NAME    [Toc]    [Back]

     utimes - set file access and modification times

SYNOPSIS    [Toc]    [Back]

     #include <sys/time.h>

     int
     utimes(const char *file, const struct timeval *times);

     int
     futimes(int fd, const struct timeval *times);

DESCRIPTION    [Toc]    [Back]

     The access and modification times of the file named by  path
or referenced
     by fd are changed as specified by the argument times.

     If  times is NULL, the access and modification times are set
to the current
 time.  The caller must be the owner of the  file,  have
permission to
     write the file, or be the superuser.

     If  times is non-null, it is assumed to point to an array of
two timeval
     structures.  The access time is set  to  the  value  of  the
first element,
     and  the modification time is set to the value of the second
element.  The
     caller must be the owner of the file or be the superuser.

     In either case, the inode-change-time of the file is set  to
the current
     time.

RETURN VALUES    [Toc]    [Back]

     Upon  successful completion, a value of 0 is returned.  Otherwise, a value
     of -1 is returned and errno is set to indicate the error.

ERRORS    [Toc]    [Back]

     utimes() will fail if:

     [EACCES]      Search permission is denied for a component of
the path
                   prefix;  or the times argument is NULL and the
effective user
 ID of the process does not match the  owner
of the file,
                   and  is not the superuser, and write access is
denied.

     [EFAULT]      File or times points outside the process's allocated address
 space.

     [EIO]         An I/O error occurred while reading or writing
the affected
                   inode.

     [ELOOP]       Too many symbolic links  were  encountered  in
translating the
                   pathname.

     [ENAMETOOLONG]
                   A  component of a pathname exceeded {NAME_MAX}
characters,
                   or an entire  path  name  exceeded  {PATH_MAX}
characters.

     [ENOENT]      The named file does not exist.

     [ENOTDIR]     A component of the path prefix is not a directory.

     [EPERM]       The times argument is not NULL and the calling
process's
                   effective  user ID does not match the owner of
the file and
                   is not the superuser.

     [EROFS]       The file system containing the file is mounted
read-only.
     futimes() will fail if:

     [EBADF]       fd does not refer to a valid descriptor.

     [EACCES]       The  times argument is NULL and the effective
user ID of the
                   process does not match the owner of the  file,
and is not
                   the superuser, and write access is denied.

     [EFAULT]       times  points outside the process's allocated
address space.

     [EIO]         An I/O error occurred while reading or writing
the affected
                   inode.

     [EPERM]       The times argument is not NULL and the calling
process's
                   effective user ID does not match the owner  of
the file and
                   is not the superuser.

     [EROFS]       The file system containing the file is mounted
read-only.

SEE ALSO    [Toc]    [Back]

     stat(2), utime(3)

HISTORY    [Toc]    [Back]

     The  utimes()  function  call  appeared  in   4.2BSD.    The
futimes() function
     call appeared in NetBSD 1.2.

OpenBSD      3.6                           June      4,      1993