c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * CDDL HEADER START
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny *
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * The contents of this file are subject to the terms of the
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * Common Development and Distribution License (the "License").
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * You may not use this file except in compliance with the License.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny *
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * or http://www.opensolaris.org/os/licensing.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * See the License for the specific language governing permissions
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * and limitations under the License.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny *
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * When distributing Covered Code, include this CDDL HEADER in each
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * If applicable, add the following below this CDDL HEADER, with the
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * fields enclosed by brackets "[]" replaced with your own identifying
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * information: Portions Copyright [yyyy] [name of copyright owner]
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny *
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * CDDL HEADER END
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/* All Rights Reserved */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/* Copyright (c) 1987, 1988 Microsoft Corporation */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/* All Rights Reserved */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * Use is subject to license terms.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab/*
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * ELF files can exceed 2GB in size. A standard 32-bit program
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * like 'file' cannot read past 2GB, and will be unable to see
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * the ELF section headers that typically are at the end of the
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * object. The simplest solution to this problem would be to make
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * the 'file' command a 64-bit application. However, as a matter of
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * policy, we do not want to require this. A simple command like
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * 'file' should not carry such a requirement, especially as we
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * support 32-bit only hardware.
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab *
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * An alternative solution is to build this code as 32-bit
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * large file aware. The usual way to do this is to define a pair
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * of preprocessor definitions:
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab *
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * _LARGEFILE64_SOURCE
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * Map standard I/O routines to their largefile aware versions.
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab *
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * _FILE_OFFSET_BITS=64
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * Map off_t to off64_t
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab *
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * The problem with this solution is that libelf is not large file capable,
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * and the libelf header file will prevent compilation if
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * _FILE_OFFSET_BITS is set to 64.
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab *
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * So, the solution used in this code is to define _LARGEFILE64_SOURCE
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * to get access to the 64-bit APIs, not to define _FILE_OFFSET_BITS, and to
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * use our own types in place of off_t, and size_t. We read all the file
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * data directly using pread64(), and avoid the use of libelf for anything
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab * other than the xlate functionality.
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#define _LARGEFILE64_SOURCE
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab#define FILE_ELF_OFF_T off64_t
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab#define FILE_ELF_SIZE_T uint64_t
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <ctype.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <unistd.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <fcntl.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <stdio.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <libelf.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <stdlib.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <limits.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <locale.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <string.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <errno.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <procfs.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <sys/param.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <sys/types.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <sys/stat.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <sys/elf.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include <elfcap.h>
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include "file.h"
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#include "elf_read.h"
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyextern const char *File;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int get_class(void);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int get_version(void);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int get_format(void);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int process_shdr(Elf_Info *);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int process_phdr(Elf_Info *);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int file_xlatetom(Elf_Type, char *);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int xlatetom_nhdr(Elf_Nhdr *);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int get_phdr(Elf_Info *, int);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int get_shdr(Elf_Info *, int);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
97cca09008b0f5f24287c17660e644b0294c9ba2abstatic Elf_Ehdr EI_Ehdr; /* Elf_Ehdr to be stored */
97cca09008b0f5f24287c17660e644b0294c9ba2abstatic Elf_Word EI_Ehdr_shnum; /* # section headers */
97cca09008b0f5f24287c17660e644b0294c9ba2abstatic Elf_Word EI_Ehdr_phnum; /* # program headers */
97cca09008b0f5f24287c17660e644b0294c9ba2abstatic Elf_Word EI_Ehdr_shstrndx; /* Index of section hdr string table */
97cca09008b0f5f24287c17660e644b0294c9ba2abstatic Elf_Shdr EI_Shdr; /* recent Elf_Shdr to be stored */
97cca09008b0f5f24287c17660e644b0294c9ba2abstatic Elf_Phdr EI_Phdr; /* recent Elf_Phdr to be stored */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyget_class(void)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (EI_Ehdr.e_ident[EI_CLASS]);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyget_version(void)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* do as what libelf:_elf_config() does */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (EI_Ehdr.e_ident[EI_VERSION] ?
