Import /usr/src/bin/sh from FreeBSD 12.0-RELEASE

2 files changed, 190 insertions, 0 deletions

diff --git a/bin/cash/bltin/bltin.h b/bin/cash/bltin/bltin.h
new file mode 100644
index 00000000..f7de331a
--- /dev/null
+++ b/bin/cash/bltin/bltin.h
@@ -0,0 +1,81 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * 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.
+ *
+ *	@(#)bltin.h	8.2 (Berkeley) 5/4/95
+ * $FreeBSD: releng/12.0/bin/sh/bltin/bltin.h 326025 2017-11-20 19:49:47Z pfg $
+ */
+
+/*
+ * This file is included by programs which are optionally built into the
+ * shell.  If SHELL is defined, we try to map the standard UNIX library
+ * routines to ash routines using defines.
+ */
+
+#include "../shell.h"
+#include "../mystring.h"
+#ifdef SHELL
+#include "../error.h"
+#include "../output.h"
+#include "builtins.h"
+#define FILE struct output
+#undef stdout
+#define stdout out1
+#undef stderr
+#define stderr out2
+#define printf out1fmt
+#undef putc
+#define putc(c, file)	outc(c, file)
+#undef putchar
+#define putchar(c)	out1c(c)
+#define fprintf outfmt
+#define fputs outstr
+#define fwrite(ptr, size, nmemb, file) outbin(ptr, (size) * (nmemb), file)
+#define fflush flushout
+#define INITARGS(argv)
+#define warnx warning
+#define warn(fmt, ...) warning(fmt ": %s", __VA_ARGS__, strerror(errno))
+#define errx(exitstatus, ...) error(__VA_ARGS__)
+
+#else
+#undef NULL
+#include <stdio.h>
+#undef main
+#define INITARGS(argv)	if ((commandname = argv[0]) == NULL) {fputs("Argc is zero\n", stderr); exit(2);} else
+#endif
+
+#include <unistd.h>
+
+pointer stalloc(int);
+int killjob(const char *, int);
+
+extern char *commandname;
diff --git a/bin/cash/bltin/echo.c b/bin/cash/bltin/echo.c
new file mode 100644
index 00000000..78c146e9
--- /dev/null
+++ b/bin/cash/bltin/echo.c
@@ -0,0 +1,109 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * 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.
+ *
+ *	@(#)echo.c	8.2 (Berkeley) 5/4/95
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: releng/12.0/bin/sh/bltin/echo.c 326025 2017-11-20 19:49:47Z pfg $");
+
+/*
+ * Echo command.
+ */
+
+#define main echocmd
+
+#include "bltin.h"
+
+/* #define eflag 1 */
+
+int
+main(int argc, char *argv[])
+{
+	char **ap;
+	char *p;
+	char c;
+	int count;
+	int nflag = 0;
+#ifndef eflag
+	int eflag = 0;
+#endif
+
+	ap = argv;
+	if (argc)
+		ap++;
+	if ((p = *ap) != NULL) {
+		if (equal(p, "-n")) {
+			nflag++;
+			ap++;
+		} else if (equal(p, "-e")) {
+#ifndef eflag
+			eflag++;
+#endif
+			ap++;
+		}
+	}
+	while ((p = *ap++) != NULL) {
+		while ((c = *p++) != '\0') {
+			if (c == '\\' && eflag) {
+				switch (*p++) {
+				case 'a':  c = '\a';  break;
+				case 'b':  c = '\b';  break;
+				case 'c':  return 0;		/* exit */
+				case 'e':  c = '\033';  break;
+				case 'f':  c = '\f';  break;
+				case 'n':  c = '\n';  break;
+				case 'r':  c = '\r';  break;
+				case 't':  c = '\t';  break;
+				case 'v':  c = '\v';  break;
+				case '\\':  break;		/* c = '\\' */
+				case '0':
+					c = 0;
+					count = 3;
+					while (--count >= 0 && (unsigned)(*p - '0') < 8)
+						c = (c << 3) + (*p++ - '0');
+					break;
+				default:
+					p--;
+					break;
+				}
+			}
+			putchar(c);
+		}
+		if (*ap)
+			putchar(' ');
+	}
+	if (! nflag)
+		putchar('\n');
+	return 0;
+}