summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/staging/Kconfig2
-rw-r--r--drivers/staging/Makefile1
-rw-r--r--drivers/staging/android/Kconfig96
-rw-r--r--drivers/staging/android/Makefile6
-rw-r--r--drivers/staging/android/TODO10
-rw-r--r--drivers/staging/android/binder.c3767
-rw-r--r--drivers/staging/android/binder.h330
-rw-r--r--drivers/staging/android/logger.c607
-rw-r--r--drivers/staging/android/logger.h48
-rw-r--r--drivers/staging/android/lowmemorykiller.c173
-rw-r--r--drivers/staging/android/ram_console.c410
-rw-r--r--drivers/staging/android/timed_gpio.c166
-rw-r--r--drivers/staging/android/timed_gpio.h33
-rw-r--r--drivers/staging/android/timed_output.c121
-rw-r--r--drivers/staging/android/timed_output.h37
15 files changed, 0 insertions, 5807 deletions
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 56b2750..5dccf6b 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -83,8 +83,6 @@ source "drivers/staging/mimio/Kconfig"
source "drivers/staging/frontier/Kconfig"
-source "drivers/staging/android/Kconfig"
-
source "drivers/staging/dream/Kconfig"
source "drivers/staging/dst/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index edae7d6..2f228f9 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -24,7 +24,6 @@ obj-$(CONFIG_RTL8192SU) += rtl8192su/
obj-$(CONFIG_RTL8192E) += rtl8192e/
obj-$(CONFIG_INPUT_MIMIO) += mimio/
obj-$(CONFIG_TRANZPORT) += frontier/
-obj-$(CONFIG_ANDROID) += android/
obj-$(CONFIG_DREAM) += dream/
obj-$(CONFIG_DST) += dst/
obj-$(CONFIG_POHMELFS) += pohmelfs/
diff --git a/drivers/staging/android/Kconfig b/drivers/staging/android/Kconfig
deleted file mode 100644
index eb67563..0000000
--- a/drivers/staging/android/Kconfig
+++ /dev/null
@@ -1,96 +0,0 @@
-menu "Android"
-
-config ANDROID
- bool "Android Drivers"
- depends on BROKEN
- default N
- ---help---
- Enable support for various drivers needed on the Android platform
-
-if ANDROID
-
-config ANDROID_BINDER_IPC
- bool "Android Binder IPC Driver"
- default n
-
-config ANDROID_LOGGER
- tristate "Android log driver"
- default n
-
-config ANDROID_RAM_CONSOLE
- bool "Android RAM buffer console"
- default n
-
-config ANDROID_RAM_CONSOLE_ENABLE_VERBOSE
- bool "Enable verbose console messages on Android RAM console"
- default y
- depends on ANDROID_RAM_CONSOLE
-
-menuconfig ANDROID_RAM_CONSOLE_ERROR_CORRECTION
- bool "Android RAM Console Enable error correction"
- default n
- depends on ANDROID_RAM_CONSOLE
- depends on !ANDROID_RAM_CONSOLE_EARLY_INIT
- select REED_SOLOMON
- select REED_SOLOMON_ENC8
- select REED_SOLOMON_DEC8
-
-if ANDROID_RAM_CONSOLE_ERROR_CORRECTION
-
-config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_DATA_SIZE
- int "Android RAM Console Data data size"
- default 128
- help
- Must be a power of 2.
-
-config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_ECC_SIZE
- int "Android RAM Console ECC size"
- default 16
-
-config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE
- int "Android RAM Console Symbol size"
- default 8
-
-config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_POLYNOMIAL
- hex "Android RAM Console Polynomial"
- default 0x19 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 4)
- default 0x29 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 5)
- default 0x61 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 6)
- default 0x89 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 7)
- default 0x11d if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 8)
-
-endif # ANDROID_RAM_CONSOLE_ERROR_CORRECTION
-
-config ANDROID_RAM_CONSOLE_EARLY_INIT
- bool "Start Android RAM console early"
- default n
- depends on ANDROID_RAM_CONSOLE
-
-config ANDROID_RAM_CONSOLE_EARLY_ADDR
- hex "Android RAM console virtual address"
- default 0
- depends on ANDROID_RAM_CONSOLE_EARLY_INIT
-
-config ANDROID_RAM_CONSOLE_EARLY_SIZE
- hex "Android RAM console buffer size"
- default 0
- depends on ANDROID_RAM_CONSOLE_EARLY_INIT
-
-config ANDROID_TIMED_OUTPUT
- bool "Timed output class driver"
- default y
-
-config ANDROID_TIMED_GPIO
- tristate "Android timed gpio driver"
- depends on GENERIC_GPIO && ANDROID_TIMED_OUTPUT
- default n
-
-config ANDROID_LOW_MEMORY_KILLER
- bool "Android Low Memory Killer"
- default N
- ---help---
- Register processes to be killed when memory is low
-
-endif # if ANDROID
-
-endmenu
diff --git a/drivers/staging/android/Makefile b/drivers/staging/android/Makefile
deleted file mode 100644
index 8e057e6..0000000
--- a/drivers/staging/android/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-obj-$(CONFIG_ANDROID_BINDER_IPC) += binder.o
-obj-$(CONFIG_ANDROID_LOGGER) += logger.o
-obj-$(CONFIG_ANDROID_RAM_CONSOLE) += ram_console.o
-obj-$(CONFIG_ANDROID_TIMED_OUTPUT) += timed_output.o
-obj-$(CONFIG_ANDROID_TIMED_GPIO) += timed_gpio.o
-obj-$(CONFIG_ANDROID_LOW_MEMORY_KILLER) += lowmemorykiller.o
diff --git a/drivers/staging/android/TODO b/drivers/staging/android/TODO
deleted file mode 100644
index e59c5be..0000000
--- a/drivers/staging/android/TODO
+++ /dev/null
@@ -1,10 +0,0 @@
-TODO:
- - checkpatch.pl cleanups
- - sparse fixes
- - rename files to be not so "generic"
- - make sure things build as modules properly
- - add proper arch dependancies as needed
- - audit userspace interfaces to make sure they are sane
-
-Please send patches to Greg Kroah-Hartman <greg@kroah.com> and Cc:
-Brian Swetland <swetland@google.com>
diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
deleted file mode 100644
index 99010d4..0000000
--- a/drivers/staging/android/binder.c
+++ /dev/null
@@ -1,3767 +0,0 @@
-/* binder.c
- *
- * Android IPC Subsystem
- *
- * Copyright (C) 2007-2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <asm/cacheflush.h>
-#include <linux/fdtable.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/list.h>
-#include <linux/miscdevice.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/nsproxy.h>
-#include <linux/poll.h>
-#include <linux/proc_fs.h>
-#include <linux/rbtree.h>
-#include <linux/sched.h>
-#include <linux/uaccess.h>
-#include <linux/vmalloc.h>
-
-#include "binder.h"
-
-static DEFINE_MUTEX(binder_lock);
-static DEFINE_MUTEX(binder_deferred_lock);
-
-static HLIST_HEAD(binder_procs);
-static HLIST_HEAD(binder_deferred_list);
-static HLIST_HEAD(binder_dead_nodes);
-
-static struct proc_dir_entry *binder_proc_dir_entry_root;
-static struct proc_dir_entry *binder_proc_dir_entry_proc;
-static struct binder_node *binder_context_mgr_node;
-static uid_t binder_context_mgr_uid = -1;
-static int binder_last_id;
-
-static int binder_read_proc_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-
-/* This is only defined in include/asm-arm/sizes.h */
-#ifndef SZ_1K
-#define SZ_1K 0x400
-#endif
-
-#ifndef SZ_4M
-#define SZ_4M 0x400000
-#endif
-
-#define FORBIDDEN_MMAP_FLAGS (VM_WRITE)
-
-#define BINDER_SMALL_BUF_SIZE (PAGE_SIZE * 64)
-
-enum {
- BINDER_DEBUG_USER_ERROR = 1U << 0,
- BINDER_DEBUG_FAILED_TRANSACTION = 1U << 1,
- BINDER_DEBUG_DEAD_TRANSACTION = 1U << 2,
- BINDER_DEBUG_OPEN_CLOSE = 1U << 3,
- BINDER_DEBUG_DEAD_BINDER = 1U << 4,
- BINDER_DEBUG_DEATH_NOTIFICATION = 1U << 5,
- BINDER_DEBUG_READ_WRITE = 1U << 6,
- BINDER_DEBUG_USER_REFS = 1U << 7,
- BINDER_DEBUG_THREADS = 1U << 8,
- BINDER_DEBUG_TRANSACTION = 1U << 9,
- BINDER_DEBUG_TRANSACTION_COMPLETE = 1U << 10,
- BINDER_DEBUG_FREE_BUFFER = 1U << 11,
- BINDER_DEBUG_INTERNAL_REFS = 1U << 12,
- BINDER_DEBUG_BUFFER_ALLOC = 1U << 13,
- BINDER_DEBUG_PRIORITY_CAP = 1U << 14,
- BINDER_DEBUG_BUFFER_ALLOC_ASYNC = 1U << 15,
-};
-static uint32_t binder_debug_mask = BINDER_DEBUG_USER_ERROR |
- BINDER_DEBUG_FAILED_TRANSACTION | BINDER_DEBUG_DEAD_TRANSACTION;
-module_param_named(debug_mask, binder_debug_mask, uint, S_IWUSR | S_IRUGO);
-
-static int binder_debug_no_lock;
-module_param_named(proc_no_lock, binder_debug_no_lock, bool, S_IWUSR | S_IRUGO);
-
-static DECLARE_WAIT_QUEUE_HEAD(binder_user_error_wait);
-static int binder_stop_on_user_error;
-
-static int binder_set_stop_on_user_error(const char *val,
- struct kernel_param *kp)
-{
- int ret;
- ret = param_set_int(val, kp);
- if (binder_stop_on_user_error < 2)
- wake_up(&binder_user_error_wait);
- return ret;
-}
-module_param_call(stop_on_user_error, binder_set_stop_on_user_error,
- param_get_int, &binder_stop_on_user_error, S_IWUSR | S_IRUGO);
-
-#define binder_debug(mask, x...) \
- do { \
- if (binder_debug_mask & mask) \
- printk(KERN_INFO x); \
- } while (0)
-
-#define binder_user_error(x...) \
- do { \
- if (binder_debug_mask & BINDER_DEBUG_USER_ERROR) \
- printk(KERN_INFO x); \
- if (binder_stop_on_user_error) \
- binder_stop_on_user_error = 2; \
- } while (0)
-
-enum binder_stat_types {
- BINDER_STAT_PROC,
- BINDER_STAT_THREAD,
- BINDER_STAT_NODE,
- BINDER_STAT_REF,
- BINDER_STAT_DEATH,
- BINDER_STAT_TRANSACTION,
- BINDER_STAT_TRANSACTION_COMPLETE,
- BINDER_STAT_COUNT
-};
-
-struct binder_stats {
- int br[_IOC_NR(BR_FAILED_REPLY) + 1];
- int bc[_IOC_NR(BC_DEAD_BINDER_DONE) + 1];
- int obj_created[BINDER_STAT_COUNT];
- int obj_deleted[BINDER_STAT_COUNT];
-};
-
-static struct binder_stats binder_stats;
-
-static inline void binder_stats_deleted(enum binder_stat_types type)
-{
- binder_stats.obj_deleted[type]++;
-}
-
-static inline void binder_stats_created(enum binder_stat_types type)
-{
- binder_stats.obj_created[type]++;
-}
-
-struct binder_transaction_log_entry {
- int debug_id;
- int call_type;
- int from_proc;
- int from_thread;
- int target_handle;
- int to_proc;
- int to_thread;
- int to_node;
- int data_size;
- int offsets_size;
-};
-struct binder_transaction_log {
- int next;
- int full;
- struct binder_transaction_log_entry entry[32];
-};
-static struct binder_transaction_log binder_transaction_log;
-static struct binder_transaction_log binder_transaction_log_failed;
-
-static struct binder_transaction_log_entry *binder_transaction_log_add(
- struct binder_transaction_log *log)
-{
- struct binder_transaction_log_entry *e;
- e = &log->entry[log->next];
- memset(e, 0, sizeof(*e));
- log->next++;
- if (log->next == ARRAY_SIZE(log->entry)) {
- log->next = 0;
- log->full = 1;
- }
- return e;
-}
-
-struct binder_work {
- struct list_head entry;
- enum {
- BINDER_WORK_TRANSACTION = 1,
- BINDER_WORK_TRANSACTION_COMPLETE,
- BINDER_WORK_NODE,
- BINDER_WORK_DEAD_BINDER,
- BINDER_WORK_DEAD_BINDER_AND_CLEAR,
- BINDER_WORK_CLEAR_DEATH_NOTIFICATION,
- } type;
-};
-
-struct binder_node {
- int debug_id;
- struct binder_work work;
- union {
- struct rb_node rb_node;
- struct hlist_node dead_node;
- };
- struct binder_proc *proc;
- struct hlist_head refs;
- int internal_strong_refs;
- int local_weak_refs;
- int local_strong_refs;
- void __user *ptr;
- void __user *cookie;
- unsigned has_strong_ref:1;
- unsigned pending_strong_ref:1;
- unsigned has_weak_ref:1;
- unsigned pending_weak_ref:1;
- unsigned has_async_transaction:1;
- unsigned accept_fds:1;
- unsigned min_priority:8;
- struct list_head async_todo;
-};
-
-struct binder_ref_death {
- struct binder_work work;
- void __user *cookie;
-};
-
-struct binder_ref {
- /* Lookups needed: */
- /* node + proc => ref (transaction) */
- /* desc + proc => ref (transaction, inc/dec ref) */
- /* node => refs + procs (proc exit) */
- int debug_id;
- struct rb_node rb_node_desc;
- struct rb_node rb_node_node;
- struct hlist_node node_entry;
- struct binder_proc *proc;
- struct binder_node *node;
- uint32_t desc;
- int strong;
- int weak;
- struct binder_ref_death *death;
-};
-
-struct binder_buffer {
- struct list_head entry; /* free and allocated entries by addesss */
- struct rb_node rb_node; /* free entry by size or allocated entry */
- /* by address */
- unsigned free:1;
- unsigned allow_user_free:1;
- unsigned async_transaction:1;
- unsigned debug_id:29;
-
- struct binder_transaction *transaction;
-
- struct binder_node *target_node;
- size_t data_size;
- size_t offsets_size;
- uint8_t data[0];
-};
-
-enum binder_deferred_state {
- BINDER_DEFERRED_PUT_FILES = 0x01,
- BINDER_DEFERRED_FLUSH = 0x02,
- BINDER_DEFERRED_RELEASE = 0x04,
-};
-
-struct binder_proc {
- struct hlist_node proc_node;
- struct rb_root threads;
- struct rb_root nodes;
- struct rb_root refs_by_desc;
- struct rb_root refs_by_node;
- int pid;
- struct vm_area_struct *vma;
- struct task_struct *tsk;
- struct files_struct *files;
- struct hlist_node deferred_work_node;
- int deferred_work;
- void *buffer;
- ptrdiff_t user_buffer_offset;
-
- struct list_head buffers;
- struct rb_root free_buffers;
- struct rb_root allocated_buffers;
- size_t free_async_space;
-
- struct page **pages;
- size_t buffer_size;
- uint32_t buffer_free;
- struct list_head todo;
- wait_queue_head_t wait;
- struct binder_stats stats;
- struct list_head delivered_death;
- int max_threads;
- int requested_threads;
- int requested_threads_started;
- int ready_threads;
- long default_priority;
-};
-
-enum {
- BINDER_LOOPER_STATE_REGISTERED = 0x01,
- BINDER_LOOPER_STATE_ENTERED = 0x02,
- BINDER_LOOPER_STATE_EXITED = 0x04,
- BINDER_LOOPER_STATE_INVALID = 0x08,
- BINDER_LOOPER_STATE_WAITING = 0x10,
- BINDER_LOOPER_STATE_NEED_RETURN = 0x20
-};
-
-struct binder_thread {
- struct binder_proc *proc;
- struct rb_node rb_node;
- int pid;
- int looper;
- struct binder_transaction *transaction_stack;
- struct list_head todo;
- uint32_t return_error; /* Write failed, return error code in read buf */
- uint32_t return_error2; /* Write failed, return error code in read */
- /* buffer. Used when sending a reply to a dead process that */
- /* we are also waiting on */
- wait_queue_head_t wait;
- struct binder_stats stats;
-};
-
-struct binder_transaction {
- int debug_id;
- struct binder_work work;
- struct binder_thread *from;
- struct binder_transaction *from_parent;
- struct binder_proc *to_proc;
- struct binder_thread *to_thread;
- struct binder_transaction *to_parent;
- unsigned need_reply:1;
- /* unsigned is_dead:1; */ /* not used at the moment */
-
- struct binder_buffer *buffer;
- unsigned int code;
- unsigned int flags;
- long priority;
- long saved_priority;
- uid_t sender_euid;
-};
-
-static void
-binder_defer_work(struct binder_proc *proc, enum binder_deferred_state defer);
-
-/*
- * copied from get_unused_fd_flags
- */
-int task_get_unused_fd_flags(struct binder_proc *proc, int flags)
-{
- struct files_struct *files = proc->files;
- int fd, error;
- struct fdtable *fdt;
- unsigned long rlim_cur;
- unsigned long irqs;
-
- if (files == NULL)
- return -ESRCH;
-
- error = -EMFILE;
- spin_lock(&files->file_lock);
-
-repeat:
- fdt = files_fdtable(files);
- fd = find_next_zero_bit(fdt->open_fds->fds_bits, fdt->max_fds,
- files->next_fd);
-
- /*
- * N.B. For clone tasks sharing a files structure, this test
- * will limit the total number of files that can be opened.
- */
- rlim_cur = 0;
- if (lock_task_sighand(proc->tsk, &irqs)) {
- rlim_cur = proc->tsk->signal->rlim[RLIMIT_NOFILE].rlim_cur;
- unlock_task_sighand(proc->tsk, &irqs);
- }
- if (fd >= rlim_cur)
- goto out;
-
- /* Do we need to expand the fd array or fd set? */
- error = expand_files(files, fd);
- if (error < 0)
- goto out;
-
- if (error) {
- /*
- * If we needed to expand the fs array we
- * might have blocked - try again.
