NAME

add_drv - add a new device driver to the system

SYNOPSIS

add_drv [ -b basedir ] [ -c class_name ] [ -i 'identify_name. . .' ] [ -m 'permission','. . .' ] driver_module

AVAILABILITY

SUNWcsu

DESCRIPTION

The add_drv command is used to inform the system about newly installed device drivers.

OPTIONS

-b basedir

Sets the path to the root directory of the diskless client. Used on the server to add_drv for a diskless client. The client machine must be rebooted to install the driver.

-c class_name

The driver being added to the system exports the class class_name.

-i 'identify_name'

A whitespace separated list of aliases for the driver driver_module.

-m 'permission'

Specify the file system permissions for device nodes created by the system on behalf of driver_module.

EXAMPLES

The following example adds the SUNW,example driver to the system, with an alias name of SUNW,alias. It assumes the driver has already been copied to /usr/kernel/drv.

example# add_drv --m '** 0666 bin bin','a 0644 root sys' \
        --i 'SUNW,alias' SUNW,example

Every minor node created by the system for the SUNW,example driver will have the permission 0666 ,and be owned by user bin in the group bin, except for the minor device a , which will be owned by root, group sys, and have a permission of 0644 .

The following example adds the driver to the client /export/root/sun1. The driver is installed and loaded when the client machine, sun1, is rebooted.

example# add_drv --m '** 0666 bin bin','a 0644 root sys' \
        --i 'SUNW,alias' -b /export/root/sun1 \
        SUNW,example

This second example produces the same result as the first, except the changes are on the diskless client, sun1, and the client must be rebooted for the driver to be installed.

EXIT CODES

add_drv returns 0 on success and 1 on failure.

FILES

/kernel/drv

boot device drivers, platform-dependent drivers.

/usr/kernel/drv

other drivers that could potentially be shared between platforms.

/etc/driver_aliases

driver aliases file.

/etc/driver_classes

driver classes file.

/etc/minor_perm

minor node permissions.

/etc/name_to_major

major number binding.

SEE ALSO

devlinks(1M), disks(1M), drvconfig(1M), kernel(1M), modinfo(1M), ports(1M), rem_drv(1M), tapes(1M), driver.conf(4), system(4), ddi_create_minor_node(9F)

Writing Device Drivers

NOTES

Aliases may require quoting (with double-quotes) if they contain numbers.

BUGS

add_drv will accept a full pathname for driver_module. However, the kernel does not use the full pathname; it only uses the final component and searches the internal module path for the module. This can lead to the kernel loading a different module than expected.

For this reason, it is not recommended that you use add_drv with a full pathname. See kernel(1M) for more information on the module path.