HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| 20c428fd | 1 | /* Definitions file for GNU Emacs running on AT&T's System V Release 4 |
| 40c17879 | 2 | |
| acaf905b | 3 | Copyright (C) 1987, 1990, 1999-2012 Free Software Foundation, Inc. |
| 20c428fd | 4 | |
| e05aebe9 GM |
5 | Written by James Van Artsdalen of Dell Computer Corp. james@bigtex.cactus.org. |
| 6 | Subsequently improved for Dell 2.2 by Eric S. Raymond <esr@snark.thyrsus.com>. | |
| 7 | ||
| 20c428fd JB |
8 | This file is part of GNU Emacs. |
| 9 | ||
| 4b158629 | 10 | GNU Emacs is free software: you can redistribute it and/or modify |
| bd307392 | 11 | it under the terms of the GNU General Public License as published by |
| 4b158629 GM |
12 | the Free Software Foundation, either version 3 of the License, or |
| 13 | (at your option) any later version. | |
| bd307392 | 14 | |
| 20c428fd | 15 | GNU Emacs is distributed in the hope that it will be useful, |
| bd307392 JB |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | GNU General Public License for more details. | |
| 19 | ||
| 20 | You should have received a copy of the GNU General Public License | |
| 4b158629 | 21 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 20c428fd | 22 | |
| e05aebe9 | 23 | /* Use the SysVr3 file for at least base configuration. */ |
| f2a77c3a | 24 | #define USG /* System III, System V, etc */ |
| 20c428fd | 25 | |
| f2a77c3a | 26 | #define USG5 |
| 20c428fd JB |
27 | #define USG5_4 |
| 28 | ||
| f2a77c3a DN |
29 | /* setjmp and longjmp can safely replace _setjmp and _longjmp, |
| 30 | but they will run slower. */ | |
| f2a77c3a DN |
31 | #define _setjmp setjmp |
| 32 | #define _longjmp longjmp | |
| 33 | ||
| e05aebe9 | 34 | /* The docs for system V/386 suggest v.3 has sigpause, so let's try it. */ |
| f2a77c3a DN |
35 | #define HAVE_SYSV_SIGPAUSE |
| 36 | ||
| e05aebe9 GM |
37 | /* Get FIONREAD from <sys/filio.h>. Get <sys/ttold.h> to get struct tchars. |
| 38 | But get <termio.h> first to make sure ttold.h doesn't interfere. | |
| 39 | And don't try to use SIGIO yet. */ | |
| f0ce95e7 | 40 | #include <sys/wait.h> |
| f0ce95e7 | 41 | |
| 20c428fd JB |
42 | #ifdef emacs |
| 43 | #include <sys/filio.h> | |
| 44 | #include <termio.h> | |
| 45 | #include <sys/ttold.h> | |
| 46 | #include <signal.h> | |
| bd307392 JB |
47 | #include <sys/stream.h> |
| 48 | #include <sys/stropts.h> | |
| 49 | #include <sys/termios.h> | |
| bb7b4368 | 50 | #define BROKEN_SIGIO |
| 20c428fd JB |
51 | #endif |
| 52 | ||
| 5447018c | 53 | /* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments; |
| e05aebe9 GM |
54 | instead, there's a system variable _sys_nsig. Unfortunately, we need the |
| 55 | constant to dimension an array. So wire in the appropriate value here. */ | |
| bb7b4368 | 56 | #define NSIG_MINIMUM 32 |
| 5447018c | 57 | |
| e05aebe9 | 58 | /* We can support this. */ |
| 20c428fd JB |
59 | #define CLASH_DETECTION |
| 60 | ||
| e05aebe9 | 61 | /* Define HAVE_PTYS if the system supports pty devices. */ |
| 20c428fd | 62 | #define HAVE_PTYS |
| 20c428fd JB |
63 | |
| 64 | /* It is possible to receive SIGCHLD when there are no children | |
| 65 | waiting, because a previous waitsys(2) cleaned up the carcass of child | |
| 66 | without clearing the SIGCHLD pending info. So, use a non-blocking | |
| 67 | wait3 instead, which maps to waitpid(2) in SysVr4. */ | |
| 20c428fd | 68 | #define wait3(status, options, rusage) \ |
| 5bf62b08 | 69 | waitpid ((pid_t) -1, (status), (options)) |
| 20c428fd JB |
70 | #define WRETCODE(w) (w >> 8) |
| 71 | ||
| 72 | /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY | |
| 73 | subprocesses the usual way. But TIOCSIGNAL does work for PTYs, and | |
| 74 | this is all we need. */ | |
| 20c428fd JB |
75 | #define TIOCSIGSEND TIOCSIGNAL |
| 76 | ||
| 77 | /* This change means that we don't loop through allocate_pty too many | |
| e05aebe9 | 78 | times in the (rare) event of a failure. */ |
| 20c428fd JB |
79 | #define FIRST_PTY_LETTER 'z' |
| 80 | ||
| e05aebe9 | 81 | /* This sets the name of the master side of the PTY. */ |
| 20c428fd JB |
82 | #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx"); |
| 83 | ||
| e05aebe9 | 84 | /* Push various streams modules onto a PTY channel. */ |
| 20c428fd JB |
85 | #define SETUP_SLAVE_PTY \ |
| 86 | if (ioctl (xforkin, I_PUSH, "ptem") == -1) \ | |
| efc736d3 | 87 | fatal ("ioctl I_PUSH ptem"); \ |
| 20c428fd | 88 | if (ioctl (xforkin, I_PUSH, "ldterm") == -1) \ |
| efc736d3 | 89 | fatal ("ioctl I_PUSH ldterm"); \ |
| 20c428fd | 90 | if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \ |
| efc736d3 | 91 | fatal ("ioctl I_PUSH ttcompat"); |
| 20c428fd | 92 | |
| e05aebe9 | 93 | /* This definition was suggested for next release. So give it a try. */ |
| bd307392 | 94 | #define HAVE_SOCKETS |