- */
- error = -EMFILE;
- goto repeat;
- }
-
- FD_SET(fd, fdt->open_fds);
- if (flags & O_CLOEXEC)
- FD_SET(fd, fdt->close_on_exec);
- else
- FD_CLR(fd, fdt->close_on_exec);
- files->next_fd = fd + 1;
-#if 1
- /* Sanity check */
- if (fdt->fd[fd] != NULL) {
- printk(KERN_WARNING "get_unused_fd: slot %d not NULL!\n", fd);
- fdt->fd[fd] = NULL;
- }
-#endif
- error = fd;
-
-out:
- spin_unlock(&files->file_lock);
- return error;
-}
-
-/*
- * copied from fd_install
- */
-static void task_fd_install(
- struct binder_proc *proc, unsigned int fd, struct file *file)
-{
- struct files_struct *files = proc->files;
- struct fdtable *fdt;
-
- if (files == NULL)
- return;
-
- spin_lock(&files->file_lock);
- fdt = files_fdtable(files);
- BUG_ON(fdt->fd[fd] != NULL);
- rcu_assign_pointer(fdt->fd[fd], file);
- spin_unlock(&files->file_lock);
-}
-
-/*
- * copied from __put_unused_fd in open.c
- */
-static void __put_unused_fd(struct files_struct *files, unsigned int fd)
-{
- struct fdtable *fdt = files_fdtable(files);
- __FD_CLR(fd, fdt->open_fds);
- if (fd < files->next_fd)
- files->next_fd = fd;
-}
-
-/*
- * copied from sys_close
- */
-static long task_close_fd(struct binder_proc *proc, unsigned int fd)
-{
- struct file *filp;
- struct files_struct *files = proc->files;
- struct fdtable *fdt;
- int retval;
-
- if (files == NULL)
- return -ESRCH;
-
- spin_lock(&files->file_lock);
- fdt = files_fdtable(files);
- if (fd >= fdt->max_fds)
- goto out_unlock;
- filp = fdt->fd[fd];
- if (!filp)
- goto out_unlock;
- rcu_assign_pointer(fdt->fd[fd], NULL);
- FD_CLR(fd, fdt->close_on_exec);
- __put_unused_fd(files, fd);
- spin_unlock(&files->file_lock);
- retval = filp_close(filp, files);
-
- /* can't restart close syscall because file table entry was cleared */
- if (unlikely(retval == -ERESTARTSYS ||
- retval == -ERESTARTNOINTR ||
- retval == -ERESTARTNOHAND ||
- retval == -ERESTART_RESTARTBLOCK))
- retval = -EINTR;
-
- return retval;
-
-out_unlock:
- spin_unlock(&files->file_lock);
- return -EBADF;
-}
-
-static void binder_set_nice(long 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,
- "binder: %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)
- return;
- binder_user_error("binder: %d RLIMIT_NICE not set\n", current->pid);
-}
-
-static size_t binder_buffer_size(struct binder_proc *proc,
- struct binder_buffer *buffer)
-{
- if (list_is_last(&buffer->entry, &proc->buffers))
- return proc->buffer + proc->buffer_size - (void *)buffer->data;
- else
- return (size_t)list_entry(buffer->entry.next,
- struct binder_buffer, entry) - (size_t)buffer->data;
-}
-
-static void binder_insert_free_buffer(struct binder_proc *proc,
- struct binder_buffer *new_buffer)
-{
- struct rb_node **p = &proc->free_buffers.rb_node;
- struct rb_node *parent = NULL;
- struct binder_buffer *buffer;
- size_t buffer_size;
- size_t new_buffer_size;
-
- BUG_ON(!new_buffer->free);
-
- new_buffer_size = binder_buffer_size(proc, new_buffer);
-
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: add free buffer, size %zd, "
- "at %p\n", proc->pid, new_buffer_size, new_buffer);
-
- while (*p) {
- parent = *p;
- buffer = rb_entry(parent, struct binder_buffer, rb_node);
- BUG_ON(!buffer->free);
-
- buffer_size = binder_buffer_size(proc, buffer);
-
- if (new_buffer_size < buffer_size)
- p = &parent->rb_left;
- else
- p = &parent->rb_right;
- }
- rb_link_node(&new_buffer->rb_node, parent, p);
- rb_insert_color(&new_buffer->rb_node, &proc->free_buffers);
-}
-
-static void binder_insert_allocated_buffer(struct binder_proc *proc,
- struct binder_buffer *new_buffer)
-{
- struct rb_node **p = &proc->allocated_buffers.rb_node;
- struct rb_node *parent = NULL;
- struct binder_buffer *buffer;
-
- BUG_ON(new_buffer->free);
-
- while (*p) {
- parent = *p;
- buffer = rb_entry(parent, struct binder_buffer, rb_node);
- BUG_ON(buffer->free);
-
- if (new_buffer < buffer)
- p = &parent->rb_left;
- else if (new_buffer > buffer)
- p = &parent->rb_right;
- else
- BUG();
- }
- rb_link_node(&new_buffer->rb_node, parent, p);
- rb_insert_color(&new_buffer->rb_node, &proc->allocated_buffers);
-}
-
-static struct binder_buffer *binder_buffer_lookup(struct binder_proc *proc,
- void __user *user_ptr)
-{
- struct rb_node *n = proc->allocated_buffers.rb_node;
- struct binder_buffer *buffer;
- struct binder_buffer *kern_ptr;
-
- kern_ptr = user_ptr - proc->user_buffer_offset
- - offsetof(struct binder_buffer, data);
-
- while (n) {
- buffer = rb_entry(n, struct binder_buffer, rb_node);
- BUG_ON(buffer->free);
-
- if (kern_ptr < buffer)
- n = n->rb_left;
- else if (kern_ptr > buffer)
- n = n->rb_right;
- else
- return buffer;
- }
- return NULL;
-}
-
-static int binder_update_page_range(struct binder_proc *proc, int allocate,
- void *start, void *end,
- struct vm_area_struct *vma)
-{
- void *page_addr;
- unsigned long user_page_addr;
- struct vm_struct tmp_area;
- struct page **page;
- struct mm_struct *mm;
-
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: %s pages %p-%p\n", proc->pid,
- allocate ? "allocate" : "free", start, end);
-
- if (end <= start)
- return 0;
-
- if (vma)
- mm = NULL;
- else
- mm = get_task_mm(proc->tsk);
-
- if (mm) {
- down_write(&mm->mmap_sem);
- vma = proc->vma;
- }
-
- if (allocate == 0)
- goto free_range;
-
- if (vma == NULL) {
- printk(KERN_ERR "binder: %d: binder_alloc_buf failed to "
- "map pages in userspace, no vma\n", proc->pid);
- goto err_no_vma;
- }
-
- for (page_addr = start; page_addr < end; page_addr += PAGE_SIZE) {
- int ret;
- struct page **page_array_ptr;
- page = &proc->pages[(page_addr - proc->buffer) / PAGE_SIZE];
-
- BUG_ON(*page);
- *page = alloc_page(GFP_KERNEL | __GFP_ZERO);
- if (*page == NULL) {
- printk(KERN_ERR "binder: %d: binder_alloc_buf failed "
- "for page at %p\n", proc->pid, page_addr);
- goto err_alloc_page_failed;
- }
- tmp_area.addr = page_addr;
- tmp_area.size = PAGE_SIZE + PAGE_SIZE /* guard page? */;
- page_array_ptr = page;
- ret = map_vm_area(&tmp_area, PAGE_KERNEL, &page_array_ptr);
- if (ret) {
- printk(KERN_ERR "binder: %d: binder_alloc_buf failed "
- "to map page at %p in kernel\n",
- proc->pid, page_addr);
- goto err_map_kernel_failed;
- }
- user_page_addr =
- (uintptr_t)page_addr + proc->user_buffer_offset;
- ret = vm_insert_page(vma, user_page_addr, page[0]);
- if (ret) {
- printk(KERN_ERR "binder: %d: binder_alloc_buf failed "
- "to map page at %lx in userspace\n",
- proc->pid, user_page_addr);
- goto err_vm_insert_page_failed;
- }
- /* vm_insert_page does not seem to increment the refcount */
- }
- if (mm) {
- up_write(&mm->mmap_sem);
- mmput(mm);
- }
- return 0;
-
-free_range:
- for (page_addr = end - PAGE_SIZE; page_addr >= start;
- page_addr -= PAGE_SIZE) {
- page = &proc->pages[(page_addr - proc->buffer) / PAGE_SIZE];
- if (vma)
- zap_page_range(vma, (uintptr_t)page_addr +
- proc->user_buffer_offset, PAGE_SIZE, NULL);
-err_vm_insert_page_failed:
- unmap_kernel_range((unsigned long)page_addr, PAGE_SIZE);
-err_map_kernel_failed:
- __free_page(*page);
- *page = NULL;
-err_alloc_page_failed:
- ;
- }
-err_no_vma:
- if (mm) {
- up_write(&mm->mmap_sem);
- mmput(mm);
- }
- return -ENOMEM;
-}
-
-static struct binder_buffer *binder_alloc_buf(struct binder_proc *proc,
- size_t data_size,
- size_t offsets_size, int is_async)
-{
- struct rb_node *n = proc->free_buffers.rb_node;
- struct binder_buffer *buffer;
- size_t buffer_size;
- struct rb_node *best_fit = NULL;
- void *has_page_addr;
- void *end_page_addr;
- size_t size;
-
- if (proc->vma == NULL) {
- printk(KERN_ERR "binder: %d: binder_alloc_buf, no vma\n",
- proc->pid);
- return NULL;
- }
-
- size = ALIGN(data_size, sizeof(void *)) +
- ALIGN(offsets_size, sizeof(void *));
-
- if (size < data_size || size < offsets_size) {
- binder_user_error("binder: %d: got transaction with invalid "
- "size %zd-%zd\n", proc->pid, data_size, offsets_size);
- return NULL;
- }
-
- if (is_async &&
- proc->free_async_space < size + sizeof(struct binder_buffer)) {
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: binder_alloc_buf size %zd"
- "failed, no async space left\n", proc->pid, size);
- return NULL;
- }
-
- while (n) {
- buffer = rb_entry(n, struct binder_buffer, rb_node);
- BUG_ON(!buffer->free);
- buffer_size = binder_buffer_size(proc, buffer);
-
- if (size < buffer_size) {
- best_fit = n;
- n = n->rb_left;
- } else if (size > buffer_size)
- n = n->rb_right;
- else {
- best_fit = n;
- break;
- }
- }
- if (best_fit == NULL) {
- printk(KERN_ERR "binder: %d: binder_alloc_buf size %zd failed, "
- "no address space\n", proc->pid, size);
- return NULL;
- }
- if (n == NULL) {
- buffer = rb_entry(best_fit, struct binder_buffer, rb_node);
- buffer_size = binder_buffer_size(proc, buffer);
- }
-
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: binder_alloc_buf size %zd got buff"
- "er %p size %zd\n", proc->pid, size, buffer, buffer_size);
-
- has_page_addr =
- (void *)(((uintptr_t)buffer->data + buffer_size) & PAGE_MASK);
- if (n == NULL) {
- if (size + sizeof(struct binder_buffer) + 4 >= buffer_size)
- buffer_size = size; /* no room for other buffers */
- else
- buffer_size = size + sizeof(struct binder_buffer);
- }
- end_page_addr =
- (void *)PAGE_ALIGN((uintptr_t)buffer->data + buffer_size);
- if (end_page_addr > has_page_addr)
- end_page_addr = has_page_addr;
- if (binder_update_page_range(proc, 1,
- (void *)PAGE_ALIGN((uintptr_t)buffer->data), end_page_addr, NULL))
- return NULL;
-
- rb_erase(best_fit, &proc->free_buffers);
- buffer->free = 0;
- binder_insert_allocated_buffer(proc, buffer);
- if (buffer_size != size) {
- struct binder_buffer *new_buffer = (void *)buffer->data + size;
- list_add(&new_buffer->entry, &buffer->entry);
- new_buffer->free = 1;
- binder_insert_free_buffer(proc, new_buffer);
- }
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: binder_alloc_buf size %zd got "
- "%p\n", proc->pid, size, buffer);
- buffer->data_size = data_size;
- buffer->offsets_size = offsets_size;
- buffer->async_transaction = is_async;
- if (is_async) {
- proc->free_async_space -= size + sizeof(struct binder_buffer);
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC_ASYNC,
- "binder: %d: binder_alloc_buf size %zd "
- "async free %zd\n", proc->pid, size,
- proc->free_async_space);
- }
-
- return buffer;
-}
-
-static void *buffer_start_page(struct binder_buffer *buffer)
-{
- return (void *)((uintptr_t)buffer & PAGE_MASK);
-}
-
-static void *buffer_end_page(struct binder_buffer *buffer)
-{
- return (void *)(((uintptr_t)(buffer + 1) - 1) & PAGE_MASK);
-}
-
-static void binder_delete_free_buffer(struct binder_proc *proc,
- struct binder_buffer *buffer)
-{
- struct binder_buffer *prev, *next = NULL;
- int free_page_end = 1;
- int free_page_start = 1;
-
- BUG_ON(proc->buffers.next == &buffer->entry);
- prev = list_entry(buffer->entry.prev, struct binder_buffer, entry);
- BUG_ON(!prev->free);
- if (buffer_end_page(prev) == buffer_start_page(buffer)) {
- free_page_start = 0;
- if (buffer_end_page(prev) == buffer_end_page(buffer))
- free_page_end = 0;
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: merge free, buffer %p "
- "share page with %p\n", proc->pid, buffer, prev);
- }
-
- if (!list_is_last(&buffer->entry, &proc->buffers)) {
- next = list_entry(buffer->entry.next,
- struct binder_buffer, entry);
- if (buffer_start_page(next) == buffer_end_page(buffer)) {
- free_page_end = 0;
- if (buffer_start_page(next) ==
- buffer_start_page(buffer))
- free_page_start = 0;
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: merge free, buffer"
- " %p share page with %p\n", proc->pid,
- buffer, prev);
- }
- }
- list_del(&buffer->entry);
- if (free_page_start || free_page_end) {
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: merge free, buffer %p do "
- "not share page%s%s with with %p or %p\n",
- proc->pid, buffer, free_page_start ? "" : " end",
- free_page_end ? "" : " start", prev, next);
- binder_update_page_range(proc, 0, free_page_start ?
- buffer_start_page(buffer) : buffer_end_page(buffer),
- (free_page_end ? buffer_end_page(buffer) :
- buffer_start_page(buffer)) + PAGE_SIZE, NULL);
- }
-}
-
-static void binder_free_buf(struct binder_proc *proc,
- struct binder_buffer *buffer)
-{
- size_t size, buffer_size;
-
- buffer_size = binder_buffer_size(proc, buffer);
-
- size = ALIGN(buffer->data_size, sizeof(void *)) +
- ALIGN(buffer->offsets_size, sizeof(void *));
-
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder: %d: binder_free_buf %p size %zd buffer"
- "_size %zd\n", proc->pid, buffer, size, buffer_size);
-
- BUG_ON(buffer->free);
- BUG_ON(size > buffer_size);
- BUG_ON(buffer->transaction != NULL);
- BUG_ON((void *)buffer < proc->buffer);
- BUG_ON((void *)buffer > proc->buffer + proc->buffer_size);
-
- if (buffer->async_transaction) {
- proc->free_async_space += size + sizeof(struct binder_buffer);
-
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC_ASYNC,
- "binder: %d: binder_free_buf size %zd "
- "async free %zd\n", proc->pid, size,
- proc->free_async_space);
- }
-
- binder_update_page_range(proc, 0,
- (void *)PAGE_ALIGN((uintptr_t)buffer->data),
- (void *)(((uintptr_t)buffer->data + buffer_size) & PAGE_MASK),
- NULL);
- rb_erase(&buffer->rb_node, &proc->allocated_buffers);
- buffer->free = 1;
- if (!list_is_last(&buffer->entry, &proc->buffers)) {
- struct binder_buffer *next = list_entry(buffer->entry.next,
- struct binder_buffer, entry);
- if (next->free) {
- rb_erase(&next->rb_node, &proc->free_buffers);
- binder_delete_free_buffer(proc, next);
- }
- }
- if (proc->buffers.next != &buffer->entry) {
- struct binder_buffer *prev = list_entry(buffer->entry.prev,
- struct binder_buffer, entry);
- if (prev->free) {
- binder_delete_free_buffer(proc, buffer);
- rb_erase(&prev->rb_node, &proc->free_buffers);
- buffer = prev;
- }
- }
- binder_insert_free_buffer(proc, buffer);
-}
-
-static struct binder_node *binder_get_node(struct binder_proc *proc,
- void __user *ptr)
-{
- struct rb_node *n = proc->nodes.rb_node;
- struct binder_node *node;
-
- while (n) {
- node = rb_entry(n, struct binder_node, rb_node);
-
- if (ptr < node->ptr)
- n = n->rb_left;
- else if (ptr > node->ptr)
- n = n->rb_right;
- else
- return node;
- }
- return NULL;
-}
-
-static struct binder_node *binder_new_node(struct binder_proc *proc,
- void __user *ptr,
- void __user *cookie)
-{
- struct rb_node **p = &proc->nodes.rb_node;
- struct rb_node *parent = NULL;
- struct binder_node *node;
-
- while (*p) {
- parent = *p;
- node = rb_entry(parent, struct binder_node, rb_node);
-
- if (ptr < node->ptr)
- p = &(*p)->rb_left;
- else if (ptr > node->ptr)
- p = &(*p)->rb_right;
- else
- return NULL;
- }
-
- node = kzalloc(sizeof(*node), GFP_KERNEL);
- if (node == NULL)
- return NULL;
- binder_stats_created(BINDER_STAT_NODE);
- rb_link_node(&node->rb_node, parent, p);
- rb_insert_color(&node->rb_node, &proc->nodes);
- node->debug_id = ++binder_last_id;
- node->proc = proc;
- node->ptr = ptr;
- node->cookie = cookie;
- node->work.type = BINDER_WORK_NODE;
- INIT_LIST_HEAD(&node->work.entry);
- INIT_LIST_HEAD(&node->async_todo);
- binder_debug(BINDER_DEBUG_INTERNAL_REFS,
- "binder: %d:%d node %d u%p c%p created\n",
- proc->pid, current->pid, node->debug_id,
- node->ptr, node->cookie);
- return node;
-}
-
-static int binder_inc_node(struct binder_node *node, int strong, int internal,
- struct list_head *target_list)
-{
- if (strong) {
- if (internal) {
- if (target_list == NULL &&
- node->internal_strong_refs == 0 &&
- !(node == binder_context_mgr_node &&
- node->has_strong_ref)) {
- printk(KERN_ERR "binder: invalid inc strong "
- "node for %d\n", node->debug_id);
- return -EINVAL;
- }
- node->internal_strong_refs++;
- } else
- node->local_strong_refs++;
- if (!node->has_strong_ref && target_list) {
- list_del_init(&node->work.entry);
- list_add_tail(&node->work.entry, target_list);
- }
- } else {
- if (!internal)
- node->local_weak_refs++;
- if (!node->has_weak_ref && list_empty(&node->work.entry)) {
- if (target_list == NULL) {
- printk(KERN_ERR "binder: invalid inc weak node "
- "for %d\n", node->debug_id);
- return -EINVAL;
- }
- list_add_tail(&node->work.entry, target_list);
- }
- }
- return 0;
-}
-
-static int binder_dec_node(struct binder_node *node, int strong, int internal)
-{
- if (strong) {
- if (internal)
- node->internal_strong_refs--;
- else
- node->local_strong_refs--;
- if (node->local_strong_refs || node->internal_strong_refs)
- return 0;
- } else {
- if (!internal)
- node->local_weak_refs--;
- if (node->local_weak_refs || !hlist_empty(&node->refs))
- return 0;
- }
- if (node->proc && (node->has_strong_ref || node->has_weak_ref)) {
- if (list_empty(&node->work.entry)) {
- list_add_tail(&node->work.entry, &node->proc->todo);
- wake_up_interruptible(&node->proc->wait);
- }
- } else {
- if (hlist_empty(&node->refs) && !node->local_strong_refs &&
- !node->local_weak_refs) {
- list_del_init(&node->work.entry);
- if (node->proc) {
- rb_erase(&node->rb_node, &node->proc->nodes);
- binder_debug(BINDER_DEBUG_INTERNAL_REFS,
- "binder: refless node %d deleted\n",
- node->debug_id);
- } else {
- hlist_del(&node->dead_node);
- binder_debug(BINDER_DEBUG_INTERNAL_REFS,
- "binder: dead node %d deleted\n",
- node->debug_id);
- }
- kfree(node);
- binder_stats_deleted(BINDER_STAT_NODE);
- }
- }
-
- return 0;
-}
-
-
-static struct binder_ref *binder_get_ref(struct binder_proc *proc,
- uint32_t desc)
-{
- struct rb_node *n = proc->refs_by_desc.rb_node;
- struct binder_ref *ref;
-
- while (n) {
- ref = rb_entry(n, struct binder_ref, rb_node_desc);
-
- if (desc < ref->desc)
- n = n->rb_left;
- else if (desc > ref->desc)
- n = n->rb_right;
- else
- return ref;
- }
- return NULL;
-}
-
-static struct binder_ref *binder_get_ref_for_node(struct binder_proc *proc,
- struct binder_node *node)
-{
- struct rb_node *n;
- struct rb_node **p = &proc->refs_by_node.rb_node;
- struct rb_node *parent = NULL;
- struct binder_ref *ref, *new_ref;
-
- while (*p) {
- parent = *p;
- ref = rb_entry(parent, struct binder_ref, rb_node_node);
-
- if (node < ref->node)
- p = &(*p)->rb_left;
- else if (node > ref->node)
- p = &(*p)->rb_right;
- else
- return ref;
- }
- new_ref = kzalloc(sizeof(*ref), GFP_KERNEL);
- if (new_ref == NULL)
- return NULL;
- binder_stats_created(BINDER_STAT_REF);
- new_ref->debug_id = ++binder_last_id;
- new_ref->proc = proc;
- new_ref->node = node;
- rb_link_node(&new_ref->rb_node_node, parent, p);
- rb_insert_color(&new_ref->rb_node_node, &proc->refs_by_node);
-
- new_ref->desc = (node == binder_context_mgr_node) ? 0 : 1;
- for (n = rb_first(&proc->refs_by_desc); n != NULL; n = rb_next(n)) {
- ref = rb_entry(n, struct binder_ref, rb_node_desc);
- if (ref->desc > new_ref->desc)
- break;
- new_ref->desc = ref->desc + 1;
- }
-
- p = &proc->refs_by_desc.rb_node;
- while (*p) {
- parent = *p;
- ref = rb_entry(parent, struct binder_ref, rb_node_desc);
-
- if (new_ref->desc < ref->desc)
- p = &(*p)->rb_left;
- else if (new_ref->desc > ref->desc)
- p = &(*p)->rb_right;
- else
- BUG();
- }
- rb_link_node(&new_ref->rb_node_desc, parent, p);
- rb_insert_color(&new_ref->rb_node_desc, &proc->refs_by_desc);
- if (node) {
- hlist_add_head(&new_ref->node_entry, &node->refs);
-
- binder_debug(BINDER_DEBUG_INTERNAL_REFS,
- "binder: %d new ref %d desc %d for "
- "node %d\n", proc->pid, new_ref->debug_id,
- new_ref->desc, node->debug_id);
- } else {
- binder_debug(BINDER_DEBUG_INTERNAL_REFS,
- "binder: %d new ref %d desc %d for "
- "dead node\n", proc->pid, new_ref->debug_id,
- new_ref->desc);
- }
- return new_ref;
-}
-
-static void binder_delete_ref(struct binder_ref *ref)
-{
- binder_debug(BINDER_DEBUG_INTERNAL_REFS,
- "binder: %d delete ref %d desc %d for "
- "node %d\n", ref->proc->pid, ref->debug_id,
- ref->desc, ref->node->debug_id);
-
- rb_erase(&ref->rb_node_desc, &ref->proc->refs_by_desc);
- rb_erase(&ref->rb_node_node, &ref->proc->refs_by_node);
- if (ref->strong)
- binder_dec_node(ref->node, 1, 1);
- hlist_del(&ref->node_entry);
- binder_dec_node(ref->node, 0, 1);
- if (ref->death) {
- binder_debug(BINDER_DEBUG_DEAD_BINDER,
- "binder: %d delete ref %d desc %d "
- "has death notification\n", ref->proc->pid,
- ref->debug_id, ref->desc);
- list_del(&ref->death->work.entry);
- kfree(ref->death);
- binder_stats_deleted(BINDER_STAT_DEATH);
- }
- kfree(ref);
- binder_stats_deleted(BINDER_STAT_REF);
-}
-
-static int binder_inc_ref(struct binder_ref *ref, int strong,
- struct list_head *target_list)
-{
- int ret;
- if (strong) {
- if (ref->strong == 0) {
- ret = binder_inc_node(ref->node, 1, 1, target_list);
- if (ret)
- return ret;
- }
- ref->strong++;
- } else {
- if (ref->weak == 0) {
- ret = binder_inc_node(ref->node, 0, 1, target_list);
- if (ret)
- return ret;
- }
- ref->weak++;
- }
- return 0;
-}
-
-
-static int binder_dec_ref(struct binder_ref *ref, int strong)
-{
- if (strong) {
- if (ref->strong == 0) {
- binder_user_error("binder: %d invalid dec strong, "
- "ref %d desc %d s %d w %d\n",
- ref->proc->pid, ref->debug_id,
- ref->desc, ref->strong, ref->weak);
- return -EINVAL;
- }
- ref->strong--;
- if (ref->strong == 0) {
- int ret;
- ret = binder_dec_node(ref->node, strong, 1);
- if (ret)
- return ret;
- }
- } else {
- if (ref->weak == 0) {
- binder_user_error("binder: %d invalid dec weak, "
- "ref %d desc %d s %d w %d\n",
- ref->proc->pid, ref->debug_id,
- ref->desc, ref->strong, ref->weak);
- return -EINVAL;
- }
- ref->weak--;
- }
- if (ref->strong == 0 && ref->weak == 0)
- binder_delete_ref(ref);
- return 0;
-}
-
-static void binder_pop_transaction(struct binder_thread *target_thread,
- struct binder_transaction *t)
-{
- if (target_thread) {
- BUG_ON(target_thread->transaction_stack != t);
- BUG_ON(target_thread->transaction_stack->from != target_thread);
- target_thread->transaction_stack =
- target_thread->transaction_stack->from_parent;
- t->from = NULL;
- }
- t->need_reply = 0;
- if (t->buffer)
- t->buffer->transaction = NULL;
- kfree(t);
- binder_stats_deleted(BINDER_STAT_TRANSACTION);
-}
-
-static void binder_send_failed_reply(struct binder_transaction *t,
- uint32_t error_code)
-{
- struct binder_thread *target_thread;
- BUG_ON(t->flags & TF_ONE_WAY);
- while (1) {
- target_thread = t->from;
- if (target_thread) {
- if (target_thread->return_error != BR_OK &&
- target_thread->return_error2 == BR_OK) {
- target_thread->return_error2 =
- target_thread->return_error;
- target_thread->return_error = BR_OK;
- }
- if (target_thread->return_error == BR_OK) {
- binder_debug(BINDER_DEBUG_FAILED_TRANSACTION,
- "binder: send failed reply for "
- "transaction %d to %d:%d\n",
- t->debug_id, target_thread->proc->pid,
- target_thread->pid);
-
- binder_pop_transaction(target_thread, t);
- target_thread->return_error = error_code;
- wake_up_interruptible(&target_thread->wait);
- } else {
- printk(KERN_ERR "binder: reply failed, target "
- "thread, %d:%d, has error code %d "
- "already\n", target_thread->proc->pid,
- target_thread->pid,
- target_thread->return_error);
- }
- return;
- } else {
- struct binder_transaction *next = t->from_parent;
-
- binder_debug(BINDER_DEBUG_FAILED_TRANSACTION,
- "binder: send failed reply "
- "for transaction %d, target dead\n",
- t->debug_id);
-
- binder_pop_transaction(target_thread, t);
- if (next == NULL) {
- binder_debug(BINDER_DEBUG_DEAD_BINDER,
- "binder: reply failed,"
- " no target thread at root\n");
- return;
- }
- t = next;
- binder_debug(BINDER_DEBUG_DEAD_BINDER,
- "binder: reply failed, no target "
- "thread -- retry %d\n", t->debug_id);
- }
- }
-}
-
-static void binder_transaction_buffer_release(struct binder_proc *proc,
- struct binder_buffer *buffer,
- size_t *failed_at)
-{
- size_t *offp, *off_end;
- int debug_id = buffer->debug_id;
-
- binder_debug(BINDER_DEBUG_TRANSACTION,
- "binder: %d buffer release %d, size %zd-%zd, failed at %p\n",
- proc->pid, buffer->debug_id,
- buffer->data_size, buffer->offsets_size, failed_at);
-
- if (buffer->target_node)
- binder_dec_node(buffer->target_node, 1, 0);
-
- offp = (size_t *)(buffer->data + ALIGN(buffer->data_size, sizeof(void *)));
- if (failed_at)
- off_end = failed_at;
- else
- 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(void *))) {
- printk(KERN_ERR "binder: transaction release %d bad"
- "offset %zd, size %zd\n", debug_id,
- *offp, buffer->data_size);
- continue;
- }
- fp = (struct flat_binder_object *)(buffer->data + *offp);
- switch (fp->type) {
- case BINDER_TYPE_BINDER:
- case BINDER_TYPE_WEAK_BINDER: {
- struct binder_node *node = binder_get_node(proc, fp->binder);
- if (node == NULL) {
- printk(KERN_ERR "binder: transaction release %d"
- " bad node %p\n", debug_id, fp->binder);
- break;
- }
- binder_debug(BINDER_DEBUG_TRANSACTION,
- " node %d u%p\n",
- node->debug_id, node->ptr);
- binder_dec_node(node, fp->type == BINDER_TYPE_BINDER, 0);
- } break;
- case BINDER_TYPE_HANDLE:
- case BINDER_TYPE_WEAK_HANDLE: {
- struct binder_ref *ref = binder_get_ref(proc, fp->handle);
- if (ref == NULL) {
- printk(KERN_ERR "binder: transaction release %d"
- " bad handle %ld\n", debug_id,
- fp->handle);
- break;
- }
- binder_debug(BINDER_DEBUG_TRANSACTION,
- " ref %d desc %d (node %d)\n",
- ref->debug_id, ref->desc, ref->node->debug_id);
- binder_dec_ref(ref, fp->type == BINDER_TYPE_HANDLE);
- } break;
-
- case BINDER_TYPE_FD:
- binder_debug(BINDER_DEBUG_TRANSACTION,
- " fd %ld\n", fp->handle);
- if (failed_at)
- task_close_fd(proc, fp->handle);
- break;
-
- default:
- printk(KERN_ERR "binder: transaction release %d bad "
- "object type %lx\n", debug_id, fp->type);
- break;
- }
- }
-}
-
-static void binder_transaction(struct binder_proc *proc,
- struct binder_thread *thread,
- struct binder_transaction_data *tr, int reply)
-{
- struct binder_transaction *t;
- struct binder_work *tcomplete;
- size_t *offp, *off_end;
- struct binder_proc *target_proc;
- struct binder_thread *target_thread = NULL;
- struct binder_node *target_node = NULL;
- struct list_head *target_list;
- wait_queue_head_t *target_wait;
- struct binder_transaction *in_reply_to = NULL;
- struct binder_transaction_log_entry *e;
- uint32_t return_error;
-
- e = binder_transaction_log_add(&binder_transaction_log);
- e->call_type = reply ? 2 : !!(tr->flags & TF_ONE_WAY);
- e->from_proc = proc->pid;
- e->from_thread = thread->pid;
- e->target_handle = tr->target.handle;
- e->data_size = tr->data_size;
- e->offsets_size = tr->offsets_size;
-
- if (reply) {
- in_reply_to = thread->transaction_stack;
- if (in_reply_to == NULL) {
- binder_user_error("binder: %d:%d got reply transaction "
- "with no transaction stack\n",
- proc->pid, thread->pid);
- return_error = BR_FAILED_REPLY;
- goto err_empty_call_stack;
- }
- binder_set_nice(in_reply_to->saved_priority);
- if (in_reply_to->to_thread != thread) {
- binder_user_error("binder: %d:%d got reply transaction "
- "with bad transaction stack,"
- " transaction %d has target %d:%d\n",
- proc->pid, thread->pid, in_reply_to->debug_id,
- in_reply_to->to_proc ?
