* 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 CONFIG_USE_xxx_ENTRIES...
+ * Did some cleanup and added USE_xxx_ENTRIES...
*
* Quinn Jensen <jensenq@lineo.com> added MIPS support 23-Feb-2001.
* based on modutils-2.4.2
* 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
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#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 <getopt.h>
-#include <fcntl.h>
+#include "libbb.h"
+#include <libgen.h>
#include <sys/utsname.h>
-#include "busybox.h"
-#if !defined(CONFIG_FEATURE_2_4_MODULES) && \
- !defined(CONFIG_FEATURE_2_6_MODULES)
-#define CONFIG_FEATURE_2_4_MODULES
+#if !ENABLE_FEATURE_2_4_MODULES && !ENABLE_FEATURE_2_6_MODULES
+#undef ENABLE_FEATURE_2_4_MODULES
+#define ENABLE_FEATURE_2_4_MODULES 1
#endif
-#if !defined(CONFIG_FEATURE_2_4_MODULES)
-#define insmod_ng_main insmod_main
-#endif
+/*
+ * Big piece of 2.4-specific code
+ */
+#if ENABLE_FEATURE_2_4_MODULES
-#if defined(CONFIG_FEATURE_2_6_MODULES)
-extern int insmod_ng_main( int argc, char **argv);
+#if ENABLE_FEATURE_2_6_MODULES
+static int insmod_ng_main(int argc, char **argv);
#endif
-
-#if defined(CONFIG_FEATURE_2_4_MODULES)
-
-
-#ifdef CONFIG_FEATURE_INSMOD_LOADINKMEM
+#if ENABLE_FEATURE_INSMOD_LOADINKMEM
#define LOADBITS 0
#else
#define LOADBITS 1
#endif
-
/* Alpha */
#if defined(__alpha__)
#define MATCH_MACHINE(x) (x == EM_ALPHA)
#define SHT_RELM SHT_REL
#define Elf32_RelM Elf32_Rel
#define ELFCLASSM ELFCLASS32
-#define CONFIG_USE_PLT_ENTRIES
-#define CONFIG_PLT_ENTRY_SIZE 8
-#define CONFIG_USE_GOT_ENTRIES
-#define CONFIG_GOT_ENTRY_SIZE 8
-#define CONFIG_USE_SINGLE
+#define USE_PLT_ENTRIES
+#define PLT_ENTRY_SIZE 8
+#define USE_GOT_ENTRIES
+#define GOT_ENTRY_SIZE 8
+#define USE_SINGLE
+#endif
+
+/* blackfin */
+#if defined(BFIN)
+#define MATCH_MACHINE(x) (x == EM_BLACKFIN)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
+#define ELFCLASSM ELFCLASS32
#endif
/* CRIS */
#define SHT_RELM SHT_RELA
#define Elf32_RelM Elf32_Rela
#define ELFCLASSM ELFCLASS32
-#define CONFIG_USE_SINGLE
+#define USE_SINGLE
#define SYMBOL_PREFIX "_"
#endif
#define SHT_RELM SHT_REL
#define Elf32_RelM Elf32_Rel
#define ELFCLASSM ELFCLASS32
-#define CONFIG_USE_GOT_ENTRIES
-#define CONFIG_GOT_ENTRY_SIZE 4
-#define CONFIG_USE_SINGLE
+#define USE_GOT_ENTRIES
+#define GOT_ENTRY_SIZE 4
+#define USE_SINGLE
#endif
/* IA64, aka Itanium */
#define SHT_RELM SHT_RELA
#define Elf32_RelM Elf32_Rela
#define ELFCLASSM ELFCLASS32
-#define CONFIG_USE_GOT_ENTRIES
-#define CONFIG_GOT_ENTRY_SIZE 4
-#define CONFIG_USE_SINGLE
+#define USE_GOT_ENTRIES
+#define GOT_ENTRY_SIZE 4
+#define USE_SINGLE
+#endif
+
+/* Microblaze */
+#if defined(__microblaze__)
+#define USE_SINGLE
+#include <linux/elf-em.h>
+#define MATCH_MACHINE(x) (x == EM_XILINX_MICROBLAZE)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
+#define ELFCLASSM ELFCLASS32
#endif
/* MIPS */
#define SHT_RELM SHT_RELA
#define Elf32_RelM Elf32_Rela
#define ELFCLASSM ELFCLASS32
-#define CONFIG_USE_PLT_ENTRIES
-#define CONFIG_PLT_ENTRY_SIZE 16
-#define CONFIG_USE_PLT_LIST
-#define CONFIG_LIST_ARCHTYPE ElfW(Addr)
-#define CONFIG_USE_LIST
+#define USE_PLT_ENTRIES
+#define PLT_ENTRY_SIZE 16
+#define USE_PLT_LIST
+#define LIST_ARCHTYPE ElfW(Addr)
+#define USE_LIST
#define ARCHDATAM "__ftr_fixup"
#endif
#define SHT_RELM SHT_RELA
#define Elf32_RelM Elf32_Rela
#define ELFCLASSM ELFCLASS32
-#define CONFIG_USE_PLT_ENTRIES
-#define CONFIG_PLT_ENTRY_SIZE 8
-#define CONFIG_USE_GOT_ENTRIES
-#define CONFIG_GOT_ENTRY_SIZE 8
-#define CONFIG_USE_SINGLE
+#define USE_PLT_ENTRIES
+#define PLT_ENTRY_SIZE 8
+#define USE_GOT_ENTRIES
+#define GOT_ENTRY_SIZE 8
+#define USE_SINGLE
#endif
/* SuperH */
#define SHT_RELM SHT_RELA
#define Elf32_RelM Elf32_Rela
#define ELFCLASSM ELFCLASS32
-#define CONFIG_USE_GOT_ENTRIES
-#define CONFIG_GOT_ENTRY_SIZE 4
-#define CONFIG_USE_SINGLE
+#define USE_GOT_ENTRIES
+#define GOT_ENTRY_SIZE 4
+#define USE_SINGLE
/* the SH changes have only been tested in =little endian= mode */
/* I'm not sure about big endian, so let's warn: */
-#if defined(__sh__) && defined(__BIG_ENDIAN__)
-#error insmod.c may require changes for use on big endian SH
+#if defined(__sh__) && BB_BIG_ENDIAN
+# error insmod.c may require changes for use on big endian SH
#endif
/* it may or may not work on the SH1/SH2... Error on those also */
#if ((!(defined(__SH3__) || defined(__SH4__) || defined(__SH5__)))) && (defined(__sh__))
#endif
/* v850e */
-#if defined (__v850e__)
+#if defined(__v850e__)
#define MATCH_MACHINE(x) ((x) == EM_V850 || (x) == EM_CYGNUS_V850)
#define SHT_RELM SHT_RELA
#define Elf32_RelM Elf32_Rela
#define ELFCLASSM ELFCLASS32
-#define CONFIG_USE_PLT_ENTRIES
-#define CONFIG_PLT_ENTRY_SIZE 8
-#define CONFIG_USE_SINGLE
+#define USE_PLT_ENTRIES
+#define PLT_ENTRY_SIZE 8
+#define USE_SINGLE
#ifndef EM_CYGNUS_V850 /* grumble */
#define EM_CYGNUS_V850 0x9080
#endif
#if defined(__x86_64__)
#define MATCH_MACHINE(x) (x == EM_X86_64)
#define SHT_RELM SHT_RELA
-#define CONFIG_USE_GOT_ENTRIES
-#define CONFIG_GOT_ENTRY_SIZE 8
-#define CONFIG_USE_SINGLE
+#define USE_GOT_ENTRIES
+#define GOT_ENTRY_SIZE 8
+#define USE_SINGLE
#define Elf64_RelM Elf64_Rela
#define ELFCLASSM ELFCLASS64
#endif
#ifndef MODUTILS_MODULE_H
-static const int MODUTILS_MODULE_H = 1;
-
-#ident "$Id: insmod.c,v 1.126 2004/12/26 09:13:32 vapier Exp $"
/*======================================================================*/
/* For sizeof() which are related to the module platform and not to the
#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;
+enum {
+ tgt_sizeof_long = 8,
+ tgt_sizeof_char_p = 8,
+ 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
-{
+struct new_module_symbol {
unsigned long value;
unsigned long name;
};
struct new_module_persist;
-struct new_module_ref
-{
+struct new_module_ref {
unsigned tgt_long dep; /* kernel addresses */
unsigned tgt_long ref;
unsigned tgt_long next_ref;
};
-struct new_module
-{
+struct new_module {
unsigned tgt_long size_of_struct; /* == sizeof(module) */
unsigned tgt_long next;
unsigned tgt_long name;
#define KALLSYMS_SEC_NAME "__kallsyms"
-struct new_module_info
-{
+struct new_module_info {
unsigned long addr;
unsigned long size;
unsigned long flags;
};
/* 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;
+enum {
+ NEW_MOD_RUNNING = 1,
+ NEW_MOD_DELETED = 2,
+ NEW_MOD_AUTOCLEAN = 4,
+ NEW_MOD_VISITED = 8,
+ NEW_MOD_USED_ONCE = 16
+};
int 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;
+enum {
+ QM_MODULES = 1,
+ QM_DEPS = 2,
+ QM_REFS = 3,
+ QM_SYMBOLS = 4,
+ 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 *);
+int delete_module(const char *module, unsigned int flags);
#endif /* module.h */
#ifndef MODUTILS_OBJ_H
-static const int MODUTILS_OBJ_H = 1;
-
-#ident "$Id: insmod.c,v 1.126 2004/12/26 09:13:32 vapier Exp $"
/* 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 HASH_BUCKETS 521
-struct obj_file
-{
+struct obj_file {
ElfW(Ehdr) header;
ElfW(Addr) baseaddr;
struct obj_section **sections;
struct obj_symbol *symtab[HASH_BUCKETS];
};
-enum obj_reloc
-{
+enum obj_reloc {
obj_reloc_ok,
obj_reloc_overflow,
obj_reloc_dangerous,
obj_reloc_unhandled
};
-struct obj_string_patch
-{
+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 {
struct obj_symbol_patch *next;
int reloc_secidx;
ElfW(Addr) reloc_offset;
static unsigned long obj_elf_hash_n(const char *, unsigned long len);
-static struct obj_symbol *obj_find_symbol (struct obj_file *f,
+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 CONFIG_FEATURE_INSMOD_VERSION_CHECKING
+#if ENABLE_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,
+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,
+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,
+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,
+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 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,
+static void obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
const char *string);
-static int obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
+static void obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
struct obj_symbol *sym);
-static int obj_check_undefineds(struct obj_file *f);
+static void 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 unsigned long obj_load_size(struct obj_file *f);
-static int obj_relocate (struct obj_file *f, ElfW(Addr) base);
+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);
+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_file *arch_new_file(void);
-static struct obj_section *arch_new_section (void);
+static struct obj_section *arch_new_section(void);
-static struct obj_symbol *arch_new_symbol (void);
+static struct obj_symbol *arch_new_symbol(void);
-static 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_section *symsec,*/
struct obj_symbol *sym,
ElfW(RelM) *rel, ElfW(Addr) value);
-static void arch_create_got (struct obj_file *f);
-
+static void arch_create_got(struct obj_file *f);
+#if ENABLE_FEATURE_CHECK_TAINTED_MODULE
static int obj_gpl_license(struct obj_file *f, const char **license);
-
+#endif /* FEATURE_CHECK_TAINTED_MODULE */
#endif /* obj.h */
//----------------------------------------------------------------------------
//--------end of modutils obj.h
#define SPFX ""
#endif
-
-#define _PATH_MODULES "/lib/modules"
-static const int STRVERSIONLEN = 32;
+enum { STRVERSIONLEN = 64 };
/*======================================================================*/
-static int flag_force_load = 0;
-static int flag_autoclean = 0;
-static int flag_verbose = 0;
-static int flag_quiet = 0;
-static int flag_export = 1;
-
+#define OPTION_STR "sLo:fkvqx" USE_FEATURE_INSMOD_LOAD_MAP("m")
+enum {
+ OPT_s = 0x1, // -s /* log to syslog */
+ /* Not supported but kernel needs this for request_module(),
+ as this calls: modprobe -k -s -- <module>
+ so silently ignore this flag */
+ OPT_L = 0x2, // -L /* Stub warning */
+ /* Compatibility with modprobe.
