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Diffstat (limited to 'hw/xfree86/os-support/linux/lnx_init.c')
-rw-r--r--hw/xfree86/os-support/linux/lnx_init.c330
1 files changed, 330 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/linux/lnx_init.c b/hw/xfree86/os-support/linux/lnx_init.c
new file mode 100644
index 0000000..9c71a42
--- /dev/null
+++ b/hw/xfree86/os-support/linux/lnx_init.c
@@ -0,0 +1,330 @@
+/*
+ * Copyright 1992 by Orest Zborowski <obz@Kodak.com>
+ * Copyright 1993 by David Wexelblat <dwex@goblin.org>
+ *
+ * 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.
+ *
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xmd.h>
+
+#include "compiler.h"
+
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "xf86_OSlib.h"
+
+#include <sys/stat.h>
+
+static Bool KeepTty = FALSE;
+static Bool VTSwitch = TRUE;
+static Bool ShareVTs = FALSE;
+static int activeVT = -1;
+
+static char vtname[11];
+static struct termios tty_attr; /* tty state to restore */
+static int tty_mode; /* kbd mode to restore */
+
+static void *console_handler;
+
+static void
+drain_console(int fd, void *closure)
+{
+ errno = 0;
+ if (tcflush(fd, TCIOFLUSH) == -1 && errno == EIO) {
+ xf86RemoveGeneralHandler(console_handler);
+ console_handler = NULL;
+ }
+}
+
+static void
+switch_to(int vt, const char *from)
+{
+ if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, vt) < 0)
+ FatalError("%s: VT_ACTIVATE failed: %s\n", from, strerror(errno));
+
+ if (ioctl(xf86Info.consoleFd, VT_WAITACTIVE, vt) < 0)
+ FatalError("%s: VT_WAITACTIVE failed: %s\n", from, strerror(errno));
+}
+
+void
+xf86OpenConsole(void)
+{
+ int i, fd = -1;
+ struct vt_mode VT;
+ struct vt_stat vts;
+ MessageType from = X_PROBED;
+ char *tty0[] = { "/dev/tty0", "/dev/vc/0", NULL };
+ char *vcs[] = { "/dev/vc/%d", "/dev/tty%d", NULL };
+
+ if (serverGeneration == 1) {
+
+ /* when KeepTty check if we're run with euid==0 */
+ if (KeepTty && geteuid() != 0)
+ FatalError("xf86OpenConsole:"
+ " Server must be suid root for option \"KeepTTY\"\n");
+
+ /*
+ * setup the virtual terminal manager
+ */
+ if (xf86Info.vtno != -1) {
+ from = X_CMDLINE;
+ } else {
+
+ i=0;
+ while (tty0[i] != NULL) {
+ if ((fd = open(tty0[i],O_WRONLY,0)) >= 0)
+ break;
+ i++;
+ }
+
+ if (fd < 0)
+ FatalError(
+ "xf86OpenConsole: Cannot open /dev/tty0 (%s)\n",
+ strerror(errno));
+
+ if (ShareVTs)
+ {
+ if (ioctl(fd, VT_GETSTATE, &vts) == 0)
+ xf86Info.vtno = vts.v_active;
+ else
+ FatalError("xf86OpenConsole: Cannot find the current"
+ " VT (%s)\n", strerror(errno));
+ } else {
+ if ((ioctl(fd, VT_OPENQRY, &xf86Info.vtno) < 0) ||
+ (xf86Info.vtno == -1))
+ FatalError("xf86OpenConsole: Cannot find a free VT: %s\n",
+ strerror(errno));
+ }
+ close(fd);
+ }
+
+ xf86Msg(from, "using VT number %d\n\n", xf86Info.vtno);
+
+ if (!KeepTty) {
+ pid_t ppid = getppid();
+ pid_t ppgid;
+ ppgid = getpgid(ppid);
+
+ /*
+ * change to parent process group that pgid != pid so
+ * that setsid() doesn't fail and we become process
+ * group leader
+ */
+ if (setpgid(0,ppgid) < 0)
+ xf86Msg(X_WARNING, "xf86OpenConsole: setpgid failed: %s\n",
+ strerror(errno));
+
+ /* become process group leader */
+ if ((setsid() < 0))
+ xf86Msg(X_WARNING, "xf86OpenConsole: setsid failed: %s\n",
+ strerror(errno));
+ }
+
+ i=0;
+ while (vcs[i] != NULL) {
+ sprintf(vtname, vcs[i], xf86Info.vtno); /* /dev/tty1-64 */
+ if ((xf86Info.consoleFd = open(vtname, O_RDWR|O_NDELAY, 0)) >= 0)
+ break;
+ i++;
+ }
+
+ if (xf86Info.consoleFd < 0)
+ FatalError("xf86OpenConsole: Cannot open virtual console"
+ " %d (%s)\n", xf86Info.vtno, strerror(errno));
+
+ /*
+ * 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)
+ xf86Msg(X_WARNING,"xf86OpenConsole: VT_GETSTATE failed: %s\n",
+ strerror(errno));
+ else
+ activeVT = vts.v_active;
+
+#if 0
+ 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);
+ }
+ }
+#endif
+
+ if (!ShareVTs)
+ {
+ struct termios nTty;
+
+ /*
+ * now get the VT. This _must_ succeed, or else fail completely.
