static int elf_fdpic_fetch_phdrs(struct elf_fdpic_params *params,
struct file *file)
{
- struct elf32_phdr *phdr;
+ struct elf_phdr *phdr;
unsigned long size;
int retval, loop;
loff_t pos = params->hdr.e_phoff;
else
executable_stack = EXSTACK_DEFAULT;
- if (stack_size == 0) {
+ if (stack_size == 0 && interp_params.flags & ELF_FDPIC_FLAG_PRESENT) {
stack_size = interp_params.stack_size;
if (interp_params.flags & ELF_FDPIC_FLAG_EXEC_STACK)
executable_stack = EXSTACK_ENABLE_X;
/* there's now no turning back... the old userspace image is dead,
* defunct, deceased, etc.
*/
+ SET_PERSONALITY(exec_params.hdr);
if (elf_check_fdpic(&exec_params.hdr))
- set_personality(PER_LINUX_FDPIC);
- else
- set_personality(PER_LINUX);
+ current->personality |= PER_LINUX_FDPIC;
if (elf_read_implies_exec(&exec_params.hdr, executable_stack))
current->personality |= READ_IMPLIES_EXEC;
goto error;
}
- allow_write_access(interpreter);
fput(interpreter);
interpreter = NULL;
}
current->mm->start_stack = current->mm->start_brk + stack_size;
#endif
- if (create_elf_fdpic_tables(bprm, current->mm,
- &exec_params, &interp_params) < 0)
+ retval = create_elf_fdpic_tables(bprm, current->mm, &exec_params,
+ &interp_params);
+ if (retval < 0)
goto error;
kdebug("- start_code %lx", current->mm->start_code);
retval = 0;
error:
- if (interpreter) {
- allow_write_access(interpreter);
+ if (interpreter)
fput(interpreter);
- }
kfree(interpreter_name);
kfree(exec_params.phdrs);
kfree(exec_params.loadmap);
char *k_platform, *k_base_platform;
char __user *u_platform, *u_base_platform, *p;
int loop;
- int nr; /* reset for each csp adjustment */
unsigned long flags = 0;
+ int ei_index;
+ elf_addr_t *elf_info;
#ifdef CONFIG_MMU
/* In some cases (e.g. Hyper-Threading), we want to avoid L1 evictions
sp &= ~7UL;
/* stack the load map(s) */
- len = sizeof(struct elf32_fdpic_loadmap);
- len += sizeof(struct elf32_fdpic_loadseg) * exec_params->loadmap->nsegs;
+ len = sizeof(struct elf_fdpic_loadmap);
+ len += sizeof(struct elf_fdpic_loadseg) * exec_params->loadmap->nsegs;
sp = (sp - len) & ~7UL;
exec_params->map_addr = sp;
current->mm->context.exec_fdpic_loadmap = (unsigned long) sp;
if (interp_params->loadmap) {
- len = sizeof(struct elf32_fdpic_loadmap);
- len += sizeof(struct elf32_fdpic_loadseg) *
+ len = sizeof(struct elf_fdpic_loadmap);
+ len += sizeof(struct elf_fdpic_loadseg) *
interp_params->loadmap->nsegs;
sp = (sp - len) & ~7UL;
interp_params->map_addr = sp;
csp -= sp & 15UL;
sp -= sp & 15UL;
- /* put the ELF interpreter info on the stack */
-#define NEW_AUX_ENT(id, val) \
- do { \
- struct { unsigned long _id, _val; } __user *ent, v; \
- \
- ent = (void __user *) csp; \
- v._id = (id); \
- v._val = (val); \
- if (copy_to_user(ent + nr, &v, sizeof(v))) \
- return -EFAULT; \
- nr++; \
+ /* Create the ELF interpreter info */
+ elf_info = (elf_addr_t *)mm->saved_auxv;
+ /* update AT_VECTOR_SIZE_BASE if the number of NEW_AUX_ENT() changes */
+#define NEW_AUX_ENT(id, val) \
+ do { \
+ *elf_info++ = id; \
+ *elf_info++ = val; \
} while (0)
- nr = 0;
- csp -= 2 * sizeof(unsigned long);
- NEW_AUX_ENT(AT_NULL, 0);
- if (k_platform) {
- nr = 0;
- csp -= 2 * sizeof(unsigned long);
- NEW_AUX_ENT(AT_PLATFORM,
- (elf_addr_t) (unsigned long) u_platform);
- }
-
- if (k_base_platform) {
- nr = 0;
- csp -= 2 * sizeof(unsigned long);
- NEW_AUX_ENT(AT_BASE_PLATFORM,
- (elf_addr_t) (unsigned long) u_base_platform);
- }
-
- if (bprm->have_execfd) {
- nr = 0;
- csp -= 2 * sizeof(unsigned long);
- NEW_AUX_ENT(AT_EXECFD, bprm->execfd);
- }
-
- nr = 0;
- csp -= DLINFO_ITEMS * 2 * sizeof(unsigned long);
+#ifdef ARCH_DLINFO
+ /*
+ * ARCH_DLINFO must come first so PPC can do its special alignment of
+ * AUXV.
