void
g_waitidlelock(void)
{
g_topology_assert();
mtx_lock(&g_eventlock);
while (!TAILQ_EMPTY(&g_events)) {
g_topology_unlock();
msleep(&g_pending_events, &g_eventlock, PPAUSE,
"g_waitidlel", hz/5);
g_topology_lock();
}
mtx_unlock(&g_eventlock);
}
/*
* Unmount system call.
*/
static int
ext2_unmount(struct mount *mp, int mntflags)
{
struct ext2mount *ump;
struct m_ext2fs *fs;
struct csum *sump;
int error, flags, i, ronly;
flags = 0;
if (mntflags & MNT_FORCE) {
if (mp->mnt_flag & MNT_ROOTFS)
return (EINVAL);
flags |= FORCECLOSE;
}
if ((error = ext2_flushfiles(mp, flags, curthread)) != 0)
return (error);
ump = VFSTOEXT2(mp);
fs = ump->um_e2fs;
ronly = fs->e2fs_ronly;
if (ronly == 0 && ext2_cgupdate(ump, MNT_WAIT) == 0) {
if (fs->e2fs_wasvalid)
fs->e2fs->e2fs_state |= E2FS_ISCLEAN;
ext2_sbupdate(ump, MNT_WAIT);
}
DROP_GIANT();
g_topology_lock();
g_vfs_close(ump->um_cp);
g_topology_unlock();
PICKUP_GIANT();
vrele(ump->um_devvp);
sump = fs->e2fs_clustersum;
for (i = 0; i < fs->e2fs_gcount; i++, sump++)
free(sump->cs_sum, M_EXT2MNT);
free(fs->e2fs_clustersum, M_EXT2MNT);
free(fs->e2fs_maxcluster, M_EXT2MNT);
free(fs->e2fs_gd, M_EXT2MNT);
free(fs->e2fs_contigdirs, M_EXT2MNT);
free(fs->e2fs, M_EXT2MNT);
free(fs, M_EXT2MNT);
free(ump, M_EXT2MNT);
mp->mnt_data = NULL;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_LOCAL;
MNT_IUNLOCK(mp);
return (error);
}
static int
udf_unmount(struct mount *mp, int mntflags)
{
struct udf_mnt *udfmp;
int error, flags = 0;
udfmp = VFSTOUDFFS(mp);
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
if ((error = vflush(mp, 0, flags, curthread)))
return (error);
if (udfmp->im_flags & UDFMNT_KICONV && udf_iconv) {
if (udfmp->im_d2l)
udf_iconv->close(udfmp->im_d2l);
#if 0
if (udfmp->im_l2d)
udf_iconv->close(udfmp->im_l2d);
#endif
}
DROP_GIANT();
g_topology_lock();
g_vfs_close(udfmp->im_cp);
g_topology_unlock();
PICKUP_GIANT();
vrele(udfmp->im_devvp);
dev_rel(udfmp->im_dev);
if (udfmp->s_table != NULL)
free(udfmp->s_table, M_UDFMOUNT);
free(udfmp, M_UDFMOUNT);
mp->mnt_data = NULL;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_LOCAL;
MNT_IUNLOCK(mp);
return (0);
}
static int
g_mbr_ioctl(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td)
{
struct g_geom *gp;
struct g_mbr_softc *ms;
struct g_slicer *gsp;
struct g_consumer *cp;
int error, opened;
gp = pp->geom;
gsp = gp->softc;
ms = gsp->softc;
opened = 0;
error = 0;
switch(cmd) {
case DIOCSMBR: {
if (!(fflag & FWRITE))
return (EPERM);
DROP_GIANT();
g_topology_lock();
cp = LIST_FIRST(&gp->consumer);
if (cp->acw == 0) {
error = g_access(cp, 0, 1, 0);
if (error == 0)
opened = 1;
}
if (!error)
error = g_mbr_modify(gp, ms, data, 512);
if (!error)
error = g_write_data(cp, 0, data, 512);
if (opened)
g_access(cp, 0, -1 , 0);
g_topology_unlock();
PICKUP_GIANT();
return(error);
}
default:
return (ENOIOCTL);
}
}
static int
udf_mountfs(struct vnode *devvp, struct mount *mp)
{
struct buf *bp = NULL;
struct cdev *dev;
struct anchor_vdp avdp;
struct udf_mnt *udfmp = NULL;
struct part_desc *pd;
struct logvol_desc *lvd;
struct fileset_desc *fsd;
struct file_entry *root_fentry;
uint32_t sector, size, mvds_start, mvds_end;
uint32_t logical_secsize;
uint32_t fsd_offset = 0;
uint16_t part_num = 0, fsd_part = 0;
int error = EINVAL;
int logvol_found = 0, part_found = 0, fsd_found = 0;
int bsize;
struct g_consumer *cp;
struct bufobj *bo;
dev = devvp->v_rdev;
dev_ref(dev);
DROP_GIANT();
g_topology_lock();
error = g_vfs_open(devvp, &cp, "udf", 0);
g_topology_unlock();
PICKUP_GIANT();
VOP_UNLOCK(devvp, 0);
if (error)
goto bail;
bo = &devvp->v_bufobj;
if (devvp->v_rdev->si_iosize_max != 0)
mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max;
if (mp->mnt_iosize_max > MAXPHYS)
mp->mnt_iosize_max = MAXPHYS;
/* XXX: should be M_WAITOK */
udfmp = malloc(sizeof(struct udf_mnt), M_UDFMOUNT,
M_NOWAIT | M_ZERO);
if (udfmp == NULL) {
printf("Cannot allocate UDF mount struct\n");
error = ENOMEM;
goto bail;
}
mp->mnt_data = udfmp;
mp->mnt_stat.f_fsid.val[0] = dev2udev(devvp->v_rdev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
MNT_ILOCK(mp);
mp->mnt_flag |= MNT_LOCAL;
mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_EXTENDED_SHARED;
MNT_IUNLOCK(mp);
udfmp->im_mountp = mp;
udfmp->im_dev = dev;
udfmp->im_devvp = devvp;
udfmp->im_d2l = NULL;
udfmp->im_cp = cp;
udfmp->im_bo = bo;
#if 0
udfmp->im_l2d = NULL;
#endif
/*
* The UDF specification defines a logical sectorsize of 2048
* for DVD media.
*/
logical_secsize = 2048;
if (((logical_secsize % cp->provider->sectorsize) != 0) ||
(logical_secsize < cp->provider->sectorsize)) {
error = EINVAL;
goto bail;
}
bsize = cp->provider->sectorsize;
/*
* Get the Anchor Volume Descriptor Pointer from sector 256.
* XXX Should also check sector n - 256, n, and 512.
*/
sector = 256;
if ((error = bread(devvp, sector * btodb(logical_secsize), bsize,
NOCRED, &bp)) != 0)
goto bail;
if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR)))
goto bail;
bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp));
brelse(bp);
bp = NULL;
/*
* Extract the Partition Descriptor and Logical Volume Descriptor
* from the Volume Descriptor Sequence.
* XXX Should we care about the partition type right now?
* XXX What about multiple partitions?
*/
mvds_start = le32toh(avdp.main_vds_ex.loc);
mvds_end = mvds_start + (le32toh(avdp.main_vds_ex.len) - 1) / bsize;
for (sector = mvds_start; sector < mvds_end; sector++) {
if ((error = bread(devvp, sector * btodb(logical_secsize),
bsize, NOCRED, &bp)) != 0) {
printf("Can't read sector %d of VDS\n", sector);
goto bail;
}
lvd = (struct logvol_desc *)bp->b_data;
if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) {
udfmp->bsize = le32toh(lvd->lb_size);
udfmp->bmask = udfmp->bsize - 1;
udfmp->bshift = ffs(udfmp->bsize) - 1;
fsd_part = le16toh(lvd->_lvd_use.fsd_loc.loc.part_num);
fsd_offset = le32toh(lvd->_lvd_use.fsd_loc.loc.lb_num);
if (udf_find_partmaps(udfmp, lvd))
break;
logvol_found = 1;
}
pd = (struct part_desc *)bp->b_data;
if (!udf_checktag(&pd->tag, TAGID_PARTITION)) {
part_found = 1;
part_num = le16toh(pd->part_num);
udfmp->part_len = le32toh(pd->part_len);
udfmp->part_start = le32toh(pd->start_loc);
}
brelse(bp);
bp = NULL;
if ((part_found) && (logvol_found))
break;
}
if (!part_found || !logvol_found) {
error = EINVAL;
goto bail;
}
if (fsd_part != part_num) {
printf("FSD does not lie within the partition!\n");
error = EINVAL;
goto bail;
}
/*
* Grab the Fileset Descriptor
* Thanks to Chuck McCrobie <*****@*****.**> for pointing
* me in the right direction here.
*/
sector = udfmp->part_start + fsd_offset;
if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) {
printf("Cannot read sector %d of FSD\n", sector);
goto bail;
}
fsd = (struct fileset_desc *)bp->b_data;
if (!udf_checktag(&fsd->tag, TAGID_FSD)) {
fsd_found = 1;
bcopy(&fsd->rootdir_icb, &udfmp->root_icb,
sizeof(struct long_ad));
}
brelse(bp);
bp = NULL;
if (!fsd_found) {
printf("Couldn't find the fsd\n");
error = EINVAL;
goto bail;
}
/*
* Find the file entry for the root directory.
