linux-kernel - [PATCH 1/2] kobjects: Transmit return value of call

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Message-ID: <4860B756.2040608@cn.fujitsu.com>
Date:	Tue, 24 Jun 2008 16:59:02 +0800
From:	Wang Chen <wangchen@...fujitsu.com>
To:	Greg Kroah-Hartman <gregkh@...e.de>
CC:	Kay Sievers <kay.sievers@...e.de>, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] kobjects: Transmit return value of call_usermodehelper()
 to caller

kobject_uevent_env() drops the return value of call_usermodehelper().
It will make upper caller, such as dm_send_uevents(), to lose error
information.

BTW, Previously kobject_uevent_env() transmitted return of
call_usermodehelper() to callers, but
commit	5f123fbd80f4f788554636f02bf73e40f914e0d6
"[PATCH] merge kobject_uevent and kobject_hotplug" removed it.

Signed-off-by: Wang Chen <wangchen@...fujitsu.com>
---
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 2fa545a..9f8d599 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -245,7 +245,8 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 		if (retval)
 			goto exit;
 
-		call_usermodehelper(argv[0], argv, env->envp, UMH_WAIT_EXEC);
+		retval = call_usermodehelper(argv[0], argv,
+					     env->envp, UMH_WAIT_EXEC);
 	}
 
 exit:



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