1 /*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <stand.h> 31 #include <sys/param.h> 32 #include <sys/reboot.h> 33 #include <sys/linker.h> 34 #include <sys/boot.h> 35 36 #include "bootstrap.h" 37 #include "libuserboot.h" 38 39 int 40 bi_getboothowto(char *kargs) 41 { 42 char *cp; 43 char *curpos, *next, *string; 44 int howto; 45 int active; 46 int i; 47 int vidconsole; 48 49 /* Parse kargs */ 50 howto = 0; 51 if (kargs != NULL) { 52 cp = kargs; 53 active = 0; 54 while (*cp != 0) { 55 if (!active && (*cp == '-')) { 56 active = 1; 57 } else if (active) 58 switch (*cp) { 59 case 'a': 60 howto |= RB_ASKNAME; 61 break; 62 case 'C': 63 howto |= RB_CDROM; 64 break; 65 case 'd': 66 howto |= RB_KDB; 67 break; 68 case 'D': 69 howto |= RB_MULTIPLE; 70 break; 71 case 'm': 72 howto |= RB_MUTE; 73 break; 74 case 'g': 75 howto |= RB_GDB; 76 break; 77 case 'h': 78 howto |= RB_SERIAL; 79 break; 80 case 'p': 81 howto |= RB_PAUSE; 82 break; 83 case 'r': 84 howto |= RB_DFLTROOT; 85 break; 86 case 's': 87 howto |= RB_SINGLE; 88 break; 89 case 'v': 90 howto |= RB_VERBOSE; 91 break; 92 default: 93 active = 0; 94 break; 95 } 96 cp++; 97 } 98 } 99 /* get equivalents from the environment */ 100 for (i = 0; howto_names[i].ev != NULL; i++) 101 if (getenv(howto_names[i].ev) != NULL) 102 howto |= howto_names[i].mask; 103 104 /* Enable selected consoles */ 105 string = next = strdup(getenv("console")); 106 vidconsole = 0; 107 while (next != NULL) { 108 curpos = strsep(&next, " ,"); 109 if (*curpos == '\0') 110 continue; 111 if (!strcmp(curpos, "vidconsole")) 112 vidconsole = 1; 113 else if (!strcmp(curpos, "comconsole")) 114 howto |= RB_SERIAL; 115 else if (!strcmp(curpos, "nullconsole")) 116 howto |= RB_MUTE; 117 } 118 119 if (vidconsole && (howto & RB_SERIAL)) 120 howto |= RB_MULTIPLE; 121 122 /* 123 * XXX: Note that until the kernel is ready to respect multiple consoles 124 * for the boot messages, the first named console is the primary console 125 */ 126 if (!strcmp(string, "vidconsole")) 127 howto &= ~RB_SERIAL; 128 129 free(string); 130 131 return(howto); 132 } 133 134 void 135 bi_setboothowto(int howto) 136 { 137 int i; 138 139 for (i = 0; howto_names[i].ev != NULL; i++) 140 if (howto & howto_names[i].mask) 141 setenv(howto_names[i].ev, "YES", 1); 142 } 143 144 /* 145 * Copy the environment into the load area starting at (addr). 146 * Each variable is formatted as <name>=<value>, with a single nul 147 * separating each variable, and a double nul terminating the environment. 148 */ 149 vm_offset_t 150 bi_copyenv(vm_offset_t addr) 151 { 152 struct env_var *ep; 153 154 /* traverse the environment */ 155 for (ep = environ; ep != NULL; ep = ep->ev_next) { 156 CALLBACK(copyin, ep->ev_name, addr, strlen(ep->ev_name)); 157 addr += strlen(ep->ev_name); 158 CALLBACK(copyin, "=", addr, 1); 159 addr++; 160 if (ep->ev_value != NULL) { 161 CALLBACK(copyin, ep->ev_value, addr, strlen(ep->ev_value)); 162 addr += strlen(ep->ev_value); 163 } 164 CALLBACK(copyin, "", addr, 1); 165 addr++; 166 } 167 CALLBACK(copyin, "", addr, 1); 168 addr++; 169 return(addr); 170 } 171