initial state (xorg-server 1.10.2)

1 files changed, 315 insertions, 0 deletions

diff --git a/os/osinit.c b/os/osinit.c
new file mode 100644
index 0000000..018e404
--- /dev/null
+++ b/os/osinit.c
@@ -0,0 +1,315 @@
+/***********************************************************
+
+Copyright 1987, 1998  The Open Group
+
+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.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+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 name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdio.h>
+#include <X11/X.h>
+#include "os.h"
+#include "osdep.h"
+#include <X11/Xos.h>
+#include <signal.h>
+#include <errno.h>
+#ifdef HAVE_DLFCN_H
+# include <dlfcn.h>
+#endif
+#ifdef HAVE_BACKTRACE
+#include <execinfo.h>
+#endif
+
+
+#include "dixstruct.h"
+
+#ifndef PATH_MAX
+#ifdef MAXPATHLEN
+#define PATH_MAX MAXPATHLEN
+#else
+#define PATH_MAX 1024
+#endif
+#endif
+
+
+#if !defined(SYSV) && !defined(WIN32) 
+#include <sys/resource.h>
+#endif
+
+#ifndef ADMPATH
+#define ADMPATH "/usr/adm/X%smsgs"
+#endif
+
+extern char *display;
+#ifdef RLIMIT_DATA
+int limitDataSpace = -1;
+#endif
+#ifdef RLIMIT_STACK
+int limitStackSpace = -1;
+#endif
+#ifdef RLIMIT_NOFILE
+int limitNoFile = -1;
+#endif
+
+static OsSigWrapperPtr OsSigWrapper = NULL;
+
+OsSigWrapperPtr
+OsRegisterSigWrapper(OsSigWrapperPtr newSigWrapper)
+{
+    OsSigWrapperPtr oldSigWrapper = OsSigWrapper;
+
+    OsSigWrapper = newSigWrapper;
+
+    return oldSigWrapper;
+}
+
+/*
+ * OsSigHandler --
+ *    Catch unexpected signals and exit or continue cleanly.
+ */
+static void
+#ifdef SA_SIGINFO
+OsSigHandler(int signo, siginfo_t *sip, void *unused)
+#else
+OsSigHandler(int signo)
+#endif
+{
+#ifdef RTLD_DI_SETSIGNAL
+  const char *dlerr = dlerror();
+
+  if (dlerr) {
+      LogMessage(X_ERROR, "Dynamic loader error: %s\n", dlerr);
+  }
+#endif /* RTLD_DI_SETSIGNAL */
+
+  if (OsSigWrapper != NULL) {
+      if (OsSigWrapper(signo) == 0) {
+	  /* ddx handled signal and wants us to continue */
+	  return;
+      }
+  }
+
+  /* log, cleanup, and abort */
+  xorg_backtrace();
+
+#ifdef SA_SIGINFO
+  if (sip->si_code == SI_USER) {
+      ErrorF("Recieved signal %d sent by process %ld, uid %ld\n",
+	     signo, (long) sip->si_pid, (long) sip->si_uid);
+  } else {
+      switch (signo) {
+          case SIGSEGV:
+          case SIGBUS:
+          case SIGILL:
+          case SIGFPE:
+	      ErrorF("%s at address %p\n", strsignal(signo), sip->si_addr);
+      }
+  }
+#endif
+
+  FatalError("Caught signal %d (%s). Server aborting\n",
+	     signo, strsignal(signo));
+}
+
+void
+OsInit(void)
+{
+    static Bool been_here = FALSE;
+    static char* devnull = "/dev/null";
+    char fname[PATH_MAX];
+
+    if (!been_here) {
+	struct sigaction act, oact;
+	int i;
+	int siglist[] = { SIGSEGV, SIGQUIT, SIGILL, SIGFPE, SIGBUS,
+			  SIGSYS,
+			  SIGXCPU,
+			  SIGXFSZ,
+#ifdef SIGEMT
+			  SIGEMT,
+#endif
+			  0 /* must be last */ };
+	sigemptyset(&act.sa_mask);
+#ifdef SA_SIGINFO
+	act.sa_sigaction = OsSigHandler;
+	act.sa_flags = SA_SIGINFO;
+#else
+        act.sa_handler = OsSigHandler;
+        act.sa_flags = 0;
+#endif
+	for (i = 0; siglist[i] != 0; i++) {
+	    if (sigaction(siglist[i], &act, &oact)) {
+		ErrorF("failed to install signal handler for signal %d: %s\n",
+		       siglist[i], strerror(errno));
+	    }
+	}
+#ifdef HAVE_BACKTRACE
+	/*
+	 * initialize the backtracer, since the ctor calls dlopen(), which
+	 * calls malloc(), which isn't signal-safe.
