diff options
| author | Jessica Yu <jeyu@kernel.org> | 2020-03-06 16:37:20 +0100 |
|---|---|---|
| committer | Jessica Yu <jeyu@kernel.org> | 2020-03-06 16:57:48 +0100 |
| commit | 7ffe6770c595bab6195ee8046ddc434099af7b1c (patch) | |
| tree | a696089d9dcd051a9a3fcfc1b9630ad313124972 | |
| parent | 1920c7ea55673ace8d677cb2a73ad95c61c4321f (diff) | |
| download | linux-modpost_logging.tar.gz | |
modpost: return error if module is missing ns imports and MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=nmodpost_logging
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>
| -rw-r--r-- | scripts/Makefile.modpost | 15 | ||||
| -rw-r--r-- | scripts/mod/modpost.c | 14 |
2 files changed, 19 insertions, 10 deletions
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index b4d3f2d122ac2e..957eed6a17a544 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -46,13 +46,14 @@ include scripts/Kbuild.include kernelsymfile := $(objtree)/Module.symvers modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers -MODPOST = scripts/mod/modpost \ - $(if $(CONFIG_MODVERSIONS),-m) \ - $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a) \ - $(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \ - $(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS))) \ - $(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \ - $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \ +MODPOST = scripts/mod/modpost \ + $(if $(CONFIG_MODVERSIONS),-m) \ + $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a) \ + $(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \ + $(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS))) \ + $(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \ + $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \ + $(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N) \ $(if $(KBUILD_MODPOST_WARN),-w) ifdef MODPOST_VMLINUX diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index a2329235a6db83..036cc3bcb3e36c 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, @@ -2206,8 +2208,11 @@ 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); } @@ -2550,7 +2555,7 @@ 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; @@ -2588,6 +2593,9 @@ 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; |