770 lines
17 KiB
C
770 lines
17 KiB
C
/*-
|
|
* Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
|
|
* 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 AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/malloc.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
#if defined(__NetBSD__)
|
|
#include <vm/vm_prot.h>
|
|
#endif
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_object.h>
|
|
#include <vm/vm_extern.h>
|
|
|
|
#if defined(__NetBSD__)
|
|
#include <miscfs/specfs/specdev.h>
|
|
#endif
|
|
|
|
#include <fs/hpfs/hpfs.h>
|
|
#include <fs/hpfs/hpfsmount.h>
|
|
#include <fs/hpfs/hpfs_subr.h>
|
|
|
|
#if defined(__FreeBSD__)
|
|
MALLOC_DEFINE(M_HPFSMNT, "HPFS mount", "HPFS mount structure");
|
|
MALLOC_DEFINE(M_HPFSNO, "HPFS node", "HPFS node structure");
|
|
#endif
|
|
|
|
static int hpfs_root __P((struct mount *, struct vnode **));
|
|
static int hpfs_statfs __P((struct mount *, struct statfs *,
|
|
struct proc *));
|
|
static int hpfs_unmount __P((struct mount *, int, struct proc *));
|
|
static int hpfs_vget __P((struct mount *mp, ino_t ino,
|
|
struct vnode **vpp));
|
|
static int hpfs_mountfs __P((register struct vnode *, struct mount *,
|
|
struct hpfs_args *, struct proc *));
|
|
static int hpfs_vptofh __P((struct vnode *, struct fid *));
|
|
static int hpfs_fhtovp __P((struct mount *, struct fid *,
|
|
struct vnode **));
|
|
|
|
#if !defined(__FreeBSD__)
|
|
static int hpfs_quotactl __P((struct mount *, int, uid_t, caddr_t,
|
|
struct proc *));
|
|
static int hpfs_start __P((struct mount *, int, struct proc *));
|
|
static int hpfs_sync __P((struct mount *, int, struct ucred *,
|
|
struct proc *));
|
|
#endif
|
|
|
|
#if defined(__FreeBSD__)
|
|
struct sockaddr;
|
|
static int hpfs_mount __P((struct mount *, char *, caddr_t,
|
|
struct nameidata *, struct proc *));
|
|
static int hpfs_init __P((struct vfsconf *));
|
|
static int hpfs_checkexp __P((struct mount *, struct sockaddr *,
|
|
int *, struct ucred **));
|
|
#else /* defined(__NetBSD__) */
|
|
static int hpfs_mount __P((struct mount *, const char *, void *,
|
|
struct nameidata *, struct proc *));
|
|
static void hpfs_init __P((void));
|
|
static int hpfs_mountroot __P((void));
|
|
static int hpfs_sysctl __P((int *, u_int, void *, size_t *, void *,
|
|
size_t, struct proc *));
|
|
static int hpfs_checkexp __P((struct mount *, struct mbuf *,
|
|
int *, struct ucred **));
|
|
#endif
|
|
|
|
/*ARGSUSED*/
|
|
static int
|
|
hpfs_checkexp(mp, nam, exflagsp, credanonp)
|
|
#if defined(__FreeBSD__)
|
|
register struct mount *mp;
|
|
struct sockaddr *nam;
|
|
int *exflagsp;
|
|
struct ucred **credanonp;
|
|
#else /* defined(__NetBSD__) */
|
|
register struct mount *mp;
|
|
struct mbuf *nam;
|
|
int *exflagsp;
|
|
struct ucred **credanonp;
|
|
#endif
|
|
{
|
|
register struct netcred *np;
|
|
register struct hpfsmount *hpm = VFSTOHPFS(mp);
|
|
|
|
/*
|
|
* Get the export permission structure for this <mp, client> tuple.
