aiolkinit(ADM)

aiolkinit -- set up asynchronous I/O memory locking permissions

Syntax

/etc/aiolkinit [raw-device]

Description

The aiolkinit utility allows a system administrator to control which users may lock memory for AIO use, and how much memory can be locked. This utility reads the /usr/lib/aiomemlock file, and sets up an internal kernel table entry for each line.

Typically, aiolkinit is not invoked directly, but is called by a script in the /etc/rc2.d directory. Note that this script should be invoked before starting up any program that uses AIO. Invoking aiolkinit after boot causes entries that have been added to /usr/lib/aiomemlock to be revised. Removing entries does not affect their memory locking ability until reboot.

The aiolkinit program defaults to opening /dev/rroot to call the appropriate AIO I/O control command (ioctl). If /dev/rroot does not support AIO, an alternate AIO device must be provided as an argument.

Limitations

This command can be run only by the super user.

Files


/usr/include/sys/async.h
definitions for asynchronous I/O

/usr/lib/aiomemlock
permissions file to control how much memory can be locked by whom

/usr/bin/aioinfo
command to print statistics on AIO usage

See also

aio(F), aio(HW), aioinfo(ADM), aiomemlock(F)
© 2005 The SCO Group, Inc. All rights reserved.
SCO OpenServer Release 6.0.0 -- 03 June 2005