/**
* Inject a section from ET_REL object into ET_EXEC
* @param file
* @param sect
* @param mod
* @return
*/
static int elfsh_inject_etrel_section(elfshobj_t *file, elfshsect_t *sect, u_int mod)
{
elfsh_Shdr hdr;
elfshsect_t *enew;
char *newname;
char writable;
int mode;
char *data;
u_int modulo;
elfshsect_t *plt;
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
if (elfsh_dynamic_file(file) && NULL == (plt = elfsh_get_plt(file, NULL)))
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to get PLT", -1);
/* else create a new section */
hdr = elfsh_create_shdr(0, sect->shdr->sh_type, sect->shdr->sh_flags,
0, 0, sect->shdr->sh_size, 0, 0, 0, 0);
XALLOC(__FILE__, __FUNCTION__, __LINE__,newname, strlen(sect->parent->name) + strlen(sect->name) + 2, -1);
sprintf(newname, "%s%s", sect->parent->name, sect->name);
enew = elfsh_create_section(newname);
/* Copy the data */
XALLOC(__FILE__, __FUNCTION__, __LINE__,data, sect->shdr->sh_size, -1);
memcpy(data, sect->data, sect->shdr->sh_size);
/* Inject new section by top or after bss depending on its type */
writable = elfsh_get_section_writableflag(sect->shdr);
/* FreeBSD is incompatible with pre-interp injection */
ELFSH_SELECT_INJECTION(file,writable,mode);
if (mode == ELFSH_DATA_INJECTION)
modulo = sizeof(eresi_Addr);
else
{
/* modulo = mod; (to be uncommented one day) */
//modulo = elfsh_get_pagesize(file);
modulo = sizeof(eresi_Addr);
}
#if __DEBUG_RELADD__
printf("[DEBUG_RELADD] Mapping new section %s with data = %p \n", enew->name, data);
#endif
if (elfsh_insert_mapped_section(file, enew, hdr, data, mode, modulo) < 0)
goto bad;
enew = elfsh_get_section_by_name(file, newname, NULL, NULL, NULL);
if (enew == NULL)
goto bad;
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
bad:
XFREE(__FILE__, __FUNCTION__, __LINE__,newname);
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to inject ET_REL section", -1);
}
/**
* @brief Copy the PLT of an ET_EXEC object for the ALTPLT technique.
* and the GOT of an ET_EXEC object for the ALTGOT technique.
* @param file Host file.
* @param mod Always inject sections with size being a multiple of mod.
* @return Success (0) or Error (-1).
*/
int elfsh_relink_plt(elfshobj_t *file, u_int mod)
{
elfshsect_t *got;
elfshsect_t *plt;
elfshsect_t *symtab;
elfshsect_t *dynsym;
elfshsect_t *prolog;
elfshsect_t *extplt = NULL;
elfshsect_t *altgot = NULL; /* shut the nice talkative */
elfshsect_t *enew = NULL; /* compiler also know as gcc */
elfsh_Shdr hdr;
elfsh_Sym *sym;
elfsh_Sym newsym;
char buf[BUFSIZ];
u_int off;
u_int entsz;
int mode;
eresi_Addr addr;
char *prologdata;
u_int sz;
char *name;
u_char ostype;
eresi_Addr diff;
u_int extplt_size;
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
/* Get PLT */
if (file->secthash[ELFSH_SECTION_ALTPLT] != NULL)
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
plt = elfsh_get_plt(file, NULL);
if (NULL == plt)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"PLT section not found", -1);
entsz = elfsh_get_pltentsz(file);
if (entsz < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Failed to get PLT entry size", -1);
/* Get GOT (recent ld call it .got.plt) */
got = elfsh_get_gotsct(file);
if (NULL == got)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"GOT section not found", -1);
