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FUTIMES(3) Linux Programmer's Manual FUTIMES(3)
futimes, lutimes - change file timestamps
#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
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.
On success, zero is returned. On error, -1 is returned, and errno is set
appropriately.
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.
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.
These functions are not specified in any standard. Other than Linux, they are
only available on the BSDs.
utime(2), utimensat(2), symlink(7)
This page is part of release 3.32 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/.
Linux 2008-04-07 FUTIMES(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface