| Current Path : /usr/share/ruby/vendor_ruby/facter/ |
Linux gator3171.hostgator.com 4.19.286-203.ELK.el7.x86_64 #1 SMP Wed Jun 14 04:33:55 CDT 2023 x86_64 |
| Current File : //usr/share/ruby/vendor_ruby/facter/blockdevices.rb |
# Fact: blockdevice_<devicename>_size
#
# Purpose:
# Return the size of a block device in bytes.
#
# Resolution:
# Parse the contents of `/sys/block/<device>/size` to receive the size (multiplying by 512 to correct for blocks-to-bytes).
#
# Caveats:
# Only supports Linux 2.6+ at this time, due to the reliance on sysfs.
#
# Fact: blockdevice_<devicename>_vendor
#
# Purpose:
# Return the vendor name of block devices attached to the system.
#
# Resolution:
# Parse the contents of `/sys/block/<device>/device/vendor` to retrieve the vendor for a device.
#
# Caveats:
# Only supports Linux 2.6+ at this time, due to the reliance on sysfs.
#
# Fact: blockdevice_<devicename>_model
#
# Purpose:
# Return the model name of block devices attached to the system.
#
# Resolution:
# Parse the contents of `/sys/block/<device>/device/model` to retrieve the model name/number for a device.
#
# Caveats:
# Only supports Linux 2.6+ at this time, due to the reliance on sysfs.
#
# Fact: blockdevices
#
# Purpose:
# Return a comma separated list of block devices.
#
# Resolution:
# Retrieve the block devices that were identified and iterated over in the creation of the blockdevice_ facts.
#
# Caveats:
# Block devices must have been identified using sysfs information.
#
# Author: Jason Gill <jasongill@gmail.com>
require 'facter'
# Only Linux 2.6+ kernels support sysfs which is required to easily get device details
if Facter.value(:kernel) == 'Linux'
sysfs_block_directory = '/sys/block/'
blockdevices = []
# This should prevent any non-2.6 kernels or odd machines without sysfs support from being investigated further
if File.exist?(sysfs_block_directory)
# Iterate over each file in the /sys/block/ directory and skip ones that do not have a device subdirectory
Dir.entries(sysfs_block_directory).each do |device|
sysfs_device_directory = sysfs_block_directory + device + "/device"
next unless File.exist?(sysfs_device_directory)
# Add the device to the blockdevices list, which is returned as it's own fact later on
blockdevices << device
sizefile = sysfs_block_directory + device + "/size"
vendorfile = sysfs_device_directory + "/vendor"
modelfile = sysfs_device_directory + "/model"
if File.exist?(sizefile)
Facter.add("blockdevice_#{device}_size".to_sym) do
setcode { IO.read(sizefile).strip.to_i * 512 }
end
end
if File.exist?(vendorfile)
Facter.add("blockdevice_#{device}_vendor".to_sym) do
setcode { IO.read(vendorfile).strip }
end
end
if File.exist?(modelfile)
Facter.add("blockdevice_#{device}_model".to_sym) do
setcode { IO.read(modelfile).strip }
end
end
end
end
# Return a comma-seperated list of block devices found
unless blockdevices.empty?
Facter.add(:blockdevices) do
setcode { blockdevices.sort.join(',') }
end
end
end