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/*
* linux/fs/proc/kmsg.c
*
* Copyright (C) 1992 by Linus Torvalds
*
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <asm/uaccess.h>
#include <asm/io.h>
extern unsigned long log_size;
extern struct wait_queue * log_wait;
asmlinkage int sys_syslog(int type, char * bug, int count);
static int kmsg_open(struct inode * inode, struct file * file)
{
return sys_syslog(1,NULL,0);
}
static void kmsg_release(struct inode * inode, struct file * file)
{
(void) sys_syslog(0,NULL,0);
}
static long kmsg_read(struct inode * inode, struct file * file,
char * buf, unsigned long count)
{
return sys_syslog(2,buf,count);
}
static int kmsg_select(struct inode *inode, struct file *file, int sel_type, select_table * wait)
{
if (sel_type != SEL_IN)
return 0;
if (log_size)
return 1;
select_wait(&log_wait, wait);
return 0;
}
static struct file_operations proc_kmsg_operations = {
NULL, /* kmsg_lseek */
kmsg_read,
NULL, /* kmsg_write */
NULL, /* kmsg_readdir */
kmsg_select, /* kmsg_select */
NULL, /* kmsg_ioctl */
NULL, /* mmap */
kmsg_open,
kmsg_release,
NULL /* can't fsync */
};
struct inode_operations proc_kmsg_inode_operations = {
&proc_kmsg_operations, /* default base directory file-ops */
NULL, /* create */
NULL, /* lookup */
NULL, /* link */
NULL, /* unlink */
NULL, /* symlink */
NULL, /* mkdir */
NULL, /* rmdir */
NULL, /* mknod */
NULL, /* rename */
NULL, /* readlink */
NULL, /* follow_link */
NULL, /* readpage */
NULL, /* writepage */
NULL, /* bmap */
NULL, /* truncate */
NULL /* permission */
};
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