| 1 | /* signames.c -- Create and write `signames.h', which contains an array of
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| 2 | signal names. */
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| 3 |
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| 4 | /* Copyright (C) 1992-2003 Free Software Foundation, Inc.
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| 5 |
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| 6 | This file is part of GNU Bash, the Bourne Again SHell.
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| 7 |
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| 8 | Bash is free software; you can redistribute it and/or modify it under
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| 9 | the terms of the GNU General Public License as published by the Free
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| 10 | Software Foundation; either version 2, or (at your option) any later
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| 11 | version.
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| 12 |
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| 13 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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| 14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 16 | for more details.
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| 17 |
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| 18 | You should have received a copy of the GNU General Public License along
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| 19 | with Bash; see the file COPYING. If not, write to the Free Software
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| 20 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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| 21 |
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| 22 | #include <config.h>
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| 23 |
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| 24 | #include <stdio.h>
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| 25 | #include <sys/types.h>
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| 26 | #include <signal.h>
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| 27 | #if defined (HAVE_STDLIB_H)
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| 28 | # include <stdlib.h>
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| 29 | #else
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| 30 | # include "ansi_stdlib.h"
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| 31 | #endif /* HAVE_STDLIB_H */
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| 32 |
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| 33 | #if !defined (NSIG)
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| 34 | # define NSIG 64
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| 35 | #endif
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| 36 |
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| 37 | /*
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| 38 | * Special traps:
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| 39 | * EXIT == 0
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| 40 | * DEBUG == NSIG
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| 41 | * ERR == NSIG+1
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| 42 | * RETURN == NSIG+2
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| 43 | */
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| 44 | #define LASTSIG NSIG+2
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| 45 |
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| 46 | char *signal_names[2 * (LASTSIG)];
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| 47 |
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| 48 | #define signal_names_size (sizeof(signal_names)/sizeof(signal_names[0]))
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| 49 |
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| 50 | char *progname;
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| 51 |
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| 52 | /* AIX 4.3 defines SIGRTMIN and SIGRTMAX as 888 and 999 respectively.
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| 53 | I don't want to allocate so much unused space for the intervening signal
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| 54 | numbers, so we just punt if SIGRTMAX is past the bounds of the
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| 55 | signal_names array (handled in configure). */
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| 56 | #if defined (SIGRTMAX) && defined (UNUSABLE_RT_SIGNALS)
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| 57 | # undef SIGRTMAX
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| 58 | # undef SIGRTMIN
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| 59 | #endif
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| 60 |
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| 61 | #if defined (SIGRTMAX) || defined (SIGRTMIN)
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| 62 | # define RTLEN 14
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| 63 | # define RTLIM 256
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| 64 | #endif
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| 65 |
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| 66 | void
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| 67 | initialize_signames ()
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| 68 | {
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| 69 | register int i;
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| 70 | #if defined (SIGRTMAX) || defined (SIGRTMIN)
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| 71 | int rtmin, rtmax, rtcnt;
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| 72 | #endif
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| 73 |
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| 74 | for (i = 1; i < signal_names_size; i++)
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| 75 | signal_names[i] = (char *)NULL;
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| 76 |
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| 77 | /* `signal' 0 is what we do on exit. */
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| 78 | signal_names[0] = "EXIT";
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| 79 |
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| 80 | /* Place signal names which can be aliases for more common signal
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| 81 | names first. This allows (for example) SIGABRT to overwrite SIGLOST. */
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| 82 |
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| 83 | /* POSIX 1003.1b-1993 real time signals, but take care of incomplete
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| 84 | implementations. Acoording to the standard, both, SIGRTMIN and
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| 85 | SIGRTMAX must be defined, SIGRTMIN must be stricly less than
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| 86 | SIGRTMAX, and the difference must be at least 7, that is, there
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| 87 | must be at least eight distinct real time signals. */
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| 88 |
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| 89 | /* The generated signal names are SIGRTMIN, SIGRTMIN+1, ...,
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| 90 | SIGRTMIN+x, SIGRTMAX-x, ..., SIGRTMAX-1, SIGRTMAX. If the number
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| 91 | of RT signals is odd, there is an extra SIGRTMIN+(x+1).
