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-rw-r--r--mdk-stage1/insmod-busybox/insmod.c3758
1 files changed, 0 insertions, 3758 deletions
diff --git a/mdk-stage1/insmod-busybox/insmod.c b/mdk-stage1/insmod-busybox/insmod.c
deleted file mode 100644
index e6e5b8f5f..000000000
--- a/mdk-stage1/insmod-busybox/insmod.c
+++ /dev/null
@@ -1,3758 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * Mini insmod implementation for busybox
- *
- * This version of insmod supports x86, ARM, SH3/4, powerpc, m68k,
- * MIPS, and x86-64.
- *
- *
- * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
- * Copyright (C) 1999-2002 Erik Andersen <andersee@debian.org>
- * Written by Erik Andersen and Ron Alder <alder@lineo.com>
- *
- * Modified by Bryan Rittmeyer <bryan@ixiacom.com> to support SH4
- * and (theoretically) SH3. I have only tested SH4 in little endian mode.
- *
- * Modified by Alcove, Julien Gaulmin <julien.gaulmin@alcove.fr> and
- * Nicolas Ferre <nicolas.ferre@alcove.fr> to support ARM7TDMI. Only
- * very minor changes required to also work with StrongArm and presumably
- * all ARM based systems.
- *
- * Magnus Damm <damm@opensource.se> 22-May-2002.
- * The plt and got code are now using the same structs.
- * Added generic linked list code to fully support PowerPC.
- * Replaced the mess in arch_apply_relocation() with architecture blocks.
- * The arch_create_got() function got cleaned up with architecture blocks.
- * These blocks should be easy maintain and sync with obj_xxx.c in modutils.
- *
- * Magnus Damm <damm@opensource.se> added PowerPC support 20-Feb-2001.
- * PowerPC specific code stolen from modutils-2.3.16,
- * written by Paul Mackerras, Copyright 1996, 1997 Linux International.
- * I've only tested the code on mpc8xx platforms in big-endian mode.
- * Did some cleanup and added BB_USE_xxx_ENTRIES...
- *
- * Quinn Jensen <jensenq@lineo.com> added MIPS support 23-Feb-2001.
- * based on modutils-2.4.2
- * MIPS specific support for Elf loading and relocation.
- * Copyright 1996, 1997 Linux International.
- * Contributed by Ralf Baechle <ralf@gnu.ai.mit.edu>
- *
- * Based almost entirely on the Linux modutils-2.3.11 implementation.
- * Copyright 1996, 1997 Linux International.
- * New implementation contributed by Richard Henderson <rth@tamu.edu>
- * Based on original work by Bjorn Ekwall <bj0rn@blox.se>
- * Restructured (and partly rewritten) by:
- * Björn Ekwall <bj0rn@blox.se> February 1999
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include "../insmod.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <errno.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <ctype.h>
-#include <assert.h>
-#include <string.h>
-#include <fcntl.h>
-#include <sys/utsname.h>
-#include "busybox.h"
-
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
-# undef BB_FEATURE_OLD_MODULE_INTERFACE
-# define new_sys_init_module init_module
-#else
-# define old_sys_init_module init_module
-#endif
-
-/* FIXME: Remove once we switched to dietlibc 0.22 */
-#if 0
-
-#undef new_sys_init_module
-#define __NR_new_sys_init_module __NR_init_module
-struct new_module;
-_syscall2(int, new_sys_init_module, const char *, name,
- const struct new_module *, info)
-
-#undef old_sys_init_module
-#define __NR_old_sys_init_module __NR_init_module
-struct old_mod_routines;
-struct old_symbol_table;
-_syscall5(int, old_sys_init_module, const char *, name, char *, code,
- unsigned, codesize, struct old_mod_routines *, routines,
- struct old_symbol_table *, symtab)
-
-_syscall1(int, delete_module, const char *, name)
-
-#if defined(__i386__) || defined(__m68k__) || defined(__arm__)
-/* Jump through hoops to fixup error return codes */
-#define __NR__create_module __NR_create_module
-static inline _syscall2(long, _create_module, const char *, name, size_t,
- size)
-unsigned long create_module(const char *name, size_t size)
-{
- long ret = _create_module(name, size);
-
- if (ret == -1 && errno > 125) {
- ret = -errno;
- errno = 0;
- }
- return ret;
-}
-#else
-_syscall2(unsigned long, create_module, const char *, name, size_t, size)
-#endif
-
-#endif
-
-#ifdef BB_FEATURE_INSMOD_LOADINKMEM
-#define LOADBITS 0
-#else
-#define LOADBITS 1
-#endif
-
-#if defined(__arm__)
-#define BB_USE_PLT_ENTRIES
-#define BB_PLT_ENTRY_SIZE 8
-#define BB_USE_GOT_ENTRIES
-#define BB_GOT_ENTRY_SIZE 8
-#define BB_USE_SINGLE
-
-#define MATCH_MACHINE(x) (x == EM_ARM)
-#define SHT_RELM SHT_REL
-#define Elf32_RelM Elf32_Rel
-#define ELFCLASSM ELFCLASS32
-#endif
-
-#if defined(__i386__)
-#define BB_USE_GOT_ENTRIES
-#define BB_GOT_ENTRY_SIZE 4
-#define BB_USE_SINGLE
-
-#ifndef EM_486
-#define MATCH_MACHINE(x) (x == EM_386)
-#else
-#define MATCH_MACHINE(x) (x == EM_386 || x == EM_486)
-#endif
-
-#define SHT_RELM SHT_REL
-#define Elf32_RelM Elf32_Rel
-#define ELFCLASSM ELFCLASS32
-#endif
-
-#if defined(__x86_64__)
-#define BB_USE_GOT_ENTRIES
-#define BB_GOT_ENTRY_SIZE 8
-#define BB_USE_SINGLE
-
-#define MATCH_MACHINE(x) (x == EM_X86_64)
-
-#define SHT_RELM SHT_RELA
-#define Elf64_RelM Elf64_Rela
-#define ELFCLASSM ELFCLASS64
-#endif
-
-#if defined(__mc68000__)
-#define BB_USE_GOT_ENTRIES
-#define BB_GOT_ENTRY_SIZE 4
-#define BB_USE_SINGLE
-
-#define MATCH_MACHINE(x) (x == EM_68K)
-#define SHT_RELM SHT_RELA
-#define Elf32_RelM Elf32_Rela
-#endif
-
-#if defined(__mips__)
-/* Account for ELF spec changes. */
-#ifndef EM_MIPS_RS3_LE
-#ifdef EM_MIPS_RS4_BE
-#define EM_MIPS_RS3_LE EM_MIPS_RS4_BE
-#else
-#define EM_MIPS_RS3_LE 10
-#endif
-#endif /* !EM_MIPS_RS3_LE */
-
-#define MATCH_MACHINE(x) (x == EM_MIPS || x == EM_MIPS_RS3_LE)
-#define SHT_RELM SHT_REL
-#define Elf32_RelM Elf32_Rel
-#define ELFCLASSM ELFCLASS32
-#define ARCHDATAM "__dbe_table"
-#endif
-
-#if defined(__powerpc__)
-#define BB_USE_PLT_ENTRIES
-#define BB_PLT_ENTRY_SIZE 16
-#define BB_USE_PLT_LIST
-#define BB_LIST_ARCHTYPE ElfW(Addr)
-#define BB_USE_LIST
-
-#define MATCH_MACHINE(x) (x == EM_PPC)
-#define SHT_RELM SHT_RELA
-#define Elf32_RelM Elf32_Rela
-#define ELFCLASSM ELFCLASS32
-#define ARCHDATAM "__ftr_fixup"
-#endif
-
-#if defined(__sh__)
-#define BB_USE_GOT_ENTRIES
-#define BB_GOT_ENTRY_SIZE 4
-#define BB_USE_SINGLE
-
-#define MATCH_MACHINE(x) (x == EM_SH)
-#define SHT_RELM SHT_RELA
-#define Elf32_RelM Elf32_Rela
-#define ELFCLASSM ELFCLASS32
-
-/* the SH changes have only been tested on the SH4 in =little endian= mode */
-/* I'm not sure about big endian, so let's warn: */
-
-#if (defined(__SH4__) || defined(__SH3__)) && defined(__BIG_ENDIAN__)
-#error insmod.c may require changes for use on big endian SH4/SH3
-#endif
-
-/* it may or may not work on the SH1/SH2... So let's error on those
- also */
-#if (defined(__sh__) && (!(defined(__SH3__) || defined(__SH4__))))
-#error insmod.c may require changes for non-SH3/SH4 use
-#endif
-#endif
-
-#ifndef SHT_RELM
-#error Sorry, but insmod.c does not yet support this architecture...
-#endif
-
-//----------------------------------------------------------------------------
-//--------modutils module.h, lines 45-242
-//----------------------------------------------------------------------------
-
-/* Definitions for the Linux module syscall interface.
- Copyright 1996, 1997 Linux International.
-
- Contributed by Richard Henderson <rth@tamu.edu>
-
- This file is part of the Linux modutils.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-
-#ifndef MODUTILS_MODULE_H
-#define MODUTILS_MODULE_H
-
-/* This file contains the structures used by the 2.0 and 2.1 kernels.
- We do not use the kernel headers directly because we do not wish
- to be dependant on a particular kernel version to compile insmod. */
-
-
-/*======================================================================*/
-/* The structures used by Linux 2.0. */
-
-/* The symbol format used by get_kernel_syms(2). */
-struct old_kernel_sym
-{
- unsigned long value;
- char name[60];
-};
-
-struct old_module_ref
-{
- unsigned long module; /* kernel addresses */
- unsigned long next;
-};
-
-struct old_module_symbol
-{
- unsigned long addr;
- unsigned long name;
-};
-
-struct old_symbol_table
-{
- int size; /* total, including string table!!! */
- int n_symbols;
- int n_refs;
- struct old_module_symbol symbol[0]; /* actual size defined by n_symbols */
- struct old_module_ref ref[0]; /* actual size defined by n_refs */
-};
-
-struct old_mod_routines
-{
- unsigned long init;
- unsigned long cleanup;
-};
-
-struct old_module
-{
- unsigned long next;
- unsigned long ref; /* the list of modules that refer to me */
- unsigned long symtab;
- unsigned long name;
- int size; /* size of module in pages */
- unsigned long addr; /* address of module */
- int state;
- unsigned long cleanup; /* cleanup routine */
-};
-
-/* Sent to init_module(2) or'ed into the code size parameter. */
-static const int OLD_MOD_AUTOCLEAN = 0x40000000; /* big enough, but no sign problems... */
-
-int get_kernel_syms(struct old_kernel_sym *);
-int old_sys_init_module(const char *name, char *code, unsigned codesize,
- struct old_mod_routines *, struct old_symbol_table *);
-
-/*======================================================================*/
-/* For sizeof() which are related to the module platform and not to the
- environment isnmod is running in, use sizeof_xx instead of sizeof(xx). */
-
-#define tgt_sizeof_char sizeof(char)
-#define tgt_sizeof_short sizeof(short)
-#define tgt_sizeof_int sizeof(int)
-#define tgt_sizeof_long sizeof(long)
-#define tgt_sizeof_char_p sizeof(char *)
-#define tgt_sizeof_void_p sizeof(void *)
-#define tgt_long long
-
-#if defined(__sparc__) && !defined(__sparc_v9__) && defined(ARCH_sparc64)
-#undef tgt_sizeof_long
-#undef tgt_sizeof_char_p
-#undef tgt_sizeof_void_p
-#undef tgt_long
-static const int tgt_sizeof_long = 8;
-static const int tgt_sizeof_char_p = 8;
-static const int tgt_sizeof_void_p = 8;
-#define tgt_long long long
-#endif
-
-/*======================================================================*/
-/* The structures used in Linux 2.1. */
-
-/* Note: new_module_symbol does not use tgt_long intentionally */
-struct new_module_symbol
-{
- unsigned long value;
- unsigned long name;
-};
-
-struct new_module_persist;
-
-struct new_module_ref
-{
- unsigned tgt_long dep; /* kernel addresses */
- unsigned tgt_long ref;
- unsigned tgt_long next_ref;
-};
-
-struct new_module
-{
- unsigned tgt_long size_of_struct; /* == sizeof(module) */
- unsigned tgt_long next;
- unsigned tgt_long name;
- unsigned tgt_long size;
-
- tgt_long usecount;
- unsigned tgt_long flags; /* AUTOCLEAN et al */
-
- unsigned nsyms;
- unsigned ndeps;
-
- unsigned tgt_long syms;
- unsigned tgt_long deps;
- unsigned tgt_long refs;
- unsigned tgt_long init;
- unsigned tgt_long cleanup;
- unsigned tgt_long ex_table_start;
- unsigned tgt_long ex_table_end;
-#ifdef __alpha__
- unsigned tgt_long gp;
-#endif
- /* Everything after here is extension. */
- unsigned tgt_long persist_start;
- unsigned tgt_long persist_end;
- unsigned tgt_long can_unload;
- unsigned tgt_long runsize;
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
- const char *kallsyms_start; /* All symbols for kernel debugging */
- const char *kallsyms_end;
- const char *archdata_start; /* arch specific data for module */
- const char *archdata_end;
- const char *kernel_data; /* Reserved for kernel internal use */
-#endif
-};
-
-#ifdef ARCHDATAM
-#define ARCHDATA_SEC_NAME ARCHDATAM
-#else
-#define ARCHDATA_SEC_NAME "__archdata"
-#endif
-#define KALLSYMS_SEC_NAME "__kallsyms"
-
-
-struct new_module_info
-{
- unsigned long addr;
- unsigned long size;
- unsigned long flags;
- long usecount;
-};
-
-/* Bits of module.flags. */
-static const int NEW_MOD_RUNNING = 1;
-static const int NEW_MOD_DELETED = 2;
-static const int NEW_MOD_AUTOCLEAN = 4;
-static const int NEW_MOD_VISITED = 8;
-static const int NEW_MOD_USED_ONCE = 16;
-
-int new_sys_init_module(const char *name, const struct new_module *);
-int query_module(const char *name, int which, void *buf, size_t bufsize,
- size_t *ret);
-
-/* Values for query_module's which. */
-
-static const int QM_MODULES = 1;
-static const int QM_DEPS = 2;
-static const int QM_REFS = 3;
-static const int QM_SYMBOLS = 4;
-static const int QM_INFO = 5;
-
-/*======================================================================*/
-/* The system calls unchanged between 2.0 and 2.1. */
-
-unsigned long create_module(const char *, size_t);
-int delete_module(const char *);
-
-
-#endif /* module.h */
-
-//----------------------------------------------------------------------------
-//--------end of modutils module.h
-//----------------------------------------------------------------------------
-
-
-
-//----------------------------------------------------------------------------
-//--------modutils obj.h, lines 253-462
-//----------------------------------------------------------------------------
-
-/* Elf object file loading and relocation routines.
