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/*
* Mach Operating System
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* HISTORY
* 21-Feb-90 Morris Meyer (mmeyer) at NeXT
* Backed out NFS 4.0 IMARK() macro.
*
* 28-Sep-89 Morris Meyer (mmeyer) at NeXT
* NFS 4.0 Changes.
*
* 20-Sep-88 Avadis Tevanian (avie) at NeXT
* Support fast symbolic links for NeXT too.
*
* 18-Nov-87 Avadis Tevanian (avie) at Carnegie-Mellon University
* Eliminate MACH_VM conditional.
*
* 27-Oct-87 Peter King (king) at NeXT
* SUN_VFS: Added NFS support.
*
* 25-May-87 Avadis Tevanian (avie) at Carnegie-Mellon University
* Use vm_info field regardless of which options are enabled.
*
* 22-Jan-87 Michael Young (mwyoung) at Carnegie-Mellon University
* MACH_XP: Correct type for inode.pager field.
*
* 22-Dec-86 David L. Black (dlb) at Carnegie-Mellon University
* MULTIMAX: support Encore's fast symbolic links.
*
* 21-Oct-86 Jonathan J. Chew at Carnegie-Mellon University
* Use romp definition of "i_size" and "di_size" fields in inode
* structure with 68000.
*
* 14-Oct-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Added changes for ns32000 byte ordering (from dlb).
*
* 31-May-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Set the pager_id field in the inode structure. This is a back
* pointer to the real pager id which will allow for pager id's to
* be different than inode numbers.
*
* 25-Jan-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Upgraded to 4.3.
*
* 18-Feb-86 Bill Bolosky (bolosky) at Carnegie-Mellon University
* Added different definitions of i_size and di_size for Sailboat
* from IBM code under switch ROMP. These differences are
* presumably because of byte ordering differences.
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)inode.h 7.1 (Berkeley) 6/4/86
*/
/* @(#)inode.h 2.2 88/06/20 4.0NFSSRC SMI; from UCB 7.1 6/4/86 */
/*
* 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, 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 NDADDR 12 /* direct addresses in inode */
#define NIADDR 3 /* indirect addresses in inode */
#if defined(NeXT) || defined(MULTIMAX)
#define MAX_FASTLINK_SIZE ((NDADDR + NIADDR) * sizeof (daddr_t))
#endif
struct inode {
struct inode *i_chain[2]; /* must be first */
struct inode *inode_list; /* list of all inodes --- could search
inode hash table to traverse
instead though */
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 */
union {
daddr_t if_lastr; /* last read (read-ahead) */
struct socket *is_socket;
} i_un;
struct {
struct inode *if_freef; /* free list forward */
struct inode **if_freeb; /* free list back */
} i_fr;
struct icommon
{
u_short ic_mode; /* 0: mode and type of file */
short ic_nlink; /* 2: number of links to file */
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;
#if defined(NeXT) || defined(MULTIMAX)
union {
struct {
daddr_t Mb_db[NDADDR]; /* 40: disk block addresses*/
daddr_t Mb_ib[NIADDR]; /* 88: indirect blocks */
} ic_Mb;
#define ic_db ic_Mun.ic_Mb.Mb_db
#define ic_ib ic_Mun.ic_Mb.Mb_ib
char ic_Msymlink[MAX_FASTLINK_SIZE];
/* 40: symbolic link name */
} ic_Mun;
#define ic_symlink ic_Mun.ic_Msymlink
#else
daddr_t ic_db[NDADDR]; /* 40: disk block addresses */
daddr_t ic_ib[NIADDR]; /* 88: indirect blocks */
#endif
long ic_flags; /* 100: status, currently unused */
#if defined(NeXT) || defined(MULTIMAX)
#define IC_FASTLINK 0x0001 /* Symbolic link in inode */
#endif
long ic_blocks; /* 104: blocks actually held */
long ic_gen; /* 108: generation number */
long ic_spare[4]; /* 112: reserved, currently unused */
} i_ic;
uid_t i_ruid; /* cached real uid for user mounts */
gid_t i_rgid; /* cached real gid for user mounts */
};
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
/* ugh! -- must be fixed */
#if __LITTLE_ENDIAN__
#define i_size i_ic.ic_size.val[0]
#endif
#if __BIG_ENDIAN__
