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| author | Jessica Yu <jeyu@kernel.org> | 2020-03-06 17:02:06 +0100 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2020-03-13 10:04:36 +0900 |
| commit | 54b778476941c768ef749803167dd21385c01038 (patch) | |
| tree | e3db6e8c847dddba56c5fffa36663859713596b2 /scripts/mod | |
| parent | 93c95e526a4ef00eb3d5a1e0920ba5a22f32e40d (diff) | |
| download | lwn-54b778476941c768ef749803167dd21385c01038.tar.gz lwn-54b778476941c768ef749803167dd21385c01038.zip | |
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.c | 14 |
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; |