tmpfs - Fix mount_tmpfs -C
[dragonfly.git] / usr.bin / tset / tset.c
blob9dcc0a392afdc8d3ec9e2b8c9a69868e80320ad3
1 /*-
2 * Copyright (c) 1980, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
29 * @(#) Copyright (c) 1980, 1991, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)tset.c 8.1 (Berkeley) 6/9/93
31 * $FreeBSD: src/usr.bin/tset/tset.c,v 1.14.2.1 2000/11/12 07:48:29 dg Exp $
32 * $DragonFly: src/usr.bin/tset/tset.c,v 1.3 2003/10/04 20:36:53 hmp Exp $
35 #include <sys/types.h>
36 #include <sys/ioctl.h>
37 #include <ctype.h>
38 #include <err.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <unistd.h>
43 #include <termios.h>
44 #include "extern.h"
46 void obsolete(char *[]);
47 void report(const char *, int, u_int);
48 void usage(void);
50 struct termios mode, oldmode;
52 int erasech; /* new erase character */
53 int intrchar; /* new interrupt character */
54 int isreset; /* invoked as reset */
55 int killch; /* new kill character */
56 int Lines, Columns; /* window size */
57 speed_t Ospeed;
59 int
60 main(int argc, char **argv)
62 #ifdef TIOCGWINSZ
63 struct winsize win;
64 #endif
65 int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper;
66 char *p, *tcapbuf;
67 const char *ttype;
69 if (tcgetattr(STDERR_FILENO, &mode) < 0)
70 err(1, "standard error");
72 oldmode = mode;
73 Ospeed = cfgetospeed(&mode);
75 if ((p = strrchr(*argv, '/')))
76 ++p;
77 else
78 p = *argv;
79 usingupper = isupper(*p);
80 if (!strcasecmp(p, "reset")) {
81 isreset = 1;
82 reset_mode();
85 obsolete(argv);
86 noinit = noset = quiet = Sflag = sflag = showterm = 0;
87 while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != -1) {
88 switch (ch) {
89 case '-': /* display term only */
90 noset = 1;
91 break;
92 case 'a': /* OBSOLETE: map identifier to type */
93 add_mapping("arpanet", optarg);
94 break;
95 case 'd': /* OBSOLETE: map identifier to type */
96 add_mapping("dialup", optarg);
97 break;
98 case 'e': /* erase character */
99 erasech = optarg[0] == '^' && optarg[1] != '\0' ?
100 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
101 optarg[0];
102 break;
103 case 'I': /* no initialization strings */
104 noinit = 1;
105 break;
106 case 'i': /* interrupt character */
107 intrchar = optarg[0] == '^' && optarg[1] != '\0' ?
108 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
109 optarg[0];
110 break;
111 case 'k': /* kill character */
112 killch = optarg[0] == '^' && optarg[1] != '\0' ?
113 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
114 optarg[0];
115 break;
116 case 'm': /* map identifier to type */
117 add_mapping(NULL, optarg);
118 break;
119 case 'n': /* OBSOLETE: set new tty driver */
120 break;
121 case 'p': /* OBSOLETE: map identifier to type */
122 add_mapping("plugboard", optarg);
123 break;
124 case 'Q': /* don't output control key settings */
125 quiet = 1;
126 break;
127 case 'S': /* output TERM/TERMCAP strings */
128 Sflag = 1;
129 break;
130 case 'r': /* display term on stderr */
131 showterm = 1;
132 break;
133 case 's': /* output TERM/TERMCAP strings */
134 sflag = 1;
135 break;
136 case '?':
137 default:
138 usage();
141 argc -= optind;
142 argv += optind;
144 if (argc > 1)
145 usage();
147 ttype = get_termcap_entry(*argv, &tcapbuf);
149 if (!noset) {
150 Columns = tgetnum("co");
151 Lines = tgetnum("li");
153 #ifdef TIOCGWINSZ
154 /* Set window size */
155 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win);
156 if (win.ws_row == 0 && win.ws_col == 0 &&
157 Lines > 0 && Columns > 0) {
158 win.ws_row = Lines;
159 win.ws_col = Columns;
160 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win);
162 #endif
163 set_control_chars();
164 set_conversions(usingupper);
166 if (!noinit)
167 set_init();
169 /* Set the modes if they've changed. */
170 if (memcmp(&mode, &oldmode, sizeof(mode)))
171 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode);
174 if (noset)
175 (void)printf("%s\n", ttype);
176 else {
177 if (showterm)
178 (void)fprintf(stderr, "Terminal type is %s.\n", ttype);
180 * If erase, kill and interrupt characters could have been
181 * modified and not -Q, display the changes.
183 if (!quiet) {
184 report("Erase", VERASE, CERASE);
185 report("Kill", VKILL, CKILL);
186 report("Interrupt", VINTR, CINTR);
190 if (Sflag) {
191 (void)printf("%s ", ttype);
192 if (strlen(tcapbuf) > 0)
193 wrtermcap(tcapbuf);
196 if (sflag) {
198 * Figure out what shell we're using. A hack, we look for an
199 * environmental variable SHELL ending in "csh".
201 if ((p = getenv("SHELL")) &&
202 !strcmp(p + strlen(p) - 3, "csh")) {
203 printf("set noglob;\nsetenv TERM %s;\n", ttype);
204 if (strlen(tcapbuf) > 0) {
205 printf("setenv TERMCAP '");
206 wrtermcap(tcapbuf);
207 printf("';\n");
209 printf("unset noglob;\n");
210 } else {
211 printf("TERM=%s;\n", ttype);
212 if (strlen(tcapbuf) > 0) {
213 printf("TERMCAP='");
214 wrtermcap(tcapbuf);
215 printf("';\nexport TERMCAP;\n");
217 printf("export TERM;\n");
221 exit(0);
225 * Tell the user if a control key has been changed from the default value.
227 void
228 report(const char *name, int which, u_int def)
230 u_int old, new;
232 new = mode.c_cc[which];
233 old = oldmode.c_cc[which];
235 if (old == new && old == def)
236 return;
238 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to");
240 if (new == 010)
241 (void)fprintf(stderr, "backspace.\n");
242 else if (new == 0177)
243 (void)fprintf(stderr, "delete.\n");
244 else if (new < 040) {
245 new ^= 0100;
246 (void)fprintf(stderr, "control-%c (^%c).\n", new, new);
247 } else
248 (void)fprintf(stderr, "%c.\n", new);
252 * Convert the obsolete argument form into something that getopt can handle.
253 * This means that -e, -i and -k get default arguments supplied for them.
255 void
256 obsolete(char **argv)
258 for (; *argv; ++argv) {
259 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') ||
260 (argv[0][1] != 'e' && argv[0][1] != 'i' && argv[0][1] != 'k') ||
261 argv[0][2] != '\0')
262 continue;
263 switch(argv[0][1]) {
264 case 'e':
265 argv[0] = strdup("-e^H");
266 break;
267 case 'i':
268 argv[0] = strdup("-i^C");
269 break;
270 case 'k':
271 argv[0] = strdup("-k^U");
272 break;
277 void
278 usage(void)
280 (void)fprintf(stderr, "%s\n%s\n",
281 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]",
282 " reset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]");
283 exit(1);