|
@@ -0,0 +1,436 @@
|
|
|
+/* SPDX-License-Identifier: GPL-2.0-only OR Apache-2.0 */
|
|
|
+/*
|
|
|
+ * EROFS (Enhanced ROM File System) on-disk format definition
|
|
|
+ *
|
|
|
+ * Copyright (C) 2017-2018 HUAWEI, Inc.
|
|
|
+ * http://www.huawei.com/
|
|
|
+ * Copyright (C) 2021, Alibaba Cloud
|
|
|
+ */
|
|
|
+#ifndef __EROFS_FS_H
|
|
|
+#define __EROFS_FS_H
|
|
|
+
|
|
|
+#include <asm/unaligned.h>
|
|
|
+#include <fs.h>
|
|
|
+#include <part.h>
|
|
|
+#include <stdint.h>
|
|
|
+#include <compiler.h>
|
|
|
+
|
|
|
+#define EROFS_SUPER_MAGIC_V1 0xE0F5E1E2
|
|
|
+#define EROFS_SUPER_OFFSET 1024
|
|
|
+
|
|
|
+#define EROFS_FEATURE_COMPAT_SB_CHKSUM 0x00000001
|
|
|
+
|
|
|
+/*
|
|
|
+ * Any bits that aren't in EROFS_ALL_FEATURE_INCOMPAT should
|
|
|
+ * be incompatible with this kernel version.
|
|
|
+ */
|
|
|
+#define EROFS_FEATURE_INCOMPAT_LZ4_0PADDING 0x00000001
|
|
|
+#define EROFS_FEATURE_INCOMPAT_COMPR_CFGS 0x00000002
|
|
|
+#define EROFS_FEATURE_INCOMPAT_BIG_PCLUSTER 0x00000002
|
|
|
+#define EROFS_FEATURE_INCOMPAT_CHUNKED_FILE 0x00000004
|
|
|
+#define EROFS_FEATURE_INCOMPAT_DEVICE_TABLE 0x00000008
|
|
|
+#define EROFS_ALL_FEATURE_INCOMPAT \
|
|
|
+ (EROFS_FEATURE_INCOMPAT_LZ4_0PADDING | \
|
|
|
+ EROFS_FEATURE_INCOMPAT_COMPR_CFGS | \
|
|
|
+ EROFS_FEATURE_INCOMPAT_BIG_PCLUSTER | \
|
|
|
+ EROFS_FEATURE_INCOMPAT_CHUNKED_FILE | \
|
|
|
+ EROFS_FEATURE_INCOMPAT_DEVICE_TABLE)
|
|
|
+
|
|
|
+#define EROFS_SB_EXTSLOT_SIZE 16
|
|
|
+
|
|
|
+struct erofs_deviceslot {
|
|
|
+ union {
|
|
|
+ u8 uuid[16]; /* used for device manager later */
|
|
|
+ u8 userdata[64]; /* digest(sha256), etc. */
|
|
|
+ } u;
|
|
|
+ __le32 blocks; /* total fs blocks of this device */
|
|
|
+ __le32 mapped_blkaddr; /* map starting at mapped_blkaddr */
|
|
|
+ u8 reserved[56];
|
|
|
+};
|
|
|
+
|
|
|
+#define EROFS_DEVT_SLOT_SIZE sizeof(struct erofs_deviceslot)
|
|
|
+
|
|
|
+/* erofs on-disk super block (currently 128 bytes) */
|
|
|
+struct erofs_super_block {
|
|
|
+ __le32 magic; /* file system magic number */
|
|
|
+ __le32 checksum; /* crc32c(super_block) */
|
|
|
+ __le32 feature_compat;
|
|
|
+ __u8 blkszbits; /* support block_size == PAGE_SIZE only */
|
|
|
+ __u8 sb_extslots; /* superblock size = 128 + sb_extslots * 16 */
|
|
|
+
|
|
|
+ __le16 root_nid; /* nid of root directory */
|
|
|
+ __le64 inos; /* total valid ino # (== f_files - f_favail) */
|
|
|
+
|
|
|
+ __le64 build_time; /* inode v1 time derivation */
|
|
|
+ __le32 build_time_nsec; /* inode v1 time derivation in nano scale */
|
|
|
+ __le32 blocks; /* used for statfs */
|
|
|
+ __le32 meta_blkaddr; /* start block address of metadata area */
|
|
|
+ __le32 xattr_blkaddr; /* start block address of shared xattr area */
