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 /* Copyright (c) 1988 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate /* 27*0Sstevel@tonic-gate * Copyright (c) 1998 by Sun Microsystems, Inc. 28*0Sstevel@tonic-gate * All rights reserved. 29*0Sstevel@tonic-gate */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.2 */ 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate #pragma weak elf_newdata = _elf_newdata 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate #include "syn.h" 38*0Sstevel@tonic-gate #include "libelf.h" 39*0Sstevel@tonic-gate #include "decl.h" 40*0Sstevel@tonic-gate #include "msg.h" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate Elf_Data * 44*0Sstevel@tonic-gate elf_newdata(Elf_Scn * s) 45*0Sstevel@tonic-gate { 46*0Sstevel@tonic-gate Dnode * d; 47*0Sstevel@tonic-gate Elf_Data * rc; 48*0Sstevel@tonic-gate Elf * elf; 49*0Sstevel@tonic-gate unsigned work; 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate if (s == 0) 52*0Sstevel@tonic-gate return (0); 53*0Sstevel@tonic-gate elf = s->s_elf; 54*0Sstevel@tonic-gate READLOCKS(elf, s) 55*0Sstevel@tonic-gate if (s->s_index == SHN_UNDEF) { 56*0Sstevel@tonic-gate _elf_seterr(EREQ_SCNNULL, 0); 57*0Sstevel@tonic-gate READUNLOCKS(elf, s) 58*0Sstevel@tonic-gate return (0); 59*0Sstevel@tonic-gate } 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate if ((s->s_myflags & SF_READY) == 0) { 62*0Sstevel@tonic-gate UPGRADELOCKS(elf, s) 63*0Sstevel@tonic-gate /* 64*0Sstevel@tonic-gate * re-confirm that another 'thread' hasn't come along 65*0Sstevel@tonic-gate * and cooked this section while the locks were 66*0Sstevel@tonic-gate * obtained. 67*0Sstevel@tonic-gate */ 68*0Sstevel@tonic-gate if ((s->s_myflags & SF_READY) == 0) 69*0Sstevel@tonic-gate (void) _elf_cookscn(s); 70*0Sstevel@tonic-gate DOWNGRADELOCKS(elf, s) 71*0Sstevel@tonic-gate } 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate /* 74*0Sstevel@tonic-gate * If this is the first new node, use the one allocated 75*0Sstevel@tonic-gate * in the scn itself. Update data buffer in both cases. 76*0Sstevel@tonic-gate */ 77*0Sstevel@tonic-gate ELFACCESSDATA(work, _elf_work) 78*0Sstevel@tonic-gate if (s->s_hdnode == 0) { 79*0Sstevel@tonic-gate s->s_dnode.db_uflags |= ELF_F_DIRTY; 80*0Sstevel@tonic-gate s->s_dnode.db_myflags |= DBF_READY; 81*0Sstevel@tonic-gate s->s_hdnode = &s->s_dnode; 82*0Sstevel@tonic-gate s->s_tlnode = &s->s_dnode; 83*0Sstevel@tonic-gate s->s_dnode.db_scn = s; 84*0Sstevel@tonic-gate s->s_dnode.db_data.d_version = work; 85*0Sstevel@tonic-gate rc = &s->s_dnode.db_data; 86*0Sstevel@tonic-gate READUNLOCKS(elf, s) 87*0Sstevel@tonic-gate return (rc); 88*0Sstevel@tonic-gate } 89*0Sstevel@tonic-gate if ((d = _elf_dnode()) == 0) { 90*0Sstevel@tonic-gate READUNLOCKS(elf, s) 91*0Sstevel@tonic-gate return (0); 92*0Sstevel@tonic-gate } 93*0Sstevel@tonic-gate NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*d)) 94*0Sstevel@tonic-gate d->db_data.d_version = work; 95*0Sstevel@tonic-gate d->db_scn = s; 96*0Sstevel@tonic-gate d->db_uflags |= ELF_F_DIRTY; 97*0Sstevel@tonic-gate d->db_myflags |= DBF_READY; 98*0Sstevel@tonic-gate s->s_tlnode->db_next = d; 99*0Sstevel@tonic-gate s->s_tlnode = d; 100*0Sstevel@tonic-gate rc = &d->db_data; 101*0Sstevel@tonic-gate NOTE(NOW_VISIBLE_TO_OTHER_THREADS(*d)) 102*0Sstevel@tonic-gate READUNLOCKS(elf, s) 103*0Sstevel@tonic-gate return (rc); 104*0Sstevel@tonic-gate } 105