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From d8e81ab747e96cb687e8d6981ef4a0fb58050884 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Wed, 9 Jun 2021 10:55:22 +0200
Subject: [PATCH] Linux: drop O_PATH usage
O_PATH is available since Linux 2.6.39, but we are using fstat(2) on the
returned file descriptor in LinuxProcessList_statProcessDir(), which
is only supported since Linux 3.6.
Fixes #534
---
linux/LinuxProcessList.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
--- a/linux/LinuxProcessList.c
+++ b/linux/LinuxProcessList.c
@@ -58,12 +58,6 @@
#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 long long btime = -1;
static long jiffy;
@@ -1313,7 +1307,7 @@
proc->tgid = parent ? parent->pid : pid;
#ifdef HAVE_OPENAT
- int procFd = openat(dirFd, entry->d_name, O_PATH | O_DIRECTORY | O_NOFOLLOW);
+ int procFd = openat(dirFd, entry->d_name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW);
if (procFd < 0)
goto errorReadingProcess;
#else
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