kernelkit · mattiaswal · Mar 27, 2026 · Mar 28, 2026 · Mar 31, 2026 · Mar 31, 2026
diff --git a/configs/aarch64_defconfig b/configs/aarch64_defconfig
@@ -162,6 +162,7 @@ BR2_PACKAGE_CURIOS_HTTPD=y
 BR2_PACKAGE_CURIOS_NFTABLES=y
 BR2_PACKAGE_GENCERT=y
 BR2_PACKAGE_STATD=y
+BR2_PACKAGE_YANGERD=y
 BR2_PACKAGE_FACTORY=y
 BR2_PACKAGE_FINIT_PLUGIN_HOTPLUG=y
 BR2_PACKAGE_FINIT_PLUGIN_HOOK_SCRIPTS=y

diff --git a/configs/aarch64_minimal_defconfig b/configs/aarch64_minimal_defconfig
@@ -131,6 +131,7 @@ BR2_PACKAGE_NETD=y
 BR2_PACKAGE_CONFD_TEST_MODE=y
 BR2_PACKAGE_GENCERT=y
 BR2_PACKAGE_STATD=y
+BR2_PACKAGE_YANGERD=y
 BR2_PACKAGE_FACTORY=y
 BR2_PACKAGE_FINIT_PLUGIN_HOTPLUG=y
 BR2_PACKAGE_FINIT_PLUGIN_HOOK_SCRIPTS=y

diff --git a/configs/arm_defconfig b/configs/arm_defconfig
@@ -150,6 +150,7 @@ BR2_PACKAGE_NETD=y
 BR2_PACKAGE_CONFD_TEST_MODE=y
 BR2_PACKAGE_GENCERT=y
 BR2_PACKAGE_STATD=y
+BR2_PACKAGE_YANGERD=y
 BR2_PACKAGE_FACTORY=y
 BR2_PACKAGE_FINIT_PLUGIN_HOTPLUG=y
 BR2_PACKAGE_FINIT_PLUGIN_HOOK_SCRIPTS=y

diff --git a/configs/arm_minimal_defconfig b/configs/arm_minimal_defconfig
@@ -129,6 +129,7 @@ BR2_PACKAGE_NETD=y
 BR2_PACKAGE_CONFD_TEST_MODE=y
 BR2_PACKAGE_GENCERT=y
 BR2_PACKAGE_STATD=y
+BR2_PACKAGE_YANGERD=y
 BR2_PACKAGE_FACTORY=y
 BR2_PACKAGE_FINIT_PLUGIN_HOTPLUG=y
 BR2_PACKAGE_FINIT_PLUGIN_HOOK_SCRIPTS=y

diff --git a/configs/riscv64_defconfig b/configs/riscv64_defconfig
@@ -182,6 +182,7 @@ BR2_PACKAGE_CONFD=y
 BR2_PACKAGE_NETD=y
 BR2_PACKAGE_GENCERT=y
 BR2_PACKAGE_STATD=y
+BR2_PACKAGE_YANGERD=y
 BR2_PACKAGE_FACTORY=y
 BR2_PACKAGE_FINIT_PLUGIN_HOTPLUG=y
 BR2_PACKAGE_FINIT_PLUGIN_HOOK_SCRIPTS=y

diff --git a/configs/x86_64_defconfig b/configs/x86_64_defconfig
@@ -156,6 +156,7 @@ BR2_PACKAGE_CURIOS_HTTPD=y
 BR2_PACKAGE_CURIOS_NFTABLES=y
 BR2_PACKAGE_GENCERT=y
 BR2_PACKAGE_STATD=y
+BR2_PACKAGE_YANGERD=y
 BR2_PACKAGE_FACTORY=y
 BR2_PACKAGE_FINIT_PLUGIN_HOTPLUG=y
 BR2_PACKAGE_FINIT_PLUGIN_HOOK_SCRIPTS=y

diff --git a/configs/x86_64_minimal_defconfig b/configs/x86_64_minimal_defconfig
@@ -128,6 +128,7 @@ BR2_PACKAGE_NETD=y
 BR2_PACKAGE_CONFD_TEST_MODE=y
 BR2_PACKAGE_GENCERT=y
 BR2_PACKAGE_STATD=y
+BR2_PACKAGE_YANGERD=y
 BR2_PACKAGE_FACTORY=y
 BR2_PACKAGE_FINIT_PLUGIN_HOTPLUG=y
 BR2_PACKAGE_FINIT_PLUGIN_HOOK_SCRIPTS=y