/* Get symtabs */
if (NULL == elfsh_get_dynsymtab(file, NULL))
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"DYNSYM not found", -1);
if (NULL == elfsh_get_symtab(file, NULL))
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"SYMTAB not found", -1);
/* Some fingerprint */
ostype = elfsh_get_ostype(file);
if (ostype == ELFSH_OS_ERROR)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid OS target", -1);
/* Insert alternative .plt */
dynsym = file->secthash[ELFSH_SECTION_DYNSYM];
symtab = file->secthash[ELFSH_SECTION_SYMTAB];
/* FreeBSD and BeoS is incompatible with pre-interp injection */
/* Solaris needs self-mutating code for ALTPLT technique */
/* %gp offsets on ALPHA/MIPS requires data injection */
ELFSH_SELECT_INJECTION(file,NULL,mode);
/* Map .alt.plt.prolog on ALPHA, or .alt.got.prolog on MIPS */
if (FILE_IS_MIPS(file) || FILE_IS_ALPHA64(file))
{
if (FILE_IS_MIPS(file))
{
name = ELFSH_SECTION_NAME_ALTGOTPROLOG;
sz = 28;
}
else
{
name = ELFSH_SECTION_NAME_ALTPLTPROLOG;
sz = 48;
}
prolog = elfsh_create_section(name);
hdr = elfsh_create_shdr(0, SHT_PROGBITS, SHF_EXECINSTR | SHF_ALLOC,
0, 0, sz, 0, 0, 0, 0);
XALLOC(__FILE__, __FUNCTION__, __LINE__, prologdata, sz, -1);
if (elfsh_insert_mapped_section(file,
prolog, hdr, prologdata,
mode, mod) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
".alt.{plt,got}.prolog insertion failed", -1);
enew = elfsh_get_section_by_name(file, name, NULL, NULL, NULL);
if (enew == NULL)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
".alt.{plt,got}.prolog insertion failed", -1);
file->secthash[ELFSH_SECTION_ALTPLTPROLOG] = enew;
}
/* Map .alt.plt (or .pad.got on MIPS)
On MIPS we use .pad.got in order to align .alt.got on a 0x1000
bound boundary.
On ALPHA and SPARC, .alt.plt will be relocated instead of .plt
*/
sz = plt->shdr->sh_size;
if (FILE_IS_MIPS(file))
{
addr = enew->shdr->sh_addr + enew->shdr->sh_size;
if ((addr - (got->shdr->sh_addr)) % 1024)
sz = 1024 - ((addr - (got->shdr->sh_addr)) % 1024);
XALLOC(__FILE__, __FUNCTION__, __LINE__, prologdata, sz, -1);
memset(prologdata, 0x00, sz);
name = ELFSH_SECTION_NAME_PADGOT;
}
else
{
XALLOC(__FILE__, __FUNCTION__, __LINE__, prologdata, sz, -1);
memcpy(prologdata, elfsh_readmem(plt), sz);
name = ELFSH_SECTION_NAME_ALTPLT;
}
enew = elfsh_create_section(name);
hdr = elfsh_create_shdr(0, SHT_PROGBITS, SHF_EXECINSTR | SHF_ALLOC,
0, 0, sz, 0, 0, 0, 0);
if (elfsh_insert_mapped_section(file, enew, hdr, prologdata, mode, mod) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
".alt.plt|.pad.got insertion failed", -1);
enew = elfsh_get_section_by_name(file, name, NULL, NULL, NULL);
if (enew == NULL)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
".alt.plt|.pad.got insertion failed", -1);
file->secthash[ELFSH_SECTION_ALTPLT] = enew;
/* Map .alt.got (all architectures except SPARC) */
/* On IA32, remap GOT with a doubled size for non-present symbol resolving */
if (FILE_IS_MIPS(file) || FILE_IS_ALPHA64(file) || FILE_IS_IA32(file))
{
sz = (FILE_IS_MIPS(file) ? got->shdr->sh_size :
FILE_IS_IA32(file) ? got->shdr->sh_size * 4 :
plt->shdr->sh_size / elfsh_get_pltentsz(file) * sizeof(eresi_Addr));
altgot = elfsh_create_section(ELFSH_SECTION_NAME_ALTGOT);
