| 1 |
#include <unistd.h> |
| 2 |
#include <fcntl.h> |
| 3 |
#include <termios.h> |
| 4 |
#include "rdesktop.h" |
| 5 |
|
| 6 |
#define FILE_DEVICE_SERIAL_PORT 0x1b |
| 7 |
|
| 8 |
#define SERIAL_SET_BAUD_RATE 1 |
| 9 |
#define SERIAL_SET_QUEUE_SIZE 2 |
| 10 |
#define SERIAL_SET_LINE_CONTROL 3 |
| 11 |
#define SERIAL_SET_BREAK_ON 4 |
| 12 |
#define SERIAL_SET_BREAK_OFF 5 |
| 13 |
#define SERIAL_IMMEDIATE_CHAR 6 |
| 14 |
#define SERIAL_SET_TIMEOUTS 7 |
| 15 |
#define SERIAL_GET_TIMEOUTS 8 |
| 16 |
#define SERIAL_SET_DTR 9 |
| 17 |
#define SERIAL_CLR_DTR 10 |
| 18 |
#define SERIAL_RESET_DEVICE 11 |
| 19 |
#define SERIAL_SET_RTS 12 |
| 20 |
#define SERIAL_CLR_RTS 13 |
| 21 |
#define SERIAL_SET_XOFF 14 |
| 22 |
#define SERIAL_SET_XON 15 |
| 23 |
#define SERIAL_GET_WAIT_MASK 16 |
| 24 |
#define SERIAL_SET_WAIT_MASK 17 |
| 25 |
#define SERIAL_WAIT_ON_MASK 18 |
| 26 |
#define SERIAL_PURGE 19 |
| 27 |
#define SERIAL_GET_BAUD_RATE 20 |
| 28 |
#define SERIAL_GET_LINE_CONTROL 21 |
| 29 |
#define SERIAL_GET_CHARS 22 |
| 30 |
#define SERIAL_SET_CHARS 23 |
| 31 |
#define SERIAL_GET_HANDFLOW 24 |
| 32 |
#define SERIAL_SET_HANDFLOW 25 |
| 33 |
#define SERIAL_GET_MODEMSTATUS 26 |
| 34 |
#define SERIAL_GET_COMMSTATUS 27 |
| 35 |
#define SERIAL_XOFF_COUNTER 28 |
| 36 |
#define SERIAL_GET_PROPERTIES 29 |
| 37 |
#define SERIAL_GET_DTRRTS 30 |
| 38 |
#define SERIAL_LSRMST_INSERT 31 |
| 39 |
#define SERIAL_CONFIG_SIZE 32 |
| 40 |
#define SERIAL_GET_COMMCONFIG 33 |
| 41 |
#define SERIAL_SET_COMMCONFIG 34 |
| 42 |
#define SERIAL_GET_STATS 35 |
| 43 |
#define SERIAL_CLEAR_STATS 36 |
| 44 |
#define SERIAL_GET_MODEM_CONTROL 37 |
| 45 |
#define SERIAL_SET_MODEM_CONTROL 38 |
| 46 |
#define SERIAL_SET_FIFO_CONTROL 39 |
| 47 |
|
| 48 |
#define STOP_BITS_1 0 |
| 49 |
#define STOP_BITS_2 2 |
| 50 |
|
| 51 |
#define NO_PARITY 0 |
| 52 |
#define ODD_PARITY 1 |
| 53 |
#define EVEN_PARITY 2 |
| 54 |
|
| 55 |
int serial_fd; |
| 56 |
struct termios termios; |
| 57 |
|
| 58 |
int dtr; |
| 59 |
uint32 baud_rate; |
| 60 |
uint32 queue_in_size, queue_out_size; |
| 61 |
uint32 wait_mask; |
| 62 |
uint8 stop_bits, parity, word_length; |
| 63 |
|
| 64 |
static BOOL |
| 65 |
get_termios(void) |
| 66 |
{ |
| 67 |
speed_t speed; |
| 68 |
|
| 69 |
if (tcgetattr(serial_fd, &termios) == -1) |
| 70 |
return False; |
| 71 |
|
| 72 |
speed = cfgetispeed(&termios); |
| 73 |
switch (speed) |
| 74 |
{ |
| 75 |
case B75: baud_rate = 75; break; |
| 76 |
case B110: baud_rate = 110; break; |
| 77 |
