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authorGwenolé Beauchesne <gbeauchesne@mandriva.org>2003-04-16 17:11:13 +0000
committerGwenolé Beauchesne <gbeauchesne@mandriva.org>2003-04-16 17:11:13 +0000
commitf699b1c08d453d010b35af5d82aaf89263de7fdf (patch)
treeb51d6b89698567255facc33b5098c5db5b6737e9 /mdk-stage1
parentd4b888c7b7e44576af4c56b4f01dc0d28c16eaac (diff)
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- Update to busybox 0.65.0 version
- Add support for x86-64
Diffstat (limited to 'mdk-stage1')
-rw-r--r--mdk-stage1/insmod-busybox/Config.h9
-rw-r--r--mdk-stage1/insmod-busybox/Makefile2
-rw-r--r--mdk-stage1/insmod-busybox/busybox.h10
-rw-r--r--mdk-stage1/insmod-busybox/insmod.c1792
4 files changed, 1316 insertions, 497 deletions
diff --git a/mdk-stage1/insmod-busybox/Config.h b/mdk-stage1/insmod-busybox/Config.h
index 8388416b7..04685f6d7 100644
--- a/mdk-stage1/insmod-busybox/Config.h
+++ b/mdk-stage1/insmod-busybox/Config.h
@@ -49,10 +49,11 @@
//#define BB_FEATURE_FBSET_READMODE
//
// You must enable one or both of these features
-// Support installing modules from pre 2.1 kernels
-//#define BB_FEATURE_INSMOD_OLD_KERNEL
-// Support installing modules from kernel versions after 2.1.18
-#define BB_FEATURE_INSMOD_NEW_KERNEL
+// Support insmod/lsmod/rmmod for post 2.1 kernels
+#define BB_FEATURE_NEW_MODULE_INTERFACE
+//
+// Support insmod/lsmod/rmmod for pre 2.1 kernels
+//#define BB_FEATURE_OLD_MODULE_INTERFACE
//
// Support module version checking
//#define BB_FEATURE_INSMOD_VERSION_CHECKING
diff --git a/mdk-stage1/insmod-busybox/Makefile b/mdk-stage1/insmod-busybox/Makefile
index c8649ae0d..a81740681 100644
--- a/mdk-stage1/insmod-busybox/Makefile
+++ b/mdk-stage1/insmod-busybox/Makefile
@@ -19,7 +19,7 @@ clean:
rm -f *.o insmod insmod-DIET libinsmod.a libinsmod-DIET.a
-FLAGS = -c -Wall -Os -fomit-frame-pointer -D_GNU_SOURCE -DBB_VER='"0.47"' -DBB_BT='"2000.12.06-14:02+0000"'
+FLAGS = -c -Wall -Os -fomit-frame-pointer -D_GNU_SOURCE -DBB_VER='"0.60.5"' -DBB_BT='"2003.04.16-15:25+0000"'
insmod: insmod-frontend.o insmod.o utility-standalone.o
diff --git a/mdk-stage1/insmod-busybox/busybox.h b/mdk-stage1/insmod-busybox/busybox.h
index a2d620c8b..e01ff76f5 100644
--- a/mdk-stage1/insmod-busybox/busybox.h
+++ b/mdk-stage1/insmod-busybox/busybox.h
@@ -464,4 +464,14 @@ extern int sysinfo (struct sysinfo* info);
#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
#endif
+/* Merge from busybox 0.65.0 */
+#define error_msg errorMsg
+#define perror_msg(FORMAT,...) error_msg(FORMAT ": %s", ## __VA_ARGS__, strerror(errno))
+#define recursive_action recursiveAction
+
+#define safe_strncpy(DST, SRC, SIZE) do { \
+ (DST)[SIZE-1] = '\0'; \
+ return strncpy((DST), (SRC),(SIZE)-1); \
+} while (0)
+
#endif /* _BB_INTERNAL_H_ */
diff --git a/mdk-stage1/insmod-busybox/insmod.c b/mdk-stage1/insmod-busybox/insmod.c
index bdf7ba5f7..61908b07a 100644
--- a/mdk-stage1/insmod-busybox/insmod.c
+++ b/mdk-stage1/insmod-busybox/insmod.c
@@ -2,16 +2,40 @@
/*
* Mini insmod implementation for busybox
*
- * Copyright (C) 1999,2000 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>
- * and Ron Alder <alder@lineo.com>
+ * 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. Note that there is still no true
- * multiple architecture support. You just get SH3|SH4|i386, despite
- * the mention of ARM and m68k--which may or may not work (but
- * almost certainly do not, due to at least MATCH_MACHINE). I have
- * only tested SH4 in little endian mode.
+ * 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.
