On Wed, Mar 21, 2001 at 04:31:31PM +0100, Giscard Wépiwé wrote:
# Hallo everybody,
# As it seems to be, proc_register und proc_unregister
# are obsolete in kernel 2.4.x to create and delete a
# /proc file entry.
# Could someone tell me, what is the new alternative to
# do it?
# Thanks already for the help.
hi !
below is code snippet (!typo proof :) that reguisters/unregisters proc
entry MY_PROC_ENTRY_NAME right under /proc dir.
hope that helps.
rgds,
Denis.
//=====================================================
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#define MY_PROC_ENTRY_NAME "my_proc_entry"
struct proc_dir_entry *my_proc_entry=NULL;
static ssize_t ip_prof_output(
struct file *file,
char *buf,
size_t len,
loff_t *offset)
{
/* ... implement output from proc entry here ... */
return N; /* returns number of output bytes */
}
static ssize_t ip_prof_input(
struct file *file,
const char *buf,
size_t len,
loff_t *offset)
{
/* ... implemetnt input into proc entry here ... */
return N; /* returns number of input bytes */
}
int my_proc_entry_open(struct inode *inode, struct file *file) {
return 0;
}
int my_proc_entry_close(struct inode *inode, struct file *file){
return 0;
}
static int my_proc_entry_permission( struct inode *inode, int op) {
/* allow supeuser access only. doesn't really matter. */
if(op==4 || (op==2 && current->euid==0))
return 0;
return -EACCES;
}
static struct file_operations my_proc_entry_fops =
{
read: my_proc_entry_output,
write: my_proc_entry_input,
open: my_proc_entry_open,
release:my_proc_entry_close,
};
static struct inode_operations my_proc_entry_iops =
{
permission: my_proc_entry_permission
};
int start_my_proc_entry(void) {
my_proc_file = create_proc_entry(MY_PROC_ENTRY_NAME, S_IFREG | S_IRUGO | S_IWUSR, &proc_root);
if ( !my_proc_file ) return -ENOMEM;
my_proc_entry->proc_fops = &my_proc_entry_fops;
ip_prof->proc_iops = &my_proc_entry_iops;
return 0;
}
int stop_my_proc_entry(void) {
printk("my_proc_entry: terminating.\n");
remove_proc_entry(MY_PROC_ENTRY_NAME, &proc_root);
return 0;
}
//==============================================================
--
("\''/").__..-''"`-. . denis.karpov@necsom.com
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