From 8413d78ab3e3062641dbe3069fcd454858244679 Mon Sep 17 00:00:00 2001
From: Juergen Beisert <j.beisert@pengutronix.de>
Date: Fri, 9 Nov 2007 23:19:54 +0100
Subject: separating environment commands, part 2

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
---
 commands/saveenv.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 commands/saveenv.c

(limited to 'commands/saveenv.c')

diff --git a/commands/saveenv.c b/commands/saveenv.c
new file mode 100644
index 0000000000..ef195bc13e
--- /dev/null
+++ b/commands/saveenv.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/**
+ * @file
+ * @brief saveenv: Make the environment persistent
+ */
+
+#include <common.h>
+#include <command.h>
+#include <errno.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <environment.h>
+
+static int do_saveenv(cmd_tbl_t *cmdtp, int argc, char *argv[])
+{
+	int ret, fd;
+	char *filename, *dirname;
+
+	printf("saving environment\n");
+	if (argc < 3)
+		dirname = "/env";
+	else
+		dirname = argv[2];
+	if (argc < 2)
+		filename = "/dev/env0";
+	else
+		filename = argv[1];
+
+	fd = open(filename, O_WRONLY | O_CREAT);
+	if (fd < 0) {
+		printf("could not open %s: %s", filename, errno_str());
+		return 1;
+	}
+
+	ret = protect(fd, ~0, 0, 0);
+
+	/* ENOSYS is no error here, many devices do not need it */
+	if (ret && errno != -ENOSYS) {
+		printf("could not unprotect %s: %s\n", filename, errno_str());
+		close(fd);
+		return 1;
+	}
+
+	ret = erase(fd, ~0, 0);
+
+	/* ENOSYS is no error here, many devices do not need it */
+	if (ret && errno != -ENOSYS) {
+		printf("could not erase %s: %s\n", filename, errno_str());
+		close(fd);
+		return 1;
+	}
+
+	ret = envfs_save(filename, dirname);
+	if (ret) {
+		printf("saveenv failed\n");
+		goto out;
+	}
+
+	ret = protect(fd, ~0, 0, 1);
+
+	/* ENOSYS is no error here, many devices do not need it */
+	if (ret && errno != -ENOSYS) {
+		printf("could not protect %s: %s\n", filename, errno_str());
+		close(fd);
+		return 1;
+	}
+
+	ret = 0;
+out:
+	close(fd);
+	return ret;
+}
+
+static __maybe_unused char cmd_saveenv_help[] =
+"Usage: saveenv [<envfs>] [<directory>]\n"
+"Save the files in <directory> to the persistent storage device <envfs>.\n"
+"<envfs> is normally a block in flash, but could be any other file.\n"
+"If ommitted <directory> defaults to /env and <envfs> defaults to /dev/env0.\n"
+"Note that envfs can only handle files. Directories are skipped silently.\n";
+
+U_BOOT_CMD_START(saveenv)
+	.maxargs	= 3,
+	.cmd		= do_saveenv,
+	.usage		= "save environment to persistent storage",
+	U_BOOT_CMD_HELP(cmd_saveenv_help)
+U_BOOT_CMD_END
+
+/**
+ * @page saveenv_command saveenv
+ *
+ * Usage: saveenv [\<envfs>] [\<directory>]
+ *
+ * Save the files in \<directory> to the persistent storage device \<envfs>.
+ * \<envfs> is normally a block in flash, but could be any other file.
+ *
+ * If ommitted \<directory> defaults to \c /env and \<envfs> defaults to
+ * \c /dev/env0.
+ *
+ * @note envfs can only handle files. Directories are skipped silently.
+ */
-- 
cgit v1.2.3