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minix/sbin/newfs_udf/udf_write.c
Jean-Baptiste Boric 9f988b7934 Import makefs from NetBSD 
Change-Id: I0ebcc9d0168df9d26cfb0af0fce2bc894ce688af
2015-10-07 12:39:44 +02:00

906 lines
24 KiB
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/* $NetBSD: udf_write.c,v 1.8 2013/08/25 14:13:47 reinoud Exp $ */
/*
* Copyright (c) 2006, 2008, 2013 Reinoud Zandijk
* 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 ``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.
*
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
__RCSID("$NetBSD: udf_write.c,v 1.8 2013/08/25 14:13:47 reinoud Exp $");
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <assert.h>
#include <err.h>
#include <sys/types.h>
#include <sys/param.h>
#if !HAVE_NBTOOL_CONFIG_H
#define _EXPOSE_MMC
#include <sys/cdio.h>
#else
#include "udf/cdio_mmc_structs.h"
#endif
#include "udf_create.h"
#include "udf_write.h"
#include "newfs_udf.h"
union dscrptr *terminator_dscr;
static int
udf_write_phys(void *blob, uint32_t location, uint32_t sects)
{
uint32_t phys, cnt;
uint8_t *bpos;
int error;
for (cnt = 0; cnt < sects; cnt++) {
bpos = (uint8_t *) blob;
bpos += context.sector_size * cnt;
phys = location + cnt;
error = udf_write_sector(bpos, phys);
if (error)
return error;
}
return 0;
}
static int
udf_write_dscr_phys(union dscrptr *dscr, uint32_t location,
uint32_t sects)
{
dscr->tag.tag_loc = udf_rw32(location);
(void) udf_validate_tag_and_crc_sums(dscr);
return udf_write_phys(dscr, location, sects);
}
int
udf_write_dscr_virt(union dscrptr *dscr, uint32_t location, uint32_t vpart,
uint32_t sects)
{
struct file_entry *fe;
struct extfile_entry *efe;
struct extattrhdr_desc *extattrhdr;
uint32_t phys;
extattrhdr = NULL;
if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) {
fe = (struct file_entry *) dscr;
if (udf_rw32(fe->l_ea) > 0)
extattrhdr = (struct extattrhdr_desc *) fe->data;
}
if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) {
efe = (struct extfile_entry *) dscr;
if (udf_rw32(efe->l_ea) > 0)
extattrhdr = (struct extattrhdr_desc *) efe->data;
}
if (extattrhdr) {
extattrhdr->tag.tag_loc = udf_rw32(location);
udf_validate_tag_and_crc_sums((union dscrptr *) extattrhdr);
}
dscr->tag.tag_loc = udf_rw32(location);
udf_validate_tag_and_crc_sums(dscr);
/* determine physical location */
phys = context.vtop_offset[vpart];
if (context.vtop_tp[vpart] == UDF_VTOP_TYPE_VIRT) {
udf_vat_update(location, context.data_alloc_pos);
phys += context.data_alloc_pos++;
} else {
phys += location;
}
return udf_write_phys(dscr, phys, sects);
}
void
udf_metadata_alloc(int nblk, struct long_ad *pos)
{
memset(pos, 0, sizeof(*pos));
pos->len = udf_rw32(nblk * context.sector_size);
pos->loc.lb_num = udf_rw32(context.metadata_alloc_pos);
pos->loc.part_num = udf_rw16(context.metadata_part);
udf_mark_allocated(context.metadata_alloc_pos, context.metadata_part,
nblk);
context.metadata_alloc_pos += nblk;
if (context.metadata_part == context.data_part)
context.data_alloc_pos = context.metadata_alloc_pos;
}
void
udf_data_alloc(int nblk, struct long_ad *pos)
{
memset(pos, 0, sizeof(*pos));
pos->len = udf_rw32(nblk * context.sector_size);
pos->loc.lb_num = udf_rw32(context.data_alloc_pos);
pos->loc.part_num = udf_rw16(context.data_part);
udf_mark_allocated(context.data_alloc_pos, context.data_part, nblk);
context.data_alloc_pos += nblk;
if (context.metadata_part == context.data_part)
context.metadata_alloc_pos = context.data_alloc_pos;
}
/* --------------------------------------------------------------------- */
/*
* udf_derive_format derives the format_flags from the disc's mmc_discinfo.
