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853 lines
23 KiB
853 lines
23 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Dynamic loading of modules into the kernel. |
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* |
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* Rewritten by Richard Henderson <[email protected]> Dec 1996 |
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* Rewritten again by Rusty Russell, 2002 |
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*/ |
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#ifndef _LINUX_MODULE_H |
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#define _LINUX_MODULE_H |
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#include <linux/list.h> |
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#include <linux/stat.h> |
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#include <linux/compiler.h> |
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#include <linux/cache.h> |
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#include <linux/kmod.h> |
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#include <linux/init.h> |
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#include <linux/elf.h> |
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#include <linux/stringify.h> |
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#include <linux/kobject.h> |
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#include <linux/moduleparam.h> |
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#include <linux/jump_label.h> |
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#include <linux/export.h> |
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#include <linux/rbtree_latch.h> |
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#include <linux/error-injection.h> |
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#include <linux/tracepoint-defs.h> |
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#include <linux/srcu.h> |
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#include <linux/static_call_types.h> |
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#include <linux/percpu.h> |
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#include <asm/module.h> |
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#define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN |
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struct modversion_info { |
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unsigned long crc; |
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char name[MODULE_NAME_LEN]; |
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}; |
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struct module; |
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struct exception_table_entry; |
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struct module_kobject { |
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struct kobject kobj; |
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struct module *mod; |
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struct kobject *drivers_dir; |
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struct module_param_attrs *mp; |
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struct completion *kobj_completion; |
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} __randomize_layout; |
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struct module_attribute { |
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struct attribute attr; |
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ssize_t (*show)(struct module_attribute *, struct module_kobject *, |
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char *); |
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ssize_t (*store)(struct module_attribute *, struct module_kobject *, |
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const char *, size_t count); |
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void (*setup)(struct module *, const char *); |
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int (*test)(struct module *); |
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void (*free)(struct module *); |
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}; |
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struct module_version_attribute { |
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struct module_attribute mattr; |
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const char *module_name; |
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const char *version; |
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}; |
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extern ssize_t __modver_version_show(struct module_attribute *, |
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struct module_kobject *, char *); |
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extern struct module_attribute module_uevent; |
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/* These are either module local, or the kernel's dummy ones. */ |
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extern int init_module(void); |
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extern void cleanup_module(void); |
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#ifndef MODULE |
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/** |
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* module_init() - driver initialization entry point |
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* @x: function to be run at kernel boot time or module insertion |
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* |
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* module_init() will either be called during do_initcalls() (if |
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* builtin) or at module insertion time (if a module). There can only |
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* be one per module. |
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*/ |
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#define module_init(x) __initcall(x); |
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/** |
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* module_exit() - driver exit entry point |
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* @x: function to be run when driver is removed |
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* |
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* module_exit() will wrap the driver clean-up code |
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* with cleanup_module() when used with rmmod when |
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* the driver is a module. If the driver is statically |
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* compiled into the kernel, module_exit() has no effect. |
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* There can only be one per module. |
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*/ |
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#define module_exit(x) __exitcall(x); |
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#else /* MODULE */ |
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/* |
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* In most cases loadable modules do not need custom |
