static int do_saveenv(int argc, char *argv[])
{
int ret, opt;
unsigned envfs_flags = 0;
char *filename = NULL, *dirname = NULL;
printf("saving environment\n");
while ((opt = getopt(argc, argv, "z")) > 0) {
switch (opt) {
case 'z':
envfs_flags |= ENVFS_FLAGS_FORCE_BUILT_IN;
break;
}
}
/* destination and source are given? */
if (argc - optind > 1)
dirname = argv[optind + 1];
/* destination only given? */
if (argc - optind > 0)
filename = argv[optind];
ret = envfs_save(filename, dirname, envfs_flags);
return ret;
}
int main(int argc, char *argv[])
{
int opt;
int save = 0, load = 0, pad = 0, fd;
char *filename = NULL, *dirname = NULL;
while((opt = getopt(argc, argv, "slp:")) != -1) {
switch (opt) {
case 's':
save = 1;
break;
case 'l':
load = 1;
break;
case 'p':
pad = strtoul(optarg, NULL, 0);
break;
}
}
if (optind + 1 >= argc) {
usage(argv[0]);
exit(1);
}
dirname = argv[optind];
filename = argv[optind + 1];
if ((!load && !save) || (load && save) || !filename || !dirname) {
usage(argv[0]);
exit(1);
}
if (save) {
fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0644);
if (fd < 0) {
perror("open");
exit(1);
}
close(fd);
}
if (save && pad) {
if (truncate(filename, pad)) {
perror("truncate");
exit(1);
}
}
if (load) {
printf("loading env from file %s to %s\n", filename, dirname);
envfs_load(filename, dirname);
}
if (save) {
printf("saving contents of %s to file %s\n", dirname, filename);
envfs_save(filename, dirname);
}
exit(0);
}
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_get();
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;
}
