[libvirt] [PATCH] Fix getpwuid_r() usage

[Daniel P. Berrange]

On Thu, Jan 29, 2009 at 06:06:10PM -0800, john.levon at sun.com wrote:
> @@ -1485,7 +1485,14 @@ char *virGetUserDirectory(virConnectPtr 
>          return NULL;
>      }
>  
> -    if (getpwuid_r(uid, &pwbuf, strbuf, strbuflen, &pw) != 0) {
> +    /*
> +     * From the manpage (terrifying but true):
> +     *
> +     * ERRORS
> +     *  0 or ENOENT or ESRCH or EBADF or EPERM or ...
> +     *        The given name or uid was not found.
> +     */
> +    if (getpwuid_r(uid, &pwbuf, strbuf, strbuflen, &pw) != 0 || pw == NULL)
>          virReportSystemError(conn, errno,
>                               _("Failed to find user record for uid '%d'"),
>                               uid);

Argh, I only read as far as

  "The  getpwnam_r()  and  getpwuid_r()  functions  return zero on success.
  In case of error, and  error number is returned"

So it returns 0 on success, except when 0 means failure :-(

ACK to your patch

Daniel
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