@@ -37,7 +61,6 @@
*/
#include "../insmod.h"
-#include "busybox.h"
#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
@@ -46,7 +69,173 @@
#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 1
+
+#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
@@ -75,9 +264,7 @@
#ifndef MODUTILS_MODULE_H
-#define MODUTILS_MODULE_H 1
-
-#ident "$Id$"
+#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
@@ -134,7 +321,7 @@ struct old_module
};
/* Sent to init_module(2) or'ed into the code size parameter. */
-#define OLD_MOD_AUTOCLEAN 0x40000000 /* big enough, but no sign problems... */
+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,
@@ -157,9 +344,9 @@ int old_sys_init_module(const char *name, char *code, unsigned codesize,
#undef tgt_sizeof_char_p
#undef tgt_sizeof_void_p
#undef tgt_long
-#define tgt_sizeof_long 8
-#define tgt_sizeof_char_p 8
-#define tgt_sizeof_void_p 8
+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
@@ -210,8 +397,23 @@ struct new_module
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;
@@ -221,11 +423,11 @@ struct new_module_info
};
/* Bits of module.flags. */
-#define NEW_MOD_RUNNING 1
-#define NEW_MOD_DELETED 2
-#define NEW_MOD_AUTOCLEAN 4
-#define NEW_MOD_VISITED 8
-#define NEW_MOD_USED_ONCE 16
+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,
@@ -233,11 +435,11 @@ int query_module(const char *name, int which, void *buf, size_t bufsize,
/* Values for query_module's which. */
-#define QM_MODULES 1
-#define QM_DEPS 2
-#define QM_REFS 3
-#define QM_SYMBOLS 4
-#define QM_INFO 5
+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. */
@@ -281,52 +483,18 @@ int delete_module(const char *);
#ifndef MODUTILS_OBJ_H
-#define MODUTILS_OBJ_H 1
-
-#ident "$Id$"
+static const int MODUTILS_OBJ_H = 1;
/* The relocatable object is manipulated using elfin types. */
#include <stdio.h>
#include <elf.h>
+#include <endian.h>
-
-/* Machine-specific elf macros for i386 et al. */
-
-/* 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
-
-#define ELFCLASSM ELFCLASS32
-#define ELFDATAM ELFDATA2LSB
-
-
-
-#if defined(__sh__)
-
-#define MATCH_MACHINE(x) (x == EM_SH)
-#define SHT_RELM SHT_RELA
-#define Elf32_RelM Elf32_Rela
-
-#else
-
-/* presumably we can use these for anything but the SH */
-/* this is the previous behavior, but it does result in
- insmod.c being broken on anything except i386 */
-
-#define MATCH_MACHINE(x) (x == EM_386)
-#define SHT_RELM SHT_REL
-#define Elf32_RelM Elf32_Rel
-
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define ELFDATAM ELFDATA2LSB
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#define ELFDATAM ELFDATA2MSB
#endif
#ifndef ElfW
@@ -421,78 +589,79 @@ struct obj_symbol_patch
/* Generic object manipulation routines. */
-unsigned long obj_elf_hash(const char *);
+static unsigned long obj_elf_hash(const char *);
-unsigned long obj_elf_hash_n(const char *, unsigned long len);
+static unsigned long obj_elf_hash_n(const char *, unsigned long len);
-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 *obj_find_symbol (struct obj_file *f,
+static struct obj_symbol *obj_find_symbol (struct obj_file *f,
const char *name);
-ElfW(Addr) obj_symbol_final_value(struct obj_file *f,
+static ElfW(Addr) obj_symbol_final_value(struct obj_file *f,
struct obj_symbol *sym);
-void obj_set_symbol_compare(struct obj_file *f,
+#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
-struct obj_section *obj_find_section (struct obj_file *f,
+static struct obj_section *obj_find_section (struct obj_file *f,
const char *name);
-void obj_insert_section_load_order (struct obj_file *f,
+static void obj_insert_section_load_order (struct obj_file *f,
struct obj_section *sec);
-struct obj_section *obj_create_alloced_section (struct obj_file *f,
+static struct obj_section *obj_create_alloced_section (struct obj_file *f,
const char *name,
unsigned long align,
unsigned long size);
-struct obj_section *obj_create_alloced_section_first (struct obj_file *f,
+static struct obj_section *obj_create_alloced_section_first (struct obj_file *f,
const char *name,
unsigned long align,
unsigned long size);
-void *obj_extend_section (struct obj_section *sec, unsigned long more);
+static void *obj_extend_section (struct obj_section *sec, unsigned long more);
-int obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
+static int obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
const char *string);
-int obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
+#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
-int obj_check_undefineds(struct obj_file *f);
+static int obj_check_undefineds(struct obj_file *f);
-void obj_allocate_commons(struct obj_file *f);
+static void obj_allocate_commons(struct obj_file *f);
-unsigned long obj_load_size (struct obj_file *f);
+static unsigned long obj_load_size (struct obj_file *f);
-int obj_relocate (struct obj_file *f, ElfW(Addr) base);
+static int obj_relocate (struct obj_file *f, ElfW(Addr) base);
-struct obj_file *obj_load(FILE *f);
+static struct obj_file *obj_load(FILE *f, int loadprogbits);
-int obj_create_image (struct obj_file *f, char *image);
+static int obj_create_image (struct obj_file *f, char *image);
/* Architecture specific manipulation routines. */
-struct obj_file *arch_new_file (void);
+static struct obj_file *arch_new_file (void);
-struct obj_section *arch_new_section (void);
+static struct obj_section *arch_new_section (void);
-struct obj_symbol *arch_new_symbol (void);
+static struct obj_symbol *arch_new_symbol (void);
-enum obj_reloc arch_apply_relocation (struct obj_file *f,
+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);
-int arch_create_got (struct obj_file *f);
+static void arch_create_got (struct obj_file *f);
-struct new_module;
-int arch_init_module (struct obj_file *f, struct new_module *);
+#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
+static int arch_init_module (struct obj_file *f, struct new_module *);
+#endif
#endif /* obj.h */
//----------------------------------------------------------------------------
@@ -504,41 +673,75 @@ int arch_init_module (struct obj_file *f, struct new_module *);
#define _PATH_MODULES "/lib/modules"
-#define STRVERSIONLEN 32
-
-#if !defined(BB_FEATURE_INSMOD_NEW_KERNEL) && !defined(BB_FEATURE_INSMOD_OLD_KERNEL)
-#error "Must have ether BB_FEATURE_INSMOD_NEW_KERNEL or BB_FEATURE_INSMOD_OLD_KERNEL defined"
-#endif
+static const int STRVERSIONLEN = 32;
/*======================================================================*/
-int flag_force_load = 1;
-int flag_autoclean = 0;
-int flag_export = 1;
+static int flag_force_load = 1;
+static int flag_autoclean = 0;
+static int flag_quiet = 0;
+static int flag_export = 1;
/*======================================================================*/
-/* previously, these were named i386_* but since we could be
- compiling for the sh, I've renamed them to the more general
- arch_* These structures are the same between the x86 and SH,
- and we can't support anything else right now anyway. In the
- future maybe they should be #if defined'd */
+#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_got_entry {
+struct arch_single_entry
+{
int offset;
- unsigned offset_done:1;
- unsigned reloc_done:1;
+ 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;
- struct arch_got_entry gotent;
+#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
};
@@ -550,308 +753,736 @@ struct external_module {
struct new_module_symbol *syms;
};
-struct new_module_symbol *ksyms;
-size_t nksyms;
-
-struct external_module *ext_modules;
-int n_ext_modules;
-int n_ext_modules_used;
-
+static struct new_module_symbol *ksyms;
+static size_t nksyms;
-
-/* Some firendly syscalls to cheer everyone's day... */
-#define __NR_new_sys_init_module __NR_init_module
-_syscall2(int, new_sys_init_module, const char *, name,
- const struct new_module *, info)
-#define __NR_old_sys_init_module __NR_init_module
-_syscall5(int, old_sys_init_module, const char *, name, char *, code,
- unsigned, codesize, struct old_mod_routines *, routines,
- struct old_symbol_table *, symtab)
-#ifndef BB_RMMOD
-_syscall1(int, delete_module, const char *, name)
-#else
+static struct external_module *ext_modules;
+static int n_ext_modules;
+static int n_ext_modules_used;
extern int delete_module(const char *);
-#endif
-
-/* This is kind of troublesome. See, we don't actually support
- the m68k or the arm the same way we support i386 and (now)
- sh. In doing my SH patch, I just assumed that whatever works
- for i386 also works for m68k and arm since currently insmod.c
- does nothing special for them. If this isn't true, the below
- line is rather misleading IMHO, and someone should either
- change it or add more proper architecture-dependent support
- for these boys.