|
|
|
+ __u8 uuid[16]; /* 128-bit uuid for volume */
|
|
|
+ __u8 volume_name[16]; /* volume name */
|
|
|
+ __le32 feature_incompat;
|
|
|
+ union {
|
|
|
+ /* bitmap for available compression algorithms */
|
|
|
+ __le16 available_compr_algs;
|
|
|
+ /* customized sliding window size instead of 64k by default */
|
|
|
+ __le16 lz4_max_distance;
|
|
|
+ } __packed u1;
|
|
|
+ __le16 extra_devices; /* # of devices besides the primary device */
|
|
|
+ __le16 devt_slotoff; /* startoff = devt_slotoff * devt_slotsize */
|
|
|
+ __u8 reserved2[38];
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+ * erofs inode datalayout (i_format in on-disk inode):
|
|
|
+ * 0 - inode plain without inline data A:
|
|
|
+ * inode, [xattrs], ... | ... | no-holed data
|
|
|
+ * 1 - inode VLE compression B (legacy):
|
|
|
+ * inode, [xattrs], extents ... | ...
|
|
|
+ * 2 - inode plain with inline data C:
|
|
|
+ * inode, [xattrs], last_inline_data, ... | ... | no-holed data
|
|
|
+ * 3 - inode compression D:
|
|
|
+ * inode, [xattrs], map_header, extents ... | ...
|
|
|
+ * 4 - inode chunk-based E:
|
|
|
+ * inode, [xattrs], chunk indexes ... | ...
|
|
|
+ * 5~7 - reserved
|
|
|
+ */
|
|
|
+enum {
|
|
|
+ EROFS_INODE_FLAT_PLAIN = 0,
|
|
|
+ EROFS_INODE_FLAT_COMPRESSION_LEGACY = 1,
|
|
|
+ EROFS_INODE_FLAT_INLINE = 2,
|
|
|
+ EROFS_INODE_FLAT_COMPRESSION = 3,
|
|
|
+ EROFS_INODE_CHUNK_BASED = 4,
|
|
|
+ EROFS_INODE_DATALAYOUT_MAX
|
|
|
+};
|
|
|
+
|
|
|
+static inline bool erofs_inode_is_data_compressed(unsigned int datamode)
|
|
|
+{
|
|
|
+ return datamode == EROFS_INODE_FLAT_COMPRESSION ||
|
|
|
+ datamode == EROFS_INODE_FLAT_COMPRESSION_LEGACY;
|
|
|
+}
|
|
|
+
|
|
|
+/* bit definitions of inode i_advise */
|
|
|
+#define EROFS_I_VERSION_BITS 1
|
|
|
+#define EROFS_I_DATALAYOUT_BITS 3
|
|
|
+
|
|
|
+#define EROFS_I_VERSION_BIT 0
|
|
|
+#define EROFS_I_DATALAYOUT_BIT 1
|
|
|
+
|
|
|
+#define EROFS_I_ALL \
|
|
|
+ ((1 << (EROFS_I_DATALAYOUT_BIT + EROFS_I_DATALAYOUT_BITS)) - 1)
|
|
|
+
|
|
|
+/* indicate chunk blkbits, thus 'chunksize = blocksize << chunk blkbits' */
|
|
|
+#define EROFS_CHUNK_FORMAT_BLKBITS_MASK 0x001F
|
|
|
+/* with chunk indexes or just a 4-byte blkaddr array */
|
|
|
+#define EROFS_CHUNK_FORMAT_INDEXES 0x0020
|
|
|
+
|
|
|
+#define EROFS_CHUNK_FORMAT_ALL \
|
|
|
+ (EROFS_CHUNK_FORMAT_BLKBITS_MASK | EROFS_CHUNK_FORMAT_INDEXES)
|
|
|
+
|
|
|
+struct erofs_inode_chunk_info {
|
|
|
+ __le16 format; /* chunk blkbits, etc. */
|
|
|
+ __le16 reserved;
|
|
|
+};
|
|
|
+
|
|
|
+/* 32-byte reduced form of an ondisk inode */
|
|
|
+struct erofs_inode_compact {
|
|
|
+ __le16 i_format; /* inode format hints */
|
|
|
+
|
|
|
+/* 1 header + n-1 * 4 bytes inline xattr to keep continuity */
