calmsacibis995
109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
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/* UNIX System Laboratories, Inc. */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ifndef _FS_SPECFS_ATNODE_H /* wrapper symbol for kernel use */
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#define _FS_SPECFS_ATNODE_H /* subject to change without notice */
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#ident "$Revision: 1.1 $"
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#include <sys/types.h>
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#include <sys/sema.h>
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#include <fs/specfs/spec_ops.h>
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/*
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* The atnode represents the attributes of a special file.
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*
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* The atnode is created to handle any spec vnode that doesn't
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* have an underlying file system that can handle the vattr_t
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* attributes.
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*/
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typedef struct atnode {
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uint64_t at_flag; /* flags, see below */
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bhv_desc_t at_bhv_desc; /* specfs attr behavior desc. */
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mutex_t at_lock; /* mutual exclusion lock */
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short at_locktrips; /* # of lock reacquisitions */
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vnode_t *at_fsvp; /* fs entry vnode (if any) */
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dev_t at_dev; /* device the atnode represents */
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dev_t at_fsid; /* file system identifier */
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daddr_t at_size; /* blk device size (basic blks) */
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time_t at_atime; /* time of last access */
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time_t at_mtime; /* time of last modification */
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time_t at_ctime; /* time of last attributes chg */
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u_int16_t at_mode; /* get/setattr mode bits */
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__uint32_t at_uid; /* owner's user id */
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__uint32_t at_gid; /* owner's group id */
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u_int16_t at_projid; /* owner's project id */
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} atnode_t;
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/*
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* Flags for changing time.
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*/
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#define SPECFS_ICHGTIME_MOD 0x1 /* modification timestamp */
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#define SPECFS_ICHGTIME_ACC 0x2 /* access timestamp */
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#define SPECFS_ICHGTIME_CHG 0x4 /* inode field change timestamp */
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/*
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* File types (mode field)
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*/
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#define IFMT 0170000 /* type of file */
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#define IFIFO 0010000 /* named pipe (fifo) */
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#define IFCHR 0020000 /* character special */
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#define IFDIR 0040000 /* directory */
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#define IFBLK 0060000 /* block special */
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#define IFREG 0100000 /* regular */
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#define IFLNK 0120000 /* symbolic link */
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#define IFSOCK 0140000 /* socket */
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#define IFMNT 0160000 /* mount point */
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/*
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* File execution and access modes.
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*/
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#define ISUID 04000 /* set user id on execution */
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#define ISGID 02000 /* set group id on execution */
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#define ISVTX 01000 /* sticky directory */
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#define IREAD 0400 /* read, write, execute permissions */
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#define IWRITE 0200
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#define IEXEC 0100
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/*
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* Convert between behavior and atnode
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*/
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#define BHV_TO_ATP(Bdp) ((atnode_t *)(BHV_PDATA(Bdp)))
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#define ATP_TO_BHV(Atp) (&((Atp)->at_bhv_desc))
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#define ATP_TO_VP(Atp) BHV_TO_VNODE(ATP_TO_BHV(Atp))
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#ifdef _KERNEL
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/*
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* If driver does not have a size routine (e.g. old drivers), the size of the
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* device is assumed to be infinite.
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*/
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#define UNKNOWN_SIZE 0x7fffffff
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/*
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* Lock and unlock snodes.
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*/
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#define SPEC_ATP_LOCK(Atp) spec_at_lock(Atp)
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#define SPEC_ATP_UNLOCK(Atp) spec_at_unlock(Atp)
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void spec_at_lock(struct atnode *);
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void spec_at_unlock(struct atnode *);
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extern struct vnodeops spec_at_vnodeops;
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/*
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* Externalized at spec functions
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*/
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extern void spec_at_insert_bhv(vnode_t *vp, vnode_t *fsvp);
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#endif /* _KERNEL */
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#endif /* _FS_SPECFS_ATNODE_H */
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