static void print_io_dump(int rw, size_t bytes)
{
unsigned long last_jiffies;
int reset = 0;
if (get_tamper_sf() == 1)
return;
if (!strcmp(current->comm, "sdcard"))
return;
last_jiffies = current->ioac.last_jiffies;
if ((current->ioac.last_jiffies == 0) ||
time_after(jiffies, last_jiffies + 5 * HZ)) {
current->ioac.last_jiffies = jiffies;
current->ioac.acc_write_bytes = (rw == WRITE) ? bytes : 0;
current->ioac.acc_read_bytes = (rw == READ) ? bytes : 0;
return;
}
if (rw == WRITE)
current->ioac.acc_write_bytes += bytes;
else
current->ioac.acc_read_bytes += bytes;
if (time_after(jiffies, last_jiffies + HZ)) {
if (current->ioac.acc_write_bytes > WRITE_THRESHOLD) {
pr_info("FS Statistics: %s(pid %d) write %llu bytes in %u ms\n",
current->comm, current->pid,
current->ioac.acc_write_bytes,
jiffies_to_msecs(jiffies - last_jiffies));
reset = 1;
}
if (current->ioac.acc_read_bytes > READ_THRESHOLD) {
pr_info("FS Statistics: %s(pid %d) read %llu bytes in %u ms\n",
current->comm, current->pid,
current->ioac.acc_read_bytes,
jiffies_to_msecs(jiffies - last_jiffies));
reset = 1;
}
if (reset) {
current->ioac.last_jiffies = 0;
current->ioac.acc_write_bytes = 0;
current->ioac.acc_read_bytes = 0;
}
}
return;
}
SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf,
size_t, count)
{
struct file *file;
ssize_t ret = -EBADF;
int fput_needed;
#ifdef CONFIG_DIRTY_SYSTEM_DETECTOR
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
struct mount *mnt;
#else
struct vfsmount *mnt;
#endif
#endif
file = fget_light(fd, &fput_needed);
#ifdef CONFIG_DIRTY_SYSTEM_DETECTOR
if (!get_tamper_sf() && file != NULL) {
if (board_mfg_mode() != 2
&& strcmp("htcunzip", current->comm)) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
mnt = real_mount(file->f_path.mnt);
#else
mnt = file->f_path.mnt;
#endif
if (!strcmp("system", mnt->mnt_mountpoint->d_name.name)) {
printk("%s to /system partition: file(%s)\n", __func__, file->f_path.dentry->d_name.name);
mark_system_dirty(file->f_path.dentry->d_name.name);
}
}
}
#endif
if (file) {
loff_t pos = file_pos_read(file);
ret = vfs_write(file, buf, count, &pos);
file_pos_write(file, pos);
fput_light(file, fput_needed);
}
return ret;
}
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 defined(CONFIG_DEBUG_LAST_BLDR_LOG) && defined(CONFIG_DEBUG_BLDR_LOG)
loff_t bootloader_pos;
loff_t ram_console_pos;
static char *last_bldr_ptr;
static unsigned long last_bldr_size;
static char *bldr_ptr;
static unsigned long bldr_size;
if(!get_tamper_sf())
{
last_bldr_ptr=last_bldr_log;
last_bldr_size=last_bldr_log_size;
bldr_ptr=bldr_log;
bldr_size=bldr_log_size;
}
else
{
last_bldr_ptr=last_bldr_log_buf;
last_bldr_size=last_bldr_log_buf_size;
bldr_ptr=bldr_log_buf;
bldr_size=bldr_log_buf_size;
}
if (pos >= last_bldr_size + ram_console_old_log_size + bldr_size)
return 0;
if (pos >= last_bldr_size + ram_console_old_log_size) {
bootloader_pos = pos - (last_bldr_size + ram_console_old_log_size);
count = min(len, (size_t)(bldr_size - bootloader_pos));
if (copy_to_user(buf, bldr_ptr + bootloader_pos, count))
return -EFAULT;
*offset += count;
return count;
}
if (pos >= last_bldr_size) {
ram_console_pos = pos - last_bldr_size;
count = min(len, (size_t)(ram_console_old_log_size - ram_console_pos));
if (copy_to_user(buf, ram_console_old_log + ram_console_pos, count))
return -EFAULT;
*offset += count;
return count;
}
count = min(len, (size_t)(last_bldr_size - pos));
if (copy_to_user(buf, last_bldr_ptr + pos, count))
return -EFAULT;
*offset += count;
return count;
#elif defined(CONFIG_DEBUG_LAST_BLDR_LOG)
loff_t ram_console_pos;
static char *last_bldr_ptr;
static unsigned long last_bldr_size;
if(!get_tamper_sf())
{
last_bldr_ptr=last_bldr_log;
last_bldr_size=last_bldr_log_size;
}
else
{
last_bldr_ptr=last_bldr_log_buf;
last_bldr_size=last_bldr_log_buf_size;
}
if (pos >= last_bldr_size + ram_console_old_log_size)
return 0;
if (pos >= last_bldr_size) {
ram_console_pos = pos - last_bldr_size;
count = min(len, (size_t)(ram_console_old_log_size - ram_console_pos));
if (copy_to_user(buf, ram_console_old_log + ram_console_pos, count))
return -EFAULT;
*offset += count;
return count;
}
