static ssize_t env_proc_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
{
if(!env_valid){
char p[32];
char *page = (char *)p;
int err = 0;
ssize_t len = 0;
printk("no env vaild\n");
page += sprintf(page, "\nno env vaild\n");
len = page - &p[0];
if(*ppos >= len){
return 0;
}
err = copy_to_user(buf,(char *)p,len);
*ppos += len;
if(err)
return err;
return len;
}else{
int err = 0;
int env_valid_length = get_env_valid_length();
if(*ppos >= env_valid_length)
return 0;
if((size+*ppos) > env_valid_length)
size = env_valid_length - *ppos;
err = copy_to_user(buf,g_env.env_data + *ppos,size);
if(err)
return err;
*ppos += size;
return size;
}
}
static ssize_t
env_proc_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
{
char p[32];
char *page = (char *)p;
int err = 0;
ssize_t len = 0;
int env_valid_length = 0;
env_init();
if (!env_valid) {
pr_debug("[%s]read no env valid\n", MODULE_NAME);
page += sprintf(page, "\nno env valid\n");
len = page - &p[0];
if (*ppos >= len) {
return 0;
}
err = copy_to_user(buf,(char *)p,len);
*ppos += len;
if (err) {
return err;
}
return len;
} else {
env_valid_length = get_env_valid_length();
if (*ppos >= env_valid_length) {
return 0;
}
if ((size + *ppos) > env_valid_length) {
size = env_valid_length - *ppos;
}
err = copy_to_user(buf, g_env.env_data + *ppos, size);
if (err) {
return err;
}
*ppos += size;
return size;
}
}