|
|
|
+ __le16 i_xattr_icount;
|
|
|
+ __le16 i_mode;
|
|
|
+ __le16 i_nlink;
|
|
|
+ __le32 i_size;
|
|
|
+ __le32 i_reserved;
|
|
|
+ union {
|
|
|
+ /* file total compressed blocks for data mapping 1 */
|
|
|
+ __le32 compressed_blocks;
|
|
|
+ __le32 raw_blkaddr;
|
|
|
+
|
|
|
+ /* for device files, used to indicate old/new device # */
|
|
|
+ __le32 rdev;
|
|
|
+
|
|
|
+ /* for chunk-based files, it contains the summary info */
|
|
|
+ struct erofs_inode_chunk_info c;
|
|
|
+ } i_u;
|
|
|
+ __le32 i_ino; /* only used for 32-bit stat compatibility */
|
|
|
+ __le16 i_uid;
|
|
|
+ __le16 i_gid;
|
|
|
+ __le32 i_reserved2;
|
|
|
+};
|
|
|
+
|
|
|
+/* 32 bytes on-disk inode */
|
|
|
+#define EROFS_INODE_LAYOUT_COMPACT 0
|
|
|
+/* 64 bytes on-disk inode */
|
|
|
+#define EROFS_INODE_LAYOUT_EXTENDED 1
|
|
|
+
|
|
|
+/* 64-byte complete form of an ondisk inode */
|
|
|
+struct erofs_inode_extended {
|
|
|
+ __le16 i_format; /* inode format hints */
|
|
|
+
|
|
|
+/* 1 header + n-1 * 4 bytes inline xattr to keep continuity */
|
|
|
+ __le16 i_xattr_icount;
|
|
|
+ __le16 i_mode;
|
|
|
+ __le16 i_reserved;
|
|
|
+ __le64 i_size;
|
|
|
+ union {
|
|
|
+ /* file total compressed blocks for data mapping 1 */
|
|
|
+ __le32 compressed_blocks;
|
|
|
+ __le32 raw_blkaddr;
|
|
|
+
|
|
|
+ /* for device files, used to indicate old/new device # */
|
|
|
+ __le32 rdev;
|
|
|
+
|
|
|
+ /* for chunk-based files, it contains the summary info */
|
|
|
+ struct erofs_inode_chunk_info c;
|
|
|
+ } i_u;
|
|
|
+
|
|
|
+ /* only used for 32-bit stat compatibility */
|
|
|
+ __le32 i_ino;
|
|
|
+
|
|
|
+ __le32 i_uid;
|
|
|
+ __le32 i_gid;
|
|
|
+ __le64 i_ctime;
|
|
|
+ __le32 i_ctime_nsec;
|
|
|
+ __le32 i_nlink;
|
|
|
+ __u8 i_reserved2[16];
|
|
|
+};
|
|
|
+
|
|
|
+#define EROFS_MAX_SHARED_XATTRS (128)
|
|
|
+/* h_shared_count between 129 ... 255 are special # */
|
|
|
+#define EROFS_SHARED_XATTR_EXTENT (255)
|
|
|
+
|
|
|
+/*
|
|
|
+ * inline xattrs (n == i_xattr_icount):
|
|
|
+ * erofs_xattr_ibody_header(1) + (n - 1) * 4 bytes
|
|
|
+ * 12 bytes / \
|
|
|
+ * / \
|
|
|
+ * /-----------------------\
|
|
|
+ * | erofs_xattr_entries+ |
|
|
|
+ * +-----------------------+
|
|
|
+ * inline xattrs must starts in erofs_xattr_ibody_header,
|
|
|
+ * for read-only fs, no need to introduce h_refcount
|
|
|
+ */
|
|
|
+struct erofs_xattr_ibody_header {
|
|
|
+ __le32 h_reserved;
|
|
|
+ __u8 h_shared_count;
|
|
|
+ __u8 h_reserved2[7];
|
|
|
+ __le32 h_shared_xattrs[0]; /* shared xattr id array */
|
|
|
+};
|
|
|
+
|
|
|
+/* Name indexes */
|
|
|
+#define EROFS_XATTR_INDEX_USER 1
|
|
|
+#define EROFS_XATTR_INDEX_POSIX_ACL_ACCESS 2
|
|
|
