Commit | Line | Data |
---|---|---|
20c428fd | 1 | /* Definitions file for GNU Emacs running on AT&T's System V Release 4 |
4b158629 | 2 | Copyright (C) 1987, 1990, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
114f9c96 | 3 | 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
20c428fd JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
4b158629 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
bd307392 | 8 | it under the terms of the GNU General Public License as published by |
4b158629 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
bd307392 | 11 | |
20c428fd | 12 | GNU Emacs is distributed in the hope that it will be useful, |
bd307392 JB |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
4b158629 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
20c428fd JB |
19 | |
20 | /* This file written by James Van Artsdalen of Dell Computer Corporation. | |
5447018c JB |
21 | * james@bigtex.cactus.org. Subsequently improved for Dell 2.2 by Eric |
22 | * S. Raymond <esr@snark.thyrsus.com>. | |
20c428fd JB |
23 | */ |
24 | ||
25 | /* Use the SysVr3 file for at least base configuration. */ | |
26 | ||
f2a77c3a | 27 | #define USG /* System III, System V, etc */ |
20c428fd | 28 | |
f2a77c3a | 29 | #define USG5 |
20c428fd JB |
30 | #define USG5_4 |
31 | ||
f2a77c3a DN |
32 | /* SYSTEM_TYPE should indicate the kind of system you are using. |
33 | It sets the Lisp variable system-type. */ | |
20c428fd | 34 | |
f2a77c3a | 35 | #define SYSTEM_TYPE "usg-unix-v" |
20c428fd | 36 | |
f2a77c3a DN |
37 | /* |
38 | * Define HAVE_TERMIO if the system provides sysV-style ioctls | |
39 | * for terminal control. | |
40 | */ | |
41 | ||
42 | #define HAVE_TERMIO | |
43 | ||
44 | /* | |
45 | * Define HAVE_PTYS if the system supports pty devices. | |
46 | */ | |
47 | ||
f2a77c3a DN |
48 | /* |
49 | * Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir | |
50 | * library functions. Almost, but not quite the same as | |
51 | * the 4.2 functions | |
52 | */ | |
53 | #define SYSV_SYSTEM_DIR | |
54 | ||
f2a77c3a DN |
55 | /* The file containing the kernel's symbol table is called /unix. */ |
56 | ||
57 | #define KERNEL_FILE "/unix" | |
58 | ||
59 | /* The symbol in the kernel where the load average is found | |
60 | is named avenrun. */ | |
61 | ||
62 | #define LDAV_SYMBOL "avenrun" | |
63 | ||
f2a77c3a DN |
64 | /* Special hacks needed to make Emacs run on this system. */ |
65 | ||
66 | /* | |
67 | * Make the sigsetmask function go away. Don't know what the | |
68 | * ramifications of this are, but doesn't seem possible to | |
69 | * emulate it properly anyway at this point. | |
70 | */ | |
71 | ||
72 | #define sigsetmask(mask) /* Null expansion */ | |
73 | ||
74 | /* setjmp and longjmp can safely replace _setjmp and _longjmp, | |
75 | but they will run slower. */ | |
76 | ||
77 | #define _setjmp setjmp | |
78 | #define _longjmp longjmp | |
79 | ||
80 | /* On USG systems these have different names */ | |
81 | #ifndef HAVE_INDEX | |
82 | #define index strchr | |
83 | #endif /* ! defined (HAVE_INDEX) */ | |
84 | #ifndef HAVE_RINDEX | |
85 | #define rindex strrchr | |
86 | #endif /* ! defined (HAVE_RINDEX) */ | |
87 | ||
f2a77c3a DN |
88 | /* Use terminfo instead of termcap. */ |
89 | ||
90 | #define TERMINFO | |
91 | ||
92 | ||
93 | /* The docs for system V/386 suggest v.3 has sigpause, | |
94 | so let's give it a try. */ | |
95 | #define HAVE_SYSV_SIGPAUSE | |
96 | ||
97 | ||
98 | /* If we're using the System V X port, BSD bstring functions will be handy */ | |
99 | ||
100 | #ifdef HAVE_X_WINDOWS | |
101 | #define BSTRING | |
102 | #endif /* HAVE_X_WINDOWS */ | |
103 | ||
f2a77c3a DN |
104 | /* On USG systems signal handlers return void */ |
105 | ||
106 | #define SIGTYPE void | |
5cb70bb5 | 107 | |
d6bf1bdb DN |
108 | #define ORDINARY_LINK |
109 | ||
110 | #define LIB_STANDARD | |
20c428fd | 111 | |
5447018c JB |
112 | /* there are no -lg libraries on this system, and no libPW */ |
113 | ||
114 | #define LIBS_DEBUG | |
20c428fd JB |
115 | |