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| 92 | These names are the ones used by ksh and /usr/xpg4/bin/sh on SunOS5. */
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| 93 |
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| 94 | #if defined (SIGRTMIN)
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| 95 | rtmin = SIGRTMIN;
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| 96 | signal_names[rtmin] = "SIGRTMIN";
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| 97 | #endif
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| 98 |
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| 99 | #if defined (SIGRTMAX)
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| 100 | rtmax = SIGRTMAX;
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| 101 | signal_names[rtmax] = "SIGRTMAX";
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| 102 | #endif
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| 103 |
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| 104 | #if defined (SIGRTMAX) && defined (SIGRTMIN)
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| 105 | if (rtmax > rtmin)
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| 106 | {
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| 107 | rtcnt = (rtmax - rtmin - 1) / 2;
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| 108 | /* croak if there are too many RT signals */
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| 109 | if (rtcnt >= RTLIM/2)
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| 110 | {
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| 111 | rtcnt = RTLIM/2-1;
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| 112 | fprintf(stderr, "%s: error: more than %i real time signals, fix `%s'\n",
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| 113 | progname, RTLIM, progname);
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| 114 | }
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| 115 |
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| 116 | for (i = 1; i <= rtcnt; i++)
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| 117 | {
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| 118 | signal_names[rtmin+i] = (char *)malloc(RTLEN);
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| 119 | if (signal_names[rtmin+i])
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| 120 | sprintf (signal_names[rtmin+i], "SIGRTMIN+%d", i);
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| 121 | signal_names[rtmax-i] = (char *)malloc(RTLEN);
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| 122 | if (signal_names[rtmax-i])
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| 123 | sprintf (signal_names[rtmax-i], "SIGRTMAX-%d", i);
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| 124 | }
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| 125 |
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| 126 | if (rtcnt < RTLIM/2-1 && rtcnt != (rtmax-rtmin)/2)
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| 127 | {
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| 128 | /* Need an extra RTMIN signal */
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| 129 | signal_names[rtmin+rtcnt+1] = (char *)malloc(RTLEN);
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| 130 | if (signal_names[rtmin+rtcnt+1])
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| 131 | sprintf (signal_names[rtmin+rtcnt+1], "SIGRTMIN+%d", rtcnt+1);
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| 132 | }
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| 133 | }
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| 134 | #endif /* SIGRTMIN && SIGRTMAX */
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| 135 |
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| 136 | #if defined (SIGLOST) /* resource lost (eg, record-lock lost) */
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| 137 | signal_names[SIGLOST] = "SIGLOST";
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| 138 | #endif
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| 139 |
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| 140 | /* AIX */
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| 141 | #if defined (SIGMSG) /* HFT input data pending */
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| 142 | signal_names[SIGMSG] = "SIGMSG";
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| 143 | #endif
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| 144 |
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| 145 | #if defined (SIGDANGER) /* system crash imminent */
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| 146 | signal_names[SIGDANGER] = "SIGDANGER";
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| 147 | #endif
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| 148 |
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| 149 | #if defined (SIGMIGRATE) /* migrate process to another CPU */
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| 150 | signal_names[SIGMIGRATE] = "SIGMIGRATE";
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| 151 | #endif
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| 152 |
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| 153 | #if defined (SIGPRE) /* programming error */
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| 154 | signal_names[SIGPRE] = "SIGPRE";
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| 155 | #endif
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| 156 |
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| 157 | #if defined (SIGVIRT) /* AIX virtual time alarm */
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| 158 | signal_names[SIGVIRT] = "SIGVIRT";
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| 159 | #endif
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| 160 |
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| 161 | #if defined (SIGALRM1) /* m:n condition variables */
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| 162 | signal_names[SIGALRM1] = "SIGALRM1";
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| 163 | #endif
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| 164 |
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| 165 | #if defined (SIGWAITING) /* m:n scheduling */
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| 166 | signal_names[SIGWAITING] = "SIGWAITING";
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| 167 | #endif
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| 168 |
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| 169 | #if defined (SIGGRANT) /* HFT monitor mode granted */
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| 170 | signal_names[SIGGRANT] = "SIGGRANT";
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| 171 | #endif
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| 172 |
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| 173 | #if defined (SIGKAP) /* keep alive poll from native keyboard */
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| 174 | signal_names[SIGKAP] = "SIGKAP";
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| 175 | #endif
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| 176 |
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| 177 | #if defined (SIGRETRACT) /* HFT monitor mode retracted */
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| 178 | signal_names[SIGRETRACT] = "SIGRETRACT";
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| 179 | #endif
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| 180 |
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| 181 | #if defined (SIGSOUND) /* HFT sound sequence has completed */
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| 182 | signal_names[SIGSOUND] = "SIGSOUND";
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| 183 | #endif
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| 184 |
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| 185 | #if defined (SIGSAK) /* Secure Attention Key */
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| 186 | signal_names[SIGSAK] = "SIGSAK";
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| 187 | #endif
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| 188 |
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| 189 | /* SunOS5 */
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| 190 | #if defined (SIGLWP) /* special signal used by thread library */
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| 191 | signal_names[SIGLWP] = "SIGLWP";
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| 192 | #endif
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| 193 |
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| 194 | #if defined (SIGFREEZE) /* special signal used by CPR */
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| 195 | signal_names[SIGFREEZE] = "SIGFREEZE";
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| 196 | #endif
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| 197 |
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| 198 | #if defined (SIGTHAW) /* special signal used by CPR */
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| 199 | signal_names[SIGTHAW] = "SIGTHAW";
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| 200 | #endif
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| 201 |
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| 202 | #if defined (SIGCANCEL) /* thread cancellation signal used by libthread */
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| 203 | signal_names[SIGCANCEL] = "SIGCANCEL";
