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- /* Copyright (c) 1990 UNIX System Laboratories, Inc. */
- /* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
- /* All Rights Reserved */
-
- /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
- /* UNIX System Laboratories, Inc. */
- /* The copyright notice above does not evidence any */
- /* actual or intended publication of such source code. */
-
- #ident "@(#)/usr/include/sys/fs/ufs_inode.h.sl 1.1 4.0 12/08/90 28655 AT&T-USL"
-
- #ifndef _SYS_FS_UFS_INODE_H
- #define _SYS_FS_UFS_INODE_H
-
-
-
- /*
- * The I node is the focus of all local file activity in UNIX.
- * There is a unique inode allocated for each active file,
- * each current directory, each mounted-on file, each mapping,
- * and the root. An inode is `named' by its dev/inumber pair.
- * Data in icommon is read in from permanent inode on volume.
- */
-
- #define EFT_MAGIC 0x90909090 /* magic cookie for EFT */
- #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 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 */
- off_t i_diroff; /* offset in dir, where we found last entry */
- struct fs *i_fs; /* file sys associated with this inode */
- struct dquot *i_dquot; /* quota structure controlling this file */
- short i_owner; /* proc index of process locking inode */
- short i_count; /* number of inode locks for i_owner */
- daddr_t i_nextr; /* next byte read offset (read-ahead) */
- struct inode *i_freef; /* free list forward */
- struct inode **i_freeb; /* free list back */
- ulong i_vcode; /* version code attribute */
- long i_mapcnt; /* mappings to file pages */
- int *i_map; /* block list for the corresponding file */
-
- int i_mapsz; /* kmem_alloc'ed size */
- int i_oldsz; /* i_size when you did the allocation */
-
- struct icommon {
- o_mode_t ic_smode; /* 0: mode and type of file */
- short ic_nlink; /* 2: number of links to file */
- o_uid_t ic_suid; /* 4: owner's user id */
- o_gid_t ic_sgid; /* 6: owner's group id */
- quad ic_size; /* 8: number of bytes in file */
- #ifdef _KERNEL
- struct timeval ic_atime;/* 16: time last accessed */
- struct timeval ic_mtime;/* 24: time last modified */
- struct timeval ic_ctime;/* 32: last time inode changed */
- #else
- 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;
- #endif
- 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 */
- mode_t ic_mode; /* 112: EFT version of mode*/
- uid_t ic_uid; /* 116: EFT version of uid */
- gid_t ic_gid; /* 120: EFT version of gid */
- ulong ic_eftflag; /* 124: indicate EFT version*/
-
- } 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_smode i_ic.ic_smode
- #define i_suid i_ic.ic_suid
- #define i_sgid i_ic.ic_sgid
- #define i_eftflag i_ic.ic_eftflag
-
- /* ugh! -- must be fixed */
- #if defined(vax) || defined(i386)
- #define i_size i_ic.ic_size.val[0]
- #endif
- #if defined(mc68000) || defined(sparc) || defined(u3b2) || defined(u3b15)
- #define i_size i_ic.ic_size.val[1]
- #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_blocks i_ic.ic_blocks
- #define i_oldrdev i_ic.ic_db[0]
- #define i_rdev i_ic.ic_db[1]
- #define i_gen i_ic.ic_gen
- #define i_forw i_chain[0]
- #define i_back i_chain[1]
-
- #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_smode di_ic.ic_smode
- #define di_suid di_ic.ic_suid
- #define di_sgid di_ic.ic_sgid
- #define di_eftflag di_ic.ic_eftflag
-
- #if defined(vax) || defined(i386)
- #define di_size di_ic.ic_size.val[0]
- #endif
- #if defined(mc68000) || defined(sparc) || defined(u3b2) || defined(u3b15)
- #define di_size di_ic.ic_size.val[1]
- #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_oldrdev di_ic.ic_db[0]
- #define di_rdev di_ic.ic_db[1]
- #define di_blocks di_ic.ic_blocks
- #define di_gen di_ic.ic_gen
-
- /* flags */
- #define ILOCKED 0x001 /* inode is locked */
- #define IUPD 0x002 /* file has been modified */
