1 // Copyright 2012 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // This file contains utility functions for dealing with the local
6 // filesystem.
7 
8 #ifndef PARTITION_ALLOC_PARTITION_ALLOC_BASE_FILES_FILE_UTIL_H_
9 #define PARTITION_ALLOC_PARTITION_ALLOC_BASE_FILES_FILE_UTIL_H_
10 
11 #include <cstddef>
12 #include <cstdint>
13 #include <cstdio>
14 
15 #include "build/build_config.h"
16 #include "partition_alloc/partition_alloc_base/component_export.h"
17 
18 #if BUILDFLAG(IS_POSIX) || BUILDFLAG(IS_FUCHSIA)
19 #include <sys/stat.h>
20 #include <unistd.h>
21 #endif
22 
23 namespace partition_alloc::internal::base {
24 
25 #if BUILDFLAG(IS_POSIX) || BUILDFLAG(IS_FUCHSIA)
26 
27 // Read exactly |bytes| bytes from file descriptor |fd|, storing the result
28 // in |buffer|. This function is protected against EINTR and partial reads.
29 // Returns true iff |bytes| bytes have been successfully read from |fd|.
30 PA_COMPONENT_EXPORT(PARTITION_ALLOC_BASE)
31 bool ReadFromFD(int fd, char* buffer, size_t bytes);
32 
33 #endif  // BUILDFLAG(IS_POSIX) || BUILDFLAG(IS_FUCHSIA)
34 
35 }  // namespace partition_alloc::internal::base
36 
37 #endif  // PARTITION_ALLOC_PARTITION_ALLOC_BASE_FILES_FILE_UTIL_H_
38