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Revert "Android: Add support for 32-bit Binder calls in a 64-bit kernel"

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This reverts commit 56373a4736, a better
implementation will be being merged.
This commit is contained in:
Mark Brown
2014-02-20 22:48:21 +09:00
parent 84d650bcdc
commit 713330dd90
2 changed files with 127 additions and 456 deletions
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275
drivers/staging/android/binder.c
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@@ -229,8 +229,8 @@ struct binder_node {
int internal_strong_refs;
int local_weak_refs;
int local_strong_refs;
userptr32_t ptr;
userptr32_t cookie;
void __user *ptr;
void __user *cookie;
unsigned has_strong_ref:1;
unsigned pending_strong_ref:1;
unsigned has_weak_ref:1;
@@ -243,7 +243,7 @@ struct binder_node {
struct binder_ref_death {
struct binder_work work;
userptr32_t cookie;
void __user *cookie;
};
struct binder_ref {
@@ -318,7 +318,7 @@ struct binder_proc {
int requested_threads;
int requested_threads_started;
int ready_threads;
int default_priority;
long default_priority;
struct dentry *debugfs_entry;
};
@@ -360,8 +360,8 @@ struct binder_transaction {
struct binder_buffer *buffer;
unsigned int code;
unsigned int flags;
int priority;
int saved_priority;
long priority;
long saved_priority;
kuid_t sender_euid;
};
@@ -430,16 +430,16 @@ static inline void binder_unlock(const char *tag)
mutex_unlock(&binder_main_lock);
}
static void binder_set_nice(int nice)
static void binder_set_nice(long nice)
{
int min_nice;
long min_nice;
if (can_nice(current, nice)) {
set_user_nice(current, nice);
return;
}
min_nice = 20 - current->signal->rlim[RLIMIT_NICE].rlim_cur;
binder_debug(BINDER_DEBUG_PRIORITY_CAP,
"%d: nice value %d not allowed use %d instead\n",
"%d: nice value %ld not allowed use %ld instead\n",
current->pid, nice, min_nice);
set_user_nice(current, min_nice);
if (min_nice < 20)
@@ -516,13 +516,13 @@ static void binder_insert_allocated_buffer(struct binder_proc *proc,
}
static struct binder_buffer *binder_buffer_lookup(struct binder_proc *proc,
userptr32_t user_ptr)
void __user *user_ptr)
{
struct rb_node *n = proc->allocated_buffers.rb_node;
struct binder_buffer *buffer;
struct binder_buffer *kern_ptr;
kern_ptr = (void *)(unsigned long)user_ptr - proc->user_buffer_offset
kern_ptr = user_ptr - proc->user_buffer_offset
- offsetof(struct binder_buffer, data);
while (n) {
@@ -660,8 +660,8 @@ static struct binder_buffer *binder_alloc_buf(struct binder_proc *proc,
return NULL;
}
size = ALIGN(data_size, sizeof(userptr32_t)) +
ALIGN(offsets_size, sizeof(userptr32_t));
size = ALIGN(data_size, sizeof(void *)) +
ALIGN(offsets_size, sizeof(void *));
if (size < data_size || size < offsets_size) {
binder_user_error("%d: got transaction with invalid size %zd-%zd\n",
@@ -809,8 +809,8 @@ static void binder_free_buf(struct binder_proc *proc,
buffer_size = binder_buffer_size(proc, buffer);
size = ALIGN(buffer->data_size, sizeof(userptr32_t)) +
ALIGN(buffer->offsets_size, sizeof(userptr32_t));
size = ALIGN(buffer->data_size, sizeof(void *)) +
ALIGN(buffer->offsets_size, sizeof(void *));
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
"%d: binder_free_buf %p size %zd buffer_size %zd\n",
@@ -857,7 +857,7 @@ static void binder_free_buf(struct binder_proc *proc,
}
static struct binder_node *binder_get_node(struct binder_proc *proc,
userptr32_t ptr)
void __user *ptr)
{
struct rb_node *n = proc->nodes.rb_node;
struct binder_node *node;
@@ -876,8 +876,8 @@ static struct binder_node *binder_get_node(struct binder_proc *proc,
}
static struct binder_node *binder_new_node(struct binder_proc *proc,
userptr32_t ptr,
userptr32_t cookie)
void __user *ptr,
void __user *cookie)
{
struct rb_node **p = &proc->nodes.rb_node;
struct rb_node *parent = NULL;
@@ -909,7 +909,7 @@ static struct binder_node *binder_new_node(struct binder_proc *proc,
INIT_LIST_HEAD(&node->work.entry);
INIT_LIST_HEAD(&node->async_todo);
binder_debug(BINDER_DEBUG_INTERNAL_REFS,
"%d:%d node %d u%x c%x created\n",
"%d:%d node %d u%p c%p created\n",
proc->pid, current->pid, node->debug_id,
node->ptr, node->cookie);
return node;
@@ -1227,9 +1227,9 @@ static void binder_send_failed_reply(struct binder_transaction *t,
