Support/FileSystem: Add create_hard_link implementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120792 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Unix/PathV2.inc b/lib/Support/Unix/PathV2.inc
index fc0d4a0..2bde780 100644
--- a/lib/Support/Unix/PathV2.inc
+++ b/lib/Support/Unix/PathV2.inc
@@ -160,6 +160,19 @@
return make_error_code(errc::success);
}
+error_code create_hard_link(const Twine &to, const Twine &from) {
+ // Get arguments.
+ SmallString<128> from_storage;
+ SmallString<128> to_storage;
+ StringRef f = from.toNullTerminatedStringRef(from_storage);
+ StringRef t = to.toNullTerminatedStringRef(to_storage);
+
+ if (::link(t.begin(), f.begin()) == -1)
+ return error_code(errno, system_category());
+
+ return make_error_code(errc::success);
+}
+
error_code exists(const Twine &path, bool &result) {
SmallString<128> path_storage;
StringRef p = path.toNullTerminatedStringRef(path_storage);
diff --git a/lib/Support/Windows/PathV2.inc b/lib/Support/Windows/PathV2.inc
index 4adbda3..d374dcc 100644
--- a/lib/Support/Windows/PathV2.inc
+++ b/lib/Support/Windows/PathV2.inc
@@ -201,6 +201,25 @@
return make_error_code(errc::success);
}
+error_code create_hard_link(const Twine &to, const Twine &from) {
+ // Get arguments.
+ SmallString<128> from_storage;
+ SmallString<128> to_storage;
+ StringRef f = from.toStringRef(from_storage);
+ StringRef t = to.toStringRef(to_storage);
+
+ // Convert to utf-16.
+ SmallVector<wchar_t, 128> wide_from;
+ SmallVector<wchar_t, 128> wide_to;
+ if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
+ if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
+
+ if (!::CreateHardLinkW(wide_from.begin(), wide_to.begin(), NULL))
+ return make_error_code(windows_error(::GetLastError()));
+
+ return make_error_code(errc::success);
+}
+
error_code exists(const Twine &path, bool &result) {
SmallString<128> path_storage;
SmallVector<wchar_t, 128> path_utf16;