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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   This system call is obsolete.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 4.09 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/.



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