Beispiel #1
0
void ei_link(listener_t *listener, erlang_pid * from, erlang_pid * to)
{
	char msgbuf[2048];
	char *s;
	int index = 0;
	int ret;

	index = 5;					/* max sizes: */
	ei_encode_version(msgbuf, &index);	/*   1 */
	ei_encode_tuple_header(msgbuf, &index, 3);
	ei_encode_long(msgbuf, &index, ERL_LINK);
	ei_encode_pid(msgbuf, &index, from);	/* 268 */
	ei_encode_pid(msgbuf, &index, to);	/* 268 */

	/* 5 byte header missing */
	s = msgbuf;
	put32be(s, index - 4);		/*   4 */
	put8(s, ERL_PASS_THROUGH);	/*   1 */
	/* sum:  542 */

	switch_mutex_lock(listener->sock_mutex);
#ifdef WIN32
	ret = send(listener->sockfd, msgbuf, index, 0);
#else
	ret = write(listener->sockfd, msgbuf, index);
#endif
	switch_mutex_unlock(listener->sock_mutex);
}
void ei_link(listener_t *listener, erlang_pid * from, erlang_pid * to)
{
	char msgbuf[2048];
	char *s;
	int index = 0;

	index = 5;					/* max sizes: */
	ei_encode_version(msgbuf, &index);	/*   1 */
	ei_encode_tuple_header(msgbuf, &index, 3);
	ei_encode_long(msgbuf, &index, ERL_LINK);
	ei_encode_pid(msgbuf, &index, from);	/* 268 */
	ei_encode_pid(msgbuf, &index, to);	/* 268 */

	/* 5 byte header missing */
	s = msgbuf;
	put32be(s, index - 4);		/*   4 */
	put8(s, ERL_PASS_THROUGH);	/*   1 */
	/* sum:  542 */

	switch_mutex_lock(listener->sock_mutex);
#ifdef WIN32
	send(listener->sockfd, msgbuf, index, 0);
#else
	if (write(listener->sockfd, msgbuf, index) == -1) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to link to process on %s\n", listener->peer_nodename);
	}
#endif
	switch_mutex_unlock(listener->sock_mutex);
}
Beispiel #3
0
void ei_link(listener_t *listener, erlang_pid * from, erlang_pid * to)
{
	char msgbuf[2048];
	char *s;
	int index = 0;
	switch_socket_t *sock = NULL;
	switch_os_sock_put(&sock, &listener->sockdes, listener->pool);

	index = 5;					/* max sizes: */
	ei_encode_version(msgbuf, &index);	/*   1 */
	ei_encode_tuple_header(msgbuf, &index, 3);
	ei_encode_long(msgbuf, &index, ERL_LINK);
	ei_encode_pid(msgbuf, &index, from);	/* 268 */
	ei_encode_pid(msgbuf, &index, to);	/* 268 */

	/* 5 byte header missing */
	s = msgbuf;
	put32be(s, index - 4);		/*   4 */
	put8(s, ERL_PASS_THROUGH);	/*   1 */
	/* sum:  542 */

	switch_mutex_lock(listener->sock_mutex);
	if (switch_socket_send(sock, msgbuf, (switch_size_t *) &index)) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to link to process on %s\n", listener->peer_nodename);
	}
	switch_mutex_unlock(listener->sock_mutex);
}
Beispiel #4
0
/* this sends either link or unlink ('which' decides) */
static int link_unlink(int fd, const erlang_pid *from, const erlang_pid *to,
		       int which, unsigned ms)
{
  char msgbuf[EISMALLBUF];
  char *s;
  int index = 0;
  int n;

  index = 5;                                     /* max sizes: */
  ei_encode_version(msgbuf,&index);                     /*   1 */
  ei_encode_tuple_header(msgbuf,&index,3);
  ei_encode_long(msgbuf,&index,which);
  ei_encode_pid(msgbuf,&index,from);                    /* 268 */
  ei_encode_pid(msgbuf,&index,to);                      /* 268 */

  /* 5 byte header missing */
  s = msgbuf;
  put32be(s, index - 4);                                /*   4 */
  put8(s, ERL_PASS_THROUGH);                            /*   1 */
                                                  /* sum:  542 */


#ifdef DEBUG_DIST
  if (ei_trace_distribution > 1) ei_show_sendmsg(stderr,msgbuf,NULL);
#endif

  n = ei_write_fill_t(fd,msgbuf,index,ms); 

  return (n==index ? 0 : -1);
}
Beispiel #5
0
int ei_x_encode_pid(ei_x_buff* x, const erlang_pid* pid)
{
    int i = x->index;
    ei_encode_pid(NULL, &i, pid);
    if (!x_fix_buff(x, i))
	return -1;
    return ei_encode_pid(x->buff, &x->index, pid);
}
Beispiel #6
0
int ei_encode_fun(char *buf, int *index, const erlang_fun *p)
{
    int ix = *index;

    if (p->arity == -1) {
	/* ERL_FUN_EXT */
	if (buf != NULL) {
	    char* s = buf + ix;
	    put8(s, ERL_FUN_EXT);
	    put32be(s, p->n_free_vars);
	}
	ix += sizeof(char) + 4;
	if (ei_encode_pid(buf, &ix, &p->pid) < 0)
	    return -1;
	if (ei_encode_atom_as(buf, &ix, p->module, ERLANG_UTF8, p->module_org_enc) < 0)
	    return -1;
	if (ei_encode_long(buf, &ix, p->index) < 0)
	    return -1;
	if (ei_encode_long(buf, &ix, p->uniq) < 0)
	    return -1;
	if (buf != NULL)
	    memcpy(buf + ix, p->free_vars, p->free_var_len);
	ix += p->free_var_len;
    } else {
	char *size_p;
	/* ERL_NEW_FUN_EXT */
	if (buf != NULL) {
	    char* s = buf + ix;
	    put8(s, ERL_NEW_FUN_EXT);
	    size_p = s;
	    s += 4;
	    put8(s, p->arity);
	    memcpy(s, p->md5, sizeof(p->md5));
	    s += sizeof(p->md5);
	    put32be(s, p->index);
	    put32be(s, p->n_free_vars);
	} else
	    size_p = NULL;
	ix += 1 + 4 + 1 + sizeof(p->md5) + 4 + 4;
	if (ei_encode_atom_as(buf, &ix, p->module, ERLANG_UTF8, p->module_org_enc) < 0)
	    return -1;
	if (ei_encode_long(buf, &ix, p->old_index) < 0)
	    return -1;
	if (ei_encode_long(buf, &ix, p->uniq) < 0)
	    return -1;
	if (ei_encode_pid(buf, &ix, &p->pid) < 0)
	    return -1;
	if (buf != NULL)
	    memcpy(buf + ix, p->free_vars, p->free_var_len);
	ix += p->free_var_len;
	if (size_p != NULL) {
	    int sz = buf + ix - size_p;
	    put32be(size_p, sz);
	}
    }
    *index = ix;
    return 0;
}
Beispiel #7
0
ETERM *erl_global_whereis(int fd, const char *name, char *node)
{
  char buf[EISMALLBUF];
  char *bufp=buf;
  char tmpbuf[64];
  int index = 0;
  erlang_pid *self = erl_self();
  erlang_pid epid;
  ETERM *opid;
  erlang_msg msg;
  int i;
  int version,arity,msglen;

