merge in vnodes

[unix-history] / usr / src / sys / ufs / ffs / inode.h

diff --git a/usr/src/sys/ufs/ffs/inode.h b/usr/src/sys/ufs/ffs/inode.h
index a3a5be2..9fe33c8 100644 (file)
--- a/usr/src/sys/ufs/ffs/inode.h
+++ b/usr/src/sys/ufs/ffs/inode.h
@@ -1,6 +1,21 @@
-/*     inode.h 4.12    82/06/29        */
-
-/*     inode.h 2.1     3/25/82 */
+/*
+ * Copyright (c) 1982, 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *     @(#)inode.h     7.3 (Berkeley) %G%
+ */

 
 /*
  * The I node is the focus of all file activity in UNIX.
 
 /*
  * The I node is the focus of all file activity in UNIX.


@@ -10,17 +25,23 @@
  * Data in icommon is read in from permanent inode on volume.
  */
 
  * Data in icommon is read in from permanent inode on volume.
  */
 

-#define        NDADDR  8               /* direct addresses in inode */
-#define        NIADDR  2               /* indirect addresses in inode */
+#define        NDADDR  12              /* direct addresses in inode */
+#define        NIADDR  3               /* indirect addresses in inode */

 
 struct inode {
        struct  inode *i_chain[2];      /* must be first */
 
 struct inode {
        struct  inode *i_chain[2];      /* must be first */

-       char    i_flag;
-       char    i_count;        /* reference count */
+       struct  vnode i_vnode;  /* vnode associated with this inode */
+       struct  vnode *i_devvp; /* vnode for block I/O */
+       u_short i_flag;

        dev_t   i_dev;          /* device where inode resides */
        ino_t   i_number;       /* i number, 1-to-1 with device address */
        dev_t   i_dev;          /* device where inode resides */
        ino_t   i_number;       /* i number, 1-to-1 with device address */

-       long    i_hlink;        /* link in hash chain (iget/iput/ifind) */
+       long    i_id;           /* unique identifier */
+       long    i_diroff;       /* offset in dir, where we found last entry */

        struct  fs *i_fs;       /* file sys associated with this inode */
        struct  fs *i_fs;       /* file sys associated with this inode */

+       struct  dquot *i_dquot; /* quota structure controlling this file */
+       struct  text *i_text;   /* text entry, if any (should be region) */
+       struct  inode *i_devlst;/* list of block device inodes */
+       off_t   i_endoff;       /* end of useful stuff in directory */

        union {
                daddr_t if_lastr;       /* last read (read-ahead) */
                struct  socket *is_socket;
        union {
                daddr_t if_lastr;       /* last read (read-ahead) */
                struct  socket *is_socket;


@@ -33,21 +54,28 @@ struct inode {
        {
                u_short ic_mode;        /*  0: mode and type of file */
                short   ic_nlink;       /*  2: number of links to file */
        {
                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 */
-               off_t   ic_size;        /*  8: number of bytes in file */
-               daddr_t ic_db[NDADDR];  /* 12: disk block addresses */
-               daddr_t ic_ib[NIADDR];  /* 44: indirect blocks */
-               time_t  ic_atime;       /* 52: time last accessed */
-               time_t  ic_mtime;       /* 56: time last modified */
-               time_t  ic_ctime;       /* 60: time created */
+               uid_t   ic_uid;         /*  4: owner's user id */
+               gid_t   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: last time inode changed */
+               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_blocks;      /* 104: blocks actually held */
+               long    ic_gen;         /* 108: generation number */
+               long    ic_spare[4];    /* 112: reserved, currently unused */

        } i_ic;
 };
 
 struct dinode {
        union {
                struct  icommon di_icom;
        } i_ic;
 };
 
 struct dinode {
        union {
                struct  icommon di_icom;

-               char    di_size[64];
+               char    di_size[128];

        } di_un;
 };
 
        } di_un;
 };
 


@@ -55,15 +83,20 @@ struct dinode {
 #define        i_nlink         i_ic.ic_nlink
 #define        i_uid           i_ic.ic_uid
 #define        i_gid           i_ic.ic_gid
 #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
+/* ugh! -- must be fixed */
+#if defined(vax) || defined(tahoe)
+#define        i_size          i_ic.ic_size.val[0]
+#endif

 #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_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_blocks       i_ic.ic_blocks

 #define        i_rdev          i_ic.ic_db[0]
 #define        i_rdev          i_ic.ic_db[0]

+#define i_gen          i_ic.ic_gen

 #define        i_lastr         i_un.if_lastr
 #define        i_lastr         i_un.if_lastr

