/*
* Common code for mount and mountroot
*/
int
ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp,
struct ucred *cred)
{
struct buf *bp;
struct ntfsmount *ntmp;
cdev_t dev;
int error, ronly, ncount, i;
struct vnode *vp;
char cs_local[ICONV_CSNMAXLEN];
char cs_ntfs[ICONV_CSNMAXLEN];
/*
* 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 (devvp->v_object)
ncount -= 1;
if (ncount > 1)
return (EBUSY);
VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
error = vinvalbuf(devvp, V_SAVE, 0, 0);
VOP__UNLOCK(devvp, 0);
if (error)
return (error);
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL);
VOP__UNLOCK(devvp, 0);
if (error)
return (error);
dev = devvp->v_rdev;
bp = NULL;
error = bread(devvp, BBLOCK, BBSIZE, &bp);
if (error)
goto out;
ntmp = kmalloc(sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
/*
* We must not cache the boot block if its size is not exactly
* one cluster in order to avoid confusing the buffer cache when
* the boot file is read later by ntfs_readntvattr_plain(), which
* reads a cluster at a time.
*/
if (ntfs_cntob(1) != BBSIZE)
bp->b_flags |= B_NOCACHE;
brelse( bp );
bp = NULL;
if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
error = EINVAL;
dprintf(("ntfs_mountfs: invalid boot block\n"));
goto out;
}
{
int8_t cpr = ntmp->ntm_mftrecsz;
if( cpr > 0 )
ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
else
ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
}
dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
(u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
ntmp->ntm_mountp = mp;
ntmp->ntm_dev = dev;
ntmp->ntm_devvp = devvp;
ntmp->ntm_uid = argsp->uid;
ntmp->ntm_gid = argsp->gid;
ntmp->ntm_mode = argsp->mode;
ntmp->ntm_flag = argsp->flag;
if (argsp->flag & NTFS_MFLAG_KICONV && ntfs_iconv) {
bcopy(argsp->cs_local, cs_local, sizeof(cs_local));
bcopy(argsp->cs_ntfs, cs_ntfs, sizeof(cs_ntfs));
ntfs_82u_init(ntmp, cs_local, cs_ntfs);
ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
} else {
ntfs_82u_init(ntmp, NULL, NULL);
ntfs_u28_init(ntmp, ntmp->ntm_82u, NULL, NULL);
}
mp->mnt_data = (qaddr_t)ntmp;
dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
(ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
vfs_add_vnodeops(mp, &ntfs_vnode_vops, &mp->mnt_vn_norm_ops);
/*
* We read in some system nodes to do not allow
* reclaim them and to have everytime access to them.
*/
{
int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
for (i=0; i<3; i++) {
error = VFS_VGET(mp, NULL,
pi[i], &(ntmp->ntm_sysvn[pi[i]]));
if(error)
goto out1;
vsetflags(ntmp->ntm_sysvn[pi[i]], VSYSTEM);
vref(ntmp->ntm_sysvn[pi[i]]);
vput(ntmp->ntm_sysvn[pi[i]]);
}
}
/* read the Unicode lowercase --> uppercase translation table,
* if necessary */
if ((error = ntfs_toupper_use(mp, ntmp)))
goto out1;
/*
* Scan $BitMap and count free clusters
*/
error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
if(error)
goto out1;
/*
* Read and translate to internal format attribute
* definition file.
*/
{
int num,j;
struct attrdef ad;
/* Open $AttrDef */
error = VFS_VGET(mp, NULL, NTFS_ATTRDEFINO, &vp);
if(error)
goto out1;
/* Count valid entries */
for(num=0;;num++) {
error = ntfs_readattr(ntmp, VTONT(vp),
NTFS_A_DATA, NULL,
num * sizeof(ad), sizeof(ad),
&ad, NULL);
if (error)
goto out1;
if (ad.ad_name[0] == 0)
break;
}
/* Alloc memory for attribute definitions */
ntmp->ntm_ad = kmalloc(num * sizeof(struct ntvattrdef),
M_NTFSMNT, M_WAITOK);
ntmp->ntm_adnum = num;
/* Read them and translate */
for(i=0;i<num;i++){
error = ntfs_readattr(ntmp, VTONT(vp),
NTFS_A_DATA, NULL,
i * sizeof(ad), sizeof(ad),
&ad, NULL);
if (error)
goto out1;
j = 0;
do {
ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
} while(ad.ad_name[j++]);
ntmp->ntm_ad[i].ad_namelen = j - 1;
ntmp->ntm_ad[i].ad_type = ad.ad_type;
}
vput(vp);
}
mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
mp->mnt_maxsymlinklen = 0;
mp->mnt_flag |= MNT_LOCAL;
dev->si_mountpoint = mp;
return (0);
out1:
for(i=0;i<NTFS_SYSNODESNUM;i++)
if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
if (vflush(mp, 0, 0))
dprintf(("ntfs_mountfs: vflush failed\n"));
out:
dev->si_mountpoint = NULL;
if (bp)
brelse(bp);
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NULL);
vn_unlock(devvp);
return (error);
}
/*
* Common code for mount and mountroot
*/
int
ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp, struct lwp *l)
{
struct buf *bp;
struct ntfsmount *ntmp;
dev_t dev = devvp->v_rdev;
int error, i;
struct vnode *vp;
ntmp = NULL;
/*
* Flush out any old buffers remaining from a previous use.
