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#include <linux/types.h>
/* #include <linux/errno.h> */
/* #include <linux/time.h> */
/* #include <linux/kernel.h> */
/* #include <linux/module.h> */
#include <linux/wait.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include "mlog_internal.h"
extern wait_queue_head_t mlog_wait;
extern void mlog_doopen(void);
extern int mlog_unread(void);
extern int mlog_doread(char __user *buf, size_t len);
extern int mlog_show_info(struct seq_file *m, void *v);
extern int mlog_print_fmt(struct seq_file *m);
static int mlog_open(struct inode *inode, struct file *file)
{
MLOG_PRINTK("[mlog] open %d\n", mlog_unread());
mlog_doopen();
return 0;
}
static int mlog_release(struct inode *inode, struct file *file)
{
MLOG_PRINTK("[mlog] release\n");
return 0;
}
static ssize_t mlog_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
if (file->f_flags & O_NONBLOCK) {
if (!mlog_unread())
return -EAGAIN;
/* MLOG_PRINTK("[mlog] read (NonBlock) %d\n", count); */
}
return mlog_doread(buf, count);
}
static unsigned int mlog_poll(struct file *file, poll_table *wait)
{
/* MLOG_PRINTK("[mlog] poll\n"); */
poll_wait(file, &mlog_wait, wait);
if (mlog_unread())
return POLLIN | POLLRDNORM;
return 0;
}
static const struct file_operations proc_mlog_operations = {
.read = mlog_read,
.poll = mlog_poll,
.open = mlog_open,
.release = mlog_release,
.llseek = generic_file_llseek,
};
static int mlog_fmt_proc_show(struct seq_file *m, void *v)
{
return mlog_print_fmt(m);
}
static int mlog_fmt_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, mlog_fmt_proc_show, NULL);
}
static const struct file_operations mlog_fmt_proc_fops = {
.open = mlog_fmt_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void mlog_init_procfs(void)
{
proc_create("mlog_fmt", 0, NULL, &mlog_fmt_proc_fops);
proc_create("mlog", 0, NULL, &proc_mlog_operations);
}
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