|
|
*/
|
|
np = vfs_export_lookup(mp, &hpm->hpm_export, nam);
|
|
if (np == NULL)
|
|
return (EACCES);
|
|
|
|
*exflagsp = np->netc_exflags;
|
|
*credanonp = &np->netc_anon;
|
|
return (0);
|
|
}
|
|
|
|
#if !defined(__FreeBSD__)
|
|
/*ARGSUSED*/
|
|
static int
|
|
hpfs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
|
|
int *name;
|
|
u_int namelen;
|
|
void *oldp;
|
|
size_t *oldlenp;
|
|
void *newp;
|
|
size_t newlen;
|
|
struct proc *p;
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
static int
|
|
hpfs_mountroot()
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
#endif
|
|
|
|
#if defined(__FreeBSD__)
|
|
static int
|
|
hpfs_init (
|
|
struct vfsconf *vcp )
|
|
#else /* defined(__NetBSD__) */
|
|
static void
|
|
hpfs_init ()
|
|
#endif
|
|
{
|
|
dprintf(("hpfs_init():\n"));
|
|
|
|
hpfs_hphashinit();
|
|
#if defined(__FreeBSD__)
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
hpfs_mount (
|
|
struct mount *mp,
|
|
#if defined(__FreeBSD__)
|
|
char *path,
|
|
caddr_t data,
|
|
#else /* defined(__NetBSD__) */
|
|
const char *path,
|
|
void *data,
|
|
#endif
|
|
struct nameidata *ndp,
|
|
struct proc *p )
|
|
{
|
|
u_int size;
|
|
int err = 0;
|
|
struct vnode *devvp;
|
|
struct hpfs_args args;
|
|
struct hpfsmount *hpmp = 0;
|
|
|
|
dprintf(("hpfs_mount():\n"));
|
|
/*
|
|
***
|
|
* Mounting non-root file system or updating a file system
|
|
***
|
|
*/
|
|
|
|
/* copy in user arguments*/
|
|
err = copyin(data, (caddr_t)&args, sizeof (struct hpfs_args));
|
|
if (err)
|
|
goto error_1; /* can't get arguments*/
|
|
|
|
/*
|
|
* If updating, check whether changing from read-only to
|
|
* read/write; if there is no device name, that's all we do.
|
|
*/
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
dprintf(("hpfs_mount: MNT_UPDATE: "));
|
|
|
|
hpmp = VFSTOHPFS(mp);
|
|
|
|
if (args.fspec == 0) {
|
|
dprintf(("export 0x%x\n",args.export.ex_flags));
|
|
err = vfs_export(mp, &hpmp->hpm_export, &args.export);
|
|
if (err) {
|
|
printf("hpfs_mount: vfs_export failed %d\n",
|
|
err);
|
|
}
|
|
goto success;
|
|
} else {
|
|
dprintf(("name [FAILED]\n"));
|
|
err = EINVAL;
|
|
goto success;
|
|
}
|
|
dprintf(("\n"));
|
|
}
|
|
|
|
/*
|
|
* Not an update, or updating the name: look up the name
|
|
* and verify that it refers to a sensible block device.
|
|
*/
|
|
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
|
|
err = namei(ndp);
|
|
if (err) {
|
|
/* can't get devvp!*/
|
|
goto error_1;
|
|
}
|
|
|
|
devvp = ndp->ni_vp;
|
|
|
|
#if defined(__FreeBSD__)
|
|
if (!vn_isdisk(devvp, &err))
|
|
goto error_2;
|
|
#else /* defined(__NetBSD__) */
|
|
if (devvp->v_type != VBLK) {
|
|
err = ENOTBLK;
|
|
goto error_2;
|
|
}
|
|
if (major(devvp->v_rdev) >= nblkdev) {
|
|
err = ENXIO;
|
|
goto error_2;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
********************
|
|
* NEW MOUNT
|
|
********************
|
|
*/
|
|
|
|
/*
|
|
* Since this is a new mount, we want the names for
|
|
* the device and the mount point copied in. If an
|
|
* error occurs, the mountpoint is discarded by the
|
|
* upper level code.
