/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/lnx_init.c,v 3.7.2.3 1998/02/06 22:36:51 hohndel Exp $ */ /* * Copyright 1992 by Orest Zborowski * Copyright 1993 by David Wexelblat * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the names of Orest Zborowski and David Wexelblat * not be used in advertising or publicity pertaining to distribution of * the software without specific, written prior permission. Orest Zborowski * and David Wexelblat make no representations about the suitability of this * software for any purpose. It is provided "as is" without express or * implied warranty. * * OREST ZBOROWSKI AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS, IN NO EVENT SHALL OREST ZBOROWSKI OR DAVID WEXELBLAT BE LIABLE * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * */ /* $Xorg: lnx_init.c,v 1.3 2000/08/17 19:51:23 cpqbld Exp $ */ #include "X.h" #include "Xmd.h" #include "input.h" #include "scrnintstr.h" #include "compiler.h" #include "xf86.h" #include "xf86Procs.h" #include "xf86_OSlib.h" #ifdef USE_DEV_FB extern char *getenv(const char *); #include char *fb_dev_name; #endif static Bool KeepTty = FALSE; static int VTnum = -1; static int activeVT = -1; extern void xf86VTRequest( #if NeedFunctionPrototypes int #endif ); void xf86OpenConsole() { int i, fd; struct vt_mode VT; char vtname[11]; struct vt_stat vts; #ifdef USE_DEV_FB struct fb_var_screeninfo var; int fbfd; #endif if (serverGeneration == 1) { /* check if we're run with euid==0 */ if (geteuid() != 0) { FatalError("xf86OpenConsole: Server must be running with root " "permissions\n" "You should be using Xwrapper to start the server or xdm.\n" "We strongly advise against making the server SUID root!\n"); } /* * setup the virtual terminal manager */ if (VTnum != -1) { xf86Info.vtno = VTnum; } else { if ((fd = open("/dev/tty0",O_WRONLY,0)) < 0) { FatalError( "xf86OpenConsole: Cannot open /dev/tty0 (%s)\n", strerror(errno)); } if ((ioctl(fd, VT_OPENQRY, &xf86Info.vtno) < 0) || (xf86Info.vtno == -1)) { FatalError("xf86OpenConsole: Cannot find a free VT\n"); } close(fd); } #ifdef USE_DEV_FB fb_dev_name=getenv("FRAMEBUFFER"); if (!fb_dev_name) fb_dev_name="/dev/fb0current"; if ((fbfd = open(fb_dev_name, O_RDONLY)) < 0) FatalError("xf86OpenConsole: Cannot open %s (%s)\n", fb_dev_name, strerror(errno)); if (ioctl(fbfd, FBIOGET_VSCREENINFO, &var)) FatalError("xf86OpenConsole: Unable to get screen info\n"); #endif ErrorF("(using VT number %d)\n\n", xf86Info.vtno); sprintf(vtname,"/dev/tty%d",xf86Info.vtno); /* /dev/tty1-64 */ xf86Config(FALSE); /* Read XF86Config */ if (!KeepTty) { setpgrp(); } if ((xf86Info.consoleFd = open(vtname, O_RDWR|O_NDELAY, 0)) < 0) { FatalError("xf86OpenConsole: Cannot open %s (%s)\n", vtname, strerror(errno)); } /* change ownership of the vt */ chown(vtname, getuid(), getgid()); /* * the current VT device we're running on is not "console", we want * to grab all consoles too * * Why is this needed? */ chown("/dev/tty0", getuid(), getgid()); /* * Linux doesn't switch to an active vt after the last close of a vt, * so we do this ourselves by remembering which is active now. */ if (ioctl(xf86Info.consoleFd, VT_GETSTATE, &vts) == 0) { activeVT = vts.v_active; } if (!KeepTty) { /* * Detach from the controlling tty to avoid char loss */ if ((i = open("/dev/tty",O_RDWR)) >= 0) { ioctl(i, TIOCNOTTY, 0); close(i); } } /* * now get the VT */ if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) != 0) { ErrorF("xf86OpenConsole: VT_ACTIVATE failed\n"); } if (ioctl(xf86Info.consoleFd, VT_WAITACTIVE, xf86Info.vtno) != 0) { ErrorF("xf86OpenConsole: VT_WAITACTIVE failed\n"); } if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) < 0) { FatalError ("xf86OpenConsole: VT_GETMODE failed\n"); } signal(SIGUSR1, xf86VTRequest); VT.mode = VT_PROCESS; VT.relsig = SIGUSR1; VT.acqsig = SIGUSR1; if (ioctl(xf86Info.consoleFd, VT_SETMODE, &VT) < 0) { FatalError("xf86OpenConsole: VT_SETMODE VT_PROCESS failed\n"); } if (ioctl(xf86Info.consoleFd, KDSETMODE, KD_GRAPHICS) < 0) { FatalError("xf86OpenConsole: KDSETMODE KD_GRAPHICS failed\n"); } #ifdef USE_DEV_FB /* copy info to new console */ var.yoffset=0; var.xoffset=0; if (ioctl(fbfd, FBIOPUT_VSCREENINFO, &var)) FatalError("Unable to set screen info\n"); close(fbfd); #endif } else { /* serverGeneration != 1 */ /* * now get the VT */ if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) != 0) { ErrorF("xf86OpenConsole: VT_ACTIVATE failed\n"); } if (ioctl(xf86Info.consoleFd, VT_WAITACTIVE, xf86Info.vtno) != 0) { ErrorF("xf86OpenConsole: VT_WAITACTIVE failed\n"); } } return; } void xf86CloseConsole() { struct vt_mode VT; #if 0 ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno); ioctl(xf86Info.consoleFd, VT_WAITACTIVE, 0); #endif ioctl(xf86Info.consoleFd, KDSETMODE, KD_TEXT); /* Back to text mode ... */ if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) != -1) { VT.mode = VT_AUTO; ioctl(xf86Info.consoleFd, VT_SETMODE, &VT); /* set dflt vt handling */ } /* * Perform a switch back to the active VT when we were started */ if (activeVT >= 0) { ioctl(xf86Info.consoleFd, VT_ACTIVATE, activeVT); activeVT = -1; } close(xf86Info.consoleFd); /* make the vt-manager happy */ return; } int xf86ProcessArgument (argc, argv, i) int argc; char *argv[]; int i; { /* * Keep server from detaching from controlling tty. This is useful * when debugging (so the server can receive keyboard signals. */ if (!strcmp(argv[i], "-keeptty")) { KeepTty = TRUE; return(1); } if ((argv[i][0] == 'v') && (argv[i][1] == 't')) { if (sscanf(argv[i], "vt%2d", &VTnum) == 0) { UseMsg(); VTnum = -1; return(0); } return(1); } return(0); } void xf86UseMsg() { ErrorF("vtXX use the specified VT number\n"); ErrorF("-keeptty "); ErrorF("don't detach controlling tty (for debugging only)\n"); return; }