1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _UAPI__CRAMFS_H 20 #define _UAPI__CRAMFS_H 21 #include <linux/types.h> 22 #include <linux/magic.h> 23 #define CRAMFS_SIGNATURE "Compressed ROMFS" 24 #define CRAMFS_MODE_WIDTH 16 25 #define CRAMFS_UID_WIDTH 16 26 #define CRAMFS_SIZE_WIDTH 24 27 #define CRAMFS_GID_WIDTH 8 28 #define CRAMFS_NAMELEN_WIDTH 6 29 #define CRAMFS_OFFSET_WIDTH 26 30 #define CRAMFS_MAXPATHLEN (((1 << CRAMFS_NAMELEN_WIDTH) - 1) << 2) 31 struct cramfs_inode { 32 __u32 mode : CRAMFS_MODE_WIDTH, uid : CRAMFS_UID_WIDTH; 33 __u32 size : CRAMFS_SIZE_WIDTH, gid : CRAMFS_GID_WIDTH; 34 __u32 namelen : CRAMFS_NAMELEN_WIDTH, offset : CRAMFS_OFFSET_WIDTH; 35 }; 36 struct cramfs_info { 37 __u32 crc; 38 __u32 edition; 39 __u32 blocks; 40 __u32 files; 41 }; 42 struct cramfs_super { 43 __u32 magic; 44 __u32 size; 45 __u32 flags; 46 __u32 future; 47 __u8 signature[16]; 48 struct cramfs_info fsid; 49 __u8 name[16]; 50 struct cramfs_inode root; 51 }; 52 #define CRAMFS_FLAG_FSID_VERSION_2 0x00000001 53 #define CRAMFS_FLAG_SORTED_DIRS 0x00000002 54 #define CRAMFS_FLAG_HOLES 0x00000100 55 #define CRAMFS_FLAG_WRONG_SIGNATURE 0x00000200 56 #define CRAMFS_FLAG_SHIFTED_ROOT_OFFSET 0x00000400 57 #define CRAMFS_FLAG_EXT_BLOCK_POINTERS 0x00000800 58 #define CRAMFS_SUPPORTED_FLAGS (0x000000ff | CRAMFS_FLAG_HOLES | CRAMFS_FLAG_WRONG_SIGNATURE | CRAMFS_FLAG_SHIFTED_ROOT_OFFSET | CRAMFS_FLAG_EXT_BLOCK_POINTERS) 59 #define CRAMFS_BLK_FLAG_UNCOMPRESSED (1 << 31) 60 #define CRAMFS_BLK_FLAG_DIRECT_PTR (1 << 30) 61 #define CRAMFS_BLK_FLAGS (CRAMFS_BLK_FLAG_UNCOMPRESSED | CRAMFS_BLK_FLAG_DIRECT_PTR) 62 #define CRAMFS_BLK_DIRECT_PTR_SHIFT 2 63 #endif 64