+ * update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT() in
+ * ARCH_DLINFO changes
+ */
+ ARCH_DLINFO;
+#endif
NEW_AUX_ENT(AT_HWCAP, ELF_HWCAP);
#ifdef ELF_HWCAP2
NEW_AUX_ENT(AT_HWCAP2, ELF_HWCAP2);
NEW_AUX_ENT(AT_EGID, (elf_addr_t) from_kgid_munged(cred->user_ns, cred->egid));
NEW_AUX_ENT(AT_SECURE, bprm->secureexec);
NEW_AUX_ENT(AT_EXECFN, bprm->exec);
+ if (k_platform)
+ NEW_AUX_ENT(AT_PLATFORM,
+ (elf_addr_t)(unsigned long)u_platform);
+ if (k_base_platform)
+ NEW_AUX_ENT(AT_BASE_PLATFORM,
+ (elf_addr_t)(unsigned long)u_base_platform);
+ if (bprm->have_execfd)
+ NEW_AUX_ENT(AT_EXECFD, bprm->execfd);
+#undef NEW_AUX_ENT
+ /* AT_NULL is zero; clear the rest too */
+ memset(elf_info, 0, (char *)mm->saved_auxv +
+ sizeof(mm->saved_auxv) - (char *)elf_info);
-#ifdef ARCH_DLINFO
- nr = 0;
- csp -= AT_VECTOR_SIZE_ARCH * 2 * sizeof(unsigned long);
+ /* And advance past the AT_NULL entry. */
+ elf_info += 2;
- /* ARCH_DLINFO must come last so platform specific code can enforce
- * special alignment requirements on the AUXV if necessary (eg. PPC).
- */
- ARCH_DLINFO;
-#endif
-#undef NEW_AUX_ENT
+ ei_index = elf_info - (elf_addr_t *)mm->saved_auxv;
+ csp -= ei_index * sizeof(elf_addr_t);
+
+ /* Put the elf_info on the stack in the right place. */
+ if (copy_to_user((void __user *)csp, mm->saved_auxv,
+ ei_index * sizeof(elf_addr_t)))
+ return -EFAULT;
/* allocate room for argv[] and envv[] */
csp -= (bprm->envc + 1) * sizeof(elf_caddr_t);
struct mm_struct *mm,
const char *what)
{
- struct elf32_fdpic_loadmap *loadmap;
+ struct elf_fdpic_loadmap *loadmap;
#ifdef CONFIG_MMU
- struct elf32_fdpic_loadseg *mseg;
+ struct elf_fdpic_loadseg *mseg;
+ unsigned long load_addr;
#endif
- struct elf32_fdpic_loadseg *seg;
- struct elf32_phdr *phdr;
- unsigned long load_addr, stop;
+ struct elf_fdpic_loadseg *seg;
+ struct elf_phdr *phdr;
unsigned nloads, tmp;
- size_t size;
+ unsigned long stop;
int loop, ret;
/* allocate a load map table */
if (nloads == 0)
return -ELIBBAD;
- size = sizeof(*loadmap) + nloads * sizeof(*seg);
- loadmap = kzalloc(size, GFP_KERNEL);
+ loadmap = kzalloc(struct_size(loadmap, segs, nloads), GFP_KERNEL);
if (!loadmap)
return -ENOMEM;
params->loadmap = loadmap;
- loadmap->version = ELF32_FDPIC_LOADMAP_VERSION;
+ loadmap->version = ELF_FDPIC_LOADMAP_VERSION;
loadmap->nsegs = nloads;
- load_addr = params->load_addr;
- seg = loadmap->segs;
-
/* map the requested LOADs into the memory space */
switch (params->flags & ELF_FDPIC_FLAG_ARRANGEMENT) {
case ELF_FDPIC_FLAG_CONSTDISP:
if (phdr->p_vaddr >= seg->p_vaddr &&
phdr->p_vaddr + phdr->p_memsz <=
seg->p_vaddr + seg->p_memsz) {
- Elf32_Dyn __user *dyn;
- Elf32_Sword d_tag;
+ Elf_Dyn __user *dyn;
+ Elf_Sword d_tag;
params->dynamic_addr =
(phdr->p_vaddr - seg->p_vaddr) +
* one item, and that the last item is a NULL
* entry */
if (phdr->p_memsz == 0 ||
- phdr->p_memsz % sizeof(Elf32_Dyn) != 0)
+ phdr->p_memsz % sizeof(Elf_Dyn) != 0)
goto dynamic_error;
- tmp = phdr->p_memsz / sizeof(Elf32_Dyn);
- dyn = (Elf32_Dyn __user *)params->dynamic_addr;
+ tmp = phdr->p_memsz / sizeof(Elf_Dyn);
+ dyn = (Elf_Dyn __user *)params->dynamic_addr;
