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