+#define EROFS_XATTR_INDEX_POSIX_ACL_DEFAULT 3
|
|
|
+#define EROFS_XATTR_INDEX_TRUSTED 4
|
|
|
+#define EROFS_XATTR_INDEX_LUSTRE 5
|
|
|
+#define EROFS_XATTR_INDEX_SECURITY 6
|
|
|
+
|
|
|
+/* xattr entry (for both inline & shared xattrs) */
|
|
|
+struct erofs_xattr_entry {
|
|
|
+ __u8 e_name_len; /* length of name */
|
|
|
+ __u8 e_name_index; /* attribute name index */
|
|
|
+ __le16 e_value_size; /* size of attribute value */
|
|
|
+ /* followed by e_name and e_value */
|
|
|
+ char e_name[0]; /* attribute name */
|
|
|
+};
|
|
|
+
|
|
|
+static inline unsigned int erofs_xattr_ibody_size(__le16 i_xattr_icount)
|
|
|
+{
|
|
|
+ if (!i_xattr_icount)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ return sizeof(struct erofs_xattr_ibody_header) +
|
|
|
+ sizeof(__u32) * (le16_to_cpu(i_xattr_icount) - 1);
|
|
|
+}
|
|
|
+
|
|
|
+#define EROFS_XATTR_ALIGN(size) round_up(size, sizeof(struct erofs_xattr_entry))
|
|
|
+
|
|
|
+static inline unsigned int erofs_xattr_entry_size(struct erofs_xattr_entry *e)
|
|
|
+{
|
|
|
+ return EROFS_XATTR_ALIGN(sizeof(struct erofs_xattr_entry) +
|
|
|
+ e->e_name_len + le16_to_cpu(e->e_value_size));
|
|
|
+}
|
|
|
+
|
|
|
+/* represent a zeroed chunk (hole) */
|
|
|
+#define EROFS_NULL_ADDR -1
|
|
|
+
|
|
|
+/* 4-byte block address array */
|
|
|
+#define EROFS_BLOCK_MAP_ENTRY_SIZE sizeof(__le32)
|
|
|
+
|
|
|
+/* 8-byte inode chunk indexes */
|
|
|
+struct erofs_inode_chunk_index {
|
|
|
+ __le16 advise; /* always 0, don't care for now */
|
|
|
+ __le16 device_id; /* back-end storage id (with bits masked) */
|
|
|
+ __le32 blkaddr; /* start block address of this inode chunk */
|
|
|
+};
|
|
|
+
|
|
|
+/* maximum supported size of a physical compression cluster */
|
|
|
+#define Z_EROFS_PCLUSTER_MAX_SIZE (1024 * 1024)
|
|
|
+
|
|
|
+/* available compression algorithm types (for h_algorithmtype) */
|
|
|
+enum {
|
|
|
+ Z_EROFS_COMPRESSION_LZ4 = 0,
|
|
|
+ Z_EROFS_COMPRESSION_LZMA = 1,
|
|
|
+ Z_EROFS_COMPRESSION_MAX
|
|
|
+};
|
|
|
+
|
|
|
+#define Z_EROFS_ALL_COMPR_ALGS (1 << (Z_EROFS_COMPRESSION_MAX - 1))
|
|
|
+
|
|
|
+/* 14 bytes (+ length field = 16 bytes) */
|
|
|
+struct z_erofs_lz4_cfgs {
|
|
|
+ __le16 max_distance;
|
|
|
+ __le16 max_pclusterblks;
|
|
|
+ u8 reserved[10];
|
|
|
+} __packed;
|
|
|
+
|
|
|
+/* 14 bytes (+ length field = 16 bytes) */
|
|
|
+struct z_erofs_lzma_cfgs {
|
|
|
+ __le32 dict_size;
|
|
|
+ __le16 format;
|
|
|
+ u8 reserved[8];
|
|
|
+} __packed;
|
|
|
+#define Z_EROFS_LZMA_MAX_DICT_SIZE (8 * Z_EROFS_PCLUSTER_MAX_SIZE)
|
|
|
+
|
|
|
+/*
|
|
|
+ * bit 0 : COMPACTED_2B indexes (0 - off; 1 - on)
|
|
|
+ * e.g. for 4k logical cluster size, 4B if compacted 2B is off;
|
|
|
+ * (4B) + 2B + (4B) if compacted 2B is on.
