Files
systemd/src/shared/main-func.h
Daan De Meyer f102bc3e5f tree-wide: Introduce sd-forward.h and shared-forward.h headers
Let's not leak details from src/shared and src/libsystemd into
src/basic, even though you can't actually do anything useful with
just forward declarations from src/shared.

The sd-forward.h header is put in src/libsystemd/sd-common as we
don't have a directory for shared internal headers for libsystemd
yet.

Let's also rename forward.h to basic-forward.h to keep things
self-explanatory.
2025-10-16 17:00:29 +02:00

37 lines
1.6 KiB
C

/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include "shared-forward.h"
#include "static-destruct.h"
void main_prepare(int argc, char *argv[]);
void main_finalize(int r, int exit_status);
#define _DEFINE_MAIN_FUNCTION(intro, impl, result_to_exit_status) \
int main(int argc, char *argv[]) { \
int r, s; \
main_prepare(argc, argv); \
intro; \
r = impl; \
s = result_to_exit_status(r); \
main_finalize(r, s); \
static_destruct(); \
return s; \
}
int exit_failure_if_negative(int result) _const_;
/* Negative return values from impl are mapped to EXIT_FAILURE, and
* everything else means success! */
#define DEFINE_MAIN_FUNCTION(impl) \
_DEFINE_MAIN_FUNCTION(, impl(argc, argv), exit_failure_if_negative)
int exit_failure_if_nonzero(int result) _const_;
/* Zero is mapped to EXIT_SUCCESS, negative values are mapped to EXIT_FAILURE,
* and positive values are propagated.
* Note: "true" means failure! */
#define DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(impl) \
_DEFINE_MAIN_FUNCTION(, impl(argc, argv), exit_failure_if_nonzero)