NAME    [Toc]    [Back]

     utime - set file times

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <utime.h>

     int
     utime(const char *file, const struct utimbuf *timep);

DESCRIPTION    [Toc]    [Back]

     This interface is obsoleted by utimes(2).

     The utime() function sets the access and modification times of the named
     file.

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

     If timep is non-NULL, time is assumed to be a pointer to a utimbuf structure,
 as defined in <utime.h>:

           struct utimbuf {
                   time_t actime;          /* Access time */
                   time_t modtime;         /* Modification time */
           };

     The access time is set to the value of the actime member, and the modification
 time is set to the value of the modtime member.  The times are
     measured in seconds since 0 hours, 0 minutes, 0 seconds, January 1, 1970
     Coordinated Universal Time (UTC).  The calling process must be the owner
     of the file or be the super-user.

     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]

     utime() 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 super-user, and
                        write access is denied.

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

     [EINVAL]           The pathname contains a character with the high-order
                        bit set.

     [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 255 characters, or
                        an entire path name exceeded 1023 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 super-user.

     [EROFS]            The file system containing the file is mounted readonly.

SEE ALSO    [Toc]    [Back]

     stat(2), utimes(2)

STANDARDS    [Toc]    [Back]

     The utime() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').

HISTORY    [Toc]    [Back]

     A utime() function appeared in Version 7 AT&T UNIX.

BSD                             August 13, 1993                            BSD