ACIL FM

Pilih semua

Nama	Ukuran	Aksi
assert.h	7.49 MB	View DL Edit
attributes.h	1.35 MB	View DL Edit
device.h	2.77 MB	View DL Edit
resource.h	15.69 MB	View DL Edit
skbuff.h	1.32 MB	View DL Edit
static_stub.h	3.6 MB	View DL Edit
test-bug.h	2 MB	View DL Edit
test.h	54.98 MB	View DL Edit
try-catch.h	2.23 MB	View DL Edit
visibility.h	1018 B	View DL Edit

Edit file: /usr/src/kernels/5.14.0-611.34.1.el9_7.x86_64/include/kunit/static_stub.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * KUnit function redirection (static stubbing) API.
 *
 * Copyright (C) 2022, Google LLC.
 * Author: David Gow <davidgow@google.com>
 */
#ifndef _KUNIT_STATIC_STUB_H
#define _KUNIT_STATIC_STUB_H

#if !IS_ENABLED(CONFIG_KUNIT)

/* If CONFIG_KUNIT is not enabled, these stubs quietly disappear. */
#define KUNIT_STATIC_STUB_REDIRECT(real_fn_name, args...) do {} while (0)

#else

#include <kunit/test.h>
#include <kunit/test-bug.h>

#include <linux/compiler.h> /* for {un,}likely() */
#include <linux/sched.h> /* for task_struct */

/**
 * KUNIT_STATIC_STUB_REDIRECT() - call a replacement 'static stub' if one exists
 * @real_fn_name: The name of this function (as an identifier, not a string)
 * @args: All of the arguments passed to this function
 *
 * This is a function prologue which is used to allow calls to the current
 * function to be redirected by a KUnit test. KUnit tests can call
 * kunit_activate_static_stub() to pass a replacement function in. The
 * replacement function will be called by KUNIT_STATIC_STUB_REDIRECT(), which
 * will then return from the function. If the caller is not in a KUnit context,
 * the function will continue execution as normal.
 *
 * Example:
 *
 * .. code-block:: c
 *
 *	int real_func(int n)
 *	{
 *		KUNIT_STATIC_STUB_REDIRECT(real_func, n);
 *		return 0;
 *	}
 *
 *	int replacement_func(int n)
 *	{
 *		return 42;
 *	}
 *
 *	void example_test(struct kunit *test)
 *	{
 *		kunit_activate_static_stub(test, real_func, replacement_func);
 *		KUNIT_EXPECT_EQ(test, real_func(1), 42);
 *	}
 *
 */
#define KUNIT_STATIC_STUB_REDIRECT(real_fn_name, args...)		\
do {									\
	typeof(&real_fn_name) replacement;				\
	struct kunit *current_test = kunit_get_current_test();		\
									\
	if (likely(!current_test))					\
		break;							\
									\
	replacement = kunit_hooks.get_static_stub_address(current_test,	\
							&real_fn_name);	\
									\
	if (unlikely(replacement))					\
		return replacement(args);				\
} while (0)

/* Helper function for kunit_activate_static_stub(). The macro does
 * typechecking, so use it instead.
 */
void __kunit_activate_static_stub(struct kunit *test,
				  void *real_fn_addr,
				  void *replacement_addr);

/**
 * kunit_activate_static_stub() - replace a function using static stubs.
 * @test: A pointer to the 'struct kunit' test context for the current test.
 * @real_fn_addr: The address of the function to replace.
 * @replacement_addr: The address of the function to replace it with.
 *
 * When activated, calls to real_fn_addr from within this test (even if called
 * indirectly) will instead call replacement_addr. The function pointed to by
 * real_fn_addr must begin with the static stub prologue in
 * KUNIT_STATIC_STUB_REDIRECT() for this to work. real_fn_addr and
 * replacement_addr must have the same type.
 *
 * The redirection can be disabled again with kunit_deactivate_static_stub().
 */
#define kunit_activate_static_stub(test, real_fn_addr, replacement_addr) do {	\
	typecheck_fn(typeof(&replacement_addr), real_fn_addr);			\
	__kunit_activate_static_stub(test, real_fn_addr, replacement_addr);	\
} while (0)

/**
 * kunit_deactivate_static_stub() - disable a function redirection
 * @test: A pointer to the 'struct kunit' test context for the current test.
 * @real_fn_addr: The address of the function to no-longer redirect
 *
 * Deactivates a redirection configured with kunit_activate_static_stub(). After
 * this function returns, calls to real_fn_addr() will execute the original
 * real_fn, not any previously-configured replacement.
 */
void kunit_deactivate_static_stub(struct kunit *test, void *real_fn_addr);

#endif
#endif

Batal

Isi Zip:

Create