- in_reply_to->to_proc->pid : 0,
- in_reply_to->to_thread ?
- in_reply_to->to_thread->pid : 0);
- return_error = BR_FAILED_REPLY;
- in_reply_to = NULL;
- goto err_bad_call_stack;
- }
- thread->transaction_stack = in_reply_to->to_parent;
- target_thread = in_reply_to->from;
- if (target_thread == NULL) {
- return_error = BR_DEAD_REPLY;
- goto err_dead_binder;
- }
- if (target_thread->transaction_stack != in_reply_to) {
- binder_user_error("binder: %d:%d got reply transaction "
- "with bad target transaction stack %d, "
- "expected %d\n",
- proc->pid, thread->pid,
- target_thread->transaction_stack ?
- target_thread->transaction_stack->debug_id : 0,
- in_reply_to->debug_id);
- return_error = BR_FAILED_REPLY;
- in_reply_to = NULL;
- target_thread = NULL;
- goto err_dead_binder;
- }
- target_proc = target_thread->proc;
- } else {
- if (tr->target.handle) {
- struct binder_ref *ref;
- ref = binder_get_ref(proc, tr->target.handle);
- if (ref == NULL) {
- binder_user_error("binder: %d:%d got "
- "transaction to invalid handle\n",
- proc->pid, thread->pid);
- return_error = BR_FAILED_REPLY;
- goto err_invalid_target_handle;
- }
- target_node = ref->node;
- } else {
- target_node = binder_context_mgr_node;
- if (target_node == NULL) {
- return_error = BR_DEAD_REPLY;
- goto err_no_context_mgr_node;
- }
- }
- e->to_node = target_node->debug_id;
- target_proc = target_node->proc;
- if (target_proc == NULL) {
- return_error = BR_DEAD_REPLY;
- goto err_dead_binder;
- }
- if (!(tr->flags & TF_ONE_WAY) && thread->transaction_stack) {
- struct binder_transaction *tmp;
- tmp = thread->transaction_stack;
- if (tmp->to_thread != thread) {
- binder_user_error("binder: %d:%d got new "
- "transaction with bad transaction stack"
- ", transaction %d has target %d:%d\n",
- proc->pid, thread->pid, tmp->debug_id,
- tmp->to_proc ? tmp->to_proc->pid : 0,
- tmp->to_thread ?
- tmp->to_thread->pid : 0);
- return_error = BR_FAILED_REPLY;
- goto err_bad_call_stack;
- }
- while (tmp) {
- if (tmp->from && tmp->from->proc == target_proc)
- target_thread = tmp->from;
- tmp = tmp->from_parent;
- }
- }
- }
- if (target_thread) {
- e->to_thread = target_thread->pid;
- target_list = &target_thread->todo;
- target_wait = &target_thread->wait;
- } else {
- target_list = &target_proc->todo;
- target_wait = &target_proc->wait;
- }
- e->to_proc = target_proc->pid;
-
- /* TODO: reuse incoming transaction for reply */
- t = kzalloc(sizeof(*t), GFP_KERNEL);
- if (t == NULL) {
- return_error = BR_FAILED_REPLY;
- goto err_alloc_t_failed;
- }
- binder_stats_created(BINDER_STAT_TRANSACTION);
-
- tcomplete = kzalloc(sizeof(*tcomplete), GFP_KERNEL);
- if (tcomplete == NULL) {
- return_error = BR_FAILED_REPLY;
- goto err_alloc_tcomplete_failed;
- }
- binder_stats_created(BINDER_STAT_TRANSACTION_COMPLETE);
-
- t->debug_id = ++binder_last_id;
- e->debug_id = t->debug_id;
-
- if (reply)
- binder_debug(BINDER_DEBUG_TRANSACTION,
- "binder: %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,
- "binder: %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,
- tr->data_size, tr->offsets_size);
-
- if (!reply && !(tr->flags & TF_ONE_WAY))
- t->from = thread;
- else
- t->from = NULL;
- t->sender_euid = proc->tsk->cred->euid;
- t->to_proc = target_proc;
- t->to_thread = target_thread;
- t->code = tr->code;
- t->flags = tr->flags;
- t->priority = task_nice(current);
- t->buffer = binder_alloc_buf(target_proc, tr->data_size,
- tr->offsets_size, !reply && (t->flags & TF_ONE_WAY));
- if (t->buffer == NULL) {
- return_error = BR_FAILED_REPLY;
- goto err_binder_alloc_buf_failed;
- }
- t->buffer->allow_user_free = 0;
- t->buffer->debug_id = t->debug_id;
- t->buffer->transaction = t;
- t->buffer->target_node = target_node;
- if (target_node)
- binder_inc_node(target_node, 1, 0, NULL);
-
- offp = (size_t *)(t->buffer->data + ALIGN(tr->data_size, sizeof(void *)));
-
- if (copy_from_user(t->buffer->data, tr->data.ptr.buffer, tr->data_size)) {
- binder_user_error("binder: %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, tr->data.ptr.offsets, tr->offsets_size)) {
- binder_user_error("binder: %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(size_t))) {
- binder_user_error("binder: %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 = (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(void *))) {
- binder_user_error("binder: %d:%d got transaction with "
- "invalid offset, %zd\n",
- proc->pid, thread->pid, *offp);
- return_error = BR_FAILED_REPLY;
- goto err_bad_offset;
- }
- fp = (struct flat_binder_object *)(t->buffer->data + *offp);
- switch (fp->type) {
- case BINDER_TYPE_BINDER:
- case BINDER_TYPE_WEAK_BINDER: {
- struct binder_ref *ref;
- struct binder_node *node = binder_get_node(proc, fp->binder);
- if (node == NULL) {
- node = binder_new_node(proc, fp->binder, fp->cookie);
- if (node == NULL) {
- return_error = BR_FAILED_REPLY;
- goto err_binder_new_node_failed;
- }
- node->min_priority = fp->flags & FLAT_BINDER_FLAG_PRIORITY_MASK;
- node->accept_fds = !!(fp->flags & FLAT_BINDER_FLAG_ACCEPTS_FDS);
- }
- if (fp->cookie != node->cookie) {
- binder_user_error("binder: %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);
- goto err_binder_get_ref_for_node_failed;
- }
- ref = binder_get_ref_for_node(target_proc, node);
- if (ref == NULL) {
- return_error = BR_FAILED_REPLY;
- goto err_binder_get_ref_for_node_failed;
- }
- if (fp->type == BINDER_TYPE_BINDER)
- fp->type = BINDER_TYPE_HANDLE;
- else
- fp->type = BINDER_TYPE_WEAK_HANDLE;
- fp->handle = ref->desc;
- binder_inc_ref(ref, fp->type == BINDER_TYPE_HANDLE,
- &thread->todo);
-
- binder_debug(BINDER_DEBUG_TRANSACTION,
- " node %d u%p -> ref %d desc %d\n",
- node->debug_id, node->ptr, ref->debug_id,
- ref->desc);
- } break;
- case BINDER_TYPE_HANDLE:
- case BINDER_TYPE_WEAK_HANDLE: {
- struct binder_ref *ref = binder_get_ref(proc, fp->handle);
- if (ref == NULL) {
- binder_user_error("binder: %d:%d got "
- "transaction with invalid "
- "handle, %ld\n", proc->pid,
- thread->pid, fp->handle);
- return_error = BR_FAILED_REPLY;
- goto err_binder_get_ref_failed;
- }
- if (ref->node->proc == target_proc) {
- if (fp->type == BINDER_TYPE_HANDLE)
- fp->type = BINDER_TYPE_BINDER;
- else
- fp->type = BINDER_TYPE_WEAK_BINDER;
- fp->binder = ref->node->ptr;
- fp->cookie = ref->node->cookie;
- binder_inc_node(ref->node, fp->type == BINDER_TYPE_BINDER, 0, NULL);
- binder_debug(BINDER_DEBUG_TRANSACTION,
- " ref %d desc %d -> node %d u%p\n",
- ref->debug_id, ref->desc, ref->node->debug_id,
- ref->node->ptr);
- } else {
- struct binder_ref *new_ref;
- new_ref = binder_get_ref_for_node(target_proc, ref->node);
- if (new_ref == NULL) {
- return_error = BR_FAILED_REPLY;
- goto err_binder_get_ref_for_node_failed;
- }
- fp->handle = new_ref->desc;
- binder_inc_ref(new_ref, fp->type == BINDER_TYPE_HANDLE, NULL);
- binder_debug(BINDER_DEBUG_TRANSACTION,
- " ref %d desc %d -> ref %d desc %d (node %d)\n",
- ref->debug_id, ref->desc, new_ref->debug_id,
- new_ref->desc, ref->node->debug_id);
- }
- } break;
-
- case BINDER_TYPE_FD: {
- int target_fd;
- struct file *file;
-
- if (reply) {
- if (!(in_reply_to->flags & TF_ACCEPT_FDS)) {
- binder_user_error("binder: %d:%d got reply with fd, %ld, but target does not allow fds\n",
- proc->pid, thread->pid, fp->handle);
- return_error = BR_FAILED_REPLY;
- goto err_fd_not_allowed;
- }
- } else if (!target_node->accept_fds) {
- binder_user_error("binder: %d:%d got transaction with fd, %ld, but target does not allow fds\n",
- proc->pid, thread->pid, fp->handle);
- return_error = BR_FAILED_REPLY;
- goto err_fd_not_allowed;
- }
-
- file = fget(fp->handle);
- if (file == NULL) {
- binder_user_error("binder: %d:%d got transaction with invalid fd, %ld\n",
- proc->pid, thread->pid, fp->handle);
- return_error = BR_FAILED_REPLY;
- goto err_fget_failed;
- }
- target_fd = task_get_unused_fd_flags(target_proc, O_CLOEXEC);
- if (target_fd < 0) {
- fput(file);
- return_error = BR_FAILED_REPLY;
- goto err_get_unused_fd_failed;
- }
- task_fd_install(target_proc, target_fd, file);
- binder_debug(BINDER_DEBUG_TRANSACTION,
- " fd %ld -> %d\n", fp->handle, target_fd);
- /* TODO: fput? */
- fp->handle = target_fd;
- } break;
-
- default:
- binder_user_error("binder: %d:%d got transactio"
- "n with invalid object type, %lx\n",
- proc->pid, thread->pid, fp->type);
- return_error = BR_FAILED_REPLY;
- goto err_bad_object_type;
- }
- }
- if (reply) {
- BUG_ON(t->buffer->async_transaction != 0);
- binder_pop_transaction(target_thread, in_reply_to);
- } else if (!(t->flags & TF_ONE_WAY)) {
- BUG_ON(t->buffer->async_transaction != 0);
- t->need_reply = 1;
- t->from_parent = thread->transaction_stack;
- thread->transaction_stack = t;
- } else {
- BUG_ON(target_node == NULL);
- BUG_ON(t->buffer->async_transaction != 1);
- if (target_node->has_async_transaction) {
- target_list = &target_node->async_todo;
- target_wait = NULL;
- } else
- target_node->has_async_transaction = 1;
- }
- t->work.type = BINDER_WORK_TRANSACTION;
- list_add_tail(&t->work.entry, target_list);
- tcomplete->type = BINDER_WORK_TRANSACTION_COMPLETE;
- list_add_tail(&tcomplete->entry, &thread->todo);
- if (target_wait)
- wake_up_interruptible(target_wait);
- return;
-
-err_get_unused_fd_failed:
-err_fget_failed:
-err_fd_not_allowed:
-err_binder_get_ref_for_node_failed:
-err_binder_get_ref_failed:
-err_binder_new_node_failed:
-err_bad_object_type:
-err_bad_offset:
-err_copy_data_failed:
- binder_transaction_buffer_release(target_proc, t->buffer, offp);
- t->buffer->transaction = NULL;
- binder_free_buf(target_proc, t->buffer);
-err_binder_alloc_buf_failed:
- kfree(tcomplete);
- binder_stats_deleted(BINDER_STAT_TRANSACTION_COMPLETE);
-err_alloc_tcomplete_failed:
- kfree(t);
- binder_stats_deleted(BINDER_STAT_TRANSACTION);
-err_alloc_t_failed:
-err_bad_call_stack:
-err_empty_call_stack:
-err_dead_binder:
-err_invalid_target_handle:
-err_no_context_mgr_node:
- binder_debug(BINDER_DEBUG_FAILED_TRANSACTION,
- "binder: %d:%d transaction failed %d, size %zd-%zd\n",
- proc->pid, thread->pid, return_error,
- tr->data_size, tr->offsets_size);
-
- {
- struct binder_transaction_log_entry *fe;
- fe = binder_transaction_log_add(&binder_transaction_log_failed);
- *fe = *e;
- }
-
- BUG_ON(thread->return_error != BR_OK);
- if (in_reply_to) {
- thread->return_error = BR_TRANSACTION_COMPLETE;
- binder_send_failed_reply(in_reply_to, return_error);
- } else
- thread->return_error = return_error;
-}
-
-int binder_thread_write(struct binder_proc *proc, struct binder_thread *thread,
- void __user *buffer, int size, signed long *consumed)
-{
- uint32_t cmd;
- void __user *ptr = buffer + *consumed;
- void __user *end = buffer + size;
-
- while (ptr < end && thread->return_error == BR_OK) {
- if (get_user(cmd, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
- if (_IOC_NR(cmd) < ARRAY_SIZE(binder_stats.bc)) {
- binder_stats.bc[_IOC_NR(cmd)]++;
- proc->stats.bc[_IOC_NR(cmd)]++;
- thread->stats.bc[_IOC_NR(cmd)]++;
- }
- 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;
-
- if (get_user(target, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
- if (target == 0 && binder_context_mgr_node &&
- (cmd == BC_INCREFS || cmd == BC_ACQUIRE)) {
- ref = binder_get_ref_for_node(proc,
- binder_context_mgr_node);
- if (ref->desc != target) {
- binder_user_error("binder: %d:"
- "%d tried to acquire "
- "reference to desc 0, "
- "got %d instead\n",
- proc->pid, thread->pid,
- ref->desc);
- }
- } else
- ref = binder_get_ref(proc, target);
- if (ref == NULL) {
- binder_user_error("binder: %d:%d refcou"
- "nt change on invalid ref %d\n",
- proc->pid, thread->pid, target);
- break;
- }
- switch (cmd) {
- case BC_INCREFS:
- debug_string = "IncRefs";
- binder_inc_ref(ref, 0, NULL);
- break;
- case BC_ACQUIRE:
- debug_string = "Acquire";
- binder_inc_ref(ref, 1, NULL);
- break;
- case BC_RELEASE:
- debug_string = "Release";
- binder_dec_ref(ref, 1);
- break;
- case BC_DECREFS:
- default:
- debug_string = "DecRefs";
- binder_dec_ref(ref, 0);
- break;
- }
- binder_debug(BINDER_DEBUG_USER_REFS,
- "binder: %d:%d %s ref %d desc %d s %d w %d for node %d\n",
- proc->pid, thread->pid, debug_string, ref->debug_id,
- ref->desc, ref->strong, ref->weak, ref->node->debug_id);
- break;
- }
- case BC_INCREFS_DONE:
- case BC_ACQUIRE_DONE: {
- void __user *node_ptr;
- void *cookie;
- struct binder_node *node;
-
- if (get_user(node_ptr, (void * __user *)ptr))
- return -EFAULT;
- ptr += sizeof(void *);
- if (get_user(cookie, (void * __user *)ptr))
- return -EFAULT;
- ptr += sizeof(void *);
- node = binder_get_node(proc, node_ptr);
- if (node == NULL) {
- binder_user_error("binder: %d:%d "
- "%s u%p no match\n",
- proc->pid, thread->pid,
- cmd == BC_INCREFS_DONE ?
