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Support/FileSystem: Add create_hard_link implementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120792 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -160,6 +160,19 @@ error_code create_directory(const Twine &path, bool &existed) {
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return make_error_code(errc::success);
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}
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error_code create_hard_link(const Twine &to, const Twine &from) {
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// Get arguments.
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SmallString<128> from_storage;
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SmallString<128> to_storage;
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StringRef f = from.toNullTerminatedStringRef(from_storage);
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StringRef t = to.toNullTerminatedStringRef(to_storage);
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if (::link(t.begin(), f.begin()) == -1)
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return error_code(errno, system_category());
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return make_error_code(errc::success);
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}
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error_code exists(const Twine &path, bool &result) {
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SmallString<128> path_storage;
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StringRef p = path.toNullTerminatedStringRef(path_storage);
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@ -201,6 +201,25 @@ error_code create_directory(const Twine &path, bool &existed) {
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return make_error_code(errc::success);
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}
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error_code create_hard_link(const Twine &to, const Twine &from) {
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// Get arguments.
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SmallString<128> from_storage;
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SmallString<128> to_storage;
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StringRef f = from.toStringRef(from_storage);
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StringRef t = to.toStringRef(to_storage);
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// Convert to utf-16.
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SmallVector<wchar_t, 128> wide_from;
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SmallVector<wchar_t, 128> wide_to;
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if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
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if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
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if (!::CreateHardLinkW(wide_from.begin(), wide_to.begin(), NULL))
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return make_error_code(windows_error(::GetLastError()));
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return make_error_code(errc::success);
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}
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error_code exists(const Twine &path, bool &result) {
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SmallString<128> path_storage;
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SmallVector<wchar_t, 128> path_utf16;
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