gnu/make/signame.c

   1 /* Convert between signal names and numbers.
   2 Copyright (C) 1990,92,93,95,96,99, 2002 Free Software Foundation, Inc.
   3 This file was part of the GNU C Library, but is now part of GNU make.
   4
   5 GNU Make is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2, or (at your option)
   8 any later version.
   9
  10 GNU Make is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with GNU Make; see the file COPYING.  If not, write to
  17 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18 Boston, MA 02111-1307, USA.  */
  19
  20 #include "make.h"
  21
  22 /* If the system provides strsignal, we don't need it. */
  23
  24 #if !defined(HAVE_STRSIGNAL)
  25
  26 /* If the system provides sys_siglist, we'll use that.
  27    Otherwise create our own.
  28  */
  29
  30 #if !defined(SYS_SIGLIST_DECLARED)
  31
  32 /* Some systems do not define NSIG in <signal.h>.  */
  33 #ifndef NSIG
  34 #ifdef  _NSIG
  35 #define NSIG    _NSIG
  36 #else
  37 #define NSIG    32
  38 #endif
  39 #endif
  40
  41 /* There is too much variation in Sys V signal numbers and names, so
  42    we must initialize them at runtime.  */
  43
  44 static const char *undoc;
  45
  46  /* orig andy static  char *sys_siglist[NSIG]; */
  47 static  const char * sys_siglist[NSIG];
  48
  49
  50 /* Table of abbreviations for signals.  Note:  A given number can
  51    appear more than once with different abbreviations.  */
  52 #define SIG_TABLE_SIZE  (NSIG*2)
  53
  54 typedef struct
  55   {
  56     int number;
  57     const char *abbrev;
  58   } num_abbrev;
  59
  60 static num_abbrev sig_table[SIG_TABLE_SIZE];
  61
  62 /* Number of elements of sig_table used.  */
  63 static int sig_table_nelts = 0;
  64
  65 /* Enter signal number NUMBER into the tables with ABBREV and NAME.  */
  66
  67 static void
  68 init_sig (int number, const char *abbrev, const char *name)
  69 {
  70   /* If this value is ever greater than NSIG it seems like it'd be a bug in
  71      the system headers, but... better safe than sorry.  We know, for
  72      example, that this isn't always true on VMS.  */
  73
  74   if (number >= 0 && number < NSIG)
  75     sys_siglist[number] = name;
  76
  77   if (sig_table_nelts < SIG_TABLE_SIZE)
  78     {
  79       sig_table[sig_table_nelts].number = number;
  80       sig_table[sig_table_nelts++].abbrev = abbrev;
  81     }
  82 }
  83
  84 static int
  85 signame_init (void)
  86 {
  87   int i;
  88
  89   undoc = xstrdup (_("unknown signal"));
  90
  91   /* Initialize signal names.  */
  92   for (i = 0; i < NSIG; i++)
  93     sys_siglist[i] = undoc;
  94
  95   /* Initialize signal names.  */
  96 #if defined (SIGHUP)
  97   init_sig (SIGHUP, "HUP", _("Hangup"));
  98 #endif
  99 #if defined (SIGINT)
 100   init_sig (SIGINT, "INT", _("Interrupt"));
 101 #endif
 102 #if defined (SIGQUIT)
 103   init_sig (SIGQUIT, "QUIT", _("Quit"));
 104 #endif
 105 #if defined (SIGILL)
 106   init_sig (SIGILL, "ILL", _("Illegal Instruction"));
 107 #endif
 108 #if defined (SIGTRAP)
 109   init_sig (SIGTRAP, "TRAP", _("Trace/breakpoint trap"));
 110 #endif
 111   /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
 112      SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't.  */
 113 #if defined (SIGABRT)
 114   init_sig (SIGABRT, "ABRT", _("Aborted"));
 115 #endif
 116 #if defined (SIGIOT)
 117   init_sig (SIGIOT, "IOT", _("IOT trap"));
 118 #endif
 119 #if defined (SIGEMT)
 120   init_sig (SIGEMT, "EMT", _("EMT trap"));
 121 #endif
 122 #if defined (SIGFPE)
 123   init_sig (SIGFPE, "FPE", _("Floating point exception"));
 124 #endif
 125 #if defined (SIGKILL)
 126   init_sig (SIGKILL, "KILL", _("Killed"));
 127 #endif
 128 #if defined (SIGBUS)
 129   init_sig (SIGBUS, "BUS", _("Bus error"));
 130 #endif
 131 #if defined (SIGSEGV)
 132   init_sig (SIGSEGV, "SEGV", _("Segmentation fault"));