static void binder_transaction_buffer_release(struct binder_proc *proc,
struct binder_buffer *buffer,
uint32_t *failed_at)
size_t *failed_at)
{
uint32_t *offp, *off_end;
size_t *offp, *off_end;
int debug_id = buffer->debug_id;
binder_debug(BINDER_DEBUG_TRANSACTION,
@@ -1240,18 +1240,17 @@ static void binder_transaction_buffer_release(struct binder_proc *proc,
if (buffer->target_node)
binder_dec_node(buffer->target_node, 1, 0);
offp = (uint32_t *)(buffer->data +
ALIGN(buffer->data_size, sizeof(userptr32_t)));
offp = (size_t *)(buffer->data + ALIGN(buffer->data_size, sizeof(void *)));
if (failed_at)
off_end = failed_at;
else
off_end = (uint32_t *)offp + (buffer->offsets_size/4);
off_end = (void *)offp + buffer->offsets_size;
for (; offp < off_end; offp++) {
struct flat_binder_object *fp;
if (*offp > buffer->data_size - sizeof(*fp) ||
buffer->data_size < sizeof(*fp) ||
!IS_ALIGNED(*offp, sizeof(userptr32_t))) {
pr_err("transaction release %d bad offset %x, size %zd\n",
!IS_ALIGNED(*offp, sizeof(void *))) {
pr_err("transaction release %d bad offset %zd, size %zd\n",
debug_id, *offp, buffer->data_size);
continue;
}
@@ -1261,11 +1260,12 @@ static void binder_transaction_buffer_release(struct binder_proc *proc,
case BINDER_TYPE_WEAK_BINDER: {
struct binder_node *node = binder_get_node(proc, fp->binder);
if (node == NULL) {
pr_err("transaction release %d bad node %x\n", debug_id, fp->binder);
pr_err("transaction release %d bad node %p\n",
debug_id, fp->binder);
break;
}
binder_debug(BINDER_DEBUG_TRANSACTION,
" node %d u%x\n",
" node %d u%p\n",
node->debug_id, node->ptr);
binder_dec_node(node, fp->type == BINDER_TYPE_BINDER, 0);
} break;
@@ -1304,7 +1304,7 @@ static void binder_transaction(struct binder_proc *proc,
{
struct binder_transaction *t;
struct binder_work *tcomplete;
uint32_t *offp, *off_end;
size_t *offp, *off_end;
struct binder_proc *target_proc;
struct binder_thread *target_thread = NULL;
struct binder_node *target_node = NULL;
@@ -1437,14 +1437,14 @@ static void binder_transaction(struct binder_proc *proc,
if (reply)
binder_debug(BINDER_DEBUG_TRANSACTION,
"%d:%d BC_REPLY %d -> %d:%d, data %x-%x size %d-%d\n",
"%d:%d BC_REPLY %d -> %d:%d, data %p-%p size %zd-%zd\n",
proc->pid, thread->pid, t->debug_id,
target_proc->pid, target_thread->pid,
tr->data.ptr.buffer, tr->data.ptr.offsets,
tr->data_size, tr->offsets_size);
else
binder_debug(BINDER_DEBUG_TRANSACTION,
"%d:%d BC_TRANSACTION %d -> %d - node %d, data %x-%x size %d-%d\n",
"%d:%d BC_TRANSACTION %d -> %d - node %d, data %p-%p size %zd-%zd\n",
proc->pid, thread->pid, t->debug_id,
target_proc->pid, target_node->debug_id,
tr->data.ptr.buffer, tr->data.ptr.offsets,
@@ -1477,34 +1477,33 @@ static void binder_transaction(struct binder_proc *proc,
if (target_node)
binder_inc_node(target_node, 1, 0, NULL);
offp = (uint32_t *)(t->buffer->data +
ALIGN(tr->data_size, sizeof(userptr32_t)));
offp = (size_t *)(t->buffer->data + ALIGN(tr->data_size, sizeof(void *)));
if (copy_from_user(t->buffer->data, (void *)(unsigned long)(tr->data.ptr.buffer), tr->data_size)) {
if (copy_from_user(t->buffer->data, tr->data.ptr.buffer, tr->data_size)) {
binder_user_error("%d:%d got transaction with invalid data ptr\n",
proc->pid, thread->pid);
return_error = BR_FAILED_REPLY;
goto err_copy_data_failed;
}
if (copy_from_user(offp, (void *)(unsigned long)(tr->data.ptr.offsets), tr->offsets_size)) {
if (copy_from_user(offp, tr->data.ptr.offsets, tr->offsets_size)) {
binder_user_error("%d:%d got transaction with invalid offsets ptr\n",
proc->pid, thread->pid);
return_error = BR_FAILED_REPLY;
goto err_copy_data_failed;
}
if (!IS_ALIGNED(tr->offsets_size, sizeof(uint32_t))) {
binder_user_error("%d:%d got transaction with invalid offsets size, %d\n",
if (!IS_ALIGNED(tr->offsets_size, sizeof(size_t))) {
binder_user_error("%d:%d got transaction with invalid offsets size, %zd\n",
proc->pid, thread->pid, tr->offsets_size);
return_error = BR_FAILED_REPLY;
goto err_bad_offset;
}
off_end = (uint32_t *)offp + (tr->offsets_size/4);
off_end = (void *)offp + tr->offsets_size;
for (; offp < off_end; offp++) {
struct flat_binder_object *fp;
if (*offp > t->buffer->data_size - sizeof(*fp) ||
t->buffer->data_size < sizeof(*fp) ||
!IS_ALIGNED(*offp, sizeof(userptr32_t))) {
binder_user_error("%d:%d got transaction with invalid offset, %x\n",
