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xserver/hw/xfree86/os-support/bsd/bsd_init.c

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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bsd/bsd_init.c,v 3.22 2003/10/07 23:14:55 herrb Exp $ */
/*
* Copyright 1992 by Rich Murphey <Rich@Rice.edu>
* 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 Rich Murphey and David Wexelblat
* not be used in advertising or publicity pertaining to distribution of
* the software without specific, written prior permission. Rich Murphey 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.
*
* RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RICH MURPHEY 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.
*
*/
/* $XConsortium: bsd_init.c /main/8 1996/10/23 13:13:05 kaleb $ */
#include "X.h"
#include "compiler.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include <sys/utsname.h>
#include <stdlib.h>
static Bool KeepTty = FALSE;
static int devConsoleFd = -1;
#if defined (SYSCONS_SUPPORT) || defined (PCVT_SUPPORT)
static int VTnum = -1;
static int initialVT = -1;
#endif
#ifdef PCCONS_SUPPORT
/* Stock 0.1 386bsd pccons console driver interface */
#ifndef __OpenBSD__
# define PCCONS_CONSOLE_DEV1 "/dev/ttyv0"
#else
# define PCCONS_CONSOLE_DEV1 "/dev/ttyC0"
#endif
#define PCCONS_CONSOLE_DEV2 "/dev/vga"
#define PCCONS_CONSOLE_MODE O_RDWR|O_NDELAY
#endif
#ifdef SYSCONS_SUPPORT
/* The FreeBSD 1.1 version syscons driver uses /dev/ttyv0 */
#define SYSCONS_CONSOLE_DEV1 "/dev/ttyv0"
#define SYSCONS_CONSOLE_DEV2 "/dev/vga"
#define SYSCONS_CONSOLE_MODE O_RDWR|O_NDELAY
#endif
#ifdef PCVT_SUPPORT
/* Hellmuth Michaelis' pcvt driver */
#ifndef __OpenBSD__
# define PCVT_CONSOLE_DEV "/dev/ttyv0"
#else
# define PCVT_CONSOLE_DEV "/dev/ttyC0"
#endif
#define PCVT_CONSOLE_MODE O_RDWR|O_NDELAY
#endif
#if defined(WSCONS_SUPPORT) && defined(__NetBSD__)
/* NetBSD's new console driver */
#define WSCONS_PCVT_COMPAT_CONSOLE_DEV "/dev/ttyE0"
#endif
#define CHECK_DRIVER_MSG \
"Check your kernel's console driver configuration and /dev entries"
static char *supported_drivers[] = {
#ifdef PCCONS_SUPPORT
"pccons (with X support)",
#endif
#ifdef SYSCONS_SUPPORT
"syscons",
#endif
#ifdef PCVT_SUPPORT
"pcvt",
#endif
#ifdef WSCONS_SUPPORT
"wscons",
#endif
};
/*
* Functions to probe for the existance of a supported console driver.
* Any function returns either a valid file descriptor (driver probed
* succesfully), -1 (driver not found), or uses FatalError() if the
* driver was found but proved to not support the required mode to run
* an X server.
*/
typedef int (*xf86ConsOpen_t)(void);
#ifdef PCCONS_SUPPORT
static int xf86OpenPccons(void);
#endif /* PCCONS_SUPPORT */
#ifdef SYSCONS_SUPPORT
static int xf86OpenSyscons(void);
#endif /* SYSCONS_SUPPORT */
#ifdef PCVT_SUPPORT
static int xf86OpenPcvt(void);
#endif /* PCVT_SUPPORT */
#ifdef WSCONS_SUPPORT
static int xf86OpenWScons(void);
#endif
/*
* The sequence of the driver probes is important; start with the
* driver that is best distinguishable, and end with the most generic
* driver. (Otherwise, pcvt would also probe as syscons, and either
* pcvt or syscons might succesfully probe as pccons.)
