NetBSD-5.0.2/sys/fs/adosfs/advfsops.c
/* $NetBSD: advfsops.c,v 1.53 2008/06/28 01:34:05 rumble Exp $ */
/*
* Copyright (c) 1994 Christian E. Hopps
* Copyright (c) 1996 Matthias Scheler
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christian E. Hopps.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: advfsops.c,v 1.53 2008/06/28 01:34:05 rumble Exp $");
#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/time.h>
#include <sys/malloc.h>
#include <sys/pool.h>
#include <sys/disklabel.h>
#include <miscfs/genfs/genfs.h>
#include <miscfs/specfs/specdev.h> /* XXX */
#include <sys/fcntl.h>
#include <sys/namei.h>
#include <sys/ioctl.h>
#include <sys/queue.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/kauth.h>
#include <sys/simplelock.h>
#include <sys/module.h>
#include <fs/adosfs/adosfs.h>
MODULE(MODULE_CLASS_VFS, adosfs, NULL);
VFS_PROTOS(adosfs);
static struct sysctllog *adosfs_sysctl_log;
int adosfs_mountfs __P((struct vnode *, struct mount *, struct lwp *));
int adosfs_loadbitmap __P((struct adosfsmount *));
struct simplelock adosfs_hashlock;
struct pool adosfs_node_pool;
MALLOC_JUSTDEFINE(M_ADOSFSMNT, "adosfs mount", "adosfs mount structures");
MALLOC_JUSTDEFINE(M_ANODE, "adosfs anode","adosfs anode structures and tables");
MALLOC_JUSTDEFINE(M_ADOSFSBITMAP, "adosfs bitmap", "adosfs bitmap");
static const struct genfs_ops adosfs_genfsops = {
.gop_size = genfs_size,
};
int (**adosfs_vnodeop_p) __P((void *));
int
adosfs_mount(mp, path, data, data_len)
struct mount *mp;
const char *path;
void *data;
size_t *data_len;
{
struct lwp *l = curlwp;
struct nameidata nd;
struct vnode *devvp;
struct adosfs_args *args = data;
struct adosfsmount *amp;
int error;
mode_t accessmode;
if (*data_len < sizeof *args)
return EINVAL;
if (mp->mnt_flag & MNT_GETARGS) {
amp = VFSTOADOSFS(mp);
if (amp == NULL)
return EIO;
args->uid = amp->uid;
args->gid = amp->gid;
args->mask = amp->mask;
args->fspec = NULL;
*data_len = sizeof *args;
return 0;
}
if ((mp->mnt_flag & MNT_RDONLY) == 0)
return (EROFS);
if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL)
return EOPNOTSUPP;
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible block device.
*/
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec);
if ((error = namei(&nd)) != 0)
return (error);
devvp = nd.ni_vp;
if (devvp->v_type != VBLK) {
vrele(devvp);
return (ENOTBLK);
}
if (bdevsw_lookup(devvp->v_rdev) == NULL) {
vrele(devvp);
return (ENXIO);
}
/*
* If mount by non-root, then verify that user has necessary
* permissions on the device.