  self->num = fd;		/* FIXME looks strange to change something?! */

  ei_encode_version(buf,&index);
  ei_encode_tuple_header(buf,&index,2);
  ei_encode_pid(buf,&index,self);               /* PidFrom */
  ei_encode_tuple_header(buf,&index,5);
  ei_encode_atom(buf,&index,"call");            /* call */
  ei_encode_atom(buf,&index,"global");          /* Mod */
  ei_encode_atom(buf,&index,"whereis_name");    /* Fun */
  ei_encode_list_header(buf,&index,1);          /* Args: [ name ] */
  ei_encode_atom(buf,&index,name);
  ei_encode_empty_list(buf,&index);
  ei_encode_atom(buf,&index,"user");            /* user */

  /* make the rpc call */
  if (ei_send_reg_encoded(fd,self,"rex",buf,index)) return NULL;

  while (1) {
    index = EISMALLBUF;
    if (!(i = ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) continue;
    else break;
  }

  if (i != ERL_SEND) return NULL;
    
  /* expecting { rex, pid } */
  index = 0;
  if (ei_decode_version(buf,&index,&version) 
      || ei_decode_tuple_header(buf,&index,&arity) 
      || (arity != 2) 
      || ei_decode_atom(buf,&index,tmpbuf) 
      || strcmp(tmpbuf,"rex")
      || ei_decode_pid(buf,&index,&epid))
    return NULL; /* bad response from other side */

  /* put the pid into a format for the caller */
  index = 0;
  ei_encode_pid(buf,&index,&epid);
  opid = erl_decode((unsigned char*)buf);

  /* extract the nodename for the caller */
  if (node) strcpy(node,epid.node);

  return opid;
}
Beispiel #8
0
int ei_send_exit_tmo(int fd, const erlang_pid *from, const erlang_pid *to,
		     const char *reason, unsigned ms)
{
  char sbuf[EISMALLBUF];
  erlang_trace *token = NULL;
  char *dbuf = NULL;
  char *msgbuf;
  char *s;
  int index = 0;
  int len = strlen(reason) + 1080; /* see below */

  if (len > EISMALLBUF)
    if (!(dbuf = malloc(len)))
      return -1;
  msgbuf = (dbuf ? dbuf : sbuf);


  /* are we tracing? */
  /* check that he can receive trace tokens first */
  if (ei_distversion(fd) > 0) token = ei_trace(0,NULL);

  index = 5;                                     /* max sizes: */
  ei_encode_version(msgbuf,&index);                     /*   1 */
  if (token) {
    ei_encode_tuple_header(msgbuf,&index,5);            /*   2 */
    ei_encode_long(msgbuf,&index,ERL_EXIT_TT);          /*   2 */
  }
  else {
    ei_encode_tuple_header(msgbuf,&index,4);
    ei_encode_long(msgbuf,&index,ERL_EXIT);
  }
  ei_encode_pid(msgbuf,&index,from);                    /* 268 */
  ei_encode_pid(msgbuf,&index,to);                      /* 268 */

  if (token) ei_encode_trace(msgbuf,&index,token);      /* 534 */

  /* Reason */
  ei_encode_string(msgbuf,&index,reason);               /* len */

  /* 5 byte header missing */
  s = msgbuf;
  put32be(s, index - 4);                                /*   4 */
  put8(s, ERL_PASS_THROUGH);                                /*   1 */
                                          /*** sum: len + 1080 */
  /* FIXME incorrect level */
  if (ei_tracelevel > 1)
      ei_show_sendmsg(stderr,msgbuf,NULL);

  ei_write_fill_t(fd,msgbuf,index,ms); 
  /* FIXME ignore timeout etc? erl_errno?! */

  if (dbuf) free(dbuf);
  return 0;
}
Beispiel #9
0
/* length (4), PASS_THROUGH (1), header, message */
int ei_ei_send_reg_encoded(ei_cnode* ec, int fd, const erlang_pid *from,
			   const char *to, const char *msg, int msglen)
{
  char *s, header[1400]; /* see size calculation below */
  erlang_trace *token = NULL;
  int index = 5; /* reserve 5 bytes for control message */
#ifdef HAVE_WRITEV
  struct iovec v[2];
#endif

  /* are we tracing? */
  /* check that he can receive trace tokens first */
  if (ei_distversion(fd) > 0)
    token = ei_trace(0,(erlang_trace *)NULL);

  /* header = REG_SEND, from, cookie, toname         max sizes: */
  ei_encode_version(header,&index);                     /*   1 */
  if (token) { 
    ei_encode_tuple_header(header,&index,5);            /*   2 */
    ei_encode_long(header,&index,ERL_REG_SEND_TT);      /*   2 */
  } else {
    ei_encode_tuple_header(header,&index,4);    
    ei_encode_long(header,&index,ERL_REG_SEND); 
  }
  ei_encode_pid(header,&index,from);                    /* 268 */
  ei_encode_atom(header,&index,"" /*ei_getfdcookie(ec, fd)*/ );       /* 258 */
  ei_encode_atom(header,&index,to);                     /* 268 */

  if (token) ei_encode_trace(header,&index,token);      /* 534 */

  /* control message (precedes header actually) */
  /* length = 1 ('p') + header len + message len */
  s = header;
  put32be(s, index + msglen - 4);                       /*   4 */
  put8(s, ERL_PASS_THROUGH);                                /*   1 */
                                                /*** sum: 1336 */
  