- #define IACC 0x004 /* inode access time to be updated */
- #define IMOD 0x008 /* inode has been modified */
- #define IWANT 0x010 /* some process waiting on lock */
- #define ISYNC 0x020 /* do all allocation synchronously */
- #define ICHG 0x040 /* inode has been changed */
- #define ILWAIT 0x080 /* someone waiting on file lock */
- #define IREF 0x100 /* inode is being referenced */
- #define INOACC 0x200 /* no access time update in getpage */
- #define IMODTIME 0x400 /* mod time already set */
- #define IINACTIVE 0x800 /* iinactive in progress */
- #define IRWLOCKED 0x1000 /* inode is rwlocked */
-
- /* modes */
- #define IFMT 0170000 /* type of file */
- #define IFIFO 0010000 /* named pipe (fifo) */
- #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
-
-
- #ifdef _KERNEL
- struct inode *ufs_inode; /* the inode table itself */
- struct inode *inodeNINODE; /* the end of the inode table */
- extern int ufs_ninode; /* number of slots in the table */
-
- extern struct vnodeops ufs_vnodeops; /* vnode operations for ufs */
-
- extern ino_t dirpref();
- extern daddr_t blkpref();
-
- /*
- * A struct fbuf is used to get a mapping to part of a file using the
- * segkmap facilities. After you get a mapping, you can fbrelse() it
- * (giving a seg code to pass back to segmap_release), you can fbwrite()
- * it (causes a synchronous write back using inode mapping information),
- * or you can fbiwrite it (causing indirect synchronous write back to
- * the block number given without using inode mapping information).
- */
-
- struct fbuf {
- addr_t fb_addr;
- u_int fb_count;
- };
-
- extern int fbread(/* vp, off, len, rw, fbpp */);
- extern void fbzero(/* vp, off, len, fbpp */);
- extern int fbwrite(/* fb */);
- extern int fbiwrite(/* fb, ip, bn */);
- extern void fbrelse(/* fb, rw */);
-
- /*
- * Convert between inode pointers and vnode pointers
- */
- #define VTOI(VP) ((struct inode *)(VP)->v_data)
- #define ITOV(IP) ((struct vnode *)&(IP)->i_vnode)
-
- #ifdef notneeded
- Look at sys/mode.h and os/vnode.c
- /*
- * Convert between vnode types and inode formats
- */
- extern enum vtype iftovt_tab[];
- extern int vttoif_tab[];
- #define IFTOVT(M) (iftovt_tab[((M) & IFMT) >> 13])
- #define VTTOIF(T) (vttoif_tab[(int)(T)])
-
- #define MAKEIMODE(T, M) (VTTOIF(T) | (M))
- #endif
-
- /*
- * Lock and unlock inodes.
- */
- #define IRWLOCK(ip) { \
- while ((ip)->i_flag & IRWLOCKED) { \
- (ip)->i_flag |= IWANT; \
- (void) sleep((caddr_t)(ip), PINOD); \
- } \
- (ip)->i_flag |= IRWLOCKED; \
- if (((ip)->i_vnode.v_flag & VISSWAP) != 0){ \
- curproc->p_swlocks++; \
- curproc->p_flag |= SSWLOCKS;\
- } \
- }
-
- #define IRWUNLOCK(ip) { \
- ASSERT((ip)->i_flag & IRWLOCKED); \
- if (((ip)->i_vnode.v_flag & VISSWAP) != 0) \
- if (--curproc->p_swlocks == 0) \
- curproc->p_flag &= ~SSWLOCKS; \
- (ip)->i_flag &= ~IRWLOCKED; \
- if ((ip)->i_flag & IWANT) { \
- (ip)->i_flag &= ~IWANT; \
- wakeprocs((caddr_t)(ip), PRMPT); \
- } \
- }
-
- #define ILOCK(ip) { \
- while (((ip)->i_flag & ILOCKED) && \
- (ip)->i_owner != curproc->p_slot) { \
- (ip)->i_flag |= IWANT; \
- (void) sleep((caddr_t)(ip), PINOD); \
- } \
- (ip)->i_owner = curproc->p_slot; \
- (ip)->i_count++; \
- (ip)->i_flag |= ILOCKED; \
- if (((ip)->i_vnode.v_flag & VISSWAP) != 0){ \
- curproc->p_swlocks++; \
- curproc->p_flag |= SSWLOCKS;\
- } \
- }
-
- #define IUNLOCK(ip) { \
- if (--(ip)->i_count < 0) \
- panic("IUNLOCK"); \
- if (((ip)->i_vnode.v_flag & VISSWAP) != 0) \
- if (--curproc->p_swlocks == 0) \
- curproc->p_flag &= ~SSWLOCKS; \
- if ((ip)->i_count == 0) { \
- (ip)->i_flag &= ~ILOCKED; \
- if ((ip)->i_flag & IWANT) { \
- (ip)->i_flag &= ~IWANT; \
- wakeprocs((caddr_t)(ip), PRMPT); \
- } \
- } \
- }
-
- #define IUPDAT(ip, waitfor) { \
- if (ip->i_flag & (IUPD|IACC|ICHG|IMOD)) \
- ufs_iupdat(ip, waitfor); \
- }
-
- /*
- * Mark an inode with the current (unique) timestamp.