|
|
*/
|
|
/* Save "last mounted on" info for mount point (NULL pad)*/
|
|
copyinstr( path, /* mount point*/
|
|
mp->mnt_stat.f_mntonname, /* save area*/
|
|
MNAMELEN - 1, /* max size*/
|
|
&size); /* real size*/
|
|
bzero( mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
|
|
|
|
/* Save "mounted from" info for mount point (NULL pad)*/
|
|
copyinstr( args.fspec, /* device name*/
|
|
mp->mnt_stat.f_mntfromname, /* save area*/
|
|
MNAMELEN - 1, /* max size*/
|
|
&size); /* real size*/
|
|
bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
|
|
|
|
err = hpfs_mountfs(devvp, mp, &args, p);
|
|
if (err)
|
|
goto error_2;
|
|
|
|
/*
|
|
* Initialize FS stat information in mount struct; uses both
|
|
* mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
|
|
*
|
|
* This code is common to root and non-root mounts
|
|
*/
|
|
(void)VFS_STATFS(mp, &mp->mnt_stat, p);
|
|
|
|
goto success;
|
|
|
|
|
|
error_2: /* error with devvp held*/
|
|
|
|
/* release devvp before failing*/
|
|
vrele(devvp);
|
|
|
|
error_1: /* no state to back out*/
|
|
|
|
success:
|
|
return( err);
|
|
}
|
|
|
|
/*
|
|
* Common code for mount and mountroot
|
|
*/
|
|
int
|
|
hpfs_mountfs(devvp, mp, argsp, p)
|
|
register struct vnode *devvp;
|
|
struct mount *mp;
|
|
struct hpfs_args *argsp;
|
|
struct proc *p;
|
|
{
|
|
int error, ncount, ronly;
|
|
struct sublock *sup;
|
|
struct spblock *spp;
|
|
struct hpfsmount *hpmp;
|
|
struct buf *bp = NULL;
|
|
struct vnode *vp;
|
|
dev_t dev = devvp->v_rdev;
|
|
|
|
dprintf(("hpfs_mountfs():\n"));
|
|
/*
|
|
* Disallow multiple mounts of the same device.
|
|
* Disallow mounting of a device that is currently in use
|
|
* (except for root, which might share swap device for miniroot).
|
|
* Flush out any old buffers remaining from a previous use.
|
|
*/
|
|
error = vfs_mountedon(devvp);
|
|
if (error)
|
|
return (error);
|
|
ncount = vcount(devvp);
|
|
#if defined(__FreeBSD__)
|
|
if (devvp->v_object)
|
|
ncount -= 1;
|
|
#endif
|
|
if (ncount > 1 && devvp != rootvp)
|
|
return (EBUSY);
|
|
|
|
#if defined(__FreeBSD__)
|
|
VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, p);
|
|
error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0);
|
|
VOP__UNLOCK(devvp, 0, p);
|
|
#else
|
|
error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0);
|
|
#endif
|
|
if (error)
|
|
return (error);
|
|
|
|
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
|
|
VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, p);
|
|
error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p);
|
|
VOP__UNLOCK(devvp, 0, p);
|
|
if (error)
|
|
return (error);
|
|
|
|
/*
|
|
* Do actual mount
|
|
*/
|
|
hpmp = malloc(sizeof(struct hpfsmount), M_HPFSMNT, M_WAITOK);
|
|
bzero(hpmp, sizeof(struct hpfsmount));
|
|
|
|
/* Read in SuperBlock */
|
|
error = bread(devvp, SUBLOCK, SUSIZE, NOCRED, &bp);
|
|
if (error)
|
|
goto failed;
|
|
bcopy(bp->b_data, &hpmp->hpm_su, sizeof(struct sublock));
|
|
brelse(bp); bp = NULL;
|
|
|
|
/* Read in SpareBlock */
|
|
error = bread(devvp, SPBLOCK, SPSIZE, NOCRED, &bp);
|
|
if (error)
|
|
goto failed;
|
|
bcopy(bp->b_data, &hpmp->hpm_sp, sizeof(struct spblock));
|
|
brelse(bp); bp = NULL;
|