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* initcall levels. There are still some valid cases where |
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* a driver may be needed early if built in, and does not |
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* matter when built as a loadable module. Like bus |
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* snooping debug drivers. |
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*/ |
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#define early_initcall(fn) module_init(fn) |
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#define core_initcall(fn) module_init(fn) |
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#define core_initcall_sync(fn) module_init(fn) |
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#define postcore_initcall(fn) module_init(fn) |
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#define postcore_initcall_sync(fn) module_init(fn) |
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#define arch_initcall(fn) module_init(fn) |
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#define subsys_initcall(fn) module_init(fn) |
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#define subsys_initcall_sync(fn) module_init(fn) |
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#define fs_initcall(fn) module_init(fn) |
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#define fs_initcall_sync(fn) module_init(fn) |
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#define rootfs_initcall(fn) module_init(fn) |
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#define device_initcall(fn) module_init(fn) |
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#define device_initcall_sync(fn) module_init(fn) |
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#define late_initcall(fn) module_init(fn) |
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#define late_initcall_sync(fn) module_init(fn) |
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#define console_initcall(fn) module_init(fn) |
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/* Each module must use one module_init(). */ |
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#define module_init(initfn) \ |
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static inline initcall_t __maybe_unused __inittest(void) \ |
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{ return initfn; } \ |
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int init_module(void) __copy(initfn) __attribute__((alias(#initfn))); |
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/* This is only required if you want to be unloadable. */ |
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#define module_exit(exitfn) \ |
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static inline exitcall_t __maybe_unused __exittest(void) \ |
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{ return exitfn; } \ |
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void cleanup_module(void) __copy(exitfn) __attribute__((alias(#exitfn))); |
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#endif |
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/* This means "can be init if no module support, otherwise module load |
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may call it." */ |
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#ifdef CONFIG_MODULES |
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#define __init_or_module |
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#define __initdata_or_module |
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#define __initconst_or_module |
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#define __INIT_OR_MODULE .text |
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#define __INITDATA_OR_MODULE .data |
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#define __INITRODATA_OR_MODULE .section ".rodata","a",%progbits |
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#else |
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#define __init_or_module __init |
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#define __initdata_or_module __initdata |
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#define __initconst_or_module __initconst |
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#define __INIT_OR_MODULE __INIT |
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#define __INITDATA_OR_MODULE __INITDATA |
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#define __INITRODATA_OR_MODULE __INITRODATA |
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#endif /*CONFIG_MODULES*/ |
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/* Generic info of form tag = "info" */ |
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#define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info) |
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/* For userspace: you can also call me... */ |
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#define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias) |
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/* Soft module dependencies. See man modprobe.d for details. |
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* Example: MODULE_SOFTDEP("pre: module-foo module-bar post: module-baz") |
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*/ |
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#define MODULE_SOFTDEP(_softdep) MODULE_INFO(softdep, _softdep) |
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/* |
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* MODULE_FILE is used for generating modules.builtin |
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* So, make it no-op when this is being built as a module |
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*/ |
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#ifdef MODULE |
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#define MODULE_FILE |
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#else |
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#define MODULE_FILE MODULE_INFO(file, KBUILD_MODFILE); |
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#endif |
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/* |
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* The following license idents are currently accepted as indicating free |
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* software modules |
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* |
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* "GPL" [GNU Public License v2] |
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* "GPL v2" [GNU Public License v2] |
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* "GPL and additional rights" [GNU Public License v2 rights and more] |
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* "Dual BSD/GPL" [GNU Public License v2 |
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* or BSD license choice] |
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* "Dual MIT/GPL" [GNU Public License v2 |
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* or MIT license choice] |
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* "Dual MPL/GPL" [GNU Public License v2 |
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* or Mozilla license choice] |
