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desc
@@
1.1
log
@Initial revision
@
text
@// Filesystem declarations -*- C++ -*-
// Copyright (C) 2014-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// .
/** @@file include/bits/fs_fwd.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @@headername{filesystem}
*/
#ifndef _GLIBCXX_FS_FWD_H
#define _GLIBCXX_FS_FWD_H 1
#if __cplusplus >= 201703L
#include
#include
#include
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace filesystem
{
#if _GLIBCXX_USE_CXX11_ABI
inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
#endif
/**
* @@defgroup filesystem Filesystem
*
* Utilities for performing operations on file systems and their components,
* such as paths, regular files, and directories.
*
* @@{
*/
class file_status;
_GLIBCXX_BEGIN_NAMESPACE_CXX11
class path;
class filesystem_error;
class directory_entry;
class directory_iterator;
class recursive_directory_iterator;
_GLIBCXX_END_NAMESPACE_CXX11
struct space_info
{
uintmax_t capacity;
uintmax_t free;
uintmax_t available;
};
enum class file_type : signed char {
none = 0, not_found = -1, regular = 1, directory = 2, symlink = 3,
block = 4, character = 5, fifo = 6, socket = 7, unknown = 8
};
/// Bitmask type
enum class copy_options : unsigned short {
none = 0,
skip_existing = 1, overwrite_existing = 2, update_existing = 4,
recursive = 8,
copy_symlinks = 16, skip_symlinks = 32,
directories_only = 64, create_symlinks = 128, create_hard_links = 256
};
constexpr copy_options
operator&(copy_options __x, copy_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) & static_cast<__utype>(__y));
}
constexpr copy_options
operator|(copy_options __x, copy_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) | static_cast<__utype>(__y));
}
constexpr copy_options
operator^(copy_options __x, copy_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) ^ static_cast<__utype>(__y));
}
constexpr copy_options
operator~(copy_options __x) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(~static_cast<__utype>(__x));
}
inline copy_options&
operator&=(copy_options& __x, copy_options __y) noexcept
{ return __x = __x & __y; }
inline copy_options&
operator|=(copy_options& __x, copy_options __y) noexcept
{ return __x = __x | __y; }
inline copy_options&
operator^=(copy_options& __x, copy_options __y) noexcept
{ return __x = __x ^ __y; }
/// Bitmask type
enum class perms : unsigned {
none = 0,
owner_read = 0400,
owner_write = 0200,
owner_exec = 0100,
owner_all = 0700,
group_read = 040,
group_write = 020,
group_exec = 010,
group_all = 070,
others_read = 04,
others_write = 02,
others_exec = 01,
others_all = 07,
all = 0777,
set_uid = 04000,
set_gid = 02000,
sticky_bit = 01000,
mask = 07777,
unknown = 0xFFFF,
};
constexpr perms
operator&(perms __x, perms __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) & static_cast<__utype>(__y));
}
constexpr perms
operator|(perms __x, perms __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) | static_cast<__utype>(__y));
}
constexpr perms
operator^(perms __x, perms __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) ^ static_cast<__utype>(__y));
}
constexpr perms
operator~(perms __x) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(~static_cast<__utype>(__x));
}
inline perms&
operator&=(perms& __x, perms __y) noexcept
{ return __x = __x & __y; }
inline perms&
operator|=(perms& __x, perms __y) noexcept
{ return __x = __x | __y; }
inline perms&
operator^=(perms& __x, perms __y) noexcept
{ return __x = __x ^ __y; }
/// Bitmask type
enum class perm_options : unsigned {
replace = 0x1,
add = 0x2,
remove = 0x4,
nofollow = 0x8
};
constexpr perm_options
operator&(perm_options __x, perm_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) & static_cast<__utype>(__y));
}
constexpr perm_options
operator|(perm_options __x, perm_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) | static_cast<__utype>(__y));
}
constexpr perm_options
operator^(perm_options __x, perm_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) ^ static_cast<__utype>(__y));
}
constexpr perm_options
operator~(perm_options __x) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(~static_cast<__utype>(__x));
}
inline perm_options&
operator&=(perm_options& __x, perm_options __y) noexcept
{ return __x = __x & __y; }
inline perm_options&