*/
sector = le32toh(udfmp->root_icb.loc.lb_num) + udfmp->part_start;
size = le32toh(udfmp->root_icb.len);
if ((error = udf_readdevblks(udfmp, sector, size, &bp)) != 0) {
printf("Cannot read sector %d\n", sector);
goto bail;
}
root_fentry = (struct file_entry *)bp->b_data;
if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) {
printf("Invalid root file entry!\n");
goto bail;
}
brelse(bp);
bp = NULL;
return 0;
bail:
if (udfmp != NULL)
free(udfmp, M_UDFMOUNT);
if (bp != NULL)
brelse(bp);
if (cp != NULL) {
DROP_GIANT();
g_topology_lock();
g_vfs_close(cp);
g_topology_unlock();
PICKUP_GIANT();
}
dev_rel(dev);
return error;
};
/*
* Unmount the filesystem described by mp.
*/
static int
msdosfs_unmount(struct mount *mp, int mntflags)
{
struct msdosfsmount *pmp;
int error, flags;
error = flags = 0;
pmp = VFSTOMSDOSFS(mp);
if ((pmp->pm_flags & MSDOSFSMNT_RONLY) == 0)
error = msdosfs_sync(mp, MNT_WAIT);
if ((mntflags & MNT_FORCE) != 0)
flags |= FORCECLOSE;
else if (error != 0)
return (error);
error = vflush(mp, 0, flags, curthread);
if (error != 0 && error != ENXIO)
return (error);
if ((pmp->pm_flags & MSDOSFSMNT_RONLY) == 0) {
error = markvoldirty(pmp, 0);
if (error && error != ENXIO) {
(void)markvoldirty(pmp, 1);
return (error);
}
}
if (pmp->pm_flags & MSDOSFSMNT_KICONV && msdosfs_iconv) {
if (pmp->pm_w2u)
msdosfs_iconv->close(pmp->pm_w2u);
if (pmp->pm_u2w)
msdosfs_iconv->close(pmp->pm_u2w);
if (pmp->pm_d2u)
msdosfs_iconv->close(pmp->pm_d2u);
if (pmp->pm_u2d)
msdosfs_iconv->close(pmp->pm_u2d);
}
#ifdef MSDOSFS_DEBUG
{
struct vnode *vp = pmp->pm_devvp;
struct bufobj *bo;
bo = &vp->v_bufobj;
BO_LOCK(bo);
VI_LOCK(vp);
vn_printf(vp,
"msdosfs_umount(): just before calling VOP_CLOSE()\n");
printf("freef %p, freeb %p, mount %p\n",
TAILQ_NEXT(vp, v_actfreelist), vp->v_actfreelist.tqe_prev,
vp->v_mount);
printf("cleanblkhd %p, dirtyblkhd %p, numoutput %ld, type %d\n",
TAILQ_FIRST(&vp->v_bufobj.bo_clean.bv_hd),
TAILQ_FIRST(&vp->v_bufobj.bo_dirty.bv_hd),
vp->v_bufobj.bo_numoutput, vp->v_type);
VI_UNLOCK(vp);
BO_UNLOCK(bo);
}
#endif
DROP_GIANT();
if (pmp->pm_devvp->v_type == VCHR && pmp->pm_devvp->v_rdev != NULL)
pmp->pm_devvp->v_rdev->si_mountpt = NULL;
g_topology_lock();
g_vfs_close(pmp->pm_cp);
g_topology_unlock();
PICKUP_GIANT();
vrele(pmp->pm_devvp);
dev_rel(pmp->pm_dev);
free(pmp->pm_inusemap, M_MSDOSFSFAT);
if (pmp->pm_flags & MSDOSFS_LARGEFS)
msdosfs_fileno_free(mp);
lockdestroy(&pmp->pm_fatlock);
free(pmp, M_MSDOSFSMNT);
mp->mnt_data = NULL;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_LOCAL;
MNT_IUNLOCK(mp);
return (error);
}
static int
mountmsdosfs(struct vnode *devvp, struct mount *mp)
{
struct msdosfsmount *pmp;
struct buf *bp;
struct cdev *dev;
union bootsector *bsp;
struct byte_bpb33 *b33;
struct byte_bpb50 *b50;
struct byte_bpb710 *b710;
u_int8_t SecPerClust;
u_long clusters;
int ronly, error;
struct g_consumer *cp;
struct bufobj *bo;
bp = NULL; /* This and pmp both used in error_exit. */
pmp = NULL;
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
dev = devvp->v_rdev;
dev_ref(dev);
DROP_GIANT();
g_topology_lock();
error = g_vfs_open(devvp, &cp, "msdosfs", ronly ? 0 : 1);
g_topology_unlock();
PICKUP_GIANT();
VOP_UNLOCK(devvp, 0);
if (error)
goto error_exit;
bo = &devvp->v_bufobj;
/*
* Read the boot sector of the filesystem, and then check the
* boot signature. If not a dos boot sector then error out.
*
* NOTE: 8192 is a magic size that works for ffs.
*/
error = bread(devvp, 0, 8192, NOCRED, &bp);
if (error)
goto error_exit;
bp->b_flags |= B_AGE;
bsp = (union bootsector *)bp->b_data;
b33 = (struct byte_bpb33 *)bsp->bs33.bsBPB;
b50 = (struct byte_bpb50 *)bsp->bs50.bsBPB;
b710 = (struct byte_bpb710 *)bsp->bs710.bsBPB;
#ifndef MSDOSFS_NOCHECKSIG
if (bsp->bs50.bsBootSectSig0 != BOOTSIG0
|| bsp->bs50.bsBootSectSig1 != BOOTSIG1) {
error = EINVAL;
goto error_exit;
}
#endif
pmp = malloc(sizeof *pmp, M_MSDOSFSMNT, M_WAITOK | M_ZERO);
pmp->pm_mountp = mp;
pmp->pm_cp = cp;
pmp->pm_bo = bo;
lockinit(&pmp->pm_fatlock, 0, msdosfs_lock_msg, 0, 0);
/*
* Initialize ownerships and permissions, since nothing else will
* initialize them iff we are mounting root.
*/
pmp->pm_uid = UID_ROOT;
pmp->pm_gid = GID_WHEEL;
pmp->pm_mask = pmp->pm_dirmask = S_IXUSR | S_IXGRP | S_IXOTH |
S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR;
/*
* Experimental support for large MS-DOS filesystems.
* WARNING: This uses at least 32 bytes of kernel memory (which is not
* reclaimed until the FS is unmounted) for each file on disk to map
* between the 32-bit inode numbers used by VFS and the 64-bit
* pseudo-inode numbers used internally by msdosfs. This is only
* safe to use in certain controlled situations (e.g. read-only FS
* with less than 1 million files).
* Since the mappings do not persist across unmounts (or reboots), these
* filesystems are not suitable for exporting through NFS, or any other
* application that requires fixed inode numbers.
*/
vfs_flagopt(mp->mnt_optnew, "large", &pmp->pm_flags, MSDOSFS_LARGEFS);
/*
* Compute several useful quantities from the bpb in the
* bootsector. Copy in the dos 5 variant of the bpb then fix up
* the fields that are different between dos 5 and dos 3.3.
*/
SecPerClust = b50->bpbSecPerClust;
pmp->pm_BytesPerSec = getushort(b50->bpbBytesPerSec);
if (pmp->pm_BytesPerSec < DEV_BSIZE) {
error = EINVAL;
goto error_exit;
}
pmp->pm_ResSectors = getushort(b50->bpbResSectors);
pmp->pm_FATs = b50->bpbFATs;
pmp->pm_RootDirEnts = getushort(b50->bpbRootDirEnts);
pmp->pm_Sectors = getushort(b50->bpbSectors);
pmp->pm_FATsecs = getushort(b50->bpbFATsecs);
pmp->pm_SecPerTrack = getushort(b50->bpbSecPerTrack);
pmp->pm_Heads = getushort(b50->bpbHeads);
pmp->pm_Media = b50->bpbMedia;
/* calculate the ratio of sector size to DEV_BSIZE */
pmp->pm_BlkPerSec = pmp->pm_BytesPerSec / DEV_BSIZE;
/*
* We don't check pm_Heads nor pm_SecPerTrack, because
* these may not be set for EFI file systems. We don't
* use these anyway, so we're unaffected if they are
* invalid.