#ifdef DEBUG_DIST
  if (ei_trace_distribution > 0) ei_show_sendmsg(stderr,header,msg);
#endif
  
#ifdef HAVE_WRITEV

  v[0].iov_base = (char *)header;
  v[0].iov_len = index;
  v[1].iov_base = (char *)msg;
  v[1].iov_len = msglen;

  if (writev(fd,v,2) != index+msglen) return -1;
  
#else
  
  /* no writev() */
  if (writesocket(fd,header,index) != index) return -1;
  if (writesocket(fd,msg,msglen) != msglen) return -1;

#endif

  return 0;
}
void ei_link(ei_node_t *ei_node, erlang_pid * from, erlang_pid * to) {
    char msgbuf[2048];
    char *s;
    int index = 0;

    index = 5; /* max sizes: */
    ei_encode_version(msgbuf, &index); /*   1 */
    ei_encode_tuple_header(msgbuf, &index, 3);
    ei_encode_long(msgbuf, &index, ERL_LINK);
    ei_encode_pid(msgbuf, &index, from); /* 268 */
    ei_encode_pid(msgbuf, &index, to); /* 268 */

    /* 5 byte header missing */
    s = msgbuf;
    put32be(s, index - 4); /*   4 */
    put8(s, ERL_PASS_THROUGH); /*   1 */
    /* sum:  542 */

    if (write(ei_node->nodefd, msgbuf, index) == -1) {
        switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to link to process on %s\n", ei_node->peer_nodename);
    }
}
Beispiel #11
0
int oe_ei_encode_pid(CORBA_Environment *ev, const erlang_pid *p) {
  int size = ev->_iout;
  
  (int) ei_encode_pid(NULL, &size, p);

  if (size >= ev->_outbufsz) {
    char *buf = ev->_outbuf;
    int bufsz = ev->_outbufsz + ev->_memchunk;
    
    while (size >= bufsz)
      bufsz += ev->_memchunk;
    
    if ((buf = realloc(buf, bufsz)) == NULL) {
      CORBA_exc_set(ev, CORBA_SYSTEM_EXCEPTION, NO_MEMORY, "End of heap memory while encoding");
      return -1;  /* OUT OF MEMORY */ 
    }
    
    ev->_outbuf = buf;
    ev->_outbufsz = bufsz;
  }

  return ei_encode_pid(ev->_outbuf, &ev->_iout, p);
}
Beispiel #12
0
int ei_encode_trace(char *buf, int *index, const erlang_trace *p)
{
  /* { Flags, Label, Serial, FromPid, Prev } */
  ei_encode_tuple_header(buf,index,5);
  ei_encode_long(buf,index,p->flags);
  ei_encode_long(buf,index,p->label);
  ei_encode_long(buf,index,p->serial);
  ei_encode_pid(buf,index,&p->from);
  ei_encode_long(buf,index,p->prev);

  /* index is updated by the functions we called */
  
  return 0;
}
Beispiel #13
0
static int mn_send_commit(int fd, erlang_pid *mnesia, erlang_pid *self)
{
  char buf[EISMALLBUF];
  char *bufp=buf;
  char string[256];
  int index = 0;
  int version,arity;
  int msglen;
  erlang_msg msg;
  int i;
  
  /* set up commit message { commit, self() } */
  ei_encode_version(buf,&index);
  ei_encode_tuple_header(buf,&index,2);
  ei_encode_atom(buf,&index,EI_MNESIA_COMMIT);
  ei_encode_pid(buf,&index,self);

  /* send it */
  if (ei_send_encoded(fd,mnesia,buf,index)) return -1;

  /* get reply */
  while (1) {
    index = EISMALLBUF;
    if (!(i=ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) continue;
    else if (i < 0) return -1;
    else break;
  }
  
  if (i == ERL_SEND) {
    index = 0;
    if (ei_decode_version(buf,&index,&version) 
	|| ei_decode_tuple_header(buf,&index,&arity) 
	|| ei_decode_atom(buf,&index,string))
      return -1;

    if (!strcmp(string,"ok")) return 0;
  }
  /* wrong message type */
  return -1;
}
Beispiel #14
0
int erl_global_register(int fd, const char *name, ETERM *pid)
{
  char buf[EISMALLBUF];
  char *bufp=buf;
  char tmpbuf[64];
  int index = 0;
  erlang_pid self;
  erlang_msg msg;
  int needlink, needatom, needmonitor;
  int arity;
  int version;
  int msglen;
  int i;

  /* get that pid into a better format */
  if (!erl_encode(pid,(unsigned char*)buf)) return -1;
  if (ei_decode_version(buf,&index,&version)
      || ei_decode_pid(buf,&index,&self)) return -1;
  
  /* set up rpc arguments */
  /* { PidFrom, { call, Mod, Fun, Args, user }}  */
  index = 0;
  ei_encode_version(buf,&index);
  ei_encode_tuple_header(buf,&index,2);
  ei_encode_pid(buf,&index,&self);               /* PidFrom */
  ei_encode_tuple_header(buf,&index,5);
  ei_encode_atom(buf,&index,"call");            /* call */
  ei_encode_atom(buf,&index,"global");          /* Mod */
  ei_encode_atom(buf,&index,"register_name_external");    /* Fun */
  ei_encode_list_header(buf,&index,3);     /* Args: [ name, self(), cnode ] */
  ei_encode_atom(buf,&index,name);
  ei_encode_pid(buf,&index,&self); 
  ei_encode_tuple_header(buf,&index,2);
  ei_encode_atom(buf,&index,"global"); /* special "resolve" treatment */ 
  ei_encode_atom(buf,&index,"cnode");  /* i.e. we get a SEND when conflict */
  ei_encode_empty_list(buf,&index);
  ei_encode_atom(buf,&index,"user");            /* user */

  /* make the rpc call */
  if (ei_send_reg_encoded(fd,&self,"rex",buf,index)) return -1;

