[io_engine] Add exclusive flag to io_engine

2016-06-07 13:45:27 +01:00
parent df9f4d479d
commit 07f44e9c77
3 changed files with 13 additions and 7 deletions
--- a/block-cache/io_engine.cc
+++ b/block-cache/io_engine.cc
@ -75,9 +75,11 @@ aio_engine::~aio_engine()
 }

 aio_engine::handle
-aio_engine::open_file(std::string const &path, mode m)
+aio_engine::open_file(std::string const &path, mode m, sharing s)
 {
 	int flags = (m == READ_ONLY) ? O_RDONLY : O_RDWR;
+	if (s == EXCLUSIVE)
+		flags |= O_EXCL;
 	int fd = ::open(path.c_str(), O_DIRECT | flags);
 	if (fd < 0) {
 		ostringstream out;