diff --git a/package/Config.in b/package/Config.in
@@ -13,6 +13,7 @@ source "$BR2_EXTERNAL_INFIX_PATH/package/curios-httpd/Config.in"
 source "$BR2_EXTERNAL_INFIX_PATH/package/curios-nftables/Config.in"
 source "$BR2_EXTERNAL_INFIX_PATH/package/gencert/Config.in"
 source "$BR2_EXTERNAL_INFIX_PATH/package/statd/Config.in"
+source "$BR2_EXTERNAL_INFIX_PATH/package/yangerd/Config.in"
 source "$BR2_EXTERNAL_INFIX_PATH/package/factory/Config.in"
 source "$BR2_EXTERNAL_INFIX_PATH/package/faux/Config.in"
 source "$BR2_EXTERNAL_INFIX_PATH/package/finit/Config.in"

diff --git a/package/yangerd/Config.in b/package/yangerd/Config.in
@@ -0,0 +1,7 @@
+config BR2_PACKAGE_YANGERD
+	bool "yangerd"
+	depends on BR2_PACKAGE_HOST_GO_TARGET_ARCH_SUPPORTS
+	help
+	  Operational data daemon for YANG/NETCONF/RESTCONF.
+	  Replaces Python yanger scripts with a persistent Go daemon
+	  serving operational data over a Unix socket IPC protocol.
diff --git a/package/yangerd/yangerd.conf b/package/yangerd/yangerd.conf
@@ -0,0 +1,3 @@
+service <> name:yangerd log:prio:daemon.notice,tag:yangerd \
+	env:-/etc/default/yangerd \
+	[2345]  yangerd -- Operational data daemon
diff --git a/package/yangerd/yangerd.mk b/package/yangerd/yangerd.mk
@@ -0,0 +1,35 @@
+################################################################################
+#
+# yangerd
+#
+################################################################################
+
+YANGERD_VERSION = 1.0.0
+YANGERD_SITE = $(BR2_EXTERNAL_INFIX_PATH)/src/yangerd
+YANGERD_SITE_METHOD = local
+YANGERD_GOMOD = github.com/kernelkit/infix/src/yangerd
+YANGERD_LICENSE = BSD-2-Clause
+YANGERD_LICENSE_FILES = LICENSE
+YANGERD_REDISTRIBUTE = NO
+
+YANGERD_BUILD_TARGETS = cmd/yangerd cmd/yangerctl
+YANGERD_INSTALL_BINS = yangerd yangerctl
+
+define YANGERD_INSTALL_EXTRA
+	$(INSTALL) -D -m 0644 $(YANGERD_PKGDIR)/yangerd.conf \
+		$(FINIT_D)/available/yangerd.conf
+	ln -sf ../available/yangerd.conf $(FINIT_D)/enabled/yangerd.conf
+	$(INSTALL) -d $(TARGET_DIR)/etc/default
+	echo '# yangerd build-time feature flags (generated by yangerd.mk)' \
+		> $(TARGET_DIR)/etc/default/yangerd
+	echo 'YANGERD_ENABLE_WIFI=$(if $(BR2_PACKAGE_IW),true,false)' \
+		>> $(TARGET_DIR)/etc/default/yangerd
+	echo 'YANGERD_ENABLE_CONTAINERS=$(if $(BR2_PACKAGE_PODMAN),true,false)' \
+		>> $(TARGET_DIR)/etc/default/yangerd
+	echo 'YANGERD_ENABLE_GPS=$(if $(BR2_PACKAGE_GPSD),true,false)' \
+		>> $(TARGET_DIR)/etc/default/yangerd
+	echo 'YANGERD_LOG_LEVEL=deug' >> $(TARGET_DIR)/etc/default/yangerd
+endef
+YANGERD_POST_INSTALL_TARGET_HOOKS += YANGERD_INSTALL_EXTRA
+
+$(eval $(golang-package))
diff --git a/src/confd/src/core.c b/src/confd/src/core.c
@@ -674,6 +674,15 @@ static int change_cb(sr_session_ctx_t *session, uint32_t sub_id, const char *mod
 			return SR_ERR_SYS;
 		}
 
+		/*
+		  Send sighup to yangerd to trigger a poll of polled values.
+		  This will make sure that there is no stale data.
+		*/
+		if (systemf("initctl -b reload yangerd")) {
+			EMERG("Failed reloading yangerd");
+			return SR_ERR_SYS;
+		}
+
 		AUDIT("The new configuration has been applied.");
 	}
 

diff --git a/src/statd/Makefile.am b/src/statd/Makefile.am
@@ -2,7 +2,7 @@ DISTCLEANFILES      = *~ *.d
 ACLOCAL_AMFLAGS     = -I m4
 
 sbin_PROGRAMS       = statd
-statd_SOURCES       = statd.c shared.c shared.h journal.c journal_retention.c journal.h avahi.c avahi.h
+statd_SOURCES       = statd.c shared.c shared.h journal.c journal_retention.c journal.h avahi.c avahi.h yangerd.c yangerd.h
 statd_CPPFLAGS      = -D_DEFAULT_SOURCE -D_GNU_SOURCE
 statd_CFLAGS        = -W -Wall -Wextra
 statd_CFLAGS       += $(jansson_CFLAGS) $(libyang_CFLAGS) $(sysrepo_CFLAGS)