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 seq_bitmap_list(struct seq_file *m, unsigned long *bits,
64 unsigned int nr_bits);
66 static inline int seq_cpumask_list(struct seq_file *m, cpumask_t *mask)
68 return seq_bitmap_list(m, mask->bits, NR_CPUS);
71 static inline int seq_nodemask_list(struct seq_file *m, nodemask_t *mask)
73 return seq_bitmap_list(m, mask->bits, MAX_NUMNODES);
76 int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
77 int single_release(struct inode *, struct file *);
78 void *__seq_open_private(struct file *, const struct seq_operations *, int);
79 int seq_open_private(struct file *, const struct seq_operations *, int);
80 int seq_release_private(struct inode *, struct file *);
82 #define SEQ_START_TOKEN ((void *)1)
85 * Helpers for iteration over list_head-s in seq_files
88 extern struct list_head *seq_list_start(struct list_head *head,
90 extern struct list_head *seq_list_start_head(struct list_head *head,
92 extern struct list_head *seq_list_next(void *v, struct list_head *head,