1: /* Attach to target process.
    2:    Copyright (C) 1999,2001,2002,2003 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4:    Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
    5: 
    6:    The GNU C Library is free software; you can redistribute it and/or
    7:    modify it under the terms of the GNU Lesser General Public
    8:    License as published by the Free Software Foundation; either
    9:    version 2.1 of the License, or (at your option) any later version.
   10: 
   11:    The GNU C Library is distributed in the hope that it will be useful,
   12:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   13:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   14:    Lesser General Public License for more details.
   15: 
   16:    You should have received a copy of the GNU Lesser General Public
   17:    License along with the GNU C Library; if not, write to the Free
   18:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   19:    02111-1307 USA.  */
   20: 
   21: #include <stddef.h>
   22: #include <stdlib.h>
   23: #include <string.h>
   24: #include <version.h>
   25: 
   26: #include "thread_dbP.h"
   27: 
   28: 
   29: /* Datatype for the list of known thread agents.  Normally there will
   30:    be exactly one so we don't spend much though on making it fast.  */
   31: LIST_HEAD (__td_agent_list);
   32: 
   33: 
   34: td_err_e
   35: td_ta_new (struct ps_prochandle *ps, td_thragent_t **ta)
   36: {
   37:   psaddr_t versaddr;
   38:   char versbuf[sizeof (VERSION)];
   39: 
   40:   LOG ("td_ta_new");
   41: 
   42:   /* Check whether the versions match.  */
   43:   if (td_lookup (ps, SYM_nptl_version, &versaddr) != PS_OK)
   44:     return TD_NOLIBTHREAD;
   45:   if (ps_pdread (ps, versaddr, versbuf, sizeof (versbuf)) != PS_OK)
   46:     return TD_ERR;
   47: 
   48:   if (memcmp (versbuf, VERSION, sizeof VERSION) != 0)
   49:     /* Not the right version.  */
   50:     return TD_VERSION;
   51: 
   52:   /* Fill in the appropriate information.  */
   53:   *ta = (td_thragent_t *) calloc (1, sizeof (td_thragent_t));
   54:   if (*ta == NULL)
   55:     return TD_MALLOC;
   56: 
   57:   /* Store the proc handle which we will pass to the callback functions
   58:      back into the debugger.  */
   59:   (*ta)->ph = ps;
   60: 
   61:   /* Now add the new agent descriptor to the list.  */
   62:   list_add (&(*ta)->list, &__td_agent_list);
   63: 
   64:   return TD_OK;
   65: }