case B134: baud_rate = 134; break; |
| 78 |
case B150: baud_rate = 150; break; |
| 79 |
case B300: baud_rate = 300; break; |
| 80 |
case B600: baud_rate = 600; break; |
| 81 |
case B1200: baud_rate = 1200; break; |
| 82 |
case B1800: baud_rate = 1800; break; |
| 83 |
case B2400: baud_rate = 2400; break; |
| 84 |
case B4800: baud_rate = 4800; break; |
| 85 |
case B9600: baud_rate = 9600; break; |
| 86 |
case B19200: baud_rate = 19200; break; |
| 87 |
case B38400: baud_rate = 38400; break; |
| 88 |
case B57600: baud_rate = 57600; break; |
| 89 |
case B115200: baud_rate = 115200; break; |
| 90 |
default: baud_rate = 0; break; |
| 91 |
} |
| 92 |
|
| 93 |
speed = cfgetospeed(&termios); |
| 94 |
dtr = (speed == B0) ? 0 : 1; |
| 95 |
|
| 96 |
stop_bits = (termios.c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1; |
| 97 |
parity = (termios.c_cflag & PARENB) ? ((termios.c_cflag & PARODD) ? ODD_PARITY : EVEN_PARITY) : NO_PARITY; |
| 98 |
switch (termios.c_cflag & CSIZE) |
| 99 |
{ |
| 100 |
case CS5: word_length = 5; break; |
| 101 |
case CS6: word_length = 6; break; |
| 102 |
case CS7: word_length = 7; break; |
| 103 |
default: word_length = 8; break; |
| 104 |
} |
| 105 |
|
| 106 |
return True; |
| 107 |
} |
| 108 |
|
| 109 |
static void |
| 110 |
set_termios(void) |
| 111 |
{ |
| 112 |
speed_t speed; |
| 113 |
|
| 114 |
switch (baud_rate) |
| 115 |
{ |
| 116 |
case 75: speed = B75; break; |
| 117 |
case 110: speed = B110; break; |
| 118 |
case 134: speed = B134; break; |
| 119 |
case 150: speed = B150; break; |
| 120 |
case 300: speed = B300; break; |
| 121 |
case 600: speed = B600; break; |
| 122 |
case 1200: speed = B1200; break; |
| 123 |
case 1800: speed = B1800; break; |
| 124 |
case 2400: speed = B2400; break; |
| 125 |
case 4800: speed = B4800; break; |
| 126 |
case 9600: speed = B9600; break; |
| 127 |
case 19200: speed = B19200; break; |
| 128 |
case 38400: speed = B38400; break; |
| 129 |
case 57600: speed = B57600; break; |
| 130 |
case 115200: speed = B115200; break; |
| 131 |
default: speed = B0; break; |
| 132 |
} |
| 133 |
|
| 134 |
/* on systems with separate ispeed and ospeed, we can remember the speed |
| 135 |
in ispeed while changing DTR with ospeed */ |
| 136 |
cfsetispeed(&termios, speed); |
| 137 |
cfsetospeed(&termios, dtr ? speed : 0); |
| 138 |
|
| 139 |
termios.c_cflag &= ~(CSTOPB|PARENB|PARODD|CSIZE); |
| 140 |
switch (stop_bits) |
| 141 |
{ |
| 142 |
case STOP_BITS_2: |
| 143 |
termios.c_cflag |= CSTOPB; |
| 144 |
break; |