*/
static xf86ConsOpen_t xf86ConsTab[] = {
#ifdef PCVT_SUPPORT
xf86OpenPcvt,
#endif
#ifdef SYSCONS_SUPPORT
xf86OpenSyscons,
#endif
#ifdef PCCONS_SUPPORT
xf86OpenPccons,
#endif
#ifdef WSCONS_SUPPORT
xf86OpenWScons,
#endif
(xf86ConsOpen_t)NULL
};
void
xf86OpenConsole()
{
int i, fd = -1;
xf86ConsOpen_t *driver;
#if defined (SYSCONS_SUPPORT) || defined (PCVT_SUPPORT)
int result;
struct utsname uts;
vtmode_t vtmode;
#endif
if (serverGeneration == 1)
{
/* check if we are run with euid==0 */
if (geteuid() != 0)
{
FatalError("xf86OpenConsole: Server must be suid root");
}
if (!KeepTty)
{
/*
* detaching the controlling tty solves problems of kbd character
* loss. This is not interesting for CO driver, because it is
* exclusive.
*/
setpgrp(0, getpid());
if ((i = open("/dev/tty",O_RDWR)) >= 0)
{
ioctl(i,TIOCNOTTY,(char *)0);
close(i);
}
}
/* detect which driver we are running on */
for (driver = xf86ConsTab; *driver; driver++)
{
if ((fd = (*driver)()) >= 0)
break;
}
/* Check that a supported console driver was found */
if (fd < 0)
{
char cons_drivers[80] = {0, };
for (i = 0; i < sizeof(supported_drivers) / sizeof(char *); i++)
{
if (i)
{
strcat(cons_drivers, ", ");
}
strcat(cons_drivers, supported_drivers[i]);
}
FatalError(
"%s: No console driver found\n\tSupported drivers: %s\n\t%s",
"xf86OpenConsole", cons_drivers, CHECK_DRIVER_MSG);
}
#if 0 /* stdin is already closed in OsInit() */
fclose(stdin);
#endif
xf86Info.consoleFd = fd;
xf86Info.screenFd = fd;
switch (xf86Info.consType)
{
#ifdef PCCONS_SUPPORT
case PCCONS:
if (ioctl (xf86Info.consoleFd, CONSOLE_X_MODE_ON, 0) < 0)
{
FatalError("%s: CONSOLE_X_MODE_ON failed (%s)\n%s",
"xf86OpenConsole", strerror(errno),
CHECK_DRIVER_MSG);
}
/*
* Hack to prevent keyboard hanging when syslogd closes
* /dev/console
*/
if ((devConsoleFd = open("/dev/console", O_WRONLY,0)) < 0)
{
xf86Msg(X_WARNING,
"xf86OpenConsole: couldn't open /dev/console (%s)\n",
strerror(errno));
}
break;
#endif
#if defined (SYSCONS_SUPPORT) || defined (PCVT_SUPPORT)
case SYSCONS:
/* as of FreeBSD 2.2.8, syscons driver does not need the #1 vt
* switching anymore. Here we check for FreeBSD 3.1 and up.
* Add cases for other *BSD that behave the same.
*/
uname (&uts);
if (strcmp(uts.sysname, "FreeBSD") == 0) {
i = atof(uts.release) * 100;
if (i >= 310) goto acquire_vt;
}
/* otherwise fall through */
case PCVT:
/*
* First activate the #1 VT. This is a hack to allow a server
* to be started while another one is active. There should be
* a better way.
