1 | /* Copyright (C) 1991-2024 Free Software Foundation, Inc. |
---|---|
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <signal.h> |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <string.h> |
22 | #include <libintl.h> |
23 | #include <tls-internal.h> |
24 | #include <libc-internal.h> |
25 | |
26 | /* Return a string describing the meaning of the signal number SIGNUM. */ |
27 | char * |
28 | strsignal (int signum) |
29 | { |
30 | const char *desc = __sigdescr_np (signum); |
31 | if (desc != NULL) |
32 | return _(desc); |
33 | |
34 | if (__libc_initial) |
35 | { |
36 | struct tls_internal_t *tls_internal = __glibc_tls_internal (); |
37 | free (ptr: tls_internal->strsignal_buf); |
38 | |
39 | int r; |
40 | #ifdef SIGRTMIN |
41 | if (signum >= SIGRTMIN && signum <= SIGRTMAX) |
42 | r = __asprintf (&tls_internal->strsignal_buf, _("Real-time signal %d"), |
43 | signum - SIGRTMIN); |
44 | else |
45 | #endif |
46 | r = __asprintf (&tls_internal->strsignal_buf, _("Unknown signal %d"), |
47 | signum); |
48 | |
49 | if (r >= 0) |
50 | return tls_internal->strsignal_buf; |
51 | else |
52 | tls_internal->strsignal_buf = NULL; |
53 | } |
54 | /* Fall through on asprintf error, and for !__libc_initial: |
55 | secondary namespaces use a different malloc and cannot |
56 | participate in the buffer management. */ |
57 | return _("Unknown signal"); |
58 | } |
59 |