|
|
|
+ * bit 1 : HEAD1 big pcluster (0 - off; 1 - on)
|
|
|
+ * bit 2 : HEAD2 big pcluster (0 - off; 1 - on)
|
|
|
+ */
|
|
|
+#define Z_EROFS_ADVISE_COMPACTED_2B 0x0001
|
|
|
+#define Z_EROFS_ADVISE_BIG_PCLUSTER_1 0x0002
|
|
|
+#define Z_EROFS_ADVISE_BIG_PCLUSTER_2 0x0004
|
|
|
+
|
|
|
+struct z_erofs_map_header {
|
|
|
+ __le32 h_reserved1;
|
|
|
+ __le16 h_advise;
|
|
|
+ /*
|
|
|
+ * bit 0-3 : algorithm type of head 1 (logical cluster type 01);
|
|
|
+ * bit 4-7 : algorithm type of head 2 (logical cluster type 11).
|
|
|
+ */
|
|
|
+ __u8 h_algorithmtype;
|
|
|
+ /*
|
|
|
+ * bit 0-2 : logical cluster bits - 12, e.g. 0 for 4096;
|
|
|
+ * bit 3-7 : reserved.
|
|
|
+ */
|
|
|
+ __u8 h_clusterbits;
|
|
|
+};
|
|
|
+
|
|
|
+#define Z_EROFS_VLE_LEGACY_HEADER_PADDING 8
|
|
|
+
|
|
|
+/*
|
|
|
+ * Fixed-sized output compression ondisk Logical Extent cluster type:
|
|
|
+ * 0 - literal (uncompressed) cluster
|
|
|
+ * 1 - compressed cluster (for the head logical cluster)
|
|
|
+ * 2 - compressed cluster (for the other logical clusters)
|
|
|
+ *
|
|
|
+ * In detail,
|
|
|
+ * 0 - literal (uncompressed) cluster,
|
|
|
+ * di_advise = 0
|
|
|
+ * di_clusterofs = the literal data offset of the cluster
|
|
|
+ * di_blkaddr = the blkaddr of the literal cluster
|
|
|
+ *
|
|
|
+ * 1 - compressed cluster (for the head logical cluster)
|
|
|
+ * di_advise = 1
|
|
|
+ * di_clusterofs = the decompressed data offset of the cluster
|
|
|
+ * di_blkaddr = the blkaddr of the compressed cluster
|
|
|
+ *
|
|
|
+ * 2 - compressed cluster (for the other logical clusters)
|
|
|
+ * di_advise = 2
|
|
|
+ * di_clusterofs =
|
|
|
+ * the decompressed data offset in its own head cluster
|
|
|
+ * di_u.delta[0] = distance to its corresponding head cluster
|
|
|
+ * di_u.delta[1] = distance to its corresponding tail cluster
|
|
|
+ * (di_advise could be 0, 1 or 2)
|
|
|
+ */
|
|
|
+enum {
|
|
|
+ Z_EROFS_VLE_CLUSTER_TYPE_PLAIN = 0,
|
|
|
+ Z_EROFS_VLE_CLUSTER_TYPE_HEAD = 1,
|
|
|
+ Z_EROFS_VLE_CLUSTER_TYPE_NONHEAD = 2,
|
|
|
+ Z_EROFS_VLE_CLUSTER_TYPE_RESERVED = 3,
|
|
|
+ Z_EROFS_VLE_CLUSTER_TYPE_MAX
|
|
|
+};
|
|
|
+
|
|
|
+#define Z_EROFS_VLE_DI_CLUSTER_TYPE_BITS 2
|
|
|
+#define Z_EROFS_VLE_DI_CLUSTER_TYPE_BIT 0
|
|
|
+
|
|
|
+/*
|
|
|
+ * D0_CBLKCNT will be marked _only_ at the 1st non-head lcluster to store the
|
|
|
+ * compressed block count of a compressed extent (in logical clusters, aka.