+ In theory, this does locking, but we don't do
+ that. So be careful and plan your life around not
+ loading the same module 50 times concurrently. */
+ OPT_o = 0x4, // -o /* name the output module */
+ OPT_f = 0x8, // -f /* force loading */
+ OPT_k = 0x10, // -k /* module loaded by kerneld, auto-cleanable */
+ OPT_v = 0x20, // -v /* verbose output */
+ OPT_q = 0x40, // -q /* silent */
+ OPT_x = 0x80, // -x /* do not export externs */
+ OPT_m = 0x100, // -m /* print module load map */
+};
+#define flag_force_load (option_mask32 & OPT_f)
+#define flag_autoclean (option_mask32 & OPT_k)
+#define flag_verbose (option_mask32 & OPT_v)
+#define flag_quiet (option_mask32 & OPT_q)
+#define flag_noexport (option_mask32 & OPT_x)
+#if ENABLE_FEATURE_INSMOD_LOAD_MAP
+#define flag_print_load_map (option_mask32 & OPT_m)
+#else
+#define flag_print_load_map 0
+#endif
/*======================================================================*/
-#if defined(CONFIG_USE_LIST)
+#if defined(USE_LIST)
struct arch_list_entry
{
struct arch_list_entry *next;
- CONFIG_LIST_ARCHTYPE addend;
+ LIST_ARCHTYPE addend;
int offset;
int inited : 1;
};
#endif
-#if defined(CONFIG_USE_SINGLE)
+#if defined(USE_SINGLE)
struct arch_single_entry
{
struct arch_file {
struct obj_file root;
-#if defined(CONFIG_USE_PLT_ENTRIES)
+#if defined(USE_PLT_ENTRIES)
struct obj_section *plt;
#endif
-#if defined(CONFIG_USE_GOT_ENTRIES)
+#if defined(USE_GOT_ENTRIES)
struct obj_section *got;
#endif
#if defined(__mips__)
struct arch_symbol {
struct obj_symbol root;
-#if defined(CONFIG_USE_PLT_ENTRIES)
-#if defined(CONFIG_USE_PLT_LIST)
+#if defined(USE_PLT_ENTRIES)
+#if defined(USE_PLT_LIST)
struct arch_list_entry *pltent;
#else
struct arch_single_entry pltent;
#endif
#endif
-#if defined(CONFIG_USE_GOT_ENTRIES)
+#if defined(USE_GOT_ENTRIES)
struct arch_single_entry gotent;
#endif
};
static struct external_module *ext_modules;
static int n_ext_modules;
static int n_ext_modules_used;
-extern int delete_module(const char *);
static char *m_filename;
static char *m_fullName;
-
/*======================================================================*/
-static int check_module_name_match(const char *filename, struct stat *statbuf,
- void *userdata)
+static int FAST_FUNC check_module_name_match(const char *filename,
+ struct stat *statbuf UNUSED_PARAM,
+ void *userdata, int depth UNUSED_PARAM)
{
char *fullname = (char *) userdata;
+ char *tmp;
if (fullname[0] == '\0')
- return (FALSE);
- else {
- char *tmp, *tmp1 = bb_xstrdup(filename);
- tmp = bb_get_last_path_component(tmp1);
- if (strcmp(tmp, fullname) == 0) {
- free(tmp1);
- /* Stop searching if we find a match */
- m_filename = bb_xstrdup(filename);
- return (FALSE);
- }
- free(tmp1);
+ return FALSE;
+
+ tmp = bb_get_last_path_component_nostrip(filename);
+ if (strcmp(tmp, fullname) == 0) {
+ /* Stop searching if we find a match */
+ m_filename = xstrdup(filename);
+ return FALSE;
}
- return (TRUE);
+ return TRUE;
}
static struct obj_file *arch_new_file(void)
{
struct arch_file *f;
- f = xmalloc(sizeof(*f));
-
- memset(f, 0, sizeof(*f));
-
- return &f->root;
+ f = xzalloc(sizeof(*f));
+ return &f->root; /* it's a first member */
}
static struct obj_section *arch_new_section(void)
{
- return xmalloc(sizeof(struct obj_section));
+ return xzalloc(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));
-
+ sym = xzalloc(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 obj_section *targsec,
+ /*struct obj_section *symsec,*/
+ struct obj_symbol *sym,
+ ElfW(RelM) *rel, ElfW(Addr) v)
{
+#if defined(__arm__) || defined(__i386__) || defined(__mc68000__) \
+ || defined(__sh__) || defined(__s390__) || defined(__x86_64__)
struct arch_file *ifile = (struct arch_file *) f;
+#endif
enum obj_reloc ret = obj_reloc_ok;
ElfW(Addr) *loc = (ElfW(Addr) *) (targsec->contents + rel->r_offset);
+#if defined(__arm__) || defined(__H8300H__) || defined(__H8300S__) \
+ || defined(__i386__) || defined(__mc68000__) || defined(__microblaze__) \
+ || defined(__mips__) || defined(__nios2__) || defined(__powerpc__) \
+ || defined(__s390__) || defined(__sh__) || defined(__x86_64__)
ElfW(Addr) dot = targsec->header.sh_addr + rel->r_offset;
-#if defined(CONFIG_USE_GOT_ENTRIES) || defined(CONFIG_USE_PLT_ENTRIES)
+#endif
+#if defined(USE_GOT_ENTRIES) || defined(USE_PLT_ENTRIES)
struct arch_symbol *isym = (struct arch_symbol *) sym;
#endif
-#if defined(CONFIG_USE_GOT_ENTRIES)
+#if defined(__arm__) || defined(__i386__) || defined(__mc68000__) \
+ || defined(__sh__) || defined(__s390__)
+#if defined(USE_GOT_ENTRIES)
ElfW(Addr) got = ifile->got ? ifile->got->header.sh_addr : 0;
#endif
-#if defined(CONFIG_USE_PLT_ENTRIES)
+#endif
+#if defined(USE_PLT_ENTRIES)
ElfW(Addr) plt = ifile->plt ? ifile->plt->header.sh_addr : 0;
unsigned long *ip;
-# if defined(CONFIG_USE_PLT_LIST)
+# if defined(USE_PLT_LIST)
struct arch_list_entry *pe;
# else
struct arch_single_entry *pe;
* (which is .got) similar to branch,
* but is full 32 bits relative */
- assert(got);
*loc += got - dot;
break;
goto bb_use_plt;
case R_ARM_GOTOFF: /* address relative to the got */
- assert(got);
*loc += v - got;
break;
case R_386_PLT32:
case R_386_PC32:
+ case R_386_GOTOFF:
*loc += v - dot;
break;
break;
case R_386_GOTPC:
- assert(got != 0);
*loc += got - dot;
break;
case R_386_GOT32:
goto bb_use_got;
+ break;
- case R_386_GOTOFF:
- assert(got != 0);
- *loc += v - got;
+#elif defined(__microblaze__)
+ case R_MICROBLAZE_NONE:
+ case R_MICROBLAZE_64_NONE:
+ case R_MICROBLAZE_32_SYM_OP_SYM:
+ case R_MICROBLAZE_32_PCREL:
+ break;
+
+ case R_MICROBLAZE_64_PCREL: {
+ /* dot is the address of the current instruction.
+ * v is the target symbol address.
+ * So we need to extract the offset in the code,
+ * adding v, then subtrating the current address
+ * of this instruction.
+ * Ex: "IMM 0xFFFE bralid 0x0000" = "bralid 0xFFFE0000"
+ */
+
+ /* Get split offset stored in code */
+ unsigned int temp = (loc[0] & 0xFFFF) << 16 |
+ (loc[1] & 0xFFFF);
+
+ /* Adjust relative offset. -4 adjustment required
+ * because dot points to the IMM insn, but branch
+ * is computed relative to the branch instruction itself.
