DH_TESTROOT(1)                     Debhelper                    DH_TESTROOT(1)

       dh_testroot - ensure that a package is built with necessary level of
       root permissions

       dh_testroot [debhelperoptions]

       dh_testroot is used to determine if the target is being run with
       sufficient access to (fake)root.

       The definition of sufficient access depends on whether the builder (the
       tool invoking the debian/rules target) supports the Rules-Requires-Root
       (R3) field.  If the builder supports R3, then it will set the
       environment variable DEB_RULES_REQUIRES_ROOT and dh_testroot will
       validate that the builder followed the minimum requirements for the
       given value of DEB_RULES_REQUIRES_ROOT.

       If the builder does not support Rules-Requires-Root, then it will not
       set the DEB_RULES_REQUIRES_ROOT environment variable.  This will in
       turn make dh_testroot (and the rest of debhelper) fall back to assuming
       that (fake)root is implied.

       The following is a summary of how dh_testroot behaves based on the
       DEB_RULES_REQUIRES_ROOT environment variable (leading and trailing
       whitespace in the variable is ignored).

       -   If unset, or set to "binary-targets", then dh_testroot asserts that
           it is run as root or under fakeroot(1).

       -   If set to "no", then dh_testroot returns successfully (without
           performing any additional checks).

       -   If set to any other value than the above, then dh_testroot asserts
           that it is either run as root (or under fakeroot(1)) or the builder
           has provided the DEB_GAIN_ROOT_CMD environment variable (e.g. via
           dpkg-buildpackage -r).

       Please note that dh_testroot does not read the Rules-Requires-Root
       field.  Which implies that dh_testroot may produce incorrect result if
       the builder lies in DEB_RULES_REQUIRES_ROOT.  On the flip side, it also
       enables things like testing for what will happen when
       DEB_RULES_REQUIRES_ROOT is set to a given value.


       This program is a part of debhelper.

       Joey Hess <joeyh@debian.org>

11.3.5                            2018-06-30                    DH_TESTROOT(1)

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