char * version_needed::lookup_version(Elf32_Half ver)
{
current_entry = reinterpret_cast<Elf32_Verneed *>(ver_needed);
while(current_entry != NULL)
{
if (current_entry->vn_aux == 0)
current_aux_entry = NULL;
else
current_aux_entry = reinterpret_cast<Elf32_Vernaux *>(reinterpret_cast<char *>(current_entry) +
convert_endian(4, current_entry->vn_aux, match_endian));
while (current_aux_entry != NULL)
{
if (get_cur_other() == ver) /* found! */
return get_cur_vername();
if (current_aux_entry->vna_next == 0)
current_aux_entry = NULL;
else
current_aux_entry = reinterpret_cast<Elf32_Vernaux *>(reinterpret_cast<char *>(current_aux_entry) +
convert_endian(4, current_aux_entry->vna_next, match_endian));
}
if (current_entry->vn_next == 0)
current_entry = NULL;
else
current_entry = reinterpret_cast<Elf32_Verneed *>(reinterpret_cast<char *>(current_entry) +
convert_endian(4, current_entry->vn_next, match_endian));
}
return NULL;
}
void write_ld_first(char *args, t_size *p, int fd, t_lab *lab)
{
short int ind;
int direct;
if (args[0] == '%' && args[1] != ':')
{
args++;
direct = my_getnbr(args);
convert_endian(&direct, my_endian());
p->len += write(fd, &direct, sizeof(int));
}
else if (args[0] != '%')
{
ind = my_getnbr(args);
convert_short_endian(&ind, my_endian());
p->len += write(fd, &ind, sizeof(short int));
}
else
{
direct = find_good_lab(lab, args) - p->size;
convert_endian(&direct, my_endian());
p->len += write(fd, &direct, sizeof(int));
}
}
Elf32_Word dynamic_relocations::read_info (unsigned int ndx) {
if (ndx >= size)
return 0;
if (use == AC_USE_REL)
return convert_endian(4, rel[ndx].r_info, match_endian);
else if (use == AC_USE_RELA)
return convert_endian(4, rela[ndx].r_info, match_endian);
return 0;
}
bool ac_rtld::detect_static_glibc(int fd, bool match_endian) {
Elf32_Ehdr ehdr;
Elf32_Shdr shdr;
unsigned i;
lseek(fd, 0, SEEK_SET);
//Test if it's an ELF file
if ((read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr)) || // read header
(strncmp((char *)ehdr.e_ident, ELFMAG, 4) != 0) || // test elf magic number
0) {
return false;
}
// first load the section name string table
char *string_table = NULL;
int shoff = convert_endian(4,ehdr.e_shoff, match_endian);
short shndx = convert_endian(2,ehdr.e_shstrndx, match_endian);
short shsize = convert_endian(2,ehdr.e_shentsize, match_endian);
lseek(fd, shoff+(shndx*shsize), SEEK_SET);
if (read(fd, &shdr, sizeof(shdr)) != sizeof(shdr)) {
return false;
}
string_table = (char *) malloc(convert_endian(4,shdr.sh_size, match_endian));
lseek(fd, convert_endian(4,shdr.sh_offset, match_endian), SEEK_SET);
if (read(fd, string_table, convert_endian(4,shdr.sh_size, match_endian)) !=
(signed)convert_endian(4,shdr.sh_size, match_endian)) {
free (string_table);
return false;
}
for (i=0; i<convert_endian(2,ehdr.e_shnum, match_endian); i++) {
lseek(fd, shoff + shsize*i, SEEK_SET);
if (read(fd, &shdr, sizeof(shdr)) != sizeof(shdr)) {
free (string_table);
return false;
}
if (!strncmp(string_table+convert_endian(4,shdr.sh_name, match_endian),
"__libc", 6)) {
this->glibc = true;
free(string_table);
return true;
}
}
free(string_table);
return false;
}
char * version_definitions::get_cur_name(){
Elf32_Verdaux *aux;
if (current_entry == NULL) return 0;
if (current_entry->vd_aux == 0) return 0;
aux = reinterpret_cast<Elf32_Verdaux *>(reinterpret_cast<char *>(current_entry) + current_entry->vd_aux);
return (char *) strtab + convert_endian(4, aux->vda_name, match_endian);
}
