update_drv(1M) System Administration Commands update_drv(1M)NAMEupdate_drv - modify device driver attributes
SYNOPSISupdate_drv [-f | -v] driver_module
update_drv [-b basedir] [-f | -v] -a [-m 'permission']
[-i 'identify-name'] [-P 'privilege'] [-p 'policy'] driver_module
update_drv [-b basedir] [-f | -v] -d [-m 'permission']
[-i 'identify-name'] [-P 'privilege'] [-p 'policy'] driver_module
DESCRIPTION
The update_drv command informs the system about attribute changes to an
installed device driver. It can be used to re-read the driver.conf(4)
file, or to add, modify, or delete a driver's minor node permissions or
aliases.
Without options, update_drv reloads the driver.conf file.
Upon successfully updating the aliases, the driver binding takes effect
upon reconfig boot or hotplug of the device.
Upon successfully updating the permissions, only the new driver minor
nodes get created with the modified set of file permissions. Existing
driver minor nodes do not get modified.
OPTIONS
The following options are supported:
-a Add a permission, aliases, privilege or policy
entry.
With the -a option specified, a permission entry
(using the -m option), or a driver's aliases
entry (using the -i option), a device privilege
(using the -P option) or a a device policy (using
the -p option), can be added or updated. If a
matching minor node permissions entry is encoun‐
tered (having the same driver name and the minor
node), it is replaced. If a matching aliases
entry is encountered (having a different driver
name and the same alias), an error is reported.
The -a and -d options are mutually exclusive.
-b basedir Installs or modifies the driver on the system
with a root directory of basedir rather than
installing on the system executing update_drv.
Note -
The root file system of any non-global zones
must not be referenced with the -b option.
Doing so might damage the global zone's file
system, might compromise the security of the
global zone, and might damage the non-global
zone's file system. See zones(5).
-d Delete a permission, aliases, privilege or policy
entry.
The -m permission, -i identify-name, -P privilege
or the -p policy option needs to be specified
with the -d option.
The -d and -a options are mutually exclusive.
If the entry doesn't exist update_drv returns an
error.
-f Force the system to reread the driver.conf file
even if the driver module cannot be unloaded. See
NOTES section for details.
-i 'identify-name' A white-space separated list of aliases for the
driver. If -a or -d option is not specified then
this option is ignored. The identify-name string
is mandatory. If all aliases need to be removed,
rem_drv(1M) is recommended.
-m 'permission' Specify a white-space separated list of file sys‐
tem permissions for the device node of the device
driver. If -a or -d option is not specified then,
this option is ignored. The permission string is
mandatory.
-p 'policy' With the -a option, policy is a white-space sepa‐
rated list of complete device policies. For the
-d option, policy is a white space separated list
of minor device specifications. The minor device
specifications are matched exactly against the
entries in /etc/security/device_policy, that is.,
no wildcard matching is performed.
-P 'privilege' With the -a option, privilege is a comma sepa‐
rated list of additional driver privileges. For
the -d option, privilege is a single privilege.
The privileges are added to or removed from the
/etc/security/extra_privs file.
-v Verbose.
EXAMPLES
Example 1 Adding or Modifying an Existing Minor Permissions Entry
The following command adds or modifies the exisitng minor permissions
entry of the clone driver:
example# update_drv-a -m 'llc1 777 joe staff' clone
Example 2 Removing All Minor Permissions Entries
The following command removes all minor permission entries of the
usbprn driver, the USB printer driver:
example# update_drv-d -m '* 0666 root sys' usbprn
Example 3 Adding a Driver Aliases Entry
The following command adds a driver aliases entry of the ugen driver
with the identity string of usb459,20:
example# update_drv-a -i '"usb459,20"' ugen
Example 4 Re-reading the driver.conf File For the ohci Driver
The following command re-reads the driver.conf(4) file.
example# update_drv ohci
Example 5 Requiring a Self-defined Privilege to Open a tcp Socket
The following command requires a self-defined privilege to open a tcp
socket:
example# update_drv-a -P net_tcp -p \
'write_priv_set=net_tcp read_priv_set=net_tcp' tcp
Example 6 Establishing a Path-oriented Alias
The following command establishes a path-oriented alias to force a spe‐
cific driver, qlt, to be used for a particular device path:
example# update_drv-a -i '"/pci@8,600000/SUNW,qlc@4"' qlt
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWcsu │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOadd_drv(1M), modunload(1M), rem_drv(1M), driver.conf(4), attributes(5),
privileges(5)NOTES
If -a or -d options are specified, update_drv does not re-read the
driver.conf file.
A forced update of the driver.conf file reloads the driver.conf file
without reloading the driver binary module. In this case, devices which
can not be detached reference driver global properties from the old
driver.conf file, while the remaining driver instances reference global
properties in the new driver.conf file.
It is possible to add an alias , which changes the driver binding of a
device already being managed by a different driver. A force update with
the -a option tries to bind to the new driver and report error if it
cannot. If you specify more than one of the -m, -i, -P or -p options, a
force flag tries to modify aliases or permissions. This is done even if
the other operation fails and vice-versa. A force update with the -d
option tries to delete entries and report the error if it cannot.
SunOS 5.10 3 May 2007 update_drv(1M)
