1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
#pragma once
/***
This file is part of systemd.
Copyright 2013 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdbool.h>
#include <systemd/sd-bus.h>
#include "basic/macro.h"
bool bus_error_is_dirty(sd_bus_error *e);
const char *bus_error_message(const sd_bus_error *e, int error);
int bus_error_setfv(sd_bus_error *e, const char *name, const char *format, va_list ap) _printf_(3,0);
int bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) _printf_(3,0);
#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.
*/
#define BUS_ERROR_MAP_ELF_REGISTER \
__attribute__ ((__section__("BUS_ERROR_MAP"))) \
__attribute__ ((__used__)) \
__attribute__ ((aligned(8)))
#define BUS_ERROR_MAP_ELF_USE(errors) \
extern const sd_bus_error_map errors[]; \
__attribute__ ((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);
|