bool version_needed::set_entry (char * filename)
{
current_entry = reinterpret_cast<Elf32_Verneed *>(ver_needed);
while(current_entry != NULL)
{
if (!strcmp(filename, get_cur_filename()))
{
current_aux_entry = reinterpret_cast<Elf32_Vernaux *>(reinterpret_cast<char *>(current_entry) +
convert_endian(4, current_entry->vn_aux, match_endian));
return true;
}
if (current_entry->vn_next == 0)
current_entry = NULL;
else
current_entry = reinterpret_cast<Elf32_Verneed *>(reinterpret_cast<char *>(current_entry) +
convert_endian(4, current_entry->vn_next, match_endian));
}
return false;
}
bool version_definitions::set_entry(Elf32_Half index)
{
current_entry = reinterpret_cast<Elf32_Verdef *>(ver_def);
while (current_entry != NULL)
{
if (convert_endian(2, current_entry->vd_ndx, match_endian) == index)
return true;
if (current_entry->vd_next == 0)
current_entry = NULL;
else
current_entry = reinterpret_cast<Elf32_Verdef *>(reinterpret_cast<char *>(current_entry) + convert_endian(4, current_entry->vd_next, match_endian));
}
return false;
}
/*
* Write archive to file
*/
static int output_archive(const char *path)
{
FILE *fp;
convert_endian();
fp = fopen(path, "wb");
if (!fp) {
fprintf(stderr, "Error: failed to open %s\n", path);
fclose(fp);
return -1;
}
if (fwrite(archive, sizeof(char), archive->size, fp) != archive->size) {
fprintf(stderr, "Error: failed to write to %s\n", path);
fclose(fp);
return -1;
}
fclose(fp);
printf("Wrote archive to %s\n", path);
return 0;
}
bool version_definitions::set_entry(char *vername, Elf32_Word hash)
{
current_entry = reinterpret_cast<Elf32_Verdef *>(ver_def);
while (current_entry != NULL)
{
if (get_cur_hash() == hash)
{
if (!strcmp(get_cur_name(), vername))
return true;
}
if (current_entry->vd_next == 0)
current_entry = NULL;
else
current_entry = reinterpret_cast<Elf32_Verdef *>(reinterpret_cast<char *>(current_entry) + convert_endian(4, current_entry->vd_next, match_endian));
}
return false;
}
Elf32_Sword dynamic_relocations::read_addend (unsigned int ndx) {
if (use != AC_USE_RELA || ndx >= size)
return 0;
return convert_endian(4, rela[ndx].r_addend, match_endian);
}
/* Get current aux entry hash value */
Elf32_Word version_needed::get_cur_hash()
{
if (current_aux_entry == NULL) return 0;
return convert_endian(4, current_aux_entry->vna_hash, match_endian);
}
bool version_needed::go_next_aux_entry()
{
if (current_aux_entry == NULL || current_aux_entry->vna_next == 0) return false;
current_aux_entry = reinterpret_cast<Elf32_Vernaux *> (reinterpret_cast<char *>(current_aux_entry) + convert_endian(4, current_aux_entry->vna_next, match_endian));
return true;
}
/* Get current aux entry other field */
Elf32_Half version_needed::get_cur_other()
{
if (current_aux_entry == NULL) return 0;
return convert_endian(2, current_aux_entry->vna_other, match_endian);
}
int process_elf(char* filename, hash_node **hashtable)
{
Elf32_Ehdr ehdr;
Elf32_Shdr shdr;
Elf32_Phdr phdr;
int fd;
unsigned int i, j;
unsigned int match_endian;
int shoff; /* Section header offset */
short shsize; /* Section header size */
short type; /* ELF file type */
char sections_patched = 0;
char dynamic_found = FALSE;
union _endian_test {
char bytes[4];
unsigned int word;
} endian_test;
/* Open ELF file */
if (!filename || ((fd = open(filename, O_RDWR)) == -1)) {
perror("Fatal error - open file");
return -1;
}
/* Test if it is an ELF file */
if ((read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr)) || // read header
