Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef _LINUX_SEQ_FILE_H
2#define _LINUX_SEQ_FILE_H
3
4#include <linux/types.h>
5#include <linux/string.h>
6#include <linux/mutex.h>
7
8struct seq_operations;
9struct file;
10struct path;
11struct inode;
12struct dentry;
13
14struct seq_file {
15 char *buf;
16 size_t size;
17 size_t from;
18 size_t count;
19 loff_t index;
20 u64 version;
21 struct mutex lock;
22 const struct seq_operations *op;
23 void *private;
24};
25
26struct seq_operations {
27 void * (*start) (struct seq_file *m, loff_t *pos);
28 void (*stop) (struct seq_file *m, void *v);
29 void * (*next) (struct seq_file *m, void *v, loff_t *pos);
30 int (*show) (struct seq_file *m, void *v);
31};
32
33#define SEQ_SKIP 1
34
35int seq_open(struct file *, const struct seq_operations *);
36ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
37loff_t seq_lseek(struct file *, loff_t, int);
38int seq_release(struct inode *, struct file *);
39int seq_escape(struct seq_file *, const char *, const char *);
40int seq_putc(struct seq_file *m, char c);
41int seq_puts(struct seq_file *m, const char *s);
42
43int seq_printf(struct seq_file *, const char *, ...)
44 __attribute__ ((format (printf,2,3)));
45
46int seq_path(struct seq_file *, struct path *, char *);
47int seq_dentry(struct seq_file *, struct dentry *, char *);
48int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
49 char *esc);
50
51int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
52int single_release(struct inode *, struct file *);
53void *__seq_open_private(struct file *, const struct seq_operations *, int);
54int seq_open_private(struct file *, const struct seq_operations *, int);
55int seq_release_private(struct inode *, struct file *);
56
57#define SEQ_START_TOKEN ((void *)1)
58
59/*
60 * Helpers for iteration over list_head-s in seq_files
61 */
62
63extern struct list_head *seq_list_start(struct list_head *head,
64 loff_t pos);
65extern struct list_head *seq_list_start_head(struct list_head *head,
66 loff_t pos);
67extern struct list_head *seq_list_next(void *v, struct list_head *head,
68 loff_t *ppos);
69
70#endif