1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include "misc.h" 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #define UMEM_OBJNAME "libumem.so" 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate int umem_debug_level = 0; 34*0Sstevel@tonic-gate int umem_is_standalone = 0; 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate /*ARGSUSED*/ 37*0Sstevel@tonic-gate int 38*0Sstevel@tonic-gate umem_debug(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 39*0Sstevel@tonic-gate { 40*0Sstevel@tonic-gate umem_debug_level ^= 1; 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate mdb_printf("umem: debugging is now %s\n", 43*0Sstevel@tonic-gate umem_debug_level ? "on" : "off"); 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate return (DCMD_OK); 46*0Sstevel@tonic-gate } 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate void 49*0Sstevel@tonic-gate umem_set_standalone(void) 50*0Sstevel@tonic-gate { 51*0Sstevel@tonic-gate umem_is_standalone = 1; 52*0Sstevel@tonic-gate } 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate ssize_t 55*0Sstevel@tonic-gate umem_lookup_by_name(const char *name, GElf_Sym *sym) 56*0Sstevel@tonic-gate { 57*0Sstevel@tonic-gate return (mdb_lookup_by_obj((umem_is_standalone ? MDB_OBJ_EXEC : 58*0Sstevel@tonic-gate UMEM_OBJNAME), name, sym)); 59*0Sstevel@tonic-gate } 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate /* This is like mdb_readvar, only for libumem.so's symbols */ 62*0Sstevel@tonic-gate ssize_t 63*0Sstevel@tonic-gate umem_readvar(void *buf, const char *name) 64*0Sstevel@tonic-gate { 65*0Sstevel@tonic-gate GElf_Sym sym; 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate if (umem_lookup_by_name(name, &sym)) 68*0Sstevel@tonic-gate return (-1); 69*0Sstevel@tonic-gate 70*0Sstevel@tonic-gate if (mdb_vread(buf, sym.st_size, (uintptr_t)sym.st_value) 71*0Sstevel@tonic-gate == sym.st_size) 72*0Sstevel@tonic-gate return ((ssize_t)sym.st_size); 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate return (-1); 75*0Sstevel@tonic-gate } 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate int 78*0Sstevel@tonic-gate is_umem_sym(const char *sym, const char *prefix) 79*0Sstevel@tonic-gate { 80*0Sstevel@tonic-gate char *tick_p = strrchr(sym, '`'); 81*0Sstevel@tonic-gate 82*0Sstevel@tonic-gate return (strncmp(sym, "libumem", 7) == 0 && tick_p != NULL && 83*0Sstevel@tonic-gate strncmp(tick_p + 1, prefix, strlen(prefix)) == 0); 84*0Sstevel@tonic-gate } 85