xref: /aosp_15_r20/bionic/libc/kernel/uapi/linux/cramfs_fs.h (revision 8d67ca893c1523eb926b9080dbe4e2ffd2a27ba1) 
1*8d67ca89SAndroid Build Coastguard Worker /*
2*8d67ca89SAndroid Build Coastguard Worker  * This file is auto-generated. Modifications will be lost.
3*8d67ca89SAndroid Build Coastguard Worker  *
4*8d67ca89SAndroid Build Coastguard Worker  * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/
5*8d67ca89SAndroid Build Coastguard Worker  * for more information.
6*8d67ca89SAndroid Build Coastguard Worker  */
7*8d67ca89SAndroid Build Coastguard Worker #ifndef _UAPI__CRAMFS_H
8*8d67ca89SAndroid Build Coastguard Worker #define _UAPI__CRAMFS_H
9*8d67ca89SAndroid Build Coastguard Worker #include <linux/types.h>
10*8d67ca89SAndroid Build Coastguard Worker #include <linux/magic.h>
11*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_SIGNATURE "Compressed ROMFS"
12*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_MODE_WIDTH 16
13*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_UID_WIDTH 16
14*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_SIZE_WIDTH 24
15*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_GID_WIDTH 8
16*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_NAMELEN_WIDTH 6
17*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_OFFSET_WIDTH 26
18*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_MAXPATHLEN (((1 << CRAMFS_NAMELEN_WIDTH) - 1) << 2)
19*8d67ca89SAndroid Build Coastguard Worker struct cramfs_inode {
20*8d67ca89SAndroid Build Coastguard Worker   __u32 mode : CRAMFS_MODE_WIDTH, uid : CRAMFS_UID_WIDTH;
21*8d67ca89SAndroid Build Coastguard Worker   __u32 size : CRAMFS_SIZE_WIDTH, gid : CRAMFS_GID_WIDTH;
22*8d67ca89SAndroid Build Coastguard Worker   __u32 namelen : CRAMFS_NAMELEN_WIDTH, offset : CRAMFS_OFFSET_WIDTH;
23*8d67ca89SAndroid Build Coastguard Worker };
24*8d67ca89SAndroid Build Coastguard Worker struct cramfs_info {
25*8d67ca89SAndroid Build Coastguard Worker   __u32 crc;
26*8d67ca89SAndroid Build Coastguard Worker   __u32 edition;
27*8d67ca89SAndroid Build Coastguard Worker   __u32 blocks;
28*8d67ca89SAndroid Build Coastguard Worker   __u32 files;
29*8d67ca89SAndroid Build Coastguard Worker };
30*8d67ca89SAndroid Build Coastguard Worker struct cramfs_super {
31*8d67ca89SAndroid Build Coastguard Worker   __u32 magic;
32*8d67ca89SAndroid Build Coastguard Worker   __u32 size;
33*8d67ca89SAndroid Build Coastguard Worker   __u32 flags;
34*8d67ca89SAndroid Build Coastguard Worker   __u32 future;
35*8d67ca89SAndroid Build Coastguard Worker   __u8 signature[16];
36*8d67ca89SAndroid Build Coastguard Worker   struct cramfs_info fsid;
37*8d67ca89SAndroid Build Coastguard Worker   __u8 name[16];
38*8d67ca89SAndroid Build Coastguard Worker   struct cramfs_inode root;
39*8d67ca89SAndroid Build Coastguard Worker };
40*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_FLAG_FSID_VERSION_2 0x00000001
41*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_FLAG_SORTED_DIRS 0x00000002
42*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_FLAG_HOLES 0x00000100
43*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_FLAG_WRONG_SIGNATURE 0x00000200
44*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_FLAG_SHIFTED_ROOT_OFFSET 0x00000400
45*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_FLAG_EXT_BLOCK_POINTERS 0x00000800
46*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_SUPPORTED_FLAGS (0x000000ff | CRAMFS_FLAG_HOLES | CRAMFS_FLAG_WRONG_SIGNATURE | CRAMFS_FLAG_SHIFTED_ROOT_OFFSET | CRAMFS_FLAG_EXT_BLOCK_POINTERS)
47*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_BLK_FLAG_UNCOMPRESSED (1 << 31)
48*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_BLK_FLAG_DIRECT_PTR (1 << 30)
49*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_BLK_FLAGS (CRAMFS_BLK_FLAG_UNCOMPRESSED | CRAMFS_BLK_FLAG_DIRECT_PTR)
50*8d67ca89SAndroid Build Coastguard Worker #define CRAMFS_BLK_DIRECT_PTR_SHIFT 2
51*8d67ca89SAndroid Build Coastguard Worker #endif
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