Adding upstream version 2.0.13.upstream/2.0.13upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 133 insertions, 0 deletions

diff --git a/usr/dash/error.h b/usr/dash/error.h
new file mode 100644
index 0000000..f91d11d
--- /dev/null
+++ b/usr/dash/error.h
@@ -0,0 +1,133 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 1997-2005
+ *	Herbert Xu <herbert@gondor.apana.org.au>.  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.
+ *
+ *	@(#)error.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef DASH_ERROR_H
+#define DASH_ERROR_H
+
+#include <setjmp.h>
+#include <signal.h>
+
+/*
+ * Types of operations (passed to the errmsg routine).
+ */
+
+#define E_OPEN 01	/* opening a file */
+#define E_CREAT 02	/* creating a file */
+#define E_EXEC 04	/* executing a program */
+
+
+/*
+ * We enclose jmp_buf in a structure so that we can declare pointers to
+ * jump locations.  The global variable handler contains the location to
+ * jump to when an exception occurs, and the global variable exception
+ * contains a code identifying the exeception.  To implement nested
+ * exception handlers, the user should save the value of handler on entry
+ * to an inner scope, set handler to point to a jmploc structure for the
+ * inner scope, and restore handler on exit from the scope.
+ */
+
+struct jmploc {
+	jmp_buf loc;
+};
+
+extern struct jmploc *handler;
+extern int exception;
+
+/* exceptions */
+#define EXINT 0		/* SIGINT received */
+#define EXERROR 1	/* a generic error */
+#define EXEXIT 4	/* exit the shell */
+
+
+/*
+ * These macros allow the user to suspend the handling of interrupt signals
+ * over a period of time.  This is similar to SIGHOLD to or sigblock, but
+ * much more efficient and portable.  (But hacking the kernel is so much
+ * more fun than worrying about efficiency and portability. :-))
+ */
+
+extern int suppressint;
+extern volatile sig_atomic_t intpending;
+
+#define barrier() ({ __asm__ __volatile__ ("": : :"memory"); })
+#define INTOFF \
+	({ \
+		suppressint++; \
+		barrier(); \
+		0; \
+	})
+#ifdef REALLY_SMALL
+void __inton(void);
+#define INTON __inton()
+#else
+#define INTON \
+	({ \
+		barrier(); \
+		if (--suppressint == 0 && intpending) onint(); \
+		0; \
+	})
+#endif
+#define FORCEINTON \
+	({ \
+		barrier(); \
+		suppressint = 0; \
+		if (intpending) onint(); \
+		0; \
+	})
+#define SAVEINT(v) ((v) = suppressint)
+#define RESTOREINT(v) \
+	({ \
+		barrier(); \
+		if ((suppressint = (v)) == 0 && intpending) onint(); \
+		0; \
+	})
+#define CLEAR_PENDING_INT intpending = 0
+#define int_pending() intpending
+
+void exraise(int) __attribute__((__noreturn__));
+#ifdef USE_NORETURN
+void onint(void) __attribute__((__noreturn__));
+#else
+void onint(void);
+#endif
+extern int errlinno;
+void sh_error(const char *, ...) __attribute__((__noreturn__));
+void exerror(int, const char *, ...) __attribute__((__noreturn__));
+const char *errmsg(int, int);
+
+void sh_warnx(const char *, ...);
+
+#endif		/* DASH_ERROR_H */