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 40 static int 41 map_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 if (strcmp(lop->rdl_path, phdl->execname) == 0 && 53 (lop->rdl_prot & RD_RDL_X) != 0) 54 phdl->rdexec = &phdl->rdobjs[phdl->nobjs]; 55 memcpy(&phdl->rdobjs[phdl->nobjs++], lop, sizeof(*lop)); 56 57 return (0); 58 } 59 60 rd_agent_t * 61 proc_rdagent(struct proc_handle *phdl) 62 { 63 if (phdl->rdap == NULL && phdl->status != PS_UNDEAD && 64 phdl->status != PS_IDLE) { 65 if ((phdl->rdap = rd_new(phdl)) != NULL) { 66 phdl->rdobjs = malloc(sizeof(*phdl->rdobjs) * 64); 67 phdl->rdobjsz = 64; 68 if (phdl->rdobjs == NULL) 69 return (phdl->rdap); 70 rd_loadobj_iter(phdl->rdap, map_iter, phdl); 71 } 72 } 73 74 return (phdl->rdap); 75 } 76 77 void 78 proc_updatesyms(struct proc_handle *phdl) 79 { 80 81 memset(phdl->rdobjs, 0, sizeof(*phdl->rdobjs) * phdl->rdobjsz); 82 phdl->nobjs = 0; 83 rd_loadobj_iter(phdl->rdap, map_iter, phdl); 84 } 85