379 lines
8.1 KiB
C
379 lines
8.1 KiB
C
/*
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* The new sysinstall program.
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*
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* This is probably the last program in the `sysinstall' line - the next
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* generation being essentially a complete rewrite.
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*
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* $Id: system.c,v 1.22 1995/05/20 13:24:35 jkh Exp $
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*
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* Jordan Hubbard
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*
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* My contributions are in the public domain.
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*
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* Parts of this file are also blatently stolen from Poul-Henning Kamp's
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* previous version of sysinstall, and as such fall under his "BEERWARE license"
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* so buy him a beer if you like it! Buy him a beer for me, too!
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* Heck, get him completely drunk and send me pictures! :-)
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*/
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#include "sysinstall.h"
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#include <signal.h>
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#include <sys/reboot.h>
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#include <machine/console.h>
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#include <sys/fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/wait.h>
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/*
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* Handle interrupt signals - this probably won't work in all cases
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* due to our having bogotified the internal state of dialog or curses,
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* but we'll give it a try.
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*/
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static void
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handle_intr(int sig)
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{
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if (!msgYesNo("Are you sure you want to abort the installation?"))
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systemShutdown();
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}
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/* Welcome the user to the system */
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void
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systemWelcome(void)
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{
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printf("Installation system initializing..\n");
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}
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/* Initialize system defaults */
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void
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systemInitialize(int argc, char **argv)
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{
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int i;
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signal(SIGINT, SIG_IGN);
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globalsInit();
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/* Are we running as init? */
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if (getpid() == 1) {
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setsid();
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if (argc > 1 && strchr(argv[1],'C')) {
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/* Kernel told us that we are on a CDROM root */
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close(0); open("/bootcd/dev/console", O_RDWR);
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close(1); dup(0);
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close(2); dup(0);
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CpioFD = open("/floppies/cpio.flp", O_RDONLY);
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OnCDROM = TRUE;
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chroot("/bootcd");
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} else {
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close(0); open("/dev/console", O_RDWR);
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close(1); dup(0);
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close(2); dup(0);
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}
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printf("%s running as init\n", argv[0]);
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ioctl(0, TIOCSCTTY, (char *)NULL);
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setlogin("root");
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setenv("PATH", "/stand:/mnt/bin:/mnt/sbin:/mnt/usr/sbin:/mnt/usr/bin", 1);
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setbuf(stdin, 0);
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setbuf(stdout, 0);
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setbuf(stderr, 0);
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}
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for(i = 0; i < 256; i++)
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default_scrnmap[i] = i;
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if (set_termcap() == -1) {
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printf("Can't find terminal entry\n");
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exit(-1);
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}
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/* XXX - libdialog has particularly bad return value checking */
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init_dialog();
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/* If we haven't crashed I guess dialog is running ! */
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DialogActive = TRUE;
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signal(SIGINT, handle_intr);
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}
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/* Close down and prepare to exit */
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void
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systemShutdown(void)
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{
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if (DialogActive) {
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end_dialog();
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DialogActive = FALSE;
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}
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/* REALLY exit! */
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if (getpid() == 1)
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reboot(RB_HALT);
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else
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exit(1);
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}
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/* Run some general command */
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int
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systemExecute(char *command)
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{
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int status;
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dialog_clear();
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dialog_update();
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end_dialog();
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DialogActive = FALSE;
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status = system(command);
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DialogActive = TRUE;
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dialog_clear();
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dialog_update();
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return status;
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}
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/* Find and execute a shell */
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int
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systemShellEscape(void)
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{
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char *sh = NULL;
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if (file_executable("/bin/sh"))
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sh = "/bin/sh";
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else if (file_executable("/stand/sh"))
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sh = "/stand/sh";
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else {
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msgWarn("No shell available, sorry!");
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return 1;
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}
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setenv("PS1", "freebsd% ", 1);
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dialog_clear();
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dialog_update();
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move(0, 0);
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standout();
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addstr("Type `exit' to leave this shell and continue installation");
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standend();
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refresh();
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end_dialog();
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DialogActive = FALSE;
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if (fork() == 0)
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execlp(sh, "-sh", 0);
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else
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wait(NULL);
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dialog_clear();
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DialogActive = TRUE;
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return 0;
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}
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/* Display a file in a filebox */
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int
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systemDisplayFile(char *file)
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{
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char *fname = NULL;
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char buf[FILENAME_MAX];
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WINDOW *w;
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fname = systemHelpFile(file, buf);
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if (!fname) {
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snprintf(buf, FILENAME_MAX, "The %s file is not provided on this particular floppy image.", file);
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use_helpfile(NULL);
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use_helpline(NULL);
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w = dupwin(newscr);
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dialog_mesgbox("Sorry!", buf, -1, -1);
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touchwin(w);
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wrefresh(w);
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delwin(w);
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return 1;
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}
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else {
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use_helpfile(NULL);
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use_helpline(NULL);
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w = dupwin(newscr);
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dialog_textbox(file, fname, LINES, COLS);
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touchwin(w);
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wrefresh(w);
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delwin(w);
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}
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return 0;
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}
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char *
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systemHelpFile(char *file, char *buf)
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{
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char *cp, *fname = NULL;
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if (!file)
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return NULL;
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if ((cp = getenv("LANG")) != NULL) {
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snprintf(buf, FILENAME_MAX, "help/%s/%s", cp, file);
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if (file_readable(buf))
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fname = buf;
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else {
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snprintf(buf, FILENAME_MAX, "/stand/help/%s/%s", cp, file);
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if (file_readable(buf))
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fname = buf;
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}
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}
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if (!fname) {
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snprintf(buf, FILENAME_MAX, "help/en_US.ISO8859-1/%s", file);
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if (file_readable(buf))
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fname = buf;
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else {
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snprintf(buf, FILENAME_MAX, "/stand/help/en_US.ISO8859-1/%s",
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file);
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if (file_readable(buf))
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fname = buf;
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}
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}
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return fname;
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}
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void
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systemChangeFont(const u_char font[])
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{
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if (OnVTY && ColorDisplay) {
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if (ioctl(0, PIO_FONT8x16, font) < 0)
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msgConfirm("Sorry! Unable to load font for %s", getenv("LANG"));
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}
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}
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void
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systemChangeLang(char *lang)
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{
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variable_set2("LANG", lang);
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}
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void
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systemChangeTerminal(char *color, const u_char c_term[],
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char *mono, const u_char m_term[])
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{
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extern void init_acs(void);
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if (OnVTY) {
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if (ColorDisplay) {
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setenv("TERM", color, 1);
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setenv("TERMCAP", c_term, 1);
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reset_shell_mode();
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setterm(color);
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init_acs();
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cbreak(); noecho();
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dialog_clear();
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}
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else {
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setenv("TERM", mono, 1);
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setenv("TERMCAP", m_term, 1);
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reset_shell_mode();
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setterm(mono);
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init_acs();
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cbreak(); noecho();
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dialog_clear();
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}
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}
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}
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void
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systemChangeScreenmap(const u_char newmap[])
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{
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if (OnVTY) {
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if (ioctl(0, PIO_SCRNMAP, newmap) < 0)
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msgConfirm("Sorry! Unable to load the screenmap for %s",
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getenv("LANG"));
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dialog_clear();
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}
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}
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/* Execute a command that is crunched into the same binary */
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int
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vsystem(char *fmt, ...)
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{
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va_list args;
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union wait pstat;
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pid_t pid;
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int omask;
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sig_t intsave, quitsave;
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char *cmd,*argv[100];
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int i;
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cmd = (char *)malloc(FILENAME_MAX);
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cmd[0] = '\0';
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va_start(args, fmt);
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vsnprintf(cmd, FILENAME_MAX, fmt, args);
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va_end(args);
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omask = sigblock(sigmask(SIGCHLD));
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msgDebug("Executing command `%s'\n", cmd);
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switch(pid = fork()) {
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case -1: /* error */
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(void)sigsetmask(omask);
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i = 127;
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case 0: /* child */
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(void)sigsetmask(omask);
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if (DebugFD != -1) {
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if (OnVTY)
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msgInfo("Command output is on debugging screen - type ALT-F2 to see it");
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dup2(DebugFD, 0);
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dup2(DebugFD, 1);
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dup2(DebugFD, 2);
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}
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i = 0;
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argv[i++] = "crunch";
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argv[i++] = "sh";
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argv[i++] = "-c";
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argv[i++] = cmd;
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argv[i] = 0;
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exit(crunched_main(i,argv));
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}
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intsave = signal(SIGINT, SIG_IGN);
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quitsave = signal(SIGQUIT, SIG_IGN);
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pid = waitpid(pid, (int *)&pstat, 0);
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(void)sigsetmask(omask);
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(void)signal(SIGINT, intsave);
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(void)signal(SIGQUIT, quitsave);
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i = (pid == -1) ? -1 : pstat.w_status;
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msgDebug("Command `%s' returns status of %d\n", cmd, i);
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free(cmd);
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return i;
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}
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/* Execute a system command, with varargs */
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int
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ssystem(char *fmt, ...)
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{
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va_list args;
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union wait pstat;
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pid_t pid;
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int omask;
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sig_t intsave, quitsave;
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char *cmd;
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int i;
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cmd = (char *)malloc(FILENAME_MAX);
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cmd[0] = '\0';
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va_start(args, fmt);
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vsnprintf(cmd, FILENAME_MAX, fmt, args);
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va_end(args);
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omask = sigblock(sigmask(SIGCHLD));
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msgDebug("Executing command `%s'\n", cmd);
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switch(pid = vfork()) {
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case -1: /* error */
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(void)sigsetmask(omask);
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i = 127;
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case 0: /* child */
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(void)sigsetmask(omask);
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if (DebugFD != -1) {
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if (OnVTY)
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msgInfo("Command output is on debugging screen - type ALT-F2 to see it");
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dup2(DebugFD, 0);
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dup2(DebugFD, 1);
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dup2(DebugFD, 2);
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}
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execl("/stand/sh", "sh", "-c", cmd, (char *)NULL);
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i = 127;
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}
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intsave = signal(SIGINT, SIG_IGN);
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quitsave = signal(SIGQUIT, SIG_IGN);
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pid = waitpid(pid, (int *)&pstat, 0);
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(void)sigsetmask(omask);
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(void)signal(SIGINT, intsave);
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(void)signal(SIGQUIT, quitsave);
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i = (pid == -1) ? -1 : pstat.w_status;
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msgDebug("Command `%s' returns status of %d\n", cmd, i);
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free(cmd);
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return i;
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}
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