hdr = elfsh_create_shdr(0, SHT_PROGBITS, SHF_ALLOC | SHF_WRITE,
0, 0, sz, 0, 0, 0, sizeof(eresi_Addr));
XALLOC(__FILE__, __FUNCTION__, __LINE__, prologdata, sz, -1);
memcpy(prologdata, elfsh_readmem(got), got->shdr->sh_size);
if (elfsh_insert_mapped_section(file, altgot, hdr, prologdata,
ELFSH_DATA_INJECTION, mod) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
".alt.got insertion failed", -1);
altgot = elfsh_get_section_by_name(file, ELFSH_SECTION_NAME_ALTGOT,
NULL, NULL, NULL);
if (altgot == NULL)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
".alt.got insertion failed", -1);
file->secthash[ELFSH_SECTION_ALTGOT] = altgot;
altgot->curend = got->shdr->sh_size;
memset(elfsh_readmem(altgot) + got->shdr->sh_size, 0x00, got->shdr->sh_size);
altgot->shdr->sh_entsize = sizeof(eresi_Addr);
}
/* Insert EXTPLT in order to be able to resolve non present symbols */
if (FILE_IS_IA32(file))
{
extplt_size = plt->shdr->sh_size * 2;
extplt = elfsh_create_section(ELFSH_SECTION_NAME_EXTPLT);
hdr = elfsh_create_shdr(0, SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR,
0, 0, extplt_size, 0, 0, 0, 0);
XALLOC(__FILE__, __FUNCTION__, __LINE__, prologdata, plt->shdr->sh_size, -1);
memcpy(prologdata, elfsh_readmem(plt), plt->shdr->sh_size);
if (elfsh_insert_mapped_section(file, extplt, hdr, prologdata,
mode, mod) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
".ext.plt insertion failed", -1);
extplt = elfsh_get_section_by_name(file, ELFSH_SECTION_NAME_EXTPLT,
NULL, NULL, NULL);
if (extplt == NULL)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
".ext.plt insertion failed", -1);
file->secthash[ELFSH_SECTION_EXTPLT] = extplt;
extplt->curend = elfsh_get_first_pltentsz(file);
}
/* Loop on .plt and inject 'old_symnam' symbols */
for (off = 0; off < plt->shdr->sh_size; off += entsz)
{
/* SPARC does not have ALTGOT */
if (FILE_IS_MIPS(file) || FILE_IS_ALPHA64(file) || FILE_IS_IA32(file))
diff = (uint32_t) altgot->shdr->sh_addr - got->shdr->sh_addr;
else
diff = 0;
/* Special case for the first plt entry */
if (off == 0 && elfsh_altplt_firstent(enew, &off, symtab, file, extplt, plt, diff) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"ALTPLT on first entry failed", -1);
else if (off == 0)
continue;
/* Get the existing symbol name for this plt entry ... */
sym = elfsh_get_sym_by_value(elfsh_readmem(dynsym),
dynsym->shdr->sh_size / sizeof(elfsh_Sym),
plt->shdr->sh_addr + off,
NULL, ELFSH_EXACTSYM);
/* New versions of ld do not fill the vaddr of dynamic symbols,
do it ourself. Do not insert old symbol in emergency cases */
if (sym == NULL)
{
if ((sym = elfsh_restore_dynsym(file, plt, off, dynsym)) == NULL)
continue;
name = elfsh_get_dynsymbol_name(file, sym);
/* __gmon_start__ should not be resolved
if it was not already done by gcc */
if (name && !strcmp(name, "__gmon_start__"))
sym->st_value = 0x0;
}
/* ... and we inject the 'old' occurence symbol pointing in
.alt.plt (.plt on MIPS) */
if (!FILE_IS_MIPS(file))
addr = enew->shdr->sh_addr + off;
else
addr = plt->shdr->sh_addr + off;
#if __BYTE_ORDER == __BIG_ENDIAN
if (file->hdr->e_ident[EI_DATA] == ELFDATA2LSB)
#elif __BYTE_ORDER == __LITTLE_ENDIAN
if (file->hdr->e_ident[EI_DATA] == ELFDATA2MSB)
#else
#error Unexpected __BYTE_ORDER !
