X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/d0064d3ada3aa06af09a31af7462910731cc5346..af0b24db6f271ffe7dc8309e12da45fc4bcfb53e:/usr/src/sys/ufs/ffs/dinode.h

diff --git a/usr/src/sys/ufs/ffs/dinode.h b/usr/src/sys/ufs/ffs/dinode.h
index e3cfc6ddaf..de9b8536c9 100644
--- a/usr/src/sys/ufs/ffs/dinode.h
+++ b/usr/src/sys/ufs/ffs/dinode.h
@@ -1,90 +1,156 @@
-/*	dinode.h	3.1	%H%	*/
+/*	dinode.h	4.20	82/11/13	*/
 
 /*
- * The I node is the focus of all
- * file activity in unix. There is a unique
- * inode allocated for each active file,
- * each current directory, each mounted-on
- * file, text file, and the root. An inode is 'named'
- * by its dev/inumber pair. (iget/iget.c)
- * Data, from mode on, is read in
- * from permanent inode on volume.
+ * The I node is the focus of all file activity in UNIX.
+ * There is a unique inode allocated for each active file,
+ * each current directory, each mounted-on file, text file, and the root.
+ * An inode is 'named' by its dev/inumber pair. (iget/iget.c)
+ * Data in icommon is read in from permanent inode on volume.
  */
 
-#define	NADDR	13
-
-#define	NINDEX		15
-struct group
-{
-	short	g_state;
-	char	g_index;
-	char	g_rot;
-	struct	group	*g_group;
-	struct	inode	*g_inode;
-	struct	file	*g_file;
-	short	g_rotmask;
-	short	g_datq;
-	struct	chan *g_chans[NINDEX];
-};
-struct	inode
-{
-	char	i_flag;
-	char	i_count;	/* reference count */
+#define	NDADDR	12		/* direct addresses in inode */
+#define	NIADDR	3		/* indirect addresses in inode */
+
+struct inode {
+	struct	inode *i_chain[2];	/* must be first */
+	u_short	i_flag;
+	u_short	i_count;	/* reference count */
 	dev_t	i_dev;		/* device where inode resides */
+	u_short	i_shlockc;	/* count of shared locks on inode */
+	u_short	i_exlockc;	/* count of exclusive locks on inode */
 	ino_t	i_number;	/* i number, 1-to-1 with device address */
-	unsigned short i_mode;
-	short	i_nlink;	/* directory entries */
-	short	i_uid;		/* owner */
-	short	i_gid;		/* group of owner */
-	off_t	i_size;		/* size of file */
+	struct	fs *i_fs;	/* file sys associated with this inode */
+	struct	dquot *i_dquot;	/* quota structure controlling this file */
 	union {
-		struct {
-			daddr_t	i_addr[NADDR];	/* if normal file/directory */
-			daddr_t	i_lastr;	/* last logical block read (for read-ahead) */
-		};
-		struct {
-			daddr_t	i_rdev;		/* i_addr[0] */
-			struct	group i_group;	/* multiplexor group file */
-		};
+		daddr_t	if_lastr;	/* last read (read-ahead) */
+		struct	socket *is_socket;
+		struct	{
+			struct inode  *if_freef;	/* free list forward */
+			struct inode **if_freeb;	/* free list back */
+		} i_fr;
 	} i_un;
-	short	i_vfdcnt;	/* number of fd's vreading this inode */
-	short	i_hlink;	/* link in hash chain (iget/iput/ifind) */
+	struct 	icommon
+	{
+		u_short	ic_mode;	/*  0: mode and type of file */
+		short	ic_nlink;	/*  2: number of links to file */
+		short	ic_uid;		/*  4: owner's user id */
+		short	ic_gid;		/*  6: owner's group id */
+		quad	ic_size;	/*  8: number of bytes in file */
+		time_t	ic_atime;	/* 16: time last accessed */
+		long	ic_atspare;
+		time_t	ic_mtime;	/* 24: time last modified */
+		long	ic_mtspare;
+		time_t	ic_ctime;	/* 32: time created */
+		long	ic_ctspare;
+		daddr_t	ic_db[NDADDR];	/* 40: disk block addresses */
+		daddr_t	ic_ib[NIADDR];	/* 88: indirect blocks */
+		long	ic_flags;	/* 100: status, currently unused */
+		long	ic_spare[6];	/* 104: reserved, currently unused */
+	} i_ic;
+};
+
+struct dinode {
+	union {
+		struct	icommon di_icom;
+		char	di_size[128];
+	} di_un;
 };
 
