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/*
* 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();
}
}
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