[llvm-commits] [llvm] r120792 - in /llvm/trunk/lib/Support: Unix/PathV2.inc Windows/PathV2.inc

[Michael J. Spencer]

Author: mspencer
Date: Thu Dec  2 23:58:41 2010
New Revision: 120792

URL: http://llvm.org/viewvc/llvm-project?rev=120792&view=rev
Log:
Support/FileSystem: Add create_hard_link implementation.

Modified:
    llvm/trunk/lib/Support/Unix/PathV2.inc
    llvm/trunk/lib/Support/Windows/PathV2.inc

Modified: llvm/trunk/lib/Support/Unix/PathV2.inc
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Unix/PathV2.inc?rev=120792&r1=120791&r2=120792&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Unix/PathV2.inc (original)
+++ llvm/trunk/lib/Support/Unix/PathV2.inc Thu Dec  2 23:58:41 2010
@@ -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);

Modified: llvm/trunk/lib/Support/Windows/PathV2.inc
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Windows/PathV2.inc?rev=120792&r1=120791&r2=120792&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Windows/PathV2.inc (original)
+++ llvm/trunk/lib/Support/Windows/PathV2.inc Thu Dec  2 23:58:41 2010
@@ -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;