- */
- struct timeval iuniqtime;
-
- #define IMARK(ip) { \
- if (hrestime.tv_sec > iuniqtime.tv_sec || \
- hrestime.tv_nsec/1000 > iuniqtime.tv_usec) { \
- iuniqtime.tv_sec = hrestime.tv_sec; \
- iuniqtime.tv_usec = hrestime.tv_nsec/1000; \
- } else { \
- iuniqtime.tv_usec++; \
- } \
- if ((ip)->i_flag & IACC) \
- (ip)->i_atime = iuniqtime; \
- if ((ip)->i_flag & IUPD) { \
- (ip)->i_mtime = iuniqtime; \
- (ip)->i_flag |= IMODTIME; \
- } \
- if ((ip)->i_flag & ICHG) { \
- ip->i_diroff = 0; \
- (ip)->i_ctime = iuniqtime; \
- } \
- }
-
- #define ITIMES(ip) { \
- if ((ip)->i_flag & (IUPD|IACC|ICHG)) { \
- (ip)->i_flag |= IMOD; \
- IMARK(ip); \
- (ip)->i_flag &= ~(IACC|IUPD|ICHG); \
- } \
- }
-
- /*
- * Allocate the specified block in the inode
- * and make sure any in-core pages are initialized.
- */
- #define BMAPALLOC(ip, lbn, size) \
- ufs_bmap((ip), (lbn), (daddr_t *)NULL, (daddr_t *)NULL, (size), S_WRITE, 0)
-
- #define ESAME (-1) /* trying to rename linked files (special) */
-
- /*
- * Check that file is owned by current user or user is su.
- */
- #define OWNER(CR, IP) (((CR)->cr_uid == (IP)->i_uid)? 0: (suser(CR)? 0: EPERM))
-
- #define UFS_HOLE (daddr_t)-1 /* value used when no block allocated */
-
- /*
- * enums
- */
- enum de_op { DE_CREATE, DE_MKDIR, DE_LINK, DE_RENAME }; /* direnter ops */
- enum dr_op { DR_REMOVE, DR_RMDIR, DR_RENAME }; /* dirremove ops */
-
- /*
- * This overlays the fid structure (see vfs.h)
- */
- struct ufid {
- u_short ufid_len;
- ino_t ufid_ino;
- long ufid_gen;
- };
-
- /*
- * UFS VFS private data.
- */
- struct ufsvfs {
- struct vnode *vfs_root; /* root vnode */
- struct buf *vfs_bufp; /* buffer containing superblock */
- struct vnode *vfs_devvp; /* block device vnode */
- struct inode *vfs_qinod; /* QUOTA: pointer to quota file */
- u_short vfs_qflags; /* QUOTA: filesystem flags */
- u_long vfs_btimelimit; /* QUOTA: block time limit */
- u_long vfs_ftimelimit; /* QUOTA: file time limit */
- };
-
- #endif
-
- #endif /* _SYS_FS_UFS_INODE_H */
-