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* |
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* The following other idents are available |
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* |
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* "Proprietary" [Non free products] |
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* |
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* Both "GPL v2" and "GPL" (the latter also in dual licensed strings) are |
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* merely stating that the module is licensed under the GPL v2, but are not |
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* telling whether "GPL v2 only" or "GPL v2 or later". The reason why there |
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* are two variants is a historic and failed attempt to convey more |
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* information in the MODULE_LICENSE string. For module loading the |
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* "only/or later" distinction is completely irrelevant and does neither |
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* replace the proper license identifiers in the corresponding source file |
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* nor amends them in any way. The sole purpose is to make the |
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* 'Proprietary' flagging work and to refuse to bind symbols which are |
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* exported with EXPORT_SYMBOL_GPL when a non free module is loaded. |
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* |
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* In the same way "BSD" is not a clear license information. It merely |
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* states, that the module is licensed under one of the compatible BSD |
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* license variants. The detailed and correct license information is again |
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* to be found in the corresponding source files. |
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* |
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* There are dual licensed components, but when running with Linux it is the |
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* GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL |
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* is a GPL combined work. |
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* |
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* This exists for several reasons |
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* 1. So modinfo can show license info for users wanting to vet their setup |
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* is free |
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* 2. So the community can ignore bug reports including proprietary modules |
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* 3. So vendors can do likewise based on their own policies |
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*/ |
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#define MODULE_LICENSE(_license) MODULE_FILE MODULE_INFO(license, _license) |
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/* |
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* Author(s), use "Name <email>" or just "Name", for multiple |
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* authors use multiple MODULE_AUTHOR() statements/lines. |
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*/ |
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#define MODULE_AUTHOR(_author) MODULE_INFO(author, _author) |
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/* What your module does. */ |
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#define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description) |
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#ifdef MODULE |
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/* Creates an alias so file2alias.c can find device table. */ |
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#define MODULE_DEVICE_TABLE(type, name) \ |
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extern typeof(name) __mod_##type##__##name##_device_table \ |
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__attribute__ ((unused, alias(__stringify(name)))) |
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#else /* !MODULE */ |
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#define MODULE_DEVICE_TABLE(type, name) |
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#endif |
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/* Version of form [<epoch>:]<version>[-<extra-version>]. |
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* Or for CVS/RCS ID version, everything but the number is stripped. |
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* <epoch>: A (small) unsigned integer which allows you to start versions |
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* anew. If not mentioned, it's zero. eg. "2:1.0" is after |
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* "1:2.0". |
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* <version>: The <version> may contain only alphanumerics and the |
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* character `.'. Ordered by numeric sort for numeric parts, |
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* ascii sort for ascii parts (as per RPM or DEB algorithm). |
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* <extraversion>: Like <version>, but inserted for local |
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* customizations, eg "rh3" or "rusty1". |
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* Using this automatically adds a checksum of the .c files and the |
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* local headers in "srcversion". |
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*/ |
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#if defined(MODULE) || !defined(CONFIG_SYSFS) |
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#define MODULE_VERSION(_version) MODULE_INFO(version, _version) |
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#else |
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#define MODULE_VERSION(_version) \ |
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MODULE_INFO(version, _version); \ |
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static struct module_version_attribute __modver_attr \ |
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__used __section("__modver") \ |
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__aligned(__alignof__(struct module_version_attribute)) \ |
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= { \ |
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.mattr = { \ |
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.attr = { \ |
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.name = "version", \ |
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.mode = S_IRUGO, \ |
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}, \ |
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.show = __modver_version_show, \ |