*/
if (!pmp->pm_BytesPerSec || !SecPerClust) {
error = EINVAL;
goto error_exit;
}
if (pmp->pm_Sectors == 0) {
pmp->pm_HiddenSects = getulong(b50->bpbHiddenSecs);
pmp->pm_HugeSectors = getulong(b50->bpbHugeSectors);
} else {
pmp->pm_HiddenSects = getushort(b33->bpbHiddenSecs);
pmp->pm_HugeSectors = pmp->pm_Sectors;
}
if (!(pmp->pm_flags & MSDOSFS_LARGEFS)) {
if (pmp->pm_HugeSectors > 0xffffffff /
(pmp->pm_BytesPerSec / sizeof(struct direntry)) + 1) {
/*
* We cannot deal currently with this size of disk
* due to fileid limitations (see msdosfs_getattr and
* msdosfs_readdir)
*/
error = EINVAL;
vfs_mount_error(mp,
"Disk too big, try '-o large' mount option");
goto error_exit;
}
}
if (pmp->pm_RootDirEnts == 0) {
if (pmp->pm_FATsecs
|| getushort(b710->bpbFSVers)) {
error = EINVAL;
#ifdef MSDOSFS_DEBUG
printf("mountmsdosfs(): bad FAT32 filesystem\n");
#endif
goto error_exit;
}
pmp->pm_fatmask = FAT32_MASK;
pmp->pm_fatmult = 4;
pmp->pm_fatdiv = 1;
pmp->pm_FATsecs = getulong(b710->bpbBigFATsecs);
if (getushort(b710->bpbExtFlags) & FATMIRROR)
pmp->pm_curfat = getushort(b710->bpbExtFlags) & FATNUM;
else
pmp->pm_flags |= MSDOSFS_FATMIRROR;
} else
pmp->pm_flags |= MSDOSFS_FATMIRROR;
/*
* Check a few values (could do some more):
* - logical sector size: power of 2, >= block size
* - sectors per cluster: power of 2, >= 1
* - number of sectors: >= 1, <= size of partition
* - number of FAT sectors: >= 1
*/
if ( (SecPerClust == 0)
|| (SecPerClust & (SecPerClust - 1))
|| (pmp->pm_BytesPerSec < DEV_BSIZE)
|| (pmp->pm_BytesPerSec & (pmp->pm_BytesPerSec - 1))
|| (pmp->pm_HugeSectors == 0)
|| (pmp->pm_FATsecs == 0)
|| (SecPerClust * pmp->pm_BlkPerSec > MAXBSIZE / DEV_BSIZE)
) {
error = EINVAL;
goto error_exit;
}
pmp->pm_HugeSectors *= pmp->pm_BlkPerSec;
pmp->pm_HiddenSects *= pmp->pm_BlkPerSec; /* XXX not used? */
pmp->pm_FATsecs *= pmp->pm_BlkPerSec;
SecPerClust *= pmp->pm_BlkPerSec;
pmp->pm_fatblk = pmp->pm_ResSectors * pmp->pm_BlkPerSec;
if (FAT32(pmp)) {
pmp->pm_rootdirblk = getulong(b710->bpbRootClust);
pmp->pm_firstcluster = pmp->pm_fatblk
+ (pmp->pm_FATs * pmp->pm_FATsecs);
pmp->pm_fsinfo = getushort(b710->bpbFSInfo) * pmp->pm_BlkPerSec;
} else {
pmp->pm_rootdirblk = pmp->pm_fatblk +
(pmp->pm_FATs * pmp->pm_FATsecs);
pmp->pm_rootdirsize = howmany(pmp->pm_RootDirEnts *
sizeof(struct direntry), DEV_BSIZE); /* in blocks */
pmp->pm_firstcluster = pmp->pm_rootdirblk + pmp->pm_rootdirsize;
}
pmp->pm_maxcluster = (pmp->pm_HugeSectors - pmp->pm_firstcluster) /
SecPerClust + 1;
pmp->pm_fatsize = pmp->pm_FATsecs * DEV_BSIZE; /* XXX not used? */
if (pmp->pm_fatmask == 0) {
if (pmp->pm_maxcluster
<= ((CLUST_RSRVD - CLUST_FIRST) & FAT12_MASK)) {
/*
* This will usually be a floppy disk. This size makes
* sure that one fat entry will not be split across
* multiple blocks.
*/
pmp->pm_fatmask = FAT12_MASK;
pmp->pm_fatmult = 3;
pmp->pm_fatdiv = 2;
} else {
pmp->pm_fatmask = FAT16_MASK;
pmp->pm_fatmult = 2;
pmp->pm_fatdiv = 1;
}
}
clusters = (pmp->pm_fatsize / pmp->pm_fatmult) * pmp->pm_fatdiv;
if (pmp->pm_maxcluster >= clusters) {
#ifdef MSDOSFS_DEBUG
printf("Warning: number of clusters (%ld) exceeds FAT "
"capacity (%ld)\n", pmp->pm_maxcluster + 1, clusters);
#endif
pmp->pm_maxcluster = clusters - 1;
}
if (FAT12(pmp))
pmp->pm_fatblocksize = 3 * 512;
else
pmp->pm_fatblocksize = PAGE_SIZE;
pmp->pm_fatblocksize = roundup(pmp->pm_fatblocksize,
pmp->pm_BytesPerSec);
pmp->pm_fatblocksec = pmp->pm_fatblocksize / DEV_BSIZE;
pmp->pm_bnshift = ffs(DEV_BSIZE) - 1;
/*
* Compute mask and shift value for isolating cluster relative byte
* offsets and cluster numbers from a file offset.
*/
pmp->pm_bpcluster = SecPerClust * DEV_BSIZE;
pmp->pm_crbomask = pmp->pm_bpcluster - 1;
pmp->pm_cnshift = ffs(pmp->pm_bpcluster) - 1;
/*
* Check for valid cluster size
* must be a power of 2
*/
if (pmp->pm_bpcluster ^ (1 << pmp->pm_cnshift)) {
error = EINVAL;
goto error_exit;
}
/*
* Release the bootsector buffer.
*/
brelse(bp);
bp = NULL;
/*
* Check the fsinfo sector if we have one. Silently fix up our
* in-core copy of fp->fsinxtfree if it is unknown (0xffffffff)
* or too large. Ignore fp->fsinfree for now, since we need to
* read the entire FAT anyway to fill the inuse map.
*/
if (pmp->pm_fsinfo) {
struct fsinfo *fp;
if ((error = bread(devvp, pmp->pm_fsinfo, pmp->pm_BytesPerSec,
NOCRED, &bp)) != 0)
goto error_exit;
fp = (struct fsinfo *)bp->b_data;
if (!bcmp(fp->fsisig1, "RRaA", 4)
&& !bcmp(fp->fsisig2, "rrAa", 4)
&& !bcmp(fp->fsisig3, "\0\0\125\252", 4)) {
pmp->pm_nxtfree = getulong(fp->fsinxtfree);
if (pmp->pm_nxtfree > pmp->pm_maxcluster)
pmp->pm_nxtfree = CLUST_FIRST;
} else
pmp->pm_fsinfo = 0;
brelse(bp);
bp = NULL;
}
/*
* Finish initializing pmp->pm_nxtfree (just in case the first few
* sectors aren't properly reserved in the FAT). This completes
* the fixup for fp->fsinxtfree, and fixes up the zero-initialized
* value if there is no fsinfo. We will use pmp->pm_nxtfree
* internally even if there is no fsinfo.
*/
if (pmp->pm_nxtfree < CLUST_FIRST)
pmp->pm_nxtfree = CLUST_FIRST;
/*
* Allocate memory for the bitmap of allocated clusters, and then
* fill it in.
*/
pmp->pm_inusemap = malloc(howmany(pmp->pm_maxcluster + 1, N_INUSEBITS)
* sizeof(*pmp->pm_inusemap),
M_MSDOSFSFAT, M_WAITOK);
/*
* fillinusemap() needs pm_devvp.
*/
pmp->pm_devvp = devvp;
pmp->pm_dev = dev;
/*
* Have the inuse map filled in.
*/
MSDOSFS_LOCK_MP(pmp);
error = fillinusemap(pmp);
MSDOSFS_UNLOCK_MP(pmp);
if (error != 0)
goto error_exit;
/*
* If they want fat updates to be synchronous then let them suffer
* the performance degradation in exchange for the on disk copy of
* the fat being correct just about all the time. I suppose this
* would be a good thing to turn on if the kernel is still flakey.
*/
if (mp->mnt_flag & MNT_SYNCHRONOUS)
pmp->pm_flags |= MSDOSFSMNT_WAITONFAT;
/*
* Finish up.
*/
if (ronly)
pmp->pm_flags |= MSDOSFSMNT_RONLY;
else {
if ((error = markvoldirty(pmp, 1)) != 0) {
(void)markvoldirty(pmp, 0);
goto error_exit;
}
pmp->pm_fmod = 1;
}
mp->mnt_data = pmp;
mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
MNT_ILOCK(mp);
mp->mnt_flag |= MNT_LOCAL;
mp->mnt_kern_flag |= MNTK_USES_BCACHE;
MNT_IUNLOCK(mp);
if (pmp->pm_flags & MSDOSFS_LARGEFS)
msdosfs_fileno_init(mp);
return 0;
error_exit:
if (bp)
brelse(bp);
if (cp != NULL) {
DROP_GIANT();
g_topology_lock();
g_vfs_close(cp);
g_topology_unlock();
PICKUP_GIANT();
}
if (pmp) {
lockdestroy(&pmp->pm_fatlock);
if (pmp->pm_inusemap)
free(pmp->pm_inusemap, M_MSDOSFSFAT);
free(pmp, M_MSDOSFSMNT);
mp->mnt_data = NULL;
}
dev_rel(dev);
return (error);
}
/*
* mp - path - addr in user space of mount point (ie /usr or whatever)
* data - addr in user space of mount params including the name of the block
* special file to treat as a filesystem.
