1 files changed, 72 insertions, 0 deletions
diff --git a/src/shared/kernel-config.c b/src/shared/kernel-config.c
new file mode 100644
index 0000000..483ca28
--- /dev/null
+++ b/src/shared/kernel-config.c
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+
+#include "conf-parser.h"
+#include "kernel-config.h"
+#include "macro.h"
+#include "path-util.h"
+#include "strv.h"
+
+int load_kernel_install_conf(
+                const char *root,
+                const char *conf_root,
+                char **ret_machine_id,
+                char **ret_boot_root,
+                char **ret_layout,
+                char **ret_initrd_generator,
+                char **ret_uki_generator) {
+
+        _cleanup_free_ char *machine_id = NULL, *boot_root = NULL, *layout = NULL,
+                            *initrd_generator = NULL, *uki_generator = NULL;
+        const ConfigTableItem items[] = {
+                { NULL, "MACHINE_ID",       config_parse_string, 0, &machine_id       },
+                { NULL, "BOOT_ROOT",        config_parse_string, 0, &boot_root        },
+                { NULL, "layout",           config_parse_string, 0, &layout           },
+                { NULL, "initrd_generator", config_parse_string, 0, &initrd_generator },
+                { NULL, "uki_generator",    config_parse_string, 0, &uki_generator    },
+                {}
+        };
+        int r;
+
+        if (conf_root) {
+                _cleanup_free_ char *conf = path_join(conf_root, "install.conf");
+                if (!conf)
+                        return log_oom();
+
+                r = config_parse_many(
+                                STRV_MAKE_CONST(conf),
+                                STRV_MAKE_CONST(conf_root),
+                                "install.conf.d",
+                                /* root= */ NULL, /* $KERNEL_INSTALL_CONF_ROOT and --root are independent */
+                                /* sections= */ NULL,
+                                config_item_table_lookup, items,
+                                CONFIG_PARSE_WARN,
+                                /* userdata= */ NULL,
+                                /* ret_stats_by_path= */ NULL,
+                                /* ret_dropin_files= */ NULL);
+        } else
+                r = config_parse_standard_file_with_dropins_full(
+                                root,
+                                "kernel/install.conf",
+                                /* sections= */ NULL,
+                                config_item_table_lookup, items,
+                                CONFIG_PARSE_WARN,
+                                /* userdata= */ NULL,
+                                /* ret_stats_by_path= */ NULL,
+                                /* ret_dropin_files= */ NULL);
+        if (r < 0 && r != -ENOENT)
+                return r;
+
+        if (ret_machine_id)
+                *ret_machine_id = TAKE_PTR(machine_id);
+        if (ret_boot_root)
+                *ret_boot_root = TAKE_PTR(boot_root);
+        if (ret_layout)
+                *ret_layout = TAKE_PTR(layout);
+        if (ret_initrd_generator)
+                *ret_initrd_generator = TAKE_PTR(initrd_generator);
+        if (ret_uki_generator)
+                *ret_uki_generator = TAKE_PTR(uki_generator);
+        return r >= 0;  /* Return 0 if we got -ENOENT above, 1 otherwise. */
+}