module_attribute	module_uevent

Macro Definition Documentation

#define ARCH_SHF_SMALL   0

Definition at line 68 of file module.c.

#define CREATE_TRACE_POINTS

Definition at line 64 of file module.c.

#define debug_align

(

X

)

(X)

Definition at line 79 of file module.c.

#define INIT_OFFSET_MASK   (1UL << (BITS_PER_LONG-1))

Definition at line 92 of file module.c.

#define MOD_NUMBER_OF_PAGES	(		BASE,
			SIZE
	)

Value:

(((SIZE) > 0) ?     \
        (PFN_DOWN((unsigned long)(BASE) + (SIZE) - 1) - \
             PFN_DOWN((unsigned long)BASE) + 1) \
        : (0UL))

Definition at line 86 of file module.c.

#define MODINFO_ATTR

(

field

)

Value:

static void setup_modinfo_##field(struct module *mod, const char *s)  \
{                                                                     \
    mod->field = kstrdup(s, GFP_KERNEL);                          \
}                                                                     \
static ssize_t show_modinfo_##field(struct module_attribute *mattr,   \
            struct module_kobject *mk, char *buffer)      \
{                                                                     \
    return sprintf(buffer, "%s\n", mk->mod->field);               \
}                                                                     \
static int modinfo_##field##_exists(struct module *mod)               \
{                                                                     \
    return mod->field != NULL;                                    \
}                                                                     \
static void free_modinfo_##field(struct module *mod)                  \
{                                                                     \
    kfree(mod->field);                                            \
    mod->field = NULL;                                            \
}                                                                     \
static struct module_attribute modinfo_##field = {                    \
    .attr = { .name = __stringify(field), .mode = 0444 },         \
    .show = show_modinfo_##field,                                 \
    .setup = setup_modinfo_##field,                               \
    .test = modinfo_##field##_exists,                             \
    .free = free_modinfo_##field,                                 \
};

Definition at line 576 of file module.c.

#define symversion	(		base,
			idx
	)		NULL

Definition at line 268 of file module.c.

Function Documentation

struct module* __module_address ( unsigned long  addr )

read

Definition at line 3557 of file module.c.

void __module_put_and_exit	(	struct module *	mod,
		long	code
	)

Definition at line 206 of file module.c.

struct module* __module_text_address ( unsigned long  addr )

read

Definition at line 3598 of file module.c.

void* __symbol_get

(

const char *

symbol

)

Definition at line 1879 of file module.c.

unsigned int __weak arch_mod_section_prepend	(	struct module *	mod,
		unsigned int	section
	)

Definition at line 2022 of file module.c.

core_param	(	nomodule	,
		modules_disabled	,
		bint	,
		0
	)

DEFINE_MUTEX

(

module_mutex

)

bool each_symbol_section	(	bool(*)(const struct symsearch *arr, struct module *owner, void *data)	fn,
		void *	data
	)

Definition at line 292 of file module.c.

EXPORT_SYMBOL

(

register_module_notifier

)

EXPORT_SYMBOL

(

unregister_module_notifier

)

EXPORT_SYMBOL

(

__module_put_and_exit

)

EXPORT_SYMBOL_GPL

(

module_mutex

)

EXPORT_SYMBOL_GPL

(

each_symbol_section

)

EXPORT_SYMBOL_GPL

(

find_symbol

)

EXPORT_SYMBOL_GPL

(

find_module

)

EXPORT_SYMBOL_GPL

(

ref_module

)

EXPORT_SYMBOL_GPL

(

__symbol_get

)

EXPORT_SYMBOL_GPL

(

__module_address

)

EXPORT_SYMBOL_GPL

(

__module_text_address

)

struct module* find_module ( const char *  name )

read

Definition at line 453 of file module.c.

struct kernel_symbol* find_symbol ( const char *  name, struct module **  owner, const unsigned long **  crc, bool  gplok, bool  warn  )

read

Definition at line 427 of file module.c.

bool is_module_address

(

unsigned long

addr

)

Definition at line 3539 of file module.c.

bool is_module_percpu_address

(

unsigned long

addr

)

Definition at line 569 of file module.c.

bool is_module_text_address

(

unsigned long

addr

)

Definition at line 3580 of file module.c.

MODINFO_ATTR

(

version

)

MODINFO_ATTR

(

srcversion

)

void* __weak module_alloc

(

unsigned long

size

)

Definition at line 2379 of file module.c.

void __weak module_arch_cleanup

(

struct module *

mod

)

Definition at line 1834 of file module.c.

int __weak module_finalize	(	const Elf_Ehdr *	hdr,
		const Elf_Shdr *	sechdrs,
		struct module *	me
	)

Definition at line 2911 of file module.c.

void __weak module_free	(	struct module *	mod,
		void *	module_region
	)

Definition at line 1829 of file module.c.

int __weak module_frob_arch_sections	(	Elf_Ehdr *	hdr,
		Elf_Shdr *	sechdrs,
		char *	secstrings,
		struct module *	mod
	)

Definition at line 2842 of file module.c.

void print_modules

(

void

)

Definition at line 3612 of file module.c.

int ref_module	(	struct module *	a,
		struct module *	b
	)

Definition at line 1004 of file module.c.

int register_module_notifier

(

struct notifier_block *

nb

)

Definition at line 158 of file module.c.

struct exception_table_entry* search_module_extables ( unsigned long  addr )

read

Definition at line 3509 of file module.c.

SYSCALL_DEFINE3	(	init_module	,
		void __user *	,
		umod	,
		unsigned	long,
		len	,
		const char __user *	,
		uargs
	)

Definition at line 3110 of file module.c.

int unregister_module_notifier

(

struct notifier_block *

nb

)

Definition at line 164 of file module.c.

Variable Documentation

const unsigned long __start___kcrctab[]

const unsigned long __start___kcrctab_gpl[]

const unsigned long __start___kcrctab_gpl_future[]

struct kernel_symbol __start___ksymtab[]

struct kernel_symbol __start___ksymtab_gpl[]

struct kernel_symbol __start___ksymtab_gpl_future[]

struct kernel_symbol __stop___ksymtab[]

struct kernel_symbol __stop___ksymtab_gpl[]

struct kernel_symbol __stop___ksymtab_gpl_future[]

struct module_attribute module_uevent

Initial value:

=
    __ATTR(uevent, 0200, NULL, store_uevent)

Definition at line 1069 of file module.c.

int modules_disabled = 0

Definition at line 146 of file module.c.