(strncmp((char *)ehdr.e_ident, ELFMAG, 4) != 0) || // test elf magic number
0) {
close(fd);
fprintf(stderr, "Failure opening file: Not an ELF file or magic number mismatches.\n");
exit(EXIT_FAILURE);
}
/* Our program is running little or big endian machine? */
endian_test.word = 1;
if (endian_test.bytes[0] == 1)
match_endian = 0; /* little */
else
match_endian = 1; /* big */
/* Big or little? */
if (ehdr.e_ident[EI_DATA] == ELFDATA2MSB) /* Big endian */
{
match_endian = !(match_endian ^ 1);
}
else if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB) /* Little endian */
{
match_endian = !(match_endian ^ 0);
}
else
{
fprintf(stderr, "Warning! Can't determine if ELF file is little or big endian. Machine default assumed.\n");
}
/* Testing file type */
type = convert_endian(2, ehdr.e_type, match_endian);
if (type != ET_EXEC && type != ET_REL && type != ET_DYN)
{
close(fd);
fprintf(stderr, "Can't patch this file: this ELF is not a relocatable file, executable or DSO.\n");
return ACRELCONVERT_FUNC_ERROR;
}
/* Trying to locate section header */
shoff = convert_endian(4,ehdr.e_shoff, match_endian);
shsize = convert_endian(2,ehdr.e_shentsize, match_endian);
if (shoff == 0 || shsize == 0)
{
unsigned int segment_type;
short phnum = convert_endian(2, ehdr.e_phnum, match_endian);
short phentsize = convert_endian(2, ehdr.e_phentsize, match_endian);
int phoff = convert_endian(4, ehdr.e_phoff, match_endian);
fprintf(stderr, "Warning: File's section header has been striped out. Can't locate ordinary relocation sections. We will still try patching dynamic relocations...\n");
if (type != ET_DYN)
{
fprintf(stderr, "Error: File is not a dynamic shared object, can't continue without section header.\n");
close(fd);
return ACRELCONVERT_FUNC_ERROR;
}
if (phnum == 0 || phoff == 0)
{
fprintf(stderr, "Fatal error: Program headers are missing.\n");
close(fd);
return ACRELCONVERT_FUNC_ERROR;
}
/* Iterates through all program headers and locate the DYNAMIC segment type */
for (i=0; i < phnum; i++)
{
/* No need to continue looping if the DYNAMIC segment was already found.*/
if (dynamic_found)
break;
lseek(fd, phoff + phentsize * i, SEEK_SET);
if (read(fd, &phdr, sizeof(phdr)) != sizeof(phdr)) {
close(fd);
fprintf(stderr, "Fatal error: Couldn't read program header.\n");
return ACRELCONVERT_FUNC_ERROR;
}
segment_type = convert_endian(4, phdr.p_type, match_endian);
/* Found! */
if (segment_type == PT_DYNAMIC)
{
Elf32_Word p_filesz = convert_endian(4,phdr.p_filesz, match_endian), rel_size;
Elf32_Off p_offset = convert_endian(4,phdr.p_offset, match_endian);
unsigned int rel_offset;
Elf32_Dyn * buffer = NULL;
Elf32_Addr rel_addr;
int rel_type;
buffer = (Elf32_Dyn *) malloc(sizeof(char)*p_filesz);
if (buffer == NULL)
{
close(fd);
fprintf(stderr, "Fatal error in buffer dynamic allocation.\n");
return ACRELCONVERT_FUNC_ERROR;
}
lseek(fd, p_offset, SEEK_SET);
if (read(fd, buffer, p_filesz) != p_filesz)
{
close(fd);
free(buffer);
fprintf(stderr, "Fatal error: Couldn't read DYNAMIC segment.\n");
return ACRELCONVERT_FUNC_ERROR;
}
rel_type = 0;
rel_addr = 0;
rel_size = 0;
/* Iterates though all dynamic entries and finds REL/RELA records */
for (j = 0; j < (p_filesz / sizeof(Elf32_Dyn)); j++)
{
switch (convert_endian(4,buffer[j].d_tag, match_endian))
{
case DT_REL:
case DT_RELA:
rel_type = convert_endian(4, buffer[j].d_tag, match_endian);
rel_addr = convert_endian(4, buffer[j].d_un.d_ptr, match_endian);
break;
case DT_RELSZ:
