From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 22 Nov 2023 04:05:26 +0000 (+0900)
Subject: sd-device: introduce device_has_db() helper function
X-Git-Tag: v256-rc1~1400^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F30596%2Fhead;p=thirdparty%2Fsystemd.git

sd-device: introduce device_has_db() helper function
---

diff --git a/src/libsystemd/sd-device/device-private.c b/src/libsystemd/sd-device/device-private.c
index 90df3f724d8..cd85ec9c629 100644
--- a/src/libsystemd/sd-device/device-private.c
+++ b/src/libsystemd/sd-device/device-private.c
@@ -809,6 +809,19 @@ static int device_get_db_path(sd_device *device, char **ret) {
         return 0;
 }
 
+int device_has_db(sd_device *device) {
+        _cleanup_free_ char *path = NULL;
+        int r;
+
+        assert(device);
+
+        r = device_get_db_path(device, &path);
+        if (r < 0)
+                return r;
+
+        return access(path, F_OK) >= 0;
+}
+
 int device_update_db(sd_device *device) {
         _cleanup_(unlink_and_freep) char *path = NULL, *path_tmp = NULL;
         _cleanup_fclose_ FILE *f = NULL;
diff --git a/src/libsystemd/sd-device/device-private.h b/src/libsystemd/sd-device/device-private.h
index a0161e7c12a..79a0013dc71 100644
--- a/src/libsystemd/sd-device/device-private.h
+++ b/src/libsystemd/sd-device/device-private.h
@@ -59,6 +59,7 @@ int device_clone_with_db(sd_device *device, sd_device **ret);
 
 int device_tag_index(sd_device *dev, sd_device *dev_old, bool add);
 bool device_should_have_db(sd_device *device);
+int device_has_db(sd_device *device);
 int device_update_db(sd_device *device);
 int device_delete_db(sd_device *device);
 int device_read_db_internal_filename(sd_device *device, const char *filename); /* For fuzzer */