-
- -- Bryan Rittmeyer <bryan@ixiacom.com> */
-
-#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)
+#ifndef FILENAME_MAX
+#define FILENAME_MAX 4095
#endif
-static char m_filename[BUFSIZ + 1] = "\0";
-static char m_fullName[BUFSIZ + 1] = "\0";
-/*======================================================================*/
+static char m_filename[FILENAME_MAX];
+static char m_fullName[FILENAME_MAX];
+
/*======================================================================*/
-struct obj_file *arch_new_file(void)
+static struct obj_file *arch_new_file(void)
{
struct arch_file *f;
f = xmalloc(sizeof(*f));
- f->got = NULL;
+
+ memset(f, 0, sizeof(*f));
+
return &f->root;
}
-struct obj_section *arch_new_section(void)
+static struct obj_section *arch_new_section(void)
{
return xmalloc(sizeof(struct obj_section));
}
-struct obj_symbol *arch_new_symbol(void)
+static struct obj_symbol *arch_new_symbol(void)
{
struct arch_symbol *sym;
sym = xmalloc(sizeof(*sym));
- memset(&sym->gotent, 0, sizeof(sym->gotent));
+
+ memset(sym, 0, sizeof(*sym));
+
return &sym->root;
}
-enum obj_reloc
+static enum obj_reloc
arch_apply_relocation(struct obj_file *f,
struct obj_section *targsec,
struct obj_section *symsec,
struct obj_symbol *sym,
-#if defined(__sh__)
- Elf32_Rela * rel, Elf32_Addr v)
-#else
- Elf32_Rel * rel, Elf32_Addr v)
-#endif
+ 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
- Elf32_Addr *loc = (Elf32_Addr *) (targsec->contents + rel->r_offset);
- Elf32_Addr dot = targsec->header.sh_addr + rel->r_offset;
- Elf32_Addr got = ifile->got ? ifile->got->header.sh_addr : 0;
+ switch (ELF32_R_TYPE(rel->r_info)) {
- enum obj_reloc ret = obj_reloc_ok;
+#if defined(__arm__)
+ case R_ARM_NONE:
+ break;
- switch (ELF32_R_TYPE(rel->r_info)) {
+ 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__)
-/* even though these constants seem to be the same for
- the i386 and the sh, we "#if define" them for clarity
- and in case that ever changes */
-#if defined(__sh__)
- case R_SH_NONE:
-#else
case R_386_NONE:
-#endif
break;
-#if defined(__sh__)
- case R_SH_DIR32:
-#else
case R_386_32:
-#endif
*loc += v;
break;
-#if defined(__sh__)
- case R_SH_REL32:
-#else
case R_386_PLT32:
case R_386_PC32:
-#endif
*loc += v - dot;
break;
-#if defined(__sh__)
- case R_SH_PLT32:
- *loc = v - dot;
- break;
-#endif
-
-
-#if defined(__sh__)
- case R_SH_GLOB_DAT:
- case R_SH_JMP_SLOT:
- *loc = v;
- break;
-#else
case R_386_GLOB_DAT:
case R_386_JMP_SLOT:
*loc = v;
break;
-#endif
-#if defined(__sh__)
- case R_SH_RELATIVE:
- *loc += f->baseaddr + rel->r_addend;
- break;
-#else
- case R_386_RELATIVE:
+ case R_386_RELATIVE:
*loc += f->baseaddr;
break;
-#endif
-#if defined(__sh__)
- case R_SH_GOTPC:
- assert(got != 0);
- *loc += got - dot + rel->r_addend;;
- break;
-#else
case R_386_GOTPC:
assert(got != 0);
*loc += got - dot;
break;
-#endif
-#if defined(__sh__)
- case R_SH_GOT32:
- assert(isym != NULL);
- if (!isym->gotent.reloc_done) {
- isym->gotent.reloc_done = 1;
- *(Elf32_Addr *) (ifile->got->contents + isym->gotent.offset) =
- v;
- }
- *loc += isym->gotent.offset + rel->r_addend;
- break;
-#else
case R_386_GOT32:
- assert(isym != NULL);
- if (!isym->gotent.reloc_done) {
- isym->gotent.reloc_done = 1;
- *(Elf32_Addr *) (ifile->got->contents + isym->gotent.offset) =
- v;
+ 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;
}
- *loc += isym->gotent.offset;
+ *(char *)loc = v;
break;
-#endif
-#if defined(__sh__)
- case R_SH_GOTOFF:
-#else
- case R_386_GOTOFF:
-#endif
+ 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;
}
-int arch_create_got(struct obj_file *f)
+#if defined(BB_USE_LIST)
+
+static int arch_list_add(ElfW(RelM) *rel, struct arch_list_entry **list,
+ int offset, int size)
{
- struct arch_file *ifile = (struct arch_file *) f;
- int i, n, offset = 0, gotneeded = 0;
+ 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;
+}
- n = ifile->root.header.e_shnum;
- for (i = 0; i < n; ++i) {
- struct obj_section *relsec, *symsec, *strsec;
-#if defined(__sh__)
- Elf32_Rela *rel, *relend;
-#else
- Elf32_Rel *rel, *relend;
#endif
- Elf32_Sym *symtab;
- const char *strtab;
- relsec = ifile->root.sections[i];
- if (relsec->header.sh_type != SHT_REL)
- continue;
+#if defined(BB_USE_SINGLE)
- symsec = ifile->root.sections[relsec->header.sh_link];
- strsec = ifile->root.sections[symsec->header.sh_link];
+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(__sh__)
- rel = (Elf32_Rela *) relsec->contents;
- relend = rel + (relsec->header.sh_size / sizeof(Elf32_Rela));
-#else
- rel = (Elf32_Rel *) relsec->contents;
- relend = rel + (relsec->header.sh_size / sizeof(Elf32_Rel));
+#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
- symtab = (Elf32_Sym *) symsec->contents;
+ 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) {
- Elf32_Sym *extsym;
- struct arch_symbol *intsym;
- const char *name;