+ */
+ temp += v - dot - 4;
+
+ /* Store back into code */
+ loc[0] = (loc[0] & 0xFFFF0000) | temp >> 16;
+ loc[1] = (loc[1] & 0xFFFF0000) | (temp & 0xFFFF);
+
+ break;
+ }
+
+ case R_MICROBLAZE_32:
+ *loc += v;
+ break;
+
+ case R_MICROBLAZE_64: {
+ /* Get split pointer stored in code */
+ unsigned int temp1 = (loc[0] & 0xFFFF) << 16 |
+ (loc[1] & 0xFFFF);
+
+ /* Add reloc offset */
+ temp1+=v;
+
+ /* Store back into code */
+ loc[0] = (loc[0] & 0xFFFF0000) | temp1 >> 16;
+ loc[1] = (loc[1] & 0xFFFF0000) | (temp1 & 0xFFFF);
+
+ break;
+ }
+
+ case R_MICROBLAZE_32_PCREL_LO:
+ case R_MICROBLAZE_32_LO:
+ case R_MICROBLAZE_SRO32:
+ case R_MICROBLAZE_SRW32:
+ ret = obj_reloc_unhandled;
break;
#elif defined(__mc68000__)
# ifdef R_68K_GOTOFF
case R_68K_GOTOFF:
- assert(got != 0);
*loc += v - got;
break;
# endif
/* 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 = xmalloc(sizeof *n);
n->addr = loc;
n->value = v;
n->next = ifile->mips_hi16_list;
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. */
}
break;
+#elif defined(__powerpc64__)
+ /* PPC64 needs a 2.6 kernel, 2.4 module relocation irrelevant */
+
#elif defined(__powerpc__)
case R_PPC_ADDR16_HA:
case R_390_PLT32:
case R_390_PLT16DBL:
/* find the plt entry and initialize it. */
- assert(isym != NULL);
pe = (struct arch_single_entry *) &isym->pltent;
- assert(pe->allocated);
if (pe->inited == 0) {
ip = (unsigned long *)(ifile->plt->contents + pe->offset);
ip[0] = 0x0d105810; /* basr 1,0; lg 1,10(1); br 1 */
break;
case R_390_GOTPC:
- assert(got != 0);
*(unsigned long *) loc += got - dot;
break;
case R_390_GOT12:
case R_390_GOT16:
case R_390_GOT32:
- assert(isym != NULL);
- assert(got != 0);
if (!isym->gotent.inited)
{
isym->gotent.inited = 1;
# define R_390_GOTOFF32 R_390_GOTOFF
# endif
case R_390_GOTOFF32:
- assert(got != 0);
*loc += v - got;
break;
break;
case R_SH_GOTPC:
- assert(got != 0);
*loc = got - dot + rel->r_addend;
break;
goto bb_use_got;
case R_SH_GOTOFF:
- assert(got != 0);
*loc = v - got;
break;
}
# endif /* __SH5__ */
-#elif defined (__v850e__)
+#elif defined(__v850e__)
case R_V850_NONE:
break;
case R_X86_64_GOTPCREL:
goto bb_use_got;
# if 0
- assert(isym != NULL);
if (!isym->gotent.reloc_done)
{
isym->gotent.reloc_done = 1;
ret = obj_reloc_unhandled;
break;
-#if defined(CONFIG_USE_PLT_ENTRIES)
+#if defined(USE_PLT_ENTRIES)
bb_use_plt:
/* find the plt entry and initialize it if necessary */
- assert(isym != NULL);
-#if defined(CONFIG_USE_PLT_LIST)
+#if defined(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
ip[2] = 0x7d6903a6; /* mtctr r11 */
ip[3] = 0x4e800420; /* bctr */
#endif
-#if defined (__v850e__)
+#if defined(__v850e__)
/* We have to trash a register, so we assume that any control
transfer more than 21-bits away must be a function call
(so we can use a call-clobbered register). */
/* relative distance to target */
v -= dot;
/* if the target is too far away.... */
-#if defined (__arm__) || defined (__powerpc__)
+#if defined(__arm__) || defined(__powerpc__)
if ((int)v < -0x02000000 || (int)v >= 0x02000000)
-#elif defined (__v850e__)
+#elif defined(__v850e__)
if ((ElfW(Sword))v > 0x1fffff || (ElfW(Sword))v < (ElfW(Sword))-0x200000)
#endif
/* go via the plt */
v = plt + pe->offset - dot;
-#if defined (__v850e__)
+#if defined(__v850e__)
if (v & 1)
#else
if (v & 3)
#if defined(__powerpc__)
*loc = (*loc & ~0x03fffffc) | (v & 0x03fffffc);
#endif
-#if defined (__v850e__)
+#if defined(__v850e__)
/* We write two shorts instead of a long because even 32-bit insns
only need half-word alignment, but the 32-bit data write needs
to be long-word aligned. */
(v & 0xffff); /* offs low part */
#endif
break;
-#endif /* CONFIG_USE_PLT_ENTRIES */
+#endif /* USE_PLT_ENTRIES */
-#if defined(CONFIG_USE_GOT_ENTRIES)
+#if defined(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;
#endif
break;
-#endif /* CONFIG_USE_GOT_ENTRIES */
+#endif /* USE_GOT_ENTRIES */
}
return ret;
}
-#if defined(CONFIG_USE_LIST)
+#if defined(USE_LIST)
static int arch_list_add(ElfW(RelM) *rel, struct arch_list_entry **list,
int offset, int size)
#endif
-#if defined(CONFIG_USE_SINGLE)
+#if defined(USE_SINGLE)
-static int arch_single_init(ElfW(RelM) *rel, struct arch_single_entry *single,
+static int arch_single_init(/*ElfW(RelM) *rel,*/ struct arch_single_entry *single,
int offset, int size)
{
if (single->allocated == 0) {
#endif
-#if defined(CONFIG_USE_GOT_ENTRIES) || defined(CONFIG_USE_PLT_ENTRIES)
+#if defined(USE_GOT_ENTRIES) || defined(USE_PLT_ENTRIES)
-static struct obj_section *arch_xsect_init(struct obj_file *f, char *name,
+static struct obj_section *arch_xsect_init(struct obj_file *f, const char *name,
int offset, int size)
{
struct obj_section *myrelsec = obj_find_section(f, name);
} else {
myrelsec = obj_create_alloced_section(f, name,
size, offset);
- assert(myrelsec);
}
return myrelsec;
static void arch_create_got(struct obj_file *f)
{
-#if defined(CONFIG_USE_GOT_ENTRIES) || defined(CONFIG_USE_PLT_ENTRIES)
+#if defined(USE_GOT_ENTRIES) || defined(USE_PLT_ENTRIES)
struct arch_file *ifile = (struct arch_file *) f;
int i;
-#if defined(CONFIG_USE_GOT_ENTRIES)
+#if defined(USE_GOT_ENTRIES)
int got_offset = 0, got_needed = 0, got_allocate;
#endif
-#if defined(CONFIG_USE_PLT_ENTRIES)
+#if defined(USE_PLT_ENTRIES)
int plt_offset = 0, plt_needed = 0, plt_allocate;
#endif
struct obj_section *relsec, *symsec, *strsec;
for (; rel < relend; ++rel) {
extsym = &symtab[ELF_R_SYM(rel->r_info)];
-#if defined(CONFIG_USE_GOT_ENTRIES)
+#if defined(USE_GOT_ENTRIES)
got_allocate = 0;
#endif
-#if defined(CONFIG_USE_PLT_ENTRIES)
+#if defined(USE_PLT_ENTRIES)
plt_allocate = 0;
#endif
switch (ELF_R_TYPE(rel->r_info)) {
#if defined(__arm__)
- case R_ARM_PC24:
- case R_ARM_PLT32:
- plt_allocate = 1;
- break;
+ 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_GOTOFF:
+ case R_ARM_GOTPC:
+ got_needed = 1;
+ continue;
- case R_ARM_GOT32:
- got_allocate = 1;
- break;
+ 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_GOTPC:
+ case R_386_GOTOFF:
+ got_needed = 1;
+ continue;
- case R_386_GOT32:
- got_allocate = 1;
- break;
+ case R_386_GOT32:
+ got_allocate = 1;
+ break;
#elif defined(__powerpc__)
- case R_PPC_REL24:
- plt_allocate = 1;
- break;
+ case R_PPC_REL24:
+ plt_allocate = 1;
+ break;
#elif defined(__mc68000__)
- case R_68K_GOT32:
- got_allocate = 1;
- break;
+ case R_68K_GOT32:
+ got_allocate = 1;
+ break;
#ifdef R_68K_GOTOFF
- case R_68K_GOTOFF:
- got_needed = 1;
- continue;
+ case R_68K_GOTOFF:
+ got_needed = 1;
+ continue;
#endif
#elif defined(__sh__)
- case R_SH_GOT32:
- got_allocate = 1;
- break;
+ case R_SH_GOT32:
+ got_allocate = 1;
+ break;
- case R_SH_GOTPC:
- case R_SH_GOTOFF:
- got_needed = 1;
- continue;
+ case R_SH_GOTPC:
+ case R_SH_GOTOFF:
+ got_needed = 1;
+ continue;
-#elif defined (__v850e__)
- case R_V850_22_PCREL:
- plt_needed = 1;
- break;
+#elif defined(__v850e__)
+ case R_V850_22_PCREL:
+ plt_needed = 1;
+ break;
#endif
- default:
- continue;
+ default:
+ continue;
}
if (extsym->st_name != 0) {
name = f->sections[extsym->st_shndx]->name;
}
intsym = (struct arch_symbol *) obj_find_symbol(f, name);
-#if defined(CONFIG_USE_GOT_ENTRIES)
+#if defined(USE_GOT_ENTRIES)
if (got_allocate) {
got_offset += arch_single_init(
- rel, &intsym->gotent,
- got_offset, CONFIG_GOT_ENTRY_SIZE);
+ /*rel,*/ &intsym->gotent,
+ got_offset, GOT_ENTRY_SIZE);
got_needed = 1;
}
#endif
-#if defined(CONFIG_USE_PLT_ENTRIES)
+#if defined(USE_PLT_ENTRIES)
if (plt_allocate) {
-#if defined(CONFIG_USE_PLT_LIST)
+#if defined(USE_PLT_LIST)
plt_offset += arch_list_add(
rel, &intsym->pltent,
- plt_offset, CONFIG_PLT_ENTRY_SIZE);
+ plt_offset, PLT_ENTRY_SIZE);
#else
plt_offset += arch_single_init(
- rel, &intsym->pltent,
- plt_offset, CONFIG_PLT_ENTRY_SIZE);
+ /*rel,*/ &intsym->pltent,
+ plt_offset, PLT_ENTRY_SIZE);
#endif
plt_needed = 1;
}
}
}
-#if defined(CONFIG_USE_GOT_ENTRIES)
+#if defined(USE_GOT_ENTRIES)
if (got_needed) {
ifile->got = arch_xsect_init(f, ".got", got_offset,
- CONFIG_GOT_ENTRY_SIZE);
+ GOT_ENTRY_SIZE);
}
#endif
-#if defined(CONFIG_USE_PLT_ENTRIES)
+#if defined(USE_PLT_ENTRIES)
if (plt_needed) {
ifile->plt = arch_xsect_init(f, ".plt", plt_offset,
- CONFIG_PLT_ENTRY_SIZE);
+ PLT_ENTRY_SIZE);
}
#endif
-#endif /* defined(CONFIG_USE_GOT_ENTRIES) || defined(CONFIG_USE_PLT_ENTRIES) */
+#endif /* defined(USE_GOT_ENTRIES) || defined(USE_PLT_ENTRIES) */
}
/*======================================================================*/
/* Standard ELF hash function. */
-static inline unsigned long obj_elf_hash_n(const char *name, unsigned long n)
+static unsigned long obj_elf_hash_n(const char *name, unsigned long n)
{
