Module: LinuxStat::Mounts

Defined in:
lib/linux_stat/mounts.rb

Class Method Summary collapse

Class Method Details

.device_stat(dev = root) ⇒ Object

device_stat(dev = root)

Not to confuse this method with devices_stat() which shows all devices

It shows all the block devices corresponding to mount points and data from LinuxStat::FS.stat(arg)

For example:

LinuxStat::Mounts.device_stat('/dev/sda2')

=> {"/dev/sda2"=>{:mountpoint=>"/", :total=>119981191168, :free=>35298562048, :available=>35298562048, :used=>84682629120, :percent_used=>70.58, :percent_free=>29.42, :percent_available=>29.42}}

The return type is Hash. But if the status isn’t available, it will return an empty Hash.



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# File 'lib/linux_stat/mounts.rb', line 179

def device_stat(dev = root)
	# Code duplication is fine if it gives maximum performance
	m = {}
	mounts.each do |x|
		x.strip!

		unless x.empty?
			_x = x.split
			next if _x[0] != dev

			total, free, available, used = fs_info(_x[1])

			m.merge!({
				mountpoint: _x[1],

				total: total,
				free: free,
				available: available,
				used: used,

				percent_used: used.*(100).fdiv(total).round(2),
				percent_free: free.*(100).fdiv(total).round(2),
				percent_available: available.*(100).fdiv(total).round(2),
			})

			break
		end
	end
	m
end

.devices_stat ⇒ Object

devices_stat

Not to confuse this method with device_stat(dev) which shows only one device’s info

It shows all the block devices corresponding to mount points and data from LinuxStat::FS.stat(arg)

For example:

LinuxStat::Mounts.devices_stat

=> {"proc"=>{:mountpoint=>"/proc", :total=>0, :free=>0, :available=>0, :used=>0, :percent_used=>NaN, :percent_free=>NaN, :percent_available=>NaN}, "/dev/sdb1"=>{:mountpoint=>"/run/media/sourav/5c2b7af7-d4c3-4ab4-a035-06d18ffc8e6f", :total=>31466008576, :free=>2693931008, :available=>2693931008, :used=>28772077568, :percent_used=>91.44, :percent_free=>8.56, :percent_available=>8.56}}

The return type is Hash. But if the status isn’t available, it will return an empty Hash.



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# File 'lib/linux_stat/mounts.rb', line 137

def devices_stat
	# Code duplication is fine if it gives maximum performance
	m = {}
	mounts.each do |x|
		x.strip!

		unless x.empty?
			_x = x.split
			total, free, available, used = fs_info(_x[1])

			m.merge!(_x[0] => {
				mountpoint: _x[1],

				total: total,
				free: free,
				available: available,
				used: used,

				percent_used: used.*(100).fdiv(total).round(2),
				percent_free: free.*(100).fdiv(total).round(2),
				percent_available: available.*(100).fdiv(total).round(2),
			})
		end
	end
	m
end

.list ⇒ Object

Reads /proc/mounts and returns the output splitted with n.

In other words, it’s same as running IO.readlines(‘/proc/mounts’).each(&:strip!)

It returns an Array. If the info isn’t available or /proc/mounts is not readable, it will return an empty Array.



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# File 'lib/linux_stat/mounts.rb', line 11

def list
	mounts
end

.list_devices ⇒ Object

Reads /proc/mounts and returns list of devices.

It returns an Array. If the info isn’t available or /proc/mounts is not readable, it will return an empty Array.



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# File 'lib/linux_stat/mounts.rb', line 20

def list_devices
	mounts.map { |x| x.split(?\s.freeze).first }
end

.list_devices_mount_point ⇒ Object

list_devices_mount_point()

It shows all the block devices corresponding to mount points.

For example:

LinuxStat::Mounts.list_devices_mount_point

=> {"proc"=>"/proc", "sys"=>"/sys", "dev"=>"/dev", "run"=>"/run", "/dev/sda2"=>"/", "securityfs"=>"/sys/kernel/security", "tmpfs"=>"/run/user/1000", "devpts"=>"/dev/pts", "cgroup2"=>"/sys/fs/cgroup/unified", "cgroup"=>"/sys/fs/cgroup/perf_event", "pstore"=>"/sys/fs/pstore", "none"=>"/sys/fs/bpf", "systemd-1"=>"/proc/sys/fs/binfmt_misc", "debugfs"=>"/sys/kernel/debug", "mqueue"=>"/dev/mqueue", "hugetlbfs"=>"/dev/hugepages", "tracefs"=>"/sys/kernel/tracing", "configfs"=>"/sys/kernel/config", "fusectl"=>"/sys/fs/fuse/connections", "gvfsd-fuse"=>"/run/user/1000/gvfs", "/dev/sdb1"=>"/run/media/sourav/5c2b7af7-d4c3-4ab4-a035-06d18ffc8e6f", "binfmt_misc"=>"/proc/sys/fs/binfmt_misc"}

The return type is Hash. But if the status isn’t available or the device isn’t mounted, it will return an empty String.



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# File 'lib/linux_stat/mounts.rb', line 109

def list_devices_mount_point
	m = {}
	mounts.each do |x|
		x.strip!

		unless x.empty?
			_x = x.split
			m.merge!(_x[0] => _x[1])
		end
	end
	m
end

.mount_point(dev = root) ⇒ Object

mount_point(dev = root)

Where device = block device.

The default argument is the root block device.

It helps you find the mountpoint of a block device. For example:

LinuxStat::Mounts.mount_point('/dev/sdb1')

=> "/run/media/sourav/5c2b7af7-d4c3-4ab4-a035-06d18ffc8e6f"

The return type is String. But if the status isn’t available or the device isn’t mounted, it will return an empty String.



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# File 'lib/linux_stat/mounts.rb', line 80

def mount_point(dev = root)
	m = ''
	mounts.each do |x|
		x.strip!

		unless x.empty?
			_x = x.split
			if _x[0] == dev
				m.replace(_x[1])
				break
			end
		end
	end
	m
end

.root ⇒ Object

Reads /proc/mounts and returns partition name of the device mounted at /.

It returns a String. But if the info isn’t available or /proc/mounts is not readable, it will return an empty frozen String.



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# File 'lib/linux_stat/mounts.rb', line 29

def root
	find_root[0].to_s
end

.root_fs ⇒ Object

Reads /proc/mounts and returns the file system of the device mounted at /.

It returns a String. But if the info isn’t available or /proc/mounts is not readable, it will return an empty frozen String.



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# File 'lib/linux_stat/mounts.rb', line 38

def root_fs
	find_root[2].to_s
end

.root_mount_options ⇒ Object

Reads /proc/mounts and returns the options used for mounting /.

It returns a String. But if the info isn’t available or /proc/mounts is not readable, it will return an empty frozen string.



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# File 'lib/linux_stat/mounts.rb', line 47

def root_mount_options
	find_root[3].to_s
end

.tmpfs ⇒ Object

Reads /proc/mounts and finds all tmpfs.

It returns a Hash But if the info isn’t available or /proc/mounts is not readable, it will return an empty Hash.



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# File 'lib/linux_stat/mounts.rb', line 56

def tmpfs
	ret = {}
	mounts.each { |x|
		ret.merge!({x.split[1] => x}) if x.start_with?('tmpfs '.freeze)
	}
	ret
end