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76a50749 | 1 | /* Attach to target process. |
2b778ceb | 2 | Copyright (C) 1999-2021 Free Software Foundation, Inc. |
76a50749 UD |
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 | |
59ba27a6 | 17 | License along with the GNU C Library; if not, see |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
76a50749 UD |
19 | |
20 | #include <stddef.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <version.h> | |
24 | ||
25 | #include "thread_dbP.h" | |
26 | ||
27 | ||
28 | /* Datatype for the list of known thread agents. Normally there will | |
29 | be exactly one so we don't spend much though on making it fast. */ | |
30 | LIST_HEAD (__td_agent_list); | |
31 | ||
32 | ||
33 | td_err_e | |
34 | td_ta_new (struct ps_prochandle *ps, td_thragent_t **ta) | |
35 | { | |
76a50749 UD |
36 | psaddr_t versaddr; |
37 | char versbuf[sizeof (VERSION)]; | |
38 | ||
39 | LOG ("td_ta_new"); | |
40 | ||
76a50749 | 41 | /* Check whether the versions match. */ |
b369cc4e | 42 | if (td_lookup (ps, SYM___nptl_version, &versaddr) != PS_OK) |
7f08f55a | 43 | return TD_NOLIBTHREAD; |
76a50749 UD |
44 | if (ps_pdread (ps, versaddr, versbuf, sizeof (versbuf)) != PS_OK) |
45 | return TD_ERR; | |
46 | ||
7f08f55a | 47 | if (memcmp (versbuf, VERSION, sizeof VERSION) != 0) |
76a50749 UD |
48 | /* Not the right version. */ |
49 | return TD_VERSION; | |
50 | ||
51 | /* Fill in the appropriate information. */ | |
7f08f55a | 52 | *ta = (td_thragent_t *) calloc (1, sizeof (td_thragent_t)); |
76a50749 UD |
53 | if (*ta == NULL) |
54 | return TD_MALLOC; | |
55 | ||
56 | /* Store the proc handle which we will pass to the callback functions | |
57 | back into the debugger. */ | |
58 | (*ta)->ph = ps; | |
59 | ||
76a50749 UD |
60 | /* Now add the new agent descriptor to the list. */ |
61 | list_add (&(*ta)->list, &__td_agent_list); | |
62 | ||
63 | return TD_OK; | |
64 | } |