219 lines
4.7 KiB
HTML
219 lines
4.7 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of FUTIMESAT</TITLE>
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</HEAD><BODY>
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<H1>FUTIMESAT</H1>
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Section: Linux Programmer's Manual (2)<BR>Updated: 2017-09-15<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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futimesat - change timestamps of a file relative to a directory file descriptor
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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<B>#include <<A HREF="file:///usr/include/fcntl.h">fcntl.h</A>> /* Definition of AT_* constants */</B>
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<B>#include <<A HREF="file:///usr/include/sys/time.h">sys/time.h</A>></B>
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<B>int futimesat(int </B><I>dirfd</I><B>, const char *</B><I>pathname</I><B>,</B>
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<B> const struct timeval </B><I>times</I><B>[2]);</B>
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</PRE>
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<P>
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Feature Test Macro Requirements for glibc (see
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<B><A HREF="/cgi-bin/man/man2html?7+feature_test_macros">feature_test_macros</A></B>(7)):
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<P>
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<B>futimesat</B>():
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_GNU_SOURCE
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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This system call is obsolete.
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Use
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<B><A HREF="/cgi-bin/man/man2html?2+utimensat">utimensat</A></B>(2)
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instead.
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<P>
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The
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<B>futimesat</B>()
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system call operates in exactly the same way as
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<B><A HREF="/cgi-bin/man/man2html?2+utimes">utimes</A></B>(2),
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except for the differences described in this manual page.
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<P>
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If the pathname given in
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<I>pathname</I>
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is relative, then it is interpreted relative to the directory
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referred to by the file descriptor
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<I>dirfd</I>
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(rather than relative to the current working directory of
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the calling process, as is done by
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<B><A HREF="/cgi-bin/man/man2html?2+utimes">utimes</A></B>(2)
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for a relative pathname).
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<P>
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If
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<I>pathname</I>
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is relative and
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<I>dirfd</I>
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is the special value
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<B>AT_FDCWD</B>,
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then
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<I>pathname</I>
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is interpreted relative to the current working
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directory of the calling process (like
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<B><A HREF="/cgi-bin/man/man2html?2+utimes">utimes</A></B>(2)).
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<P>
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If
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<I>pathname</I>
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is absolute, then
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<I>dirfd</I>
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is ignored.
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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On success,
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<B>futimesat</B>()
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returns a 0.
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On error, -1 is returned and
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<I>errno</I>
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is set to indicate the error.
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<A NAME="lbAF"> </A>
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<H2>ERRORS</H2>
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The same errors that occur for
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<B><A HREF="/cgi-bin/man/man2html?2+utimes">utimes</A></B>(2)
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can also occur for
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<B>futimesat</B>().
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The following additional errors can occur for
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<B>futimesat</B>():
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<DL COMPACT>
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<DT id="1"><B>EBADF</B>
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<DD>
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<I>dirfd</I>
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is not a valid file descriptor.
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<DT id="2"><B>ENOTDIR</B>
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<DD>
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<I>pathname</I>
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is relative and
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<I>dirfd</I>
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is a file descriptor referring to a file other than a directory.
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</DL>
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<A NAME="lbAG"> </A>
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<H2>VERSIONS</H2>
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<B>futimesat</B>()
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was added to Linux in kernel 2.6.16;
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library support was added to glibc in version 2.4.
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<A NAME="lbAH"> </A>
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<H2>CONFORMING TO</H2>
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This system call is nonstandard.
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It was implemented from a specification that was proposed for POSIX.1,
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but that specification was replaced by the one for
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<B><A HREF="/cgi-bin/man/man2html?2+utimensat">utimensat</A></B>(2).
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<P>
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A similar system call exists on Solaris.
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<A NAME="lbAI"> </A>
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<H2>NOTES</H2>
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<A NAME="lbAJ"> </A>
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<H3>Glibc notes</H3>
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If
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<I>pathname</I>
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is NULL, then the glibc
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<B>futimesat</B>()
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wrapper function updates the times for the file referred to by
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<I>dirfd</I>.
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<A NAME="lbAK"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?2+stat">stat</A></B>(2),
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<B><A HREF="/cgi-bin/man/man2html?2+utimensat">utimensat</A></B>(2),
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<B><A HREF="/cgi-bin/man/man2html?2+utimes">utimes</A></B>(2),
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<B><A HREF="/cgi-bin/man/man2html?3+futimes">futimes</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?7+path_resolution">path_resolution</A></B>(7)
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<A NAME="lbAL"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="3"><A HREF="#lbAB">NAME</A><DD>
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<DT id="4"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="5"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="6"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="7"><A HREF="#lbAF">ERRORS</A><DD>
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<DT id="8"><A HREF="#lbAG">VERSIONS</A><DD>
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<DT id="9"><A HREF="#lbAH">CONFORMING TO</A><DD>
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<DT id="10"><A HREF="#lbAI">NOTES</A><DD>
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<DL>
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<DT id="11"><A HREF="#lbAJ">Glibc notes</A><DD>
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</DL>
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<DT id="12"><A HREF="#lbAK">SEE ALSO</A><DD>
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<DT id="13"><A HREF="#lbAL">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:32 GMT, March 31, 2021
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