Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _LINUX_SEQ_FILE_H |
2 | #define _LINUX_SEQ_FILE_H | |
3 | #ifdef __KERNEL__ | |
4 | ||
5 | #include <linux/types.h> | |
6 | #include <linux/string.h> | |
0ac1759a | 7 | #include <linux/mutex.h> |
1218854a | 8 | #include <net/net_namespace.h> |
1da177e4 LT |
9 | |
10 | struct seq_operations; | |
11 | struct file; | |
c32c2f63 | 12 | struct path; |
1da177e4 LT |
13 | struct inode; |
14 | ||
15 | struct seq_file { | |
16 | char *buf; | |
17 | size_t size; | |
18 | size_t from; | |
19 | size_t count; | |
20 | loff_t index; | |
2b47c361 | 21 | u64 version; |
0ac1759a | 22 | struct mutex lock; |
15ad7cdc | 23 | const struct seq_operations *op; |
1da177e4 LT |
24 | void *private; |
25 | }; | |
26 | ||
27 | struct seq_operations { | |
28 | void * (*start) (struct seq_file *m, loff_t *pos); | |
29 | void (*stop) (struct seq_file *m, void *v); | |
30 | void * (*next) (struct seq_file *m, void *v, loff_t *pos); | |
31 | int (*show) (struct seq_file *m, void *v); | |
32 | }; | |
33 | ||
15ad7cdc | 34 | int seq_open(struct file *, const struct seq_operations *); |
1da177e4 LT |
35 | ssize_t seq_read(struct file *, char __user *, size_t, loff_t *); |
36 | loff_t seq_lseek(struct file *, loff_t, int); | |
37 | int seq_release(struct inode *, struct file *); | |
38 | int seq_escape(struct seq_file *, const char *, const char *); | |
39 | int seq_putc(struct seq_file *m, char c); | |
40 | int seq_puts(struct seq_file *m, const char *s); | |
41 | ||
42 | int seq_printf(struct seq_file *, const char *, ...) | |
43 | __attribute__ ((format (printf,2,3))); | |
44 | ||
c32c2f63 | 45 | int seq_path(struct seq_file *, struct path *, char *); |
1da177e4 LT |
46 | |
47 | int single_open(struct file *, int (*)(struct seq_file *, void *), void *); | |
48 | int single_release(struct inode *, struct file *); | |
39699037 PE |
49 | void *__seq_open_private(struct file *, const struct seq_operations *, int); |
50 | int seq_open_private(struct file *, const struct seq_operations *, int); | |
1da177e4 LT |
51 | int seq_release_private(struct inode *, struct file *); |
52 | ||
53 | #define SEQ_START_TOKEN ((void *)1) | |
54 | ||
bcf67e16 PE |
55 | /* |
56 | * Helpers for iteration over list_head-s in seq_files | |
57 | */ | |
58 | ||
59 | extern struct list_head *seq_list_start(struct list_head *head, | |
60 | loff_t pos); | |
61 | extern struct list_head *seq_list_start_head(struct list_head *head, | |
62 | loff_t pos); | |
63 | extern struct list_head *seq_list_next(void *v, struct list_head *head, | |
64 | loff_t *ppos); | |
65 | ||
e372c414 DL |
66 | struct net; |
67 | struct seq_net_private { | |
1218854a | 68 | #ifdef CONFIG_NET_NS |
e372c414 | 69 | struct net *net; |
1218854a | 70 | #endif |
e372c414 DL |
71 | }; |
72 | ||
73 | int seq_open_net(struct inode *, struct file *, | |
74 | const struct seq_operations *, int); | |
75 | int seq_release_net(struct inode *, struct file *); | |
76 | static inline struct net *seq_file_net(struct seq_file *seq) | |
77 | { | |
1218854a | 78 | #ifdef CONFIG_NET_NS |
e372c414 | 79 | return ((struct seq_net_private *)seq->private)->net; |
1218854a YH |
80 | #else |
81 | return &init_net; | |
82 | #endif | |
e372c414 DL |
83 | } |
84 | ||
1da177e4 LT |
85 | #endif |
86 | #endif |