- "BC_INCREFS_DONE" :
- "BC_ACQUIRE_DONE",
- node_ptr);
- break;
- }
- if (cookie != node->cookie) {
- binder_user_error("binder: %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",
- node_ptr, node->debug_id,
- cookie, node->cookie);
- break;
- }
- if (cmd == BC_ACQUIRE_DONE) {
- if (node->pending_strong_ref == 0) {
- binder_user_error("binder: %d:%d "
- "BC_ACQUIRE_DONE node %d has "
- "no pending acquire request\n",
- proc->pid, thread->pid,
- node->debug_id);
- break;
- }
- node->pending_strong_ref = 0;
- } else {
- if (node->pending_weak_ref == 0) {
- binder_user_error("binder: %d:%d "
- "BC_INCREFS_DONE node %d has "
- "no pending increfs request\n",
- proc->pid, thread->pid,
- node->debug_id);
- break;
- }
- node->pending_weak_ref = 0;
- }
- binder_dec_node(node, cmd == BC_ACQUIRE_DONE, 0);
- binder_debug(BINDER_DEBUG_USER_REFS,
- "binder: %d:%d %s node %d ls %d lw %d\n",
- proc->pid, thread->pid,
- cmd == BC_INCREFS_DONE ? "BC_INCREFS_DONE" : "BC_ACQUIRE_DONE",
- node->debug_id, node->local_strong_refs, node->local_weak_refs);
- break;
- }
- case BC_ATTEMPT_ACQUIRE:
- printk(KERN_ERR "binder: BC_ATTEMPT_ACQUIRE not supported\n");
- return -EINVAL;
- case BC_ACQUIRE_RESULT:
- printk(KERN_ERR "binder: BC_ACQUIRE_RESULT not supported\n");
- return -EINVAL;
-
- case BC_FREE_BUFFER: {
- void __user *data_ptr;
- struct binder_buffer *buffer;
-
- if (get_user(data_ptr, (void * __user *)ptr))
- return -EFAULT;
- ptr += sizeof(void *);
-
- buffer = binder_buffer_lookup(proc, data_ptr);
- if (buffer == NULL) {
- binder_user_error("binder: %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("binder: %d:%d "
- "BC_FREE_BUFFER u%p matched "
- "unreturned buffer\n",
- proc->pid, thread->pid, data_ptr);
- break;
- }
- binder_debug(BINDER_DEBUG_FREE_BUFFER,
- "binder: %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");
-
- if (buffer->transaction) {
- buffer->transaction->buffer = NULL;
- buffer->transaction = NULL;
- }
- if (buffer->async_transaction && buffer->target_node) {
- BUG_ON(!buffer->target_node->has_async_transaction);
- if (list_empty(&buffer->target_node->async_todo))
- buffer->target_node->has_async_transaction = 0;
- else
- list_move_tail(buffer->target_node->async_todo.next, &thread->todo);
- }
- binder_transaction_buffer_release(proc, buffer, NULL);
- binder_free_buf(proc, buffer);
- break;
- }
-
- case BC_TRANSACTION:
- case BC_REPLY: {
- struct binder_transaction_data tr;
-
- if (copy_from_user(&tr, ptr, sizeof(tr)))
- return -EFAULT;
- ptr += sizeof(tr);
- binder_transaction(proc, thread, &tr, cmd == BC_REPLY);
- break;
- }
-
- case BC_REGISTER_LOOPER:
- binder_debug(BINDER_DEBUG_THREADS,
- "binder: %d:%d BC_REGISTER_LOOPER\n",
- proc->pid, thread->pid);
- if (thread->looper & BINDER_LOOPER_STATE_ENTERED) {
- thread->looper |= BINDER_LOOPER_STATE_INVALID;
- binder_user_error("binder: %d:%d ERROR:"
- " BC_REGISTER_LOOPER called "
- "after BC_ENTER_LOOPER\n",
- proc->pid, thread->pid);
- } else if (proc->requested_threads == 0) {
- thread->looper |= BINDER_LOOPER_STATE_INVALID;
- binder_user_error("binder: %d:%d ERROR:"
- " BC_REGISTER_LOOPER called "
- "without request\n",
- proc->pid, thread->pid);
- } else {
- proc->requested_threads--;
- proc->requested_threads_started++;
- }
- thread->looper |= BINDER_LOOPER_STATE_REGISTERED;
- break;
- case BC_ENTER_LOOPER:
- binder_debug(BINDER_DEBUG_THREADS,
- "binder: %d:%d BC_ENTER_LOOPER\n",
- proc->pid, thread->pid);
- if (thread->looper & BINDER_LOOPER_STATE_REGISTERED) {
- thread->looper |= BINDER_LOOPER_STATE_INVALID;
- binder_user_error("binder: %d:%d ERROR:"
- " BC_ENTER_LOOPER called after "
- "BC_REGISTER_LOOPER\n",
- proc->pid, thread->pid);
- }
- thread->looper |= BINDER_LOOPER_STATE_ENTERED;
- break;
- case BC_EXIT_LOOPER:
- binder_debug(BINDER_DEBUG_THREADS,
- "binder: %d:%d BC_EXIT_LOOPER\n",
- proc->pid, thread->pid);
- thread->looper |= BINDER_LOOPER_STATE_EXITED;
- break;
-
- case BC_REQUEST_DEATH_NOTIFICATION:
- case BC_CLEAR_DEATH_NOTIFICATION: {
- uint32_t target;
- 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, (void __user * __user *)ptr))
- return -EFAULT;
- ptr += sizeof(void *);
- ref = binder_get_ref(proc, target);
- if (ref == NULL) {
- binder_user_error("binder: %d:%d %s "
- "invalid ref %d\n",
- proc->pid, thread->pid,
- cmd == BC_REQUEST_DEATH_NOTIFICATION ?
- "BC_REQUEST_DEATH_NOTIFICATION" :
- "BC_CLEAR_DEATH_NOTIFICATION",
- target);
- break;
- }
-
- binder_debug(BINDER_DEBUG_DEATH_NOTIFICATION,
- "binder: %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" :
- "BC_CLEAR_DEATH_NOTIFICATION",
- cookie, ref->debug_id, ref->desc,
- ref->strong, ref->weak, ref->node->debug_id);
-
- if (cmd == BC_REQUEST_DEATH_NOTIFICATION) {
- if (ref->death) {
- binder_user_error("binder: %d:%"
- "d BC_REQUEST_DEATH_NOTI"
- "FICATION death notific"
- "ation already set\n",
- proc->pid, thread->pid);
- break;
- }
- death = kzalloc(sizeof(*death), GFP_KERNEL);
- if (death == NULL) {
- thread->return_error = BR_ERROR;
- binder_debug(BINDER_DEBUG_FAILED_TRANSACTION,
- "binder: %d:%d "
- "BC_REQUEST_DEATH_NOTIFICATION failed\n",
- proc->pid, thread->pid);
- break;
- }
- binder_stats_created(BINDER_STAT_DEATH);
- INIT_LIST_HEAD(&death->work.entry);
- death->cookie = cookie;
- ref->death = death;
- if (ref->node->proc == NULL) {
- ref->death->work.type = BINDER_WORK_DEAD_BINDER;
- if (thread->looper & (BINDER_LOOPER_STATE_REGISTERED | BINDER_LOOPER_STATE_ENTERED)) {
- list_add_tail(&ref->death->work.entry, &thread->todo);
- } else {
- list_add_tail(&ref->death->work.entry, &proc->todo);
- wake_up_interruptible(&proc->wait);
- }
- }
- } else {
- if (ref->death == NULL) {
- binder_user_error("binder: %d:%"
- "d BC_CLEAR_DEATH_NOTIFI"
- "CATION death notificat"
- "ion not active\n",
- proc->pid, thread->pid);
- break;
- }
- death = ref->death;
- if (death->cookie != cookie) {
- binder_user_error("binder: %d:%"
- "d BC_CLEAR_DEATH_NOTIFI"
- "CATION death notificat"
- "ion cookie mismatch "
- "%p != %p\n",
- proc->pid, thread->pid,
- death->cookie, cookie);
- break;
- }
- ref->death = NULL;
- if (list_empty(&death->work.entry)) {
- death->work.type = BINDER_WORK_CLEAR_DEATH_NOTIFICATION;
- if (thread->looper & (BINDER_LOOPER_STATE_REGISTERED | BINDER_LOOPER_STATE_ENTERED)) {
- list_add_tail(&death->work.entry, &thread->todo);
- } else {
- list_add_tail(&death->work.entry, &proc->todo);
- wake_up_interruptible(&proc->wait);
- }
- } else {
- BUG_ON(death->work.type != BINDER_WORK_DEAD_BINDER);
- death->work.type = BINDER_WORK_DEAD_BINDER_AND_CLEAR;
- }
- }
- } break;
- case BC_DEAD_BINDER_DONE: {
- struct binder_work *w;
- void __user *cookie;
- struct binder_ref_death *death = NULL;
- if (get_user(cookie, (void __user * __user *)ptr))
- return -EFAULT;
-
- 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) {
- death = tmp_death;
- break;
- }
- }
- binder_debug(BINDER_DEBUG_DEAD_BINDER,
- "binder: %d:%d BC_DEAD_BINDER_DONE %p found %p\n",
- proc->pid, thread->pid, cookie, death);
- if (death == NULL) {
- binder_user_error("binder: %d:%d BC_DEAD"
- "_BINDER_DONE %p not found\n",
- proc->pid, thread->pid, cookie);
- break;
- }
-
- list_del_init(&death->work.entry);
- if (death->work.type == BINDER_WORK_DEAD_BINDER_AND_CLEAR) {
- death->work.type = BINDER_WORK_CLEAR_DEATH_NOTIFICATION;
- if (thread->looper & (BINDER_LOOPER_STATE_REGISTERED | BINDER_LOOPER_STATE_ENTERED)) {
- list_add_tail(&death->work.entry, &thread->todo);
- } else {
- list_add_tail(&death->work.entry, &proc->todo);
- wake_up_interruptible(&proc->wait);
- }
- }
- } break;
-
- default:
- printk(KERN_ERR "binder: %d:%d unknown command %d\n",
- proc->pid, thread->pid, cmd);
- return -EINVAL;
- }
- *consumed = ptr - buffer;
- }
- return 0;
-}
-
-void binder_stat_br(struct binder_proc *proc, struct binder_thread *thread,
- uint32_t cmd)
-{
- if (_IOC_NR(cmd) < ARRAY_SIZE(binder_stats.br)) {
- binder_stats.br[_IOC_NR(cmd)]++;
- proc->stats.br[_IOC_NR(cmd)]++;
- thread->stats.br[_IOC_NR(cmd)]++;
- }
-}
-
-static int binder_has_proc_work(struct binder_proc *proc,
- struct binder_thread *thread)
-{
- return !list_empty(&proc->todo) ||
- (thread->looper & BINDER_LOOPER_STATE_NEED_RETURN);
-}
-
-static int binder_has_thread_work(struct binder_thread *thread)
-{
- return !list_empty(&thread->todo) || thread->return_error != BR_OK ||
- (thread->looper & BINDER_LOOPER_STATE_NEED_RETURN);
-}
-
-static int binder_thread_read(struct binder_proc *proc,
- struct binder_thread *thread,
- void __user *buffer, int size,
- signed long *consumed, int non_block)
-{
- void __user *ptr = buffer + *consumed;
- void __user *end = buffer + size;
-
- int ret = 0;
- int wait_for_proc_work;
-
- if (*consumed == 0) {
- if (put_user(BR_NOOP, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
- }
-
-retry:
- wait_for_proc_work = thread->transaction_stack == NULL &&
- list_empty(&thread->todo);
-
- if (thread->return_error != BR_OK && ptr < end) {
- if (thread->return_error2 != BR_OK) {
- if (put_user(thread->return_error2, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
- if (ptr == end)
- goto done;
- thread->return_error2 = BR_OK;
- }
- if (put_user(thread->return_error, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
- thread->return_error = BR_OK;
- goto done;
- }
-
-
- thread->looper |= BINDER_LOOPER_STATE_WAITING;
- if (wait_for_proc_work)
- proc->ready_threads++;
- mutex_unlock(&binder_lock);
- if (wait_for_proc_work) {
- if (!(thread->looper & (BINDER_LOOPER_STATE_REGISTERED |
- BINDER_LOOPER_STATE_ENTERED))) {
- binder_user_error("binder: %d:%d ERROR: Thread waiting "
- "for process work before calling BC_REGISTER_"
- "LOOPER or BC_ENTER_LOOPER (state %x)\n",
- proc->pid, thread->pid, thread->looper);
- wait_event_interruptible(binder_user_error_wait,
- binder_stop_on_user_error < 2);
- }
- binder_set_nice(proc->default_priority);
- if (non_block) {
- if (!binder_has_proc_work(proc, thread))
- ret = -EAGAIN;
- } else
- ret = wait_event_interruptible_exclusive(proc->wait, binder_has_proc_work(proc, thread));
- } else {
- if (non_block) {
- if (!binder_has_thread_work(thread))
- ret = -EAGAIN;
- } else
- ret = wait_event_interruptible(thread->wait, binder_has_thread_work(thread));
- }
- mutex_lock(&binder_lock);
- if (wait_for_proc_work)
- proc->ready_threads--;
- thread->looper &= ~BINDER_LOOPER_STATE_WAITING;
-
- if (ret)
- return ret;
-
- while (1) {
- uint32_t cmd;
- struct binder_transaction_data tr;
- struct binder_work *w;
- struct binder_transaction *t = NULL;
-
- if (!list_empty(&thread->todo))
- w = list_first_entry(&thread->todo, struct binder_work, entry);
- else if (!list_empty(&proc->todo) && wait_for_proc_work)
- w = list_first_entry(&proc->todo, struct binder_work, entry);
- else {
- if (ptr - buffer == 4 && !(thread->looper & BINDER_LOOPER_STATE_NEED_RETURN)) /* no data added */
- goto retry;
- break;
- }
-
- if (end - ptr < sizeof(tr) + 4)
- break;
-
- switch (w->type) {
- case BINDER_WORK_TRANSACTION: {
- t = container_of(w, struct binder_transaction, work);
- } break;
- case BINDER_WORK_TRANSACTION_COMPLETE: {
- cmd = BR_TRANSACTION_COMPLETE;
- if (put_user(cmd, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
-
- binder_stat_br(proc, thread, cmd);
- binder_debug(BINDER_DEBUG_TRANSACTION_COMPLETE,
- "binder: %d:%d BR_TRANSACTION_COMPLETE\n",
- proc->pid, thread->pid);
-
- list_del(&w->entry);
- kfree(w);
- binder_stats_deleted(BINDER_STAT_TRANSACTION_COMPLETE);
- } break;
- case BINDER_WORK_NODE: {
- struct binder_node *node = container_of(w, struct binder_node, work);
- uint32_t cmd = BR_NOOP;
- const char *cmd_name;
- int strong = node->internal_strong_refs || node->local_strong_refs;
- int weak = !hlist_empty(&node->refs) || node->local_weak_refs || strong;
- if (weak && !node->has_weak_ref) {
- cmd = BR_INCREFS;
- cmd_name = "BR_INCREFS";
- node->has_weak_ref = 1;
- node->pending_weak_ref = 1;
- node->local_weak_refs++;
- } else if (strong && !node->has_strong_ref) {
- cmd = BR_ACQUIRE;
- cmd_name = "BR_ACQUIRE";
- node->has_strong_ref = 1;
- node->pending_strong_ref = 1;
- node->local_strong_refs++;
- } else if (!strong && node->has_strong_ref) {
- cmd = BR_RELEASE;
- cmd_name = "BR_RELEASE";
- node->has_strong_ref = 0;
- } else if (!weak && node->has_weak_ref) {
- cmd = BR_DECREFS;
- cmd_name = "BR_DECREFS";
- node->has_weak_ref = 0;
- }
- if (cmd != BR_NOOP) {
- if (put_user(cmd, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
- if (put_user(node->ptr, (void * __user *)ptr))
- return -EFAULT;
- ptr += sizeof(void *);
- if (put_user(node->cookie, (void * __user *)ptr))
- return -EFAULT;
- ptr += sizeof(void *);
-
- binder_stat_br(proc, thread, cmd);
- binder_debug(BINDER_DEBUG_USER_REFS,
- "binder: %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,
- "binder: %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);
- kfree(node);
- binder_stats_deleted(BINDER_STAT_NODE);
- } else {
- binder_debug(BINDER_DEBUG_INTERNAL_REFS,
- "binder: %d:%d node %d u%p c%p state unchanged\n",
- proc->pid, thread->pid, node->debug_id, node->ptr,
- node->cookie);
- }
- }
- } break;
- case BINDER_WORK_DEAD_BINDER:
- case BINDER_WORK_DEAD_BINDER_AND_CLEAR:
- case BINDER_WORK_CLEAR_DEATH_NOTIFICATION: {
- struct binder_ref_death *death;
- uint32_t cmd;
-
- death = container_of(w, struct binder_ref_death, work);
- if (w->type == BINDER_WORK_CLEAR_DEATH_NOTIFICATION)
- cmd = BR_CLEAR_DEATH_NOTIFICATION_DONE;
- else
- cmd = BR_DEAD_BINDER;
- if (put_user(cmd, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
- if (put_user(death->cookie, (void * __user *)ptr))
- return -EFAULT;
- ptr += sizeof(void *);
- binder_debug(BINDER_DEBUG_DEATH_NOTIFICATION,
- "binder: %d:%d %s %p\n",
- proc->pid, thread->pid,
- cmd == BR_DEAD_BINDER ?
