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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <stdbool.h>
#include "sd-bus.h"
#include "errno-util.h"
#include "macro.h"
bool bus_error_is_dirty(sd_bus_error *e);
const char* _bus_error_message(const sd_bus_error *e, int error, char buf[static ERRNO_BUF_LEN]);
/* Note: the lifetime of the compound literal is the immediately surrounding block,
* see C11 §6.5.2.5, and
* https://stackoverflow.com/questions/34880638/compound-literal-lifetime-and-if-blocks */
#define bus_error_message(e, error) _bus_error_message(e, error, (char[ERRNO_BUF_LEN]){})
#define BUS_ERROR_OOM SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_MEMORY, "Out of memory")
#define BUS_ERROR_FAILED SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FAILED, "Operation failed")
/*
* There are two ways to register error maps with the error translation
* logic: by using BUS_ERROR_MAP_ELF_REGISTER, which however only
* works when linked into the same ELF module, or via
* sd_bus_error_add_map() which is the official, external API, that
* works from any module.
*
* Note that BUS_ERROR_MAP_ELF_REGISTER has to be used as decorator in
* the bus error table, and BUS_ERROR_MAP_ELF_USE has to be used at
* least once per compilation unit (i.e. per library), to ensure that
* the error map is really added to the final binary.
*
* In addition, set the retain attribute so that the section cannot be
* discarded by ld --gc-sections -z start-stop-gc. Older compilers would
* warn for the unknown attribute, so just disable -Wattributes.
*/
#define BUS_ERROR_MAP_ELF_REGISTER \
_Pragma("GCC diagnostic ignored \"-Wattributes\"") \
_section_("SYSTEMD_BUS_ERROR_MAP") \
_used_ \
_retain_ \
_alignptr_ \
_variable_no_sanitize_address_
#define BUS_ERROR_MAP_ELF_USE(errors) \
extern const sd_bus_error_map errors[]; \
_used_ \
static const sd_bus_error_map * const CONCATENATE(errors ## _copy_, __COUNTER__) = errors;
/* We use something exotic as end marker, to ensure people build the
* maps using the macsd-ros. */
#define BUS_ERROR_MAP_END_MARKER -'x'
BUS_ERROR_MAP_ELF_USE(bus_standard_errors);
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