mirror of
https://github.com/ziglang/zig.git
synced 2025-12-06 22:33:08 +00:00
553cb3ed46
sys/param.h was manually adjusted to not define __NetBSD_Version__ since it will be defined by the compiler.
217 lines
8.0 KiB
C
Vendored
217 lines
8.0 KiB
C
Vendored
/* $NetBSD: specdev.h,v 1.53 2022/10/26 23:40:08 riastradh Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2008 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)specdev.h 8.6 (Berkeley) 5/21/95
|
|
*/
|
|
|
|
#ifndef _MISCFS_SPECFS_SPECDEV_H_
|
|
#define _MISCFS_SPECFS_SPECDEV_H_
|
|
|
|
#include <sys/mutex.h>
|
|
#include <sys/vnode.h>
|
|
|
|
typedef struct specnode {
|
|
vnode_t *sn_next;
|
|
struct specdev *sn_dev;
|
|
dev_t sn_rdev;
|
|
u_int sn_opencnt; /* # of opens, share of sd_opencnt */
|
|
bool sn_gone;
|
|
} specnode_t;
|
|
|
|
typedef struct specdev {
|
|
struct mount *sd_mountpoint;
|
|
struct lockf *sd_lockf;
|
|
vnode_t *sd_bdevvp;
|
|
u_int sd_opencnt; /* # of opens; close when ->0 */
|
|
u_int sd_refcnt; /* # of specnodes referencing this */
|
|
dev_t sd_rdev;
|
|
volatile u_int sd_iocnt; /* # bdev/cdev_* operations active */
|
|
bool sd_opened; /* true if successfully opened */
|
|
bool sd_closing; /* true when bdev/cdev_close ongoing */
|
|
} specdev_t;
|
|
|
|
/*
|
|
* Exported shorthand
|
|
*/
|
|
#define v_specnext v_specnode->sn_next
|
|
#define v_rdev v_specnode->sn_rdev
|
|
#define v_speclockf v_specnode->sn_dev->sd_lockf
|
|
|
|
/*
|
|
* Special device management
|
|
*/
|
|
void spec_node_init(vnode_t *, dev_t);
|
|
void spec_node_destroy(vnode_t *);
|
|
int spec_node_lookup_by_dev(enum vtype, dev_t, int, vnode_t **);
|
|
int spec_node_lookup_by_mount(struct mount *, vnode_t **);
|
|
struct mount *spec_node_getmountedfs(vnode_t *);
|
|
void spec_node_setmountedfs(vnode_t *, struct mount *);
|
|
void spec_node_revoke(vnode_t *);
|
|
|
|
/*
|
|
* Prototypes for special file operations on vnodes.
|
|
*/
|
|
extern const struct vnodeopv_desc spec_vnodeop_opv_desc;
|
|
extern int (**spec_vnodeop_p)(void *);
|
|
struct nameidata;
|
|
struct componentname;
|
|
struct flock;
|
|
struct buf;
|
|
struct uio;
|
|
|
|
int spec_lookup(void *);
|
|
int spec_open(void *);
|
|
int spec_close(void *);
|
|
int spec_read(void *);
|
|
int spec_write(void *);
|
|
int spec_fdiscard(void *);
|
|
int spec_ioctl(void *);
|
|
int spec_poll(void *);
|
|
int spec_kqfilter(void *);
|
|
int spec_mmap(void *);
|
|
int spec_fsync(void *);
|
|
#define spec_seek genfs_nullop /* XXX should query device */
|
|
int spec_inactive(void *);
|
|
int spec_reclaim(void *);
|
|
int spec_bmap(void *);
|
|
int spec_strategy(void *);
|
|
int spec_print(void *);
|
|
int spec_pathconf(void *);
|
|
int spec_advlock(void *);
|
|
|
|
/*
|
|
* This macro provides an initializer list for the fs-independent part
|
|
* of a filesystem's special file vnode ops descriptor table. We still
|
|
* need such a table in every filesystem, but we can at least avoid
|
|
* the cutpaste.
