linux-kernel - [PATCH v5 01/29] fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC

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Date:   Tue, 30 Jul 2019 21:25:12 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Alexander Viro <viro@...iv.linux.org.uk>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        "Darrick J. Wong" <darrick.wong@...cle.com>
Subject: [PATCH v5 01/29] fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP

From: Al Viro <viro@...iv.linux.org.uk>

Unlike FICLONE, all of those take a pointer argument; they do need
compat_ptr() applied to arg.

Fixes: d79bdd52d8be7 54dbc15172375 ceac204e1da94
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 fs/compat_ioctl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 6e30949d9f77..31104486fc8b 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1035,10 +1035,11 @@ COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
 #endif
 
 	case FICLONE:
+		goto do_ioctl;
 	case FICLONERANGE:
 	case FIDEDUPERANGE:
 	case FS_IOC_FIEMAP:
-		goto do_ioctl;
+		goto found_handler;
 
 	case FIBMAP:
 	case FIGETBSZ:
-- 
2.20.0