if (get_user(d_tag, &dyn[tmp - 1].d_tag) ||
d_tag != 0)
goto dynamic_error;
kdebug("- DYNAMIC[]: %lx", params->dynamic_addr);
seg = loadmap->segs;
for (loop = 0; loop < loadmap->nsegs; loop++, seg++)
- kdebug("- LOAD[%d] : %08x-%08x [va=%x ms=%x]",
+ kdebug("- LOAD[%d] : %08llx-%08llx [va=%llx ms=%llx]",
loop,
- seg->addr, seg->addr + seg->p_memsz - 1,
- seg->p_vaddr, seg->p_memsz);
+ (unsigned long long) seg->addr,
+ (unsigned long long) seg->addr + seg->p_memsz - 1,
+ (unsigned long long) seg->p_vaddr,
+ (unsigned long long) seg->p_memsz);
return 0;
struct file *file,
struct mm_struct *mm)
{
- struct elf32_fdpic_loadseg *seg;
- struct elf32_phdr *phdr;
+ struct elf_fdpic_loadseg *seg;
+ struct elf_phdr *phdr;
unsigned long load_addr, base = ULONG_MAX, top = 0, maddr = 0;
int loop, ret;
struct file *file,
struct mm_struct *mm)
{
- struct elf32_fdpic_loadseg *seg;
- struct elf32_phdr *phdr;
+ struct elf_fdpic_loadseg *seg;
+ struct elf_phdr *phdr;
unsigned long load_addr, delta_vaddr;
int loop, dvset;
maddr = vm_mmap(file, maddr, phdr->p_memsz + disp, prot, flags,
phdr->p_offset - disp);
- kdebug("mmap[%d] <file> sz=%lx pr=%x fl=%x of=%lx --> %08lx",
- loop, phdr->p_memsz + disp, prot, flags,
- phdr->p_offset - disp, maddr);
+ kdebug("mmap[%d] <file> sz=%llx pr=%x fl=%x of=%llx --> %08lx",
+ loop, (unsigned long long) phdr->p_memsz + disp,
+ prot, flags, (unsigned long long) phdr->p_offset - disp,
+ maddr);
if (IS_ERR_VALUE(maddr))
return (int) maddr;
#else
if (excess > 0) {
- kdebug("clear[%d] ad=%lx sz=%lx",
- loop, maddr + phdr->p_filesz, excess);
+ kdebug("clear[%d] ad=%llx sz=%lx", loop,
+ (unsigned long long) maddr + phdr->p_filesz,
+ excess);
if (clear_user((void *) maddr + phdr->p_filesz, excess))
return -EFAULT;
}
phdr->p_filesz = sz;
phdr->p_memsz = 0;
phdr->p_flags = 0;
- phdr->p_align = 0;
+ phdr->p_align = 4;
return;
}
SET_UID(psinfo->pr_uid, from_kuid_munged(cred->user_ns, cred->uid));
SET_GID(psinfo->pr_gid, from_kgid_munged(cred->user_ns, cred->gid));
rcu_read_unlock();
- strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname));
+ get_task_comm(psinfo->pr_fname, p);
return 0;
}
tmp->next = thread_list;
thread_list = tmp;
- segs = cprm->vma_count + elf_core_extra_phdrs();
+ segs = cprm->vma_count + elf_core_extra_phdrs(cprm);
/* for notes section */
segs++;
fill_note(&auxv_note, "CORE", NT_AUXV, i * sizeof(elf_addr_t), auxv);
thread_status_size += notesize(&auxv_note);
- offset = sizeof(*elf); /* Elf header */
+ offset = sizeof(*elf); /* ELF header */
offset += segs * sizeof(struct elf_phdr); /* Program headers */
/* Write notes phdr entry */
dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE);
offset += cprm->vma_data_size;
- offset += elf_core_extra_data_size();
+ offset += elf_core_extra_data_size(cprm);
e_shoff = offset;
if (e_phnum == PN_XNUM) {
if (!elf_core_write_extra_phdrs(cprm, offset))
goto end_coredump;
- /* write out the notes section */
+ /* write out the notes section */
if (!writenote(thread_list->notes, cprm))
goto end_coredump;
if (!writenote(&psinfo_note, cprm))
projects / linux-2.6-microblaze.git / blobdiff