This backports three commits that are identified in upstream issue #3924 as the fixes for RHBZ #1676946 (failure of sssd to start in current Rawhide).
460 lines
20 KiB
Diff
460 lines
20 KiB
Diff
From 194438830cdd729e317c1e1baf93da7201dfd39b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Pavel=20B=C5=99ezina?= <pbrezina@redhat.com>
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Date: Mon, 4 Feb 2019 12:00:01 +0100
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Subject: [PATCH 1/3] sbus: avoid using invalid stack point in SBUS_INTERFACE
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SBUS_INTERFACE macros expanded as:
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struct sbus_interface bus =
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({ sbus_interface(
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"org.freedesktop.DBus",
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((void *)0),
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(((const struct sbus_method[])
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{
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({
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/* ... compile time check of function signature omitted */ ;
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sbus_method_sync(/* ... full list of params omitted */);
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}),
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...
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This however includes an issue that methods/properties/signals are returned
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by value, however stored in sbus_interface as pointers. Once we return out
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of the top-level block and assign resulting sbus_interface into 'bus' variable
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those objects allocated on stack becomes invalid and can be overwritten by other
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allocations on stack.
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This patch overcomes this issue by changing declaration of SBUS_INTERFACE and
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avoiding using this top-level block. This still keeps the declarative structure
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and simplifies the code as it does not require any memory handling and
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tests for successful allocations.
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const struct sbus_method __ ## varname ## _m[] = methods; \
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const struct sbus_signal __ ## varname ## _s[] = signals; \
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const struct sbus_property __ ## varname ## _p[] = properties; \
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struct sbus_interface varname = SBUS_IFACE_ ## iface( \
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(__ ## varname ## _m), \
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(__ ## varname ## _s), \
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(__ ## varname ## _p) \
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)
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Resolves:
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https://pagure.io/SSSD/sssd/issue/3924
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Reviewed-by: Alexey Tikhonov <atikhono@redhat.com>
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---
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src/monitor/monitor.c | 2 +-
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src/providers/data_provider/dp.c | 10 +++++-----
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src/providers/data_provider_be.c | 2 +-
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src/providers/proxy/proxy_child.c | 2 +-
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src/providers/proxy/proxy_client.c | 2 +-
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src/responder/autofs/autofssrv.c | 2 +-
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src/responder/common/responder_iface.c | 6 +++---
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src/responder/ifp/ifp_iface/ifp_iface.c | 24 ++++++++++++------------
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src/responder/ifp/ifpsrv.c | 2 +-
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src/responder/nss/nss_iface.c | 2 +-
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src/responder/nss/nsssrv.c | 2 +-
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src/sbus/interface/sbus_introspection.c | 2 +-
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src/sbus/interface/sbus_properties.c | 2 +-
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src/sbus/sbus_interface.h | 22 +++++++++++++++++-----
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src/sbus/server/sbus_server_interface.c | 2 +-
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15 files changed, 48 insertions(+), 36 deletions(-)
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diff --git a/src/monitor/monitor.c b/src/monitor/monitor.c
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index 136cf8f27..8d12f8133 100644
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--- a/src/monitor/monitor.c
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+++ b/src/monitor/monitor.c
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@@ -2018,7 +2018,7 @@ static void monitor_sbus_connected(struct tevent_req *req)
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goto done;
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}
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- struct sbus_interface iface = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface,