- "BR_DEAD_BINDER" :
- "BR_CLEAR_DEATH_NOTIFICATION_DONE",
- death->cookie);
-
- if (w->type == BINDER_WORK_CLEAR_DEATH_NOTIFICATION) {
- list_del(&w->entry);
- kfree(death);
- binder_stats_deleted(BINDER_STAT_DEATH);
- } else
- list_move(&w->entry, &proc->delivered_death);
- if (cmd == BR_DEAD_BINDER)
- goto done; /* DEAD_BINDER notifications can cause transactions */
- } break;
- }
-
- if (!t)
- continue;
-
- BUG_ON(t->buffer == NULL);
- if (t->buffer->target_node) {
- struct binder_node *target_node = t->buffer->target_node;
- tr.target.ptr = target_node->ptr;
- tr.cookie = target_node->cookie;
- t->saved_priority = task_nice(current);
- if (t->priority < target_node->min_priority &&
- !(t->flags & TF_ONE_WAY))
- binder_set_nice(t->priority);
- else if (!(t->flags & TF_ONE_WAY) ||
- t->saved_priority > target_node->min_priority)
- binder_set_nice(target_node->min_priority);
- cmd = BR_TRANSACTION;
- } else {
- tr.target.ptr = NULL;
- tr.cookie = NULL;
- cmd = BR_REPLY;
- }
- tr.code = t->code;
- tr.flags = t->flags;
- tr.sender_euid = t->sender_euid;
-
- if (t->from) {
- struct task_struct *sender = t->from->proc->tsk;
- tr.sender_pid = task_tgid_nr_ns(sender,
- current->nsproxy->pid_ns);
- } else {
- tr.sender_pid = 0;
- }
-
- 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(void *));
-
- if (put_user(cmd, (uint32_t __user *)ptr))
- return -EFAULT;
- ptr += sizeof(uint32_t);
- if (copy_to_user(ptr, &tr, sizeof(tr)))
- return -EFAULT;
- ptr += sizeof(tr);
-
- binder_stat_br(proc, thread, cmd);
- binder_debug(BINDER_DEBUG_TRANSACTION,
- "binder: %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",
- t->debug_id, t->from ? t->from->proc->pid : 0,
- t->from ? t->from->pid : 0, cmd,
- t->buffer->data_size, t->buffer->offsets_size,
- tr.data.ptr.buffer, tr.data.ptr.offsets);
-
- list_del(&t->work.entry);
- t->buffer->allow_user_free = 1;
- if (cmd == BR_TRANSACTION && !(t->flags & TF_ONE_WAY)) {
- t->to_parent = thread->transaction_stack;
- t->to_thread = thread;
- thread->transaction_stack = t;
- } else {
- t->buffer->transaction = NULL;
- kfree(t);
- binder_stats_deleted(BINDER_STAT_TRANSACTION);
- }
- break;
- }
-
-done:
-
- *consumed = ptr - buffer;
- if (proc->requested_threads + proc->ready_threads == 0 &&
- proc->requested_threads_started < proc->max_threads &&
- (thread->looper & (BINDER_LOOPER_STATE_REGISTERED |
- BINDER_LOOPER_STATE_ENTERED)) /* the user-space code fails to */
- /*spawn a new thread if we leave this out */) {
- proc->requested_threads++;
- binder_debug(BINDER_DEBUG_THREADS,
- "binder: %d:%d BR_SPAWN_LOOPER\n",
- proc->pid, thread->pid);
- if (put_user(BR_SPAWN_LOOPER, (uint32_t __user *)buffer))
- return -EFAULT;
- }
- return 0;
-}
-
-static void binder_release_work(struct list_head *list)
-{
- struct binder_work *w;
- while (!list_empty(list)) {
- w = list_first_entry(list, struct binder_work, entry);
- list_del_init(&w->entry);
- switch (w->type) {
- case BINDER_WORK_TRANSACTION: {
- struct binder_transaction *t;
-
- t = container_of(w, struct binder_transaction, work);
- if (t->buffer->target_node && !(t->flags & TF_ONE_WAY))
- binder_send_failed_reply(t, BR_DEAD_REPLY);
- } break;
- case BINDER_WORK_TRANSACTION_COMPLETE: {
- kfree(w);
- binder_stats_deleted(BINDER_STAT_TRANSACTION_COMPLETE);
- } break;
- default:
- break;
- }
- }
-
-}
-
-static struct binder_thread *binder_get_thread(struct binder_proc *proc)
-{
- struct binder_thread *thread = NULL;
- struct rb_node *parent = NULL;
- struct rb_node **p = &proc->threads.rb_node;
-
- while (*p) {
- parent = *p;
- thread = rb_entry(parent, struct binder_thread, rb_node);
-
- if (current->pid < thread->pid)
- p = &(*p)->rb_left;
- else if (current->pid > thread->pid)
- p = &(*p)->rb_right;
- else
- break;
- }
- if (*p == NULL) {
- thread = kzalloc(sizeof(*thread), GFP_KERNEL);
- if (thread == NULL)
- return NULL;
- binder_stats_created(BINDER_STAT_THREAD);
- thread->proc = proc;
- thread->pid = current->pid;
- init_waitqueue_head(&thread->wait);
- INIT_LIST_HEAD(&thread->todo);
- rb_link_node(&thread->rb_node, parent, p);
- rb_insert_color(&thread->rb_node, &proc->threads);
- thread->looper |= BINDER_LOOPER_STATE_NEED_RETURN;
- thread->return_error = BR_OK;
- thread->return_error2 = BR_OK;
- }
- return thread;
-}
-
-static int binder_free_thread(struct binder_proc *proc,
- struct binder_thread *thread)
-{
- struct binder_transaction *t;
- struct binder_transaction *send_reply = NULL;
- int active_transactions = 0;
-
- rb_erase(&thread->rb_node, &proc->threads);
- t = thread->transaction_stack;
- if (t && t->to_thread == thread)
- send_reply = t;
- while (t) {
- active_transactions++;
- binder_debug(BINDER_DEBUG_DEAD_TRANSACTION,
- "binder: release %d:%d transaction %d "
- "%s, still active\n", proc->pid, thread->pid,
- t->debug_id,
- (t->to_thread == thread) ? "in" : "out");
-
- if (t->to_thread == thread) {
- t->to_proc = NULL;
- t->to_thread = NULL;
- if (t->buffer) {
- t->buffer->transaction = NULL;
- t->buffer = NULL;
- }
- t = t->to_parent;
- } else if (t->from == thread) {
- t->from = NULL;
- t = t->from_parent;
- } else
- BUG();
- }
- if (send_reply)
- binder_send_failed_reply(send_reply, BR_DEAD_REPLY);
- binder_release_work(&thread->todo);
- kfree(thread);
- binder_stats_deleted(BINDER_STAT_THREAD);
- return active_transactions;
-}
-
-static unsigned int binder_poll(struct file *filp,
- struct poll_table_struct *wait)
-{
- struct binder_proc *proc = filp->private_data;
- struct binder_thread *thread = NULL;
- int wait_for_proc_work;
-
- mutex_lock(&binder_lock);
- thread = binder_get_thread(proc);
-
- wait_for_proc_work = thread->transaction_stack == NULL &&
- list_empty(&thread->todo) && thread->return_error == BR_OK;
- mutex_unlock(&binder_lock);
-
- if (wait_for_proc_work) {
- if (binder_has_proc_work(proc, thread))
- return POLLIN;
- poll_wait(filp, &proc->wait, wait);
- if (binder_has_proc_work(proc, thread))
- return POLLIN;
- } else {
- if (binder_has_thread_work(thread))
- return POLLIN;
- poll_wait(filp, &thread->wait, wait);
- if (binder_has_thread_work(thread))
- return POLLIN;
- }
- return 0;
-}
-
-static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- int ret;
- struct binder_proc *proc = filp->private_data;
- struct binder_thread *thread;
- unsigned int size = _IOC_SIZE(cmd);
- void __user *ubuf = (void __user *)arg;
-
- /*printk(KERN_INFO "binder_ioctl: %d:%d %x %lx\n", proc->pid, current->pid, cmd, arg);*/
-
- ret = wait_event_interruptible(binder_user_error_wait, binder_stop_on_user_error < 2);
- if (ret)
- return ret;
-
- mutex_lock(&binder_lock);
- thread = binder_get_thread(proc);
- if (thread == NULL) {
- ret = -ENOMEM;
- goto err;
- }
-
- switch (cmd) {
- case BINDER_WRITE_READ: {
- struct binder_write_read bwr;
- if (size != sizeof(struct binder_write_read)) {
- ret = -EINVAL;
- goto err;
- }
- if (copy_from_user(&bwr, ubuf, sizeof(bwr))) {
- ret = -EFAULT;
- goto err;
- }
- binder_debug(BINDER_DEBUG_READ_WRITE,
- "binder: %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 *)bwr.write_buffer, bwr.write_size, &bwr.write_consumed);
- if (ret < 0) {
- bwr.read_consumed = 0;
- if (copy_to_user(ubuf, &bwr, sizeof(bwr)))
- ret = -EFAULT;
- goto err;
- }
- }
- if (bwr.read_size > 0) {
- ret = binder_thread_read(proc, thread, (void __user *)bwr.read_buffer, bwr.read_size, &bwr.read_consumed, filp->f_flags & O_NONBLOCK);
- if (!list_empty(&proc->todo))
- wake_up_interruptible(&proc->wait);
- if (ret < 0) {
- if (copy_to_user(ubuf, &bwr, sizeof(bwr)))
- ret = -EFAULT;
- goto err;
- }
- }
- binder_debug(BINDER_DEBUG_READ_WRITE,
- "binder: %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))) {
- ret = -EFAULT;
- goto err;
- }
- break;
- }
- case BINDER_SET_MAX_THREADS:
- if (copy_from_user(&proc->max_threads, ubuf, sizeof(proc->max_threads))) {
- ret = -EINVAL;
- goto err;
- }
- break;
- case BINDER_SET_CONTEXT_MGR:
- if (binder_context_mgr_node != NULL) {
- printk(KERN_ERR "binder: BINDER_SET_CONTEXT_MGR already set\n");
- ret = -EBUSY;
- goto err;
- }
- if (binder_context_mgr_uid != -1) {
- if (binder_context_mgr_uid != current->cred->euid) {
- printk(KERN_ERR "binder: BINDER_SET_"
- "CONTEXT_MGR bad uid %d != %d\n",
- current->cred->euid,
- binder_context_mgr_uid);
- ret = -EPERM;
- goto err;
- }
- } else
- binder_context_mgr_uid = current->cred->euid;
- binder_context_mgr_node = binder_new_node(proc, NULL, NULL);
- if (binder_context_mgr_node == NULL) {
- ret = -ENOMEM;
- goto err;
- }
- binder_context_mgr_node->local_weak_refs++;
- binder_context_mgr_node->local_strong_refs++;
- binder_context_mgr_node->has_strong_ref = 1;
- binder_context_mgr_node->has_weak_ref = 1;
- break;
- case BINDER_THREAD_EXIT:
- binder_debug(BINDER_DEBUG_THREADS, "binder: %d:%d exit\n",
- proc->pid, thread->pid);
- binder_free_thread(proc, thread);
- thread = NULL;
- break;
- case BINDER_VERSION:
- if (size != sizeof(struct binder_version)) {
- ret = -EINVAL;
- goto err;
- }
- if (put_user(BINDER_CURRENT_PROTOCOL_VERSION, &((struct binder_version *)ubuf)->protocol_version)) {
- ret = -EINVAL;
- goto err;
- }
- break;
- default:
- ret = -EINVAL;
- goto err;
- }
- ret = 0;
-err:
- if (thread)
- thread->looper &= ~BINDER_LOOPER_STATE_NEED_RETURN;
- mutex_unlock(&binder_lock);
- wait_event_interruptible(binder_user_error_wait, binder_stop_on_user_error < 2);
- if (ret && ret != -ERESTARTSYS)
- printk(KERN_INFO "binder: %d:%d ioctl %x %lx returned %d\n", proc->pid, current->pid, cmd, arg, ret);
- return ret;
-}
-
-static void binder_vma_open(struct vm_area_struct *vma)
-{
- struct binder_proc *proc = vma->vm_private_data;
- binder_debug(BINDER_DEBUG_OPEN_CLOSE,
- "binder: %d open vm area %lx-%lx (%ld K) vma %lx pagep %lx\n",
- proc->pid, vma->vm_start, vma->vm_end,
- (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags,
- (unsigned long)pgprot_val(vma->vm_page_prot));
- dump_stack();
-}
-
-static void binder_vma_close(struct vm_area_struct *vma)
-{
- struct binder_proc *proc = vma->vm_private_data;
- binder_debug(BINDER_DEBUG_OPEN_CLOSE,
- "binder: %d close vm area %lx-%lx (%ld K) vma %lx pagep %lx\n",
- proc->pid, vma->vm_start, vma->vm_end,
- (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags,
- (unsigned long)pgprot_val(vma->vm_page_prot));
- proc->vma = NULL;
- binder_defer_work(proc, BINDER_DEFERRED_PUT_FILES);
-}
-
-static struct vm_operations_struct binder_vm_ops = {
- .open = binder_vma_open,
- .close = binder_vma_close,
-};
-
-static int binder_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- int ret;
- struct vm_struct *area;
- struct binder_proc *proc = filp->private_data;
- const char *failure_string;
- struct binder_buffer *buffer;
-
- if ((vma->vm_end - vma->vm_start) > SZ_4M)
- vma->vm_end = vma->vm_start + SZ_4M;
-
- binder_debug(BINDER_DEBUG_OPEN_CLOSE,
- "binder_mmap: %d %lx-%lx (%ld K) vma %lx pagep %lx\n",
- proc->pid, vma->vm_start, vma->vm_end,
- (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags,
- (unsigned long)pgprot_val(vma->vm_page_prot));
-
- if (vma->vm_flags & FORBIDDEN_MMAP_FLAGS) {
- ret = -EPERM;
- failure_string = "bad vm_flags";
- goto err_bad_arg;
- }
- vma->vm_flags = (vma->vm_flags | VM_DONTCOPY) & ~VM_MAYWRITE;
-
- if (proc->buffer) {
- ret = -EBUSY;
- failure_string = "already mapped";
- goto err_already_mapped;
- }
-
- area = get_vm_area(vma->vm_end - vma->vm_start, VM_IOREMAP);
- if (area == NULL) {
- ret = -ENOMEM;
- failure_string = "get_vm_area";
- goto err_get_vm_area_failed;
- }
- proc->buffer = area->addr;
- proc->user_buffer_offset = vma->vm_start - (uintptr_t)proc->buffer;
-
-#ifdef CONFIG_CPU_CACHE_VIPT
- if (cache_is_vipt_aliasing()) {
- while (CACHE_COLOUR((vma->vm_start ^ (uint32_t)proc->buffer))) {
- printk(KERN_INFO "binder_mmap: %d %lx-%lx maps %p bad alignment\n", proc->pid, vma->vm_start, vma->vm_end, proc->buffer);
- vma->vm_start += PAGE_SIZE;
- }
- }
-#endif
- proc->pages = kzalloc(sizeof(proc->pages[0]) * ((vma->vm_end - vma->vm_start) / PAGE_SIZE), GFP_KERNEL);
- if (proc->pages == NULL) {
- ret = -ENOMEM;
- failure_string = "alloc page array";
- goto err_alloc_pages_failed;
- }
- proc->buffer_size = vma->vm_end - vma->vm_start;
-
- vma->vm_ops = &binder_vm_ops;
- vma->vm_private_data = proc;
-
- if (binder_update_page_range(proc, 1, proc->buffer, proc->buffer + PAGE_SIZE, vma)) {
- ret = -ENOMEM;
- failure_string = "alloc small buf";
- goto err_alloc_small_buf_failed;
- }
- buffer = proc->buffer;
- INIT_LIST_HEAD(&proc->buffers);
- list_add(&buffer->entry, &proc->buffers);
- buffer->free = 1;
- binder_insert_free_buffer(proc, buffer);
- proc->free_async_space = proc->buffer_size / 2;
- barrier();
- proc->files = get_files_struct(current);
- proc->vma = vma;
-
- /*printk(KERN_INFO "binder_mmap: %d %lx-%lx maps %p\n",
- proc->pid, vma->vm_start, vma->vm_end, proc->buffer);*/
- return 0;
-
-err_alloc_small_buf_failed:
- kfree(proc->pages);
- proc->pages = NULL;
-err_alloc_pages_failed:
- vfree(proc->buffer);
- proc->buffer = NULL;
-err_get_vm_area_failed:
-err_already_mapped:
-err_bad_arg:
- printk(KERN_ERR "binder_mmap: %d %lx-%lx %s failed %d\n",
- proc->pid, vma->vm_start, vma->vm_end, failure_string, ret);
- return ret;
-}
-
-static int binder_open(struct inode *nodp, struct file *filp)
-{
- struct binder_proc *proc;
-
- binder_debug(BINDER_DEBUG_OPEN_CLOSE, "binder_open: %d:%d\n",
- current->group_leader->pid, current->pid);
-
- proc = kzalloc(sizeof(*proc), GFP_KERNEL);
- if (proc == NULL)
- return -ENOMEM;
- get_task_struct(current);
- proc->tsk = current;
- INIT_LIST_HEAD(&proc->todo);
- init_waitqueue_head(&proc->wait);
- proc->default_priority = task_nice(current);
- mutex_lock(&binder_lock);
- binder_stats_created(BINDER_STAT_PROC);
- hlist_add_head(&proc->proc_node, &binder_procs);
- proc->pid = current->group_leader->pid;
- INIT_LIST_HEAD(&proc->delivered_death);
- filp->private_data = proc;
- mutex_unlock(&binder_lock);
-
- if (binder_proc_dir_entry_proc) {
- char strbuf[11];
- snprintf(strbuf, sizeof(strbuf), "%u", proc->pid);
- remove_proc_entry(strbuf, binder_proc_dir_entry_proc);
- create_proc_read_entry(strbuf, S_IRUGO,
- binder_proc_dir_entry_proc,
- binder_read_proc_proc, proc);
- }
-
- return 0;
-}
-
-static int binder_flush(struct file *filp, fl_owner_t id)
-{
- struct binder_proc *proc = filp->private_data;
-
- binder_defer_work(proc, BINDER_DEFERRED_FLUSH);
-
- return 0;
-}
-
-static void binder_deferred_flush(struct binder_proc *proc)
-{
- struct rb_node *n;
- int wake_count = 0;
- for (n = rb_first(&proc->threads); n != NULL; n = rb_next(n)) {
- struct binder_thread *thread = rb_entry(n, struct binder_thread, rb_node);
- thread->looper |= BINDER_LOOPER_STATE_NEED_RETURN;
- if (thread->looper & BINDER_LOOPER_STATE_WAITING) {
- wake_up_interruptible(&thread->wait);
- wake_count++;
- }
- }
- wake_up_interruptible_all(&proc->wait);
-
- binder_debug(BINDER_DEBUG_OPEN_CLOSE,
- "binder_flush: %d woke %d threads\n", proc->pid,
- wake_count);
-}
-
-static int binder_release(struct inode *nodp, struct file *filp)
-{
- struct binder_proc *proc = filp->private_data;
- if (binder_proc_dir_entry_proc) {
- char strbuf[11];
- snprintf(strbuf, sizeof(strbuf), "%u", proc->pid);
- remove_proc_entry(strbuf, binder_proc_dir_entry_proc);
- }
-
- binder_defer_work(proc, BINDER_DEFERRED_RELEASE);
-
- return 0;
-}
-
-static void binder_deferred_release(struct binder_proc *proc)
-{
- struct hlist_node *pos;
- struct binder_transaction *t;
- struct rb_node *n;
- int threads, nodes, incoming_refs, outgoing_refs, buffers, active_transactions, page_count;
-
- BUG_ON(proc->vma);
- BUG_ON(proc->files);
-
- hlist_del(&proc->proc_node);
- if (binder_context_mgr_node && binder_context_mgr_node->proc == proc) {
- binder_debug(BINDER_DEBUG_DEAD_BINDER,
- "binder_release: %d context_mgr_node gone\n",
- proc->pid);
- binder_context_mgr_node = NULL;
- }
-
- threads = 0;
- active_transactions = 0;
- while ((n = rb_first(&proc->threads))) {
- struct binder_thread *thread = rb_entry(n, struct binder_thread, rb_node);
- threads++;
- active_transactions += binder_free_thread(proc, thread);
- }
- nodes = 0;
- incoming_refs = 0;
- while ((n = rb_first(&proc->nodes))) {
- struct binder_node *node = rb_entry(n, struct binder_node, rb_node);
-
- nodes++;
- rb_erase(&node->rb_node, &proc->nodes);
- list_del_init(&node->work.entry);
- if (hlist_empty(&node->refs)) {
- kfree(node);
- binder_stats_deleted(BINDER_STAT_NODE);
- } else {
- struct binder_ref *ref;
- int death = 0;
-
- node->proc = NULL;
- node->local_strong_refs = 0;
- node->local_weak_refs = 0;
- hlist_add_head(&node->dead_node, &binder_dead_nodes);
-
- hlist_for_each_entry(ref, pos, &node->refs, node_entry) {
- incoming_refs++;
- if (ref->death) {
- death++;
- if (list_empty(&ref->death->work.entry)) {
- ref->death->work.type = BINDER_WORK_DEAD_BINDER;
- list_add_tail(&ref->death->work.entry, &ref->proc->todo);
- wake_up_interruptible(&ref->proc->wait);
- } else
- BUG();
- }
- }
- binder_debug(BINDER_DEBUG_DEAD_BINDER,
- "binder: node %d now dead, "
- "refs %d, death %d\n", node->debug_id,
- incoming_refs, death);
- }
- }
- outgoing_refs = 0;
- while ((n = rb_first(&proc->refs_by_desc))) {
- struct binder_ref *ref = rb_entry(n, struct binder_ref,
- rb_node_desc);
- outgoing_refs++;
- binder_delete_ref(ref);
- }
- binder_release_work(&proc->todo);
- buffers = 0;
-
- while ((n = rb_first(&proc->allocated_buffers))) {
- struct binder_buffer *buffer = rb_entry(n, struct binder_buffer,
- rb_node);
- t = buffer->transaction;
- if (t) {
- t->buffer = NULL;
- buffer->transaction = NULL;
- printk(KERN_ERR "binder: release proc %d, "
- "transaction %d, not freed\n",
- proc->pid, t->debug_id);
- /*BUG();*/
- }
- binder_free_buf(proc, buffer);
- buffers++;
- }
-
- binder_stats_deleted(BINDER_STAT_PROC);
-
- page_count = 0;
- if (proc->pages) {
- int i;
- for (i = 0; i < proc->buffer_size / PAGE_SIZE; i++) {
- if (proc->pages[i]) {
- binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "binder_release: %d: "
- "page %d at %p not freed\n",
- proc->pid, i,
- proc->buffer + i * PAGE_SIZE);
- __free_page(proc->pages[i]);
- page_count++;
- }
- }
- kfree(proc->pages);
- vfree(proc->buffer);
- }
-
- put_task_struct(proc->tsk);
-
- binder_debug(BINDER_DEBUG_OPEN_CLOSE,
- "binder_release: %d threads %d, nodes %d (ref %d), "
- "refs %d, active transactions %d, buffers %d, "
- "pages %d\n",
- proc->pid, threads, nodes, incoming_refs, outgoing_refs,
- active_transactions, buffers, page_count);
-
- kfree(proc);
-}
-
-static void binder_deferred_func(struct work_struct *work)
-{
- struct binder_proc *proc;
- struct files_struct *files;
-
- int defer;
- do {
- mutex_lock(&binder_lock);
- mutex_lock(&binder_deferred_lock);
- if (!hlist_empty(&binder_deferred_list)) {
- proc = hlist_entry(binder_deferred_list.first,
- struct binder_proc, deferred_work_node);
- hlist_del_init(&proc->deferred_work_node);
- defer = proc->deferred_work;
- proc->deferred_work = 0;
- } else {
- proc = NULL;
- defer = 0;
- }
- mutex_unlock(&binder_deferred_lock);
-
- files = NULL;
- if (defer & BINDER_DEFERRED_PUT_FILES) {
- files = proc->files;
- if (files)
- proc->files = NULL;
- }
-
- if (defer & BINDER_DEFERRED_FLUSH)
- binder_deferred_flush(proc);
-
- if (defer & BINDER_DEFERRED_RELEASE)
- binder_deferred_release(proc); /* frees proc */
-
- mutex_unlock(&binder_lock);
- if (files)
- put_files_struct(files);
- } while (proc);
-}
-static DECLARE_WORK(binder_deferred_work, binder_deferred_func);
-
-static void
-binder_defer_work(struct binder_proc *proc, enum binder_deferred_state defer)
-{
- mutex_lock(&binder_deferred_lock);
- proc->deferred_work |= defer;
- if (hlist_unhashed(&proc->deferred_work_node)) {
- hlist_add_head(&proc->deferred_work_node,
- &binder_deferred_list);
- schedule_work(&binder_deferred_work);
- }
- mutex_unlock(&binder_deferred_lock);
-}
-
-static char *print_binder_transaction(char *buf, char *end, const char *prefix,
- struct binder_transaction *t)
-{
- buf += snprintf(buf, end - buf,
- "%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,
- t->to_proc ? t->to_proc->pid : 0,
- t->to_thread ? t->to_thread->pid : 0,
- t->code, t->flags, t->priority, t->need_reply);
- if (buf >= end)
- return buf;
- if (t->buffer == NULL) {
- buf += snprintf(buf, end - buf, " buffer free\n");
- return buf;
- }
- if (t->buffer->target_node) {
- buf += snprintf(buf, end - buf, " node %d",
- t->buffer->target_node->debug_id);
- if (buf >= end)
- return buf;
- }
- buf += snprintf(buf, end - buf, " size %zd:%zd data %p\n",
- t->buffer->data_size, t->buffer->offsets_size,
- t->buffer->data);
- return buf;
-}
-
-static char *print_binder_buffer(char *buf, char *end, const char *prefix,
- struct binder_buffer *buffer)