*/
if (kauth_authorize_generic(l->l_cred, KAUTH_GENERIC_ISSUSER, NULL)) {
accessmode = VREAD;
if ((mp->mnt_flag & MNT_RDONLY) == 0)
accessmode |= VWRITE;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_ACCESS(devvp, accessmode, l->l_cred);
if (error) {
vput(devvp);
return (error);
}
VOP_UNLOCK(devvp, 0);
}
/* MNT_UPDATE? */
if ((error = adosfs_mountfs(devvp, mp, l)) != 0) {
vrele(devvp);
return (error);
}
amp = VFSTOADOSFS(mp);
amp->uid = args->uid;
amp->gid = args->gid;
amp->mask = args->mask;
return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE,
mp->mnt_op->vfs_name, mp, l);
}
int
adosfs_mountfs(devvp, mp, l)
struct vnode *devvp;
struct mount *mp;
struct lwp *l;
{
struct disklabel dl;
struct partition *parp;
struct adosfsmount *amp;
struct buf *bp;
struct vnode *rvp;
int error, part, i;
part = DISKPART(devvp->v_rdev);
amp = NULL;
if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) != 0)
return (error);
/*
* open blkdev and read root block
*/
if ((error = VOP_OPEN(devvp, FREAD, NOCRED)) != 0)
return (error);
error = VOP_IOCTL(devvp, DIOCGDINFO, &dl, FREAD, NOCRED);
if (error)
goto fail;
parp = &dl.d_partitions[part];
amp = malloc(sizeof(struct adosfsmount), M_ADOSFSMNT, M_WAITOK);
memset((char *)amp, 0, (u_long)sizeof(struct adosfsmount));
amp->mp = mp;
if (dl.d_type == DTYPE_FLOPPY) {
amp->bsize = dl.d_secsize;
amp->secsperblk = 1;
}
else {
amp->bsize = parp->p_fsize * parp->p_frag;
amp->secsperblk = parp->p_frag;
}
/* invalid fs ? */
if (amp->secsperblk == 0) {
error = EINVAL;
goto fail;
}
bp = NULL;
if ((error = bread(devvp, (daddr_t)BBOFF,
amp->bsize, NOCRED, 0, &bp)) != 0) {
brelse(bp, 0);
goto fail;
}
amp->dostype = adoswordn(bp, 0);
brelse(bp, 0);
/* basic sanity checks */
if (amp->dostype < 0x444f5300 || amp->dostype > 0x444f5305) {
error = EINVAL;
goto fail;
}
amp->rootb = (parp->p_size / amp->secsperblk - 1 + parp->p_cpg) >> 1;
amp->numblks = parp->p_size / amp->secsperblk - parp->p_cpg;
amp->nwords = amp->bsize >> 2;
amp->dbsize = amp->bsize - (IS_FFS(amp) ? 0 : OFS_DATA_OFFSET);
amp->devvp = devvp;
mp->mnt_data = amp;
mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)devvp->v_rdev;
mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_ADOSFS);
mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0];
mp->mnt_stat.f_namemax = ADMAXNAMELEN;
mp->mnt_fs_bshift = ffs(amp->bsize) - 1;
mp->mnt_dev_bshift = DEV_BSHIFT; /* XXX */
mp->mnt_flag |= MNT_LOCAL;
/*
* init anode table.
*/
for (i = 0; i < ANODEHASHSZ; i++)
LIST_INIT(&->anodetab[i]);
/*
* get the root anode, if not a valid fs this will fail.
*/
if ((error = VFS_ROOT(mp, &rvp)) != 0)
goto fail;
/* allocate and load bitmap, set free space */
amp->bitmap = malloc(((amp->numblks + 31) / 32) * sizeof(*amp->bitmap),
M_ADOSFSBITMAP, M_WAITOK);
if (amp->bitmap)
adosfs_loadbitmap(amp);
if (mp->mnt_flag & MNT_RDONLY && amp->bitmap) {
/*
* Don't need the bitmap any more if it's read-only.
