home: when adding a binding for a user record, use common code for determining automatic image path

Make use of the new user_record_build_image_path() helper the previous
commit added to share some code.

Also, let's make sure we update all parsed-out fields with the new data
from the binding, so that the parsed-out fields are definitely
up-to-date.

src/home/homework.c

@@ -921,12 +921,6 @@ static int home_create(UserRecord *h, UserRecord **ret_home) {
                                 GID_INVALID);
                 if (r < 0)
                         return log_error_errno(r, "Failed to change storage type to LUKS: %m");
-
-                if (!h->image_path_auto) {
-                        h->image_path_auto = strjoin("/home/", user_record_user_name_and_realm(h), new_storage == USER_LUKS ? ".home" : ".homedir");
-                        if (!h->image_path_auto)
-                                return log_oom();
-                }
         }
 
         r = user_record_test_image_path_and_warn(h);

src/home/user-record-util.c

@@ -276,7 +276,7 @@ int user_record_add_binding(
 
         _cleanup_(json_variant_unrefp) JsonVariant *new_binding_entry = NULL, *binding = NULL;
         char smid[SD_ID128_STRING_MAX], partition_uuids[37], luks_uuids[37], fs_uuids[37];
-        _cleanup_free_ char *ip = NULL, *hd = NULL;
+        _cleanup_free_ char *ip = NULL, *hd = NULL, *ip_auto = NULL, *lc = NULL, *lcm = NULL, *fst = NULL;
         sd_id128_t mid;
         int r;
 
@@ -294,6 +294,10 @@ int user_record_add_binding(
                 ip = strdup(image_path);
                 if (!ip)
                         return -ENOMEM;
+        } else if (!h->image_path && storage >= 0) {
+                r = user_record_build_image_path(storage, user_record_user_name_and_realm(h), &ip_auto);
+                if (r < 0)
+                        return r;
         }
 
         if (home_directory) {
@@ -302,6 +306,24 @@ int user_record_add_binding(
                         return -ENOMEM;
         }
 
+        if (file_system_type) {
+                fst = strdup(file_system_type);
+                if (!fst)
+                        return -ENOMEM;
+        }
+
+        if (luks_cipher) {
+                lc = strdup(luks_cipher);
+                if (!lc)
+                        return -ENOMEM;
+        }
+
+        if (luks_cipher_mode) {
+                lcm = strdup(luks_cipher_mode);
+                if (!lcm)
+                        return -ENOMEM;
+        }
+
         r = json_build(&new_binding_entry,
                        JSON_BUILD_OBJECT(
                                        JSON_BUILD_PAIR_CONDITION(!!image_path, "imagePath", JSON_BUILD_STRING(image_path)),
@@ -348,6 +370,8 @@ int user_record_add_binding(
 
         if (ip)
                 free_and_replace(h->image_path, ip);
+        if (ip_auto)
+                free_and_replace(h->image_path_auto, ip_auto);
 
         if (!sd_id128_is_null(partition_uuid))
                 h->partition_uuid = partition_uuid;
@@ -358,11 +382,22 @@ int user_record_add_binding(
         if (!sd_id128_is_null(fs_uuid))
                 h->file_system_uuid = fs_uuid;
 
+        if (lc)
+                free_and_replace(h->luks_cipher, lc);
+        if (lcm)
+                free_and_replace(h->luks_cipher_mode, lcm);
+        if (luks_volume_key_size != UINT64_MAX)
+                h->luks_volume_key_size = luks_volume_key_size;
+
+        if (fst)
+                free_and_replace(h->file_system_type, fst);
         if (hd)
                 free_and_replace(h->home_directory, hd);
 
         if (uid_is_valid(uid))
                 h->uid = uid;
+        if (gid_is_valid(gid))
+                h->gid = gid;
 
         h->mask |= USER_RECORD_BINDING;
         return 1;