Provided by: isdnutils-base_3.25+dfsg1-9ubuntu2_amd64 
NAME
isdnctrl - ISDN control device
SYNOPSIS
#include <linux/isdn.h>
DESCRIPTION
/dev/isdnctrl is a character device with major number 45 and minor numbers 64 to 127. It allows
controlling functionality of the Linux ISDN subsystem.
IOCTL FUNCTIONS
Currently, the following ioctl calls are supported:
IIOCNETAIF
Add an ISDN network interface.
This function adds a network interface to the kernel's device table. This interface can be used
just like normal eth interfaces.
Argument:
arg should point to a zero terminated string of max. 10 characters. if arg is NULL, the
kernel assigns a name.
Return:
On success, the name of the new interface is copied to arg. and the call returns 0. On
failure, an error code is returned.
IIOCNETASL
Create a slave interface.
Creates a slave interface for RAW-device channel-bundling. These devices behave like network-
interfaces, execpt they are invisible to user. Only ISDN parameters can be controlled, but no IP-
parameters. IP-parameters are inherited from the corresponding master-device.
Argument:
arg should point to a zero terminated string of max. 21 characters containing two comma-
separated names. The first part is the name of an existing ISDN network device, which will
be master. The second part will be the name of the new slave interface.
Return:
On success, the name of the new interface is copied to arg. and the call returns 0. On
failure, an error code is returned.
IIOCNETDIF
Delete a network-interface.
This call deletes an existing ISDN network interface.
Argument:
arg should point to a zero terminated string of max. 10 characters naming an existing
interface which will be deleted. If the interface is a master interface, all it's slave-
interfaces will be deleted also.
Return:
On success, the call returns 0. On failure, an error code is returned.
IIOCNETSCF
Set configurable parameters of an ISDN network interface.
This call replaces all ISDN related parameters of an interface by the parameters given.
Argument:
arg should point to a struct isdn_net_ioctl_cfg (defined in linux/isdn.h)
Return:
On success, the call returns 0. On failure, an error code is returned.
IIOCNETGCF
Get configurable parameters of an ISDN network interface.
This call returns all ISDN related parameters of an interface.
Argument:
arg should point to a struct isdn_net_ioctl_cfg (defined in linux/isdn.h) which will be
filled by the current setup.
Return:
On success, the call returns 0 and the interface-setup is copied to *arg. On failure, an
error code is returned.
IIOCNETANM
Add a phone number to an ISDN network interface.
This call adds a phone number to an existing network interface.
Argument:
arg should point to a struct isdn_net_ioctl_phone which contains necessary information.
Return:
On success, the call returns 0 and the phone number is added to either outgoing or incoming
number list. On failure, an error code is returned.
IIOCNETDNM
Delete a phone number from an ISDN network interface.
This call deletes a phone number from an existing network interface.
Argument:
arg should point to a struct isdn_net_ioctl_phone which contains necessary information.
Return:
On success, the call returns 0 and the phone number is deleted from either outgoing or
incoming number list. On failure, an error code is returned.
IIOCNETGNM
Get list of phone numbers from an ISDN network interface.
This call returns the list of phone numbers associated to an existing network interface.
Argument:
arg should point to a union of struct isdn_net_ioctl_phone and a buffer, large enough to
hold a concatenated list of strings containing the phone numbers.
Return:
On success, the call returns 0 and the list of phone numbers is returned as a space-
separated list of number-strings terminated by a NULL byte.
IIOCNETDIL
Trigger dialing of an ISDN network interface.
This call initiates dialing of an ISDN network interface, if it is not connected. Normally, this
ioctl is not needed, because ISDN network interface perform dial on demand by default.
Argument:
arg should point to a zero terminated string of max. 10 characters naming the desired
interface.
Return:
On success, the call returns 0 and the interface starts dialing.
IIOCNETHUP
Hangup an ISDN network interface.
This call initiates hangup of an ISDN network interface, if it is connected.
Argument:
arg should point to a zero terminated string of max. 10 characters naming the desired
interface.
Return:
On success, the call returns 0 and the interface hangs up.
IIOCNETALN
Add a link of an MPP-configured ISDN network interface.
This call initiates dialing of a Multilink-PPP slave ISDN network interface, if it is not
connected.
Argument:
arg should point to a zero terminated string of max. 10 characters naming the desired
interface.
Return:
On success, the call returns 0 and the interface starts dialing.
