diff options
Diffstat (limited to 'xorg-server/os/osinit.c')
| -rw-r--r-- | xorg-server/os/osinit.c | 616 |
1 files changed, 308 insertions, 308 deletions
diff --git a/xorg-server/os/osinit.c b/xorg-server/os/osinit.c index 69e4933e6..acea682ce 100644 --- a/xorg-server/os/osinit.c +++ b/xorg-server/os/osinit.c @@ -1,308 +1,308 @@ -/***********************************************************
-
-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 "misc.h"
-
-#include "dixstruct.h"
-
-
-#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();
- }
-}
+/*********************************************************** + +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 "misc.h" + +#include "dixstruct.h" + + +#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) + snprintf (fname, sizeof(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(); + } +} |