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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-20 14:16:02 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
Pull integrity updates from Mimi Zohar: "The major feature in this time is IMA support for measuring and appraising appended file signatures. In addition are a couple of bug fixes and code cleanup to use struct_size(). In addition to the PE/COFF and IMA xattr signatures, the kexec kernel image may be signed with an appended signature, using the same scripts/sign-file tool that is used to sign kernel modules. Similarly, the initramfs may contain an appended signature. This contained a lot of refactoring of the existing appended signature verification code, so that IMA could retain the existing framework of calculating the file hash once, storing it in the IMA measurement list and extending the TPM, verifying the file's integrity based on a file hash or signature (eg. xattrs), and adding an audit record containing the file hash, all based on policy. (The IMA support for appended signatures patch set was posted and reviewed 11 times.) The support for appended signature paves the way for adding other signature verification methods, such as fs-verity, based on a single system-wide policy. The file hash used for verifying the signature and the signature, itself, can be included in the IMA measurement list" * 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity: ima: ima_api: Use struct_size() in kzalloc() ima: use struct_size() in kzalloc() sefltest/ima: support appended signatures (modsig) ima: Fix use after free in ima_read_modsig() MODSIGN: make new include file self contained ima: fix freeing ongoing ahash_request ima: always return negative code for error ima: Store the measurement again when appraising a modsig ima: Define ima-modsig template ima: Collect modsig ima: Implement support for module-style appended signatures ima: Factor xattr_verify() out of ima_appraise_measurement() ima: Add modsig appraise_type option for module-style appended signatures integrity: Select CONFIG_KEYS instead of depending on it PKCS#7: Introduce pkcs7_get_digest() PKCS#7: Refactor verify_pkcs7_signature() MODSIGN: Export module signature definitions ima: initialize the "template" field with the default template
896 lines
24 KiB
C
896 lines
24 KiB
C
#ifndef _LINUX_MODULE_H
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#define _LINUX_MODULE_H
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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 <rth@tamu.edu> Dec 1996
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* Rewritten again by Rusty Russell, 2002
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*/
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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/percpu.h>
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#include <asm/module.h>
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/* Not Yet Implemented */
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#define MODULE_SUPPORTED_DEVICE(name)
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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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} __attribute__ ((__aligned__(sizeof(void *))));
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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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* 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_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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.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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static const struct module_version_attribute \
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__used __attribute__ ((__section__ ("__modver"))) \
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* __moduleparam_const __modver_attr = &___modver_attr
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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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#ifdef CONFIG_UNUSED_SYMBOLS
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/* unused exported symbols. */
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const struct kernel_symbol *unused_syms;
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const s32 *unused_crcs;
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unsigned int num_unused_syms;
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/* GPL-only, unused exported symbols. */
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unsigned int num_unused_gpl_syms;
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const struct kernel_symbol *unused_gpl_syms;
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const s32 *unused_gpl_crcs;
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#endif
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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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/* symbols that will be GPL-only in the near future. */
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const struct kernel_symbol *gpl_future_syms;
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const s32 *gpl_future_crcs;
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unsigned int num_gpl_future_syms;
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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 *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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#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_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;
|
|
#endif
|
|
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
|
|
