mirror of
https://git.FreeBSD.org/src.git
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305 lines
6.8 KiB
C
305 lines
6.8 KiB
C
/*
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* $FreeBSD$
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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 <signal.h>
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#include <termios.h>
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#include <sys/param.h>
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#include <sys/reboot.h>
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#include <sys/consio.h>
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#include <sys/fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <ufs/ufs/ufsmount.h>
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#include "sade.h"
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/* Where we stick our temporary expanded doc file */
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#define DOC_TMP_DIR "/tmp/.doc"
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#define DOC_TMP_FILE "/tmp/.doc/doc.tmp"
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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 int
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intr_continue(dialogMenuItem *self)
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{
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return DITEM_LEAVE_MENU;
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}
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static int
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intr_restart(dialogMenuItem *self)
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{
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int ret, fd, fdmax;
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free_variables();
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fdmax = getdtablesize();
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for (fd = 3; fd < fdmax; fd++)
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close(fd);
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ret = execl(StartName, StartName, "-restart", (char *)NULL);
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msgDebug("execl failed (%s)\n", strerror(errno));
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/* NOTREACHED */
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return -1;
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}
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static dialogMenuItem intrmenu[] = {
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{ "Restart", "Restart the program", intr_restart },
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{ "Continue", "Continue without restarting", intr_continue },
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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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WINDOW *save = savescr();
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dialog_vars.help_line = NULL;
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dialog_vars.help_file = NULL;
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if (OnVTY) {
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ioctl(0, VT_ACTIVATE, 1); /* Switch back */
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msgInfo(NULL);
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}
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(void)xdialog_menu("Installation interrupt",
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"Do you want to abort the installation?",
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-1, -1, 2, 2, intrmenu);
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restorescr(save);
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}
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/* Expand a file into a convenient location, nuking it each time */
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static char *
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expand(char *fname)
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{
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char *gunzip = "/usr/bin/gunzip";
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if (!directory_exists(DOC_TMP_DIR)) {
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Mkdir(DOC_TMP_DIR);
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if (chown(DOC_TMP_DIR, 0, 0) < 0)
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return NULL;
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if (chmod(DOC_TMP_DIR, S_IRWXU) < 0)
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return NULL;
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}
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else
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unlink(DOC_TMP_FILE);
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if (!file_readable(fname) || vsystem("%s < %s > %s", gunzip, fname, DOC_TMP_FILE))
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return NULL;
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return DOC_TMP_FILE;
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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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size_t i;
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int boothowto;
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sigset_t signalset;
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signal(SIGINT, SIG_IGN);
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globalsInit();
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i = sizeof(boothowto);
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if (!sysctlbyname("debug.boothowto", &boothowto, &i, NULL, 0) &&
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(i == sizeof(boothowto)) && (boothowto & RB_VERBOSE))
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variable_set2(VAR_DEBUG, "YES", 0);
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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(stdin, stdout);
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/* If we haven't crashed I guess dialog is running ! */
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DialogActive = TRUE;
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/* Make sure HOME is set for those utilities that need it */
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signal(SIGINT, handle_intr);
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/*
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* Make sure we can be interrupted even if we were re-executed
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* from an interrupt.
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*/
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sigemptyset(&signalset);
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sigaddset(&signalset, SIGINT);
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sigprocmask(SIG_UNBLOCK, &signalset, NULL);
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(void)vsystem("rm -rf %s", DOC_TMP_DIR);
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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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struct termios foo;
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WINDOW *w = savescr();
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dlg_clear();
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end_dialog();
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DialogActive = FALSE;
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if (tcgetattr(0, &foo) != -1) {
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foo.c_cc[VERASE] = '\010';
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tcsetattr(0, TCSANOW, &foo);
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}
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if (!Fake)
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status = system(command);
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else {
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status = 0;
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msgDebug("systemExecute: Faked execution of `%s'\n", command);
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}
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DialogActive = TRUE;
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restorescr(w);
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return status;
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}
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/* suspend/resume libdialog/curses screen */
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static WINDOW *oldW;
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void
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systemSuspendDialog(void)
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{
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oldW = savescr();
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dlg_clear();
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end_dialog();
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DialogActive = FALSE;
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}
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void
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systemResumeDialog(void)
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{
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DialogActive = TRUE;
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restorescr(oldW);
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}
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/* Display a help file in a filebox */
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int
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systemDisplayHelp(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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int ret = 0;
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WINDOW *w = savescr();
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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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dialog_vars.help_line = NULL;
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dialog_vars.help_file = NULL;
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xdialog_msgbox("Sorry!", buf, -1, -1, 1);
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ret = 1;
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}
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else {
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dialog_vars.help_line = NULL;
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dialog_vars.help_file = NULL;
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dialog_textbox(file, fname, LINES, COLS);
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}
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restorescr(w);
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return ret;
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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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if (!file)
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return NULL;
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if (file[0] == '/')
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return file;
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snprintf(buf, FILENAME_MAX, "/stand/help/%s.hlp.gz", file);
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if (file_readable(buf))
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return expand(buf);
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snprintf(buf, FILENAME_MAX, "/stand/help/%s.hlp", file);
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if (file_readable(buf))
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return expand(buf);
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snprintf(buf, FILENAME_MAX, "/stand/help/%s.TXT.gz", file);
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if (file_readable(buf))
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return expand(buf);
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snprintf(buf, FILENAME_MAX, "/stand/help/%s.TXT", file);
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if (file_readable(buf))
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return expand(buf);
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snprintf(buf, FILENAME_MAX, "/usr/src/usr.sbin/%s/help/%s.hlp", ProgName,
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file);
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if (file_readable(buf))
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return buf;
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snprintf(buf, FILENAME_MAX, "/usr/src/usr.sbin/%s/help/%s.TXT", ProgName,
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file);
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if (file_readable(buf))
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return buf;
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return NULL;
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}
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int
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vsystem(const char *fmt, ...)
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{
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va_list args;
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int 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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struct stat sb;
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cmd = (char *)alloca(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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if (Fake) {
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msgDebug("vsystem: Faked execution of `%s'\n", cmd);
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return 0;
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}
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if (isDebug())
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msgDebug("Executing command `%s'\n", cmd);
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pid = fork();
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if (pid == -1) {
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(void)sigsetmask(omask);
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i = 127;
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}
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else if (!pid) { /* Junior */
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(void)sigsetmask(omask);
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if (DebugFD != -1) {
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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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else {
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close(1); open("/dev/null", O_WRONLY);
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dup2(1, 2);
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}
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if (stat("/stand/sh", &sb) == 0)
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execl("/stand/sh", "/stand/sh", "-c", cmd, (char *)NULL);
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else
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execl("/bin/sh", "/bin/sh", "-c", cmd, (char *)NULL);
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exit(1);
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}
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else {
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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, &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 : WEXITSTATUS(pstat);
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if (isDebug())
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msgDebug("Command `%s' returns status of %d\n", cmd, i);
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}
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return i;
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}
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