unsigned long h = 0;
unsigned long g;
while (n > 0) {
ch = *name++;
h = (h << 4) + ch;
- if ((g = (h & 0xf0000000)) != 0) {
+ g = (h & 0xf0000000);
+ if (g != 0) {
h ^= g >> 24;
h &= ~g;
}
return obj_elf_hash_n(name, strlen(name));
}
-#ifdef CONFIG_FEATURE_INSMOD_VERSION_CHECKING
+#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
/* String comparison for non-co-versioned kernel and module. */
static int ncv_strcmp(const char *a, const char *b)
}
}
-#endif /* CONFIG_FEATURE_INSMOD_VERSION_CHECKING */
+#endif /* 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)
+ 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 = ELF_ST_TYPE(info);
int n_binding = ELF_ST_BIND(info);
- for (sym = f->symtab[hash]; sym; sym = sym->next)
+ 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;
return sym;
}
}
+ }
/* Completely new symbol. */
sym = arch_new_symbol();
sym->next = f->symtab[hash];
f->symtab[hash] = sym;
sym->ksymidx = -1;
-
- if (ELF_ST_BIND(info) == STB_LOCAL && symidx != -1) {
+ if (ELF_ST_BIND(info) == STB_LOCAL && symidx != (unsigned long)(-1)) {
if (symidx >= f->local_symtab_size)
bb_error_msg("local symbol %s with index %ld exceeds local_symtab_size %ld",
name, (long) symidx, (long) f->local_symtab_size);
return NULL;
}
-static ElfW(Addr)
- obj_symbol_final_value(struct obj_file * f, struct obj_symbol * sym)
+static ElfW(Addr) obj_symbol_final_value(struct obj_file * f, struct obj_symbol * sym)
{
if (sym) {
if (sym->secidx >= SHN_LORESERVE)
}
static struct obj_section *obj_create_alloced_section(struct obj_file *f,
- const char *name,
- unsigned long align,
- unsigned long size)
+ 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 = xrealloc_vector(f->sections, 2, newidx);
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;
}
static struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
- const char *name,
- unsigned long align,
- unsigned long size)
+ 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;
{
unsigned long oldsize = sec->header.sh_size;
if (more) {
- sec->contents = xrealloc(sec->contents, sec->header.sh_size += more);
+ sec->header.sh_size += more;
+ sec->contents = xrealloc(sec->contents, sec->header.sh_size);
}
return sec->contents + oldsize;
}
char *name_buf = 0;
size_t name_alloced_size = 0;
#endif
-#ifdef CONFIG_FEATURE_CHECK_TAINTED_MODULE
+#if ENABLE_FEATURE_CHECK_TAINTED_MODULE
int gpl;
gpl = obj_gpl_license(f, NULL) == 0;
* their references.
*/
if (strncmp((char *)s->name, "GPLONLY_", 8) == 0) {
-#ifdef CONFIG_FEATURE_CHECK_TAINTED_MODULE
+#if ENABLE_FEATURE_CHECK_TAINTED_MODULE
if (gpl)
s->name += 8;
else
kernel exports `C names', but module object files
reference `linker names'). */
size_t extra = sizeof SYMBOL_PREFIX;
- size_t name_size = strlen (name) + extra;
+ size_t name_size = strlen(name) + extra;
if (name_size > name_alloced_size) {
name_alloced_size = name_size * 2;
- name_buf = alloca (name_alloced_size);
+ name_buf = alloca(name_alloced_size);
}
- strcpy (name_buf, SYMBOL_PREFIX);
- strcpy (name_buf + extra - 1, name);
+ strcpy(name_buf, SYMBOL_PREFIX);
+ strcpy(name_buf + extra - 1, name);
name = name_buf;
#endif /* SYMBOL_PREFIX */
if (sym && !(ELF_ST_BIND(sym->info) == STB_LOCAL)) {
#ifdef SYMBOL_PREFIX
/* Put NAME_BUF into more permanent storage. */
- name = xmalloc (name_size);
- strcpy (name, name_buf);
+ name = xmalloc(name_size);
+ strcpy(name, name_buf);
#endif
sym = obj_add_symbol(f, name, -1,
ELF_ST_INFO(STB_GLOBAL,
/* Add module symbols first. */
- for (i = 0, m = ext_modules; i < n_ext_modules; ++i, ++m)
+ 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;
+ && add_symbols_from(f, SHN_HIRESERVE + 2 + i, m->syms, m->nsyms)
+ ) {
+ m->used = 1;
+ ++nused;
+ }
+ }
n_ext_modules_used = nused;
/*======================================================================*/
/* Functions relating to module loading after 2.1.18. */
-static int
+static void
new_process_module_arguments(struct obj_file *f, int argc, char **argv)
{
while (argc > 0) {
int min, max, n;
p = *argv;
- if ((q = strchr(p, '=')) == NULL) {
+ q = strchr(p, '=');
+ if (q == NULL) {
argc--;
continue;
}
p = get_modinfo_value(f, key);
key += 5;
if (p == NULL) {
- bb_error_msg("invalid parameter %s", key);
- return 0;
+ bb_error_msg_and_die("invalid parameter %s", key);
}
#ifdef SYMBOL_PREFIX
- sym_name = alloca (strlen (key) + sizeof SYMBOL_PREFIX);
- strcpy (sym_name, SYMBOL_PREFIX);
- strcat (sym_name, key);
+ sym_name = alloca(strlen(key) + sizeof SYMBOL_PREFIX);
+ strcpy(sym_name, SYMBOL_PREFIX);
+ strcat(sym_name, key);
#else
sym_name = key;
#endif
/* Also check that the parameter was not resolved from the kernel. */
if (sym == NULL || sym->secidx > SHN_HIRESERVE) {
- bb_error_msg("symbol for parameter %s not found", key);
- return 0;
+ bb_error_msg_and_die("symbol for parameter %s not found", key);
}
if (isdigit(*p)) {
str = alloca(strlen(q));
for (r = str, q++; *q != '"'; ++q, ++r) {
- if (*q == '\0') {
- bb_error_msg("improperly terminated string argument for %s",
+ if (*q == '\0')
+ bb_error_msg_and_die("improperly terminated string argument for %s",
key);
- return 0;
- } else if (*q == '\\')
+ 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') {
+ 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';
- if (q[1] >= '0' && q[1] <= '7')
- c = (c * 8) + *++q - '0';
- }
- *r = c;
}
- break;
+ *r = c;
+ }
+ break;
- default:
- *r = *q;
- break;
- } else
+ default:
*r = *q;
+ break;
+ }
+ else
+ *r = *q;
}
*r = '\0';
++q;
} else {
/* last string */
str = q;
- q = "";
+ q = (char*)"";
}
}
obj_string_patch(f, sym->secidx, loc - contents, str);
loc += tgt_sizeof_char_p;
} else {
- /* Array of chars (in fact, matrix !) */
+ /* 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))) {
- bb_error_msg("parameter type 'c' for %s must be followed by"
+ bb_error_msg_and_die("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) {
- bb_error_msg("string too long for %s (max %ld)", key,
+ bb_error_msg_and_die("string too long for %s (max %ld)", key,
charssize - 1);
- return 0;
}
/* Copy to location */
} 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;
+ 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:
- bb_error_msg("unknown parameter type '%c' for %s", *p, key);
- return 0;
+ default:
+ bb_error_msg_and_die("unknown parameter type '%c' for %s", *p, key);
}
}
-
-retry_end_of_value:
+ 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) {
- bb_error_msg("too many values for %s (max %d)", key, max);
- return 0;
- }
- ++q;
- break;
+ case '\0':
+ goto end_of_arg;
+
+ case ' ':
+ case '\t':
+ case '\n':
+ case '\r':
+ ++q;
+ goto retry_end_of_value;
+
+ case ',':
+ if (++n > max) {
+ bb_error_msg_and_die("too many values for %s (max %d)", key, max);
+ }
+ ++q;
+ break;
- default:
- bb_error_msg("invalid argument syntax for %s", key);
- return 0;
+ default:
+ bb_error_msg_and_die("invalid argument syntax for %s", key);
}
}
-
-end_of_arg:
+ end_of_arg:
if (n < min) {
- bb_error_msg("too few values for %s (min %d)", key, min);
- return 0;
+ bb_error_msg_and_die("too few values for %s (min %d)", key, min);
}
- argc--, argv++;
+ argc--;
+ argv++;
}
-
- return 1;
}
-#ifdef CONFIG_FEATURE_INSMOD_VERSION_CHECKING
+#if ENABLE_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;
+ return xatoi(p);
+ return 0;
}
/* Get the module's kernel version in the canonical integer form. */
return a << 16 | b << 8 | c;
}
-#endif /* CONFIG_FEATURE_INSMOD_VERSION_CHECKING */
+#endif /* FEATURE_INSMOD_VERSION_CHECKING */
/* Fetch the loaded modules, and all currently exported symbols. */
-static int new_get_kernel_symbols(void)
+static void new_get_kernel_symbols(void)
{
char *module_names, *mn;
struct external_module *modules, *m;
/* Collect the loaded modules. */
- module_names = xmalloc(bufsize = 256);
-retry_modules_load:
+ bufsize = 256;
+ module_names = xmalloc(bufsize);
+
+ 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);
+ bufsize = ret;
+ module_names = xrealloc(module_names, bufsize);
goto retry_modules_load;
}
- bb_perror_msg("QM_MODULES");
- return 0;
+ bb_perror_msg_and_die("QM_MODULES");
}
n_ext_modules = nmod = ret;
/* Collect the modules' symbols. */
- if (nmod){
+ if (nmod) {
ext_modules = modules = xmalloc(nmod * sizeof(*modules));
memset(modules, 0, nmod * sizeof(*modules));
for (i = 0, mn = module_names, m = modules;
/* The module was removed out from underneath us. */
continue;
}
- bb_perror_msg("query_module: QM_INFO: %s", mn);
- return 0;
+ bb_perror_msg_and_die("query_module: QM_INFO: %s", mn);
}
- syms = xmalloc(bufsize = 1024);
-retry_mod_sym_load:
+ bufsize = 1024;
+ syms = xmalloc(bufsize);
+ retry_mod_sym_load:
