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[glibc/history.git] / nptl_db / td_ta_new.c
blobf84049af347a2e0f904bd0803f5b63523be766ea
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.
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.
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.
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. */
21 #include <stddef.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <version.h>
26 #include "thread_dbP.h"
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);
34 td_err_e
35 td_ta_new (struct ps_prochandle *ps, td_thragent_t **ta)
37 psaddr_t versaddr;
38 char versbuf[sizeof (VERSION)];
40 LOG ("td_ta_new");
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;
48 if (memcmp (versbuf, VERSION, sizeof VERSION) != 0)
49 /* Not the right version. */
50 return TD_VERSION;
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;
57 /* Store the proc handle which we will pass to the callback functions
58 back into the debugger. */
59 (*ta)->ph = ps;
61 /* Now add the new agent descriptor to the list. */
62 list_add (&(*ta)->list, &__td_agent_list);
64 return TD_OK;