Commit 6b2daec1 authored Apr 21, 2019 by Al Viro Committed by Arnd Bergmann Oct 23, 2019

fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP



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

Fixes: d79bdd52 ("vfs: wire up compat ioctl for CLONE/CLONE_RANGE")
Fixes: 54dbc151 ("vfs: hoist the btrfs deduplication ioctl to the vfs")
Fixes: ceac204e ("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>

parent 2952db0f

fs/compat_ioctl.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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:

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