*/
if (initialVT != 1) {
if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, 1) != 0)
{
xf86Msg(X_WARNING,
"xf86OpenConsole: VT_ACTIVATE failed\n");
}
sleep(1);
}
acquire_vt:
/*
* now get the VT
*/
SYSCALL(result =
ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno));
if (result != 0)
{
xf86Msg(X_WARNING, "xf86OpenConsole: VT_ACTIVATE failed\n");
}
SYSCALL(result =
ioctl(xf86Info.consoleFd, VT_WAITACTIVE, xf86Info.vtno));
if (result != 0)
{
xf86Msg(X_WARNING, "xf86OpenConsole: VT_WAITACTIVE failed\n");
}
signal(SIGUSR1, xf86VTRequest);
vtmode.mode = VT_PROCESS;
vtmode.relsig = SIGUSR1;
vtmode.acqsig = SIGUSR1;
vtmode.frsig = SIGUSR1;
if (ioctl(xf86Info.consoleFd, VT_SETMODE, &vtmode) < 0)
{
FatalError("xf86OpenConsole: VT_SETMODE VT_PROCESS failed");
}
#if !defined(USE_DEV_IO) && !defined(USE_I386_IOPL)
if (ioctl(xf86Info.consoleFd, KDENABIO, 0) < 0)
{
FatalError("xf86OpenConsole: KDENABIO failed (%s)",
strerror(errno));
}
#endif
if (ioctl(xf86Info.consoleFd, KDSETMODE, KD_GRAPHICS) < 0)
{
FatalError("xf86OpenConsole: KDSETMODE KD_GRAPHICS failed");
}
break;
#endif /* SYSCONS_SUPPORT || PCVT_SUPPORT */
#ifdef WSCONS_SUPPORT
case WSCONS:
fprintf(stderr, "xf86OpenConsole\n");
/* xf86Info.consoleFd = open("/dev/wskbd0", 0); */
break;
#endif
}
}
else
{
/* serverGeneration != 1 */
#if defined (SYSCONS_SUPPORT) || defined (PCVT_SUPPORT)
if (xf86Info.consType == SYSCONS || xf86Info.consType == PCVT)
{
if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) != 0)
{
xf86Msg(X_WARNING, "xf86OpenConsole: VT_ACTIVATE failed\n");
}
}
#endif /* SYSCONS_SUPPORT || PCVT_SUPPORT */
}
return;
}
#ifdef PCCONS_SUPPORT
static int
xf86OpenPccons()
{
int fd = -1;
if ((fd = open(PCCONS_CONSOLE_DEV1, PCCONS_CONSOLE_MODE, 0))
>= 0 ||
(fd = open(PCCONS_CONSOLE_DEV2, PCCONS_CONSOLE_MODE, 0))
>= 0)
{
if (ioctl(fd, CONSOLE_X_MODE_OFF, 0) < 0)
{
FatalError(
"%s: CONSOLE_X_MODE_OFF failed (%s)\n%s\n%s",
"xf86OpenPccons",
strerror(errno),
"Was expecting pccons driver with X support",
CHECK_DRIVER_MSG);
}
xf86Info.consType = PCCONS;
xf86Msg(X_PROBED, "Using pccons driver with X support\n");
}
return fd;
}
#endif /* PCCONS_SUPPORT */
#ifdef SYSCONS_SUPPORT
static int
xf86OpenSyscons()
{
int fd = -1;
vtmode_t vtmode;
char vtname[12];
struct stat status;
long syscons_version;
MessageType from;
/* Check for syscons */
if ((fd = open(SYSCONS_CONSOLE_DEV1, SYSCONS_CONSOLE_MODE, 0)) >= 0
|| (fd = open(SYSCONS_CONSOLE_DEV2, SYSCONS_CONSOLE_MODE, 0)) >= 0)
{
if (ioctl(fd, VT_GETMODE, &vtmode) >= 0)
{
/* Get syscons version */
if (ioctl(fd, CONS_GETVERS, &syscons_version) < 0)
{
syscons_version = 0;
}
xf86Info.vtno = VTnum;
from = X_CMDLINE;
#ifdef VT_GETACTIVE
if (ioctl(fd, VT_GETACTIVE, &initialVT) < 0)
initialVT = -1;
#endif
if (xf86Info.vtno == -1)
{
/*
* For old syscons versions (<0x100), VT_OPENQRY returns
* the current VT rather than the next free VT. In this
* case, the server gets started on the current VT instead
* of the next free VT.
*/
#if 0
/* check for the fixed VT_OPENQRY */
if (syscons_version >= 0x100)
{
#endif
if (ioctl(fd, VT_OPENQRY, &xf86Info.vtno) < 0)
{
/* No free VTs */
xf86Info.vtno = -1;
}
#if 0
}
#endif
if (xf86Info.vtno == -1)
{
/*
* All VTs are in use. If initialVT was found, use it.
* Otherwise, if stdin is a VT, use that one.
* XXX stdin is already closed, so this won't work.