*/
free(amp->bitmap, M_ADOSFSBITMAP);
amp->bitmap = NULL;
}
vput(rvp);
return(0);
fail:
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
(void) VOP_CLOSE(devvp, FREAD, NOCRED);
VOP_UNLOCK(devvp, 0);
if (amp && amp->bitmap)
free(amp->bitmap, M_ADOSFSBITMAP);
if (amp)
free(amp, M_ADOSFSMNT);
return (error);
}
int
adosfs_start(mp, flags)
struct mount *mp;
int flags;
{
return (0);
}
int
adosfs_unmount(mp, mntflags)
struct mount *mp;
int mntflags;
{
struct adosfsmount *amp;
int error, flags;
flags = 0;
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
if ((error = vflush(mp, NULLVP, flags)) != 0)
return (error);
amp = VFSTOADOSFS(mp);
if (amp->devvp->v_type != VBAD)
amp->devvp->v_specmountpoint = NULL;
vn_lock(amp->devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_CLOSE(amp->devvp, FREAD, NOCRED);
vput(amp->devvp);
if (amp->bitmap)
free(amp->bitmap, M_ADOSFSBITMAP);
free(amp, M_ADOSFSMNT);
mp->mnt_data = NULL;
mp->mnt_flag &= ~MNT_LOCAL;
return (error);
}
int
adosfs_root(mp, vpp)
struct mount *mp;
struct vnode **vpp;
{
struct vnode *nvp;
int error;
if ((error = VFS_VGET(mp, (ino_t)VFSTOADOSFS(mp)->rootb, &nvp)) != 0)
return (error);
/* XXX verify it's a root block? */
*vpp = nvp;
return (0);
}
int
adosfs_statvfs(mp, sbp)
struct mount *mp;
struct statvfs *sbp;
{
struct adosfsmount *amp;
amp = VFSTOADOSFS(mp);
sbp->f_bsize = amp->bsize;
sbp->f_frsize = amp->bsize;
sbp->f_iosize = amp->dbsize;
sbp->f_blocks = amp->numblks;
sbp->f_bfree = amp->freeblks;
sbp->f_bavail = amp->freeblks;
sbp->f_bresvd = 0;
sbp->f_files = 0; /* who knows */
sbp->f_ffree = 0; /* " " */
sbp->f_favail = 0; /* " " */
sbp->f_fresvd = 0;
copy_statvfs_info(sbp, mp);
return (0);
}
/*
* lookup an anode, check mount's hash table if not found, create
* return locked and referenced al la vget(vp, 1);
*/
int
adosfs_vget(mp, an, vpp)
struct mount *mp;
ino_t an;
struct vnode **vpp;
{
struct adosfsmount *amp;
struct vnode *vp;
struct anode *ap;
struct buf *bp;
char *nam, *tmp;
int namlen, error;
error = 0;
amp = VFSTOADOSFS(mp);
bp = NULL;
/*
* check hash table. we are done if found
*/
if ((*vpp = adosfs_ahashget(mp, an)) != NULL)
return (0);
error = getnewvnode(VT_ADOSFS, mp, adosfs_vnodeop_p, &vp);
if (error)
return (error);
/*
* setup, insert in hash, and lock before io.
*/
vp->v_data = ap = pool_get(&adosfs_node_pool, PR_WAITOK);
memset(ap, 0, sizeof(struct anode));
ap->vp = vp;
ap->amp = amp;
ap->block = an;
ap->nwords = amp->nwords;
genfs_node_init(vp, &adosfs_genfsops);
adosfs_ainshash(amp, ap);
if ((error = bread(amp->devvp, an * amp->bsize / DEV_BSIZE,
amp->bsize, NOCRED, 0, &bp)) != 0) {
brelse(bp, 0);
vput(vp);
return (error);
}
/*
* get type and fill rest in based on that.
*/
switch (ap->type = adosfs_getblktype(amp, bp)) {
case AROOT:
vp->v_type = VDIR;
vp->v_vflag |= VV_ROOT;
ap->mtimev.days = adoswordn(bp, ap->nwords - 10);
ap->mtimev.mins = adoswordn(bp, ap->nwords - 9);
ap->mtimev.ticks = adoswordn(bp, ap->nwords - 8);
ap->created.days = adoswordn(bp, ap->nwords - 7);
ap->created.mins = adoswordn(bp, ap->nwords - 6);
ap->created.ticks = adoswordn(bp, ap->nwords - 5);
break;
case ALDIR:
case ADIR:
vp->v_type = VDIR;
break;
case ALFILE:
case AFILE:
vp->v_type = VREG;
ap->fsize = adoswordn(bp, ap->nwords - 47);
break;
case ASLINK: /* XXX soft link */
vp->v_type = VLNK;
/*
* convert from BCPL string and
* from: "part:dir/file" to: "/part/dir/file"
*/
nam = (char *)bp->b_data + (6 * sizeof(long));
namlen = strlen(nam);
tmp = nam;
while (*tmp && *tmp != ':')
tmp++;
if (*tmp == 0) {
ap->slinkto = malloc(namlen + 1, M_ANODE, M_WAITOK);
memcpy(ap->slinkto, nam, namlen);
} else if (*nam == ':') {
ap->slinkto = malloc(namlen + 1, M_ANODE, M_WAITOK);
memcpy(ap->slinkto, nam, namlen);
ap->slinkto[0] = '/';
} else {
ap->slinkto = malloc(namlen + 2, M_ANODE, M_WAITOK);
ap->slinkto[0] = '/';
memcpy(&ap->slinkto[1], nam, namlen);
ap->slinkto[tmp - nam + 1] = '/';
namlen++;
}
ap->slinkto[namlen] = 0;
ap->fsize = namlen;
break;
default:
brelse(bp, 0);
vput(vp);
return (EINVAL);
}
/*
* Get appropriate data from this block; hard link needs
* to get other data from the "real" block.
