1 files changed, 90 insertions, 0 deletions
diff --git a/serverboot/gets.c b/serverboot/gets.c
new file mode 100644
index 00000000..61d14460
--- /dev/null
+++ b/serverboot/gets.c
@@ -0,0 +1,90 @@
+/*
+ * Mach Operating System
+ * Copyright (c) 1993-1989 Carnegie Mellon University.
+ * Copyright (c) 1994 The University of Utah and
+ * the Computer Systems Laboratory (CSL).
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON, THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF
+ * THIS SOFTWARE IN ITS "AS IS" CONDITION, AND DISCLAIM ANY LIABILITY
+ * OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF
+ * THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+
+#include <mach.h>
+#include <device/device.h>
+#include <varargs.h>
+
+extern mach_port_t __libmach_console_port;
+
+safe_gets(str, maxlen)
+	char *str;
+	int  maxlen;
+{
+	register char *lp;
+	register int c;
+
+	char	inbuf[IO_INBAND_MAX];
+	mach_msg_type_number_t count;
+	register char *ip;
+	char *strmax = str + maxlen - 1; /* allow space for trailing 0 */
+
+	lp = str;
+	for (;;) {
+	    count = IO_INBAND_MAX;
+	    (void) device_read_inband(__libmach_console_port,
+	    			      (dev_mode_t)0, (recnum_t)0,
+				      sizeof(inbuf), inbuf, &count);
+	    for (ip = inbuf; ip < &inbuf[count]; ip++) {
+		c = *ip;
+		switch (c) {
+		    case '\n':
+		    case '\r':
+			printf("\n");
+			*lp++ = 0;
+			return;
+
+		    case '\b':
+		    case '#':
+		    case '\177':
+			if (lp > str) {
+			    printf("\b \b");
+			    lp--;
+			}
+			continue;
+		    case '@':
+		    case 'u'&037:
+			lp = str;
+			printf("\n\r");
+			continue;
+		    default:
+			if (c >= ' ' && c < '\177') {
+			    if (lp < strmax) {
+				*lp++ = c;
+				printf("%c", c);
+			    }
+			    else {
+				printf("%c", '\007'); /* beep */
+			    }
+			}
+		}
+	    }
+	}
+}
+