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Diffstat (limited to 'modutils/insmod.c')
-rw-r--r--modutils/insmod.c411
1 files changed, 172 insertions, 239 deletions
diff --git a/modutils/insmod.c b/modutils/insmod.c
index 6f3b7d0..df75abb 100644
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -67,25 +67,21 @@
#define ENABLE_FEATURE_2_4_MODULES 1
#endif
-#if !ENABLE_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 ENABLE_FEATURE_2_6_MODULES
-extern int insmod_ng_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+static int insmod_ng_main(int argc, char **argv);
#endif
-
-#if ENABLE_FEATURE_2_4_MODULES
-
-
#if ENABLE_FEATURE_INSMOD_LOADINKMEM
#define LOADBITS 0
#else
#define LOADBITS 1
#endif
-
/* Alpha */
#if defined(__alpha__)
#define MATCH_MACHINE(x) (x == EM_ALPHA)
@@ -627,13 +623,13 @@ static struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
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);
@@ -788,7 +784,6 @@ static size_t nksyms;
static struct external_module *ext_modules;
static int n_ext_modules;
static int n_ext_modules_used;
-extern int delete_module(const char *);
static char *m_filename;
static char *m_fullName;
@@ -801,19 +796,16 @@ static int check_module_name_match(const char *filename, struct stat *statbuf,
void *userdata, int depth)
{
char *fullname = (char *) userdata;
+ char *tmp;
if (fullname[0] == '\0')
return FALSE;
- else {
- char *tmp, *tmp1 = xstrdup(filename);
- tmp = bb_get_last_path_component_nostrip(tmp1);
- if (strcmp(tmp, fullname) == 0) {
- free(tmp1);
- /* Stop searching if we find a match */
- m_filename = xstrdup(filename);
- return FALSE;
- }
- free(tmp1);
+
+ 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;
}
@@ -824,25 +816,19 @@ static int check_module_name_match(const char *filename, struct stat *statbuf,
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;
}
@@ -2210,7 +2196,6 @@ static struct obj_section *obj_create_alloced_section(struct obj_file *f,
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;
@@ -2236,7 +2221,6 @@ static struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
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;
@@ -2398,7 +2382,7 @@ static char *get_modinfo_value(struct obj_file *f, const char *key)
/*======================================================================*/
/* 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) {
@@ -2408,7 +2392,8 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
int min, max, n;
p = *argv;
- if ((q = strchr(p, '=')) == NULL) {
+ q = strchr(p, '=');
+ if (q == NULL) {
argc--;
continue;
}
@@ -2421,8 +2406,7 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
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
@@ -2436,8 +2420,7 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
/* Also check that the parameter was not resolved from the kernel. */
if (sym == NULL || sym->secidx > SHN_HIRESERVE) {
- 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)) {
@@ -2463,11 +2446,10 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
str = alloca(strlen(q));
for (r = str, q++; *q != '"'; ++q, ++r) {
- if (*q == '\0') {
- 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';
@@ -2513,8 +2495,9 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
default:
*r = *q;
break;
- } else
- *r = *q;
+ }
+ else
+ *r = *q;
}
*r = '\0';
++q;
@@ -2558,17 +2541,15 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
/* Get the size of each member */
/* Probably we should do that outside the loop ? */
if (!isdigit(*(p + 1))) {
- 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 */
@@ -2595,12 +2576,10 @@ new_process_module_arguments(struct obj_file *f, int argc, char **argv)
break;
default:
- bb_error_msg("unknown parameter type '%c' for %s", *p, key);
- return 0;
+ 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;
@@ -2614,28 +2593,23 @@ retry_end_of_value:
case ',':
if (++n > max) {
- bb_error_msg("too many values for %s (max %d)", key, max);
- return 0;
+ 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;
+ 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;
}
#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
@@ -2644,8 +2618,7 @@ static int new_is_module_checksummed(struct obj_file *f)
const char *p = get_modinfo_value(f, "using_checksums");
if (p)
return xatoi(p);
- else
- return 0;
+ return 0;
}
/* Get the module's kernel version in the canonical integer form. */
@@ -2679,7 +2652,7 @@ new_get_module_version(struct obj_file *f, char str[STRVERSIONLEN])
/* 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;
