@@ -28,7 +28,7 @@ public:
bool isValid() const { return fd_ != nullptr; }
int fd() const { return fd_ ? fd_->fd() : -1; }
- FileDescriptor dup() const;
+ UniqueFD dup() const;
private:
class Descriptor
@@ -222,17 +222,23 @@ FileDescriptor &FileDescriptor::operator=(FileDescriptor &&other)
* \brief Duplicate a FileDescriptor
*
* Duplicating a FileDescriptor creates a duplicate of the wrapped file
- * descriptor and returns a new FileDescriptor instance that wraps the
- * duplicate. The fd() function of the original and duplicate instances will
- * return different values. The duplicate instance will not be affected by
- * destruction of the original instance or its copies.
+ * descriptor and returns a UniqueFD that owns the duplicate. The fd() function
+ * of the original and the get() function of the duplicate will return different
+ * values. The duplicate instance will not be affected by destruction of the
+ * original instance or its copies.
*
- * \return A new FileDescriptor instance wrapping a duplicate of the original
- * file descriptor
+ * \return A UniqueFD owning a duplicate of the original file descriptor
*/
-FileDescriptor FileDescriptor::dup() const
+UniqueFD FileDescriptor::dup() const
{
- return FileDescriptor(fd());
+ UniqueFD dupFd(::dup(fd()));
+ if (!dupFd.isValid()) {
+ int ret = -errno;
+ LOG(FileDescriptor, Error)
+ << "Failed to dup() fd: " << strerror(-ret);
+ }
+
+ return dupFd;
}
FileDescriptor::Descriptor::Descriptor(int fd, bool duplicate)