+ */
+ switch_to(xf86Info.vtno, "xf86OpenConsole");
+
+ if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) < 0)
+ FatalError("xf86OpenConsole: VT_GETMODE failed %s\n",
+ strerror(errno));
+
+ 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: %s\n",
+ strerror(errno));
+
+ if (ioctl(xf86Info.consoleFd, KDSETMODE, KD_GRAPHICS) < 0)
+ FatalError("xf86OpenConsole: KDSETMODE KD_GRAPHICS failed %s\n",
+ strerror(errno));
+
+ tcgetattr(xf86Info.consoleFd, &tty_attr);
+ ioctl(xf86Info.consoleFd, KDGKBMODE, &tty_mode);
+
+ if (ioctl(xf86Info.consoleFd, KDSKBMODE, K_RAW) < 0)
+ FatalError("xf86OpenConsole: KDSKBMODE K_RAW failed %s\n",
+ strerror(errno));
+
+ nTty = tty_attr;
+ nTty.c_iflag = (IGNPAR | IGNBRK) & (~PARMRK) & (~ISTRIP);
+ nTty.c_oflag = 0;
+ nTty.c_cflag = CREAD | CS8;
+ nTty.c_lflag = 0;
+ nTty.c_cc[VTIME]=0;
+ nTty.c_cc[VMIN]=1;
+ cfsetispeed(&nTty, 9600);
+ cfsetospeed(&nTty, 9600);
+ tcsetattr(xf86Info.consoleFd, TCSANOW, &nTty);
+
+ /* need to keep the buffer clean, else the kernel gets angry */
+ xf86SetConsoleHandler(drain_console, NULL);
+
+ /* we really should have a InitOSInputDevices() function instead
+ * of Init?$#*&Device(). So I just place it here */
+ }
+ } else { /* serverGeneration != 1 */
+ if (!ShareVTs && VTSwitch)
+ {
+ /* now get the VT */
+ switch_to(xf86Info.vtno, "xf86OpenConsole");
+ }
+ }
+}
+
+void
+xf86CloseConsole(void)
+{
+ struct vt_mode VT;
+
+ if (ShareVTs) {
+ close(xf86Info.consoleFd);
+ return;
+ }
+
+ if (console_handler) {
+ xf86RemoveGeneralHandler(console_handler);
+ console_handler = NULL;
+ };
+
+ /* Back to text mode ... */
+ if (ioctl(xf86Info.consoleFd, KDSETMODE, KD_TEXT) < 0)
+ xf86Msg(X_WARNING, "xf86CloseConsole: KDSETMODE failed: %s\n",
+ strerror(errno));
+
+ ioctl(xf86Info.consoleFd, KDSKBMODE, tty_mode);
+ tcsetattr(xf86Info.consoleFd, TCSANOW, &tty_attr);
+
+ if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) < 0)
+ xf86Msg(X_WARNING, "xf86CloseConsole: VT_GETMODE failed: %s\n",
+ strerror(errno));
+ else {
+ /* set dflt vt handling */
+ VT.mode = VT_AUTO;
+ if (ioctl(xf86Info.consoleFd, VT_SETMODE, &VT) < 0)
+ xf86Msg(X_WARNING, "xf86CloseConsole: VT_SETMODE failed: %s\n",
+ strerror(errno));
+ }
+
+ if (VTSwitch)
+ {
+ /*
+ * Perform a switch back to the active VT when we were started
+ */
+ if (activeVT >= 0) {
+ switch_to(activeVT, "xf86CloseConsole");
+ activeVT = -1;
+ }
+ }
+ close(xf86Info.consoleFd); /* make the vt-manager happy */
+}
+
+int
+xf86ProcessArgument(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 (!strcmp(argv[i], "-novtswitch"))
+ {
+ VTSwitch = FALSE;
+ return 1;
+ }
+ if (!strcmp(argv[i], "-sharevts"))
+ {
+ ShareVTs = TRUE;
+ return 1;
+ }
+ if ((argv[i][0] == 'v') && (argv[i][1] == 't'))
+ {
+ if (sscanf(argv[i], "vt%2d", &xf86Info.vtno) == 0)
+ {
+ UseMsg();
+ xf86Info.vtno = -1;
+ return 0;
+ }
+ return 1;
+ }
+ return 0;
+}
+
+void
+xf86UseMsg(void)
+{
+ ErrorF("vtXX use the specified VT number\n");
+ ErrorF("-keeptty ");
+ ErrorF("don't detach controlling tty (for debugging only)\n");
+ ErrorF("-novtswitch don't immediately switch to new VT\n");
+ ErrorF("-sharevts share VTs with another X server\n");
+}
contact: Jan Huwald // Impressum