Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | /*
* 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 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_poll_table_t;
typedef struct cfs_param_file_ops {
struct module *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__ */
|