/* Reading the proc file will show status (not the firmware contents) */
static ssize_t rtas_flash_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct proc_dir_entry *dp = PDE(file->f_path.dentry->d_inode);
struct rtas_update_flash_t *uf;
char msg[RTAS_MSG_MAXLEN];
int msglen;
uf = (struct rtas_update_flash_t *) dp->data;
if (!strcmp(dp->name, FIRMWARE_FLASH_NAME)) {
get_flash_status_msg(uf->status, msg);
} else { /* FIRMWARE_UPDATE_NAME */
sprintf(msg, "%d\n", uf->status);
}
msglen = strlen(msg);
if (msglen > count)
msglen = count;
if (ppos && *ppos != 0)
return 0; /* be cheap */
if (!access_ok(VERIFY_WRITE, buf, msglen))
return -EINVAL;
if (copy_to_user(buf, msg, msglen))
return -EFAULT;
if (ppos)
*ppos = msglen;
return msglen;
}
/* Reading the proc file will show status (not the firmware contents) */
static ssize_t rtas_flash_read_msg(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct rtas_update_flash_t *const uf = &rtas_update_flash_data;
char msg[RTAS_MSG_MAXLEN];
size_t len;
int status;
mutex_lock(&rtas_update_flash_mutex);
status = uf->status;
mutex_unlock(&rtas_update_flash_mutex);
/* Read as text message */
len = get_flash_status_msg(status, msg);
return simple_read_from_buffer(buf, count, ppos, msg, len);
}
/* Reading the proc file will show status (not the firmware contents) */
static ssize_t rtas_flash_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct proc_dir_entry *dp = PDE(file->f_path.dentry->d_inode);
struct rtas_update_flash_t *uf;
char msg[RTAS_MSG_MAXLEN];
uf = dp->data;
if (!strcmp(dp->name, FIRMWARE_FLASH_NAME)) {
get_flash_status_msg(uf->status, msg);
} else { /* FIRMWARE_UPDATE_NAME */
sprintf(msg, "%d\n", uf->status);
}
return simple_read_from_buffer(buf, count, ppos, msg, strlen(msg));
}
