8bde7f776c
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
/*
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* Copyright 1999 Egbert Eich
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the authors not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. The authors makes no representations
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* about the suitability of this software for any purpose. It is provided
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* "as is" without express or implied warranty.
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*
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* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/ioctl.h>
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#include <sys/vt.h>
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#include <sys/kd.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "debug.h"
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#include "v86bios.h"
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console
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open_console(void)
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{
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int fd;
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int VTno;
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char VTname[11];
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console Con = {-1,-1};
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struct vt_stat vts;
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if (NO_CONSOLE)
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return Con;
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if ((fd = open("/dev/tty0",O_WRONLY,0)) < 0)
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return Con;
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if ((ioctl(fd, VT_OPENQRY, &VTno) < 0) || (VTno == -1)) {
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fprintf(stderr,"cannot get a vt\n");
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return Con;
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}
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close(fd);
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sprintf(VTname,"/dev/tty%i",VTno);
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if ((fd = open(VTname, O_RDWR|O_NDELAY, 0)) < 0) {
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fprintf(stderr,"cannot open console\n");
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return Con;
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}
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if (ioctl(fd, VT_GETSTATE, &vts) == 0)
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Con.vt = vts.v_active;
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if (ioctl(fd, VT_ACTIVATE, VTno) != 0) {
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fprintf(stderr,"cannot activate console\n");
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close(fd);
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return Con;
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}
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if (ioctl(fd, VT_WAITACTIVE, VTno) != 0) {
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fprintf(stderr,"wait for active console failed\n");
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close(fd);
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return Con;
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}
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#if 0
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if (ioctl(fd, KDSETMODE, KD_GRAPHICS) < 0) {
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close(fd);
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return Con;
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}
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#endif
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Con.fd = fd;
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return Con;
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}
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void
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close_console(console Con)
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{
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if (Con.fd == -1)
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return;
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#if 0
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ioctl(Con.fd, KDSETMODE, KD_TEXT);
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#endif
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if (Con.vt >=0)
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ioctl(Con.fd, VT_ACTIVATE, Con.vt);
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close(Con.fd);
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}
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