*/
static int
msdosfs_mount(struct mount *mp)
{
struct vnode *devvp; /* vnode for blk device to mount */
struct thread *td;
/* msdosfs specific mount control block */
struct msdosfsmount *pmp = NULL;
struct nameidata ndp;
int error, flags;
accmode_t accmode;
char *from;
td = curthread;
if (vfs_filteropt(mp->mnt_optnew, msdosfs_opts))
return (EINVAL);
/*
* 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) {
pmp = VFSTOMSDOSFS(mp);
if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) {
/*
* Forbid export requests if filesystem has
* MSDOSFS_LARGEFS flag set.
*/
if ((pmp->pm_flags & MSDOSFS_LARGEFS) != 0) {
vfs_mount_error(mp,
"MSDOSFS_LARGEFS flag set, cannot export");
return (EOPNOTSUPP);
}
}
if (!(pmp->pm_flags & MSDOSFSMNT_RONLY) &&
vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) {
error = VFS_SYNC(mp, MNT_WAIT);
if (error)
return (error);
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
error = vflush(mp, 0, flags, td);
if (error)
return (error);
/*
* Now the volume is clean. Mark it so while the
* device is still rw.
*/
error = markvoldirty(pmp, 0);
if (error) {
(void)markvoldirty(pmp, 1);
return (error);
}
/* Downgrade the device from rw to ro. */
DROP_GIANT();
g_topology_lock();
error = g_access(pmp->pm_cp, 0, -1, 0);
g_topology_unlock();
PICKUP_GIANT();
if (error) {
(void)markvoldirty(pmp, 1);
return (error);
}
/*
* Backing out after an error was painful in the
* above. Now we are committed to succeeding.
*/
pmp->pm_fmod = 0;
pmp->pm_flags |= MSDOSFSMNT_RONLY;
MNT_ILOCK(mp);
mp->mnt_flag |= MNT_RDONLY;
MNT_IUNLOCK(mp);
} else if ((pmp->pm_flags & MSDOSFSMNT_RONLY) &&
!vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) {
/*
* If upgrade to read-write by non-root, then verify
* that user has necessary permissions on the device.
*/
devvp = pmp->pm_devvp;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_ACCESS(devvp, VREAD | VWRITE,
td->td_ucred, td);
if (error)
error = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (error) {
VOP_UNLOCK(devvp, 0);
return (error);
}
VOP_UNLOCK(devvp, 0);
DROP_GIANT();
g_topology_lock();
error = g_access(pmp->pm_cp, 0, 1, 0);
g_topology_unlock();
PICKUP_GIANT();
if (error)
return (error);
pmp->pm_fmod = 1;
pmp->pm_flags &= ~MSDOSFSMNT_RONLY;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_RDONLY;
MNT_IUNLOCK(mp);
/* Now that the volume is modifiable, mark it dirty. */
error = markvoldirty(pmp, 1);
if (error)
return (error);
}
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible disk device.
*/
if (vfs_getopt(mp->mnt_optnew, "from", (void **)&from, NULL))
return (EINVAL);
NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, td);
error = namei(&ndp);
if (error)
return (error);
devvp = ndp.ni_vp;
NDFREE(&ndp, NDF_ONLY_PNBUF);
if (!vn_isdisk(devvp, &error)) {
vput(devvp);
return (error);
}
/*
* If mount by non-root, then verify that user has necessary
* permissions on the device.
*/
accmode = VREAD;
if ((mp->mnt_flag & MNT_RDONLY) == 0)
accmode |= VWRITE;
error = VOP_ACCESS(devvp, accmode, td->td_ucred, td);
if (error)
error = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (error) {
vput(devvp);
return (error);
}
if ((mp->mnt_flag & MNT_UPDATE) == 0) {
error = mountmsdosfs(devvp, mp);
#ifdef MSDOSFS_DEBUG /* only needed for the printf below */
pmp = VFSTOMSDOSFS(mp);
#endif
} else {
vput(devvp);
if (devvp != pmp->pm_devvp)
return (EINVAL); /* XXX needs translation */
}
if (error) {
vrele(devvp);
return (error);
}
error = update_mp(mp, td);
if (error) {
if ((mp->mnt_flag & MNT_UPDATE) == 0)
msdosfs_unmount(mp, MNT_FORCE);
return error;
}
if (devvp->v_type == VCHR && devvp->v_rdev != NULL)
devvp->v_rdev->si_mountpt = mp;
vfs_mountedfrom(mp, from);
#ifdef MSDOSFS_DEBUG
printf("msdosfs_mount(): mp %p, pmp %p, inusemap %p\n", mp, pmp, pmp->pm_inusemap);
#endif
return (0);
}
/*
* Common code for mount and mountroot.
*/
static int
ext2_mountfs(struct vnode *devvp, struct mount *mp)
{
struct ext2mount *ump;
struct buf *bp;
struct m_ext2fs *fs;
struct ext2fs *es;
struct cdev *dev = devvp->v_rdev;
struct g_consumer *cp;
struct bufobj *bo;
struct csum *sump;
int error;
int ronly;
int i, size;
int32_t *lp;
ronly = vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0);
/* XXX: use VOP_ACESS to check FS perms */
DROP_GIANT();
g_topology_lock();
error = g_vfs_open(devvp, &cp, "ext2fs", ronly ? 0 : 1);
g_topology_unlock();
PICKUP_GIANT();
VOP_UNLOCK(devvp, 0);
if (error)
return (error);
/* XXX: should we check for some sectorsize or 512 instead? */
if (((SBSIZE % cp->provider->sectorsize) != 0) ||
(SBSIZE < cp->provider->sectorsize)) {
DROP_GIANT();
g_topology_lock();
g_vfs_close(cp);
g_topology_unlock();
PICKUP_GIANT();
return (EINVAL);
}
bo = &devvp->v_bufobj;
bo->bo_private = cp;
bo->bo_ops = g_vfs_bufops;
if (devvp->v_rdev->si_iosize_max != 0)
mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max;
if (mp->mnt_iosize_max > MAXPHYS)
mp->mnt_iosize_max = MAXPHYS;
bp = NULL;
ump = NULL;
if ((error = bread(devvp, SBLOCK, SBSIZE, NOCRED, &bp)) != 0)
goto out;
es = (struct ext2fs *)bp->b_data;
if (ext2_check_sb_compat(es, dev, ronly) != 0) {
error = EINVAL; /* XXX needs translation */
goto out;
}
if ((es->e2fs_state & E2FS_ISCLEAN) == 0 ||
(es->e2fs_state & E2FS_ERRORS)) {
if (ronly || (mp->mnt_flag & MNT_FORCE)) {
printf(
"WARNING: Filesystem was not properly dismounted\n");
} else {
printf(
"WARNING: R/W mount denied. Filesystem is not clean - run fsck\n");
error = EPERM;
goto out;
}
}
ump = malloc(sizeof(*ump), M_EXT2MNT, M_WAITOK | M_ZERO);
/*
* I don't know whether this is the right strategy. Note that
* we dynamically allocate both an ext2_sb_info and an ext2_super_block
* while Linux keeps the super block in a locked buffer.
*/
ump->um_e2fs = malloc(sizeof(struct m_ext2fs),
M_EXT2MNT, M_WAITOK);
ump->um_e2fs->e2fs = malloc(sizeof(struct ext2fs),
M_EXT2MNT, M_WAITOK);
mtx_init(EXT2_MTX(ump), "EXT2FS", "EXT2FS Lock", MTX_DEF);
bcopy(es, ump->um_e2fs->e2fs, (u_int)sizeof(struct ext2fs));
if ((error = compute_sb_data(devvp, ump->um_e2fs->e2fs, ump->um_e2fs)))
goto out;
/*
* Calculate the maximum contiguous blocks and size of cluster summary
* array. In FFS this is done by newfs; however, the superblock
* in ext2fs doesn't have these variables, so we can calculate
* them here.
*/
ump->um_e2fs->e2fs_maxcontig = MAX(1, MAXPHYS / ump->um_e2fs->e2fs_bsize);
if (ump->um_e2fs->e2fs_maxcontig > 0)
ump->um_e2fs->e2fs_contigsumsize =
MIN(ump->um_e2fs->e2fs_maxcontig, EXT2_MAXCONTIG);
else
ump->um_e2fs->e2fs_contigsumsize = 0;
if (ump->um_e2fs->e2fs_contigsumsize > 0) {
size = ump->um_e2fs->e2fs_gcount * sizeof(int32_t);
ump->um_e2fs->e2fs_maxcluster = malloc(size, M_EXT2MNT, M_WAITOK);
size = ump->um_e2fs->e2fs_gcount * sizeof(struct csum);
ump->um_e2fs->e2fs_clustersum = malloc(size, M_EXT2MNT, M_WAITOK);
lp = ump->um_e2fs->e2fs_maxcluster;
sump = ump->um_e2fs->e2fs_clustersum;
for (i = 0; i < ump->um_e2fs->e2fs_gcount; i++, sump++) {
*lp++ = ump->um_e2fs->e2fs_contigsumsize;
sump->cs_init = 0;
sump->cs_sum = malloc((ump->um_e2fs->e2fs_contigsumsize + 1) *
sizeof(int32_t), M_EXT2MNT, M_WAITOK | M_ZERO);
}
}
brelse(bp);
bp = NULL;
fs = ump->um_e2fs;
fs->e2fs_ronly = ronly; /* ronly is set according to mnt_flags */
/*
* If the fs is not mounted read-only, make sure the super block is
* always written back on a sync().
