export module's options and commands.

[thirdparty/kmod.git] / libkmod / libkmod.c

diff --git a/libkmod/libkmod.c b/libkmod/libkmod.c
index b1f4b714fb601fc4861c6c5fadd23b43bfe4147d..59ed81b74c465324b578ff05c87bf119fd26610d 100644 (file)
--- a/libkmod/libkmod.c
+++ b/libkmod/libkmod.c
@@ -622,3 +622,102 @@ KMOD_EXPORT void kmod_unload_resources(struct kmod_ctx *ctx)
                }
        }
 }
+
+KMOD_EXPORT int kmod_resolve_alias_options(struct kmod_ctx *ctx, const char *alias, char **options)
+{
+       struct kmod_list *modules = NULL, *l;
+       char *opts = NULL;
+       size_t optslen = 0;
+       int err;
+
+       if (ctx == NULL || options == NULL)
+               return -ENOENT;
+
+       err = kmod_module_new_from_lookup(ctx, alias, &modules);
+       if (err >= 0) {
+               kmod_list_foreach(l, modules) {
+                       const char *str = kmod_module_get_options(l->data);
+                       size_t len;
+                       void *tmp;
+
+                       if (str == NULL)
+                               continue;
+                       len = strlen(str);
+
+                       tmp = realloc(opts, optslen + len + 2);
+                       if (tmp == NULL)
+                               goto failed;
+                       opts = tmp;
+                       if (optslen > 0) {
+                               opts[optslen] = ' ';
+                               optslen++;
+                       }
+                       memcpy(opts + optslen, str, len);
+                       optslen += len;
+                       opts[optslen] = '\0';
+               }
+       }
+
+       kmod_list_foreach(l, ctx->config->options) {
+               const struct kmod_list *ml;
+               const char *modname = kmod_option_get_modname(l);
+               const char *str;
+               bool already_done = false;
+               size_t len;
+               void *tmp;
+
+               if (fnmatch(modname, alias, 0) != 0)
+                       continue;
+
+               kmod_list_foreach(ml, modules) {
+                       const char *mln = kmod_module_get_name(ml->data);
+                       if (fnmatch(modname, mln, 0) == 0) {
+                               already_done = true;
+                               break;
+                       }
+               }
+               if (already_done)
+                       continue;
+
+               str = kmod_option_get_options(l);
+               len = strlen(str);
+               tmp = realloc(opts, optslen + len + 2);
+               if (tmp == NULL)
+                       goto failed;
+               opts = tmp;
+               if (optslen > 0) {
+                       opts[optslen] = ' ';
+                       optslen++;
+               }
+               memcpy(opts + optslen, str, len);
+               optslen += len;
+               opts[optslen] = '\0';
+       }
+
+       DBG(ctx, "alias=%s  options='%s'\n", alias, opts);
+       kmod_module_unref_list(modules);
+       *options = opts;
+       return 0;
+
+failed:
+       kmod_module_unref_list(modules);
+       free(opts);
+       ERR(ctx, "out of memory\n");
+       *options = NULL;
+       return -ENOMEM;
+}
+
+const struct kmod_list *kmod_get_options(const struct kmod_ctx *ctx)
+{
+       return ctx->config->options;
+}
+
+const struct kmod_list *kmod_get_install_commands(const struct kmod_ctx *ctx)
+{
+       return ctx->config->install_commands;
+}
+
+const struct kmod_list *kmod_get_remove_commands(const struct kmod_ctx *ctx)
+{
+       return ctx->config->remove_commands;
+}