e884ff8ad4
No idea what this was referring to but it goes past git history. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
332 lines
10 KiB
C
332 lines
10 KiB
C
/*
|
|
* 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 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
|
|
drain_console(int fd, void *closure)
|
|
{
|
|
errno = 0;
|
|
if (tcflush(fd, TCIOFLUSH) == -1 && errno == EIO) {
|
|
xf86SetConsoleHandler(NULL, NULL);
|
|
}
|
|
}
|
|
|
|
static void
|
|
switch_to(int vt, const char *from)
|
|
{
|
|
int ret;
|
|
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_ACTIVATE, vt));
|
|
if (ret < 0)
|
|
FatalError("%s: VT_ACTIVATE failed: %s\n", from, strerror(errno));
|
|
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_WAITACTIVE, vt));
|
|
if (ret < 0)
|
|
FatalError("%s: VT_WAITACTIVE failed: %s\n", from, strerror(errno));
|
|
}
|
|
|
|
void
|
|
xf86OpenConsole(void)
|
|
{
|
|
int i, fd = -1, ret;
|
|
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 (xf86Info.ShareVTs) {
|
|
SYSCALL(ret = ioctl(fd, VT_GETSTATE, &vts));
|
|
if (ret < 0)
|
|
FatalError("xf86OpenConsole: Cannot find the current"
|
|
" VT (%s)\n", strerror(errno));
|
|
xf86Info.vtno = vts.v_active;
|
|
}
|
|
else {
|
|
SYSCALL(ret = ioctl(fd, VT_OPENQRY, &xf86Info.vtno));
|
|
if (ret < 0)
|
|
FatalError("xf86OpenConsole: Cannot find a free VT: "
|
|
"%s\n", strerror(errno));
|
|
if (xf86Info.vtno == -1)
|
|
FatalError("xf86OpenConsole: Cannot find a free VT\n");
|
|
}
|
|
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) {
|
|
snprintf(vtname, sizeof(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.
|
|
*/
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_GETSTATE, &vts));
|
|
if (ret < 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) {
|
|
SYSCALL(ioctl(i, TIOCNOTTY, 0));
|
|
close(i);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (!xf86Info.ShareVTs) {
|
|
struct termios nTty;
|
|
|
|
/*
|
|
* now get the VT. This _must_ succeed, or else fail completely.
|
|
*/
|
|
switch_to(xf86Info.vtno, "xf86OpenConsole");
|
|
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_GETMODE, &VT));
|
|
if (ret < 0)
|
|
FatalError("xf86OpenConsole: VT_GETMODE failed %s\n",
|
|
strerror(errno));
|
|
|
|
signal(SIGUSR1, xf86VTRequest);
|
|
|
|
VT.mode = VT_PROCESS;
|
|
VT.relsig = SIGUSR1;
|
|
VT.acqsig = SIGUSR1;
|
|
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_SETMODE, &VT));
|
|
if (ret < 0)
|
|
FatalError
|
|
("xf86OpenConsole: VT_SETMODE VT_PROCESS failed: %s\n",
|
|
strerror(errno));
|
|
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, KDSETMODE, KD_GRAPHICS));
|
|
if (ret < 0)
|
|
FatalError("xf86OpenConsole: KDSETMODE KD_GRAPHICS failed %s\n",
|
|
strerror(errno));
|
|
|
|
tcgetattr(xf86Info.consoleFd, &tty_attr);
|
|
SYSCALL(ioctl(xf86Info.consoleFd, KDGKBMODE, &tty_mode));
|
|
|
|
#ifdef K_OFF
|
|
/* disable kernel special keys and buffering */
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, KDSKBMODE, K_OFF));
|
|
if (ret < 0)
|
|
#endif
|
|
{
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, KDSKBMODE, K_RAW));
|
|
if (ret < 0)
|
|
FatalError("xf86OpenConsole: KDSKBMODE K_RAW failed %s\n",
|
|
strerror(errno));
|
|
|
|
/* need to keep the buffer clean, else the kernel gets angry */
|
|
xf86SetConsoleHandler(drain_console, NULL);
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
else { /* serverGeneration != 1 */
|
|
if (!xf86Info.ShareVTs && xf86Info.autoVTSwitch) {
|
|
/* now get the VT */
|
|
switch_to(xf86Info.vtno, "xf86OpenConsole");
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
xf86CloseConsole(void)
|
|
{
|
|
struct vt_mode VT;
|
|
int ret;
|
|
|
|
if (xf86Info.ShareVTs) {
|
|
close(xf86Info.consoleFd);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* unregister the drain_console handler
|
|
* - what to do if someone else changed it in the meantime?
|
|
*/
|
|
xf86SetConsoleHandler(NULL, NULL);
|
|
|
|
/* Back to text mode ... */
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, KDSETMODE, KD_TEXT));
|
|
if (ret < 0)
|
|
xf86Msg(X_WARNING, "xf86CloseConsole: KDSETMODE failed: %s\n",
|
|
strerror(errno));
|
|
|
|
SYSCALL(ioctl(xf86Info.consoleFd, KDSKBMODE, tty_mode));
|
|
tcsetattr(xf86Info.consoleFd, TCSANOW, &tty_attr);
|
|
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_GETMODE, &VT));
|
|
if (ret < 0)
|
|
xf86Msg(X_WARNING, "xf86CloseConsole: VT_GETMODE failed: %s\n",
|
|
strerror(errno));
|
|
else {
|
|
/* set dflt vt handling */
|
|
VT.mode = VT_AUTO;
|
|
SYSCALL(ret = ioctl(xf86Info.consoleFd, VT_SETMODE, &VT));
|
|
if (ret < 0)
|
|
xf86Msg(X_WARNING, "xf86CloseConsole: VT_SETMODE failed: %s\n",
|
|
strerror(errno));
|
|
}
|
|
|
|
if (xf86Info.autoVTSwitch) {
|
|
/*
|
|
* 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 ((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");
|
|
}
|