1/* ----------------------------------------------------------------------- *
2 *
3 *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
4 *
5 *   Permission is hereby granted, free of charge, to any person
6 *   obtaining a copy of this software and associated documentation
7 *   files (the "Software"), to deal in the Software without
8 *   restriction, including without limitation the rights to use,
9 *   copy, modify, merge, publish, distribute, sublicense, and/or
10 *   sell copies of the Software, and to permit persons to whom
11 *   the Software is furnished to do so, subject to the following
12 *   conditions:
13 *
14 *   The above copyright notice and this permission notice shall
15 *   be included in all copies or substantial portions of the Software.
16 *
17 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
19 *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
21 *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
22 *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
24 *   OTHER DEALINGS IN THE SOFTWARE.
25 *
26 * ----------------------------------------------------------------------- */
27
28/*
29 * ansiraw.c
30 *
31 * Configures the console for ANSI output in raw mode; versions
32 * for COM32 and Linux support.
33 */
34
35#ifdef __COM32__
36
37#include <stdio.h>
38#include <unistd.h>
39#include <console.h>
40
41void console_ansi_raw(void)
42{
43    openconsole(&dev_rawcon_r, &dev_ansiserial_w);
44}
45
46#else
47
48#include <stdio.h>
49#include <termios.h>
50#include <unistd.h>
51
52static struct termios original_termios_settings;
53
54static void __attribute__ ((constructor)) console_init(void)
55{
56    tcgetattr(0, &original_termios_settings);
57}
58
59static void __attribute__ ((destructor)) console_cleanup(void)
60{
61    tcsetattr(0, TCSANOW, &original_termios_settings);
62}
63
64void console_ansi_raw(void)
65{
66    struct termios tio;
67
68    /* Disable stdio buffering */
69    setbuf(stdin, NULL);
70    setbuf(stdout, NULL);
71    setbuf(stderr, NULL);
72
73    /* Set the termios flag so we behave the same as libcom32 */
74    tcgetattr(0, &tio);
75    tio.c_iflag &= ~ICRNL;
76    tio.c_iflag |= IGNCR;
77    tio.c_lflag &= ~(ISIG | ICANON | ECHO);
78    if (!tio.c_oflag & OPOST)
79	tio.c_oflag = 0;
80    tio.c_oflag |= OPOST | ONLCR;
81    tio.c_cc[VMIN] = 0;
82    tio.c_cc[VTIME] = 1;	/* Don't 100% busy-wait in Linux */
83    tcsetattr(0, TCSAFLUSH, &tio);
84}
85
86int raw_read(int fd, void *buf, size_t count)
87{
88	struct termios tio, rtio;
89	int rv;
90
91	tcgetattr(fd, &tio);
92
93	cfmakeraw(&rtio);
94	tcsetattr(fd, 0, &rtio);
95
96	rv = read(fd, buf, count);
97
98	/* Restore settings */
99	tcsetattr(fd, 0, &tio);
100
101	return rv;
102}
103
104#endif
105