*/
/*
* copy in name (from original block)
*/
nam = (char *)bp->b_data + (ap->nwords - 20) * sizeof(u_int32_t);
namlen = *(u_char *)nam++;
if (namlen > 30) {
#ifdef DIAGNOSTIC
printf("adosfs: aget: name length too long blk %llu\n",
(unsigned long long)an);
#endif
brelse(bp, 0);
vput(vp);
return (EINVAL);
}
memcpy(ap->name, nam, namlen);
ap->name[namlen] = 0;
/*
* if dir alloc hash table and copy it in
*/
if (vp->v_type == VDIR) {
int i;
ap->tab = malloc(ANODETABSZ(ap) * 2, M_ANODE, M_WAITOK);
ap->ntabent = ANODETABENT(ap);
ap->tabi = (int *)&ap->tab[ap->ntabent];
memset(ap->tabi, 0, ANODETABSZ(ap));
for (i = 0; i < ap->ntabent; i++)
ap->tab[i] = adoswordn(bp, i + 6);
}
/*
* misc.
*/
ap->pblock = adoswordn(bp, ap->nwords - 3);
ap->hashf = adoswordn(bp, ap->nwords - 4);
ap->linknext = adoswordn(bp, ap->nwords - 10);
ap->linkto = adoswordn(bp, ap->nwords - 11);
/*
* setup last indirect block cache.
*/
ap->lastlindblk = 0;
if (ap->type == AFILE) {
ap->lastindblk = ap->block;
if (adoswordn(bp, ap->nwords - 10))
ap->linkto = ap->block;
} else if (ap->type == ALFILE) {
ap->lastindblk = ap->linkto;
brelse(bp, 0);
bp = NULL;
error = bread(amp->devvp, ap->linkto * amp->bsize / DEV_BSIZE,
amp->bsize, NOCRED, 0, &bp);
if (error) {
brelse(bp, 0);
vput(vp);
return (error);
}
ap->fsize = adoswordn(bp, ap->nwords - 47);
/*
* Should ap->block be set to the real file header block?
*/
ap->block = ap->linkto;
}
if (ap->type == AROOT) {
ap->adprot = 15;
ap->uid = amp->uid;
ap->gid = amp->gid;
} else {
ap->adprot = adoswordn(bp, ap->nwords - 48) ^ 15;
/*
* ADOS directories do not have a `x' protection bit as
* it is known in VFS; this functionality is fulfilled
* by the ADOS `r' bit.
*
* To retain the ADOS behaviour, fake execute permissions
* in that case.