!IS_ALIGNED(*offp, sizeof(void *))) {
binder_user_error("%d:%d got transaction with invalid offset, %zd\n",
proc->pid, thread->pid, *offp);
return_error = BR_FAILED_REPLY;
goto err_bad_offset;
@@ -1525,7 +1524,7 @@ static void binder_transaction(struct binder_proc *proc,
node->accept_fds = !!(fp->flags & FLAT_BINDER_FLAG_ACCEPTS_FDS);
}
if (fp->cookie != node->cookie) {
binder_user_error("%d:%d sending u%x node %d, cookie mismatch %x != %x\n",
binder_user_error("%d:%d sending u%p node %d, cookie mismatch %p != %p\n",
proc->pid, thread->pid,
fp->binder, node->debug_id,
fp->cookie, node->cookie);
@@ -1550,7 +1549,7 @@ static void binder_transaction(struct binder_proc *proc,
trace_binder_transaction_node_to_ref(t, node, ref);
binder_debug(BINDER_DEBUG_TRANSACTION,
" node %d u%x -> ref %d desc %d\n",
" node %d u%p -> ref %d desc %d\n",
node->debug_id, node->ptr, ref->debug_id,
ref->desc);
} break;
@@ -1578,7 +1577,7 @@ static void binder_transaction(struct binder_proc *proc,
binder_inc_node(ref->node, fp->type == BINDER_TYPE_BINDER, 0, NULL);
trace_binder_transaction_ref_to_node(t, ref);
binder_debug(BINDER_DEBUG_TRANSACTION,
" ref %d desc %d -> node %d u%x\n",
" ref %d desc %d -> node %d u%p\n",
ref->debug_id, ref->desc, ref->node->debug_id,
ref->node->ptr);
} else {
@@ -1701,7 +1700,7 @@ err_dead_binder:
err_invalid_target_handle:
err_no_context_mgr_node:
binder_debug(BINDER_DEBUG_FAILED_TRANSACTION,
"%d:%d transaction failed %d, size %d-%d\n",
"%d:%d transaction failed %d, size %zd-%zd\n",
proc->pid, thread->pid, return_error,
tr->data_size, tr->offsets_size);
@@ -1720,7 +1719,7 @@ err_no_context_mgr_node:
}
int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
void __user *buffer, int size, int *consumed)
void __user *buffer, int size, signed long *consumed)
{
uint32_t cmd;
void __user *ptr = buffer + *consumed;
@@ -1736,16 +1735,11 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
proc->stats.bc[_IOC_NR(cmd)]++;
thread->stats.bc[_IOC_NR(cmd)]++;
}
/*
* since the transaction's IOCTL number are generated using
* _IOC(dir,type,nr,size), a different userspace size will not
* fall through
*/
switch (_IOC_NR(cmd)) {
case _IOC_NR(BC_INCREFS):
case _IOC_NR(BC_ACQUIRE):
case _IOC_NR(BC_RELEASE):
case _IOC_NR(BC_DECREFS): {
switch (cmd) {
case BC_INCREFS:
case BC_ACQUIRE:
case BC_RELEASE:
case BC_DECREFS: {
uint32_t target;
struct binder_ref *ref;
const char *debug_string;
@@ -1769,20 +1763,20 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
proc->pid, thread->pid, target);
break;
}
switch (_IOC_NR(cmd)) {
case _IOC_NR(BC_INCREFS):
switch (cmd) {
case BC_INCREFS:
debug_string = "IncRefs";
binder_inc_ref(ref, 0, NULL);
break;
case _IOC_NR(BC_ACQUIRE):
case BC_ACQUIRE:
debug_string = "Acquire";
binder_inc_ref(ref, 1, NULL);
break;
case _IOC_NR(BC_RELEASE):
case BC_RELEASE:
debug_string = "Release";
binder_dec_ref(ref, 1);
break;
case _IOC_NR(BC_DECREFS):
case BC_DECREFS:
default:
debug_string = "DecRefs";
binder_dec_ref(ref, 0);
@@ -1794,25 +1788,21 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
ref->desc, ref->strong, ref->weak, ref->node->debug_id);
break;
}
case _IOC_NR(BC_INCREFS_DONE):
case _IOC_NR(BC_ACQUIRE_DONE): {
userptr32_t node_ptr;
userptr32_t cookie;
case BC_INCREFS_DONE:
case BC_ACQUIRE_DONE: {
void __user *node_ptr;
void *cookie;
struct binder_node *node;
if (_IOC_SIZE(cmd) != sizeof(struct binder_ptr_cookie)) {
pr_err("binder: tranzaction structure size differs\n");
if (get_user(node_ptr, (void * __user *)ptr))
return -EFAULT;
}
if (get_user(node_ptr, (userptr32_t __user *)ptr))
ptr += sizeof(void *);
if (get_user(cookie, (void * __user *)ptr))
return -EFAULT;
ptr += sizeof(userptr32_t);
if (get_user(cookie, (userptr32_t __user *)ptr))
return -EFAULT;
ptr += sizeof(userptr32_t);
ptr += sizeof(void *);
node = binder_get_node(proc, node_ptr);
if (node == NULL) {
binder_user_error("%d:%d %s u%x no match\n",
binder_user_error("%d:%d %s u%p no match\n",
proc->pid, thread->pid,
cmd == BC_INCREFS_DONE ?
"BC_INCREFS_DONE" :
@@ -1821,7 +1811,7 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
break;
}
if (cookie != node->cookie) {
binder_user_error("%d:%d %s u%x node %d cookie mismatch %x != %x\n",
binder_user_error("%d:%d %s u%p node %d cookie mismatch %p != %p\n",
proc->pid, thread->pid,
cmd == BC_INCREFS_DONE ?