| 145 |
} |
| 146 |
switch (parity) |
| 147 |
{ |
| 148 |
case EVEN_PARITY: |
| 149 |
termios.c_cflag |= PARENB; |
| 150 |
break; |
| 151 |
case ODD_PARITY: |
| 152 |
termios.c_cflag |= PARENB|PARODD; |
| 153 |
break; |
| 154 |
} |
| 155 |
switch (word_length) |
| 156 |
{ |
| 157 |
case 5: termios.c_cflag |= CS5; break; |
| 158 |
case 6: termios.c_cflag |= CS6; break; |
| 159 |
case 7: termios.c_cflag |= CS7; break; |
| 160 |
default: termios.c_cflag |= CS8; break; |
| 161 |
} |
| 162 |
|
| 163 |
tcsetattr(serial_fd, TCSANOW, &termios); |
| 164 |
} |
| 165 |
|
| 166 |
static NTSTATUS |
| 167 |
serial_create(HANDLE *handle) |
| 168 |
{ |
| 169 |
/* XXX do we have to handle concurrent open attempts? */ |
| 170 |
serial_fd = open("/dev/ttyS0", O_RDWR); |
| 171 |
if (serial_fd == -1) |
| 172 |
return STATUS_ACCESS_DENIED; |
| 173 |
|
| 174 |
if (!get_termios()) |
| 175 |
return STATUS_ACCESS_DENIED; |
| 176 |
|
| 177 |
*handle = 0; |
| 178 |
return STATUS_SUCCESS; |
| 179 |
} |
| 180 |
|
| 181 |
static NTSTATUS |
| 182 |
serial_close(HANDLE handle) |
| 183 |
{ |
| 184 |
close(serial_fd); |
| 185 |
return STATUS_SUCCESS; |
| 186 |
} |
| 187 |
|
| 188 |
static NTSTATUS |
| 189 |
serial_read(HANDLE handle, uint8 *data, uint32 length, uint32 *result) |
| 190 |
{ |
| 191 |
*result = read(serial_fd, data, length); |
| 192 |
return STATUS_SUCCESS; |
| 193 |
} |
| 194 |
|
| 195 |
static NTSTATUS |
| 196 |
serial_write(HANDLE handle, uint8 *data, uint32 length, uint32 *result) |
| 197 |
{ |
| 198 |
*result = write(serial_fd, data, length); |
| 199 |
return STATUS_SUCCESS; |
| 200 |
} |
| 201 |
|
| 202 |
static NTSTATUS |
| 203 |
serial_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out) |
| 204 |
{ |
| 205 |
uint32 result; |
| 206 |
uint8 immediate; |
| 207 |
|
| 208 |
if ((request >> 16) != FILE_DEVICE_SERIAL_PORT) |
| 209 |
return STATUS_INVALID_PARAMETER; |
| 210 |
|
| 211 |
/* extract operation */ |
| 212 |
request >>= 2; |
| 213 |
request &= 0xfff; |
| 214 |
|
| 215 |
printf("SERIAL IOCTL %d\n", request); |
| 216 |
|
| 217 |
switch (request) |
| 218 |
{ |
| 219 |
case SERIAL_SET_BAUD_RATE: |
| 220 |
in_uint32_le(in, baud_rate); |
| 221 |
set_termios(); |
| 222 |
break; |
| 223 |
case SERIAL_GET_BAUD_RATE: |
| 224 |
out_uint32_le(out, baud_rate); |
| 225 |
break; |
| 226 |
case SERIAL_SET_QUEUE_SIZE: |
| 227 |
in_uint32_le(in, queue_in_size); |
| 228 |
in_uint32_le(in, queue_out_size); |
| 229 |
break; |
| 230 |
case SERIAL_SET_LINE_CONTROL: |