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI_Ehdr.e_ident[EI_VERSION] : 1);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyget_format(void)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (EI_Ehdr.e_ident[EI_DATA]);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * file_xlatetom: translate different headers from file
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * representation to memory representaion.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny#define HDRSZ 512
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyfile_xlatetom(Elf_Type type, char *hdr)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny Elf_Data src, dst;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny char *hbuf[HDRSZ];
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny int version, format;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny version = get_version();
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny format = get_format();
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* will convert only these types */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (type != ELF_T_EHDR && type != ELF_T_PHDR &&
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny type != ELF_T_SHDR && type != ELF_T_WORD &&
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny type != ELF_T_CAP)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny src.d_buf = (Elf_Void *)hdr;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny src.d_type = type;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny src.d_version = version;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny dst.d_buf = (Elf_Void *)&hbuf;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny dst.d_version = EV_CURRENT;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny src.d_size = elf_fsize(type, 1, version);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny dst.d_size = elf_fsize(type, 1, EV_CURRENT);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (elf_xlatetom(&dst, &src, format) == NULL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny (void) memcpy(hdr, &hbuf, dst.d_size);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_OKAY);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * xlatetom_nhdr: There is no routine to convert Note header
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * so we convert each field of this header.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyxlatetom_nhdr(Elf_Nhdr *nhdr)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny int r = ELF_READ_FAIL;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny r |= file_xlatetom(ELF_T_WORD, (char *)&nhdr->n_namesz);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny r |= file_xlatetom(ELF_T_WORD, (char *)&nhdr->n_descsz);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny r |= file_xlatetom(ELF_T_WORD, (char *)&nhdr->n_type);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (r);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * elf_read: reads elf header, program, section headers to
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * collect all information needed for file(1)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * output and stores them in Elf_Info.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyint
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyelf_read(int fd, Elf_Info *EI)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_SIZE_T size;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab int ret = 1;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny Elf_Ehdr *ehdr = &EI_Ehdr;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI->elffd = fd;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny size = sizeof (Elf_Ehdr);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (pread64(EI->elffd, (void*)ehdr, size, 0) != size)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny ret = 0;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
97cca09008b0f5f24287c17660e644b0294c9ba2ab
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (file_xlatetom(ELF_T_EHDR, (char *)ehdr) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny ret = 0;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (EI->file == NULL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
97cca09008b0f5f24287c17660e644b0294c9ba2ab /*
97cca09008b0f5f24287c17660e644b0294c9ba2ab * Extended section or program indexes in use? If so, special
97cca09008b0f5f24287c17660e644b0294c9ba2ab * values in the ELF header redirect us to get the real values
97cca09008b0f5f24287c17660e644b0294c9ba2ab * from shdr[0].
97cca09008b0f5f24287c17660e644b0294c9ba2ab */
97cca09008b0f5f24287c17660e644b0294c9ba2ab EI_Ehdr_shnum = EI_Ehdr.e_shnum;
97cca09008b0f5f24287c17660e644b0294c9ba2ab EI_Ehdr_phnum = EI_Ehdr.e_phnum;
97cca09008b0f5f24287c17660e644b0294c9ba2ab EI_Ehdr_shstrndx = EI_Ehdr.e_shstrndx;
97cca09008b0f5f24287c17660e644b0294c9ba2ab if (((EI_Ehdr_shnum == 0) || (EI_Ehdr_phnum == PN_XNUM)) &&
97cca09008b0f5f24287c17660e644b0294c9ba2ab (EI_Ehdr.e_shoff != 0)) {
538414560648ad8b2b92897b55592cda64706375ab if (get_shdr(EI, 0) == ELF_READ_FAIL)
538414560648ad8b2b92897b55592cda64706375ab return (ELF_READ_FAIL);
97cca09008b0f5f24287c17660e644b0294c9ba2ab if (EI_Ehdr_shnum == 0)
97cca09008b0f5f24287c17660e644b0294c9ba2ab EI_Ehdr_shnum = EI_Shdr.sh_size;
97cca09008b0f5f24287c17660e644b0294c9ba2ab if ((EI_Ehdr_phnum == PN_XNUM) && (EI_Shdr.sh_info != 0))
97cca09008b0f5f24287c17660e644b0294c9ba2ab EI_Ehdr_phnum = EI_Shdr.sh_info;
97cca09008b0f5f24287c17660e644b0294c9ba2ab if (EI_Ehdr_shstrndx == SHN_XINDEX)
97cca09008b0f5f24287c17660e644b0294c9ba2ab EI_Ehdr_shstrndx = EI_Shdr.sh_link;
97cca09008b0f5f24287c17660e644b0294c9ba2ab }
97cca09008b0f5f24287c17660e644b0294c9ba2ab
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI->type = ehdr->e_type;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI->machine = ehdr->e_machine;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI->flags = ehdr->e_flags;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (ret == 0) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny (void) fprintf(stderr, gettext("%s: %s: can't "
