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ladybird/Userland/Libraries/LibC/sys/internals.h

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LibC: Avoid ninja-imports of system functions This adds a new header <sys/internals.h>, which provides access to LibC internals. This is in the interest of type-checking LibC itself, as well as enabling less-hacky access for uses like LinkDemo. And, of course, this progresses LibC towards building cleanly with -Wmissing-declarations.
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/*
* Copyright (c) 2020, the SerenityOS developers.
*
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
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* SPDX-License-Identifier: BSD-2-Clause
LibC: Avoid ninja-imports of system functions This adds a new header <sys/internals.h>, which provides access to LibC internals. This is in the interest of type-checking LibC itself, as well as enabling less-hacky access for uses like LinkDemo. And, of course, this progresses LibC towards building cleanly with -Wmissing-declarations.
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*/
#pragma once
#include <sys/cdefs.h>
__BEGIN_DECLS
LibC: Move C++ABI functions to cxxabi.cpp, typecheck cxa_atexit
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typedef void (*AtExitFunction)(void*);
LibC: Avoid ninja-imports of system functions This adds a new header <sys/internals.h>, which provides access to LibC internals. This is in the interest of type-checking LibC itself, as well as enabling less-hacky access for uses like LinkDemo. And, of course, this progresses LibC towards building cleanly with -Wmissing-declarations.
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extern void __libc_init();
extern void __malloc_init();
extern void __stdio_init();
extern void _init();
extern bool __environ_is_malloced;
LibC: Make it possible to use ASSERTs without initializing stdio
2020-10-10 17:47:21 +03:00
extern bool __stdio_is_initialized;
LibC: Avoid ninja-imports of system functions This adds a new header <sys/internals.h>, which provides access to LibC internals. This is in the interest of type-checking LibC itself, as well as enabling less-hacky access for uses like LinkDemo. And, of course, this progresses LibC towards building cleanly with -Wmissing-declarations.
2020-08-12 01:58:50 +02:00
LibC: Move C++ABI functions to cxxabi.cpp, typecheck cxa_atexit
2020-08-12 02:11:07 +02:00
int __cxa_atexit(AtExitFunction exit_function, void* parameter, void* dso_handle);
void __cxa_finalize(void* dso_handle);
[[noreturn]] void __cxa_pure_virtual() __attribute__((weak));
[[noreturn]] void __stack_chk_fail();
Build + LibC: Enable -fstack-protector-strong in user space Modify the user mode runtime to insert stack canaries to find stack corruptions. The `-fstack-protector-strong` variant was chosen because it catches more issues than vanilla `-fstack-protector`, but doesn't have substantial performance impact like `-fstack-protector-all`. Details: -fstack-protector enables stack protection for vulnerable functions that contain: * A character array larger than 8 bytes. * An 8-bit integer array larger than 8 bytes. * A call to alloca() with either a variable size or a constant size bigger than 8 bytes. -fstack-protector-strong enables stack protection for vulnerable functions that contain: * An array of any size and type. * A call to alloca(). * A local variable that has its address taken. Example of it catching corrupting in the `stack-smash` test: ``` courage ~ $ ./user/Tests/LibC/stack-smash [+] Starting the stack smash ... Error: Stack protector failure, stack smashing detected! Shell: Job 1 (/usr/Tests/LibC/stack-smash) Aborted ```
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[[noreturn]] void __stack_chk_fail_local();
LibC: Move C++ABI functions to cxxabi.cpp, typecheck cxa_atexit
2020-08-12 02:11:07 +02:00
LibC: Avoid ninja-imports of system functions This adds a new header <sys/internals.h>, which provides access to LibC internals. This is in the interest of type-checking LibC itself, as well as enabling less-hacky access for uses like LinkDemo. And, of course, this progresses LibC towards building cleanly with -Wmissing-declarations.
2020-08-12 01:58:50 +02:00
__END_DECLS
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