From 9ab4cfc599f2bb01d344682400024b046db1c524 Mon Sep 17 00:00:00 2001 From: bde Date: Sat, 1 Jan 2000 17:39:21 +0000 Subject: Merged changes in ext2_fs.h between Linux 1.2.2 and Linux 2.3.35. The main changes are: - many things are more dynamic; e.g., the inode size is a new parameter in the superblock instead of a constant. - extensions are controlled by new flags in the superblock. - directory entries may have a file type field. These changes are not used yet, except for a spelling change which affects ext2_cnv.c --- sys/gnu/ext2fs/ext2_fs.h | 218 +++++++++++++++++++++++++++++-------- sys/gnu/ext2fs/ext2_inode_cnv.c | 4 +- sys/gnu/fs/ext2fs/ext2_fs.h | 218 +++++++++++++++++++++++++++++-------- sys/gnu/fs/ext2fs/ext2_inode_cnv.c | 4 +- 4 files changed, 344 insertions(+), 100 deletions(-) diff --git a/sys/gnu/ext2fs/ext2_fs.h b/sys/gnu/ext2fs/ext2_fs.h index 448c8b5..c7262e9 100644 --- a/sys/gnu/ext2fs/ext2_fs.h +++ b/sys/gnu/ext2fs/ext2_fs.h @@ -61,30 +61,16 @@ #undef EXT2FS_DEBUG /* - * Define EXT2FS_DEBUG_CACHE to produce cache debug messages - */ -#undef EXT2FS_DEBUG_CACHE - -/* - * Define EXT2FS_CHECK_CACHE to add some checks to the name cache code - */ -#undef EXT2FS_CHECK_CACHE - -/* - * Define EXT2FS_PRE_02B_COMPAT to convert ext 2 fs prior to 0.2b - */ -#undef EXT2FS_PRE_02B_COMPAT - -/* * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files */ #define EXT2_PREALLOCATE +#define EXT2_DEFAULT_PREALLOC_BLOCKS 8 /* * The second extended file system version */ -#define EXT2FS_DATE "95/03/19" -#define EXT2FS_VERSION "0.5a" +#define EXT2FS_DATE "95/08/09" +#define EXT2FS_VERSION "0.5b" /* * Debug code @@ -108,12 +94,16 @@ #define EXT2_ACL_DATA_INO 4 /* ACL inode */ #define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */ #define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */ -#define EXT2_FIRST_INO 11 /* First non reserved inode */ + +/* First non-reserved inode for old ext2 filesystems */ +#define EXT2_GOOD_OLD_FIRST_INO 11 /* * The second extended file system magic number */ +#ifndef notyet #define EXT2_PRE_02B_MAGIC 0xEF51 +#endif #define EXT2_SUPER_MAGIC 0xEF53 /* @@ -142,18 +132,29 @@ #define EXT2_ACLE_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_acl_entry)) #define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32)) #ifdef __KERNEL__ -# define EXT2_BLOCK_SIZE_BITS(s) ((s)->u.ext2_sb.s_es->s_log_block_size + 10) +# define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) #else # define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) #endif -#if defined(__FreeBSD__) && defined(_KERNEL) -#define EXT2_INODES_PER_BLOCK(s) ((s)->s_inodes_per_block) +#ifdef notyet +#ifdef __KERNEL__ +#define EXT2_ADDR_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_addr_per_block_bits) +#define EXT2_INODE_SIZE(s) ((s)->u.ext2_sb.s_inode_size) +#define EXT2_FIRST_INO(s) ((s)->u.ext2_sb.s_first_ino) #else -#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_inode)) +#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ + EXT2_GOOD_OLD_INODE_SIZE : \ + (s)->s_inode_size) +#define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ + EXT2_GOOD_OLD_FIRST_INO : \ + (s)->s_first_ino) #endif - +#else /* !notyet */ +#define EXT2_INODES_PER_BLOCK(s) ((s)->s_inodes_per_block) /* Should be sizeof(struct ext2_inode): */ #define EXT2_INODE_SIZE 128 +#define EXT2_FIRST_INO 11 +#endif /* notyet */ /* * Macro-instructions used to manage fragments @@ -198,15 +199,6 @@ struct ext2_acl_entry /* Access Control List Entry */ /* * Structure of a blocks group descriptor */ -struct ext2_old_group_desc -{ - __u32 bg_block_bitmap; /* Blocks bitmap block */ - __u32 bg_inode_bitmap; /* Inodes bitmap block */ - __u32 bg_inode_table; /* Inodes table block */ - __u16 bg_free_blocks_count; /* Free blocks count */ - __u16 bg_free_inodes_count; /* Free inodes count */ -}; - struct ext2_group_desc { __u32 bg_block_bitmap; /* Blocks bitmap block */ @@ -226,6 +218,7 @@ struct ext2_group_desc # define EXT2_BLOCKS_PER_GROUP(s) ((s)->u.ext2_sb.s_blocks_per_group) # define EXT2_DESC_PER_BLOCK(s) ((s)->u.ext2_sb.s_desc_per_block) # define EXT2_INODES_PER_GROUP(s) ((s)->u.ext2_sb.s_inodes_per_group) +# define EXT2_DESC_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_desc_per_block_bits) #else # define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) # define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc)) @@ -252,6 +245,18 @@ struct ext2_group_desc #define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */ #define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */ #define EXT2_NODUMP_FL 0x00000040 /* do not dump file */ +#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */ +/* Reserved for compression usage... */ +#define EXT2_DIRTY_FL 0x00000100 +#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ +#define EXT2_NOCOMP_FL 0x00000400 /* Don't compress */ +#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */ +/* End compression flags --- maybe not all used */ +#define EXT2_BTREE_FL 0x00001000 /* btree format dir */ +#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ + +#define EXT2_FL_USER_VISIBLE 0x00001FFF /* User visible flags */ +#define EXT2_FL_USER_MODIFIABLE 0x000000FF /* User modifiable flags */ /* * ioctl commands @@ -273,17 +278,17 @@ struct ext2_group_desc * Structure of an inode on the disk */ struct ext2_inode { - __u16 i_mode; /* File mode */ - __u16 i_uid; /* Owner Uid */ - __u32 i_size; /* Size in bytes */ - __u32 i_atime; /* Access time */ - __u32 i_ctime; /* Creation time */ - __u32 i_mtime; /* Modification time */ - __u32 i_dtime; /* Deletion Time */ - __u16 i_gid; /* Group Id */ - __u16 i_links_count; /* Links count */ - __u32 i_blocks; /* Blocks count */ - __u32 i_flags; /* File flags */ + __u16 i_mode; /* File mode */ + __u16 i_uid; /* Owner Uid */ + __u32 i_size; /* Size in bytes */ + __u32 i_atime; /* Access time */ + __u32 i_ctime; /* Creation time */ + __u32 i_mtime; /* Modification time */ + __u32 i_dtime; /* Deletion Time */ + __u16 i_gid; /* Group Id */ + __u16 i_links_count; /* Links count */ + __u32 i_blocks; /* Blocks count */ + __u32 i_flags; /* File flags */ union { struct { __u32 l_i_reserved1; @@ -296,10 +301,10 @@ struct ext2_inode { } masix1; } osd1; /* OS dependent 1 */ __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */ - __u32 i_version; /* File version (for NFS) */ + __u32 i_generation; /* File version (for NFS) */ __u32 i_file_acl; /* File ACL */ __u32 i_dir_acl; /* Directory ACL */ - __u32 i_faddr; /* Fragment address */ + __u32 i_faddr; /* Fragment address */ union { struct { __u8 l_i_frag; /* Fragment number */ @@ -324,6 +329,8 @@ struct ext2_inode { } osd2; /* OS dependent 2 */ }; +#define i_size_high i_dir_acl + #if defined(__KERNEL__) || defined(__linux__) #define i_reserved1 osd1.linux1.l_i_reserved1 #define i_frag osd2.linux2.l_i_frag @@ -409,22 +416,108 @@ struct ext2_super_block { __u16 s_magic; /* Magic signature */ __u16 s_state; /* File system state */ __u16 s_errors; /* Behaviour when detecting errors */ - __u16 s_pad; + __u16 s_minor_rev_level; /* minor revision level */ __u32 s_lastcheck; /* time of last check */ __u32 s_checkinterval; /* max. time between checks */ __u32 s_creator_os; /* OS */ __u32 s_rev_level; /* Revision level */ __u16 s_def_resuid; /* Default uid for reserved blocks */ __u16 s_def_resgid; /* Default gid for reserved blocks */ - __u32 s_reserved[235]; /* Padding to the end of the block */ + /* + * These fields are for EXT2_DYNAMIC_REV superblocks only. + * + * Note: the difference between the compatible feature set and + * the incompatible feature set is that if there is a bit set + * in the incompatible feature set that the kernel doesn't + * know about, it should refuse to mount the filesystem. + * + * e2fsck's requirements are more strict; if it doesn't know + * about a feature in either the compatible or incompatible + * feature set, it must abort and not try to meddle with + * things it doesn't understand... + */ + __u32 s_first_ino; /* First non-reserved inode */ + __u16 s_inode_size; /* size of inode structure */ + __u16 s_block_group_nr; /* block group # of this superblock */ + __u32 s_feature_compat; /* compatible feature set */ + __u32 s_feature_incompat; /* incompatible feature set */ + __u32 s_feature_ro_compat; /* readonly-compatible feature set */ + __u8 s_uuid[16]; /* 128-bit uuid for volume */ + char s_volume_name[16]; /* volume name */ + char s_last_mounted[64]; /* directory where last mounted */ + __u32 s_algorithm_usage_bitmap; /* For compression */ + /* + * Performance hints. Directory preallocation should only + * happen if the EXT2_COMPAT_PREALLOC flag is on. + */ + __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ + __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ + __u16 s_padding1; + __u32 s_reserved[204]; /* Padding to the end of the block */ }; +#ifdef __KERNEL__ +#define EXT2_SB(sb) (&((sb)->u.ext2_sb)) +#else +/* Assume that user mode programs are passing in an ext2fs superblock, not + * a kernel struct super_block. This will allow us to call the feature-test + * macros from user land. */ +#define EXT2_SB(sb) (sb) +#endif + +/* + * Codes for operating systems + */ #define EXT2_OS_LINUX 0 #define EXT2_OS_HURD 1 #define EXT2_OS_MASIX 2 +#define EXT2_OS_FREEBSD 3 +#define EXT2_OS_LITES 4 + +/* + * Revision levels + */ +#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */ +#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ + +#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV +#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV + +#define EXT2_GOOD_OLD_INODE_SIZE 128 -#define EXT2_CURRENT_REV 0 +/* + * Feature set definitions + */ + +#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_compat & (mask) ) +#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_ro_compat & (mask) ) +#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_incompat & (mask) ) + +#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 +#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 +#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 +#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 + +#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 +#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 + +#define EXT2_FEATURE_COMPAT_SUPP 0 +#define