From 83b989ecee478be083db8dc0cc7a5387615bd3cb Mon Sep 17 00:00:00 2001
From: Andrey Semashev <andrey.semashev@gmail.com>
Date: Wed, 31 Jul 2019 16:28:05 +0300
Subject: [PATCH] Added support for utimensat for better POSIX.1-2008
compliance.
POSIX.1-2008 marks utime as obsolete and replaces it with utimensat.
uClibc-ng has an option for removing utime, including the corresponding
header.
Closes https://github.com/boostorg/filesystem/pull/115.
---
libs/filesystem/src/operations.cpp | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/src/operations.cpp b/src/operations.cpp
index 9bba1cf7a..038109d35 100644
--- a/libs/filesystem/src/operations.cpp
+++ b/libs/filesystem/src/operations.cpp
@@ -62,7 +62,7 @@
#endif
#ifndef _POSIX_PTHREAD_SEMANTICS
-# define _POSIX_PTHREAD_SEMANTICS // Sun readdir_r()needs this
+# define _POSIX_PTHREAD_SEMANTICS // Sun readdir_r() needs this
#endif
#include <boost/filesystem/operations.hpp>
@@ -119,7 +119,9 @@ using std::wstring;
# include <dirent.h>
# include <unistd.h>
# include <fcntl.h>
-# include <utime.h>
+# if _POSIX_C_SOURCE < 200809L
+# include <utime.h>
+# endif
# include "limits.h"
# else // BOOST_WINDOW_API
@@ -1459,6 +1461,22 @@ namespace detail
system::error_code* ec)
{
# ifdef BOOST_POSIX_API
+# if _POSIX_C_SOURCE >= 200809L
+
+ struct timespec times[2] = {};
+
+ // Keep the last access time unchanged
+ times[0].tv_nsec = UTIME_OMIT;
+
+ times[1].tv_sec = new_time;
+
+ if (BOOST_UNLIKELY(::utimensat(AT_FDCWD, p.c_str(), times, 0) != 0))
+ {
+ error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
+ return;
+ }
+
+# else // _POSIX_C_SOURCE >= 200809L
struct stat path_stat;
if (error(::stat(p.c_str(), &path_stat)!= 0,
@@ -1470,6 +1488,8 @@ namespace detail
error(::utime(p.c_str(), &buf)!= 0 ? BOOST_ERRNO : 0,
p, ec, "boost::filesystem::last_write_time");
+# endif // _POSIX_C_SOURCE >= 200809L
+
# else
handle_wrapper hw(