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4808a67805
This is used by libdtrace to determine the data model of target processes. This allows for the creation of pid provider probes in 32-bit processes on amd64. MFC after: 1 month
85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/*
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* Copyright (c) 2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Rui Paulo under sponsorship from the
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* FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <rtld_db.h>
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#include "libproc.h"
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#include "_libproc.h"
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static int
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map_iter(const rd_loadobj_t *lop, void *arg)
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{
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struct proc_handle *phdl = arg;
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if (phdl->nobjs >= phdl->rdobjsz) {
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phdl->rdobjsz *= 2;
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phdl->rdobjs = reallocf(phdl->rdobjs, sizeof(*phdl->rdobjs) *
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phdl->rdobjsz);
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if (phdl->rdobjs == NULL)
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return (-1);
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}
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if (strcmp(lop->rdl_path, phdl->execpath) == 0 &&
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(lop->rdl_prot & RD_RDL_X) != 0)
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phdl->rdexec = &phdl->rdobjs[phdl->nobjs];
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memcpy(&phdl->rdobjs[phdl->nobjs++], lop, sizeof(*lop));
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return (0);
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}
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rd_agent_t *
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proc_rdagent(struct proc_handle *phdl)
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{
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if (phdl->rdap == NULL && phdl->status != PS_UNDEAD &&
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phdl->status != PS_IDLE) {
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if ((phdl->rdap = rd_new(phdl)) != NULL) {
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phdl->rdobjs = malloc(sizeof(*phdl->rdobjs) * 64);
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phdl->rdobjsz = 64;
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if (phdl->rdobjs == NULL)
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return (phdl->rdap);
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rd_loadobj_iter(phdl->rdap, map_iter, phdl);
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}
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}
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return (phdl->rdap);
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}
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void
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proc_updatesyms(struct proc_handle *phdl)
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{
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memset(phdl->rdobjs, 0, sizeof(*phdl->rdobjs) * phdl->rdobjsz);
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phdl->nobjs = 0;
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rd_loadobj_iter(phdl->rdap, map_iter, phdl);
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}
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