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sssd_monitor,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_monitor, RegisterService, monitor_sbus_RegisterService, ctx)
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diff --git a/src/providers/data_provider/dp.c b/src/providers/data_provider/dp.c
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index bd003c8b3..e79d6f294 100644
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--- a/src/providers/data_provider/dp.c
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+++ b/src/providers/data_provider/dp.c
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@@ -33,7 +33,7 @@ dp_init_interface(struct data_provider *provider)
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{
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errno_t ret;
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- struct sbus_interface iface_dp_client = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_dp_client,
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sssd_DataProvider_Client,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_DataProvider_Client, Register, dp_client_register, provider)
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@@ -42,7 +42,7 @@ dp_init_interface(struct data_provider *provider)
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_dp_backend = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_dp_backend,
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sssd_DataProvider_Backend,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_DataProvider_Backend, IsOnline, dp_backend_is_online, provider->be_ctx)
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@@ -51,7 +51,7 @@ dp_init_interface(struct data_provider *provider)
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_dp_failover = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_dp_failover,
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sssd_DataProvider_Failover,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_DataProvider_Failover, ListServices, dp_failover_list_services, provider->be_ctx),
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@@ -62,7 +62,7 @@ dp_init_interface(struct data_provider *provider)
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_dp_access = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_dp_access,
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sssd_DataProvider_AccessControl,
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SBUS_METHODS(
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SBUS_ASYNC(METHOD, sssd_DataProvider_AccessControl, RefreshRules, dp_access_control_refresh_rules_send, dp_access_control_refresh_rules_recv, provider)
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@@ -71,7 +71,7 @@ dp_init_interface(struct data_provider *provider)
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_dp = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_dp,
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sssd_dataprovider,
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SBUS_METHODS(
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SBUS_ASYNC(METHOD, sssd_dataprovider, pamHandler, dp_pam_handler_send, dp_pam_handler_recv, provider),
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diff --git a/src/providers/data_provider_be.c b/src/providers/data_provider_be.c
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index 7043e7a5f..942952b24 100644
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--- a/src/providers/data_provider_be.c
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+++ b/src/providers/data_provider_be.c
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@@ -382,7 +382,7 @@ static void signal_be_reset_offline(struct tevent_context *ev,
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static errno_t
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be_register_monitor_iface(struct sbus_connection *conn, struct be_ctx *be_ctx)
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{
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- struct sbus_interface iface_service = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_service,
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sssd_service,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_service, resInit, data_provider_res_init, be_ctx),
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diff --git a/src/providers/proxy/proxy_child.c b/src/providers/proxy/proxy_child.c
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index 134f96f82..4f06d42aa 100644
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--- a/src/providers/proxy/proxy_child.c
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+++ b/src/providers/proxy/proxy_child.c
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@@ -348,7 +348,7 @@ proxy_cli_init(struct pc_ctx *ctx)
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return ENOMEM;
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}
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- struct sbus_interface iface = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface,
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sssd_ProxyChild_Auth,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_ProxyChild_Auth, PAM, pc_pam_handler, ctx)
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diff --git a/src/providers/proxy/proxy_client.c b/src/providers/proxy/proxy_client.c
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index 1c325eee5..09ebf3bda 100644
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--- a/src/providers/proxy/proxy_client.c
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+++ b/src/providers/proxy/proxy_client.c
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@@ -100,7 +100,7 @@ proxy_client_init(struct sbus_connection *conn,
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{
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errno_t ret;