EXT2_FEATURE_INCOMPAT_SUPP EXT2_FEATURE_INCOMPAT_FILETYPE +#ifdef notyet +#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT2_FEATURE_RO_COMPAT_BTREE_DIR) +#else +#define EXT2_FEATURE_RO_COMPAT_SUPP 0 +#endif + +/* + * Default values for user and/or group using reserved blocks + */ #define EXT2_DEF_RESUID 0 #define EXT2_DEF_RESGID 0 @@ -441,6 +534,35 @@ struct ext2_dir_entry { }; /* + * The new version of the directory entry. Since EXT2 structures are + * stored in intel byte order, and the name_len field could never be + * bigger than 255 chars, it's safe to reclaim the extra byte for the + * file_type field. + */ +struct ext2_dir_entry_2 { + __u32 inode; /* Inode number */ + __u16 rec_len; /* Directory entry length */ + __u8 name_len; /* Name length */ + __u8 file_type; + char name[EXT2_NAME_LEN]; /* File name */ +}; + +/* + * Ext2 directory file types. Only the low 3 bits are used. The + * other bits are reserved for now. + */ +#define EXT2_FT_UNKNOWN 0 +#define EXT2_FT_REG_FILE 1 +#define EXT2_FT_DIR 2 +#define EXT2_FT_CHRDEV 3 +#define EXT2_FT_BLKDEV 4 +#define EXT2_FT_FIFO 5 +#define EXT2_FT_SOCK 6 +#define EXT2_FT_SYMLINK 7 + +#define EXT2_FT_MAX 8 + +/* * EXT2_DIR_PAD defines the directory entries boundaries * * NOTE: It must be a multiple of 4 diff --git a/sys/gnu/ext2fs/ext2_inode_cnv.c b/sys/gnu/ext2fs/ext2_inode_cnv.c index ab8ceb1..3e8e0ff 100644 --- a/sys/gnu/ext2fs/ext2_inode_cnv.c +++ b/sys/gnu/ext2fs/ext2_inode_cnv.c @@ -112,7 +112,7 @@ ext2_ei2di(ei, di) di->di_flags |= (ei->i_flags & EXT2_APPEND_FL) ? APPEND : 0; di->di_flags |= (ei->i_flags & EXT2_IMMUTABLE_FL) ? IMMUTABLE : 0; di->di_blocks = ei->i_blocks; - di->di_gen = ei->i_version; /* XXX is that true ??? */ + di->di_gen = ei->i_generation; di->di_uid = ei->i_uid; di->di_gid = ei->i_gid; /* XXX use memcpy */ @@ -149,7 +149,7 @@ ext2_di2ei(di, ei) ei->i_flags |= (di->di_flags & IMMUTABLE) ? EXT2_IMMUTABLE_FL: 0; ei->i_blocks = di->di_blocks; - ei->i_version = di->di_gen; /* XXX is that true ??? */ + ei->i_generation = di->di_gen; ei->i_uid = di->di_uid; ei->i_gid = di->di_gid; /* XXX use memcpy */ diff --git a/sys/gnu/fs/ext2fs/ext2_fs.h b/sys/gnu/fs/ext2fs/ext2_fs.h index 448c8b5..c7262e9 100644 --- a/sys/gnu/fs/ext2fs/ext2_fs.h +++ b/sys/gnu/fs/ext2fs/ext2_fs.h @@ -61,30 +61,16 @@ #undef EXT2FS_DEBUG /* - * Define EXT2FS_DEBUG_CACHE to produce cache debug messages - */ -#undef EXT2FS_DEBUG_CACHE - -/* - * Define EXT2FS_CHECK_CACHE to add some checks to the name cache code - */ -#undef EXT2FS_CHECK_CACHE - -/* - * Define EXT2FS_PRE_02B_COMPAT to convert ext 2 fs prior to 0.2b - */ -#undef EXT2FS_PRE_02B_COMPAT - -/* * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files */ #define EXT2_PREALLOCATE +#define EXT2_DEFAULT_PREALLOC_BLOCKS 8 /* * The second extended file system version */ -#define EXT2FS_DATE "95/03/19" -#define EXT2FS_VERSION "0.5a" +#define EXT2FS_DATE "95/08/09" +#define EXT2FS_VERSION "0.5b" /* * Debug code @@ -108,12 +94,16 @@ #define EXT2_ACL_DATA_INO 4 /* ACL inode */ #define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */ #define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */ -#define EXT2_FIRST_INO 11 /* First non reserved inode */ + +/* First non-reserved inode for old ext2 filesystems */ +#define EXT2_GOOD_OLD_FIRST_INO 11 /* * The second extended file system magic number */ +#ifndef notyet #define EXT2_PRE_02B_MAGIC 0xEF51 +#endif #define EXT2_SUPER_MAGIC 0xEF53 /* @@ -142,18 +132,29 @@ #define EXT2_ACLE_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_acl_entry)) #define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32)) #ifdef __KERNEL__ -# define EXT2_BLOCK_SIZE_BITS(s) ((s)->u.ext2_sb.s_es->s_log_block_size + 10) +# define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) #else # define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) #endif -#if defined(__FreeBSD__) && defined(_KERNEL) -#define EXT2_INODES_PER_BLOCK(s) ((s)->s_inodes_per_block) +#ifdef notyet +#ifdef __KERNEL__ +#define EXT2_ADDR_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_addr_per_block_bits) +#define EXT2_INODE_SIZE(s) ((s)->u.ext2_sb.s_inode_size) +#define EXT2_FIRST_INO(s) ((s)->u.ext2_sb.s_first_ino) #else -#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_inode)) +#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ + EXT2_GOOD_OLD_INODE_SIZE : \ + (s)->s_inode_size) +#define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ + EXT2_GOOD_OLD_FIRST_INO : \ + (s)->s_first_ino) #endif - +#else /* !notyet */ +#define EXT2_INODES_PER_BLOCK(s) ((s)->s_inodes_per_block) /* Should be sizeof(struct ext2_inode): */ #define EXT2_INODE_SIZE 128 +#define EXT2_FIRST_INO 11 +#endif /* notyet */ /* * Macro-instructions used to manage fragments @@ -198,15 +199,6 @@ struct ext2_acl_entry /* Access Control List Entry */ /* * Structure of a blocks group descriptor */ -struct ext2_old_group_desc -{ - __u32 bg_block_bitmap; /* Blocks bitmap block */ - __u32 bg_inode_bitmap; /* Inodes bitmap block */ - __u32 bg_inode_table; /* Inodes table block */ - __u16 bg_free_blocks_count; /* Free blocks count */ - __u16 bg_free_inodes_count; /* Free inodes count */ -}; - struct ext2_group_desc { __u32 bg_block_bitmap; /* Blocks bitmap block */ @@ -226,6 +218,7 @@ struct ext2_group_desc # define EXT2_BLOCKS_PER_GROUP(s) ((s)->u.ext2_sb.s_blocks_per_group) # define EXT2_DESC_PER_BLOCK(s) ((s)->u.ext2_sb.s_desc_per_block) # define EXT2_INODES_PER_GROUP(s) ((s)->u.ext2_sb.s_inodes_per_group) +# define EXT2_DESC_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_desc_per_block_bits) #else # define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) # define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc)) @@ -252,6 +245,18 @@ struct ext2_group_desc #define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */ #define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */ #define EXT2_NODUMP_FL 0x00000040 /* do not dump file */ +#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */ +/* Reserved for compression usage... */ +#define EXT2_DIRTY_FL 0x00000100 +#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ +#define EXT2_NOCOMP_FL 0x00000400 /* Don't compress */ +#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */ +/* End compression flags --- maybe not all used */ +#define EXT2_BTREE_FL 0x00001000 /* btree format dir */ +#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ + +#define EXT2_FL_USER_VISIBLE 0x00001FFF /* User visible flags */ +#define EXT2_FL_USER_MODIFIABLE 0x000000FF /* User modifiable flags */ /* * ioctl commands @@ -273,17 +278,17 @@ struct ext2_group_desc * Structure of an inode on the disk */ struct ext2_inode { - __u16 i_mode; /* File mode */ - __u16 i_uid; /* Owner Uid */ - __u32 i_size; /* Size in bytes */ - __u32 i_atime; /* Access time */ - __u32 i_ctime; /* Creation time */ - __u32 i_mtime; /* Modification