RESTinio

sendfile_defs_posix.hpp
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1/*
2 restinio
3*/
4
11#pragma once
12
13#include <sys/types.h>
14#include <sys/stat.h>
15#include <fcntl.h>
16
17#include <iostream>
18
19 namespace restinio
20{
21
22#if defined( __FreeBSD__ )
23 #define RESTINIO_FREEBSD_TARGET
24#elif defined(__APPLE__) && defined( __MACH__ )
25 #define RESTINIO_MACOS_TARGET
26#endif
27
31 using file_descriptor_t = int;
32 using file_offset_t = std::int64_t;
33 using file_size_t = std::uint64_t;
35
43
45 constexpr file_descriptor_t null_file_descriptor(){ return -1; }
46
48 inline file_descriptor_t
49 open_file( const char * file_path)
50{
51#if defined( RESTINIO_FREEBSD_TARGET ) || defined( RESTINIO_MACOS_TARGET )
52 file_descriptor_t file_descriptor = ::open( file_path, O_RDONLY );
53#else
54 file_descriptor_t file_descriptor = ::open( file_path, O_RDONLY | O_LARGEFILE );
55#endif
56 if( null_file_descriptor() == file_descriptor )
57 {
58 throw exception_t{
59 fmt::format( "unable to openfile '{}': {}", file_path, strerror( errno ) ) };
60 }
61 return file_descriptor;
62}
63
65 template < typename META >
66META
67 get_file_meta( file_descriptor_t fd )
68{
69 if( null_file_descriptor() == fd )
70 {
71 throw exception_t{ "invalid file descriptor" };
72 }
73
74#if defined( RESTINIO_FREEBSD_TARGET ) || defined( RESTINIO_MACOS_TARGET )
75 struct stat file_stat;
76
77 const auto fstat_rc = ::fstat( fd, &file_stat );
78#else
79 struct stat64 file_stat;
80
81 const auto fstat_rc = fstat64( fd, &file_stat );
82#endif
83
84 if( 0 != fstat_rc )
85 {
86 throw exception_t{
87 fmt::format( "unable to get file stat : {}", strerror( errno ) ) };
88 }
89
90 const std::chrono::system_clock::time_point
91 last_modified{
92#if defined( RESTINIO_MACOS_TARGET )
93 std::chrono::seconds( file_stat.st_mtimespec.tv_sec ) +
94 std::chrono::microseconds( file_stat.st_mtimespec.tv_nsec / 1000 )
95#else
96 std::chrono::seconds( file_stat.st_mtim.tv_sec ) +
97 std::chrono::microseconds( file_stat.st_mtim.tv_nsec / 1000 )
98#endif
99 };
100
101 return META{ static_cast< file_size_t >( file_stat.st_size ), last_modified };
102}
103
105 inline void
106 close_file( file_descriptor_t fd )
107{
108 ::close( fd );
109}
111
112} /* namespace restinio */
restinio
Definition: asio_include.hpp:21
restinio::null_file_descriptor
constexpr file_descriptor_t null_file_descriptor()
Get file descriptor which stands for null.
Definition: sendfile_defs_default.hpp:36
restinio::file_size_t
std::uint64_t file_size_t
Definition: sendfile_defs_default.hpp:23
restinio::close_file
void close_file(file_descriptor_t fd)
Close file by its descriptor.
Definition: sendfile_defs_default.hpp:89
restinio::file_offset_t
std::int64_t file_offset_t
Definition: sendfile_defs_default.hpp:22
restinio::file_descriptor_t
std::FILE * file_descriptor_t
Definition: sendfile_defs_default.hpp:21
restinio::open_file
file_descriptor_t open_file(const char *file_path)
Open file.
Definition: sendfile_defs_default.hpp:40
restinio::get_file_meta
META get_file_meta(file_descriptor_t fd)
Get file size.
Definition: sendfile_defs_default.hpp:55