#endif
addr = swaplong(addr);
/* Injection */
name = elfsh_get_dynsymbol_name(file, sym);
newsym = elfsh_create_symbol(addr, entsz, STT_FUNC, 0, 0, 0);
snprintf(buf, BUFSIZ, "old_%s", name);
if (elfsh_insert_symbol(symtab, &newsym, buf) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"old_* symbol injection failed", -1);
#if __DEBUG_COPYPLT__
printf("[DEBUG_COPYPLT] Symbol at .plt + %u injected"
" succesfully (%s) \n", off, buf);
#endif
/* On ALPHA, shift the relocation offset from .got to .alt.got to avoid
hooks removing when calling back the original function. */
if (FILE_IS_ALPHA64(file) &&
elfsh_shift_alpha_relocs(file, name, altgot, off) < 0)
continue;
/* Reencode the PLT entry to use the alternative GOT */
/* This condition is for compatibility with other archs where EXTPLT
is not yet supported. For those we do not enter the hook */
if (FILE_IS_IA32(file))
{
diff = (eresi_Addr) altgot->shdr->sh_addr - got->shdr->sh_addr;
elfsh_encodeplt(file, plt, diff, off);
if (file->hdr->e_type == ET_DYN)
elfsh_encodeplt(file, file->secthash[ELFSH_SECTION_ALTPLT],
diff, off);
diff = (eresi_Addr) altgot->shdr->sh_addr - got->shdr->sh_addr +
got->shdr->sh_size;
elfsh_encodeplt(file, extplt, diff, off);
}
}
/* Activate ALTGOT */
if (elfsh_redirect_pltgot(file, altgot, got, plt, enew) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"PLTGOT redirection failed", -1);
/* Activate EXTPLT */
if (elfsh_extplt_mirror_sections(file) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Section mirroring failed", -1);
#if __DEBUG_COPYPLT__
printf("[DEBUG_COPYPLT] Section Mirrored Successfully ! \n");
#endif
/* Everything is 0k4y */
if (elfsh_sync_sorted_symtab(symtab) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"symtab synchronisation failed", -1);
if (elfsh_sync_sorted_symtab(dynsym) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"dynsym synchronisation failed", -1);
elfsh_sync_sectnames(file);
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
}
/**
* Relocate the just injected section
* @param enew
* @param reltab
* @param stage
* @return
*/
static int elfsh_relocate_etrel_section(elfshsect_t *enew,
elfshsect_t *reltab,
u_char stage)
{
elfsh_Rel *cur;
volatile u_int index;
elfsh_Sym *sym;
volatile u_int size;
eresi_Addr *dword;
eresi_Addr addr;
char *name;
char tmpname[BUFSIZ];
elfshsect_t *sect;
u_int entsz;
elfshsect_t *plt;
void *data;
elfsh_Half symtype;
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
/* ET_REL object is not mapped we use unconditionaly
the ondisk relocation tables for such operation */
data = reltab->data;
#if __DEBUG_RELADD__
fprintf(stderr, "[DEBUG_RELADD] Using reloc table from %s [%s] data at %p \n",
reltab->parent->name, reltab->name, data);
#endif
/* Loop on the relocation table entries */
size = (reltab->shdr->sh_type == SHT_RELA ?
sizeof(elfsh_Rela) : sizeof(elfsh_Rel));
size = reltab->shdr->sh_size / size;
plt = elfsh_get_plt(enew->parent, NULL);
if (NULL == plt && elfsh_dynamic_file(enew->parent))
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to get plt", -1);
entsz = elfsh_get_pltentsz(enew->parent);
if (entsz < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to get pltentsz", -1);
for (index = 0; index < size; index++)
{
#if __DEBUG_RELADD__
fprintf(stderr, "[DEBUG_RELADD] relocation loop stage %u for section %s index %u \n",
stage, enew->name, index);
#endif
/* We try a enew relocation now that the ET_REL dependence is mapped */
retry:
/* Get symbol value in ET_REL */
cur = (reltab->shdr->sh_type == SHT_RELA ?
