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
console_ansi_raw(void)41 void 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
52 static struct termios original_termios_settings;
53
console_init(void)54 static void __attribute__ ((constructor)) console_init(void)
55 {
56 tcgetattr(0, &original_termios_settings);
57 }
58
console_cleanup(void)59 static void __attribute__ ((destructor)) console_cleanup(void)
60 {
61 tcsetattr(0, TCSANOW, &original_termios_settings);
62 }
63
console_ansi_raw(void)64 void 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
raw_read(int fd,void * buf,size_t count)86 int 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