operator|=(perm_options& __x, perm_options __y) noexcept
{ return __x = __x | __y; }
inline perm_options&
operator^=(perm_options& __x, perm_options __y) noexcept
{ return __x = __x ^ __y; }
// Bitmask type
enum class directory_options : unsigned char {
none = 0, follow_directory_symlink = 1, skip_permission_denied = 2
};
constexpr directory_options
operator&(directory_options __x, directory_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) & static_cast<__utype>(__y));
}
constexpr directory_options
operator|(directory_options __x, directory_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) | static_cast<__utype>(__y));
}
constexpr directory_options
operator^(directory_options __x, directory_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) ^ static_cast<__utype>(__y));
}
constexpr directory_options
operator~(directory_options __x) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(~static_cast<__utype>(__x));
}
inline directory_options&
operator&=(directory_options& __x, directory_options __y) noexcept
{ return __x = __x & __y; }
inline directory_options&
operator|=(directory_options& __x, directory_options __y) noexcept
{ return __x = __x | __y; }
inline directory_options&
operator^=(directory_options& __x, directory_options __y) noexcept
{ return __x = __x ^ __y; }
using file_time_type = std::chrono::system_clock::time_point;
// operational functions
void copy(const path& __from, const path& __to, copy_options __options);
void copy(const path& __from, const path& __to, copy_options __options,
error_code&);
bool copy_file(const path& __from, const path& __to, copy_options __option);
bool copy_file(const path& __from, const path& __to, copy_options __option,
error_code&);
path current_path();
bool exists(file_status) noexcept;
bool is_other(file_status) noexcept;
uintmax_t file_size(const path&);
uintmax_t file_size(const path&, error_code&) noexcept;
uintmax_t hard_link_count(const path&);
uintmax_t hard_link_count(const path&, error_code&) noexcept;
file_time_type last_write_time(const path&);
file_time_type last_write_time(const path&, error_code&) noexcept;
void permissions(const path&, perms, perm_options, error_code&) noexcept;
path proximate(const path& __p, const path& __base, error_code& __ec);
path proximate(const path& __p, const path& __base, error_code& __ec);
path relative(const path& __p, const path& __base, error_code& __ec);
file_status status(const path&);
file_status status(const path&, error_code&) noexcept;
bool status_known(file_status) noexcept;
file_status symlink_status(const path&);
file_status symlink_status(const path&, error_code&) noexcept;
bool is_regular_file(file_status) noexcept;
bool is_symlink(file_status) noexcept;
// @@} group filesystem
} // namespace filesystem
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++17
#endif // _GLIBCXX_FS_FWD_H
@
1.1.1.1
log
@import GCC 8.3. it includes these new features:
- many optimisations improved: inter-procedural, profile-directed,
LTO, loops including user-controllable unroll support, and more.
- columns numbers added to line numbers in dwarf
- gcov extended significantly
- many sanitizer updates
- many new warning messages
- many better hints and more useful error messages
- minor ABI changes on x86-64 libstdc++, and some c++17 modes
- draft c++2a features
- better c++17 experimental support
- Armv8.4-A supported, better 8.2-A and 8.3-A support, including
32 bit arm port. cortex a-55, a-75 and a-55.a-75 combo support.
- in the GCC bugzilla, 8.1 shows 1149 bugs fixed, 8.2 shows 100, and
8.3 shows 158.
@
text
@@
1.1.1.2
log
@initial import of GCC 9.3.0. changes include:
- live patching support
- shell completion help
- generally better diagnostic output (less verbose/more useful)
- diagnostics and optimisation choices can be emitted in json
- asan memory usage reduction
- many general, and specific to switch, inter-procedure,
profile and link-time optimisations. from the release notes:
"Overall compile time of Firefox 66 and LibreOffice 6.2.3 on
an 8-core machine was reduced by about 5% compared to GCC 8.3"
- OpenMP 5.0 support
- better spell-guesser
- partial experimental support for c2x and c++2a
- c++17 is no longer experimental
- arm AAPCS GCC 6-8 structure passing bug fixed, may cause
incompatibility (restored compat with GCC 5 and earlier.)