*/
fs->e2fs_wasvalid = fs->e2fs->e2fs_state & E2FS_ISCLEAN ? 1 : 0;
if (ronly == 0) {
fs->e2fs_fmod = 1; /* mark it modified */
fs->e2fs->e2fs_state &= ~E2FS_ISCLEAN; /* set fs invalid */
}
mp->mnt_data = ump;
mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
mp->mnt_maxsymlinklen = EXT2_MAXSYMLINKLEN;
MNT_ILOCK(mp);
mp->mnt_flag |= MNT_LOCAL;
MNT_IUNLOCK(mp);
ump->um_mountp = mp;
ump->um_dev = dev;
ump->um_devvp = devvp;
ump->um_bo = &devvp->v_bufobj;
ump->um_cp = cp;
/*
* Setting those two parameters allowed us to use
* ufs_bmap w/o changse!
*/
ump->um_nindir = EXT2_ADDR_PER_BLOCK(fs);
ump->um_bptrtodb = fs->e2fs->e2fs_log_bsize + 1;
ump->um_seqinc = EXT2_FRAGS_PER_BLOCK(fs);
if (ronly == 0)
ext2_sbupdate(ump, MNT_WAIT);
/*
* Initialize filesystem stat information in mount struct.
*/
MNT_ILOCK(mp);
mp->mnt_kern_flag |= MNTK_MPSAFE | MNTK_LOOKUP_SHARED |
MNTK_EXTENDED_SHARED;
MNT_IUNLOCK(mp);
return (0);
out:
if (bp)
brelse(bp);
if (cp != NULL) {
DROP_GIANT();
g_topology_lock();
g_vfs_close(cp);
g_topology_unlock();
PICKUP_GIANT();
}
if (ump) {
mtx_destroy(EXT2_MTX(ump));
free(ump->um_e2fs->e2fs_gd, M_EXT2MNT);
free(ump->um_e2fs->e2fs_contigdirs, M_EXT2MNT);
free(ump->um_e2fs->e2fs, M_EXT2MNT);
free(ump->um_e2fs, M_EXT2MNT);
free(ump, M_EXT2MNT);
mp->mnt_data = NULL;
}
return (error);
}
/*-
* This start routine is only called for non-trivial requests, all the
* trivial ones are handled autonomously by the slice code.
* For requests we handle here, we must call the g_io_deliver() on the
* bio, and return non-zero to indicate to the slice code that we did so.
* This code executes in the "DOWN" I/O path, this means:
* * No sleeping.
* * Don't grab the topology lock.
* * Don't call biowait, g_getattr(), g_setattr() or g_read_data()
*/
static int
g_bsd_ioctl(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td)
{
struct g_geom *gp;
struct g_bsd_softc *ms;
struct g_slicer *gsp;
u_char *label;
int error;
gp = pp->geom;
gsp = gp->softc;
ms = gsp->softc;
switch(cmd) {
case DIOCGDINFO:
/* Return a copy of the disklabel to userland. */
bsd_disklabel_le_dec(ms->label, data, MAXPARTITIONS);
return(0);
case DIOCBSDBB: {
struct g_consumer *cp;
u_char *buf;
void *p;
int error, i;
uint64_t sum;
if (!(fflag & FWRITE))
return (EPERM);
/* The disklabel to set is the ioctl argument. */
buf = g_malloc(BBSIZE, M_WAITOK);
p = *(void **)data;
error = copyin(p, buf, BBSIZE);
if (!error) {
/* XXX: Rude, but supposedly safe */
DROP_GIANT();
g_topology_lock();
/* Validate and modify our slice instance to match. */
error = g_bsd_modify(gp, buf + ms->labeloffset);
if (!error) {
cp = LIST_FIRST(&gp->consumer);
if (ms->labeloffset == ALPHA_LABEL_OFFSET) {
sum = 0;
for (i = 0; i < 63; i++)
sum += le64dec(buf + i * 8);
le64enc(buf + 504, sum);
}
error = g_write_data(cp, 0, buf, BBSIZE);
}
g_topology_unlock();
PICKUP_GIANT();
}
g_free(buf);
return (error);
}
case DIOCSDINFO:
case DIOCWDINFO: {
if (!(fflag & FWRITE))
return (EPERM);
label = g_malloc(LABELSIZE, M_WAITOK);
/* The disklabel to set is the ioctl argument. */
bsd_disklabel_le_enc(label, data);
DROP_GIANT();
g_topology_lock();
/* Validate and modify our slice instance to match. */
error = g_bsd_modify(gp, label);
if (error == 0 && cmd == DIOCWDINFO)
error = g_bsd_writelabel(gp, NULL);
g_topology_unlock();
PICKUP_GIANT();
g_free(label);
return(error);
}
default:
return (ENOIOCTL);
}
}
static struct g_geom *
g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
{
int error;
uint32_t i, total_offsets, offsets_read, blk;
void *buf;
struct cloop_header *header;
struct g_consumer *cp;
struct g_geom *gp;
struct g_provider *pp2;
struct g_uzip_softc *sc;
enum {
GEOM_UZIP = 1,
GEOM_ULZMA
} type;
g_trace(G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name);
g_topology_assert();
/* Skip providers that are already open for writing. */
if (pp->acw > 0)
return (NULL);
buf = NULL;
/*
* Create geom instance.
*/
gp = g_new_geomf(mp, "%s.uzip", pp->name);
cp = g_new_consumer(gp);
error = g_attach(cp, pp);
if (error == 0)
error = g_access(cp, 1, 0, 0);
if (error) {
goto e1;
}
g_topology_unlock();
/*
* Read cloop header, look for CLOOP magic, perform
* other validity checks.
*/
DPRINTF(GUZ_DBG_INFO, ("%s: media sectorsize %u, mediasize %jd\n",
gp->name, pp->sectorsize, (intmax_t)pp->mediasize));
buf = g_read_data(cp, 0, pp->sectorsize, NULL);
if (buf == NULL)
goto e2;
header = (struct cloop_header *) buf;
if (strncmp(header->magic, CLOOP_MAGIC_START,
sizeof(CLOOP_MAGIC_START) - 1) != 0) {
DPRINTF(GUZ_DBG_ERR, ("%s: no CLOOP magic\n", gp->name));
goto e3;
}
switch (header->magic[CLOOP_OFS_COMPR]) {
case CLOOP_COMP_LZMA:
case CLOOP_COMP_LZMA_DDP:
type = GEOM_ULZMA;
if (header->magic[CLOOP_OFS_VERSN] < CLOOP_MINVER_LZMA) {
DPRINTF(GUZ_DBG_ERR, ("%s: image version too old\n",
gp->name));
goto e3;
}
DPRINTF(GUZ_DBG_INFO, ("%s: GEOM_UZIP_LZMA image found\n",
gp->name));
break;
case CLOOP_COMP_LIBZ:
case CLOOP_COMP_LIBZ_DDP:
type = GEOM_UZIP;
if (header->magic[CLOOP_OFS_VERSN] < CLOOP_MINVER_ZLIB) {
DPRINTF(GUZ_DBG_ERR, ("%s: image version too old\n",
gp->name));
goto e3;
}
DPRINTF(GUZ_DBG_INFO, ("%s: GEOM_UZIP_ZLIB image found\n",
gp->name));
break;
default:
DPRINTF(GUZ_DBG_ERR, ("%s: unsupported image type\n",
gp->name));
goto e3;
}
/*
* Initialize softc and read offsets.
*/
sc = malloc(sizeof(*sc), M_GEOM_UZIP, M_WAITOK | M_ZERO);
gp->softc = sc;
sc->blksz = ntohl(header->blksz);
sc->nblocks = ntohl(header->nblocks);
if (sc->blksz % 512 != 0) {
printf("%s: block size (%u) should be multiple of 512.\n",
gp->name, sc->blksz);
goto e4;
}
if (sc->blksz > MAX_BLKSZ) {
printf("%s: block size (%u) should not be larger than %d.\n",
gp->name, sc->blksz, MAX_BLKSZ);
}
total_offsets = sc->nblocks + 1;
if (sizeof(struct cloop_header) +
total_offsets * sizeof(uint64_t) > pp->mediasize) {
printf("%s: media too small for %u blocks\n",
gp->name, sc->nblocks);
goto e4;
}
sc->toc = malloc(total_offsets * sizeof(struct g_uzip_blk),
M_GEOM_UZIP, M_WAITOK | M_ZERO);
offsets_read = MIN(total_offsets,
(pp->sectorsize - sizeof(*header)) / sizeof(uint64_t));
for (i = 0; i < offsets_read; i++) {
sc->toc[i].offset = be64toh(((uint64_t *) (header + 1))[i]);
sc->toc[i].blen = BLEN_UNDEF;
}
DPRINTF(GUZ_DBG_INFO, ("%s: %u offsets in the first sector\n",
gp->name, offsets_read));
for (blk = 1; offsets_read < total_offsets; blk++) {
uint32_t nread;
free(buf, M_GEOM);
buf = g_read_data(
cp, blk * pp->sectorsize, pp->sectorsize, NULL);
if (buf == NULL)
goto e5;
nread = MIN(total_offsets - offsets_read,
pp->sectorsize / sizeof(uint64_t));
DPRINTF(GUZ_DBG_TOC, ("%s: %u offsets read from sector %d\n",
gp->name, nread, blk));
for (i = 0; i < nread; i++) {
sc->toc[offsets_read + i].offset =
be64toh(((uint64_t *) buf)[i]);
sc->toc[offsets_read + i].blen = BLEN_UNDEF;
}
offsets_read += nread;
}
free(buf, M_GEOM);
buf = NULL;
offsets_read -= 1;
DPRINTF(GUZ_DBG_INFO, ("%s: done reading %u block offsets from %u "
"sectors\n", gp->name, offsets_read, blk));
if (sc->nblocks != offsets_read) {
DPRINTF(GUZ_DBG_ERR, ("%s: read %s offsets than expected "
"blocks\n", gp->name,
sc->nblocks < offsets_read ? "more" : "less"));
goto e5;
}
/*
* "Fake" last+1 block, to make it easier for the TOC parser to
* iterate without making the last element a special case.
*/
sc->toc[sc->nblocks].offset = pp->mediasize;
/* Massage TOC (table of contents), make sure it is sound */
if (g_uzip_parse_toc(sc, pp, gp) != 0) {
DPRINTF(GUZ_DBG_ERR, ("%s: TOC error\n", gp->name));
goto e5;
}
mtx_init(&sc->last_mtx, "geom_uzip cache", NULL, MTX_DEF);
mtx_init(&sc->queue_mtx, "geom_uzip wrkthread", NULL, MTX_DEF);
bioq_init(&sc->bio_queue);
sc->last_blk = -1;
sc->last_buf = malloc(sc->blksz, M_GEOM_UZIP, M_WAITOK);
sc->req_total = 0;
sc->req_cached = 0;
if (type == GEOM_UZIP) {
sc->dcp = g_uzip_zlib_ctor(sc->blksz);
} else {
sc->dcp = g_uzip_lzma_ctor(sc->blksz);
}
if (sc->dcp == NULL) {
goto e6;
}
sc->uzip_do = &g_uzip_do;
error = kproc_create(g_uzip_wrkthr, sc, &sc->procp, 0, 0, "%s",
gp->name);
if (error != 0) {
goto e7;
}
g_topology_lock();
pp2 = g_new_providerf(gp, "%s", gp->name);
pp2->sectorsize = 512;
pp2->mediasize = (off_t)sc->nblocks * sc->blksz;
pp2->stripesize = pp->stripesize;
pp2->stripeoffset = pp->stripeoffset;
g_error_provider(pp2, 0);
g_access(cp, -1, 0, 0);
DPRINTF(GUZ_DBG_INFO, ("%s: taste ok (%d, %jd), (%d, %d), %x\n",
gp->name, pp2->sectorsize, (intmax_t)pp2->mediasize,
pp2->stripeoffset, pp2->stripesize, pp2->flags));
DPRINTF(GUZ_DBG_INFO, ("%s: %u x %u blocks\n", gp->name, sc->nblocks,
sc->blksz));
return (gp);
e7:
sc->dcp->free(sc->dcp);
e6:
free(sc->last_buf, M_GEOM);
mtx_destroy(&sc->queue_mtx);
mtx_destroy(&sc->last_mtx);
e5:
free(sc->toc, M_GEOM);
e4:
free(gp->softc, M_GEOM_UZIP);
e3:
if (buf != NULL) {
free(buf, M_GEOM);
}
e2:
g_topology_lock();
g_access(cp, -1, 0, 0);
e1:
g_detach(cp);
g_destroy_consumer(cp);
g_destroy_geom(gp);
return (NULL);
}
static struct g_geom *
g_aes_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
{
struct g_geom *gp;
struct g_consumer *cp;
struct g_aes_softc *sc;
int error;
u_int sectorsize;
off_t mediasize;
u_char *buf;
g_trace(G_T_TOPOLOGY, "aes_taste(%s,%s)", mp->name, pp->name);
g_topology_assert();
gp = g_new_geomf(mp, "%s.aes", pp->name);
cp = g_new_consumer(gp);
g_attach(cp, pp);
error = g_access(cp, 1, 0, 0);
if (error) {
g_detach(cp);
g_destroy_consumer(cp);
g_destroy_geom(gp);
return (NULL);
}
buf = NULL;
g_topology_unlock();
do {
if (gp->rank != 2)
break;
sectorsize = cp->provider->sectorsize;
mediasize = cp->provider->mediasize;
buf = g_read_data(cp, 0, sectorsize, NULL);
if (buf == NULL) {
break;
}
sc = g_malloc(sizeof(struct g_aes_softc), M_WAITOK | M_ZERO);
if (!memcmp(buf, aes_magic, strlen(aes_magic))) {
sc->keying = KEY_ZERO;
} else if (!memcmp(buf, aes_magic_random,
strlen(aes_magic_random))) {
sc->keying = KEY_RANDOM;
} else if (!memcmp(buf, aes_magic_test,
strlen(aes_magic_test))) {
sc->keying = KEY_TEST;
} else {
g_free(sc);
break;
}
g_free(buf);
gp->softc = sc;
sc->sectorsize = sectorsize;
sc->mediasize = mediasize - sectorsize;
rijndael_cipherInit(&sc->ci, MODE_CBC, NULL);
if (sc->keying == KEY_TEST) {
int i;
u_char *p;
p = sc->master_key;
for (i = 0; i < (int)sizeof sc->master_key; i ++)
*p++ = i;
}
if (sc->keying == KEY_RANDOM) {
int i;
u_int32_t u;
u_char *p;
p = sc->master_key;
for (i = 0; i < (int)sizeof sc->master_key; i += sizeof u) {
u = arc4random();
*p++ = u;
*p++ = u >> 8;
*p++ = u >> 16;
*p++ = u >> 24;
}
}
g_topology_lock();
pp = g_new_providerf(gp, "%s", gp->name);
pp->mediasize = mediasize - sectorsize;
pp->sectorsize = sectorsize;
g_error_provider(pp, 0);
g_topology_unlock();
} while(0);
/*
* Common code for mount and mountroot
*/
static int
reiserfs_mountfs(struct vnode *devvp, struct mount *mp, struct thread *td)
{
int error, old_format = 0;
struct reiserfs_mount *rmp;
struct reiserfs_sb_info *sbi;
struct reiserfs_super_block *rs;
struct cdev *dev;
struct g_consumer *cp;
struct bufobj *bo;
//ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
dev = devvp->v_rdev;
dev_ref(dev);
DROP_GIANT();
g_topology_lock();
error = g_vfs_open(devvp, &cp, "reiserfs", /* read-only */ 0);
g_topology_unlock();
PICKUP_GIANT();
VOP_UNLOCK(devvp, 0);
if (error) {
dev_rel(dev);
return (error);
}
bo = &devvp->v_bufobj;
bo->bo_private = cp;
bo->bo_ops = g_vfs_bufops;
if (devvp->v_rdev->si_iosize_max != 0)
mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max;
if (mp->mnt_iosize_max > MAXPHYS)
mp->mnt_iosize_max = MAXPHYS;
rmp = NULL;
sbi = NULL;
/* rmp contains any information about this specific mount */
rmp = malloc(sizeof *rmp, M_REISERFSMNT, M_WAITOK | M_ZERO);
if (!rmp) {
error = (ENOMEM);
goto out;
}
sbi = malloc(sizeof *sbi, M_REISERFSMNT, M_WAITOK | M_ZERO);
if (!sbi) {
error = (ENOMEM);
goto out;
}
rmp->rm_reiserfs = sbi;
rmp->rm_mountp = mp;
rmp->rm_devvp = devvp;
rmp->rm_dev = dev;
rmp->rm_bo = &devvp->v_bufobj;
rmp->rm_cp = cp;
/* Set default values for options: non-aggressive tails */
REISERFS_SB(sbi)->s_mount_opt = (1 << REISERFS_SMALLTAIL);
REISERFS_SB(sbi)->s_rd_only = 1;
REISERFS_SB(sbi)->s_devvp = devvp;
/* Read the super block */
if ((error = read_super_block(rmp, REISERFS_OLD_DISK_OFFSET)) == 0) {
/* The read process succeeded, it's an old format */
old_format = 1;
} else if ((error = read_super_block(rmp, REISERFS_DISK_OFFSET)) != 0) {
reiserfs_log(LOG_ERR, "can not find a ReiserFS filesystem\n");
goto out;
}
rs = SB_DISK_SUPER_BLOCK(sbi);
/*
* Let's do basic sanity check to verify that underlying device is
* not smaller than the filesystem. If the check fails then abort and
* scream, because bad stuff will happen otherwise.
