1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1988 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright (c) 1998 by Sun Microsystems, Inc. 28 * All rights reserved. 29 */ 30 31 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.4 */ 32 33 #pragma weak elf_newscn = _elf_newscn 34 35 36 #include "syn.h" 37 #include "libelf.h" 38 #include "decl.h" 39 #include "msg.h" 40 41 42 Elf_Scn * 43 elf_newscn(Elf * elf) 44 { 45 Elf_Scn * tl; 46 47 if (elf == 0) 48 return (0); 49 50 ELFWLOCK(elf) 51 /* 52 * if no sections yet, the file either isn't cooked 53 * or it truly is empty. Then allocate shdr[0] 54 */ 55 if ((elf->ed_hdscn == 0) && (_elf_cook(elf) != OK_YES)) { 56 ELFUNLOCK(elf) 57 return (0); 58 } 59 if (elf->ed_ehdr == 0) { 60 _elf_seterr(ESEQ_EHDR, 0); 61 ELFUNLOCK(elf) 62 return (0); 63 } 64 65 if (elf->ed_class == ELFCLASS32) { 66 Snode32 *s; 67 68 if (elf->ed_hdscn == 0) { 69 if ((s = _elf32_snode()) == 0) { 70 ELFUNLOCK(elf) 71 return (0); 72 } 73 NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*s)) 74 s->sb_scn.s_elf = elf; 75 elf->ed_hdscn = elf->ed_tlscn = &s->sb_scn; 76 s->sb_scn.s_uflags |= ELF_F_DIRTY; 77 } 78 if ((s = _elf32_snode()) == 0) { 79 ELFUNLOCK(elf) 80 return (0); 81 } 82 NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*s)) 83 tl = elf->ed_tlscn; 84 s->sb_scn.s_elf = elf; 85 s->sb_scn.s_index = tl->s_index + 1; 86 elf->ed_tlscn = tl->s_next = &s->sb_scn; 87 ((Elf32_Ehdr *)elf->ed_ehdr)->e_shnum 88 /* LINTED */ 89 = (Elf32_Half)(tl->s_index + 2); 90 s->sb_scn.s_uflags |= ELF_F_DIRTY; 91 tl = &s->sb_scn; 92 NOTE(NOW_VISIBLE_TO_OTHER_THREADS(*s)) 93 ELFUNLOCK(elf) 94 return (tl); 95 } else if (elf->ed_class == ELFCLASS64) { 96 Snode64 *s; 97 98 if (elf->ed_hdscn == 0) { 99 if ((s = _elf64_snode()) == 0) { 100 ELFUNLOCK(elf) 101 return (0); 102 } 103 NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*s)) 104 s->sb_scn.s_elf = elf; 105 elf->ed_hdscn = elf->ed_tlscn = &s->sb_scn; 106 s->sb_scn.s_uflags |= ELF_F_DIRTY; 107 } 108 if ((s = _elf64_snode()) == 0) { 109 ELFUNLOCK(elf) 110 return (0); 111 } 112 NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*s)) 113 tl = elf->ed_tlscn; 114 s->sb_scn.s_elf = elf; 115 s->sb_scn.s_index = tl->s_index + 1; 116 elf->ed_tlscn = tl->s_next = &s->sb_scn; 117 ((Elf64_Ehdr *)elf->ed_ehdr)->e_shnum 118 /* LINTED */ 119 = (Elf64_Half)(tl->s_index + 2); 120 s->sb_scn.s_uflags |= ELF_F_DIRTY; 121 tl = &s->sb_scn; 122 NOTE(NOW_VISIBLE_TO_OTHER_THREADS(*s)) 123 ELFUNLOCK(elf) 124 return (tl); 125 } else { 126 _elf_seterr(EREQ_CLASS, 0); 127 ELFUNLOCK(elf) 128 return (0); 129 } 130 } 131