add tools

1 files changed, 187 insertions, 0 deletions

diff --git a/bin/pax/tty_subs.c b/bin/pax/tty_subs.c
new file mode 100644
index 0000000..a07264a
--- /dev/null
+++ b/bin/pax/tty_subs.c
@@ -0,0 +1,187 @@
+/*	$OpenBSD: tty_subs.c,v 1.17 2016/08/26 04:22:13 guenther Exp $	*/
+/*	$NetBSD: tty_subs.c,v 1.5 1995/03/21 09:07:52 cgd Exp $	*/
+
+/*-
+ * Copyright (c) 1992 Keith Muller.
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Keith Muller of the University of California, San Diego.
+ *
+ * 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.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pax.h"
+#include "extern.h"
+
+/*
+ * routines that deal with I/O to and from the user
+ */
+
+#define DEVTTY		"/dev/tty"	/* device for interactive i/o */
+static FILE *ttyoutf = NULL;		/* output pointing at control tty */
+static FILE *ttyinf = NULL;		/* input pointing at control tty */
+
+/*
+ * tty_init()
+ *	try to open the controlling terminal (if any) for this process. if the
+ *	open fails, future ops that require user input will get an EOF
+ */
+
+int
+tty_init(void)
+{
+	int ttyfd;
+
+	if ((ttyfd = open(DEVTTY, O_RDWR | O_CLOEXEC)) >= 0) {
+		if ((ttyoutf = fdopen(ttyfd, "w")) != NULL) {
+			if ((ttyinf = fdopen(ttyfd, "r")) != NULL)
+				return(0);
+			(void)fclose(ttyoutf);
+		}
+		(void)close(ttyfd);
+	}
+
+	if (iflag) {
+		paxwarn(1, "Fatal error, cannot open %s", DEVTTY);
+		return(-1);
+	}
+	return(0);
+}
+
+/*
+ * tty_prnt()
+ *	print a message using the specified format to the controlling tty
+ *	if there is no controlling terminal, just return.
+ */
+
+void
+tty_prnt(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	if (ttyoutf == NULL) {
+		va_end(ap);
+		return;
+	}
+	(void)vfprintf(ttyoutf, fmt, ap);
+	va_end(ap);
+	(void)fflush(ttyoutf);
+}
+
+/*
+ * tty_read()
+ *	read a string from the controlling terminal if it is open into the
+ *	supplied buffer
+ * Return:
+ *	0 if data was read, -1 otherwise.
+ */
+
+int
+tty_read(char *str, int len)
+{
+	if (ttyinf == NULL || fgets(str, len, ttyinf) == NULL)
+		return(-1);
+
+	/*
+	 * strip off that trailing newline
+	 */
+	str[strcspn(str, "\n")] = '\0';
+	return(0);
+}
+
+/*
+ * paxwarn()
+ *	write a warning message to stderr. if "set" the exit value of pax
+ *	will be non-zero.
+ */
+
+void
+paxwarn(int set, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	if (set)
+		exit_val = 1;
+	/*
+	 * when vflag we better ship out an extra \n to get this message on a
+	 * line by itself
+	 */
+	if (vflag && vfpart) {
+		(void)fflush(listf);
+		(void)fputc('\n', stderr);
+		vfpart = 0;
+	}
+	(void)fprintf(stderr, "%s: ", argv0);
+	(void)vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	(void)fputc('\n', stderr);
+}
+
+/*
+ * syswarn()
+ *	write a warning message to stderr. if "set" the exit value of pax
+ *	will be non-zero.
+ */
+
+void
+syswarn(int set, int errnum, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	if (set)
+		exit_val = 1;
+	/*
+	 * when vflag we better ship out an extra \n to get this message on a
+	 * line by itself
+	 */
+	if (vflag && vfpart) {
+		(void)fflush(listf);
+		(void)fputc('\n', stderr);
+		vfpart = 0;
+	}
+	(void)fprintf(stderr, "%s: ", argv0);
+	(void)vfprintf(stderr, fmt, ap);
+	va_end(ap);
+
+	/*
+	 * format and print the errno
+	 */
+	if (errnum > 0)
+		(void)fprintf(stderr, ": %s", strerror(errnum));
+	(void)fputc('\n', stderr);
+}