From 8149823d56653b7d23397a235edb609b358ff17d Mon Sep 17 00:00:00 2001
From: Chris Burr <chrisburr@users.noreply.github.com>
Date: Sat, 12 Dec 2020 11:41:15 +0100
Subject: [PATCH] Define O_PATH if not already defined

---
 linux/LinuxProcessList.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/linux/LinuxProcessList.c b/linux/LinuxProcessList.c
index e228220f..1dab5dbb 100644
--- a/linux/LinuxProcessList.c
+++ b/linux/LinuxProcessList.c
@@ -57,6 +57,12 @@ in the source distribution for its full text.
 #endif
 
 
+// CentOS 6's kernel doesn't provide a definition of O_PATH
+// based on definition taken from uapi/asm-generic/fcnth.h in Linux kernel tree
+#ifndef O_PATH
+# define O_PATH 010000000
+#endif
+
 static FILE* fopenat(openat_arg_t openatArg, const char* pathname, const char* mode) {
    assert(String_eq(mode, "r")); /* only currently supported mode */