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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <string.h> | |
24 | ||
25 | #include "util.h" | |
26 | #include "errno-list.h" | |
27 | ||
28 | static const struct errno_name* lookup_errno(register const char *str, | |
29 | register unsigned int len); | |
30 | ||
31 | #include "errno-to-name.h" | |
32 | #include "errno-from-name.h" | |
33 | ||
34 | const char *errno_to_name(int id) { | |
35 | ||
36 | if (id < 0) | |
37 | id = -id; | |
38 | ||
39 | if (id >= (int) ELEMENTSOF(errno_names)) | |
40 | return NULL; | |
41 | ||
42 | return errno_names[id]; | |
43 | } | |
44 | ||
45 | int errno_from_name(const char *name) { | |
46 | const struct errno_name *sc; | |
47 | ||
48 | assert(name); | |
49 | ||
50 | sc = lookup_errno(name, strlen(name)); | |
51 | if (!sc) | |
52 | return 0; | |
53 | ||
54 | return sc->id; | |
55 | } | |
56 | ||
57 | int errno_max(void) { | |
58 | return ELEMENTSOF(errno_names); | |
59 | } |