  /* get the reply: expect link and an atom, or just an atom */
  needlink = needatom = needmonitor = 1;
  while (1) {
    /* get message */
    while (1) {
      index = EISMALLBUF;
      if (!(i = ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) continue;
      else break;
    }

    switch (i) {
    case ERL_LINK:
      /* got link */
      if (!needlink) return -1;
      needlink = 0;
      break;
      
    case ERL_MONITOR_P-10:
      /* got monitor */
	if (!needmonitor) { return -1;}
	needmonitor = 0;
      break;

    case ERL_SEND:
      /* got message - does it contain our atom? */
      if (!needatom) return -1;
      else {
	/* expecting { rex, yes } */
	index = 0;
	if (ei_decode_version(buf,&index,&version) 
	    || ei_decode_tuple_header(buf,&index,&arity) 
	    || (arity != 2) 
	    || ei_decode_atom(buf,&index,tmpbuf) 
	    || strcmp(tmpbuf,"rex")
	    || ei_decode_atom(buf,&index,tmpbuf) 
	    || strcmp(tmpbuf,"yes"))
	  return -1; /* bad response from other side */

	/* we're done */
	return 0;
      }
      break;
      
    default:
      return -1; /* something else */
    }
  }
  return 0;
}
Beispiel #15
0
int main(void)
#endif
{
  ErlConnect conp;
  Erl_IpAddr thisipaddr = (Erl_IpAddr)0;
  FILE *fp = (FILE *)0;
  char* charp = "foo";
  double *doublep = NULL;
  double doublex = 0.0;
  ei_cnode xec;
  ei_reg *ei_regp = NULL;
  ei_term eterm;
  ei_x_buff eix;
  erlang_big *bigp = NULL;
  erlang_fun efun;
  erlang_msg *msgp = NULL;
  erlang_msg emsg;
  erlang_pid *pidp = NULL;
  erlang_pid epid;
  erlang_port eport;
  erlang_ref eref;
  erlang_trace etrace;
  int *intp = NULL;
  int intx = 0;
  long *longp = NULL;
  long longx = 0;
  short creation = 0;
  struct ei_reg_stat *ei_reg_statp = NULL;
  struct ei_reg_tabstat *ei_reg_tabstatp = NULL;
  struct hostent *hostp = NULL;
  unsigned char * ucharp = (unsigned char *)"foo";
  unsigned long *ulongp = NULL;
  unsigned long ulongx = 0;
  void *voidp = NULL;
#ifndef VXWORKS
  EI_LONGLONG *longlongp = (EI_LONGLONG*)NULL;
  EI_LONGLONG longlongx = 0;
  EI_ULONGLONG *ulonglongp = (EI_ULONGLONG*)NULL;
  EI_ULONGLONG ulonglongx = 0;
#endif
  enum erlang_char_encoding enc;

  intx = erl_errno;

  ei_connect_init(&xec, charp, charp, creation);
  ei_connect_xinit (&xec, charp, charp, charp, thisipaddr, charp, creation);

  ei_connect(&xec, charp);
  ei_xconnect (&xec, thisipaddr, charp);

  ei_receive(intx, ucharp, intx);
  ei_receive_msg(intx, &emsg, &eix);
  ei_xreceive_msg(intx, &emsg, &eix);

  ei_send(intx, &epid, charp, intx);
  ei_reg_send(&xec, intx, charp, charp, intx);

  ei_rpc(&xec, intx, charp, charp, charp, intx, &eix);
  ei_rpc_to(&xec, intx, charp, charp, charp, intx);
  ei_rpc_from(&xec, intx, intx, &emsg, &eix);

  ei_publish(&xec, intx);
  ei_accept(&xec, intx, &conp);
  ei_unpublish(&xec);

  ei_thisnodename(&xec);
  ei_thishostname(&xec);
  ei_thisalivename(&xec);

  ei_self(&xec);

  ei_gethostbyname(charp);
  ei_gethostbyaddr(charp, intx, intx);
  ei_gethostbyname_r(charp, hostp, charp, intx, intp);
  ei_gethostbyaddr_r(charp, intx, intx, hostp, charp, intx, intp);

  ei_encode_version(charp, intp);
  ei_x_encode_version(&eix);
  ei_encode_long(charp, intp, longx);
  ei_x_encode_long(&eix, longx);
  ei_encode_ulong(charp, intp, ulongx);
  ei_x_encode_ulong(&eix, ulongx);
  ei_encode_double(charp, intp, doublex);
  ei_x_encode_double(&eix, doublex);
  ei_encode_boolean(charp, intp, intx);
  ei_x_encode_boolean(&eix, intx);
  ei_encode_char(charp, intp, 'a');
  ei_x_encode_char(&eix, 'a');
  ei_encode_string(charp, intp, charp);
  ei_encode_string_len(charp, intp, charp, intx);
  ei_x_encode_string(&eix, charp);
  ei_x_encode_string_len(&eix, charp, intx);
  ei_encode_atom(charp, intp, charp);
  ei_encode_atom_as(charp, intp, charp, ERLANG_LATIN1, ERLANG_UTF8);
  ei_encode_atom_len(charp, intp, charp, intx);
  ei_encode_atom_len_as(charp, intp, charp, intx, ERLANG_ASCII, ERLANG_LATIN1);
  ei_x_encode_atom(&eix, charp);
  ei_x_encode_atom_as(&eix, charp, ERLANG_LATIN1, ERLANG_UTF8);
  ei_x_encode_atom_len(&eix, charp, intx);
  ei_x_encode_atom_len_as(&eix, charp, intx, ERLANG_LATIN1, ERLANG_UTF8);
  ei_encode_binary(charp, intp, (void *)0, longx);
  ei_x_encode_binary(&eix, (void*)0, intx);
  ei_encode_pid(charp, intp, &epid);
  ei_x_encode_pid(&eix, &epid);
  ei_encode_fun(charp, intp, &efun);
  ei_x_encode_fun(&eix, &efun);
  ei_encode_port(charp, intp, &eport);
  ei_x_encode_port(&eix, &eport);
  ei_encode_ref(charp, intp, &eref);
  ei_x_encode_ref(&eix, &eref);
  ei_encode_trace(charp, intp, &etrace);
  ei_x_encode_trace(&eix, &etrace);
  ei_encode_tuple_header(charp, intp, intx);
  ei_x_encode_tuple_header(&eix, longx);
  ei_encode_list_header(charp, intp, intx);
  ei_x_encode_list_header(&eix, longx);
/* #define ei_encode_empty_list(buf,i) ei_encode_list_header(buf,i,0) */
  ei_x_encode_empty_list(&eix);

