1 /* Copyright (C) 1991-2022 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 25 /* Return a string describing the meaning of the signal number SIGNUM. */ 26 char * strsignal(int signum)27strsignal (int signum) 28 { 29 const char *desc = __sigdescr_np (signum); 30 if (desc != NULL) 31 return _(desc); 32 33 struct tls_internal_t *tls_internal = __glibc_tls_internal (); 34 free (tls_internal->strsignal_buf); 35 36 int r; 37 #ifdef SIGRTMIN 38 if (signum >= SIGRTMIN && signum <= SIGRTMAX) 39 r = __asprintf (&tls_internal->strsignal_buf, _("Real-time signal %d"), 40 signum - SIGRTMIN); 41 else 42 #endif 43 r = __asprintf (&tls_internal->strsignal_buf, _("Unknown signal %d"), 44 signum); 45 46 if (r == -1) 47 tls_internal->strsignal_buf = NULL; 48 49 return tls_internal->strsignal_buf; 50 } 51