diff options
Diffstat (limited to 'lib/utils_device_locking.h')
| -rw-r--r-- | lib/utils_device_locking.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/utils_device_locking.h b/lib/utils_device_locking.h new file mode 100644 index 0000000..3241d78 --- /dev/null +++ b/lib/utils_device_locking.h @@ -0,0 +1,37 @@ +/* + * Metadata on-disk locking for processes serialization + * + * Copyright (C) 2016-2019 Red Hat, Inc. All rights reserved. + * Copyright (C) 2016-2019 Ondrej Kozina + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef _CRYPTSETUP_UTILS_LOCKING_H +#define _CRYPTSETUP_UTILS_LOCKING_H + +struct crypt_device; +struct crypt_lock_handle; + +int device_locked_readonly(struct crypt_lock_handle *h); +int device_locked(struct crypt_lock_handle *h); + +struct crypt_lock_handle *device_read_lock_handle(struct crypt_device *cd, const char *device_path); +struct crypt_lock_handle *device_write_lock_handle(struct crypt_device *cd, const char *device_path); +void device_unlock_handle(struct crypt_device *cd, struct crypt_lock_handle *h); + +int device_locked_verify(struct crypt_device *cd, int fd, struct crypt_lock_handle *h); + +#endif |