[LTP] [PATCH v6 3/5] Add fchmodat2 fallback definition

[Petr Vorel]

> On 8/2/24 13:30, Petr Vorel wrote:
> > Hi Andrea,


> > > Reviewed-by: Petr Vorel <pvorel@suse.cz>
> > > Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
> > > ---
> > >   include/lapi/stat.h | 16 ++++++++++++++++
> > >   1 file changed, 16 insertions(+)
> > > diff --git a/include/lapi/stat.h b/include/lapi/stat.h
> > > index 3606c9eb0..8e38ecfef 100644
> > > --- a/include/lapi/stat.h
> > > +++ b/include/lapi/stat.h
> > > @@ -229,4 +229,20 @@ static inline int statx(int dirfd, const char *pathname, unsigned int flags,
> > >   # define STATX_ATTR_VERITY	0x00100000
> > >   #endif
> > > +#define SAFE_FCHMODAT2(dfd, filename, mode, flags) \
> > > +	safe_fchmodat2(__FILE__, __LINE__, (dfd), (filename), (mode), (flags))
> > > +
> > > +static inline int safe_fchmodat2(const char *file, const int lineno,
> > > +		int dfd, const char *filename, mode_t mode, int flags)
> > > +{
> > > +	int ret;
> > > +
> > > +	ret = tst_syscall(__NR_fchmodat2, dfd, filename, mode, flags);
> > > +	if (ret == -1)
> > > +		tst_brk_(file, lineno, TBROK | TERRNO, "%s(%d,%s,%d,%d) error",
> > > +			__func__, dfd, filename, mode, flags);
> > I'm sorry, I overlook that errno check is not needed. tst_syscall() does it
> > (see include/lapi/syscalls.h). Please remove it before merge.

> > With this:
> > Reviewed-by: Petr Vorel <pvorel@suse.cz>

> > Kind regards,
> > Petr

> As far as I see, tst_syscall() only handles ENOSYS and invalid syscalls, so
> it makes sense to handle TBROK | TERRNO inside the safe_* function.

Yes, I'm sorry, I was wrong. But in that case handling ret < -1 is missing.
I have sent a patch fixing this.

Kind regards,
Petr

> Andrea