newlib/libc/string/strsignal.c

   1 /*
   2 FUNCTION
   3         <<strsignal>>---convert signal number to string
   4
   5 INDEX
   6         strsignal
   7
   8 SYNOPSIS
   9         #include <string.h>
  10         char *strsignal(int <[signal]>);
  11
  12 DESCRIPTION
  13 <<strsignal>> converts the signal number <[signal]> into a
  14 string.  If <[signal]> is not a known signal number, the result
  15 will be of the form "Unknown signal NN" where NN is the <[signal]>
  16 is a decimal number.
  17
  18 RETURNS
  19 This function returns a pointer to a string.  Your application must
  20 not modify that string.
  21
  22 PORTABILITY
  23 POSIX.1-2008 C requires <<strsignal>>, but does not specify the strings used
  24 for each signal number.
  25
  26 <<strsignal>> requires no supporting OS subroutines.
  27
  28 QUICKREF
  29         strsignal pure
  30 */
  31
  32 /*
  33  *  Written by Joel Sherrill <joel.sherrill@OARcorp.com>.
  34  *
  35  *  COPYRIGHT (c) 2010, 2017.
  36  *  On-Line Applications Research Corporation (OAR).
  37  *
  38  *  Permission to use, copy, modify, and distribute this software for any
  39  *  purpose without fee is hereby granted, provided that this entire notice
  40  *  is included in all copies of any software which is or includes a copy
  41  *  or modification of this software.
  42  *
  43  *  THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
  44  *  WARRANTY.  IN PARTICULAR,  THE AUTHOR MAKES NO REPRESENTATION
  45  *  OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS
  46  *  SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
  47  */
  48
  49 #include <string.h>
  50 #include <signal.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <reent.h>
  54
  55 #ifdef _REENT_THREAD_LOCAL
  56 _Thread_local char _tls_signal_buf[_REENT_SIGNAL_SIZE];
  57 #endif
  58
  59 char *
  60 strsignal (int signal)
  61 {
  62   char *buffer;
  63   struct _reent *ptr;
  64
  65   ptr = _REENT;
  66
  67   _REENT_CHECK_SIGNAL_BUF(ptr);
  68   buffer = _REENT_SIGNAL_BUF(ptr);
  69
  70 #if defined(SIGRTMIN) && defined(SIGRTMAX)
  71   if ((signal >= SIGRTMIN) && (signal <= SIGRTMAX)) {
  72     siprintf (buffer, "Real-time signal %d", signal - SIGRTMIN);
  73     return buffer;
  74   }
  75 #endif
  76
  77   switch (signal) {
  78 #ifdef SIGHUP
  79     case SIGHUP:
  80       buffer = "Hangup";
  81       break;
  82 #endif
  83 #ifdef SIGINT
  84     case SIGINT:
  85       buffer = "Interrupt";
  86       break;
  87 #endif
  88 #ifdef SIGQUIT
  89     case SIGQUIT:
  90       buffer = "Quit";
  91       break;
  92 #endif
  93 #ifdef SIGILL
  94     case SIGILL:
  95       buffer = "Illegal instruction";
  96       break;
  97 #endif
  98 #ifdef SIGTRAP
  99     case SIGTRAP:
 100       buffer = "Trace/breakpoint trap";
 101       break;
 102 #endif
 103 #ifdef SIGIOT
 104   #if  defined(SIGABRT) && (SIGIOT != SIGABRT)
 105     case SIGABRT:
 106   #endif
 107     case SIGIOT:
 108       buffer = "IOT trap";
 109       break;
 110 #endif
 111 #ifdef SIGEMT
 112     case SIGEMT:
 113       buffer = "EMT trap";
 114       break;
 115 #endif