- Copyright 1996, 1997 Linux International.
-
- Contributed by Richard Henderson <rth@tamu.edu>
-
- This file is part of the Linux modutils.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-
-#ifndef MODUTILS_OBJ_H
-static const int MODUTILS_OBJ_H = 1;
-
-/* The relocatable object is manipulated using elfin types. */
-
-#include <stdio.h>
-#include <elf.h>
-#include <endian.h>
-
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#define ELFDATAM ELFDATA2LSB
-#elif __BYTE_ORDER == __BIG_ENDIAN
-#define ELFDATAM ELFDATA2MSB
-#endif
-
-#ifndef ElfW
-# if ELFCLASSM == ELFCLASS32
-# define ElfW(x) Elf32_ ## x
-# define ELFW(x) ELF32_ ## x
-# else
-# define ElfW(x) Elf64_ ## x
-# define ELFW(x) ELF64_ ## x
-# endif
-#endif
-
-/* For some reason this is missing from libc5. */
-#ifndef ELF32_ST_INFO
-# define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
-#endif
-
-#ifndef ELF64_ST_INFO
-# define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
-#endif
-
-struct obj_string_patch;
-struct obj_symbol_patch;
-
-struct obj_section
-{
- ElfW(Shdr) header;
- const char *name;
- char *contents;
- struct obj_section *load_next;
- int idx;
-};
-
-struct obj_symbol
-{
- struct obj_symbol *next; /* hash table link */
- const char *name;
- unsigned long value;
- unsigned long size;
- int secidx; /* the defining section index/module */
- int info;
- int ksymidx; /* for export to the kernel symtab */
- int referenced; /* actually used in the link */
-};
-
-/* Hardcode the hash table size. We shouldn't be needing so many
- symbols that we begin to degrade performance, and we get a big win
- by giving the compiler a constant divisor. */
-
-#define HASH_BUCKETS 521
-
-struct obj_file
-{
- ElfW(Ehdr) header;
- ElfW(Addr) baseaddr;
- struct obj_section **sections;
- struct obj_section *load_order;
- struct obj_section **load_order_search_start;
- struct obj_string_patch *string_patches;
- struct obj_symbol_patch *symbol_patches;
- int (*symbol_cmp)(const char *, const char *);
- unsigned long (*symbol_hash)(const char *);
- unsigned long local_symtab_size;
- struct obj_symbol **local_symtab;
- struct obj_symbol *symtab[HASH_BUCKETS];
-};
-
-enum obj_reloc
-{
- obj_reloc_ok,
- obj_reloc_overflow,
- obj_reloc_dangerous,
- obj_reloc_unhandled
-};
-
-struct obj_string_patch
-{
- struct obj_string_patch *next;
- int reloc_secidx;
- ElfW(Addr) reloc_offset;
- ElfW(Addr) string_offset;
-};
-
-struct obj_symbol_patch
-{
- struct obj_symbol_patch *next;
- int reloc_secidx;
- ElfW(Addr) reloc_offset;
- struct obj_symbol *sym;
-};
-
-
-/* Generic object manipulation routines. */
-
-static unsigned long obj_elf_hash(const char *);
-
-static unsigned long obj_elf_hash_n(const char *, unsigned long len);
-
-static struct obj_symbol *obj_find_symbol (struct obj_file *f,
- const char *name);
-
-static ElfW(Addr) obj_symbol_final_value(struct obj_file *f,
- struct obj_symbol *sym);
-
-#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
-static void obj_set_symbol_compare(struct obj_file *f,
- int (*cmp)(const char *, const char *),
- unsigned long (*hash)(const char *));
-#endif
-
-static struct obj_section *obj_find_section (struct obj_file *f,
- const char *name);
-
-static void obj_insert_section_load_order (struct obj_file *f,
- struct obj_section *sec);
-
-static struct obj_section *obj_create_alloced_section (struct obj_file *f,
- const char *name,
- unsigned long align,
- unsigned long size);
-
-static struct obj_section *obj_create_alloced_section_first (struct obj_file *f,
- const char *name,
- unsigned long align,
- unsigned long size);
-
-static void *obj_extend_section (struct obj_section *sec, unsigned long more);
-
-static int obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
- const char *string);
-
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
-static int obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
- struct obj_symbol *sym);
-#endif
-
-static int obj_check_undefineds(struct obj_file *f);
-
-static void obj_allocate_commons(struct obj_file *f);
-
-static unsigned long obj_load_size (struct obj_file *f);
-
-static int obj_relocate (struct obj_file *f, ElfW(Addr) base);
-
-static struct obj_file *obj_load(FILE *f, int loadprogbits);
-
-static int obj_create_image (struct obj_file *f, char *image);
-
-/* Architecture specific manipulation routines. */
-
-static struct obj_file *arch_new_file (void);
-
-static struct obj_section *arch_new_section (void);
-
-static struct obj_symbol *arch_new_symbol (void);
-
-static enum obj_reloc arch_apply_relocation (struct obj_file *f,
- struct obj_section *targsec,
- struct obj_section *symsec,
- struct obj_symbol *sym,
- ElfW(RelM) *rel, ElfW(Addr) value);
-
-static void arch_create_got (struct obj_file *f);
-
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
-static int arch_init_module (struct obj_file *f, struct new_module *);
-#endif
-
-#endif /* obj.h */
-//----------------------------------------------------------------------------
-//--------end of modutils obj.h
-//----------------------------------------------------------------------------
-
-
-
-
-
-#define _PATH_MODULES "/lib/modules"
-static const int STRVERSIONLEN = 32;
-
-/*======================================================================*/
-
-static const int flag_force_load = 1;
-static const int flag_autoclean = 0;
-static const int flag_quiet = 0;
-static const int flag_export = 1;
-
-
-/*======================================================================*/
-
-#if defined(BB_USE_LIST)
-
-struct arch_list_entry
-{
- struct arch_list_entry *next;
- BB_LIST_ARCHTYPE addend;
- int offset;
- int inited : 1;
-};
-
-#endif
-
-#if defined(BB_USE_SINGLE)
-
-struct arch_single_entry
-{
- int offset;
- int inited : 1;
- int allocated : 1;
-};
-
-#endif
-
-#if defined(__mips__)
-struct mips_hi16
-{
- struct mips_hi16 *next;
- Elf32_Addr *addr;
- Elf32_Addr value;
-};
-#endif
-
-struct arch_file {
- struct obj_file root;
-#if defined(BB_USE_PLT_ENTRIES)
- struct obj_section *plt;
-#endif
-#if defined(BB_USE_GOT_ENTRIES)
- struct obj_section *got;
-#endif
-#if defined(__mips__)
- struct mips_hi16 *mips_hi16_list;
-#endif
-};
-
-struct arch_symbol {
- struct obj_symbol root;
-#if defined(BB_USE_PLT_ENTRIES)
-#if defined(BB_USE_PLT_LIST)
- struct arch_list_entry *pltent;
-#else
- struct arch_single_entry pltent;
-#endif
-#endif
-#if defined(BB_USE_GOT_ENTRIES)
- struct arch_single_entry gotent;
-#endif
-};
-
-
-struct external_module {
- const char *name;
- ElfW(Addr) addr;
- int used;
- size_t nsyms;
- struct new_module_symbol *syms;
-};
-
-static struct new_module_symbol *ksyms;
-static size_t nksyms;
-
-static struct external_module *ext_modules;
-static int n_ext_modules;
-static int n_ext_modules_used;
-extern int delete_module(const char *);
-
-#ifndef FILENAME_MAX
-#define FILENAME_MAX 4095
-#endif
-
-static char m_filename[FILENAME_MAX];
-static char m_fullName[FILENAME_MAX];
-
-
-
-/*======================================================================*/
-
-static struct obj_file *arch_new_file(void)
-{
- struct arch_file *f;
- f = xmalloc(sizeof(*f));
-
- memset(f, 0, sizeof(*f));
-
- return &f->root;
-}
-
-static struct obj_section *arch_new_section(void)
-{
- return xmalloc(sizeof(struct obj_section));
-}
-
-static struct obj_symbol *arch_new_symbol(void)
-{
- struct arch_symbol *sym;
- sym = xmalloc(sizeof(*sym));
-
- memset(sym, 0, sizeof(*sym));
-
- return &sym->root;
-}
-
-static enum obj_reloc
-arch_apply_relocation(struct obj_file *f,
- struct obj_section *targsec,
- struct obj_section *symsec,
- struct obj_symbol *sym,
- ElfW(RelM) *rel, ElfW(Addr) v)
-{
- struct arch_file *ifile = (struct arch_file *) f;
- enum obj_reloc ret = obj_reloc_ok;
- ElfW(Addr) *loc = (ElfW(Addr) *) (targsec->contents + rel->r_offset);
- ElfW(Addr) dot = targsec->header.sh_addr + rel->r_offset;
-#if defined(BB_USE_GOT_ENTRIES) || defined(BB_USE_PLT_ENTRIES)
- struct arch_symbol *isym = (struct arch_symbol *) sym;
-#endif
-#if defined(BB_USE_GOT_ENTRIES)
- ElfW(Addr) got = ifile->got ? ifile->got->header.sh_addr : 0;
-#endif
-#if defined(BB_USE_PLT_ENTRIES)
- ElfW(Addr) plt = ifile->plt ? ifile->plt->header.sh_addr : 0;
- unsigned long *ip;
-#if defined(BB_USE_PLT_LIST)
- struct arch_list_entry *pe;
-#else
- struct arch_single_entry *pe;
-#endif
-#endif
-
- switch (ELF32_R_TYPE(rel->r_info)) {
-
-#if defined(__arm__)
- case R_ARM_NONE:
- break;
-
- case R_ARM_ABS32:
- *loc += v;
- break;
-
- case R_ARM_GOT32:
- goto bb_use_got;
-
- case R_ARM_GOTPC:
- /* relative reloc, always to _GLOBAL_OFFSET_TABLE_
- * (which is .got) similar to branch,
- * but is full 32 bits relative */
-
- assert(got);
- *loc += got - dot;
- break;
-
- case R_ARM_PC24:
- case R_ARM_PLT32:
- goto bb_use_plt;
-
- case R_ARM_GOTOFF: /* address relative to the got */
- assert(got);
- *loc += v - got;
- break;
-
-#elif defined(__i386__)
-
- case R_386_NONE:
- break;
-
- case R_386_32:
- *loc += v;
- break;
-
- case R_386_PLT32:
- case R_386_PC32:
- *loc += v - dot;
- break;
-
- case R_386_GLOB_DAT:
- case R_386_JMP_SLOT:
- *loc = v;
- break;
-
- case R_386_RELATIVE:
- *loc += f->baseaddr;
- break;
-
- case R_386_GOTPC:
- assert(got != 0);
- *loc += got - dot;
- break;
-
- case R_386_GOT32:
- goto bb_use_got;
-
- case R_386_GOTOFF:
- assert(got != 0);
- *loc += v - got;
- break;
-
-#elif defined(__x86_64__)
-
- case R_X86_64_NONE:
- break;
-
- case R_X86_64_64:
- *loc += v;
- break;
-
- case R_X86_64_32:
- *(unsigned int *) loc += v;
- break;
-
- case R_X86_64_32S:
- *(signed int *) loc += v;
- break;
-
- case R_X86_64_16:
- *(unsigned short *) loc += v;