time */ - __u32 i_dtime; /* Deletion Time */ - __u16 i_gid; /* Group Id */ - __u16 i_links_count; /* Links count */ - __u32 i_blocks; /* Blocks count */ - __u32 i_flags; /* File flags */ + __u16 i_mode; /* File mode */ + __u16 i_uid; /* Owner Uid */ + __u32 i_size; /* Size in bytes */ + __u32 i_atime; /* Access time */ + __u32 i_ctime; /* Creation time */ + __u32 i_mtime; /* Modification time */ + __u32 i_dtime; /* Deletion Time */ + __u16 i_gid; /* Group Id */ + __u16 i_links_count; /* Links count */ + __u32 i_blocks; /* Blocks count */ + __u32 i_flags; /* File flags */ union { struct { __u32 l_i_reserved1; @@ -296,10 +301,10 @@ struct ext2_inode { } masix1; } osd1; /* OS dependent 1 */ __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */ - __u32 i_version; /* File version (for NFS) */ + __u32 i_generation; /* File version (for NFS) */ __u32 i_file_acl; /* File ACL */ __u32 i_dir_acl; /* Directory ACL */ - __u32 i_faddr; /* Fragment address */ + __u32 i_faddr; /* Fragment address */ union { struct { __u8 l_i_frag; /* Fragment number */ @@ -324,6 +329,8 @@ struct ext2_inode { } osd2; /* OS dependent 2 */ }; +#define i_size_high i_dir_acl + #if defined(__KERNEL__) || defined(__linux__) #define i_reserved1 osd1.linux1.l_i_reserved1 #define i_frag osd2.linux2.l_i_frag @@ -409,22 +416,108 @@ struct ext2_super_block { __u16 s_magic; /* Magic signature */ __u16 s_state; /* File system state */ __u16 s_errors; /* Behaviour when detecting errors */ - __u16 s_pad; + __u16 s_minor_rev_level; /* minor revision level */ __u32 s_lastcheck; /* time of last check */ __u32 s_checkinterval; /* max. time between checks */ __u32 s_creator_os; /* OS */ __u32 s_rev_level; /* Revision level */ __u16 s_def_resuid; /* Default uid for reserved blocks */ __u16 s_def_resgid; /* Default gid for reserved blocks */ - __u32 s_reserved[235]; /* Padding to the end of the block */ + /* + * These fields are for EXT2_DYNAMIC_REV superblocks only. + * + * Note: the difference between the compatible feature set and + * the incompatible feature set is that if there is a bit set + * in the incompatible feature set that the kernel doesn't + * know about, it should refuse to mount the filesystem. + * + * e2fsck's requirements are more strict; if it doesn't know + * about a feature in either the compatible or incompatible + * feature set, it must abort and not try to meddle with + * things it doesn't understand... + */ + __u32 s_first_ino; /* First non-reserved inode */ + __u16 s_inode_size; /* size of inode structure */ + __u16 s_block_group_nr; /* block group # of this superblock */ + __u32 s_feature_compat; /* compatible feature set */ + __u32 s_feature_incompat; /* incompatible feature set */ + __u32 s_feature_ro_compat; /* readonly-compatible feature set */ + __u8 s_uuid[16]; /* 128-bit uuid for volume */ + char s_volume_name[16]; /* volume name */ + char s_last_mounted[64]; /* directory where last mounted */ + __u32 s_algorithm_usage_bitmap; /* For compression */ + /* + * Performance hints. Directory preallocation should only + * happen if the EXT2_COMPAT_PREALLOC flag is on. + */ + __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ + __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ + __u16 s_padding1; + __u32 s_reserved[204]; /* Padding to the end of the block */ }; +#ifdef __KERNEL__ +#define EXT2_SB(sb) (&((sb)->u.ext2_sb)) +#else +/* Assume that user mode programs are passing in an ext2fs