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| 204 | #endif
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| 205 |
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| 206 | #if defined (SIGXRES) /* resource control exceeded */
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| 207 | signal_names[SIGXRES] = "SIGXRES";
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| 208 | #endif
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| 209 |
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| 210 | /* HP-UX */
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| 211 | #if defined (SIGDIL) /* DIL signal (?) */
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| 212 | signal_names[SIGDIL] = "SIGDIL";
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| 213 | #endif
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| 214 |
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| 215 | /* System V */
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| 216 | #if defined (SIGCLD) /* Like SIGCHLD. */
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| 217 | signal_names[SIGCLD] = "SIGCLD";
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| 218 | #endif
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| 219 |
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| 220 | #if defined (SIGPWR) /* power state indication */
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| 221 | signal_names[SIGPWR] = "SIGPWR";
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| 222 | #endif
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| 223 |
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| 224 | #if defined (SIGPOLL) /* Pollable event (for streams) */
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| 225 | signal_names[SIGPOLL] = "SIGPOLL";
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| 226 | #endif
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| 227 |
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| 228 | /* Unknown */
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| 229 | #if defined (SIGWINDOW)
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| 230 | signal_names[SIGWINDOW] = "SIGWINDOW";
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| 231 | #endif
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| 232 |
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| 233 | /* Linux */
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| 234 | #if defined (SIGSTKFLT)
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| 235 | signal_names[SIGSTKFLT] = "SIGSTKFLT";
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| 236 | #endif
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| 237 |
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| 238 | /* FreeBSD */
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| 239 | #if defined (SIGTHR) /* thread interrupt */
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| 240 | signal_names[SIGTHR] = "SIGTHR";
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| 241 | #endif
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| 242 |
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| 243 | /* Common */
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| 244 | #if defined (SIGHUP) /* hangup */
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| 245 | signal_names[SIGHUP] = "SIGHUP";
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| 246 | #endif
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| 247 |
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| 248 | #if defined (SIGINT) /* interrupt */
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| 249 | signal_names[SIGINT] = "SIGINT";
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| 250 | #endif
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| 251 |
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| 252 | #if defined (SIGQUIT) /* quit */
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| 253 | signal_names[SIGQUIT] = "SIGQUIT";
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| 254 | #endif
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| 255 |
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| 256 | #if defined (SIGILL) /* illegal instruction (not reset when caught) */
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| 257 | signal_names[SIGILL] = "SIGILL";
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| 258 | #endif
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| 259 |
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| 260 | #if defined (SIGTRAP) /* trace trap (not reset when caught) */
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| 261 | signal_names[SIGTRAP] = "SIGTRAP";
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| 262 | #endif
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| 263 |
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| 264 | #if defined (SIGIOT) /* IOT instruction */
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| 265 | signal_names[SIGIOT] = "SIGIOT";
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| 266 | #endif
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| 267 |
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| 268 | #if defined (SIGABRT) /* Cause current process to dump core. */
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| 269 | signal_names[SIGABRT] = "SIGABRT";
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| 270 | #endif
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| 271 |
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| 272 | #if defined (SIGEMT) /* EMT instruction */
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| 273 | signal_names[SIGEMT] = "SIGEMT";
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| 274 | #endif
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| 275 |
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| 276 | #if defined (SIGFPE) /* floating point exception */
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| 277 | signal_names[SIGFPE] = "SIGFPE";
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| 278 | #endif
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| 279 |
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| 280 | #if defined (SIGKILL) /* kill (cannot be caught or ignored) */
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| 281 | signal_names[SIGKILL] = "SIGKILL";
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| 282 | #endif
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| 283 |
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| 284 | #if defined (SIGBUS) /* bus error */
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| 285 | signal_names[SIGBUS] = "SIGBUS";
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| 286 | #endif
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| 287 |
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| 288 | #if defined (SIGSEGV) /* segmentation violation */
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| 289 | signal_names[SIGSEGV] = "SIGSEGV";
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| 290 | #endif
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| 291 |
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| 292 | #if defined (SIGSYS) /* bad argument to system call */
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| 293 | signal_names[SIGSYS] = "SIGSYS";
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| 294 | #endif
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| 295 |
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| 296 | #if defined (SIGPIPE) /* write on a pipe with no one to read it */
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| 297 | signal_names[SIGPIPE] = "SIGPIPE";
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| 298 | #endif
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| 299 |
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| 300 | #if defined (SIGALRM) /* alarm clock */
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| 301 | signal_names[SIGALRM] = "SIGALRM";
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| 302 | #endif
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| 303 |
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| 304 | #if defined (SIGTERM) /* software termination signal from kill */
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| 305 | signal_names[SIGTERM] = "SIGTERM";
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| 306 | #endif
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| 307 |
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| 308 | #if defined (SIGURG) /* urgent condition on IO channel */
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| 309 | signal_names[SIGURG] = "SIGURG";
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| 310 | #endif
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| 311 |
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| 312 | #if defined (SIGSTOP) /* sendable stop signal not from tty */
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| 313 | signal_names[SIGSTOP] = "SIGSTOP";
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| 314 | #endif
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| 315 |
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| 316 | #if defined (SIGTSTP) /* stop signal from tty */
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| 317 | signal_names[SIGTSTP] = "SIGTSTP";
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| 318 | #endif
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| 319 |
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