NAME

       explain_getgrent_or_die - get group file entry and report errors

SYNOPSIS

       #include <libexplain/getgrent.h>
       struct group *explain_getgrent_or_die(void);
       struct group *explain_getgrent_on_error(void);

DESCRIPTION

       The  explain_getgrent_or_die  function  is  used  to  call the getgrent(3) system call. On
       failure an explanation will be printed to stderr, obtained  from  the  explain_getgrent(3)
       function, and then the process terminates by calling exit(EXIT_FAILURE).

       The  explain_getgrent_on_error  function  is  used to call the getgrent(3) system call. On
       failure an explanation will be printed to stderr, obtained  from  the  explain_getgrent(3)
       function, but still returns to the caller.

RETURN VALUE

       The  explain_getgrent_or_die  function  only  returns on success, see getgrent(3) for more
       information. On failure, prints an explanation and exits, it does not return.

       The explain_getgrent_on_error function always returns the  value  return  by  the  wrapped
       getgrent(3) system call.

EXAMPLE

       The  explain_getgrent_or_die  function  is intended to be used in a fashion similar to the
       following example:
              struct group *result = explain_getgrent_or_die();

SEE ALSO

       getgrent(3)
               get group file entry

       explain_getgrent(3)
               explain getgrent(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2013 Peter Miller

                                                                       explain_getgrent_or_die(3)