#define i_size i_ic.ic_size.val[1]
#endif
#define i_db i_ic.ic_db
#define i_ib i_ic.ic_ib
#if defined(NeXT) || defined(MULTIMAX)
#define i_symlink i_ic.ic_symlink
#define i_icflags i_ic.ic_flags
#endif
#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_gen i_ic.ic_gen
#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_fr.if_freef
#define i_freeb 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
#if __LITTLE_ENDIAN__
#define di_size di_ic.ic_size.val[0]
#endif
#if __BIG_ENDIAN__
#define di_size di_ic.ic_size.val[1]
#endif
#define di_db di_ic.ic_db
#define di_ib di_ic.ic_ib
#if defined(NeXT) || defined(MULTIMAX)
#define di_symlink di_ic.ic_symlink
#define di_icflags di_ic.ic_flags
#endif
#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
struct inode *inode_list; /* list of all inodes */
extern struct vnodeops ufs_vnodeops; /* vnode operations for ufs */
struct inode *ialloc();
struct inode *iget();
ino_t dirpref();
#endif
/* 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 ICHG 0x040 /* inode has been changed */
#define ILWAIT 0x080 /* someone waiting on file lock */
#define IREF 0x100 /* inode is being referenced */
#if NeXT
#define IFREE 0x200 /* inode has been free'd */
#define IRELEASE_TO_ZONE 0x8000
#endif
/* 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
/*
* 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(M) (iftovt_tab[((M) & IFMT) >> 13])
#define VTTOIF(T) (vttoif_tab[(int)(T)])
#define MAKEIMODE(T, M) (VTTOIF(T) | (M))
/*
* Lock and unlock inodes.
*/
#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, waitfor) { \
if (ip->i_flag & (IUPD|IACC|ICHG|IMOD)) \
iupdat(ip, waitfor); \
}
/*
* Mark an inode with the current (unique) timestamp.
*/
struct timeval iuniqtime;
#ifdef NeXT
#define IMARK(ip) { \
microtime(&iuniqtime); \
if ((ip)->i_flag & IACC) { \
(ip)->i_atime = iuniqtime.tv_sec; \
} \
if ((ip)->i_flag & IUPD) { \
(ip)->i_mtime = iuniqtime.tv_sec; \
} \
if ((ip)->i_flag & ICHG) { \
ip->i_diroff = 0; \
(ip)->i_ctime = iuniqtime.tv_sec; \
} \
}
#else
#define IMARK(ip) { \
if (time.tv_sec > iuniqtime.tv_sec || \
time.tv_usec > iuniqtime.tv_usec) { \
iuniqtime.tv_sec = time.tv_sec; \
iuniqtime.tv_usec = time.tv_usec; \
} else { \
iuniqtime.tv_usec++; \
} \
if ((ip)->i_flag & IACC) { \
(ip)->i_atime = iuniqtime.tv_sec; \
} \
if ((ip)->i_flag & IUPD) { \
(ip)->i_mtime = iuniqtime.tv_sec; \
} \
if ((ip)->i_flag & ICHG) { \
ip->i_diroff = 0; \
(ip)->i_ctime = iuniqtime.tv_sec; \
} \
}
#endif
#define ITIMES(ip) { \
if ((ip)->i_flag & (IUPD|IACC|ICHG)) { \
(ip)->i_flag |= IMOD; \
IMARK(ip); \
(ip)->i_flag &= ~(IACC|IUPD|ICHG); \
} \
}
#define ESAME (-1) /* trying to rename linked files (special) */
/*
* Macros for modifying inode reference counts - used to check for consistency
* at each reference.
*
* The idecr_chk() macro is defined such that it doesn't decrement the
* reference count when already zero. This is in order to avoid the nested
* iincr panic which would otherwise occur when update() tries to sync the
* inode before halting and increments the count back to zero.
*
* The panic message strings are initialized variables rather than constant
* strings since they are potentially used in many places.
*/
extern char *PANICMSG_IINCR;
extern char *PANICMSG_IDECR;
#define iincr_chk(ip) { if (++((ip)->i_count) == 0) panic(PANICMSG_IINCR); }
#define idecr_chk(ip) { if (((ip)->i_count) != 0) ((ip)->i_count--); else panic(PANICMSG_IDECR); }
/*
* Check that file is owned by current user or user is su.
*/
#define OWNER(CR, IP) (((CR)->cr_uid == (IP)->i_uid)? 0: (suser()? 0: u.u_error))
/*
* enums
*/
enum de_op { DE_CREATE, DE_LINK, DE_RENAME }; /* direnter ops */
/*
* This overlays the fid sturcture (see vfs.h)
*/
struct ufid {
u_short ufid_len;
ino_t ufid_ino;
long ufid_gen;
};
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.