-{
- buf += snprintf(buf, end - buf, "%s %d: %p size %zd:%zd %s\n",
- prefix, buffer->debug_id, buffer->data,
- buffer->data_size, buffer->offsets_size,
- buffer->transaction ? "active" : "delivered");
- return buf;
-}
-
-static char *print_binder_work(char *buf, char *end, const char *prefix,
- const char *transaction_prefix,
- struct binder_work *w)
-{
- struct binder_node *node;
- struct binder_transaction *t;
-
- switch (w->type) {
- case BINDER_WORK_TRANSACTION:
- t = container_of(w, struct binder_transaction, work);
- buf = print_binder_transaction(buf, end, transaction_prefix, t);
- break;
- case BINDER_WORK_TRANSACTION_COMPLETE:
- buf += snprintf(buf, end - buf,
- "%stransaction complete\n", prefix);
- break;
- case BINDER_WORK_NODE:
- node = container_of(w, struct binder_node, work);
- buf += snprintf(buf, end - buf, "%snode work %d: u%p c%p\n",
- prefix, node->debug_id, node->ptr,
- node->cookie);
- break;
- case BINDER_WORK_DEAD_BINDER:
- buf += snprintf(buf, end - buf, "%shas dead binder\n", prefix);
- break;
- case BINDER_WORK_DEAD_BINDER_AND_CLEAR:
- buf += snprintf(buf, end - buf,
- "%shas cleared dead binder\n", prefix);
- break;
- case BINDER_WORK_CLEAR_DEATH_NOTIFICATION:
- buf += snprintf(buf, end - buf,
- "%shas cleared death notification\n", prefix);
- break;
- default:
- buf += snprintf(buf, end - buf, "%sunknown work: type %d\n",
- prefix, w->type);
- break;
- }
- return buf;
-}
-
-static char *print_binder_thread(char *buf, char *end,
- struct binder_thread *thread,
- int print_always)
-{
- struct binder_transaction *t;
- struct binder_work *w;
- char *start_buf = buf;
- char *header_buf;
-
- buf += snprintf(buf, end - buf, " thread %d: l %02x\n",
- thread->pid, thread->looper);
- header_buf = buf;
- t = thread->transaction_stack;
- while (t) {
- if (buf >= end)
- break;
- if (t->from == thread) {
- buf = print_binder_transaction(buf, end,
- " outgoing transaction", t);
- t = t->from_parent;
- } else if (t->to_thread == thread) {
- buf = print_binder_transaction(buf, end,
- " incoming transaction", t);
- t = t->to_parent;
- } else {
- buf = print_binder_transaction(buf, end,
- " bad transaction", t);
- t = NULL;
- }
- }
- list_for_each_entry(w, &thread->todo, entry) {
- if (buf >= end)
- break;
- buf = print_binder_work(buf, end, " ",
- " pending transaction", w);
- }
- if (!print_always && buf == header_buf)
- buf = start_buf;
- return buf;
-}
-
-static char *print_binder_node(char *buf, char *end, struct binder_node *node)
-{
- struct binder_ref *ref;
- struct hlist_node *pos;
- struct binder_work *w;
- int count;
-
- count = 0;
- hlist_for_each_entry(ref, pos, &node->refs, node_entry)
- count++;
-
- buf += snprintf(buf, end - buf,
- " 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,
- node->internal_strong_refs, count);
- if (buf >= end)
- return buf;
- if (count) {
- buf += snprintf(buf, end - buf, " proc");
- if (buf >= end)
- return buf;
- hlist_for_each_entry(ref, pos, &node->refs, node_entry) {
- buf += snprintf(buf, end - buf, " %d", ref->proc->pid);
- if (buf >= end)
- return buf;
- }
- }
- buf += snprintf(buf, end - buf, "\n");
- list_for_each_entry(w, &node->async_todo, entry) {
- if (buf >= end)
- break;
- buf = print_binder_work(buf, end, " ",
- " pending async transaction", w);
- }
- return buf;
-}
-
-static char *print_binder_ref(char *buf, char *end, struct binder_ref *ref)
-{
- buf += snprintf(buf, end - buf,
- " ref %d: desc %d %snode %d s %d w %d d %p\n",
- ref->debug_id, ref->desc,
- ref->node->proc ? "" : "dead ", ref->node->debug_id,
- ref->strong, ref->weak, ref->death);
- return buf;
-}
-
-static char *print_binder_proc(char *buf, char *end,
- struct binder_proc *proc, int print_all)
-{
- struct binder_work *w;
- struct rb_node *n;
- char *start_buf = buf;
- char *header_buf;
-
- buf += snprintf(buf, end - buf, "proc %d\n", proc->pid);
- header_buf = buf;
-
- for (n = rb_first(&proc->threads);
- n != NULL && buf < end;
- n = rb_next(n))
- buf = print_binder_thread(buf, end,
- rb_entry(n, struct binder_thread,
- rb_node), print_all);
- for (n = rb_first(&proc->nodes);
- n != NULL && buf < end;
- n = rb_next(n)) {
- struct binder_node *node = rb_entry(n, struct binder_node,
- rb_node);
- if (print_all || node->has_async_transaction)
- buf = print_binder_node(buf, end, node);
- }
- if (print_all) {
- for (n = rb_first(&proc->refs_by_desc);
- n != NULL && buf < end;
- n = rb_next(n))
- buf = print_binder_ref(buf, end,
- rb_entry(n, struct binder_ref,
- rb_node_desc));
- }
- for (n = rb_first(&proc->allocated_buffers);
- n != NULL && buf < end;
- n = rb_next(n))
- buf = print_binder_buffer(buf, end, " buffer",
- rb_entry(n, struct binder_buffer,
- rb_node));
- list_for_each_entry(w, &proc->todo, entry) {
- if (buf >= end)
- break;
- buf = print_binder_work(buf, end, " ",
- " pending transaction", w);
- }
- list_for_each_entry(w, &proc->delivered_death, entry) {
- if (buf >= end)
- break;
- buf += snprintf(buf, end - buf,
- " has delivered dead binder\n");
- break;
- }
- if (!print_all && buf == header_buf)
- buf = start_buf;
- return buf;
-}
-
-static const char *binder_return_strings[] = {
- "BR_ERROR",
- "BR_OK",
- "BR_TRANSACTION",
- "BR_REPLY",
- "BR_ACQUIRE_RESULT",
- "BR_DEAD_REPLY",
- "BR_TRANSACTION_COMPLETE",
- "BR_INCREFS",
- "BR_ACQUIRE",
- "BR_RELEASE",
- "BR_DECREFS",
- "BR_ATTEMPT_ACQUIRE",
- "BR_NOOP",
- "BR_SPAWN_LOOPER",
- "BR_FINISHED",
- "BR_DEAD_BINDER",
- "BR_CLEAR_DEATH_NOTIFICATION_DONE",
- "BR_FAILED_REPLY"
-};
-
-static const char *binder_command_strings[] = {
- "BC_TRANSACTION",
- "BC_REPLY",
- "BC_ACQUIRE_RESULT",
- "BC_FREE_BUFFER",
- "BC_INCREFS",
- "BC_ACQUIRE",
- "BC_RELEASE",
- "BC_DECREFS",
- "BC_INCREFS_DONE",
- "BC_ACQUIRE_DONE",
- "BC_ATTEMPT_ACQUIRE",
- "BC_REGISTER_LOOPER",
- "BC_ENTER_LOOPER",
- "BC_EXIT_LOOPER",
- "BC_REQUEST_DEATH_NOTIFICATION",
- "BC_CLEAR_DEATH_NOTIFICATION",
- "BC_DEAD_BINDER_DONE"
-};
-
-static const char *binder_objstat_strings[] = {
- "proc",
- "thread",
- "node",
- "ref",
- "death",
- "transaction",
- "transaction_complete"
-};
-
-static char *print_binder_stats(char *buf, char *end, const char *prefix,
- struct binder_stats *stats)
-{
- int i;
-
- BUILD_BUG_ON(ARRAY_SIZE(stats->bc) !=
- ARRAY_SIZE(binder_command_strings));
- for (i = 0; i < ARRAY_SIZE(stats->bc); i++) {
- if (stats->bc[i])
- buf += snprintf(buf, end - buf, "%s%s: %d\n", prefix,
- binder_command_strings[i],
- stats->bc[i]);
- if (buf >= end)
- return buf;
- }
-
- BUILD_BUG_ON(ARRAY_SIZE(stats->br) !=
- ARRAY_SIZE(binder_return_strings));
- for (i = 0; i < ARRAY_SIZE(stats->br); i++) {
- if (stats->br[i])
- buf += snprintf(buf, end - buf, "%s%s: %d\n", prefix,
- binder_return_strings[i], stats->br[i]);
- if (buf >= end)
- return buf;
- }
-
- BUILD_BUG_ON(ARRAY_SIZE(stats->obj_created) !=
- ARRAY_SIZE(binder_objstat_strings));
- BUILD_BUG_ON(ARRAY_SIZE(stats->obj_created) !=
- ARRAY_SIZE(stats->obj_deleted));
- for (i = 0; i < ARRAY_SIZE(stats->obj_created); i++) {
- if (stats->obj_created[i] || stats->obj_deleted[i])
- buf += snprintf(buf, end - buf,
- "%s%s: active %d total %d\n", prefix,
- binder_objstat_strings[i],
- stats->obj_created[i] -
- stats->obj_deleted[i],
- stats->obj_created[i]);
- if (buf >= end)
- return buf;
- }
- return buf;
-}
-
-static char *print_binder_proc_stats(char *buf, char *end,
- struct binder_proc *proc)
-{
- struct binder_work *w;
- struct rb_node *n;
- int count, strong, weak;
-
- buf += snprintf(buf, end - buf, "proc %d\n", proc->pid);
- if (buf >= end)
- return buf;
- count = 0;
- for (n = rb_first(&proc->threads); n != NULL; n = rb_next(n))
- count++;
- buf += snprintf(buf, end - buf, " threads: %d\n", count);
- if (buf >= end)
- return buf;
- buf += snprintf(buf, end - buf, " requested threads: %d+%d/%d\n"
- " ready threads %d\n"
- " free async space %zd\n", proc->requested_threads,
- proc->requested_threads_started, proc->max_threads,
- proc->ready_threads, proc->free_async_space);
- if (buf >= end)
- return buf;
- count = 0;
- for (n = rb_first(&proc->nodes); n != NULL; n = rb_next(n))
- count++;
- buf += snprintf(buf, end - buf, " nodes: %d\n", count);
- if (buf >= end)
- return buf;
- count = 0;
- strong = 0;
- weak = 0;
- for (n = rb_first(&proc->refs_by_desc); n != NULL; n = rb_next(n)) {
- struct binder_ref *ref = rb_entry(n, struct binder_ref,
- rb_node_desc);
- count++;
- strong += ref->strong;
- weak += ref->weak;
- }
- buf += snprintf(buf, end - buf, " refs: %d s %d w %d\n",
- count, strong, weak);
- if (buf >= end)
- return buf;
-
- count = 0;
- for (n = rb_first(&proc->allocated_buffers); n != NULL; n = rb_next(n))
- count++;
- buf += snprintf(buf, end - buf, " buffers: %d\n", count);
- if (buf >= end)
- return buf;
-
- count = 0;
- list_for_each_entry(w, &proc->todo, entry) {
- switch (w->type) {
- case BINDER_WORK_TRANSACTION:
- count++;
- break;
- default:
- break;
- }
- }
- buf += snprintf(buf, end - buf, " pending transactions: %d\n", count);
- if (buf >= end)
- return buf;
-
- buf = print_binder_stats(buf, end, " ", &proc->stats);
-
- return buf;
-}
-
-
-static int binder_read_proc_state(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct binder_proc *proc;
- struct hlist_node *pos;
- struct binder_node *node;
- int len = 0;
- char *buf = page;
- char *end = page + PAGE_SIZE;
- int do_lock = !binder_debug_no_lock;
-
- if (off)
- return 0;
-
- if (do_lock)
- mutex_lock(&binder_lock);
-
- buf += snprintf(buf, end - buf, "binder state:\n");
-
- if (!hlist_empty(&binder_dead_nodes))
- buf += snprintf(buf, end - buf, "dead nodes:\n");
- hlist_for_each_entry(node, pos, &binder_dead_nodes, dead_node) {
- if (buf >= end)
- break;
- buf = print_binder_node(buf, end, node);
- }
-
- hlist_for_each_entry(proc, pos, &binder_procs, proc_node) {
- if (buf >= end)
- break;
- buf = print_binder_proc(buf, end, proc, 1);
- }
- if (do_lock)
- mutex_unlock(&binder_lock);
- if (buf > page + PAGE_SIZE)
- buf = page + PAGE_SIZE;
-
- *start = page + off;
-
- len = buf - page;
- if (len > off)
- len -= off;
- else
- len = 0;
-
- return len < count ? len : count;
-}
-
-static int binder_read_proc_stats(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct binder_proc *proc;
- struct hlist_node *pos;
- int len = 0;
- char *p = page;
- int do_lock = !binder_debug_no_lock;
-
- if (off)
- return 0;
-
- if (do_lock)
- mutex_lock(&binder_lock);
-
- p += snprintf(p, PAGE_SIZE, "binder stats:\n");
-
- p = print_binder_stats(p, page + PAGE_SIZE, "", &binder_stats);
-
- hlist_for_each_entry(proc, pos, &binder_procs, proc_node) {
- if (p >= page + PAGE_SIZE)
- break;
- p = print_binder_proc_stats(p, page + PAGE_SIZE, proc);
- }
- if (do_lock)
- mutex_unlock(&binder_lock);
- if (p > page + PAGE_SIZE)
- p = page + PAGE_SIZE;
-
- *start = page + off;
-
- len = p - page;
- if (len > off)
- len -= off;
- else
- len = 0;
-
- return len < count ? len : count;
-}
-
-static int binder_read_proc_transactions(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct binder_proc *proc;
- struct hlist_node *pos;
- int len = 0;
- char *buf = page;
- char *end = page + PAGE_SIZE;
- int do_lock = !binder_debug_no_lock;
-
- if (off)
- return 0;
-
- if (do_lock)
- mutex_lock(&binder_lock);
-
- buf += snprintf(buf, end - buf, "binder transactions:\n");
- hlist_for_each_entry(proc, pos, &binder_procs, proc_node) {
- if (buf >= end)
- break;
- buf = print_binder_proc(buf, end, proc, 0);
- }
- if (do_lock)
- mutex_unlock(&binder_lock);
- if (buf > page + PAGE_SIZE)
- buf = page + PAGE_SIZE;
-
- *start = page + off;
-
- len = buf - page;
- if (len > off)
- len -= off;
- else
- len = 0;
-
- return len < count ? len : count;
-}
-
-static int binder_read_proc_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct binder_proc *proc = data;
- int len = 0;
- char *p = page;
- int do_lock = !binder_debug_no_lock;
-
- if (off)
- return 0;
-
- if (do_lock)
- mutex_lock(&binder_lock);
- p += snprintf(p, PAGE_SIZE, "binder proc state:\n");
- p = print_binder_proc(p, page + PAGE_SIZE, proc, 1);
- if (do_lock)
- mutex_unlock(&binder_lock);
-
- if (p > page + PAGE_SIZE)
- p = page + PAGE_SIZE;
- *start = page + off;
-
- len = p - page;
- if (len > off)
- len -= off;
- else
- len = 0;
-
- return len < count ? len : count;
-}
-
-static char *print_binder_transaction_log_entry(char *buf, char *end,
- struct binder_transaction_log_entry *e)
-{
- buf += snprintf(buf, end - buf,
- "%d: %s from %d:%d to %d:%d node %d handle %d "
- "size %d:%d\n",
- e->debug_id, (e->call_type == 2) ? "reply" :
- ((e->call_type == 1) ? "async" : "call "), e->from_proc,
- e->from_thread, e->to_proc, e->to_thread, e->to_node,
- e->target_handle, e->data_size, e->offsets_size);
- return buf;
-}
-
-static int binder_read_proc_transaction_log(
- char *page, char **start, off_t off, int count, int *eof, void *data)
-{
- struct binder_transaction_log *log = data;
- int len = 0;
- int i;
- char *buf = page;
- char *end = page + PAGE_SIZE;
-
- if (off)
- return 0;
-
- if (log->full) {
- for (i = log->next; i < ARRAY_SIZE(log->entry); i++) {
- if (buf >= end)
- break;
- buf = print_binder_transaction_log_entry(buf, end,
- &log->entry[i]);
- }
- }
- for (i = 0; i < log->next; i++) {
- if (buf >= end)
- break;
- buf = print_binder_transaction_log_entry(buf, end,
- &log->entry[i]);
- }
-
- *start = page + off;
-
- len = buf - page;
- if (len > off)
- len -= off;
- else
- len = 0;
-
- return len < count ? len : count;
-}
-
-static const struct file_operations binder_fops = {
- .owner = THIS_MODULE,
- .poll = binder_poll,
- .unlocked_ioctl = binder_ioctl,
- .mmap = binder_mmap,
- .open = binder_open,
- .flush = binder_flush,
- .release = binder_release,
-};
-
-static struct miscdevice binder_miscdev = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = "binder",
- .fops = &binder_fops
-};
-
-static int __init binder_init(void)
-{
- int ret;
-
- binder_proc_dir_entry_root = proc_mkdir("binder", NULL);
- if (binder_proc_dir_entry_root)
- binder_proc_dir_entry_proc = proc_mkdir("proc",
- binder_proc_dir_entry_root);
- ret = misc_register(&binder_miscdev);
- if (binder_proc_dir_entry_root) {
- create_proc_read_entry("state",
- S_IRUGO,
- binder_proc_dir_entry_root,
- binder_read_proc_state,
- NULL);
- create_proc_read_entry("stats",
- S_IRUGO,
- binder_proc_dir_entry_root,
- binder_read_proc_stats,
- NULL);
- create_proc_read_entry("transactions",
- S_IRUGO,
- binder_proc_dir_entry_root,
- binder_read_proc_transactions,
- NULL);
- create_proc_read_entry("transaction_log",
- S_IRUGO,
- binder_proc_dir_entry_root,
- binder_read_proc_transaction_log,
- &binder_transaction_log);
- create_proc_read_entry("failed_transaction_log",
- S_IRUGO,
- binder_proc_dir_entry_root,
- binder_read_proc_transaction_log,
- &binder_transaction_log_failed);
- }
- return ret;
-}
-
-device_initcall(binder_init);
-
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/android/binder.h b/drivers/staging/android/binder.h
deleted file mode 100644
index 863ae1a..0000000
--- a/drivers/staging/android/binder.h
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- * Copyright (C) 2008 Google, Inc.
- *
- * Based on, but no longer compatible with, the original
- * OpenBinder.org binder driver interface, which is:
- *
- * Copyright (c) 2005 Palmsource, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#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
-
-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. */
- unsigned long type;
- unsigned long flags;
-
- /* 8 bytes of data. */
- union {
- void *binder; /* local object */
- signed long handle; /* remote object */
- };
-
- /* extra data associated with local object */
- void *cookie;
-};
-
-/*
- * On 64-bit platforms where user code may run in 32-bits the driver must
- * translate the buffer (and local binder) addresses apropriately.
- */
-
-struct binder_write_read {
- signed long write_size; /* bytes to write */
- signed long write_consumed; /* bytes consumed by driver */
- unsigned long write_buffer;
- signed long read_size; /* bytes to read */
- signed long read_consumed; /* bytes consumed by driver */
- unsigned long read_buffer;
-};
-
-/* Use with BINDER_VERSION, driver fills in fields. */
-struct binder_version {
- /* driver protocol version -- increment with incompatible change */
- signed long 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, int64_t)
-#define BINDER_SET_MAX_THREADS _IOW('b', 5, size_t)
-#define BINDER_SET_IDLE_PRIORITY _IOW('b', 6, int)
-#define BINDER_SET_CONTEXT_MGR _IOW('b', 7, int)
-#define BINDER_THREAD_EXIT _IOW('b', 8, int)
-#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 {
- size_t handle; /* target descriptor of command transaction */
- void *ptr; /* target descriptor of return transaction */
- } target;
- void *cookie; /* target object cookie */
- unsigned int code; /* transaction command */
-
- /* General information about the transaction. */
- unsigned int flags;
- pid_t sender_pid;
- uid_t sender_euid;
- size_t data_size; /* number of bytes of data */
- size_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 */
- const void *buffer;
- /* offsets from buffer to flat_binder_object structs */
- const void *offsets;
- } ptr;
- uint8_t buf[8];
- } data;
-};
-
-struct binder_ptr_cookie {
- void *ptr;
- void *cookie;
-};
-
-struct binder_pri_desc {
- int priority;
- int desc;
-};
-
-struct binder_pri_ptr_cookie {
- int priority;
- void *ptr;
- void *cookie;
-};
-
-enum BinderDriverReturnProtocol {
- BR_ERROR = _IOR('r', 0, int),
- /*
- * 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, int),
- /*
- * 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 incomming 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, void *),
- /*
- * void *: cookie
- */
- BR_CLEAR_DEATH_NOTIFICATION_DONE = _IOR('r', 16, void *),
- /*
- * 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 BinderDriverCommandProtocol {
- 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, int),
- /*
- * 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, int),
- /*
- * void *: ptr to transaction data received on a read
- */
-
- BC_INCREFS = _IOW('c', 4, int),
- BC_ACQUIRE = _IOW('c', 5, int),
- BC_RELEASE = _IOW('c', 6, int),
- BC_DECREFS = _IOW('c', 7, int),
- /*
- * 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, void *),
- /*
- * void *: cookie
- */
-};
-
-#endif /* _LINUX_BINDER_H */
-
diff --git a/drivers/staging/android/logger.c b/drivers/staging/android/logger.c
deleted file mode 100644
index 6c10b45..0000000
--- a/drivers/staging/android/logger.c
+++ /dev/null
@@ -1,607 +0,0 @@
-/*
- * drivers/misc/logger.c
- *
- * A Logging Subsystem
- *
- * Copyright (C) 2007-2008 Google, Inc.
- *
- * Robert Love <rlove@google.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/uaccess.h>
-#include <linux/poll.h>
-#include <linux/time.h>
-#include "logger.h"
-
-#include <asm/ioctls.h>
-
-/*
- * struct logger_log - represents a specific log, such as 'main' or 'radio'
- *
- * This structure lives from module insertion until module removal, so it does
- * not need additional reference counting. The structure is protected by the
- * mutex 'mutex'.
- */
-struct logger_log {
- unsigned char *buffer;/* the ring buffer itself */
- struct miscdevice misc; /* misc device representing the log */
- wait_queue_head_t wq; /* wait queue for readers */
- struct list_head readers; /* this log's readers */
- struct mutex mutex; /* mutex protecting buffer */
- size_t w_off; /* current write head offset */
- size_t head; /* new readers start here */
- size_t size; /* size of the log */
-};
-
-/*
- * struct logger_reader - a logging device open for reading
- *
- * This object lives from open to release, so we don't need additional
- * reference counting. The structure is protected by log->mutex.
- */
-struct logger_reader {
- struct logger_log *log; /* associated log */
- struct list_head list; /* entry in logger_log's list */
- size_t r_off; /* current read head offset */
-};
-
-/* logger_offset - returns index 'n' into the log via (optimized) modulus */
-#define logger_offset(n) ((n) & (log->size - 1))
-
-/*
- * file_get_log - Given a file structure, return the associated log
- *
- * This isn't aesthetic. We have several goals:
- *
- * 1) Need to quickly obtain the associated log during an I/O operation
- * 2) Readers need to maintain state (logger_reader)
- * 3) Writers need to be very fast (open() should be a near no-op)
- *
- * In the reader case, we can trivially go file->logger_reader->logger_log.
- * For a writer, we don't want to maintain a logger_reader, so we just go
- * file->logger_log. Thus what file->private_data points at depends on whether
- * or not the file was opened for reading. This function hides that dirtiness.
