FUTIMES(3)		   Linux Programmer's Manual		    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():
	   Since glibc 2.19:
	       _DEFAULT_SOURCE
	   Glibc 2.19 and earlier:
	       _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	 time-
       stamps 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	 time-
       stamps 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 filesystem could not be accessed.

       The following additional error may occur for lutimes():

       ENOSYS The  kernel does not support this call; Linux 2.6.22 or later is
	      required.

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.

ATTRIBUTES
       For  an	explanation  of	 the  terms  used   in	 this	section,   see
       attributes(7).

       +---------------------+---------------+---------+
       |Interface	     | Attribute     | Value   |
       +---------------------+---------------+---------+
       |futimes(), lutimes() | Thread safety | MT-Safe |
       +---------------------+---------------+---------+
CONFORMING TO
       These  functions	 are not specified in any standard.  Other than Linux,
       they are available only on the BSDs.

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

COLOPHON
       This page is part of release 4.10 of the Linux  man-pages  project.   A
       description  of	the project, information about reporting bugs, and the
       latest	 version    of	  this	  page,	   can	   be	  found	    at
       https://www.kernel.org/doc/man-pages/.



Linux				  2016-03-15			    FUTIMES(3)