Class BoxGrinder::LinuxHelper
In: lib/boxgrinder-build/helpers/linux-helper.rb
lib/boxgrinder-build/helpers/linux-helper.rb
Parent: Object

Methods

Public Class methods

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 23
23:     def initialize(options = {})
24:       @log = options[:log] || LogHelper.new
25:     end

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 23
23:     def initialize(options = {})
24:       @log = options[:log] || LogHelper.new
25:     end

Public Instance methods

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 77
77:     def kernel_image_name(guestfs)
78:       guestfs.sh("ls -1 /boot | grep initramfs | wc -l").chomp.strip.to_i > 0 ? "initramfs" : "initrd"
79:     end

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 77
77:     def kernel_image_name(guestfs)
78:       guestfs.sh("ls -1 /boot | grep initramfs | wc -l").chomp.strip.to_i > 0 ? "initramfs" : "initrd"
79:     end

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 61
61:     def kernel_version(guestfs)
62:       kernel_versions = guestfs.ls("/lib/modules")
63:       version = kernel_versions.last
64: 
65:       if kernel_versions.size > 1
66:         kernel_versions.each do |v|
67:           if v.match(/PAE$/)
68:             version = v
69:             break
70:           end
71:         end
72:       end
73: 
74:       version
75:     end

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 61
61:     def kernel_version(guestfs)
62:       kernel_versions = guestfs.ls("/lib/modules")
63:       version = kernel_versions.last
64: 
65:       if kernel_versions.size > 1
66:         kernel_versions.each do |v|
67:           if v.match(/PAE$/)
68:             version = v
69:             break
70:           end
71:         end
72:       end
73: 
74:       version
75:     end

Returns valid array of sorted mount points

’/’, ’/home‘
=> [’/’, ’/home’]
‘swap’, ’/’, ’/home‘
=> [’/’, ’/home’, ‘swap’]
‘swap’, ’/’, ’/home’, ’/boot‘
=> [’/’, ’/boot’, ’/home’, ‘swap’]
’/tmp-eventlog’, ’/’, ’/ubrc’, ’/tmp-config‘
=> [’/’, ’/ubrc’, ’/tmp-config’, ’/tmp-eventlog’]

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 34
34:     def partition_mount_points(partitions)
35:       partitions.keys.sort do |a, b|
36:         a_count = a.count('/')
37:         b_count = b.count('/')
38: 
39:         if a_count > b_count
40:           v = 1
41:         else
42:           if a_count < b_count
43:             v = -1
44:           else
45:             if a.length == b.length
46:               v = a <=> b
47:             else
48:               v = a.length <=> b.length
49:             end
50:           end
51:         end
52: 
53:         # This forces having swap partition at the end of the disk
54:         v = 1 if a_count == 0
55:         v = -1 if b_count == 0
56: 
57:         v
58:       end
59:     end

Returns valid array of sorted mount points

’/’, ’/home‘
=> [’/’, ’/home’]
‘swap’, ’/’, ’/home‘
=> [’/’, ’/home’, ‘swap’]
‘swap’, ’/’, ’/home’, ’/boot‘
=> [’/’, ’/boot’, ’/home’, ‘swap’]
’/tmp-eventlog’, ’/’, ’/ubrc’, ’/tmp-config‘
=> [’/’, ’/ubrc’, ’/tmp-config’, ’/tmp-eventlog’]

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 34
34:     def partition_mount_points(partitions)
35:       partitions.keys.sort do |a, b|
36:         a_count = a.count('/')
37:         b_count = b.count('/')
38: 
39:         if a_count > b_count
40:           v = 1
41:         else
42:           if a_count < b_count
43:             v = -1
44:           else
45:             if a.length == b.length
46:               v = a <=> b
47:             else
48:               v = a.length <=> b.length
49:             end
50:           end
51:         end
52: 
53:         # This forces having swap partition at the end of the disk
54:         v = 1 if a_count == 0
55:         v = -1 if b_count == 0
56: 
57:         v
58:       end
59:     end

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 81
81:     def recreate_kernel_image(guestfs, modules = [])
82:       kernel_version = kernel_version(guestfs)
83:       kernel_image_name = kernel_image_name(guestfs)
84: 
85:       if guestfs.exists("/sbin/dracut") != 0
86:         command = "/sbin/dracut -f -v --add-drivers #{modules.join(' ')}"
87:       else
88:         drivers_argument = ""
89:         modules.each { |mod| drivers_argument << " --preload=#{mod}" }
90: 
91:         command = "/sbin/mkinitrd -f -v#{drivers_argument}"
92:       end
93: 
94:       @log.trace "Additional modules to preload in kernel: #{modules.join(', ')}"
95: 
96:       @log.debug "Recreating kernel image for #{kernel_version} kernel..."
97:       guestfs.sh("#{command} /boot/#{kernel_image_name}-#{kernel_version}.img #{kernel_version}")
98:       @log.debug "Kernel image recreated."
99:     end

[Source]

    # File lib/boxgrinder-build/helpers/linux-helper.rb, line 81
81:     def recreate_kernel_image(guestfs, modules = [])
82:       kernel_version = kernel_version(guestfs)
83:       kernel_image_name = kernel_image_name(guestfs)
84: 
85:       if guestfs.exists("/sbin/dracut") != 0
86:         command = "/sbin/dracut -f -v --add-drivers #{modules.join(' ')}"
87:       else
88:         drivers_argument = ""
89:         modules.each { |mod| drivers_argument << " --preload=#{mod}" }
90: 
91:         command = "/sbin/mkinitrd -f -v#{drivers_argument}"
92:       end
93: 
94:       @log.trace "Additional modules to preload in kernel: #{modules.join(', ')}"
95: 
96:       @log.debug "Recreating kernel image for #{kernel_version} kernel..."
97:       guestfs.sh("#{command} /boot/#{kernel_image_name}-#{kernel_version}.img #{kernel_version}")
98:       @log.debug "Kernel image recreated."
99:     end

[Validate]