Commit | Line | Data |
---|---|---|
20c428fd | 1 | /* Definitions file for GNU Emacs running on AT&T's System V Release 4 |
40c17879 | 2 | |
73b0cd50 | 3 | Copyright (C) 1987, 1990, 1999-2011 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 | 29 | /* SYSTEM_TYPE should indicate the kind of system you are using. |
e05aebe9 | 30 | It sets the Lisp variable system-type. */ |
f2a77c3a | 31 | #define SYSTEM_TYPE "usg-unix-v" |
20c428fd | 32 | |
f2a77c3a DN |
33 | /* setjmp and longjmp can safely replace _setjmp and _longjmp, |
34 | but they will run slower. */ | |
f2a77c3a DN |
35 | #define _setjmp setjmp |
36 | #define _longjmp longjmp | |
37 | ||
e05aebe9 | 38 | /* The docs for system V/386 suggest v.3 has sigpause, so let's try it. */ |
f2a77c3a DN |
39 | #define HAVE_SYSV_SIGPAUSE |
40 | ||
e05aebe9 GM |
41 | /* Get FIONREAD from <sys/filio.h>. Get <sys/ttold.h> to get struct tchars. |
42 | But get <termio.h> first to make sure ttold.h doesn't interfere. | |
43 | And don't try to use SIGIO yet. */ | |
f0ce95e7 | 44 | #include <sys/wait.h> |
f0ce95e7 | 45 | |
20c428fd JB |
46 | #ifdef emacs |
47 | #include <sys/filio.h> | |
48 | #include <termio.h> | |
49 | #include <sys/ttold.h> | |
50 | #include <signal.h> | |
bd307392 JB |
51 | #include <sys/stream.h> |
52 | #include <sys/stropts.h> | |
53 | #include <sys/termios.h> | |
bb7b4368 | 54 | #define BROKEN_SIGIO |
20c428fd JB |
55 | #endif |
56 | ||
5447018c | 57 | /* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments; |
e05aebe9 GM |
58 | instead, there's a system variable _sys_nsig. Unfortunately, we need the |
59 | constant to dimension an array. So wire in the appropriate value here. */ | |
bb7b4368 | 60 | #define NSIG_MINIMUM 32 |
5447018c | 61 | |
e05aebe9 | 62 | /* We can support this. */ |
20c428fd JB |
63 | #define CLASH_DETECTION |
64 | ||
e05aebe9 | 65 | /* Define HAVE_PTYS if the system supports pty devices. */ |
20c428fd | 66 | #define HAVE_PTYS |
20c428fd JB |
67 | |
68 | /* It is possible to receive SIGCHLD when there are no children | |
69 | waiting, because a previous waitsys(2) cleaned up the carcass of child | |
70 | without clearing the SIGCHLD pending info. So, use a non-blocking | |
71 | wait3 instead, which maps to waitpid(2) in SysVr4. */ | |
20c428fd | 72 | #define wait3(status, options, rusage) \ |
5bf62b08 | 73 | waitpid ((pid_t) -1, (status), (options)) |
20c428fd JB |
74 | #define WRETCODE(w) (w >> 8) |
75 | ||
76 | /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY | |
77 | subprocesses the usual way. But TIOCSIGNAL does work for PTYs, and | |
78 | this is all we need. */ | |
20c428fd JB |
79 | #define TIOCSIGSEND TIOCSIGNAL |
80 | ||
81 | /* This change means that we don't loop through allocate_pty too many | |
e05aebe9 | 82 | times in the (rare) event of a failure. */ |
20c428fd JB |
83 | #define FIRST_PTY_LETTER 'z' |
84 | ||
e05aebe9 | 85 | /* This sets the name of the master side of the PTY. */ |
20c428fd JB |
86 | #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx"); |
87 | ||
e05aebe9 | 88 | /* Push various streams modules onto a PTY channel. */ |
20c428fd JB |
89 | #define SETUP_SLAVE_PTY \ |
90 | if (ioctl (xforkin, I_PUSH, "ptem") == -1) \ | |
91 | fatal ("ioctl I_PUSH ptem", errno); \ | |
92 | if (ioctl (xforkin, I_PUSH, "ldterm") == -1) \ | |
93 | fatal ("ioctl I_PUSH ldterm", errno); \ | |
94 | if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \ | |
95 | fatal ("ioctl I_PUSH ttcompat", errno); | |
96 | ||
e05aebe9 | 97 | /* This definition was suggested for next release. So give it a try. */ |
bd307392 | 98 | #define HAVE_SOCKETS |