+++ Joachim Breitner [2012-10-13 17:10 +0200]:
> Version: 0.63.2-1
>
> Hi,
>
> any news on this bug? I’d really like to have a way to modify the
> schroot session that sbuild starts before the build.
Here's a patch against current git/0.64.0 which does the following:
renames 'chroot-setup-commands' to 'chroot-user-setup-commands'
Adds 'chroot-system-setup-commands' which runs as soon as the chroot
is set-up, so before the 'update' phase and thus useul for adding
repos. That command is run as root.
The cleanup command is now run as root too. (I decided not to add a
matching 'system' cleanup coammnd as they'd both run at the same time
and this seemed kind of pointless: we have enough options already.
Adds some info to the sbuild man-page about which commands are run
outside the chroot, which inside, which as root, which as build user.
It also includes slightly half-arsed and not tested extra substitution
tokens for hostarch and chrootpath so that these could be passed to
commands. However I couldn't actually work out how to find the chroot
path so that bit is still 'fixme'. This part probably doesn't work, if
at all (My tests with %substitutions didn't seem to work at all even
with the existing code...)
This stuff solves my immediate problem but I'm not sure that it's the
best answer.
Is there actually a good reason for running the current
'chroot-setup-commands' ('chroot-user-setup-commands' above) and
'chroot-cleanup-commands' as the build user? Does anyone use this
functionality? Is it part of the sbuild security model?
Is it useful to have hooks both before update
(chroot-system-setup-commands) and after update/dependency install
(chroot-user-setup-commands)? I can only think of uses for
'chroot-system-setup-commands', but then I'm not a typical sbuild user.
Should we just keep it to 4 scripts setup/cleanup internal/external
all run as root and as early/late as possible?
And I've left '--setup-hook' as replaced by
--chroot-user-setup-commands, but maybe it would be better if it was
now replaced by --chroot-system-setup-commands given the complaint in
#608840 that it used to run as root?
Or, now that I've written the code, should we just have the five
commands as described on the man page:
The 'pre/post-build-' commands are run external to the chroot. The
'chroot-setup-' commands are run inside the chroot. They are all
run as root except 'chroot-system-setup-' commands.
Here is a summary of the ordering, user, internal/external, and point
of running:
--pre-build-commands root ext after chroot session setup
--chroot-system-setup-commands root int after chroot initialisation, before
'update'
--chroot-user-setup-commands user int after update and dependency-install,
before build
--chroot-cleanup-commands root int after build, before session is closed
--post-build-commands root ext after session is shut down
(Input on those descriptions welcome)
Patch attached.
Wookey
--
Principal hats: Linaro, Emdebian, Wookware, Balloonboard, ARM
http://wookware.org/
commit 0dc43b424e3d37b50616145f021961eaa4b582e6
Author: Wookey <woo...@wookware.org>
Date: Tue Jun 11 18:36:10 2013 +0100
Add chroot-system-setup-command run earlier and as root
Rename chroot-setup-command to chroot-user-setup-command
Add base code for hostarch substitutions in commands
diff --git a/debian/changelog b/debian/changelog
index 2ac354a..02d7d9e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+sbuild (0.64.0-1wook1) unstable; urgency=low
+
+ * Add --chroot-system-setup-commands, run early and as root
+
+ -- Wookey <woo...@wookware.org> Tue, 11 Jun 2013 18:39:03 +0100
+
sbuild (0.64.0-1) unstable; urgency=low
[ Thorsten Glaser ]
diff --git a/lib/Sbuild/Build.pm b/lib/Sbuild/Build.pm
index 0b2985c..eb50f9b 100644
--- a/lib/Sbuild/Build.pm
+++ b/lib/Sbuild/Build.pm
@@ -505,6 +505,15 @@ sub run_chroot_session_locked {
