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 char *mangle_path(char *s, char *p, char *esc);
38 int seq_open(struct file *, const struct seq_operations *);
39 ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
40 loff_t seq_lseek(struct file *, loff_t, int);
41 int seq_release(struct inode *, struct file *);
42 int seq_escape(struct seq_file *, const char *, const char *);
43 int seq_putc(struct seq_file *m, char c);
44 int seq_puts(struct seq_file *m, const char *s);
46 int seq_printf(struct seq_file *, const char *, ...)
47 __attribute__ ((format (printf,2,3)));
49 int seq_path(struct seq_file *, struct path *, char *);
50 int seq_dentry(struct seq_file *, struct dentry *, char *);
51 int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
53 int seq_bitmap(struct seq_file *m, const unsigned long *bits,
54 unsigned int nr_bits);
55 static inline int seq_cpumask(struct seq_file *m, const struct cpumask *mask)
57 return seq_bitmap(m, mask->bits, nr_cpu_ids);
60 static inline int seq_nodemask(struct seq_file *m, nodemask_t *mask)
62 return seq_bitmap(m, mask->bits, MAX_NUMNODES);
65 int seq_bitmap_list(struct seq_file *m, unsigned long *bits,
66 unsigned int nr_bits);
68 static inline int seq_cpumask_list(struct seq_file *m, cpumask_t *mask)
70 return seq_bitmap_list(m, mask->bits, NR_CPUS);
73 static inline int seq_nodemask_list(struct seq_file *m, nodemask_t *mask)
75 return seq_bitmap_list(m, mask->bits, MAX_NUMNODES);
78 int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
79 int single_release(struct inode *, struct file *);
80 void *__seq_open_private(struct file *, const struct seq_operations *, int);
81 int seq_open_private(struct file *, const struct seq_operations *, int);
82 int seq_release_private(struct inode *, struct file *);
84 #define SEQ_START_TOKEN ((void *)1)
87 * Helpers for iteration over list_head-s in seq_files
90 extern struct list_head *seq_list_start(struct list_head *head,
92 extern struct list_head *seq_list_start_head(struct list_head *head,
94 extern struct list_head *seq_list_next(void *v, struct list_head *head,