665b3fbeef
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/xorg-x11-server?expand=0&rev=bb0cc16d2f571f87db43a12ff2a2cf70
124 lines
2.9 KiB
Diff
124 lines
2.9 KiB
Diff
From bb4e768eaf8025d3ccf369cbad9a9b8be721e7ac Mon Sep 17 00:00:00 2001
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From: Matthias Hopf <mhopf@suse.de>
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Date: Wed, 25 Aug 2010 14:12:48 +0200
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Subject: [PATCH] Use external tool for creating backtraces on crashes if available.
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This calls /usr/bin/xorg-backtrace to create reasonable commented backtraces
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with gdb. On errors it falls back to the generic method.
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Signed-off-by: Matthias Hopf <mhopf@suse.de>
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---
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os/backtrace.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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1 files changed, 82 insertions(+), 0 deletions(-)
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diff --git a/os/backtrace.c b/os/backtrace.c
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index 7ca6dab..1e3201a 100644
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--- a/os/backtrace.c
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+++ b/os/backtrace.c
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@@ -28,6 +28,81 @@
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#include "os.h"
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#include "misc.h"
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+#include <sys/types.h>
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+#include <sys/wait.h>
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+#include <stdio.h>
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+#include <stdlib.h>
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+#include <unistd.h>
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+#include <errno.h>
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+
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+#define XORG_BACKTRACE "/usr/bin/xorg-backtrace"
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+
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+/* Call gdb to create reasonable(!) backtrace. Returns 0 if successfull. */
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+static int xorg_backtrace_gdb(void)
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+{
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+ static const char *xorg_backtrace = XORG_BACKTRACE;
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+ char pidstr[12];
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+ char fdname[] = "/tmp/xorg.XXXXXX";
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+ char buf[256];
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+ pid_t pid;
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+ int fd, status = -1, ret;
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+ FILE *f;
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+
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+ if (access (xorg_backtrace, R_OK | X_OK) != 0) {
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+ ErrorF ("%s not found, using internal backtrace system\n", xorg_backtrace);
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+ return 1;
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+ }
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+ if ( (fd = mkstemp (fdname)) == -1) {
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+ ErrorF ("xorg_backtrace_gdb internal error 1\n");
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+ return 1;
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+ }
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+ unlink (fdname);
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+ snprintf (pidstr, 12, "%d", getpid());
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+
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+ switch ( (pid = fork()) ) {
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+ case 0:
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+ close (0);
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+ close (1);
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+ close (2);
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+ dup2 (fd, 1);
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+ dup2 (fd, 2);
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+ close (fd);
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+ execl (xorg_backtrace, xorg_backtrace, pidstr, NULL);
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+ exit (-1);
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+ case -1:
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+ close (fd);
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+ return 1;
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+ }
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+
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+ while (waitpid (pid, &status, 0) == -1 && errno == EINTR)
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+ ;
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+ if (WIFEXITED (status) && WEXITSTATUS (status) == 0)
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+ ret = 0;
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+ else {
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+ ErrorF ("%s failed with returncode %d\n", xorg_backtrace, WEXITSTATUS (status));
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+ ret = 1;
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+ }
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+
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+ lseek (fd, 0, SEEK_SET);
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+ if (! (f = fdopen (fd, "r"))) {
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+ ErrorF ("xorg_backtrace_gdb internal error 2\n");
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+ close (fd);
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+ return 1;
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+ }
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+ status = 0;
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+ while (fgets (buf, 256, f)) {
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+ status++;
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+ ErrorF("%s", buf);
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+ }
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+ fclose (f);
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+ if (status < 10 && ret == 0) {
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+ ErrorF ("%s only produced %d lines of output\n", xorg_backtrace, status);
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+ return 1;
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+ }
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+
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+ return ret;
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+}
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+
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#ifdef HAVE_BACKTRACE
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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@@ -41,6 +116,10 @@ void xorg_backtrace(void)
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const char *mod;
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int size, i;
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Dl_info info;
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+
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+ if (xorg_backtrace_gdb () == 0)
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+ return;
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+
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ErrorF("\nBacktrace:\n");
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size = backtrace(array, 64);
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for (i = 0; i < size; i++) {
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@@ -182,6 +261,9 @@ static int xorg_backtrace_pstack(void) {
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void xorg_backtrace(void) {
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+ if (xorg_backtrace_gdb () == 0)
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+ return;
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+
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ErrorF("\nBacktrace:\n");
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# ifdef HAVE_PSTACK
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--
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1.6.0.2
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