/* * $Xorg: xconsole.c,v 1.5 2001/02/09 02:05:40 xorgcvs Exp $ * Copyright 1990, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. * * Author: Keith Packard, MIT X Consortium */ /* $XFree86: xc/programs/xconsole/xconsole.c,v 3.31tsi Exp $ */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern char *_XawTextGetSTRING(TextWidget ctx, XawTextPosition left, XawTextPosition right); #include #include #include #ifndef _POSIX_SOURCE #define _POSIX_SOURCE #include #undef _POSIX_SOURCE #else #include #endif #include #include #include #ifdef HAS_OPENPTY # ifdef HAS_UTIL_H # include # endif # ifdef HAS_PTY_H # include # endif #endif #ifdef USE_PRIVSEP # include #endif extern int priv_init(uid_t, gid_t); extern int priv_openpty(int *, int *); extern int priv_set_console(int); /* Fix ISC brain damage. When using gcc fdopen isn't declared in . */ #if defined(ISC) && __STDC__ && !defined(ISC30) extern FILE *fdopen(int, char const *); #endif static void inputReady(XtPointer w, int *source, XtInputId *id); static long TextLength(Widget w); static void TextReplace(Widget w, int start, int end, XawTextBlock *block); static void TextAppend(Widget w, char *s, int len); static void TextInsert(Widget w, char *s, int len); static Bool ExceededMaxLines(Widget w); static void ScrollLine(Widget w); static Widget top, text; static XtInputId input_id; static FILE *input; static Boolean regularFile = FALSE; static Boolean notified; static Boolean iconified; static Atom wm_delete_window; static Atom mit_console; #define MIT_CONSOLE_LEN 12 #define MIT_CONSOLE "MIT_CONSOLE_" static char mit_console_name[255 + MIT_CONSOLE_LEN + 1] = MIT_CONSOLE; static struct _app_resources { char *file; Boolean stripNonprint; Boolean notify; Boolean daemon; Boolean verbose; Boolean exitOnFail; int saveLines; } app_resources; #define Offset(field) XtOffsetOf(struct _app_resources, field) static XtResource resources[] = { {"file", "File", XtRString, sizeof (char *), Offset (file), XtRString, "console" }, {"notify", "Notify", XtRBoolean, sizeof (Boolean), Offset (notify), XtRImmediate, (XtPointer)True }, {"stripNonprint", "StripNonprint", XtRBoolean, sizeof (Boolean), Offset (stripNonprint), XtRImmediate, (XtPointer)True }, {"daemon", "Daemon", XtRBoolean, sizeof (Boolean), Offset (daemon), XtRImmediate, (XtPointer)False}, {"verbose", "Verbose", XtRBoolean, sizeof (Boolean), Offset (verbose),XtRImmediate, (XtPointer)False}, {"exitOnFail", "ExitOnFail", XtRBoolean, sizeof (Boolean), Offset (exitOnFail),XtRImmediate, (XtPointer)False}, {"saveLines", "SaveLines", XtRInt, sizeof (int), Offset (saveLines), XtRImmediate, (XtPointer) 0 }, }; #undef Offset static XrmOptionDescRec options[] = { {"-file", "*file", XrmoptionSepArg, NULL}, {"-notify", "*notify", XrmoptionNoArg, "TRUE"}, {"-nonotify", "*notify", XrmoptionNoArg, "FALSE"}, {"-daemon", "*daemon", XrmoptionNoArg, "TRUE"}, {"-verbose", "*verbose", XrmoptionNoArg, "TRUE"}, {"-exitOnFail", "*exitOnFail", XrmoptionNoArg, "TRUE"}, {"-saveLines", "*saveLines", XrmoptionSepArg, NULL}, }; #ifdef ultrix #define USE_FILE #define FILE_NAME "/dev/xcons" #endif #ifdef __UNIXOS2__ #define USE_FILE #define FILE_NAME "/dev/console$" #define INCL_DOSFILEMGR #define INCL_DOSDEVIOCTL #include #endif #ifdef linux #define USE_FILE #define FILE_NAME "/dev/xconsole" # if defined (__GLIBC__) && ((__GLIBC__ > 2) || (__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 1)) /* * Linux distribution based on glibc 2.1 and higher should use * devpts. This is the fallback if open file FILE_NAME fails. * */ # define USE_PTS # endif #endif #if defined(_AIX) # define USE_PTS #endif #if !defined (USE_FILE) || defined (linux) # include # ifdef hpux # include # endif # if defined (SVR4) || defined (USE_PTS) # include # include /* for I_PUSH */ # ifdef sun # include # endif # endif # if defined(TIOCCONS) || defined(SRIOCSREDIR) || defined(Lynx) # define USE_PTY static int tty_fd, pty_fd; static char ttydev[64], ptydev[64]; # endif #endif #if (defined(SVR4) && !defined(sun)) || (defined(SYSV) && defined(i386)) #define USE_OSM #include #endif #ifdef USE_PTY static int get_pty(int *pty, int *tty, char *ttydev, char *ptydev); #endif #ifdef USE_OSM static FILE *osm_pipe(void); static int child_pid; #endif /* Copied from xterm/ptyx.h */ #ifndef PTYCHAR1 #ifdef __hpux #define PTYCHAR1 "zyxwvutsrqp" #else /* !__hpux */ #ifdef __UNIXOS2__ #define PTYCHAR1 "pq" #else #define PTYCHAR1 "pqrstuvwxyzPQRSTUVWXYZ" #endif /* !__UNIXOS2__ */ #endif /* !__hpux */ #endif /* !PTYCHAR1 */ #ifndef PTYCHAR2 #ifdef __hpux #define PTYCHAR2 "fedcba9876543210" #else /* !__hpux */ #ifdef __FreeBSD__ #define PTYCHAR2 "0123456789abcdefghijklmnopqrstuv" #else /* !__FreeBSD__ */ #define PTYCHAR2 "0123456789abcdef" #endif /* !__FreeBSD__ */ #endif /* !__hpux */ #endif /* !PTYCHAR2 */ #ifdef Lynx static void RestoreConsole(void) { int fd; if ((fd = open("/dev/con", O_RDONLY)) >= 0) newconsole(fd); } #endif static void OpenConsole(void) { input = 0; if (app_resources.file) { if (!strcmp (app_resources.file, "console")) { /* must be owner and have read/write permission */ #if !defined(__NetBSD__) && !defined(__OpenBSD__) && !defined(Lynx) && !defined(__UNIXOS2__) struct stat sbuf; # if !defined (linux) if (!stat("/dev/console", &sbuf) && (sbuf.st_uid == getuid()) && !access("/dev/console", R_OK|W_OK)) # endif #endif { #ifdef USE_FILE # ifdef linux if (!stat(FILE_NAME, &sbuf)) # endif input = fopen (FILE_NAME, "r"); # ifdef __UNIXOS2__ if (input) { ULONG arg = 1,arglen; APIRET rc; if ((rc=DosDevIOCtl(fileno(input), 0x76,0x4d, &arg, sizeof(arg), &arglen, NULL, 0, NULL)) != 0) { fclose(input); input = 0; } } # endif #endif #ifdef USE_PTY if (!input && get_pty (&pty_fd, &tty_fd, ttydev, ptydev) == 0) { # ifdef TIOCCONS int on = 1; #ifdef USE_PRIVSEP if (priv_set_console(tty_fd) != -1) input = fdopen (pty_fd, "r"); #else if (ioctl (tty_fd, TIOCCONS, (char *) &on) != -1) input = fdopen (pty_fd, "r"); #endif # else # ifndef Lynx int consfd = open("/dev/console", O_RDONLY); if (consfd >= 0) { if (ioctl(consfd, SRIOCSREDIR, tty_fd) != -1) input = fdopen (pty_fd, "r"); close(consfd); } # else if (newconsole(tty_fd) < 0) perror("newconsole"); else { input = fdopen (pty_fd, "r"); atexit(RestoreConsole); } # endif # endif } #endif /* USE_PTY */ } #ifdef USE_OSM /* Don't have to be owner of /dev/console when using /dev/osm. */ if (!input) input = osm_pipe(); #endif if (input && app_resources.verbose) { char *hostname; TextAppend (text, "Console log for ", 16); hostname = mit_console_name + MIT_CONSOLE_LEN; TextAppend (text, hostname, strlen (hostname)); TextAppend (text, "\n", 1); } } else { struct stat sbuf; regularFile = FALSE; if (access(app_resources.file, R_OK) == 0) { input = fopen (app_resources.file, "r"); if (input) if (!stat(app_resources.file, &sbuf) && S_ISREG( sbuf.st_mode ) ) regularFile = TRUE; } } if (!input) { if (app_resources.exitOnFail) exit(0); TextAppend (text, "Couldn't open ", 14); TextAppend (text, app_resources.file, strlen (app_resources.file)); TextAppend (text, "\n", 1); } } else input = stdin; if (input) { input_id = XtAddInput (fileno (input), (XtPointer) XtInputReadMask, inputReady, (XtPointer) text); } } static void CloseConsole (void) { if (input) { XtRemoveInput (input_id); fclose (input); } #ifdef USE_PTY close (tty_fd); #endif } #ifdef USE_OSM static void KillChild(int sig) { if (child_pid > 0) kill(child_pid, SIGTERM); _exit(0); } #endif /*ARGSUSED*/ static void Quit(Widget widget, XEvent *event, String *params, Cardinal *num_params) { #ifdef USE_OSM if (child_pid > 0) kill(child_pid, SIGTERM); #endif exit (0); } #ifdef USE_OSM static int (*ioerror)(Display *); static int IOError(Display *dpy) { if (child_pid > 0) kill(child_pid, SIGTERM); return (*ioerror)(dpy); } #endif static void Notify(void) { Arg arglist[1]; char *oldName; char *newName; if (!iconified || !app_resources.notify || notified) return; XtSetArg (arglist[0], XtNiconName, &oldName); XtGetValues (top, arglist, 1); newName = malloc (strlen (oldName) + 3); if (!newName) return; sprintf (newName, "%s *", oldName); XtSetArg (arglist[0], XtNiconName, newName); XtSetValues (top, arglist, 1); free (newName); notified = True; } /*ARGSUSED*/ static void Deiconified(Widget widget, XEvent *event, String *params, Cardinal *num_params) { Arg arglist[1]; char *oldName; char *newName; int oldlen; iconified = False; if (!app_resources.notify || !notified) return; XtSetArg (arglist[0], XtNiconName, &oldName); XtGetValues (top, arglist, 1); oldlen = strlen (oldName); if (oldlen >= 2) { newName = malloc (oldlen - 1); if (!newName) return; strncpy (newName, oldName, oldlen - 2); newName[oldlen - 2] = '\0'; XtSetArg (arglist[0], XtNiconName, newName); XtSetValues (top, arglist, 1); free (newName); } notified = False; } /*ARGSUSED*/ static void Iconified(Widget widget, XEvent *event, String *params, Cardinal *num_params) { iconified = True; } /*ARGSUSED*/ static void Clear(Widget widget, XEvent *event, String *params, Cardinal *num_params) { long last; XawTextBlock block; last = TextLength (text); block.ptr = ""; block.firstPos = 0; block.length = 0; block.format = FMT8BIT; TextReplace (text, 0, last, &block); } static XtActionsRec actions[] = { { "Quit", Quit }, { "Iconified", Iconified }, { "Deiconified", Deiconified }, { "Clear", Clear }, }; static void stripNonprint(char *b) { char *c; c = b; while (*b) { if (isprint (*b) || (isspace (*b) && *b != '\r')) { if (c != b) *c = *b; ++c; } ++b; } *c = '\0'; } static void inputReady(XtPointer w, int *source, XtInputId *id) { char buffer[1025]; int n; n = read (*source, buffer, sizeof (buffer) - 1); if (n <= 0) { if (app_resources.file && regularFile && n == 0) { if (XPending(XtDisplay(w))) return; sleep(1); return; } fclose (input); XtRemoveInput (*id); /* try to reopen if pipe; this can be caused by syslog restart */ if (app_resources.file && !regularFile && n == 0) { OpenConsole(); } } else { Notify(); buffer[n] = '\0'; if (app_resources.stripNonprint) { stripNonprint (buffer); n = strlen (buffer); } TextAppend ((Widget) text, buffer, n); } } static Boolean ConvertSelection(Widget w, Atom *selection, Atom *target, Atom *type, XtPointer *value, unsigned long *length, int *format) { Display* d = XtDisplay(w); XSelectionRequestEvent* req = XtGetSelectionRequest(w, *selection, (XtRequestId)NULL); if (*target == XA_TARGETS(d)) { Atom* targetP; Atom* std_targets; unsigned long std_length; XmuConvertStandardSelection(w, req->time, selection, target, type, (XPointer *)&std_targets, &std_length, format); *value = (XtPointer)XtMalloc(sizeof(Atom)*(std_length + 5)); targetP = *(Atom**)value; *targetP++ = XA_STRING; *targetP++ = XA_TEXT(d); *targetP++ = XA_LENGTH(d); *targetP++ = XA_LIST_LENGTH(d); *targetP++ = XA_CHARACTER_POSITION(d); *length = std_length + (targetP - (*(Atom **) value)); memmove( (char*)targetP, (char*)std_targets, sizeof(Atom)*std_length); XtFree((char*)std_targets); *type = XA_ATOM; *format = 32; return True; } if (*target == XA_LIST_LENGTH(d) || *target == XA_LENGTH(d)) { long * temp; temp = (long *) XtMalloc(sizeof(long)); if (*target == XA_LIST_LENGTH(d)) *temp = 1L; else /* *target == XA_LENGTH(d) */ *temp = (long) TextLength (text); *value = (XtPointer) temp; *type = XA_INTEGER; *length = 1L; *format = 32; return True; } if (*target == XA_CHARACTER_POSITION(d)) { long * temp; temp = (long *) XtMalloc(2 * sizeof(long)); temp[0] = (long) 0; temp[1] = TextLength (text); *value = (XtPointer) temp; *type = XA_SPAN(d); *length = 2L; *format = 32; return True; } if (*target == XA_STRING || *target == XA_TEXT(d) || *target == XA_COMPOUND_TEXT(d)) { if (*target == XA_COMPOUND_TEXT(d)) *type = *target; else *type = XA_STRING; *length = TextLength (text); *value = (XtPointer)_XawTextGetSTRING((TextWidget) text, 0, *length); *format = 8; /* * Drop our connection to the file; the new console program * will open as soon as it receives the selection contents; there * is a small window where console output will not be redirected, * but I see no way of avoiding that without having two programs * attempt to redirect console output at the same time, which seems * worse */ CloseConsole (); return True; } if (XmuConvertStandardSelection(w, req->time, selection, target, type, (XPointer *)value, length, format)) return True; return False; } static void LoseSelection(Widget w, Atom *selection) { Quit (w, (XEvent*)NULL, (String*)NULL, (Cardinal*)NULL); } /*ARGSUSED*/ static void InsertSelection(Widget w, XtPointer client_data, Atom *selection, Atom *type, XtPointer value, unsigned long *length, int *format) { if (*type != XT_CONVERT_FAIL) TextInsert (text, (char *) value, *length); XtOwnSelection(top, mit_console, CurrentTime, ConvertSelection, LoseSelection, NULL); OpenConsole (); } int main(int argc, char *argv[]) { Arg arglist[10]; Cardinal num_args; #ifdef USE_PRIVSEP struct passwd *pw; #endif XtSetLanguageProc(NULL,NULL,NULL); top = XtInitialize ("xconsole", "XConsole", options, XtNumber (options), &argc, argv); XtGetApplicationResources (top, (XtPointer)&app_resources, resources, XtNumber (resources), NULL, 0); #ifdef USE_PRIVSEP /* Revoke privileges if any */ if (getuid() == 0) { /* Running as root */ pw = getpwnam(XCONSOLE_USER); if (!pw) { fprintf(stderr, "%s user not found\n", XCONSOLE_USER); exit(2); } if (priv_init(pw->pw_uid, pw->pw_gid) < 0) { fprintf(stderr, "priv_init failed\n"); exit(2); } } #endif if (app_resources.daemon) if (fork ()) exit (0); XtAddActions (actions, XtNumber (actions)); text = XtCreateManagedWidget ("text", asciiTextWidgetClass, top, NULL, 0); XtRealizeWidget (top); num_args = 0; XtSetArg(arglist[num_args], XtNiconic, &iconified); num_args++; XtGetValues(top, arglist, num_args); if (iconified) Iconified((Widget)NULL, (XEvent*)NULL, (String*)NULL, (Cardinal*)NULL); else Deiconified((Widget)NULL,(XEvent*)NULL,(String*)NULL,(Cardinal*)NULL); wm_delete_window = XInternAtom(XtDisplay(top), "WM_DELETE_WINDOW", False); (void) XSetWMProtocols (XtDisplay(top), XtWindow(top), &wm_delete_window, 1); XmuGetHostname (mit_console_name + MIT_CONSOLE_LEN, 255); mit_console = XInternAtom(XtDisplay(top), mit_console_name, False); if (XGetSelectionOwner (XtDisplay (top), mit_console)) { XtGetSelectionValue(top, mit_console, XA_STRING, InsertSelection, NULL, CurrentTime); } else { XtOwnSelection(top, mit_console, CurrentTime, ConvertSelection, LoseSelection, NULL); OpenConsole (); } #ifdef USE_OSM ioerror = XSetIOErrorHandler(IOError); #endif XtMainLoop (); return 0; } static long TextLength(Widget w) { return XawTextSourceScan (XawTextGetSource (w), (XawTextPosition) 0, XawstAll, XawsdRight, 1, TRUE); } static void TextReplace(Widget w, int start, int end, XawTextBlock *block) { Arg arg; Widget source; XawTextEditType edit_mode; source = XawTextGetSource (w); XtSetArg (arg, XtNeditType, &edit_mode); XtGetValues (source, &arg, ONE); XtSetArg (arg, XtNeditType, XawtextEdit); XtSetValues (source, &arg, ONE); XawTextReplace (w, start, end, block); XtSetArg (arg, XtNeditType, edit_mode); XtSetValues (source, &arg, ONE); } static void TextAppend(Widget w, char *s, int len) { long last, current; XawTextBlock block; current = XawTextGetInsertionPoint (w); last = TextLength (w); block.ptr = s; block.firstPos = 0; block.length = len; block.format = FMT8BIT; /* * If saveLines is 1, just replace the entire contents of the widget * each time, so the test in ExceededMaxLines() isn't fooled. */ if (app_resources.saveLines == 1) TextReplace (w, 0, last, &block); else TextReplace (w, last, last, &block); if (current == last) XawTextSetInsertionPoint (w, last + block.length); if (ExceededMaxLines(w)) ScrollLine(w); } static void TextInsert(Widget w, char *s, int len) { XawTextBlock block; long current; current = XawTextGetInsertionPoint (w); block.ptr = s; block.firstPos = 0; block.length = len; block.format = FMT8BIT; TextReplace (w, 0, 0, &block); if (current == 0) XawTextSetInsertionPoint (w, len); if (ExceededMaxLines(w)) ScrollLine(w); } static Bool ExceededMaxLines(Widget w) { XawTextPosition end_of_last_line; Bool retval = False; if (app_resources.saveLines > 0) { /* * XawTextSourceScan() will return the end of the widget if it cannot * find what it is searching for. */ end_of_last_line = XawTextSourceScan (XawTextGetSource (w), (XawTextPosition) 0, XawstEOL, XawsdRight, app_resources.saveLines, TRUE); if (TextLength(w) > end_of_last_line) retval = True; else retval = False; } else retval = False; return retval; } static void ScrollLine(Widget w) { XawTextPosition firstnewline; XawTextBlock block; /* * This is pretty inefficient but should work well enough unless the * console device is getting totally spammed. Generally, new lines * only come in one at a time anyway. */ firstnewline = XawTextSourceScan (XawTextGetSource (w), (XawTextPosition) 0, XawstEOL, XawsdRight, 1, TRUE); block.ptr = ""; block.firstPos = 0; block.length = 0; block.format = FMT8BIT; TextReplace (w, 0, firstnewline, &block); } #ifdef USE_PTY /* * This function opens up a pty master and stuffs its value into pty. * If it finds one, it returns a value of 0. If it does not find one, * it returns a value of !0. This routine is designed to be re-entrant, * so that if a pty master is found and later, we find that the slave * has problems, we can re-enter this function and get another one. */ static int get_pty(int *pty, int *tty, char *ttydev, char *ptydev) { #ifdef USE_PRIVSEP if (priv_openpty(pty, tty) < 0) { return 1; } return 0; #elif HAS_OPENPTY if (openpty(pty, tty, NULL, NULL, NULL) == -1) { return 1; } return 0; #elif defined (SVR4) || defined (USE_PTS) #if defined (_AIX) if ((*pty = open ("/dev/ptc", O_RDWR)) < 0) #else if ((*pty = open ("/dev/ptmx", O_RDWR)) < 0) #endif return 1; grantpt(*pty); unlockpt(*pty); strcpy(ttydev, (char *)ptsname(*pty)); if ((*tty = open(ttydev, O_RDWR)) >= 