unsigned int num_ftrace_callsites;
|
|
unsigned long *ftrace_callsites;
|
|
#endif
|
|
|
|
#ifdef CONFIG_LIVEPATCH
|
|
bool klp; /* Is this a livepatch module? */
|
|
bool klp_alive;
|
|
|
|
/* Elf information */
|
|
struct klp_modinfo *klp_info;
|
|
#endif
|
|
|
|
#ifdef CONFIG_MODULE_UNLOAD
|
|
/* What modules depend on me? */
|
|
struct list_head source_list;
|
|
/* What modules do I depend on? */
|
|
struct list_head target_list;
|
|
|
|
/* Destruction function. */
|
|
void (*exit)(void);
|
|
|
|
atomic_t refcnt;
|
|
#endif
|
|
|
|
#ifdef CONFIG_CONSTRUCTORS
|
|
/* Constructor functions. */
|
|
ctor_fn_t *ctors;
|
|
unsigned int num_ctors;
|
|
#endif
|
|
|
|
#ifdef CONFIG_FUNCTION_ERROR_INJECTION
|
|
struct error_injection_entry *ei_funcs;
|
|
unsigned int num_ei_funcs;
|
|
#endif
|
|
} ____cacheline_aligned __randomize_layout;
|
|
#ifndef MODULE_ARCH_INIT
|
|
#define MODULE_ARCH_INIT {}
|
|
#endif
|
|
|
|
#ifndef HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
|
|
static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
|
|
{
|
|
return sym->st_value;
|
|
}
|
|
#endif
|
|
|
|
extern struct mutex module_mutex;
|
|
|
|
/* FIXME: It'd be nice to isolate modules during init, too, so they
|
|
aren't used before they (may) fail. But presently too much code
|
|
(IDE & SCSI) require entry into the module during init.*/
|
|
static inline bool module_is_live(struct module *mod)
|
|
{
|
|
return mod->state != MODULE_STATE_GOING;
|
|
}
|
|
|
|
struct module *__module_text_address(unsigned long addr);
|
|
struct module *__module_address(unsigned long addr);
|
|
bool is_module_address(unsigned long addr);
|
|
bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr);
|
|
bool is_module_percpu_address(unsigned long addr);
|
|
bool is_module_text_address(unsigned long addr);
|
|
|
|
static inline bool within_module_core(unsigned long addr,
|
|
const struct module *mod)
|
|
{
|
|
return (unsigned long)mod->core_layout.base <= addr &&
|
|
addr < (unsigned long)mod->core_layout.base + mod->core_layout.size;
|
|
}
|
|
|
|
static inline bool within_module_init(unsigned long addr,
|
|
const struct module *mod)
|
|
{
|
|
return (unsigned long)mod->init_layout.base <= addr &&
|
|
addr < (unsigned long)mod->init_layout.base + mod->init_layout.size;
|
|
}
|
|
|
|
static inline bool within_module(unsigned long addr, const struct module *mod)
|
|
{
|
|
return within_module_init(addr, mod) || within_module_core(addr, mod);
|
|
}
|
|
|
|
/* Search for module by name: must hold module_mutex. */
|
|
struct module *find_module(const char *name);
|
|
|
|
struct symsearch {
|
|
const struct kernel_symbol *start, *stop;
|
|
const s32 *crcs;
|
|
enum {
|
|
NOT_GPL_ONLY,
|
|
GPL_ONLY,
|
|
WILL_BE_GPL_ONLY,
|
|
} licence;
|
|
bool unused;
|
|
};
|
|
|
|
/*
|
|
* Search for an exported symbol by name.
|
|
*
|
|
* Must be called with module_mutex held or preemption disabled.
|
|
*/
|
|
const struct kernel_symbol *find_symbol(const char *name,
|
|
struct module **owner,
|
|
const s32 **crc,
|
|
bool gplok,
|
|
bool warn);
|
|
|
|
/*
|
|
* Walk the exported symbol table
|
|
*
|
|
* Must be called with module_mutex held or preemption disabled.
|
|
*/
|
|
bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
|
|
struct module *owner,
|
|
void *data), void *data);
|
|
|
|
/* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
|
|
symnum out of range. */
|
|
int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
|
|
char *name, char *module_name, int *exported);
|
|
|
|
/* Look for this name: can be of form module:name. */
|
|
unsigned long module_kallsyms_lookup_name(const char *name);
|
|
|
|
int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
|
|
struct module *, unsigned long),
|
|
void *data);
|
|
|
|
extern void __noreturn __module_put_and_exit(struct module *mod,
|
|
long code);
|
|
#define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code)
|
|
|
|
#ifdef CONFIG_MODULE_UNLOAD
|
|
int module_refcount(struct module *mod);
|
|
void __symbol_put(const char *symbol);
|
|
#define symbol_put(x) __symbol_put(__stringify(x))
|
|
void symbol_put_addr(void *addr);
|
|
|
|
/* 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);
|
|
|
|
/* 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);
|
|
|
|
extern void module_put(struct module *module);
|
|
|
|
#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)
|
|
|
|
#endif /* CONFIG_MODULE_UNLOAD */
|
|
int ref_module(struct module *a, struct module *b);
|
|
|
|
/* 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);
|
|
|
|
/* 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);
|
|
|
|
int register_module_notifier(struct notifier_block *nb);
|
|
int unregister_module_notifier(struct notifier_block *nb);
|
|
|
|
extern void print_modules(void);
|
|
|
|
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);
|
|
|
|
#else /* !CONFIG_MODULES... */
|
|
|
|
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)); &(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 module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
|
|
struct module *,
|
|
unsigned long),
|
|
void *data)
|
|
{
|
|
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_STRICT_MODULE_RWX
|
|
extern void set_all_modules_text_rw(void);
|
|
extern void set_all_modules_text_ro(void);
|
|
extern void module_enable_ro(const struct module *mod, bool after_init);
|
|
extern void module_disable_ro(const struct module *mod);
|
|
#else
|
|
static inline void set_all_modules_text_rw(void) { }
|
|
static inline void set_all_modules_text_ro(void) { }
|
|
static inline void module_enable_ro(const struct module *mod, bool after_init) { }
|
|
static inline void module_disable_ro(const struct module *mod) { }
|
|
#endif
|
|
|
|
#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 */
|
|
|
|
#endif /* _LINUX_MODULE_H */
|