From 83b989ecee478be083db8dc0cc7a5387615bd3cb Mon Sep 17 00:00:00 2001
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From: Andrey Semashev <andrey.semashev@gmail.com>
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Date: Wed, 31 Jul 2019 16:28:05 +0300
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Subject: [PATCH] Added support for utimensat for better POSIX.1-2008
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compliance.
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POSIX.1-2008 marks utime as obsolete and replaces it with utimensat.
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uClibc-ng has an option for removing utime, including the corresponding
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header.
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Closes https://github.com/boostorg/filesystem/pull/115.
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---
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libs/filesystem/src/operations.cpp | 24 ++++++++++++++++++++++--
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1 file changed, 22 insertions(+), 2 deletions(-)
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diff --git a/src/operations.cpp b/src/operations.cpp
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index 9bba1cf7a..038109d35 100644
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--- a/libs/filesystem/src/operations.cpp
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+++ b/libs/filesystem/src/operations.cpp
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@@ -62,7 +62,7 @@
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#endif
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#ifndef _POSIX_PTHREAD_SEMANTICS
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-# define _POSIX_PTHREAD_SEMANTICS // Sun readdir_r()needs this
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+# define _POSIX_PTHREAD_SEMANTICS // Sun readdir_r() needs this
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#endif
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#include <boost/filesystem/operations.hpp>
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@@ -119,7 +119,9 @@ using std::wstring;
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# include <dirent.h>
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# include <unistd.h>
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# include <fcntl.h>
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-# include <utime.h>
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+# if _POSIX_C_SOURCE < 200809L
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+# include <utime.h>
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+# endif
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# include "limits.h"
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# else // BOOST_WINDOW_API
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@@ -1451,6 +1453,22 @@ namespace detail
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system::error_code* ec)
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{
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# ifdef BOOST_POSIX_API
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+# if _POSIX_C_SOURCE >= 200809L
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+
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+ struct timespec times[2] = {};
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+
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+ // Keep the last access time unchanged
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+ times[0].tv_nsec = UTIME_OMIT;
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+
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+ times[1].tv_sec = new_time;
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+
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+ if (BOOST_UNLIKELY(::utimensat(AT_FDCWD, p.c_str(), times, 0) != 0))
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+ {
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+ error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
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+ return;
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+ }
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+
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+# else // _POSIX_C_SOURCE >= 200809L
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struct stat path_stat;
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if (error(::stat(p.c_str(), &path_stat)!= 0,
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@@ -1462,6 +1480,8 @@ namespace detail
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error(::utime(p.c_str(), &buf)!= 0 ? BOOST_ERRNO : 0,
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p, ec, "boost::filesystem::last_write_time");
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+# endif // _POSIX_C_SOURCE >= 200809L
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+
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# else
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handle_wrapper hw(
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