220 lines
5.6 KiB
C
220 lines
5.6 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed
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* to Berkeley by John Heidemann of the UCLA Ficus project.
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*
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* Source: * @(#)i405_init.c 2.10 92/04/27 UCLA Ficus project
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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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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/mount.h>
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#include <sys/unistd.h>
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#include <sys/vnode.h>
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static int vop_nostrategy __P((struct vop_strategy_args *));
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/*
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* This vnode table stores what we want to do if the filesystem doesn't
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* implement a particular VOP.
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*
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* If there is no specific entry here, we will return EOPNOTSUPP.
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*
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*/
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vop_t **default_vnodeop_p;
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static struct vnodeopv_entry_desc default_vnodeop_entries[] = {
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{ &vop_default_desc, (vop_t *) vop_eopnotsupp },
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{ &vop_abortop_desc, (vop_t *) nullop },
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{ &vop_advlock_desc, (vop_t *) vop_einval },
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{ &vop_bwrite_desc, (vop_t *) vn_bwrite },
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{ &vop_close_desc, (vop_t *) vop_null },
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{ &vop_fsync_desc, (vop_t *) vop_null },
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{ &vop_ioctl_desc, (vop_t *) vop_enotty },
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{ &vop_islocked_desc, (vop_t *) vop_noislocked },
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{ &vop_lease_desc, (vop_t *) vop_null },
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{ &vop_lock_desc, (vop_t *) vop_nolock },
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{ &vop_mmap_desc, (vop_t *) vop_einval },
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{ &vop_open_desc, (vop_t *) vop_null },
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{ &vop_pathconf_desc, (vop_t *) vop_einval },
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{ &vop_poll_desc, (vop_t *) vop_nopoll },
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{ &vop_readlink_desc, (vop_t *) vop_einval },
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{ &vop_reallocblks_desc, (vop_t *) vop_eopnotsupp },
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{ &vop_revoke_desc, (vop_t *) vop_revoke },
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{ &vop_strategy_desc, (vop_t *) vop_nostrategy },
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{ &vop_unlock_desc, (vop_t *) vop_nounlock },
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{ NULL, NULL }
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};
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static struct vnodeopv_desc default_vnodeop_opv_desc =
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{ &default_vnodeop_p, default_vnodeop_entries };
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VNODEOP_SET(default_vnodeop_opv_desc);
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int
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vop_eopnotsupp(struct vop_generic_args *ap)
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{
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/*
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printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name);
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*/
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return (EOPNOTSUPP);
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}
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int
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vop_ebadf(struct vop_generic_args *ap)
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{
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return (EBADF);
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}
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int
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vop_enotty(struct vop_generic_args *ap)
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{
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return (ENOTTY);
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}
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int
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vop_einval(struct vop_generic_args *ap)
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{
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return (EINVAL);
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}
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int
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vop_null(struct vop_generic_args *ap)
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{
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return (0);
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}
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int
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vop_defaultop(struct vop_generic_args *ap)
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{
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return (VOCALL(default_vnodeop_p, ap->a_desc->vdesc_offset, ap));
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}
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static int
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vop_nostrategy (struct vop_strategy_args *ap)
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{
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printf("No strategy for buffer at %p\n", ap->a_bp);
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vprint("", ap->a_bp->b_vp);
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ap->a_bp->b_flags |= B_ERROR;
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ap->a_bp->b_error = EOPNOTSUPP;
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biodone(ap->a_bp);
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return (EOPNOTSUPP);
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}
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int
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vop_stdpathconf(ap)
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struct vop_pathconf_args /* {
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struct vnode *a_vp;
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int a_name;
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int *a_retval;
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} */ *ap;
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{
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switch (ap->a_name) {
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case _PC_LINK_MAX:
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*ap->a_retval = LINK_MAX;
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return (0);
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case _PC_MAX_CANON:
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*ap->a_retval = MAX_CANON;
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return (0);
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case _PC_MAX_INPUT:
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*ap->a_retval = MAX_INPUT;
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return (0);
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case _PC_PIPE_BUF:
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*ap->a_retval = PIPE_BUF;
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return (0);
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case _PC_CHOWN_RESTRICTED:
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*ap->a_retval = 1;
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return (0);
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case _PC_VDISABLE:
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*ap->a_retval = _POSIX_VDISABLE;
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return (0);
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default:
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return (EINVAL);
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}
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/* NOTREACHED */
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}
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/*
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* Standard lock, unlock and islocked functions.
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*
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* These depend on the lock structure being the first element in the
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* inode, ie: vp->v_data points to the the lock!
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*/
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int
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vop_stdlock(ap)
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struct vop_lock_args /* {
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struct vnode *a_vp;
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int a_flags;
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struct proc *a_p;
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} */ *ap;
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{
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struct lock *l = (struct lock*)ap->a_vp->v_data;
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return (lockmgr(l, ap->a_flags, &ap->a_vp->v_interlock, ap->a_p));
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}
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int
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vop_stdunlock(ap)
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struct vop_unlock_args /* {
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struct vnode *a_vp;
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int a_flags;
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struct proc *a_p;
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} */ *ap;
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{
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struct lock *l = (struct lock*)ap->a_vp->v_data;
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return (lockmgr(l, ap->a_flags | LK_RELEASE, &ap->a_vp->v_interlock,
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ap->a_p));
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}
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int
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vop_stdislocked(ap)
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struct vop_islocked_args /* {
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struct vnode *a_vp;
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} */ *ap;
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{
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struct lock *l = (struct lock*)ap->a_vp->v_data;
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return (lockstatus(l));
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}
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