termcap.c revision 17382 
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    OnVTY = FALSE;
37    term = getenv("TERM");
38    stat = ioctl(STDERR_FILENO, GIO_COLOR, &ColorDisplay);
39
40    if (getpid() != 1) {
41	DebugFD = open("sysinstall.debug", O_WRONLY|O_CREAT|O_TRUNC, 0644);
42	if (DebugFD < 0)
43	    DebugFD = open("/dev/null", O_RDWR, 0);
44    }
45
46    if (stat < 0) {
47	if (!term) {
48	    if (setenv("TERM", "vt100", 1) < 0)
49		return -1;
50	    if (setenv("TERMCAP", termcap_vt100, 1) < 0)
51		return -1;
52	}
53	if (DebugFD == -1)
54	    DebugFD = dup(1);
55    }
56    else {
57	int i, on;
58
59	if (getpid() == 1) {
60	    DebugFD = open("/dev/ttyv1", O_WRONLY);
61	    on = 1;
62	    i = ioctl(DebugFD, TIOCCONS, (char *)&on);
63	    msgDebug("ioctl(%d, TIOCCONS, NULL) = %d (%s)\n", DebugFD, i, !i ? "success" : strerror(errno));
64	}
65	if (ColorDisplay) {
66	    if (!term) {
67		if (setenv("TERM", "cons25", 1) < 0)
68		    return -1;
69		if (setenv("TERMCAP", termcap_cons25, 1) < 0)
70		    return -1;
71	    }
72	}
73	else {
74	    if (!term) {
75		if (setenv("TERM", "cons25-m", 1) < 0)
76		    return -1;
77		if (setenv("TERMCAP", termcap_cons25_m, 1) < 0)
78		    return -1;
79	    }
80	}
81	OnVTY = TRUE;
82    }
83    if (ioctl(0, TIOCGSIZE, &ts) == -1) {
84	msgDebug("Unable to get terminal size - errno %d\n", errno);
85	ts.ts_lines = 0;
86    }
87    StatusLine = ts.ts_lines ? ts.ts_lines : (OnVTY ? VTY_STATUS_LINE : TTY_STATUS_LINE);
88    return 0;
89}
90