24efa9d3fa
YA pseudofs megacommit, part 2: - Merge the pfs_vnode and pfs_vdata structures, and make the vnode cache a doubly-linked list. This eliminates the need to walk the list in pfs_vncache_free(). - Add an exit callout which revokes vnodes associated with the process that just exited. Since it needs to lock the cache when it does this, pfs_vncache_mutex needs MTX_RECURSE.
69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
/*-
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* Copyright (c) 2001 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _PSEUDOFS_INTERNAL_H_INCLUDED
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#define _PSEUDOFS_INTERNAL_H_INCLUDED
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/*
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* Sysctl subtree
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*/
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SYSCTL_DECL(_vfs_pfs);
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/*
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* Vnode data
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*/
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struct pfs_vdata {
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struct pfs_node *pvd_pn;
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pid_t pvd_pid;
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struct vnode *pvd_vnode;
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struct pfs_vdata*pvd_prev, *pvd_next;
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};
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/*
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* Vnode cache
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*/
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void pfs_vncache_load (void);
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void pfs_vncache_unload (void);
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int pfs_vncache_alloc (struct mount *, struct vnode **,
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struct pfs_node *, pid_t pid);
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int pfs_vncache_free (struct vnode *);
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/*
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* File number bitmap
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*/
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void pfs_fileno_load (void);
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void pfs_fileno_unload (void);
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void pfs_fileno_init (struct pfs_info *);
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void pfs_fileno_uninit (struct pfs_info *);
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void pfs_fileno_alloc (struct pfs_info *, struct pfs_node *);
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void pfs_fileno_free (struct pfs_info *, struct pfs_node *);
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#endif
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