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny "read ELF header\n"), File, EI->file);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (process_phdr(EI) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* We don't need section info for core files */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (ehdr->e_type != ET_CORE)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (process_shdr(EI) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_OKAY);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * get_phdr: reads program header of specified index.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyget_phdr(Elf_Info *EI, int inx)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_OFF_T off = 0;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_SIZE_T size;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
97cca09008b0f5f24287c17660e644b0294c9ba2ab if (inx >= EI_Ehdr_phnum)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny size = sizeof (Elf_Phdr);
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab off = (FILE_ELF_OFF_T)EI_Ehdr.e_phoff + (inx * size);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (pread64(EI->elffd, (void *)&EI_Phdr, size, off) != size)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (file_xlatetom(ELF_T_PHDR, (char *)&EI_Phdr) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_OKAY);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * get_shdr: reads section header of specified index.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyget_shdr(Elf_Info *EI, int inx)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_OFF_T off = 0;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_SIZE_T size;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
97cca09008b0f5f24287c17660e644b0294c9ba2ab /*
97cca09008b0f5f24287c17660e644b0294c9ba2ab * Prevent access to non-existent section headers.
97cca09008b0f5f24287c17660e644b0294c9ba2ab *
97cca09008b0f5f24287c17660e644b0294c9ba2ab * A value of 0 for e_shoff means that there is no section header
97cca09008b0f5f24287c17660e644b0294c9ba2ab * array in the file. A value of 0 for e_shndx does not necessarily
97cca09008b0f5f24287c17660e644b0294c9ba2ab * mean this - there can still be a 1-element section header array
97cca09008b0f5f24287c17660e644b0294c9ba2ab * to support extended section or program header indexes that
97cca09008b0f5f24287c17660e644b0294c9ba2ab * exceed the 16-bit fields used in the ELF header to represent them.
97cca09008b0f5f24287c17660e644b0294c9ba2ab */
97cca09008b0f5f24287c17660e644b0294c9ba2ab if ((EI_Ehdr.e_shoff == 0) || ((inx > 0) && (inx >= EI_Ehdr_shnum)))
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny size = sizeof (Elf_Shdr);
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab off = (FILE_ELF_OFF_T)EI_Ehdr.e_shoff + (inx * size);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (pread64(EI->elffd, (void *)&EI_Shdr, size, off) != size)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (file_xlatetom(ELF_T_SHDR, (char *)&EI_Shdr) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_OKAY);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * process_phdr: Read Program Headers and see if it is a core
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * file of either new or (pre-restructured /proc)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * type, read the name of the file that dumped this
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * core, else see if this is a dynamically linked.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyprocess_phdr(Elf_Info *EI)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny register int inx;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab Elf_Nhdr Nhdr, *nhdr; /* note header just read */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny Elf_Phdr *phdr = &EI_Phdr;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_SIZE_T nsz, nmsz, dsz;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_OFF_T offset;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab int class;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab int ntype;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab char *psinfo, *fname;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny nsz = sizeof (Elf_Nhdr);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny nhdr = &Nhdr;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny class = get_class();
97cca09008b0f5f24287c17660e644b0294c9ba2ab for (inx = 0; inx < EI_Ehdr_phnum; inx++) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (get_phdr(EI, inx) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* read the note if it is a core */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (phdr->p_type == PT_NOTE &&
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI_Ehdr.e_type == ET_CORE) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * If the next segment is also a note, use it instead.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (get_phdr(EI, inx+1) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (phdr->p_type != PT_NOTE) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* read the first phdr back */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (get_phdr(EI, inx) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny offset = phdr->p_offset;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (pread64(EI->elffd, (void *)nhdr, nsz, offset)
97cca09008b0f5f24287c17660e644b0294c9ba2ab != nsz)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* Translate the ELF note header */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (xlatetom_nhdr(nhdr) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny ntype = nhdr->n_type;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny nmsz = nhdr->n_namesz;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny dsz = nhdr->n_descsz;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny offset += nsz + ((nmsz + 0x03) & ~0x3);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if ((psinfo = malloc(dsz)) == NULL) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny int err = errno;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny (void) fprintf(stderr, gettext("%s: malloc "
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny "failed: %s\n"), File, strerror(err));
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny exit(1);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (pread64(EI->elffd, psinfo, dsz, offset) != dsz)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * We want to print the string contained
