api-html/memfd_8h_source.html

 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 /*
  * Copyright (C) 2024, Ideas on Board Oy
  *
  * Anonymous file creation
  */

 #pragma once

 #include <stddef.h>

 #include <libcamera/base/flags.h>
 #include <libcamera/base/unique_fd.h>

 namespace libcamera {

 class MemFd
 {
 public:
     enum class Seal {
         None = 0,
         Shrink = (1 << 0),
         Grow = (1 << 1),
     };

     using Seals = Flags<Seal>;

     static UniqueFD create(const char *name, std::size_t size,
                    Seals seals = Seal::None);
 };

 LIBCAMERA_FLAGS_ENABLE_OPERATORS(MemFd::Seal)

 } /* namespace libcamera */
libcamera::MemFd::Seal
Seal
Seals for the MemFd::create() function.
Definition: memfd.h:20

unique_fd.h
File descriptor wrapper that owns a file descriptor.

libcamera
Top-level libcamera namespace.
Definition: backtrace.h:17

libcamera::MemFd::create
static UniqueFD create(const char *name, std::size_t size, Seals seals=Seal::None)
Create an anonymous file.
Definition: memfd.cpp:84

libcamera::UniqueFD
unique_ptr-like wrapper for a file descriptor
Definition: unique_fd.h:17

LIBCAMERA_FLAGS_ENABLE_OPERATORS
#define LIBCAMERA_FLAGS_ENABLE_OPERATORS(_enum)
Enable bitwise operations on the enum enumeration.

flags.h
Enum-based bit fields.

libcamera::Flags
Type-safe container for enum-based bitfields.
Definition: flags.h:15

libcamera::MemFd
Helper class to create anonymous files.
Definition: memfd.h:17