|
|
|
sup = &hpmp->hpm_su;
|
|
spp = &hpmp->hpm_sp;
|
|
|
|
/* Check magic */
|
|
if (sup->su_magic != SU_MAGIC) {
|
|
printf("hpfs_mountfs: SuperBlock MAGIC DOESN'T MATCH\n");
|
|
error = EINVAL;
|
|
goto failed;
|
|
}
|
|
if (spp->sp_magic != SP_MAGIC) {
|
|
printf("hpfs_mountfs: SpareBlock MAGIC DOESN'T MATCH\n");
|
|
error = EINVAL;
|
|
goto failed;
|
|
}
|
|
|
|
mp->mnt_data = (qaddr_t)hpmp;
|
|
hpmp->hpm_devvp = devvp;
|
|
hpmp->hpm_dev = devvp->v_rdev;
|
|
hpmp->hpm_mp = mp;
|
|
hpmp->hpm_uid = argsp->uid;
|
|
hpmp->hpm_gid = argsp->gid;
|
|
hpmp->hpm_mode = argsp->mode;
|
|
|
|
error = hpfs_bminit(hpmp);
|
|
if (error)
|
|
goto failed;
|
|
|
|
error = hpfs_cpinit(hpmp, argsp);
|
|
if (error) {
|
|
hpfs_bmdeinit(hpmp);
|
|
goto failed;
|
|
}
|
|
|
|
error = hpfs_root(mp, &vp);
|
|
if (error) {
|
|
hpfs_cpdeinit(hpmp);
|
|
hpfs_bmdeinit(hpmp);
|
|
goto failed;
|
|
}
|
|
|
|
vput(vp);
|
|
|
|
#if defined(__FreeBSD__)
|
|
mp->mnt_stat.f_fsid.val[0] = (long)dev2udev(dev);
|
|
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
|
|
#else
|
|
mp->mnt_stat.f_fsid.val[0] = (long)dev;
|
|
mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_HPFS);
|
|
#endif
|
|
mp->mnt_maxsymlinklen = 0;
|
|
mp->mnt_flag |= MNT_LOCAL;
|
|
devvp->v_specmountpoint = mp;
|
|
return (0);
|
|
|
|
failed:
|
|
if (bp)
|
|
brelse (bp);
|
|
mp->mnt_data = (qaddr_t)NULL;
|
|
#if defined(__FreeBSD__)
|
|
devvp->v_specmountpoint = NULL;
|
|
#else
|
|
devvp->v_specflags &= ~SI_MOUNTEDON;
|
|
#endif
|
|
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
|
|
return (error);
|
|
}
|
|
|
|
#if !defined(__FreeBSD__)
|
|
static int
|
|
hpfs_start (
|
|
struct mount *mp,
|
|
int flags,
|
|
struct proc *p )
|
|
{
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
hpfs_unmount(
|
|
struct mount *mp,
|
|
int mntflags,
|
|
struct proc *p)
|
|
{
|
|
int error, flags, ronly;
|
|
register struct hpfsmount *hpmp = VFSTOHPFS(mp);
|
|
|
|
dprintf(("hpfs_unmount():\n"));
|
|
|
|
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
|
|
|
|
flags = 0;
|
|
if(mntflags & MNT_FORCE)
|
|
flags |= FORCECLOSE;
|
|
|
|
dprintf(("hpfs_unmount: vflushing...\n"));
|
|
|
|
error = vflush(mp,NULLVP,flags);
|
|
if (error) {
|
|
printf("hpfs_unmount: vflush failed: %d\n",error);
|
|
return (error);
|
|
}
|
|
|
|
#if defined(__FreeBSD__)
|
|
hpmp->hpm_devvp->v_specmountpoint = NULL;
|
|
#else
|
|
hpmp->hpm_devvp->v_specflags &= ~SI_MOUNTEDON;
|
|
#endif
|
|
|
|
vinvalbuf(hpmp->hpm_devvp, V_SAVE, NOCRED, p, 0, 0);
|
|
error = VOP_CLOSE(hpmp->hpm_devvp, ronly ? FREAD : FREAD|FWRITE,
|
|
NOCRED, p);
|
|
|
|
vrele(hpmp->hpm_devvp);
|
|
|
|
dprintf(("hpfs_umount: freeing memory...\n"));
|
|
hpfs_cpdeinit(hpmp);
|
|
hpfs_bmdeinit(hpmp);
|
|
mp->mnt_data = (qaddr_t)0;
|
|
mp->mnt_flag &= ~MNT_LOCAL;
|
|
FREE(hpmp, M_HPFSMNT);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
hpfs_root(
|
|
struct mount *mp,
|
|
struct vnode **vpp )
|
|
{
|
|
int error = 0;
|
|
struct hpfsmount *hpmp = VFSTOHPFS(mp);
|
|
|
|
dprintf(("hpfs_root():\n"));
|
|
error = VFS_VGET(mp, (ino_t)hpmp->hpm_su.su_rootfno, vpp);
|
|
if(error) {
|
|
printf("hpfs_root: VFS_VGET failed: %d\n",error);
|
|
return (error);
