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From:   ebiederm@xmission.com (Eric W. Biederman)
To:     <linux-kernel@vger.kernel.org>
Cc:     David Miller <davem@davemloft.net>,
        Greg Kroah-Hartman <greg@kroah.com>,
        Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
        Alexei Starovoitov <alexei.starovoitov@gmail.com>,
        Kees Cook <keescook@chromium.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Alexei Starovoitov <ast@kernel.org>,
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        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
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Date:   Mon, 29 Jun 2020 15:03:41 -0500
In-Reply-To: <87bll17ili.fsf_-_@x220.int.ebiederm.org> (Eric W. Biederman's
        message of "Mon, 29 Jun 2020 14:55:05 -0500")
Message-ID: <87r1tx4p2a.fsf_-_@x220.int.ebiederm.org>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)
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Subject: [PATCH v2 09/15] umh: Stop calling do_execve_file
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


With the user mode driver code changed to not set subprocess_info.file
there are no more users of subproces_info.file.  Remove this field
from struct subprocess_info and remove the only user in
call_usermodehelper_exec_async that would call do_execve_file instead
of do_execve if file was set.

Link: https://lkml.kernel.org/r/877dvuf0i7.fsf_-_@x220.int.ebiederm.org
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
 include/linux/umh.h |  1 -
 kernel/umh.c        | 10 +++-------
 2 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/include/linux/umh.h b/include/linux/umh.h
index 73173c4a07e5..244aff638220 100644
--- a/include/linux/umh.h
+++ b/include/linux/umh.h
@@ -22,7 +22,6 @@ struct subprocess_info {
 	const char *path;
 	char **argv;
 	char **envp;
-	struct file *file;
 	int wait;
 	int retval;
 	int (*init)(struct subprocess_info *info, struct cred *new);
diff --git a/kernel/umh.c b/kernel/umh.c
index 3e4e453d45c8..6ca2096298b9 100644
--- a/kernel/umh.c
+++ b/kernel/umh.c
@@ -98,13 +98,9 @@ static int call_usermodehelper_exec_async(void *data)
 
 	commit_creds(new);
 
-	if (sub_info->file)
-		retval = do_execve_file(sub_info->file,
-					sub_info->argv, sub_info->envp);
-	else
-		retval = do_execve(getname_kernel(sub_info->path),
-				   (const char __user *const __user *)sub_info->argv,
-				   (const char __user *const __user *)sub_info->envp);
+	retval = do_execve(getname_kernel(sub_info->path),
+			   (const char __user *const __user *)sub_info->argv,
+			   (const char __user *const __user *)sub_info->envp);
 out:
 	sub_info->retval = retval;
 	/*
-- 
2.25.0