9d10fab6bd
e.g. boot_mute, boot_single, boot_verbose, and friends; we checked for these in multiple places, consolidate into common/ and allow a setting of "NO" for any of these to turn them off. This allows systems with multiple loader.conf(5) or loader.conf(5) overlay systems to easily turn off variables in later processed files by setting it to NO. Reported by: Nick Wolff @ iXsystems Reviewed by: imp
167 lines
4.1 KiB
C
167 lines
4.1 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include <sys/param.h>
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#include <sys/reboot.h>
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#include <sys/linker.h>
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#include <sys/boot.h>
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#include "bootstrap.h"
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#include "libi386.h"
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#include "btxv86.h"
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int
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bi_getboothowto(char *kargs)
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{
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char *cp;
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char *curpos, *next, *string;
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int howto;
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int active;
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int vidconsole;
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/* Parse kargs */
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howto = 0;
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if (kargs != NULL) {
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cp = kargs;
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active = 0;
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while (*cp != 0) {
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if (!active && (*cp == '-')) {
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active = 1;
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} else if (active)
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switch (*cp) {
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case 'a':
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howto |= RB_ASKNAME;
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break;
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case 'C':
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howto |= RB_CDROM;
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break;
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case 'd':
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howto |= RB_KDB;
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break;
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case 'D':
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howto |= RB_MULTIPLE;
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break;
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case 'm':
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howto |= RB_MUTE;
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break;
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case 'g':
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howto |= RB_GDB;
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break;
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case 'h':
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howto |= RB_SERIAL;
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break;
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case 'p':
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howto |= RB_PAUSE;
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break;
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case 'r':
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howto |= RB_DFLTROOT;
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break;
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case 's':
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howto |= RB_SINGLE;
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break;
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case 'v':
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howto |= RB_VERBOSE;
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break;
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default:
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active = 0;
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break;
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}
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cp++;
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}
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}
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howto |= bootenv_flags();
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/* Enable selected consoles */
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string = next = strdup(getenv("console"));
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vidconsole = 0;
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while (next != NULL) {
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curpos = strsep(&next, " ,");
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if (*curpos == '\0')
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continue;
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if (!strcmp(curpos, "vidconsole"))
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vidconsole = 1;
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else if (!strcmp(curpos, "comconsole"))
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howto |= RB_SERIAL;
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else if (!strcmp(curpos, "nullconsole"))
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howto |= RB_MUTE;
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}
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if (vidconsole && (howto & RB_SERIAL))
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howto |= RB_MULTIPLE;
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/*
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* XXX: Note that until the kernel is ready to respect multiple consoles
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* for the boot messages, the first named console is the primary console
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*/
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if (!strcmp(string, "vidconsole"))
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howto &= ~RB_SERIAL;
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free(string);
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return(howto);
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}
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void
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bi_setboothowto(int howto)
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{
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int i;
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for (i = 0; howto_names[i].ev != NULL; i++)
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if (howto & howto_names[i].mask)
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setenv(howto_names[i].ev, "YES", 1);
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}
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/*
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* Copy the environment into the load area starting at (addr).
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* Each variable is formatted as <name>=<value>, with a single nul
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* separating each variable, and a double nul terminating the environment.
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*/
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vm_offset_t
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bi_copyenv(vm_offset_t addr)
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{
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struct env_var *ep;
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/* traverse the environment */
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for (ep = environ; ep != NULL; ep = ep->ev_next) {
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i386_copyin(ep->ev_name, addr, strlen(ep->ev_name));
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addr += strlen(ep->ev_name);
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i386_copyin("=", addr, 1);
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addr++;
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if (ep->ev_value != NULL) {
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i386_copyin(ep->ev_value, addr, strlen(ep->ev_value));
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addr += strlen(ep->ev_value);
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}
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i386_copyin("", addr, 1);
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addr++;
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}
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i386_copyin("", addr, 1);
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addr++;
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return(addr);
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}
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