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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | VERSIONS | STANDARDS | HISTORY | NOTES | SEE ALSO | COLOPHON |
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futimesat(2) System Calls Manual futimesat(2)
futimesat - change timestamps of a file relative to a directory
file descriptor
Standard C library (libc, -lc)
#include <fcntl.h> /* Definition of AT_* constants */
#include <sys/time.h>
[[deprecated]] int futimesat(int dirfd, const char *path,
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This system call is obsolete.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 path 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 path is relative and dirfd is the special value AT_FDCWD, then
path is interpreted relative to the current working directory of
the calling process (like utimes(2)).
If path 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 path is relative but dirfd is neither AT_FDCWD nor a valid
file descriptor.
ENOTDIR
path is relative and dirfd is a file descriptor referring
to a file other than a directory.
glibc
If path is NULL, then the glibc futimesat() wrapper function
updates the times for the file referred to by dirfd.
None.
Linux 2.6.16, glibc 2.4.
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)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.15.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2025-08-11. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
man-pages@man7.org
Linux man-pages 6.15 2025-05-17 futimesat(2)
Pages that refer to this page: open(2), syscalls(2), utime(2), utimensat(2)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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