count = min(len, (size_t)(last_bldr_size - pos));
if (copy_to_user(buf, last_bldr_ptr + pos, count))
return -EFAULT;
*offset += count;
return count;
#elif defined(CONFIG_DEBUG_BLDR_LOG)
loff_t bootloader_pos;
static char *bldr_ptr;
static unsigned long bldr_size;
if(!get_tamper_sf())
{
bldr_ptr=bldr_log;
bldr_size=bldr_log_size;
}
else
{
bldr_ptr=bldr_log_buf;
bldr_size=bldr_log_buf_size;
}
if (pos >= ram_console_old_log_size + bldr_size)
return 0;
if (pos >= ram_console_old_log_size) {
bootloader_pos = pos - ram_console_old_log_size;
count = min(len, (size_t)(bldr_size - bootloader_pos));
if (copy_to_user(buf, bldr_ptr + bootloader_pos, count))
return -EFAULT;
*offset += count;
return count;
}
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;
#else
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;
#endif
}
SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf,
size_t, count)
{
struct file *file;
ssize_t ret = -EBADF;
int fput_needed;
#ifdef CONFIG_DIRTY_SYSTEM_DETECTOR
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
struct mount *mnt;
#else
struct vfsmount *mnt;
#endif
#endif
file = fget_light(fd, &fput_needed);
#ifdef CONFIG_DIRTY_SYSTEM_DETECTOR
if (!get_tamper_sf() && file != NULL) {
if (board_mfg_mode() != 2
&& strcmp("htcunzip", current->comm)) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
mnt = real_mount(file->f_path.mnt);
#else
mnt = file->f_path.mnt;
#endif
if (!strcmp("system", mnt->mnt_mountpoint->d_name.name)) {
printk("%s to /system partition: file(%s)\n", __func__, file->f_path.dentry->d_name.name);
mark_system_dirty(file->f_path.dentry->d_name.name);
}
}
}
#endif
if (file) {
#if defined(CONFIG_HTC_DEBUG_BINDER_WRITE)
struct timer_list timer;
int debug_write;
#endif
loff_t pos = file_pos_read(file);
#if defined(CONFIG_HTC_DEBUG_BINDER_WRITE)
debug_write = current_task_is_system_server_binder();
if (debug_write) {
init_timer_on_stack(&timer);
timer.function = vfs_write_timeout;
timer.expires = jiffies + HZ * WRITE_TIMEOUT_VALUE;
timer.data = (unsigned long) current;
add_timer(&timer);
}
#endif
ret = vfs_write(file, buf, count, &pos);
#if defined(CONFIG_HTC_DEBUG_BINDER_WRITE)
if (debug_write) {
del_timer_sync(&timer);
destroy_timer_on_stack(&timer);
if (ret < 0 && file && file->f_op) {
pr_info("%s: %s (%d:%d) ret: %d, write: %pf, aio_write: %pf\n",
__func__, current->comm, current->tgid, current->pid, ret,
file->f_op->write, file->f_op->aio_write);
}
}
#endif
file_pos_write(file, pos);
fput_light(file, fput_needed);
}
return ret;
}
void bldr_log_parser(const char *bldr_log, char *bldr_log_buf, unsigned long bldr_log_size, unsigned long *bldr_log_buf_size)
{
int i,j,k;
int last_index=0;
int line_length=0;
const char *bldr_log_ptr=bldr_log;
char *bldr_log_buf_ptr=bldr_log_buf;
const char *terminal_pattern="\r\n";
const char *specific_pattern="[HBOOT]";
int terminal_pattern_len=strlen(terminal_pattern);
int specific_pattern_len=strlen(specific_pattern);
if (!get_tamper_sf()) {
memcpy(bldr_log_buf, bldr_log, bldr_log_size);
*bldr_log_buf_size = bldr_log_size;
printk(KERN_INFO "[K] bldr_log_parser: size %ld\n", *bldr_log_buf_size);
return;
}
for(i=0; i<bldr_log_size; i++)
{
bool terminal_match = true;
if((i+terminal_pattern_len) > bldr_log_size)
break;
for(j=0; j < terminal_pattern_len; j++)
{
if(bldr_log[i+j] != terminal_pattern[j])
{
terminal_match = false;
break;
}
}
if(terminal_match)
{
bool specific_match = true;
int specific_pattern_start = i-specific_pattern_len;
line_length = i+terminal_pattern_len-last_index;
for(k=0; k < specific_pattern_len; k++)
{
if(bldr_log[specific_pattern_start+k] != specific_pattern[k])
{
specific_match = false;
break;
}
}
if(specific_match)
{
memcpy(bldr_log_buf_ptr, bldr_log_ptr, line_length-terminal_pattern_len-specific_pattern_len);
bldr_log_buf_ptr +=(line_length-terminal_pattern_len-specific_pattern_len);
memcpy(bldr_log_buf_ptr, terminal_pattern, terminal_pattern_len);
bldr_log_buf_ptr +=terminal_pattern_len;
}
bldr_log_ptr+=line_length;
last_index=i+terminal_pattern_len;
}
}
*bldr_log_buf_size = bldr_log_buf_ptr - bldr_log_buf;
printk(KERN_INFO "[K] bldr_log_parser: size %ld\n", *bldr_log_buf_size);
}