AUTOPUSH(1M)AUTOPUSH(1M)NAMEautopush - configures lists of automatically pushed STREAMS modules
SYNOPSISautopush-f filename
autopush-g -M major -m minor
autopush-r -M major -m minor
DESCRIPTION
The autopush command configures the list of modules to be automatically
pushed onto the stream when a device is opened. It can also be used to
remove a previous setting or get information on a setting.
OPTIONS
The following options are supported:
-f filename
Sets up the autopush configuration for each driver according to the
information stored in filename. An autopush file consists of lines
of four or more fields, separated by spaces as shown below:
major minor last-minor module1 module2 ... module8
The first field is a string that specifies the major device name,
as listed in the /kernel/drv directory. The next two fields are
integers that specify the minor device number and last-minor device
number. The fields following represent the names of modules. If
minor is −1, then all minor devices of a major driver specified by
major are configured, and the value for last-minor is ignored. If
last-minor is 0, then only a single minor device is configured. To
configure a range of minor devices for a particular major, minor
must be less than last-minor.
The remaining fields list the names of modules to be automatically
pushed onto the stream when opened, along with the position of an
optional anchor. The maximum number of modules that can be pushed
is eight. The modules are pushed in the order they are specified.
The optional special character sequence [anchor] indicates that a
STREAMS anchor should be placed on the stream at the module previ‐
ously specified in the list; it is an error to specify more than
one anchor or to have an anchor first in the list.
A nonzero exit status indicates that one or more of the lines in
the specified file failed to complete successfully.
-g
Gets the current configuration setting of a particular major and
minor device number specified with the -M and -m options respec‐
tively and displays the autopush modules associated with it. It
will also return the starting minor device number if the request
corresponds to a setting of a range (as described with the -f
option).
-m minor
Specifies the minor device number.
-M major
Specifies the major device number.
-r
Removes the previous configuration setting of the particular major
and minor device number specified with the -M and -m options
respectively. If the values of major and minor correspond to a pre‐
viously established setting of a range of minor devices, where
minor matches the first minor device number in the range, the con‐
figuration would be removed for the entire range.
EXIT STATUS
The following exit values are returned:
0
Successful completion.
non-zero
An error occurred.
EXAMPLES
Example 1 Using the autopush command.
The following example gets the current configuration settings for the
major and minor device numbers as indicated and displays the autopush
modules associated with them for the character-special device
/dev/term/a:
example# autopush-g -M 29 -m 0
Major Minor Lastminor Modules
29 0 1 ldterm ttcompat
FILES
/etc/iu.ap
SEE ALSOdladm(1M), ttymon(1M), attributes(5), ldterm(7M), sad(7D),
streamio(7I), ttcompat(7M)NOTES
The use of the autopush command is obsolete for networking data-links.
The preferred method of configuring a list of automatically pushed
STREAMS modules on a given networking data-link interface is the
dladm(1M)autopush link property.
Because network devices are self-cloning, the autopush command is inad‐
equate for networking devices. The granularity of the autopush com‐
mand's configuration is driver-wide, and not per-interface as one might
expect. Another reason not to use autopush is that administrators are
more familiar with the names of their network interfaces than with
device major and minor numbers. The dladm(1M) command allows the con‐
figuration using data-link interface names.
Feb 15, 2008 AUTOPUSH(1M)
