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1/* Copyright (c) Facebook, Inc. and its affiliates. (http://www.facebook.com) */
2#pragma once
3
4#include <sys/types.h>
5
6#include "globals.h"
7
8namespace py {
9
10class File {
11 public:
12 // Return 0. Return -errno on error.
13 static int close(int fd);
14
15 // Return 1 if fd is a tty. Return 0 if it is not. Return -errno on error.
16 static int isatty(int fd);
17
18 // Return 1 if fd is a directory. Return 0 if it is not. Return -errno on
19 // error.
20 static int isDirectory(int fd);
21
22 // Return 1 if fd is inheritable. Return 0 if it is not. Return -errno on
23 // error.
24 static int isInheritable(int fd);
25
26 // Return opened fd. Return -errno on error.
27 static int open(const char* path, int flags, int mode);
28
29 // Return number of bytes read. Return -errno on error.
30 static ssize_t read(int fd, void* buffer, size_t count);
31
32 // Return 0. Return -errno on error.
33 static int setNoInheritable(int fd);
34
35 // Return resulting offset location from start of file. Return -errno on
36 // error.
37 static int64_t seek(int fd, int64_t offset, int whence);
38
39 // Return file size according to fstat. Return -errno on error.
40 static int64_t size(int fd);
41
42 // Return 0. Return -errno on error.
43 static int truncate(int fd, int64_t size);
44
45 // Return number of bytes written. Return -errno on error.
46 static ssize_t write(int fd, const void* buffer, size_t size);
47
48 // TODO(T61930691): Remove these flags in favor of a simpler interface like a
49 // mode string
50
51 // This should be non-zero (O_BINARY) on NT.
52 static const word kBinaryFlag;
53
54 static const word kCreate;
55
56 // This should be O_CLOEXEC on posix and O_NOINHERIT on NT.
57 static const word kNoInheritFlag;
58
59 static const word kTruncate;
60
61 static const word kWriteOnly;
62
63 static const word kStderr;
64 static const word kStdin;
65 static const word kStdout;
66};
67
68} // namespace py