futimesat - change timestamps of a file relative to a directory file descriptor
#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
This system call is obsolete.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.
On success,
futimesat() returns a 0. On error, -1 is returned and
errno is set to indicate 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.
- ENOTDIR
- pathname is relative and dirfd is a file descriptor
referring to a file other than a directory.
futimesat() was added to Linux in kernel 2.6.16; library support was
added to glibc in version 2.4.
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.
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)