123 lines
4.2 KiB
C
123 lines
4.2 KiB
C
/****************************************************************************
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* libs/libc/string/lib_strsignal.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifdef CONFIG_LIBC_STRSIGNAL_SHORT
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# define CASE_SIG_STR(sig, msg) \
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case (sig): \
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return (FAR char *)#sig
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#else
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# define CASE_SIG_STR(sig, msg) \
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case (sig): \
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return (FAR char *)(msg)
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: strsignal
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*
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* Description:
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* The strsignal() function will map the signal number in signum to an
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* implementation-defined string and will return a pointer to it.
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*
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****************************************************************************/
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FAR char *strsignal(int signum)
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{
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static char sigstr[32];
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/* Handle invalid signals */
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if (!GOOD_SIGNO(signum))
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{
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return (FAR char *)"Invalid Signal";
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}
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/* Handle named signals */
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switch (signum)
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{
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#ifdef CONFIG_LIBC_STRSIGNAL
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/* Standard signals */
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CASE_SIG_STR(SIGHUP, "Hangup");
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CASE_SIG_STR(SIGINT, "Interrupt");
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CASE_SIG_STR(SIGQUIT, "Quit");
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CASE_SIG_STR(SIGILL, "Illegal instruction");
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CASE_SIG_STR(SIGTRAP, "Trace/breakpoint trap");
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CASE_SIG_STR(SIGABRT, "Aborted");
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CASE_SIG_STR(SIGBUS, "Bus error");
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CASE_SIG_STR(SIGFPE, "Arithmetic exception");
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CASE_SIG_STR(SIGKILL, "Killed");
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CASE_SIG_STR(SIGUSR1, "User defined signal 1");
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CASE_SIG_STR(SIGSEGV, "Invalid memory reference");
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CASE_SIG_STR(SIGUSR2, "User defined signal 2");
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CASE_SIG_STR(SIGPIPE, "Broken pipe");
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CASE_SIG_STR(SIGALRM, "Alarm clock");
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CASE_SIG_STR(SIGTERM, "Terminated");
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CASE_SIG_STR(SIGCHLD, "Child status changed");
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CASE_SIG_STR(SIGCONT, "Continued");
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CASE_SIG_STR(SIGSTOP, "Stopped (signal)");
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CASE_SIG_STR(SIGTSTP, "Stopped");
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CASE_SIG_STR(SIGTTIN, "Stopped (tty input)");
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CASE_SIG_STR(SIGTTOU, "Stopped (tty output)");
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CASE_SIG_STR(SIGURG, "Urgent I/O condition");
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CASE_SIG_STR(SIGXCPU, "CPU time limit exceeded");
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CASE_SIG_STR(SIGXFSZ, "File size limit exceeded");
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CASE_SIG_STR(SIGVTALRM, "Virtual timer expired");
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CASE_SIG_STR(SIGPROF, "Profiling timer expired");
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CASE_SIG_STR(SIGPOLL, "Pollable event occurred");
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CASE_SIG_STR(SIGSYS, "Bad system call");
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#endif /* CONFIG_LIBC_STRSIGNAL */
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default:
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if (signum >= SIGRTMIN && signum <= SIGRTMAX)
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{
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snprintf(sigstr, sizeof(sigstr), "Real-time Signal %d",
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signum - SIGRTMIN);
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}
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else
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{
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snprintf(sigstr, sizeof(sigstr), "Signal %d", signum);
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}
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break;
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}
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/* Return a string devoid is meaning */
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return sigstr;
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}
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