- openrisc support
@
text
@d3 1
a3 1
// Copyright (C) 2014-2019 Free Software Foundation, Inc.
d297 1
a297 43
struct __file_clock
{
using duration = chrono::nanoseconds;
using rep = duration::rep;
using period = duration::period;
using time_point = chrono::time_point<__file_clock>;
static constexpr bool is_steady = false;
static time_point
now() noexcept
{ return _S_from_sys(chrono::system_clock::now()); }
private:
using __sys_clock = chrono::system_clock;
// This clock's (unspecified) epoch is 2174-01-01 00:00:00 UTC.
// A signed 64-bit duration with nanosecond resolution gives roughly
// +/- 292 years, which covers the 1901-2446 date range for ext4.
static constexpr chrono::seconds _S_epoch_diff{6437664000};
protected:
// For internal use only
template
static
chrono::time_point<__file_clock, _Dur>
_S_from_sys(const chrono::time_point<__sys_clock, _Dur>& __t) noexcept
{
using __file_time = chrono::time_point<__file_clock, _Dur>;
return __file_time{__t.time_since_epoch()} - _S_epoch_diff;
}
// For internal use only
template
static
chrono::time_point<__sys_clock, _Dur>
_S_to_sys(const chrono::time_point<__file_clock, _Dur>& __t) noexcept
{
using __sys_time = chrono::time_point<__sys_clock, _Dur>;
return __sys_time{__t.time_since_epoch()} + _S_epoch_diff;
}
};
using file_time_type = __file_clock::time_point;
@
1.1.1.3
log
@initial import of GCC 10.3.0. main changes include:
caveats:
- ABI issue between c++14 and c++17 fixed
- profile mode is removed from libstdc++
- -fno-common is now the default
new features:
- new flags -fallocation-dce, -fprofile-partial-training,
-fprofile-reproducible, -fprofile-prefix-path, and -fanalyzer
- many new compile and link time optimisations
- enhanced drive optimisations
- openacc 2.6 support
- openmp 5.0 features
- new warnings: -Wstring-compare and -Wzero-length-bounds
- extended warnings: -Warray-bounds, -Wformat-overflow,
-Wrestrict, -Wreturn-local-addr, -Wstringop-overflow,
-Warith-conversion, -Wmismatched-tags, and -Wredundant-tags
- some likely C2X features implemented
- more C++20 implemented
- many new arm & intel CPUs known
hundreds of reported bugs are fixed. full list of changes
can be found at:
https://gcc.gnu.org/gcc-10/changes.html
@
text
@d3 1
a3 1
// Copyright (C) 2014-2020 Free Software Foundation, Inc.
a42 5
/** @@addtogroup filesystem
* @@{
*/
/// ISO C++ 2017 namespace for File System library
d49 8
a71 4
#if __cpp_impl_three_way_comparison >= 201907L
friend bool operator==(const space_info&, const space_info&) = default;
#endif
d297 42
d382 1
d384 1
a384 1
// @@}
d387 1
d389 1
@
1.1.1.4
log
@initial import of GCC 10.4.0 sources.
mostly a large list of PRs fixed (210 total), plus one x86-64
specific change related to MMX and 64 bit integer return.
https://gcc.gnu.org/gcc-10/changes.html links to the full list
of PRs fixed.
@
text
@d342 1
a342 1
/// @@}
@
1.1.1.5
log
@initial import of GCC 12.3.0.
major changes in GCC 11 included:
- The default mode for C++ is now -std=gnu++17 instead of -std=gnu++14.
- When building GCC itself, the host compiler must now support C++11,
rather than C++98.
- Some short options of the gcov tool have been renamed: -i to -j and
-j to -H.
- ThreadSanitizer improvements.
- Introduce Hardware-assisted AddressSanitizer support.
- For targets that produce DWARF debugging information GCC now defaults
to DWARF version 5. This can produce up to 25% more compact debug
information compared to earlier versions.
- Many optimisations.
- The existing malloc attribute has been extended so that it can be
used to identify allocator/deallocator API pairs. A pair of new
-Wmismatched-dealloc and -Wmismatched-new-delete warnings are added.
- Other new warnings:
-Wsizeof-array-div, enabled by -Wall, warns about divisions of two
sizeof operators when the first one is applied to an array and the
divisor does not equal the size of the array element.
