Initial revision

1 files changed, 268 insertions, 0 deletions

diff --git a/signame.c b/signame.c
new file mode 100644
index 0000000..72435c6
--- /dev/null
+++ b/signame.c
@@ -0,0 +1,268 @@
+/* Convert between signal names and numbers.
+   Copyright (C) 1990, 1992, 1993 Free Software Foundation, Inc.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+#include <sys/types.h>		/* Some systems need this for <signal.h>.  */
+#include <signal.h>
+
+#ifdef	HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* Some systems do not define NSIG in <signal.h>.  */
+#ifndef	NSIG
+#ifdef	_NSIG
+#define	NSIG	_NSIG
+#else
+#define	NSIG	32
+#endif
+#endif
+
+#if !__STDC__
+#define const
+#endif
+
+#include "signame.h"
+
+#ifndef HAVE_SYS_SIGLIST
+/* There is too much variation in Sys V signal numbers and names, so
+   we must initialize them at runtime.  */
+
+static const char undoc[] = "unknown signal";
+
+const char *sys_siglist[NSIG];
+#endif /* !HAVE_SYS_SIGLIST */
+
+/* Table of abbreviations for signals.  Note:  A given number can
+   appear more than once with different abbreviations.  */
+typedef struct
+  {
+    int number;
+    const char *abbrev;
+  } num_abbrev;
+static num_abbrev sig_table[NSIG*2];
+/* Number of elements of sig_table used.  */
+static int sig_table_nelts = 0;
+
+/* Enter signal number NUMBER into the tables with ABBREV and NAME.  */
+
+static void
+init_sig (number, abbrev, name)
+     int number;
+     const char *abbrev;
+     const char *name;
+{
+#ifndef HAVE_SYS_SIGLIST
+  sys_siglist[number] = name;
+#endif
+  sig_table[sig_table_nelts].number = number;
+  sig_table[sig_table_nelts++].abbrev = abbrev;
+}
+
+void
+signame_init ()
+{
+#ifndef HAVE_SYS_SIGLIST
+  int i;
+  /* Initialize signal names.  */
+  for (i = 0; i < NSIG; i++)
+    sys_siglist[i] = undoc;
+#endif /* !HAVE_SYS_SIGLIST */
+
+  /* Initialize signal names.  */
+#if defined (SIGHUP)
+  init_sig (SIGHUP, "HUP", "Hangup");
+#endif
+#if defined (SIGINT)
+  init_sig (SIGINT, "INT", "Interrupt");
+#endif
+#if defined (SIGQUIT)
+  init_sig (SIGQUIT, "QUIT", "Quit");
+#endif
+#if defined (SIGILL)
+  init_sig (SIGILL, "ILL", "Illegal Instruction");
+#endif
+#if defined (SIGTRAP)
+  init_sig (SIGTRAP, "TRAP", "Trace/breakpoint trap");
+#endif
+  /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
+     SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't.  */
+#if defined (SIGABRT)
+  init_sig (SIGABRT, "ABRT", "Aborted");
+#endif
+#if defined (SIGIOT)
+  init_sig (SIGIOT, "IOT", "IOT trap");
+#endif
+#if defined (SIGEMT)
+  init_sig (SIGEMT, "EMT", "EMT trap");
+#endif
+#if defined (SIGFPE)
+  init_sig (SIGFPE, "FPE", "Floating point exception");
+#endif
+#if defined (SIGKILL)
+  init_sig (SIGKILL, "KILL", "Killed");
+#endif
+#if defined (SIGBUS)
+  init_sig (SIGBUS, "BUS", "Bus error");
+#endif
+#if defined (SIGSEGV)
+  init_sig (SIGSEGV, "SEGV", "Segmentation fault");
+#endif
+#if defined (SIGSYS)
+  init_sig (SIGSYS, "SYS", "Bad system call");
+#endif
+#if defined (SIGPIPE)
+  init_sig (SIGPIPE, "PIPE", "Broken pipe");
+#endif
+#if defined (SIGALRM)
+  init_sig (SIGALRM, "ALRM", "Alarm clock");
+#endif
+#if defined (SIGTERM)
+  init_sig (SIGTERM, "TERM", "Terminated");
+#endif
+#if defined (SIGUSR1)
+  init_sig (SIGUSR1, "USR1", "User defined signal 1");
+#endif
+#if defined (SIGUSR2)
+  init_sig (SIGUSR2, "USR2", "User defined signal 2");
+#endif
