int
gelf_update_sym(Elf_Data *ed, int ndx, GElf_Sym *gs)
{
int ec;
Elf *e;
size_t msz;
Elf_Scn *scn;
uint32_t sh_type;
Elf32_Sym *sym32;
Elf64_Sym *sym64;
struct _Libelf_Data *d;
d = (struct _Libelf_Data *) ed;
if (d == NULL || ndx < 0 || gs == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_SYM) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
msz = _libelf_msize(ELF_T_SYM, ec, e->e_version);
assert(msz > 0);
if (msz * ndx >= d->d_data.d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (ec == ELFCLASS32) {
sym32 = (Elf32_Sym *) d->d_data.d_buf + ndx;
sym32->st_name = gs->st_name;
sym32->st_info = gs->st_info;
sym32->st_other = gs->st_other;
sym32->st_shndx = gs->st_shndx;
LIBELF_COPY_U32(sym32, gs, st_value);
LIBELF_COPY_U32(sym32, gs, st_size);
} else {
sym64 = (Elf64_Sym *) d->d_data.d_buf + ndx;
*sym64 = *gs;
}
return (1);
}
int
gelf_update_move(Elf_Data *ed, int ndx, GElf_Move *gm)
{
int ec;
Elf *e;
size_t msz;
Elf_Scn *scn;
uint32_t sh_type;
Elf32_Move *move32;
Elf64_Move *move64;
struct _Libelf_Data *d;
d = (struct _Libelf_Data *) ed;
if (d == NULL || ndx < 0 || gm == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_MOVE) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
msz = _libelf_msize(ELF_T_MOVE, ec, e->e_version);
assert(msz > 0);
if (msz * ndx >= d->d_data.d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (ec == ELFCLASS32) {
move32 = (Elf32_Move *) d->d_data.d_buf + ndx;
move32->m_value = gm->m_value;
LIBELF_COPY_U32(move32, gm, m_info);
LIBELF_COPY_U32(move32, gm, m_poffset);
move32->m_repeat = gm->m_repeat;
move32->m_stride = gm->m_stride;
} else {
move64 = (Elf64_Move *) d->d_data.d_buf + ndx;
*move64 = *gm;
}
return (1);
}
int
gelf_update_cap(Elf_Data *ed, int ndx, GElf_Cap *gc)
{
int ec;
Elf *e;
size_t msz;
Elf_Scn *scn;
Elf32_Cap *cap32;
Elf64_Cap *cap64;
u_int32_t sh_type;
struct _Libelf_Data *d;
d = (struct _Libelf_Data *) ed;
if (d == NULL || ndx < 0 || gc == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_CAP) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
msz = _libelf_msize(ELF_T_CAP, ec, e->e_version);
assert(msz > 0);
if (msz * (size_t) ndx >= d->d_data.d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (ec == ELFCLASS32) {
cap32 = (Elf32_Cap *) d->d_data.d_buf + ndx;
LIBELF_COPY_U32(cap32, gc, c_tag);
LIBELF_COPY_U32(cap32, gc, c_un.c_val);
} else {
cap64 = (Elf64_Cap *) d->d_data.d_buf + ndx;
*cap64 = *gc;
}
return (1);
}
int
gelf_update_ehdr(Elf *e, GElf_Ehdr *s)
{
int ec;
void *ehdr;
Elf32_Ehdr *eh32;
Elf64_Ehdr *eh64;
if (s== NULL || e == NULL || e->e_kind != ELF_K_ELF ||
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (e->e_cmd == ELF_C_READ) {
LIBELF_SET_ERROR(MODE, 0);
return (0);
}
if ((ehdr = _libelf_ehdr(e, ec, 0)) == NULL)
return (0);
(void) elf_flagehdr(e, ELF_C_SET, ELF_F_DIRTY);
if (ec == ELFCLASS64) {
eh64 = (Elf64_Ehdr *) ehdr;
*eh64 = *s;
return (1);
}
eh32 = (Elf32_Ehdr *) ehdr;
(void) memcpy(eh32->e_ident, s->e_ident, sizeof(eh32->e_ident));
eh32->e_type = s->e_type;
eh32->e_machine = s->e_machine;
eh32->e_version = s->e_version;
LIBELF_COPY_U32(eh32, s, e_entry);
LIBELF_COPY_U32(eh32, s, e_phoff);
LIBELF_COPY_U32(eh32, s, e_shoff);
eh32->e_flags = s->e_flags;
eh32->e_ehsize = s->e_ehsize;
eh32->e_phentsize = s->e_phentsize;
eh32->e_phnum = s->e_phnum;
eh32->e_shentsize = s->e_shentsize;
eh32->e_shnum = s->e_shnum;
eh32->e_shstrndx = s->e_shstrndx;