*/
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0);
VOP_UNLOCK(devvp);
if (error)
return (error);
bp = NULL;
error = bread(devvp, BBLOCK, BBSIZE, NOCRED, 0, &bp);
if (error)
goto out;
ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK|M_ZERO);
memcpy( &ntmp->ntm_bootfile, bp->b_data, sizeof(struct bootfile) );
brelse( bp , 0 );
bp = NULL;
if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
error = EINVAL;
dprintf(("ntfs_mountfs: invalid boot block\n"));
goto out;
}
{
int8_t cpr = ntmp->ntm_mftrecsz;
if( cpr > 0 )
ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
else
ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
}
dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
(u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
ntmp->ntm_mountp = mp;
ntmp->ntm_dev = dev;
ntmp->ntm_devvp = devvp;
ntmp->ntm_uid = argsp->uid;
ntmp->ntm_gid = argsp->gid;
ntmp->ntm_mode = argsp->mode;
ntmp->ntm_flag = argsp->flag;
mp->mnt_data = ntmp;
/* set file name encode/decode hooks XXX utf-8 only for now */
ntmp->ntm_wget = ntfs_utf8_wget;
ntmp->ntm_wput = ntfs_utf8_wput;
ntmp->ntm_wcmp = ntfs_utf8_wcmp;
dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
(ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
/*
* We read in some system nodes to do not allow
* reclaim them and to have everytime access to them.
*/
{
int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
for (i=0; i<3; i++) {
error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]]));
if(error)
goto out1;
ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM;
vref(ntmp->ntm_sysvn[pi[i]]);
vput(ntmp->ntm_sysvn[pi[i]]);
}
}
/* read the Unicode lowercase --> uppercase translation table,
* if necessary */
if ((error = ntfs_toupper_use(mp, ntmp)))
goto out1;
/*
* Scan $BitMap and count free clusters
*/
error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
if(error)
goto out1;
/*
* Read and translate to internal format attribute
* definition file.
*/
{
int num,j;
struct attrdef ad;
/* Open $AttrDef */
error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp );
if(error)
goto out1;
/* Count valid entries */
for(num=0;;num++) {
error = ntfs_readattr(ntmp, VTONT(vp),
NTFS_A_DATA, NULL,
num * sizeof(ad), sizeof(ad),
&ad, NULL);
if (error)
goto out1;
if (ad.ad_name[0] == 0)
break;
}
/* Alloc memory for attribute definitions */
ntmp->ntm_ad = (struct ntvattrdef *) malloc(
num * sizeof(struct ntvattrdef),
M_NTFSMNT, M_WAITOK);
ntmp->ntm_adnum = num;
/* Read them and translate */
for(i=0;i<num;i++){
error = ntfs_readattr(ntmp, VTONT(vp),
NTFS_A_DATA, NULL,
i * sizeof(ad), sizeof(ad),
&ad, NULL);
if (error)
goto out1;
j = 0;
do {
ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
} while(ad.ad_name[j++]);
ntmp->ntm_ad[i].ad_namelen = j - 1;
ntmp->ntm_ad[i].ad_type = ad.ad_type;
}
vput(vp);
}
mp->mnt_stat.f_fsidx.__fsid_val[0] = dev;
mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS);
mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0];
mp->mnt_stat.f_namemax = NTFS_MAXFILENAME;
mp->mnt_flag |= MNT_LOCAL;
spec_node_setmountedfs(devvp, mp);
return (0);
out1:
for(i=0;i<NTFS_SYSNODESNUM;i++)
if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
if (vflush(mp,NULLVP,0)) {
dprintf(("ntfs_mountfs: vflush failed\n"));
}
out:
spec_node_setmountedfs(devvp, NULL);
if (bp)
brelse(bp, 0);
if (error) {
if (ntmp) {
if (ntmp->ntm_ad)
free(ntmp->ntm_ad, M_NTFSMNT);
free(ntmp, M_NTFSMNT);
}
}
return (error);
}