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[v6,01/43] fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP

Message ID 20191009191044.308087-1-arnd@arndb.de
State Accepted
Commit 6b2daec19094a90435abe67d16fb43b1a5527254
Headers show
Series [v6,01/43] fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP | expand

Commit Message

Arnd Bergmann Oct. 9, 2019, 7:10 p.m. UTC 
From: Al Viro <viro@zeniv.linux.org.uk>


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>

---
 fs/compat_ioctl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.20.0
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Patch

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: