cregit-Linux how code gets into the kernel

Release 4.10 fs/compat_binfmt_elf.c

Directory: fs
/*
 * 32-bit compatibility support for ELF format executables and core dumps.
 *
 * Copyright (C) 2007 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License v.2.
 *
 * Red Hat Author: Roland McGrath.
 *
 * This file is used in a 64-bit kernel that wants to support 32-bit ELF.
 * asm/elf.h is responsible for defining the compat_* and COMPAT_* macros
 * used below, with definitions appropriate for 32-bit ABI compatibility.
 *
 * We use macros to rename the ABI types and machine-dependent
 * functions used in binfmt_elf.c to compat versions.
 */

#include <linux/elfcore-compat.h>
#include <linux/time.h>

/*
 * Rename the basic ELF layout types to refer to the 32-bit class of files.
 */

#undef	ELF_CLASS

#define ELF_CLASS	ELFCLASS32


#undef	elfhdr

#undef	elf_phdr

#undef	elf_shdr

#undef	elf_note

#undef	elf_addr_t

#define elfhdr		elf32_hdr

#define elf_phdr	elf32_phdr

#define elf_shdr	elf32_shdr

#define elf_note	elf32_note

#define elf_addr_t	Elf32_Addr

/*
 * Some data types as stored in coredump.
 */

#define user_long_t		compat_long_t

#define user_siginfo_t		compat_siginfo_t

#define copy_siginfo_to_user	copy_siginfo_to_user32

/*
 * The machine-dependent core note format types are defined in elfcore-compat.h,
 * which requires asm/elf.h to define compat_elf_gregset_t et al.
 */

#define elf_prstatus	compat_elf_prstatus

#define elf_prpsinfo	compat_elf_prpsinfo

/*
 * Compat version of cputime_to_compat_timeval, perhaps this
 * should be an inline in <linux/compat.h>.
 */

static void cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value) { struct timeval tv; cputime_to_timeval(cputime, &tv); value->tv_sec = tv.tv_sec; value->tv_usec = tv.tv_usec; }

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roland mcgrathroland mcgrath43100.00%1100.00%
Total43100.00%1100.00%

#undef cputime_to_timeval #define cputime_to_timeval cputime_to_compat_timeval /* * To use this file, asm/elf.h must define compat_elf_check_arch. * The other following macros can be defined if the compat versions * differ from the native ones, or omitted when they match. */ #undef ELF_ARCH #undef elf_check_arch #define elf_check_arch compat_elf_check_arch #ifdef COMPAT_ELF_PLATFORM #undef ELF_PLATFORM #define ELF_PLATFORM COMPAT_ELF_PLATFORM #endif #ifdef COMPAT_ELF_HWCAP #undef ELF_HWCAP #define ELF_HWCAP COMPAT_ELF_HWCAP #endif #ifdef COMPAT_ELF_HWCAP2 #undef ELF_HWCAP2 #define ELF_HWCAP2 COMPAT_ELF_HWCAP2 #endif #ifdef COMPAT_ARCH_DLINFO #undef ARCH_DLINFO #define ARCH_DLINFO COMPAT_ARCH_DLINFO #endif #ifdef COMPAT_ELF_ET_DYN_BASE #undef ELF_ET_DYN_BASE #define ELF_ET_DYN_BASE COMPAT_ELF_ET_DYN_BASE #endif #ifdef COMPAT_ELF_EXEC_PAGESIZE #undef ELF_EXEC_PAGESIZE #define ELF_EXEC_PAGESIZE COMPAT_ELF_EXEC_PAGESIZE #endif #ifdef COMPAT_ELF_PLAT_INIT #undef ELF_PLAT_INIT #define ELF_PLAT_INIT COMPAT_ELF_PLAT_INIT #endif #ifdef COMPAT_SET_PERSONALITY #undef SET_PERSONALITY #define SET_PERSONALITY COMPAT_SET_PERSONALITY #endif #ifdef compat_start_thread #undef start_thread #define start_thread compat_start_thread #endif #ifdef compat_arch_setup_additional_pages #undef ARCH_HAS_SETUP_ADDITIONAL_PAGES #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 #undef arch_setup_additional_pages #define arch_setup_additional_pages compat_arch_setup_additional_pages #endif /* * Rename a few of the symbols that binfmt_elf.c will define. * These are all local so the names don't really matter, but it * might make some debugging less confusing not to duplicate them. */ #define elf_format compat_elf_format #define init_elf_binfmt init_compat_elf_binfmt #define exit_elf_binfmt exit_compat_elf_binfmt /* * We share all the actual code with the native (64-bit) version. */ #include "binfmt_elf.c"

Overall Contributors

PersonTokensPropCommitsCommitProp
roland mcgrathroland mcgrath24688.49%120.00%
denys vlasenkodenys vlasenko134.68%240.00%
ard biesheuvelard biesheuvel124.32%120.00%
daisuke hatayamadaisuke hatayama72.52%120.00%
Total278100.00%5100.00%
Directory: fs
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