1 .\" $NetBSD: swapon.3,v 1.16 2010/05/31 12:16:20 njoly Exp $
3 .\" Copyright (c) 1980, 1991, 1993
4 .\" The Regents of the University of California. All rights reserved.
6 .\" Redistribution and use in source and binary forms, with or without
7 .\" modification, are permitted provided that the following conditions
9 .\" 1. Redistributions of source code must retain the above copyright
10 .\" notice, this list of conditions and the following disclaimer.
11 .\" 2. Redistributions in binary form must reproduce the above copyright
12 .\" notice, this list of conditions and the following disclaimer in the
13 .\" documentation and/or other materials provided with the distribution.
14 .\" 3. Neither the name of the University nor the names of its contributors
15 .\" may be used to endorse or promote products derived from this software
16 .\" without specific prior written permission.
18 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 .\" @(#)swapon.2 8.1 (Berkeley) 6/4/93
37 .Nd add a swap device for interleaved paging/swapping
41 .Fn swapon "const char *special"
44 .\" This interface is available from the compatibility library, libcompat and
45 This interface is provided for compatibility only and
51 makes the block device
53 available to the system for
54 allocation for paging and swapping.
55 The names of potentially available devices are known to the system
56 and defined at system configuration time.
57 The size of the swap area on
59 is calculated at the time the device is first made available
62 If an error has occurred, a value of \-1 is returned and
64 is set to indicate the error.
68 .Bl -tag -width ENAMETOOLONG
70 A component of the path prefix is not a directory.
71 .It Bq Er ENAMETOOLONG
72 A component of a pathname exceeded
74 characters, or an entire path name exceeded
78 The named device does not exist.
80 Search permission is denied for a component of the path prefix.
82 Too many symbolic links were encountered in translating the pathname.
84 The caller is not the super-user.
87 is not a block device.
89 The device specified by
92 been made available for swapping
94 The device configured by
97 configured into the system as a swap device.
99 The major device number of
101 is out of range (this indicates no device driver exists
102 for the associated hardware).
104 An I/O error occurred while opening the swap device.
107 points outside the process's allocated address space.
116 function call appeared in
121 This call will be upgraded in future versions of the system.