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#include <linux/cpumask.h>
8#include <linux/nodemask.h>
9
10struct seq_operations;
11struct file;
12struct path;
13struct inode;
14struct dentry;
15
16struct seq_file {
17 char *buf;
18 size_t size;
19 size_t from;
20 size_t count;
21 loff_t index;
22 u64 version;
23 struct mutex lock;
24 const struct seq_operations *op;
25 void *private;
26};
27
28struct 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);
33};
34
35#define SEQ_SKIP 1
36
37int seq_open(struct file *, const struct seq_operations *);
38ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
39loff_t seq_lseek(struct file *, loff_t, int);
40int seq_release(struct inode *, struct file *);
41int seq_escape(struct seq_file *, const char *, const char *);
42int seq_putc(struct seq_file *m, char c);
43int seq_puts(struct seq_file *m, const char *s);
44
45int seq_printf(struct seq_file *, const char *, ...)
46 __attribute__ ((format (printf,2,3)));
47
48int seq_path(struct seq_file *, struct path *, char *);
49int seq_dentry(struct seq_file *, struct dentry *, char *);
50int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
51 char *esc);
52int seq_bitmap(struct seq_file *m, unsigned long *bits, unsigned int nr_bits);
53static inline int seq_cpumask(struct seq_file *m, cpumask_t *mask)
54{
55 return seq_bitmap(m, mask->bits, NR_CPUS);
56}
57
58static inline int seq_nodemask(struct seq_file *m, nodemask_t *mask)
59{
60 return seq_bitmap(m, mask->bits, MAX_NUMNODES);
61}
62
63int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
64int single_release(struct inode *, struct file *);
65void *__seq_open_private(struct file *, const struct seq_operations *, int);
66int seq_open_private(struct file *, const struct seq_operations *, int);
67int seq_release_private(struct inode *, struct file *);
68
69#define SEQ_START_TOKEN ((void *)1)
70
71/*
72 * Helpers for iteration over list_head-s in seq_files
73 */
74
75extern struct list_head *seq_list_start(struct list_head *head,
76 loff_t pos);
77extern struct list_head *seq_list_start_head(struct list_head *head,
78 loff_t pos);
79extern struct list_head *seq_list_next(void *v, struct list_head *head,
80 loff_t *ppos);
81
82#endif