- break;
-
- case R_X86_64_8:
- *(unsigned char *) loc += v;
- break;
-
- case R_X86_64_PC32:
- *(unsigned int *) loc += v - dot;
- break;
-
- case R_X86_64_PC16:
- *(unsigned short *) loc += v - dot;
- break;
-
- case R_X86_64_PC8:
- *(unsigned char *) loc += v - dot;
- break;
-
- case R_X86_64_GLOB_DAT:
- case R_X86_64_JUMP_SLOT:
- *loc = v;
- break;
-
- case R_X86_64_RELATIVE:
- *loc += f->baseaddr;
- break;
-
- case R_X86_64_GOT32:
- case R_X86_64_GOTPCREL:
- goto bb_use_got;
-
-#elif defined(__mc68000__)
-
- case R_68K_NONE:
- break;
-
- case R_68K_32:
- *loc += v;
- break;
-
- case R_68K_8:
- if (v > 0xff) {
- ret = obj_reloc_overflow;
- }
- *(char *)loc = v;
- break;
-
- case R_68K_16:
- if (v > 0xffff) {
- ret = obj_reloc_overflow;
- }
- *(short *)loc = v;
- break;
-
- case R_68K_PC8:
- v -= dot;
- if ((Elf32_Sword)v > 0x7f ||
- (Elf32_Sword)v < -(Elf32_Sword)0x80) {
- ret = obj_reloc_overflow;
- }
- *(char *)loc = v;
- break;
-
- case R_68K_PC16:
- v -= dot;
- if ((Elf32_Sword)v > 0x7fff ||
- (Elf32_Sword)v < -(Elf32_Sword)0x8000) {
- ret = obj_reloc_overflow;
- }
- *(short *)loc = v;
- break;
-
- case R_68K_PC32:
- *(int *)loc = v - dot;
- break;
-
- case R_68K_GLOB_DAT:
- case R_68K_JMP_SLOT:
- *loc = v;
- break;
-
- case R_68K_RELATIVE:
- *(int *)loc += f->baseaddr;
- break;
-
- case R_68K_GOT32:
- goto bb_use_got;
-
- case R_68K_GOTOFF:
- assert(got != 0);
- *loc += v - got;
- break;
-
-#elif defined(__mips__)
-
- case R_MIPS_NONE:
- break;
-
- case R_MIPS_32:
- *loc += v;
- break;
-
- case R_MIPS_26:
- if (v % 4)
- ret = obj_reloc_dangerous;
- if ((v & 0xf0000000) != ((dot + 4) & 0xf0000000))
- ret = obj_reloc_overflow;
- *loc =
- (*loc & ~0x03ffffff) | ((*loc + (v >> 2)) &
- 0x03ffffff);
- break;
-
- case R_MIPS_HI16:
- {
- struct mips_hi16 *n;
-
- /* We cannot relocate this one now because we don't know the value
- of the carry we need to add. Save the information, and let LO16
- do the actual relocation. */
- n = (struct mips_hi16 *) xmalloc(sizeof *n);
- n->addr = loc;
- n->value = v;
- n->next = ifile->mips_hi16_list;
- ifile->mips_hi16_list = n;
- break;
- }
-
- case R_MIPS_LO16:
- {
- unsigned long insnlo = *loc;
- Elf32_Addr val, vallo;
-
- /* Sign extend the addend we extract from the lo insn. */
- vallo = ((insnlo & 0xffff) ^ 0x8000) - 0x8000;
-
- if (ifile->mips_hi16_list != NULL) {
- struct mips_hi16 *l;
-
- l = ifile->mips_hi16_list;
- while (l != NULL) {
- struct mips_hi16 *next;
- unsigned long insn;
-
- /* The value for the HI16 had best be the same. */
- assert(v == l->value);
-
- /* Do the HI16 relocation. Note that we actually don't
- need to know anything about the LO16 itself, except where
- to find the low 16 bits of the addend needed by the LO16. */
- insn = *l->addr;
- val =
- ((insn & 0xffff) << 16) +
- vallo;
- val += v;
-
- /* Account for the sign extension that will happen in the
- low bits. */
- val =
- ((val >> 16) +
- ((val & 0x8000) !=
- 0)) & 0xffff;
-
- insn = (insn & ~0xffff) | val;
- *l->addr = insn;
-
- next = l->next;
- free(l);
- l = next;
- }
-
- ifile->mips_hi16_list = NULL;
- }
-
- /* Ok, we're done with the HI16 relocs. Now deal with the LO16. */
- val = v + vallo;
- insnlo = (insnlo & ~0xffff) | (val & 0xffff);
- *loc = insnlo;
- break;
- }
-
-#elif defined(__powerpc__)
-
- case R_PPC_ADDR16_HA:
- *(unsigned short *)loc = (v + 0x8000) >> 16;
- break;
-
- case R_PPC_ADDR16_HI:
- *(unsigned short *)loc = v >> 16;
- break;
-
- case R_PPC_ADDR16_LO:
- *(unsigned short *)loc = v;
- break;
-
- case R_PPC_REL24:
- goto bb_use_plt;
-
- case R_PPC_REL32:
- *loc = v - dot;
- break;
-
- case R_PPC_ADDR32:
- *loc = v;
- break;
-
-#elif defined(__sh__)
-
- case R_SH_NONE:
- break;
-
- case R_SH_DIR32:
- *loc += v;
- break;
-
- case R_SH_REL32:
- *loc += v - dot;
- break;
-
- case R_SH_PLT32:
- *loc = v - dot;
- break;
-
- case R_SH_GLOB_DAT:
- case R_SH_JMP_SLOT:
- *loc = v;
- break;
-
- case R_SH_RELATIVE:
- *loc = f->baseaddr + rel->r_addend;
- break;
-
- case R_SH_GOTPC:
- assert(got != 0);
- *loc = got - dot + rel->r_addend;
- break;
-
- case R_SH_GOT32:
- goto bb_use_got;
-
- case R_SH_GOTOFF:
- assert(got != 0);
- *loc = v - got;
- break;
-
-#endif
-
- default:
- printf("Warning: unhandled reloc %d\n",(int)ELF32_R_TYPE(rel->r_info));
- ret = obj_reloc_unhandled;
- break;
-
-#if defined(BB_USE_PLT_ENTRIES)
-
- bb_use_plt:
-
- /* find the plt entry and initialize it if necessary */
- assert(isym != NULL);
-
-#if defined(BB_USE_PLT_LIST)
- for (pe = isym->pltent; pe != NULL && pe->addend != rel->r_addend;)
- pe = pe->next;
- assert(pe != NULL);
-#else
- pe = &isym->pltent;
-#endif
-
- if (! pe->inited) {
- ip = (unsigned long *) (ifile->plt->contents + pe->offset);
-
- /* generate some machine code */
-
-#if defined(__arm__)
- ip[0] = 0xe51ff004; /* ldr pc,[pc,#-4] */
- ip[1] = v; /* sym@ */
-#endif
-#if defined(__powerpc__)
- ip[0] = 0x3d600000 + ((v + 0x8000) >> 16); /* lis r11,sym@ha */
- ip[1] = 0x396b0000 + (v & 0xffff); /* addi r11,r11,sym@l */
- ip[2] = 0x7d6903a6; /* mtctr r11 */
- ip[3] = 0x4e800420; /* bctr */
-#endif
- pe->inited = 1;
- }
-
- /* relative distance to target */
- v -= dot;
- /* if the target is too far away.... */
- if ((int)v < -0x02000000 || (int)v >= 0x02000000) {
- /* go via the plt */
- v = plt + pe->offset - dot;
- }
- if (v & 3)
- ret = obj_reloc_dangerous;
-
- /* merge the offset into the instruction. */
-#if defined(__arm__)
- /* Convert to words. */
- v >>= 2;
-
- *loc = (*loc & ~0x00ffffff) | ((v + *loc) & 0x00ffffff);
-#endif
-#if defined(__powerpc__)
- *loc = (*loc & ~0x03fffffc) | (v & 0x03fffffc);
-#endif
- break;
-#endif /* BB_USE_PLT_ENTRIES */
-
-#if defined(BB_USE_GOT_ENTRIES)
- bb_use_got:
-
- assert(isym != NULL);
- /* needs an entry in the .got: set it, once */
- if (!isym->gotent.inited) {
- isym->gotent.inited = 1;
- *(ElfW(Addr) *) (ifile->got->contents + isym->gotent.offset) = v;
- }
- /* make the reloc with_respect_to_.got */
-#if defined(__sh__)
- *loc += isym->gotent.offset + rel->r_addend;
-#elif defined(__i386__) || defined(__arm__) || defined(__mc68000__)
- *loc += isym->gotent.offset;
-#elif defined(__x86_64__)
- /* XXX are these really correct? */
- if (ELF64_R_TYPE(rel->r_info) == R_X86_64_GOTPCREL)
- *(unsigned int *) loc += v + isym->gotent.offset;
- else
- *loc += isym->gotent.offset;
-#endif
- break;
-
-#endif /* BB_USE_GOT_ENTRIES */
- }
-
- return ret;
-}
-
-#if defined(BB_USE_LIST)
-
-static int arch_list_add(ElfW(RelM) *rel, struct arch_list_entry **list,
- int offset, int size)
-{
- struct arch_list_entry *pe;
-
- for (pe = *list; pe != NULL; pe = pe->next) {
- if (pe->addend == rel->r_addend) {
- break;
- }
- }
-
- if (pe == NULL) {
- pe = xmalloc(sizeof(struct arch_list_entry));
- pe->next = *list;
- pe->addend = rel->r_addend;
- pe->offset = offset;
- pe->inited = 0;
- *list = pe;
- return size;
- }
- return 0;
-}
-
-#endif
-
-#if defined(BB_USE_SINGLE)
-
-static int arch_single_init(ElfW(RelM) *rel, struct arch_single_entry *single,
- int offset, int size)
-{
- if (single->allocated == 0) {
- single->allocated = 1;
- single->offset = offset;
- single->inited = 0;
- return size;
- }
- return 0;
-}
-
-#endif
-
-#if defined(BB_USE_GOT_ENTRIES) || defined(BB_USE_PLT_ENTRIES)
-
-static struct obj_section *arch_xsect_init(struct obj_file *f, char *name,
- int offset, int size)
-{
- struct obj_section *myrelsec = obj_find_section(f, name);
-
- if (offset == 0) {
- offset += size;
- }
-
- if (myrelsec) {
- obj_extend_section(myrelsec, offset);
- } else {
- myrelsec = obj_create_alloced_section(f, name,
- size, offset);
- assert(myrelsec);
- }
-
- return myrelsec;
-}
-
-#endif
-
-static void arch_create_got(struct obj_file *f)
-{
-#if defined(BB_USE_GOT_ENTRIES) || defined(BB_USE_PLT_ENTRIES)
- struct arch_file *ifile = (struct arch_file *) f;
- int i;
-#if defined(BB_USE_GOT_ENTRIES)
- int got_offset = 0, got_needed = 0, got_allocate;
-#endif
-#if defined(BB_USE_PLT_ENTRIES)
- int plt_offset = 0, plt_needed = 0, plt_allocate;
-#endif
- struct obj_section *relsec, *symsec, *strsec;
- ElfW(RelM) *rel, *relend;
- ElfW(Sym) *symtab, *extsym;
- const char *strtab, *name;
- struct arch_symbol *intsym;
-
- for (i = 0; i < f->header.e_shnum; ++i) {
- relsec = f->sections[i];
-
- if (relsec->header.sh_type != SHT_RELM)
- continue;
-
- symsec = f->sections[relsec->header.sh_link];
- strsec = f->sections[symsec->header.sh_link];
-
- rel = (ElfW(RelM) *) relsec->contents;
- relend = rel + (relsec->header.sh_size / sizeof(ElfW(RelM)));
- symtab = (ElfW(Sym) *) symsec->contents;
- strtab = (const char *) strsec->contents;
-
- for (; rel < relend; ++rel) {
- extsym = &symtab[ELF32_R_SYM(rel->r_info)];
-
-#if defined(BB_USE_GOT_ENTRIES)
- got_allocate = 0;
-#endif
-#if defined(BB_USE_PLT_ENTRIES)
- plt_allocate = 0;
-#endif
-
- switch (ELF32_R_TYPE(rel->r_info)) {
-
-#if defined(__arm__)
-
- case R_ARM_PC24:
- case R_ARM_PLT32:
- plt_allocate = 1;
- break;
-
- case R_ARM_GOTOFF:
- case R_ARM_GOTPC:
- got_needed = 1;
- continue;
-
- case R_ARM_GOT32:
- got_allocate = 1;
- break;
-
-#elif defined(__i386__)
-
- case R_386_GOTPC:
- case R_386_GOTOFF:
- got_needed = 1;
- continue;
-
- case R_386_GOT32:
- got_allocate = 1;
- break;
-
-#elif defined(__x86_64__)
-
- case R_X86_64_GOTPCREL:
- case R_X86_64_GOT32:
- got_needed = 1;
- continue;
-
-#elif defined(__powerpc__)
-
- case R_PPC_REL24:
- plt_allocate = 1;
- break;
-
-#elif defined(__mc68000__)
-
- case R_68K_GOT32:
- got_allocate = 1;
- break;
-
- case R_68K_GOTOFF:
- got_needed = 1;
- continue;
-
-#elif defined(__sh__)
-
- case R_SH_GOT32:
- got_allocate = 1;
- break;
-
