Manpages - futimesat.2

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This system call is obsolete.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. (See *openat*(2) for an explanation of why the dirfd argument is useful.)

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

pathname is relative but dirfd is neither AT_FDCWD nor 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.

*stat*(2), *utimensat*(2), *utimes*(2), *futimes*(3), *path_resolution*(7)

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