Subversion Repositories or1k_old

/*

 *  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/segment.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 int kmsg_read(struct inode * inode, struct file * file,char * buf, int 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 */

};