tools/modprobe: accept module name with --show-exports

Use the newly introduced helper module_new_from_any(), so we accept both
files as well as modules. This means you can now do:
 - modprobe --show-exports drm-vram-helper, alongside the existing
 - modprobe --show-exports /full/path/to/the/module/drm_vram_helper.ko

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Link: https://github.com/kmod-project/kmod/pull/353
Signed-off-by: Lucas De Marchi <lucas.de.marchi@gmail.com>

diff --git a/tools/modprobe.c b/tools/modprobe.c
index 54a71d6a524247096903e9ea4380c441a836825c..b4e4acaf9d5fceed3478fd13cc1c3ce6d4e0b69d 100644 (file)
--- a/tools/modprobe.c
+++ b/tools/modprobe.c
@@ -248,20 +248,13 @@ static int show_modversions(struct kmod_ctx *ctx, const char *filename)
        return 0;
 }
 
-static int show_exports(struct kmod_ctx *ctx, const char *filename)
+static int print_exports(const struct kmod_module *mod)
 {
        struct kmod_list *l, *list = NULL;
-       struct kmod_module *mod;
-       int err = kmod_module_new_from_path(ctx, filename, &mod);
+       int err = kmod_module_get_symbols(mod, &list);
        if (err < 0) {
-               LOG("Module %s not found.\n", filename);
-               return err;
-       }
-
-       err = kmod_module_get_symbols(mod, &list);
-       if (err < 0) {
-               LOG("could not get symbols of %s: %s\n", filename, strerror(-err));
-               kmod_module_unref(mod);
+               LOG("could not get symbols of %s: %s\n", kmod_module_get_name(mod),
+                   strerror(-err));
                return err;
        }
 
@@ -271,10 +264,32 @@ static int show_exports(struct kmod_ctx *ctx, const char *filename)
                printf("0x%08" PRIx64 "\t%s\n", crc, symbol);
        }
        kmod_module_symbols_free_list(list);
-       kmod_module_unref(mod);
        return 0;
 }
 
+static int show_exports(struct kmod_ctx *ctx, const char *filename)
+{
+       struct kmod_list *l, *list = NULL;
+       struct kmod_module *mod = NULL;
+       int err = module_new_from_any(ctx, filename, &mod, &list);
+       if (err < 0)
+               return err;
+
+       /* If module is loaded from path */
+       if (mod != NULL) {
+               err = print_exports(mod);
+               kmod_module_unref(mod);
+       } else {
+               kmod_list_foreach(l, list) {
+                       mod = kmod_module_get_module(l);
+                       err = print_exports(mod);
+                       kmod_module_unref(mod);
+               }
+               kmod_module_unref_list(list);
+       }
+       return err;
+}
+
 static int command_do(struct kmod_module *module, const char *type, const char *command,
                      const char *cmdline_opts)
 {