Add support for getting file system permissions and implement sys::fs::permissions to set them.

Patch by James Henderson.

llvm-svn: 297617

1 files changed, 15 insertions, 6 deletions

diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc
index cdc692b8f1f..b2669d51eb8 100644
--- a/llvm/lib/Support/Unix/Path.inc
+++ b/llvm/lib/Support/Unix/Path.inc
@@ -568,12 +568,21 @@ std::error_code status(const Twine &Path, file_status &Result, bool Follow) {
 std::error_code status(int FD, file_status &Result) {
   struct stat Status;
   int StatRet = ::fstat(FD, &Status);
-  return fillStatus(StatRet, Status, Result);
-}
-
-std::error_code setLastModificationAndAccessTime(int FD, TimePoint<> Time) {
-#if defined(HAVE_FUTIMENS)
-  timespec Times[2];
+  return fillStatus(StatRet, Status, Result);

+}

+

+std::error_code setPermissions(const Twine &Path, perms Permissions) {

+  SmallString<128> PathStorage;

+  StringRef P = Path.toNullTerminatedStringRef(PathStorage);

+

+  if (::chmod(P.begin(), Permissions))

+    return std::error_code(errno, std::generic_category());

+  return std::error_code();

+}

+

+std::error_code setLastModificationAndAccessTime(int FD, TimePoint<> Time) {

+#if defined(HAVE_FUTIMENS)

+  timespec Times[2];

   Times[0] = Times[1] = sys::toTimeSpec(Time);
   if (::futimens(FD, Times))
     return std::error_code(errno, std::generic_category());