- */
-static inline struct logger_log *file_get_log(struct file *file)
-{
- if (file->f_mode & FMODE_READ) {
- struct logger_reader *reader = file->private_data;
- return reader->log;
- } else
- return file->private_data;
-}
-
-/*
- * get_entry_len - Grabs the length of the payload of the next entry starting
- * from 'off'.
- *
- * Caller needs to hold log->mutex.
- */
-static __u32 get_entry_len(struct logger_log *log, size_t off)
-{
- __u16 val;
-
- switch (log->size - off) {
- case 1:
- memcpy(&val, log->buffer + off, 1);
- memcpy(((char *) &val) + 1, log->buffer, 1);
- break;
- default:
- memcpy(&val, log->buffer + off, 2);
- }
-
- return sizeof(struct logger_entry) + val;
-}
-
-/*
- * do_read_log_to_user - reads exactly 'count' bytes from 'log' into the
- * user-space buffer 'buf'. Returns 'count' on success.
- *
- * Caller must hold log->mutex.
- */
-static ssize_t do_read_log_to_user(struct logger_log *log,
- struct logger_reader *reader,
- char __user *buf,
- size_t count)
-{
- size_t len;
-
- /*
- * We read from the log in two disjoint operations. First, we read from
- * the current read head offset up to 'count' bytes or to the end of
- * the log, whichever comes first.
- */
- len = min(count, log->size - reader->r_off);
- if (copy_to_user(buf, log->buffer + reader->r_off, len))
- return -EFAULT;
-
- /*
- * Second, we read any remaining bytes, starting back at the head of
- * the log.
- */
- if (count != len)
- if (copy_to_user(buf + len, log->buffer, count - len))
- return -EFAULT;
-
- reader->r_off = logger_offset(reader->r_off + count);
-
- return count;
-}
-
-/*
- * logger_read - our log's read() method
- *
- * Behavior:
- *
- * - O_NONBLOCK works
- * - If there are no log entries to read, blocks until log is written to
- * - Atomically reads exactly one log entry
- *
- * Optimal read size is LOGGER_ENTRY_MAX_LEN. Will set errno to EINVAL if read
- * buffer is insufficient to hold next entry.
- */
-static ssize_t logger_read(struct file *file, char __user *buf,
- size_t count, loff_t *pos)
-{
- struct logger_reader *reader = file->private_data;
- struct logger_log *log = reader->log;
- ssize_t ret;
- DEFINE_WAIT(wait);
-
-start:
- while (1) {
- prepare_to_wait(&log->wq, &wait, TASK_INTERRUPTIBLE);
-
- mutex_lock(&log->mutex);
- ret = (log->w_off == reader->r_off);
- mutex_unlock(&log->mutex);
- if (!ret)
- break;
-
- if (file->f_flags & O_NONBLOCK) {
- ret = -EAGAIN;
- break;
- }
-
- if (signal_pending(current)) {
- ret = -EINTR;
- break;
- }
-
- schedule();
- }
-
- finish_wait(&log->wq, &wait);
- if (ret)
- return ret;
-
- mutex_lock(&log->mutex);
-
- /* is there still something to read or did we race? */
- if (unlikely(log->w_off == reader->r_off)) {
- mutex_unlock(&log->mutex);
- goto start;
- }
-
- /* get the size of the next entry */
- ret = get_entry_len(log, reader->r_off);
- if (count < ret) {
- ret = -EINVAL;
- goto out;
- }
-
- /* get exactly one entry from the log */
- ret = do_read_log_to_user(log, reader, buf, ret);
-
-out:
- mutex_unlock(&log->mutex);
-
- return ret;
-}
-
-/*
- * get_next_entry - return the offset of the first valid entry at least 'len'
- * bytes after 'off'.
- *
- * Caller must hold log->mutex.
- */
-static size_t get_next_entry(struct logger_log *log, size_t off, size_t len)
-{
- size_t count = 0;
-
- do {
- size_t nr = get_entry_len(log, off);
- off = logger_offset(off + nr);
- count += nr;
- } while (count < len);
-
- return off;
-}
-
-/*
- * clock_interval - is a < c < b in mod-space? Put another way, does the line
- * from a to b cross c?
- */
-static inline int clock_interval(size_t a, size_t b, size_t c)
-{
- if (b < a) {
- if (a < c || b >= c)
- return 1;
- } else {
- if (a < c && b >= c)
- return 1;
- }
-
- return 0;
-}
-
-/*
- * fix_up_readers - walk the list of all readers and "fix up" any who were
- * lapped by the writer; also do the same for the default "start head".
- * We do this by "pulling forward" the readers and start head to the first
- * entry after the new write head.
- *
- * The caller needs to hold log->mutex.
- */
-static void fix_up_readers(struct logger_log *log, size_t len)
-{
- size_t old = log->w_off;
- size_t new = logger_offset(old + len);
- struct logger_reader *reader;
-
- if (clock_interval(old, new, log->head))
- log->head = get_next_entry(log, log->head, len);
-
- list_for_each_entry(reader, &log->readers, list)
- if (clock_interval(old, new, reader->r_off))
- reader->r_off = get_next_entry(log, reader->r_off, len);
-}
-
-/*
- * do_write_log - writes 'len' bytes from 'buf' to 'log'
- *
- * The caller needs to hold log->mutex.
- */
-static void do_write_log(struct logger_log *log, const void *buf, size_t count)
-{
- size_t len;
-
- len = min(count, log->size - log->w_off);
- memcpy(log->buffer + log->w_off, buf, len);
-
- if (count != len)
- memcpy(log->buffer, buf + len, count - len);
-
- log->w_off = logger_offset(log->w_off + count);
-
-}
-
-/*
- * do_write_log_user - writes 'len' bytes from the user-space buffer 'buf' to
- * the log 'log'
- *
- * The caller needs to hold log->mutex.
- *
- * Returns 'count' on success, negative error code on failure.
- */
-static ssize_t do_write_log_from_user(struct logger_log *log,
- const void __user *buf, size_t count)
-{
- size_t len;
-
- len = min(count, log->size - log->w_off);
- if (len && copy_from_user(log->buffer + log->w_off, buf, len))
- return -EFAULT;
-
- if (count != len)
- if (copy_from_user(log->buffer, buf + len, count - len))
- return -EFAULT;
-
- log->w_off = logger_offset(log->w_off + count);
-
- return count;
-}
-
-/*
- * logger_aio_write - our write method, implementing support for write(),
- * writev(), and aio_write(). Writes are our fast path, and we try to optimize
- * them above all else.
- */
-ssize_t logger_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t ppos)
-{
- struct logger_log *log = file_get_log(iocb->ki_filp);
- size_t orig = log->w_off;
- struct logger_entry header;
- struct timespec now;
- ssize_t ret = 0;
-
- now = current_kernel_time();
-
- header.pid = current->tgid;
- header.tid = current->pid;
- header.sec = now.tv_sec;
- header.nsec = now.tv_nsec;
- header.len = min_t(size_t, iocb->ki_left, LOGGER_ENTRY_MAX_PAYLOAD);
-
- /* null writes succeed, return zero */
- if (unlikely(!header.len))
- return 0;
-
- mutex_lock(&log->mutex);
-
- /*
- * Fix up any readers, pulling them forward to the first readable
- * entry after (what will be) the new write offset. We do this now
- * because if we partially fail, we can end up with clobbered log
- * entries that encroach on readable buffer.
- */
- fix_up_readers(log, sizeof(struct logger_entry) + header.len);
-
- do_write_log(log, &header, sizeof(struct logger_entry));
-
- while (nr_segs-- > 0) {
- size_t len;
- ssize_t nr;
-
- /* figure out how much of this vector we can keep */
- len = min_t(size_t, iov->iov_len, header.len - ret);
-
- /* write out this segment's payload */
- nr = do_write_log_from_user(log, iov->iov_base, len);
- if (unlikely(nr < 0)) {
- log->w_off = orig;
- mutex_unlock(&log->mutex);
- return nr;
- }
-
- iov++;
- ret += nr;
- }
-
- mutex_unlock(&log->mutex);
-
- /* wake up any blocked readers */
- wake_up_interruptible(&log->wq);
-
- return ret;
-}
-
-static struct logger_log *get_log_from_minor(int);
-
-/*
- * logger_open - the log's open() file operation
- *
- * Note how near a no-op this is in the write-only case. Keep it that way!
- */
-static int logger_open(struct inode *inode, struct file *file)
-{
- struct logger_log *log;
- int ret;
-
- ret = nonseekable_open(inode, file);
- if (ret)
- return ret;
-
- log = get_log_from_minor(MINOR(inode->i_rdev));
- if (!log)
- return -ENODEV;
-
- if (file->f_mode & FMODE_READ) {
- struct logger_reader *reader;
-
- reader = kmalloc(sizeof(struct logger_reader), GFP_KERNEL);
- if (!reader)
- return -ENOMEM;
-
- reader->log = log;
- INIT_LIST_HEAD(&reader->list);
-
- mutex_lock(&log->mutex);
- reader->r_off = log->head;
- list_add_tail(&reader->list, &log->readers);
- mutex_unlock(&log->mutex);
-
- file->private_data = reader;
- } else
- file->private_data = log;
-
- return 0;
-}
-
-/*
- * logger_release - the log's release file operation
- *
- * Note this is a total no-op in the write-only case. Keep it that way!
- */
-static int logger_release(struct inode *ignored, struct file *file)
-{
- if (file->f_mode & FMODE_READ) {
- struct logger_reader *reader = file->private_data;
- list_del(&reader->list);
- kfree(reader);
- }
-
- return 0;
-}
-
-/*
- * logger_poll - the log's poll file operation, for poll/select/epoll
- *
- * Note we always return POLLOUT, because you can always write() to the log.
- * Note also that, strictly speaking, a return value of POLLIN does not
- * guarantee that the log is readable without blocking, as there is a small
- * chance that the writer can lap the reader in the interim between poll()
- * returning and the read() request.
- */
-static unsigned int logger_poll(struct file *file, poll_table *wait)
-{
- struct logger_reader *reader;
- struct logger_log *log;
- unsigned int ret = POLLOUT | POLLWRNORM;
-
- if (!(file->f_mode & FMODE_READ))
- return ret;
-
- reader = file->private_data;
- log = reader->log;
-
- poll_wait(file, &log->wq, wait);
-
- mutex_lock(&log->mutex);
- if (log->w_off != reader->r_off)
- ret |= POLLIN | POLLRDNORM;
- mutex_unlock(&log->mutex);
-
- return ret;
-}
-
-static long logger_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct logger_log *log = file_get_log(file);
- struct logger_reader *reader;
- long ret = -ENOTTY;
-
- mutex_lock(&log->mutex);
-
- switch (cmd) {
- case LOGGER_GET_LOG_BUF_SIZE:
- ret = log->size;
- break;
- case LOGGER_GET_LOG_LEN:
- if (!(file->f_mode & FMODE_READ)) {
- ret = -EBADF;
- break;
- }
- reader = file->private_data;
- if (log->w_off >= reader->r_off)
- ret = log->w_off - reader->r_off;
- else
- ret = (log->size - reader->r_off) + log->w_off;
- break;
- case LOGGER_GET_NEXT_ENTRY_LEN:
- if (!(file->f_mode & FMODE_READ)) {
- ret = -EBADF;
- break;
- }
- reader = file->private_data;
- if (log->w_off != reader->r_off)
- ret = get_entry_len(log, reader->r_off);
- else
- ret = 0;
- break;
- case LOGGER_FLUSH_LOG:
- if (!(file->f_mode & FMODE_WRITE)) {
- ret = -EBADF;
- break;
- }
- list_for_each_entry(reader, &log->readers, list)
- reader->r_off = log->w_off;
- log->head = log->w_off;
- ret = 0;
- break;
- }
-
- mutex_unlock(&log->mutex);
-
- return ret;
-}
-
-static const struct file_operations logger_fops = {
- .owner = THIS_MODULE,
- .read = logger_read,
- .aio_write = logger_aio_write,
- .poll = logger_poll,
- .unlocked_ioctl = logger_ioctl,
- .compat_ioctl = logger_ioctl,
- .open = logger_open,
- .release = logger_release,
-};
-
-/*
- * Defines a log structure with name 'NAME' and a size of 'SIZE' bytes, which
- * must be a power of two, greater than LOGGER_ENTRY_MAX_LEN, and less than
- * LONG_MAX minus LOGGER_ENTRY_MAX_LEN.
- */
-#define DEFINE_LOGGER_DEVICE(VAR, NAME, SIZE) \
-static unsigned char _buf_ ## VAR[SIZE]; \
-static struct logger_log VAR = { \
- .buffer = _buf_ ## VAR, \
- .misc = { \
- .minor = MISC_DYNAMIC_MINOR, \
- .name = NAME, \
- .fops = &logger_fops, \
- .parent = NULL, \
- }, \
- .wq = __WAIT_QUEUE_HEAD_INITIALIZER(VAR .wq), \
- .readers = LIST_HEAD_INIT(VAR .readers), \
- .mutex = __MUTEX_INITIALIZER(VAR .mutex), \
- .w_off = 0, \
- .head = 0, \
- .size = SIZE, \
-};
-
-DEFINE_LOGGER_DEVICE(log_main, LOGGER_LOG_MAIN, 64*1024)
-DEFINE_LOGGER_DEVICE(log_events, LOGGER_LOG_EVENTS, 256*1024)
-DEFINE_LOGGER_DEVICE(log_radio, LOGGER_LOG_RADIO, 64*1024)
-
-static struct logger_log *get_log_from_minor(int minor)
-{
- if (log_main.misc.minor == minor)
- return &log_main;
- if (log_events.misc.minor == minor)
- return &log_events;
- if (log_radio.misc.minor == minor)
- return &log_radio;
- return NULL;
-}
-
-static int __init init_log(struct logger_log *log)
-{
- int ret;
-
- ret = misc_register(&log->misc);
- if (unlikely(ret)) {
- printk(KERN_ERR "logger: failed to register misc "
- "device for log '%s'!\n", log->misc.name);
- return ret;
- }
-
- printk(KERN_INFO "logger: created %luK log '%s'\n",
- (unsigned long) log->size >> 10, log->misc.name);
-
- return 0;
-}
-
-static int __init logger_init(void)
-{
- int ret;
-
- ret = init_log(&log_main);
- if (unlikely(ret))
- goto out;
-
- ret = init_log(&log_events);
- if (unlikely(ret))
- goto out;
-
- ret = init_log(&log_radio);
- if (unlikely(ret))
- goto out;
-
-out:
- return ret;
-}
-device_initcall(logger_init);
diff --git a/drivers/staging/android/logger.h b/drivers/staging/android/logger.h
deleted file mode 100644
index a562434..0000000
--- a/drivers/staging/android/logger.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/* include/linux/logger.h
- *
- * Copyright (C) 2007-2008 Google, Inc.
- * Author: Robert Love <rlove@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _LINUX_LOGGER_H
-#define _LINUX_LOGGER_H
-
-#include <linux/types.h>
-#include <linux/ioctl.h>
-
-struct logger_entry {
- __u16 len; /* length of the payload */
- __u16 __pad; /* no matter what, we get 2 bytes of padding */
- __s32 pid; /* generating process's pid */
- __s32 tid; /* generating process's tid */
- __s32 sec; /* seconds since Epoch */
- __s32 nsec; /* nanoseconds */
- char msg[0]; /* the entry's payload */
-};
-
-#define LOGGER_LOG_RADIO "log_radio" /* radio-related messages */
-#define LOGGER_LOG_EVENTS "log_events" /* system/hardware events */
-#define LOGGER_LOG_MAIN "log_main" /* everything else */
-
-#define LOGGER_ENTRY_MAX_LEN (4*1024)
-#define LOGGER_ENTRY_MAX_PAYLOAD \
- (LOGGER_ENTRY_MAX_LEN - sizeof(struct logger_entry))
-
-#define __LOGGERIO 0xAE
-
-#define LOGGER_GET_LOG_BUF_SIZE _IO(__LOGGERIO, 1) /* size of log */
-#define LOGGER_GET_LOG_LEN _IO(__LOGGERIO, 2) /* used log len */
-#define LOGGER_GET_NEXT_ENTRY_LEN _IO(__LOGGERIO, 3) /* next entry len */
-#define LOGGER_FLUSH_LOG _IO(__LOGGERIO, 4) /* flush log */
-
-#endif /* _LINUX_LOGGER_H */
diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
deleted file mode 100644
index 935d281..0000000
--- a/drivers/staging/android/lowmemorykiller.c
+++ /dev/null
@@ -1,173 +0,0 @@
-/* drivers/misc/lowmemorykiller.c
- *
- * The lowmemorykiller driver lets user-space specify a set of memory thresholds
- * where processes with a range of oom_adj values will get killed. Specify the
- * minimum oom_adj values in /sys/module/lowmemorykiller/parameters/adj and the
- * number of free pages in /sys/module/lowmemorykiller/parameters/minfree. Both
- * files take a comma separated list of numbers in ascending order.
- *
- * For example, write "0,8" to /sys/module/lowmemorykiller/parameters/adj and
- * "1024,4096" to /sys/module/lowmemorykiller/parameters/minfree to kill processes
- * with a oom_adj value of 8 or higher when the free memory drops below 4096 pages
- * and kill processes with a oom_adj value of 0 or higher when the free memory
- * drops below 1024 pages.
- *
- * The driver considers memory used for caches to be free, but if a large
- * percentage of the cached memory is locked this can be very inaccurate
- * and processes may not get killed until the normal oom killer is triggered.