-Wstringop-overread, enabled by default, warns about calls to string
functions reading past the end of the arrays passed to them as
arguments.
-Wtsan, enabled by default, warns about unsupported features in
ThreadSanitizer (currently std::atomic_thread_fence).
- Enchanced warnings:
-Wfree-nonheap-object detects many more instances of calls to
deallocation functions with pointers not returned from a dynamic
memory allocation function.
-Wmaybe-uninitialized diagnoses passing pointers or references to
uninitialized memory to functions taking const-qualified arguments.
-Wuninitialized detects reads from uninitialized dynamically
allocated memory.
-Warray-parameter warns about functions with inconsistent array forms.
-Wvla-parameter warns about functions with inconsistent VLA forms.
- Several new features from the upcoming C2X revision of the ISO C
standard are supported with -std=c2x and -std=gnu2x.
- Several C++20 features have been implemented.
- The C++ front end has experimental support for some of the upcoming
C++23 draft.
- Several new C++ warnings.
- Enhanced Arm, AArch64, x86, and RISC-V CPU support.
- The implementation of how program state is tracked within
-fanalyzer has been completely rewritten with many enhancements.
see https://gcc.gnu.org/gcc-11/changes.html for a full list.
major changes in GCC 12 include:
- An ABI incompatibility between C and C++ when passing or returning
by value certain aggregates containing zero width bit-fields has
been discovered on various targets. x86-64, ARM and AArch64
will always ignore them (so there is a C ABI incompatibility
between GCC 11 and earlier with GCC 12 or later), PowerPC64 ELFv2
always take them into account (so there is a C++ ABI
incompatibility, GCC 4.4 and earlier compatible with GCC 12 or
later, incompatible with GCC 4.5 through GCC 11). RISC-V has
changed the handling of these already starting with GCC 10. As
the ABI requires, MIPS takes them into account handling function
return values so there is a C++ ABI incompatibility with GCC 4.5
through 11.
- STABS: Support for emitting the STABS debugging format is
deprecated and will be removed in the next release. All ports now
default to emit DWARF (version 2 or later) debugging info or are
obsoleted.
- Vectorization is enabled at -O2 which is now equivalent to the
original -O2 -ftree-vectorize -fvect-cost-model=very-cheap.
- GCC now supports the ShadowCallStack sanitizer.
- Support for __builtin_shufflevector compatible with the clang
language extension was added.
- Support for attribute unavailable was added.
- Support for __builtin_dynamic_object_size compatible with the
clang language extension was added.
- New warnings:
-Wbidi-chars warns about potentially misleading UTF-8
bidirectional control characters.
-Warray-compare warns about comparisons between two operands of
array type.
- Some new features from the upcoming C2X revision of the ISO C
standard are supported with -std=c2x and -std=gnu2x.
- Several C++23 features have been implemented.
- Many C++ enhancements across warnings and -f options.
see https://gcc.gnu.org/gcc-12/changes.html for a full list.
@
text
@d3 1
a3 1
// Copyright (C) 2014-2022 Free Software Foundation, Inc.
d37 1
a37 1
#include
d43 4
a50 1
/// @@cond undocumented
a51 1
/// @@endcond
a53 3
/** @@addtogroup filesystem
* @@{
*/
a63 1
/// Information about free space on a disk
a74 1
/// Enumerated type representing the type of a file
d80 1
a80 1
/// Bitmask type controlling effects of `filesystem::copy`
a88 2
/// @@{
/// @@relates copy_options
a130 1
/// @@}
d133 1
a133 1
/// Bitmask type representing file access permissions
a155 2
/// @@{
/// @@relates perms
a197 1
/// @@}
d199 1
a199 1
/// Bitmask type controlling changes to permissions
a206 2
/// @@{
/// @@relates perm_options
a248 1
/// @@}
d250 1
a250 1
/// Bitmask type controlling directory iteration
a254 2
/// @@{
/// @@relates directory_options
a296 1
/// @@}
a297 1
/// The type used for file timestamps
d341 1
a341 4
bool remove(const path&, error_code&) noexcept;
uintmax_t remove_all(const path&);
uintmax_t remove_all(const path&, error_code&);
a342 1
} // namespace filesystem
@
1.1.1.6
log
@initial import of GCC 14.3.0.
