Intro – introduction to special files
This section describes various device and network interfaces available on the system.
The types of interfaces described include character and block devices, STREAMS
modules, network protocols, file systems, and ioctl requests for driver subsystems and
classes.
This section contains the following major collections:
(7D) The system provides drivers for a variety of hardware devices, such as
disk, magnetic tapes, serial communication lines, mice, and frame buffers,
as well as virtual devices such as pseudo-terminals and windows.
This section describes special files that refer to specific hardware
peripherals and device drivers. STREAMS device drivers are also
described. Characteristics of both the hardware device and the
corresponding device driver are discussed where applicable.
An application accesses a device through that device’s special file. This
section specifies the device special file to be used to access the device as
well as application programming interface (API) information relevant to
the use of the device driver.
All device special files are located under the /devices directory. The
/devices directory hierarchy attempts to mirror the hierarchy of system
busses, controllers, and devices configured on the system. Logical device
names for special files in /devices are located under the /dev directory.
Although not every special file under /devices will have a corresponding
logical entry under /dev, whenever possible, an application should
reference a device using the logical name for the device. Logical device
names are listed in the FILES section of the page for the device in
question.
This section also describes driver configuration where applicable. Many
device drivers have a driver configuration file of the form
driver_name.conf associated with them (see driver.conf(4)). The
configuration information stored in the driver configuration file is used to
configure the driver and the device. Driver configuration files are located in
/kernel/drv and /usr/kernel/drv. Driver configuration files for
platform dependent drivers are located in /platform/‘uname
-i‘/kernel/drv where ‘uname -i‘ is the output of the uname(1)
command with the -i option.
Some driver configuration files may contain user configurable properties.
Changes in a driver’s configuration file will not take effect until the system
is rebooted or the driver has been removed and re-added (see
rem_drv(1M) and add_drv(1M)).
(7FS) This section describes the programmatic interface for several file systems
supported by SunOS.
Intro(7)
NAME
DESCRIPTION
18 man pages section 7: Device and Network Interfaces • Last Revised 29 Sep 1994
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