|
|
*
|
|
* This contains these ops:
|
|
* parsepath lookup
|
|
* create whiteout mknod open fallocate fdiscard ioctl poll kqfilter
|
|
* revoke mmap seek remove link rename mkdir rmdir symlink readdir
|
|
* readlink abortop bmap strategy pathconf advlock getpages putpages
|
|
*
|
|
* The filesystem should provide these ops that need to be its own:
|
|
* access and accessx
|
|
* getattr
|
|
* setattr
|
|
* fcntl
|
|
* inactive
|
|
* reclaim
|
|
* lock
|
|
* unlock
|
|
* print (should probably also call spec_print)
|
|
* islocked
|
|
* bwrite (normally vn_bwrite)
|
|
* openextattr
|
|
* closeextattr
|
|
* getextattr
|
|
* setextattr
|
|
* listextattr
|
|
* deleteextattr
|
|
* getacl
|
|
* setacl
|
|
* aclcheck
|
|
*
|
|
* The filesystem should also provide these ops that some filesystems
|
|
* do their own things with:
|
|
* close
|
|
* read
|
|
* write
|
|
* fsync
|
|
* In most cases "their own things" means adjust timestamps and call
|
|
* spec_foo. For fsync it varies, but should always also call spec_fsync.
|
|
*
|
|
* Note that because the op descriptor tables are unordered it does not
|
|
* matter where in the table this macro goes (except I think default
|
|
* still needs to be first...)
|
|
*/
|
|
#define GENFS_SPECOP_ENTRIES \
|
|
{ &vop_parsepath_desc, genfs_badop }, /* parsepath */ \
|
|
{ &vop_lookup_desc, spec_lookup }, /* lookup */ \
|
|
{ &vop_create_desc, genfs_badop }, /* create */ \
|
|
{ &vop_whiteout_desc, genfs_badop }, /* whiteout */ \
|
|
{ &vop_mknod_desc, genfs_badop }, /* mknod */ \
|
|
{ &vop_open_desc, spec_open }, /* open */ \
|
|
{ &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */ \
|
|
{ &vop_fdiscard_desc, spec_fdiscard }, /* fdiscard */ \
|
|
{ &vop_ioctl_desc, spec_ioctl }, /* ioctl */ \
|
|
{ &vop_poll_desc, spec_poll }, /* poll */ \
|
|
{ &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ \
|
|
{ &vop_revoke_desc, genfs_revoke }, /* revoke */ \
|
|
{ &vop_mmap_desc, spec_mmap }, /* mmap */ \
|
|
{ &vop_seek_desc, spec_seek }, /* seek */ \
|
|
{ &vop_remove_desc, genfs_badop }, /* remove */ \
|
|
{ &vop_link_desc, genfs_badop }, /* link */ \
|
|
{ &vop_rename_desc, genfs_badop }, /* rename */ \
|
|
{ &vop_mkdir_desc, genfs_badop }, /* mkdir */ \
|
|
{ &vop_rmdir_desc, genfs_badop }, /* rmdir */ \
|
|
{ &vop_symlink_desc, genfs_badop }, /* symlink */ \
|
|
{ &vop_readdir_desc, genfs_badop }, /* readdir */ \
|
|
{ &vop_readlink_desc, genfs_badop }, /* readlink */ \
|
|
{ &vop_abortop_desc, genfs_badop }, /* abortop */ \
|
|
{ &vop_bmap_desc, spec_bmap }, /* bmap */ \
|
|
{ &vop_strategy_desc, spec_strategy }, /* strategy */ \
|
|
{ &vop_pathconf_desc, spec_pathconf }, /* pathconf */ \
|
|
{ &vop_advlock_desc, spec_advlock }, /* advlock */ \
|
|
{ &vop_getpages_desc, genfs_getpages }, /* getpages */ \
|
|
{ &vop_putpages_desc, genfs_putpages } /* putpages */
|
|
|
|
|
|
bool iskmemvp(struct vnode *);
|
|
void spec_init(void);
|
|
|
|
#endif /* _MISCFS_SPECFS_SPECDEV_H_ */ |