From 2cb7e0aaedad73b076ea18c6900b0e86c5760d79 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 15:00:47 +0200 Subject: Adding upstream version 247.3. Signed-off-by: Daniel Baumann --- src/shared/loop-util.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 src/shared/loop-util.h (limited to 'src/shared/loop-util.h') diff --git a/src/shared/loop-util.h b/src/shared/loop-util.h new file mode 100644 index 0000000..9538dae --- /dev/null +++ b/src/shared/loop-util.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include "macro.h" + +typedef struct LoopDevice LoopDevice; + +/* Some helpers for setting up loopback block devices */ + +struct LoopDevice { + int fd; + int nr; + char *node; + bool relinquished; +}; + +int loop_device_make(int fd, int open_flags, uint64_t offset, uint64_t size, uint32_t loop_flags, LoopDevice **ret); +int loop_device_make_by_path(const char *path, int open_flags, uint32_t loop_flags, LoopDevice **ret); +int loop_device_open(const char *loop_path, int open_flags, LoopDevice **ret); + +LoopDevice* loop_device_unref(LoopDevice *d); +DEFINE_TRIVIAL_CLEANUP_FUNC(LoopDevice*, loop_device_unref); + +void loop_device_relinquish(LoopDevice *d); + +int loop_device_refresh_size(LoopDevice *d, uint64_t offset, uint64_t size); + +int loop_device_flock(LoopDevice *d, int operation); +int loop_device_sync(LoopDevice *d); -- cgit v1.2.3