*/
#if 0
if (s->s_bdev && s->s_bdev->bd_inode &&
i_size_read(s->s_bdev->bd_inode) <
sb_block_count(rs) * sb_blocksize(rs)) {
reiserfs_log(LOG_ERR,
"reiserfs: filesystem cannot be mounted because it is "
"bigger than the device.\n");
reiserfs_log(LOG_ERR, "reiserfs: you may need to run fsck "
"rr may be you forgot to reboot after fdisk when it "
"told you to.\n");
goto out;
}
#endif
/*
* XXX This is from the original Linux code, but why affecting 2 values
* to the same variable?
*/
sbi->s_mount_state = SB_REISERFS_STATE(sbi);
sbi->s_mount_state = REISERFS_VALID_FS;
if ((error = (old_format ?
read_old_bitmaps(rmp) : read_bitmaps(rmp)))) {
reiserfs_log(LOG_ERR, "unable to read bitmap\n");
goto out;
}
/* Make data=ordered the default */
if (!reiserfs_data_log(sbi) && !reiserfs_data_ordered(sbi) &&
!reiserfs_data_writeback(sbi)) {
REISERFS_SB(sbi)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED);
}
if (reiserfs_data_log(sbi)) {
reiserfs_log(LOG_INFO, "using journaled data mode\n");
} else if (reiserfs_data_ordered(sbi)) {
reiserfs_log(LOG_INFO, "using ordered data mode\n");
} else {
reiserfs_log(LOG_INFO, "using writeback data mode\n");
}
/* TODO Not yet supported */
#if 0
if(journal_init(sbi, jdev_name, old_format, commit_max_age)) {
reiserfs_log(LOG_ERR, "unable to initialize journal space\n");
goto out;
} else {
jinit_done = 1 ; /* once this is set, journal_release must
be called if we error out of the mount */
}
if (reread_meta_blocks(sbi)) {
reiserfs_log(LOG_ERR,
"unable to reread meta blocks after journal init\n");
goto out;
}
#endif
/* Define and initialize hash function */
sbi->s_hash_function = hash_function(rmp);
if (sbi->s_hash_function == NULL) {
reiserfs_log(LOG_ERR, "couldn't determined hash function\n");
error = (EINVAL);
goto out;
}
if (is_reiserfs_3_5(rs) ||
(is_reiserfs_jr(rs) && SB_VERSION(sbi) == REISERFS_VERSION_1))
bit_set(&(sbi->s_properties), REISERFS_3_5);
else
bit_set(&(sbi->s_properties), REISERFS_3_6);
mp->mnt_data = rmp;
mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
MNT_ILOCK(mp);
mp->mnt_flag |= MNT_LOCAL;
mp->mnt_kern_flag |= MNTK_MPSAFE;
MNT_IUNLOCK(mp);
#if defined(si_mountpoint)
devvp->v_rdev->si_mountpoint = mp;
#endif
return (0);
out:
reiserfs_log(LOG_INFO, "*** error during mount ***\n");
if (sbi) {
if (SB_AP_BITMAP(sbi)) {
int i;
for (i = 0; i < SB_BMAP_NR(sbi); i++) {
if (!SB_AP_BITMAP(sbi)[i].bp_data)
break;
free(SB_AP_BITMAP(sbi)[i].bp_data,
M_REISERFSMNT);
}
free(SB_AP_BITMAP(sbi), M_REISERFSMNT);
}
if (sbi->s_rs) {
free(sbi->s_rs, M_REISERFSMNT);
sbi->s_rs = NULL;
}
}
if (cp != NULL) {
DROP_GIANT();
g_topology_lock();
g_vfs_close(cp);
g_topology_unlock();
PICKUP_GIANT();
}
if (sbi)
free(sbi, M_REISERFSMNT);
if (rmp)
free(rmp, M_REISERFSMNT);
dev_rel(dev);
return (error);
}
/*
* Unmount system call
*/
static int
reiserfs_unmount(struct mount *mp, int mntflags)
{
int error, flags = 0;
struct reiserfs_mount *rmp;
struct reiserfs_sb_info *sbi;
reiserfs_log(LOG_DEBUG, "get private data\n");
rmp = VFSTOREISERFS(mp);
sbi = rmp->rm_reiserfs;
/* Flangs handling */
reiserfs_log(LOG_DEBUG, "handle mntflags\n");
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
/* Flush files -> vflush */
reiserfs_log(LOG_DEBUG, "flush vnodes\n");
if ((error = vflush(mp, 0, flags, curthread)))
return (error);
/* XXX Super block update */
if (sbi) {
if (SB_AP_BITMAP(sbi)) {
int i;
reiserfs_log(LOG_DEBUG,
"release bitmap buffers (total: %d)\n",
SB_BMAP_NR(sbi));
for (i = 0; i < SB_BMAP_NR(sbi); i++) {
if (SB_AP_BITMAP(sbi)[i].bp_data) {
free(SB_AP_BITMAP(sbi)[i].bp_data,
M_REISERFSMNT);
SB_AP_BITMAP(sbi)[i].bp_data = NULL;
}
}
reiserfs_log(LOG_DEBUG, "free bitmaps structure\n");
free(SB_AP_BITMAP(sbi), M_REISERFSMNT);
SB_AP_BITMAP(sbi) = NULL;
}
if (sbi->s_rs) {
reiserfs_log(LOG_DEBUG, "free super block data\n");
free(sbi->s_rs, M_REISERFSMNT);
sbi->s_rs = NULL;
}
}
reiserfs_log(LOG_DEBUG, "close device\n");
#if defined(si_mountpoint)
rmp->rm_devvp->v_rdev->si_mountpoint = NULL;
#endif
DROP_GIANT();
g_topology_lock();
g_vfs_close(rmp->rm_cp);
g_topology_unlock();
PICKUP_GIANT();
vrele(rmp->rm_devvp);
dev_rel(rmp->rm_dev);
if (sbi) {
reiserfs_log(LOG_DEBUG, "free sbi\n");
free(sbi, M_REISERFSMNT);
sbi = rmp->rm_reiserfs = NULL;
}
if (rmp) {
reiserfs_log(LOG_DEBUG, "free rmp\n");
free(rmp, M_REISERFSMNT);
rmp = NULL;
}
mp->mnt_data = 0;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_LOCAL;
MNT_IUNLOCK(mp);
reiserfs_log(LOG_DEBUG, "done\n");
return (error);
}
static int
_xfs_mount(struct mount *mp)
{
struct xfsmount *xmp;
struct xfs_vnode *rootvp;
struct ucred *curcred;
struct vnode *rvp, *devvp;
struct cdev *ddev;
struct g_consumer *cp;
struct thread *td;
int error;
td = curthread;
ddev = NULL;
cp = NULL;
if (vfs_filteropt(mp->mnt_optnew, xfs_opts))
return (EINVAL);
if (mp->mnt_flag & MNT_UPDATE)
return (0);
if ((mp->mnt_flag & MNT_RDONLY) == 0)
return (EPERM);
xmp = xfsmount_allocate(mp);
if (xmp == NULL)
return (ENOMEM);
if((error = _xfs_param_copyin(mp, td)) != 0)
goto fail;
curcred = td->td_ucred;
XVFS_MOUNT(XFSTOVFS(xmp), &xmp->m_args, curcred, error);
if (error)
goto fail;
XVFS_ROOT(XFSTOVFS(xmp), &rootvp, error);
ddev = XFS_VFSTOM(XFSTOVFS(xmp))->m_ddev_targp->dev;
devvp = XFS_VFSTOM(XFSTOVFS(xmp))->m_ddev_targp->specvp;
if (error)
goto fail_unmount;
if (ddev->si_iosize_max != 0)
mp->mnt_iosize_max = ddev->si_iosize_max;
if (mp->mnt_iosize_max > MAXPHYS)
mp->mnt_iosize_max = MAXPHYS;
mp->mnt_flag |= MNT_LOCAL;
mp->mnt_stat.f_fsid.val[0] = dev2udev(ddev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
if ((error = VFS_STATFS(mp, &mp->mnt_stat)) != 0)
goto fail_unmount;
rvp = rootvp->v_vnode;
rvp->v_vflag |= VV_ROOT;
VN_RELE(rootvp);
return (0);
fail_unmount:
XVFS_UNMOUNT(XFSTOVFS(xmp), 0, curcred, error);
if (devvp != NULL) {
cp = devvp->v_bufobj.bo_private;
if (cp != NULL) {
DROP_GIANT();
g_topology_lock();
g_vfs_close(cp);
g_topology_unlock();
PICKUP_GIANT();
}
}
fail:
if (xmp != NULL)
xfsmount_deallocate(xmp);
return (error);
}
/*
* VFS Operations.