my $session = $self->get('Session');
my $resolver = $self->get('Dependency Resolver');
+ # Run specified chroot setup commands
+ $self->check_abort();
+ $self->run_external_commands("chroot-system-setup-commands",
+ $self->get_conf('LOG_EXTERNAL_COMMAND_OUTPUT'),
+ $self->get_conf('LOG_EXTERNAL_COMMAND_ERROR'));
+
+ $self->check_abort();
+
+
$self->check_abort();
$resolver->setup();
@@ -607,14 +616,14 @@ sub run_fetch_install_packages {
# Display message about chroot setup script option use being deprecated
if ($self->get_conf('CHROOT_SETUP_SCRIPT')) {
my $msg = "setup-hook option is deprecated. It has been superceded by ";
- $msg .= "the chroot-setup-commands feature. setup-hook script will be ";
- $msg .= "run via chroot-setup-commands.\n";
+ $msg .= "the chroot-user-setup-commands feature. setup-hook script will be ";
+ $msg .= "run via chroot-user-setup-commands.\n";
$self->log_warning($msg);
}
# Run specified chroot setup commands
$self->check_abort();
- $self->run_external_commands("chroot-setup-commands",
+ $self->run_external_commands("chroot-user-setup-commands",
$self->get_conf('LOG_EXTERNAL_COMMAND_OUTPUT'),
$self->get_conf('LOG_EXTERNAL_COMMAND_ERROR'));
@@ -1000,6 +1009,7 @@ sub run_command {
my $log_output = shift;
my $log_error = shift;
my $chroot = shift;
+ my $rootuser = shift;
# Used to determine if we are to log from commands
my ($out, $err, $defaults);
@@ -1022,7 +1032,7 @@ sub run_command {
$err = $defaults->{'STREAMERR'} if ($log_error);
$self->get('Session')->run_command(
{ COMMAND => \@{$command},
- USER => $self->get_conf('BUILD_USER'),
+ USER => ($rootuser ? 'root' : $self->get_conf('BUILD_USER')),
PRIORITY => 0,
STREAMOUT => $out,
STREAMERR => $err,
@@ -1053,13 +1063,18 @@ sub run_external_commands {
return 1 if !(@commands);
# Create appropriate log message and determine if the commands are to be
- # run inside the chroot or not.
+ # run inside the chroot or not, and as root or not.
my $chroot = 0;
+ my $rootuser = 1;
if ($stage eq "pre-build-commands") {
$self->log_subsection("Pre Build Commands");
- } elsif ($stage eq "chroot-setup-commands") {
- $self->log_subsection("Chroot Setup Commands");
+ } elsif ($stage eq "chroot-system-setup-commands") {
+ $self->log_subsection("Chroot System Setup Commands");
$chroot = 1;
+ } elsif ($stage eq "chroot-user-setup-commands") {
+ $self->log_subsection("Chroot User Setup Commands");
+ $chroot = 1;
+ $rootuser = 0;
} elsif ($stage eq "chroot-cleanup-commands") {
$self->log_subsection("Chroot Cleanup Commands");
$chroot = 1;
@@ -1070,12 +1085,16 @@ sub run_external_commands {
# Run each command, substituting the various percent escapes (like
# %SBUILD_DSC) from the commands to run with the appropriate subsitutions.
my $dsc = $self->get('DSC');
- my $changes;
+ my ($changes, $chrootpath, $hostarch);
$changes = $self->get('Changes File') if ($self->get('Changes File'));
+ $hostarch = $self->get('Host Arch') if ($self->get('Host Arch'));
+ $chrootpath = ""; # I can't see where to get the chroot path from. Fixme Roger!
my %percent = (
"%" => "%",
"d" => $dsc, "SBUILD_DSC" => $dsc,
"c" => $changes, "SBUILD_CHANGES" => $changes,
+ "p" => $chrootpath,
+ "a" => $hostarch,
);
# Our escapes pattern, with longer escapes first, then sorted lexically.
my $keyword_pat = join("|",
@@ -1093,7 +1112,7 @@ sub run_external_commands {
}
my $command_str = join(" ", @{$command});
$self->log_subsubsection("$command_str");
- $returnval = $self->run_command($command, $log_output, $log_error, $chroot);
+ $returnval = $self->run_command($command, $log_output, $log_error, $chroot, $rootuser);
$self->log("\n");
if (!$returnval) {
$self->log_error("Command '$command_str' failed to run.\n");
diff --git a/lib/Sbuild/Conf.pm b/lib/Sbuild/Conf.pm
index 27b035c..3e6cc12 100644
--- a/lib/Sbuild/Conf.pm
+++ b/lib/Sbuild/Conf.pm