* The resulting flags uniquely define a disc format. Note there are at least
* 7 distinct format types defined in UDF.
*/
#define UDF_VERSION(a) \
(((a) == 0x100) || ((a) == 0x102) || ((a) == 0x150) || ((a) == 0x200) || \
((a) == 0x201) || ((a) == 0x250) || ((a) == 0x260))
int
udf_derive_format(int req_enable, int req_disable, int force)
{
/* disc writability, formatted, appendable */
if ((mmc_discinfo.mmc_cur & MMC_CAP_RECORDABLE) == 0) {
(void)printf("Can't newfs readonly device\n");
return EROFS;
}
if (mmc_discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) {
/* sequentials need sessions appended */
if (mmc_discinfo.disc_state == MMC_STATE_CLOSED) {
(void)printf("Can't append session to a closed disc\n");
return EROFS;
}
if ((mmc_discinfo.disc_state != MMC_STATE_EMPTY) && !force) {
(void)printf("Disc not empty! Use -F to force "
"initialisation\n");
return EROFS;
}
} else {
/* check if disc (being) formatted or has been started on */
if (mmc_discinfo.disc_state == MMC_STATE_EMPTY) {
(void)printf("Disc is not formatted\n");
return EROFS;
}
}
/* determine UDF format */
format_flags = 0;
if (mmc_discinfo.mmc_cur & MMC_CAP_REWRITABLE) {
/* all rewritable media */
format_flags |= FORMAT_REWRITABLE;
if (context.min_udf >= 0x0250) {
/* standard dictates meta as default */
format_flags |= FORMAT_META;
}
if ((mmc_discinfo.mmc_cur & MMC_CAP_HW_DEFECTFREE) == 0) {
/* sparables for defect management */
if (context.min_udf >= 0x150)
format_flags |= FORMAT_SPARABLE;
}
} else {
/* all once recordable media */
format_flags |= FORMAT_WRITEONCE;
if (mmc_discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) {
format_flags |= FORMAT_SEQUENTIAL;
if (mmc_discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) {
/* logical overwritable */
format_flags |= FORMAT_LOW;
} else {
/* have to use VAT for overwriting */
format_flags |= FORMAT_VAT;
}
} else {
/* rare WORM devices, but BluRay has one, strat4096 */
format_flags |= FORMAT_WORM;
}
}
/* enable/disable requests */
if (req_disable & FORMAT_META) {
format_flags &= ~(FORMAT_META | FORMAT_LOW);
req_disable &= ~FORMAT_META;
}
if ((format_flags & FORMAT_VAT) & UDF_512_TRACK)
format_flags |= FORMAT_TRACK512;
if (req_enable & FORMAT_READONLY) {
format_flags |= FORMAT_READONLY;
}
/* determine partition/media access type */
media_accesstype = UDF_ACCESSTYPE_NOT_SPECIFIED;
if (mmc_discinfo.mmc_cur & MMC_CAP_REWRITABLE) {
media_accesstype = UDF_ACCESSTYPE_OVERWRITABLE;
if (mmc_discinfo.mmc_cur & MMC_CAP_ERASABLE)
media_accesstype = UDF_ACCESSTYPE_REWRITEABLE;
} else {
/* all once recordable media */
media_accesstype = UDF_ACCESSTYPE_WRITE_ONCE;
}
if (mmc_discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)
media_accesstype = UDF_ACCESSTYPE_PSEUDO_OVERWITE;
/* patch up media accesstype */
if (req_enable & FORMAT_READONLY) {
/* better now */
media_accesstype = UDF_ACCESSTYPE_READ_ONLY;
}
/* adjust minimum version limits */
if (format_flags & FORMAT_VAT)
context.min_udf = MAX(context.min_udf, 0x0150);
if (format_flags & FORMAT_SPARABLE)
context.min_udf = MAX(context.min_udf, 0x0150);
if (format_flags & FORMAT_META)
context.min_udf = MAX(context.min_udf, 0x0250);