  ei_get_type(charp, intp, intp, intp);
  ei_get_type_internal(charp, intp, intp, intp);

  ei_decode_version(charp, intp, intp);
  ei_decode_long(charp, intp, longp);
  ei_decode_ulong(charp, intp, ulongp);
  ei_decode_double(charp, intp, doublep);
  ei_decode_boolean(charp, intp, intp);
  ei_decode_char(charp, intp, charp);
  ei_decode_string(charp, intp, charp);
  ei_decode_atom(charp, intp, charp);
  ei_decode_atom_as(charp, intp, charp, MAXATOMLEN_UTF8, ERLANG_WHATEVER, &enc, &enc);
  ei_decode_binary(charp, intp, (void *)0, longp);
  ei_decode_fun(charp, intp, &efun);
  free_fun(&efun);
  ei_decode_pid(charp, intp, &epid);
  ei_decode_port(charp, intp, &eport);
  ei_decode_ref(charp, intp, &eref);
  ei_decode_trace(charp, intp, &etrace);
  ei_decode_tuple_header(charp, intp, intp);
  ei_decode_list_header(charp, intp, intp);

  ei_decode_ei_term(charp, intp, &eterm);

  ei_print_term(fp, charp, intp);
  ei_s_print_term(&charp, charp, intp);

  ei_x_format(&eix, charp);
  ei_x_format_wo_ver(&eix, charp);

  ei_x_new(&eix);
  ei_x_new_with_version(&eix);
  ei_x_free(&eix);
  ei_x_append(&eix, &eix);
  ei_x_append_buf(&eix, charp, intx);
  ei_skip_term(charp, intp);

  ei_reg_open(intx);
  ei_reg_resize(ei_regp, intx);
  ei_reg_close(ei_regp);

  ei_reg_setival(ei_regp, charp, longx);
  ei_reg_setfval(ei_regp, charp, doublex);
  ei_reg_setsval(ei_regp, charp, charp);
  ei_reg_setpval(ei_regp, charp, voidp, intx);

  ei_reg_setval(ei_regp, charp, intx);

  ei_reg_getival(ei_regp, charp);
  ei_reg_getfval(ei_regp, charp);
  ei_reg_getsval(ei_regp, charp);
  ei_reg_getpval(ei_regp, charp, intp);

  ei_reg_getval(ei_regp, charp, intx);

  ei_reg_markdirty(ei_regp, charp);

  ei_reg_delete(ei_regp, charp);

  ei_reg_stat(ei_regp, charp, ei_reg_statp);

  ei_reg_tabstat(ei_regp, ei_reg_tabstatp);

  ei_reg_dump(intx, ei_regp, charp, intx);
  ei_reg_restore(intx, ei_regp, charp);
  ei_reg_purge(ei_regp);

#if defined(HAVE_GMP_H) && defined(HAVE_LIBGMP)
  {
      mpz_t obj;
      ei_decode_bignum(charp, intp, obj);
      ei_encode_bignum(charp, intp, obj);
      ei_x_encode_bignum(&eix, obj);
  }
#endif /* HAVE_GMP_H && HAVE_LIBGMP */

#ifndef VXWORKS

  ei_decode_longlong(charp, intp, longlongp);
  ei_decode_ulonglong(charp, intp, ulonglongp);
  ei_encode_longlong(charp, intp, longlongx);
  ei_encode_ulonglong(charp, intp, ulonglongx);
  ei_x_encode_longlong(&eix, longlongx);
  ei_x_encode_ulonglong(&eix, ulonglongx);

#endif

#ifdef USE_EI_UNDOCUMENTED

  ei_decode_intlist(charp, intp, longp, intp);

  ei_receive_encoded(intx, &charp, intp, msgp, intp);
  ei_send_encoded(intx, pidp, charp, intx);
  ei_send_reg_encoded(intx, pidp, charp, charp, intx);

  ei_decode_big(charp, intp, bigp);
  ei_big_comp(bigp, bigp);
  ei_big_to_double(bigp, doublep);
  ei_small_to_big(intx, bigp);
  ei_alloc_big(intx);
  ei_free_big(bigp);

#endif /* USE_EI_UNDOCUMENTED */

  return
      BUFSIZ +
      EAGAIN +
      EHOSTUNREACH +
      EIO +
      EI_BIN +
      EI_DELET +
      EI_DIRTY +
      EI_FLT +
      EI_FORCE +
      EI_INT +
      EI_NOPURGE +
      EI_STR +
      EMSGSIZE +
      ENOMEM +
      ERL_ERROR +
      ERL_EXIT +
      ERL_LINK +
      ERL_MSG +
      ERL_NO_TIMEOUT +
      ERL_REG_SEND +
      ERL_SEND +
      ERL_TICK +
      ERL_TIMEOUT +
      ERL_UNLINK +
      ETIMEDOUT +
      MAXATOMLEN;
}
Beispiel #16
0
int ei_send_encoded_tmo(int fd, const erlang_pid *to, 
			char *msg, int msglen, unsigned ms) 
{
    char *s, header[1200]; /* see size calculation below */
    erlang_trace *token = NULL;
    int index = 5; /* reserve 5 bytes for control message */
    int res;
#ifdef HAVE_WRITEV
    struct iovec v[2];
#endif

    /* are we tracing? */
    /* check that he can receive trace tokens first */
    if (ei_distversion(fd) > 0) token = ei_trace(0,NULL);
    
    /* header = SEND, cookie, to                      max sizes: */
    ei_encode_version(header,&index);		      /*   1 */
    if (token) {
	ei_encode_tuple_header(header,&index,4);      /*   2 */
	ei_encode_long(header,&index,ERL_SEND_TT);    /*   2 */
    } else {
	ei_encode_tuple_header(header,&index,3);
	ei_encode_long(header,&index,ERL_SEND); 
    }
    ei_encode_atom(header,&index,ei_getfdcookie(fd)); /* 258 */
    ei_encode_pid(header,&index,to);		      /* 268 */
    
    if (token) ei_encode_trace(header,&index,token);  /* 534 */
    
    /* control message (precedes header actually) */
    /* length = 1 ('p') + header len + message len */
    s = header;
    put32be(s, index + msglen - 4);		      /*   4 */
    put8(s, ERL_PASS_THROUGH);			      /*   1 */
				/*** sum: 1070 */

    if (ei_tracelevel >= 4)
	ei_show_sendmsg(stderr,header,msg);

