From 6bd0713deb6be5922b419c6a73361843b8497025 Mon Sep 17 00:00:00 2001
From: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Date: Mon, 30 Jan 2012 17:02:06 -0200
Subject: [PATCH] libkmod-module: probe: add print_action callback

This allows to implement dry-run in modprobe without exporting
kmod_module_get_probe_list().
---
 libkmod/libkmod-module.c | 14 +++++++++++++-
 libkmod/libkmod.h        |  3 ++-
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/libkmod/libkmod-module.c b/libkmod/libkmod-module.c
index 7d4fbef..a85eeea 100644
--- a/libkmod/libkmod-module.c
+++ b/libkmod/libkmod-module.c
@@ -1090,6 +1090,9 @@ static int kmod_module_get_probe_list(struct kmod_module *mod,
  * to @mod, not to its dependencies.
  * @run_install: function to run when @mod is backed by an install command.
  * @data: data to give back to @run_install callback
+ * @print_action: function to call with the action being taken (install or
+ * insmod). It's useful for tools like modprobe when running with verbose
+ * output or in dry-run mode.
  *
  * Insert a module in Linux kernel resolving dependencies, soft dependencies,
  * install commands and applying blacklist.
@@ -1107,7 +1110,10 @@ KMOD_EXPORT int kmod_module_probe_insert_module(struct kmod_module *mod,
 			unsigned int flags, const char *extra_options,
 			int (*run_install)(struct kmod_module *m,
 						const char *cmd, void *data),
-			const void *data)
+			const void *data,
+			void (*print_action)(struct kmod_module *m,
+						bool install,
+						const char *options))
 {
 	struct kmod_list *list = NULL, *l;
 	struct probe_insert_cb cb;
@@ -1161,6 +1167,9 @@ KMOD_EXPORT int kmod_module_probe_insert_module(struct kmod_module *mod,
 				free(options);
 				break;
 			}
+			if (print_action != NULL)
+				print_action(m, true, options ?: "");
+
 			err = module_do_install_commands(m, options, &cb);
 		} else {
 			int state = kmod_module_get_initstate(m);
@@ -1178,6 +1187,9 @@ KMOD_EXPORT int kmod_module_probe_insert_module(struct kmod_module *mod,
 				free(options);
 				continue;
 			}
+			if (print_action != NULL)
+				print_action(m, false, options ?: "");
+
 			err = kmod_module_insert_module(m, flags, options);
 		}
 
diff --git a/libkmod/libkmod.h b/libkmod/libkmod.h
index bc503fb..a9f6dfc 100644
--- a/libkmod/libkmod.h
+++ b/libkmod/libkmod.h
@@ -163,7 +163,8 @@ int kmod_module_insert_module(struct kmod_module *mod, unsigned int flags, const
 int kmod_module_probe_insert_module(struct kmod_module *mod,
 			unsigned int flags, const char *extra_options,
 			int (*run_install)(struct kmod_module *m, const char *cmdline, void *data),
-			const void *data);
+			const void *data,
+			void (*print_action)(struct kmod_module *m, bool install, const char *options));
 
 const char *kmod_module_get_name(const struct kmod_module *mod);
 const char *kmod_module_get_path(const struct kmod_module *mod);