1 #ifndef _LINUX_SEQ_FILE_H
2 #define _LINUX_SEQ_FILE_H
4 #include <linux/types.h>
5 #include <linux/string.h>
6 #include <linux/mutex.h>
7 #include <linux/cpumask.h>
8 #include <linux/nodemask.h>
10 struct seq_operations
;
24 const struct seq_operations
*op
;
28 struct seq_operations
{
29 void * (*start
) (struct seq_file
*m
, loff_t
*pos
);
30 void (*stop
) (struct seq_file
*m
, void *v
);
31 void * (*next
) (struct seq_file
*m
, void *v
, loff_t
*pos
);
32 int (*show
) (struct seq_file
*m
, void *v
);
37 int seq_open(struct file
*, const struct seq_operations
*);
38 ssize_t
seq_read(struct file
*, char __user
*, size_t, loff_t
*);
39 loff_t
seq_lseek(struct file
*, loff_t
, int);
40 int seq_release(struct inode
*, struct file
*);
41 int seq_escape(struct seq_file
*, const char *, const char *);
42 int seq_putc(struct seq_file
*m
, char c
);
43 int seq_puts(struct seq_file
*m
, const char *s
);
45 int seq_printf(struct seq_file
*, const char *, ...)
46 __attribute__ ((format (printf
,2,3)));
48 int seq_path(struct seq_file
*, struct path
*, char *);
49 int seq_dentry(struct seq_file
*, struct dentry
*, char *);
50 int seq_path_root(struct seq_file
*m
, struct path
*path
, struct path
*root
,
52 int seq_bitmap(struct seq_file
*m
, unsigned long *bits
, unsigned int nr_bits
);
53 static inline int seq_cpumask(struct seq_file
*m
, cpumask_t
*mask
)
55 return seq_bitmap(m
, mask
->bits
, NR_CPUS
);
58 static inline int seq_nodemask(struct seq_file
*m
, nodemask_t
*mask
)
60 return seq_bitmap(m
, mask
->bits
, MAX_NUMNODES
);
63 int single_open(struct file
*, int (*)(struct seq_file
*, void *), void *);
64 int single_release(struct inode
*, struct file
*);
65 void *__seq_open_private(struct file
*, const struct seq_operations
*, int);
66 int seq_open_private(struct file
*, const struct seq_operations
*, int);
67 int seq_release_private(struct inode
*, struct file
*);
69 #define SEQ_START_TOKEN ((void *)1)
72 * Helpers for iteration over list_head-s in seq_files
75 extern struct list_head
*seq_list_start(struct list_head
*head
,
77 extern struct list_head
*seq_list_start_head(struct list_head
*head
,
79 extern struct list_head
*seq_list_next(void *v
, struct list_head
*head
,