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authorJuergen Beisert <j.beisert@pengutronix.de>2007-11-09 23:19:54 +0100
committerJuergen Beisert <j.beisert@pengutronix.de>2007-11-12 16:28:23 +0100
commit8413d78ab3e3062641dbe3069fcd454858244679 (patch)
tree5d6ba1e6b049c0b8c12ee703851ec410a6c5763e /commands/saveenv.c
parent2966bba2160e3d9e828c1eadcd9a35a84878e664 (diff)
downloadbarebox-8413d78ab3e3062641dbe3069fcd454858244679.tar.gz
separating environment commands, part 2
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Diffstat (limited to 'commands/saveenv.c')
-rw-r--r--commands/saveenv.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/commands/saveenv.c b/commands/saveenv.c
new file mode 100644
index 0000000..ef195bc
--- /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.
+ */