(void *) (((elfsh_Rela *) data) + index) :
(void *) (((elfsh_Rel *) data) + index));
sym = elfsh_get_symbol_from_reloc(reltab->parent, cur);
name = elfsh_get_symname_from_reloc(reltab->parent, cur);
if (sym == NULL || name == NULL)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to find symbol in ET_REL", -1);
/* Grab a pointer on the dword that need to be relocated */
dword = (eresi_Addr *) ((char *) elfsh_readmem(enew) + cur->r_offset);
/*
** If symbol type is NOTYPE, we use ET_EXEC symtab, else if
** symbol link is COMMON, we use ET_REL symbol inserted in ET_EXEC
** during BSS sizescan in bss.c:elfsh_find_bsslen()
*/
symtype = elfsh_get_symbol_type(sym);
if (elfsh_get_symbol_bind(sym) != STB_LOCAL && /* patch BEOS */
(symtype == STT_NOTYPE || elfsh_get_symbol_link(sym) == SHN_COMMON))
{
if (stage == ELFSH_RELOC_STAGE2 && !strstr(name, "old_"))
continue;
/* If the symbol is not found and we are still in
the first stage relocation, just pass it */
sym = elfsh_get_metasym_by_name(enew->parent, name);
if (!sym)
{
switch (elfsh_find_relocsym(enew, reltab, &sym, name, stage, symtype))
{
case 2:
#if __DEBUG_STATIC__
fprintf(stderr, "[DEBUG_STATIC] RETRY\n");
#endif
goto retry;
break;
case 0:
continue;
case 1:
break;
case -1:
default:
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to satisfy symbol in ET_REL", -1);
}
}
addr = sym->st_value;
#if __DEBUG_RELADD__
fprintf(stderr, "[DEBUG_RELADD] Relocate using existing symbol %-20s " AFMT "]\n",
name, (eresi_Addr) addr);
#endif
}
/* Compute addr giving the injected section's vaddr in ET_EXEC */
else
{
/* All the following relocs are computed in stage 1 */
if (stage == ELFSH_RELOC_STAGE2)
continue;
/* Find target section in ET_REL */
sect = elfsh_get_section_by_index(reltab->parent, sym->st_shndx,
NULL, NULL);
if (sect == NULL)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Cant find extracted section in ET_REL", -1);
#if __DEBUG_RELADD__
fprintf(stderr, "[DEBUG_RELADD] Found -%s- section (idx = %u), now looking at "
"injected base address\n", sect->name, sect->index);
#endif
/* Find corresponding inserted section in ET_EXEC */
snprintf(tmpname, sizeof(tmpname), "%s%s", reltab->parent->name, sect->name);
sect = elfsh_get_section_by_name(enew->parent, tmpname, NULL, NULL, NULL);
if (sect == NULL)
{
#if __DEBUG_RELADD__
elfsh_print_sectlist(reltab->parent, "HEH");
fprintf(stderr, "[DEBUG_RELADD] Did not found %s section (sym = %s) \n",
tmpname, name);
#endif
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Cant find inserted section in ET_EXEC", -1);
}
/* Compute pointer value */
addr = sect->shdr->sh_addr;
addr += ((elfsh_get_symbol_type(sym) == STT_SECTION &&
!FILE_IS_SPARC(sect->parent) &&
!FILE_IS_ALPHA64(sect->parent) &&
!FILE_IS_MIPS(sect->parent)) ?
