/* 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;
#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 char *m_fullName;
-
/*======================================================================*/
static int check_module_name_match(const char *filename, struct stat *statbuf,
- void *userdata)
+ void *userdata)
{
char *fullname = (char *) userdata;
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)
{
struct arch_file *ifile = (struct arch_file *) f;
enum obj_reloc ret = obj_reloc_ok;
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;
+ case R_V850_22_PCREL:
+ plt_needed = 1;
+ break;
#endif
- default:
- continue;
+ default:
+ continue;
}
if (extsym->st_name != 0) {
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;
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;
}
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;
return 0;
} else if (*q == '\\')
switch (*++q) {
- case 'a':
- *r = '\a';
- break;
- case 'b':
- *r = '\b';
- break;
- case 'e':
- *r = '\033';
- break;
- case 'f':
- *r = '\f';
- break;
- case 'n':
- *r = '\n';
- break;
- case 'r':
- *r = '\r';
- break;
- case 't':
- *r = '\t';
- break;
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- {
- int c = *q - '0';
- if (q[1] >= '0' && q[1] <= '7') {
+ 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;
+ default:
+ *r = *q;
+ break;
} else
*r = *q;
}
} 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("unknown parameter type '%c' for %s", *p, key);
+ return 0;
}
}
retry_end_of_value:
switch (*q) {
- case '\0':
- goto end_of_arg;
-
- case ' ':
- case '\t':
- case '\n':
- case '\r':
- ++q;
- goto retry_end_of_value;
-
- case ',':
- if (++n > max) {
- bb_error_msg("too many values for %s (max %d)", key, max);
- return 0;
- }
- ++q;
- break;
-
- default:
- bb_error_msg("invalid argument syntax for %s", key);
+ 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;
+
+ default:
+ bb_error_msg("invalid argument syntax for %s", key);
+ return 0;
}
}
/* 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;
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
/* 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;
}
}
}
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:
bb_error_msg("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 = 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 (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;
+ }
+ 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("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(). */
}
}
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));
+ }
}
"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) {
+ value = strchr(ptr, '=');
+ if (value && strncmp(ptr, "license", value-ptr) == 0) {
int i;
if (license)
*license = value+1;
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)
int insmod_main( int argc, char **argv)
{
- char *opt_o;
+ char *opt_o, *arg1;
int len;
int k_crcs;
char *tmp, *tmp1;
/* Parse any options */
getopt32(argc, 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 = 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 (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';
}
}
/* 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) {
+ 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 */
* 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)
+ if (realpath(tmdn, real_module_dir) == NULL)
module_dir = tmdn;
else
module_dir = real_module_dir;
}
/* Check if we have found anything yet */
- if (m_filename == 0 || ((fp = fopen(m_filename, "r")) == NULL))
- {
+ if (m_filename == 0 || ((fp = fopen(m_filename, "r")) == NULL)) {
char module_dir[FILENAME_MAX];
free(m_filename);
strcpy(module_dir, _PATH_MODULES);
/* 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 (!recursive_action(module_dir, TRUE, FALSE, FALSE,
+ check_module_name_match, 0, m_fullName)
+ ) {
if (m_filename == 0
- || ((fp = fopen(m_filename, "r")) == NULL))
- {
+ || ((fp = fopen(m_filename, "r")) == NULL)
+ ) {
bb_error_msg("%s: no module by that name found", m_fullName);
goto out;
}
bb_error_msg_and_die("%s: no module by that name found", m_fullName);
}
} else
- m_filename = 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 (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 (f == NULL)
+ bb_perror_msg_and_die("cannot load the module");
if (get_modinfo_value(f, "kernel_version") == NULL)
m_has_modinfo = 0;
/* Allocate common symbols, symbol tables, and string tables. */
- if (!new_create_this_module(f, m_name))
- {
+ if (!new_create_this_module(f, m_name)) {
goto out;
}
/* 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))
- {
+ if (!new_process_module_arguments(f, argc - optind, argv + optind)) {
goto out;
}
}
goto out;
}
- if (!new_init_module(m_name, f, m_size))
- {
+ if (!new_init_module(m_name, f, m_size)) {
delete_module(m_name);
goto out;
}
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);
}
}
projects / oweals / busybox.git / commitdiff