if (format_flags & FORMAT_LOW)
context.min_udf = MAX(context.min_udf, 0x0260);
/* adjust maximum version limits not to tease or break things */
if (!(format_flags & (FORMAT_META | FORMAT_LOW)) &&
(context.max_udf > 0x200))
context.max_udf = 0x201;
if ((format_flags & (FORMAT_VAT | FORMAT_SPARABLE)) == 0)
if (context.max_udf <= 0x150)
context.min_udf = 0x102;
/* limit Ecma 167 descriptor if possible/needed */
context.dscrver = 3;
if ((context.min_udf < 0x200) || (context.max_udf < 0x200)) {
context.dscrver = 2;
context.max_udf = 0x150; /* last version < 0x200 */
}
/* is it possible ? */
if (context.min_udf > context.max_udf) {
(void)printf("Initialisation prohibited by specified maximum "
"UDF version 0x%04x. Minimum version required 0x%04x\n",
context.max_udf, context.min_udf);
return EPERM;
}
if (!UDF_VERSION(context.min_udf) || !UDF_VERSION(context.max_udf)) {
printf("Choose UDF version numbers from "
"0x102, 0x150, 0x200, 0x201, 0x250 and 0x260\n");
printf("Default version is 0x201\n");
return EPERM;
}
return 0;
}
#undef UDF_VERSION
/* --------------------------------------------------------------------- */
int
udf_proces_names(void)
{
uint32_t primary_nr;
uint64_t volset_nr;
if (context.logvol_name == NULL)
context.logvol_name = strdup("anonymous");
if (context.primary_name == NULL) {
if (mmc_discinfo.disc_flags & MMC_DFLAGS_DISCIDVALID) {
primary_nr = mmc_discinfo.disc_id;
} else {
primary_nr = (uint32_t) random();
}
context.primary_name = calloc(32, 1);
sprintf(context.primary_name, "%08"PRIx32, primary_nr);
}
if (context.volset_name == NULL) {
if (mmc_discinfo.disc_flags & MMC_DFLAGS_BARCODEVALID) {
volset_nr = mmc_discinfo.disc_barcode;
} else {
volset_nr = (uint32_t) random();
volset_nr |= ((uint64_t) random()) << 32;
}
context.volset_name = calloc(128,1);
sprintf(context.volset_name, "%016"PRIx64, volset_nr);
}
if (context.fileset_name == NULL)
context.fileset_name = strdup("anonymous");
/* check passed/created identifiers */
if (strlen(context.logvol_name) > 128) {
(void)printf("Logical volume name too long\n");
return EINVAL;
}
if (strlen(context.primary_name) > 32) {
(void)printf("Primary volume name too long\n");
return EINVAL;
}
if (strlen(context.volset_name) > 128) {
(void)printf("Volume set name too long\n");
return EINVAL;
}
if (strlen(context.fileset_name) > 32) {
(void)printf("Fileset name too long\n");
return EINVAL;
}
/* signal all OK */
return 0;
}
/* --------------------------------------------------------------------- */
static int
udf_write_iso9660_vrs(void)
{
struct vrs_desc *iso9660_vrs_desc;
uint32_t pos;
int error, cnt, dpos;
/* create ISO/Ecma-167 identification descriptors */
if ((iso9660_vrs_desc = calloc(1, context.sector_size)) == NULL)
return ENOMEM;
/*
* All UDF formats should have their ISO/Ecma-167 descriptors written
* except when not possible due to track reservation in the case of
* VAT
*/
if ((format_flags & FORMAT_TRACK512) == 0) {
dpos = (2048 + context.sector_size - 1) / context.sector_size;
/* wipe at least 6 times 2048 byte `sectors' */
for (cnt = 0; cnt < 6 *dpos; cnt++) {
pos = layout.iso9660_vrs + cnt;
if ((error = udf_write_sector(iso9660_vrs_desc, pos))) {
