From 5ed5ab09ff7d4fb581aec3a35f2eff24eaa838f9 Mon Sep 17 00:00:00 2001
From: Michal Marek <mmarek@suse.cz>
Date: Wed, 5 Mar 2014 15:02:44 +0100
Subject: [PATCH] modprobe: Implement --allow-unsupported-modules

References: fate#316971
Patch-mainline: never
---
 Makefile.am                   | 4 +++-
 libkmod/libkmod-unsupported.c | 9 +++++++++
 libkmod/libkmod-unsupported.h | 8 ++++++++
 tools/modprobe.c              | 8 +++++++-
 4 files changed, 27 insertions(+), 2 deletions(-)
 create mode 100644 libkmod/libkmod-unsupported.c
 create mode 100644 libkmod/libkmod-unsupported.h

diff --git a/Makefile.am b/Makefile.am
index 26384ccd6de1..d9856f77f8f6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -106,7 +106,9 @@ libkmod_libkmod_la_LIBADD = \
 	${libpkcs7asn1c_LIBS}
 
 noinst_LTLIBRARIES += libkmod/libkmod-internal.la
-libkmod_libkmod_internal_la_SOURCES = $(libkmod_libkmod_la_SOURCES)
+libkmod_libkmod_internal_la_SOURCES = $(libkmod_libkmod_la_SOURCES) \
+				      libkmod/libkmod-unsupported.c \
+				      libkmod/libkmod-unsupported.h
 libkmod_libkmod_internal_la_LDFLAGS = $(AM_LDFLAGS) \
 	-Wl,--version-script=$(top_srcdir)/libkmod/libkmod.sym
 libkmod_libkmod_internal_la_DEPENDENCIES  = $(libkmod_libkmod_la_DEPENDENCIES)
diff --git a/libkmod/libkmod-unsupported.c b/libkmod/libkmod-unsupported.c
new file mode 100644
index 000000000000..7ef9fc875b46
--- /dev/null
+++ b/libkmod/libkmod-unsupported.c
@@ -0,0 +1,9 @@
+#include "libkmod-internal.h"
+#include "libkmod-unsupported.h"
+
+void kmod_internal_allow_unsupported(struct kmod_ctx *ctx)
+{
+	struct kmod_config *config = (struct kmod_config *)kmod_get_config(ctx);
+
+	config->block_unsupported = 0;
+}
diff --git a/libkmod/libkmod-unsupported.h b/libkmod/libkmod-unsupported.h
new file mode 100644
index 000000000000..a95b4a22fd14
--- /dev/null
+++ b/libkmod/libkmod-unsupported.h
@@ -0,0 +1,8 @@
+#pragma once
+
+/*
+ * This function implements the --allow-unsupported-modules modprobe
+ * option. It is not part of the kmod API and not exported by the shared
+ * library
+ */
+void kmod_internal_allow_unsupported(struct kmod_ctx *ctx);
diff --git a/tools/modprobe.c b/tools/modprobe.c
index c0b7c6854375..1f6f28666183 100644
--- a/tools/modprobe.c
+++ b/tools/modprobe.c
@@ -38,6 +38,8 @@
 
 #include "kmod.h"
 
+#include "libkmod/libkmod-unsupported.h"
+
 static int log_priority = LOG_CRIT;
 static int use_syslog = 0;
 #define LOG(...) log_printf(log_priority, __VA_ARGS__)
@@ -729,6 +731,7 @@ static int do_modprobe(int argc, char **orig_argv)
 	int do_remove = 0;
 	int do_show_config = 0;
 	int do_show_modversions = 0;
+	int allow_unsupported = 0;
 	int err;
 
 	argv = prepend_options_from_env(&argc, orig_argv);
@@ -812,7 +815,7 @@ static int do_modprobe(int argc, char **orig_argv)
 			kversion = optarg;
 			break;
 		case 128:
-			/* --allow-unsupported-modules does nothing for now */
+			allow_unsupported = 1;
 			break;
 		case 's':
 			env_modprobe_options_append("-s");
@@ -885,6 +888,9 @@ static int do_modprobe(int argc, char **orig_argv)
 
 	log_setup_kmod_log(ctx, verbose);
 
+	if (allow_unsupported)
+		kmod_internal_allow_unsupported(ctx);
+
 	kmod_load_resources(ctx);
 
 	if (do_show_config)
-- 
2.13.6