#ifdef HAVE_WRITEV
    
    v[0].iov_base = (char *)header;
    v[0].iov_len = index;
    v[1].iov_base = (char *)msg;
    v[1].iov_len = msglen;
    
    if ((res = ei_writev_fill_t(fd,v,2,ms)) != index+msglen) {
	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
	return -1;
    }
  
#else  /* !HAVE_WRITEV */
  
    if ((res = ei_write_fill_t(fd,header,index,ms)) != index) { 
	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
	return -1;
    }
    if ((res = ei_write_fill_t(fd,msg,msglen,ms)) != msglen) { 
	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
	return -1;
    }

#endif  /* !HAVE_WRITEV */

    return 0;
}
Beispiel #17
0
static int mn_start_restore(int fd, const erlang_pid *self, erlang_pid *mnesia, const char *mntab, long *count, long *maxkey,long *maxobj)
{
  char buf[EISMALLBUF];
  char *bufp=buf;
  char tmpbuf[64];
  int index = 0;
  erlang_msg msg;
  int arity;
  int version;
  int i;
  int needlink;
  int needmsg;
  int msglen;
  
  /* set up rpc arguments */
  /* { PidFrom, { call, Mod, Fun, Args, user }}  */
  ei_encode_version(buf,&index);
  ei_encode_tuple_header(buf,&index,2);
  ei_encode_pid(buf,&index,self);               /* PidFrom */
  ei_encode_tuple_header(buf,&index,5);
  ei_encode_atom(buf,&index,"call");            /* call */
  ei_encode_atom(buf,&index,EI_MNESIA_MODULE);  /* Mod */
  ei_encode_atom(buf,&index,EI_MNESIA_RESTORE); /* Fun */
  ei_encode_list_header(buf,&index,2);          /* Args: [ table, self() ] */
  ei_encode_atom(buf,&index,mntab);
  ei_encode_pid(buf,&index,self); 
  ei_encode_empty_list(buf,&index);
  ei_encode_atom(buf,&index,"user");            /* user */

  /* make the rpc call */
  if (ei_send_reg_encoded(fd,self,"rex",buf,index)) return -1;

  /* get the reply: expect link and message (not sure which will come first though) */
  needlink = needmsg = 1;
  while (needlink || needmsg) {
    /* get message */
    index = EISMALLBUF;
    while (!(i = ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) index = EISMALLBUF;

    switch (i) {
    case ERL_LINK:
      /* got link */
      if (!needlink) return -1;
      needlink = 0;
      break;
      
    case ERL_SEND:
      /* got message - is it the right one? */
      if (!needmsg) return -1;
      else {
	/* expecting { rex, { size, Pid, Count, MaxKey, MaxObj }} */
	index = 0;
	if (ei_decode_version(buf,&index,&version) 
	    || ei_decode_tuple_header(buf,&index,&arity)
	    || (arity != 2) 
	    || ei_decode_atom(buf,&index,tmpbuf)
	    || strcmp(tmpbuf,"rex")
	    || ei_decode_tuple_header(buf,&index,&arity)
	    || (arity != 5) 
	    || ei_decode_atom(buf,&index,tmpbuf)
	    || strcmp(tmpbuf,EI_MNESIA_SIZE)
	    || ei_decode_pid(buf,&index,mnesia)
	    || ei_decode_long(buf,&index,count)
	    || ei_decode_long(buf,&index,maxkey)
	    || ei_decode_long(buf,&index,maxobj))
	  return -1; /* bad response from other side */
      
	/* got msg */
	needmsg = 0;
      }
      break;
      
    default:
      return -1; /* wasn't link or pid */
    }
  }
  return 0;
}
Beispiel #18
0
int ei_reg_restore(int fd, ei_reg *reg, const char *mntab)
{
  int i,j;
  char tag[32];
  char sbuf[EISMALLBUF];
  char *dbuf = NULL;
  char *msgbuf = NULL;
  char *keybuf = NULL;
  erlang_pid self;
  erlang_pid mnesia = {"",0,0,0};
  erlang_msg msg;
  int index = 0;
  int len = 0;
  int msglen;
  int version = 0;
  int arity = 0;
  long count = 0;
  long maxkey = 0;
  long maxobj = 0;
  ei_cnode *ec;

  if (!reg || !mntab) return -1; /* return EI_BADARG; */

  /* make a self pid */

  if ((ec = ei_fd_to_cnode(fd)) == NULL) {
      return -1;
  }
  strcpy(self.node,ei_thisnodename(ec));
  self.num = fd;
  self.serial = 0;
  self.creation = ei_thiscreation(ec);

  
  if (mn_start_restore(fd,&self,&mnesia,mntab,&count,&maxkey,&maxobj)) {
    /* send exit *only* if we have pid */
    if (mnesia.node[0]) ei_send_exit(fd,&self,&mnesia,"bad response from rpc start");
    return -1;
  }

  if (count <= 0) {
    ei_send_exit(fd,&self,&mnesia,"nothing to do");
    return 0;
  }
  
  /* make sure receive buffer can handle largest expected message */
  len = maxkey + maxobj + 512; 
  if (len > EISMALLBUF)
    if (!(dbuf = malloc(len))) {
      ei_send_exit(fd,&self,&mnesia,"cannot allocate space for incoming data");
      return -1;
    }
  msgbuf = (dbuf ? dbuf : sbuf);

  /* allocate space for largest key */
  if (!(keybuf = malloc(maxkey+1))) goto restore_failure;
  
  /* get this ball rolling */
  index = 0;
  ei_encode_version(msgbuf,&index);
  ei_encode_tuple_header(msgbuf,&index,2);
  ei_encode_atom(msgbuf,&index,"send_records");
  ei_encode_pid(msgbuf,&index,&self);
  if (ei_send_encoded(fd,&mnesia,msgbuf,index)) goto restore_failure;

  /* read as much as possible, until count or EXIT */
  for (i=0; i<count; i++) {
    index = len;
    while ((j = ei_recv_internal(fd,&msgbuf,&index,&msg,&msglen,1,0)) == 0) index = len;
    if (j<0) goto restore_failure;
    