"BC_INCREFS_DONE" : "BC_ACQUIRE_DONE",
@@ -1854,34 +1844,34 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
node->debug_id, node->local_strong_refs, node->local_weak_refs);
break;
}
case _IOC_NR(BC_ATTEMPT_ACQUIRE):
case BC_ATTEMPT_ACQUIRE:
pr_err("BC_ATTEMPT_ACQUIRE not supported\n");
return -EINVAL;
case _IOC_NR(BC_ACQUIRE_RESULT):
case BC_ACQUIRE_RESULT:
pr_err("BC_ACQUIRE_RESULT not supported\n");
return -EINVAL;
case _IOC_NR(BC_FREE_BUFFER): {
userptr32_t data_ptr;
case BC_FREE_BUFFER: {
void __user *data_ptr;
struct binder_buffer *buffer;
if (get_user(data_ptr, (userptr32_t __user *)ptr))
if (get_user(data_ptr, (void * __user *)ptr))
return -EFAULT;
ptr += sizeof(userptr32_t);
ptr += sizeof(void *);
buffer = binder_buffer_lookup(proc, data_ptr);
if (buffer == NULL) {
binder_user_error("%d:%d BC_FREE_BUFFER u%x no match\n",
binder_user_error("%d:%d BC_FREE_BUFFER u%p no match\n",
proc->pid, thread->pid, data_ptr);
break;
}
if (!buffer->allow_user_free) {
binder_user_error("%d:%d BC_FREE_BUFFER u%x matched unreturned buffer\n",
binder_user_error("%d:%d BC_FREE_BUFFER u%p matched unreturned buffer\n",
proc->pid, thread->pid, data_ptr);
break;
}
binder_debug(BINDER_DEBUG_FREE_BUFFER,
"%d:%d BC_FREE_BUFFER u%x found buffer %d for %s transaction\n",
"%d:%d BC_FREE_BUFFER u%p found buffer %d for %s transaction\n",
proc->pid, thread->pid, data_ptr, buffer->debug_id,
buffer->transaction ? "active" : "finished");
@@ -1902,14 +1892,10 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
break;
}
case _IOC_NR(BC_TRANSACTION):
case _IOC_NR(BC_REPLY): {
case BC_TRANSACTION:
case BC_REPLY: {
struct binder_transaction_data tr;
if (_IOC_SIZE(cmd) != sizeof(tr)) {
pr_err("binder: tranzaction structure size differs\n");
return -EFAULT;
}
if (copy_from_user(&tr, ptr, sizeof(tr)))
return -EFAULT;
ptr += sizeof(tr);
@@ -1917,7 +1903,7 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
break;
}
case _IOC_NR(BC_REGISTER_LOOPER):
case BC_REGISTER_LOOPER:
binder_debug(BINDER_DEBUG_THREADS,
"%d:%d BC_REGISTER_LOOPER\n",
proc->pid, thread->pid);
@@ -1935,7 +1921,7 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
}
thread->looper |= BINDER_LOOPER_STATE_REGISTERED;
break;
case _IOC_NR(BC_ENTER_LOOPER):
case BC_ENTER_LOOPER:
binder_debug(BINDER_DEBUG_THREADS,
"%d:%d BC_ENTER_LOOPER\n",
proc->pid, thread->pid);
@@ -1946,26 +1932,26 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
}
thread->looper |= BINDER_LOOPER_STATE_ENTERED;
break;
case _IOC_NR(BC_EXIT_LOOPER):
case BC_EXIT_LOOPER:
binder_debug(BINDER_DEBUG_THREADS,
"%d:%d BC_EXIT_LOOPER\n",
proc->pid, thread->pid);
thread->looper |= BINDER_LOOPER_STATE_EXITED;
break;
case _IOC_NR(BC_REQUEST_DEATH_NOTIFICATION):
case _IOC_NR(BC_CLEAR_DEATH_NOTIFICATION): {
case BC_REQUEST_DEATH_NOTIFICATION:
case BC_CLEAR_DEATH_NOTIFICATION: {
uint32_t target;
userptr32_t cookie;
void __user *cookie;
struct binder_ref *ref;
struct binder_ref_death *death;
if (get_user(target, (uint32_t __user *)ptr))
return -EFAULT;
ptr += sizeof(uint32_t);
if (get_user(cookie, (userptr32_t __user *)ptr))
if (get_user(cookie, (void __user * __user *)ptr))
return -EFAULT;
ptr += sizeof(userptr32_t);
ptr += sizeof(void *);
ref = binder_get_ref(proc, target);
if (ref == NULL) {
binder_user_error("%d:%d %s invalid ref %d\n",
@@ -1978,7 +1964,7 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
}
binder_debug(BINDER_DEBUG_DEATH_NOTIFICATION,
"%d:%d %s %x ref %d desc %d s %d w %d for node %d\n",
"%d:%d %s %p ref %d desc %d s %d w %d for node %d\n",
proc->pid, thread->pid,
cmd == BC_REQUEST_DEATH_NOTIFICATION ?
