FUTIMESAT(2) Linux Programmer's Manual FUTIMESAT(2)
futimesat - change timestamps of a file relative to a directory file descriptor
#include <fcntl.h> /* Definition of AT_* constants */
int futimesat(int dirfd, const char *pathname,
const struct timeval times);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
This system call is obsolete.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 path-
If pathname is relative and dirfd is the special value AT_FDCWD, then pathname is inter-
preted relative to the current working directory of the calling process (like utimes(2)).
If pathname is absolute, then dirfd is ignored.
On success, futimesat() returns a 0. On error, -1 is returned and errno is set to indi-
cate the error.
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.
pathname is relative and dirfd is a file descriptor referring to a file other than
futimesat() was added to Linux in kernel 2.6.16; library support was added to glibc in
This system call is nonstandard. It was implemented from a specification that was pro-
posed for POSIX.1, but that specification was replaced by the one for utimensat(2).
A similar system call exists on Solaris.
If pathname is NULL, then the glibc futimesat() wrapper function updates the times for the
file referred to by dirfd.
stat(2), utimensat(2), utimes(2), futimes(3), path_resolution(7)
This page is part of release 3.53 of the Linux man-pages project. A description of the
project, and information about reporting bugs, can be found at
Linux 2012-05-10 FUTIMESAT(2)