+ 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(__sh__)
- case R_SH_GOTPC:
- case R_SH_GOTOFF:
-#else
+
+#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:
-#endif
- gotneeded = 1;
- default:
+ got_needed = 1;
continue;
-#if defined(__sh__)
- case R_SH_GOT32:
-#else
case R_386_GOT32:
-#endif
+ 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;
}
- extsym = &symtab[ELF32_R_SYM(rel->r_info)];
- if (extsym->st_name)
+ if (extsym->st_name != 0) {
name = strtab + extsym->st_name;
- else
+ } else {
name = f->sections[extsym->st_shndx]->name;
- intsym =
- (struct arch_symbol *) obj_find_symbol(&ifile->root, name);
-
- if (!intsym->gotent.offset_done) {
- intsym->gotent.offset_done = 1;
- intsym->gotent.offset = offset;
- offset += 4;
}
+ 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 (offset > 0 || gotneeded)
- ifile->got =
- obj_create_alloced_section(&ifile->root, ".got", 4, offset);
+#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
- return 1;
+#endif /* defined(BB_USE_GOT_ENTRIES) || defined(BB_USE_PLT_ENTRIES) */
}
-int arch_init_module(struct obj_file *f, struct new_module *mod)
+#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. */
-inline unsigned long obj_elf_hash_n(const char *name, unsigned long n)
+static inline unsigned long obj_elf_hash_n(const char *name, unsigned long n)
{
unsigned long h = 0;
unsigned long g;
@@ -869,38 +1500,12 @@ inline unsigned long obj_elf_hash_n(const char *name, unsigned long n)
return h;
}
-unsigned long obj_elf_hash(const char *name)
+static unsigned long obj_elf_hash(const char *name)
{
return obj_elf_hash_n(name, strlen(name));
}
#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
-/* Get the kernel version in the canonical integer form. */
-
-static int get_kernel_version(char str[STRVERSIONLEN])
-{
- struct utsname uts_info;
- char *p, *q;
- int a, b, c;
-
- if (uname(&uts_info) < 0)
- return -1;
- strncpy(str, uts_info.release, STRVERSIONLEN);
- p = uts_info.release;
-
- 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;
-}
-
/* String comparison for non-co-versioned kernel and module. */
static int ncv_strcmp(const char *a, const char *b)
@@ -926,7 +1531,7 @@ static unsigned long ncv_symbol_hash(const char *str)
return obj_elf_hash_n(str, len);
}
-void
+static void
obj_set_symbol_compare(struct obj_file *f,
int (*cmp) (const char *, const char *),
unsigned long (*hash) (const char *))
@@ -954,8 +1559,8 @@ obj_set_symbol_compare(struct obj_file *f,
#endif /* BB_FEATURE_INSMOD_VERSION_CHECKING */
-
-struct obj_symbol *obj_add_symbol(struct obj_file *f, const char *name,
+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)
@@ -1020,7 +1625,7 @@ struct obj_symbol *obj_add_symbol(struct obj_file *f, const char *name,
/* Don't report an error if the symbol is coming from
the kernel or some external module. */
if (secidx <= SHN_HIRESERVE)
- errorMsg("%s multiply defined", name);
+ error_msg("%s multiply defined", name);
return sym;
}
}
@@ -1031,8 +1636,13 @@ struct obj_symbol *obj_add_symbol(struct obj_file *f, const char *name,
f->symtab[hash] = sym;
sym->ksymidx = -1;
- if (ELFW(ST_BIND) (info) == STB_LOCAL)
- f->local_symtab[symidx] = sym;
+ 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;
@@ -1044,7 +1654,8 @@ struct obj_symbol *obj_add_symbol(struct obj_file *f, const char *name,
return sym;
}
-struct obj_symbol *obj_find_symbol(struct obj_file *f, const char *name)
+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;
@@ -1056,7 +1667,7 @@ struct obj_symbol *obj_find_symbol(struct obj_file *f, const char *name)
return NULL;
}
-ElfW(Addr)
+static ElfW(Addr)
obj_symbol_final_value(struct obj_file * f, struct obj_symbol * sym)
{
if (sym) {
@@ -1070,7 +1681,7 @@ ElfW(Addr)
}
}
-struct obj_section *obj_find_section(struct obj_file *f, const char *name)
+static struct obj_section *obj_find_section(struct obj_file *f, const char *name)
{
int i, n = f->header.e_shnum;
@@ -1103,7 +1714,7 @@ static int obj_load_order_prio(struct obj_section *a)
return ac;
}
-void
+static void
obj_insert_section_load_order(struct obj_file *f, struct obj_section *sec)
{
struct obj_section **p;
@@ -1115,7 +1726,7 @@ obj_insert_section_load_order(struct obj_file *f, struct obj_section *sec)
*p = sec;
}
-struct obj_section *obj_create_alloced_section(struct obj_file *f,
+static struct obj_section *obj_create_alloced_section(struct obj_file *f,
const char *name,
unsigned long align,
unsigned long size)
@@ -1141,7 +1752,7 @@ struct obj_section *obj_create_alloced_section(struct obj_file *f,
return sec;
}
-struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
+static struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
const char *name,
unsigned long align,
unsigned long size)
@@ -1170,15 +1781,16 @@ struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
return sec;
}
-void *obj_extend_section(struct obj_section *sec, unsigned long more)
