From 0609f60831648d3143729b187092b5610f7b48cd Mon Sep 17 00:00:00 2001
From: pjd <pjd@FreeBSD.org>
Date: Thu, 3 Feb 2005 15:10:58 +0000
Subject: - Move gets() function to libkern (I want to use it outside
 vfs_mount.c). - Add buffer size limitations (overflow will not be possible
 anymore). - Add 'visible' option, which will allow for passphrase reading in
 the   future. - Remove special treatment of '@' and '#', those two are only
 confusing.

Discussed with:	rwatson
MFC after:	2 weeks
---
 sys/libkern/gets.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 sys/libkern/gets.c

(limited to 'sys/libkern')

diff --git a/sys/libkern/gets.c b/sys/libkern/gets.c
new file mode 100644
index 0000000..4efc280
--- /dev/null
+++ b/sys/libkern/gets.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1999 Michael Smith
+ * Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/cons.h>
+#include <sys/libkern.h>
+
+void
+gets(char *cp, size_t size, int visible)
+{
+	char *lp, *end;
+	int c;
+
+	lp = cp;
+	end = cp + size - 1;
+	for (;;) {
+		c = cngetc() & 0177;
+		switch (c) {
+		case -1:
+		case '\n':
+		case '\r':
+			*lp = '\0';
+			return;
+		case '\b':
+		case '\177':
+			if (lp > cp) {
+				if (visible)
+					printf("%c \b", c);
+				lp--;
+			}
+			continue;
+		default:
+			if (lp < end) {
+				if (visible)
+					printf("%c", c);
+				*lp++ = c;
+			}
+		}
+	}
+}
-- 
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