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Diffstat (limited to 'tc.sig.h')
| -rw-r--r-- | tc.sig.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/tc.sig.h b/tc.sig.h new file mode 100644 index 000000000000..35781812130d --- /dev/null +++ b/tc.sig.h @@ -0,0 +1,173 @@ +/* $Header: /p/tcsh/cvsroot/tcsh/tc.sig.h,v 3.32 2006/03/11 15:32:00 mitr Exp $ */ +/* + * tc.sig.h: Signal handling + * + */ +/*- + * Copyright (c) 1980, 1991 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#ifndef _h_tc_sig +#define _h_tc_sig + +#if (SYSVREL > 0) || defined(BSD4_4) || defined(_MINIX) || defined(DGUX) || defined(WINNT_NATIVE) +# include <signal.h> +# ifndef SIGCHLD +# define SIGCHLD SIGCLD +# endif /* SIGCHLD */ +#else /* SYSVREL == 0 */ +# include <sys/signal.h> +#endif /* SYSVREL > 0 */ + +#if defined(__APPLE__) || defined(SUNOS4) || defined(DGUX) || defined(hp800) || (SYSVREL > 3 && defined(VFORK)) +# define SAVESIGVEC +#endif /* SUNOS4 || DGUX || hp800 || SVR4 & VFORK */ + +#if SYSVREL > 0 +# ifdef BSDJOBS +/* here I assume that systems that have bsdjobs implement the + * the setpgrp call correctly. Otherwise defining this would + * work, but it would kill the world, because all the setpgrp + * code is the the part defined when BSDJOBS are defined + * NOTE: we don't want killpg(a, b) == kill(-getpgrp(a), b) + * cause process a might be already dead and getpgrp would fail + */ +# define killpg(a, b) kill(-(a), (b)) +# else +/* this is the poor man's version of killpg()! Just kill the + * current process and don't worry about the rest. Someday + * I hope I get to fix that. + */ +# define killpg(a, b) kill((a), (b)) +# endif /* BSDJOBS */ +#endif /* SYSVREL > 0 */ + +#ifdef _MINIX +# include <signal.h> +# define killpg(a, b) kill((a), (b)) +# ifdef _MINIX_VMD +# define signal(a, b) signal((a), (a) == SIGCHLD ? SIG_IGN : (b)) +# endif /* _MINIX_VMD */ +#endif /* _MINIX */ + +#ifdef _VMS_POSIX +# define killpg(a, b) kill(-(a), (b)) +#endif /* atp _VMS_POSIX */ + +#ifdef aiws +# undef killpg +# define killpg(a, b) kill(-getpgrp(a), b) +#endif /* aiws */ + +#if !defined(NSIG) && defined(SIGMAX) +# define NSIG (SIGMAX+1) +#endif /* !NSIG && SIGMAX */ +#if !defined(NSIG) && defined(_SIG_MAX) +# define NSIG (_SIG_MAX+1) +#endif /* !NSIG && _SIG_MAX */ +#if !defined(NSIG) && defined(_NSIG) +# define NSIG _NSIG +#endif /* !NSIG && _NSIG */ +#if !defined(NSIG) +#define NSIG (sizeof(sigset_t) * 8) +#endif /* !NSIG */ +#if !defined(MAXSIG) && defined(NSIG) +# define MAXSIG NSIG +#endif /* !MAXSIG && NSIG */ + +/* + * We choose a define for the window signal if it exists.. + */ +#ifdef SIGWINCH +# define SIG_WINDOW SIGWINCH +#else +# ifdef SIGWINDOW +# define SIG_WINDOW SIGWINDOW +# endif /* SIGWINDOW */ +#endif /* SIGWINCH */ + +#ifdef SAVESIGVEC +# define NSIGSAVED 7 + /* + * These are not inline for speed. gcc -traditional -O on the sparc ignores + * the fact that vfork() corrupts the registers. Calling a routine is not + * nice, since it can make the compiler put some things that we want saved + * into registers - christos + */ +# define savesigvec(sv, sm) \ + do { \ + sigset_t m__; \ + \ + sigaction(SIGINT, NULL, &(sv)[0]); \ + sigaction(SIGQUIT, NULL, &(sv)[1]); \ + sigaction(SIGTSTP, NULL, &(sv)[2]); \ + sigaction(SIGTTIN, NULL, &(sv)[3]); \ + sigaction(SIGTTOU, NULL, &(sv)[4]); \ + sigaction(SIGTERM, NULL, &(sv)[5]); \ + sigaction(SIGHUP, NULL, &(sv)[6]); \ + sigemptyset(&m__); \ + sigaddset(&m__, SIGINT); \ + sigaddset(&m__, SIGQUIT); \ + sigaddset(&m__, SIGTSTP); \ + sigaddset(&m__, SIGTTIN); \ + sigaddset(&m__, SIGTTOU); \ + sigaddset(&m__, SIGTERM); \ + sigaddset(&m__, SIGHUP); \ + sigprocmask(SIG_BLOCK, &m__, &sm); \ + } while (0) + +# define restoresigvec(sv, sm) \ + do { \ + sigaction(SIGINT, &(sv)[0], NULL); \ + sigaction(SIGQUIT, &(sv)[1], NULL); \ + sigaction(SIGTSTP, &(sv)[2], NULL); \ + sigaction(SIGTTIN, &(sv)[3], NULL); \ + sigaction(SIGTTOU, &(sv)[4], NULL); \ + sigaction(SIGTERM, &(sv)[5], NULL); \ + sigaction(SIGHUP, &(sv)[6], NULL); \ + sigprocmask(SIG_SETMASK, &sm, NULL); \ + } while (0) +# endif /* SAVESIGVEC */ + +extern int alrmcatch_disabled; +extern int pchild_disabled; +extern int phup_disabled; +extern int pintr_disabled; + +extern void sigset_interrupting(int, void (*) (int)); +extern void handle_pending_signals(void); + +extern void queue_alrmcatch(int); +extern void queue_pchild(int); +extern void queue_phup(int); +extern void queue_pintr(int); + +extern void disabled_cleanup(void *); +extern void pintr_disabled_restore(void *); +extern void pintr_push_enable(int *); + +#endif /* _h_tc_sig */ |