4.3BSD - /usr/man/cat2/link.0

LINK(2)                                                                LINK(2)


NAME
       link - make a hard link to a file

SYNOPSIS
       link(name1, name2)
       char *name1, *name2;

DESCRIPTION
       A  hard  link  to name1 is created; the link has the name name2.  Name1
       must exist.

       With hard links, both name1 and name2 must be in the same file  system.
       Unless  the  caller  is  the super-user, name1 must not be a directory.
       Both the old and the new link share equal  access  and  rights  to  the
       underlying object.

RETURN VALUE
       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
       Link will fail and no link will be created if one or more of  the  fol‐
       lowing are true:

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

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

       [ENAMETOOLONG] A component of either pathname exceeded 255  characters,
                      or entire length of either path name exceeded 1023 char‐
                      acters.

       [ENOENT]       A component of either path prefix does not exist.

       [EACCES]       A component of either path prefix denies search  permis‐
                      sion.

       [EACCES]       The  requested link requires writing in a directory with
                      a mode that denies write permission.

       [ELOOP]        Too many symbolic links were encountered in  translating
                      one of the pathnames.

       [ENOENT]       The file named by name1 does not exist.

       [EEXIST]       The link named by name2 does exist.

       [EPERM]        The file named by name1 is a directory and the effective
                      user ID is not super-user.

       [EXDEV]        The link named by name2 and the file named by name1  are
                      on different file systems.

       [ENOSPC]       The  directory  in  which  the entry for the new link is
                      being placed cannot be  extended  because  there  is  no
                      space  left on the file system containing the directory.

       [EDQUOT]       The directory in which the entry for  the  new  link  is
                      being placed cannot be extended because the user’s quota
                      of disk blocks on the file system containing the  direc‐
                      tory has been exhausted.

       [EIO]          An  I/O  error occurred while reading from or writing to
                      the file system to make the directory entry.

       [EROFS]        The requested link requires writing in a directory on  a
                      read-only file system.

       [EFAULT]       One  of the pathnames specified is outside the process’s
                      allocated address space.

SEE ALSO
       symlink(2), unlink(2)


4th Berkeley Distribution       August 26, 1985                        LINK(2)