Lookup aliases in the modules.builtin.modinfo

[thirdparty/kmod.git] / tools / depmod.c

diff --git a/tools/depmod.c b/tools/depmod.c
index 391afe9fe0a01ce881e0b208e80cf648d4251fba..fbbce10eb0db48bda2361072c83f0f96e955df26 100644 (file)
--- a/tools/depmod.c
+++ b/tools/depmod.c
@@ -2402,6 +2402,68 @@ static int output_devname(struct depmod *depmod, FILE *out)
        return 0;
 }
 
+static int output_builtin_alias_bin(struct depmod *depmod, FILE *out)
+{
+       int ret = 0, count = 0;
+       struct index_node *idx;
+       struct kmod_list *l, *builtin = NULL;
+
+       idx = index_create();
+
+       if (idx == NULL) {
+               ret = -ENOMEM;
+               goto fail;
+       }
+
+       ret = kmod_module_get_builtin(depmod->ctx, &builtin);
+       if (ret < 0) {
+               if (ret == -ENOENT)
+                       ret = 0;
+               goto fail;
+       }
+
+       kmod_list_foreach(l, builtin) {
+               struct kmod_list *ll, *info_list = NULL;
+               struct kmod_module *mod = l->data;
+               const char *modname = kmod_module_get_name(mod);
+
+               ret = kmod_module_get_info(mod, &info_list);
+               if (ret < 0)
+                       goto fail;
+
+               kmod_list_foreach(ll, info_list) {
+                       char alias[PATH_MAX];
+                       const char *key = kmod_module_info_get_key(ll);
+                       const char *value = kmod_module_info_get_value(ll);
+
+                       if (!streq(key, "alias"))
+                               continue;
+
+                       alias[0] = '\0';
+                       if (alias_normalize(value, alias, NULL) < 0) {
+                               WRN("Unmatched bracket in %s\n", value);
+                               continue;
+                       }
+
+                       index_insert(idx, alias, modname, 0);
+               }
+
+               kmod_module_info_free_list(info_list);
+
+               index_insert(idx, modname, modname, 0);
+               count++;
+       }
+
+       if (count)
+               index_write(idx, out);
+       index_destroy(idx);
+fail:
+       if (builtin)
+               kmod_module_unref_list(builtin);
+
+       return ret;
+}
+
 static int depmod_output(struct depmod *depmod, FILE *out)
 {
        static const struct depfile {
@@ -2416,6 +2478,7 @@ static int depmod_output(struct depmod *depmod, FILE *out)
                { "modules.symbols", output_symbols },
                { "modules.symbols.bin", output_symbols_bin },
                { "modules.builtin.bin", output_builtin_bin },
+               { "modules.builtin.alias.bin", output_builtin_alias_bin },
                { "modules.devname", output_devname },
                { }
        };