free(iso9660_vrs_desc);
return error;
}
}
/* common VRS fields in all written out ISO descriptors */
iso9660_vrs_desc->struct_type = 0;
iso9660_vrs_desc->version = 1;
pos = layout.iso9660_vrs;
/* BEA01, NSR[23], TEA01 */
memcpy(iso9660_vrs_desc->identifier, "BEA01", 5);
if ((error = udf_write_sector(iso9660_vrs_desc, pos))) {
free(iso9660_vrs_desc);
return error;
}
pos += dpos;
if (context.dscrver == 2)
memcpy(iso9660_vrs_desc->identifier, "NSR02", 5);
else
memcpy(iso9660_vrs_desc->identifier, "NSR03", 5);
;
if ((error = udf_write_sector(iso9660_vrs_desc, pos))) {
free(iso9660_vrs_desc);
return error;
}
pos += dpos;
memcpy(iso9660_vrs_desc->identifier, "TEA01", 5);
if ((error = udf_write_sector(iso9660_vrs_desc, pos))) {
free(iso9660_vrs_desc);
return error;
}
}
free(iso9660_vrs_desc);
/* return success */
return 0;
}
/* --------------------------------------------------------------------- */
/*
* Main function that creates and writes out disc contents based on the
* format_flags's that uniquely define the type of disc to create.
*/
int
udf_do_newfs_prefix(void)
{
union dscrptr *zero_dscr;
union dscrptr *dscr;
struct mmc_trackinfo ti;
uint32_t sparable_blocks;
uint32_t sector_size, blockingnr;
uint32_t cnt, loc, len;
int sectcopy;
int error, integrity_type;
int data_part, metadata_part;
/* init */
sector_size = mmc_discinfo.sector_size;
/* determine span/size */
ti.tracknr = mmc_discinfo.first_track_last_session;
error = udf_update_trackinfo(&mmc_discinfo, &ti);
if (error)
return error;
if (mmc_discinfo.sector_size < context.sector_size) {
fprintf(stderr, "Impossible to format: sectorsize too small\n");
return EIO;
}
context.sector_size = sector_size;
/* determine blockingnr */
blockingnr = ti.packet_size;
if (blockingnr <= 1) {
/* paranoia on blockingnr */
switch (mmc_discinfo.mmc_profile) {
case 0x08 : /* CDROM */
case 0x09 : /* CD-R */
case 0x0a : /* CD-RW */
blockingnr = 32; /* UDF requirement */
break;
case 0x10 : /* DVDROM */
case 0x11 : /* DVD-R (DL) */
case 0x12 : /* DVD-RAM */
case 0x1b : /* DVD+R */
case 0x2b : /* DVD+R Dual layer */
case 0x13 : /* DVD-RW restricted overwrite */
case 0x14 : /* DVD-RW sequential */
blockingnr = 16; /* SCSI definition */
break;
case 0x40 : /* BDROM */
case 0x41 : /* BD-R Sequential recording (SRM) */
case 0x42 : /* BD-R Random recording (RRM) */
case 0x43 : /* BD-RE */
case 0x51 : /* HD DVD-R */
case 0x52 : /* HD DVD-RW */
blockingnr = 32; /* SCSI definition */
break;
default:
break;
}
}
if (blockingnr <= 0) {
printf("Can't fixup blockingnumber for device "
"type %d\n", mmc_discinfo.mmc_profile);
printf("Device is not returning valid blocking"
" number and media type is unknown.\n");
return EINVAL;
}
wrtrack_skew = ti.track_start % blockingnr;
if (mmc_discinfo.mmc_class == MMC_CLASS_CD) {
/* not too much for CD-RW, still 20MiB */
sparable_blocks = 32;
} else {
/* take a value for DVD*RW mainly, BD is `defect free' */
sparable_blocks = 512;
}
/* get layout */
error = udf_calculate_disc_layout(format_flags, context.min_udf,
wrtrack_skew,
ti.track_start, mmc_discinfo.last_possible_lba,
context.sector_size, blockingnr, sparable_blocks,
meta_fract);
/* cache partition for we need it often */
