Re: [PATCH] getgrouplist.3: EXAMPLES: improve error handling for getpwnam(3)

[Alejandro Colomar <alx@kernel.org>]

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On Fri, Mar 29, 2024 at 03:21:11AM +0300, Fedor Lapshin wrote:
> Signed-off-by: Fedor Lapshin <fe.lap.prog@gmail.com>

Hi Fedor,

Patch applied, with some tweaks.  Thanks!

Have a lovely night!
Alex

> ---
>  man3/getgrouplist.3 | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/man3/getgrouplist.3 b/man3/getgrouplist.3
> index 41389b6c3..e2e640d56 100644
> --- a/man3/getgrouplist.3
> +++ b/man3/getgrouplist.3
> @@ -162,10 +162,12 @@ main(int argc, char *argv[])
>  \&
>      /* Fetch passwd structure (contains first group ID for user). */
>  \&
> +    errno = 0;
>      pw = getpwnam(argv[1]);
>      if (pw == NULL) {
> -        perror("getpwnam");
> -        exit(EXIT_SUCCESS);
> +        if (errno) perror("getpwnam");
> +        else fprintf(stderr, "no such user\en");
> +        exit(EXIT_FAILURE);
>      }
>  \&
>      /* Retrieve group list. */
> --
> 2.34.1
> 

-- 
<https://www.alejandro-colomar.es/>

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