diff options
Diffstat (limited to 'sys/stand/boot/vars.c')
| -rw-r--r-- | sys/stand/boot/vars.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/sys/stand/boot/vars.c b/sys/stand/boot/vars.c new file mode 100644 index 00000000000..644e27b11dc --- /dev/null +++ b/sys/stand/boot/vars.c @@ -0,0 +1,245 @@ +/* $OpenBSD: vars.c,v 1.1 1998/05/25 19:17:43 mickey Exp $ */ + +/* + * Copyright (c) 1998 Michael Shalayeff + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Michael Shalayeff. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#include <sys/param.h> +#include <libsa.h> +#include <sys/reboot.h> +#include "cmd.h" + +extern const char version[]; +extern int debug; + +static int Xaddr __P((void)); +static int Xdevice __P((void)); +#ifdef DEBUG +static int Xdebug __P((void)); +#endif +static int Ximage __P((void)); +static int Xhowto __P((void)); +static int Xtty __P((void)); +int Xset __P((void)); +int Xenv __P((void)); + +const struct cmd_table cmd_set[] = { + {"addr", CMDT_VAR, Xaddr}, + {"howto", CMDT_VAR, Xhowto}, +#ifdef DEBUG + {"debug", CMDT_VAR, Xdebug}, +#endif + {"device", CMDT_VAR, Xdevice}, + {"tty", CMDT_VAR, Xtty}, + {"image", CMDT_VAR, Ximage}, + {NULL,0} +}; + +#ifdef DEBUG +static int +Xdebug() +{ + if (cmd.argc !=2) + printf(debug? "on": "off"); + else + debug = (cmd.argv[1][0] == '0' || + (cmd.argv[1][0] == 'o' && cmd.argv[1][1] == 'f'))? + 0: 1; + return 0; +} +#endif + +/* called only w/ no arguments */ +int +Xset() +{ + register const struct cmd_table *ct; + + printf(">> OpenBSD/" MACHINE_ARCH " BOOT %s\n", version); + for (ct = cmd_set; ct->cmd_name != NULL; ct++) { + printf("%s\t ", ct->cmd_name); + (*ct->cmd_exec)(); + putchar('\n'); + } + return 0; +} + +static int +Xdevice() +{ + if (cmd.argc != 2) + printf(cmd.bootdev); + else + strncpy(cmd.bootdev, cmd.argv[1], sizeof(cmd.bootdev)); + return 0; +} + +static int +Ximage() +{ + if (cmd.argc != 2) + printf(cmd.image); + else + strncpy(cmd.image, cmd.argv[1], sizeof(cmd.image)); + return 0; +} + +static int +Xaddr() +{ + if (cmd.argc != 2) + printf("%p", cmd.addr); + else + cmd.addr = (void *)strtol(cmd.argv[1], NULL, 0); + return 0; +} + +static int +Xtty() +{ + dev_t dev; + + if (cmd.argc != 2) + printf(ttyname(0)); + else { + dev = ttydev(cmd.argv[1]); + if (dev == NODEV) + printf("%s not a console device\n", cmd.argv[1]); + else { + printf("switching console to %s\n", cmd.argv[1]); + if (cnset(dev)) + printf("%s console not present\n", + cmd.argv[1]); + } + } + return 0; +} + +static int +Xhowto() +{ + if (cmd.argc == 1) { + if (cmd.boothowto) { + putchar('-'); + if (cmd.boothowto & RB_ASKNAME) + putchar('a'); + if (cmd.boothowto & RB_HALT) + putchar('b'); + if (cmd.boothowto & RB_CONFIG) + putchar('c'); + if (cmd.boothowto & RB_SINGLE) + putchar('s'); + if (cmd.boothowto & RB_KDB) + putchar('d'); + } + } else + bootparse(1); + return 0; +} + +int +bootparse(i) + int i; +{ + register char *cp; + int howto = cmd.boothowto; + + for (; i < cmd.argc; i++) { + cp = cmd.argv[i]; + if (*cp == '-') { + while (*++cp) { + switch (*cp) { + case 'a': + howto |= RB_ASKNAME; + break; + case 'b': + howto |= RB_HALT; + break; + case 'c': + howto |= RB_CONFIG; + break; + case 's': + howto |= RB_SINGLE; + break; + case 'd': + howto |= RB_KDB; + break; + default: + printf("howto: bad option: %c\n", *cp); + return 1; + } + } + } else { + printf("boot: illegal argument %s\n", cmd.argv[i]); + return 1; + } + } + cmd.boothowto = howto; + return 0; +} + +/* + * maintain environmanet as a sequence of '\n' separated + * variable definitions in the form <name>=[<value>] + * terminated by the usual '\0' + */ +char *environ; +int +Xenv() +{ + if (cmd.argc == 1) { + if (environ) + printf(environ); + else + printf("empty\n"); + } else { + register char *p, *q; + int l; + for (p = environ; p && *p; p = q) { + l = strlen(cmd.argv[1]); + for (q = p; *q != '='; q++); + l = max(l, q - p); + for (q = p; *q != '\n'; q++); + if (*q) + q++; + if (!strncmp(p, cmd.argv[1], l)) { + while((*p++ = *q++)); + p--; + } + } + if (!p) + p = environ = alloc(NBPG); + sprintf(p, "%s=%s\n", + cmd.argv[1], (cmd.argc==3?cmd.argv[2]:"")); + } + + return 0; +} |