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * in psinfo->pr_fname[], where 'psinfo'
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * is either an old NT_PRPSINFO structure
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * or a new NT_PSINFO structure.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny *
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * Old core files have only type NT_PRPSINFO.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * New core files have type NT_PSINFO.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny *
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * These structures are also different by
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * virtue of being contained in a core file
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * of either 32-bit or 64-bit type.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny *
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * To further complicate matters, we ourself
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * might be compiled either 32-bit or 64-bit.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny *
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * For these reason, we just *know* the offsets of
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * pr_fname[] into the four different structures
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * here, regardless of how we are compiled.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (class == ELFCLASS32) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* 32-bit core file, 32-bit structures */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (ntype == NT_PSINFO)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny fname = psinfo + 88;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny else /* old: NT_PRPSINFO */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny fname = psinfo + 84;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny } else if (class == ELFCLASS64) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* 64-bit core file, 64-bit structures */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (ntype == NT_PSINFO)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny fname = psinfo + 136;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny else /* old: NT_PRPSINFO */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny fname = psinfo + 120;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI->core_type = (ntype == NT_PRPSINFO)?
97cca09008b0f5f24287c17660e644b0294c9ba2ab EC_OLDCORE : EC_NEWCORE;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny (void) memcpy(EI->fname, fname, strlen(fname));
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny free(psinfo);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (phdr->p_type == PT_DYNAMIC) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI->dynamic = B_TRUE;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_OKAY);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny/*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * process_shdr: Read Section Headers to attempt to get HW/SW
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * capabilities by looking at the SUNW_cap
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * section and set string in Elf_Info.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * Also look for symbol tables and debug
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * information sections. Set the "stripped" field
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * in Elf_Info with corresponding flags.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nystatic int
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6nyprocess_shdr(Elf_Info *EI)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny{
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny int capn, mac;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny int i, j, idx;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_OFF_T cap_off;
0fe5e696eb581c66085be2cec9a0bf65978ba6d6ab FILE_ELF_SIZE_T csize;
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe char *strtab;
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe size_t strtab_sz;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny Elf_Cap Chdr;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny Elf_Shdr *shdr = &EI_Shdr;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny csize = sizeof (Elf_Cap);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny mac = EI_Ehdr.e_machine;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* if there are no sections, return success anyway */
97cca09008b0f5f24287c17660e644b0294c9ba2ab if (EI_Ehdr.e_shoff == 0 && EI_Ehdr_shnum == 0)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_OKAY);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* read section names from String Section */
97cca09008b0f5f24287c17660e644b0294c9ba2ab if (get_shdr(EI, EI_Ehdr_shstrndx) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe if ((strtab = malloc(shdr->sh_size)) == NULL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe if (pread64(EI->elffd, strtab, shdr->sh_size, shdr->sh_offset)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny != shdr->sh_size)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe strtab_sz = shdr->sh_size;
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /* read all the sections and process them */
97cca09008b0f5f24287c17660e644b0294c9ba2ab for (idx = 1, i = 0; i < EI_Ehdr_shnum; idx++, i++) {
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe char *shnam;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (get_shdr(EI, i) == ELF_READ_FAIL)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (shdr->sh_type == SHT_NULL) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny idx--;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny continue;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny cap_off = shdr->sh_offset;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (shdr->sh_type == SHT_SUNW_cap) {
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe char capstr[128];
