Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _LINUX_SEQ_FILE_H |
| 2 | #define _LINUX_SEQ_FILE_H |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | |
| 4 | #include <linux/types.h> |
| 5 | #include <linux/string.h> |
Ingo Molnar | 0ac1759 | 2006-03-23 03:00:37 -0800 | [diff] [blame] | 6 | #include <linux/mutex.h> |
Alexey Dobriyan | 50ac2d6 | 2008-08-12 15:09:02 -0700 | [diff] [blame] | 7 | #include <linux/cpumask.h> |
| 8 | #include <linux/nodemask.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | |
| 10 | struct seq_operations; |
| 11 | struct file; |
Jan Blunck | c32c2f6 | 2008-02-14 19:38:43 -0800 | [diff] [blame] | 12 | struct path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | struct inode; |
Ram Pai | 6092d04 | 2008-03-27 13:06:20 +0100 | [diff] [blame] | 14 | struct dentry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | |
| 16 | struct seq_file { |
| 17 | char *buf; |
| 18 | size_t size; |
| 19 | size_t from; |
| 20 | size_t count; |
| 21 | loff_t index; |
Mathieu Desnoyers | 2b47c36 | 2007-10-16 23:27:21 -0700 | [diff] [blame] | 22 | u64 version; |
Ingo Molnar | 0ac1759 | 2006-03-23 03:00:37 -0800 | [diff] [blame] | 23 | struct mutex lock; |
Helge Deller | 15ad7cd | 2006-12-06 20:40:36 -0800 | [diff] [blame] | 24 | const struct seq_operations *op; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | void *private; |
| 26 | }; |
| 27 | |
| 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); |
| 33 | }; |
| 34 | |
Al Viro | 521b5d0 | 2008-03-28 00:46:41 -0400 | [diff] [blame] | 35 | #define SEQ_SKIP 1 |
| 36 | |
Török Edwin | 74e2f33 | 2008-11-22 13:28:48 +0200 | [diff] [blame] | 37 | char *mangle_path(char *s, char *p, char *esc); |
Helge Deller | 15ad7cd | 2006-12-06 20:40:36 -0800 | [diff] [blame] | 38 | int seq_open(struct file *, const struct seq_operations *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | ssize_t seq_read(struct file *, char __user *, size_t, loff_t *); |
| 40 | loff_t seq_lseek(struct file *, loff_t, int); |
| 41 | int seq_release(struct inode *, struct file *); |
| 42 | int seq_escape(struct seq_file *, const char *, const char *); |
| 43 | int seq_putc(struct seq_file *m, char c); |
| 44 | int seq_puts(struct seq_file *m, const char *s); |
| 45 | |
| 46 | int seq_printf(struct seq_file *, const char *, ...) |
| 47 | __attribute__ ((format (printf,2,3))); |
| 48 | |
Jan Blunck | c32c2f6 | 2008-02-14 19:38:43 -0800 | [diff] [blame] | 49 | int seq_path(struct seq_file *, struct path *, char *); |
Ram Pai | 6092d04 | 2008-03-27 13:06:20 +0100 | [diff] [blame] | 50 | int seq_dentry(struct seq_file *, struct dentry *, char *); |
Miklos Szeredi | 9d1bc601 | 2008-03-27 13:06:21 +0100 | [diff] [blame] | 51 | int seq_path_root(struct seq_file *m, struct path *path, struct path *root, |
| 52 | char *esc); |
Rusty Russell | cb78a0c | 2008-12-30 09:05:14 +1030 | [diff] [blame] | 53 | int seq_bitmap(struct seq_file *m, const unsigned long *bits, |
| 54 | unsigned int nr_bits); |
| 55 | static inline int seq_cpumask(struct seq_file *m, const struct cpumask *mask) |
Alexey Dobriyan | 50ac2d6 | 2008-08-12 15:09:02 -0700 | [diff] [blame] | 56 | { |
Rusty Russell | e12f010 | 2008-12-30 09:05:19 +1030 | [diff] [blame^] | 57 | return seq_bitmap(m, mask->bits, nr_cpu_ids); |
Alexey Dobriyan | 50ac2d6 | 2008-08-12 15:09:02 -0700 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | static inline int seq_nodemask(struct seq_file *m, nodemask_t *mask) |
| 61 | { |
| 62 | return seq_bitmap(m, mask->bits, MAX_NUMNODES); |
| 63 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Lai Jiangshan | 3eda201 | 2008-10-18 20:28:19 -0700 | [diff] [blame] | 65 | int seq_bitmap_list(struct seq_file *m, unsigned long *bits, |
| 66 | unsigned int nr_bits); |
| 67 | |
| 68 | static inline int seq_cpumask_list(struct seq_file *m, cpumask_t *mask) |
| 69 | { |
| 70 | return seq_bitmap_list(m, mask->bits, NR_CPUS); |
| 71 | } |
| 72 | |
| 73 | static inline int seq_nodemask_list(struct seq_file *m, nodemask_t *mask) |
| 74 | { |
| 75 | return seq_bitmap_list(m, mask->bits, MAX_NUMNODES); |
| 76 | } |
| 77 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | int single_open(struct file *, int (*)(struct seq_file *, void *), void *); |
| 79 | int single_release(struct inode *, struct file *); |
Pavel Emelyanov | 3969903 | 2007-10-10 02:28:42 -0700 | [diff] [blame] | 80 | void *__seq_open_private(struct file *, const struct seq_operations *, int); |
| 81 | int seq_open_private(struct file *, const struct seq_operations *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | int seq_release_private(struct inode *, struct file *); |
| 83 | |
| 84 | #define SEQ_START_TOKEN ((void *)1) |
| 85 | |
Pavel Emelianov | bcf67e1 | 2007-07-10 17:22:26 -0700 | [diff] [blame] | 86 | /* |
| 87 | * Helpers for iteration over list_head-s in seq_files |
| 88 | */ |
| 89 | |
| 90 | extern struct list_head *seq_list_start(struct list_head *head, |
| 91 | loff_t pos); |
| 92 | extern struct list_head *seq_list_start_head(struct list_head *head, |
| 93 | loff_t pos); |
| 94 | extern struct list_head *seq_list_next(void *v, struct list_head *head, |
| 95 | loff_t *ppos); |
| 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | #endif |