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e5cb458e67
* Ship initrd.img in MSI using build-time generation via tar.exe Replace the install-time CreateInitrd/RemoveInitrd custom actions with a build-time step that generates initrd.img using the Windows built-in tar.exe (libarchive/bsdtar) and ships it directly in the MSI. The install-time approach had a race condition: wsl.exe could launch before the CreateInitrd custom action completed, causing ERROR_FILE_NOT_FOUND for initrd.img. Changes: - Add CMake custom command to generate initrd.img via tar.exe --format=newc - Add initrd.img as a regular file in the MSI tools component - Remove CreateInitrd/RemoveInitrd custom actions from WiX, DllMain, and wslinstall.def - Remove CreateCpioInitrd helper and its tests (no longer needed) - Update pipeline build targets to build initramfs instead of init * pr feedback * more pr feedback * switch to using a powershell script instead of tar.exe * powershell script feedback * hopefully final pr feedback --------- Co-authored-by: Ben Hillis <benhill@ntdev.microsoft.com>
68 lines
2.3 KiB
PowerShell
68 lines
2.3 KiB
PowerShell
# Copyright (c) Microsoft Corporation.
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# Licensed under the MIT License.
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# Creates a CPIO newc format initramfs archive containing a single file named "init"
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# with mode 0100755 (rwxr-xr-x), uid 0, gid 0.
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[CmdletBinding()]
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param (
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[Parameter(Mandatory)][string]$InputFile,
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[Parameter(Mandatory)][string]$OutputFile
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)
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$ErrorActionPreference = "Stop"
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Set-StrictMode -Version Latest
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function Write-Pad([System.IO.Stream]$Stream)
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{
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$remainder = $Stream.Position % 4
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if ($remainder -ne 0)
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{
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$pad = [byte[]]::new(4 - $remainder)
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$Stream.Write($pad, 0, $pad.Length)
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}
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}
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function Write-CpioEntry([System.IO.Stream]$Stream, [byte[]]$NameBytes, [byte[]]$FileData, [int]$Mode, [uint32]$Mtime)
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{
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$header = "070701" + # header magic
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"00000001" + # inode
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("{0:X8}" -f $Mode) + # mode
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"00000000" + # uid
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"00000000" + # gid
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"00000001" + # nlink
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("{0:X8}" -f $Mtime) + # mtime
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("{0:X8}" -f $FileData.Length) + # filesize
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"00000000" + # devmajor
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"00000000" + # devminor
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"00000000" + # rdevmajor
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"00000000" + # rdevminor
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("{0:X8}" -f $NameBytes.Length) + # namesize
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"00000000" # check
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$headerBytes = [System.Text.Encoding]::ASCII.GetBytes($header)
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$Stream.Write($headerBytes, 0, $headerBytes.Length)
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$Stream.Write($NameBytes, 0, $NameBytes.Length)
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Write-Pad $Stream
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if ($FileData.Length -gt 0)
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{
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$Stream.Write($FileData, 0, $FileData.Length)
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Write-Pad $Stream
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}
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}
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$data = [System.IO.File]::ReadAllBytes($InputFile)
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$name = [System.Text.Encoding]::ASCII.GetBytes("init`0")
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$mtime = [uint32][System.DateTimeOffset]::UtcNow.ToUnixTimeSeconds()
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$out = [System.IO.File]::Create($OutputFile)
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try
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{
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Write-CpioEntry $out $name $data 0x81ED $mtime # S_IFREG | 0755
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$trailer = [System.Text.Encoding]::ASCII.GetBytes("TRAILER!!!`0")
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Write-CpioEntry $out $trailer ([byte[]]::new(0)) 0 0
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}
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finally
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{
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$out.Close()
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}
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