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (shdr->sh_size == 0 || shdr->sh_entsize == 0) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny (void) fprintf(stderr, ELF_ERR_ELFCAP1,
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny File, EI->file);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny capn = (shdr->sh_size / shdr->sh_entsize);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny for (j = 0; j < capn; j++) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * read cap and xlate the values
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (pread64(EI->elffd, &Chdr, csize, cap_off)
97cca09008b0f5f24287c17660e644b0294c9ba2ab != csize ||
97cca09008b0f5f24287c17660e644b0294c9ba2ab file_xlatetom(ELF_T_CAP, (char *)&Chdr)
97cca09008b0f5f24287c17660e644b0294c9ba2ab == 0) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny (void) fprintf(stderr, ELF_ERR_ELFCAP2,
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny File, EI->file);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_FAIL);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny cap_off += csize;
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe /*
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe * Each capatibility group is terminated with
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe * CA_SUNW_NULL. Groups other than the first
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe * represent symbol capabilities, and aren't
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe * interesting here.
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe */
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe if (Chdr.c_tag == CA_SUNW_NULL)
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe break;
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe (void) elfcap_tag_to_str(ELFCAP_STYLE_UC,
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe Chdr.c_tag, Chdr.c_un.c_val, capstr,
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe sizeof (capstr), ELFCAP_FMT_SNGSPACE,
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe mac);
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe if ((*EI->cap_str != '\0') && (*capstr != '\0'))
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe (void) strlcat(EI->cap_str, " ",
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe sizeof (EI->cap_str));
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe (void) strlcat(EI->cap_str, capstr,
3d6a6d03a2b1d567b03fb49347aee6b5223261cbRichard Lowe sizeof (EI->cap_str));
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny /*
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * Definition time:
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * - "not stripped" means that an executable file
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * contains a Symbol Table (.symtab)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * - "stripped" means that an executable file
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * does not contain a Symbol Table.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * When strip -l or strip -x is run, it strips the
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * debugging information (.line section name (strip -l),
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * .line, .debug*, .stabs*, .dwarf* section names
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * and SHT_SUNW_DEBUGSTR and SHT_SUNW_DEBUG
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * section types (strip -x), however the Symbol
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * Table will still be present.
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * Therefore, if
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * - No Symbol Table present, then report
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * "stripped"
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * - Symbol Table present with debugging
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * information (line number or debug section names,
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * or SHT_SUNW_DEBUGSTR or SHT_SUNW_DEBUG section
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * types) then report:
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * "not stripped"
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * - Symbol Table present with no debugging
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * information (line number or debug section names,
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * or SHT_SUNW_DEBUGSTR or SHT_SUNW_DEBUG section
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * types) then report:
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * "not stripped, no debugging information
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny * available"
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny */
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if ((EI->stripped & E_NOSTRIP) == E_NOSTRIP)
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny continue;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (!(EI->stripped & E_SYMTAB) &&
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny (shdr->sh_type == SHT_SYMTAB)) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI->stripped |= E_SYMTAB;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny continue;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe if (shdr->sh_name >= strtab_sz)
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe shnam = NULL;
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe else
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe shnam = &strtab[shdr->sh_name];
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny if (!(EI->stripped & E_DBGINF) &&
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny ((shdr->sh_type == SHT_SUNW_DEBUG) ||
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny (shdr->sh_type == SHT_SUNW_DEBUGSTR) ||
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe (shnam != NULL && is_in_list(shnam)))) {
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny EI->stripped |= E_DBGINF;
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny }
91600d919baafe4e4d8bdee4168878036351c556Richard Lowe free(strtab);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny return (ELF_READ_OKAY);
c2c65e21c1fd025c3fc6103cc713dd5343fc9ad6ny}