[pve-devel] [PATCH installer v2 0/3] properly filter out all installer-related kernel arguments

[pve-devel] [PATCH installer v2 0/3] properly filter out all installer-related kernel arguments

[Christoph Heiss]

Friedrich recently reported that when installing using the
auto-installer, the kernel commandline does not get cleaned up properly.

For building/testing on current master, [0] needs to be applied
beforehand to fix a test failure.

[0] https://lists.proxmox.com/pipermail/pve-devel/2024-July/064815.html

history
=======

v1: https://lists.proxmox.com/pipermail/pve-devel/2024-August/065070.html

Notable changes v1 -> v2:
  * parse whole line by splitting and then filtering out individually
  * add some tests

git diffstat
============

Christoph Heiss (3):
  low level: config: filter out kernel cmdline on word boundaries
  low level: config: filter out all installer-related kernel arguments
  test: add test for kernel commandline parsing

 Proxmox/Install/Config.pm    | 11 ++++---
 test/Makefile                |  7 +++-
 test/parse-kernel-cmdline.pl | 62 ++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 5 deletions(-)
 create mode 100755 test/parse-kernel-cmdline.pl

-- 
2.45.2



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[pve-devel] [PATCH installer v2 1/3] low level: config: filter out kernel cmdline on word boundaries

[Christoph Heiss]

Otherwise, substrings might get replaced, e.g. the replacement
`proxmox-start-auto-installer` -> `pxmox-start-auto-installer` would be
done.

Fixes: a02a78a ("fix #4747: pass kernel cmdline parameters to target system")
Suggested-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
Changes v1 -> v2:
  * split commandline along whitespace and filter individually, to avoid
    problems with regexes and word boundaries

 Proxmox/Install/Config.pm | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Proxmox/Install/Config.pm b/Proxmox/Install/Config.pm
index ae70093..7378d86 100644
--- a/Proxmox/Install/Config.pm
+++ b/Proxmox/Install/Config.pm
@@ -43,10 +43,12 @@ my sub parse_kernel_cmdline {
 	}
     }
 
-    $cmdline =~ s/(?:BOOT_IMAGE|root|ramdisk_size|splash|vga)=\S+\s?//gi;
-    $cmdline =~ s/ro|rw|quiet|proxdebug|proxtui|nomodeset//gi;
+    my @filtered = grep {
+	$_ !~ m/^(BOOT_IMAGE|root|ramdisk_size|splash|vga)=\S+$/ &&
+	$_ !~ m/^(ro|rw|quiet|proxdebug|proxtui|nomodeset)$/
+    } split(/\s+/, $cmdline);
 
-    $cfg->{target_cmdline}= $cmdline;
+    $cfg->{target_cmdline} = join(' ', @filtered);
 
     return $cfg;
 }
-- 
2.45.2



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[pve-devel] [PATCH installer v2 2/3] low level: config: filter out all installer-related kernel arguments

[Christoph Heiss]

For one, include the auto-installer arguments, which weren't filtered
out before. Secondely, include the aliases as introduced in [0].

[0] de7f779 ("unconfigured: accept more telling boot cmdline option names")

Reported-by: Friedrich Weber <f.weber@proxmox.com>
Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
Changes v1 -> v2:
  * added parentheses around 'or'-expression
  * adapted to new filtering

 Proxmox/Install/Config.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Proxmox/Install/Config.pm b/Proxmox/Install/Config.pm
index 7378d86..607f0bf 100644
--- a/Proxmox/Install/Config.pm
+++ b/Proxmox/Install/Config.pm
@@ -45,7 +45,8 @@ my sub parse_kernel_cmdline {
 
     my @filtered = grep {
 	$_ !~ m/^(BOOT_IMAGE|root|ramdisk_size|splash|vga)=\S+$/ &&
-	$_ !~ m/^(ro|rw|quiet|proxdebug|proxtui|nomodeset)$/
+	$_ !~ m/^(ro|rw|quiet|nomodeset)$/ &&
+	$_ !~ m/^(prox(debug|tui|auto)|proxmox-\S+)$/
     } split(/\s+/, $cmdline);
 
     $cfg->{target_cmdline} = join(' ', @filtered);
-- 
2.45.2



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[pve-devel] [PATCH installer v2 3/3] test: add test for kernel commandline parsing

[Christoph Heiss]

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
Changes v1 -> v2:
  * new patch

 Proxmox/Install/Config.pm    |  2 +-
 test/Makefile                |  7 +++-
 test/parse-kernel-cmdline.pl | 62 ++++++++++++++++++++++++++++++++++++
 3 files changed, 69 insertions(+), 2 deletions(-)
 create mode 100755 test/parse-kernel-cmdline.pl

diff --git a/Proxmox/Install/Config.pm b/Proxmox/Install/Config.pm
index 607f0bf..df9be2e 100644
--- a/Proxmox/Install/Config.pm
+++ b/Proxmox/Install/Config.pm
@@ -11,7 +11,7 @@ use Proxmox::Log;
 use Proxmox::Install::ISOEnv;
 use Proxmox::Sys::Net;
 
-my sub parse_kernel_cmdline {
+sub parse_kernel_cmdline {
     my ($cfg) = @_;
 
     my $cmdline = Proxmox::Install::RunEnv::get('kernel_cmdline');
diff --git a/test/Makefile b/test/Makefile
index c473af8..70a05be 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -3,7 +3,8 @@ all:
 export PERLLIB=..
 