+static void *obj_extend_section(struct obj_section *sec, unsigned long more)
{
unsigned long oldsize = sec->header.sh_size;
- sec->contents = xrealloc(sec->contents, sec->header.sh_size += more);
+ 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. */
@@ -1283,7 +1895,7 @@ old_process_module_arguments(struct obj_file *f, int argc, char **argv)
/* Also check that the parameter was not resolved from the kernel. */
if (sym == NULL || sym->secidx > SHN_HIRESERVE) {
- errorMsg("symbol for parameter %s not found", p);
+ error_msg("symbol for parameter %s not found", p);
return 0;
}
@@ -1296,7 +1908,7 @@ old_process_module_arguments(struct obj_file *f, int argc, char **argv)
str = alloca(strlen(q));
for (r = str, q++; *q != '"'; ++q, ++r) {
if (*q == '\0') {
- errorMsg("improperly terminated string argument for %s", p);
+ error_msg("improperly terminated string argument for %s", p);
return 0;
} else if (*q == '\\')
switch (*++q) {
@@ -1355,19 +1967,19 @@ old_process_module_arguments(struct obj_file *f, int argc, char **argv)
while (*q++ == ',');
} else {
char *contents = f->sections[sym->secidx]->contents;
- char *loc = contents + sym->value;
+ 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, loc - contents, q);
- loc += sizeof(char *);
+ obj_string_patch(f, sym->secidx, myloc - contents, q);
+ myloc += sizeof(char *);
q = r;
}
/* last part */
- obj_string_patch(f, sym->secidx, loc - contents, q);
+ obj_string_patch(f, sym->secidx, myloc - contents, q);
}
argc--, argv++;
@@ -1395,7 +2007,7 @@ old_get_module_version(struct obj_file *f, char str[STRVERSIONLEN])
return -1;
p = f->sections[sym->secidx]->contents + sym->value;
- strncpy(str, p, STRVERSIONLEN);
+ safe_strncpy(str, p, STRVERSIONLEN);
a = strtoul(p, &p, 10);
if (*p != '.')
@@ -1412,7 +2024,7 @@ old_get_module_version(struct obj_file *f, char str[STRVERSIONLEN])
#endif /* BB_FEATURE_INSMOD_VERSION_CHECKING */
-#ifdef BB_FEATURE_INSMOD_OLD_KERNEL
+#ifdef BB_FEATURE_OLD_MODULE_INTERFACE
/* Fetch all the symbols and divvy them up as appropriate for the modules. */
@@ -1424,15 +2036,18 @@ static int old_get_kernel_symbols(const char *m_name)
int nks, nms, nmod, i;
nks = get_kernel_syms(NULL);
- if (nks < 0) {
- errorMsg("get_kernel_syms: %s: %s", m_name, strerror(errno));
+ 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) {
- logperror("inconsistency with get_kernel_syms -- is someone else "
+ perror("inconsistency with get_kernel_syms -- is someone else "
"playing with modules?");
free(ks);
return 0;
@@ -1445,7 +2060,6 @@ static int old_get_kernel_symbols(const char *m_name)
while (k->name[0] == '#' && k->name[1]) {
struct old_kernel_sym *k2;
- struct new_module_symbol *s;
/* Find out how many symbols this module has. */
for (k2 = k + 1; k2->name[0] != '#'; ++k2)
@@ -1567,7 +2181,8 @@ old_init_module(const char *m_name, struct obj_file *f,
ksym->name =
(unsigned long) str - (unsigned long) symtab;
- str = stpcpy(str, sym->name) + 1;
+ strcpy(str, sym->name);
+ str += strlen(sym->name) + 1;
ksym++;
}
}
@@ -1606,7 +2221,7 @@ old_init_module(const char *m_name, struct obj_file *f,
m_size | (flag_autoclean ? OLD_MOD_AUTOCLEAN
: 0), &routines, symtab);
if (ret)
- errorMsg("init_module: %s: %s", m_name, strerror(errno));
+ perror_msg("init_module: %s", m_name);
free(image);
free(symtab);
@@ -1619,7 +2234,7 @@ old_init_module(const char *m_name, struct obj_file *f,
#define old_create_mod_use_count(x) TRUE
#define old_init_module(x, y, z) TRUE
-#endif /* BB_FEATURE_INSMOD_OLD_KERNEL */
+#endif /* BB_FEATURE_OLD_MODULE_INTERFACE */
@@ -1649,7 +2264,7 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
p = get_modinfo_value(f, key);
key += 5;
if (p == NULL) {
- errorMsg("invalid parameter %s", key);
+ error_msg("invalid parameter %s", key);
return 0;
}
@@ -1657,7 +2272,7 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
/* Also check that the parameter was not resolved from the kernel. */
if (sym == NULL || sym->secidx > SHN_HIRESERVE) {
- errorMsg("symbol for parameter %s not found", key);
+ error_msg("symbol for parameter %s not found", key);
return 0;
}
@@ -1685,7 +2300,7 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
str = alloca(strlen(q));
for (r = str, q++; *q != '"'; ++q, ++r) {
if (*q == '\0') {
- errorMsg("improperly terminated string argument for %s",
+ error_msg("improperly terminated string argument for %s",
key);
return 0;
} else if (*q == '\\')
@@ -1779,7 +2394,7 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
/* Get the size of each member */
/* Probably we should do that outside the loop ? */
if (!isdigit(*(p + 1))) {
- errorMsg("parameter type 'c' for %s must be followed by"
+ error_msg("parameter type 'c' for %s must be followed by"
" the maximum size", key);
return 0;
}
@@ -1787,7 +2402,7 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
