104 lines
2.3 KiB
C
104 lines
2.3 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 loadenv: Restoring a environment
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <getopt.h>
|
|
#include <command.h>
|
|
#include <envfs.h>
|
|
#include <errno.h>
|
|
#include <fs.h>
|
|
|
|
static int do_loadenv(int argc, char *argv[])
|
|
{
|
|
char *filename, *dirname;
|
|
unsigned flags = 0;
|
|
int opt;
|
|
int scrub = 0;
|
|
|
|
while ((opt = getopt(argc, argv, "ns")) > 0) {
|
|
switch (opt) {
|
|
case 'n':
|
|
flags |= ENV_FLAG_NO_OVERWRITE;
|
|
break;
|
|
case 's':
|
|
scrub = 1;
|
|
break;
|
|
default:
|
|
return COMMAND_ERROR_USAGE;
|
|
}
|
|
}
|
|
|
|
if (argc - optind < 2)
|
|
dirname = "/env";
|
|
else
|
|
dirname = argv[optind + 1];
|
|
|
|
if (argc - optind < 1)
|
|
filename = default_environment_path;
|
|
else
|
|
filename = argv[optind];
|
|
|
|
if (scrub) {
|
|
int ret;
|
|
|
|
ret = unlink_recursive(dirname, NULL);
|
|
if (ret) {
|
|
eprintf("cannot remove %s: %s\n", dirname,
|
|
strerror(-ret));
|
|
return 1;
|
|
}
|
|
|
|
ret = mkdir(dirname, 0);
|
|
if (ret) {
|
|
eprintf("cannot create %s: %s\n", dirname,
|
|
strerror(-ret));
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
printf("loading environment from %s\n", filename);
|
|
|
|
return envfs_load(filename, dirname, flags);
|
|
}
|
|
|
|
BAREBOX_CMD_HELP_START(loadenv)
|
|
BAREBOX_CMD_HELP_USAGE("loadenv OPTIONS [ENVFS] [DIRECTORY]\n")
|
|
BAREBOX_CMD_HELP_OPT("-n", "do not overwrite existing files\n")
|
|
BAREBOX_CMD_HELP_OPT("-s", "scrub old environment\n")
|
|
BAREBOX_CMD_HELP_SHORT("Load environment from ENVFS into DIRECTORY (default: /dev/env0 -> /env).\n")
|
|
BAREBOX_CMD_HELP_END
|
|
|
|
/**
|
|
* @page loadenv_command
|
|
|
|
ENVFS can only handle files, directories are skipped silently.
|
|
|
|
\todo This needs proper documentation. What is ENVFS, why is it FS etc. Explain the concepts.
|
|
|
|
*/
|
|
|
|
BAREBOX_CMD_START(loadenv)
|
|
.cmd = do_loadenv,
|
|
.usage = "Load environment from ENVFS into DIRECTORY (default: /dev/env0 -> /env).",
|
|
BAREBOX_CMD_HELP(cmd_loadenv_help)
|
|
BAREBOX_CMD_END
|