/* * 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 1.17 1995/05/18 17:49:09 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 #include #include #include #include #include /* * Handle interrupt signals - this probably won't work in all cases * due to our having bogotified the internal state of dialog or curses, * but we'll give it a try. */ static void handle_intr(int sig) { if (!msgYesNo("Are you sure you want to abort the installation?")) systemShutdown(); } /* Welcome the user to the system */ void systemWelcome(void) { printf("Installation system initializing..\n"); } /* 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); } printf("%s running as init\n", argv[0]); ioctl(0, TIOCSCTTY, (char *)NULL); setlogin("root"); setenv("PATH", "/stand:/mnt/bin:/mnt/sbin:/mnt/usr/sbin:/mnt/usr/bin", 1); setbuf(stdin, 0); setbuf(stdout, 0); setbuf(stderr, 0); } if (set_termcap() == -1) { printf("Can't find terminal entry\n"); exit(-1); } /* 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]; WINDOW *w; 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); w = dupwin(newscr); dialog_mesgbox("Sorry!", buf, -1, -1); touchwin(w); wrefresh(w); delwin(w); return 1; } else { use_helpfile(NULL); use_helpline(NULL); w = dupwin(newscr); dialog_textbox(file, fname, LINES, COLS); touchwin(w); wrefresh(w); delwin(w); } 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; } } if (!fname) { 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; } void systemChangeFont(const u_char font[]) { if (OnVTY && ColorDisplay) { if (ioctl(0, PIO_FONT8x16, font) < 0) msgConfirm("Sorry! Unable to load font for %s", getenv("LANG")); } } void systemChangeLang(char *lang) { variable_set2("LANG", lang); } void systemChangeTerminal(char *color, const u_char c_term[], char *mono, const u_char m_term[]) { if (OnVTY) { if (ColorDisplay) { setenv("TERM", color, 1); setenv("TERMCAP", c_term, 1); reset_shell_mode(); setterm(color); init_acs(); cbreak(); noecho(); dialog_clear(); } else { setenv("TERM", mono, 1); setenv("TERMCAP", m_term, 1); reset_shell_mode(); setterm(mono); init_acs(); cbreak(); noecho(); dialog_clear(); } } } /* Execute a system command, with varargs */ int vsystem(char *fmt, ...) { va_list args; union wait pstat; pid_t pid; int omask; sig_t intsave, quitsave; char *cmd; int i; cmd = (char *)malloc(FILENAME_MAX); cmd[0] = '\0'; va_start(args, fmt); vsnprintf(cmd, FILENAME_MAX, fmt, args); va_end(args); omask = sigblock(sigmask(SIGCHLD)); msgNotify("Executing command: %s", cmd); switch(pid = vfork()) { case -1: /* error */ (void)sigsetmask(omask); i = 127; case 0: /* child */ (void)sigsetmask(omask); if (DebugFD != -1) { msgInfo("Command output is on debugging screen - type ALT-F2 to see it"); dup2(DebugFD, 0); dup2(DebugFD, 1); dup2(DebugFD, 2); } execl("/stand/sh", "sh", "-c", cmd, (char *)NULL); i = 127; } intsave = signal(SIGINT, SIG_IGN); quitsave = signal(SIGQUIT, SIG_IGN); pid = waitpid(pid, (int *)&pstat, 0); (void)sigsetmask(omask); (void)signal(SIGINT, intsave); (void)signal(SIGQUIT, quitsave); i = (pid == -1) ? -1 : pstat.w_status; msgDebug("Command `%s' returns status of %d\n", cmd, i); free(cmd); return i; }