Quelle  debugfs.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
 * Copyright (C) 2023 Intel Corporation
 * Copyright (C) 2012-2014 Intel Corporation
 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
 */
#define MVM_DEBUGFS_READ_FILE_OPS(name)     \
static const struct file_operations iwl_dbgfs_##name##_ops = {  \
 .read = iwl_dbgfs_##name##_read,    \
 .open = simple_open,      \
 .llseek = generic_file_llseek,     \
}

#define MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)  \
static ssize_t _iwl_dbgfs_##name##_write(struct file *file,  \
      const char __user *user_buf, \
      size_t count, loff_t *ppos) \
{         \
 argtype *arg = file->private_data;    \
 char buf[buflen] = {};      \
 size_t buf_size = min(count, sizeof(buf) -  1);   \
         \
 if (copy_from_user(buf, user_buf, buf_size))   \
  return -EFAULT;      \
         \
 return iwl_dbgfs_##name##_write(arg, buf, buf_size, ppos); \
}         \

#define _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen, argtype)  \
MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)   \
static const struct file_operations iwl_dbgfs_##name##_ops = {  \
 .write = _iwl_dbgfs_##name##_write,    \
 .read = iwl_dbgfs_##name##_read,    \
 .open = simple_open,      \
 .llseek = generic_file_llseek,     \
};

#define _MVM_DEBUGFS_WRITE_FILE_OPS(name, buflen, argtype)  \
MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)   \
static const struct file_operations iwl_dbgfs_##name##_ops = {  \
 .write = _iwl_dbgfs_##name##_write,    \
 .open = simple_open,      \
 .llseek = generic_file_llseek,     \
};