[LTP] [PATCH v12 1/3] lib/tst_uid: Remove spurious TERRNO from tst_get_free_gid success path

[Wei Gao]

On Thu, Jul 23, 2026 at 12:39:17PM +0000, Andrea Cervesato wrote:
> Hi Wei,
> 
> > tst_get_free_gid_() prints the found GID when it succeeds, but it
> > incorrectly includes TERRNO in tst_res_(). This prints whatever value
> > happens to be in errno (often 0 or a stale value) which is confusing in
> > a success path.
> > 
> > Remove the spurious TERRNO flag from the tst_res_() success message.
> > 
> > Signed-off-by: Wei Gao <wegao@suse.com>
> > ---
> >  lib/tst_uid.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/lib/tst_uid.c b/lib/tst_uid.c
> > index af4ef8cf7..b0b087362 100644
> > --- a/lib/tst_uid.c
> > +++ b/lib/tst_uid.c
> > @@ -24,7 +24,7 @@ gid_t tst_get_free_gid_(const char *file, const int lineno, gid_t skip)
> >  			continue;
> >  
> >  		if (errno == 0 || errno == ENOENT || errno == ESRCH) {
> > -			tst_res_(file, lineno, TINFO | TERRNO,
> > +			tst_res_(file, lineno, TINFO,
> >  				"Found unused GID %d", (int)ret);
> 
> uhm? technically it should print 0, ENOENT or ESRCH. That's what the
> statement is all about. Do you have a log showing what's the issue with it?

AI feedback error is misleading need remove in patch10 , so do you want add new AI
rule fix it?

Following is AI feedback:
https://patchwork.ozlabs.org/project/ltp/patch/20260707054804.24232-2-wegao@suse.com/
> +		if (errno == 0 || errno == ENOENT || errno == ESRCH) {
> +			tst_res_(file, lineno, TINFO | TERRNO,
> +				"Found unused UID %d", (int)ret);
> +			return ret;

When getpwuid() returns NULL with errno set to ENOENT or ESRCH, TERRNO
appends the errno string to the message, producing output like:
"Found unused UID 5: No such file or directory". The function succeeded,
so the error string is misleading. Should TERRNO be dropped here, or
should it be conditionally omitted when errno indicates "not found"?

> 
> --
> Andrea Cervesato
> SUSE QE Automation Engineer Linux
> andrea.cervesato@suse.com