superblock, not + * a kernel struct super_block. This will allow us to call the feature-test + * macros from user land. */ +#define EXT2_SB(sb) (sb) +#endif + +/* + * Codes for operating systems + */ #define EXT2_OS_LINUX 0 #define EXT2_OS_HURD 1 #define EXT2_OS_MASIX 2 +#define EXT2_OS_FREEBSD 3 +#define EXT2_OS_LITES 4 + +/* + * Revision levels + */ +#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */ +#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ + +#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV +#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV + +#define EXT2_GOOD_OLD_INODE_SIZE 128 -#define EXT2_CURRENT_REV 0 +/* + * Feature set definitions + */ + +#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_compat & (mask) ) +#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_ro_compat & (mask) ) +#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_incompat & (mask) ) + +#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 +#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 +#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 +#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 + +#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 +#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 + +#define EXT2_FEATURE_COMPAT_SUPP 0 +#define EXT2_FEATURE_INCOMPAT_SUPP EXT2_FEATURE_INCOMPAT_FILETYPE +#ifdef notyet +#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT2_FEATURE_RO_COMPAT_BTREE_DIR) +#else +#define EXT2_FEATURE_RO_COMPAT_SUPP 0 +#endif + +/* + * Default values for user and/or group using reserved blocks + */ #define EXT2_DEF_RESUID 0 #define EXT2_DEF_RESGID 0 @@ -441,6 +534,35 @@ struct ext2_dir_entry { }; /* + * The new version of the directory entry. Since EXT2 structures are + * stored in intel byte order, and the name_len field could never be + * bigger than 255 chars, it's safe to reclaim the extra byte for the + * file_type field. + */ +struct ext2_dir_entry_2 { + __u32 inode; /* Inode number */ + __u16 rec_len; /* Directory entry length */ + __u8 name_len; /* Name length */ + __u8 file_type; + char name[EXT2_NAME_LEN]; /* File name */ +}; + +/* + * Ext2 directory file types. Only the low 3 bits are used. The + * other bits are reserved for now. + */ +#define EXT2_FT_UNKNOWN 0 +#define EXT2_FT_REG_FILE 1 +#define EXT2_FT_DIR 2 +#define EXT2_FT_CHRDEV 3 +#define EXT2_FT_BLKDEV 4 +#define EXT2_FT_FIFO 5 +#define EXT2_FT_SOCK 6 +#define EXT2_FT_SYMLINK 7 + +#define EXT2_FT_MAX 8 + +/* * EXT2_DIR_PAD defines the directory entries boundaries * * NOTE: It must be a multiple of 4 diff --git a/sys/gnu/fs/ext2fs/ext2_inode_cnv.c b/sys/gnu/fs/ext2fs/ext2_inode_cnv.c index ab8ceb1..3e8e0ff 100644 --- a/sys/gnu/fs/ext2fs/ext2_inode_cnv.c +++ b/sys/gnu/fs/ext2fs/ext2_inode_cnv.c @@ -112,7 +112,7 @@ ext2_ei2di(ei, di) di->di_flags |= (ei->i_flags & EXT2_APPEND_FL) ? APPEND : 0; di->di_flags |= (ei->i_flags & EXT2_IMMUTABLE_FL) ? IMMUTABLE : 0; di->di_blocks = ei->i_blocks; - di->di_gen = ei->i_version; /* XXX is that true ??? */ + di->di_gen = ei->i_generation; di->di_uid = ei->i_uid; di->di_gid = ei->i_gid; /* XXX use memcpy */ @@ -149,7 +149,7 @@ ext2_di2ei(di, ei) ei->i_flags |= (di->di_flags & IMMUTABLE) ? EXT2_IMMUTABLE_FL: 0; ei->i_blocks = di->di_blocks; - ei->i_version = di->di_gen; /* XXX is that true ??? */ + ei->i_generation = di->di_gen; ei->i_uid = di->di_uid; ei->i_gid = di->di_gid; /* XXX use memcpy */ -- cgit v1.1