ladybird/Userland/Libraries/LibC/dlfcn.h

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <sys/cdefs.h>

__BEGIN_DECLS

#define RTLD_DEFAULT 0
#define RTLD_LAZY 2
#define RTLD_NOW 4
#define RTLD_GLOBAL 8
#define RTLD_LOCAL 16

typedef struct __Dl_info {
    char const* dli_fname;
    void* dli_fbase;
    char const* dli_sname;
    void* dli_saddr;
} Dl_info;

int dlclose(void*);
char* dlerror(void);
void* dlopen(char const*, int);
void* dlsym(void*, char const*);
int dladdr(void const*, Dl_info*);

__END_DECLS
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header. 2020-01-18 09:38:21 +01:00			`/*`
			`* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>`
			`*`
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 * 2021-04-22 01:24:48 -07:00			`* SPDX-License-Identifier: BSD-2-Clause`
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header. 2020-01-18 09:38:21 +01:00			`*/`

LibC: Stub out dlfcn 2019-05-23 15:32:30 +02:00			`#pragma once`

LibC: Make dlfcn stubs extern "C" like the outside world expects. 2019-05-28 14:30:55 +02:00			`#include <sys/cdefs.h>`

			`__BEGIN_DECLS`

LibC: Misc additions 2019-10-02 22:48:14 +03:00			`#define RTLD_DEFAULT 0`
Loader: Add dynamic loader program The dynamic loader exists as /usr/lib/Loader.so and is loaded by the kernel when ET_DYN programs are executed. The dynamic loader is responsible for loading the dependencies of the main program, allocating TLS storage, preparing all loaded objects for execution and finally jumping to the entry of the main program. 2020-10-10 18:17:49 +03:00			`#define RTLD_LAZY 2`
			`#define RTLD_NOW 4`
			`#define RTLD_GLOBAL 8`
			`#define RTLD_LOCAL 16`
LibC: Stub out dlfcn 2019-05-23 15:32:30 +02:00
LibC+LibELF: Implement dladdr() This implements the dladdr() function which lets the caller look up the symbol name, symbol address as well as library name and library base address for an arbitrary address. 2021-06-06 17:40:11 +02:00			`typedef struct __Dl_info {`
Everywhere: Run clang-format 2022-04-01 20:58:27 +03:00			`char const* dli_fname;`
LibC+LibELF: Implement dladdr() This implements the dladdr() function which lets the caller look up the symbol name, symbol address as well as library name and library base address for an arbitrary address. 2021-06-06 17:40:11 +02:00			`void* dli_fbase;`
Everywhere: Run clang-format 2022-04-01 20:58:27 +03:00			`char const* dli_sname;`
LibC+LibELF: Implement dladdr() This implements the dladdr() function which lets the caller look up the symbol name, symbol address as well as library name and library base address for an arbitrary address. 2021-06-06 17:40:11 +02:00			`void* dli_saddr;`
			`} Dl_info;`

LibC: Stub out dlfcn 2019-05-23 15:32:30 +02:00			`int dlclose(void*);`
LibC+LibDl: Declare functions taking no arguments as taking void In C++, a function declaration with an empty parameter list means that the function takes no arguments. In C, however, it means that the function takes an unspecified number of parameters. What we did previously was therefore non-conforming. This caused a config check to fail in the curl port, as it was able to redeclare `rand` as taking an int parameter. 2022-01-08 15:32:59 +01:00			`char* dlerror(void);`
Everywhere: Run clang-format 2022-04-01 20:58:27 +03:00			`void* dlopen(char const*, int);`
			`void* dlsym(void, char const);`
Userland: Fix wrong signature of `dladdr` This function is supposed to take a `const void addr` as first parameter, but we took a `void addr`. https://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/baselib-dladdr-3.html 2023-05-03 11:49:31 +02:00			`int dladdr(void const, Dl_info);`
LibC: Make dlfcn stubs extern "C" like the outside world expects. 2019-05-28 14:30:55 +02:00
			`__END_DECLS`