SWAPON(2)               COMMAND REFERENCE               SWAPON(2)



NAME
     swapon - add a swap device for interleaved paging/swapping

SYNOPSIS
     swapon(special)
     char *special;

DESCRIPTION
     Swapon makes the block device special available to the
     system for allocation for paging and swapping.  The names of
     potentially available devices are known to the system and
     defined at system configuration time.  The size of the swap
     area on special is calculated at the time the device is
     first made available for swapping.

DIAGNOSTICS
     Swapon will fail if one or more of the following are true:

     [ENOENT]       Special does not exist.

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

     [ENAMETOOLONG] The argument special is too long.

     [EACCES]       Search permission is denied on a component of
                    the path prefix of special.

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

     [ELOOP]        Too many symbolic links were encountered in
                    translating the pathname.

     [EFAULT]       special points to an invalid address.

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

     [ENOTBLK]      Special is not a block device.

     [ENXIO]        The major device number of special is out of
                    range (this indicates no device driver exists
                    for the associated hardware).

     [EBUSY]        Swapping is already being done on the device.

     [ENODEV]       The device is not in the swap table.

RETURN VALUE
     Upon successful completion, a value of 0 is returned.
     Otherwise, a value of -1 is returned and errno is set to



Printed 4/6/89                                                  1

SWAPON(2)               COMMAND REFERENCE               SWAPON(2)



     indicate the error.

CAVEATS
     There is no way to stop swapping on a disk so that the pack
     may be dismounted.

SEE ALSO
     swapon(8)















































Printed 4/6/89                                                  2

%%index%%
na:288,110;
sy:398,411;
de:809,566;
di:1375,1431;
rv:2806,254;3420,26;
ca:3446,168;
se:3614,152;
%%index%%000000000130