return (1);
}
int
gelf_update_rel(Elf_Data *d, int ndx, GElf_Rel *dr)
{
int ec;
Elf *e;
Elf_Scn *scn;
Elf32_Rel *rel32;
Elf64_Rel *rel64;
size_t msz;
uint32_t sh_type;
if (d == NULL || ndx < 0 || dr == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_REL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
msz = _libelf_msize(ELF_T_REL, ec, e->e_version);
assert(msz > 0);
if (msz * ndx >= d->d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (ec == ELFCLASS32) {
rel32 = (Elf32_Rel *) d->d_buf + ndx;
LIBELF_COPY_U32(rel32, dr, r_offset);
if (ELF64_R_SYM(dr->r_info) > ELF32_R_SYM(~0UL) ||
ELF64_R_TYPE(dr->r_info) > ELF32_R_TYPE(~0U)) {
LIBELF_SET_ERROR(RANGE, 0);
return (0);
}
rel32->r_info = ELF32_R_INFO(ELF64_R_SYM(dr->r_info),
ELF64_R_TYPE(dr->r_info));
} else {
rel64 = (Elf64_Rel *) d->d_buf + ndx;
*rel64 = *dr;
}
return (1);
}
int
gelf_update_dyn(Elf_Data *ed, int ndx, GElf_Dyn *ds)
{
int ec;
Elf *e;
size_t msz;
Elf_Scn *scn;
Elf32_Dyn *dyn32;
Elf64_Dyn *dyn64;
uint32_t sh_type;
struct _Libelf_Data *d;
d = (struct _Libelf_Data *) ed;
if (d == NULL || ndx < 0 || ds == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_DYN) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
msz = _libelf_msize(ELF_T_DYN, ec, e->e_version);
assert(msz > 0);
assert(ndx >= 0);
if (msz * (size_t) ndx >= d->d_data.d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (ec == ELFCLASS32) {
dyn32 = (Elf32_Dyn *) d->d_data.d_buf + ndx;
LIBELF_COPY_S32(dyn32, ds, d_tag);
LIBELF_COPY_U32(dyn32, ds, d_un.d_val);
} else {
dyn64 = (Elf64_Dyn *) d->d_data.d_buf + ndx;
*dyn64 = *ds;
}
return (1);
}
int
gelf_update_phdr(Elf *e, int ndx, GElf_Phdr *s)
{
int ec, phnum;
void *ehdr;
Elf32_Phdr *ph32;
Elf64_Phdr *ph64;
if (s == NULL || e == NULL || e->e_kind != ELF_K_ELF ||
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (e->e_cmd == ELF_C_READ) {
LIBELF_SET_ERROR(MODE, 0);
return (0);
}
if ((ehdr = _libelf_ehdr(e, ec, 0)) == NULL)
return (0);
if (ec == ELFCLASS32)
phnum = ((Elf32_Ehdr *) ehdr)->e_phnum;
else
phnum = ((Elf64_Ehdr *) ehdr)->e_phnum;
if (ndx < 0 || ndx > phnum) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
(void) elf_flagphdr(e, ELF_C_SET, ELF_F_DIRTY);
if (ec == ELFCLASS64) {
ph64 = e->e_u.e_elf.e_phdr.e_phdr64 + ndx;
*ph64 = *s;
return (1);
}
ph32 = e->e_u.e_elf.e_phdr.e_phdr32 + ndx;
ph32->p_type = s->p_type;
ph32->p_flags = s->p_flags;
LIBELF_COPY_U32(ph32, s, p_offset);
LIBELF_COPY_U32(ph32, s, p_vaddr);
LIBELF_COPY_U32(ph32, s, p_paddr);
LIBELF_COPY_U32(ph32, s, p_filesz);
LIBELF_COPY_U32(ph32, s, p_memsz);
LIBELF_COPY_U32(ph32, s, p_align);
return (1);
}
int
gelf_update_shdr(Elf_Scn *scn, GElf_Shdr *s)
{
int ec;
Elf *e;
Elf32_Shdr *sh32;
if (s == NULL || scn == NULL || (e = scn->s_elf) == NULL ||
e->e_kind != ELF_K_ELF ||
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (e->e_cmd == ELF_C_READ) {
LIBELF_SET_ERROR(MODE, 0);
return (0);
}
(void) elf_flagscn(scn, ELF_C_SET, ELF_F_DIRTY);
if (ec == ELFCLASS64) {
scn->s_shdr.s_shdr64 = *s;
return (1);
}
sh32 = &scn->s_shdr.s_shdr32;
sh32->sh_name = s->sh_name;
sh32->sh_type = s->sh_type;
LIBELF_COPY_U32(sh32, s, sh_flags);
LIBELF_COPY_U32(sh32, s, sh_addr);
LIBELF_COPY_U32(sh32, s, sh_offset);
LIBELF_COPY_U32(sh32, s, sh_size);
sh32->sh_link = s->sh_link;
sh32->sh_info = s->sh_info;
LIBELF_COPY_U32(sh32, s, sh_addralign);
LIBELF_COPY_U32(sh32, s, sh_entsize);
return (1);
}