/* Check length */
if (strlen(str) >= charssize) {
- errorMsg("string too long for %s (max %ld)", key,
+ error_msg("string too long for %s (max %ld)", key,
charssize - 1);
return 0;
}
@@ -1816,7 +2431,7 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
break;
default:
- errorMsg("unknown parameter type '%c' for %s", *p, key);
+ error_msg("unknown parameter type '%c' for %s", *p, key);
return 0;
}
}
@@ -1835,21 +2450,21 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
case ',':
if (++n > max) {
- errorMsg("too many values for %s (max %d)", key, max);
+ error_msg("too many values for %s (max %d)", key, max);
return 0;
}
++q;
break;
default:
- errorMsg("invalid argument syntax for %s", key);
+ error_msg("invalid argument syntax for %s", key);
return 0;
}
}
end_of_arg:
if (n < min) {
- errorMsg("too few values for %s (min %d)", key, min);
+ error_msg("too few values for %s (min %d)", key, min);
return 0;
}
@@ -1880,7 +2495,7 @@ new_get_module_version(struct obj_file *f, char str[STRVERSIONLEN])
p = get_modinfo_value(f, "kernel_version");
if (p == NULL)
return -1;
- strncpy(str, p, STRVERSIONLEN);
+ safe_strncpy(str, p, STRVERSIONLEN);
a = strtoul(p, &p, 10);
if (*p != '.')
@@ -1898,7 +2513,7 @@ new_get_module_version(struct obj_file *f, char str[STRVERSIONLEN])
#endif /* BB_FEATURE_INSMOD_VERSION_CHECKING */
-#ifdef BB_FEATURE_INSMOD_NEW_KERNEL
+#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
/* Fetch the loaded modules, and all currently exported symbols. */
@@ -1914,57 +2529,59 @@ static int new_get_kernel_symbols(void)
module_names = xmalloc(bufsize = 256);
retry_modules_load:
if (query_module(NULL, QM_MODULES, module_names, bufsize, &ret)) {
- if (errno == ENOSPC) {
+ if (errno == ENOSPC && bufsize < ret) {
module_names = xrealloc(module_names, bufsize = ret);
goto retry_modules_load;
}
- errorMsg("QM_MODULES: %s", strerror(errno));
+ perror_msg("QM_MODULES");
return 0;
}
n_ext_modules = nmod = ret;
- ext_modules = modules = xmalloc(nmod * sizeof(*modules));
- memset(modules, 0, nmod * sizeof(*modules));
/* Collect the modules' symbols. */
- 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;
- }
- errorMsg("query_module: QM_INFO: %s: %s", mn, strerror(errno));
- 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:
- errorMsg("query_module: QM_SYMBOLS: %s: %s", mn, strerror(errno));
+ 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;
}
- }
- 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;
+
+ 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;
+ }
}
}
@@ -1973,11 +2590,11 @@ static int new_get_kernel_symbols(void)
syms = xmalloc(bufsize = 16 * 1024);
retry_kern_sym_load:
if (query_module(NULL, QM_SYMBOLS, syms, bufsize, &ret)) {
- if (errno == ENOSPC) {
+ if (errno == ENOSPC && bufsize < ret) {
syms = xrealloc(syms, bufsize = ret);
goto retry_kern_sym_load;
}
- errorMsg("kernel: QM_SYMBOLS: %s", strerror(errno));
+ perror_msg("kernel: QM_SYMBOLS");
return 0;
}
nksyms = nsyms = ret;
@@ -2106,6 +2723,10 @@ new_init_module(const char *m_name, struct obj_file *f,
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;
@@ -2146,6 +2767,16 @@ new_init_module(const char *m_name, struct obj_file *f,
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;
@@ -2158,7 +2789,7 @@ new_init_module(const char *m_name, struct obj_file *f,
ret = new_sys_init_module(m_name, (struct new_module *) image);
if (ret)
- errorMsg("init_module: %s: %s", m_name, strerror(errno));
+ perror_msg("init_module: %s", m_name);
free(image);
@@ -2170,13 +2801,14 @@ new_init_module(const char *m_name, struct obj_file *f,
#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_INSMOD_OLD_KERNEL */
+#endif /* BB_FEATURE_NEW_MODULE_INTERFACE */
/*======================================================================*/
-int
+static int
obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
const char *string)
{
@@ -2205,7 +2837,8 @@ obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
return 1;
}
-int
+#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
+static int
obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
struct obj_symbol *sym)
{
@@ -2220,8 +2853,9 @@ obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
return 1;
}
+#endif
-int obj_check_undefineds(struct obj_file *f)
+static int obj_check_undefineds(struct obj_file *f)
{
unsigned long i;
int ret = 1;
@@ -2234,7 +2868,9 @@ int obj_check_undefineds(struct obj_file *f)
sym->secidx = SHN_ABS;
sym->value = 0;
} else {
- errorMsg("unresolved symbol %s", sym->name);
+ if (!flag_quiet) {
+ error_msg("unresolved symbol %s", sym->name);
+ }
ret = 0;
}
}
@@ -2243,7 +2879,7 @@ int obj_check_undefineds(struct obj_file *f)
return ret;
}
-void obj_allocate_commons(struct obj_file *f)
+static void obj_allocate_commons(struct obj_file *f)
{
struct common_entry {
struct common_entry *next;
@@ -2341,14 +2977,18 @@ void obj_allocate_commons(struct obj_file *f)
