1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 This file is part of systemd.
7 Copyright 2013 Lennart Poettering
16 bool bus_error_is_dirty(sd_bus_error *e);
18 const char *bus_error_message(const sd_bus_error *e, int error);
20 int bus_error_setfv(sd_bus_error *e, const char *name, const char *format, va_list ap) _printf_(3,0);
21 int bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) _printf_(3,0);
23 #define BUS_ERROR_OOM SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_MEMORY, "Out of memory")
24 #define BUS_ERROR_FAILED SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FAILED, "Operation failed")
27 * There are two ways to register error maps with the error translation
28 * logic: by using BUS_ERROR_MAP_ELF_REGISTER, which however only
29 * works when linked into the same ELF module, or via
30 * sd_bus_error_add_map() which is the official, external API, that
31 * works from any module.
33 * Note that BUS_ERROR_MAP_ELF_REGISTER has to be used as decorator in
34 * the bus error table, and BUS_ERROR_MAP_ELF_USE has to be used at
35 * least once per compilation unit (i.e. per library), to ensure that
36 * the error map is really added to the final binary.
39 #define BUS_ERROR_MAP_ELF_REGISTER \
40 __attribute__ ((__section__("BUS_ERROR_MAP"))) \
41 __attribute__ ((__used__)) \
42 __attribute__ ((aligned(8)))
44 #define BUS_ERROR_MAP_ELF_USE(errors) \
45 extern const sd_bus_error_map errors[]; \
46 __attribute__ ((used)) static const sd_bus_error_map * const CONCATENATE(errors ## _copy_, __COUNTER__) = errors;
48 /* We use something exotic as end marker, to ensure people build the
49 * maps using the macsd-ros. */
50 #define BUS_ERROR_MAP_END_MARKER -'x'
52 BUS_ERROR_MAP_ELF_USE(bus_standard_errors);