data_part = context.data_part;
metadata_part = context.metadata_part;
/* Create sparing table descriptor if applicable */
if (format_flags & FORMAT_SPARABLE) {
if ((error = udf_create_sparing_tabled()))
return error;
if (check_surface) {
if ((error = udf_surface_check()))
return error;
}
}
/* Create a generic terminator descriptor (later reused) */
terminator_dscr = calloc(1, sector_size);
if (terminator_dscr == NULL)
return ENOMEM;
udf_create_terminator(terminator_dscr, 0);
/*
* Start with wipeout of VRS1 upto start of partition. This allows
* formatting for sequentials with the track reservation and it
* cleans old rubbish on rewritables. For sequentuals without the
* track reservation all is wiped from track start.
*/
if ((zero_dscr = calloc(1, context.sector_size)) == NULL)
return ENOMEM;
loc = (format_flags & FORMAT_TRACK512) ? layout.vds1 : ti.track_start;
for (; loc < layout.part_start_lba; loc++) {
if ((error = udf_write_sector(zero_dscr, loc))) {
free(zero_dscr);
return error;
}
}
free(zero_dscr);
/* Create anchors */
for (cnt = 0; cnt < 3; cnt++) {
if ((error = udf_create_anchor(cnt))) {
return error;
}
}
/*
* Create the two Volume Descriptor Sets (VDS) each containing the
* following descriptors : primary volume, partition space,
* unallocated space, logical volume, implementation use and the
* terminator
*/
/* start of volume recognision sequence building */
context.vds_seq = 0;
/* Create primary volume descriptor */
if ((error = udf_create_primaryd()))
return error;
/* Create partition descriptor */
if ((error = udf_create_partitiond(context.data_part, media_accesstype)))
return error;
/* Create unallocated space descriptor */
if ((error = udf_create_unalloc_spaced()))
return error;
/* Create logical volume descriptor */
if ((error = udf_create_logical_dscr(format_flags)))
return error;
/* Create implementation use descriptor */
/* TODO input of fields 1,2,3 and passing them */
if ((error = udf_create_impvold(NULL, NULL, NULL)))
return error;
/* write out what we've created so far */
/* writeout iso9660 vrs */
if ((error = udf_write_iso9660_vrs()))
return error;
/* Writeout anchors */
for (cnt = 0; cnt < 3; cnt++) {
dscr = (union dscrptr *) context.anchors[cnt];
loc = layout.anchors[cnt];
if ((error = udf_write_dscr_phys(dscr, loc, 1)))
return error;
/* sequential media has only one anchor */
if (format_flags & FORMAT_SEQUENTIAL)
break;
}
/* write out main and secondary VRS */
for (sectcopy = 1; sectcopy <= 2; sectcopy++) {
loc = (sectcopy == 1) ? layout.vds1 : layout.vds2;
/* primary volume descriptor */
dscr = (union dscrptr *) context.primary_vol;
error = udf_write_dscr_phys(dscr, loc, 1);
if (error)
return error;
loc++;
/* partition descriptor(s) */
for (cnt = 0; cnt < UDF_PARTITIONS; cnt++) {
dscr = (union dscrptr *) context.partitions[cnt];
if (dscr) {
error = udf_write_dscr_phys(dscr, loc, 1);
if (error)
return error;
loc++;
}
}
/* unallocated space descriptor */
dscr = (union dscrptr *) context.unallocated;
error = udf_write_dscr_phys(dscr, loc, 1);
if (error)
return error;
loc++;
/* logical volume descriptor */
dscr = (union dscrptr *) context.logical_vol;