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}, \ |
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.module_name = KBUILD_MODNAME, \ |
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.version = _version, \ |
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} |
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#endif |
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/* Optional firmware file (or files) needed by the module |
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* format is simply firmware file name. Multiple firmware |
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* files require multiple MODULE_FIRMWARE() specifiers */ |
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#define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware) |
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#define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, #ns) |
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struct notifier_block; |
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#ifdef CONFIG_MODULES |
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extern int modules_disabled; /* for sysctl */ |
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/* Get/put a kernel symbol (calls must be symmetric) */ |
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void *__symbol_get(const char *symbol); |
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void *__symbol_get_gpl(const char *symbol); |
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#define symbol_get(x) ((typeof(&x))(__symbol_get(__stringify(x)))) |
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/* modules using other modules: kdb wants to see this. */ |
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struct module_use { |
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struct list_head source_list; |
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struct list_head target_list; |
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struct module *source, *target; |
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}; |
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enum module_state { |
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MODULE_STATE_LIVE, /* Normal state. */ |
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MODULE_STATE_COMING, /* Full formed, running module_init. */ |
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MODULE_STATE_GOING, /* Going away. */ |
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MODULE_STATE_UNFORMED, /* Still setting it up. */ |
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}; |
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struct mod_tree_node { |
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struct module *mod; |
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struct latch_tree_node node; |
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}; |
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struct module_layout { |
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/* The actual code + data. */ |
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void *base; |
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/* Total size. */ |
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unsigned int size; |
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/* The size of the executable code. */ |
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unsigned int text_size; |
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/* Size of RO section of the module (text+rodata) */ |
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unsigned int ro_size; |
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/* Size of RO after init section */ |
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unsigned int ro_after_init_size; |
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#ifdef CONFIG_MODULES_TREE_LOOKUP |
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struct mod_tree_node mtn; |
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#endif |
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}; |
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#ifdef CONFIG_MODULES_TREE_LOOKUP |
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/* Only touch one cacheline for common rbtree-for-core-layout case. */ |
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#define __module_layout_align ____cacheline_aligned |
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#else |
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#define __module_layout_align |
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#endif |
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struct mod_kallsyms { |
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Elf_Sym *symtab; |
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unsigned int num_symtab; |
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char *strtab; |
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char *typetab; |
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}; |
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#ifdef CONFIG_LIVEPATCH |
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struct klp_modinfo { |
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Elf_Ehdr hdr; |
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Elf_Shdr *sechdrs; |
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char *secstrings; |
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unsigned int symndx; |
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}; |
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#endif |
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struct module { |
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enum module_state state; |
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/* Member of list of modules */ |
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struct list_head list; |
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/* Unique handle for this module */ |
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char name[MODULE_NAME_LEN]; |
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/* Sysfs stuff. */ |
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struct module_kobject mkobj; |
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struct module_attribute *modinfo_attrs; |
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const char *version; |
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const char *srcversion; |
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struct kobject *holders_dir; |
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/* Exported symbols */ |
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const struct kernel_symbol *syms; |
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const s32 *crcs; |
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unsigned int num_syms; |
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/* Kernel parameters. */ |
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#ifdef CONFIG_SYSFS |
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struct mutex param_lock; |
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#endif |
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struct kernel_param *kp; |
