[llvm] r311567 - bpf: close the file descriptor after probe inside getHostCPUNameForBPF

[Yonghong Song via llvm-commits]

Author: yhs
Date: Wed Aug 23 09:24:31 2017
New Revision: 311567

URL: http://llvm.org/viewvc/llvm-project?rev=311567&view=rev
Log:
bpf: close the file descriptor after probe inside getHostCPUNameForBPF

Signed-off-by: Yonghong Song <yhs at fb.com>

Modified:
    llvm/trunk/lib/Support/Host.cpp

Modified: llvm/trunk/lib/Support/Host.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Host.cpp?rev=311567&r1=311566&r2=311567&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Host.cpp (original)
+++ llvm/trunk/lib/Support/Host.cpp Wed Aug 23 09:24:31 2017
@@ -300,7 +300,11 @@ StringRef sys::detail::getHostCPUNameFor
   attr.license = (uint64_t)"DUMMY";
 
   int fd = syscall(321 /* __NR_bpf */, 5 /* BPF_PROG_LOAD */, &attr, sizeof(attr));
-  return (fd > 0) ? "v2" : "v1";
+  if (fd >= 0) {
+    close(fd);
+    return "v2";
+  }
+  return "v1";
 #endif
 }