"BC_REQUEST_DEATH_NOTIFICATION" :
@@ -2021,7 +2007,7 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
}
death = ref->death;
if (death->cookie != cookie) {
binder_user_error("%d:%d BC_CLEAR_DEATH_NOTIFICATION death notification cookie mismatch %x != %x\n",
binder_user_error("%d:%d BC_CLEAR_DEATH_NOTIFICATION death notification cookie mismatch %p != %p\n",
proc->pid, thread->pid,
death->cookie, cookie);
break;
@@ -2041,13 +2027,14 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
}
}
} break;
case _IOC_NR(BC_DEAD_BINDER_DONE): {
case BC_DEAD_BINDER_DONE: {
struct binder_work *w;
userptr32_t cookie;
void __user *cookie;
struct binder_ref_death *death = NULL;
if (get_user(cookie, (userptr32_t __user *)ptr))
if (get_user(cookie, (void __user * __user *)ptr))
return -EFAULT;
ptr += sizeof(userptr32_t);
ptr += sizeof(void *);
list_for_each_entry(w, &proc->delivered_death, entry) {
struct binder_ref_death *tmp_death = container_of(w, struct binder_ref_death, work);
if (tmp_death->cookie == cookie) {
@@ -2056,10 +2043,10 @@ int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
}
}
binder_debug(BINDER_DEBUG_DEAD_BINDER,
"%d:%d BC_DEAD_BINDER_DONE %x found %p\n",
"%d:%d BC_DEAD_BINDER_DONE %p found %p\n",
proc->pid, thread->pid, cookie, death);
if (death == NULL) {
binder_user_error("%d:%d BC_DEAD_BINDER_DONE %x not found\n",
binder_user_error("%d:%d BC_DEAD_BINDER_DONE %p not found\n",
proc->pid, thread->pid, cookie);
break;
}
@@ -2113,7 +2100,7 @@ static int binder_has_thread_work(struct binder_thread *thread)
static int binder_thread_read(struct binder_proc *proc,
struct binder_thread *thread,
void __user *buffer, int size,
int *consumed, int non_block)
signed long *consumed, int non_block)
{
void __user *ptr = buffer + *consumed;
void __user *end = buffer + size;
@@ -2259,22 +2246,22 @@ retry:
if (put_user(cmd, (uint32_t __user *)ptr))
return -EFAULT;
ptr += sizeof(uint32_t);
if (put_user((unsigned long)node->ptr, (userptr32_t __user *)ptr))
if (put_user(node->ptr, (void * __user *)ptr))
return -EFAULT;
ptr += sizeof(userptr32_t);
if (put_user((unsigned long)node->cookie, (userptr32_t __user *)ptr))
ptr += sizeof(void *);
if (put_user(node->cookie, (void * __user *)ptr))
return -EFAULT;
ptr += sizeof(userptr32_t);
ptr += sizeof(void *);
binder_stat_br(proc, thread, cmd);
binder_debug(BINDER_DEBUG_USER_REFS,
"%d:%d %s %d u%x c%x\n",
"%d:%d %s %d u%p c%p\n",
proc->pid, thread->pid, cmd_name, node->debug_id, node->ptr, node->cookie);
} else {
list_del_init(&w->entry);
if (!weak && !strong) {
binder_debug(BINDER_DEBUG_INTERNAL_REFS,
"%d:%d node %d u%x c%x deleted\n",
"%d:%d node %d u%p c%p deleted\n",
proc->pid, thread->pid, node->debug_id,
node->ptr, node->cookie);
rb_erase(&node->rb_node, &proc->nodes);
@@ -2282,7 +2269,7 @@ retry:
binder_stats_deleted(BINDER_STAT_NODE);
} else {
binder_debug(BINDER_DEBUG_INTERNAL_REFS,
"%d:%d node %d u%x c%x state unchanged\n",
"%d:%d node %d u%p c%p state unchanged\n",
proc->pid, thread->pid, node->debug_id, node->ptr,
node->cookie);
}
@@ -2302,12 +2289,12 @@ retry:
if (put_user(cmd, (uint32_t __user *)ptr))
return -EFAULT;
ptr += sizeof(uint32_t);
if (put_user((unsigned long)death->cookie, (userptr32_t __user *)ptr))
if (put_user(death->cookie, (void * __user *)ptr))
return -EFAULT;
ptr += sizeof(userptr32_t);
ptr += sizeof(void *);
binder_stat_br(proc, thread, cmd);
binder_debug(BINDER_DEBUG_DEATH_NOTIFICATION,
"%d:%d %s %x\n",
"%d:%d %s %p\n",
proc->pid, thread->pid,
cmd == BR_DEAD_BINDER ?
