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52ad194e | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
663996b3 MS |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
60f067b4 | 5 | Copyright 2013 Lennart Poettering |
663996b3 MS |
6 | |
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
663996b3 MS |
21 | #include <string.h> |
22 | ||
60f067b4 | 23 | #include "errno-list.h" |
4c89c718 | 24 | #include "macro.h" |
663996b3 | 25 | |
60f067b4 | 26 | static const struct errno_name* lookup_errno(register const char *str, |
2897b343 | 27 | register GPERF_LEN_TYPE len); |
663996b3 | 28 | |
60f067b4 | 29 | #include "errno-from-name.h" |
db2df898 | 30 | #include "errno-to-name.h" |
60f067b4 JS |
31 | |
32 | const char *errno_to_name(int id) { | |
33 | ||
34 | if (id < 0) | |
35 | id = -id; | |
663996b3 | 36 | |
60f067b4 | 37 | if (id >= (int) ELEMENTSOF(errno_names)) |
663996b3 MS |
38 | return NULL; |
39 | ||
60f067b4 | 40 | return errno_names[id]; |
663996b3 MS |
41 | } |
42 | ||
60f067b4 JS |
43 | int errno_from_name(const char *name) { |
44 | const struct errno_name *sc; | |
663996b3 MS |
45 | |
46 | assert(name); | |
47 | ||
60f067b4 | 48 | sc = lookup_errno(name, strlen(name)); |
663996b3 | 49 | if (!sc) |
4c89c718 | 50 | return -EINVAL; |
663996b3 | 51 | |
4c89c718 | 52 | assert(sc->id > 0); |
663996b3 MS |
53 | return sc->id; |
54 | } |