+#define	i_mode		i_ic.ic_mode
+#define	i_nlink		i_ic.ic_nlink
+#define	i_uid		i_ic.ic_uid
+#define	i_gid		i_ic.ic_gid
+#define	i_size		i_ic.ic_size.val[0]
+#define	i_db		i_ic.ic_db
+#define	i_ib		i_ic.ic_ib
+#define	i_atime		i_ic.ic_atime
+#define	i_mtime		i_ic.ic_mtime
+#define	i_ctime		i_ic.ic_ctime
+#define	i_rdev		i_ic.ic_db[0]
+#define	i_lastr		i_un.if_lastr
+#define	i_socket	i_un.is_socket
+#define	i_forw		i_chain[0]
+#define	i_back		i_chain[1]
+#define	i_freef		i_un.i_fr.if_freef
+#define	i_freeb		i_un.i_fr.if_freeb
+
+#define di_ic		di_un.di_icom
+#define	di_mode		di_ic.ic_mode
+#define	di_nlink	di_ic.ic_nlink
+#define	di_uid		di_ic.ic_uid
+#define	di_gid		di_ic.ic_gid
+#define	di_size		di_ic.ic_size.val[0]
+#define	di_db		di_ic.ic_db
+#define	di_ib		di_ic.ic_ib
+#define	di_atime	di_ic.ic_atime
+#define	di_mtime	di_ic.ic_mtime
+#define	di_ctime	di_ic.ic_ctime
+#define	di_rdev		di_ic.ic_db[0]
+
 #ifdef KERNEL
-extern	struct inode inode[];	/* The inode table itself */
+struct inode *inode;		/* the inode table itself */
+struct inode *inodeNINODE;	/* the end of the inode table */
+int	ninode;			/* number of slots in the table */
 
-struct	inode *rootdir;		/* pointer to inode of root directory */
-struct	inode *mpxip;		/* mpx virtual inode */
+struct	inode *rootdir;			/* pointer to inode of root directory */
 
 struct	inode *ialloc();
-struct	inode *ifind();
 struct	inode *iget();
+#ifdef notdef
+struct	inode *ifind();
+#endif
 struct	inode *owner();
 struct	inode *maknode();
 struct	inode *namei();
+
+ino_t	dirpref();
 #endif
 
 /* flags */
-#define	ILOCK	01		/* inode is locked */
-#define	IUPD	02		/* file has been modified */
-#define	IACC	04		/* inode access time to be updated */
-#define	IMOUNT	010		/* inode is mounted on */
-#define	IWANT	020		/* some process waiting on lock */
-#define	ITEXT	040		/* inode is pure text prototype */
-#define	ICHG	0100		/* inode has been changed */
+#define	ILOCKED		0x1		/* inode is locked */
+#define	IUPD		0x2		/* file has been modified */
+#define	IACC		0x4		/* inode access time to be updated */
+#define	IMOUNT		0x8		/* inode is mounted on */
+#define	IWANT		0x10		/* some process waiting on lock */
+#define	ITEXT		0x20		/* inode is pure text prototype */
+#define	ICHG		0x40		/* inode has been changed */
+#define	ISHLOCK		0x80		/* file has shared lock */
+#define	IEXLOCK		0x100		/* file has exclusive lock */
+#define	ILWAIT		0x200		/* someone waiting on file lock */
 
 /* modes */
-#define	IFMT	0170000		/* type of file */
-#define		IFDIR	0040000	/* directory */
-#define		IFCHR	0020000	/* character special */
-#define		IFBLK	0060000	/* block special */
-#define		IFREG	0100000	/* regular */
-#define		IFMPC	0030000	/* multiplexed char special */
-#define		IFMPB	0070000	/* multiplexed block special */
-#define	ISUID	04000		/* set user id on execution */
-#define	ISGID	02000		/* set group id on execution */
-#define	ISVTX	01000		/* save swapped text even after use */
-#define	IREAD	0400		/* read, write, execute permissions */
-#define	IWRITE	0200
-#define	IEXEC	0100
+#define	IFMT		0170000		/* type of file */
+#define	IFCHR		0020000		/* character special */
+#define	IFDIR		0040000		/* directory */
+#define	IFBLK		0060000		/* block special */
+#define	IFREG		0100000		/* regular */
+#define	IFLNK		0120000		/* symbolic link */
+#define	IFSOCK		0140000		/* socket */
+
+#define	ISUID		04000		/* set user id on execution */
+#define	ISGID		02000		/* set group id on execution */
+#define	ISVTX		01000		/* save swapped text even after use */
+#define	IREAD		0400		/* read, write, execute permissions */
+#define	IWRITE		0200
+#define	IEXEC		0100
+
+#define	ILOCK(ip) { \
+	while ((ip)->i_flag & ILOCKED) { \
+		(ip)->i_flag |= IWANT; \
+		sleep((caddr_t)(ip), PINOD); \
+	} \
+	(ip)->i_flag |= ILOCKED; \
+}
+
+#define	IUNLOCK(ip) { \
+	(ip)->i_flag &= ~ILOCKED; \
+	if ((ip)->i_flag&IWANT) { \
+		(ip)->i_flag &= ~IWANT; \
+		wakeup((caddr_t)(ip)); \
+	} \
+}
+
+#define	IUPDAT(ip, t1, t2, waitfor) { \
+	if (ip->i_flag&(IUPD|IACC|ICHG)) \
+		iupdat(ip, t1, t2, waitfor); \
+}