"BR_DEAD_BINDER" :
@@ -2342,8 +2329,8 @@ retry:
binder_set_nice(target_node->min_priority);
cmd = BR_TRANSACTION;
} else {
tr.target.ptr = 0;
tr.cookie = 0;
tr.target.ptr = NULL;
tr.cookie = NULL;
cmd = BR_REPLY;
}
tr.code = t->code;
@@ -2358,14 +2345,13 @@ retry:
tr.sender_pid = 0;
}
tr.data_size = (userptr32_t)t->buffer->data_size;
tr.offsets_size = (userptr32_t)t->buffer->offsets_size;
tr.data.ptr.buffer = (unsigned long)((void *)t->buffer->data +
proc->user_buffer_offset);
tr.data.ptr.offsets = (userptr32_t)(tr.data.ptr.buffer +
tr.data_size = t->buffer->data_size;
tr.offsets_size = t->buffer->offsets_size;
tr.data.ptr.buffer = (void *)t->buffer->data +
proc->user_buffer_offset;
tr.data.ptr.offsets = tr.data.ptr.buffer +
ALIGN(t->buffer->data_size,
sizeof(userptr32_t)));
sizeof(void *));
if (put_user(cmd, (uint32_t __user *)ptr))
return -EFAULT;
@@ -2377,7 +2363,7 @@ retry:
trace_binder_transaction_received(t);
binder_stat_br(proc, thread, cmd);
binder_debug(BINDER_DEBUG_TRANSACTION,
"%d:%d %s %d %d:%d, cmd %d size %zd-%zd ptr %x-%x\n",
"%d:%d %s %d %d:%d, cmd %d size %zd-%zd ptr %p-%p\n",
proc->pid, thread->pid,
(cmd == BR_TRANSACTION) ? "BR_TRANSACTION" :
"BR_REPLY",
@@ -2599,16 +2585,10 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
goto err;
}
/*
* since the transaction's IOCTL number are generated using
* _IOC(dir,type,nr,size), a different userspace size will not
* fall through
*/
switch (_IOC_NR(cmd)) {
case _IOC_NR(BINDER_WRITE_READ): {
switch (cmd) {
case BINDER_WRITE_READ: {
struct binder_write_read bwr;
if (size != sizeof(struct binder_write_read)) {
pr_err("binder: BINDER_WRITE_READ transaction size differs\n");
ret = -EINVAL;
goto err;
}
@@ -2617,12 +2597,12 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
goto err;
}
binder_debug(BINDER_DEBUG_READ_WRITE,
"%d:%d write %d at %08x, read %d at %08x\n",
"%d:%d write %ld at %08lx, read %ld at %08lx\n",
proc->pid, thread->pid, bwr.write_size,
bwr.write_buffer, bwr.read_size, bwr.read_buffer);
if (bwr.write_size > 0) {
ret = binder_thread_write(proc, thread, (void __user *)(unsigned long)(bwr.write_buffer), bwr.write_size, &bwr.write_consumed);
ret = binder_thread_write(proc, thread, (void __user *)bwr.write_buffer, bwr.write_size, &bwr.write_consumed);
trace_binder_write_done(ret);
if (ret < 0) {
bwr.read_consumed = 0;
@@ -2632,7 +2612,7 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
}
if (bwr.read_size > 0) {
ret = binder_thread_read(proc, thread, (void __user *)(unsigned long)(bwr.read_buffer), bwr.read_size, &bwr.read_consumed, filp->f_flags & O_NONBLOCK);
ret = binder_thread_read(proc, thread, (void __user *)bwr.read_buffer, bwr.read_size, &bwr.read_consumed, filp->f_flags & O_NONBLOCK);
trace_binder_read_done(ret);
if (!list_empty(&proc->todo))
wake_up_interruptible(&proc->wait);
@@ -2643,7 +2623,7 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
}
binder_debug(BINDER_DEBUG_READ_WRITE,
"%d:%d wrote %d of %d, read return %d of %d\n",
"%d:%d wrote %ld of %ld, read return %ld of %ld\n",
proc->pid, thread->pid, bwr.write_consumed, bwr.write_size,
bwr.read_consumed, bwr.read_size);
if (copy_to_user(ubuf, &bwr, sizeof(bwr))) {
@@ -2652,13 +2632,13 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
break;
}
case _IOC_NR(BINDER_SET_MAX_THREADS):
case BINDER_SET_MAX_THREADS:
if (copy_from_user(&proc->max_threads, ubuf, sizeof(proc->max_threads))) {
ret = -EINVAL;
goto err;
}
break;
case _IOC_NR(BINDER_SET_CONTEXT_MGR):
case BINDER_SET_CONTEXT_MGR:
if (binder_context_mgr_node != NULL) {
pr_err("BINDER_SET_CONTEXT_MGR already set\n");
ret = -EBUSY;
@@ -2677,7 +2657,7 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
} else
binder_context_mgr_uid = current->cred->euid;
binder_context_mgr_node = binder_new_node(proc, 0, 0);
binder_context_mgr_node = binder_new_node(proc, NULL, NULL);
if (binder_context_mgr_node == NULL) {
ret = -ENOMEM;
goto err;
@@ -2687,15 +2667,14 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
binder_context_mgr_node->has_strong_ref = 1;
binder_context_mgr_node->has_weak_ref = 1;
break;
case _IOC_NR(BINDER_THREAD_EXIT):
case BINDER_THREAD_EXIT:
binder_debug(BINDER_DEBUG_THREADS, "%d:%d exit\n",
proc->pid, thread->pid);
binder_free_thread(proc, thread);
thread = NULL;
break;
case _IOC_NR(BINDER_VERSION):
case BINDER_VERSION:
if (size != sizeof(struct binder_version)) {
pr_err("binder: BINDER_VERSION size differs\n");
ret = -EINVAL;
goto err;
}
@@ -2705,7 +2684,6 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
break;
default:
pr_err("binder: IOCTL No. not found\n");
ret = -EINVAL;
goto err;
}
@@ -3130,7 +3108,7 @@ static void print_binder_transaction(struct seq_file *m, const char *prefix,
struct binder_transaction *t)
{
seq_printf(m,
"%s %d: %p from %d:%d to %d:%d code %x flags %x pri %d r%d",
"%s %d: %p from %d:%d to %d:%d code %x flags %x pri %ld r%d",
prefix, t->debug_id, t,
t->from ? t->from->proc->pid : 0,
t->from ? t->from->pid : 0,
