libcamera v0.3.1+50-69a894c4
Supporting cameras in Linux since 2019
memfd.h
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1/* SPDX-License-Identifier: LGPL-2.1-or-later */
2/*
3 * Copyright (C) 2024, Ideas on Board Oy
4 *
5 * Anonymous file creation
6 */
7
8#pragma once
9
10#include <stddef.h>
11
14
15namespace libcamera {
16
17class MemFd
18{
19public:
20 enum class Seal {
21 None = 0,
22 Shrink = (1 << 0),
23 Grow = (1 << 1),
24 };
25
27
28 static UniqueFD create(const char *name, std::size_t size,
29 Seals seals = Seal::None);
30};
31
33
34} /* namespace libcamera */
Type-safe container for enum-based bitfields.
Definition: flags.h:16
Helper class to create anonymous files.
Definition: memfd.h:18
Seal
Seals for the MemFd::create() function.
Definition: memfd.h:20
@ None
No seals (used as default value)
static UniqueFD create(const char *name, std::size_t size, Seals seals=Seal::None)
Create an anonymous file.
Definition: memfd.cpp:84
unique_ptr-like wrapper for a file descriptor
Definition: unique_fd.h:18
Enum-based bit fields.
#define LIBCAMERA_FLAGS_ENABLE_OPERATORS(_enum)
Enable bitwise operations on the enum enumeration.
Top-level libcamera namespace.
Definition: backtrace.h:17
File descriptor wrapper that owns a file descriptor.