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unsigned int num_kp; |
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/* GPL-only exported symbols. */ |
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unsigned int num_gpl_syms; |
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const struct kernel_symbol *gpl_syms; |
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const s32 *gpl_crcs; |
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bool using_gplonly_symbols; |
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#ifdef CONFIG_MODULE_SIG |
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/* Signature was verified. */ |
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bool sig_ok; |
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#endif |
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bool async_probe_requested; |
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/* Exception table */ |
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unsigned int num_exentries; |
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struct exception_table_entry *extable; |
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/* Startup function. */ |
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int (*init)(void); |
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/* Core layout: rbtree is accessed frequently, so keep together. */ |
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struct module_layout core_layout __module_layout_align; |
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struct module_layout init_layout; |
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/* Arch-specific module values */ |
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struct mod_arch_specific arch; |
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unsigned long taints; /* same bits as kernel:taint_flags */ |
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#ifdef CONFIG_GENERIC_BUG |
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/* Support for BUG */ |
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unsigned num_bugs; |
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struct list_head bug_list; |
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struct bug_entry *bug_table; |
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#endif |
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#ifdef CONFIG_KALLSYMS |
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/* Protected by RCU and/or module_mutex: use rcu_dereference() */ |
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struct mod_kallsyms __rcu *kallsyms; |
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struct mod_kallsyms core_kallsyms; |
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/* Section attributes */ |
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struct module_sect_attrs *sect_attrs; |
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/* Notes attributes */ |
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struct module_notes_attrs *notes_attrs; |
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#endif |
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/* The command line arguments (may be mangled). People like |
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keeping pointers to this stuff */ |
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char *args; |
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#ifdef CONFIG_SMP |
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/* Per-cpu data. */ |
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void __percpu *percpu; |
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unsigned int percpu_size; |
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#endif |
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void *noinstr_text_start; |
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unsigned int noinstr_text_size; |
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#ifdef CONFIG_TRACEPOINTS |
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unsigned int num_tracepoints; |
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tracepoint_ptr_t *tracepoints_ptrs; |
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#endif |
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#ifdef CONFIG_TREE_SRCU |
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unsigned int num_srcu_structs; |
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struct srcu_struct **srcu_struct_ptrs; |
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#endif |
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#ifdef CONFIG_BPF_EVENTS |
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unsigned int num_bpf_raw_events; |
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struct bpf_raw_event_map *bpf_raw_events; |
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#endif |
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#ifdef CONFIG_DEBUG_INFO_BTF_MODULES |
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unsigned int btf_data_size; |
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void *btf_data; |
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#endif |
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#ifdef CONFIG_JUMP_LABEL |
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struct jump_entry *jump_entries; |
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unsigned int num_jump_entries; |
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#endif |
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#ifdef CONFIG_TRACING |
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unsigned int num_trace_bprintk_fmt; |
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const char **trace_bprintk_fmt_start; |
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#endif |
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#ifdef CONFIG_EVENT_TRACING |
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struct trace_event_call **trace_events; |
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unsigned int num_trace_events; |
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struct trace_eval_map **trace_evals; |
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unsigned int num_trace_evals; |
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#endif |
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#ifdef CONFIG_FTRACE_MCOUNT_RECORD |
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unsigned int num_ftrace_callsites; |
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unsigned long *ftrace_callsites; |
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#endif |
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#ifdef CONFIG_KPROBES |
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void *kprobes_text_start; |
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unsigned int kprobes_text_size; |
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unsigned long *kprobe_blacklist; |
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unsigned int num_kprobe_blacklist; |
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#endif |
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#ifdef CONFIG_HAVE_STATIC_CALL_INLINE |
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int num_static_call_sites; |
