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Diffstat (limited to 'release/sysinstall/system.c')
| -rw-r--r-- | release/sysinstall/system.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/release/sysinstall/system.c b/release/sysinstall/system.c new file mode 100644 index 0000000..880dff9 --- /dev/null +++ b/release/sysinstall/system.c @@ -0,0 +1,264 @@ +/* + * 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 1.44 1995/06/11 19:30:10 rgrimes 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! + * Heck, get him completely drunk and send me pictures! :-) + */ + +#include "sysinstall.h" +#include <signal.h> +#include <sys/reboot.h> +#include <machine/console.h> +#include <sys/fcntl.h> +#include <sys/ioctl.h> +#include <sys/wait.h> + +/* + * 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(); +} + +/* Initialize system defaults */ +void +systemInitialize(int argc, char **argv) +{ + int i; + + signal(SIGINT, SIG_IGN); + globalsInit(); + + /* Are we running as init? */ + if (getpid() == 1) { + setsid(); + close(0); open("/dev/ttyv0", O_RDWR); + close(1); dup(0); + close(2); dup(0); + printf("%s running as init\n", argv[0]); + + i = ioctl(0, TIOCSCTTY, (char *)NULL); + setlogin("root"); + setenv("PATH", "/stand:/bin:/sbin:/usr/sbin:/usr/bin:/mnt/bin:/mnt/sbin:/mnt/usr/sbin:/mnt/usr/bin:/usr/X11R6/bin", 1); + setbuf(stdin, 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 (RunningAsInit) { + /* Put the console back */ + ioctl(0, VT_ACTIVATE, 2); + 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; +} + +/* 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) +{ + if (!file) + return NULL; + + snprintf(buf, FILENAME_MAX, "/stand/help/%s.hlp", file); + if (file_readable(buf)) + return buf; + return NULL; +} + +void +systemChangeTerminal(char *color, const u_char c_term[], + char *mono, const u_char m_term[]) +{ + extern void init_acs(void); + + if (OnVTY) { + if (ColorDisplay) { + setenv("TERM", color, 1); + setenv("TERMCAP", c_term, 1); + reset_shell_mode(); + setterm(color); + init_acs(); + cbreak(); noecho(); + } + else { + setenv("TERM", mono, 1); + setenv("TERMCAP", m_term, 1); + reset_shell_mode(); + setterm(mono); + init_acs(); + cbreak(); noecho(); + } + } + clear(); + refresh(); + dialog_clear(); +} + +int +vsystem(char *fmt, ...) +{ + va_list args; + int pstat; + pid_t pid; + int omask; + sig_t intsave, quitsave; + char *cmd,*p; + int i,magic=0; + + cmd = (char *)malloc(FILENAME_MAX); + cmd[0] = '\0'; + va_start(args, fmt); + vsnprintf(cmd, FILENAME_MAX, fmt, args); + va_end(args); + + /* Find out if this command needs the wizardry of the shell */ + for (p="<>|'`=\"()" ; *p; p++) + if (strchr(cmd, *p)) + magic++; + omask = sigblock(sigmask(SIGCHLD)); + if (isDebug()) + msgDebug("Executing command `%s' (Magic=%d)\n", cmd, magic); + switch(pid = fork()) { + case -1: /* error */ + (void)sigsetmask(omask); + i = 127; + + case 0: /* child */ + (void)sigsetmask(omask); + if (DebugFD != -1) { + if (OnVTY && isDebug()) + msgInfo("Command output is on debugging screen - type ALT-F2 to see it"); + dup2(DebugFD, 0); + dup2(DebugFD, 1); + dup2(DebugFD, 2); + } +#ifdef NOT_A_GOOD_IDEA_CRUNCHED_BINARY + if (magic) { + char *argv[100]; + i = 0; + argv[i++] = "crunch"; + argv[i++] = "sh"; + argv[i++] = "-c"; + argv[i++] = cmd; + argv[i] = 0; + exit(crunched_main(i,argv)); + } else { + char *argv[100]; + i = 0; + argv[i++] = "crunch"; + while (cmd && *cmd) { + argv[i] = strsep(&cmd," \t"); + if (*argv[i]) + i++; + } + argv[i] = 0; + if (crunched_here(argv[1])) + exit(crunched_main(i,argv)); + else + execvp(argv[1],argv+1); + kill(getpid(),9); + } +#else /* !CRUNCHED_BINARY */ + execl("/stand/sh", "sh", "-c", cmd, (char *)NULL); + kill(getpid(),9); +#endif /* CRUNCHED_BINARY */ + } + intsave = signal(SIGINT, SIG_IGN); + quitsave = signal(SIGQUIT, SIG_IGN); + pid = waitpid(pid, &pstat, 0); + (void)sigsetmask(omask); + (void)signal(SIGINT, intsave); + (void)signal(SIGQUIT, quitsave); + i = (pid == -1) ? -1 : WEXITSTATUS(pstat); + if (isDebug()) + msgDebug("Command `%s' returns status of %d\n", cmd, i); + free(cmd); + return i; +} |
