Keywords - D

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data flow

between applications and devices

· Device drivers · Device services ·

between Dev and its drivers

· Device drivers ·

date and time stamps

· Date and time stamps ·

DEAD (process state)

· Process states ·

default network root

· Current working directory · Default network root ·

changing

· Default network root ·

getting

· Default network root ·

setting

· Default network root ·

deleting characters

· Edited input mode ·

Dev.con (driver process)

· The QNX console ·

Dev.par (driver process)

· Parallel devices ·

Dev.ser (driver process)

· Serial devices ·

device control

· Device control ·

device drivers

See drivers; data flow

Device Manager

auxiliary services for terminal devices

· Device services ·

general responsibilities

· Introduction ·

device names, creating

· Creating special device names ·

devices

accessing across the network

· Network root ·

device subsystem performance

· Device subsystem performance ·

parallel

· Parallel devices ·

serial

· Serial devices ·

See also terminal devices

directories

· Directories · What is a file? ·

changing

· A note about cd · Current working directory ·

current working directory

· Current working directory · Directory links ·

directory entries

· Directories ·

extent information

· Where extents are stored ·

reading

· Reading directory entries ·

writing

· Directory operations ·

dot (directory link)

· Directory links ·

dot dot (directory link)

· Directory links ·

extents

· Extents ·

filenames

· Directories · Links and inodes ·

inodes

· Links and inodes ·

linking

· Directory operations · Symbolic links ·

links

· Directory links · Links and inodes ·

navigating directory structure

· Directories ·

parent directory

· Directory links ·

pseudonyms

· Symbolic links ·

root directory, special characteristics

· Root directory ·

disconnecting communications channel

· Device services ·

disk subsystems

· Disks and disk subsystems ·

components

· Disks and disk subsystems ·

multiple

· Disks and disk subsystems ·

disks

bad blocks on disk

· Filesystem recovery ·

DOS disks, accessing

· The DOS Filesystem Manager ·

how blocks are numbered

· Disks and disk subsystems ·

multiple operating systems on a disk

· OS partitions ·

partition types

· OS partitions ·

partitions, number per disk

· OS partitions ·

ramdisks

· Ramdisks ·

used blocks

· Bitmap ·

viewed as block special files

· Disks and disk subsystems ·

Dosfsys

· The DOS Filesystem Manager ·

dot (directory link)

· Directory links ·

dot dot (directory link)

· Directory links ·

dragging windows across network links

· Multiple graphics drivers ·

driver processes

Dev.con

· The QNX console ·

Dev.par

· Parallel devices ·

Dev.ser

· Serial devices ·

drivers

· Device drivers ·

device drivers

· Device drivers ·

effects of adding new drivers

· Device drivers ·

network drivers

· Network drivers ·

dumper (utility)

· Termination ·

duplicating file descriptors

· Open control blocks ·

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