1 | /* |
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2 | * Copyright (c) 1999-2003 Red Hat, Inc. All rights reserved. |
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3 | * |
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4 | * This program is free software; you can redistribute it and/or modify |
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5 | * it under the terms of the GNU General Public License, version 2, |
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6 | * as published by the Free Software Foundation. |
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7 | * |
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8 | * This program is distributed in the hope that it will be useful, |
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9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 | * GNU General Public License for more details. |
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12 | * |
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13 | * You should have received a copy of the GNU General Public License |
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14 | * along with this program; if not, write to the Free Software |
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15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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16 | * |
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17 | */ |
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18 | |
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19 | #include <fcntl.h> |
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20 | #include <stdio.h> |
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21 | #include <string.h> |
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22 | #include <unistd.h> |
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23 | #include <sys/ioctl.h> |
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24 | #include <sys/stat.h> |
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25 | #include <sys/sysmacros.h> |
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26 | |
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27 | int main(int argc, char **argv) |
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28 | { |
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29 | unsigned char twelve = 12; |
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30 | char *type; |
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31 | int maj, min, ret = 0, fg = -1; |
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32 | struct stat sb; |
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33 | |
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34 | fstat(0, &sb); |
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35 | maj = major(sb.st_rdev); |
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36 | min = minor(sb.st_rdev); |
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37 | if (maj != 3 && (maj < 136 || maj > 143)) { |
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38 | if ((fg = ioctl (0, TIOCLINUX, &twelve)) < 0) { |
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39 | type = "serial"; |
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40 | ret = 1; |
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41 | } else { |
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42 | #ifdef __powerpc__ |
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43 | int fd; |
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44 | char buf[65536]; |
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45 | |
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46 | fd = open("/proc/tty/drivers",O_RDONLY); |
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47 | read(fd, buf, 65535); |
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48 | if (strstr(buf,"vioconsole /dev/tty")) { |
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49 | type = "vio"; |
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50 | ret = 3; |
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51 | } else { |
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52 | type = "vt"; |
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53 | ret = 0; |
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54 | } |
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55 | #else |
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56 | type = "vt"; |
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57 | ret = 0; |
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58 | #endif |
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59 | } |
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60 | } else { |
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61 | type = "pty"; |
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62 | ret = 2; |
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63 | } |
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64 | if (argc > 1 && !strcmp(argv[1],"fg")) { |
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65 | if (fg < 0 || fg != (min-1)) |
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66 | return 1; |
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67 | return 0; |
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68 | } else { |
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69 | printf("%s\n",type); |
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70 | return ret; |
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71 | } |
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72 | } |
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