Assorted grammar and other mechanical fixes.

PR:		32941
Submitted by:	<setantae@submonkey.net>
This commit is contained in:
Dima Dorfman 2002-01-07 06:26:37 +00:00
parent bfe4f323ec
commit 4057c9f019
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=88986

View File

@ -32,7 +32,7 @@
.Nm intro
.Nd introduction to devices and device drivers
.Sh DESCRIPTION
This section contains information related to devices, device driver
This section contains information related to devices, device drivers
and miscellaneous hardware.
.Ss The device abstraction
Device is a term used mostly for hardware-related stuff that belongs
@ -60,7 +60,7 @@ and
.Xr mmap 2 .
Not all drivers implement all system calls, for example, calling
.Xr mmap 2
on a terminal devices is likely to be not useful at all.
on terminal devices is likely to be not useful at all.
.Ss Accessing Devices
Most of the devices in a unix-like operating system are accessed
through so-called
@ -95,7 +95,7 @@ Some devices come in two flavors:
.Em block
and
.Em character
devices, or by a better name, buffered and unbuffered
devices, or to use better terms, buffered and unbuffered
(raw)
devices. The traditional names are reflected by the letters
.Ql b
@ -106,7 +106,7 @@ as the file type identification in the output of
Buffered devices are being accessed through the buffer cache of the
operating system, and they are solely intended to layer a file system
on top of them. They are normally implemented for disks and disk-like
devices only, for historical reasons also for tape devices.
devices only and, for historical reasons, for tape devices.
.Pp
Raw devices are available for all drivers, including those that also
implement a buffered device. For the latter group of devices, the
@ -126,8 +126,8 @@ to
floppy disks
(i.e. those used like tapes).
.Pp
Access restrictions to device nodes are usually subject of the regular
file permissions of the device node entry, instead of being implied
Access restrictions to device nodes are usually subject to the regular
file permissions of the device node entry, instead of being enforced
directly by the drivers in the kernel.
.Ss Drivers without device nodes
Drivers for network devices do not use device nodes in order to be