NAME
Solaris::DeviceTree::OBP - Utility functions for OBP access
SYNOPSIS
Value access:
$tree = Solaris::DeviceTree::Libdevinfo->new;
$aliases = obp_aliases($tree);
my $disk = $aliases->{'disk'};
$chosen_boot_device = obp_chosen_boot_device($tree);
@boot_devices = obp_boot_devices($tree);
@diag_devices = obp_diag_devices($tree);Path transformation:
$resolved_path = obp_resolve_path( aliases => $aliases, path => "disk:c" );DESCRIPTION
The Solaris::DeviceTree::OBP module implements functions for manipulating OBP pathes according to IEEE 1275. For most of the functions you need to specify a devicetree containing PROM property nodes, which are most likely to find in an Solaris::DeviceTree::Libdevinfo tree.
EXPORT
The following functions are exported on demand:
obp_resolve_path
This functions transforms the specified path in an alias-free path using the path resolution procedure described in 1275.pdf - 4.3.1 Path resolution procedure according to the specified reference to an alias mapping.
aliases
This method returns a reference to a hash which maps all aliases to their corresponding values.
obp_chosen_boot_device
This method returns the device from which the system has most recently booted.
obp_boot_devices
This method returns a list with all boot devices entered in the OBP.
obp_diag_devices
This method returns a list with all diag devices entered in the OBP.
The following export tags are defined:
- boot
-
L</obp_chosen_boot_device>, L</obp_boot_devices>, L</obp_diag_devices>. - alias
-
L</obp_aliases>. - path
-
L</obp_resolve_path>.
EXAMPLES
In the following example the resolved physical pathname of the device last booted from is printed:
use Solaris::DeviceTree::OBP;
use Solaris::DeviceTree::Libdevinfo;
my $tree = Solaris::DeviceTree::Libdevinfo->new;
$bootpath = $tree->find_prop( devfs_path => "/chosen", prom_prop_name => "bootpath" );
$resolved_path = obp_resolve_path( aliases => $tree->aliases, path => $bootpath->string );
print "Last boot from $resolved_path\n";AUTHOR
Dagobert Michelsen, <dam@baltic-online.de>
SEE ALSO
Open Firmware Homepage http://playground.sun.com/1275/home.html, eeprom(1m).
1 POD Error
The following errors were encountered while parsing the POD:
- Around line 236:
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