From a9d8eb49ef91c31fddc3e4f2f76e9b98e1a52a1d Mon Sep 17 00:00:00 2001
From: Sebastian Lackner
Date: Mon, 14 Jan 2019 03:00:49 +0100
Subject: syscallcompat: Drop Fstatat emulation on macOS.

---
 internal/syscallcompat/sys_common.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'internal/syscallcompat/sys_common.go')

diff --git a/internal/syscallcompat/sys_common.go b/internal/syscallcompat/sys_common.go
index 577e2ed..b6bbdff 100644
--- a/internal/syscallcompat/sys_common.go
+++ b/internal/syscallcompat/sys_common.go
@@ -97,6 +97,16 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 	return unix.Mkdirat(dirfd, path, mode)
 }
 
+// Fstatat syscall.
+func Fstatat(dirfd int, path string, stat *unix.Stat_t, flags int) (err error) {
+	// Why would we ever want to call this without AT_SYMLINK_NOFOLLOW?
+	if flags&unix.AT_SYMLINK_NOFOLLOW == 0 {
+		tlog.Warn.Printf("Fstatat: adding missing AT_SYMLINK_NOFOLLOW flag")
+		flags |= unix.AT_SYMLINK_NOFOLLOW
+	}
+	return unix.Fstatat(dirfd, path, stat, flags)
+}
+
 const XATTR_SIZE_MAX = 65536
 
 // Make the buffer 1kB bigger so we can detect overflows
-- 
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