*/
if (initialVT != -1)
{
xf86Info.vtno = initialVT;
}
else if ((fstat(0, &status) >= 0)
&& S_ISCHR(status.st_mode)
&& (ioctl(0, VT_GETMODE, &vtmode) >= 0))
{
/* stdin is a VT */
xf86Info.vtno = minor(status.st_rdev) + 1;
}
else
{
if (syscons_version >= 0x100)
{
FatalError("%s: Cannot find a free VT",
"xf86OpenSyscons");
}
/* Should no longer reach here */
FatalError("%s: %s %s\n\t%s %s",
"xf86OpenSyscons",
"syscons versions prior to 1.0 require",
"either the",
"server's stdin be a VT",
"or the use of the vtxx server option");
}
}
from = X_PROBED;
}
close(fd);
#ifndef __OpenBSD__
sprintf(vtname, "/dev/ttyv%01x", xf86Info.vtno - 1);
#else
sprintf(vtname, "/dev/ttyC%01x", xf86Info.vtno - 1);
#endif
if ((fd = open(vtname, SYSCONS_CONSOLE_MODE, 0)) < 0)
{
FatalError("xf86OpenSyscons: Cannot open %s (%s)",
vtname, strerror(errno));
}
if (ioctl(fd, VT_GETMODE, &vtmode) < 0)
{
FatalError("xf86OpenSyscons: VT_GETMODE failed");
}
xf86Info.consType = SYSCONS;
xf86Msg(X_PROBED, "Using syscons driver with X support");
if (syscons_version >= 0x100)
{
xf86ErrorF(" (version %ld.%ld)\n", syscons_version >> 8,
syscons_version & 0xFF);
}
else
{
xf86ErrorF(" (version 0.x)\n");
}
xf86Msg(from, "using VT number %d\n\n", xf86Info.vtno);
}
else
{
/* VT_GETMODE failed, probably not syscons */
close(fd);
fd = -1;
}
}
return fd;
}
#endif /* SYSCONS_SUPPORT */
#ifdef PCVT_SUPPORT
static int
xf86OpenPcvt()
{
/* This looks much like syscons, since pcvt is API compatible */
int fd = -1;
vtmode_t vtmode;
char vtname[12], *vtprefix;
struct stat status;
struct pcvtid pcvt_version;
#ifndef __OpenBSD__
vtprefix = "/dev/ttyv";
#else
vtprefix = "/dev/ttyC";
#endif
fd = open(PCVT_CONSOLE_DEV, PCVT_CONSOLE_MODE, 0);
#ifdef WSCONS_PCVT_COMPAT_CONSOLE_DEV
if (fd < 0)
{
fd = open(WSCONS_PCVT_COMPAT_CONSOLE_DEV, PCVT_CONSOLE_MODE, 0);
vtprefix = "/dev/ttyE";
}
#endif
if (fd >= 0)
{
if (ioctl(fd, VGAPCVTID, &pcvt_version) >= 0)
{
if(ioctl(fd, VT_GETMODE, &vtmode) < 0)
{
FatalError("%s: VT_GETMODE failed\n%s%s\n%s",
"xf86OpenPcvt",
"Found pcvt driver but X11 seems to be",
" not supported.", CHECK_DRIVER_MSG);
}
xf86Info.vtno = VTnum;
if (ioctl(fd, VT_GETACTIVE, &initialVT) < 0)
initialVT = -1;
if (xf86Info.vtno == -1)
{
if (ioctl(fd, VT_OPENQRY, &xf86Info.vtno) < 0)
{
/* No free VTs */
xf86Info.vtno = -1;
}
if (xf86Info.vtno == -1)
{
/*
* All VTs are in use. If initialVT was found, use it.
* Otherwise, if stdin is a VT, use that one.
* XXX stdin is already closed, so this won't work.
