From 6b2daec19094a90435abe67d16fb43b1a5527254 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 21 Apr 2019 18:53:50 -0400
Subject: [PATCH] fix compat handling of FICLONERANGE, FIDEDUPERANGE and
FS_IOC_FIEMAP
Git-commit: 6b2daec19094a90435abe67d16fb43b1a5527254
Patch-mainline: v5.5-rc1
References: bsc#1158459
Unlike FICLONE, all of those take a pointer argument; they do need
compat_ptr() applied to arg.
Fixes: d79bdd52d8be ("vfs: wire up compat ioctl for CLONE/CLONE_RANGE")
Fixes: 54dbc1517237 ("vfs: hoist the btrfs deduplication ioctl to the vfs")
Fixes: ceac204e1da9 ("fs: make fiemap work from compat_ioctl")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jan Kara <jack@suse.cz>
---
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 a7ec2d3dff92..e0226b2138d6 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1032,10 +1032,11 @@ 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:
--
2.16.4