- case R_SH_GOTPC:
- case R_SH_GOTOFF:
- got_needed = 1;
- continue;
-
-#endif
- default:
- continue;
- }
-
- if (extsym->st_name != 0) {
- name = strtab + extsym->st_name;
- } else {
- name = f->sections[extsym->st_shndx]->name;
- }
- intsym = (struct arch_symbol *) obj_find_symbol(f, name);
-#if defined(BB_USE_GOT_ENTRIES)
- if (got_allocate) {
- got_offset += arch_single_init(
- rel, &intsym->gotent,
- got_offset, BB_GOT_ENTRY_SIZE);
-
- got_needed = 1;
- }
-#endif
-#if defined(BB_USE_PLT_ENTRIES)
- if (plt_allocate) {
-#if defined(BB_USE_PLT_LIST)
- plt_offset += arch_list_add(
- rel, &intsym->pltent,
- plt_offset, BB_PLT_ENTRY_SIZE);
-#else
- plt_offset += arch_single_init(
- rel, &intsym->pltent,
- plt_offset, BB_PLT_ENTRY_SIZE);
-#endif
- plt_needed = 1;
- }
-#endif
- }
- }
-
-#if defined(BB_USE_GOT_ENTRIES)
- if (got_needed) {
- ifile->got = arch_xsect_init(f, ".got", got_offset,
- BB_GOT_ENTRY_SIZE);
- }
-#endif
-
-#if defined(BB_USE_PLT_ENTRIES)
- if (plt_needed) {
- ifile->plt = arch_xsect_init(f, ".plt", plt_offset,
- BB_PLT_ENTRY_SIZE);
- }
-#endif
-
-#endif /* defined(BB_USE_GOT_ENTRIES) || defined(BB_USE_PLT_ENTRIES) */
-}
-
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
-static int arch_init_module(struct obj_file *f, struct new_module *mod)
-{
- return 1;
-}
-#endif
-
-
-/*======================================================================*/
-
-/* Standard ELF hash function. */
-static inline unsigned long obj_elf_hash_n(const char *name, unsigned long n)
-{
- unsigned long h = 0;
- unsigned long g;
- unsigned char ch;
-
- while (n > 0) {
- ch = *name++;
- h = (h << 4) + ch;
- if ((g = (h & 0xf0000000)) != 0) {
- h ^= g >> 24;
- h &= ~g;
- }
- n--;
- }
- return h;
-}
-
-static unsigned long obj_elf_hash(const char *name)
-{
- return obj_elf_hash_n(name, strlen(name));
-}
-
-#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
-/* String comparison for non-co-versioned kernel and module. */
-
-static int ncv_strcmp(const char *a, const char *b)
-{
- size_t alen = strlen(a), blen = strlen(b);
-
- if (blen == alen + 10 && b[alen] == '_' && b[alen + 1] == 'R')
- return strncmp(a, b, alen);
- else if (alen == blen + 10 && a[blen] == '_' && a[blen + 1] == 'R')
- return strncmp(a, b, blen);
- else
- return strcmp(a, b);
-}
-
-/* String hashing for non-co-versioned kernel and module. Here
- we are simply forced to drop the crc from the hash. */
-
-static unsigned long ncv_symbol_hash(const char *str)
-{
- size_t len = strlen(str);
- if (len > 10 && str[len - 10] == '_' && str[len - 9] == 'R')
- len -= 10;
- return obj_elf_hash_n(str, len);
-}
-
-static void
-obj_set_symbol_compare(struct obj_file *f,
- int (*cmp) (const char *, const char *),
- unsigned long (*hash) (const char *))
-{
- if (cmp)
- f->symbol_cmp = cmp;
- if (hash) {
- struct obj_symbol *tmptab[HASH_BUCKETS], *sym, *next;
- int i;
-
- f->symbol_hash = hash;
-
- memcpy(tmptab, f->symtab, sizeof(tmptab));
- memset(f->symtab, 0, sizeof(f->symtab));
-
- for (i = 0; i < HASH_BUCKETS; ++i)
- for (sym = tmptab[i]; sym; sym = next) {
- unsigned long h = hash(sym->name) % HASH_BUCKETS;
- next = sym->next;
- sym->next = f->symtab[h];
- f->symtab[h] = sym;
- }
- }
-}
-
-#endif /* BB_FEATURE_INSMOD_VERSION_CHECKING */
-
-static struct obj_symbol *
-obj_add_symbol(struct obj_file *f, const char *name,
- unsigned long symidx, int info,
- int secidx, ElfW(Addr) value,
- unsigned long size)
-{
- struct obj_symbol *sym;
- unsigned long hash = f->symbol_hash(name) % HASH_BUCKETS;
- int n_type = ELFW(ST_TYPE) (info);
- int n_binding = ELFW(ST_BIND) (info);
-
- for (sym = f->symtab[hash]; sym; sym = sym->next)
- if (f->symbol_cmp(sym->name, name) == 0) {
- int o_secidx = sym->secidx;
- int o_info = sym->info;
- int o_type = ELFW(ST_TYPE) (o_info);
- int o_binding = ELFW(ST_BIND) (o_info);
-
- /* A redefinition! Is it legal? */
-
- if (secidx == SHN_UNDEF)
- return sym;
- else if (o_secidx == SHN_UNDEF)
- goto found;
- else if (n_binding == STB_GLOBAL && o_binding == STB_LOCAL) {
- /* Cope with local and global symbols of the same name
- in the same object file, as might have been created
- by ld -r. The only reason locals are now seen at this
- level at all is so that we can do semi-sensible things
- with parameters. */
-
- struct obj_symbol *nsym, **p;
-
- nsym = arch_new_symbol();
- nsym->next = sym->next;
- nsym->ksymidx = -1;
-
- /* Excise the old (local) symbol from the hash chain. */
- for (p = &f->symtab[hash]; *p != sym; p = &(*p)->next)
- continue;
- *p = sym = nsym;
- goto found;
- } else if (n_binding == STB_LOCAL) {
- /* Another symbol of the same name has already been defined.
- Just add this to the local table. */
- sym = arch_new_symbol();
- sym->next = NULL;
- sym->ksymidx = -1;
- f->local_symtab[symidx] = sym;
- goto found;
- } else if (n_binding == STB_WEAK)
- return sym;
- else if (o_binding == STB_WEAK)
- goto found;
- /* Don't unify COMMON symbols with object types the programmer
- doesn't expect. */
- else if (secidx == SHN_COMMON
- && (o_type == STT_NOTYPE || o_type == STT_OBJECT))
- return sym;
- else if (o_secidx == SHN_COMMON
- && (n_type == STT_NOTYPE || n_type == STT_OBJECT))
- goto found;
- else {
- /* Don't report an error if the symbol is coming from
- the kernel or some external module. */
- if (secidx <= SHN_HIRESERVE)
- error_msg("%s multiply defined", name);
- return sym;
- }
- }
-
- /* Completely new symbol. */
- sym = arch_new_symbol();
- sym->next = f->symtab[hash];
- f->symtab[hash] = sym;
- sym->ksymidx = -1;
-
- if (ELFW(ST_BIND)(info) == STB_LOCAL && symidx != -1) {
- if (symidx >= f->local_symtab_size)
- error_msg("local symbol %s with index %ld exceeds local_symtab_size %ld",
- name, (long) symidx, (long) f->local_symtab_size);
- else
- f->local_symtab[symidx] = sym;
- }
-
- found:
- sym->name = name;
- sym->value = value;
- sym->size = size;
- sym->secidx = secidx;
- sym->info = info;
-
- return sym;
-}
-
-static struct obj_symbol *
-obj_find_symbol(struct obj_file *f, const char *name)
-{
- struct obj_symbol *sym;
- unsigned long hash = f->symbol_hash(name) % HASH_BUCKETS;
-
- for (sym = f->symtab[hash]; sym; sym = sym->next)
- if (f->symbol_cmp(sym->name, name) == 0)
- return sym;
-
- return NULL;
-}
-
-static ElfW(Addr)
- obj_symbol_final_value(struct obj_file * f, struct obj_symbol * sym)
-{
- if (sym) {
- if (sym->secidx >= SHN_LORESERVE)
- return sym->value;
-
- return sym->value + f->sections[sym->secidx]->header.sh_addr;
- } else {
- /* As a special case, a NULL sym has value zero. */
- return 0;
- }
-}
-
-static struct obj_section *obj_find_section(struct obj_file *f, const char *name)
-{
- int i, n = f->header.e_shnum;
-
- for (i = 0; i < n; ++i)
- if (strcmp(f->sections[i]->name, name) == 0)
- return f->sections[i];
-
- return NULL;
-}
-
-static int obj_load_order_prio(struct obj_section *a)
-{
- unsigned long af, ac;
-
- af = a->header.sh_flags;
-
- ac = 0;
- if (a->name[0] != '.' || strlen(a->name) != 10 ||
- strcmp(a->name + 5, ".init"))
- ac |= 32;
- if (af & SHF_ALLOC)
- ac |= 16;
- if (!(af & SHF_WRITE))
- ac |= 8;
- if (af & SHF_EXECINSTR)
- ac |= 4;
- if (a->header.sh_type != SHT_NOBITS)
- ac |= 2;
-
- return ac;
-}
-
-static void
-obj_insert_section_load_order(struct obj_file *f, struct obj_section *sec)
-{
- struct obj_section **p;
- int prio = obj_load_order_prio(sec);
- for (p = f->load_order_search_start; *p; p = &(*p)->load_next)
- if (obj_load_order_prio(*p) < prio)
- break;
- sec->load_next = *p;
- *p = sec;
-}
-
-static struct obj_section *obj_create_alloced_section(struct obj_file *f,
- const char *name,
- unsigned long align,
- unsigned long size)
-{
- int newidx = f->header.e_shnum++;
- struct obj_section *sec;
-
- f->sections = xrealloc(f->sections, (newidx + 1) * sizeof(sec));
- f->sections[newidx] = sec = arch_new_section();
-
- memset(sec, 0, sizeof(*sec));
- sec->header.sh_type = SHT_PROGBITS;
- sec->header.sh_flags = SHF_WRITE | SHF_ALLOC;
- sec->header.sh_size = size;
- sec->header.sh_addralign = align;
- sec->name = name;
- sec->idx = newidx;
- if (size)
- sec->contents = xmalloc(size);
-
- obj_insert_section_load_order(f, sec);
-
- return sec;
-}
-
-static struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
- const char *name,
- unsigned long align,
- unsigned long size)
-{
- int newidx = f->header.e_shnum++;
- struct obj_section *sec;
-
- f->sections = xrealloc(f->sections, (newidx + 1) * sizeof(sec));
- f->sections[newidx] = sec = arch_new_section();
-
- memset(sec, 0, sizeof(*sec));
- sec->header.sh_type = SHT_PROGBITS;
- sec->header.sh_flags = SHF_WRITE | SHF_ALLOC;
- sec->header.sh_size = size;
- sec->header.sh_addralign = align;
- sec->name = name;
- sec->idx = newidx;
- if (size)
- sec->contents = xmalloc(size);
-
- sec->load_next = f->load_order;
- f->load_order = sec;
- if (f->load_order_search_start == &f->load_order)
- f->load_order_search_start = &sec->load_next;
-
- return sec;
-}
-
-static void *obj_extend_section(struct obj_section *sec, unsigned long more)
-{
- unsigned long oldsize = sec->header.sh_size;
- if (more) {
- sec->contents = xrealloc(sec->contents, sec->header.sh_size += more);
- }
- return sec->contents + oldsize;
-}
-
-
-/* Conditionally add the symbols from the given symbol set to the
- new module. */
-
-static int
-add_symbols_from(
- struct obj_file *f,
- int idx, struct new_module_symbol *syms, size_t nsyms)
-{
- struct new_module_symbol *s;
- size_t i;
- int used = 0;
-
- for (i = 0, s = syms; i < nsyms; ++i, ++s) {
-
- /* Only add symbols that are already marked external. If we
- override locals we may cause problems for argument initialization.
