environment.h is for environment variables, not for the environment storage (envfs), so move the prototypes to envfs.h Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief saveenv: Make the environment persistent
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <errno.h>
|
|
#include <fs.h>
|
|
#include <fcntl.h>
|
|
#include <envfs.h>
|
|
|
|
static int do_saveenv(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 = default_environment_path;
|
|
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;
|
|
}
|
|
|
|
BAREBOX_CMD_HELP_START(saveenv)
|
|
BAREBOX_CMD_HELP_USAGE("saveenv [envfs] [directory]\n")
|
|
BAREBOX_CMD_HELP_SHORT("Save the files in <directory> to the persistent storage device <envfs>.\n")
|
|
BAREBOX_CMD_HELP_END
|
|
|
|
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
|
|
|
|
<p>\<envfs> is usually a block in flash but can be any other file. If
|
|
omitted, \<directory> defaults to /env and \<envfs> defaults to
|
|
/dev/env0. Note that envfs can only handle files, directories are being
|
|
skipped silently.</p>
|
|
|
|
\todo What does 'block in flash' mean? Add example.
|
|
|
|
*/
|
|
|