C++ (Cpp) tpmd_handle_command Examples

Example #1

File: tpmd_dev.c Project: PeterHuewe/tpm-emulator

static ssize_t tpm_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
  debug("%s(%zd)", __FUNCTION__, count);

  if (count > sizeof(req_buf))
    return -EFAULT;

  down(&tpm_mutex);
  *ppos = 0;
  if (tpm_response.data != NULL) {
    kfree(tpm_response.data);
    tpm_response.data = NULL;
  }

  if (copy_from_user(req_buf, buf, count)) {
    up(&tpm_mutex);
    return -EFAULT;
  }

  if (tpmd_handle_command(req_buf, count) != 0) {
    count = -EILSEQ;
    tpm_response.data = NULL;
  }
  up(&tpm_mutex);
  return count;
}

Example #2

File: tpmd_dev.c Project: Aorimn/tpm-emulator

static long tpm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
  debug("%s(%d, %p)", __FUNCTION__, cmd, (char*)arg);
  if (cmd == TPMIOC_TRANSMIT) {
    uint8_t *ptr = (uint8_t*)(arg + 2);
    uint32_t count = ((uint32_t)ptr[0] << 24) | ((uint32_t)ptr[1] << 16) |
                     ((uint32_t)ptr[2] <<  8) | (uint32_t)ptr[3];
    down(&tpm_mutex);
    if (tpm_response.data != NULL) {
      kfree(tpm_response.data);
      tpm_response.data = NULL;
    }
    if (tpmd_handle_command((char*)arg, count) == 0) {
      tpm_response.size -= copy_to_user((char*)arg, tpm_response.data, tpm_response.size);
      kfree(tpm_response.data);
      tpm_response.data = NULL;
    } else {
      tpm_response.size = 0;
      tpm_response.data = NULL;
    }
    up(&tpm_mutex);
    return tpm_response.size;
  }
  return -1;
}

Example #3

File: tpmd_dev.c Project: 325116067/semc-qsd8x50

static ssize_t tpm_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
{
  debug("%s(%zd)", __FUNCTION__, count);
  down(&tpm_mutex);
  *ppos = 0;
  if (tpm_response.data != NULL) {
    kfree(tpm_response.data);
    tpm_response.data = NULL;
  }
  if (tpmd_handle_command(buf, count) != 0) { 
    count = -EILSEQ;
    tpm_response.data = NULL;
  }
  up(&tpm_mutex);
  return count;
}

Example #4

File: tpmd_dev.c Project: 325116067/semc-qsd8x50

static int tpm_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
  debug("%s(%d, %p)", __FUNCTION__, cmd, (char*)arg);
  if (cmd == TPMIOC_TRANSMIT) {
    uint32_t count = ntohl(*(uint32_t*)(arg + 2));
    down(&tpm_mutex);
    if (tpm_response.data != NULL) {
      kfree(tpm_response.data);
      tpm_response.data = NULL;
    }
    if (tpmd_handle_command((char*)arg, count) == 0) {
      tpm_response.size -= copy_to_user((char*)arg, tpm_response.data, tpm_response.size);
      kfree(tpm_response.data);
      tpm_response.data = NULL;
    } else {
      tpm_response.size = 0;
      tpm_response.data = NULL;
    }
    up(&tpm_mutex);
    return tpm_response.size;
  }
  return -1;
}

Example #5

File: tpmd_dev.c Project: PeterHuewe/tpm-emulator

static long tpm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
  debug("%s(%d, %p)", __FUNCTION__, cmd, (char*)arg);
  if (cmd == TPMIOC_TRANSMIT) {
    uint32_t count;

    if (get_user(count, (uint32_t __user *)(arg+2)))
      return -EFAULT;

    count = be32_to_cpu(count);
    if (count > sizeof(req_buf))
      return -EFAULT;

    down(&tpm_mutex);
    if (copy_from_user(req_buf, (void __user *)arg, count)) {
      up(&tpm_mutex);
      return -EFAULT;
    }

    if (tpm_response.data != NULL) {
      kfree(tpm_response.data);
      tpm_response.data = NULL;
    }
    if (tpmd_handle_command(req_buf, count) == 0) {
      tpm_response.size -= copy_to_user((char*)arg, tpm_response.data, tpm_response.size);
      kfree(tpm_response.data);
      tpm_response.data = NULL;
    } else {
      tpm_response.size = 0;
      tpm_response.data = NULL;
    }
    up(&tpm_mutex);
    return tpm_response.size;
  }
  return -1;
}