case DT_RELASZ:
rel_size = convert_endian(4, buffer[j].d_un.d_val, match_endian);
break;
default:
break;
}
}
free(buffer);
/* If any info is missing, terminate */
if (rel_type == 0 || rel_addr == 0 || rel_size == 0)
{
close(fd);
fprintf(stderr, "Could not locate a dynamic relocation section in this DSO.\n");
return ACRELCONVERT_FUNC_ERROR;
}
rel_offset = 0;
/* Identify where, in the file, these relocations are (rel_offset) */
for (j=0; j < phnum; j++)
{
lseek(fd, phoff + phentsize * i, SEEK_SET);
if (read(fd, &phdr, sizeof(phdr)) != sizeof(phdr)) {
close(fd);
fprintf(stderr, "Fatal error: Couldn't read program header.\n");
return ACRELCONVERT_FUNC_ERROR;
}
segment_type = convert_endian(4, phdr.p_type, match_endian);
if (segment_type == PT_LOAD)
{
Elf32_Addr p_vaddr = convert_endian(4,phdr.p_vaddr, match_endian);
Elf32_Word p_filesz = convert_endian(4,phdr.p_filesz, match_endian);
Elf32_Off p_offset = convert_endian(4,phdr.p_offset, match_endian);
/* Does this segment contains our dynrelocs section? */
if (p_vaddr <= rel_addr && p_vaddr + p_filesz >= rel_addr + rel_size)
{
rel_offset = p_offset + (rel_addr - p_vaddr);
}
}
}
/* Not found */
if (rel_offset == 0)
{
close(fd);
fprintf(stderr, "Could not locate the dynamic relocation section in this DSO.\n");
return ACRELCONVERT_FUNC_ERROR;
}
/* Now we have rel_offset, rel_type and rel_size. Start patching relocations */
dynamic_found = TRUE;
lseek(fd, rel_offset, SEEK_SET);
if (patch_relocation_section(fd, rel_size, rel_type, hashtable, match_endian)
== ACRELCONVERT_FUNC_ERROR)
{
close(fd);
fprintf(stderr, "Failed patching relocation codes at dynrelocs section.\n");
return ACRELCONVERT_FUNC_ERROR;
}
}
}
if (!dynamic_found)
{
close(fd);
fprintf(stderr, "Fatal error: Couldn't find any DYNAMIC segment in this DSO, preventing us from locating dynamic relocations section without a section headers table.\n");
return ACRELCONVERT_FUNC_ERROR;
}
}
else /* We do have section headers information. */
{
int shoff = convert_endian(4,ehdr.e_shoff, match_endian);
short shsize = convert_endian(2,ehdr.e_shentsize, match_endian);
/* Iterates though all sections. Patches all REL or RELA section types. */
for (i=0; i<convert_endian(2,ehdr.e_shnum, match_endian); i++) {
Elf32_Word shtype;
int rel_type, rel_size;
lseek(fd, shoff + shsize*i, SEEK_SET);
if (read(fd, &shdr, sizeof(shdr)) != sizeof(shdr)) {
fprintf(stderr, "Error while trying to read section header.\n");
close(fd);
return ACRELCONVERT_FUNC_ERROR;
}
shtype = convert_endian(4, shdr.sh_type, match_endian);
if (shtype == SHT_REL || shtype == SHT_RELA)
{
if (shtype == SHT_REL)
rel_type = DT_REL;
else
rel_type = DT_RELA;
rel_size = convert_endian(4, shdr.sh_size, match_endian);
lseek(fd, convert_endian(4, shdr.sh_offset, match_endian), SEEK_SET);
if (patch_relocation_section(fd, rel_size, rel_type, hashtable, match_endian)
== ACRELCONVERT_FUNC_ERROR)
{
close(fd);
fprintf(stderr, "Failed patching relocation codes at section number %d.\n", i);
return ACRELCONVERT_FUNC_ERROR;
}
sections_patched++;
}
}
}
if (!sections_patched)
{
if (!dynamic_found)
printf("\nNo relocation sections found. File has not been changed.\n");
}
else
{
printf("\nDone patching %d sections.\n", sections_patched);
}
/* Close file */
close(fd);
return ACRELCONVERT_FUNC_OK;
}
int patch_relocation_section(unsigned int fd, unsigned int size, int rel_type, hash_node **hashtable,
unsigned int match_endian)
{
unsigned int i;
