+static int config_parse_env_file(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ FILE *f;
+ int r;
+ char ***env = data;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (!(f = fopen(rvalue, "re"))) {
+ log_error("[%s:%u] Failed to open environment file '%s': %m", filename, line, rvalue);
+ return -errno;
+ }
+
+ while (!feof(f)) {
+ char l[LINE_MAX], *p;
+ char **t;
+
+ if (!fgets(l, sizeof(l), f)) {
+ if (feof(f))
+ break;
+
+ r = -errno;
+ log_error("[%s:%u] Failed to read environment file '%s': %m", filename, line, rvalue);
+ goto finish;
+ }
+
+ p = strstrip(l);
+
+ if (!*p)
+ continue;
+
+ if (strchr(COMMENTS, *p))
+ continue;
+
+ t = strv_env_set(*env, p);
+ strv_free(*env);
+ *env = t;
+ }
+
+ r = 0;
+
+finish:
+ if (f)
+ fclose(f);
+
+ return r;
+}
+