*dword : sym->st_value);
#if __DEBUG_RELADD__
fprintf(stderr, "[DEBUG_RELADD] Relocate using section %-20s base [-> " AFMT "] \n",
sect->name, (eresi_Addr) addr);
#endif
}
/* Perform relocation */
if (elfsh_relocate_entry(enew, cur, dword, addr, reltab) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to relocate entry", -1);
}
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
}
/**
* Load all the part of the binary.
* This function should not be used by e2dbg
* @param file
* @return
*/
int elfsh_read_obj(elfshobj_t *file)
{
elfshsect_t *actual;
int index;
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
if (file->read)
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
if (file->sht == NULL && NULL == elfsh_get_sht(file, NULL))
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to grab SHT", -1);
if (NULL == elfsh_get_pht(file, NULL) && file->hdr->e_type != ET_REL)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unable to grab PHT", -1);
#if __DEBUG_MAP__
puts("[DEBUG:read_obj] Loading all known typed sections\n");
#endif
/* Fill multiple relocation sections */
for (index = 0; NULL !=
(actual = elfsh_get_reloc(file, index, NULL));
index++);
/*
** Load sections placed after symtab
** Added for Solaris
*/
elfsh_get_comments(file);
elfsh_get_dwarf(file);
elfsh_get_stab(file, NULL);
if (file->hdr->e_type == ET_CORE)
{
elfsh_get_core_notes(file);
goto out;
}
/*
** We cannot use simply elfsh_get_anonymous_section() here
** because the object's section hash ptrs would not be filled.
*/
elfsh_get_symtab(file, NULL);
/* Fixup stuffs in the SHT */
elfsh_fixup(file);
elfsh_get_dynsymtab(file, NULL);
elfsh_get_stab(file, NULL);
elfsh_get_dynamic(file, NULL);
elfsh_get_ctors(file, NULL);
elfsh_get_dtors(file, NULL);
elfsh_get_got(file, NULL);
elfsh_get_interp(file);
elfsh_get_versymtab(file, NULL);
elfsh_get_verneedtab(file, NULL);
elfsh_get_verdeftab(file, NULL);
elfsh_get_hashtable(file, NULL);
//elfsh_get_comments(file);
elfsh_get_plt(file, NULL);
/* Fill the multiple notes sections */
for (index = 0; NULL != elfsh_get_notes(file, index); index++);
/* Loop on the section header table and load all unknown-typed sections */
for (actual = file->sectlist; actual; actual = actual->next)
{
/* Fix first section size */
if (actual->shdr->sh_size == 0 && actual->next &&
actual->next->shdr->sh_offset != actual->shdr->sh_offset &&
actual->next->shdr->sh_addr != actual->shdr->sh_addr)
actual->shdr->sh_size =
actual->next->shdr->sh_offset - actual->shdr->sh_offset;
/* If the section data has to be loaded, load it */
/* In case of bss, only load if BSS data is inserted in the file */
if (actual->data == NULL && actual->shdr->sh_size)
{
if ((actual->shdr->sh_type == SHT_NOBITS &&
actual->shdr->sh_offset == actual->next->shdr->sh_offset) ||
(actual->next != NULL && actual->next->shdr->sh_offset == actual->shdr->sh_offset))
continue;
#if __DEBUG_MAP__
printf("[LIBELFSH] Loading anonymous section %15s \n",
elfsh_get_section_name(file, actual));
#endif
elfsh_get_anonymous_section(file, actual);
}
}
/* Fixup various symbols like dynamic ones that are NULL */
/* Non fatal error */
if (file->secthash[ELFSH_SECTION_DYNSYM])
elfsh_fixup_dynsymtab(file->secthash[ELFSH_SECTION_DYNSYM]);
out:
/* We close the file descriptor after file mapping so we can open more files */
if (file->fd >= 0) {
#if __DEBUG_MAP__
printf("[LIBELFSH] Closing descriptor %d \n",
file->fd);
#endif
XCLOSE(file->fd, -1);
/* neutralize file descriptor */
file->fd = -1;
}
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
}