*/
if (initialVT != -1)
{
xf86Info.vtno = initialVT;
}
else if ((fstat(0, &status) >= 0)
&& S_ISCHR(status.st_mode)
&& (ioctl(0, VT_GETMODE, &vtmode) >= 0))
{
/* stdin is a VT */
xf86Info.vtno = minor(status.st_rdev) + 1;
}
else
{
FatalError("%s: Cannot find a free VT",
"xf86OpenPcvt");
}
}
}
close(fd);
sprintf(vtname, "%s%01x", vtprefix, xf86Info.vtno - 1);
if ((fd = open(vtname, PCVT_CONSOLE_MODE, 0)) < 0)
{
FatalError("xf86OpenPcvt: Cannot open %s (%s)",
vtname, strerror(errno));
}
if (ioctl(fd, VT_GETMODE, &vtmode) < 0)
{
FatalError("xf86OpenPcvt: VT_GETMODE failed");
}
xf86Info.consType = PCVT;
#ifdef WSCONS_SUPPORT
xf86Msg(X_PROBED,
"Using wscons driver in pcvt compatibility mode "
"(version %d.%d)\n",
pcvt_version.rmajor, pcvt_version.rminor);
#else
xf86Msg(X_PROBED, "Using pcvt driver (version %d.%d)\n",
pcvt_version.rmajor, pcvt_version.rminor);
#endif
}
else
{
/* Not pcvt */
close(fd);
fd = -1;
}
}
return fd;
}
#endif /* PCVT_SUPPORT */
#ifdef WSCONS_SUPPORT
static int
xf86OpenWScons()
{
int fd = -1;
int mode = WSDISPLAYIO_MODE_MAPPED;
int i;
char ttyname[16];
/* XXX Is this ok? */
for (i = 0; i < 8; i++) {
#if defined(__NetBSD__)
sprintf(ttyname, "/dev/ttyE%d", i);
#elif defined(__OpenBSD__)
sprintf(ttyname, "/dev/ttyC%d", i);
#endif
if ((fd = open(ttyname, 2)) != -1)
break;
}
if (fd != -1) {
if (ioctl(fd, WSDISPLAYIO_SMODE, &mode) < 0) {
FatalError("%s: WSDISPLAYIO_MODE_MAPPED failed (%s)\n%s",
"xf86OpenConsole", strerror(errno),
CHECK_DRIVER_MSG);
}
xf86Info.consType = WSCONS;
xf86Msg(X_PROBED, "Using wscons driver\n");
}
return fd;
}
#endif /* WSCONS_SUPPORT */
void
xf86CloseConsole()
{
#if defined(SYSCONS_SUPPORT) || defined(PCVT_SUPPORT)
struct vt_mode VT;
#endif
switch (xf86Info.consType)
{
#ifdef PCCONS_SUPPORT
case PCCONS:
ioctl (xf86Info.consoleFd, CONSOLE_X_MODE_OFF, 0);
break;
#endif /* PCCONS_SUPPORT */
#if defined (SYSCONS_SUPPORT) || defined (PCVT_SUPPORT)
case SYSCONS:
case PCVT:
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); /* dflt vt handling */
}
#if !defined(USE_DEV_IO) && !defined(USE_I386_IOPL)
if (ioctl(xf86Info.consoleFd, KDDISABIO, 0) < 0)
{
xf86FatalError("xf86CloseConsole: KDDISABIO failed (%s)",
strerror(errno));
}
#endif
if (initialVT != -1)
ioctl(xf86Info.consoleFd, VT_ACTIVATE, initialVT);
break;
#endif /* SYSCONS_SUPPORT || PCVT_SUPPORT */
#ifdef WSCONS_SUPPORT
case WSCONS:
{
int mode = WSDISPLAYIO_MODE_EMUL;
ioctl(xf86Info.screenFd, WSDISPLAYIO_SMODE, &mode);
break;
}
#endif
}
if (xf86Info.screenFd != xf86Info.consoleFd)
{
close(xf86Info.screenFd);
close(xf86Info.consoleFd);
if ((xf86Info.consoleFd = open("/dev/console",O_RDONLY,0)) <0)
{
xf86FatalError("xf86CloseConsole: Cannot open /dev/console (%s)",
strerror(errno));
}
}
close(xf86Info.consoleFd);
if (devConsoleFd >= 0)
close(devConsoleFd);
return;
}
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 defined (SYSCONS_SUPPORT) || defined (PCVT_SUPPORT)
if ((argv[i][0] == 'v') && (argv[i][1] == 't'))
{
if (sscanf(argv[i], "vt%2d", &VTnum) == 0 ||
VTnum < 1 || VTnum > 12)
{
UseMsg();
VTnum = -1;
return(0);
}
return(1);
}
#endif /* SYSCONS_SUPPORT || PCVT_SUPPORT */
return(0);
}
void
xf86UseMsg()
{
#if defined (SYSCONS_SUPPORT) || defined (PCVT_SUPPORT)
ErrorF("vtXX use the specified VT number (1-12)\n");
#endif /* SYSCONS_SUPPORT || PCVT_SUPPORT */
ErrorF("-keeptty ");
ErrorF("don't detach controlling tty (for debugging only)\n");
return;
}
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