    /* decode the first part of the message */
    index = 0;
    if ((msg.msgtype != ERL_SEND) 
	|| ei_decode_version(msgbuf,&index,&version) 
	|| ei_decode_tuple_header(msgbuf,&index,&arity) 
	|| (arity != 6) 
	|| ei_decode_atom(msgbuf,&index,tag) 
	|| strcmp(tag,EI_MNESIA_RECV)) 
      goto restore_failure;

    /* decode the rest of the message and insert data into table */
    if (mn_decode_insert(reg,msgbuf,&index,keybuf)) goto restore_failure;
  }
  
  if (keybuf) free(keybuf);
  if (dbuf) free(dbuf);

  /* wait for unlink */
  if (mn_unlink(fd)) return -1;

  /* clear all the dirty bits */
  ei_hash_foreach(reg->tab,clean_obj);

  /* success */
  return 0;

restore_failure:
  ei_send_exit(fd,&self,&mnesia,"restore failure");
  if (keybuf) free(keybuf);
  if (dbuf) free(dbuf);
  return -1;
}
Beispiel #19
0
static int mn_start_dump(int fd, const erlang_pid *self, 
			 erlang_pid *mnesia, const char *mntab)
{
  char buf[EISMALLBUF];
  char *bufp = buf;
  char tmpbuf[64];
  int index = 0;
  erlang_msg msg;
  int type;
  int arity;
  int version;
  int msglen;
  int i;
  int needlink;
  int needpid;

  /* set up rpc arguments */
  /* { PidFrom, { call, Mod, Fun, Args, user }}  */
  ei_encode_version(buf,&index);
  ei_encode_tuple_header(buf,&index,2);
  ei_encode_pid(buf,&index,self);               /* PidFrom */
  ei_encode_tuple_header(buf,&index,5);
  ei_encode_atom(buf,&index,"call");            /* call */
  ei_encode_atom(buf,&index,EI_MNESIA_MODULE);  /* Mod */
  ei_encode_atom(buf,&index,EI_MNESIA_DUMP);    /* Fun */
  ei_encode_list_header(buf,&index,2);          /* Args: [ table, self() ] */
  ei_encode_atom(buf,&index,mntab);
  ei_encode_pid(buf,&index,self); 
  ei_encode_empty_list(buf,&index);
  ei_encode_atom(buf,&index,"user");            /* user */

  /* make the rpc call */
  if (ei_send_reg_encoded(fd,self,"rex",buf,index)) return -1;

  /* get the reply: expect link and pid (not sure which will come first though) */
  needlink = needpid = 1;
  while (needlink || needpid) {
    /* get message */
    while (1) {
      index = EISMALLBUF;
      if (!(i = ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) continue;
      else break;
    }

    switch (i) {
    case ERL_LINK:
      /* got link */
      if (!needlink) return -1;
	needlink = 0;
      break;
      
    case ERL_SEND:
      /* got message - does it contain a pid? */
      if (!needpid) return -1;
      else {
	/* expecting { rex, <pid> } */
	index = 0;
	if (ei_decode_version(buf,&index,&version) 
	    || ei_decode_tuple_header(buf,&index,&arity) 
	    || (arity != 2) 
	    || ei_decode_atom(buf,&index,tmpbuf) 
	    || strcmp(tmpbuf,"rex")
	    || ei_get_type_internal(buf,&index,&type,&arity) 
	    || (type != ERL_PID_EXT))
	  return -1; /* bad response from other side */
      
	if (ei_decode_pid(buf,&index,mnesia)) return -1;

	/* got pid */
	needpid = 0;
      }
      break;
      
    default:
      return -1; /* wasn't link or pid */
    }
  }
  return 0;
}
Beispiel #20
0
/* global:unregister_name(name) -> ok */
int erl_global_unregister(int fd, const char *name)
{
  char buf[EISMALLBUF];
  char *bufp=buf;
  char tmpbuf[64];
  int index = 0;
  erlang_pid *self = erl_self();
  erlang_msg msg;
  int i;
  int version,arity,msglen;
  int needunlink, needatom, needdemonitor;

  /* make a self pid */
  self->num = fd;
  ei_encode_version(buf,&index);
  ei_encode_tuple_header(buf,&index,2);
  ei_encode_pid(buf,&index,self);               /* PidFrom */
  ei_encode_tuple_header(buf,&index,5);
  ei_encode_atom(buf,&index,"call");            /* call */
  ei_encode_atom(buf,&index,"global");          /* Mod */
  ei_encode_atom(buf,&index,"unregister_name_external");    /* Fun */
  ei_encode_list_header(buf,&index,1);          /* Args: [ name ] */
  ei_encode_atom(buf,&index,name);
  ei_encode_empty_list(buf,&index);
  ei_encode_atom(buf,&index,"user");            /* user */

  /* make the rpc call */
  if (ei_send_reg_encoded(fd,self,"rex",buf,index)) return -1;

  /* get the reply: expect unlink and an atom, or just an atom */
  needunlink = needatom = needdemonitor = 1;
  while (1) {
    /* get message */
    while (1) {
      index = EISMALLBUF;
      if (!(i = ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) continue;
      else break;
    }

    switch (i) {
    case ERL_UNLINK:
      /* got unlink */
      if (!needunlink) return -1;
      needunlink = 0;
      break;

    case ERL_DEMONITOR_P-10:
      /* got demonitor */
      if (!needdemonitor) return -1;
      needdemonitor = 0;
      break;

    case ERL_SEND:
      /* got message - does it contain our atom? */
      if (!needatom) return -1;
      else {
	/* expecting { rex, ok } */
	index = 0;
	if (ei_decode_version(buf,&index,&version) 
	    || ei_decode_tuple_header(buf,&index,&arity) 
	    || (arity != 2) 
	    || ei_decode_atom(buf,&index,tmpbuf) 
	    || strcmp(tmpbuf,"rex")
	    || ei_decode_atom(buf,&index,tmpbuf) 
	    || strcmp(tmpbuf,"ok"))
	  return -1; /* bad response from other side */

