Commit 8aa5c23e authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Greg Kroah-Hartman
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fuse: verify write return 



commit 8aab336b upstream.

Make sure filesystem is not returning a bogus number of bytes written.

Fixes: ea9b9907 ("fuse: implement perform_write")
Cc: <stable@vger.kernel.org> # v2.6.26
Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ba916a13

fs/fuse/file.c

+2 −0
Original line number Diff line number Diff line
@@ -1098,6 +1098,8 @@ static ssize_t fuse_send_write_pages(struct fuse_io_args *ia, 
	ia->write.in.flags = fuse_write_flags(iocb);



	err = fuse_simple_request(fc, &ap->args);

	if (!err && ia->write.out.size > count)

		err = -EIO;



	offset = ap->descs[0].offset;

	count = ia->write.out.size;