 116 #ifdef SIGFPE
 117     case SIGFPE:
 118       buffer = "Floating point exception";
 119       break;
 120 #endif
 121 #ifdef SIGKILL
 122     case SIGKILL:
 123       buffer = "Killed";
 124       break;
 125 #endif
 126 #ifdef SIGBUS
 127     case SIGBUS:
 128       buffer = "Bus error";
 129       break;
 130 #endif
 131 #ifdef SIGSEGV
 132     case SIGSEGV:
 133       buffer = "Segmentation fault";
 134       break;
 135 #endif
 136 #ifdef SIGSYS
 137     case SIGSYS:
 138       buffer = "Bad system call";
 139       break;
 140 #endif
 141 #ifdef SIGPIPE
 142     case SIGPIPE:
 143       buffer = "Broken pipe";
 144       break;
 145 #endif
 146 #ifdef SIGALRM
 147     case SIGALRM:
 148       buffer = "Alarm clock";
 149       break;
 150 #endif
 151 #ifdef SIGTERM
 152     case SIGTERM:
 153       buffer = "Terminated";
 154       break;
 155 #endif
 156 #ifdef SIGURG
 157     case SIGURG:
 158       buffer = "Urgent I/O condition";
 159       break;
 160 #endif
 161 #ifdef SIGSTOP
 162     case SIGSTOP:
 163       buffer = "Stopped (signal)";
 164       break;
 165 #endif
 166 #ifdef SIGTSTP
 167     case SIGTSTP:
 168       buffer = "Stopped";
 169       break;
 170 #endif
 171 #ifdef SIGCONT
 172     case SIGCONT:
 173       buffer = "Continued";
 174       break;
 175 #endif
 176 #ifdef SIGCHLD
 177   #if  defined(SIGCLD) && (SIGCHLD != SIGCLD)
 178     case SIGCLD:
 179   #endif
 180     case SIGCHLD:
 181       buffer = "Child exited";
 182       break;
 183 #endif
 184 #ifdef SIGTTIN
 185     case SIGTTIN:
 186       buffer = "Stopped (tty input)";
 187       break;
 188 #endif
 189 #ifdef SIGTTOUT
 190     case SIGTTOUT:
 191       buffer = "Stopped (tty output)";
 192       break;
 193 #endif
 194 #ifdef SIGIO
 195   #if  defined(SIGPOLL) && (SIGIO != SIGPOLL)
 196     case SIGPOLL:
 197   #endif
 198     case SIGIO:
 199       buffer = "I/O possible";
 200       break;
 201 #endif
 202 #ifdef SIGWINCH
 203     case SIGWINCH:
 204       buffer = "Window changed";
 205       break;
 206 #endif
 207 #ifdef SIGUSR1
 208     case SIGUSR1:
 209       buffer = "User defined signal 1";
 210       break;
 211 #endif
 212 #ifdef SIGUSR2
 213     case SIGUSR2:
 214       buffer = "User defined signal 2";
 215       break;
 216 #endif
 217 #ifdef SIGPWR
 218     case SIGPWR:
 219       buffer = "Power Failure";
 220       break;
 221 #endif
 222 #ifdef SIGXCPU
 223     case SIGXCPU:
 224       buffer = "CPU time limit exceeded";
 225       break;
 226 #endif
 227 #ifdef SIGXFSZ
 228     case SIGXFSZ:
 229       buffer = "File size limit exceeded";
 230       break;
 231 #endif
 232 #ifdef SIGVTALRM
 233     case SIGVTALRM :
 234       buffer = "Virtual timer expired";
 235       break;
 236 #endif
 237 #ifdef SIGPROF
 238     case SIGPROF:
 239       buffer = "Profiling timer expired";
 240       break;
 241 #endif
 242 #if defined(SIGLOST) && SIGLOST != SIGPWR
 243     case SIGLOST:
 244       buffer = "Resource lost";
 245       break;
 246 #endif
 247     default:
 248       siprintf (buffer, "Unknown signal %d", signal);
 249       break;
 250   }
 251
 252   return buffer;
 253 }