On 2019-06-25, Richard Ipsum <[email protected]> wrote:
> This fixes an error on OpenBSD,
>
> % chown 1000:1000 yes.c
> ./chown: getgrnam 1000: No such file or directory

POSIX says that if the entry cannot be found, errno shall not be
changed. Are you saying that OpenBSD doesn't behave this way?

> ---
>  chown.c | 18 ++----------------
>  1 file changed, 2 insertions(+), 16 deletions(-)
>
> diff --git a/chown.c b/chown.c
> index d7dc8e0..748ce97 100644
> --- a/chown.c
> +++ b/chown.c
> @@ -79,26 +79,12 @@ main(int argc, char *argv[])
>               *group++ = '\0';
>
>       if (owner && *owner) {
> -             errno = 0;
>               pw = getpwnam(owner);
> -             if (pw) {
> -                     uid = pw->pw_uid;
> -             } else {
> -                     if (errno)
> -                             eprintf("getpwnam %s:", owner);
> -                     uid = estrtonum(owner, 0, UINT_MAX);
> -             }
> +             uid = pw ? pw->pw_uid : estrtonum(owner, 0, UINT_MAX);

It looks like there is no error with getpwnam, only with getgrname, right?

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