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-.\" Copyright (c) 1980, 1991, 1993
-.\"	The Regents of the University of California.  All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\"    must display the following acknowledgement:
-.\"	This product includes software developed by the University of
-.\"	California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"     @(#)unlink.2	8.1 (Berkeley) 6/4/93
-.\"	$Id$
-.\"
-.Dd June 4, 1993
-.Dt UNLINK 2
-.Os BSD 4
-.Sh NAME
-.Nm unlink
-.Nd remove directory entry
-.Sh SYNOPSIS
-.Fd #include <unistd.h>
-.Ft int
-.Fn unlink "const char *path"
-.Sh DESCRIPTION
-The
-.Fn unlink
-function
-removes the link named by
-.Fa path
-from its directory and decrements the link count of the
-file which was referenced by the link.
-If that decrement reduces the link count of the file
-to zero,
-and no process has the file open, then
-all resources associated with the file are reclaimed.
-If one or more process have the file open when the last link is removed,
-the link is removed, but the removal of the file is delayed until
-all references to it have been closed.
-.Fa path
-may not be a directory.
-.Sh RETURN VALUES
-Upon successful completion, a value of 0 is returned.
-Otherwise, a value of -1 is returned and
-.Va errno
-is set to indicate the error.
-.Sh ERRORS
-The
-.Fn unlink
-succeeds unless:
-.Bl -tag -width ENAMETOOLONGAA
-.It Bq Er ENOTDIR
-A component of the path prefix is not a directory.
-.It Bq Er ENAMETOOLONG
-A component of a pathname exceeded 255 characters,
-or an entire path name exceeded 1023 characters.
-.It Bq Er ENOENT
-The named file does not exist.
-.It Bq Er EACCES
-Search permission is denied for a component of the path prefix.
-.It Bq Er EACCES
-Write permission is denied on the directory containing the link
-to be removed.
-.It Bq Er ELOOP
-Too many symbolic links were encountered in translating the pathname.
-.It Bq Er EPERM
-The named file is a directory.
-.It Bq Er EPERM
-The directory containing the file is marked sticky,
-and neither the containing directory nor the file to be removed
-are owned by the effective user ID.
-.It Bq Er EBUSY
-The entry to be unlinked is the mount point for a
-mounted file system.
-.It Bq Er EIO
-An I/O error occurred while deleting the directory entry
-or deallocating the inode.
-.It Bq Er EROFS
-The named file resides on a read-only file system.
-.It Bq Er EFAULT
-.Fa Path
-points outside the process's allocated address space.
-.El
-.Sh SEE ALSO
-.Xr close 2 ,
-.Xr link 2 ,
-.Xr rmdir 2 ,
-.Xr symlink 7
-.Sh HISTORY
-An
-.Fn unlink
-function call appeared in
-.At v6 .
-.Pp
-The
-.Fn unlink
-system call traditionally allows the super-user to unlink directories which
-can damage the filesystem integrity.  This implementation no longer permits
-it.