fs/proc/kmsg.c

/* */
This source file includes following definitions.
kmsg_open
kmsg_release
kmsg_read
kmsg_select
   1 /*
   2  *  linux/fs/proc/kmsg.c
   3  *
   4  *  Copyright (C) 1992  by Linus Torvalds
   5  *
   6  */
   7 
   8 #include <linux/types.h>
   9 #include <linux/errno.h>
  10 #include <linux/sched.h>
  11 #include <linux/kernel.h>
  12 
  13 #include <asm/segment.h>
  14 #include <asm/io.h>
  15 
  16 extern unsigned long log_size;
  17 extern struct wait_queue * log_wait;
  18 
  19 asmlinkage int sys_syslog(int type, char * bug, int count);
  20 
  21 static int kmsg_open(struct inode * inode, struct file * file)
     /*  */
  22 {
  23         return sys_syslog(1,NULL,0);
  24 }
  25 
  26 static void kmsg_release(struct inode * inode, struct file * file)
     /*  */
  27 {
  28         (void) sys_syslog(0,NULL,0);
  29 }
  30 
  31 static int kmsg_read(struct inode * inode, struct file * file,char * buf, int count)
     /*  */
  32 {
  33         return sys_syslog(2,buf,count);
  34 }
  35 
  36 static int kmsg_select(struct inode *inode, struct file *file, int sel_type, select_table * wait)
     /*  */
  37 {
  38         if (sel_type != SEL_IN)
  39                 return 0;
  40         if (log_size)
  41                 return 1;
  42         select_wait(&log_wait, wait);
  43         return 0;
  44 }
  45 
  46 
  47 static struct file_operations proc_kmsg_operations = {
  48         NULL,           /* kmsg_lseek */
  49         kmsg_read,
  50         NULL,           /* kmsg_write */
  51         NULL,           /* kmsg_readdir */
  52         kmsg_select,    /* kmsg_select */
  53         NULL,           /* kmsg_ioctl */
  54         NULL,           /* mmap */
  55         kmsg_open,
  56         kmsg_release,
  57         NULL            /* can't fsync */
  58 };
  59 
  60 struct inode_operations proc_kmsg_inode_operations = {
  61         &proc_kmsg_operations,  /* default base directory file-ops */
  62         NULL,                   /* create */
  63         NULL,                   /* lookup */
  64         NULL,                   /* link */
  65         NULL,                   /* unlink */
  66         NULL,                   /* symlink */
  67         NULL,                   /* mkdir */
  68         NULL,                   /* rmdir */
  69         NULL,                   /* mknod */
  70         NULL,                   /* rename */
  71         NULL,                   /* readlink */
  72         NULL,                   /* follow_link */
  73         NULL,                   /* bmap */
  74         NULL,                   /* truncate */
  75         NULL                    /* permission */
  76 };
/* */
root/fs/proc/kmsg.c

DEFINITIONS
