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#!/usr/bin/perl =encoding UTF-8 =head1 NAME dh_testroot - ensure that a package is built with necessary level of root permissions =head1 SYNOPSIS B
[S
>] =head1 DESCRIPTION B
is used to determine if the target is being run with suffient access to root(-like) features. The definition of sufficient access depends on whether the builder (the tool invoking the F
target) supports the I
(R³) field. If the builder supports R³, then it will set the environment variable I
and B
will validate that the builder followed the minimum requirements for the given value of I
. If the builder does not support I
, then it will not set the I
environment variable. This will in turn make B
(and the rest of debhelper) fall back to assuming that (fake)root is implied. The following is a summary of how B
behaves based on the I
environment variable (leading and trailing whitespace in the variable is ignored). =over 4 =item - If unset, or set to C
, then B
asserts that it is run as root or under L
. =item - If set to C
, then B
returns successfully (without performing any additional checks). =item - If set to any other value than the above, then B
asserts that it is either run as root (or under L
) or the builder has provided the B
environment variable (e.g. via dpkg-buildpackage -r). =back Please note that B
does I
read the I
field. Which implies that B
may produce incorrect result if the builder lies in I
. On the flip side, it also enables things like testing for what will happen when I
is set to a given value. =cut use strict; use warnings; use Debian::Debhelper::Dh_Lib; our $VERSION = DH_BUILTIN_VERSION; inhibit_log(); my $requirements = Debian::Debhelper::Dh_Lib::root_requirements(); if (! -f 'debian/control') { warning('dh_testroot must be called from the source root'); } # PROMISE: DH NOOP WITHOUT internal(rrr) # By declaration; nothing requires root and this command must be a no-op in that case. exit 0 if $requirements eq 'none'; # The builder /can/ choose to ignore the requirements and just call us as root. # If so, we do not bother checking the requirements any further. exit 0 if $< == 0; if ($requirements eq 'legacy-root') { error("You must run this as root (or use fakeroot)."); } else { my $env = $ENV{DEB_GAIN_ROOT_CMD}; error("Package needs targeted root but builder has not provided a gain-root command via \${DEB_GAIN_ROOT_CMD}") if not $env; } =head1 SEE ALSO L
This program is a part of debhelper. =head1 AUTHOR Joey Hess
=cut