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/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* 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 version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* API and structure definitions for params_tree.
*
* Author: LiuYing <emoly.liu@oracle.com>
*/
#ifndef __PARAMS_TREE_H__
#define __PARAMS_TREE_H__
#include <linux/libcfs/libcfs.h>
#undef LPROCFS
#if defined(CONFIG_PROC_FS)
# define LPROCFS
#endif
#ifdef LPROCFS
typedef struct file cfs_param_file_t;
typedef struct inode cfs_inode_t;
typedef struct proc_inode cfs_proc_inode_t;
typedef struct seq_file cfs_seq_file_t;
typedef struct seq_operations cfs_seq_ops_t;
typedef struct file_operations cfs_param_file_ops_t;
typedef module_t *cfs_param_module_t;
typedef struct proc_dir_entry cfs_param_dentry_t;
typedef struct poll_table_struct cfs_poll_table_t;
#define CFS_PARAM_MODULE THIS_MODULE
#define cfs_file_private(file) (file->private_data)
#define cfs_dentry_data(dentry) (dentry->data)
#define cfs_proc_inode_pde(proc_inode) (proc_inode->pde)
#define cfs_proc_inode(proc_inode) (proc_inode->vfs_inode)
#define cfs_seq_read_common seq_read
#define cfs_seq_lseek_common seq_lseek
#define cfs_seq_private(seq) (seq->private)
#define cfs_seq_printf(seq, format, ...) seq_printf(seq, format, \
## __VA_ARGS__)
#define cfs_seq_release(inode, file) seq_release(inode, file)
#define cfs_seq_puts(seq, s) seq_puts(seq, s)
#define cfs_seq_putc(seq, s) seq_putc(seq, s)
#define cfs_seq_read(file, buf, count, ppos, rc) (rc = seq_read(file, buf, \
count, ppos))
#define cfs_seq_open(file, ops, rc) (rc = seq_open(file, ops))
#else /* !LPROCFS */
typedef struct cfs_params_file {
void *param_private;
loff_t param_pos;
unsigned int param_flags;
} cfs_param_file_t;
typedef struct cfs_param_inode {
void *param_private;
} cfs_inode_t;
typedef struct cfs_param_dentry {
void *param_data;
} cfs_param_dentry_t;
typedef struct cfs_proc_inode {
cfs_param_dentry_t *param_pde;
cfs_inode_t param_inode;
} cfs_proc_inode_t;
struct cfs_seq_operations;
typedef struct cfs_seq_file {
char *buf;
size_t size;
size_t from;
size_t count;
loff_t index;
loff_t version;
struct mutex lock;
struct cfs_seq_operations *op;
void *private;
} cfs_seq_file_t;
typedef struct cfs_seq_operations {
void *(*start) (cfs_seq_file_t *m, loff_t *pos);
void (*stop) (cfs_seq_file_t *m, void *v);
void *(*next) (cfs_seq_file_t *m, void *v, loff_t *pos);
int (*show) (cfs_seq_file_t *m, void *v);
} cfs_seq_ops_t;
typedef void *cfs_param_module_t;
typedef void *cfs_poll_table_t;
typedef struct cfs_param_file_ops {
cfs_param_module_t owner;
int (*open) (cfs_inode_t *, struct file *);
loff_t (*llseek)(struct file *, loff_t, int);
int (*release) (cfs_inode_t *, cfs_param_file_t *);
unsigned int (*poll) (struct file *, cfs_poll_table_t *);
ssize_t (*write) (struct file *, const char *, size_t, loff_t *);
ssize_t (*read)(struct file *, char *, size_t, loff_t *);
} cfs_param_file_ops_t;
typedef cfs_param_file_ops_t *cfs_lproc_filep_t;
static inline cfs_proc_inode_t *FAKE_PROC_I(const cfs_inode_t *inode)
{
return container_of(inode, cfs_proc_inode_t, param_inode);
}
#define CFS_PARAM_MODULE NULL
#define cfs_file_private(file) (file->param_private)
#define cfs_dentry_data(dentry) (dentry->param_data)
#define cfs_proc_inode(proc_inode) (proc_inode->param_inode)
#define cfs_proc_inode_pde(proc_inode) (proc_inode->param_pde)
#define cfs_seq_read_common NULL
#define cfs_seq_lseek_common NULL
#define cfs_seq_private(seq) (seq->private)
#define cfs_seq_read(file, buf, count, ppos, rc) do {} while(0)
#define cfs_seq_open(file, ops, rc) \
do { \
cfs_seq_file_t *p = cfs_file_private(file); \
if (!p) { \
LIBCFS_ALLOC(p, sizeof(*p)); \
if (!p) { \
rc = -ENOMEM; \
break; \
} \
cfs_file_private(file) = p; \
} \
memset(p, 0, sizeof(*p)); \
p->op = ops; \
rc = 0; \
} while(0)
#endif /* LPROCFS */
/* XXX: params_tree APIs */
#endif /* __PARAMS_TREE_H__ */
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