summaryrefslogtreecommitdiff
path: root/hw/xfree86/os-support/lynxos/lynx_init.c
blob: 8565dcc5c3a1e3dc4f90ab560ab435887baad05c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/*
 * Copyright 1993 by Thomas Mueller
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Thomas Mueller not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Thomas Mueller makes no representations
 * about the suitability of this software for any purpose.  It is provided
 * "as is" without express or implied warranty.
 *
 * THOMAS MUELLER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THOMAS MUELLER BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 *
 */


/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_init.c,v 3.3 1998/08/29 05:43:58 dawes Exp $ */

#include "X.h"
#include "Xmd.h"

#include "compiler.h"

#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"

static int VTnum = -1;

void
xf86OpenConsole()
{
    struct vt_mode VT;
    char vtname1[11];
    int fd, pgrp;
    MessageType from = X_PROBED;

    if (serverGeneration == 1) 
    {
	/* check if we're run with euid==0 */
	if (geteuid() != 0)
	{
	    FatalError("xf86OpenConsole: Server must be suid root\n");
	}

    	/*
     	 * setup the virtual terminal manager
     	 * NOTE:
     	 *   We use the out-of-the-box atc terminal driver,
     	 *   not the GE contributed vdt driver.
     	 *   Also, we do setup signals for VT switching which
     	 *   is not really necessary because we don't feed the
     	 *   VT switch keystrokes to the kernel in xf86Events.c
     	 *   (it bombs occasionally...)
     	 */
    	if (VTnum != -1) 
	{
      	    xf86Info.vtno = VTnum;
	    from = X_CMDLINE;
    	}
    	else 
	{
	    /* We could use /dev/con which is usually a symlink
	     * to /dev/atc0 but one could configure the system
	     * to use a serial line as console device, so to 
	     * be sure we take /dev/atc0.
	     */
      	    if ((fd = open("/dev/atc0",O_WRONLY,0)) < 0) 
	    {
        	FatalError(
		    "xf86OpenConsole: Cannot open /dev/atc0 (%s)\n",
		    strerror(errno));
	    }
      	    if ((ioctl(fd, VT_OPENQRY, &xf86Info.vtno) < 0) || 
		(xf86Info.vtno == -1))
	    {
        	FatalError("xf86OpenConsole: Cannot find a free VT\n");
	    }
           close(fd);
        }
	xf86Msg(from, "using VT number %d\n", xf86Info.vtno);

	sprintf(vtname1,"/dev/atc%d",xf86Info.vtno);

	pgrp = getpgrp();		/* POSIX version ! */
	ioctl(xf86Info.consoleFd, TIOCSPGRP, &pgrp);

	if ((xf86Info.consoleFd = open(vtname1,O_RDWR|O_NDELAY,0)) < 0) 
	{
		FatalError(
		    "xf86OpenConsole: Cannot open %s (%s)\n",
		    vtname1, strerror(errno));
	}
	/* change ownership of the vt */
	chown(vtname1, getuid(), getgid());

	/*
	 * now get the VT
	 */
	if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) != 0)
	{
    	    xf86Msg(X_WARNING, "xf86OpenConsole: VT_ACTIVATE failed\n");
	}
	if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) < 0) 
	{
	    FatalError("xf86OpenConsole: VT_GETMODE failed\n");
	}

	/* for future use... */
	signal(SIGUSR1, xf86VTRequest);

	VT.mode = VT_PROCESS;
	VT.relsig = SIGUSR1;
	VT.acqsig = SIGUSR1;
	if (ioctl(xf86Info.consoleFd, VT_SETMODE, &VT) < 0) 
	{
	    FatalError("xf86OpenConsole: VT_SETMODE VT_PROCESS failed\n");
	}
    }
    else
    {
	/* serverGeneration != 1 */
	/*
	 * now get the VT
	 */
	if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) != 0)
	{
	    xf86Msg(X_WARNING, "xf86OpenConsole: VT_ACTIVATE failed\n");
	}
	/*
	 * If the server doesn't have the VT when the reset occurs,
	 * this is to make sure we don't continue until the activate
	 * signal is received.
	 */
	if (!xf86Screens[0]->vtSema)
	    sleep(5);
    }
    return;
}

void
xf86CloseConsole()
{
    struct vt_mode   VT;

#if 0
    ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno);
    ioctl(xf86Info.consoleFd, VT_WAITACTIVE, 0);
#endif
    if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) != -1)
    {
	VT.mode = VT_AUTO;
	ioctl(xf86Info.consoleFd, VT_SETMODE, &VT); /* set dflt vt handling */
    }
    close(xf86Info.consoleFd);                 /* make the vt-manager happy */
    return;
}

int
xf86ProcessArgument(int argc, char *argv[], int i)
{
	if ((argv[i][0] == 'v') && (argv[i][1] == 't'))
	{
		if (sscanf(argv[i], "vt%2d", &VTnum) == 0)
		{
			UseMsg();
			VTnum = -1;
			return(0);
		}
		return(1);
	}
	return(0);
}

void
xf86UseMsg()
{
	ErrorF("vtXX                   use the specified VT number\n");
	return;
}