unsigned int entry_size = (rel_type == DT_REL) ? sizeof(Elf32_Rel) : sizeof(Elf32_Rela);
unsigned int total = size / entry_size;
if (rel_type == DT_REL) /* rel relocation type*/
{
Elf32_Rel rel;
unsigned int new_code, old_code, sym;
for (i = 0; i < total; i++)
{
/* Read it. */
if (read(fd, &rel, sizeof(rel)) != sizeof(rel))
{
fprintf(stderr, "Couldn't read REL relocation number %d.\n", i);
return ACRELCONVERT_FUNC_ERROR;
}
/* Patch it. */
old_code = ELF32_R_TYPE(convert_endian(4, rel.r_info, match_endian));
sym = ELF32_R_SYM(convert_endian(4, rel.r_info, match_endian));
if (hash_get_value(hashtable, old_code, &new_code) == ACRELCONVERT_FUNC_ERROR)
{
fprintf(stderr, "Error: unrecognized relocation code 0x%X (%d), at relocation number %d\n",
old_code, old_code, i);
return ACRELCONVERT_FUNC_ERROR;
}
rel.r_info = convert_endian(4, ELF32_R_INFO(sym, new_code), match_endian);
/* Write it back, patched. */
lseek(fd, - sizeof(rel), SEEK_CUR);
if (write(fd, &rel, sizeof(rel)) != sizeof(rel))
{
fprintf(stderr, "Error: couldn't write REL relocation number %d.\n", i);
return ACRELCONVERT_FUNC_ERROR;
}
}
}
else /* rela relocation type */
{
Elf32_Rela rela;
unsigned int new_code, old_code, sym;
for (i = 0; i < total; i++)
{
/* Read it. */
if (read(fd, &rela, sizeof(rela)) != sizeof(rela))
{
fprintf(stderr, "Couldn't read RELA relocation number %d.\n", i);
return ACRELCONVERT_FUNC_ERROR;
}
/* Patch it. */
old_code = ELF32_R_TYPE(convert_endian(4, rela.r_info, match_endian));
sym = ELF32_R_SYM(convert_endian(4, rela.r_info, match_endian));
if (hash_get_value(hashtable, old_code, &new_code) == ACRELCONVERT_FUNC_ERROR)
{
fprintf(stderr, "Error: unrecognized relocation code 0x%X (%d), at relocation number %d\n",
old_code, old_code, i);
return ACRELCONVERT_FUNC_ERROR;
}
rela.r_info = convert_endian(4, ELF32_R_INFO(sym, new_code), match_endian);
/* Write it back, patched. */
lseek(fd, - sizeof(rela), SEEK_CUR);
if (write(fd, &rela, sizeof(rela)) != sizeof(rela))
{
fprintf(stderr, "Error: couldn't write RELA relocation number %d.\n", i);
return ACRELCONVERT_FUNC_ERROR;
}
}
}
return ACRELCONVERT_FUNC_OK;
}
Elf32_Word version_definitions::get_cur_hash() {
if (current_entry == NULL) return 0;
return convert_endian(4, current_entry->vd_hash, match_endian);
}
Elf32_Half version_definitions::get_cur_flags() {
if (current_entry == NULL) return 0;
return convert_endian(4, current_entry->vd_flags, match_endian);
}
/* Return the filename (of current entry) */
char * version_needed::get_cur_filename()
{
if (current_entry == NULL) return 0;
return (char *) strtab + convert_endian(4, current_entry->vn_file, match_endian);
}
bool link_node::link_node_setup(Elf32_Addr dynaddr, unsigned char *mem,
Elf32_Addr l_addr, unsigned int t, unsigned char *name,
version_needed *verneed, bool match_endian) {
Elf32_Addr hashaddr = 0, symaddr= 0, straddr = 0, reladdr = 0,
verneed_addr = 0, verdef_addr = 0, versym_addr = 0, init_addr = 0,
init_addr_array = 0, init_addr_arraysz = 0, fini_addr = 0,
fini_addr_array = 0, fini_addr_arraysz = 0;
Elf32_Word pltrel = 0, relsize = 0;
unsigned int reltype = 0;
bool is_linux_runtime_linker = false;
this->match_endian = match_endian;
load_addr = l_addr;
type = t;
soname = name;
this->mem = mem;
dyn_info.load_dynamic_info(dynaddr, mem, match_endian);
hashaddr = dyn_info.get_value(DT_HASH);
symaddr = dyn_info.get_value(DT_SYMTAB);
straddr = dyn_info.get_value(DT_STRTAB);
verneed_addr = dyn_info.get_value(DT_VERNEED);
