1 /* $NetBSD: bootmenu.c,v 1.20 2024/11/27 17:19:37 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef SMALL 30 31 #include <sys/types.h> 32 #include <sys/reboot.h> 33 #include <sys/bootblock.h> 34 35 #include <lib/libsa/stand.h> 36 #include <lib/libsa/bootcfg.h> 37 #include <lib/libsa/ufs.h> 38 #include <lib/libkern/libkern.h> 39 40 #include <libi386.h> 41 #include <bootmenu.h> 42 43 static void docommandchoice(int); 44 45 extern struct x86_boot_params boot_params; 46 extern const char bootprog_name[], bootprog_rev[], bootprog_kernrev[]; 47 48 #define MENUFORMAT_AUTO 0 49 #define MENUFORMAT_NUMBER 1 50 #define MENUFORMAT_LETTER 2 51 52 /* 53 * XXX 54 * if module_add, userconf_add are strictly mi they can be folded back 55 * into sys/lib/libsa/bootcfg.c:perform_bootcfg(). 56 */ 57 static void 58 do_bootcfg_command(const char *cmd, char *arg) 59 { 60 if (strcmp(cmd, BOOTCFG_CMD_LOAD) == 0) 61 module_add(arg); 62 else if (strcmp(cmd, "fs") == 0) 63 fs_add(arg); 64 else if (strcmp(cmd, BOOTCFG_CMD_USERCONF) == 0) 65 userconf_add(arg); 66 } 67 68 int 69 parsebootconf(const char *conf) 70 { 71 return perform_bootcfg(conf, &do_bootcfg_command, 32768); 72 } 73 74 /* 75 * doboottypemenu will render the menu and parse any user input 76 */ 77 static int 78 getchoicefrominput(char *input, int def) 79 { 80 int choice, usedef; 81 82 choice = -1; 83 usedef = 0; 84 85 if (*input == '\0' || *input == '\r' || *input == '\n') { 86 choice = def; 87 usedef = 1; 88 } else if (*input >= 'A' && *input < bootcfg_info.nummenu + 'A') 89 choice = (*input) - 'A'; 90 else if (*input >= 'a' && *input < bootcfg_info.nummenu + 'a') 91 choice = (*input) - 'a'; 92 else if (isdigit(*input)) { 93 choice = atoi(input) - 1; 94 if (choice < 0 || choice >= bootcfg_info.nummenu) 95 choice = -1; 96 } 97 98 if (bootcfg_info.menuformat != MENUFORMAT_LETTER && 99 !isdigit(*input) && !usedef) 100 choice = -1; 101 102 return choice; 103 } 104 105 static void 106 docommandchoice(int choice) 107 { 108 char input[80], *ic, *oc; 109 110 ic = bootcfg_info.command[choice]; 111 /* Split command string at ; into separate commands */ 112 do { 113 oc = input; 114 /* Look for ; separator */ 115 for (; *ic && *ic != COMMAND_SEPARATOR; ic++) 116 *oc++ = *ic; 117 if (*input == '\0') 118 continue; 119 /* Strip out any trailing spaces */ 120 oc--; 121 for (; *oc == ' ' && oc > input; oc--); 122 *++oc = '\0'; 123 if (*ic == COMMAND_SEPARATOR) 124 ic++; 125 /* Stop silly command strings like ;;; */ 126 if (*input != '\0') 127 docommand(input); 128 /* Skip leading spaces */ 129 for (; *ic == ' '; ic++); 130 } while (*ic); 131 } 132 133 __dead void 134 doboottypemenu(void) 135 { 136 int choice; 137 char input[80]; 138 139 /* 140 * If we have a single menu entry with empty description and 141 * timeout = 0 we do not display any menu. 142 */ 143 if ((bootcfg_info.nummenu > 0 && 144 bootcfg_info.desc[0] != bootcfg_info.command[0] && 145 bootcfg_info.desc[0][0] != 0) || bootcfg_info.timeout > 0) { 146 printf("\n"); 147 148 /* Display menu */ 149 if (bootcfg_info.menuformat == MENUFORMAT_LETTER) { 150 for (choice = 0; choice < bootcfg_info.nummenu; 151 choice++) 152 printf(" %c. %s\n", choice + 'A', 153 bootcfg_info.desc[choice]); 154 } else { 155 /* Can't use %2d format string with libsa */ 156 for (choice = 0; choice < bootcfg_info.nummenu; 157 choice++) 158 printf(" %s%d. %s\n", 159 (choice < 9) ? " " : "", 160 choice + 1, 161 bootcfg_info.desc[choice]); 162 } 163 } 164 choice = -1; 165 for (;;) { 166 input[0] = '\0'; 167 168 if (bootcfg_info.timeout < 0) { 169 if (bootcfg_info.menuformat == MENUFORMAT_LETTER) 170 printf("\nOption: [%c]:", 171 bootcfg_info.def + 'A'); 172 else 173 printf("\nOption: [%d]:", 174 bootcfg_info.def + 1); 175 176 kgets(input, sizeof(input)); 177 choice = getchoicefrominput(input, bootcfg_info.def); 178 } else if (bootcfg_info.timeout == 0) 179 choice = bootcfg_info.def; 180 else { 181 printf("\nChoose an option; RETURN for default; " 182 "SPACE to stop countdown.\n"); 183 if (bootcfg_info.menuformat == MENUFORMAT_LETTER) 184 printf("Option %c will be chosen in ", 185 bootcfg_info.def + 'A'); 186 else 187 printf("Option %d will be chosen in ", 188 bootcfg_info.def + 1); 189 input[0] = awaitkey(bootcfg_info.timeout, 1); 190 input[1] = '\0'; 191 choice = getchoicefrominput(input, bootcfg_info.def); 192 /* If invalid key pressed, drop to menu */ 193 if (choice == -1) 194 bootcfg_info.timeout = -1; 195 } 196 if (choice < 0) 197 continue; 198 if (!strcmp(bootcfg_info.command[choice], "prompt") && 199 ((boot_params.bp_flags & X86_BP_FLAGS_PASSWORD) == 0 || 200 check_password((char *)boot_params.bp_password))) { 201 printf("type \"?\" or \"help\" for help.\n"); 202 bootmenu(); /* does not return */ 203 } else { 204 docommandchoice(choice); 205 } 206 207 } 208 } 209 210 #endif /* !SMALL */ 211