Fix a race on PolkitSubject type registration (#866718)
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From 20ad116a6582e57d20f9d8197758947918753a4c Mon Sep 17 00:00:00 2001
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From: Tomas Bzatek <tbzatek@redhat.com>
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Date: Wed, 29 May 2013 13:45:31 +0000
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Subject: Use GOnce for interface type registration
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Static local variable may not be enough since it doesn't provide locking.
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Related to these udisksd warnings:
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GLib-GObject-WARNING **: cannot register existing type `PolkitSubject'
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Thanks to Hans de Goede for spotting this!
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https://bugs.freedesktop.org/show_bug.cgi?id=65130
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---
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diff --git a/src/polkit/polkitidentity.c b/src/polkit/polkitidentity.c
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index dd15b2f..7813c2c 100644
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--- a/src/polkit/polkitidentity.c
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+++ b/src/polkit/polkitidentity.c
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@@ -49,9 +49,9 @@ base_init (gpointer g_iface)
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GType
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polkit_identity_get_type (void)
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{
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- static GType iface_type = 0;
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+ static volatile gsize g_define_type_id__volatile = 0;
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- if (iface_type == 0)
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+ if (g_once_init_enter (&g_define_type_id__volatile))
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{
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static const GTypeInfo info =
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{
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@@ -67,12 +67,14 @@ polkit_identity_get_type (void)
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NULL /* value_table */
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};
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- iface_type = g_type_register_static (G_TYPE_INTERFACE, "PolkitIdentity", &info, 0);
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+ GType iface_type =
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+ g_type_register_static (G_TYPE_INTERFACE, "PolkitIdentity", &info, 0);
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g_type_interface_add_prerequisite (iface_type, G_TYPE_OBJECT);
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+ g_once_init_leave (&g_define_type_id__volatile, iface_type);
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}
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- return iface_type;
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+ return g_define_type_id__volatile;
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}
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/**
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diff --git a/src/polkit/polkitsubject.c b/src/polkit/polkitsubject.c
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index d2c4c20..aed5795 100644
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--- a/src/polkit/polkitsubject.c
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+++ b/src/polkit/polkitsubject.c
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@@ -50,9 +50,9 @@ base_init (gpointer g_iface)
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GType
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polkit_subject_get_type (void)
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{
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- static GType iface_type = 0;
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+ static volatile gsize g_define_type_id__volatile = 0;
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- if (iface_type == 0)
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+ if (g_once_init_enter (&g_define_type_id__volatile))
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{
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static const GTypeInfo info =
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{
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@@ -68,12 +68,14 @@ polkit_subject_get_type (void)
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NULL /* value_table */
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};
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- iface_type = g_type_register_static (G_TYPE_INTERFACE, "PolkitSubject", &info, 0);
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+ GType iface_type =
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+ g_type_register_static (G_TYPE_INTERFACE, "PolkitSubject", &info, 0);
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g_type_interface_add_prerequisite (iface_type, G_TYPE_OBJECT);
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+ g_once_init_leave (&g_define_type_id__volatile, iface_type);
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}
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- return iface_type;
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+ return g_define_type_id__volatile;
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}
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/**
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diff --git a/src/polkitbackend/polkitbackendactionlookup.c b/src/polkitbackend/polkitbackendactionlookup.c
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index 5a1a228..20747e7 100644
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--- a/src/polkitbackend/polkitbackendactionlookup.c
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+++ b/src/polkitbackend/polkitbackendactionlookup.c
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@@ -74,9 +74,9 @@ base_init (gpointer g_iface)
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GType
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polkit_backend_action_lookup_get_type (void)
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{
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- static GType iface_type = 0;
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+ static volatile gsize g_define_type_id__volatile = 0;
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- if (iface_type == 0)
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+ if (g_once_init_enter (&g_define_type_id__volatile))
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{
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static const GTypeInfo info =
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{
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@@ -92,12 +92,14 @@ polkit_backend_action_lookup_get_type (void)
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NULL /* value_table */
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};
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- iface_type = g_type_register_static (G_TYPE_INTERFACE, "PolkitBackendActionLookup", &info, 0);
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+ GType iface_type =
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+ g_type_register_static (G_TYPE_INTERFACE, "PolkitBackendActionLookup", &info, 0);
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g_type_interface_add_prerequisite (iface_type, G_TYPE_OBJECT);
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+ g_once_init_leave (&g_define_type_id__volatile, iface_type);
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}
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- return iface_type;
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+ return g_define_type_id__volatile;
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}
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/**
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--
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cgit v0.9.0.2-2-gbebe
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10
polkit.spec
10
polkit.spec
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Summary: polkit Authorization Framework
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Name: polkit
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Version: 0.107
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Release: 4%{?dist}
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Release: 5%{?dist}
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License: LGPLv2+
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URL: http://www.freedesktop.org/wiki/Software/polkit
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Source0: http://www.freedesktop.org/software/polkit/releases/%{name}-%{version}.tar.gz
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@ -32,6 +32,10 @@ Provides: polkit-desktop-policy = 0.103
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Patch0: polkit-0.107-fall-back-to-uid0-if-no-admin-users-are-available.patch
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Patch1: polkit-0.107-avoid-crashing-if-initializing-the-server-object-fails.patch
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# https://bugzilla.redhat.com/show_bug.cgi?id=866718
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# Use GOnce for interface type registration
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Patch2: polkit-0.112-gobject-interface-type-registration-race.patch
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%description
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polkit is a toolkit for defining and handling authorizations. It is
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used for allowing unprivileged processes to speak to privileged
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@ -64,6 +68,7 @@ Development documentation for polkit.
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%setup -q
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%patch0 -p1 -b .fall-back-to-uid-0
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%patch1 -p1 -b .crash-fix
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%patch2 -p1 -b .gtype-race
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%build
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%configure --enable-gtk-doc \
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@ -132,6 +137,9 @@ exit 0
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%{_datadir}/gtk-doc
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%changelog
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* Wed May 29 2013 Tomas Bzatek <tbzatek@redhat.com> 0.107-5
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- Fix a race on PolkitSubject type registration (#866718)
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* Wed Oct 10 2012 Adam Jackson <ajax@redhat.com> 0.107-4
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- Don't crash if initializing the server object fails
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