From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 package/boot/uboot-oxnas/files/common/env_ext4.c | 116 +++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 package/boot/uboot-oxnas/files/common/env_ext4.c

(limited to 'package/boot/uboot-oxnas/files/common/env_ext4.c')

diff --git a/package/boot/uboot-oxnas/files/common/env_ext4.c b/package/boot/uboot-oxnas/files/common/env_ext4.c
new file mode 100644
index 0000000..e98d94d
--- /dev/null
+++ b/package/boot/uboot-oxnas/files/common/env_ext4.c
@@ -0,0 +1,116 @@
+/*
+ * (c) Copyright 2011 by Tigris Elektronik GmbH
+ *
+ * Author:
+ *  Maximilian Schwerin <mvs@tigris.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <command.h>
+#include <environment.h>
+#include <linux/stddef.h>
+#include <malloc.h>
+#include <search.h>
+#include <errno.h>
+#include <ext4fs.h>
+
+char *env_name_spec = "EXT4";
+
+env_t *env_ptr;
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int env_init(void)
+{
+	/* use default */
+	gd->env_addr = (ulong)&default_environment[0];
+	gd->env_valid = 1;
+
+	return 0;
+}
+
+#ifdef CONFIG_CMD_SAVEENV
+int saveenv(void)
+{
+	env_t	env_new;
+	ssize_t	len;
+	char	*res;
+	block_dev_desc_t *dev_desc = NULL;
+	int dev = EXT4_ENV_DEVICE;
+	int part = EXT4_ENV_PART;
+	int err;
+
+	res = (char *)&env_new.data;
+	len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
+	if (len < 0) {
+		error("Cannot export environment: errno = %d\n", errno);
+		return 1;
+	}
+
+	dev_desc = get_dev(EXT4_ENV_INTERFACE, dev);
+	if (dev_desc == NULL) {
+		printf("Failed to find %s%d\n",
+			EXT4_ENV_INTERFACE, dev);
+		return 1;
+	}
+
+	err = ext4_register_device(dev_desc, part);
+	if (err) {
+		printf("Failed to register %s%d:%d\n",
+			EXT4_ENV_INTERFACE, dev, part);
+		return 1;
+	}
+
+	env_new.crc = crc32(0, env_new.data, ENV_SIZE);
+	err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
+	ext4fs_close();
+	if (err == -1) {
+		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
+			EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
+		return 1;
+	}
+
+	puts("done\n");
+	return 0;
+}
+#endif /* CONFIG_CMD_SAVEENV */
+
+void env_relocate_spec(void)
+{
+	char buf[CONFIG_ENV_SIZE];
+	block_dev_desc_t *dev_desc = NULL;
+	int dev = EXT4_ENV_DEVICE;
+	int part = EXT4_ENV_PART;
+	int err;
+
+	dev_desc = get_dev(EXT4_ENV_INTERFACE, dev);
+	if (dev_desc == NULL) {
+		printf("Failed to find %s%d\n",
+			EXT4_ENV_INTERFACE, dev);
+		set_default_env(NULL);
+		return;
+	}
+
+	err = ext4_register_device(dev_desc, part);
+	if (err) {
+		printf("Failed to register %s%d:%d\n",
+			EXT4_ENV_INTERFACE, dev, part);
+		set_default_env(NULL);
+		return;
+	}
+
+	err = ext4_read_file(EXT4_ENV_FILE, (uchar *)&buf, 0, CONFIG_ENV_SIZE);
+	ext4fs_close();
+
+	if (err == -1) {
+		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
+			EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
+		set_default_env(NULL);
+		return;
+	}
+
+	env_import(buf, 1);
+}
-- 
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