From: Emil Velikov <emil.l.velikov@gmail.com>
Date: Mon, 19 May 2025 20:08:26 +0000 (+0100)
Subject: tools/modprobe: accept module name with --show-exports
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5dfa7c9a9bdad68df1c3bb1a366d6a8cd5d13f3b;p=thirdparty%2Fkmod.git

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 54a71d6a..b4e4acaf 100644
--- 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)
 {