On Fri, Jan 22, 2021 at 4:29 PM Vit Mojzis <vmojzis@xxxxxxxxxx> wrote: > "ifdef/ifndef" statements can be used to conditionally define > an interface, but this syntax is not recognised by sepolgen-ifgen. > Fix sepolgen-ifgen to allow any policy statement inside an > "fidef/ifndef" statement. > > Fixes: > $ cat <<EOF > i.if > ifndef(`apache_manage_pid_files',` > interface(`apache_manage_pid_files',` > manage_files_pattern($1, httpd_var_run_t, httpd_var_run_t) > ') > ') > > #sepolgen-ifgen --interface=i.if > i.if: Syntax error on line 2 interface [type=INTERFACE] > i.if: Syntax error on line 4 ' [type=SQUOTE] > > Signed-off-by: Vit Mojzis <vmojzis@xxxxxxxxxx> > --- > Thanks. Fixed. And I replaced "statement" with "statements" to allow > multiple statements (as was possible with interface_stmts). > I'm not all that sure about the last line since I didn't manage to find > it's meaning (but I assume IF-THEN-ELSE). Yes, the third argument is basically an optional 'else' branch: https://www.gnu.org/software/m4/manual/m4-1.4.15/html_node/Ifdef.html > > python/sepolgen/src/sepolgen/refparser.py | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/python/sepolgen/src/sepolgen/refparser.py b/python/sepolgen/src/sepolgen/refparser.py > index 9f850990..e611637f 100644 > --- a/python/sepolgen/src/sepolgen/refparser.py > +++ b/python/sepolgen/src/sepolgen/refparser.py > @@ -433,9 +433,9 @@ def p_ifelse(p): > > > def p_ifdef(p): > - '''ifdef : IFDEF OPAREN TICK IDENTIFIER SQUOTE COMMA TICK interface_stmts SQUOTE CPAREN optional_semi > - | IFNDEF OPAREN TICK IDENTIFIER SQUOTE COMMA TICK interface_stmts SQUOTE CPAREN optional_semi > - | IFDEF OPAREN TICK IDENTIFIER SQUOTE COMMA TICK interface_stmts SQUOTE COMMA TICK interface_stmts SQUOTE CPAREN optional_semi > + '''ifdef : IFDEF OPAREN TICK IDENTIFIER SQUOTE COMMA TICK statements SQUOTE CPAREN optional_semi > + | IFNDEF OPAREN TICK IDENTIFIER SQUOTE COMMA TICK statements SQUOTE CPAREN optional_semi > + | IFDEF OPAREN TICK IDENTIFIER SQUOTE COMMA TICK statements SQUOTE COMMA TICK statements SQUOTE CPAREN optional_semi > ''' > x = refpolicy.IfDef(p[4]) > if p[1] == 'ifdef': > -- > 2.29.2 > Acked-by: Ondrej Mosnacek <omosnace@xxxxxxxxxx> -- Ondrej Mosnacek Software Engineer, Platform Security - SELinux kernel Red Hat, Inc.
