--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/psm/stand/bootlst/common/bootlst.c	Fri Apr 11 18:36:28 2008 -0700
@@ -0,0 +1,210 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/promif.h>
+#include <sys/salib.h>
+
+#define	MAX_CMDLINE	1600  /* from GRUB source */
+
+char **titles;
+char **datasets;
+
+int	menu_entry_count;
+int	menu_table_size;
+
+int	in_menu_entry;
+
+#define	ENTRY_ALLOC_COUNT	10
+
+extern void	set_default_fs(char *fsw_name);
+extern int	mountroot(char *str);
+
+void
+init_table(void)
+{
+
+	menu_entry_count = 0;
+	titles = (char **)calloc(ENTRY_ALLOC_COUNT, sizeof (char *));
+	datasets = (char **)calloc(ENTRY_ALLOC_COUNT, sizeof (char *));
+	if (titles == NULL || datasets == NULL)
+		prom_panic("out of mem");
+	menu_table_size = ENTRY_ALLOC_COUNT;
+	in_menu_entry = 0;
+}
+
+void
+add_title_entry(char *title_str)
+{
+
+	/* skip leading white space */
+	while (isspace(*title_str))
+		title_str++;
+
+	if (menu_entry_count == menu_table_size) {
+		printf("Reallocating at count %d\n", menu_table_size);
+		titles = (char **)realloc(titles,
+		    ENTRY_ALLOC_COUNT * sizeof (char *));
+		datasets = (char **)realloc(datasets,
+		    ENTRY_ALLOC_COUNT * sizeof (char *));
+		if (titles == NULL || datasets == NULL)
+			prom_panic("out of mem");
+		menu_table_size += ENTRY_ALLOC_COUNT;
+	}
+
+	if (in_menu_entry)
+		free(titles[menu_entry_count]);
+	if ((titles[menu_entry_count] = strdup(title_str)) == NULL)
+		prom_panic("out of mem");
+	in_menu_entry = 1;
+}
+
+void
+add_dataset_entry(char *dataset_str)
+{
+	char	*cp;
+
+	/* skip leading white space */
+	while (isspace(*dataset_str))
+		dataset_str++;
+
+	/* if there is still any white space in the line, it's invalid */
+	for (cp = dataset_str; *cp; cp++)
+		if (isspace(*cp))
+			break;
+	if (*cp)
+		return;  /* dataset name was invalid */
+
+	if (!in_menu_entry)
+		return;	 /* dataset line was not preceded by a title */
+
+	if ((datasets[menu_entry_count] = strdup(dataset_str)) == NULL)
+		prom_panic("out of mem");
+	menu_entry_count++;
+	in_menu_entry = 0;
+}
+
+
+char *
+trim_white_space(char *cp)
+{
+	char	*ep;
+
+	/* skip leading white space */
+	while (isspace(*cp))
+		cp++;
+
+	/*
+	 *  if the string contained nothing but white space, return a
+	 *  null string.
+	 */
+	if (*cp == '\0')
+		return (cp);
+
+	/* truncate trailing white space */
+	for (ep = cp + strlen(cp) - 1; isspace(*ep); ep--)
+		;
+	ep++;
+	*ep = '\0';
+	return (cp);
+}
+
+char *cons_gets(char *, int);
+
+void
+main(void *cif)
+{
+	char linebuf[MAX_CMDLINE];
+	FILE	*file;
+	char	*cp, *ep;
+	int	n;
+	unsigned long	choice;
+
+	prom_init("bootlst", cif);
+	set_default_fs("promfs");
+	if (mountroot("bootfs") != 0)
+		prom_panic("can't mount root");
+
+	if ((file = fopen("/boot/menu.lst", "r")) == NULL)
+		prom_panic("can't open menu.lst");
+	init_table();
+
+	while (fgets(linebuf, MAX_CMDLINE, file)) {
+		cp = trim_white_space(linebuf);
+
+		/* skip comments and blank lines */
+		if (*cp == '#' || *cp == '\0')
+			continue;
+
+		/* find end of first keyword on line */
+		for (ep = cp; !isspace(*ep) && *ep; ep++)
+			;
+
+		/* if at the end of the line, the line had no arguments */
+		if (*ep == '\0')
+			continue;
+
+		*ep = '\0';
+
+		if (strcmp(cp, "title") == 0) {
+			add_title_entry(ep + 1);
+			continue;
+		}
+
+		if (strcmp(cp, "bootfs") == 0) {
+			add_dataset_entry(ep + 1);
+			continue;
+		}
+	}
+
+	if (menu_entry_count == 0)
+		prom_panic("no menu entries found");
+
+	for (n = 0; n < menu_entry_count; n++) {
+		printf("%d %s\n", n + 1, titles[n]);
+	}
+
+	printf("Select environment to boot: [ 1 - %d ]: ", menu_entry_count);
+
+	while (cons_gets(linebuf, MAX_CMDLINE)) {
+		/* cut off leading and trailing white space */
+		cp = trim_white_space(linebuf);
+		choice = strtoul(cp, NULL, 0);
+
+		/*
+		 * If the input is totally invalid, the return value of
+		 * strtoul() will be 0 or ULONG_MAX.  Either way, it's
+		 * of the acceptable range.
+		 */
+		if (choice == 0 || choice > menu_entry_count) {
+			printf("Invalid entry.\n");
+			continue;
+		}
+		/* XXX here is the result */
+		printf("\nTo boot the selected entry, invoke:\n");
+		printf("boot [<root-device>] -Z %s\n\n", datasets[choice - 1]);
+		prom_exit_to_mon();
+	}
+}