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/* $OpenBSD: tcfs_dir.c,v 1.4 2002/03/14 01:27:08 millert Exp $ */
/*
* Copyright 2000 The TCFS Project at http://tcfs.dia.unisa.it/
* 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. The name of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/dirent.h>
#include <miscfs/tcfs/tcfs.h>
#include <miscfs/tcfs/tcfs_rw.h>
int tcfs_new_direntry(void *, tcfs_fileinfo *);
int
tcfs_new_direntry(void *v, tcfs_fileinfo *i)
{
struct vop_create_args *x;
struct ucred *cr;
struct proc *pr;
int err;
x = (struct vop_create_args *)v;
cr = x->a_cnp->cn_cred;
pr = x->a_cnp->cn_proc;
if (!TCFS_CHECK_AKEY(cr, pr, x->a_dvp))
return tcfs_bypass(v);
/* Per i file speciali e per i link, niente flags (per ora)*/
if((x->a_desc == VDESC(vop_mknod)) ||
(x->a_desc == VDESC(vop_symlink)) ||
(x->a_desc == VDESC(vop_link))) {
err=tcfs_bypass(v);
return err;
}
if (!(err=tcfs_bypass(v)))
err = tcfs_xsetflags(*(x->a_vpp),pr,cr,i);
return err;
}
int
tcfs_create(v)
void *v;
{
struct vop_create_args *x;
struct ucred *cr;
struct proc *pr;
tcfs_fileinfo i;
x = (struct vop_create_args *)v;
cr = x->a_cnp->cn_cred;
pr = x->a_cnp->cn_proc;
i = tcfs_xgetflags(x->a_dvp, pr, cr);
if (FI_CFLAG(&i)||FI_GSHAR(&i))
return tcfs_new_direntry(v, &i);
else
return tcfs_bypass(v);
}
int
tcfs_mknod(v)
void *v;
{
struct vop_mknod_args *x;
struct ucred *cr;
struct proc *pr;
tcfs_fileinfo i;
x = (struct vop_mknod_args *)v;
cr = x->a_cnp->cn_cred;
pr = x->a_cnp->cn_proc;
i = tcfs_xgetflags(x->a_dvp, pr, cr);
if (FI_CFLAG(&i) || FI_GSHAR(&i))
return tcfs_new_direntry(v, &i);
else
return tcfs_bypass(v);
}
int
tcfs_mkdir(v)
void *v;
{
struct vop_mkdir_args *x;
struct ucred *cr;
struct proc *pr;
tcfs_fileinfo i;
x = (struct vop_mkdir_args *)v;
cr = x->a_cnp->cn_cred;
pr = x->a_cnp->cn_proc;
i = tcfs_xgetflags(x->a_dvp,pr,cr);
if (FI_CFLAG(&i) || FI_GSHAR(&i))
return tcfs_new_direntry(v, &i);
else
return tcfs_bypass(v);
}
int tcfs_link(v)
void *v;
{
struct vop_link_args *x;
struct ucred *cr;
struct proc *pr;
tcfs_fileinfo i;
x = (struct vop_link_args *)v;
cr = x->a_cnp->cn_cred;
pr = x->a_cnp->cn_proc;
i = tcfs_xgetflags(x->a_dvp, pr, cr);
if (FI_CFLAG(&i) || FI_GSHAR(&i))
return tcfs_new_direntry(v, &i);
else
return tcfs_bypass(v);
}
int
tcfs_symlink(v)
void *v;
{
struct vop_symlink_args *x;
struct ucred *cr;
struct proc *pr;
tcfs_fileinfo i;
x = (struct vop_symlink_args *)v;
cr = x->a_cnp->cn_cred;
pr = x->a_cnp->cn_proc;
i = tcfs_xgetflags(x->a_dvp,pr,cr);
if (FI_CFLAG(&i) || FI_GSHAR(&i))
return tcfs_new_direntry(v, &i);
else
return tcfs_bypass(v);
}
int
tcfs_readdir(v)
void *v;
{
/*
tcfs_fileinfo i;
struct vop_readdir_args *a=(struct vop_readdir_args*)v;
struct dirent *s,*d,*e;
char *p;
int err;
off_t offset;
int req,resid;
i=tcfs_xgetflags(a->a_vp,a->a_uio->uio_procp,a->a_cred);
offset=a->a_uio->uio_offset;
req=a->a_uio->uio_resid;
p=a->a_uio->uio_iov->iov_base;
err=tcfs_bypass(v);
resid=a->a_uio->uio_resid;
s=(struct dirent*)p;
e=(struct dirent*)a->a_uio->uio_iov->iov_base;
if( (!FI_CFLAG(&i)) && (!FI_GSHAR(&i)) )
return err;
for(d=s; d<e && d->d_reclen;d=(struct dirent*)((char*)d+d->d_reclen))
{
if(!d->d_fileno)
continue;
if((d->d_namlen==1 && d->d_name[0]=='.') ||
(d->d_namlen==2 && d->d_name[0]=='.' && d->d_name[1]=='.'))
continue;
if(d->d_namlen)
d->d_name[0]--;
}
return err;
*/
return tcfs_bypass(v);
}
int
tcfs_rename(v)
void *v;
{
return tcfs_bypass(v);
}
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