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#ifndef _LINUX_SEQ_FILE_H
#define _LINUX_SEQ_FILE_H
#ifdef __KERNEL__

#include <linux/types.h>
#include <linux/string.h>
#include <asm/semaphore.h>

struct seq_operations;
struct file;
struct vfsmount;
struct dentry;
struct inode;

struct seq_file {
        char *buf;
        size_t size;
        size_t from;
        size_t count;
        loff_t index;
        struct semaphore sem;
        struct seq_operations *op;
        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);
};

int seq_open(struct file *, 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 *);

static inline int seq_putc(struct seq_file *m, char c)
{
        if (m->count < m->size) {
                m->buf[m->count++] = c;
                return 0;
        }
        return -1;
}

static inline int seq_puts(struct seq_file *m, const char *s)
{
        int len = strlen(s);
        if (m->count + len < m->size) {
                memcpy(m->buf + m->count, s, len);
                m->count += len;
                return 0;
        }
        m->count = m->size;
        return -1;
}

int seq_printf(struct seq_file *, const char *, ...)
        __attribute__ ((format (printf,2,3)));

int seq_path(struct seq_file *, struct vfsmount *, struct dentry *, char *);

int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
int single_release(struct inode *, struct file *);
int seq_release_private(struct inode *, struct file *);

#define SEQ_START_TOKEN ((void *)1)

#endif
#endif