0) { (void)ioctl(*tty, I_PUSH, "ttcompat"); return 0; } if (*pty >= 0) close (*pty); #else /* !SVR4, need lots of code */ #ifdef USE_GET_PSEUDOTTY if ((*pty = getpseudotty (&ttydev, &ptydev)) >= 0 && (*tty = open (ttydev, O_RDWR)) >= 0) return 0; if (*pty >= 0) close (*pty); #else static int devindex, letter = 0; #if defined(umips) && defined (SYSTYPE_SYSV) struct stat fstat_buf; *pty = open ("/dev/ptc", O_RDWR); if (*pty < 0 || (fstat (*pty, &fstat_buf)) < 0) { return(1); } sprintf (ttydev, "/dev/ttyq%d", minor(fstat_buf.st_rdev)); sprintf (ptydev, "/dev/ptyq%d", minor(fstat_buf.st_rdev)); if ((*tty = open (ttydev, O_RDWR)) >= 0) { /* got one! */ return(0); } close (*pty); #else /* not (umips && SYSTYPE_SYSV) */ #ifdef CRAY for (; devindex < 256; devindex++) { sprintf (ttydev, "/dev/ttyp%03d", devindex); sprintf (ptydev, "/dev/pty/%03d", devindex); if ((*pty = open (ptydev, O_RDWR)) >= 0 && (*tty = open (ttydev, O_RDWR)) >= 0) { /* * We need to set things up for our next entry * into this function! */ (void) devindex++; return(0); } if (*pty >= 0) close (*pty); } #else /* !CRAY */ #ifdef sgi { char *slave; slave = _getpty (pty, O_RDWR, 0622, 0); if ((*tty = open (slave, O_RDWR)) != -1) return 0; } #else strcpy (ttydev, "/dev/ttyxx"); strcpy (ptydev, "/dev/ptyxx"); while (PTYCHAR1[letter]) { ttydev [strlen(ttydev) - 2] = ptydev [strlen(ptydev) - 2] = PTYCHAR1 [letter]; while (PTYCHAR2[devindex]) { ttydev [strlen(ttydev) - 1] = ptydev [strlen(ptydev) - 1] = PTYCHAR2 [devindex]; if ((*pty = open (ptydev, O_RDWR)) >= 0 && (*tty = open (ttydev, O_RDWR)) >= 0) { /* * We need to set things up for our next entry * into this function! */ (void) devindex++; return(0); } if (*pty >= 0) close (*pty); devindex++; } devindex = 0; (void) letter++; } #endif /* sgi else not sgi */ #endif /* CRAY else not CRAY */ #endif /* umips && SYSTYPE_SYSV */ #endif /* USE_GET_PSEUDOTTY */ #endif /* SVR4 */ /* * We were unable to allocate a pty master! Return an error * condition and let our caller terminate cleanly. */ return(1); } #endif #ifdef USE_OSM /* * On SYSV386 there is a special device, /dev/osm, where system messages * are sent. Problem is that we can't perform a select(2) on this device. * So this routine creates a streams-pty where one end reads the device and * sends the output to xconsole. */ #ifdef SCO325 #define OSM_DEVICE "/dev/error" #else #ifdef __UNIXWARE__ #define OSM_DEVICE "/dev/osm2" #define NO_READAHEAD #else #define OSM_DEVICE "/dev/osm" #endif #endif #ifdef ISC #define NO_READAHEAD #endif static FILE * osm_pipe(void) { int tty; char ttydev[64]; if (access(OSM_DEVICE, R_OK) < 0) return NULL; #if defined (_AIX) if ((tty = open("/dev/ptc", O_RDWR)) < 0) #else if ((tty = open("/dev/ptmx", O_RDWR)) < 0) #endif return NULL; grantpt(tty); unlockpt(tty); strcpy(ttydev, (char *)ptsname(tty)); if ((child_pid = fork()) == 0) { int pty, osm, nbytes, skip; char cbuf[128]; skip = 0; #ifndef NO_READAHEAD osm = open(OSM_DEVICE, O_RDONLY); if (osm >= 0) { while ((nbytes = read(osm, cbuf, sizeof(cbuf))) > 0) skip += nbytes; close(osm); } #endif pty = open(ttydev, O_RDWR); if (pty < 0) exit(1); osm = open(OSM_DEVICE, O_RDONLY); if (osm < 0) exit(1); for (nbytes = 0; skip > 0 && nbytes >= 0; skip -= nbytes) { nbytes = skip; if (nbytes > sizeof(cbuf)) nbytes = sizeof(cbuf); nbytes = read(osm, cbuf, nbytes); } while ((nbytes = read(osm, cbuf, sizeof(cbuf))) >= 0) write(pty, cbuf, nbytes); exit(0); } signal(SIGHUP, KillChild); signal(SIGINT, KillChild); signal(SIGTERM, KillChild); return fdopen(tty, "r"); } #endif /* USE_OSM */