diff options
Diffstat (limited to 'include/erofs/internal.h')
| -rw-r--r-- | include/erofs/internal.h | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/include/erofs/internal.h b/include/erofs/internal.h index 56627e9..6a70f11 100644 --- a/include/erofs/internal.h +++ b/include/erofs/internal.h @@ -1,4 +1,4 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ +/* SPDX-License-Identifier: GPL-2.0+ OR Apache-2.0 */ /* * Copyright (C) 2019 HUAWEI, Inc. * http://www.huawei.com/ @@ -36,7 +36,7 @@ typedef unsigned short umode_t; /* no obvious reason to support explicit PAGE_SIZE != 4096 for now */ #if PAGE_SIZE != 4096 -#error incompatible PAGE_SIZE is already defined +#warning EROFS may be incompatible on your platform #endif #ifndef PAGE_MASK @@ -131,6 +131,7 @@ EROFS_FEATURE_FUNCS(compr_cfgs, incompat, INCOMPAT_COMPR_CFGS) EROFS_FEATURE_FUNCS(big_pcluster, incompat, INCOMPAT_BIG_PCLUSTER) EROFS_FEATURE_FUNCS(chunked_file, incompat, INCOMPAT_CHUNKED_FILE) EROFS_FEATURE_FUNCS(device_table, incompat, INCOMPAT_DEVICE_TABLE) +EROFS_FEATURE_FUNCS(ztailpacking, incompat, INCOMPAT_ZTAILPACKING) EROFS_FEATURE_FUNCS(sb_chksum, compat, COMPAT_SB_CHKSUM) #define EROFS_I_EA_INITED (1 << 0) @@ -174,6 +175,7 @@ struct erofs_inode { unsigned char inode_isize; /* inline tail-end packing size */ unsigned short idata_size; + bool compressed_idata; unsigned int xattr_isize; unsigned int extent_isize; @@ -184,6 +186,10 @@ struct erofs_inode { void *idata; + /* (ztailpacking) in order to recover uncompressed EOF data */ + void *eof_tailraw; + unsigned int eof_tailrawsize; + union { void *compressmeta; void *chunkindexes; @@ -192,6 +198,9 @@ struct erofs_inode { uint8_t z_algorithmtype[2]; uint8_t z_logical_clusterbits; uint8_t z_physical_clusterblks; + uint64_t z_tailextent_headlcn; + unsigned int z_idataoff; +#define z_idata_size idata_size }; }; #ifdef WITH_ANDROID @@ -295,6 +304,7 @@ struct erofs_map_blocks { * approach instead if possible since it's more metadata lightweight.) */ #define EROFS_GET_BLOCKS_FIEMAP 0x0002 +#define EROFS_GET_BLOCKS_FINDTAIL 0x0008 enum { Z_EROFS_COMPRESSION_SHIFTED = Z_EROFS_COMPRESSION_MAX, @@ -320,6 +330,27 @@ int erofs_pread(struct erofs_inode *inode, char *buf, int erofs_map_blocks(struct erofs_inode *inode, struct erofs_map_blocks *map, int flags); int erofs_map_dev(struct erofs_sb_info *sbi, struct erofs_map_dev *map); + +static inline int erofs_get_occupied_size(const struct erofs_inode *inode, + erofs_off_t *size) +{ + *size = 0; + switch (inode->datalayout) { + case EROFS_INODE_FLAT_INLINE: + case EROFS_INODE_FLAT_PLAIN: + case EROFS_INODE_CHUNK_BASED: + *size = inode->i_size; + break; + case EROFS_INODE_FLAT_COMPRESSION_LEGACY: + case EROFS_INODE_FLAT_COMPRESSION: + *size = inode->u.i_blocks * EROFS_BLKSIZ; + break; + default: + return -ENOTSUP; + } + return 0; +} + /* zmap.c */ int z_erofs_fill_inode(struct erofs_inode *vi); int z_erofs_map_blocks_iter(struct erofs_inode *vi, |