+  /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
+     is what is in POSIX.1.  */
+#if defined (SIGCHLD)
+  init_sig (SIGCHLD, "CHLD", "Child exited");
+#endif
+#if defined (SIGCLD)
+  init_sig (SIGCLD, "CLD", "Child exited");
+#endif
+#if defined (SIGPWR)
+  init_sig (SIGPWR, "PWR", "Power failure");
+#endif
+#if defined (SIGTSTP)
+  init_sig (SIGTSTP, "TSTP", "Stopped");
+#endif
+#if defined (SIGTTIN)
+  init_sig (SIGTTIN, "TTIN", "Stopped (tty input)");
+#endif
+#if defined (SIGTTOU)
+  init_sig (SIGTTOU, "TTOU", "Stopped (tty output)");
+#endif
+#if defined (SIGSTOP)
+  init_sig (SIGSTOP, "STOP", "Stopped (signal)");
+#endif
+#if defined (SIGXCPU)
+  init_sig (SIGXCPU, "XCPU", "CPU time limit exceeded");
+#endif
+#if defined (SIGXFSZ)
+  init_sig (SIGXFSZ, "XFSZ", "File size limit exceeded");
+#endif
+#if defined (SIGVTALRM)
+  init_sig (SIGVTALRM, "VTALRM", "Virtual timer expired");
+#endif
+#if defined (SIGPROF)
+  init_sig (SIGPROF, "PROF", "Profiling timer expired");
+#endif
+#if defined (SIGWINCH)
+  /* "Window size changed" might be more accurate, but even if that
+     is all that it means now, perhaps in the future it will be
+     extended to cover other kinds of window changes.  */
+  init_sig (SIGWINCH, "WINCH", "Window changed");
+#endif
+#if defined (SIGCONT)
+  init_sig (SIGCONT, "CONT", "Continued");
+#endif
+#if defined (SIGURG)
+  init_sig (SIGURG, "URG", "Urgent I/O condition");
+#endif
+#if defined (SIGIO)
+  /* "I/O pending" has also been suggested.  A disadvantage is
+     that signal only happens when the process has
+     asked for it, not everytime I/O is pending.  Another disadvantage
+     is the confusion from giving it a different name than under Unix.  */
+  init_sig (SIGIO, "IO", "I/O possible");
+#endif
+#if defined (SIGWIND)
+  init_sig (SIGWIND, "WIND", "SIGWIND");
+#endif
+#if defined (SIGPHONE)
+  init_sig (SIGPHONE, "PHONE", "SIGPHONE");
+#endif
+#if defined (SIGPOLL)
+  init_sig (SIGPOLL, "POLL", "I/O possible");
+#endif
+#if defined (SIGLOST)
+  init_sig (SIGLOST, "LOST", "Resource lost");
+#endif
+#if defined (SIGDANGER)
+  init_sig (SIGDANGER, "DANGER", "Danger signal");
+#endif
+}
+
+/* Return the abbreviation for signal NUMBER.  */
+
+char *
+sig_abbrev (number)
+     int number;
+{
+  int i;
+
+  if (sig_table_nelts == 0)
+    signame_init ();
+  
+  for (i = 0; i < sig_table_nelts; i++)
+    if (sig_table[i].number == number)
+      return (char *)sig_table[i].abbrev;
+  return NULL;
+}
+
+/* Return the signal number for an ABBREV, or -1 if there is no
+   signal by that name.  */
+
+int
+sig_number (abbrev)
+     const char *abbrev;
+{
+  int i;
+
+  if (sig_table_nelts == 0)
+    signame_init ();
+
+  /* Skip over "SIG" if present.  */
+  if (abbrev[0] == 'S' && abbrev[1] == 'I' && abbrev[2] == 'G')
+    abbrev += 3;
+
+  for (i = 0; i < sig_table_nelts; i++)
+    if (abbrev[0] == sig_table[i].abbrev[0]
+	&& strcmp (abbrev, sig_table[i].abbrev) == 0)
+      return sig_table[i].number;
+  return -1;
+}
+
+#ifndef HAVE_PSIGNAL
+/* Print to standard error the name of SIGNAL, preceded by MESSAGE and
+   a colon, and followed by a newline.  */
+
+void
+psignal (signal, message)
+     int signal;
+     const char *message;
+{
+  if (signal <= 0 || signal >= NSIG)
+    fprintf (stderr, "%s: unknown signal", message);
+  else
+    fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]);
+}
+#endif