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- struct sbus_interface iface = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface,
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sssd_ProxyChild_Client,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_ProxyChild_Client, Register, proxy_client_register, auth_ctx)
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diff --git a/src/responder/autofs/autofssrv.c b/src/responder/autofs/autofssrv.c
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index 614e901e7..230bd2aac 100644
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--- a/src/responder/autofs/autofssrv.c
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+++ b/src/responder/autofs/autofssrv.c
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@@ -62,7 +62,7 @@ autofs_register_service_iface(struct autofs_ctx *autofs_ctx,
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{
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errno_t ret;
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- struct sbus_interface iface_svc = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_svc,
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sssd_service,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_service, resInit, monitor_common_res_init, NULL),
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diff --git a/src/responder/common/responder_iface.c b/src/responder/common/responder_iface.c
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index 79b632c05..911cd6cc0 100644
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--- a/src/responder/common/responder_iface.c
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+++ b/src/responder/common/responder_iface.c
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@@ -99,7 +99,7 @@ sss_resp_register_sbus_iface(struct sbus_connection *conn,
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{
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errno_t ret;
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- struct sbus_interface iface_resp_domain = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_resp_domain,
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sssd_Responder_Domain,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_Responder_Domain, SetActive, sss_resp_domain_active, rctx),
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@@ -109,7 +109,7 @@ sss_resp_register_sbus_iface(struct sbus_connection *conn,
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_resp_negcache = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_resp_negcache,
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sssd_Responder_NegativeCache,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_Responder_NegativeCache, ResetUsers, sss_resp_reset_ncache_users, rctx),
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@@ -139,7 +139,7 @@ sss_resp_register_service_iface(struct resp_ctx *rctx)
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{
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errno_t ret;
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- struct sbus_interface iface_svc = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_svc,
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sssd_service,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_service, resInit, monitor_common_res_init, NULL),
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diff --git a/src/responder/ifp/ifp_iface/ifp_iface.c b/src/responder/ifp/ifp_iface/ifp_iface.c
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index fa9f9ba53..a3385091b 100644
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--- a/src/responder/ifp/ifp_iface/ifp_iface.c
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+++ b/src/responder/ifp/ifp_iface/ifp_iface.c
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@@ -77,7 +77,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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{
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errno_t ret;
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- struct sbus_interface iface_ifp = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp,
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org_freedesktop_sssd_infopipe,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, org_freedesktop_sssd_infopipe, Ping, ifp_ping, ctx),
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@@ -96,7 +96,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_ifp_components = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_components,
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org_freedesktop_sssd_infopipe_Components,
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SBUS_METHODS(SBUS_NO_METHODS),
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SBUS_SIGNALS(SBUS_NO_SIGNALS),
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@@ -109,7 +109,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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)
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);
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- struct sbus_interface iface_ifp_domains = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_domains,
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org_freedesktop_sssd_infopipe_Domains,
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SBUS_METHODS(SBUS_NO_METHODS),
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SBUS_SIGNALS(SBUS_NO_SIGNALS),
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@@ -131,7 +131,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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)
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);
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- struct sbus_interface iface_ifp_domains_domain = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_domains_domain,
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org_freedesktop_sssd_infopipe_Domains_Domain,