IIOCNETDLN
Hangup an MPP-configured ISDN network interface.
This call initiates hangup of an Multilink-PPP ISDN network interface, if it is connected.
Argument:
arg should point to a zero terminated string of max. 10 characters naming the desired
interface.
Return:
On success, the call returns 0 and the interface hangs up.
IIOCNETARU
Add a timeout rule to an ISDN network interface.
This call adds a timeout rule to an existing interface.
Argument:
arg should point to a struct isdn_ioctl_timeout_rule containing the necessary parameters.
Return:
On success, the call returns 0 and the rule is added to the rule list of the interface.
IIOCNETDRU
Delete a timeout rule from an ISDN network interface.
This call deletes a timeout rule from an existing interface.
Argument:
arg should point to a struct isdn_ioctl_timeout_rule containing the necessary parameters.
Return:
On success, the call returns 0 and the rule is deleted from the rule list of the interface.
IIOCNETGRU
Get a timeout rule from an ISDN network interface.
This call returns a timeout rule from an existing interface.
Argument:
arg should point to a struct isdn_ioctl_timeout_rule containing the necessary parameters.
Return:
On success, the call returns 0 and the struct is filled from the rule list of the
interface.
IIOCNETBUD
Handle budget accounting of an ISDN network interface.
Argument and Return:
to be defined.
IIOCSETVER
Set verbosity of link level.
Argument:
arg is an integer, defining the new verbose value.
Return:
This call always returns 0.
IIOCSETGST
Set global stop flag of link level.
Argument:
arg is an integer, defining the new stop flag value (0 or !0).
Return:
This call always returns 0.
IIOCSETBRJ
Set busreject flag of a lowlevel driver.
Argument:
arg should point to an struct isdn_ioctl_struct containing the driver's ID and the value of
the busreject flag.
Return:
On success, the call returns 0 and the busreject flag of the selected driver is set
according the given parameter.
IIOCSIGPRF
Enable signaling on change of modem profiles.
With this call, the calling process is registered to receive a SIGIO on every change of any
register of any ttyI. Thus it can read register settings and save them to a file. The calling
process has to keep the device open in order to receive notifications. As soon as it closes the
device, registration is deleted.
Argument:
none
Return:
This call always returns 0.
IIOCGETPRF
Get all modem register settings.
With this call, all modem registers of all ttyI devices can be read.
Argument:
arg should point to a buffer of length ( ISDN_MODEM_ANZREG + ISDN_MSNLEN ) *
ISDN_MAX_CHANNELS.
Return:
On return, the provided buffer is filled with the register values.
IIOCSETPRF
Set all modem register settings.
With this call, all modem registers of all ttyI devices can be written.
Argument:
arg should point to a buffer of length ( ISDN_MODEM_ANZREG + ISDN_MSNLEN ) *
ISDN_MAX_CHANNELS. filled with the values of all modem registers.
Return:
On return, the modem registers are set from the contents of the provided buffer.
IIOCSETMAP
Set Mapping table.
This call is used to set EAZ/MSN mapping of a lowlevel driver.
Argument:
arg should point to a struct isdn_ioctl_struct containing the necessary parameters.
Return:
On success, the mapping table is set from the given parameters an the call returns 0.
IIOCGETMAP
Get Mapping table.
This call is used to get EAZ/MSN mapping of a lowlevel driver.
Argument:
arg should point to a struct isdn_ioctl_struct containing the necessary parameters.
Return:
On success, the current mapping table of the given driver is returned and the call returns
0.
IIOCDRVCTL
Lowlevel driver ioctl.
This call is used for controlling various lowlevel drivers. The ioctl-code for this command is
assembled by adding IIOCDRVCTL (128) and the desired driver ioctl-code. Therefore, a lowlevel
driver can understand a maximum of 127 different ioctls.
Argument:
arg should point to a struct isdn_ioctl_struct containing the necessary parameters,
especially the driver-Id must be filled correctly. The arg component inside
isdn_ioctl_struct is handed down to the driver's ioctl function. Its meaning is not defined
here and depends on the lowlevel driver. See documentation for the various lewlevel drivers
for information about driver- specific ioctl.
Return:
The return code depends on the driver's ioctl function. Usually, 0 means no error.
AUTHOR
Fritz Elfert <fritz@isdn4linux.de>
SEE ALSO
isdninfo(4), icnctrl(4).