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
hpfs_statfs(
|
|
struct mount *mp,
|
|
struct statfs *sbp,
|
|
struct proc *p)
|
|
{
|
|
struct hpfsmount *hpmp = VFSTOHPFS(mp);
|
|
|
|
dprintf(("hpfs_statfs(): HPFS%d.%d\n",
|
|
hpmp->hpm_su.su_hpfsver, hpmp->hpm_su.su_fnctver));
|
|
|
|
#if defined(__FreeBSD__)
|
|
sbp->f_type = mp->mnt_vfc->vfc_typenum;
|
|
#else /* defined(__NetBSD__) */
|
|
sbp->f_type = 0;
|
|
#endif
|
|
sbp->f_bsize = DEV_BSIZE;
|
|
sbp->f_iosize = DEV_BSIZE;
|
|
sbp->f_blocks = hpmp->hpm_su.su_btotal;
|
|
sbp->f_bfree = sbp->f_bavail = hpmp->hpm_bavail;
|
|
sbp->f_ffree = 0;
|
|
sbp->f_files = 0;
|
|
if (sbp != &mp->mnt_stat) {
|
|
bcopy((caddr_t)mp->mnt_stat.f_mntonname,
|
|
(caddr_t)&sbp->f_mntonname[0], MNAMELEN);
|
|
bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
|
|
(caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
|
|
}
|
|
sbp->f_flags = mp->mnt_flag;
|
|
|
|
return (0);
|
|
}
|
|
|
|
#if !defined(__FreeBSD__)
|
|
static int
|
|
hpfs_sync (
|
|
struct mount *mp,
|
|
int waitfor,
|
|
struct ucred *cred,
|
|
struct proc *p)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
hpfs_quotactl (
|
|
struct mount *mp,
|
|
int cmds,
|
|
uid_t uid,
|
|
caddr_t arg,
|
|
struct proc *p)
|
|
{
|
|
printf("hpfs_quotactl():\n");
|
|
return (EOPNOTSUPP);
|
|
}
|
|
#endif
|
|
|
|
/*ARGSUSED*/
|
|
static int
|
|
hpfs_fhtovp(
|
|
struct mount *mp,
|
|
struct fid *fhp,
|
|
struct vnode **vpp)
|
|
{
|
|
struct vnode *nvp;
|
|
struct hpfid *hpfhp = (struct hpfid *)fhp;
|
|
int error;
|
|
|
|
if ((error = VFS_VGET(mp, hpfhp->hpfid_ino, &nvp)) != 0) {
|
|
*vpp = NULLVP;
|
|
return (error);
|
|
}
|
|
/* XXX as unlink/rmdir/mkdir/creat are not currently possible
|
|
* with HPFS, we don't need to check anything else for now */
|
|
*vpp = nvp;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
hpfs_vptofh(
|
|
struct vnode *vp,
|
|
struct fid *fhp)
|
|
{
|
|
register struct hpfsnode *hpp;
|
|
register struct hpfid *hpfhp;
|
|
|
|
hpp = VTOHP(vp);
|
|
hpfhp = (struct hpfid *)fhp;
|
|
hpfhp->hpfid_len = sizeof(struct hpfid);
|
|
hpfhp->hpfid_ino = hpp->h_no;
|
|
/* hpfhp->hpfid_gen = hpp->h_gen; */
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
hpfs_vget(
|
|
struct mount *mp,
|
|
ino_t ino,
|
|
struct vnode **vpp)
|
|
{
|
|
struct hpfsmount *hpmp = VFSTOHPFS(mp);
|
|
struct vnode *vp;
|
|
struct hpfsnode *hp;
|
|
struct buf *bp;
|
|
struct proc *p = curproc; /* XXX */
|
|
int error;
|
|
|
|
dprintf(("hpfs_vget(0x%x): ",ino));
|
|
|
|
*vpp = NULL;
|
|
hp = NULL;
|
|
vp = NULL;
|
|
|
|
if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, p)) != NULL) {
|
|
dprintf(("hashed\n"));
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* We have to lock node creation for a while,
|
|
* but then we have to call getnewvnode(),
|
|
* this may cause hpfs_reclaim() to be called,
|
|
* this may need to VOP_VGET() parent dir for
|
|
* update reasons, and if parent is not in
|
|
* hash, we have to lock node creation...
|
|
* To solve this, we MALLOC, getnewvnode and init while
|
|
* not locked (probability of node appearence
|
|
* at that time is little, and anyway - we'll
|
|
* check for it).
