NAME

       explain_setreuid_or_die - set the real and effective user ID and report errors

SYNOPSIS

       #include <libexplain/setreuid.h>
       void explain_setreuid_or_die(uid_t ruid, uid_t euid);
       int explain_setreuid_on_error(uid_t ruid, uid_t euid);

DESCRIPTION

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

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

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

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

RETURN VALUE

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

       The explain_setreuid_on_error function always returns the  value  return  by  the  wrapped
       setreuid(2) system call.

EXAMPLE

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

SEE ALSO

       setreuid(2)
               set the real and effective user ID

       explain_setreuid(3)
               explain setreuid(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2012 Peter Miller

                                                                       explain_setreuid_or_die(3)