if (query_module(mn, QM_SYMBOLS, syms, bufsize, &ret)) {
switch (errno) {
case ENOSPC:
- syms = xrealloc(syms, bufsize = ret);
+ bufsize = ret;
+ syms = xrealloc(syms, bufsize);
goto retry_mod_sym_load;
case ENOENT:
/* The module was removed out from underneath us. */
continue;
default:
- bb_perror_msg("query_module: QM_SYMBOLS: %s", mn);
- return 0;
+ bb_perror_msg_and_die("query_module: QM_SYMBOLS: %s", mn);
}
}
nsyms = ret;
/* Collect the kernel's symbols. */
syms = xmalloc(bufsize = 16 * 1024);
-retry_kern_sym_load:
+ retry_kern_sym_load:
if (query_module(NULL, QM_SYMBOLS, syms, bufsize, &ret)) {
if (errno == ENOSPC && bufsize < ret) {
- syms = xrealloc(syms, bufsize = ret);
+ bufsize = ret;
+ syms = xrealloc(syms, bufsize);
goto retry_kern_sym_load;
}
- bb_perror_msg("kernel: QM_SYMBOLS");
- return 0;
+ bb_perror_msg_and_die("kernel: QM_SYMBOLS");
}
nksyms = nsyms = ret;
ksyms = syms;
for (j = 0, s = syms; j < nsyms; ++j, ++s) {
s->name += (unsigned long) syms;
}
- return 1;
}
}
-static int new_create_this_module(struct obj_file *f, const char *m_name)
+static void new_create_this_module(struct obj_file *f, const char *m_name)
{
struct obj_section *sec;
obj_string_patch(f, sec->idx, offsetof(struct new_module, name),
m_name);
-
- return 1;
}
-#ifdef CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
+#if ENABLE_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
/* add an entry to the __ksymtab section, creating it if necessary */
static void new_add_ksymtab(struct obj_file *f, struct obj_symbol *sym)
{
if (!sec)
return;
sec->header.sh_flags |= SHF_ALLOC;
- sec->header.sh_addralign = tgt_sizeof_void_p; /* Empty section might
- be byte-aligned */
+ /* Empty section might be byte-aligned */
+ sec->header.sh_addralign = tgt_sizeof_void_p;
ofs = sec->header.sh_size;
obj_symbol_patch(f, sec->idx, ofs, sym);
obj_string_patch(f, sec->idx, ofs + tgt_sizeof_void_p, sym->name);
obj_extend_section(sec, 2 * tgt_sizeof_char_p);
}
-#endif /* CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS */
+#endif /* FEATURE_INSMOD_KSYMOOPS_SYMBOLS */
static int new_create_module_ksymtab(struct obj_file *f)
{
}
}
- if (flag_export && !obj_find_section(f, "__ksymtab")) {
+ if (!flag_noexport && !obj_find_section(f, "__ksymtab")) {
size_t nsyms;
int *loaded;
- sec =
- obj_create_alloced_section(f, "__ksymtab", tgt_sizeof_void_p,
- 0);
+ 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
sec = obj_find_section(f, ".this");
if (!sec || !sec->contents) {
- bb_perror_msg_and_die("corrupt module %s?",m_name);
+ bb_perror_msg_and_die("corrupt module %s?", m_name);
}
module = (struct new_module *) sec->contents;
m_addr = sec->header.sh_addr;
/*======================================================================*/
-static int
+static void
obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
const char *string)
{
loc = obj_extend_section(strsec, len);
}
memcpy(loc, string, len);
-
- return 1;
}
-static int
+static void
obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
struct obj_symbol *sym)
{
p->reloc_offset = offset;
p->sym = sym;
f->symbol_patches = p;
-
- return 1;
}
-static int obj_check_undefineds(struct obj_file *f)
+static void obj_check_undefineds(struct obj_file *f)
{
- unsigned long i;
- int ret = 1;
+ unsigned i;
for (i = 0; i < HASH_BUCKETS; ++i) {
struct obj_symbol *sym;
sym->secidx = SHN_ABS;
sym->value = 0;
} else {
- if (!flag_quiet) {
- bb_error_msg("unresolved symbol %s", sym->name);
- }
- ret = 0;
+ if (!flag_quiet)
+ bb_error_msg_and_die("unresolved symbol %s", sym->name);
}
}
}
-
- return ret;
}
static void obj_allocate_commons(struct obj_file *f)
if (i == f->header.e_shnum) {
struct obj_section *sec;
- f->sections = xrealloc(f->sections, (i + 1) * sizeof(sec));
+ f->sections = xrealloc_vector(f->sections, 2, i);
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";
/* Do it! */
switch (arch_apply_relocation
- (f, targsec, symsec, intsym, rel, value)) {
- case obj_reloc_ok:
- break;
+ (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";
+ 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) {
- bb_error_msg("%s of type %ld for %s", errmsg,
- (long) ELF_R_TYPE(rel->r_info),
- strtab + extsym->st_name);
- } else {
- bb_error_msg("%s of type %ld", errmsg,
- (long) ELF_R_TYPE(rel->r_info));
- }
- ret = 0;
- break;
+ if (extsym) {
+ bb_error_msg("%s of type %ld for %s", errmsg,
+ (long) ELF_R_TYPE(rel->r_info),
+ strtab + extsym->st_name);
+ } else {
+ bb_error_msg("%s of type %ld", errmsg,
+ (long) ELF_R_TYPE(rel->r_info));
+ }
+ ret = 0;
+ break;
}
}
}
/*======================================================================*/
-static struct obj_file *obj_load(FILE * fp, int loadprogbits)
+static struct obj_file *obj_load(FILE *fp, int loadprogbits UNUSED_PARAM)
{
struct obj_file *f;
ElfW(Shdr) * section_headers;
- int shnum, i;
+ size_t 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) {
- bb_perror_msg("error reading ELF header");
- return NULL;
+ bb_perror_msg_and_die("error reading ELF header");
}
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) {
- bb_error_msg("not an ELF file");
- return NULL;
+ bb_error_msg_and_die("not an ELF file");
}
if (f->header.e_ident[EI_CLASS] != ELFCLASSM
- || f->header.e_ident[EI_DATA] != ELFDATAM
+ || f->header.e_ident[EI_DATA] != (BB_BIG_ENDIAN
+ ? ELFDATA2MSB : ELFDATA2LSB)
|| f->header.e_ident[EI_VERSION] != EV_CURRENT
|| !MATCH_MACHINE(f->header.e_machine)) {
- bb_error_msg("ELF file not for this architecture");
- return NULL;
+ bb_error_msg_and_die("ELF file not for this architecture");
}
if (f->header.e_type != ET_REL) {
- bb_error_msg("ELF file not a relocatable object");
- return NULL;
+ bb_error_msg_and_die("ELF file not a relocatable object");
}
/* Read the section headers. */
if (f->header.e_shentsize != sizeof(ElfW(Shdr))) {
- bb_error_msg("section header size mismatch: %lu != %lu",
+ bb_error_msg_and_die("section header size mismatch: %lu != %lu",
(unsigned long) f->header.e_shentsize,
(unsigned long) sizeof(ElfW(Shdr)));
- return NULL;
}
shnum = f->header.e_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) {
- bb_perror_msg("error reading ELF section headers");
- return NULL;
+ bb_perror_msg_and_die("error reading ELF section headers");
}
/* Read the section data. */
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) {
+ if (sec->header.sh_size) {
+ switch (sec->header.sh_type) {
case SHT_NULL:
case SHT_NOTE:
case SHT_NOBITS:
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) {
- bb_perror_msg("error reading ELF section data");
- return NULL;
+ bb_perror_msg_and_die("error reading ELF section data");
}
} else {
sec->contents = NULL;
#if SHT_RELM == SHT_REL
case SHT_RELA:
- bb_error_msg("RELA relocations not supported on this architecture");
- return NULL;
+ bb_error_msg_and_die("RELA relocations not supported on this architecture");
#else
case SHT_REL:
- bb_error_msg("REL relocations not supported on this architecture");
- return NULL;
+ bb_error_msg_and_die("REL relocations not supported on this architecture");
#endif
-
default:
if (sec->header.sh_type >= SHT_LOPROC) {
/* Assume processor specific section types are debug
break;
}
- bb_error_msg("can't handle sections of type %ld",
+ bb_error_msg_and_die("can't handle sections of type %ld",
(long) sec->header.sh_type);
- return NULL;
+ }
}
}
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))) {
- bb_error_msg("symbol size mismatch: %lu != %lu",
- (unsigned long) sec->header.sh_entsize,
- (unsigned long) sizeof(ElfW(Sym)));
- return NULL;
- }
+ case SHT_SYMTAB:
+ {
+ unsigned long nsym, j;
+ char *strtab;
+ ElfW(Sym) * sym;
- 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) {
- ElfW(Addr) val = sym->st_value;
- const char *name;
- if (sym->st_name)
- name = strtab + sym->st_name;
- else if (sym->st_shndx < shnum)
- name = f->sections[sym->st_shndx]->name;
- else
- continue;
+ if (sec->header.sh_entsize != sizeof(ElfW(Sym))) {
+ bb_error_msg_and_die("symbol size mismatch: %lu != %lu",
+ (unsigned long) sec->header.sh_entsize,
+ (unsigned long) sizeof(ElfW(Sym)));
+ }
+
+ 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 = xzalloc(j * sizeof(struct obj_symbol *));
+ /* Insert all symbols into the hash table. */
+ for (j = 1, ++sym; j < nsym; ++j, ++sym) {
+ ElfW(Addr) val = sym->st_value;
+ const char *name;
+ if (sym->st_name)
+ name = strtab + sym->st_name;
+ else if (sym->st_shndx < shnum)
+ name = f->sections[sym->st_shndx]->name;
+ else
+ continue;
#if defined(__SH5__)
- /*
- * For sh64 it is possible that the target of a branch
- * requires a mode switch (32 to 16 and back again).