verdef_addr = dyn_info.get_value(DT_VERDEF);
versym_addr = dyn_info.get_value(DT_VERSYM);
init_addr = dyn_info.get_value(DT_INIT);
init_addr_array = dyn_info.get_value(DT_INIT_ARRAY);
init_addr_arraysz = dyn_info.get_value(DT_INIT_ARRAYSZ);
fini_addr = dyn_info.get_value(DT_FINI);
fini_addr_array = dyn_info.get_value(DT_FINI_ARRAY);
fini_addr_arraysz = dyn_info.get_value(DT_FINI_ARRAYSZ);
if ( dyn_info.compare_library_soname ((char *)soname, get_program_interpreter())
== 0) {
is_linux_runtime_linker = true;
}
if (hashaddr)
hashaddr += l_addr;
if (symaddr)
symaddr += l_addr;
if (straddr)
straddr += l_addr;
if (verneed_addr)
verneed_addr += l_addr;
if (verdef_addr)
verdef_addr += l_addr;
if (versym_addr)
versym_addr += l_addr;
/* Configure init/fini addresses (avoid including the program
interpreter) */
if (!is_linux_runtime_linker && init_addr) {
init_addr += l_addr;
add_to_start_vector(init_addr);
}
if (!is_linux_runtime_linker && init_addr_arraysz && init_addr_array) {
init_addr_array += l_addr;
for (unsigned i = 0; i < init_addr_arraysz; i+= sizeof(Elf32_Addr)) {
Elf32_Addr tmp = *(reinterpret_cast<Elf32_Addr *>(mem +
init_addr_array +
i));
tmp = convert_endian(sizeof(Elf32_Addr), tmp, match_endian);
add_to_start_vector((unsigned) (tmp + l_addr));
}
}
if (!is_linux_runtime_linker && fini_addr) {
fini_addr += l_addr;
add_to_fini_vector(fini_addr);
}
if (!is_linux_runtime_linker && fini_addr_arraysz && fini_addr_array) {
fini_addr_array += l_addr;
for (unsigned i = 0; i < fini_addr_arraysz; i+= sizeof(Elf32_Addr)) {
Elf32_Addr tmp = *(reinterpret_cast<Elf32_Addr *>(mem +
fini_addr_array +
i));
tmp = convert_endian(sizeof(Elf32_Addr), tmp, match_endian);
add_to_fini_vector((unsigned) (tmp + l_addr));
}
}
/* Set back the adjusted value because dyn_info uses it when
extracting needed libraries names. */
dyn_info.set_value(DT_STRTAB, straddr);
dyn_table.setup_hash(mem, hashaddr, symaddr, straddr, verdef_addr,
verneed_addr, versym_addr, match_endian);
pltrel = dyn_info.get_value(DT_PLTREL);
if (pltrel == 0) /* file has no relocations */
{
has_relocations = 0;
}
else
{
has_relocations = 1;
reltype = (pltrel == DT_REL)? AC_USE_REL : AC_USE_RELA;
reladdr = l_addr + dyn_info.get_value(pltrel); /* DT_REL or DT_RELA */
if (reladdr == 0) /* No data relocations */
reladdr = l_addr = dyn_info.get_value(DT_JMPREL);
relsize = dyn_info.get_value(pltrel + 1); /* DT_RELSZ or DT_RELASZ*/
relsize += dyn_info.get_value(DT_PLTRELSZ);
relsize /= (pltrel == DT_REL)? 8:12;
dyn_relocs.setup(reladdr, relsize, mem, reltype, match_endian);
}
if (verneed != NULL)
{
/* we have special needs for this library*/
if (verneed->set_entry((char *)name) == true)
{
/* does not have version information, this is not the desired library */
if (!verdef_addr)
return false;
do /* For each verneeded aux entry, see if this library has the
desired version tag */
{
if (dyn_table.get_verdefs()->set_entry(verneed->get_cur_vername(),
verneed->get_cur_hash()) == false)
{ /* We don't have this version definition, see if it is
really necessary (not a weak def) */
if (!(verneed->get_cur_flags() & VER_FLG_WEAK))
return false; /* Library is old, reject it */
}
} while (verneed->go_next_aux_entry());
}
}
/* Library accepted */
return true;
}
/* Return the number of associated aux entries (of current entry) */
Elf32_Half version_needed::get_cur_cnt()
{
if (current_entry == NULL) return 0;
return convert_endian(2, current_entry->vn_cnt, match_endian);
}