diff options
Diffstat (limited to '')
| -rw-r--r-- | bin/1sh/error.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/bin/1sh/error.c b/bin/1sh/error.c deleted file mode 100644 index 02680718..00000000 --- a/bin/1sh/error.c +++ /dev/null @@ -1,199 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Kenneth Almquist. - * - * 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 lint -#if 0 -static char sccsid[] = "@(#)error.c 8.2 (Berkeley) 5/4/95"; -#endif -#endif /* not lint */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD: releng/12.0/bin/sh/error.c 314436 2017-02-28 23:42:47Z imp $"); - -/* - * Errors and exceptions. - */ - -#include "shell.h" -#include "eval.h" -#include "main.h" -#include "options.h" -#include "output.h" -#include "error.h" -#include "nodes.h" /* show.h needs nodes.h */ -#include "show.h" -#include "trap.h" -#include <signal.h> -#include <stdlib.h> -#include <unistd.h> -#include <errno.h> - - -/* - * Code to handle exceptions in C. - */ - -struct jmploc *handler; -volatile sig_atomic_t exception; -volatile sig_atomic_t suppressint; -volatile sig_atomic_t intpending; - - -static void exverror(int, const char *, va_list) __printf0like(2, 0) __dead2; - -/* - * Called to raise an exception. Since C doesn't include exceptions, we - * just do a longjmp to the exception handler. The type of exception is - * stored in the global variable "exception". - * - * Interrupts are disabled; they should be reenabled when the exception is - * caught. - */ - -void -exraise(int e) -{ - INTOFF; - if (handler == NULL) - abort(); - exception = e; - longjmp(handler->loc, 1); -} - - -/* - * Called from trap.c when a SIGINT is received and not suppressed, or when - * an interrupt is pending and interrupts are re-enabled using INTON. - * (If the user specifies that SIGINT is to be trapped or ignored using the - * trap builtin, then this routine is not called.) Suppressint is nonzero - * when interrupts are held using the INTOFF macro. If SIGINTs are not - * suppressed and the shell is not a root shell, then we want to be - * terminated if we get here, as if we were terminated directly by a SIGINT. - * Arrange for this here. - */ - -void -onint(void) -{ - sigset_t sigs; - - intpending = 0; - sigemptyset(&sigs); - sigprocmask(SIG_SETMASK, &sigs, NULL); - - /* - * This doesn't seem to be needed, since main() emits a newline. - */ -#if 0 - if (tcgetpgrp(0) == getpid()) - write(STDERR_FILENO, "\n", 1); -#endif - if (rootshell && iflag) - exraise(EXINT); - else { - signal(SIGINT, SIG_DFL); - kill(getpid(), SIGINT); - _exit(128 + SIGINT); - } -} - - -static void -vwarning(const char *msg, va_list ap) -{ - if (commandname) - outfmt(out2, "%s: ", commandname); - else if (arg0) - outfmt(out2, "%s: ", arg0); - doformat(out2, msg, ap); - out2fmt_flush("\n"); -} - - -void -warning(const char *msg, ...) -{ - va_list ap; - va_start(ap, msg); - vwarning(msg, ap); - va_end(ap); -} - - -/* - * Exverror is called to raise the error exception. If the first argument - * is not NULL then error prints an error message using printf style - * formatting. It then raises the error exception. - */ -static void -exverror(int cond, const char *msg, va_list ap) -{ - /* - * An interrupt trumps an error. Certain places catch error - * exceptions or transform them to a plain nonzero exit code - * in child processes, and if an error exception can be handled, - * an interrupt can be handled as well. - * - * exraise() will disable interrupts for the exception handler. - */ - FORCEINTON; - -#ifdef DEBUG - if (msg) - TRACE(("exverror(%d, \"%s\") pid=%d\n", cond, msg, getpid())); - else - TRACE(("exverror(%d, NULL) pid=%d\n", cond, getpid())); -#endif - if (msg) - vwarning(msg, ap); - flushall(); - exraise(cond); -} - - -void -error(const char *msg, ...) -{ - va_list ap; - va_start(ap, msg); - exverror(EXERROR, msg, ap); - va_end(ap); -} - - -void -exerror(int cond, const char *msg, ...) -{ - va_list ap; - va_start(ap, msg); - exverror(cond, msg, ap); - va_end(ap); -} |