- *
- * This is implied by the lsb being set in the target
- * address for SHmedia mode and clear for SHcompact.
- */
- val |= sym->st_other & 4;
+ /*
+ * For sh64 it is possible that the target of a branch
+ * requires a mode switch (32 to 16 and back again).
+ *
+ * This is implied by the lsb being set in the target
+ * address for SHmedia mode and clear for SHcompact.
+ */
+ val |= sym->st_other & 4;
#endif
-
- obj_add_symbol(f, name, j, sym->st_info, sym->st_shndx,
- val, sym->st_size);
- }
+ obj_add_symbol(f, name, j, sym->st_info, sym->st_shndx,
+ val, sym->st_size);
}
- break;
+ }
+ break;
- case SHT_RELM:
- if (sec->header.sh_entsize != sizeof(ElfW(RelM))) {
- bb_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(). */
+ case SHT_RELM:
+ if (sec->header.sh_entsize != sizeof(ElfW(RelM))) {
+ bb_error_msg_and_die("relocation entry size mismatch: %lu != %lu",
+ (unsigned long) sec->header.sh_entsize,
+ (unsigned long) sizeof(ElfW(RelM)));
+ }
+ 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 CONFIG_FEATURE_INSMOD_LOADINKMEM
+#if ENABLE_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)
+static int obj_load_progbits(FILE *fp, struct obj_file *f, char *imagebase)
{
ElfW(Addr) base = f->baseaddr;
struct obj_section* sec;
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) {
- bb_error_msg("error reading ELF section data: %s\n", strerror(errno));
+ bb_perror_msg("error reading ELF section data");
return 0;
}
struct obj_symbol *sym;
const char *const *p;
- for (p = specials; *p; ++p)
- if ((sym = obj_find_symbol(f, *p)) != NULL)
- sym->info =
- ELF_ST_INFO(STB_LOCAL, ELF_ST_TYPE(sym->info));
+ for (p = specials; *p; ++p) {
+ sym = obj_find_symbol(f, *p);
+ if (sym != NULL)
+ sym->info = ELF_ST_INFO(STB_LOCAL, ELF_ST_TYPE(sym->info));
+ }
}
-#ifdef CONFIG_FEATURE_CHECK_TAINTED_MODULE
+#if ENABLE_FEATURE_CHECK_TAINTED_MODULE
static int obj_gpl_license(struct obj_file *f, const char **license)
{
struct obj_section *sec;
* linux/include/linux/module.h. Checking for leading "GPL" will not
* work, somebody will use "GPL sucks, this is proprietary".
*/
- static const char * const gpl_licenses[] = {
+ static const char *const gpl_licenses[] = {
"GPL",
"GPL v2",
"GPL and additional rights",
"Dual BSD/GPL",
- "Dual MPL/GPL",
+ "Dual MPL/GPL"
};
- if ((sec = obj_find_section(f, ".modinfo"))) {
+ sec = obj_find_section(f, ".modinfo");
+ if (sec) {
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;
+ value = strchr(ptr, '=');
+ if (value && strncmp(ptr, "license", value-ptr) == 0) {
+ unsigned i;
if (license)
*license = value+1;
- for (i = 0; i < sizeof(gpl_licenses)/sizeof(gpl_licenses[0]); ++i) {
+ for (i = 0; i < ARRAY_SIZE(gpl_licenses); ++i) {
if (strcmp(value+1, gpl_licenses[i]) == 0)
- return(0);
+ return 0;
}
- return(2);
+ return 2;
}
- if (strchr(ptr, '\0'))
- ptr = strchr(ptr, '\0') + 1;
+ ptr = strchr(ptr, '\0');
+ if (ptr)
+ ptr++;
else
ptr = endptr;
}
}
- return(1);
+ 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_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,
+static void set_tainted(int fd, char *m_name,
int kernel_has_tainted, int taint, const char *text1, const char *text2)
{
+ static smallint printed_info;
+
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) {
+ if (!printed_info) {
printf(" See %s for information about tainted modules\n", TAINT_URL);
- first = 0;
+ printed_info = 1;
}
if (fd >= 0) {
read(fd, buf, sizeof(buf)-1);
/* 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;
+ static const char tainted_file[] ALIGN1 = TAINT_FILENAME;
+
int fd, kernel_has_tainted;
const char *ptr;
kernel_has_tainted = 1;
- if ((fd = open(tainted_file, O_RDWR)) < 0) {
+ fd = open(tainted_file, O_RDWR);
+ if (fd < 0) {
if (errno == ENOENT)
kernel_has_tainted = 0;
else if (errno == EACCES)
case 0:
break;
case 1:
- set_tainted(f, fd, m_name, kernel_has_tainted, TAINT_PROPRIETORY_MODULE, "no license", "");
+ set_tainted(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);
+ set_tainted(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", "");
+ set_tainted(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", "");
+ set_tainted(fd, m_name, 1, TAINT_FORCED_MODULE, "forced load", "");
if (fd >= 0)
close(fd);
}
-#else /* CONFIG_FEATURE_CHECK_TAINTED_MODULE */
-#define check_tainted_module(x, y) do { } while(0);
-#endif /* CONFIG_FEATURE_CHECK_TAINTED_MODULE */
+#else /* FEATURE_CHECK_TAINTED_MODULE */
+#define check_tainted_module(x, y) do { } while (0);
+#endif /* FEATURE_CHECK_TAINTED_MODULE */
-#ifdef CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
+#if ENABLE_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
/* add module source, timestamp, kernel version and a symbol for the
* start of some sections. this info is used by ksymoops to do better
* debugging.
*/
+#if !ENABLE_FEATURE_INSMOD_VERSION_CHECKING
+#define get_module_version(f, str) get_module_version(str)
+#endif
static int
get_module_version(struct obj_file *f, char str[STRVERSIONLEN])
{
-#ifdef CONFIG_FEATURE_INSMOD_VERSION_CHECKING
+#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
return new_get_module_version(f, str);
-#else /* CONFIG_FEATURE_INSMOD_VERSION_CHECKING */
+#else /* FEATURE_INSMOD_VERSION_CHECKING */
strncpy(str, "???", sizeof(str));
return -1;
-#endif /* CONFIG_FEATURE_INSMOD_VERSION_CHECKING */
+#endif /* FEATURE_INSMOD_VERSION_CHECKING */
}
/* add module source, timestamp, kernel version and a symbol for the
add_ksymoops_symbols(struct obj_file *f, const char *filename,
const char *m_name)
{
- static const char symprefix[] = "__insmod_";
- struct obj_section *sec;
- struct obj_symbol *sym;
- char *name, *absolute_filename;
- char str[STRVERSIONLEN], real[PATH_MAX];
- int i, l, lm_name, lfilename, use_ksymtab, version;
- struct stat statbuf;
-
- static const char *section_names[] = {
+ static const char symprefix[] ALIGN1 = "__insmod_";
+ static const char section_names[][8] = {
".text",
".rodata",
".data",
".sbss"
};
- if (realpath(filename, real)) {
- absolute_filename = bb_xstrdup(real);
- }
- else {
- int save_errno = errno;
- bb_error_msg("cannot get realpath for %s", filename);
- errno = save_errno;
- perror("");
- absolute_filename = bb_xstrdup(filename);
- }
+ struct obj_section *sec;
+ struct obj_symbol *sym;
+ char *name, *absolute_filename;
+ char str[STRVERSIONLEN];
+ unsigned i;
+ int l, lm_name, lfilename, use_ksymtab, version;
+ struct stat statbuf;
+
+ /* WARNING: was using realpath, but replaced by readlink to stop using
+ * lots of stack. But here it seems to be able to cause problems? */
+ absolute_filename = xmalloc_readlink(filename);
+ if (!absolute_filename)
+ absolute_filename = xstrdup(filename);
lm_name = strlen(m_name);
lfilename = strlen(absolute_filename);
* are not to be exported. otherwise leave ksymtab alone for now, the
* "export all symbols" compatibility code will export these symbols later.
*/
- use_ksymtab = obj_find_section(f, "__ksymtab") || !flag_export;
+ use_ksymtab = obj_find_section(f, "__ksymtab") || flag_noexport;
- if ((sec = obj_find_section(f, ".this"))) {
+ sec = obj_find_section(f, ".this");
+ if (sec) {
/* tag the module header with the object name, last modified
* timestamp and module version. worst case for module version
* is 0xffffff, decimal 16777215. putting all three fields in
* one symbol is less readable but saves kernel space.
