/include/linux/seq_file.h
https://github.com/airy09/android_kernel_sony_apq8064 · C Header · 160 lines · 116 code · 21 blank · 23 comment · 3 complexity · 18584554b7671a38897a9dd75b14d3c2 MD5 · raw file
- #ifndef _LINUX_SEQ_FILE_H
- #define _LINUX_SEQ_FILE_H
- #include <linux/types.h>
- #include <linux/string.h>
- #include <linux/bug.h>
- #include <linux/mutex.h>
- #include <linux/cpumask.h>
- #include <linux/nodemask.h>
- struct seq_operations;
- struct file;
- struct path;
- struct inode;
- struct dentry;
- struct seq_file {
- char *buf;
- size_t size;
- size_t from;
- size_t count;
- loff_t index;
- loff_t read_pos;
- u64 version;
- struct mutex lock;
- const struct seq_operations *op;
- int poll_event;
- void *private;
- };
- struct seq_operations {
- void * (*start) (struct seq_file *m, loff_t *pos);
- void (*stop) (struct seq_file *m, void *v);
- void * (*next) (struct seq_file *m, void *v, loff_t *pos);
- int (*show) (struct seq_file *m, void *v);
- };
- #define SEQ_SKIP 1
- /**
- * seq_get_buf - get buffer to write arbitrary data to
- * @m: the seq_file handle
- * @bufp: the beginning of the buffer is stored here
- *
- * Return the number of bytes available in the buffer, or zero if
- * there's no space.
- */
- static inline size_t seq_get_buf(struct seq_file *m, char **bufp)
- {
- BUG_ON(m->count > m->size);
- if (m->count < m->size)
- *bufp = m->buf + m->count;
- else
- *bufp = NULL;
- return m->size - m->count;
- }
- /**
- * seq_commit - commit data to the buffer
- * @m: the seq_file handle
- * @num: the number of bytes to commit
- *
- * Commit @num bytes of data written to a buffer previously acquired
- * by seq_buf_get. To signal an error condition, or that the data
- * didn't fit in the available space, pass a negative @num value.
- */
- static inline void seq_commit(struct seq_file *m, int num)
- {
- if (num < 0) {
- m->count = m->size;
- } else {
- BUG_ON(m->count + num > m->size);
- m->count += num;
- }
- }
- char *mangle_path(char *s, const char *p, const char *esc);
- int seq_open(struct file *, const struct seq_operations *);
- ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
- loff_t seq_lseek(struct file *, loff_t, int);
- int seq_release(struct inode *, struct file *);
- int seq_escape(struct seq_file *, const char *, const char *);
- int seq_putc(struct seq_file *m, char c);
- int seq_puts(struct seq_file *m, const char *s);
- int seq_write(struct seq_file *seq, const void *data, size_t len);
- __printf(2, 3) int seq_printf(struct seq_file *, const char *, ...);
- int seq_path(struct seq_file *, const struct path *, const char *);
- int seq_dentry(struct seq_file *, struct dentry *, const char *);
- int seq_path_root(struct seq_file *m, const struct path *path,
- const struct path *root, const char *esc);
- int seq_bitmap(struct seq_file *m, const unsigned long *bits,
- unsigned int nr_bits);
- static inline int seq_cpumask(struct seq_file *m, const struct cpumask *mask)
- {
- return seq_bitmap(m, cpumask_bits(mask), nr_cpu_ids);
- }
- static inline int seq_nodemask(struct seq_file *m, nodemask_t *mask)
- {
- return seq_bitmap(m, mask->bits, MAX_NUMNODES);
- }
- int seq_bitmap_list(struct seq_file *m, const unsigned long *bits,
- unsigned int nr_bits);
- static inline int seq_cpumask_list(struct seq_file *m,
- const struct cpumask *mask)
- {
- return seq_bitmap_list(m, cpumask_bits(mask), nr_cpu_ids);
- }
- static inline int seq_nodemask_list(struct seq_file *m, nodemask_t *mask)
- {
- return seq_bitmap_list(m, mask->bits, MAX_NUMNODES);
- }
- int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
- int single_release(struct inode *, struct file *);
- void *__seq_open_private(struct file *, const struct seq_operations *, int);
- int seq_open_private(struct file *, const struct seq_operations *, int);
- int seq_release_private(struct inode *, struct file *);
- int seq_put_decimal_ull(struct seq_file *m, char delimiter,
- unsigned long long num);
- int seq_put_decimal_ll(struct seq_file *m, char delimiter,
- long long num);
- #define SEQ_START_TOKEN ((void *)1)
- /*
- * Helpers for iteration over list_head-s in seq_files
- */
- extern struct list_head *seq_list_start(struct list_head *head,
- loff_t pos);
- extern struct list_head *seq_list_start_head(struct list_head *head,
- loff_t pos);
- extern struct list_head *seq_list_next(void *v, struct list_head *head,
- loff_t *ppos);
- /*
- * Helpers for iteration over hlist_head-s in seq_files
- */
- extern struct hlist_node *seq_hlist_start(struct hlist_head *head,
- loff_t pos);
- extern struct hlist_node *seq_hlist_start_head(struct hlist_head *head,
- loff_t pos);
- extern struct hlist_node *seq_hlist_next(void *v, struct hlist_head *head,
- loff_t *ppos);
- extern struct hlist_node *seq_hlist_start_rcu(struct hlist_head *head,
- loff_t pos);
- extern struct hlist_node *seq_hlist_start_head_rcu(struct hlist_head *head,
- loff_t pos);
- extern struct hlist_node *seq_hlist_next_rcu(void *v,
- struct hlist_head *head,
- loff_t *ppos);
- #endif