int main(int argc, char *argv[])
{
int a_flag=0;
int u_flag=0;
int n_flag=0;
char *n_name=NULL;
char *n_blk_dev=NULL;
char *fstab_file=NULL;
struct fstab *fstab=NULL;
klog_set_level(6);
parse_options(argc, argv, &a_flag, &u_flag, &n_flag, &n_name, &n_blk_dev);
/* The name of the fstab file is last, after the option */
fstab_file = argv[argc - 1];
fstab = fs_mgr_read_fstab(fstab_file);
if (a_flag) {
return fs_mgr_mount_all(fstab);
} else if (n_flag) {
return fs_mgr_do_mount(fstab, n_name, n_blk_dev, 0);
} else if (u_flag) {
return fs_mgr_unmount_all(fstab);
} else {
ERROR("%s: Internal error, unknown option\n", me);
exit(1);
}
fs_mgr_free_fstab(fstab);
/* Should not get here */
exit(1);
}
// Check to see if a mountable volume has encryption requirements
static int handle_encryptable(struct fstab *fstab, const struct fstab_rec* rec)
{
/* If this is block encryptable, need to trigger encryption */
if ( (rec->fs_mgr_flags & MF_FORCECRYPT)
|| (device_is_force_encrypted() && fs_mgr_is_encryptable(rec))) {
if (umount(rec->mount_point) == 0) {
return FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION;
} else {
WARNING("Could not umount %s (%s) - allow continue unencrypted\n",
rec->mount_point, strerror(errno));
return FS_MGR_MNTALL_DEV_NOT_ENCRYPTED;
}
}
// Deal with file level encryption
if (rec->fs_mgr_flags & MF_FILEENCRYPTION) {
// Default or not yet initialized encryption requires no more work here
if (!e4crypt_non_default_key(rec->mount_point)) {
INFO("%s is default file encrypted\n", rec->mount_point);
return FS_MGR_MNTALL_DEV_DEFAULT_FILE_ENCRYPTED;
}
INFO("%s is non-default file encrypted\n", rec->mount_point);
// Uses non-default key, so must unmount and set up temp file system
if (umount(rec->mount_point)) {
ERROR("Failed to umount %s - rebooting\n", rec->mount_point);
return FS_MGR_MNTALL_FAIL;
}
if (fs_mgr_do_tmpfs_mount(rec->mount_point) != 0) {
ERROR("Failed to mount a tmpfs at %s\n", rec->mount_point);
return FS_MGR_MNTALL_FAIL;
}
// Mount data temporarily so we can access unencrypted dir
char tmp_mnt[PATH_MAX];
strlcpy(tmp_mnt, rec->mount_point, sizeof(tmp_mnt));
strlcat(tmp_mnt, "/tmp_mnt", sizeof(tmp_mnt));
if (mkdir(tmp_mnt, 0700)) {
ERROR("Failed to create temp mount point\n");
return FS_MGR_MNTALL_FAIL;
}
if (fs_mgr_do_mount(fstab, rec->mount_point,
rec->blk_device, tmp_mnt)) {
ERROR("Error temp mounting encrypted file system\n");
return FS_MGR_MNTALL_FAIL;
}
return FS_MGR_MNTALL_DEV_NON_DEFAULT_FILE_ENCRYPTED;
}
return FS_MGR_MNTALL_DEV_NOT_ENCRYPTED;
}
