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 loff_t read_pos;
23 u64 version;
24 struct mutex lock;
25 const struct seq_operations *op;
26 void *private;
27};
28
29struct seq_operations {
30 void * (*start) (struct seq_file *m, loff_t *pos);
31 void (*stop) (struct seq_file *m, void *v);
32 void * (*next) (struct seq_file *m, void *v, loff_t *pos);
33 int (*show) (struct seq_file *m, void *v);
34};
35
36#define SEQ_SKIP 1
37
38char *mangle_path(char *s, char *p, char *esc);
39int seq_open(struct file *, const struct seq_operations *);
40ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
41loff_t seq_lseek(struct file *, loff_t, int);
42int seq_release(struct inode *, struct file *);
43int seq_escape(struct seq_file *, const char *, const char *);
44int seq_putc(struct seq_file *m, char c);
45int seq_puts(struct seq_file *m, const char *s);
46
47int seq_printf(struct seq_file *, const char *, ...)
48 __attribute__ ((format (printf,2,3)));
49
50int seq_path(struct seq_file *, struct path *, char *);
51int seq_dentry(struct seq_file *, struct dentry *, char *);
52int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
53 char *esc);
54int seq_bitmap(struct seq_file *m, const unsigned long *bits,
55 unsigned int nr_bits);
56static inline int seq_cpumask(struct seq_file *m, const struct cpumask *mask)
57{
58 return seq_bitmap(m, cpumask_bits(mask), nr_cpu_ids);
59}
60
61static inline int seq_nodemask(struct seq_file *m, nodemask_t *mask)
62{
63 return seq_bitmap(m, mask->bits, MAX_NUMNODES);
64}
65
66int seq_bitmap_list(struct seq_file *m, const unsigned long *bits,
67 unsigned int nr_bits);
68
69static inline int seq_cpumask_list(struct seq_file *m,
70 const struct cpumask *mask)
71{
72 return seq_bitmap_list(m, cpumask_bits(mask), nr_cpu_ids);
73}
74
75static inline int seq_nodemask_list(struct seq_file *m, nodemask_t *mask)
76{
77 return seq_bitmap_list(m, mask->bits, MAX_NUMNODES);
78}
79
80int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
81int single_release(struct inode *, struct file *);
82void *__seq_open_private(struct file *, const struct seq_operations *, int);
83int seq_open_private(struct file *, const struct seq_operations *, int);
84int seq_release_private(struct inode *, struct file *);
85
86#define SEQ_START_TOKEN ((void *)1)
87
88/*
89 * Helpers for iteration over list_head-s in seq_files
90 */
91
92extern struct list_head *seq_list_start(struct list_head *head,
93 loff_t pos);
94extern struct list_head *seq_list_start_head(struct list_head *head,
95 loff_t pos);
96extern struct list_head *seq_list_next(void *v, struct list_head *head,
97 loff_t *ppos);
98
99#endif