Re: [PATCH] nfsd: use correct format characters

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On Wed, Mar 16, 2022 at 11:09 PM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
>
> Hi--
>
> On 3/16/22 14:31, Bill Wendling wrote:
> > When compiling with -Wformat, clang emits the following warnings:
> >
> > fs/nfsd/flexfilelayout.c:120:27: warning: format specifies type 'unsigned
> > char' but the argument has type 'int' [-Wformat]
> >                          "%s.%hhu.%hhu", addr, port >> 8, port & 0xff);
> >                              ~~~~              ^~~~~~~~~
> >                              %d
> > fs/nfsd/flexfilelayout.c:120:38: warning: format specifies type 'unsigned
> > char' but the argument has type 'int' [-Wformat]
> >                          "%s.%hhu.%hhu", addr, port >> 8, port & 0xff);
> >                                   ~~~~                    ^~~~~~~~~~~
> >                                   %d
> >
> > The types of these arguments are unconditionally defined, so this patch
> > updates the format character to the correct ones for ints and unsigned
> > ints.
> >
> > Link: ClangBuiltLinux/linux#378
>
> Please make the Link: more complete, such as a URL/URI.
>
Done. I sent out v2 of the patch. Sorry about this oversight!

-bw

> > Signed-off-by: Bill Wendling <morbo@xxxxxxxxxx>
> > ---
> >  fs/nfsd/flexfilelayout.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/fs/nfsd/flexfilelayout.c b/fs/nfsd/flexfilelayout.c
> > index 2e2f1d5e9f62..070f90ed09b6 100644
> > --- a/fs/nfsd/flexfilelayout.c
> > +++ b/fs/nfsd/flexfilelayout.c
> > @@ -117,7 +117,7 @@ nfsd4_ff_proc_getdeviceinfo(struct super_block *sb, struct svc_rqst *rqstp,
> >
> >       da->netaddr.addr_len =
> >               snprintf(da->netaddr.addr, FF_ADDR_LEN + 1,
> > -                      "%s.%hhu.%hhu", addr, port >> 8, port & 0xff);
> > +                      "%s.%d.%d", addr, port >> 8, port & 0xff);
> >
> >       da->tightly_coupled = false;
> >
>
> thanks.
> --
> ~Randy



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