termcap.c revision 18502 
1/*
2 * Copyright (c) 1994, Paul Richards.
3 *
4 * All rights reserved.
5 *
6 * This software may be used, modified, copied, distributed, and sold, in both
7 * source and binary form provided that the above copyright and these terms
8 * are retained, verbatim, as the first lines of this file.  Under no
9 * circumstances is the author responsible for the proper functioning of this
10 * software, nor does the author assume any responsibility for damages
11 * incurred with its use.
12 */
13
14#include <stdio.h>
15#include <stdlib.h>
16#include <string.h>
17#include <unistd.h>
18#include <stdarg.h>
19#include <fcntl.h>
20#include <sys/errno.h>
21#include <sys/ioctl.h>
22#include <machine/console.h>
23
24#include "sysinstall.h"
25
26#define VTY_STATUS_LINE    24
27#define TTY_STATUS_LINE    23
28
29int
30set_termcap(void)
31{
32    char           *term;
33    int		   stat;
34    struct ttysize ts;
35
36    term = getenv("TERM");
37    stat = ioctl(STDERR_FILENO, GIO_COLOR, &ColorDisplay);
38
39    if (getpid() != 1) {
40	DebugFD = open("sysinstall.debug", O_WRONLY|O_CREAT|O_TRUNC, 0644);
41	if (DebugFD < 0)
42	    DebugFD = open("/dev/null", O_RDWR, 0);
43    }
44
45    if (!OnVTY || (stat < 0)) {
46	if (!term) {
47	    if (setenv("TERM", "vt100", 1) < 0)
48		return -1;
49	    if (setenv("TERMCAP", termcap_vt100, 1) < 0)
50		return -1;
51	}
52	if (DebugFD == -1)
53	    DebugFD = dup(1);
54    }
55    else {
56	int i, on;
57
58	if (getpid() == 1) {
59	    DebugFD = open("/dev/ttyv1", O_WRONLY);
60	    on = 1;
61	    i = ioctl(DebugFD, TIOCCONS, (char *)&on);
62	    msgDebug("ioctl(%d, TIOCCONS, NULL) = %d (%s)\n", DebugFD, i, !i ? "success" : strerror(errno));
63	}
64	if (ColorDisplay) {
65	    if (!term) {
66		if (setenv("TERM", "cons25", 1) < 0)
67		    return -1;
68		if (setenv("TERMCAP", termcap_cons25, 1) < 0)
69		    return -1;
70	    }
71	}
72	else {
73	    if (!term) {
74		if (setenv("TERM", "cons25-m", 1) < 0)
75		    return -1;
76		if (setenv("TERMCAP", termcap_cons25_m, 1) < 0)
77		    return -1;
78	    }
79	}
80    }
81    if (ioctl(0, TIOCGSIZE, &ts) == -1) {
82	msgDebug("Unable to get terminal size - errno %d\n", errno);
83	ts.ts_lines = 0;
84    }
85    StatusLine = ts.ts_lines ? ts.ts_lines : (OnVTY ? VTY_STATUS_LINE : TTY_STATUS_LINE);
86    return 0;
87}
88