src/libsystemd/sd-device/sd-device.c

@@ -2022,17 +2022,13 @@ _public_ int sd_device_get_sysattr_value(sd_device *device, const char *sysattr,
                 /* skip non-readable files */
                 return -EPERM;
         else {
-                size_t size;
-
-                /* Read attribute value, Some attributes contain embedded '\0'. So, it is necessary to
-                 * also get the size of the result. See issue #20025. */
-                r = read_full_virtual_file(path, &value, &size);
+                /* read attribute value */
+                r = read_full_virtual_file(path, &value, NULL);
                 if (r < 0)
                         return r;
 
                 /* drop trailing newlines */
-                while (size > 0 && strchr(NEWLINE, value[--size]))
-                        value[size] = '\0';
+                delete_trailing_chars(value, "\n");
         }
 
         /* Unfortunately, we need to return 'const char*' instead of 'char*'. Hence, failure in caching