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futimesat(2) System Calls Manual futimesat(2)
NAME
futimesat - change timestamps of a file relative to a directory file
descriptor
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <fcntl.h> /* Definition of AT_* constants */
#include <sys/time.h>
[[deprecated]] 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This system call is obsolete.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. (See openat(2) for an
explanation of why the dirfd argument is useful.)
RETURN VALUE
On success, futimesat() returns a 0. On error, -1 is returned and er-
rno is set to indicate the error.
ERRORS
The same errors that occur for utimes(2) can also occur for futime-
sat(). 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.
VERSIONS
glibc
If pathname is NULL, then the glibc futimesat() wrapper function up-
dates the times for the file referred to by dirfd.
STANDARDS
None.
HISTORY
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.
NOTES
SEE ALSO
stat(2), utimensat(2), utimes(2), futimes(3), path_resolution(7)
Linux man-pages 6.04 2023-03-30 futimesat(2)
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