116 | /* Undump with ELF */ | |
117 | ||
118 | #undef COFF | |
119 | ||
120 | #define UNEXEC unexelf.o | |
121 | ||
122 | /* Get FIONREAD from <sys/filio.h>. Get <sys/ttold.h> to get struct | |
123 | * tchars. But get <termio.h> first to make sure ttold.h doesn't | |
124 | * interfere. And don't try to use SIGIO yet. | |
125 | */ | |
126 | ||
f0ce95e7 RS |
127 | #ifndef NOT_C_CODE |
128 | #include <sys/wait.h> | |
129 | #endif | |
130 | ||
20c428fd JB |
131 | #ifdef emacs |
132 | #include <sys/filio.h> | |
133 | #include <termio.h> | |
134 | #include <sys/ttold.h> | |
135 | #include <signal.h> | |
bd307392 JB |
136 | #include <sys/stream.h> |
137 | #include <sys/stropts.h> | |
138 | #include <sys/termios.h> | |
bb7b4368 | 139 | #define BROKEN_SIGIO |
20c428fd JB |
140 | #endif |
141 | ||
5447018c JB |
142 | /* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments; |
143 | * instead, there's a system variable _sys_nsig. Unfortunately, we need the | |
144 | * constant to dimension an array. So wire in the appropriate value here. | |
145 | */ | |
bb7b4368 | 146 | #define NSIG_MINIMUM 32 |
5447018c | 147 | |
20c428fd JB |
148 | /* We can support this */ |
149 | ||
150 | #define CLASH_DETECTION | |
151 | ||
152 | #define HAVE_PTYS | |
5447018c | 153 | #define HAVE_TERMIOS |
20c428fd JB |
154 | |
155 | /* It is possible to receive SIGCHLD when there are no children | |
156 | waiting, because a previous waitsys(2) cleaned up the carcass of child | |
157 | without clearing the SIGCHLD pending info. So, use a non-blocking | |
158 | wait3 instead, which maps to waitpid(2) in SysVr4. */ | |
159 | ||
20c428fd | 160 | #define wait3(status, options, rusage) \ |
5bf62b08 | 161 | waitpid ((pid_t) -1, (status), (options)) |
20c428fd JB |
162 | #define WRETCODE(w) (w >> 8) |
163 | ||
164 | /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY | |
165 | subprocesses the usual way. But TIOCSIGNAL does work for PTYs, and | |
166 | this is all we need. */ | |
167 | ||
168 | #define TIOCSIGSEND TIOCSIGNAL | |
169 | ||
170 | /* This change means that we don't loop through allocate_pty too many | |
171 | times in the (rare) event of a failure. */ | |
172 | ||
20c428fd JB |
173 | #define FIRST_PTY_LETTER 'z' |
174 | ||
175 | /* This sets the name of the master side of the PTY. */ | |
176 | ||
177 | #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx"); | |
178 | ||
179 | /* This sets the name of the slave side of the PTY. On SysVr4, | |
180 | grantpt(3) forks a subprocess, so keep sigchld_handler() from | |
181 | intercepting that death. If any child but grantpt's should die | |
182 | within, it should be caught after sigrelse(2). */ | |
183 | ||
5bf62b08 RS |
184 | #define PTY_TTY_NAME_SPRINTF \ |
185 | { \ | |
186 | char *ptsname (), *ptyname; \ | |
187 | \ | |
188 | sighold (SIGCLD); \ | |
189 | if (grantpt (fd) == -1) \ | |
bb7b4368 | 190 | { emacs_close (fd); return -1; } \ |
5bf62b08 RS |
191 | sigrelse (SIGCLD); \ |
192 | if (unlockpt (fd) == -1) \ | |
bb7b4368 | 193 | { emacs_close (fd); return -1; } \ |
5bf62b08 | 194 | if (!(ptyname = ptsname (fd))) \ |
bb7b4368 | 195 | { emacs_close (fd); return -1; } \ |
5bf62b08 RS |
196 | strncpy (pty_name, ptyname, sizeof (pty_name)); \ |
197 | pty_name[sizeof (pty_name) - 1] = 0; \ | |
20c428fd JB |
198 | } |
199 | ||
200 | /* Push various streams modules onto a PTY channel. */ | |
201 | ||
202 | #define SETUP_SLAVE_PTY \ | |
203 | if (ioctl (xforkin, I_PUSH, "ptem") == -1) \ | |
204 | fatal ("ioctl I_PUSH ptem", errno); \ | |
205 | if (ioctl (xforkin, I_PUSH, "ldterm") == -1) \ | |
206 | fatal ("ioctl I_PUSH ldterm", errno); \ | |
207 | if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \ | |
208 | fatal ("ioctl I_PUSH ttcompat", errno); | |
209 | ||
bd307392 JB |
210 | /* This definition was suggested for next release. |
211 | So give it a try. */ | |
212 | #define HAVE_SOCKETS | |
5cb70bb5 | 213 | |
ab5796a9 MB |
214 | /* arch-tag: 1a0ed909-5faa-434b-b7c3-9d86c63d53a6 |
215 | (do not change this comment) */ |