*/
- l = sizeof(symprefix)+ /* "__insmod_" */
- lm_name+ /* module name */
- 2+ /* "_O" */
- lfilename+ /* object filename */
- 2+ /* "_M" */
- 2*sizeof(statbuf.st_mtime)+ /* mtime in hex */
- 2+ /* "_V" */
- 8+ /* version in dec */
- 1; /* nul */
+ l = sizeof(symprefix) + /* "__insmod_" */
+ lm_name + /* module name */
+ 2 + /* "_O" */
+ lfilename + /* object filename */
+ 2 + /* "_M" */
+ 2 * sizeof(statbuf.st_mtime) + /* mtime in hex */
+ 2 + /* "_V" */
+ 8 + /* version in dec */
+ 1; /* nul */
name = xmalloc(l);
if (stat(absolute_filename, &statbuf) != 0)
statbuf.st_mtime = 0;
version = get_module_version(f, str); /* -1 if not found */
snprintf(name, l, "%s%s_O%s_M%0*lX_V%d",
symprefix, m_name, absolute_filename,
- (int)(2*sizeof(statbuf.st_mtime)), statbuf.st_mtime,
+ (int)(2 * sizeof(statbuf.st_mtime)), statbuf.st_mtime,
version);
sym = obj_add_symbol(f, name, -1,
ELF_ST_INFO(STB_GLOBAL, STT_NOTYPE),
/* record where the persistent data is going, same address as previous symbol */
if (f->persist) {
- l = sizeof(symprefix)+ /* "__insmod_" */
- lm_name+ /* module name */
- 2+ /* "_P" */
- strlen(f->persist)+ /* data store */
- 1; /* nul */
+ l = sizeof(symprefix) + /* "__insmod_" */
+ lm_name + /* module name */
+ 2 + /* "_P" */
+ strlen(f->persist) + /* data store */
+ 1; /* nul */
name = xmalloc(l);
snprintf(name, l, "%s%s_P%s",
symprefix, m_name, f->persist);
#endif /* _NOT_SUPPORTED_ */
/* tag the desired sections if size is non-zero */
- for (i = 0; i < sizeof(section_names)/sizeof(section_names[0]); ++i) {
- if ((sec = obj_find_section(f, section_names[i])) &&
- sec->header.sh_size) {
- l = sizeof(symprefix)+ /* "__insmod_" */
- lm_name+ /* module name */
- 2+ /* "_S" */
- strlen(sec->name)+ /* section name */
- 2+ /* "_L" */
- 8+ /* length in dec */
- 1; /* nul */
+ for (i = 0; i < ARRAY_SIZE(section_names); ++i) {
+ sec = obj_find_section(f, section_names[i]);
+ if (sec && sec->header.sh_size) {
+ l = sizeof(symprefix) + /* "__insmod_" */
+ lm_name + /* module name */
+ 2 + /* "_S" */
+ strlen(sec->name) + /* section name */
+ 2 + /* "_L" */
+ 8 + /* length in dec */
+ 1; /* nul */
name = xmalloc(l);
snprintf(name, l, "%s%s_S%s_L%ld",
symprefix, m_name, sec->name,
}
}
}
-#endif /* CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS */
+#endif /* FEATURE_INSMOD_KSYMOOPS_SYMBOLS */
-#ifdef CONFIG_FEATURE_INSMOD_LOAD_MAP
+#if ENABLE_FEATURE_INSMOD_LOAD_MAP
static void print_load_map(struct obj_file *f)
{
- struct obj_symbol *sym;
- struct obj_symbol **all, **p;
struct obj_section *sec;
+#if ENABLE_FEATURE_INSMOD_LOAD_MAP_FULL
+ struct obj_symbol **all, **p;
int i, nsyms, *loaded;
-
+ struct obj_symbol *sym;
+#endif
/* Report on the section layout. */
printf("Sections: Size %-*s Align\n",
(long)sec->header.sh_addr,
a);
}
-#ifdef CONFIG_FEATURE_INSMOD_LOAD_MAP_FULL
+#if ENABLE_FEATURE_INSMOD_LOAD_MAP_FULL
/* Quick reference which section indicies are loaded. */
- loaded = alloca(sizeof(int) * (i = f->header.e_shnum));
+ i = f->header.e_shnum;
+ loaded = alloca(sizeof(int) * i);
while (--i >= 0)
- loaded[i] = (f->sections[i]->header.sh_flags & SHF_ALLOC) != 0;
+ loaded[i] = ((f->sections[i]->header.sh_flags & SHF_ALLOC) != 0);
/* Collect the symbols we'll be listing. */
}
#endif
}
-
+#else /* !FEATURE_INSMOD_LOAD_MAP */
+void print_load_map(struct obj_file *f);
#endif
-extern int insmod_main( int argc, char **argv)
+int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int insmod_main(int argc, char **argv)
{
- int opt;
+ char *opt_o, *arg1;
int len;
int k_crcs;
char *tmp, *tmp1;
ElfW(Addr) m_addr;
struct obj_file *f;
struct stat st;
- char *m_name = 0;
+ char *m_name = NULL;
int exit_status = EXIT_FAILURE;
int m_has_modinfo;
-#ifdef CONFIG_FEATURE_INSMOD_VERSION_CHECKING
+#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
struct utsname uts_info;
char m_strversion[STRVERSIONLEN];
int m_version, m_crcs;
#endif
-#ifdef CONFIG_FEATURE_CLEAN_UP
- FILE *fp = 0;
+#if ENABLE_FEATURE_CLEAN_UP
+ FILE *fp = NULL;
#else
FILE *fp;
-#endif
-#ifdef CONFIG_FEATURE_INSMOD_LOAD_MAP
- int flag_print_load_map = 0;
#endif
int k_version = 0;
struct utsname myuname;
/* Parse any options */
-#ifdef CONFIG_FEATURE_INSMOD_LOAD_MAP
- while ((opt = getopt(argc, argv, "fkqsvxmLo:")) > 0)
-#else
- while ((opt = getopt(argc, argv, "fkqsvxLo:")) > 0)
-#endif
- {
- switch (opt) {
- case 'f': /* force loading */
- flag_force_load = 1;
- break;
- case 'k': /* module loaded by kerneld, auto-cleanable */
- flag_autoclean = 1;
- break;
- case 's': /* log to syslog */
- /* log to syslog -- not supported */
- /* but kernel needs this for request_module(), */
- /* as this calls: modprobe -k -s -- <module> */
- /* so silently ignore this flag */
- break;
- case 'v': /* verbose output */
- flag_verbose = 1;
- break;
- case 'q': /* silent */
- flag_quiet = 1;
- break;
- case 'x': /* do not export externs */
- flag_export = 0;
- break;
- case 'o': /* name the output module */
- free(m_name);
- m_name = bb_xstrdup(optarg);
- break;
- case 'L': /* Stub warning */
- /* This is needed for compatibility with modprobe.
- * In theory, this does locking, but we don't do
- * that. So be careful and plan your life around not
- * loading the same module 50 times concurrently. */
- break;
-#ifdef CONFIG_FEATURE_INSMOD_LOAD_MAP
- case 'm': /* print module load map */
- flag_print_load_map = 1;
- break;
-#endif
- default:
- bb_show_usage();
- }
- }
+ getopt32(argv, OPTION_STR, &opt_o);
+ arg1 = argv[optind];
+ if (option_mask32 & OPT_o) { // -o /* name the output module */
+ free(m_name);
+ m_name = xstrdup(opt_o);
+ }
- if (argv[optind] == NULL) {
+ if (arg1 == NULL) {
bb_show_usage();
}
/* Grab the module name */
- tmp1 = bb_xstrdup(argv[optind]);
+ tmp1 = xstrdup(arg1);
tmp = basename(tmp1);
len = strlen(tmp);
}
}
-#if defined(CONFIG_FEATURE_2_6_MODULES)
- if (k_version > 4 && len > 3 && tmp[len - 3] == '.' &&
- tmp[len - 2] == 'k' && tmp[len - 1] == 'o') {
- len-=3;
+#if ENABLE_FEATURE_2_6_MODULES
+ if (k_version > 4 && len > 3 && tmp[len - 3] == '.'
+ && tmp[len - 2] == 'k' && tmp[len - 1] == 'o'
+ ) {
+ len -= 3;
tmp[len] = '\0';
- }
- else
+ } else
#endif
if (len > 2 && tmp[len - 2] == '.' && tmp[len - 1] == 'o') {
- len-=2;
+ len -= 2;
tmp[len] = '\0';
}
-#if defined(CONFIG_FEATURE_2_6_MODULES)
+#if ENABLE_FEATURE_2_6_MODULES
if (k_version > 4)
- m_fullName = bb_xasprintf("%s.ko", tmp);
+ m_fullName = xasprintf("%s.ko", tmp);
else
#endif
- m_fullName = bb_xasprintf("%s.o", tmp);
+ m_fullName = xasprintf("%s.o", tmp);
if (!m_name) {
m_name = tmp;
} else {
free(tmp1);
- tmp1 = 0; /* flag for free(m_name) before exit() */
+ tmp1 = NULL; /* flag for free(m_name) before exit() */
}
- /* Get a filedesc for the module. Check we we have a complete path */
- if (stat(argv[optind], &st) < 0 || !S_ISREG(st.st_mode) ||
- (fp = fopen(argv[optind], "r")) == NULL) {
+ /* Get a filedesc for the module. Check that we have a complete path */
+ if (stat(arg1, &st) < 0 || !S_ISREG(st.st_mode)
+ || (fp = fopen(arg1, "r")) == NULL
+ ) {
/* Hmm. Could not open it. First search under /lib/modules/`uname -r`,
* but do not error out yet if we fail to find it... */
if (k_version) { /* uname succeedd */
char *module_dir;
char *tmdn;
- char real_module_dir[FILENAME_MAX];
- tmdn = concat_path_file(_PATH_MODULES, myuname.release);
+ tmdn = concat_path_file(CONFIG_DEFAULT_MODULES_DIR, myuname.release);
/* Jump through hoops in case /lib/modules/`uname -r`
* is a symlink. We do not want recursive_action to
* follow symlinks, but we do want to follow the
* /lib/modules/`uname -r` dir, So resolve it ourselves
* if it is a link... */
- if (realpath (tmdn, real_module_dir) == NULL)
- module_dir = tmdn;
- else
- module_dir = real_module_dir;
- recursive_action(module_dir, TRUE, FALSE, FALSE,
- check_module_name_match, 0, m_fullName);
+ module_dir = xmalloc_readlink(tmdn);
+ if (!module_dir)
+ module_dir = xstrdup(tmdn);
+ recursive_action(module_dir, ACTION_RECURSE,
+ check_module_name_match, NULL, m_fullName, 0);
+ free(module_dir);
free(tmdn);
}
/* Check if we have found anything yet */
- if (m_filename == 0 || ((fp = fopen(m_filename, "r")) == NULL))
- {
- char module_dir[FILENAME_MAX];
+ if (!m_filename || ((fp = fopen(m_filename, "r")) == NULL)) {
+ int r;
+ char *module_dir;
free(m_filename);
- m_filename = 0;
- if (realpath (_PATH_MODULES, module_dir) == NULL)
- strcpy(module_dir, _PATH_MODULES);
+ m_filename = NULL;
+ module_dir = xmalloc_readlink(CONFIG_DEFAULT_MODULES_DIR);
+ if (!module_dir)
+ module_dir = xstrdup(CONFIG_DEFAULT_MODULES_DIR);
/* No module found under /lib/modules/`uname -r`, this
* time cast the net a bit wider. Search /lib/modules/ */
- if (! recursive_action(module_dir, TRUE, FALSE, FALSE,
- check_module_name_match, 0, m_fullName))
- {
- if (m_filename == 0
- || ((fp = fopen(m_filename, "r")) == NULL))
- {
- bb_error_msg("%s: no module by that name found", m_fullName);
