mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-19 10:53:58 +00:00
4e67575ec9
array of loaded objects to avoid a buffer overrun. - Use reallocf() to avoid leaking memory if the realloc() fails. PR: kern/175648 Submitted by: yuri@rawbw.com (1) MFC after: 1 week
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2010 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Rui Paulo under sponsorship from the
|
|
* FreeBSD Foundation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <rtld_db.h>
|
|
#include "libproc.h"
|
|
#include "_libproc.h"
|
|
|
|
static int
|
|
map_iter(const rd_loadobj_t *lop, void *arg)
|
|
{
|
|
struct proc_handle *phdl = arg;
|
|
|
|
if (phdl->nobjs >= phdl->rdobjsz) {
|
|
phdl->rdobjsz *= 2;
|
|
phdl->rdobjs = reallocf(phdl->rdobjs, sizeof(*phdl->rdobjs) *
|
|
phdl->rdobjsz);
|
|
if (phdl->rdobjs == NULL)
|
|
return (-1);
|
|
}
|
|
memcpy(&phdl->rdobjs[phdl->nobjs++], lop, sizeof(*lop));
|
|
|
|
return (0);
|
|
}
|
|
|
|
rd_agent_t *
|
|
proc_rdagent(struct proc_handle *phdl)
|
|
{
|
|
if (phdl->rdap == NULL && phdl->status != PS_UNDEAD &&
|
|
phdl->status != PS_IDLE) {
|
|
if ((phdl->rdap = rd_new(phdl)) != NULL) {
|
|
phdl->rdobjs = malloc(sizeof(*phdl->rdobjs) * 64);
|
|
phdl->rdobjsz = 64;
|
|
if (phdl->rdobjs == NULL)
|
|
return (phdl->rdap);
|
|
rd_loadobj_iter(phdl->rdap, map_iter, phdl);
|
|
}
|
|
}
|
|
|
|
return (phdl->rdap);
|
|
}
|
|
|
|
void
|
|
proc_updatesyms(struct proc_handle *phdl)
|
|
{
|
|
|
|
memset(phdl->rdobjs, 0, sizeof(*phdl->rdobjs) * phdl->rdobjsz);
|
|
phdl->nobjs = 0;
|
|
rd_loadobj_iter(phdl->rdap, map_iter, phdl);
|
|
}
|