 .PHONY: check
-check: test-zfs-arc-max test-run-command test-parse-fqdn test-ui2-stdio test-zfs-get-pool-list
+check: test-zfs-arc-max test-run-command test-parse-fqdn test-ui2-stdio \
+       test-zfs-get-pool-list test-parse-kernel-cmdline
 
 .PHONY: test-zfs-arc-max
 test-zfs-arc-max:
@@ -24,3 +25,7 @@ test-ui2-stdio:
 .PHONY: test-zfs-get-pool-list
 test-zfs-get-pool-list:
 	./zfs-get-pool-list.pl
+
+.PHONY: test-parse-kernel-cmdline
+test-parse-kernel-cmdline:
+	./parse-kernel-cmdline.pl
diff --git a/test/parse-kernel-cmdline.pl b/test/parse-kernel-cmdline.pl
new file mode 100755
index 0000000..10a59a4
--- /dev/null
+++ b/test/parse-kernel-cmdline.pl
@@ -0,0 +1,62 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+
+use Test::More;
+use Test::MockModule qw(strict);
+
+use Proxmox::Install::RunEnv;
+use Proxmox::Install::Config qw(parse_kernel_cmdline);
+
+my $proxmox_install_runenv = Test::MockModule->new('Proxmox::Install::RunEnv');
+my $proxmox_install_isoenv = Test::MockModule->new('Proxmox::Install::ISOEnv');
+
+$proxmox_install_isoenv->redefine(
+    get => sub {
+	my ($k) = @_;
+	return { product => 'pve' } if !defined($k);
+	die "iso environment key $k not mocked!\n";
+    },
+);
+
+my sub mock_kernel_cmdline {
+    my ($cmdline) = @_;
+
+    $proxmox_install_runenv->redefine(
+	get => sub {
+	    my ($k) = @_;
+	    return $cmdline if $k eq 'kernel_cmdline';
+	    die "iso environment key $k not mocked!\n";
+	},
+    );
+}
+
+sub is_parsed {
+    my ($cmdline, $expected) = @_;
+
+    mock_kernel_cmdline($cmdline);
+    my $cfg = Proxmox::Install::Config::parse_kernel_cmdline({});
+
+    is($cfg->{target_cmdline}, $expected,
+	"kernel cmdline matched excepted: $expected");
+}
+
+is_parsed(
+    'BOOT_IMAGE=/vmlinuz-6.8.12-1-pve root=/dev/mapper/pve-root ro quiet',
+    ''
+);
+
+is_parsed(
+    'BOOT_IMAGE=/vmlinuz-6.8.12-1-pve root=/dev/mapper/pve-root ro= quiet',
+    'ro='
+);
+
+is_parsed(
+    'a BOOT_IMAGE=/vmlinuz-6.8.12-1-pve b root=/dev/mapper/pve-root c ro d quiet e',
+    'a b c d e'
+);
+
+is_parsed('proxmox-foo foo=bar proxtui', 'foo=bar');
+
+done_testing();
-- 
2.45.2



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Re: [pve-devel] [PATCH installer v2 0/3] properly filter out all installer-related kernel arguments

[Christoph Heiss]

Ping, still applies on latest master.

On Wed, Aug 21, 2024 at 03:22:59PM GMT, Christoph Heiss wrote:
> Friedrich recently reported that when installing using the
> auto-installer, the kernel commandline does not get cleaned up properly.
>
> For building/testing on current master, [0] needs to be applied
> beforehand to fix a test failure.
>
> [0] https://lists.proxmox.com/pipermail/pve-devel/2024-July/064815.html

FWIW, this patch has been applied in the meantime [0] and is thus no
longer needed as a prerequisite.

[0] https://git.proxmox.com/?p=pve-installer.git;a=commitdiff;h=0c9a7003f

>
> history
> =======
>
> v1: https://lists.proxmox.com/pipermail/pve-devel/2024-August/065070.html
>
> Notable changes v1 -> v2:
>   * parse whole line by splitting and then filtering out individually
>   * add some tests
>
> git diffstat
> ============
>
> Christoph Heiss (3):
>   low level: config: filter out kernel cmdline on word boundaries
>   low level: config: filter out all installer-related kernel arguments
>   test: add test for kernel commandline parsing
>
>  Proxmox/Install/Config.pm    | 11 ++++---
>  test/Makefile                |  7 +++-
>  test/parse-kernel-cmdline.pl | 62 ++++++++++++++++++++++++++++++++++++
>  3 files changed, 75 insertions(+), 5 deletions(-)
>  create mode 100755 test/parse-kernel-cmdline.pl
>
> --
> 2.45.2
>
>
>
> _______________________________________________
> pve-devel mailing list
> pve-devel@lists.proxmox.com
> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
>
>


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