}
}
+static void free_modinfo(struct module *mod)
+{
+ struct module_attribute *attr;
+ int i;
+
+ for (i = 0; (attr = modinfo_attrs[i]); i++) {
+ if (attr->free)
+ attr->free(mod);
+ }
+}
+
#ifdef CONFIG_KALLSYMS
/* lookup symbol in given range of kernel_symbols */
static unsigned long layout_symtab(struct module *mod,
Elf_Shdr *sechdrs,
unsigned int symindex,
+ unsigned int strindex,
const Elf_Ehdr *hdr,
- const char *secstrings)
+ const char *secstrings,
+ unsigned long *pstroffs,
+ unsigned long *strmap)
{
unsigned long symoffs;
Elf_Shdr *symsect = sechdrs + symindex;
+ Elf_Shdr *strsect = sechdrs + strindex;
const Elf_Sym *src;
+ const char *strtab;
unsigned int i, nsrc, ndst;
/* Put symbol section at end of init part of module. */
src = (void *)hdr + symsect->sh_offset;
nsrc = symsect->sh_size / sizeof(*src);
+ strtab = (void *)hdr + strsect->sh_offset;
for (ndst = i = 1; i < nsrc; ++i, ++src)
- if (is_core_symbol(src, sechdrs, hdr->e_shnum))
+ if (is_core_symbol(src, sechdrs, hdr->e_shnum)) {
+ unsigned int j = src->st_name;
+
+ while(!__test_and_set_bit(j, strmap) && strtab[j])
+ ++j;
++ndst;
+ }
/* Append room for core symbols at end of core part. */
symoffs = ALIGN(mod->core_size, symsect->sh_addralign ?: 1);
mod->core_size = symoffs + ndst * sizeof(Elf_Sym);
+ /* Put string table section at end of init part of module. */
+ strsect->sh_flags |= SHF_ALLOC;
+ strsect->sh_entsize = get_offset(mod, &mod->init_size, strsect,
+ strindex) | INIT_OFFSET_MASK;
+ DEBUGP("\t%s\n", secstrings + strsect->sh_name);
+
+ /* Append room for core symbols' strings at end of core part. */
+ *pstroffs = mod->core_size;
+ __set_bit(0, strmap);
+ mod->core_size += bitmap_weight(strmap, strsect->sh_size);
+
return symoffs;
}
unsigned int symindex,
unsigned int strindex,
unsigned long symoffs,
- const char *secstrings)
+ unsigned long stroffs,
+ const char *secstrings,
+ unsigned long *strmap)
{
unsigned int i, ndst;
const Elf_Sym *src;
Elf_Sym *dst;
+ char *s;
mod->symtab = (void *)sechdrs[symindex].sh_addr;
mod->num_symtab = sechdrs[symindex].sh_size / sizeof(Elf_Sym);
if (!is_core_symbol(src, sechdrs, shnum))
continue;
dst[ndst] = *src;
+ dst[ndst].st_name = bitmap_weight(strmap, dst[ndst].st_name);
++ndst;
}
mod->core_num_syms = ndst;
+
+ mod->core_strtab = s = mod->module_core + stroffs;
+ for (*s = 0, i = 1; i < sechdrs[strindex].sh_size; ++i)
+ if (test_bit(i, strmap))
+ *++s = mod->strtab[i];
}
#else
static inline unsigned long layout_symtab(struct module *mod,
Elf_Shdr *sechdrs,
unsigned int symindex,
- const Elf_Hdr *hdr,
- const char *secstrings)
+ unsigned int strindex,
+ const Elf_Ehdr *hdr,
+ const char *secstrings,
+ unsigned long *pstroffs,
+ unsigned long *strmap)
{
+ return 0;
}
+
static inline void add_kallsyms(struct module *mod,
Elf_Shdr *sechdrs,
unsigned int shnum,
unsigned int symindex,
unsigned int strindex,
unsigned long symoffs,
- const char *secstrings)
+ unsigned long stroffs,
+ const char *secstrings,
+ const unsigned long *strmap)
{
}
#endif /* CONFIG_KALLSYMS */
struct module *mod;
long err = 0;
void *percpu = NULL, *ptr = NULL; /* Stops spurious gcc warning */
-#ifdef CONFIG_KALLSYMS
- unsigned long symoffs;
-#endif
+ unsigned long symoffs, stroffs, *strmap;
+
mm_segment_t old_fs;
DEBUGP("load_module: umod=%p, len=%lu, uargs=%p\n",
/* Don't keep modinfo and version sections. */
sechdrs[infoindex].sh_flags &= ~(unsigned long)SHF_ALLOC;
sechdrs[versindex].sh_flags &= ~(unsigned long)SHF_ALLOC;
-#ifdef CONFIG_KALLSYMS
- /* Keep string table for decoding later. */
- sechdrs[strindex].sh_flags |= SHF_ALLOC;
-#endif
/* Check module struct version now, before we try to use module. */
if (!check_modstruct_version(sechdrs, versindex, mod)) {
goto free_hdr;
}
+ strmap = kzalloc(BITS_TO_LONGS(sechdrs[strindex].sh_size)
+ * sizeof(long), GFP_KERNEL);
+ if (!strmap) {
+ err = -ENOMEM;
+ goto free_mod;
+ }
+
if (find_module(mod->name)) {
err = -EEXIST;
goto free_mod;
this is done generically; there doesn't appear to be any
special cases for the architectures. */
layout_sections(mod, hdr, sechdrs, secstrings);
- symoffs = layout_symtab(mod, sechdrs, symindex, hdr, secstrings);
+ symoffs = layout_symtab(mod, sechdrs, symindex, strindex, hdr,
+ secstrings, &stroffs, strmap);
/* Do the allocs. */
ptr = module_alloc_update_bounds(mod->core_size);
sechdrs[pcpuindex].sh_size);
add_kallsyms(mod, sechdrs, hdr->e_shnum, symindex, strindex,
- symoffs, secstrings);
+ symoffs, stroffs, secstrings, strmap);
+ kfree(strmap);
+ strmap = NULL;
if (!mod->taints) {
struct _ddebug *debug;
synchronize_sched();
module_arch_cleanup(mod);
cleanup:
+ free_modinfo(mod);
kobject_del(&mod->mkobj.kobj);
kobject_put(&mod->mkobj.kobj);
free_unload:
module_unload_free(mod);
#if defined(CONFIG_MODULE_UNLOAD) && defined(CONFIG_SMP)
- free_init:
percpu_modfree(mod->refptr);
+ free_init:
#endif
module_free(mod, mod->module_init);
free_core:
percpu_modfree(percpu);
free_mod:
kfree(args);
+ kfree(strmap);
free_hdr:
vfree(hdr);
return ERR_PTR(err);
#ifdef CONFIG_KALLSYMS
mod->num_symtab = mod->core_num_syms;
mod->symtab = mod->core_symtab;
+ mod->strtab = mod->core_strtab;
#endif
module_free(mod, mod->module_init);
mod->module_init = NULL;
struct modversion_info *ver,
struct kernel_param *kp,
struct kernel_symbol *ks,
- struct marker *marker,
struct tracepoint *tp)
{
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff