NAME

       explain_getresuid_or_die - get r/e/s user IDs and report errors

SYNOPSIS

       #include <libexplain/getresuid.h>
       void explain_getresuid_or_die(uid_t *ruid, uid_t *euid, uid_t *suid);
       int explain_getresuid_on_error(uid_t *ruid, uid_t *euid, uid_t *suid);

DESCRIPTION

       The  explain_getresuid_or_die  function  is  used to call the getresuid(2) system call. On
       failure an explanation will be printed to stderr, obtained from  the  explain_getresuid(3)
       function, and then the process terminates by calling exit(EXIT_FAILURE).

       The  explain_getresuid_on_error  function is used to call the getresuid(2) system call. On
       failure an explanation will be printed to stderr, obtained from  the  explain_getresuid(3)
       function, but still returns to the caller.

       ruid    The ruid, exactly as to be passed to the getresuid(2) system call.

       euid    The euid, exactly as to be passed to the getresuid(2) system call.

       suid    The suid, exactly as to be passed to the getresuid(2) system call.

RETURN VALUE

       The  explain_getresuid_or_die  function only returns on success, see getresuid(2) for more
       information. On failure, prints an explanation and exits, it does not return.

       The explain_getresuid_on_error function always returns the value  return  by  the  wrapped
       getresuid(2) system call.

EXAMPLE

       The  explain_getresuid_or_die  function is intended to be used in a fashion similar to the
       following example:
              explain_getresuid_or_die(ruid, euid, suid);

SEE ALSO

       getresuid(2)
               get real, effective and saved user IDs

       explain_getresuid(3)
               explain getresuid(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2012 Peter Miller

                                                                      explain_getresuid_or_die(3)