- *
- * Copyright (C) 2007-2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/oom.h>
-#include <linux/sched.h>
-
-static uint32_t lowmem_debug_level = 2;
-static int lowmem_adj[6] = {
- 0,
- 1,
- 6,
- 12,
-};
-static int lowmem_adj_size = 4;
-static size_t lowmem_minfree[6] = {
- 3 * 512, /* 6MB */
- 2 * 1024, /* 8MB */
- 4 * 1024, /* 16MB */
- 16 * 1024, /* 64MB */
-};
-static int lowmem_minfree_size = 4;
-
-#define lowmem_print(level, x...) \
- do { \
- if (lowmem_debug_level >= (level)) \
- printk(x); \
- } while (0)
-
-static int lowmem_shrink(int nr_to_scan, gfp_t gfp_mask)
-{
- struct task_struct *p;
- struct task_struct *selected = NULL;
- int rem = 0;
- int tasksize;
- int i;
- int min_adj = OOM_ADJUST_MAX + 1;
- int selected_tasksize = 0;
- int selected_oom_adj;
- int array_size = ARRAY_SIZE(lowmem_adj);
- int other_free = global_page_state(NR_FREE_PAGES);
- int other_file = global_page_state(NR_FILE_PAGES);
-
- if (lowmem_adj_size < array_size)
- array_size = lowmem_adj_size;
- if (lowmem_minfree_size < array_size)
- array_size = lowmem_minfree_size;
- for (i = 0; i < array_size; i++) {
- if (other_free < lowmem_minfree[i] &&
- other_file < lowmem_minfree[i]) {
- min_adj = lowmem_adj[i];
- break;
- }
- }
- if (nr_to_scan > 0)
- lowmem_print(3, "lowmem_shrink %d, %x, ofree %d %d, ma %d\n",
- nr_to_scan, gfp_mask, other_free, other_file,
- min_adj);
- rem = global_page_state(NR_ACTIVE_ANON) +
- global_page_state(NR_ACTIVE_FILE) +
- global_page_state(NR_INACTIVE_ANON) +
- global_page_state(NR_INACTIVE_FILE);
- if (nr_to_scan <= 0 || min_adj == OOM_ADJUST_MAX + 1) {
- lowmem_print(5, "lowmem_shrink %d, %x, return %d\n",
- nr_to_scan, gfp_mask, rem);
- return rem;
- }
- selected_oom_adj = min_adj;
-
- read_lock(&tasklist_lock);
- for_each_process(p) {
- struct mm_struct *mm;
- int oom_adj;
-
- task_lock(p);
- mm = p->mm;
- if (!mm) {
- task_unlock(p);
- continue;
- }
- oom_adj = mm->oom_adj;
- if (oom_adj < min_adj) {
- task_unlock(p);
- continue;
- }
- tasksize = get_mm_rss(mm);
- task_unlock(p);
- if (tasksize <= 0)
- continue;
- if (selected) {
- if (oom_adj < selected_oom_adj)
- continue;
- if (oom_adj == selected_oom_adj &&
- tasksize <= selected_tasksize)
- continue;
- }
- selected = p;
- selected_tasksize = tasksize;
- selected_oom_adj = oom_adj;
- lowmem_print(2, "select %d (%s), adj %d, size %d, to kill\n",
- p->pid, p->comm, oom_adj, tasksize);
- }
- if (selected) {
- lowmem_print(1, "send sigkill to %d (%s), adj %d, size %d\n",
- selected->pid, selected->comm,
- selected_oom_adj, selected_tasksize);
- force_sig(SIGKILL, selected);
- rem -= selected_tasksize;
- }
- lowmem_print(4, "lowmem_shrink %d, %x, return %d\n",
- nr_to_scan, gfp_mask, rem);
- read_unlock(&tasklist_lock);
- return rem;
-}
-
-static struct shrinker lowmem_shrinker = {
- .shrink = lowmem_shrink,
- .seeks = DEFAULT_SEEKS * 16
-};
-
-static int __init lowmem_init(void)
-{
- register_shrinker(&lowmem_shrinker);
- return 0;
-}
-
-static void __exit lowmem_exit(void)
-{
- unregister_shrinker(&lowmem_shrinker);
-}
-
-module_param_named(cost, lowmem_shrinker.seeks, int, S_IRUGO | S_IWUSR);
-module_param_array_named(adj, lowmem_adj, int, &lowmem_adj_size,
- S_IRUGO | S_IWUSR);
-module_param_array_named(minfree, lowmem_minfree, uint, &lowmem_minfree_size,
- S_IRUGO | S_IWUSR);
-module_param_named(debug_level, lowmem_debug_level, uint, S_IRUGO | S_IWUSR);
-
-module_init(lowmem_init);
-module_exit(lowmem_exit);
-
-MODULE_LICENSE("GPL");
-
diff --git a/drivers/staging/android/ram_console.c b/drivers/staging/android/ram_console.c
deleted file mode 100644
index 8f18a59..0000000
--- a/drivers/staging/android/ram_console.c
+++ /dev/null
@@ -1,410 +0,0 @@
-/* drivers/android/ram_console.c
- *
- * Copyright (C) 2007-2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/proc_fs.h>
-#include <linux/string.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
-#include <linux/rslib.h>
-#endif
-
-struct ram_console_buffer {
- uint32_t sig;
- uint32_t start;
- uint32_t size;
- uint8_t data[0];
-};
-
-#define RAM_CONSOLE_SIG (0x43474244) /* DBGC */
-
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT
-static char __initdata
- ram_console_old_log_init_buffer[CONFIG_ANDROID_RAM_CONSOLE_EARLY_SIZE];
-#endif
-static char *ram_console_old_log;
-static size_t ram_console_old_log_size;
-
-static struct ram_console_buffer *ram_console_buffer;
-static size_t ram_console_buffer_size;
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
-static char *ram_console_par_buffer;
-static struct rs_control *ram_console_rs_decoder;
-static int ram_console_corrected_bytes;
-static int ram_console_bad_blocks;
-#define ECC_BLOCK_SIZE CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_DATA_SIZE
-#define ECC_SIZE CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_ECC_SIZE
-#define ECC_SYMSIZE CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE
-#define ECC_POLY CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_POLYNOMIAL
-#endif
-
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
-static void ram_console_encode_rs8(uint8_t *data, size_t len, uint8_t *ecc)
-{
- int i;
- uint16_t par[ECC_SIZE];
- /* Initialize the parity buffer */
- memset(par, 0, sizeof(par));
- encode_rs8(ram_console_rs_decoder, data, len, par, 0);
- for (i = 0; i < ECC_SIZE; i++)
- ecc[i] = par[i];
-}
-
-static int ram_console_decode_rs8(void *data, size_t len, uint8_t *ecc)
-{
- int i;
- uint16_t par[ECC_SIZE];
- for (i = 0; i < ECC_SIZE; i++)
- par[i] = ecc[i];
- return decode_rs8(ram_console_rs_decoder, data, par, len,
- NULL, 0, NULL, 0, NULL);
-}
-#endif
-
-static void ram_console_update(const char *s, unsigned int count)
-{
- struct ram_console_buffer *buffer = ram_console_buffer;
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
- uint8_t *buffer_end = buffer->data + ram_console_buffer_size;
- uint8_t *block;
- uint8_t *par;
- int size = ECC_BLOCK_SIZE;
-#endif
- memcpy(buffer->data + buffer->start, s, count);
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
- block = buffer->data + (buffer->start & ~(ECC_BLOCK_SIZE - 1));
- par = ram_console_par_buffer +
- (buffer->start / ECC_BLOCK_SIZE) * ECC_SIZE;
- do {
- if (block + ECC_BLOCK_SIZE > buffer_end)
- size = buffer_end - block;
- ram_console_encode_rs8(block, size, par);
- block += ECC_BLOCK_SIZE;
- par += ECC_SIZE;
- } while (block < buffer->data + buffer->start + count);
-#endif
-}
-
-static void ram_console_update_header(void)
-{
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
- struct ram_console_buffer *buffer = ram_console_buffer;
- uint8_t *par;
- par = ram_console_par_buffer +
- DIV_ROUND_UP(ram_console_buffer_size, ECC_BLOCK_SIZE) * ECC_SIZE;
- ram_console_encode_rs8((uint8_t *)buffer, sizeof(*buffer), par);
-#endif
-}
-
-static void
-ram_console_write(struct console *console, const char *s, unsigned int count)
-{
- int rem;
- struct ram_console_buffer *buffer = ram_console_buffer;
-
- if (count > ram_console_buffer_size) {
- s += count - ram_console_buffer_size;
- count = ram_console_buffer_size;
- }
- rem = ram_console_buffer_size - buffer->start;
- if (rem < count) {
- ram_console_update(s, rem);
- s += rem;
- count -= rem;
- buffer->start = 0;
- buffer->size = ram_console_buffer_size;
- }
- ram_console_update(s, count);
-
- buffer->start += count;
- if (buffer->size < ram_console_buffer_size)
- buffer->size += count;
- ram_console_update_header();
-}
-
-static struct console ram_console = {
- .name = "ram",
- .write = ram_console_write,
- .flags = CON_PRINTBUFFER | CON_ENABLED,
- .index = -1,
-};
-
-static void __init
-ram_console_save_old(struct ram_console_buffer *buffer, char *dest)
-{
- size_t old_log_size = buffer->size;
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
- uint8_t *block;
- uint8_t *par;
- char strbuf[80];
- int strbuf_len;
-
- block = buffer->data;
- par = ram_console_par_buffer;
- while (block < buffer->data + buffer->size) {
- int numerr;
- int size = ECC_BLOCK_SIZE;
- if (block + size > buffer->data + ram_console_buffer_size)
- size = buffer->data + ram_console_buffer_size - block;
- numerr = ram_console_decode_rs8(block, size, par);
- if (numerr > 0) {
-#if 0
- printk(KERN_INFO "ram_console: error in block %p, %d\n",
- block, numerr);
-#endif
- ram_console_corrected_bytes += numerr;
- } else if (numerr < 0) {
-#if 0
- printk(KERN_INFO "ram_console: uncorrectable error in "
- "block %p\n", block);
-#endif
- ram_console_bad_blocks++;
- }
- block += ECC_BLOCK_SIZE;
- par += ECC_SIZE;
- }
- if (ram_console_corrected_bytes || ram_console_bad_blocks)
- strbuf_len = snprintf(strbuf, sizeof(strbuf),
- "\n%d Corrected bytes, %d unrecoverable blocks\n",
- ram_console_corrected_bytes, ram_console_bad_blocks);
- else
- strbuf_len = snprintf(strbuf, sizeof(strbuf),
- "\nNo errors detected\n");
- if (strbuf_len >= sizeof(strbuf))
- strbuf_len = sizeof(strbuf) - 1;
- old_log_size += strbuf_len;
-#endif
-
- if (dest == NULL) {
- dest = kmalloc(old_log_size, GFP_KERNEL);
- if (dest == NULL) {
- printk(KERN_ERR
- "ram_console: failed to allocate buffer\n");
- return;
- }
- }
-
- ram_console_old_log = dest;
- ram_console_old_log_size = old_log_size;
- memcpy(ram_console_old_log,
- &buffer->data[buffer->start], buffer->size - buffer->start);
- memcpy(ram_console_old_log + buffer->size - buffer->start,
- &buffer->data[0], buffer->start);
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
- memcpy(ram_console_old_log + old_log_size - strbuf_len,
- strbuf, strbuf_len);
-#endif
-}
-
-static int __init ram_console_init(struct ram_console_buffer *buffer,
- size_t buffer_size, char *old_buf)
-{
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
- int numerr;
- uint8_t *par;
-#endif
- ram_console_buffer = buffer;
- ram_console_buffer_size =
- buffer_size - sizeof(struct ram_console_buffer);
-
- if (ram_console_buffer_size > buffer_size) {
- pr_err("ram_console: buffer %p, invalid size %zu, "
- "datasize %zu\n", buffer, buffer_size,
- ram_console_buffer_size);
- return 0;
- }
-
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION
- ram_console_buffer_size -= (DIV_ROUND_UP(ram_console_buffer_size,
- ECC_BLOCK_SIZE) + 1) * ECC_SIZE;
-
- if (ram_console_buffer_size > buffer_size) {
- pr_err("ram_console: buffer %p, invalid size %zu, "
- "non-ecc datasize %zu\n",
- buffer, buffer_size, ram_console_buffer_size);
- return 0;
- }
-
- ram_console_par_buffer = buffer->data + ram_console_buffer_size;
-
-
- /* first consecutive root is 0
- * primitive element to generate roots = 1
- */
- ram_console_rs_decoder = init_rs(ECC_SYMSIZE, ECC_POLY, 0, 1, ECC_SIZE);
- if (ram_console_rs_decoder == NULL) {
- printk(KERN_INFO "ram_console: init_rs failed\n");
- return 0;
- }
-
- ram_console_corrected_bytes = 0;
- ram_console_bad_blocks = 0;
-
- par = ram_console_par_buffer +
- DIV_ROUND_UP(ram_console_buffer_size, ECC_BLOCK_SIZE) * ECC_SIZE;
-
- numerr = ram_console_decode_rs8(buffer, sizeof(*buffer), par);
- if (numerr > 0) {
- printk(KERN_INFO "ram_console: error in header, %d\n", numerr);
- ram_console_corrected_bytes += numerr;
- } else if (numerr < 0) {
- printk(KERN_INFO
- "ram_console: uncorrectable error in header\n");
- ram_console_bad_blocks++;
- }
-#endif
-
- if (buffer->sig == RAM_CONSOLE_SIG) {
- if (buffer->size > ram_console_buffer_size
- || buffer->start > buffer->size)
- printk(KERN_INFO "ram_console: found existing invalid "
- "buffer, size %d, start %d\n",
- buffer->size, buffer->start);
- else {
- printk(KERN_INFO "ram_console: found existing buffer, "
- "size %d, start %d\n",
- buffer->size, buffer->start);
- ram_console_save_old(buffer, old_buf);
- }
- } else {
- printk(KERN_INFO "ram_console: no valid data in buffer "
- "(sig = 0x%08x)\n", buffer->sig);
- }
-
- buffer->sig = RAM_CONSOLE_SIG;
- buffer->start = 0;
- buffer->size = 0;
-
- register_console(&ram_console);
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_ENABLE_VERBOSE
- console_verbose();
-#endif
- return 0;
-}
-
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT
-static int __init ram_console_early_init(void)
-{
- return ram_console_init((struct ram_console_buffer *)
- CONFIG_ANDROID_RAM_CONSOLE_EARLY_ADDR,
- CONFIG_ANDROID_RAM_CONSOLE_EARLY_SIZE,
- ram_console_old_log_init_buffer);
-}
-#else
-static int ram_console_driver_probe(struct platform_device *pdev)
-{
- struct resource *res = pdev->resource;
- size_t start;
- size_t buffer_size;
- void *buffer;
-
- if (res == NULL || pdev->num_resources != 1 ||
- !(res->flags & IORESOURCE_MEM)) {
- printk(KERN_ERR "ram_console: invalid resource, %p %d flags "
- "%lx\n", res, pdev->num_resources, res ? res->flags : 0);
- return -ENXIO;
- }
- buffer_size = res->end - res->start + 1;
- start = res->start;
- printk(KERN_INFO "ram_console: got buffer at %zx, size %zx\n",
- start, buffer_size);
- buffer = ioremap(res->start, buffer_size);
- if (buffer == NULL) {
- printk(KERN_ERR "ram_console: failed to map memory\n");
- return -ENOMEM;
- }
-
- return ram_console_init(buffer, buffer_size, NULL/* allocate */);
-}
-
-static struct platform_driver ram_console_driver = {
- .probe = ram_console_driver_probe,
- .driver = {
- .name = "ram_console",
- },
-};
-
-static int __init ram_console_module_init(void)
-{
- int err;
- err = platform_driver_register(&ram_console_driver);
- return err;
-}
-#endif
-
-static ssize_t ram_console_read_old(struct file *file, char __user *buf,
- size_t len, loff_t *offset)
-{
- loff_t pos = *offset;
- ssize_t count;
-
- if (pos >= ram_console_old_log_size)
- return 0;
-
- count = min(len, (size_t)(ram_console_old_log_size - pos));
- if (copy_to_user(buf, ram_console_old_log + pos, count))
- return -EFAULT;
-
- *offset += count;
- return count;
-}
-
-static const struct file_operations ram_console_file_ops = {
- .owner = THIS_MODULE,
- .read = ram_console_read_old,
-};
-
-static int __init ram_console_late_init(void)
-{
- struct proc_dir_entry *entry;
-
- if (ram_console_old_log == NULL)
- return 0;
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT
- ram_console_old_log = kmalloc(ram_console_old_log_size, GFP_KERNEL);
- if (ram_console_old_log == NULL) {
- printk(KERN_ERR
- "ram_console: failed to allocate buffer for old log\n");
- ram_console_old_log_size = 0;
- return 0;
- }
- memcpy(ram_console_old_log,
- ram_console_old_log_init_buffer, ram_console_old_log_size);
-#endif
- entry = create_proc_entry("last_kmsg", S_IFREG | S_IRUGO, NULL);
- if (!entry) {
- printk(KERN_ERR "ram_console: failed to create proc entry\n");
- kfree(ram_console_old_log);
- ram_console_old_log = NULL;
- return 0;
- }
-
- entry->proc_fops = &ram_console_file_ops;
- entry->size = ram_console_old_log_size;
- return 0;
-}
-
-#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT
-console_initcall(ram_console_early_init);
-#else
-module_init(ram_console_module_init);
-#endif
-late_initcall(ram_console_late_init);
-
diff --git a/drivers/staging/android/timed_gpio.c b/drivers/staging/android/timed_gpio.c
deleted file mode 100644
index be7cdaa..0000000
--- a/drivers/staging/android/timed_gpio.c
+++ /dev/null
@@ -1,166 +0,0 @@
-/* drivers/misc/timed_gpio.c
- *
- * Copyright (C) 2008 Google, Inc.
- * Author: Mike Lockwood <lockwood@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/hrtimer.h>
-#include <linux/err.h>
-#include <linux/gpio.h>
-
-#include "timed_output.h"
-#include "timed_gpio.h"
-
-
-struct timed_gpio_data {
- struct timed_output_dev dev;
- struct hrtimer timer;
- spinlock_t lock;
- unsigned gpio;
- int max_timeout;
- u8 active_low;
-};
-
-static enum hrtimer_restart gpio_timer_func(struct hrtimer *timer)
-{
- struct timed_gpio_data *data =
- container_of(timer, struct timed_gpio_data, timer);
-
- gpio_direction_output(data->gpio, data->active_low ? 1 : 0);
- return HRTIMER_NORESTART;
-}
-
-static int gpio_get_time(struct timed_output_dev *dev)
-{
- struct timed_gpio_data *data =
- container_of(dev, struct timed_gpio_data, dev);
-
- if (hrtimer_active(&data->timer)) {
- ktime_t r = hrtimer_get_remaining(&data->timer);
- struct timeval t = ktime_to_timeval(r);
- return t.tv_sec * 1000 + t.tv_usec / 1000;
- } else
- return 0;
-}
-
-static void gpio_enable(struct timed_output_dev *dev, int value)
-{
- struct timed_gpio_data *data =
- container_of(dev, struct timed_gpio_data, dev);
- unsigned long flags;
-
- spin_lock_irqsave(&data->lock, flags);
-
- /* cancel previous timer and set GPIO according to value */
- hrtimer_cancel(&data->timer);
- gpio_direction_output(data->gpio, data->active_low ? !value : !!value);
-
- if (value > 0) {
- if (value > data->max_timeout)
- value = data->max_timeout;
-
- hrtimer_start(&data->timer,
- ktime_set(value / 1000, (value % 1000) * 1000000),
- HRTIMER_MODE_REL);
- }
-
- spin_unlock_irqrestore(&data->lock, flags);
-}
-
-static int timed_gpio_probe(struct platform_device *pdev)
-{
- struct timed_gpio_platform_data *pdata = pdev->dev.platform_data;
- struct timed_gpio *cur_gpio;
- struct timed_gpio_data *gpio_data, *gpio_dat;
- int i, j, ret = 0;
-
- if (!pdata)
- return -EBUSY;
-
- gpio_data = kzalloc(sizeof(struct timed_gpio_data) * pdata->num_gpios,
- GFP_KERNEL);
- if (!gpio_data)
- return -ENOMEM;
-
- for (i = 0; i < pdata->num_gpios; i++) {
- cur_gpio = &pdata->gpios[i];
- gpio_dat = &gpio_data[i];
-
- hrtimer_init(&gpio_dat->timer, CLOCK_MONOTONIC,
- HRTIMER_MODE_REL);
- gpio_dat->timer.function = gpio_timer_func;
- spin_lock_init(&gpio_dat->lock);
-
- gpio_dat->dev.name = cur_gpio->name;
- gpio_dat->dev.get_time = gpio_get_time;
- gpio_dat->dev.enable = gpio_enable;
- ret = timed_output_dev_register(&gpio_dat->dev);
- if (ret < 0) {
- for (j = 0; j < i; j++)
- timed_output_dev_unregister(&gpio_data[i].dev);
- kfree(gpio_data);
- return ret;
- }
-
- gpio_dat->gpio = cur_gpio->gpio;
- gpio_dat->max_timeout = cur_gpio->max_timeout;
- gpio_dat->active_low = cur_gpio->active_low;
- gpio_direction_output(gpio_dat->gpio, gpio_dat->active_low);
- }
-
- platform_set_drvdata(pdev, gpio_data);
-
- return 0;
-}
-
-static int timed_gpio_remove(struct platform_device *pdev)
-{
- struct timed_gpio_platform_data *pdata = pdev->dev.platform_data;
- struct timed_gpio_data *gpio_data = platform_get_drvdata(pdev);
- int i;
-
- for (i = 0; i < pdata->num_gpios; i++)
- timed_output_dev_unregister(&gpio_data[i].dev);
-
- kfree(gpio_data);
-
- return 0;
-}
-
-static struct platform_driver timed_gpio_driver = {
- .probe = timed_gpio_probe,
- .remove = timed_gpio_remove,
- .driver = {
- .name = TIMED_GPIO_NAME,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init timed_gpio_init(void)
-{
- return platform_driver_register(&timed_gpio_driver);
-}
-
-static void __exit timed_gpio_exit(void)
-{
- platform_driver_unregister(&timed_gpio_driver);
-}
-
-module_init(timed_gpio_init);
-module_exit(timed_gpio_exit);
-
-MODULE_AUTHOR("Mike Lockwood <lockwood@android.com>");
-MODULE_DESCRIPTION("timed gpio driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/staging/android/timed_gpio.h b/drivers/staging/android/timed_gpio.h
deleted file mode 100644
index a0e15f8..0000000
--- a/drivers/staging/android/timed_gpio.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/* include/linux/timed_gpio.h
- *
- * Copyright (C) 2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
-*/
-
-#ifndef _LINUX_TIMED_GPIO_H
-#define _LINUX_TIMED_GPIO_H
-
-#define TIMED_GPIO_NAME "timed-gpio"
-
-struct timed_gpio {
- const char *name;
- unsigned gpio;
- int max_timeout;
- u8 active_low;
-};
-
-struct timed_gpio_platform_data {
- int num_gpios;
- struct timed_gpio *gpios;
-};
-
-#endif
diff --git a/drivers/staging/android/timed_output.c b/drivers/staging/android/timed_output.c
deleted file mode 100644
index 62e7918..0000000
--- a/drivers/staging/android/timed_output.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/* drivers/misc/timed_output.c
- *
- * Copyright (C) 2009 Google, Inc.
- * Author: Mike Lockwood <lockwood@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/device.h>
-#include <linux/fs.h>
-#include <linux/err.h>
-
-#include "timed_output.h"
-
-static struct class *timed_output_class;
-static atomic_t device_count;
-
-static ssize_t enable_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct timed_output_dev *tdev = dev_get_drvdata(dev);
- int remaining = tdev->get_time(tdev);
-
- return sprintf(buf, "%d\n", remaining);
-}
-
-static ssize_t enable_store(
- struct device *dev, struct device_attribute *attr,
- const char *buf, size_t size)
-{
- struct timed_output_dev *tdev = dev_get_drvdata(dev);
- int value;
-
- sscanf(buf, "%d", &value);
- tdev->enable(tdev, value);
-
- return size;
-}
-
-static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, enable_show, enable_store);
-
-static int create_timed_output_class(void)
-{
- if (!timed_output_class) {
- timed_output_class = class_create(THIS_MODULE, "timed_output");
- if (IS_ERR(timed_output_class))
- return PTR_ERR(timed_output_class);
- atomic_set(&device_count, 0);
- }
-
- return 0;
-}
-
-int timed_output_dev_register(struct timed_output_dev *tdev)
-{
- int ret;
-
- if (!tdev || !tdev->name || !tdev->enable || !tdev->get_time)
- return -EINVAL;
-
- ret = create_timed_output_class();
- if (ret < 0)
- return ret;
-
- tdev->index = atomic_inc_return(&device_count);
- tdev->dev = device_create(timed_output_class, NULL,
- MKDEV(0, tdev->index), NULL, tdev->name);
- if (IS_ERR(tdev->dev))
- return PTR_ERR(tdev->dev);
-
- ret = device_create_file(tdev->dev, &dev_attr_enable);
- if (ret < 0)
- goto err_create_file;
-
- dev_set_drvdata(tdev->dev, tdev);
- tdev->state = 0;
- return 0;
-
-err_create_file:
- device_destroy(timed_output_class, MKDEV(0, tdev->index));
- printk(KERN_ERR "timed_output: Failed to register driver %s\n",
- tdev->name);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(timed_output_dev_register);
-
-void timed_output_dev_unregister(struct timed_output_dev *tdev)
-{
- device_remove_file(tdev->dev, &dev_attr_enable);
- device_destroy(timed_output_class, MKDEV(0, tdev->index));
- dev_set_drvdata(tdev->dev, NULL);
-}
-EXPORT_SYMBOL_GPL(timed_output_dev_unregister);
-
-static int __init timed_output_init(void)
-{
- return create_timed_output_class();
-}
-
-static void __exit timed_output_exit(void)
-{
- class_destroy(timed_output_class);
-}
-
-module_init(timed_output_init);
-module_exit(timed_output_exit);
-
-MODULE_AUTHOR("Mike Lockwood <lockwood@android.com>");
-MODULE_DESCRIPTION("timed output class driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/staging/android/timed_output.h b/drivers/staging/android/timed_output.h
deleted file mode 100644
index ec907ab..0000000
--- a/drivers/staging/android/timed_output.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/* include/linux/timed_output.h
- *
- * Copyright (C) 2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
-*/
-
-#ifndef _LINUX_TIMED_OUTPUT_H
-#define _LINUX_TIMED_OUTPUT_H
-
-struct timed_output_dev {
- const char *name;
-
- /* enable the output and set the timer */
- void (*enable)(struct timed_output_dev *sdev, int timeout);
-
- /* returns the current number of milliseconds remaining on the timer */
- int (*get_time)(struct timed_output_dev *sdev);
-
- /* private data */
- struct device *dev;
- int index;
- int state;
-};
-
-extern int timed_output_dev_register(struct timed_output_dev *dev);
-extern void timed_output_dev_unregister(struct timed_output_dev *dev);
-
-#endif
OpenPOWER on IntegriCloud