-#define        i_socket        is_socket
+#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_forw          i_chain[0]
 #define        i_back          i_chain[1]
 #define        i_freef         i_un.i_fr.if_freef


@@ -74,37 +107,40 @@ struct dinode {
 #define        di_nlink        di_ic.ic_nlink
 #define        di_uid          di_ic.ic_uid
 #define        di_gid          di_ic.ic_gid
 #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
+#if defined(vax) || defined(tahoe)
+#define        di_size         di_ic.ic_size.val[0]
+#endif

 #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]
 #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]

+#define        di_blocks       di_ic.ic_blocks
+#define        di_gen          di_ic.ic_gen

 
 #ifdef KERNEL
 
 #ifdef KERNEL

-extern struct inode *inode;            /* The inode table itself */
-extern struct inode *inodeNINODE;      /* The end of the inode table */
-extern int ninode;                     /* number of slots in the table */
-
-struct inode *rootdir;                 /* pointer to inode of root directory */
-
-struct inode *ialloc();
-struct inode *ifind();
-struct inode *iget();
-struct inode *owner();
-struct inode *maknode();
-struct inode *namei();
+struct inode *inode;           /* the inode table itself */
+struct inode *inodeNINODE;     /* the end of the inode table */
+int    ninode;                 /* number of slots in the table */
+
+extern struct vnodeops ufs_vnodeops;   /* vnode operations for ufs */
+extern struct vnodeops blk_vnodeops;   /* vnode operations for blk devices */
+
+extern ino_t   dirpref();

 #endif
 
 /* flags */
 #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        IWANT           0x8             /* some process waiting on lock */
+#define        ICHG            0x10            /* inode has been changed */
+#define        ISHLOCK         0x20            /* file has shared lock */
+#define        IEXLOCK         0x40            /* file has exclusive lock */
+#define        ILWAIT          0x80            /* someone waiting on file lock */
+#define        IMOD            0x100           /* inode has been modified */
+#define        IRENAME         0x200           /* inode is being renamed */

 
 /* modes */
 #define        IFMT            0170000         /* type of file */
 
 /* modes */
 #define        IFMT            0170000         /* type of file */


@@ -113,10 +149,75 @@ struct    inode *namei();
 #define        IFBLK           0060000         /* block special */
 #define        IFREG           0100000         /* regular */
 #define        IFLNK           0120000         /* symbolic link */
 #define        IFBLK           0060000         /* block special */
 #define        IFREG           0100000         /* regular */
 #define        IFLNK           0120000         /* symbolic link */

-#define        IFPORTAL        0140000         /* portal */
+#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        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

+
+#ifdef KERNEL
+/*
+ * Convert between inode pointers and vnode pointers
+ */
+#define VTOI(vp)       ((struct inode *)(vp)->v_data)
+#define ITOV(ip)       ((struct vnode *)&(ip)->i_vnode)
+
+/*
+ * Convert between vnode types and inode formats
+ */
+extern enum vtype      iftovt_tab[];
+extern int             vttoif_tab[];
+#define IFTOVT(mode)   (iftovt_tab[((mode) & IFMT) >> 13])
+#define VTTOIF(indx)   (vttoif_tab[(int)(indx)])
+
+#define MAKEIMODE(indx, mode)  (int)(VTTOIF(indx) | (mode))
+
+/*
+ * Lock and unlock inodes.
+ */
+#define        ILOCK(ip) { \
+       while ((ip)->i_flag & ILOCKED) { \
+               (ip)->i_flag |= IWANT; \
+               (void) 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|IMOD)) \
+               (void) iupdat(ip, t1, t2, waitfor); \
+}
+
+#define        ITIMES(ip, t1, t2) { \
+       if ((ip)->i_flag&(IUPD|IACC|ICHG)) { \
+               (ip)->i_flag |= IMOD; \
+               if ((ip)->i_flag&IACC) \
+                       (ip)->i_atime = (t1)->tv_sec; \
+               if ((ip)->i_flag&IUPD) \
+                       (ip)->i_mtime = (t2)->tv_sec; \
+               if ((ip)->i_flag&ICHG) \
+                       (ip)->i_ctime = time.tv_sec; \
+               (ip)->i_flag &= ~(IACC|IUPD|ICHG); \
+       } \
+}
+
+/*
+ * This overlays the fid sturcture (see mount.h)
+ */
+struct ufid {
+       u_short ufid_len;
+       ino_t   ufid_ino;
+       long    ufid_gen;
+};
+#endif