- We will also create a false dependency on the module. */
- struct obj_symbol *sym;
-
- sym = obj_find_symbol(f, (char *) s->name);
- if (sym && !ELFW(ST_BIND) (sym->info) == STB_LOCAL) {
- sym = obj_add_symbol(f, (char *) s->name, -1,
- ELFW(ST_INFO) (STB_GLOBAL, STT_NOTYPE),
- idx, s->value, 0);
- /* Did our symbol just get installed? If so, mark the
- module as "used". */
- if (sym->secidx == idx)
- used = 1;
- }
- }
-
- return used;
-}
-
-static void add_kernel_symbols(struct obj_file *f)
-{
- struct external_module *m;
- int i, nused = 0;
-
- /* Add module symbols first. */
-
- for (i = 0, m = ext_modules; i < n_ext_modules; ++i, ++m)
- if (m->nsyms
- && add_symbols_from(f, SHN_HIRESERVE + 2 + i, m->syms,
- m->nsyms)) m->used = 1, ++nused;
-
- n_ext_modules_used = nused;
-
- /* And finally the symbols from the kernel proper. */
-
- if (nksyms)
- add_symbols_from(f, SHN_HIRESERVE + 1, ksyms, nksyms);
-}
-
-static char *get_modinfo_value(struct obj_file *f, const char *key)
-{
- struct obj_section *sec;
- char *p, *v, *n, *ep;
- size_t klen = strlen(key);
-
- sec = obj_find_section(f, ".modinfo");
- if (sec == NULL)
- return NULL;
- p = sec->contents;
- ep = p + sec->header.sh_size;
- while (p < ep) {
- v = strchr(p, '=');
- n = strchr(p, '\0');
- if (v) {
- if (p + klen == v && strncmp(p, key, klen) == 0)
- return v + 1;
- } else {
- if (p + klen == n && strcmp(p, key) == 0)
- return n;
- }
- p = n + 1;
- }
-
- return NULL;
-}
-
-
-/*======================================================================*/
-/* Functions relating to module loading in pre 2.1 kernels. */
-
-static int
-old_process_module_arguments(struct obj_file *f, int argc, char **argv)
-{
- while (argc > 0) {
- char *p, *q;
- struct obj_symbol *sym;
- int *loc;
-
- p = *argv;
- if ((q = strchr(p, '=')) == NULL) {
- argc--;
- continue;
- }
- *q++ = '\0';
-
- sym = obj_find_symbol(f, p);
-
- /* Also check that the parameter was not resolved from the kernel. */
- if (sym == NULL || sym->secidx > SHN_HIRESERVE) {
- error_msg("symbol for parameter %s not found", p);
- return 0;
- }
-
- loc = (int *) (f->sections[sym->secidx]->contents + sym->value);
-
- /* Do C quoting if we begin with a ". */
- if (*q == '"') {
- char *r, *str;
-
- str = alloca(strlen(q));
- for (r = str, q++; *q != '"'; ++q, ++r) {
- if (*q == '\0') {
- error_msg("improperly terminated string argument for %s", p);
- return 0;
- } else if (*q == '\\')
- switch (*++q) {
- case 'a':
- *r = '\a';
- break;
- case 'b':
- *r = '\b';
- break;
- case 'e':
- *r = '\033';
- break;
- case 'f':
- *r = '\f';
- break;
- case 'n':
- *r = '\n';
- break;
- case 'r':
- *r = '\r';
- break;
- case 't':
- *r = '\t';
- break;
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- {
- int c = *q - '0';
- if (q[1] >= '0' && q[1] <= '7') {
- c = (c * 8) + *++q - '0';
- if (q[1] >= '0' && q[1] <= '7')
- c = (c * 8) + *++q - '0';
- }
- *r = c;
- }
- break;
-
- default:
- *r = *q;
- break;
- } else
- *r = *q;
- }
- *r = '\0';
- obj_string_patch(f, sym->secidx, sym->value, str);
- } else if (*q >= '0' && *q <= '9') {
- do
- *loc++ = strtoul(q, &q, 0);
- while (*q++ == ',');
- } else {
- char *contents = f->sections[sym->secidx]->contents;
- char *myloc = contents + sym->value;
- char *r; /* To search for commas */
-
- /* Break the string with comas */
- while ((r = strchr(q, ',')) != (char *) NULL) {
- *r++ = '\0';
- obj_string_patch(f, sym->secidx, myloc - contents, q);
- myloc += sizeof(char *);
- q = r;
- }
-
- /* last part */
- obj_string_patch(f, sym->secidx, myloc - contents, q);
- }
-
- argc--, argv++;
- }
-
- return 1;
-}
-
-#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
-static int old_is_module_checksummed(struct obj_file *f)
-{
- return obj_find_symbol(f, "Using_Versions") != NULL;
-}
-/* Get the module's kernel version in the canonical integer form. */
-
-static int
-old_get_module_version(struct obj_file *f, char str[STRVERSIONLEN])
-{
- struct obj_symbol *sym;
- char *p, *q;
- int a, b, c;
-
- sym = obj_find_symbol(f, "kernel_version");
- if (sym == NULL)
- return -1;
-
- p = f->sections[sym->secidx]->contents + sym->value;
- safe_strncpy(str, p, STRVERSIONLEN);
-
- a = strtoul(p, &p, 10);
- if (*p != '.')
- return -1;
- b = strtoul(p + 1, &p, 10);
- if (*p != '.')
- return -1;
- c = strtoul(p + 1, &q, 10);
- if (p + 1 == q)
- return -1;
-
- return a << 16 | b << 8 | c;
-}
-
-#endif /* BB_FEATURE_INSMOD_VERSION_CHECKING */
-
-#ifdef BB_FEATURE_OLD_MODULE_INTERFACE
-
-/* Fetch all the symbols and divvy them up as appropriate for the modules. */
-
-static int old_get_kernel_symbols(const char *m_name)
-{
- struct old_kernel_sym *ks, *k;
- struct new_module_symbol *s;
- struct external_module *mod;
- int nks, nms, nmod, i;
-
- nks = get_kernel_syms(NULL);
- if (nks <= 0) {
- if (nks)
- perror_msg("get_kernel_syms: %s", m_name);
- else
- error_msg("No kernel symbols");
- return 0;
- }
-
- ks = k = xmalloc(nks * sizeof(*ks));
-
- if (get_kernel_syms(ks) != nks) {
- perror("inconsistency with get_kernel_syms -- is someone else "
- "playing with modules?");
- free(ks);
- return 0;
- }
-
- /* Collect the module information. */
-
- mod = NULL;
- nmod = -1;
-
- while (k->name[0] == '#' && k->name[1]) {
- struct old_kernel_sym *k2;
-
- /* Find out how many symbols this module has. */
- for (k2 = k + 1; k2->name[0] != '#'; ++k2)
- continue;
- nms = k2 - k - 1;
-
- mod = xrealloc(mod, (++nmod + 1) * sizeof(*mod));
- mod[nmod].name = k->name + 1;
- mod[nmod].addr = k->value;
- mod[nmod].used = 0;
- mod[nmod].nsyms = nms;
- mod[nmod].syms = s = (nms ? xmalloc(nms * sizeof(*s)) : NULL);
-
- for (i = 0, ++k; i < nms; ++i, ++s, ++k) {
- s->name = (unsigned long) k->name;
- s->value = k->value;
- }
-
- k = k2;
- }
-
- ext_modules = mod;
- n_ext_modules = nmod + 1;
-
- /* Now collect the symbols for the kernel proper. */
-
- if (k->name[0] == '#')
- ++k;
-
- nksyms = nms = nks - (k - ks);
- ksyms = s = (nms ? xmalloc(nms * sizeof(*s)) : NULL);
-
- for (i = 0; i < nms; ++i, ++s, ++k) {
- s->name = (unsigned long) k->name;
- s->value = k->value;
- }
-
- return 1;
-}
-
-/* Return the kernel symbol checksum version, or zero if not used. */
-
-static int old_is_kernel_checksummed(void)
-{
- /* Using_Versions is the first symbol. */
- if (nksyms > 0
- && strcmp((char *) ksyms[0].name,
- "Using_Versions") == 0) return ksyms[0].value;
- else
- return 0;
-}
-
-
-static int old_create_mod_use_count(struct obj_file *f)
-{
- struct obj_section *sec;
-
- sec = obj_create_alloced_section_first(f, ".moduse", sizeof(long),
- sizeof(long));
-
- obj_add_symbol(f, "mod_use_count_", -1,
- ELFW(ST_INFO) (STB_LOCAL, STT_OBJECT), sec->idx, 0,
- sizeof(long));
-
- return 1;
-}
-
-static int
-old_init_module(const char *m_name, struct obj_file *f,
- unsigned long m_size)
-{
- char *image;
- struct old_mod_routines routines;
- struct old_symbol_table *symtab;
- int ret;
-
- /* Create the symbol table */
- {
- int nsyms = 0, strsize = 0, total;
-
- /* Size things first... */
- if (flag_export) {
- int i;
- for (i = 0; i < HASH_BUCKETS; ++i) {
- struct obj_symbol *sym;
- for (sym = f->symtab[i]; sym; sym = sym->next)
- if (ELFW(ST_BIND) (sym->info) != STB_LOCAL
- && sym->secidx <= SHN_HIRESERVE)
- {
- sym->ksymidx = nsyms++;
- strsize += strlen(sym->name) + 1;
- }
- }
- }
-
- total = (sizeof(struct old_symbol_table)
- + nsyms * sizeof(struct old_module_symbol)
- + n_ext_modules_used * sizeof(struct old_module_ref)
- + strsize);
- symtab = xmalloc(total);
- symtab->size = total;
- symtab->n_symbols = nsyms;
- symtab->n_refs = n_ext_modules_used;
-
- if (flag_export && nsyms) {
- struct old_module_symbol *ksym;
- char *str;
- int i;
-
- ksym = symtab->symbol;
- str = ((char *) ksym + nsyms * sizeof(struct old_module_symbol)
- + n_ext_modules_used * sizeof(struct old_module_ref));
-
- for (i = 0; i < HASH_BUCKETS; ++i) {
- struct obj_symbol *sym;
- for (sym = f->symtab[i]; sym; sym = sym->next)
- if (sym->ksymidx >= 0) {
- ksym->addr = obj_symbol_final_value(f, sym);
- ksym->name =
- (unsigned long) str - (unsigned long) symtab;
-
- strcpy(str, sym->name);
- str += strlen(sym->name) + 1;
- ksym++;
- }
- }
- }
-
- if (n_ext_modules_used) {
- struct old_module_ref *ref;
- int i;
-
- ref = (struct old_module_ref *)
- ((char *) symtab->symbol + nsyms * sizeof(struct old_module_symbol));
-
- for (i = 0; i < n_ext_modules; ++i)
- if (ext_modules[i].used)
- ref++->module = ext_modules[i].addr;
- }
- }
-
- /* Fill in routines. */
-
- routines.init =
- obj_symbol_final_value(f, obj_find_symbol(f, "init_module"));
- routines.cleanup =
- obj_symbol_final_value(f, obj_find_symbol(f, "cleanup_module"));
-
- /* Whew! All of the initialization is complete. Collect the final
- module image and give it to the kernel. */
-
- image = xmalloc(m_size);
- obj_create_image(f, image);
-
- /* image holds the complete relocated module, accounting correctly for
- mod_use_count. However the old module kernel support assume that
- it is receiving something which does not contain mod_use_count. */
- ret = old_sys_init_module(m_name, image + sizeof(long),
- m_size | (flag_autoclean ? OLD_MOD_AUTOCLEAN
- : 0), &routines, symtab);
- if (ret)
- perror_msg("init_module: %s", m_name);
-
- free(image);
- free(symtab);
-
- return ret == 0;
-}
-
-#else
-
-#define old_create_mod_use_count(x) TRUE
-#define old_init_module(x, y, z) TRUE
-
-#endif /* BB_FEATURE_OLD_MODULE_INTERFACE */
-
-
-
-/*======================================================================*/
-/* Functions relating to module loading after 2.1.18. */
-
-static int
-new_process_module_arguments(struct obj_file *f, int argc, char **argv)
-{
- while (argc > 0) {
- char *p, *q, *key;
- struct obj_symbol *sym;
- char *contents, *loc;
- int min, max, n;
-
- p = *argv;
- if ((q = strchr(p, '=')) == NULL) {
- argc--;
- continue;
- }
-
- key = alloca(q - p + 6);
- memcpy(key, "parm_", 5);
- memcpy(key + 5, p, q - p);
- key[q - p + 5] = 0;
-
- p = get_modinfo_value(f, key);
- key += 5;
- if (p == NULL) {
- error_msg("invalid parameter %s", key);
- return 0;
- }
-
- sym = obj_find_symbol(f, key);
-
- /* Also check that the parameter was not resolved from the kernel. */
- if (sym == NULL || sym->secidx > SHN_HIRESERVE) {
- error_msg("symbol for parameter %s not found", key);
- return 0;
- }
-
- if (isdigit(*p)) {
- min = strtoul(p, &p, 10);
- if (*p == '-')
- max = strtoul(p + 1, &p, 10);
- else
- max = min;
- } else
- min = max = 1;
-
- contents = f->sections[sym->secidx]->contents;
- loc = contents + sym->value;
- n = (*++q != '\0');
-
- while (1) {
- if ((*p == 's') || (*p == 'c')) {
- char *str;
-
- /* Do C quoting if we begin with a ", else slurp the lot. */
- if (*q == '"') {
- char *r;
-
- str = alloca(strlen(q));
- for (r = str, q++; *q != '"'; ++q, ++r) {
- if (*q == '\0') {
- error_msg("improperly terminated string argument for %s",
- key);
- return 0;
- } else if (*q == '\\')
- switch (*++q) {
- case 'a':
- *r = '\a';
- break;
- case 'b':
- *r = '\b';
- break;
- case 'e':
- *r = '\033';
- break;
- case 'f':
- *r = '\f';
- break;
- case 'n':
- *r = '\n';
- break;
- case 'r':
- *r = '\r';
- break;
- case 't':
- *r = '\t';
- break;
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- {
- int c = *q - '0';
- if (q[1] >= '0' && q[1] <= '7') {
- c = (c * 8) + *++q - '0';
- if (q[1] >= '0' && q[1] <= '7')
- c = (c * 8) + *++q - '0';
- }
- *r = c;
- }
- break;
-
- default:
- *r = *q;
- break;
- } else
- *r = *q;
- }
- *r = '\0';
- ++q;
- } else {
- char *r;
-
- /* In this case, the string is not quoted. We will break
- it using the coma (like for ints). If the user wants to
- include comas in a string, he just has to quote it */
-
- /* Search the next coma */
- r = strchr(q, ',');
-
- /* Found ? */
- if (r != (char *) NULL) {
- /* Recopy the current field */
- str = alloca(r - q + 1);
- memcpy(str, q, r - q);
-
- /* I don't know if it is usefull, as the previous case
- doesn't null terminate the string ??? */
- str[r - q] = '\0';
-
- /* Keep next fields */
- q = r;
- } else {
- /* last string */
- str = q;
- q = "";
- }
- }
-
- if (*p == 's') {
- /* Normal string */
- obj_string_patch(f, sym->secidx, loc - contents, str);
- loc += tgt_sizeof_char_p;
- } else {
- /* Array of chars (in fact, matrix !) */
- unsigned long charssize; /* size of each member */
-
- /* Get the size of each member */
- /* Probably we should do that outside the loop ? */
- if (!isdigit(*(p + 1))) {
- error_msg("parameter type 'c' for %s must be followed by"
- " the maximum size", key);
- return 0;
- }
- charssize = strtoul(p + 1, (char **) NULL, 10);
-
- /* Check length */
- if (strlen(str) >= charssize) {
- error_msg("string too long for %s (max %ld)", key,
- charssize - 1);
- return 0;
- }
-
- /* Copy to location */
- strcpy((char *) loc, str);
- loc += charssize;
- }
- } else {
- long v = strtoul(q, &q, 0);
- switch (*p) {
- case 'b':
- *loc++ = v;
- break;
- case 'h':
- *(short *) loc = v;
- loc += tgt_sizeof_short;
- break;
- case 'i':
- *(int *) loc = v;
- loc += tgt_sizeof_int;
- break;
- case 'l':
- *(long *) loc = v;
- loc += tgt_sizeof_long;
- break;
-
- default:
- error_msg("unknown parameter type '%c' for %s", *p, key);
- return 0;
- }
- }
-
- retry_end_of_value:
- switch (*q) {
- case '\0':
- goto end_of_arg;
-
- case ' ':
- case '\t':
- case '\n':
- case '\r':
- ++q;
- goto retry_end_of_value;
-
- case ',':
- if (++n > max) {
- error_msg("too many values for %s (max %d)", key, max);
- return 0;
- }
- ++q;
- break;
-
- default:
- error_msg("invalid argument syntax for %s", key);
- return 0;
- }
- }
-
- end_of_arg:
- if (n < min) {
- error_msg("too few values for %s (min %d)", key, min);
- return 0;
- }
-
- argc--, argv++;
- }
-
- return 1;
-}
-
-#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
-static int new_is_module_checksummed(struct obj_file *f)
-{
- const char *p = get_modinfo_value(f, "using_checksums");
- if (p)
- return atoi(p);
- else
- return 0;
-}
-
-/* Get the module's kernel version in the canonical integer form. */
-
-static int
-new_get_module_version(struct obj_file *f, char str[STRVERSIONLEN])
-{
- char *p, *q;
- int a, b, c;
-
- p = get_modinfo_value(f, "kernel_version");
- if (p == NULL)
- return -1;
- safe_strncpy(str, p, STRVERSIONLEN);
-
- a = strtoul(p, &p, 10);
- if (*p != '.')
