From 76aebe6fec5894b05114fdf1e8aee54139bef69e Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 1 Sep 2021 09:22:15 +0900
Subject: [PATCH] sd-device: introduce device_has_devlink()

(cherry picked from commit b881ce16b9ccae4c3089c82e2ea1781cd9773a4f)

Related: #1977994
---
 src/libsystemd/sd-device/device-private.h | 1 +
 src/libsystemd/sd-device/sd-device.c      | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/src/libsystemd/sd-device/device-private.h b/src/libsystemd/sd-device/device-private.h
index fe268d7f2f..9bb5eff208 100644
--- a/src/libsystemd/sd-device/device-private.h
+++ b/src/libsystemd/sd-device/device-private.h
@@ -32,6 +32,7 @@ void device_set_db_persist(sd_device *device);
 void device_set_devlink_priority(sd_device *device, int priority);
 int device_ensure_usec_initialized(sd_device *device, sd_device *device_old);
 int device_add_devlink(sd_device *device, const char *devlink);
+bool device_has_devlink(sd_device *device, const char *devlink);
 int device_add_property(sd_device *device, const char *property, const char *value);
 int device_add_tag(sd_device *device, const char *tag, bool both);
 void device_remove_tag(sd_device *device, const char *tag);
diff --git a/src/libsystemd/sd-device/sd-device.c b/src/libsystemd/sd-device/sd-device.c
index 388128bf33..8a9e4a33a1 100644
--- a/src/libsystemd/sd-device/sd-device.c
+++ b/src/libsystemd/sd-device/sd-device.c
@@ -1193,6 +1193,13 @@ int device_add_devlink(sd_device *device, const char *devlink) {
         return 0;
 }
 
+bool device_has_devlink(sd_device *device, const char *devlink) {
+        assert(device);
+        assert(devlink);
+
+        return set_contains(device->devlinks, devlink);
+}
+
 static int device_add_property_internal_from_string(sd_device *device, const char *str) {
         _cleanup_free_ char *key = NULL;
         char *value;