*
* mount system call
*/
static int
ext2_mount(struct mount *mp)
{
struct vfsoptlist *opts;
struct vnode *devvp;
struct thread *td;
struct ext2mount *ump = NULL;
struct m_ext2fs *fs;
struct nameidata nd, *ndp = &nd;
accmode_t accmode;
char *path, *fspec;
int error, flags, len;
td = curthread;
opts = mp->mnt_optnew;
if (vfs_filteropt(opts, ext2_opts))
return (EINVAL);
vfs_getopt(opts, "fspath", (void **)&path, NULL);
/* Double-check the length of path.. */
if (strlen(path) >= MAXMNTLEN - 1)
return (ENAMETOOLONG);
fspec = NULL;
error = vfs_getopt(opts, "from", (void **)&fspec, &len);
if (!error && fspec[len - 1] != '\0')
return (EINVAL);
/*
* 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) {
ump = VFSTOEXT2(mp);
fs = ump->um_e2fs;
error = 0;
if (fs->e2fs_ronly == 0 &&
vfs_flagopt(opts, "ro", NULL, 0)) {
error = VFS_SYNC(mp, MNT_WAIT);
if (error)
return (error);
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
error = ext2_flushfiles(mp, flags, td);
if ( error == 0 && fs->e2fs_wasvalid && ext2_cgupdate(ump, MNT_WAIT) == 0) {
fs->e2fs->e2fs_state |= E2FS_ISCLEAN;
ext2_sbupdate(ump, MNT_WAIT);
}
fs->e2fs_ronly = 1;
vfs_flagopt(opts, "ro", &mp->mnt_flag, MNT_RDONLY);
DROP_GIANT();
g_topology_lock();
g_access(ump->um_cp, 0, -1, 0);
g_topology_unlock();
PICKUP_GIANT();
}
if (!error && (mp->mnt_flag & MNT_RELOAD))
error = ext2_reload(mp, td);
if (error)
return (error);
devvp = ump->um_devvp;
if (fs->e2fs_ronly && !vfs_flagopt(opts, "ro", NULL, 0)) {
if (ext2_check_sb_compat(fs->e2fs, devvp->v_rdev, 0))
return (EPERM);
/*
* If upgrade to read-write by non-root, then verify
* that user has necessary permissions on the device.
*/
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_ACCESS(devvp, VREAD | VWRITE,
td->td_ucred, td);
if (error)
error = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (error) {
VOP_UNLOCK(devvp, 0);
return (error);
}
VOP_UNLOCK(devvp, 0);
DROP_GIANT();
g_topology_lock();
error = g_access(ump->um_cp, 0, 1, 0);
g_topology_unlock();
PICKUP_GIANT();
if (error)
return (error);
if ((fs->e2fs->e2fs_state & E2FS_ISCLEAN) == 0 ||
(fs->e2fs->e2fs_state & E2FS_ERRORS)) {
if (mp->mnt_flag & MNT_FORCE) {
printf(
"WARNING: %s was not properly dismounted\n", fs->e2fs_fsmnt);
} else {
printf(
"WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck\n",
fs->e2fs_fsmnt);
return (EPERM);
}
}
fs->e2fs->e2fs_state &= ~E2FS_ISCLEAN;
(void)ext2_cgupdate(ump, MNT_WAIT);
fs->e2fs_ronly = 0;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_RDONLY;
MNT_IUNLOCK(mp);
}
if (vfs_flagopt(opts, "export", NULL, 0)) {
/* Process export requests in vfs_mount.c. */
return (error);
}
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible disk device.
*/
if (fspec == NULL)
return (EINVAL);
NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec, td);
if ((error = namei(ndp)) != 0)
return (error);
NDFREE(ndp, NDF_ONLY_PNBUF);
devvp = ndp->ni_vp;
if (!vn_isdisk(devvp, &error)) {
vput(devvp);
return (error);
}
/*
* If mount by non-root, then verify that user has necessary
* permissions on the device.
*
* XXXRW: VOP_ACCESS() enough?
*/
accmode = VREAD;
if ((mp->mnt_flag & MNT_RDONLY) == 0)
accmode |= VWRITE;
error = VOP_ACCESS(devvp, accmode, td->td_ucred, td);
if (error)
error = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (error) {
vput(devvp);
return (error);
}
if ((mp->mnt_flag & MNT_UPDATE) == 0) {
error = ext2_mountfs(devvp, mp);
} else {
if (devvp != ump->um_devvp) {
vput(devvp);
return (EINVAL); /* needs translation */
} else
vput(devvp);
}
if (error) {
vrele(devvp);
return (error);
}
ump = VFSTOEXT2(mp);
fs = ump->um_e2fs;
/*
* Note that this strncpy() is ok because of a check at the start
* of ext2_mount().
*/
strncpy(fs->e2fs_fsmnt, path, MAXMNTLEN);
fs->e2fs_fsmnt[MAXMNTLEN - 1] = '\0';
vfs_mountedfrom(mp, fspec);
return (0);
}
static struct g_geom *
g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
{
int error;
uint32_t i, total_offsets, offsets_read, blk;
void *buf;
struct cloop_header *header;
struct g_consumer *cp;
struct g_geom *gp;
struct g_provider *pp2;
struct g_uzip_softc *sc;
g_trace(G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name);
g_topology_assert();
/* Skip providers that are already open for writing. */
if (pp->acw > 0)
return (NULL);
buf = NULL;
/*
* Create geom instance.
*/
gp = g_new_geomf(mp, "%s.uzip", pp->name);
cp = g_new_consumer(gp);
error = g_attach(cp, pp);
if (error == 0)
error = g_access(cp, 1, 0, 0);
if (error) {
g_detach(cp);
g_destroy_consumer(cp);
g_destroy_geom(gp);
return (NULL);
}
g_topology_unlock();
/*
* Read cloop header, look for CLOOP magic, perform
* other validity checks.
*/
DPRINTF(("%s: media sectorsize %u, mediasize %jd\n",
gp->name, pp->sectorsize, (intmax_t)pp->mediasize));
buf = g_read_data(cp, 0, pp->sectorsize, NULL);
if (buf == NULL)
goto err;
header = (struct cloop_header *) buf;
if (strncmp(header->magic, CLOOP_MAGIC_START,
sizeof(CLOOP_MAGIC_START) - 1) != 0) {
DPRINTF(("%s: no CLOOP magic\n", gp->name));
goto err;
}
if (header->magic[0x0b] != 'V' || header->magic[0x0c] < '2') {
DPRINTF(("%s: image version too old\n", gp->name));
goto err;
}
/*
* Initialize softc and read offsets.
*/
sc = malloc(sizeof(*sc), M_GEOM_UZIP, M_WAITOK | M_ZERO);
gp->softc = sc;
sc->blksz = ntohl(header->blksz);
sc->nblocks = ntohl(header->nblocks);
if (sc->blksz % 512 != 0) {
printf("%s: block size (%u) should be multiple of 512.\n",
gp->name, sc->blksz);
goto err;
}
if (sc->blksz > MAX_BLKSZ) {
printf("%s: block size (%u) should not be larger than %d.\n",
gp->name, sc->blksz, MAX_BLKSZ);
}
total_offsets = sc->nblocks + 1;
if (sizeof(struct cloop_header) +
total_offsets * sizeof(uint64_t) > pp->mediasize) {
printf("%s: media too small for %u blocks\n",
gp->name, sc->nblocks);
goto err;
}
sc->offsets = malloc(
total_offsets * sizeof(uint64_t), M_GEOM_UZIP, M_WAITOK);
offsets_read = MIN(total_offsets,
(pp->sectorsize - sizeof(*header)) / sizeof(uint64_t));
for (i = 0; i < offsets_read; i++)
sc->offsets[i] = be64toh(((uint64_t *) (header + 1))[i]);
DPRINTF(("%s: %u offsets in the first sector\n",
gp->name, offsets_read));
for (blk = 1; offsets_read < total_offsets; blk++) {
uint32_t nread;
free(buf, M_GEOM);
buf = g_read_data(
cp, blk * pp->sectorsize, pp->sectorsize, NULL);
if (buf == NULL)
goto err;
nread = MIN(total_offsets - offsets_read,
pp->sectorsize / sizeof(uint64_t));
DPRINTF(("%s: %u offsets read from sector %d\n",
gp->name, nread, blk));
for (i = 0; i < nread; i++) {
sc->offsets[offsets_read + i] =
be64toh(((uint64_t *) buf)[i]);
}
offsets_read += nread;
}
free(buf, M_GEOM);
DPRINTF(("%s: done reading offsets\n", gp->name));
mtx_init(&sc->last_mtx, "geom_uzip cache", NULL, MTX_DEF);
sc->last_blk = -1;
sc->last_buf = malloc(sc->blksz, M_GEOM_UZIP, M_WAITOK);
sc->req_total = 0;
sc->req_cached = 0;
g_topology_lock();
pp2 = g_new_providerf(gp, "%s", gp->name);
pp2->sectorsize = 512;
pp2->mediasize = (off_t)sc->nblocks * sc->blksz;
pp2->stripesize = pp->stripesize;
pp2->stripeoffset = pp->stripeoffset;
g_error_provider(pp2, 0);
g_access(cp, -1, 0, 0);
DPRINTF(("%s: taste ok (%d, %jd), (%d, %d), %x\n",
gp->name,
pp2->sectorsize, (intmax_t)pp2->mediasize,
pp2->stripeoffset, pp2->stripesize, pp2->flags));
printf("%s: %u x %u blocks\n", gp->name, sc->nblocks, sc->blksz);
return (gp);
err:
g_topology_lock();
g_access(cp, -1, 0, 0);
if (buf != NULL)
free(buf, M_GEOM);
if (gp->softc != NULL) {
g_uzip_softc_free(gp->softc, NULL);
gp->softc = NULL;
}
g_detach(cp);
g_destroy_consumer(cp);
g_destroy_geom(gp);
return (NULL);
}