- return -1;
- b = strtoul(p + 1, &p, 10);
- if (*p != '.')
- return -1;
- c = strtoul(p + 1, &q, 10);
- if (p + 1 == q)
- return -1;
-
- return a << 16 | b << 8 | c;
-}
-
-#endif /* BB_FEATURE_INSMOD_VERSION_CHECKING */
-
-
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
-
-/* Fetch the loaded modules, and all currently exported symbols. */
-
-static int new_get_kernel_symbols(void)
-{
- char *module_names, *mn;
- struct external_module *modules, *m;
- struct new_module_symbol *syms, *s;
- size_t ret, bufsize, nmod, nsyms, i, j;
-
- /* Collect the loaded modules. */
-
- module_names = xmalloc(bufsize = 256);
- retry_modules_load:
- if (query_module(NULL, QM_MODULES, module_names, bufsize, &ret)) {
- if (errno == ENOSPC && bufsize < ret) {
- module_names = xrealloc(module_names, bufsize = ret);
- goto retry_modules_load;
- }
- perror_msg("QM_MODULES");
- return 0;
- }
-
- n_ext_modules = nmod = ret;
-
- /* Collect the modules' symbols. */
-
- if (nmod){
- ext_modules = modules = xmalloc(nmod * sizeof(*modules));
- memset(modules, 0, nmod * sizeof(*modules));
- for (i = 0, mn = module_names, m = modules;
- i < nmod; ++i, ++m, mn += strlen(mn) + 1) {
- struct new_module_info info;
-
- if (query_module(mn, QM_INFO, &info, sizeof(info), &ret)) {
- if (errno == ENOENT) {
- /* The module was removed out from underneath us. */
- continue;
- }
- perror_msg("query_module: QM_INFO: %s", mn);
- return 0;
- }
-
- syms = xmalloc(bufsize = 1024);
- retry_mod_sym_load:
- if (query_module(mn, QM_SYMBOLS, syms, bufsize, &ret)) {
- switch (errno) {
- case ENOSPC:
- syms = xrealloc(syms, bufsize = ret);
- goto retry_mod_sym_load;
- case ENOENT:
- /* The module was removed out from underneath us. */
- continue;
- default:
- perror_msg("query_module: QM_SYMBOLS: %s", mn);
- return 0;
- }
- }
- nsyms = ret;
-
- m->name = mn;
- m->addr = info.addr;
- m->nsyms = nsyms;
- m->syms = syms;
-
- for (j = 0, s = syms; j < nsyms; ++j, ++s) {
- s->name += (unsigned long) syms;
- }
- }
- }
-
- /* Collect the kernel's symbols. */
-
- syms = xmalloc(bufsize = 16 * 1024);
- retry_kern_sym_load:
- if (query_module(NULL, QM_SYMBOLS, syms, bufsize, &ret)) {
- if (errno == ENOSPC && bufsize < ret) {
- syms = xrealloc(syms, bufsize = ret);
- goto retry_kern_sym_load;
- }
- perror_msg("kernel: QM_SYMBOLS");
- return 0;
- }
- nksyms = nsyms = ret;
- ksyms = syms;
-
- for (j = 0, s = syms; j < nsyms; ++j, ++s) {
- s->name += (unsigned long) syms;
- }
- return 1;
-}
-
-
-/* Return the kernel symbol checksum version, or zero if not used. */
-
-static int new_is_kernel_checksummed(void)
-{
- struct new_module_symbol *s;
- size_t i;
-
- /* Using_Versions is not the first symbol, but it should be in there. */
-
- for (i = 0, s = ksyms; i < nksyms; ++i, ++s)
- if (strcmp((char *) s->name, "Using_Versions") == 0)
- return s->value;
-
- return 0;
-}
-
-
-static int new_create_this_module(struct obj_file *f, const char *m_name)
-{
- struct obj_section *sec;
-
- sec = obj_create_alloced_section_first(f, ".this", tgt_sizeof_long,
- sizeof(struct new_module));
- memset(sec->contents, 0, sizeof(struct new_module));
-
- obj_add_symbol(f, "__this_module", -1,
- ELFW(ST_INFO) (STB_LOCAL, STT_OBJECT), sec->idx, 0,
- sizeof(struct new_module));
-
- obj_string_patch(f, sec->idx, offsetof(struct new_module, name),
- m_name);
-
- return 1;
-}
-
-
-static int new_create_module_ksymtab(struct obj_file *f)
-{
- struct obj_section *sec;
- int i;
-
- /* We must always add the module references. */
-
- if (n_ext_modules_used) {
- struct new_module_ref *dep;
- struct obj_symbol *tm;
-
- sec = obj_create_alloced_section(f, ".kmodtab", tgt_sizeof_void_p,
- (sizeof(struct new_module_ref)
- * n_ext_modules_used));
- if (!sec)
- return 0;
-
- tm = obj_find_symbol(f, "__this_module");
- dep = (struct new_module_ref *) sec->contents;
- for (i = 0; i < n_ext_modules; ++i)
- if (ext_modules[i].used) {
- dep->dep = ext_modules[i].addr;
- obj_symbol_patch(f, sec->idx,
- (char *) &dep->ref - sec->contents, tm);
- dep->next_ref = 0;
- ++dep;
- }
- }
-
- if (flag_export && !obj_find_section(f, "__ksymtab")) {
- size_t nsyms;
- int *loaded;
-
- sec =
- obj_create_alloced_section(f, "__ksymtab", tgt_sizeof_void_p,
- 0);
-
- /* We don't want to export symbols residing in sections that
- aren't loaded. There are a number of these created so that
- we make sure certain module options don't appear twice. */
-
- loaded = alloca(sizeof(int) * (i = f->header.e_shnum));
- while (--i >= 0)
- loaded[i] = (f->sections[i]->header.sh_flags & SHF_ALLOC) != 0;
-
- for (nsyms = i = 0; i < HASH_BUCKETS; ++i) {
- struct obj_symbol *sym;
- for (sym = f->symtab[i]; sym; sym = sym->next)
- if (ELFW(ST_BIND) (sym->info) != STB_LOCAL
- && sym->secidx <= SHN_HIRESERVE
- && (sym->secidx >= SHN_LORESERVE
- || loaded[sym->secidx])) {
- ElfW(Addr) ofs = nsyms * 2 * tgt_sizeof_void_p;
-
- obj_symbol_patch(f, sec->idx, ofs, sym);
- obj_string_patch(f, sec->idx, ofs + tgt_sizeof_void_p,
- sym->name);
-
- nsyms++;
- }
- }
-
- obj_extend_section(sec, nsyms * 2 * tgt_sizeof_char_p);
- }
-
- return 1;
-}
-
-
-static int
-new_init_module(const char *m_name, struct obj_file *f,
- unsigned long m_size)
-{
- struct new_module *module;
- struct obj_section *sec;
- void *image;
- int ret;
- tgt_long m_addr;
-
- sec = obj_find_section(f, ".this");
- if (!sec || !sec->contents) {
- perror_msg("corrupt module %s?",m_name);
- exit(EXIT_FAILURE);
- }
- module = (struct new_module *) sec->contents;
- m_addr = sec->header.sh_addr;
-
- module->size_of_struct = sizeof(*module);
- module->size = m_size;
- module->flags = flag_autoclean ? NEW_MOD_AUTOCLEAN : 0;
-
- sec = obj_find_section(f, "__ksymtab");
- if (sec && sec->header.sh_size) {
- module->syms = sec->header.sh_addr;
- module->nsyms = sec->header.sh_size / (2 * tgt_sizeof_char_p);
- }
-
- if (n_ext_modules_used) {
- sec = obj_find_section(f, ".kmodtab");
- module->deps = sec->header.sh_addr;
- module->ndeps = n_ext_modules_used;
- }
-
- module->init =
- obj_symbol_final_value(f, obj_find_symbol(f, "init_module"));
- module->cleanup =
- obj_symbol_final_value(f, obj_find_symbol(f, "cleanup_module"));
-
- sec = obj_find_section(f, "__ex_table");
- if (sec) {
- module->ex_table_start = sec->header.sh_addr;
- module->ex_table_end = sec->header.sh_addr + sec->header.sh_size;
- }
-
- sec = obj_find_section(f, ".text.init");
- if (sec) {
- module->runsize = sec->header.sh_addr - m_addr;
- }
- sec = obj_find_section(f, ".data.init");
- if (sec) {
- if (!module->runsize ||
- module->runsize > sec->header.sh_addr - m_addr)
- module->runsize = sec->header.sh_addr - m_addr;
- }
- sec = obj_find_section(f, ARCHDATA_SEC_NAME);
- if (sec && sec->header.sh_size) {
- module->archdata_start = (void*)sec->header.sh_addr;
- module->archdata_end = module->archdata_start + sec->header.sh_size;
- }
- sec = obj_find_section(f, KALLSYMS_SEC_NAME);
- if (sec && sec->header.sh_size) {
- module->kallsyms_start = (void*)sec->header.sh_addr;
- module->kallsyms_end = module->kallsyms_start + sec->header.sh_size;
- }
-
- if (!arch_init_module(f, module))
- return 0;
-
- /* Whew! All of the initialization is complete. Collect the final
- module image and give it to the kernel. */
-
- image = xmalloc(m_size);
- obj_create_image(f, image);
-
- ret = new_sys_init_module(m_name, (struct new_module *) image);
- if (ret)
- perror_msg("init_module: %s", m_name);
-
- free(image);
-
- return ret == 0;
-}
-
-#else
-
-#define new_init_module(x, y, z) TRUE
-#define new_create_this_module(x, y) 0
-#define new_create_module_ksymtab(x)
-#define query_module(v, w, x, y, z) -1
-
-#endif /* BB_FEATURE_NEW_MODULE_INTERFACE */
-
-
-/*======================================================================*/
-
-static int
-obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
- const char *string)
-{
- struct obj_string_patch *p;
- struct obj_section *strsec;
- size_t len = strlen(string) + 1;
- char *loc;
-
- p = xmalloc(sizeof(*p));
- p->next = f->string_patches;
- p->reloc_secidx = secidx;
- p->reloc_offset = offset;
- f->string_patches = p;
-
- strsec = obj_find_section(f, ".kstrtab");
- if (strsec == NULL) {
- strsec = obj_create_alloced_section(f, ".kstrtab", 1, len);
- p->string_offset = 0;
- loc = strsec->contents;
- } else {
- p->string_offset = strsec->header.sh_size;
- loc = obj_extend_section(strsec, len);
- }
- memcpy(loc, string, len);
-
- return 1;
-}
-
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
-static int
-obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
- struct obj_symbol *sym)
-{
- struct obj_symbol_patch *p;
-
- p = xmalloc(sizeof(*p));
- p->next = f->symbol_patches;
- p->reloc_secidx = secidx;
- p->reloc_offset = offset;
- p->sym = sym;
- f->symbol_patches = p;
-
- return 1;
-}
-#endif
-
-static int obj_check_undefineds(struct obj_file *f)
-{
- unsigned long i;
- int ret = 1;
-
- for (i = 0; i < HASH_BUCKETS; ++i) {
- struct obj_symbol *sym;
- for (sym = f->symtab[i]; sym; sym = sym->next)
- if (sym->secidx == SHN_UNDEF) {
- if (ELFW(ST_BIND) (sym->info) == STB_WEAK) {
- sym->secidx = SHN_ABS;
- sym->value = 0;
- } else {
- if (!flag_quiet) {
- error_msg("unresolved symbol %s", sym->name);
- }
- ret = 0;
- }
- }
- }
-
- return ret;
-}
-
-static void obj_allocate_commons(struct obj_file *f)
-{
- struct common_entry {
- struct common_entry *next;
- struct obj_symbol *sym;
- } *common_head = NULL;
-
- unsigned long i;
-
- for (i = 0; i < HASH_BUCKETS; ++i) {
- struct obj_symbol *sym;
- for (sym = f->symtab[i]; sym; sym = sym->next)
- if (sym->secidx == SHN_COMMON) {
- /* Collect all COMMON symbols and sort them by size so as to
- minimize space wasted by alignment requirements. */
- {
- struct common_entry **p, *n;
- for (p = &common_head; *p; p = &(*p)->next)
- if (sym->size <= (*p)->sym->size)
- break;
-
- n = alloca(sizeof(*n));
- n->next = *p;
- n->sym = sym;
- *p = n;
- }
- }
- }
-
- for (i = 1; i < f->local_symtab_size; ++i) {
- struct obj_symbol *sym = f->local_symtab[i];