*/
if ((ap->type == ADIR || ap->type == ALDIR) &&
(ap->adprot & 0x00000008) == 0)
ap->adprot &= ~0x00000002;
/*
* Get uid/gid from extensions in file header
* (really need to know if this is a muFS partition)
*/
ap->uid = (adoswordn(bp, ap->nwords - 49) >> 16) & 0xffff;
ap->gid = adoswordn(bp, ap->nwords - 49) & 0xffff;
if (ap->uid || ap->gid) {
if (ap->uid == 0xffff)
ap->uid = 0;
if (ap->gid == 0xffff)
ap->gid = 0;
ap->adprot |= 0x40000000; /* Kludge */
}
else {
/*
* uid & gid extension don't exist,
* so use the mount-point uid/gid
*/
ap->uid = amp->uid;
ap->gid = amp->gid;
}
}
ap->mtime.days = adoswordn(bp, ap->nwords - 23);
ap->mtime.mins = adoswordn(bp, ap->nwords - 22);
ap->mtime.ticks = adoswordn(bp, ap->nwords - 21);
*vpp = vp;
brelse(bp, 0);
uvm_vnp_setsize(vp, ap->fsize);
return (0);
}
/*
* Load the bitmap into memory, and count the number of available
* blocks.
* The bitmap will be released if the filesystem is read-only; it's
* only needed to find the free space.
*/
int
adosfs_loadbitmap(amp)
struct adosfsmount *amp;
{
struct buf *bp, *mapbp;
u_long bn;
int blkix, endix, mapix;
int bmsize;
int error;
bp = mapbp = NULL;
bn = amp->rootb;
if ((error = bread(amp->devvp, bn * amp->bsize / DEV_BSIZE, amp->bsize,
NOCRED, 0, &bp)) != 0) {
brelse(bp, 0);
return (error);
}
blkix = amp->nwords - 49;
endix = amp->nwords - 24;
mapix = 0;
bmsize = (amp->numblks + 31) / 32;
while (mapix < bmsize) {
int n;
u_long bits;
if (adoswordn(bp, blkix) == 0)
break;
if (mapbp != NULL)
brelse(mapbp, 0);
if ((error = bread(amp->devvp,
adoswordn(bp, blkix) * amp->bsize / DEV_BSIZE, amp->bsize,
NOCRED, 0, &mapbp)) != 0)
break;
if (adoscksum(mapbp, amp->nwords)) {
#ifdef DIAGNOSTIC
printf("adosfs: loadbitmap - cksum of blk %d failed\n",
adoswordn(bp, blkix));
#endif
/* XXX Force read-only? Set free space 0? */
break;
}
n = 1;
while (n < amp->nwords && mapix < bmsize) {
amp->bitmap[mapix++] = bits = adoswordn(mapbp, n);
++n;
if (mapix == bmsize && amp->numblks & 31)
bits &= ~(0xffffffff << (amp->numblks & 31));
while (bits) {
if (bits & 1)
++amp->freeblks;
bits >>= 1;
}
}
++blkix;
if (mapix < bmsize && blkix == endix) {
bn = adoswordn(bp, blkix);
brelse(bp, 0);
if ((error = bread(amp->devvp, bn * amp->bsize / DEV_BSIZE,
amp->bsize, NOCRED, 0, &bp)) != 0)
break;
/*
* Why is there no checksum on these blocks?