major changes in GCC 13:
- improved sanitizer
- zstd debug info compression
- LTO improvements
- SARIF based diagnostic support
- new warnings: -Wxor-used-as-pow, -Wenum-int-mismatch, -Wself-move,
-Wdangling-reference
- many new -Wanalyzer* specific warnings
- enhanced warnings: -Wpessimizing-move, -Wredundant-move
- new attributes to mark file descriptors, c++23 "assume"
- several C23 features added
- several C++23 features added
- many new features for Arm, x86, RISC-V
major changes in GCC 14:
- more strict C99 or newer support
- ia64* marked deprecated (but seemingly still in GCC 15.)
- several new hardening features
- support for "hardbool", which can have user supplied values of true/false
- explicit support for stack scrubbing upon function exit
- better auto-vectorisation support
- added clang-compatible __has_feature and __has_extension
- more C23, including -std=c23
- several C++26 features added
- better diagnostics in C++ templates
- new warnings: -Wnrvo, Welaborated-enum-base
- many new features for Arm, x86, RISC-V
- possible ABI breaking change for SPARC64 and small structures with arrays
of floats.
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1.1.1.1.4.1
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@file fs_fwd.h was added on branch phil-wifi on 2020-04-13 07:58:35 +0000
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@d1 348
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1.1.1.1.4.2
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@Mostly merge changes from HEAD upto 20200411
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// Filesystem declarations -*- C++ -*-
// Copyright (C) 2014-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// .
/** @@file include/bits/fs_fwd.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @@headername{filesystem}
*/
#ifndef _GLIBCXX_FS_FWD_H
#define _GLIBCXX_FS_FWD_H 1
#if __cplusplus >= 201703L
#include
#include
#include
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace filesystem
{
#if _GLIBCXX_USE_CXX11_ABI
inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
#endif
/**
* @@defgroup filesystem Filesystem
*
* Utilities for performing operations on file systems and their components,
* such as paths, regular files, and directories.
*
* @@{
*/
class file_status;
_GLIBCXX_BEGIN_NAMESPACE_CXX11
class path;
class filesystem_error;
class directory_entry;
class directory_iterator;
class recursive_directory_iterator;
_GLIBCXX_END_NAMESPACE_CXX11
struct space_info
{
uintmax_t capacity;
uintmax_t free;
uintmax_t available;
};
enum class file_type : signed char {
none = 0, not_found = -1, regular = 1, directory = 2, symlink = 3,
block = 4, character = 5, fifo = 6, socket = 7, unknown = 8
};
/// Bitmask type
enum class copy_options : unsigned short {
none = 0,
skip_existing = 1, overwrite_existing = 2, update_existing = 4,
recursive = 8,
copy_symlinks = 16, skip_symlinks = 32,
directories_only = 64, create_symlinks = 128, create_hard_links = 256
};
constexpr copy_options
operator&(copy_options __x, copy_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) & static_cast<__utype>(__y));
}
constexpr copy_options
operator|(copy_options __x, copy_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) | static_cast<__utype>(__y));
}
constexpr copy_options
operator^(copy_options __x, copy_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) ^ static_cast<__utype>(__y));
}
constexpr copy_options
operator~(copy_options __x) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(~static_cast<__utype>(__x));
}
inline copy_options&
operator&=(copy_options& __x, copy_options __y) noexcept
{ return __x = __x & __y; }
inline copy_options&
operator|=(copy_options& __x, copy_options __y) noexcept
{ return __x = __x | __y; }
inline copy_options&
operator^=(copy_options& __x, copy_options __y) noexcept
{ return __x = __x ^ __y; }
/// Bitmask type
enum class perms : unsigned {
none = 0,
owner_read = 0400,
owner_write = 0200,
owner_exec = 0100,
owner_all = 0700,
group_read = 040,
group_write = 020,
group_exec = 010,
group_all = 070,
others_read = 04,
others_write = 02,
others_exec = 01,
others_all = 07,
all = 0777,
set_uid = 04000,
set_gid = 02000,
sticky_bit = 01000,
mask = 07777,
unknown = 0xFFFF,
};
constexpr perms
operator&(perms __x, perms __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) & static_cast<__utype>(__y));