| 231 |
in_uint8(in, stop_bits); |
| 232 |
in_uint8(in, parity); |
| 233 |
in_uint8(in, word_length); |
| 234 |
set_termios(); |
| 235 |
break; |
| 236 |
case SERIAL_GET_LINE_CONTROL: |
| 237 |
out_uint8(out, stop_bits); |
| 238 |
out_uint8(out, parity); |
| 239 |
out_uint8(out, word_length); |
| 240 |
break; |
| 241 |
case SERIAL_IMMEDIATE_CHAR: |
| 242 |
in_uint8(in, immediate); |
| 243 |
serial_write(handle, &immediate, 1, &result); |
| 244 |
break; |
| 245 |
case SERIAL_CONFIG_SIZE: |
| 246 |
out_uint32_le(out, 0); |
| 247 |
break; |
| 248 |
case SERIAL_GET_CHARS: |
| 249 |
out_uint8s(out, 6); |
| 250 |
break; |
| 251 |
case SERIAL_SET_CHARS: |
| 252 |
in_uint8s(in, 6); |
| 253 |
break; |
| 254 |
case SERIAL_GET_HANDFLOW: |
| 255 |
out_uint32_le(out, 0); |
| 256 |
out_uint32_le(out, 3); /* Xon/Xoff */ |
| 257 |
out_uint32_le(out, 0); |
| 258 |
out_uint32_le(out, 0); |
| 259 |
break; |
| 260 |
case SERIAL_SET_HANDFLOW: |
| 261 |
in_uint8s(in, 16); |
| 262 |
break; |
| 263 |
case SERIAL_SET_TIMEOUTS: |
| 264 |
in_uint8s(in, 20); |
| 265 |
break; |
| 266 |
case SERIAL_GET_TIMEOUTS: |
| 267 |
out_uint8s(out, 20); |
| 268 |
break; |
| 269 |
case SERIAL_GET_WAIT_MASK: |
| 270 |
out_uint32(out, wait_mask); |
| 271 |
break; |
| 272 |
case SERIAL_SET_WAIT_MASK: |
| 273 |
in_uint32(in, wait_mask); |
| 274 |
break; |
| 275 |
case SERIAL_SET_DTR: |
| 276 |
dtr = 1; |
| 277 |
set_termios(); |
| 278 |
break; |
| 279 |
case SERIAL_CLR_DTR: |
| 280 |
dtr = 0; |
| 281 |
set_termios(); |
| 282 |
break; |
| 283 |
#if 0 |
| 284 |
case SERIAL_WAIT_ON_MASK: |
| 285 |
/* XXX implement me */ |
| 286 |
break; |
| 287 |
case SERIAL_SET_BREAK_ON: |
| 288 |
tcsendbreak(serial_fd, 0); |
| 289 |
break; |
| 290 |
case SERIAL_PURGE: |
| 291 |
in_uint32(purge_mask); |
| 292 |
/* tcflush */ |
| 293 |
break; |
| 294 |
case SERIAL_RESET_DEVICE: |
| 295 |
case SERIAL_SET_BREAK_OFF: |
| 296 |
case SERIAL_SET_RTS: |
| 297 |
case SERIAL_CLR_RTS: |
| 298 |
case SERIAL_SET_XOFF: |
| 299 |
case SERIAL_SET_XON: |
| 300 |
/* ignore */ |
| 301 |
break; |
| 302 |
#endif |
| 303 |
|
| 304 |
default: |
| 305 |
unimpl("SERIAL IOCTL %d\n", request); |
| 306 |
return STATUS_INVALID_PARAMETER; |
| 307 |
} |
| 308 |
|
| 309 |
return STATUS_SUCCESS; |
| 310 |
} |
| 311 |
|
| 312 |
DEVICE_FNS serial_fns = |
| 313 |
{ |
| 314 |
serial_create, |
| 315 |
serial_close, |
| 316 |
serial_read, |
| 317 |
serial_write, |
| 318 |
serial_device_control |
| 319 |
}; |
| 320 |
|
Parent Directory
| 
Revision Log