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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <__config>
#include <cstdint>
#include <filesystem>
#include <system_error>
#include "file_descriptor.h"
#include "posix_compat.h"
#include "time_utils.h"
_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
error_code directory_entry::__do_refresh() noexcept {
__data_.__reset();
error_code failure_ec;
detail::StatT full_st;
file_status st = detail::posix_lstat(__p_, full_st, &failure_ec);
if (!status_known(st)) {
__data_.__reset();
return failure_ec;
}
if (!_VSTD_FS::exists(st) || !_VSTD_FS::is_symlink(st)) {
__data_.__cache_type_ = directory_entry::_RefreshNonSymlink;
__data_.__type_ = st.type();
__data_.__non_sym_perms_ = st.permissions();
} else { // we have a symlink
__data_.__sym_perms_ = st.permissions();
// Get the information about the linked entity.
// Ignore errors from stat, since we don't want errors regarding symlink
// resolution to be reported to the user.
error_code ignored_ec;
st = detail::posix_stat(__p_, full_st, &ignored_ec);
__data_.__type_ = st.type();
__data_.__non_sym_perms_ = st.permissions();
// If we failed to resolve the link, then only partially populate the
// cache.
if (!status_known(st)) {
__data_.__cache_type_ = directory_entry::_RefreshSymlinkUnresolved;
return error_code{};
}
// Otherwise, we resolved the link, potentially as not existing.
// That's OK.
__data_.__cache_type_ = directory_entry::_RefreshSymlink;
}
if (_VSTD_FS::is_regular_file(st))
__data_.__size_ = static_cast<uintmax_t>(full_st.st_size);
if (_VSTD_FS::exists(st)) {
__data_.__nlink_ = static_cast<uintmax_t>(full_st.st_nlink);
// Attempt to extract the mtime, and fail if it's not representable using
// file_time_type. For now we ignore the error, as we'll report it when
// the value is actually used.
error_code ignored_ec;
__data_.__write_time_ =
detail::__extract_last_write_time(__p_, full_st, &ignored_ec);
}
return failure_ec;
}
_LIBCPP_END_NAMESPACE_FILESYSTEM
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