PwSh.Fw.OS

1.3.1-pre00

Libraries/Bootloader/Includes/Bootloader.Grub2.psm1

<#
.SYNOPSIS
Search for a grub configuration

.DESCRIPTION
Search into local partition for a grub.cfg file.
Default search for a "grub.cfg" file. If config name is overriden, use -Filename to search for custom filename.

.EXAMPLE
Find-BootloaderGrub2Cfg -Path "/boot"

.EXAMPLE
Find-BootloaderGrub2Cfg -Path "/boot" -Filename "mygrub.cfg"

.NOTES
General notes
#>
function Find-BootloaderGrub2Cfg {
    [CmdletBinding()]
    [OutputType([String])]
    Param (
        # Path to start search
        [Parameter(Mandatory = $true, ValueFromPipeLine = $true)][string]$Path,
        # Custom filename to search for
        [Parameter(Mandatory = $false, ValueFromPipeLine = $false)][string]$Filename = "grub.cfg"
    )
    Begin {
        Write-EnterFunction
    }

    Process {
        $grubcfg = Get-ChildItem -Path $Path $Filename -Recurse
        return ${grubcfg}?.fullname
    }

    End {
        Write-LeaveFunction
    }
}
function Get-BootloaderGrub2DefaultBoot {
    [CmdletBinding()]
    [OutputType([String])]
    Param (
        [Alias('ConfigFile')]
        [Parameter(Mandatory = $false, ValueFromPipeLine = $false)][string]$Grub2Cfg = "/boot/Grub2/Grub2.cfg"
    )
    Begin {
        Write-EnterFunction
    }

    Process {
        $rc = (Get-Content $Grub2Cfg | select-string "^LABEL") | ForEach-Object { $_ -match "^LABEL\s*(?<label>\w+)" }
        if ($rc) {
            return $Matches.label
        } else {
            return $null
        }
    }

    End {
        Write-LeaveFunction
    }
}

function Set-BootloaderGrub2DefaultBoot {
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    Param (
        [Alias('ConfigFile')]
        [Parameter(Mandatory = $false, ValueFromPipeLine = $false)][string]$Grub2Cfg = "/boot/Grub2/Grub2.cfg",
        [Parameter(Mandatory = $true, ValueFromPipeLine = $false)][string]$label
    )
    Begin {
        Write-EnterFunction
    }

    Process {
        $Grub2 = (Get-Content $Grub2Cfg -Raw) -replace "^DEFAULT .*", "DEFAULT $label"
        $Grub2 | Out-File $Grub2Cfg
        return $?
    }

    End {
        Write-LeaveFunction
    }
}