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struct static_call_site *static_call_sites; |
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#endif |
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#ifdef CONFIG_LIVEPATCH |
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bool klp; /* Is this a livepatch module? */ |
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bool klp_alive; |
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/* Elf information */ |
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struct klp_modinfo *klp_info; |
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#endif |
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#ifdef CONFIG_MODULE_UNLOAD |
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/* What modules depend on me? */ |
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struct list_head source_list; |
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/* What modules do I depend on? */ |
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struct list_head target_list; |
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/* Destruction function. */ |
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void (*exit)(void); |
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atomic_t refcnt; |
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#endif |
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#ifdef CONFIG_CONSTRUCTORS |
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/* Constructor functions. */ |
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ctor_fn_t *ctors; |
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unsigned int num_ctors; |
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#endif |
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#ifdef CONFIG_FUNCTION_ERROR_INJECTION |
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struct error_injection_entry *ei_funcs; |
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unsigned int num_ei_funcs; |
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#endif |
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} ____cacheline_aligned __randomize_layout; |
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#ifndef MODULE_ARCH_INIT |
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#define MODULE_ARCH_INIT {} |
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#endif |
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#ifndef HAVE_ARCH_KALLSYMS_SYMBOL_VALUE |
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static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym) |
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{ |
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return sym->st_value; |
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} |
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#endif |
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/* FIXME: It'd be nice to isolate modules during init, too, so they |
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aren't used before they (may) fail. But presently too much code |
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(IDE & SCSI) require entry into the module during init.*/ |
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static inline bool module_is_live(struct module *mod) |
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{ |
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return mod->state != MODULE_STATE_GOING; |
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} |
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struct module *__module_text_address(unsigned long addr); |
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struct module *__module_address(unsigned long addr); |
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bool is_module_address(unsigned long addr); |
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bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr); |
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bool is_module_percpu_address(unsigned long addr); |
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bool is_module_text_address(unsigned long addr); |
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static inline bool within_module_core(unsigned long addr, |
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const struct module *mod) |
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{ |
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return (unsigned long)mod->core_layout.base <= addr && |
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addr < (unsigned long)mod->core_layout.base + mod->core_layout.size; |
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} |
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static inline bool within_module_init(unsigned long addr, |
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const struct module *mod) |
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{ |
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return (unsigned long)mod->init_layout.base <= addr && |
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addr < (unsigned long)mod->init_layout.base + mod->init_layout.size; |
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} |
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static inline bool within_module(unsigned long addr, const struct module *mod) |
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{ |
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return within_module_init(addr, mod) || within_module_core(addr, mod); |
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} |
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/* Search for module by name: must be in a RCU-sched critical section. */ |
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struct module *find_module(const char *name); |
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/* Returns 0 and fills in value, defined and namebuf, or -ERANGE if |
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symnum out of range. */ |
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int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, |
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char *name, char *module_name, int *exported); |
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/* Look for this name: can be of form module:name. */ |
|
unsigned long module_kallsyms_lookup_name(const char *name); |
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|
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extern void __noreturn __module_put_and_exit(struct module *mod, |
|
long code); |
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#define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code) |
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|
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#ifdef CONFIG_MODULE_UNLOAD |
|
int module_refcount(struct module *mod); |
|
void __symbol_put(const char *symbol); |
|
#define symbol_put(x) __symbol_put(__stringify(x)) |
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void symbol_put_addr(void *addr); |
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|
|
/* Sometimes we know we already have a refcount, and it's easier not |
|
to handle the error case (which only happens with rmmod --wait). */ |
|
