1999-08-23 Roland McGrath <roland@baalperazim.frob.com>

	* ext2_fs.h, ext2_fs_i.h: Replaced with Linux 2.3.14 versions.
	* ext2fs.h (i_mode_high): New macro, missing from ext_fs.h.

1 files changed, 116 insertions, 27 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 *);