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;
}
}
}
-unsigned long obj_load_size(struct obj_file *f)
+static unsigned long obj_load_size(struct obj_file *f)
{
unsigned long dot = 0;
struct obj_section *sec;
@@ -2369,7 +3009,7 @@ unsigned long obj_load_size(struct obj_file *f)
return dot;
}
-int obj_relocate(struct obj_file *f, ElfW(Addr) base)
+static int obj_relocate(struct obj_file *f, ElfW(Addr) base)
{
int i, n = f->header.e_shnum;
int ret = 1;
@@ -2457,11 +3097,11 @@ int obj_relocate(struct obj_file *f, ElfW(Addr) base)
errmsg = "Unhandled relocation";
bad_reloc:
if (extsym) {
- errorMsg("%s of type %ld for %s", errmsg,
+ error_msg("%s of type %ld for %s", errmsg,
(long) ELFW(R_TYPE) (rel->r_info),
strtab + extsym->st_name);
} else {
- errorMsg("%s of type %ld", errmsg,
+ error_msg("%s of type %ld", errmsg,
(long) ELFW(R_TYPE) (rel->r_info));
}
ret = 0;
@@ -2499,7 +3139,7 @@ int obj_relocate(struct obj_file *f, ElfW(Addr) base)
return ret;
}
-int obj_create_image(struct obj_file *f, char *image)
+static int obj_create_image(struct obj_file *f, char *image)
{
struct obj_section *sec;
ElfW(Addr) base = f->baseaddr;
@@ -2507,7 +3147,7 @@ int obj_create_image(struct obj_file *f, char *image)
for (sec = f->load_order; sec; sec = sec->load_next) {
char *secimg;
- if (sec->header.sh_size == 0)
+ if (sec->contents == 0 || sec->header.sh_size == 0)
continue;
secimg = image + (sec->header.sh_addr - base);
@@ -2521,7 +3161,7 @@ int obj_create_image(struct obj_file *f, char *image)
/*======================================================================*/
-struct obj_file *obj_load(FILE * fp)
+static struct obj_file *obj_load(FILE * fp, int loadprogbits)
{
struct obj_file *f;
ElfW(Shdr) * section_headers;
@@ -2538,7 +3178,7 @@ struct obj_file *obj_load(FILE * fp)
fseek(fp, 0, SEEK_SET);
if (fread(&f->header, sizeof(f->header), 1, fp) != 1) {
- errorMsg("error reading ELF header: %s", strerror(errno));
+ perror_msg("error reading ELF header");
return NULL;
}
@@ -2546,25 +3186,25 @@ struct obj_file *obj_load(FILE * fp)
|| f->header.e_ident[EI_MAG1] != ELFMAG1
|| f->header.e_ident[EI_MAG2] != ELFMAG2
|| f->header.e_ident[EI_MAG3] != ELFMAG3) {
- errorMsg("not an ELF file");
+ 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)) {
- errorMsg("ELF file not for this architecture");
+ error_msg("ELF file not for this architecture");
return NULL;
}
if (f->header.e_type != ET_REL) {
- errorMsg("ELF file not a relocatable object");
+ error_msg("ELF file not a relocatable object");
return NULL;
}
/* Read the section headers. */
if (f->header.e_shentsize != sizeof(ElfW(Shdr))) {
- errorMsg("section header size mismatch: %lu != %lu",
+ error_msg("section header size mismatch: %lu != %lu",
(unsigned long) f->header.e_shentsize,
(unsigned long) sizeof(ElfW(Shdr)));
return NULL;
@@ -2577,7 +3217,7 @@ struct obj_file *obj_load(FILE * fp)
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) {
- errorMsg("error reading ELF section headers: %s", strerror(errno));
+ perror_msg("error reading ELF section headers");
return NULL;
}
@@ -2592,7 +3232,7 @@ struct obj_file *obj_load(FILE * fp)
sec->header = section_headers[i];
sec->idx = i;
- switch (sec->header.sh_type) {
+ if(sec->header.sh_size) switch (sec->header.sh_type) {
case SHT_NULL:
case SHT_NOTE:
case SHT_NOBITS:
@@ -2600,6 +3240,12 @@ struct obj_file *obj_load(FILE * fp)
break;
case SHT_PROGBITS:
+#if LOADBITS
+ if (!loadprogbits) {
+ sec->contents = NULL;
+ break;
+ }
+#endif
case SHT_SYMTAB:
case SHT_STRTAB:
case SHT_RELM:
@@ -2607,7 +3253,7 @@ struct obj_file *obj_load(FILE * fp)
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) {
- errorMsg("error reading ELF section data: %s", strerror(errno));
+ perror_msg("error reading ELF section data");
return NULL;
}
} else {
@@ -2617,11 +3263,11 @@ struct obj_file *obj_load(FILE * fp)
#if SHT_RELM == SHT_REL
case SHT_RELA:
- errorMsg("RELA relocations not supported on this architecture");
+ error_msg("RELA relocations not supported on this architecture");
return NULL;
#else
case SHT_REL:
- errorMsg("REL relocations not supported on this architecture");
+ error_msg("REL relocations not supported on this architecture");
return NULL;
#endif
@@ -2634,7 +3280,7 @@ struct obj_file *obj_load(FILE * fp)
break;
}
- errorMsg("can't handle sections of type %ld",
+ error_msg("can't handle sections of type %ld",
(long) sec->header.sh_type);
return NULL;
}
@@ -2652,6 +3298,12 @@ struct obj_file *obj_load(FILE * fp)
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);
@@ -2663,7 +3315,7 @@ struct obj_file *obj_load(FILE * fp)
ElfW(Sym) * sym;
if (sec->header.sh_entsize != sizeof(ElfW(Sym))) {
- errorMsg("symbol size mismatch: %lu != %lu",
+ error_msg("symbol size mismatch: %lu != %lu",
(unsigned long) sec->header.sh_entsize,
(unsigned long) sizeof(ElfW(Sym)));
