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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 17:44:12 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 17:44:12 +0000 |
| commit | 1be69c2c660b70ac2f4de2a5326e27e3e60eb82d (patch) | |
| tree | bb299ab6f411f4fccd735907035de710e4ec6abc /lib/utils_device_locking.h | |
| parent | Initial commit. (diff) | |
| download | cryptsetup-1be69c2c660b70ac2f4de2a5326e27e3e60eb82d.tar.xz cryptsetup-1be69c2c660b70ac2f4de2a5326e27e3e60eb82d.zip | |
Adding upstream version 2:2.3.7.upstream/2%2.3.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/utils_device_locking.h')
| -rw-r--r-- | lib/utils_device_locking.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/utils_device_locking.h b/lib/utils_device_locking.h new file mode 100644 index 0000000..d3b55a0 --- /dev/null +++ b/lib/utils_device_locking.h @@ -0,0 +1,49 @@ +/* + * Metadata on-disk locking for processes serialization + * + * Copyright (C) 2016-2021 Red Hat, Inc. All rights reserved. + * Copyright (C) 2016-2021 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 + +#include <stdbool.h> + +struct crypt_device; +struct crypt_lock_handle; +struct device; + +int device_locked_readonly(struct crypt_lock_handle *h); +int device_locked(struct crypt_lock_handle *h); + +int device_read_lock_internal(struct crypt_device *cd, struct device *device); +int device_write_lock_internal(struct crypt_device *cd, struct device *device); +void device_unlock_internal(struct crypt_device *cd, struct device *device); + +int device_locked_verify(struct crypt_device *cd, int fd, struct crypt_lock_handle *h); + +int crypt_read_lock(struct crypt_device *cd, const char *name, bool blocking, struct crypt_lock_handle **lock); +int crypt_write_lock(struct crypt_device *cd, const char *name, bool blocking, struct crypt_lock_handle **lock); +void crypt_unlock_internal(struct crypt_device *cd, struct crypt_lock_handle *h); + + +/* Used only in device internal allocation */ +void device_set_lock_handle(struct device *device, struct crypt_lock_handle *h); +struct crypt_lock_handle *device_get_lock_handle(struct device *device); + +#endif |