 133 #endif
 134 #if defined (SIGSYS)
 135   init_sig (SIGSYS, "SYS", _("Bad system call"));
 136 #endif
 137 #if defined (SIGPIPE)
 138   init_sig (SIGPIPE, "PIPE", _("Broken pipe"));
 139 #endif
 140 #if defined (SIGALRM)
 141   init_sig (SIGALRM, "ALRM", _("Alarm clock"));
 142 #endif
 143 #if defined (SIGTERM)
 144   init_sig (SIGTERM, "TERM", _("Terminated"));
 145 #endif
 146 #if defined (SIGUSR1)
 147   init_sig (SIGUSR1, "USR1", _("User defined signal 1"));
 148 #endif
 149 #if defined (SIGUSR2)
 150   init_sig (SIGUSR2, "USR2", _("User defined signal 2"));
 151 #endif
 152   /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
 153      is what is in POSIX.1.  */
 154 #if defined (SIGCHLD)
 155   init_sig (SIGCHLD, "CHLD", _("Child exited"));
 156 #endif
 157 #if defined (SIGCLD)
 158   init_sig (SIGCLD, "CLD", _("Child exited"));
 159 #endif
 160 #if defined (SIGPWR)
 161   init_sig (SIGPWR, "PWR", _("Power failure"));
 162 #endif
 163 #if defined (SIGTSTP)
 164   init_sig (SIGTSTP, "TSTP", _("Stopped"));
 165 #endif
 166 #if defined (SIGTTIN)
 167   init_sig (SIGTTIN, "TTIN", _("Stopped (tty input)"));
 168 #endif
 169 #if defined (SIGTTOU)
 170   init_sig (SIGTTOU, "TTOU", _("Stopped (tty output)"));
 171 #endif
 172 #if defined (SIGSTOP)
 173   init_sig (SIGSTOP, "STOP", _("Stopped (signal)"));
 174 #endif
 175 #if defined (SIGXCPU)
 176   init_sig (SIGXCPU, "XCPU", _("CPU time limit exceeded"));
 177 #endif
 178 #if defined (SIGXFSZ)
 179   init_sig (SIGXFSZ, "XFSZ", _("File size limit exceeded"));
 180 #endif
 181 #if defined (SIGVTALRM)
 182   init_sig (SIGVTALRM, "VTALRM", _("Virtual timer expired"));
 183 #endif
 184 #if defined (SIGPROF)
 185   init_sig (SIGPROF, "PROF", _("Profiling timer expired"));
 186 #endif
 187 #if defined (SIGWINCH)
 188   /* "Window size changed" might be more accurate, but even if that
 189      is all that it means now, perhaps in the future it will be
 190      extended to cover other kinds of window changes.  */
 191   init_sig (SIGWINCH, "WINCH", _("Window changed"));
 192 #endif
 193 #if defined (SIGCONT)
 194   init_sig (SIGCONT, "CONT", _("Continued"));
 195 #endif
 196 #if defined (SIGURG)
 197   init_sig (SIGURG, "URG", _("Urgent I/O condition"));
 198 #endif
 199 #if defined (SIGIO)
 200   /* "I/O pending" has also been suggested.  A disadvantage is
 201      that signal only happens when the process has
 202      asked for it, not everytime I/O is pending.  Another disadvantage
 203      is the confusion from giving it a different name than under Unix.  */
 204   init_sig (SIGIO, "IO", _("I/O possible"));
 205 #endif
 206 #if defined (SIGWIND)
 207   init_sig (SIGWIND, "WIND", _("SIGWIND"));
 208 #endif
 209 #if defined (SIGPHONE)
 210   init_sig (SIGPHONE, "PHONE", _("SIGPHONE"));
 211 #endif
 212 #if defined (SIGPOLL)
 213   init_sig (SIGPOLL, "POLL", _("I/O possible"));
 214 #endif
 215 #if defined (SIGLOST)
 216   init_sig (SIGLOST, "LOST", _("Resource lost"));
 217 #endif
 218 #if defined (SIGDANGER)
 219   init_sig (SIGDANGER, "DANGER", _("Danger signal"));
 220 #endif
 221 #if defined (SIGINFO)
 222   init_sig (SIGINFO, "INFO", _("Information request"));
 223 #endif
 224 #if defined (SIGNOFP)
 225   init_sig (SIGNOFP, "NOFP", _("Floating point co-processor not available"));
 226 #endif
 227
 228   return 1;
 229 }
 230
 231 #endif  /* SYS_SIGLIST_DECLARED */
 232
 233
 234 char *
 235 strsignal (int signal)
 236 {
 237   static char buf[] = "Signal 12345678901234567890";
 238
 239 #if !defined(SYS_SIGLIST_DECLARED)
 240   static char sig_initted = 0;
 241
 242   if (!sig_initted)
 243     sig_initted = signame_init ();
 244 #endif
 245
 246   if (signal > 0 || signal < NSIG)
 247     return (char *) sys_siglist[signal];
 248
 249   sprintf (buf, "Signal %d", signal);
 250   return buf;
 251 }
 252
 253 #endif  /* HAVE_STRSIGNAL */