1/*
2 * Copyright (c) 2010 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Rui Paulo under sponsorship from the
6 * FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD$");
32
33#include <stdio.h>
34#include <string.h>
35#include <stdlib.h>
36#include <rtld_db.h>
37#include "libproc.h"
38#include "_libproc.h"
39
40static int
41map_iter(const rd_loadobj_t *lop, void *arg)
42{
43	struct proc_handle *phdl = arg;
44
45	if (phdl->nobjs >= phdl->rdobjsz) {
46		phdl->rdobjsz *= 2;
47		phdl->rdobjs = reallocf(phdl->rdobjs, sizeof(*phdl->rdobjs) *
48		    phdl->rdobjsz);
49		if (phdl->rdobjs == NULL)
50			return (-1);
51	}
52	memcpy(&phdl->rdobjs[phdl->nobjs++], lop, sizeof(*lop));
53
54	return (0);
55}
56
57rd_agent_t *
58proc_rdagent(struct proc_handle *phdl)
59{
60	if (phdl->rdap == NULL && phdl->status != PS_UNDEAD &&
61	    phdl->status != PS_IDLE) {
62		if ((phdl->rdap = rd_new(phdl)) != NULL) {
63			phdl->rdobjs = malloc(sizeof(*phdl->rdobjs) * 64);
64			phdl->rdobjsz = 64;
65			if (phdl->rdobjs == NULL)
66				return (phdl->rdap);
67			rd_loadobj_iter(phdl->rdap, map_iter, phdl);
68		}
69	}
70
71	return (phdl->rdap);
72}
73
74void
75proc_updatesyms(struct proc_handle *phdl)
76{
77
78	memset(phdl->rdobjs, 0, sizeof(*phdl->rdobjs) * phdl->rdobjsz);
79	phdl->nobjs = 0;
80	rd_loadobj_iter(phdl->rdap, map_iter, phdl);
81}
82