linux-kernel - [PATCH 1/5] splice: Get rid of duplicate f

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Date:	Sun, 29 Sep 2013 15:14:34 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Alexander Viro <viro@...iv.linux.org.uk>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 1/5] splice: Get rid of duplicate f_mode checks

The do_splice() function was only called from sys_splice() but it
already checks the f_mode both for in and out.

Cc: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 fs/splice.c |    9 ---------
 1 file changed, 9 deletions(-)

diff --git a/fs/splice.c b/fs/splice.c
index 3b7ee656f3aa..320cc65585b2 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1333,12 +1333,6 @@ static long do_splice(struct file *in, loff_t __user *off_in,
 		if (off_in || off_out)
 			return -ESPIPE;
 
-		if (!(in->f_mode & FMODE_READ))
-			return -EBADF;
-
-		if (!(out->f_mode & FMODE_WRITE))
-			return -EBADF;
-
 		/* Splicing to self would be fun, but... */
 		if (ipipe == opipe)
 			return -EINVAL;
@@ -1358,9 +1352,6 @@ static long do_splice(struct file *in, loff_t __user *off_in,
 			offset = out->f_pos;
 		}
 
-		if (unlikely(!(out->f_mode & FMODE_WRITE)))
-			return -EBADF;
-
 		if (unlikely(out->f_flags & O_APPEND))
 			return -EINVAL;
 
-- 
1.7.9.2

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