64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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*** To edit the content of this header, modify the corresponding
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*** source file (e.g. under external/kernel-headers/original/) then
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*** run bionic/libc/kernel/tools/update_all.py
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***
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*** Any manual change here will be lost the next time this script will
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*** be run. You've been warned!
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***
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****************************************************************************
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****************************************************************************/
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#ifndef _UAPI__CRAMFS_H
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#define _UAPI__CRAMFS_H
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#include <linux/types.h>
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#include <linux/magic.h>
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#define CRAMFS_SIGNATURE "Compressed ROMFS"
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#define CRAMFS_MODE_WIDTH 16
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#define CRAMFS_UID_WIDTH 16
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#define CRAMFS_SIZE_WIDTH 24
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#define CRAMFS_GID_WIDTH 8
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#define CRAMFS_NAMELEN_WIDTH 6
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#define CRAMFS_OFFSET_WIDTH 26
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#define CRAMFS_MAXPATHLEN (((1 << CRAMFS_NAMELEN_WIDTH) - 1) << 2)
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struct cramfs_inode {
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__u32 mode : CRAMFS_MODE_WIDTH, uid : CRAMFS_UID_WIDTH;
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__u32 size : CRAMFS_SIZE_WIDTH, gid : CRAMFS_GID_WIDTH;
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__u32 namelen : CRAMFS_NAMELEN_WIDTH, offset : CRAMFS_OFFSET_WIDTH;
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};
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struct cramfs_info {
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__u32 crc;
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__u32 edition;
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__u32 blocks;
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__u32 files;
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};
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struct cramfs_super {
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__u32 magic;
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__u32 size;
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__u32 flags;
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__u32 future;
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__u8 signature[16];
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struct cramfs_info fsid;
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__u8 name[16];
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struct cramfs_inode root;
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};
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#define CRAMFS_FLAG_FSID_VERSION_2 0x00000001
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#define CRAMFS_FLAG_SORTED_DIRS 0x00000002
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#define CRAMFS_FLAG_HOLES 0x00000100
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#define CRAMFS_FLAG_WRONG_SIGNATURE 0x00000200
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#define CRAMFS_FLAG_SHIFTED_ROOT_OFFSET 0x00000400
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#define CRAMFS_FLAG_EXT_BLOCK_POINTERS 0x00000800
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#define CRAMFS_SUPPORTED_FLAGS (0x000000ff | CRAMFS_FLAG_HOLES | CRAMFS_FLAG_WRONG_SIGNATURE | CRAMFS_FLAG_SHIFTED_ROOT_OFFSET | CRAMFS_FLAG_EXT_BLOCK_POINTERS)
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#define CRAMFS_BLK_FLAG_UNCOMPRESSED (1 << 31)
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#define CRAMFS_BLK_FLAG_DIRECT_PTR (1 << 30)
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#define CRAMFS_BLK_FLAGS (CRAMFS_BLK_FLAG_UNCOMPRESSED | CRAMFS_BLK_FLAG_DIRECT_PTR)
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#define CRAMFS_BLK_DIRECT_PTR_SHIFT 2
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#endif
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