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

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

[Fedor Lapshin]

Signed-off-by: Fedor Lapshin <fe.lap.prog@gmail.com>
---
 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

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

[Fedor Lapshin]

For some reason my mail client decided to not reply to the previous thread.
Yet again, sorry for the mess. This patch was related to our previous
discussion on getgrouplist

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

[Alejandro Colomar]

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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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