}
constexpr perms
operator|(perms __x, perms __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) | static_cast<__utype>(__y));
}
constexpr perms
operator^(perms __x, perms __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) ^ static_cast<__utype>(__y));
}
constexpr perms
operator~(perms __x) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(~static_cast<__utype>(__x));
}
inline perms&
operator&=(perms& __x, perms __y) noexcept
{ return __x = __x & __y; }
inline perms&
operator|=(perms& __x, perms __y) noexcept
{ return __x = __x | __y; }
inline perms&
operator^=(perms& __x, perms __y) noexcept
{ return __x = __x ^ __y; }
/// Bitmask type
enum class perm_options : unsigned {
replace = 0x1,
add = 0x2,
remove = 0x4,
nofollow = 0x8
};
constexpr perm_options
operator&(perm_options __x, perm_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) & static_cast<__utype>(__y));
}
constexpr perm_options
operator|(perm_options __x, perm_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) | static_cast<__utype>(__y));
}
constexpr perm_options
operator^(perm_options __x, perm_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) ^ static_cast<__utype>(__y));
}
constexpr perm_options
operator~(perm_options __x) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(~static_cast<__utype>(__x));
}
inline perm_options&
operator&=(perm_options& __x, perm_options __y) noexcept
{ return __x = __x & __y; }
inline perm_options&
operator|=(perm_options& __x, perm_options __y) noexcept
{ return __x = __x | __y; }
inline perm_options&
operator^=(perm_options& __x, perm_options __y) noexcept
{ return __x = __x ^ __y; }
// Bitmask type
enum class directory_options : unsigned char {
none = 0, follow_directory_symlink = 1, skip_permission_denied = 2
};
constexpr directory_options
operator&(directory_options __x, directory_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) & static_cast<__utype>(__y));
}
constexpr directory_options
operator|(directory_options __x, directory_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) | static_cast<__utype>(__y));
}
constexpr directory_options
operator^(directory_options __x, directory_options __y) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(
static_cast<__utype>(__x) ^ static_cast<__utype>(__y));
}
constexpr directory_options
operator~(directory_options __x) noexcept
{
using __utype = typename std::underlying_type::type;
return static_cast(~static_cast<__utype>(__x));
}
inline directory_options&
operator&=(directory_options& __x, directory_options __y) noexcept
{ return __x = __x & __y; }
inline directory_options&
operator|=(directory_options& __x, directory_options __y) noexcept
{ return __x = __x | __y; }
inline directory_options&
operator^=(directory_options& __x, directory_options __y) noexcept
{ return __x = __x ^ __y; }
using file_time_type = std::chrono::system_clock::time_point;
// operational functions
void copy(const path& __from, const path& __to, copy_options __options);
void copy(const path& __from, const path& __to, copy_options __options,
error_code&);
bool copy_file(const path& __from, const path& __to, copy_options __option);
bool copy_file(const path& __from, const path& __to, copy_options __option,
error_code&);
path current_path();
bool exists(file_status) noexcept;
bool is_other(file_status) noexcept;
uintmax_t file_size(const path&);
uintmax_t file_size(const path&, error_code&) noexcept;
uintmax_t hard_link_count(const path&);
uintmax_t hard_link_count(const path&, error_code&) noexcept;
file_time_type last_write_time(const path&);
file_time_type last_write_time(const path&, error_code&) noexcept;
void permissions(const path&, perms, perm_options, error_code&) noexcept;
path proximate(const path& __p, const path& __base, error_code& __ec);
path proximate(const path& __p, const path& __base, error_code& __ec);
path relative(const path& __p, const path& __base, error_code& __ec);
file_status status(const path&);
file_status status(const path&, error_code&) noexcept;
bool status_known(file_status) noexcept;
file_status symlink_status(const path&);
file_status symlink_status(const path&, error_code&) noexcept;
bool is_regular_file(file_status) noexcept;
bool is_symlink(file_status) noexcept;
// @@} group filesystem
} // namespace filesystem
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++17
#endif // _GLIBCXX_FS_FWD_H
@