src/dctv/fsutil.h

// Copyright (C) 2020 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include "dctv.h"
#include "unique_fd.h"

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#include <string_view>

namespace dctv {

UniqueFd xopen(const char* name,
               int flags,
               mode_t mode=0);

UniqueFd xopenat(int dirfd,
                 const char* name,
                 int flags,
                 mode_t mode=0);

void xwrite_all(int fd, const void* mem, size_t nbytes);
size_t xread_all(int fd, void* mem, size_t nbytes);

// Best-effort unlink for exception paths.
void safe_unlinkat(int dirfd, std::string_view name) noexcept;

void xtruncate(int fd, size_t nbytes);


}  // namespace dctv