425 lines
13 KiB
C
425 lines
13 KiB
C
/*
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* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
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* Copyright 1993 by David Wexelblat <dwex@goblin.org>
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* Copyright 1999 by David Holland <davidh@iquest.net>
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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 copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the names of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS 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 PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#ifdef HAVE_SYS_KD_H
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#include <sys/kd.h>
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#endif
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/*
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* Applications see VT number as consecutive integers starting from 1.
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* VT number VT device
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* -------------------------------------------------------
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* 1 : /dev/vt/0 (Alt + Ctrl + F1)
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* 2 : /dev/vt/2 (Alt + Ctrl + F2)
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* 3 : /dev/vt/3 (Alt + Ctrl + F3)
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* ... ...
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*/
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#define CONSOLE_VTNO 1
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#define SOL_CONSOLE_DEV "/dev/console"
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static Bool KeepTty = FALSE;
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static Bool Protect0 = FALSE;
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static Bool UseConsole = FALSE;
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#ifdef HAS_USL_VTS
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static int VTnum = -1;
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static int xf86StartVT = -1;
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static int vtEnabled = 0;
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extern void xf86VTAcquire(int);
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extern void xf86VTRelease(int);
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#endif
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/* Device to open as xf86Info.consoleFd */
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static char consoleDev[PATH_MAX] = "/dev/fb";
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/* Set by -dev argument on CLI
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Used by hw/xfree86/common/xf86AutoConfig.c for VIS_GETIDENTIFIER */
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_X_HIDDEN char xf86SolarisFbDev[PATH_MAX] = "/dev/fb";
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static void
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switch_to(int vt, const char *from)
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{
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int ret;
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SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_ACTIVATE, vt));
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if (ret != 0)
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xf86Msg(X_WARNING, "%s: VT_ACTIVATE failed: %s\n",
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from, strerror(errno));
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SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_WAITACTIVE, vt));
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if (ret != 0)
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xf86Msg(X_WARNING, "%s: VT_WAITACTIVE failed: %s\n",
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from, strerror(errno));
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}
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void
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xf86OpenConsole(void)
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{
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int i;
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#ifdef HAS_USL_VTS
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int fd;
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struct vt_mode VT;
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struct vt_stat vtinfo;
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MessageType from = X_PROBED;
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#endif
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if (serverGeneration == 1) {
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/* Check if we're run with euid==0 */
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if (geteuid() != 0)
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FatalError("xf86OpenConsole: Server must be suid root\n");
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/* Protect page 0 to help find NULL dereferencing */
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/* mprotect() doesn't seem to work */
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if (Protect0) {
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int fd = -1;
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if ((fd = open("/dev/zero", O_RDONLY, 0)) < 0) {
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xf86Msg(X_WARNING,
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"xf86OpenConsole: cannot open /dev/zero (%s)\n",
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strerror(errno));
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}
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else {
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if (mmap(0, 0x1000, PROT_NONE,
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MAP_FIXED | MAP_SHARED, fd, 0) == MAP_FAILED)
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xf86Msg(X_WARNING,
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"xf86OpenConsole: failed to protect page 0 (%s)\n",
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strerror(errno));
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close(fd);
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}
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}
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#ifdef HAS_USL_VTS
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/*
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* Setup the virtual terminal manager
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*/
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if ((fd = open("/dev/vt/0", O_RDWR, 0)) == -1) {
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xf86ErrorF("xf86OpenConsole: Cannot open /dev/vt/0 (%s)\n",
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strerror(errno));
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vtEnabled = 0;
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}
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else {
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if (ioctl(fd, VT_ENABLED, &vtEnabled) < 0) {
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xf86ErrorF("xf86OpenConsole: VT_ENABLED failed (%s)\n",
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strerror(errno));
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vtEnabled = 0;
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}
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}
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#endif /* HAS_USL_VTS */
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if (UseConsole) {
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strlcpy(consoleDev, SOL_CONSOLE_DEV, sizeof(consoleDev));
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#ifdef HAS_USL_VTS
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xf86Info.vtno = CONSOLE_VTNO;
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if (vtEnabled == 0) {
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xf86StartVT = 0;
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}
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else {