extern void __module_get(struct module *module); |
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|
|
/* This is the Right Way to get a module: if it fails, it's being removed, |
|
* so pretend it's not there. */ |
|
extern bool try_module_get(struct module *module); |
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|
|
extern void module_put(struct module *module); |
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|
|
#else /*!CONFIG_MODULE_UNLOAD*/ |
|
static inline bool try_module_get(struct module *module) |
|
{ |
|
return !module || module_is_live(module); |
|
} |
|
static inline void module_put(struct module *module) |
|
{ |
|
} |
|
static inline void __module_get(struct module *module) |
|
{ |
|
} |
|
#define symbol_put(x) do { } while (0) |
|
#define symbol_put_addr(p) do { } while (0) |
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|
|
#endif /* CONFIG_MODULE_UNLOAD */ |
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|
|
/* This is a #define so the string doesn't get put in every .o file */ |
|
#define module_name(mod) \ |
|
({ \ |
|
struct module *__mod = (mod); \ |
|
__mod ? __mod->name : "kernel"; \ |
|
}) |
|
|
|
/* Dereference module function descriptor */ |
|
void *dereference_module_function_descriptor(struct module *mod, void *ptr); |
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|
|
/* For kallsyms to ask for address resolution. namebuf should be at |
|
* least KSYM_NAME_LEN long: a pointer to namebuf is returned if |
|
* found, otherwise NULL. */ |
|
const char *module_address_lookup(unsigned long addr, |
|
unsigned long *symbolsize, |
|
unsigned long *offset, |
|
char **modname, |
|
char *namebuf); |
|
int lookup_module_symbol_name(unsigned long addr, char *symname); |
|
int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name); |
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|
|
int register_module_notifier(struct notifier_block *nb); |
|
int unregister_module_notifier(struct notifier_block *nb); |
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|
|
extern void print_modules(void); |
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|
|
static inline bool module_requested_async_probing(struct module *module) |
|
{ |
|
return module && module->async_probe_requested; |
|
} |
|
|
|
#ifdef CONFIG_LIVEPATCH |
|
static inline bool is_livepatch_module(struct module *mod) |
|
{ |
|
return mod->klp; |
|
} |
|
#else /* !CONFIG_LIVEPATCH */ |
|
static inline bool is_livepatch_module(struct module *mod) |
|
{ |
|
return false; |
|
} |
|
#endif /* CONFIG_LIVEPATCH */ |
|
|
|
bool is_module_sig_enforced(void); |
|
void set_module_sig_enforced(void); |
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|
|
#else /* !CONFIG_MODULES... */ |
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|
|
static inline struct module *__module_address(unsigned long addr) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline struct module *__module_text_address(unsigned long addr) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline bool is_module_address(unsigned long addr) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool is_module_percpu_address(unsigned long addr) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool is_module_text_address(unsigned long addr) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool within_module_core(unsigned long addr, |
|
const struct module *mod) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool within_module_init(unsigned long addr, |
|
const struct module *mod) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool within_module(unsigned long addr, const struct module *mod) |
|
{ |
|
return false; |
|
} |
|
|
|
/* Get/put a kernel symbol (calls should be symmetric) */ |
|
#define symbol_get(x) ({ extern typeof(x) x __attribute__((weak,visibility("hidden"))); &(x); }) |
|
#define symbol_put(x) do { } while (0) |
|
#define symbol_put_addr(x) do { } while (0) |
|
|
|
static inline void __module_get(struct module *module) |
|
{ |
|
} |
|
|
|
static inline bool try_module_get(struct module *module) |
|
{ |
|
return true; |
|
} |
|
|
|
static inline void module_put(struct module *module) |
|
{ |
|
} |
|
|
|
#define module_name(mod) "kernel" |
|
|
|
/* For kallsyms to ask for address resolution. NULL means not found. */ |
|
static inline const char *module_address_lookup(unsigned long addr, |
|
unsigned long *symbolsize, |
|
unsigned long *offset, |
|
char **modname, |
|
char *namebuf) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static inline int lookup_module_symbol_name(unsigned long addr, char *symname) |
|
{ |
|
return -ERANGE; |
|
} |
|
|
|
static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) |
|
{ |
|
return -ERANGE; |
|
} |
|
|
|
static inline int module_get_kallsym(unsigned int symnum, unsigned long *value, |
|
char *type, char *name, |
|
char *module_name, int *exported) |
|
{ |
|
return -ERANGE; |
|
} |
|
|
|
static inline unsigned long module_kallsyms_lookup_name(const char *name) |
|
{ |
|
return 0; |
|
} |
|
|
|
static inline int register_module_notifier(struct notifier_block *nb) |
|
{ |
|
/* no events will happen anyway, so this can always succeed */ |
|
return 0; |
|
} |
|
|
|
static inline int unregister_module_notifier(struct notifier_block *nb) |
|
{ |
|
return 0; |
|
} |
|
|
|
#define module_put_and_exit(code) do_exit(code) |
|
|
|
static inline void print_modules(void) |
|
{ |
|
} |
|
|
|
static inline bool module_requested_async_probing(struct module *module) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool is_module_sig_enforced(void) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline void set_module_sig_enforced(void) |
|
{ |
|
} |
|
|
|
/* Dereference module function descriptor */ |
|
static inline |
|
void *dereference_module_function_descriptor(struct module *mod, void *ptr) |
|
{ |
|
return ptr; |
|
} |
|
|
|
#endif /* CONFIG_MODULES */ |
|
|
|
#ifdef CONFIG_SYSFS |
|
extern struct kset *module_kset; |
|
extern struct kobj_type module_ktype; |
|
extern int module_sysfs_initialized; |
|
#endif /* CONFIG_SYSFS */ |
|
|
|
#define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x) |
|
|
|
/* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */ |
|
|
|
#define __MODULE_STRING(x) __stringify(x) |
|
|
|
#ifdef CONFIG_GENERIC_BUG |
|
void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *, |
|
struct module *); |
|
void module_bug_cleanup(struct module *); |
|
|
|
#else /* !CONFIG_GENERIC_BUG */ |
|
|
|
static inline void module_bug_finalize(const Elf_Ehdr *hdr, |
|
const Elf_Shdr *sechdrs, |
|
struct module *mod) |
|
{ |
|
} |
|
static inline void module_bug_cleanup(struct module *mod) {} |
|
#endif /* CONFIG_GENERIC_BUG */ |
|
|
|
#ifdef CONFIG_RETPOLINE |
|
extern bool retpoline_module_ok(bool has_retpoline); |
|
#else |
|
static inline bool retpoline_module_ok(bool has_retpoline) |
|
{ |
|
return true; |
|
} |
|
#endif |
|
|
|
#ifdef CONFIG_MODULE_SIG |
|
static inline bool module_sig_ok(struct module *module) |
|
{ |
|
return module->sig_ok; |
|
} |
|
#else /* !CONFIG_MODULE_SIG */ |
|
static inline bool module_sig_ok(struct module *module) |
|
{ |
|
return true; |
|
} |
|
#endif /* CONFIG_MODULE_SIG */ |
|
|
|
int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *, |
|
struct module *, unsigned long), |
|
void *data); |
|
|
|
#endif /* _LINUX_MODULE_H */
|
|
|