- if (sym && sym->secidx == SHN_COMMON) {
- struct common_entry **p, *n;
- for (p = &common_head; *p; p = &(*p)->next)
- if (sym == (*p)->sym)
- break;
- else if (sym->size < (*p)->sym->size) {
- n = alloca(sizeof(*n));
- n->next = *p;
- n->sym = sym;
- *p = n;
- break;
- }
- }
- }
-
- if (common_head) {
- /* Find the bss section. */
- for (i = 0; i < f->header.e_shnum; ++i)
- if (f->sections[i]->header.sh_type == SHT_NOBITS)
- break;
-
- /* If for some reason there hadn't been one, create one. */
- if (i == f->header.e_shnum) {
- struct obj_section *sec;
-
- f->sections = xrealloc(f->sections, (i + 1) * sizeof(sec));
- f->sections[i] = sec = arch_new_section();
- f->header.e_shnum = i + 1;
-
- memset(sec, 0, sizeof(*sec));
- sec->header.sh_type = SHT_PROGBITS;
- sec->header.sh_flags = SHF_WRITE | SHF_ALLOC;
- sec->name = ".bss";
- sec->idx = i;
- }
-
- /* Allocate the COMMONS. */
- {
- ElfW(Addr) bss_size = f->sections[i]->header.sh_size;
- ElfW(Addr) max_align = f->sections[i]->header.sh_addralign;
- struct common_entry *c;
-
- for (c = common_head; c; c = c->next) {
- ElfW(Addr) align = c->sym->value;
-
- if (align > max_align)
- max_align = align;
- if (bss_size & (align - 1))
- bss_size = (bss_size | (align - 1)) + 1;
-
- c->sym->secidx = i;
- c->sym->value = bss_size;
-
- bss_size += c->sym->size;
- }
-
- f->sections[i]->header.sh_size = bss_size;
- f->sections[i]->header.sh_addralign = max_align;
- }
- }
-
- /* For the sake of patch relocation and parameter initialization,
- allocate zeroed data for NOBITS sections now. Note that after
- this we cannot assume NOBITS are really empty. */
- for (i = 0; i < f->header.e_shnum; ++i) {
- struct obj_section *s = f->sections[i];
- if (s->header.sh_type == SHT_NOBITS) {
- if (s->header.sh_size != 0)
- s->contents = memset(xmalloc(s->header.sh_size),
- 0, s->header.sh_size);
- else
- s->contents = NULL;
-
- s->header.sh_type = SHT_PROGBITS;
- }
- }
-}
-
-static unsigned long obj_load_size(struct obj_file *f)
-{
- unsigned long dot = 0;
- struct obj_section *sec;
-
- /* Finalize the positions of the sections relative to one another. */
-
- for (sec = f->load_order; sec; sec = sec->load_next) {
- ElfW(Addr) align;
-
- align = sec->header.sh_addralign;
- if (align && (dot & (align - 1)))
- dot = (dot | (align - 1)) + 1;
-
- sec->header.sh_addr = dot;
- dot += sec->header.sh_size;
- }
-
- return dot;
-}
-
-static int obj_relocate(struct obj_file *f, ElfW(Addr) base)
-{
- int i, n = f->header.e_shnum;
- int ret = 1;
-
- /* Finalize the addresses of the sections. */
-
- f->baseaddr = base;
- for (i = 0; i < n; ++i)
- f->sections[i]->header.sh_addr += base;
-
- /* And iterate over all of the relocations. */
-
- for (i = 0; i < n; ++i) {
- struct obj_section *relsec, *symsec, *targsec, *strsec;
- ElfW(RelM) * rel, *relend;
- ElfW(Sym) * symtab;
- const char *strtab;
-
- relsec = f->sections[i];
- if (relsec->header.sh_type != SHT_RELM)
- continue;
-
- symsec = f->sections[relsec->header.sh_link];
- targsec = f->sections[relsec->header.sh_info];
- strsec = f->sections[symsec->header.sh_link];
-
- rel = (ElfW(RelM) *) relsec->contents;
- relend = rel + (relsec->header.sh_size / sizeof(ElfW(RelM)));
- symtab = (ElfW(Sym) *) symsec->contents;
- strtab = (const char *) strsec->contents;
-
- for (; rel < relend; ++rel) {
- ElfW(Addr) value = 0;
- struct obj_symbol *intsym = NULL;
- unsigned long symndx;
- ElfW(Sym) * extsym = 0;
- const char *errmsg;
-
- /* Attempt to find a value to use for this relocation. */
-
- symndx = ELFW(R_SYM) (rel->r_info);
- if (symndx) {
- /* Note we've already checked for undefined symbols. */
-
- extsym = &symtab[symndx];
- if (ELFW(ST_BIND) (extsym->st_info) == STB_LOCAL) {
- /* Local symbols we look up in the local table to be sure
- we get the one that is really intended. */
- intsym = f->local_symtab[symndx];
- } else {
- /* Others we look up in the hash table. */
- const char *name;
- if (extsym->st_name)
- name = strtab + extsym->st_name;
- else
- name = f->sections[extsym->st_shndx]->name;
- intsym = obj_find_symbol(f, name);
- }
-
- value = obj_symbol_final_value(f, intsym);
- intsym->referenced = 1;
- }
-#if SHT_RELM == SHT_RELA
-#if defined(__alpha__) && defined(AXP_BROKEN_GAS)
- /* Work around a nasty GAS bug, that is fixed as of 2.7.0.9. */
- if (!extsym || !extsym->st_name ||
- ELFW(ST_BIND) (extsym->st_info) != STB_LOCAL)
-#endif
- value += rel->r_addend;
-#endif
-
- /* Do it! */
- switch (arch_apply_relocation
- (f, targsec, symsec, intsym, rel, value)) {
- case obj_reloc_ok:
- break;
-
- case obj_reloc_overflow:
- errmsg = "Relocation overflow";
- goto bad_reloc;
- case obj_reloc_dangerous:
- errmsg = "Dangerous relocation";
- goto bad_reloc;
- case obj_reloc_unhandled:
- errmsg = "Unhandled relocation";
- bad_reloc:
- if (extsym) {
- error_msg("%s of type %ld for %s", errmsg,
- (long) ELFW(R_TYPE) (rel->r_info),
- strtab + extsym->st_name);
- } else {
- error_msg("%s of type %ld", errmsg,
- (long) ELFW(R_TYPE) (rel->r_info));
- }
- ret = 0;
- break;
- }
- }
- }
-
- /* Finally, take care of the patches. */
-
- if (f->string_patches) {
- struct obj_string_patch *p;
- struct obj_section *strsec;
- ElfW(Addr) strsec_base;
- strsec = obj_find_section(f, ".kstrtab");
- strsec_base = strsec->header.sh_addr;
-
- for (p = f->string_patches; p; p = p->next) {
- struct obj_section *targsec = f->sections[p->reloc_secidx];
- *(ElfW(Addr) *) (targsec->contents + p->reloc_offset)
- = strsec_base + p->string_offset;
- }
- }
-
- if (f->symbol_patches) {
- struct obj_symbol_patch *p;
-
- for (p = f->symbol_patches; p; p = p->next) {
- struct obj_section *targsec = f->sections[p->reloc_secidx];
- *(ElfW(Addr) *) (targsec->contents + p->reloc_offset)
- = obj_symbol_final_value(f, p->sym);
- }
- }
-
- return ret;
-}
-
-static int obj_create_image(struct obj_file *f, char *image)
-{
- struct obj_section *sec;
- ElfW(Addr) base = f->baseaddr;
-
- for (sec = f->load_order; sec; sec = sec->load_next) {
- char *secimg;
-
- if (sec->contents == 0 || sec->header.sh_size == 0)
- continue;
-
- secimg = image + (sec->header.sh_addr - base);
-
- /* Note that we allocated data for NOBITS sections earlier. */
- memcpy(secimg, sec->contents, sec->header.sh_size);
- }
-
- return 1;
-}
-
-/*======================================================================*/
-
-static struct obj_file *obj_load(FILE * fp, int loadprogbits)
-{
- struct obj_file *f;
- ElfW(Shdr) * section_headers;
- int shnum, i;
- char *shstrtab;
-
- /* Read the file header. */
-
- f = arch_new_file();
- memset(f, 0, sizeof(*f));
- f->symbol_cmp = strcmp;
- f->symbol_hash = obj_elf_hash;
- f->load_order_search_start = &f->load_order;
-
- fseek(fp, 0, SEEK_SET);
- if (fread(&f->header, sizeof(f->header), 1, fp) != 1) {
- perror_msg("error reading ELF header");
- return NULL;
- }
-
- if (f->header.e_ident[EI_MAG0] != ELFMAG0
- || f->header.e_ident[EI_MAG1] != ELFMAG1
- || f->header.e_ident[EI_MAG2] != ELFMAG2
- || f->header.e_ident[EI_MAG3] != ELFMAG3) {
- error_msg("not an ELF file");
- return NULL;
- }
- if (f->header.e_ident[EI_CLASS] != ELFCLASSM
- || f->header.e_ident[EI_DATA] != ELFDATAM
- || f->header.e_ident[EI_VERSION] != EV_CURRENT
- || !MATCH_MACHINE(f->header.e_machine)) {
- error_msg("ELF file not for this architecture");
- return NULL;
- }
- if (f->header.e_type != ET_REL) {
- error_msg("ELF file not a relocatable object");
- return NULL;
- }
-
- /* Read the section headers. */
-
- if (f->header.e_shentsize != sizeof(ElfW(Shdr))) {
- error_msg("section header size mismatch: %lu != %lu",
- (unsigned long) f->header.e_shentsize,
- (unsigned long) sizeof(ElfW(Shdr)));
- return NULL;
- }
-
- shnum = f->header.e_shnum;
- f->sections = xmalloc(sizeof(struct obj_section *) * shnum);
- memset(f->sections, 0, sizeof(struct obj_section *) * shnum);
-
- section_headers = alloca(sizeof(ElfW(Shdr)) * shnum);
- fseek(fp, f->header.e_shoff, SEEK_SET);
- if (fread(section_headers, sizeof(ElfW(Shdr)), shnum, fp) != shnum) {
- perror_msg("error reading ELF section headers");
- return NULL;
- }
-
- /* Read the section data. */
-
- for (i = 0; i < shnum; ++i) {
- struct obj_section *sec;
-
- f->sections[i] = sec = arch_new_section();
- memset(sec, 0, sizeof(*sec));
-
- sec->header = section_headers[i];
- sec->idx = i;
-
- if(sec->header.sh_size) switch (sec->header.sh_type) {
- case SHT_NULL:
- case SHT_NOTE:
- case SHT_NOBITS:
- /* ignore */
- break;
-
- case SHT_PROGBITS:
-#if LOADBITS
- if (!loadprogbits) {
- sec->contents = NULL;
- break;
- }
-#endif
- case SHT_SYMTAB:
- case SHT_STRTAB:
- case SHT_RELM:
- if (sec->header.sh_size > 0) {
- sec->contents = xmalloc(sec->header.sh_size);
- fseek(fp, sec->header.sh_offset, SEEK_SET);
- if (fread(sec->contents, sec->header.sh_size, 1, fp) != 1) {
- perror_msg("error reading ELF section data");
- return NULL;
- }
- } else {
- sec->contents = NULL;
- }
- break;
-
-#if SHT_RELM == SHT_REL
- case SHT_RELA:
- error_msg("RELA relocations not supported on this architecture");
- return NULL;
-#else
- case SHT_REL:
- error_msg("REL relocations not supported on this architecture");
- return NULL;
-#endif
-
- default:
- if (sec->header.sh_type >= SHT_LOPROC) {
- /* Assume processor specific section types are debug
- info and can safely be ignored. If this is ever not
- the case (Hello MIPS?), don't put ifdefs here but
- create an arch_load_proc_section(). */
- break;
- }
-
- error_msg("can't handle sections of type %ld",
- (long) sec->header.sh_type);
- return NULL;
- }
- }
-
- /* Do what sort of interpretation as needed by each section. */
-
- shstrtab = f->sections[f->header.e_shstrndx]->contents;
-
- for (i = 0; i < shnum; ++i) {
- struct obj_section *sec = f->sections[i];
- sec->name = shstrtab + sec->header.sh_name;
- }
-
- for (i = 0; i < shnum; ++i) {
- struct obj_section *sec = f->sections[i];
-
- /* .modinfo should be contents only but gcc has no attribute for that.
- * The kernel may have marked .modinfo as ALLOC, ignore this bit.