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if (ioctl(fd, VT_GETSTATE, &vtinfo) < 0)
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FatalError
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("xf86OpenConsole: Cannot determine current VT\n");
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xf86StartVT = vtinfo.v_active;
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}
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#endif /* HAS_USL_VTS */
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goto OPENCONSOLE;
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}
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#ifdef HAS_USL_VTS
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if (vtEnabled == 0) {
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/* VT not enabled - kernel too old or Sparc platforms
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without visual_io support */
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xf86Msg(from, "VT infrastructure is not available\n");
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xf86StartVT = 0;
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xf86Info.vtno = 0;
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strlcpy(consoleDev, xf86SolarisFbDev, sizeof(consoleDev));
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goto OPENCONSOLE;
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}
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if (ioctl(fd, VT_GETSTATE, &vtinfo) < 0)
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FatalError("xf86OpenConsole: Cannot determine current VT\n");
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xf86StartVT = vtinfo.v_active;
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if (VTnum != -1) {
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xf86Info.vtno = VTnum;
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from = X_CMDLINE;
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}
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else if (xf86Info.ShareVTs) {
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xf86Info.vtno = vtinfo.v_active;
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from = X_CMDLINE;
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}
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else {
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if ((ioctl(fd, VT_OPENQRY, &xf86Info.vtno) < 0) ||
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(xf86Info.vtno == -1)) {
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FatalError("xf86OpenConsole: Cannot find a free VT\n");
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}
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}
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xf86Msg(from, "using VT number %d\n\n", xf86Info.vtno);
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snprintf(consoleDev, PATH_MAX, "/dev/vt/%d", xf86Info.vtno);
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if (fd != -1) {
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close(fd);
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}
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#endif /* HAS_USL_VTS */
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OPENCONSOLE:
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if (!KeepTty)
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setpgrp();
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if (((xf86Info.consoleFd = open(consoleDev, O_RDWR | O_NDELAY, 0)) < 0))
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FatalError("xf86OpenConsole: Cannot open %s (%s)\n",
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consoleDev, strerror(errno));
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/* Change ownership of the vt or console */
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chown(consoleDev, getuid(), getgid());
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#ifdef HAS_USL_VTS
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if (xf86Info.ShareVTs)
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return;
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if (vtEnabled) {
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/*
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* Now get the VT
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*/
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switch_to(xf86Info.vtno, "xf86OpenConsole");
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#ifdef VT_SET_CONSUSER /* added in snv_139 */
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if (strcmp(display, "0") == 0)
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if (ioctl(xf86Info.consoleFd, VT_SET_CONSUSER) != 0)
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xf86Msg(X_WARNING,
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"xf86OpenConsole: VT_SET_CONSUSER failed\n");
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#endif
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if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) < 0)
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FatalError("xf86OpenConsole: VT_GETMODE failed\n");
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OsSignal(SIGUSR1, xf86VTAcquire);
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OsSignal(SIGUSR2, xf86VTRelease);
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VT.mode = VT_PROCESS;
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VT.acqsig = SIGUSR1;
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VT.relsig = SIGUSR2;
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if (ioctl(xf86Info.consoleFd, VT_SETMODE, &VT) < 0)
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FatalError("xf86OpenConsole: VT_SETMODE VT_PROCESS failed\n");
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if (ioctl(xf86Info.consoleFd, VT_SETDISPINFO, atoi(display)) < 0)
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xf86Msg(X_WARNING, "xf86OpenConsole: VT_SETDISPINFO failed\n");
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}
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#endif
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#ifdef KDSETMODE
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SYSCALL(i = ioctl(xf86Info.consoleFd, KDSETMODE, KD_GRAPHICS));
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if (i < 0) {
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xf86Msg(X_WARNING,
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"xf86OpenConsole: KDSETMODE KD_GRAPHICS failed on %s (%s)\n",
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consoleDev, strerror(errno));
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}
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#endif
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}
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else { /* serverGeneration != 1 */
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#ifdef HAS_USL_VTS
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if (vtEnabled && !xf86Info.ShareVTs) {
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/*
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* Now re-get the VT
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*/
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if (xf86Info.autoVTSwitch)
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switch_to(xf86Info.vtno, "xf86OpenConsole");
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#ifdef VT_SET_CONSUSER /* added in snv_139 */
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if (strcmp(display, "0") == 0)
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if (ioctl(xf86Info.consoleFd, VT_SET_CONSUSER) != 0)
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xf86Msg(X_WARNING,
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"xf86OpenConsole: VT_SET_CONSUSER failed\n");
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#endif
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/*
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* If the server doesn't have the VT when the reset occurs,
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* this is to make sure we don't continue until the activate
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* signal is received.
