On 04/05/2020 16:43, Jens Axboe wrote: > On 5/4/20 6:31 AM, Pavel Begunkov wrote: >> On 04/05/2020 14:09, Jann Horn wrote: >>> On Sat, May 2, 2020 at 2:10 PM Pavel Begunkov <[email protected]> >>> wrote: >>>> export do_tee() for use in io_uring >>> [...] >>>> diff --git a/fs/splice.c b/fs/splice.c >>> [...] >>>> * The 'flags' used are the SPLICE_F_* variants, currently the only >>>> * applicable one is SPLICE_F_NONBLOCK. >>>> */ >>>> -static long do_tee(struct file *in, struct file *out, size_t len, >>>> - unsigned int flags) >>>> +long do_tee(struct file *in, struct file *out, size_t len, unsigned int >>>> flags) >>>> { >>>> struct pipe_inode_info *ipipe = get_pipe_info(in); >>>> struct pipe_inode_info *opipe = get_pipe_info(out); >>> >>> AFAICS do_tee() in its current form is not something you should be >>> making available to anything else, because the file mode checks are >>> performed in sys_tee() instead of in do_tee(). (And I don't see any >>> check for file modes in your uring patch, but maybe I missed it?) If >>> you want to make do_tee() available elsewhere, please refactor the >>> file mode checks over into do_tee(). >> >> Overlooked it indeed. Glad you found it > > Yeah indeed, that's a glaring oversight on my part too. Will you send > a patch for 5.7-rc as well for splice?
Absolutely -- Pavel Begunkov
