4 * Copyright (C) 1992 by Linus Torvalds
8 #include <linux/types.h>
9 #include <linux/errno.h>
10 #include <linux/time.h>
11 #include <linux/kernel.h>
12 #include <linux/poll.h>
13 #include <linux/proc_fs.h>
16 #include <asm/uaccess.h>
19 extern wait_queue_head_t log_wait;
21 extern int do_syslog(int type, char __user *bug, int count);
23 static int kmsg_open(struct inode * inode, struct file * file)
25 return do_syslog(1,NULL,0);
28 static int kmsg_release(struct inode * inode, struct file * file)
30 (void) do_syslog(0,NULL,0);
34 static ssize_t kmsg_read(struct file *file, char __user *buf,
35 size_t count, loff_t *ppos)
37 if ((file->f_flags & O_NONBLOCK) && !do_syslog(9, NULL, 0))
39 return do_syslog(2, buf, count);
42 static unsigned int kmsg_poll(struct file *file, poll_table *wait)
44 poll_wait(file, &log_wait, wait);
45 if (do_syslog(9, NULL, 0))
46 return POLLIN | POLLRDNORM;
51 static const struct file_operations proc_kmsg_operations = {
55 .release = kmsg_release,
58 static int __init proc_kmsg_init(void)
60 proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations);
63 module_init(proc_kmsg_init);