!79 当XDG_DATA_DIRS设置大于128个目录时，避免dbus-daemon crash

From: @hongjinghao 
Reviewed-by: @licunlong 
Signed-off-by: @licunlong

backport-Do-not-crash-when-reloading-configuration.patch

@@ -0,0 +1,66 @@
+From c3b1e4daa5b0ed5729f0f12bc6a3ba50a391f7f6 Mon Sep 17 00:00:00 2001
+From: hongjinghao <hongjinghao@huawei.com>
+Date: Thu, 4 Jan 2024 15:15:53 +0800
+Subject: [PATCH] Do not crash when reloading configuration with > 128 dirs
+
+When `dbus-daemon` sets more than 128 directories for `XDG_DATA_DIRS`,
+none of the elements in `new_dirs` will be `NULL`, which resulted in
+these loops reading out-of-bounds (undefined behaviour). In practice
+this led to a crash.
+
+To avoid this, make sure to stop iteration at the end of the array.
+
+[smcv: Expanded commit message]
+Resolves: dbus/dbus#481
+---
+ bus/dir-watch-inotify.c | 4 ++--
+ bus/dir-watch-kqueue.c  | 4 ++--
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/bus/dir-watch-inotify.c b/bus/dir-watch-inotify.c
+index 77b2d5a92..4f269777f 100644
+--- a/bus/dir-watch-inotify.c
++++ b/bus/dir-watch-inotify.c
+@@ -131,7 +131,7 @@ _set_watched_dirs_internal (BusContext *context,
+   /* Look for directories in both the old and new sets, if
+    * we find one, move its data into the new set.
+    */
+-  for (i = 0; new_dirs[i]; i++)
++  for (i = 0; i < MAX_DIRS_TO_WATCH && new_dirs[i]; i++)
+     {
+       for (j = 0; j < num_wds; j++)
+         {
+@@ -160,7 +160,7 @@ _set_watched_dirs_internal (BusContext *context,
+         }
+     }
+ 
+-  for (i = 0; new_dirs[i]; i++)
++  for (i = 0; i < MAX_DIRS_TO_WATCH && new_dirs[i]; i++)
+     {
+       if (new_wds[i] == -1)
+         {
+diff --git a/bus/dir-watch-kqueue.c b/bus/dir-watch-kqueue.c
+index b419606e3..07b505c99 100644
+--- a/bus/dir-watch-kqueue.c
++++ b/bus/dir-watch-kqueue.c
+@@ -235,7 +235,7 @@ bus_set_watched_dirs (BusContext *context, DBusList **directories)
+   /* Look for directories in both the old and new sets, if
+    * we find one, move its data into the new set.
+    */
+-  for (i = 0; new_dirs[i]; i++)
++  for (i = 0; i < MAX_DIRS_TO_WATCH && new_dirs[i]; i++)
+     {
+       for (j = 0; j < num_fds; j++)
+         {
+@@ -264,7 +264,7 @@ bus_set_watched_dirs (BusContext *context, DBusList **directories)
+         }
+     }
+ 
+-  for (i = 0; new_dirs[i]; i++)
++  for (i = 0; i < MAX_DIRS_TO_WATCH && new_dirs[i]; i++)
+     {
+       if (new_fds[i] == -1)
+         {
+-- 
+GitLab
+

dbus.spec

@@ -1,7 +1,7 @@
 Name:     dbus
 Epoch:    1
 Version:  1.14.8
-Release:  1
+Release:  2
 Summary:  System Message Bus
 License:  AFLv3.0 or GPLv2+
 URL:      http://www.freedesktop.org/Software/dbus/
@@ -12,6 +12,7 @@ Patch0001:  bugfix-let-systemd-restart-dbus-when-the-it-enters-failed.patch
 Patch0002:  print-load-average-when-activate-service-timeout.patch
 
 Patch6001:  backport-tools-Use-Python3-for-GetAllMatchRules.patch
+Patch6002:  backport-Do-not-crash-when-reloading-configuration.patch
 
 BuildRequires:  systemd-devel expat-devel libselinux-devel audit-libs-devel doxygen xmlto cmake
 BuildRequires:  autoconf-archive libtool libX11-devel libcap-ng-devel libxslt
@@ -224,6 +225,9 @@ fi
 %exclude %{_pkgdocdir}/README
 
 %changelog
+* Wed Feb 21 2024 hongjinghao <hongjinghao@huawei.com> - 1:1.14.8-2
+- add backport-Do-not-crash-when-reloading-configuration.patch
+
 * Fri Jul 14 2023 hongjinghao <hongjinghao@huawei.com> - 1:1.14.8-1
 - Update to 1.14.8