static int param_write_proc_debug(struct file *file, const char *buffer,
unsigned long count, void *data)
{
char *buf;
if (count < 1)
return -EINVAL;
buf = kmalloc(count, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (copy_from_user(buf, buffer, count)) {
kfree(buf);
return -EFAULT;
}
switch(buf[0]) {
case '0':
param_show_info();
break;
case '1':
param_set_default();
save_lfs_param_value();
klogi("Parameters have been set as DEFAULT values...");
param_show_info();
break;
case '2':
param_run_test();
break;
case '3':
param_lfs_run_test();
break;
default:
kfree(buf);
return -EINVAL;
}
kfree(buf);
return count;
}
static int param_init(void)
{
int ret;
#ifdef PARAM_USE_INIT_BUFFER
param_buf = kmalloc(PARAM_LEN, GFP_KERNEL);
if (!param_buf) {
kloge("Unable to alloc param_buf!");
return -ENOMEM;
}
image_buf = kmalloc(IMAGE_LEN, GFP_KERNEL);
if (!image_buf) {
kloge("Unable to alloc image_buf!");
kfree(param_buf);
return -ENOMEM;
}
#endif
#ifdef PARAM_PROCFS_DEBUG
struct proc_dir_entry *ent;
/* Creats '/proc/param' directory */
param_dir = proc_mkdir("param", NULL);
if (param_dir == NULL) {
kloge("Unable to create /proc/param directory\n");
return -ENOMEM;
}
/* Creats RW '/proc/param/sleep/debug' entry */
ent = create_proc_entry("debug", 0, param_dir);
if (ent == NULL) {
kloge("Unable to create /proc/param/debug entry");
ret = -ENOMEM;
goto fail;
}
ent->read_proc = param_read_proc_debug;
ent->write_proc = param_write_proc_debug;
#endif
klogi("param_init");
#if 0
ret = load_param_value();
#else
ret = load_lfs_param_value();
#endif
if (ret < 0) {
kloge("Loading parameters failed. Parameters have been initialized as default.");
param_set_default();
}
sec_set_param_value = set_param_value;
sec_get_param_value = get_param_value;
return 0;
#ifdef PARAM_PROCFS_DEBUG
fail:
remove_proc_entry("param", 0);
#ifdef PARAM_USE_INIT_BUFFER
kfree(param_buf);
kfree(image_buf);
#endif
return ret;
#endif
}
/*
* Only run this once, or mountain trolls may carry you off to the
* wilderness.
*/
static void set_defaults(void)
{
spew.state = 0;
assert(param_set_default(PARAM_ALL, P_STATE_DEFAULT));
}