diff options
Diffstat (limited to 'ext2fs')
| -rw-r--r-- | ext2fs/ext2_fs.h | 143 | ||||
| -rw-r--r-- | ext2fs/ext2_fs_i.h | 4 | ||||
| -rw-r--r-- | ext2fs/ext2fs.h | 7 |
3 files changed, 125 insertions, 29 deletions
diff --git a/ext2fs/ext2_fs.h b/ext2fs/ext2_fs.h index 774607f5..feeecea9 100644 --- a/ext2fs/ext2_fs.h +++ b/ext2fs/ext2_fs.h @@ -16,6 +16,8 @@ #ifndef _LINUX_EXT2_FS_H #define _LINUX_EXT2_FS_H +/* #include <linux/types.h> */ + /* * The second extended filesystem constants/structures */ @@ -29,6 +31,7 @@ * 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 @@ -187,8 +190,19 @@ 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 */ @@ -224,7 +238,7 @@ 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 */ @@ -252,6 +266,8 @@ 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 @@ -265,7 +281,6 @@ struct ext2_inode { #define i_fsize osd2.hurd2.h_i_fsize; #define i_uid_high osd2.hurd2.h_i_uid_high #define i_gid_high osd2.hurd2.h_i_gid_high -#define i_mode_high osd2.hurd2.h_i_mode_high #define i_author osd2.hurd2.h_i_author #endif @@ -350,7 +365,7 @@ struct ext2_super_block { * 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 @@ -362,9 +377,29 @@ struct ext2_super_block { __u32 s_feature_compat; /* compatible feature set */ __u32 s_feature_incompat; /* incompatible feature set */ __u32 s_feature_ro_compat; /* readonly-compatible feature set */ - __u32 s_reserved[230]; /* Padding to the end of the block */ + __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 */ @@ -386,6 +421,32 @@ struct ext2_super_block { #define EXT2_GOOD_OLD_INODE_SIZE 128 /* + * 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 +#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT2_FEATURE_RO_COMPAT_BTREE_DIR) + +/* * Default values for user and/or group using reserved blocks */ #define EXT2_DEF_RESUID 0 @@ -404,6 +465,35 @@ 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 @@ -413,13 +503,6 @@ struct ext2_dir_entry { #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \ ~EXT2_DIR_ROUND) -/* - * Feature set definitions --- none are defined as of now - */ -#define EXT2_FEATURE_COMPAT_SUPP 0 -#define EXT2_FEATURE_INCOMPAT_SUPP 0 -#define EXT2_FEATURE_RO_COMPAT_SUPP 0 - #ifdef __KERNEL__ /* * Function prototypes @@ -437,19 +520,23 @@ struct ext2_dir_entry { extern int ext2_permission (struct inode *, int); /* balloc.c */ +extern int ext2_group_sparse(int group); extern int ext2_new_block (const struct inode *, unsigned long, __u32 *, __u32 *, int *); extern void ext2_free_blocks (const struct inode *, unsigned long, unsigned long); extern unsigned long ext2_count_free_blocks (struct super_block *); extern void ext2_check_blocks_bitmap (struct super_block *); +extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb, + unsigned int block_group, + struct buffer_head ** bh); /* bitmap.c */ extern unsigned long ext2_count_free (struct buffer_head *, unsigned); /* dir.c */ extern int ext2_check_dir_entry (const char *, struct inode *, - struct ext2_dir_entry *, struct buffer_head *, + struct ext2_dir_entry_2 *, struct buffer_head *, unsigned long); /* file.c */ @@ -457,7 +544,7 @@ extern int ext2_read (struct inode *, struct file *, char *, int); extern int ext2_write (struct inode *, struct file *, char *, int); /* fsync.c */ -extern int ext2_sync_file (struct inode *, struct file *); +extern int ext2_sync_file (struct file *, struct dentry *); /* ialloc.c */ extern struct inode * ext2_new_inode (const struct inode *, int, int *); @@ -466,15 +553,18 @@ extern unsigned long ext2_count_free_inodes (struct super_block *); extern void ext2_check_inodes_bitmap (struct super_block *); /* inode.c */ -extern int ext2_bmap (struct inode *, int); +extern long ext2_bmap (struct inode *, long); +extern int ext2_get_block (struct inode *, long, struct buffer_head *, int); extern struct buffer_head * ext2_getblk (struct inode *, long, int, int *); +extern int ext2_getblk_block (struct inode *, long, int, int *, int *); extern struct buffer_head * ext2_bread (struct inode *, int, int, int *); extern int ext2_getcluster (struct inode * inode, long block); extern void ext2_read_inode (struct inode *); extern void ext2_write_inode (struct inode *); extern void ext2_put_inode (struct inode *); +extern void ext2_delete_inode (struct inode *); extern int ext2_sync_inode (struct inode *); extern void ext2_discard_prealloc (struct inode *); @@ -484,17 +574,16 @@ extern int ext2_ioctl (struct inode *, struct file *, unsigned int, /* namei.c */ extern void ext2_release (struct inode *, struct file *); -extern int ext2_lookup (struct inode *,const char *, int, struct inode **); -extern int ext2_create (struct inode *,const char *, int, int, - struct inode **); -extern int ext2_mkdir (struct inode *, const char *, int, int); -extern int ext2_rmdir (struct inode *, const char *, int); -extern int ext2_unlink (struct inode *, const char *, int); -extern int ext2_symlink (struct inode *, const char *, int, const char *); -extern int ext2_link (struct inode *, struct inode *, const char *, int); -extern int ext2_mknod (struct inode *, const char *, int, int, int); -extern int ext2_rename (struct inode *, const char *, int, - struct inode *, const char *, int, int); +extern struct dentry *ext2_lookup (struct inode *, struct dentry *); +extern int ext2_create (struct inode *,struct dentry *,int); +extern int ext2_mkdir (struct inode *,struct dentry *,int); +extern int ext2_rmdir (struct inode *,struct dentry *); +extern int ext2_unlink (struct inode *,struct dentry *); +extern int ext2_symlink (struct inode *,struct dentry *,const char *); +extern int ext2_link (struct dentry *, struct inode *, struct dentry *); +extern int ext2_mknod (struct inode *, struct dentry *, int, int); +extern int ext2_rename (struct inode *, struct dentry *, + struct inode *, struct dentry *); /* super.c */ extern void ext2_error (struct super_block *, const char *, const char *, ...) @@ -509,7 +598,7 @@ extern void ext2_write_super (struct super_block *); extern int ext2_remount (struct super_block *, int *, char *); extern struct super_block * ext2_read_super (struct super_block *,void *,int); extern int init_ext2_fs(void); -extern void ext2_statfs (struct super_block *, struct statfs *, int); +extern int ext2_statfs (struct super_block *, struct statfs *, int); /* truncate.c */ extern void ext2_truncate (struct inode *); diff --git a/ext2fs/ext2_fs_i.h b/ext2fs/ext2_fs_i.h index f3eca448..72bcd5c0 100644 --- a/ext2fs/ext2_fs_i.h +++ b/ext2fs/ext2_fs_i.h @@ -29,12 +29,14 @@ struct ext2_inode_info { __u32 i_file_acl; __u32 i_dir_acl; __u32 i_dtime; - __u32 i_version; + __u32 not_used_1; /* FIX: not used/ 2.2 placeholder */ __u32 i_block_group; __u32 i_next_alloc_block; __u32 i_next_alloc_goal; __u32 i_prealloc_block; __u32 i_prealloc_count; + __u32 i_high_size; + int i_new_inode:1; /* Is a freshly allocated inode */ }; #endif /* _LINUX_EXT2_FS_I */ diff --git a/ext2fs/ext2fs.h b/ext2fs/ext2fs.h index 55f3abec..2066cd28 100644 --- a/ext2fs/ext2fs.h +++ b/ext2fs/ext2fs.h @@ -42,6 +42,9 @@ typedef int8_t __s8; #include "ext2_fs.h" #include "ext2_fs_i.h" +#define i_mode_high osd2.hurd2.h_i_mode_high /* missing from ext2_fs.h */ + + /* If ext2_fs.h defined a debug routine, undef it and use our own. */ #undef ext2_debug @@ -433,7 +436,9 @@ void ext2_discard_prealloc (struct node *node); otherwise EINVAL is returned. */ error_t ext2_getblk (struct node *node, block_t block, int create, block_t *disk_block); -block_t ext2_new_block (block_t goal, block_t *prealloc_count, block_t *prealloc_block); +block_t ext2_new_block (block_t goal, + block_t prealloc_goal, + block_t *prealloc_count, block_t *prealloc_block); void ext2_free_blocks (block_t block, unsigned long count); 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