67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
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/*
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* Copyright (c) 1999-2003 Red Hat, Inc. All rights reserved.
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*
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* This software may be freely redistributed under the terms of the GNU
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* public license.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/sysmacros.h>
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int main(int argc, char **argv)
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{
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unsigned char twelve = 12;
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char *type;
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int maj, min, ret = 0, fg = -1;
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struct stat sb;
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fstat(0, &sb);
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maj = major(sb.st_rdev);
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min = minor(sb.st_rdev);
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if (maj != 3 && (maj < 136 || maj > 143)) {
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if ((fg = ioctl (0, TIOCLINUX, &twelve)) < 0) {
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type = "serial";
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ret = 1;
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} else {
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#ifdef __powerpc__
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int fd;
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char buf[65536];
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fd = open("/proc/tty/drivers",O_RDONLY);
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read(fd, buf, 65535);
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if (strstr(buf,"vioconsole /dev/tty")) {
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type = "vio";
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ret = 3;
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} else {
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type = "vt";
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ret = 0;
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}
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#else
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type = "vt";
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ret = 0;
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#endif
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}
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} else {
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type = "pty";
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ret = 2;
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}
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if (argc > 1 && !strcmp(argv[1],"fg")) {
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if (fg < 0 || fg != (min-1))
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return 1;
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return 0;
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} else {
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printf("%s\n",type);
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return ret;
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}
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}
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