freebsd-skq/usr.sbin/sysinstall/system.c
jkh e3598880e3 Commit my latest changes before having a nap. Still not close to done,
nor is it in sync with my working sources, but it leaves me less CVS hassles
to bring in the new files at this time.  Still no documentation to translate
quite yet, but soon.  This stuff is actually very close now.
1995-05-01 21:56:32 +00:00

202 lines
4.1 KiB
C

/*
* The new sysinstall program.
*
* This is probably the last program in the `sysinstall' line - the next
* generation being essentially a complete rewrite.
*
* $Id: system.c,v 1.2 1995/04/29 19:33:06 jkh Exp $
*
* Jordan Hubbard
*
* My contributions are in the public domain.
*
* Parts of this file are also blatently stolen from Poul-Henning Kamp's
* previous version of sysinstall, and as such fall under his "BEERWARE"
* license, so buy him a beer if you like it! Buy him a beer for me, too!
*/
#include "sysinstall.h"
#include <signal.h>
#include <sys/reboot.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
/* Handle interrupt signals (duh!) */
static void
handle_intr(int sig)
{
}
/* Welcome the user to the system */
void
systemWelcome(void)
{
}
/* Initialize system defaults */
void
systemInitialize(int argc, char **argv)
{
signal(SIGINT, SIG_IGN);
globalsInit();
/* Are we running as init? */
if (getpid() == 1) {
setsid();
if (argc > 1 && strchr(argv[1],'C')) {
/* Kernel told us that we are on a CDROM root */
close(0); open("/bootcd/dev/console", O_RDWR);
close(1); dup(0);
close(2); dup(0);
CpioFD = open("/floppies/cpio.flp", O_RDONLY);
OnCDROM = TRUE;
chroot("/bootcd");
} else {
close(0); open("/dev/console", O_RDWR);
close(1); dup(0);
close(2); dup(0);
}
msgInfo("%s running as init", argv[0]);
ioctl(0, TIOCSCTTY, (char *)NULL);
setlogin("root");
setbuf(stdin, 0);
setbuf(stdout, 0);
setbuf(stderr, 0);
}
if (set_termcap() == -1)
msgFatal("Can't find terminal entry");
/* XXX - libdialog has particularly bad return value checking */
init_dialog();
/* If we haven't crashed I guess dialog is running ! */
DialogActive = TRUE;
signal(SIGINT, handle_intr);
}
/* Close down and prepare to exit */
void
systemShutdown(void)
{
if (DialogActive) {
end_dialog();
DialogActive = FALSE;
}
/* REALLY exit! */
if (getpid() == 1)
reboot(RB_HALT);
else
exit(1);
}
/* Run some general command */
int
systemExecute(char *command)
{
int status;
dialog_clear();
dialog_update();
end_dialog();
DialogActive = FALSE;
status = system(command);
DialogActive = TRUE;
dialog_clear();
dialog_update();
return status;
}
/* Find and execute a shell */
int
systemShellEscape(void)
{
char *sh = NULL;
if (file_executable("/bin/sh"))
sh = "/bin/sh";
else if (file_executable("/stand/sh"))
sh = "/stand/sh";
else {
msgWarn("No shell available, sorry!");
return 1;
}
setenv("PS1", "freebsd% ", 1);
dialog_clear();
dialog_update();
move(0, 0);
standout();
addstr("Type `exit' to leave this shell and continue installation");
standend();
refresh();
end_dialog();
DialogActive = FALSE;
if (fork() == 0)
execlp(sh, "-sh", 0);
else
wait(NULL);
dialog_clear();
DialogActive = TRUE;
return 0;
}
/* Display a file in a filebox */
int
systemDisplayFile(char *file)
{
char *fname = NULL;
char buf[FILENAME_MAX];
fname = systemHelpFile(file, buf);
if (!fname) {
snprintf(buf, FILENAME_MAX, "The %s file is not provided on this particular floppy image.", file);
use_helpfile(NULL);
use_helpline(NULL);
dialog_mesgbox("Sorry!", buf, -1, -1);
dialog_clear_norefresh();
return 1;
}
else {
dialog_clear_norefresh();
use_helpfile(NULL);
use_helpline(NULL);
dialog_textbox(file, fname, LINES, COLS);
dialog_clear_norefresh();
}
return 0;
}
char *
systemHelpFile(char *file, char *buf)
{
char *cp, *fname = NULL;
if (!file)
return NULL;
if ((cp = getenv("LANG")) != NULL) {
snprintf(buf, FILENAME_MAX, "help/%s/%s", cp, file);
if (file_readable(buf))
fname = buf;
else {
snprintf(buf, FILENAME_MAX, "/stand/help/%s/%s", cp, file);
if (file_readable(buf))
fname = buf;
}
}
else {
snprintf(buf, FILENAME_MAX, "help/en_US.ISO8859-1/%s", file);
if (file_readable(buf))
fname = buf;
else {
snprintf(buf, FILENAME_MAX, "/stand/help/en_US.ISO8859-1/%s",
file);
if (file_readable(buf))
fname = buf;
}
}
return fname;
}