	/* we're done here */
	return 0;
      }
      break;

    default:
      return -1;
    }
  }

  return 0;
}
Beispiel #21
0
int ei_send_reg_encoded_tmo(int fd, const erlang_pid *from,
			    const char *to, char *msg, int msglen,
			    unsigned ms)
{
    char *s, header[1400]; /* see size calculation below */
    erlang_trace *token = NULL;
    int index = 5; /* reserve 5 bytes for control message */
    int err;
    ei_socket_callbacks *cbs;
    void *ctx;
    ssize_t len, tot_len;
    unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;

    err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
    if (err) {
        EI_CONN_SAVE_ERRNO__(err);
        return ERL_ERROR;
    }
    
    /* are we tracing? */
    /* check that he can receive trace tokens first */
    if (ei_distversion(fd) > 0)
	token = ei_trace(0,NULL);
    
    /* header = REG_SEND, from, cookie, toname         max sizes: */
    ei_encode_version(header,&index);                     /*   1 */
    if (token) { 
	ei_encode_tuple_header(header,&index,5);            /*   2 */
	ei_encode_long(header,&index,ERL_REG_SEND_TT);      /*   2 */
    } else {
	ei_encode_tuple_header(header,&index,4);    
	ei_encode_long(header,&index,ERL_REG_SEND); 
    }
    ei_encode_pid(header, &index, from);                    /* 268 */
    ei_encode_atom(header, &index, ei_getfdcookie(fd));       /* 258 */
    ei_encode_atom(header, &index, to);                     /* 268 */

    if (token) ei_encode_trace(header,&index,token);      /* 534 */

    /* control message (precedes header actually) */
    /* length = 1 ('p') + header len + message len */
    s = header;
    put32be(s, index + msglen - 4);                       /*   4 */
    put8(s, ERL_PASS_THROUGH);                                /*   1 */
                                                /*** sum: 1336 */
    if (ei_tracelevel >= 4) 
	ei_show_sendmsg(stderr,header,msg);

#ifdef EI_HAVE_STRUCT_IOVEC__
    if (ei_socket_callbacks_have_writev__(cbs)) {
        struct iovec v[2];

        v[0].iov_base = (char *)header;
        v[0].iov_len = index;
        v[1].iov_base = (char *)msg;
        v[1].iov_len = msglen;
    
        len = tot_len = (ssize_t) index+msglen;
        err = ei_writev_fill_ctx_t__(cbs, ctx, v, 2, &len, tmo);
        if (!err && len != tot_len)
            err = EIO;
        if (err) {
            EI_CONN_SAVE_ERRNO__(err);
            return -1;
        }
        return 0;
    }
#endif /* EI_HAVE_STRUCT_IOVEC__ */

    /* no writev() */
    len = tot_len = (ssize_t) index;
    err = ei_write_fill_ctx_t__(cbs, ctx, header, &len, tmo);
    if (!err && len != tot_len)
        err = EIO;
    if (err) {
        EI_CONN_SAVE_ERRNO__(err);
        return -1;
    }

    len = tot_len = (ssize_t) msglen;
    err = ei_write_fill_ctx_t__(cbs, ctx, msg, &len, tmo);
    if (!err && len != tot_len)
        err = EIO;
    if (err) {
        EI_CONN_SAVE_ERRNO__(err);
        return -1;
    }
    
    return 0;
}
Beispiel #22
0
int ei_encode_fun(char *buf, int *index, const erlang_fun *p)
{
    int ix = *index;

    switch (p->type) {
    case EI_FUN_CLOSURE:
	if (p->arity == -1) {
	    /* ERL_FUN_EXT */
	    if (buf != NULL) {
		char* s = buf + ix;
		put8(s, ERL_FUN_EXT);
		put32be(s, p->u.closure.n_free_vars);
	    }
	    ix += sizeof(char) + 4;
	    if (ei_encode_pid(buf, &ix, &p->u.closure.pid) < 0)
		return -1;
	    if (ei_encode_atom_as(buf, &ix, p->module, ERLANG_UTF8, ERLANG_UTF8) < 0)
		return -1;
	    if (ei_encode_long(buf, &ix, p->u.closure.index) < 0)
		return -1;
	    if (ei_encode_long(buf, &ix, p->u.closure.uniq) < 0)
		return -1;
	    if (buf != NULL)
		memcpy(buf + ix, p->u.closure.free_vars, p->u.closure.free_var_len);
	    ix += p->u.closure.free_var_len;
	} else {
	    char *size_p;
	    if (buf != NULL) {
		char* s = buf + ix;
		put8(s, ERL_NEW_FUN_EXT);
		size_p = s;
		s += 4;
		put8(s, p->arity);
		memcpy(s, p->u.closure.md5, sizeof(p->u.closure.md5));
		s += sizeof(p->u.closure.md5);
		put32be(s, p->u.closure.index);
		put32be(s, p->u.closure.n_free_vars);
	    } else
		size_p = NULL;
	    ix += 1 + 4 + 1 + sizeof(p->u.closure.md5) + 4 + 4;
	    if (ei_encode_atom_as(buf, &ix, p->module, ERLANG_UTF8, ERLANG_UTF8) < 0)
		return -1;
	    if (ei_encode_long(buf, &ix, p->u.closure.old_index) < 0)
		return -1;
	    if (ei_encode_long(buf, &ix, p->u.closure.uniq) < 0)
		return -1;
	    if (ei_encode_pid(buf, &ix, &p->u.closure.pid) < 0)
		return -1;
	    if (buf != NULL)
		memcpy(buf + ix, p->u.closure.free_vars, p->u.closure.free_var_len);
	    ix += p->u.closure.free_var_len;
	    if (size_p != NULL) {
		int sz = buf + ix - size_p;
		put32be(size_p, sz);
	    }
	}
	break;
    case EI_FUN_EXPORT:
        if (buf != NULL) {
            char* s = buf + ix;
            put8(s, ERL_EXPORT_EXT);
        }
        ix++;
        if (ei_encode_atom_as(buf, &ix, p->module, ERLANG_UTF8, ERLANG_UTF8) < 0)
            return -1;
        if (ei_encode_atom_as(buf, &ix, p->u.exprt.func, ERLANG_UTF8, ERLANG_UTF8) < 0)
            return -1;
        if (ei_encode_long(buf, &ix, p->arity) < 0)
            return -1;
        break;
    }
    *index = ix;
    return 0;
}