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SBUS_METHODS(
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SBUS_ASYNC(METHOD, org_freedesktop_sssd_infopipe_Domains_Domain, IsOnline, ifp_domains_domain_is_online_send, ifp_domains_domain_is_online_recv, ctx),
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@@ -144,7 +144,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_ifp_users = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_users,
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org_freedesktop_sssd_infopipe_Users,
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SBUS_METHODS(
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SBUS_ASYNC(METHOD, org_freedesktop_sssd_infopipe_Users, FindByName, ifp_users_find_by_name_send, ifp_users_find_by_name_recv, ctx),
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@@ -159,7 +159,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_ifp_users_user = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_users_user,
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org_freedesktop_sssd_infopipe_Users_User,
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SBUS_METHODS(SBUS_NO_METHODS),
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SBUS_SIGNALS(SBUS_NO_SIGNALS),
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@@ -178,7 +178,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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)
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);
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- struct sbus_interface iface_ifp_cache_user = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_cache_user,
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org_freedesktop_sssd_infopipe_Cache,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, org_freedesktop_sssd_infopipe_Cache, List, ifp_cache_list_user, ctx),
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@@ -188,7 +188,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_ifp_cache_object_user = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_cache_object_user,
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org_freedesktop_sssd_infopipe_Cache_Object,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, org_freedesktop_sssd_infopipe_Cache_Object, Store, ifp_cache_object_store_user, ctx),
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@@ -198,7 +198,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_ifp_groups = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_groups,
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org_freedesktop_sssd_infopipe_Groups,
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SBUS_METHODS(
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SBUS_ASYNC(METHOD, org_freedesktop_sssd_infopipe_Groups, FindByName, ifp_groups_find_by_name_send, ifp_groups_find_by_name_recv, ctx),
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@@ -210,7 +210,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_ifp_groups_group = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_groups_group,
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org_freedesktop_sssd_infopipe_Groups_Group,
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SBUS_METHODS(
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SBUS_ASYNC(METHOD, org_freedesktop_sssd_infopipe_Groups_Group, UpdateMemberList, ifp_groups_group_update_member_list_send, ifp_groups_group_update_member_list_recv, ctx)
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@@ -225,7 +225,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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)
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);
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- struct sbus_interface iface_ifp_cache_group = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_cache_group,
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org_freedesktop_sssd_infopipe_Cache,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, org_freedesktop_sssd_infopipe_Cache, List, ifp_cache_list_group, ctx),
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@@ -235,7 +235,7 @@ ifp_register_sbus_interface(struct sbus_connection *conn,
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SBUS_PROPERTIES(SBUS_NO_PROPERTIES)
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);
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- struct sbus_interface iface_ifp_cache_object_group = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_ifp_cache_object_group,
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org_freedesktop_sssd_infopipe_Cache_Object,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, org_freedesktop_sssd_infopipe_Cache_Object, Store, ifp_cache_object_store_group, ctx),
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diff --git a/src/responder/ifp/ifpsrv.c b/src/responder/ifp/ifpsrv.c
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index 61072aad1..0c53534e4 100644
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--- a/src/responder/ifp/ifpsrv.c
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+++ b/src/responder/ifp/ifpsrv.c
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@@ -135,7 +135,7 @@ ifp_register_service_iface(struct ifp_ctx *ifp_ctx,
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{
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errno_t ret;
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- struct sbus_interface iface_svc = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_svc,
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sssd_service,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_service, resInit, monitor_common_res_init, NULL),
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diff --git a/src/responder/nss/nss_iface.c b/src/responder/nss/nss_iface.c
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index f39c3d370..a47b35fca 100644