error = udf_write_dscr_phys(dscr, loc, 1);
if (error)
return error;
loc++;
/* implementation use descriptor */
dscr = (union dscrptr *) context.implementation;
error = udf_write_dscr_phys(dscr, loc, 1);
if (error)
return error;
loc++;
/* terminator descriptor */
error = udf_write_dscr_phys(terminator_dscr, loc, 1);
if (error)
return error;
loc++;
}
/* writeout the two sparable table descriptors (if needed) */
if (format_flags & FORMAT_SPARABLE) {
for (sectcopy = 1; sectcopy <= 2; sectcopy++) {
loc = (sectcopy == 1) ? layout.spt_1 : layout.spt_2;
dscr = (union dscrptr *) context.sparing_table;
len = layout.sparing_table_dscr_lbas;
/* writeout */
error = udf_write_dscr_phys(dscr, loc, len);
if (error)
return error;
}
}
/*
* Create unallocated space bitmap descriptor. Sequential recorded
* media report their own free/used space; no free/used space tables
* should be recorded for these.
*/
if ((format_flags & (FORMAT_SEQUENTIAL | FORMAT_READONLY)) == 0) {
error = udf_create_space_bitmap(
layout.alloc_bitmap_dscr_size,
layout.part_size_lba,
&context.part_unalloc_bits[data_part]);
if (error)
return error;
/* TODO: freed space bitmap if applicable */
/* mark space allocated for the unallocated space bitmap */
udf_mark_allocated(layout.unalloc_space, data_part,
layout.alloc_bitmap_dscr_size);
}
/*
* Create metadata partition file entries and allocate and init their
* space and free space maps.
*/
if (format_flags & FORMAT_META) {
error = udf_create_space_bitmap(
layout.meta_bitmap_dscr_size,
layout.meta_part_size_lba,
&context.part_unalloc_bits[metadata_part]);
if (error)
return error;
error = udf_create_meta_files();
if (error)
return error;
/* mark space allocated for meta partition and its bitmap */
udf_mark_allocated(layout.meta_file, data_part, 1);
udf_mark_allocated(layout.meta_mirror, data_part, 1);
udf_mark_allocated(layout.meta_bitmap, data_part, 1);
udf_mark_allocated(layout.meta_part_start_lba, data_part,
layout.meta_part_size_lba);
/* mark space allocated for the unallocated space bitmap */
udf_mark_allocated(layout.meta_bitmap_space, data_part,
layout.meta_bitmap_dscr_size);
}
/* create logical volume integrity descriptor */
context.num_files = 0;
context.num_directories = 0;
integrity_type = UDF_INTEGRITY_OPEN;
if ((error = udf_create_lvintd(integrity_type)))
return error;
/* writeout initial open integrity sequence + terminator */
loc = layout.lvis;
dscr = (union dscrptr *) context.logvol_integrity;
error = udf_write_dscr_phys(dscr, loc, 1);
if (error)
return error;
loc++;
error = udf_write_dscr_phys(terminator_dscr, loc, 1);
if (error)
return error;
/* create VAT if needed */
if (format_flags & FORMAT_VAT) {
context.vat_allocated = context.sector_size;
context.vat_contents = malloc(context.vat_allocated);
assert(context.vat_contents);
udf_prepend_VAT_file();
}
/* create FSD and writeout */
if ((error = udf_create_fsd()))
return error;
udf_mark_allocated(layout.fsd, metadata_part, 1);
dscr = (union dscrptr *) context.fileset_desc;
error = udf_write_dscr_virt(dscr, layout.fsd, metadata_part, 1);
return error;
}
/* specific routine for newfs to create empty rootdirectory */
int
udf_do_rootdir(void) {
