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36 * API and structure definitions for params_tree.
38 * Author: LiuYing <emoly.liu@oracle.com>
40 #ifndef __PARAMS_TREE_H__
41 #define __PARAMS_TREE_H__
43 #include <linux/libcfs/libcfs.h>
46 #if defined(CONFIG_PROC_FS)
51 typedef struct file cfs_param_file_t;
52 typedef struct inode cfs_inode_t;
53 typedef struct proc_inode cfs_proc_inode_t;
54 typedef struct seq_file cfs_seq_file_t;
55 typedef struct seq_operations cfs_seq_ops_t;
56 typedef struct file_operations cfs_param_file_ops_t;
57 typedef struct proc_dir_entry cfs_param_dentry_t;
58 typedef struct poll_table_struct cfs_poll_table_t;
59 #define CFS_PARAM_MODULE THIS_MODULE
60 #define cfs_file_private(file) (file->private_data)
61 #define cfs_dentry_data(dentry) (dentry->data)
62 #define cfs_proc_inode_pde(proc_inode) (proc_inode->pde)
63 #define cfs_proc_inode(proc_inode) (proc_inode->vfs_inode)
64 #define cfs_seq_read_common seq_read
65 #define cfs_seq_lseek_common seq_lseek
66 #define cfs_seq_private(seq) (seq->private)
67 #define cfs_seq_printf(seq, format, ...) seq_printf(seq, format, \
69 #define cfs_seq_release(inode, file) seq_release(inode, file)
70 #define cfs_seq_puts(seq, s) seq_puts(seq, s)
71 #define cfs_seq_putc(seq, s) seq_putc(seq, s)
72 #define cfs_seq_read(file, buf, count, ppos, rc) (rc = seq_read(file, buf, \
74 #define cfs_seq_open(file, ops, rc) (rc = seq_open(file, ops))
78 typedef struct cfs_params_file {
81 unsigned int param_flags;
84 typedef struct cfs_param_inode {
88 typedef struct cfs_param_dentry {
92 typedef struct cfs_proc_inode {
93 cfs_param_dentry_t *param_pde;
94 cfs_inode_t param_inode;
97 struct cfs_seq_operations;
98 typedef struct cfs_seq_file {
106 struct cfs_seq_operations *op;
110 typedef struct cfs_seq_operations {
111 void *(*start) (cfs_seq_file_t *m, loff_t *pos);
112 void (*stop) (cfs_seq_file_t *m, void *v);
113 void *(*next) (cfs_seq_file_t *m, void *v, loff_t *pos);
114 int (*show) (cfs_seq_file_t *m, void *v);
117 typedef void *cfs_poll_table_t;
119 typedef struct cfs_param_file_ops {
120 struct module *owner;
121 int (*open) (cfs_inode_t *, struct file *);
122 loff_t (*llseek)(struct file *, loff_t, int);
123 int (*release) (cfs_inode_t *, cfs_param_file_t *);
124 unsigned int (*poll) (struct file *, cfs_poll_table_t *);
125 ssize_t (*write) (struct file *, const char *, size_t, loff_t *);
126 ssize_t (*read)(struct file *, char *, size_t, loff_t *);
127 } cfs_param_file_ops_t;
128 typedef cfs_param_file_ops_t *cfs_lproc_filep_t;
130 static inline cfs_proc_inode_t *FAKE_PROC_I(const cfs_inode_t *inode)
132 return container_of(inode, cfs_proc_inode_t, param_inode);
135 #define CFS_PARAM_MODULE NULL
136 #define cfs_file_private(file) (file->param_private)
137 #define cfs_dentry_data(dentry) (dentry->param_data)
138 #define cfs_proc_inode(proc_inode) (proc_inode->param_inode)
139 #define cfs_proc_inode_pde(proc_inode) (proc_inode->param_pde)
140 #define cfs_seq_read_common NULL
141 #define cfs_seq_lseek_common NULL
142 #define cfs_seq_private(seq) (seq->private)
143 #define cfs_seq_read(file, buf, count, ppos, rc) do {} while(0)
144 #define cfs_seq_open(file, ops, rc) \
146 cfs_seq_file_t *p = cfs_file_private(file); \
148 LIBCFS_ALLOC(p, sizeof(*p)); \
153 cfs_file_private(file) = p; \
155 memset(p, 0, sizeof(*p)); \
162 /* XXX: params_tree APIs */
164 #endif /* __PARAMS_TREE_H__ */