| //===----------------------------------------------------------------------===// |
| // |
| // 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 (!filesystem::exists(st) || !filesystem::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 (filesystem::is_regular_file(st)) |
| __data_.__size_ = static_cast<uintmax_t>(full_st.st_size); |
| |
| if (filesystem::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 |