@@ -3175,7 +3153,7 @@ static void print_binder_work(struct seq_file *m, const char *prefix,
break;
case BINDER_WORK_NODE:
node = container_of(w, struct binder_node, work);
seq_printf(m, "%snode work %d: u%x c%x\n",
seq_printf(m, "%snode work %d: u%p c%p\n",
prefix, node->debug_id, node->ptr, node->cookie);
break;
case BINDER_WORK_DEAD_BINDER:
@@ -3236,7 +3214,7 @@ static void print_binder_node(struct seq_file *m, struct binder_node *node)
hlist_for_each_entry(ref, &node->refs, node_entry)
count++;
seq_printf(m, " node %d: u%x c%x hs %d hw %d ls %d lw %d is %d iw %d",
seq_printf(m, " node %d: u%p c%p hs %d hw %d ls %d lw %d is %d iw %d",
node->debug_id, node->ptr, node->cookie,
node->has_strong_ref, node->has_weak_ref,
node->local_strong_refs, node->local_weak_refs,
@@ -3539,7 +3517,6 @@ static const struct file_operations binder_fops = {
.owner = THIS_MODULE,
.poll = binder_poll,
.unlocked_ioctl = binder_ioctl,
.compat_ioctl = binder_ioctl, /* handler for 32-bit compat layer */
.mmap = binder_mmap,
.open = binder_open,
.flush = binder_flush,

308
drivers/staging/android/binder.h
View File

@@ -20,313 +20,7 @@
#ifndef _LINUX_BINDER_H
#define _LINUX_BINDER_H
#include <linux/ioctl.h>
#define B_PACK_CHARS(c1, c2, c3, c4) \
((((c1)<<24)) | (((c2)<<16)) | (((c3)<<8)) | (c4))
#define B_TYPE_LARGE 0x85
typedef uint32_t userptr32_t;
enum {
BINDER_TYPE_BINDER = B_PACK_CHARS('s', 'b', '*', B_TYPE_LARGE),
BINDER_TYPE_WEAK_BINDER = B_PACK_CHARS('w', 'b', '*', B_TYPE_LARGE),
BINDER_TYPE_HANDLE = B_PACK_CHARS('s', 'h', '*', B_TYPE_LARGE),
BINDER_TYPE_WEAK_HANDLE = B_PACK_CHARS('w', 'h', '*', B_TYPE_LARGE),
BINDER_TYPE_FD = B_PACK_CHARS('f', 'd', '*', B_TYPE_LARGE),
};
enum {
FLAT_BINDER_FLAG_PRIORITY_MASK = 0xff,
FLAT_BINDER_FLAG_ACCEPTS_FDS = 0x100,
};
/*
* This is the flattened representation of a Binder object for transfer
* between processes. The 'offsets' supplied as part of a binder transaction
* contains offsets into the data where these structures occur. The Binder
* driver takes care of re-writing the structure type and data as it moves
* between processes.
*/
struct flat_binder_object {
/* 8 bytes for large_flat_header. */
uint32_t type;
uint32_t flags;
/* 8 bytes of data. */
union {
userptr32_t binder; /* local object */
int32_t handle; /* remote object */
};
/* extra data associated with local object */
userptr32_t cookie;
};
/*
* On 64-bit platforms where user code may run in 32-bits the driver must
* translate the buffer (and local binder) addresses appropriately.
*/
struct binder_write_read {
int32_t write_size; /* bytes to write */
int32_t write_consumed; /* bytes consumed by driver */
uint32_t write_buffer;
int32_t read_size; /* bytes to read */
int32_t read_consumed; /* bytes consumed by driver */
uint32_t read_buffer;
};
/* Use with BINDER_VERSION, driver fills in fields. */
struct binder_version {
/* driver protocol version -- increment with incompatible change */
int32_t protocol_version;
};
/* This is the current protocol version. */
#define BINDER_CURRENT_PROTOCOL_VERSION 7
#define BINDER_WRITE_READ _IOWR('b', 1, struct binder_write_read)
#define BINDER_SET_IDLE_TIMEOUT _IOW('b', 3, __s64)
#define BINDER_SET_MAX_THREADS _IOW('b', 5, uint32_t)
#define BINDER_SET_IDLE_PRIORITY _IOW('b', 6, __s32)
#define BINDER_SET_CONTEXT_MGR _IOW('b', 7, __s32)
#define BINDER_THREAD_EXIT _IOW('b', 8, __s32)
#define BINDER_VERSION _IOWR('b', 9, struct binder_version)
/*
* NOTE: Two special error codes you should check for when calling
* in to the driver are:
*
* EINTR -- The operation has been interupted. This should be
* handled by retrying the ioctl() until a different error code
* is returned.
*
* ECONNREFUSED -- The driver is no longer accepting operations
* from your process. That is, the process is being destroyed.
* You should handle this by exiting from your process. Note
* that once this error code is returned, all further calls to
* the driver from any thread will return this same code.
*/
enum transaction_flags {
TF_ONE_WAY = 0x01, /* this is a one-way call: async, no return */
TF_ROOT_OBJECT = 0x04, /* contents are the component's root object */
TF_STATUS_CODE = 0x08, /* contents are a 32-bit status code */
TF_ACCEPT_FDS = 0x10, /* allow replies with file descriptors */
};
struct binder_transaction_data {
/* The first two are only used for bcTRANSACTION and brTRANSACTION,
* identifying the target and contents of the transaction.
*/
union {
uint32_t handle; /* target descriptor of command transaction */
userptr32_t ptr; /* target descriptor of return transaction */
} target;
userptr32_t cookie; /* target object cookie */
unsigned int code; /* transaction command */
/* General information about the transaction. */
__u32 flags;
pid_t sender_pid;
uid_t sender_euid;
uint32_t data_size; /* number of bytes of data */
uint32_t offsets_size; /* number of bytes of offsets */
/* If this transaction is inline, the data immediately
* follows here; otherwise, it ends with a pointer to
* the data buffer.