@@ -2688,15 +2661,17 @@ static int new_get_kernel_symbols(void)
/* 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;
@@ -2715,23 +2690,23 @@ retry_modules_load:
/* 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;
@@ -2750,14 +2725,13 @@ retry_mod_sym_load:
/* 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);
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;
@@ -2765,7 +2739,6 @@ retry_kern_sym_load:
for (j = 0, s = syms; j < nsyms; ++j, ++s) {
s->name += (unsigned long) syms;
}
- return 1;
}
@@ -2786,7 +2759,7 @@ static int new_is_kernel_checksummed(void)
}
-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;
@@ -2800,8 +2773,6 @@ static int new_create_this_module(struct obj_file *f, const char *m_name)
obj_string_patch(f, sec->idx, offsetof(struct new_module, name),
m_name);
-
- return 1;
}
#if ENABLE_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
@@ -2985,7 +2956,7 @@ new_init_module(const char *m_name, struct obj_file *f, unsigned long m_size)
/*======================================================================*/
-static int
+static void
obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
const char *string)
{
@@ -3010,11 +2981,9 @@ obj_string_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
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)
{
@@ -3026,14 +2995,11 @@ obj_symbol_patch(struct obj_file *f, int secidx, ElfW(Addr) offset,
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;
@@ -3043,15 +3009,11 @@ static int obj_check_undefineds(struct obj_file *f)
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)
@@ -3114,7 +3076,6 @@ static void obj_allocate_commons(struct obj_file *f)
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";
@@ -3347,44 +3308,38 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
/* 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] != (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;
@@ -3394,8 +3349,7 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
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. */
@@ -3404,7 +3358,6 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
struct obj_section *sec;
f->sections[i] = sec = arch_new_section();
- memset(sec, 0, sizeof(*sec));
sec->header = section_headers[i];
sec->idx = i;
@@ -3431,8 +3384,7 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
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;
@@ -3441,14 +3393,11 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
#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
@@ -3458,9 +3407,8 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
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;
}
}
}
@@ -3494,10 +3442,9 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
ElfW(Sym) * sym;
if (sec->header.sh_entsize != sizeof(ElfW(Sym))) {
- bb_error_msg("symbol size mismatch: %lu != %lu",
+ bb_error_msg_and_die("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));
@@ -3528,7 +3475,6 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
*/
val |= sym->st_other & 4;
#endif
-
obj_add_symbol(f, name, j, sym->st_info, sym->st_shndx,
val, sym->st_size);
}
@@ -3537,10 +3483,9 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits)
case SHT_RELM:
if (sec->header.sh_entsize != sizeof(ElfW(RelM))) {
- bb_error_msg("relocation entry size mismatch: %lu != %lu",
+ bb_error_msg_and_die("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.
@@ -3638,8 +3583,9 @@ static int obj_gpl_license(struct obj_file *f, const char **license)
}
return 2;
}
- if (strchr(ptr, '\0'))
- ptr = strchr(ptr, '\0') + 1;
+ ptr = strchr(ptr, '\0');
+ if (ptr)
+ ptr++;
else
ptr = endptr;
}
@@ -3648,12 +3594,12 @@ static int obj_gpl_license(struct obj_file *f, const char **license)
}
#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;
@@ -3703,22 +3649,22 @@ static void check_tainted_module(struct obj_file *f, char *m_name)
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);
@@ -3752,15 +3698,7 @@ add_ksymoops_symbols(struct obj_file *f, const char *filename,
const char *m_name)
{
static const char symprefix[] ALIGN1 = "__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 section_names[][8] = {
".text",
".rodata",
".data",
@@ -3768,12 +3706,18 @@ add_ksymoops_symbols(struct obj_file *f, const char *filename,
".sbss"
};
- if (realpath(filename, real)) {
- absolute_filename = xstrdup(real);
- } else {
- bb_perror_msg("cannot get realpath for %s", filename);
+ struct obj_section *sec;
+ struct obj_symbol *sym;
+ char *name, *absolute_filename;
+ char str[STRVERSIONLEN];