union dscrptr *root_dscr;
int error;
/* create root directory and write out */
assert(context.unique_id == 0x10);
context.unique_id = 0;
if ((error = udf_create_new_rootdir(&root_dscr)))
return error;
udf_mark_allocated(layout.rootdir, context.metadata_part, 1);
error = udf_write_dscr_virt(root_dscr,
layout.rootdir, context.metadata_part, 1);
free(root_dscr);
return error;
}
int
udf_do_newfs_postfix(void)
{
union dscrptr *vat_dscr;
union dscrptr *dscr;
struct long_ad vatdata_pos;
uint32_t loc, len, phys, sects;
int data_part, metadata_part;
int error;
/* cache partition for we need it often */
data_part = context.data_part;
metadata_part = context.metadata_part;
if ((format_flags & FORMAT_SEQUENTIAL) == 0) {
/* update lvint and mark it closed */
udf_update_lvintd(UDF_INTEGRITY_CLOSED);
/* overwrite initial terminator */
loc = layout.lvis+1;
dscr = (union dscrptr *) context.logvol_integrity;
error = udf_write_dscr_phys(dscr, loc, 1);
if (error)
return error;
loc++;
/* mark end of integrity desciptor sequence again */
error = udf_write_dscr_phys(terminator_dscr, loc, 1);
if (error)
return error;
}
/* write out unallocated space bitmap on non sequential media */
if ((format_flags & (FORMAT_SEQUENTIAL | FORMAT_READONLY)) == 0) {
/* writeout unallocated space bitmap */
loc = layout.unalloc_space;
dscr = (union dscrptr *) (context.part_unalloc_bits[data_part]);
len = layout.alloc_bitmap_dscr_size;
error = udf_write_dscr_virt(dscr, loc, data_part, len);
if (error)
return error;
}
if (format_flags & FORMAT_META) {
loc = layout.meta_file;
dscr = (union dscrptr *) context.meta_file;
error = udf_write_dscr_virt(dscr, loc, data_part, 1);
if (error)
return error;
loc = layout.meta_mirror;
dscr = (union dscrptr *) context.meta_mirror;
error = udf_write_dscr_virt(dscr, loc, data_part, 1);
if (error)
return error;
loc = layout.meta_bitmap;
dscr = (union dscrptr *) context.meta_bitmap;
error = udf_write_dscr_virt(dscr, loc, data_part, 1);
if (error)
return error;
/* writeout unallocated space bitmap */
loc = layout.meta_bitmap_space;
dscr = (union dscrptr *)
(context.part_unalloc_bits[metadata_part]);
len = layout.meta_bitmap_dscr_size;
error = udf_write_dscr_virt(dscr, loc, data_part, len);
if (error)
return error;
}
/* create a VAT and account for FSD+root */
vat_dscr = NULL;
if (format_flags & FORMAT_VAT) {
/* update lvint to reflect the newest values (no writeout) */
udf_update_lvintd(UDF_INTEGRITY_CLOSED);
error = udf_append_VAT_file();
if (error)
return error;
/* write out VAT data */
sects = UDF_ROUNDUP(context.vat_size, context.sector_size) /
context.sector_size;
layout.vat = context.data_alloc_pos;
udf_data_alloc(sects, &vatdata_pos);
loc = udf_rw32(vatdata_pos.loc.lb_num);
phys = context.vtop_offset[context.data_part] + loc;
error = udf_write_phys(context.vat_contents, phys, sects);
if (error)
return error;
loc += sects;
/* create new VAT descriptor */
error = udf_create_VAT(&vat_dscr);
if (error)
return error;
context.data_alloc_pos++;
loc++;
error = udf_write_dscr_virt(vat_dscr, loc, metadata_part, 1);
free(vat_dscr);
if (error)
return error;
}
/* done */
return 0;
}
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