1 Index: linux-2.4.20-8/drivers/block/loop.c
2 ===================================================================
3 --- linux-2.4.20-8.orig/drivers/block/loop.c 2002-11-29 07:53:12.000000000 +0800
4 +++ linux-2.4.20-8/drivers/block/loop.c 2004-01-10 00:02:33.000000000 +0800
7 return copy_to_user(arg, &info, sizeof(info)) ? -EFAULT : 0;
9 +static int loop_get_info(struct loop_device *lo, struct loop_info *arg)
11 + struct loop_info info;
12 + struct file *file = lo->lo_backing_file;
14 + if (lo->lo_state != Lo_bound)
18 + memset(&info, 0, sizeof(info));
19 + info.lo_number = lo->lo_number;
20 + info.lo_device = kdev_t_to_nr(file->f_dentry->d_inode->i_dev);
21 + info.lo_inode = file->f_dentry->d_inode->i_ino;
22 + info.lo_rdevice = kdev_t_to_nr(lo->lo_device);
23 + info.lo_offset = lo->lo_offset;
24 + info.lo_flags = lo->lo_flags;
25 + strncpy(info.lo_name, lo->lo_name, LO_NAME_SIZE);
26 + info.lo_encrypt_type = lo->lo_encrypt_type;
27 + if (lo->lo_encrypt_key_size && capable(CAP_SYS_ADMIN)) {
28 + info.lo_encrypt_key_size = lo->lo_encrypt_key_size;
29 + memcpy(info.lo_encrypt_key, lo->lo_encrypt_key,
30 + lo->lo_encrypt_key_size);
32 + return memcpy(arg, &info, sizeof(info)) ? -EFAULT : 0;
35 static int lo_ioctl(struct inode * inode, struct file * file,
36 unsigned int cmd, unsigned long arg)
39 err = loop_get_status(lo, (struct loop_info *) arg);
42 + err = loop_get_info(lo, (struct loop_info *) arg);
45 if (lo->lo_state != Lo_bound) {
47 Index: linux-2.4.20-8/include/linux/loop.h
48 ===================================================================
49 --- linux-2.4.20-8.orig/include/linux/loop.h 2001-09-18 04:16:30.000000000 +0800
50 +++ linux-2.4.20-8/include/linux/loop.h 2004-01-09 23:50:17.000000000 +0800
52 #define LOOP_CLR_FD 0x4C01
53 #define LOOP_SET_STATUS 0x4C02
54 #define LOOP_GET_STATUS 0x4C03
55 +#define LOOP_GET_INFO 0x4C04