+	 */
+	do {
+	    void *array;
+	    backtrace(&array, 1);
+	} while (0);
+#endif
+
+#ifdef RTLD_DI_SETSIGNAL
+	/* Tell runtime linker to send a signal we can catch instead of SIGKILL
+	 * for failures to load libraries/modules at runtime so we can clean up
+	 * after ourselves.
+	 */
+	int failure_signal = SIGQUIT;
+	dlinfo(RTLD_SELF, RTLD_DI_SETSIGNAL, &failure_signal);
+#endif
+
+#if !defined(__CYGWIN__) 
+	fclose(stdin);
+	fclose(stdout);
+#endif
+	/* 
+	 * If a write of zero bytes to stderr returns non-zero, i.e. -1, 
+	 * then writing to stderr failed, and we'll write somewhere else 
+	 * instead. (Apparently this never happens in the Real World.)
+	 */
+	if (write (2, fname, 0) == -1) 
+	{
+	    FILE *err;
+
+	    if (strlen (display) + strlen (ADMPATH) + 1 < sizeof fname)
+		sprintf (fname, ADMPATH, display);
+	    else
+		strcpy (fname, devnull);
+	    /*
+	     * uses stdio to avoid os dependencies here,
+	     * a real os would use
+ 	     *  open (fname, O_WRONLY|O_APPEND|O_CREAT, 0666)
+	     */
+	    if (!(err = fopen (fname, "a+")))
+		err = fopen (devnull, "w");
+	    if (err && (fileno(err) != 2)) {
+		dup2 (fileno (err), 2);
+		fclose (err);
+	    }
+#if defined(SYSV) || defined(SVR4) || defined(WIN32) || defined(__CYGWIN__)
+	    {
+	    static char buf[BUFSIZ];
+	    setvbuf (stderr, buf, _IOLBF, BUFSIZ);
+	    }
+#else
+	    setlinebuf(stderr);
+#endif
+	}
+
+	if (getpgrp () == 0)
+	    setpgid (0, 0);
+
+#ifdef RLIMIT_DATA
+	if (limitDataSpace >= 0)
+	{
+	    struct rlimit	rlim;
+
+	    if (!getrlimit(RLIMIT_DATA, &rlim))
+	    {
+		if ((limitDataSpace > 0) && (limitDataSpace < rlim.rlim_max))
+		    rlim.rlim_cur = limitDataSpace;
+		else
+		    rlim.rlim_cur = rlim.rlim_max;
+		(void)setrlimit(RLIMIT_DATA, &rlim);
+	    }
+	}
+#endif
+#ifdef RLIMIT_STACK
+	if (limitStackSpace >= 0)
+	{
+	    struct rlimit	rlim;
+
+	    if (!getrlimit(RLIMIT_STACK, &rlim))
+	    {
+		if ((limitStackSpace > 0) && (limitStackSpace < rlim.rlim_max))
+		    rlim.rlim_cur = limitStackSpace;
+		else
+		    rlim.rlim_cur = rlim.rlim_max;
+		(void)setrlimit(RLIMIT_STACK, &rlim);
+	    }
+	}
+#endif
+#ifdef RLIMIT_NOFILE
+	if (limitNoFile >= 0)
+	{
+	    struct rlimit	rlim;
+
+	    if (!getrlimit(RLIMIT_NOFILE, &rlim))
+	    {
+		if ((limitNoFile > 0) && (limitNoFile < rlim.rlim_max))
+		    rlim.rlim_cur = limitNoFile;
+		else
+		    rlim.rlim_cur = rlim.rlim_max;
+		(void)setrlimit(RLIMIT_NOFILE, &rlim);
+	    }
+	}
+#endif
+	LockServer();
+	been_here = TRUE;
+    }
+    TimerInit();
+    OsVendorInit();
+    /*
+     * No log file by default.  OsVendorInit() should call LogInit() with the
+     * log file name if logging to a file is desired.
+     */
+    LogInit(NULL, NULL);
+    SmartScheduleInit ();
+}
+
+void
+OsCleanup(Bool terminating)
+{
+    if (terminating)
+    {
+	UnlockServer();
+    }
+}