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32 .\" @(#)swapon.2 8.1 (Berkeley) 6/4/93
33 .\" $FreeBSD: src/lib/libc/sys/swapon.2,v 1.6.2.6 2001/12/14 18:34:01 ru Exp $
34 .\" $DragonFly: src/lib/libcr/sys/Attic/swapon.2,v 1.2 2003/06/17 04:26:47 dillon Exp $
41 .Nd add a swap device for interleaved paging/swapping
47 .Fn swapon "const char *special"
50 makes the block device
52 available to the system for
53 allocation for paging and swapping. The names of potentially
54 available devices are known to the system and defined at system
55 configuration time. The size of the swap area on
57 is calculated at the time the device is first made available
60 If an error has occurred, a value of -1 is returned and
62 is set to indicate the error.
68 A component of the path prefix is not a directory.
69 .It Bq Er ENAMETOOLONG
70 A component of a pathname exceeded 255 characters,
71 or an entire path name exceeded 1023 characters.
73 The named device does not exist.
75 Search permission is denied for a component of the path prefix.
77 Too many symbolic links were encountered in translating the pathname.
79 The caller is not the super-user.
82 is not a block device.
84 The device specified by
87 been made available for swapping
89 The device configured by
92 configured into the system as a swap device.
94 The major device number of
96 is out of range (this indicates no device driver exists
97 for the associated hardware).
99 An I/O error occurred while opening the swap device.
102 points outside the process's allocated address space.
108 There is no way to stop swapping on a disk so that the pack may be
111 This call will be upgraded in future versions of the system.
115 function call appeared in