+ int i, 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);
@@ -3791,22 +3735,22 @@ add_ksymoops_symbols(struct obj_file *f, const char *filename,
* 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),
@@ -3819,11 +3763,11 @@ add_ksymoops_symbols(struct obj_file *f, const char *filename,
/* 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);
@@ -3838,13 +3782,13 @@ add_ksymoops_symbols(struct obj_file *f, const char *filename,
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 */
+ 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,
@@ -3891,9 +3835,10 @@ static void print_load_map(struct obj_file *f)
#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. */
@@ -3963,7 +3908,7 @@ int insmod_main(int argc, char **argv)
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;
#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
@@ -4027,7 +3972,7 @@ int insmod_main(int argc, char **argv)
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 that we have a complete path */
@@ -4039,7 +3984,6 @@ int insmod_main(int argc, char **argv)
if (k_version) { /* uname succeedd */
char *module_dir;
char *tmdn;
- char real_module_dir[FILENAME_MAX];
tmdn = concat_path_file(_PATH_MODULES, myuname.release);
/* Jump through hoops in case /lib/modules/`uname -r`
@@ -4047,36 +3991,37 @@ int insmod_main(int argc, char **argv)
* 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;
+ module_dir = xmalloc_readlink(tmdn);
+ if (!module_dir)
+ module_dir = xstrdup(tmdn);
recursive_action(module_dir, ACTION_RECURSE,
- check_module_name_match, 0, m_fullName, 0);
+ check_module_name_match, NULL, m_fullName, 0);
+ free(module_dir);
free(tmdn);
}
/* Check if we have found anything yet */
if (!m_filename || ((fp = fopen(m_filename, "r")) == NULL)) {
- char module_dir[FILENAME_MAX];
+ int r;
+ char *module_dir;
free(m_filename);
m_filename = NULL;
- if (realpath(_PATH_MODULES, module_dir) == NULL)
- strcpy(module_dir, _PATH_MODULES);
+ module_dir = xmalloc_readlink(_PATH_MODULES);
+ if (!module_dir)
+ module_dir = xstrdup(_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, ACTION_RECURSE,
- check_module_name_match, 0, m_fullName, 0)
+ 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)
) {
- if (m_filename == 0
- || ((fp = fopen(m_filename, "r")) == NULL)
- ) {
- bb_error_msg("%s: module not found", m_fullName);
- goto out;
- }
- } else
bb_error_msg_and_die("%s: module not found", m_fullName);
+ }
}
} else
m_filename = xstrdup(arg1);
@@ -4093,8 +4038,6 @@ int insmod_main(int argc, char **argv)
#endif
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;
@@ -4109,9 +4052,8 @@ int insmod_main(int argc, char **argv)
if (m_has_modinfo) {
m_version = new_get_module_version(f, m_strversion);
if (m_version == -1) {
- bb_error_msg("cannot find the kernel version the module was "
+ bb_error_msg_and_die("cannot find the kernel version the module was "
"compiled for");
- goto out;
}
}
@@ -4128,14 +4070,10 @@ int insmod_main(int argc, char **argv)
k_crcs = 0;
#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();
#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
m_crcs = 0;
@@ -4151,22 +4089,15 @@ int insmod_main(int argc, char **argv)
/* 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);
@@ -4181,22 +4112,18 @@ int insmod_main(int argc, char **argv)
/* Find current size of the module */
m_size = obj_load_size(f);
-
m_addr = create_module(m_name, m_size);
if (m_addr == -1) switch (errno) {
case EEXIST:
- 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
@@ -4222,7 +4149,7 @@ int insmod_main(int argc, char **argv)
exit_status = EXIT_SUCCESS;
-out:
+ out:
#if ENABLE_FEATURE_CLEAN_UP
if (fp)
fclose(fp);
@@ -4234,8 +4161,10 @@ out:
return exit_status;
}
-
-#endif
+#endif /* ENABLE_FEATURE_2_4_MODULES */
+/*
+ * End of big piece of 2.4-specific code
+ */
#if ENABLE_FEATURE_2_6_MODULES
@@ -4249,20 +4178,24 @@ static const char *moderror(int err)
{
switch (err) {
case ENOEXEC:
- return "Invalid module format";
+ return "invalid module format";
case ENOENT:
- return "Unknown symbol in module";
+ return "unknown symbol in module";
case ESRCH:
- return "Module has wrong symbol version";
+ return "module has wrong symbol version";
case EINVAL:
- return "Invalid parameters";
+ return "invalid parameters";
default:
return strerror(err);
}
}
-int insmod_ng_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-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, char **argv)
+#else
+static int insmod_ng_main(int argc, char **argv)
+#endif
{
long ret;
size_t len;
generated by cgit v1.1 at 2024-12-27 14:08:25 +0000