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authorJessica Yu <jeyu@kernel.org>2020-03-06 19:02:06 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2020-03-13 04:04:36 +0300
commit54b778476941c768ef749803167dd21385c01038 (patch)
treee3db6e8c847dddba56c5fffa36663859713596b2 /scripts/mod
parent93c95e526a4ef00eb3d5a1e0920ba5a22f32e40d (diff)
downloadlinux-54b778476941c768ef749803167dd21385c01038.tar.xz
modpost: return error if module is missing ns imports and MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n
Currently when CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n, modpost only warns when a module is missing namespace imports. Under this configuration, such a module cannot be loaded into the kernel anyway, as the module loader would reject it. We might as well return a build error when a module is missing namespace imports under CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n, so that the build warning does not go ignored/unnoticed. Signed-off-by: Jessica Yu <jeyu@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/mod')
-rw-r--r--scripts/mod/modpost.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index a6f7b309ac45..a3d8370f9544 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -39,6 +39,8 @@ static int sec_mismatch_count = 0;
static int sec_mismatch_fatal = 0;
/* ignore missing files */
static int ignore_missing_files;
+/* If set to 1, only warn (instead of error) about missing ns imports */
+static int allow_missing_ns_imports;
enum export {
export_plain, export_unused, export_gpl,
@@ -2205,8 +2207,11 @@ static int check_exports(struct module *mod)
if (exp->namespace &&
!module_imports_namespace(mod, exp->namespace)) {
- warn("module %s uses symbol %s from namespace %s, but does not import it.\n",
- basename, exp->name, exp->namespace);
+ modpost_log(allow_missing_ns_imports ? LOG_WARN : LOG_ERROR,
+ "module %s uses symbol %s from namespace %s, but does not import it.\n",
+ basename, exp->name, exp->namespace);
+ if (!allow_missing_ns_imports)
+ err = 1;
add_namespace(&mod->missing_namespaces, exp->namespace);
}
@@ -2549,7 +2554,7 @@ int main(int argc, char **argv)
struct ext_sym_list *extsym_iter;
struct ext_sym_list *extsym_start = NULL;
- while ((opt = getopt(argc, argv, "i:e:mnsT:o:awEd:")) != -1) {
+ while ((opt = getopt(argc, argv, "i:e:mnsT:o:awENd:")) != -1) {
switch (opt) {
case 'i':
kernel_read = optarg;
@@ -2587,6 +2592,9 @@ int main(int argc, char **argv)
case 'E':
sec_mismatch_fatal = 1;
break;
+ case 'N':
+ allow_missing_ns_imports = 1;
+ break;
case 'd':
missing_namespace_deps = optarg;
break;