@@ -973,7 +973,8 @@ sub setup ($) {
GROUP => 'Chroot options',
DEFAULT => {
"pre-build-commands" => [],
- "chroot-setup-commands" => [],
+ "chroot-system-setup-commands" => [],
+ "chroot-user-setup-commands" => [],
"chroot-cleanup-commands" => [],
"post-build-commands" => [],
},
@@ -984,7 +985,11 @@ sub setup ($) {
[\'foo\', \'arg1\', \'arg2\'],
[\'bar\', \'arg1\', \'arg2\', \'arg3\'],
],
- "chroot-setup-commands" => [
+ "chroot-system-setup-commands" => [
+ [\'foo\', \'arg1\', \'arg2\'],
+ [\'bar\', \'arg1\', \'arg2\', \'arg3\'],
+ ],
+ "chroot-user-setup-commands" => [
[\'foo\', \'arg1\', \'arg2\'],
[\'bar\', \'arg1\', \'arg2\', \'arg3\'],
],
@@ -1096,7 +1101,7 @@ if (\%individual_stalled_pkg_timeout) {
END
my $custom_setup = <<END;
-push(\@{\${\$conf->get('EXTERNAL_COMMANDS')}{"chroot-setup-commands"}},
+push(\@{\${\$conf->get('EXTERNAL_COMMANDS')}{"chroot-user-setup-commands"}},
\$chroot_setup_script) if (\$chroot_setup_script);
# Trigger log directory creation if needed
diff --git a/lib/Sbuild/Options.pm b/lib/Sbuild/Options.pm
index 4a232bf..b05237d 100644
--- a/lib/Sbuild/Options.pm
+++ b/lib/Sbuild/Options.pm
@@ -195,7 +195,7 @@ sub set_options {
},
"setup-hook=s" => sub {
my @command = split(/\s+/, $_[1]);
- push(@{${$self->get_conf('EXTERNAL_COMMANDS')}{"chroot-setup-commands"}},
+ push(@{${$self->get_conf('EXTERNAL_COMMANDS')}{"chroot-user-setup-commands"}},
\@command);
$self->set_conf('CHROOT_SETUP_SCRIPT', $_[1]);
},
@@ -262,9 +262,14 @@ sub set_options {
push(@{${$self->get_conf('EXTERNAL_COMMANDS')}{"pre-build-commands"}},
\@command);
},
- "chroot-setup-commands=s" => sub {
+ "chroot-system-setup-commands=s" => sub {
my @command = split(/\s+/, $_[1]);
- push(@{${$self->get_conf('EXTERNAL_COMMANDS')}{"chroot-setup-commands"}},
+ push(@{${$self->get_conf('EXTERNAL_COMMANDS')}{"chroot-system-setup-commands"}},
+ \@command);
+ },
+ "chroot-user-setup-commands=s" => sub {
+ my @command = split(/\s+/, $_[1]);
+ push(@{${$self->get_conf('EXTERNAL_COMMANDS')}{"chroot-user-setup-commands"}},
\@command);
},
"chroot-cleanup-commands=s" => sub {
diff --git a/man/sbuild.1.in b/man/sbuild.1.in
index a91a064..521465f 100644
--- a/man/sbuild.1.in
+++ b/man/sbuild.1.in
@@ -67,7 +67,8 @@ sbuild \- build debian packages from source
.RB [ \-\-piuparts\-root\-arg=\fIoptions\fP ]
.RB [ \-\-piuparts\-root\-args=\fIoptions\fP ]
.RB [ \-\-pre\-build\-commands=\fIstring\fP ]
-.RB [ \-\-chroot\-setup\-commands=\fIstring\fP ]
+.RB [ \-\-chroot\-system\-setup\-commands=\fIstring\fP ]
+.RB [ \-\-chroot\-user\-setup\-commands=\fIstring\fP ]
.RB [ \-\-chroot\-cleanup\-commands=\fIstring\fP ]
.RB [ \-\-post\-build\-commands=\fIstring\fP ]
.RB [ \-\-log\-external\-command\-output ]
@@ -412,6 +413,26 @@ through the use of the configuration files. In the configuration file, the list
of commands to run are placed in a hash of arrays of arrays of strings
corresponding to the commands to run.
.PP
+The \fIpre/post-build-\fP commands are run external to the chroot. The
+\fIchroot\-setup\-\fP commands are run inside the chroot. They are all
+run as root except \fIchroot-system-setup-\fP commands, which is run as
+the current sbuild user.
+.PP
+Here is a summary of the ordering, user, internal/external, and point
+of running:
+.nf
+.br
+\f[CB]\-\-pre\-build\-commands root ext After chroot session setup\fP
+.br
+\f[CB]\-\-chroot\-system\-setup\-commands root int After chroot initialisation, before 'update'\fP
+.br
+\f[CB]\-\-chroot\-user\-setup\-commands user int After update and dependency-install, before build\fP
+.br
+\f[CB]\-\-chroot\-cleanup\-commands root int After build, before session is closed\fP
+.br
+\f[CB]\-\-post\-build\-commands root ext After session is shut down\fP
+.fi
+.PP
Here's an example of how to edit the configuration files to run "foo" and "bar"
with arguments before a build starts.
.PP
