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/*
* 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\n", 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;
}
close(fd);
ret = envfs_save(filename, dirname);
if (ret) {
printf("saveenv failed\n");
goto out;
}
fd = open(filename, O_WRONLY | O_CREAT);
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 const __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";
BAREBOX_CMD_START(saveenv)
.cmd = do_saveenv,
.usage = "save environment to persistent storage",
BAREBOX_CMD_HELP(cmd_saveenv_help)
BAREBOX_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.
*/
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