|
|
|
+ * block count of a pcluster).
|
|
|
+ */
|
|
|
+#define Z_EROFS_VLE_DI_D0_CBLKCNT (1 << 11)
|
|
|
+
|
|
|
+struct z_erofs_vle_decompressed_index {
|
|
|
+ __le16 di_advise;
|
|
|
+ /* where to decompress in the head cluster */
|
|
|
+ __le16 di_clusterofs;
|
|
|
+
|
|
|
+ union {
|
|
|
+ /* for the head cluster */
|
|
|
+ __le32 blkaddr;
|
|
|
+ /*
|
|
|
+ * for the rest clusters
|
|
|
+ * eg. for 4k page-sized cluster, maximum 4K*64k = 256M)
|
|
|
+ * [0] - pointing to the head cluster
|
|
|
+ * [1] - pointing to the tail cluster
|
|
|
+ */
|
|
|
+ __le16 delta[2];
|
|
|
+ } di_u;
|
|
|
+};
|
|
|
+
|
|
|
+#define Z_EROFS_VLE_LEGACY_INDEX_ALIGN(size) \
|
|
|
+ (round_up(size, sizeof(struct z_erofs_vle_decompressed_index)) + \
|
|
|
+ sizeof(struct z_erofs_map_header) + Z_EROFS_VLE_LEGACY_HEADER_PADDING)
|
|
|
+
|
|
|
+#define Z_EROFS_VLE_EXTENT_ALIGN(size) round_up(size, \
|
|
|
+ sizeof(struct z_erofs_vle_decompressed_index))
|
|
|
+
|
|
|
+/* dirent sorts in alphabet order, thus we can do binary search */
|
|
|
+struct erofs_dirent {
|
|
|
+ __le64 nid; /* node number */
|
|
|
+ __le16 nameoff; /* start offset of file name */
|
|
|
+ __u8 file_type; /* file type */
|
|
|
+ __u8 reserved; /* reserved */
|
|
|
+} __packed;
|
|
|
+
|
|
|
+/* file types used in inode_info->flags */
|
|
|
+enum {
|
|
|
+ EROFS_FT_UNKNOWN,
|
|
|
+ EROFS_FT_REG_FILE,
|
|
|
+ EROFS_FT_DIR,
|
|
|
+ EROFS_FT_CHRDEV,
|
|
|
+ EROFS_FT_BLKDEV,
|
|
|
+ EROFS_FT_FIFO,
|
|
|
+ EROFS_FT_SOCK,
|
|
|
+ EROFS_FT_SYMLINK,
|
|
|
+ EROFS_FT_MAX
|
|
|
+};
|
|
|
+
|
|
|
+#define EROFS_NAME_LEN 255
|
|
|
+
|
|
|
+/* check the EROFS on-disk layout strictly at compile time */
|
|
|
+static inline void erofs_check_ondisk_layout_definitions(void)
|
|
|
+{
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_super_block) != 128);
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_inode_compact) != 32);
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_inode_extended) != 64);
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_xattr_ibody_header) != 12);
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_xattr_entry) != 4);
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_inode_chunk_info) != 4);
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_inode_chunk_index) != 8);
|
|
|
+ BUILD_BUG_ON(sizeof(struct z_erofs_map_header) != 8);
|
|
|
+ BUILD_BUG_ON(sizeof(struct z_erofs_vle_decompressed_index) != 8);
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_dirent) != 12);
|
|
|
+ /* keep in sync between 2 index structures for better extendibility */
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_inode_chunk_index) !=
|
|
|
+ sizeof(struct z_erofs_vle_decompressed_index));
|
|
|
+ BUILD_BUG_ON(sizeof(struct erofs_deviceslot) != 128);
|
|
|
+
|
|
|
+ BUILD_BUG_ON(BIT(Z_EROFS_VLE_DI_CLUSTER_TYPE_BITS) <
|
|
|
+ Z_EROFS_VLE_CLUSTER_TYPE_MAX - 1);
|
|
|
+}
|
|
|
+
|
|
|
+#endif
|