- */
- if (strcmp(sec->name, ".modinfo") == 0)
- sec->header.sh_flags &= ~SHF_ALLOC;
-
- if (sec->header.sh_flags & SHF_ALLOC)
- obj_insert_section_load_order(f, sec);
-
- switch (sec->header.sh_type) {
- case SHT_SYMTAB:
- {
- unsigned long nsym, j;
- char *strtab;
- ElfW(Sym) * sym;
-
- if (sec->header.sh_entsize != sizeof(ElfW(Sym))) {
- error_msg("symbol size mismatch: %lu != %lu",
- (unsigned long) sec->header.sh_entsize,
- (unsigned long) sizeof(ElfW(Sym)));
- return NULL;
- }
-
- nsym = sec->header.sh_size / sizeof(ElfW(Sym));
- strtab = f->sections[sec->header.sh_link]->contents;
- sym = (ElfW(Sym) *) sec->contents;
-
- /* Allocate space for a table of local symbols. */
- j = f->local_symtab_size = sec->header.sh_info;
- f->local_symtab = xcalloc(j, sizeof(struct obj_symbol *));
-
- /* Insert all symbols into the hash table. */
- for (j = 1, ++sym; j < nsym; ++j, ++sym) {
- const char *name;
- if (sym->st_name)
- name = strtab + sym->st_name;
- else
- name = f->sections[sym->st_shndx]->name;
-
- obj_add_symbol(f, name, j, sym->st_info, sym->st_shndx,
- sym->st_value, sym->st_size);
- }
- }
- break;
-
- case SHT_RELM:
- if (sec->header.sh_entsize != sizeof(ElfW(RelM))) {
- error_msg("relocation entry size mismatch: %lu != %lu",
- (unsigned long) sec->header.sh_entsize,
- (unsigned long) sizeof(ElfW(RelM)));
- return NULL;
- }
- break;
- /* XXX Relocation code from modutils-2.3.19 is not here.
- * Why? That's about 20 lines of code from obj/obj_load.c,
- * which gets done in a second pass through the sections.
- * This BusyBox insmod does similar work in obj_relocate(). */
- }
- }
-
- return f;
-}
-
-#ifdef BB_FEATURE_INSMOD_LOADINKMEM
-/*
- * load the unloaded sections directly into the memory allocated by
- * kernel for the module
- */
-
-static int obj_load_progbits(FILE * fp, struct obj_file* f, char* imagebase)
-{
- ElfW(Addr) base = f->baseaddr;
- struct obj_section* sec;
-
- for (sec = f->load_order; sec; sec = sec->load_next) {
-
- /* section already loaded? */
- if (sec->contents != NULL)
- continue;
-
- if (sec->header.sh_size == 0)
- continue;
-
- sec->contents = imagebase + (sec->header.sh_addr - base);
- fseek(fp, sec->header.sh_offset, SEEK_SET);
- if (fread(sec->contents, sec->header.sh_size, 1, fp) != 1) {
- error_msg("error reading ELF section data: %s\n", strerror(errno));
- return 0;
- }
-
- }
- return 1;
-}
-#endif
-
-static void hide_special_symbols(struct obj_file *f)
-{
- static const char *const specials[] = {
- "cleanup_module",
- "init_module",
- "kernel_version",
- NULL
- };
-
- struct obj_symbol *sym;
- const char *const *p;
-
- for (p = specials; *p; ++p)
- if ((sym = obj_find_symbol(f, *p)) != NULL)
- sym->info =
- ELFW(ST_INFO) (STB_LOCAL, ELFW(ST_TYPE) (sym->info));
-}
-
-#ifdef BB_FEATURE_INSMOD_CHECK_TAINTED
-static int obj_gpl_license(struct obj_file *f, const char **license)
-{
- struct obj_section *sec;
- /* This list must match *exactly* the list of allowable licenses in
- * linux/include/linux/module.h. Checking for leading "GPL" will not
- * work, somebody will use "GPL sucks, this is proprietary".
- */
- static const char *gpl_licenses[] = {
- "GPL",
- "GPL v2",
- "GPL and additional rights",
- "Dual BSD/GPL",
- "Dual MPL/GPL",
- };
-
- if ((sec = obj_find_section(f, ".modinfo"))) {
- const char *value, *ptr, *endptr;
- ptr = sec->contents;
- endptr = ptr + sec->header.sh_size;
- while (ptr < endptr) {
- if ((value = strchr(ptr, '=')) && strncmp(ptr, "license", value-ptr) == 0) {
- int i;
- if (license)
- *license = value+1;
- for (i = 0; i < sizeof(gpl_licenses)/sizeof(gpl_licenses[0]); ++i) {
- if (strcmp(value+1, gpl_licenses[i]) == 0)
- return(0);
- }
- return(2);
- }
- if (strchr(ptr, '\0'))
- ptr = strchr(ptr, '\0') + 1;
- else
- ptr = endptr;
- }
- }
- return(1);
-}
-
-#define TAINT_FILENAME "/proc/sys/kernel/tainted"
-#define TAINT_PROPRIETORY_MODULE (1<<0)
-#define TAINT_FORCED_MODULE (1<<1)
-#define TAINT_UNSAFE_SMP (1<<2)
-#define TAINT_URL "http://www.tux.org/lkml/#export-tainted"
-
-static void set_tainted(struct obj_file *f, int fd, char *m_name,
- int kernel_has_tainted, int taint, const char *text1, const char *text2)
-{
- char buf[80];
- int oldval;
- static int first = 1;
- if (fd < 0 && !kernel_has_tainted)
- return; /* New modutils on old kernel */
- printf("Warning: loading %s will taint the kernel: %s%s\n",
- m_name, text1, text2);
- if (first) {
- printf(" See %s for information about tainted modules\n", TAINT_URL);
- first = 0;
- }
- if (fd >= 0) {
- read(fd, buf, sizeof(buf)-1);
- buf[sizeof(buf)-1] = '\0';
- oldval = strtoul(buf, NULL, 10);
- sprintf(buf, "%d\n", oldval | taint);
- write(fd, buf, strlen(buf));
- }
-}
-#endif
-
-/* Check if loading this module will taint the kernel. */
-static void check_tainted_module(struct obj_file *f, char *m_name)
-{
-#ifdef BB_FEATURE_INSMOD_CHECK_TAINTED
- static const char tainted_file[] = TAINT_FILENAME;
- int fd, kernel_has_tainted;
- const char *ptr;
-
- kernel_has_tainted = 1;
- if ((fd = open(tainted_file, O_RDWR)) < 0) {
- if (errno == ENOENT)
- kernel_has_tainted = 0;
- else if (errno == EACCES)
- kernel_has_tainted = 1;
- else {
- perror(tainted_file);
- kernel_has_tainted = 0;
- }
- }
-
- switch (obj_gpl_license(f, &ptr)) {
- case 0:
- break;
- case 1:
- set_tainted(f, fd, m_name, kernel_has_tainted, TAINT_PROPRIETORY_MODULE, "no license", "");
- break;
- case 2:
- /* The module has a non-GPL license so we pretend that the
- * kernel always has a taint flag to get a warning even on
- * kernels without the proc flag.
- */
- set_tainted(f, fd, m_name, 1, TAINT_PROPRIETORY_MODULE, "non-GPL license - ", ptr);
- break;
- default:
- set_tainted(f, fd, m_name, 1, TAINT_PROPRIETORY_MODULE, "Unexpected return from obj_gpl_license", "");
- break;
- }
-
- if (flag_force_load)
- set_tainted(f, fd, m_name, 1, TAINT_FORCED_MODULE, "forced load", "");
-
- if (fd >= 0)
- close(fd);
-#endif
-}
-
-void my_usage(void)
-{
- printf("Usage.");
- exit(0);
-}
-
-extern int insmod_main( int argc, char **argv)
-{
- int k_crcs;
- int k_new_syscalls;
- int len;
- char *tmp;
- unsigned long m_size;
- ElfW(Addr) m_addr;
- FILE *fp;
- struct obj_file *f;
- char m_name[FILENAME_MAX] = "\0";
- int exit_status = EXIT_FAILURE;
- int m_has_modinfo;
-#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
- struct utsname uts_info;
- char m_strversion[STRVERSIONLEN];
- int m_version;
- int m_crcs;
-#endif
-
- if (argc <= 1)
- my_usage();
-
- argv++; argc--;
-
- /* Grab the module name */
- if ((tmp = strrchr(*argv, '/')) != NULL) {
- tmp++;
- } else {
- tmp = *argv;
- }
- len = strlen(tmp);
-
- if (len > 2 && tmp[len - 2] == '.' && tmp[len - 1] == 'o')
- len -= 2;
- memcpy(m_name, tmp, len);
- strcpy(m_fullName, m_name);
- strcat(m_fullName, ".o");
-
- /* Get a filedesc for the module. Check we we have a complete path */
- if ((fp = fopen(*argv, "r")) == NULL) {
- errorMsg("Module %s not found", *argv);
- return -1;
- } else
- memcpy(m_filename, *argv, strlen(*argv));
-
-
- if ((f = obj_load(fp, LOADBITS)) == NULL) {
- logperror("Could not load the module");
- goto out;
- }
-
- if (get_modinfo_value(f, "kernel_version") == NULL)
- m_has_modinfo = 0;
- else
- m_has_modinfo = 1;
-
-#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
- /* Version correspondence? */
- if (!flag_quiet) {
- if (uname(&uts_info) < 0)
- uts_info.release[0] = '\0';
- if (m_has_modinfo) {
- m_version = new_get_module_version(f, m_strversion);
- } else {
- m_version = old_get_module_version(f, m_strversion);
- if (m_version == -1) {
- error_msg("couldn't find the kernel version the module was "
- "compiled for");
- goto out;
- }
- }
-
- if (strncmp(uts_info.release, m_strversion, STRVERSIONLEN) != 0) {
- if (flag_force_load) {
- error_msg("Warning: kernel-module version mismatch\n"
- "\t%s was compiled for kernel version %s\n"
- "\twhile this kernel is version %s",
- m_filename, m_strversion, uts_info.release);
- } else {
- error_msg("kernel-module version mismatch\n"
- "\t%s was compiled for kernel version %s\n"
- "\twhile this kernel is version %s.",
- m_filename, m_strversion, uts_info.release);
- goto out;
- }
- }
- }
- k_crcs = 0;
-#endif /* BB_FEATURE_INSMOD_VERSION_CHECKING */
-
- k_new_syscalls = !query_module(NULL, 0, NULL, 0, NULL);
-
- if (k_new_syscalls) {
-#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
- if (!new_get_kernel_symbols())
- goto out;
- k_crcs = new_is_kernel_checksummed();
-#else
- error_msg("Not configured to support new kernels");
- goto out;
-#endif
- } else {
-#ifdef BB_FEATURE_OLD_MODULE_INTERFACE
- if (!old_get_kernel_symbols(m_name))
- goto out;
- k_crcs = old_is_kernel_checksummed();
-#else
- error_msg("Not configured to support old kernels");
- goto out;
-#endif
- }
-
-#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
- if (m_has_modinfo)
- m_crcs = new_is_module_checksummed(f);
- else
- m_crcs = old_is_module_checksummed(f);
-
- if (m_crcs != k_crcs)
- obj_set_symbol_compare(f, ncv_strcmp, ncv_symbol_hash);
-#endif /* BB_FEATURE_INSMOD_VERSION_CHECKING */
-
- /* Let the module know about the kernel symbols. */
- add_kernel_symbols(f);
-
- /* Allocate common symbols, symbol tables, and string tables. */
-
- if (k_new_syscalls
- ? !new_create_this_module(f, m_name)
- : !old_create_mod_use_count(f))
- {
- goto out;
- }
-
- if (!obj_check_undefineds(f)) {
- goto out;
- }
- obj_allocate_commons(f);
- check_tainted_module(f, m_name);
-
- if (m_has_modinfo
- ? !new_process_module_arguments(f, argc - 1, argv + 1)
- : !old_process_module_arguments(f, argc - 1, argv + 1))
- {
- goto out;
- }
-
- arch_create_got(f);
- hide_special_symbols(f);
-
- if (k_new_syscalls)
- new_create_module_ksymtab(f);
-
- /* Find current size of the module */
- m_size = obj_load_size(f);
-
-
- m_addr = create_module(m_name, m_size);
- if (m_addr==-1) switch (errno) {
- case EEXIST:
- error_msg("A module named %s already exists", m_name);
- goto out;
- case ENOMEM:
- error_msg("Can't allocate kernel memory for module; needed %lu bytes",
- m_size);
- goto out;
- default:
- perror_msg("create_module: %s", m_name);
- goto out;
- }
-
-#if !LOADBITS
- /*
- * the PROGBITS section was not loaded by the obj_load
- * now we can load them directly into the kernel memory
- */
- if (!obj_load_progbits(fp, f, (char*)m_addr)) {
- delete_module(m_name);
- goto out;
- }
-#endif
-
- if (!obj_relocate(f, m_addr)) {
- delete_module(m_name);
- goto out;
- }
-
- if (k_new_syscalls
- ? !new_init_module(m_name, f, m_size)
- : !old_init_module(m_name, f, m_size))
- {
- delete_module(m_name);
- goto out;
- }
-
- exit_status = EXIT_SUCCESS;
-
-out:
- fclose(fp);
- return(exit_status);
-}
-
-int insmod_call(char * full_filename, char * params)
-{
- int argc = 2;
- char *argv[50];
- char * ptr = params;
- argv[0] = "stage1";
- argv[1] = full_filename;
-
- while (ptr != NULL) {
- argv[argc] = ptr;
- argc++;
- ptr = strchr(ptr, ' ');
- if (ptr) {
- ptr[0] = '\0';
- ptr++;
- }
- }
-
- return insmod_main(argc, argv);
-}