FUTIMES(3)

NAME
futimes, lutimes - change file timestamps

SYNOPSIS
#include <sys/time.h>
int futimes(int fd, const struct timeval tv[2]);
int lutimes(const char *filename, const struct timeval tv[2]);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

futimes(), lutimes(): _BSD_SOURCE

DESCRIPTION
futimes() changes the access and modification times of a file in the same way as utimes(2), with the difference that the file whose timestamps are to be changed is specified via a file descriptor, fd, rather than via a pathname. lutimes() changes the access and modification times of a file in the same way as utimes(2), with the difference that if filename refers to a symbolic link, then the link is not dereferenced: instead, the timestamps of the symbolic link are changed.

RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.

ERRORS
Errors are as for utimes(2), with the following additions for futimes():

EBADF
    fd is not a valid file descriptor.

ENOSYS
    The /proc file system could not be accessed.

VERSIONS
futimes() is available since glibc 2.3. lutimes() is available since glibc 2.6, and is implemented using the utimensat(2) system call, which is supported since kernel 2.6.22.

CONFORMING TO
These functions are not specified in any standard. Other than Linux, they are only available on the BSDs.

SEE ALSO
utime(2), utimensat(2), symlink(7)

COLOPHON
This page is part of release 3.41 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.