php man page for futimesat

FUTIMESAT(2)						     Linux Programmer's Manual						      FUTIMESAT(2)

NAME
       futimesat - change timestamps of a file relative to a directory file descriptor

SYNOPSIS
       #include <fcntl.h> /* Definition of AT_* constants */
       #include <sys/time.h>

       int futimesat(int dirfd, const char *pathname,
		     const struct timeval times[2]);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       futimesat(): _GNU_SOURCE

DESCRIPTION
       This system call is obsolete.  Use utimensat(2) instead.

       The futimesat() system call operates in exactly the same way as utimes(2), except for the differences described in this manual page.

       If  the	pathname  given in pathname is relative, then it is interpreted relative to the directory referred to by the file descriptor dirfd
       (rather than relative to the current working directory of the calling process, as is done by utimes(2) for a relative pathname).

       If pathname is relative and dirfd is the special value AT_FDCWD, then pathname is interpreted relative to the current working directory	of
       the calling process (like utimes(2)).

       If pathname is absolute, then dirfd is ignored.

RETURN VALUE
       On success, futimesat() returns a 0.  On error, -1 is returned and errno is set to indicate the error.

ERRORS
       The same errors that occur for utimes(2) can also occur for futimesat().  The following additional errors can occur for futimesat():

       EBADF  dirfd is not a valid file descriptor.

       ENOTDIR
	      pathname is relative and dirfd is a file descriptor referring to a file other than a directory.

VERSIONS
       futimesat() was added to Linux in kernel 2.6.16; library support was added to glibc in version 2.4.

CONFORMING TO
       This  system  call  is  nonstandard.   It  was  implemented  from a specification that was proposed for POSIX.1, but that specification was
       replaced by the one for utimensat(2).

       A similar system call exists on Solaris.

NOTES
   Glibc notes
       If pathname is NULL, then the glibc futimesat() wrapper function updates the times for the file referred to by dirfd.

SEE ALSO
       stat(2), utimensat(2), utimes(2), futimes(3), path_resolution(7)

COLOPHON
       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2017-09-15							      FUTIMESAT(2)