| 1 | /* Attach to target process. |
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| 2 | Copyright (C) 1999-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <stddef.h> |
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| 20 | #include <stdlib.h> |
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| 21 | #include <string.h> |
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| 22 | #include <version.h> |
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| 23 | |
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| 24 | #include "thread_dbP.h" |
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| 25 | |
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| 26 | |
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| 27 | /* Datatype for the list of known thread agents. Normally there will |
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| 28 | be exactly one so we don't spend much though on making it fast. */ |
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| 29 | LIST_HEAD (__td_agent_list); |
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| 30 | |
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| 31 | |
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| 32 | td_err_e |
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| 33 | td_ta_new (struct ps_prochandle *ps, td_thragent_t **ta) |
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| 34 | { |
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| 35 | psaddr_t versaddr; |
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| 36 | char versbuf[sizeof (VERSION)]; |
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| 37 | |
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| 38 | LOG ("td_ta_new" ); |
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| 39 | |
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| 40 | /* Check whether the versions match. */ |
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| 41 | if (td_lookup (ps, SYM___nptl_version, &versaddr) != PS_OK) |
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| 42 | return TD_NOLIBTHREAD; |
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| 43 | if (ps_pdread (ps, versaddr, versbuf, sizeof (versbuf)) != PS_OK) |
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| 44 | return TD_ERR; |
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| 45 | |
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| 46 | if (memcmp (s1: versbuf, VERSION, n: sizeof VERSION) != 0) |
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| 47 | /* Not the right version. */ |
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| 48 | return TD_VERSION; |
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| 49 | |
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| 50 | /* Fill in the appropriate information. */ |
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| 51 | *ta = (td_thragent_t *) calloc (nmemb: 1, size: sizeof (td_thragent_t)); |
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| 52 | if (*ta == NULL) |
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| 53 | return TD_MALLOC; |
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| 54 | |
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| 55 | /* Store the proc handle which we will pass to the callback functions |
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| 56 | back into the debugger. */ |
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| 57 | (*ta)->ph = ps; |
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| 58 | |
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| 59 | /* Now add the new agent descriptor to the list. */ |
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| 60 | list_add (newp: &(*ta)->list, head: &__td_agent_list); |
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| 61 | |
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| 62 | return TD_OK; |
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| 63 | } |
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| 64 | |
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