return NULL;
@@ -2675,38 +3327,72 @@ struct obj_file *obj_load(FILE * fp)
/* Allocate space for a table of local symbols. */
j = f->local_symtab_size = sec->header.sh_info;
- f->local_symtab = xmalloc(j *=
- sizeof(struct obj_symbol *));
- memset(f->local_symtab, 0, j);
+ 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
+ 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))) {
- errorMsg("relocation entry size mismatch: %lu != %lu",
+ 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[] = {
@@ -2725,6 +3411,117 @@ static void hide_special_symbols(struct obj_file *f)
ELFW(ST_INFO) (STB_LOCAL, ELFW(ST_TYPE) (sym->info));
}
+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));
+ }
+}
+
+/* Check if loading this module will taint the kernel. */
+static void check_tainted_module(struct obj_file *f, char *m_name)
+{
+ 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);
+}
void my_usage(void)
{
@@ -2742,18 +3539,16 @@ extern int insmod_main( int argc, char **argv)
ElfW(Addr) m_addr;
FILE *fp;
struct obj_file *f;
- char m_name[BUFSIZ + 1] = "\0";
- int exit_status = FALSE;
+ char m_name[FILENAME_MAX] = "\0";
+ int exit_status = EXIT_FAILURE;
int m_has_modinfo;
#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
- int k_version;
- char k_strversion[STRVERSIONLEN];
+ struct utsname uts_info;
char m_strversion[STRVERSIONLEN];
int m_version;
int m_crcs;
#endif
-
if (argc <= 1)
my_usage();
@@ -2773,7 +3568,7 @@ extern int insmod_main( int argc, char **argv)
strcpy(m_fullName, m_name);
strcat(m_fullName, ".o");
- /* Get a filedesc for the module */
+ /* 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;
@@ -2781,7 +3576,7 @@ extern int insmod_main( int argc, char **argv)
memcpy(m_filename, *argv, strlen(*argv));
- if ((f = obj_load(fp)) == NULL) {
+ if ((f = obj_load(fp, LOADBITS)) == NULL) {
logperror("Could not load the module");
goto out;
}
@@ -2793,31 +3588,33 @@ extern int insmod_main( int argc, char **argv)
#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
/* Version correspondence? */
-
- k_version = get_kernel_version(k_strversion);
- 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) {
- errorMsg("couldn't find the kernel version the module was "
- "compiled for");
- goto out;
+ 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(k_strversion, m_strversion, STRVERSIONLEN) != 0) {
- if (flag_force_load) {
- errorMsg("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, k_strversion);
- } else {
- errorMsg("kernel-module version mismatch\n"
- "\t%s was compiled for kernel version %s\n"
- "\twhile this kernel is version %s.",
- m_filename, m_strversion, k_strversion);
- 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;
@@ -2826,21 +3623,21 @@ extern int insmod_main( int argc, char **argv)
k_new_syscalls = !query_module(NULL, 0, NULL, 0, NULL);
if (k_new_syscalls) {
-#ifdef BB_FEATURE_INSMOD_NEW_KERNEL
+#ifdef BB_FEATURE_NEW_MODULE_INTERFACE
if (!new_get_kernel_symbols())
goto out;
k_crcs = new_is_kernel_checksummed();
#else
- errorMsg("Not configured to support new kernels");
+ error_msg("Not configured to support new kernels");
goto out;
#endif
} else {
-#ifdef BB_FEATURE_INSMOD_OLD_KERNEL
+#ifdef BB_FEATURE_OLD_MODULE_INTERFACE
if (!old_get_kernel_symbols(m_name))
goto out;
k_crcs = old_is_kernel_checksummed();
#else
- errorMsg("Not configured to support old kernels");
+ error_msg("Not configured to support old kernels");
goto out;
#endif
}
@@ -2871,12 +3668,18 @@ extern int insmod_main( int argc, char **argv)
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;
+ /* done with the module name, on to the optional var=value arguments */
+ ++optind;
+
+ if (optind < argc) {
+ if (m_has_modinfo
+ ? !new_process_module_arguments(f, argc - optind, argv + optind)
+ : !old_process_module_arguments(f, argc - optind, argv + optind))
+ {
+ goto out;
+ }
}
arch_create_got(f);
@@ -2889,25 +3692,31 @@ extern int insmod_main( int argc, char **argv)
m_size = obj_load_size(f);
- errno = 0;
m_addr = create_module(m_name, m_size);
- switch (errno) {
- case 0:
- break;
+ if (m_addr==-1) switch (errno) {
case EEXIST:
- errorMsg("A module named %s already exists", m_name);
- /* Considered as a success in stage1 */
- fclose(fp);
- return(TRUE);
+ error_msg("A module named %s already exists", m_name);
+ goto out;
case ENOMEM:
- errorMsg("Can't allocate kernel memory for module; needed %lu bytes",
+ error_msg("Can't allocate kernel memory for module; needed %lu bytes",
m_size);
goto out;
default:
- errorMsg("create_module: %s: %s", m_name, strerror(errno));
+ 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;
@@ -2921,14 +3730,13 @@ extern int insmod_main( int argc, char **argv)
goto out;
}
- exit_status = TRUE;
+ exit_status = EXIT_SUCCESS;
out:
fclose(fp);
return(exit_status);
}
-
int insmod_call(char * full_filename, char * params)
{
int argc = 2;