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*/
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if (!xf86VTOwner())
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sleep(5);
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}
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#endif /* HAS_USL_VTS */
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}
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}
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void
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xf86CloseConsole(void)
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{
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#ifdef HAS_USL_VTS
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struct vt_mode VT;
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#endif
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#if !defined(__i386__) && !defined(__i386) && !defined(__x86)
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if (!xf86DoConfigure) {
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int fd;
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/*
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* Wipe out framebuffer just like the non-SI Xsun server does. This
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* could be improved by saving framebuffer contents in
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* xf86OpenConsole() above and restoring them here. Also, it's unclear
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* at this point whether this should be done for all framebuffers in
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* the system, rather than only the console.
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*/
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if ((fd = open(xf86SolarisFbDev, O_RDWR, 0)) < 0) {
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xf86Msg(X_WARNING,
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"xf86CloseConsole(): unable to open framebuffer (%s)\n",
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strerror(errno));
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}
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else {
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struct fbgattr fbattr;
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if ((ioctl(fd, FBIOGATTR, &fbattr) < 0) &&
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(ioctl(fd, FBIOGTYPE, &fbattr.fbtype) < 0)) {
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xf86Msg(X_WARNING,
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"xf86CloseConsole(): unable to retrieve framebuffer"
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" attributes (%s)\n", strerror(errno));
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}
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else {
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void *fbdata;
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fbdata = mmap(NULL, fbattr.fbtype.fb_size,
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PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (fbdata == MAP_FAILED) {
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xf86Msg(X_WARNING,
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"xf86CloseConsole(): unable to mmap framebuffer"
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" (%s)\n", strerror(errno));
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}
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else {
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memset(fbdata, 0, fbattr.fbtype.fb_size);
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munmap(fbdata, fbattr.fbtype.fb_size);
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}
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}
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close(fd);
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}
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}
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#endif
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#ifdef KDSETMODE
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/* Reset the display back to text mode */
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SYSCALL(ioctl(xf86Info.consoleFd, KDSETMODE, KD_TEXT));
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#endif
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#ifdef HAS_USL_VTS
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if (vtEnabled) {
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if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) != -1) {
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VT.mode = VT_AUTO; /* Set default vt handling */
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ioctl(xf86Info.consoleFd, VT_SETMODE, &VT);
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}
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/* Activate the VT that X was started on */
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if (xf86Info.autoVTSwitch)
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switch_to(xf86StartVT, "xf86CloseConsole");
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}
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#endif /* HAS_USL_VTS */
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close(xf86Info.consoleFd);
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}
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int
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xf86ProcessArgument(int argc, char **argv, int i)
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{
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/*
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* Keep server from detaching from controlling tty. This is useful when
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* debugging, so the server can receive keyboard signals.
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*/
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if (!strcmp(argv[i], "-keeptty")) {
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KeepTty = TRUE;
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return 1;
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}
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/*
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* Undocumented flag to protect page 0 from read/write to help catch NULL
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* pointer dereferences. This is purely a debugging flag.
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*/
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if (!strcmp(argv[i], "-protect0")) {
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Protect0 = TRUE;
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return 1;
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}
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/*
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* Use /dev/console as the console device.
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*/
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if (!strcmp(argv[i], "-C")) {
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UseConsole = TRUE;
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return 1;
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}
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#ifdef HAS_USL_VTS
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if ((argv[i][0] == 'v') && (argv[i][1] == 't')) {
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if (sscanf(argv[i], "vt%d", &VTnum) == 0) {
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UseMsg();
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VTnum = -1;
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return 0;
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}
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return 1;
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}
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#endif /* HAS_USL_VTS */
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if ((i + 1) < argc) {
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if (!strcmp(argv[i], "-dev")) {
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strlcpy(xf86SolarisFbDev, argv[i + 1], sizeof(xf86SolarisFbDev));
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return 2;
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}
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}
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return 0;
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}
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void
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xf86UseMsg(void)
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{
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#ifdef HAS_USL_VTS
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ErrorF("vtX Use the specified VT number\n");
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#endif
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ErrorF("-dev <fb> Framebuffer device\n");
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ErrorF("-keeptty Don't detach controlling tty\n");
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ErrorF(" (for debugging only)\n");
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ErrorF("-C Use /dev/console as the console device\n");
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}
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