*/
union {
struct {
/* transaction data */
userptr32_t buffer;
/* offsets from buffer to flat_binder_object structs */
userptr32_t offsets;
} ptr;
__u8 buf[8];
} data;
};
struct binder_ptr_cookie {
userptr32_t tr;
userptr32_t cookie;
};
struct binder_pri_desc {
__s32 priority;
__u32 desc;
};
struct binder_pri_ptr_cookie {
int priority;
userptr32_t ptr;
userptr32_t cookie;
};
enum binder_driver_return_protocol {
BR_ERROR = _IOR('r', 0, __s32),
/*
* int: error code
*/
BR_OK = _IO('r', 1),
/* No parameters! */
BR_TRANSACTION = _IOR('r', 2, struct binder_transaction_data),
BR_REPLY = _IOR('r', 3, struct binder_transaction_data),
/*
* binder_transaction_data: the received command.
*/
BR_ACQUIRE_RESULT = _IOR('r', 4, __s32),
/*
* not currently supported
* int: 0 if the last bcATTEMPT_ACQUIRE was not successful.
* Else the remote object has acquired a primary reference.
*/
BR_DEAD_REPLY = _IO('r', 5),
/*
* The target of the last transaction (either a bcTRANSACTION or
* a bcATTEMPT_ACQUIRE) is no longer with us. No parameters.
*/
BR_TRANSACTION_COMPLETE = _IO('r', 6),
/*
* No parameters... always refers to the last transaction requested
* (including replies). Note that this will be sent even for
* asynchronous transactions.
*/
BR_INCREFS = _IOR('r', 7, struct binder_ptr_cookie),
BR_ACQUIRE = _IOR('r', 8, struct binder_ptr_cookie),
BR_RELEASE = _IOR('r', 9, struct binder_ptr_cookie),
BR_DECREFS = _IOR('r', 10, struct binder_ptr_cookie),
/*
* void *: ptr to binder
* void *: cookie for binder
*/
BR_ATTEMPT_ACQUIRE = _IOR('r', 11, struct binder_pri_ptr_cookie),
/*
* not currently supported
* int: priority
* void *: ptr to binder
* void *: cookie for binder
*/
BR_NOOP = _IO('r', 12),
/*
* No parameters. Do nothing and examine the next command. It exists
* primarily so that we can replace it with a BR_SPAWN_LOOPER command.
*/
BR_SPAWN_LOOPER = _IO('r', 13),
/*
* No parameters. The driver has determined that a process has no
* threads waiting to service incoming transactions. When a process
* receives this command, it must spawn a new service thread and
* register it via bcENTER_LOOPER.
*/
BR_FINISHED = _IO('r', 14),
/*
* not currently supported
* stop threadpool thread
*/
BR_DEAD_BINDER = _IOR('r', 15, userptr32_t),
/*
* void *: cookie
*/
BR_CLEAR_DEATH_NOTIFICATION_DONE = _IOR('r', 16, userptr32_t),
/*
* void *: cookie
*/
BR_FAILED_REPLY = _IO('r', 17),
/*
* The the last transaction (either a bcTRANSACTION or
* a bcATTEMPT_ACQUIRE) failed (e.g. out of memory). No parameters.
*/
};
enum binder_driver_command_protocol {
BC_TRANSACTION = _IOW('c', 0, struct binder_transaction_data),
BC_REPLY = _IOW('c', 1, struct binder_transaction_data),
/*
* binder_transaction_data: the sent command.
*/
BC_ACQUIRE_RESULT = _IOW('c', 2, __s32),
/*
* not currently supported
* int: 0 if the last BR_ATTEMPT_ACQUIRE was not successful.
* Else you have acquired a primary reference on the object.
*/
BC_FREE_BUFFER = _IOW('c', 3, void *),
/*
* void *: ptr to transaction data received on a read
*/
BC_INCREFS = _IOW('c', 4, __u32),
BC_ACQUIRE = _IOW('c', 5, __u32),
BC_RELEASE = _IOW('c', 6, __u32),
BC_DECREFS = _IOW('c', 7, __u32),
/*
* int: descriptor
*/
BC_INCREFS_DONE = _IOW('c', 8, struct binder_ptr_cookie),
BC_ACQUIRE_DONE = _IOW('c', 9, struct binder_ptr_cookie),
/*
* void *: ptr to binder
* void *: cookie for binder
*/
BC_ATTEMPT_ACQUIRE = _IOW('c', 10, struct binder_pri_desc),
/*
* not currently supported
* int: priority
* int: descriptor
*/
BC_REGISTER_LOOPER = _IO('c', 11),
/*
* No parameters.
* Register a spawned looper thread with the device.
*/
BC_ENTER_LOOPER = _IO('c', 12),
BC_EXIT_LOOPER = _IO('c', 13),
/*
* No parameters.
* These two commands are sent as an application-level thread
* enters and exits the binder loop, respectively. They are
* used so the binder can have an accurate count of the number
* of looping threads it has available.
*/
BC_REQUEST_DEATH_NOTIFICATION = _IOW('c', 14, struct binder_ptr_cookie),
/*
* void *: ptr to binder
* void *: cookie
*/
BC_CLEAR_DEATH_NOTIFICATION = _IOW('c', 15, struct binder_ptr_cookie),
/*
* void *: ptr to binder
* void *: cookie
*/
BC_DEAD_BINDER_DONE = _IOW('c', 16, userptr32_t),
/*
* void *: cookie
*/
};
#include "uapi/binder.h"
#endif /* _LINUX_BINDER_H */