- goto out;
- }
- } else
- bb_error_msg_and_die("%s: no module by that name found", m_fullName);
+ r = recursive_action(module_dir, ACTION_RECURSE,
+ check_module_name_match, NULL, m_fullName, 0);
+ if (r)
+ bb_error_msg_and_die("%s: module not found", m_fullName);
+ free(module_dir);
+ if (m_filename == NULL
+ || ((fp = fopen(m_filename, "r")) == NULL)
+ ) {
+ bb_error_msg_and_die("%s: module not found", m_fullName);
+ }
}
} else
- m_filename = bb_xstrdup(argv[optind]);
+ m_filename = xstrdup(arg1);
if (flag_verbose)
printf("Using %s\n", m_filename);
-#ifdef CONFIG_FEATURE_2_6_MODULES
- if (k_version > 4)
- {
+#if ENABLE_FEATURE_2_6_MODULES
+ if (k_version > 4) {
+ argv[optind] = m_filename;
optind--;
- argv[optind + 1] = m_filename;
return insmod_ng_main(argc - optind, argv + optind);
}
#endif
- if ((f = obj_load(fp, LOADBITS)) == NULL)
- bb_perror_msg_and_die("Could not load the module");
+ f = obj_load(fp, LOADBITS);
if (get_modinfo_value(f, "kernel_version") == NULL)
m_has_modinfo = 0;
else
m_has_modinfo = 1;
-#ifdef CONFIG_FEATURE_INSMOD_VERSION_CHECKING
+#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
/* Version correspondence? */
if (!flag_quiet) {
if (uname(&uts_info) < 0)
if (m_has_modinfo) {
m_version = new_get_module_version(f, m_strversion);
if (m_version == -1) {
- bb_error_msg("couldn't find the kernel version the module was "
+ bb_error_msg_and_die("cannot find the kernel version the module was "
"compiled for");
- goto out;
}
}
if (strncmp(uts_info.release, m_strversion, STRVERSIONLEN) != 0) {
- if (flag_force_load) {
- bb_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 {
- bb_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);
+ bb_error_msg("%skernel-module version mismatch\n"
+ "\t%s was compiled for kernel version %s\n"
+ "\twhile this kernel is version %s",
+ flag_force_load ? "warning: " : "",
+ m_filename, m_strversion, uts_info.release);
+ if (!flag_force_load)
goto out;
- }
}
}
k_crcs = 0;
-#endif /* CONFIG_FEATURE_INSMOD_VERSION_CHECKING */
+#endif /* FEATURE_INSMOD_VERSION_CHECKING */
- if (!query_module(NULL, 0, NULL, 0, NULL)) {
- if (!new_get_kernel_symbols())
- goto out;
- k_crcs = new_is_kernel_checksummed();
- } else {
- bb_error_msg("Not configured to support old kernels");
- goto out;
- }
+ if (query_module(NULL, 0, NULL, 0, NULL))
+ bb_error_msg_and_die("not configured to support old kernels");
+ new_get_kernel_symbols();
+ k_crcs = new_is_kernel_checksummed();
-#ifdef CONFIG_FEATURE_INSMOD_VERSION_CHECKING
+#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
m_crcs = 0;
if (m_has_modinfo)
m_crcs = new_is_module_checksummed(f);
if (m_crcs != k_crcs)
obj_set_symbol_compare(f, ncv_strcmp, ncv_symbol_hash);
-#endif /* CONFIG_FEATURE_INSMOD_VERSION_CHECKING */
+#endif /* 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 (!new_create_this_module(f, m_name))
- {
- goto out;
- }
-
- if (!obj_check_undefineds(f)) {
- goto out;
- }
+ new_create_this_module(f, m_name);
+ obj_check_undefineds(f);
obj_allocate_commons(f);
check_tainted_module(f, m_name);
/* done with the module name, on to the optional var=value arguments */
++optind;
-
if (optind < argc) {
- if (!new_process_module_arguments(f, argc - optind, argv + optind))
- {
- goto out;
- }
+ new_process_module_arguments(f, argc - optind, argv + optind);
}
arch_create_got(f);
hide_special_symbols(f);
-#ifdef CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
+#if ENABLE_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
add_ksymoops_symbols(f, m_filename, m_name);
-#endif /* CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS */
+#endif /* FEATURE_INSMOD_KSYMOOPS_SYMBOLS */
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) {
+ if (m_addr == (ElfW(Addr))(-1)) switch (errno) {
case EEXIST:
- bb_error_msg("A module named %s already exists", m_name);
- goto out;
+ bb_error_msg_and_die("a module named %s already exists", m_name);
case ENOMEM:
- bb_error_msg("Can't allocate kernel memory for module; needed %lu bytes",
+ bb_error_msg_and_die("can't allocate kernel memory for module; needed %lu bytes",
m_size);
- goto out;
default:
- bb_perror_msg("create_module: %s", m_name);
- goto out;
+ bb_perror_msg_and_die("create_module: %s", m_name);
}
-#if !LOADBITS
+#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);
+ delete_module(m_name, 0);
goto out;
}
#endif
if (!obj_relocate(f, m_addr)) {
- delete_module(m_name);
+ delete_module(m_name, 0);
goto out;
}
- if (!new_init_module(m_name, f, m_size))
- {
- delete_module(m_name);
+ if (!new_init_module(m_name, f, m_size)) {
+ delete_module(m_name, 0);
goto out;
}
-#ifdef CONFIG_FEATURE_INSMOD_LOAD_MAP
- if(flag_print_load_map)
+ if (flag_print_load_map)
print_load_map(f);
-#endif
exit_status = EXIT_SUCCESS;
-out:
-#ifdef CONFIG_FEATURE_CLEAN_UP
- if(fp)
+ out:
+#if ENABLE_FEATURE_CLEAN_UP
+ if (fp)
fclose(fp);
- if(tmp1) {
- free(tmp1);
- } else {
+ free(tmp1);
+ if (!tmp1)
free(m_name);
- }
free(m_filename);
#endif
- return(exit_status);
+ return exit_status;
}
-
-#endif
+#endif /* ENABLE_FEATURE_2_4_MODULES */
+/*
+ * End of big piece of 2.4-specific code
+ */
-#ifdef CONFIG_FEATURE_2_6_MODULES
+#if ENABLE_FEATURE_2_6_MODULES
#include <sys/mman.h>
+
+#if defined __UCLIBC__ && !ENABLE_FEATURE_2_4_MODULES
+/* big time suckage. The old prototype above renders our nice fwd-decl wrong */
+extern int init_module(void *module, unsigned long len, const char *options);
+#else
#include <asm/unistd.h>
#include <sys/syscall.h>
+#define init_module(mod, len, opts) syscall(__NR_init_module, mod, len, opts)
+#endif
/* We use error numbers in a loose translation... */
static const char *moderror(int err)
{
switch (err) {
- case ENOEXEC:
- return "Invalid module format";
- case ENOENT:
- return "Unknown symbol in module";
- case ESRCH:
- return "Module has wrong symbol version";
- case EINVAL:
- return "Invalid parameters";
- default:
- return strerror(err);
+ case ENOEXEC:
+ return "invalid module format";
+ case ENOENT:
+ return "unknown symbol in module";
+ case ESRCH:
+ return "module has wrong symbol version";
+ case EINVAL:
+ return "invalid parameters";
+ default:
+ return strerror(err);
}
}
-extern int insmod_ng_main( int argc, char **argv)
+#if !ENABLE_FEATURE_2_4_MODULES
+int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int insmod_main(int argc UNUSED_PARAM, char **argv)
+#else
+static int insmod_ng_main(int argc UNUSED_PARAM, char **argv)
+#endif
{
- int i;
- int fd;
- long int ret;
- struct stat st;
- unsigned long len;
+ size_t len;
+ int optlen;
void *map;
- char *filename, *options = bb_xstrdup("");
+ char *filename, *options;
- filename = argv[1];
- if (!filename) {
+ filename = *++argv;
+ if (!filename)
bb_show_usage();
- return -1;
- }
/* Rest is options */
- for (i = 2; i < argc; i++) {
- options = xrealloc(options, strlen(options) + 2 + strlen(argv[i]) + 2);
+ options = xzalloc(1);
+ optlen = 0;
+ while (*++argv) {
+ options = xrealloc(options, optlen + 2 + strlen(*argv) + 2);
/* Spaces handled by "" pairs, but no way of escaping quotes */
- if (strchr(argv[i], ' ')) {
- strcat(options, "\"");
- strcat(options, argv[i]);
- strcat(options, "\"");
- } else {
- strcat(options, argv[i]);
- }
- strcat(options, " ");
- }
-
- if ((fd = open(filename, O_RDONLY, 0)) < 0) {
- bb_perror_msg_and_die("cannot open module `%s'", filename);
+ optlen += sprintf(options + optlen, (strchr(*argv,' ') ? "\"%s\" " : "%s "), *argv);
}
+#if 0
+ /* Any special reason why mmap? It isn't performance critical. -vda */
+ /* Yes, xmalloc'ing can use *alot* of RAM. Don't forget that there are
+ * modules out there that are half a megabyte! mmap()ing is way nicer
+ * for small mem boxes, i guess. */
+ /* But after load, these modules will take up that 0.5mb in kernel
+ * anyway. Using malloc here causes only a transient spike to 1mb,
+ * after module is loaded, we go back to normal 0.5mb usage
+ * (in kernel). Also, mmap isn't magic - when we touch mapped data,
+ * we use memory. -vda */
+ int fd;
+ struct stat st;
+ unsigned long len;
+ fd = xopen(filename, O_RDONLY);
fstat(fd, &st);
len = st.st_size;
map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
if (map == MAP_FAILED) {
- bb_perror_msg_and_die("cannot mmap `%s'", filename);
+ bb_perror_msg_and_die("cannot mmap '%s'", filename);
}
- ret = syscall(__NR_init_module, map, len, options);
- if (ret != 0) {
- bb_perror_msg_and_die("cannot insert `%s': %s (%li)",
- filename, moderror(errno), ret);
+ /* map == NULL on Blackfin, probably on other MMU-less systems too. Workaround. */
+ if (map == NULL) {
+ map = xmalloc(len);
+ xread(fd, map, len);
}
+#else
+ len = MAXINT(ssize_t);
+ map = xmalloc_open_read_close(filename, &len);
+#endif
+ if (init_module(map, len, options) != 0)
+ bb_error_msg_and_die("cannot insert '%s': %s",
+ filename, moderror(errno));
return 0;
}
projects / oweals / busybox.git / blobdiff