*/
blkix = 0;
endix = amp->nwords - 1;
}
}
if (bp)
brelse(bp, 0);
if (mapbp)
brelse(mapbp, 0);
return (error);
}
/*
* File handle to vnode
*
* Have to be really careful about stale file handles:
* - check that the inode number is in range
* - call iget() to get the locked inode
* - check for an unallocated inode (i_mode == 0)
* - check that the generation number matches
*/
struct ifid {
ushort ifid_len;
ushort ifid_pad;
int ifid_ino;
long ifid_start;
};
int
adosfs_fhtovp(mp, fhp, vpp)
struct mount *mp;
struct fid *fhp;
struct vnode **vpp;
{
struct ifid ifh;
#if 0
struct anode *ap;
#endif
struct vnode *nvp;
int error;
if (fhp->fid_len != sizeof(struct ifid))
return EINVAL;
#ifdef ADOSFS_DIAGNOSTIC
printf("adfhtovp(%x, %x, %x)\n", mp, fhp, vpp);
#endif
memcpy(&ifh, fhp, sizeof(ifh));
if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) {
*vpp = NULLVP;
return (error);
}
#if 0
ap = VTOA(nvp);
if (ap->inode.iso_mode == 0) {
vput(nvp);
*vpp = NULLVP;
return (ESTALE);
}
#endif
*vpp = nvp;
return(0);
}
int
adosfs_vptofh(vp, fhp, fh_size)
struct vnode *vp;
struct fid *fhp;
size_t *fh_size;
{
struct anode *ap = VTOA(vp);
struct ifid ifh;
if (*fh_size < sizeof(struct ifid)) {
*fh_size = sizeof(struct ifid);
return E2BIG;
}
*fh_size = sizeof(struct ifid);
memset(&ifh, 0, sizeof(ifh));
ifh.ifid_len = sizeof(struct ifid);
ifh.ifid_ino = ap->block;
ifh.ifid_start = ap->block;
memcpy(fhp, &ifh, sizeof(ifh));
#ifdef ADOSFS_DIAGNOSTIC
printf("advptofh(%x, %x)\n", vp, fhp);
#endif
return(0);
}
int
adosfs_sync(mp, waitfor, uc)
struct mount *mp;
int waitfor;
kauth_cred_t uc;
{
#ifdef ADOSFS_DIAGNOSTIC
printf("ad_sync(%x, %x)\n", mp, waitfor);
#endif
return(0);
}
void
adosfs_init()
{
malloc_type_attach(M_ADOSFSMNT);
malloc_type_attach(M_ANODE);
malloc_type_attach(M_ADOSFSBITMAP);
pool_init(&adosfs_node_pool, sizeof(struct anode), 0, 0, 0, "adosndpl",
&pool_allocator_nointr, IPL_NONE);
simple_lock_init(&adosfs_hashlock);
}
void
adosfs_done()
{
pool_destroy(&adosfs_node_pool);
malloc_type_detach(M_ADOSFSBITMAP);
malloc_type_detach(M_ANODE);
malloc_type_detach(M_ADOSFSMNT);
}
/*
* vfs generic function call table
*/
extern const struct vnodeopv_desc adosfs_vnodeop_opv_desc;
const struct vnodeopv_desc *adosfs_vnodeopv_descs[] = {
&adosfs_vnodeop_opv_desc,
NULL,
};
struct vfsops adosfs_vfsops = {
MOUNT_ADOSFS,
sizeof (struct adosfs_args),
adosfs_mount,
adosfs_start,
adosfs_unmount,
adosfs_root,
(void *)eopnotsupp, /* vfs_quotactl */
adosfs_statvfs,
adosfs_sync,
adosfs_vget,
adosfs_fhtovp,
adosfs_vptofh,
adosfs_init,
NULL,
adosfs_done,
NULL, /* vfs_mountroot */
(int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp,
vfs_stdextattrctl,
(void *)eopnotsupp, /* vfs_suspendctl */
genfs_renamelock_enter,
genfs_renamelock_exit,
(void *)eopnotsupp,
adosfs_vnodeopv_descs,
0,
{ NULL, NULL },
};
static int
adosfs_modcmd(modcmd_t cmd, void *arg)
{
int error;
switch (cmd) {
case MODULE_CMD_INIT:
error = vfs_attach(&adosfs_vfsops);
if (error != 0)
break;
sysctl_createv(&adosfs_sysctl_log, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "vfs", NULL,
NULL, 0, NULL, 0,
CTL_VFS, CTL_EOL);
sysctl_createv(&adosfs_sysctl_log, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "adosfs",
SYSCTL_DESCR("AmigaDOS file system"),
NULL, 0, NULL, 0,
CTL_VFS, 16, CTL_EOL);
/*
* XXX the "16" above could be dynamic, thereby eliminating
* one more instance of the "number to vfs" mapping problem,
* but "16" is the order as taken from sys/mount.h
*/
break;
case MODULE_CMD_FINI:
error = vfs_detach(&adosfs_vfsops);
if (error != 0)
break;
sysctl_teardown(&adosfs_sysctl_log);
break;
default:
error = ENOTTY;
break;
}
return (error);
}