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--- a/src/responder/nss/nss_iface.c
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+++ b/src/responder/nss/nss_iface.c
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@@ -219,7 +219,7 @@ nss_register_backend_iface(struct sbus_connection *conn,
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{
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errno_t ret;
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- struct sbus_interface iface = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface,
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sssd_nss_MemoryCache,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_nss_MemoryCache, UpdateInitgroups, nss_memorycache_update_initgroups, nss_ctx),
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diff --git a/src/responder/nss/nsssrv.c b/src/responder/nss/nsssrv.c
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index daaf3c06c..9cc9c5d35 100644
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--- a/src/responder/nss/nsssrv.c
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+++ b/src/responder/nss/nsssrv.c
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@@ -276,7 +276,7 @@ nss_register_service_iface(struct nss_ctx *nss_ctx,
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{
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errno_t ret;
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- struct sbus_interface iface_svc = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface_svc,
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sssd_service,
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SBUS_METHODS(
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SBUS_SYNC(METHOD, sssd_service, resInit, monitor_common_res_init, NULL),
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diff --git a/src/sbus/interface/sbus_introspection.c b/src/sbus/interface/sbus_introspection.c
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index b2de9a9ac..863383719 100644
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--- a/src/sbus/interface/sbus_introspection.c
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+++ b/src/sbus/interface/sbus_introspection.c
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@@ -658,7 +658,7 @@ errno_t
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sbus_register_introspection(struct sbus_router *router)
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{
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- struct sbus_interface iface = SBUS_INTERFACE(
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+ SBUS_INTERFACE(iface,
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org_freedesktop_DBus_Introspectable,
|
|
SBUS_METHODS(
|
|
SBUS_ASYNC(METHOD, org_freedesktop_DBus_Introspectable, Introspect,
|
|
diff --git a/src/sbus/interface/sbus_properties.c b/src/sbus/interface/sbus_properties.c
|
|
index 9df4c6bd6..8be933caa 100644
|
|
--- a/src/sbus/interface/sbus_properties.c
|
|
+++ b/src/sbus/interface/sbus_properties.c
|
|
@@ -867,7 +867,7 @@ errno_t
|
|
sbus_register_properties(struct sbus_router *router)
|
|
{
|
|
|
|
- struct sbus_interface iface = SBUS_INTERFACE(
|
|
+ SBUS_INTERFACE(iface,
|
|
org_freedesktop_DBus_Properties,
|
|
SBUS_METHODS(
|
|
SBUS_ASYNC(METHOD, org_freedesktop_DBus_Properties, Get,
|
|
diff --git a/src/sbus/sbus_interface.h b/src/sbus/sbus_interface.h
|
|
index eb1462dd2..45ab4b5ad 100644
|
|
--- a/src/sbus/sbus_interface.h
|
|
+++ b/src/sbus/sbus_interface.h
|
|
@@ -80,7 +80,7 @@ struct sbus_node;
|
|
* };
|
|
*/
|
|
#define SBUS_METHODS(...) \
|
|
- (const struct sbus_method[]) { \
|
|
+ { \
|
|
__VA_ARGS__, \
|
|
SBUS_INTERFACE_SENTINEL \
|
|
}
|
|
@@ -117,7 +117,7 @@ struct sbus_node;
|
|
* };
|
|
*/
|
|
#define SBUS_SIGNALS(...) \
|
|
- (const struct sbus_signal[]) { \
|
|
+ { \
|
|
__VA_ARGS__, \
|
|
SBUS_INTERFACE_SENTINEL \
|
|
}
|
|
@@ -159,7 +159,7 @@ struct sbus_node;
|
|
* };
|
|
*/
|
|
#define SBUS_PROPERTIES(...) \
|
|
- (const struct sbus_property[]) { \
|
|
+ { \
|
|
__VA_ARGS__, \
|
|
SBUS_INTERFACE_SENTINEL \
|
|
}
|
|
@@ -228,6 +228,11 @@ struct sbus_node;
|
|
/**
|
|
* Create and sbus interface.
|
|
*
|
|
+ * @param varname Name of the variable that will hold the interface
|
|
+ * description. It is created as:
|
|
+ * struct sbus_interface varname;
|
|
+ * You can refer to it later when creating 'sbus_path'
|
|
+ * structure as &varname.
|
|
* @param iface Name of the interface with dots replaced
|
|
* with underscore. (token, not a string)
|
|
* @param methods Methods on the interface.
|
|
@@ -239,8 +244,15 @@ struct sbus_node;
|
|
*
|
|
* @see SBUS_METHODS, SBUS_SIGNALS, SBUS_PROPERTIES to create those arguments.
|
|
*/
|
|
-#define SBUS_INTERFACE(iface, methods, signals, properties) \
|
|
- SBUS_IFACE_ ## iface((methods), (signals), (properties))
|
|
+#define SBUS_INTERFACE(varname, iface, methods, signals, properties) \
|
|
+ const struct sbus_method __ ## varname ## _m[] = methods; \
|
|
+ const struct sbus_signal __ ## varname ## _s[] = signals; \
|
|
+ const struct sbus_property __ ## varname ## _p[] = properties; \
|
|
+ struct sbus_interface varname = SBUS_IFACE_ ## iface( \
|
|
+ (__ ## varname ## _m), \
|
|
+ (__ ## varname ## _s), \
|
|
+ (__ ## varname ## _p) \
|
|
+ )
|
|
|
|
/**
|
|
* Create a new sbus synchronous handler.
|
|
diff --git a/src/sbus/server/sbus_server_interface.c b/src/sbus/server/sbus_server_interface.c
|
|
index 695d4d09b..9c0ba0abb 100644
|
|
--- a/src/sbus/server/sbus_server_interface.c
|
|
+++ b/src/sbus/server/sbus_server_interface.c
|
|
@@ -387,7 +387,7 @@ sbus_server_setup_interface(struct sbus_server *server)
|
|
{
|
|
errno_t ret;
|
|
|
|
- struct sbus_interface bus = SBUS_INTERFACE(
|
|
+ SBUS_INTERFACE(bus,
|
|
org_freedesktop_DBus,
|
|
SBUS_METHODS(
|
|
SBUS_SYNC(METHOD, org_freedesktop_DBus, Hello, sbus_server_bus_hello, server),
|
|
--
|
|
2.20.1
|
|
|