|
|
*/
|
|
MALLOC(hp, struct hpfsnode *, sizeof(struct hpfsnode),
|
|
M_HPFSNO, M_WAITOK);
|
|
|
|
error = getnewvnode(VT_HPFS, hpmp->hpm_mp, hpfs_vnodeop_p, &vp);
|
|
if (error) {
|
|
printf("hpfs_vget: can't get new vnode\n");
|
|
FREE(hp, M_HPFSNO);
|
|
return (error);
|
|
}
|
|
|
|
dprintf(("prenew "));
|
|
|
|
vp->v_data = hp;
|
|
|
|
if (ino == (ino_t)hpmp->hpm_su.su_rootfno)
|
|
vp->v_flag |= VROOT;
|
|
|
|
simple_lock_init(&hp->h_interlock);
|
|
lockinit(&hp->h_lock, PINOD, "hpnode", 0, 0);
|
|
|
|
hp->h_flag = H_INVAL;
|
|
hp->h_vp = vp;
|
|
hp->h_hpmp = hpmp;
|
|
hp->h_no = ino;
|
|
hp->h_dev = hpmp->hpm_dev;
|
|
hp->h_uid = hpmp->hpm_uid;
|
|
hp->h_gid = hpmp->hpm_uid;
|
|
hp->h_mode = hpmp->hpm_mode;
|
|
hp->h_devvp = hpmp->hpm_devvp;
|
|
VREF(hp->h_devvp);
|
|
|
|
error = VN_LOCK(vp, LK_EXCLUSIVE, p);
|
|
if (error) {
|
|
vput(vp);
|
|
return (error);
|
|
}
|
|
|
|
do {
|
|
if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, p)) != NULL) {
|
|
dprintf(("hashed2\n"));
|
|
vput(vp);
|
|
return (0);
|
|
}
|
|
} while(LOCKMGR(&hpfs_hphash_lock,LK_EXCLUSIVE|LK_SLEEPFAIL,NULL,NULL));
|
|
|
|
hpfs_hphashins(hp);
|
|
|
|
LOCKMGR(&hpfs_hphash_lock, LK_RELEASE, NULL, NULL);
|
|
|
|
error = bread(hpmp->hpm_devvp, ino, FNODESIZE, NOCRED, &bp);
|
|
if (error) {
|
|
printf("hpfs_vget: can't read ino %d\n",ino);
|
|
vput(vp);
|
|
return (error);
|
|
}
|
|
bcopy(bp->b_data, &hp->h_fn, sizeof(struct fnode));
|
|
brelse(bp);
|
|
|
|
if (hp->h_fn.fn_magic != FN_MAGIC) {
|
|
printf("hpfs_vget: MAGIC DOESN'T MATCH\n");
|
|
vput(vp);
|
|
return (EINVAL);
|
|
}
|
|
|
|
vp->v_type = hp->h_fn.fn_flag ? VDIR:VREG;
|
|
hp->h_flag &= ~H_INVAL;
|
|
|
|
*vpp = vp;
|
|
|
|
return (0);
|
|
}
|
|
|
|
#if defined(__FreeBSD__)
|
|
static struct vfsops hpfs_vfsops = {
|
|
hpfs_mount,
|
|
vfs_stdstart,
|
|
hpfs_unmount,
|
|
hpfs_root,
|
|
vfs_stdquotactl,
|
|
hpfs_statfs,
|
|
vfs_stdsync,
|
|
hpfs_vget,
|
|
hpfs_fhtovp,
|
|
hpfs_checkexp,
|
|
hpfs_vptofh,
|
|
hpfs_init,
|
|
vfs_stduninit,
|
|
vfs_stdextattrctl,
|
|
};
|
|
VFS_SET(hpfs_vfsops, hpfs, 0);
|
|
#else /* defined(__NetBSD__) */
|
|
extern struct vnodeopv_desc hpfs_vnodeop_opv_desc;
|
|
|
|
struct vnodeopv_desc *hpfs_vnodeopv_descs[] = {
|
|
&hpfs_vnodeop_opv_desc,
|
|
NULL,
|
|
};
|
|
|
|
struct vfsops hpfs_vfsops = {
|
|
MOUNT_HPFS,
|
|
hpfs_mount,
|
|
hpfs_start,
|
|
hpfs_unmount,
|
|
hpfs_root,
|
|
hpfs_quotactl,
|
|
hpfs_statfs,
|
|
hpfs_sync,
|
|
hpfs_vget,
|
|
hpfs_fhtovp,
|
|
hpfs_vptofh,
|
|
hpfs_init,
|
|
hpfs_sysctl,
|
|
hpfs_mountroot,
|
|
hpfs_checkexp,
|
|
hpfs_vnodeopv_descs,
|
|
};
|
|
#endif
|