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author Vas Crabb <vas@vastheman.com>2019-03-26 11:13:37 +1100
committer Vas Crabb <vas@vastheman.com>2019-03-26 11:13:37 +1100
commit97b67170277437131adf6ed4d60139c172529e4f (patch)
tree7a5cbf608f191075f1612b1af15832c206a3fe2d /src/tools/imgtool/modules/rt11.cpp
parentb380514764cf857469bae61c11143a19f79a74c5 (diff)
(nw) Clean up the mess on master
This effectively reverts b380514764cf857469bae61c11143a19f79a74c5 and c24473ddff715ecec2e258a6eb38960cf8c8e98e, restoring the state at 598cd5227223c3b04ca31f0dbc1981256d9ea3ff. Before pushing, please check that what you're about to push is sane. Check your local commit log and ensure there isn't anything out-of-place before pushing to mainline. When things like this happen, it wastes everyone's time. I really don't need this in a week when real work™ is busting my balls and I'm behind where I want to be with preparing for MAME release.
Diffstat (limited to 'src/tools/imgtool/modules/rt11.cpp')
-rw-r--r--src/tools/imgtool/modules/rt11.cpp695
1 files changed, 695 insertions, 0 deletions
diff --git a/src/tools/imgtool/modules/rt11.cpp b/src/tools/imgtool/modules/rt11.cpp
new file mode 100644
index 00000000000..f7f5a515f2c
--- /dev/null
+++ b/src/tools/imgtool/modules/rt11.cpp
@@ -0,0 +1,695 @@
+// license:BSD-3-Clause
+// copyright-holders:Sergey Svishchev
+/****************************************************************************
+
+ rt11.cpp
+
+ DEC RT-11 disk images
+
+ References:
+
+ VaFFM -- bitsavers://pdf/dec/pdp11/rt11/v5.6_Aug91/AA-PD6PA-TC_RT-11_Volume_and_File_Formats_Manual_Aug91.pdf
+ DHM -- bitsavers://pdf/dec/pdp11/rt11/v5.6_Aug91/AA-PE7VA-TC_RT-11_Device_Handlers_Manual_Aug91.pdf
+ SSM -- bitsavers://pdf/dec/pdp11/rt11/v5.0_Mar83/AA-H379B-TC_5.0_SWsuppMar83.pdf
+ TSX+ -- bitsavers://pdf/dec/pdp11/tsxPlus/manuals_6.31/TSX-Plus_UsersRef_Jan88.pdf
+ PUTR -- http://www.dbit.com/pub/putr/putr.asm
+
+ To do:
+ - filter for text files
+ - read-write support
+ - report empty 'last modified' time if date field is all zeros
+ - report free space
+ - arbitrary sized images
+ - don't crash when strings in home block have non-ascii chars (charconverter does not apply)
+ - do something about bootblock bug in imgtool (commit aca90520)
+
+ LBN Contents
+ --- --------
+ 0 Reserved (primary bootstrap)
+ 1 Reserved (home block)
+ 2-5 Reserved (secondary bootstrap)
+ 6-7 Directory segment 1
+ ... Directory segment 2-n
+ ... Data
+
+ Home block
+ ----------
+ 000-201 Bad block replacement table
+ 202-203 ?
+ 204-251 INITIALIZE/RESTORE data area
+ 252-273 BUP information area
+ 274-677 ?
+ 700-701 (Reserved for Digital, must be zero)
+ 702-703 (Reserved for Digital, must be zero)
+ 704-721 ?
+ 722-723 Pack cluster size (= 1)
+ 724-725 Block number of first directory segment
+ 726-727 System version (RAD50)
+ 730-742 Volume Identification
+ 744-757 Owner name
+ 760-773 System Identification
+ 776-777 Checksum
+
+ Directory segment header
+ ------------------------
+ 0 The total number of segments in this directory.
+ 1 The segment number of the next logical directory segment. If this word is 0, there are no more segments in the list.
+ 2 The number of the highest segment currently in use. Valid only in the first directory segment.
+ 3 The number of extra bytes per directory entry, always an unsigned, even octal number.
+ 4 The block number on the volume where the actual stored data identified by this segment begins.
+
+ Directory entry
+ ---------------
+ 0 Status word
+ 1 File name 1-3 (RAD50)
+ 2 File name 4-6 (RAD50)
+ 3 File type 1-3 (RAD50)
+ 4 Total file length (blocks)
+ 5 Job#, Channel# (RT-11 uses this information only for tentative files)
+ 6 Creation date
+ 7- Optional extra words
+
+****************************************************************************/
+
+#include "imgtool.h"
+#include "formats/imageutl.h"
+#include "iflopimg.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+namespace
+{
+ struct rt11_diskinfo
+ {
+ uint16_t directory_start;
+ uint16_t total_segments;
+ uint16_t last_segment;
+ uint16_t dirent_size;
+ int dirents_per_block;
+ // autodetected
+ int tracks;
+ int heads;
+ int sectors;
+ uint32_t sector_size;
+ // cache
+ int map[16];
+ int cached_track;
+ int cached_head;
+ };
+
+ enum misc_t
+ {
+ HOME_BLOCK = 1,
+ BLOCK_SIZE = 512
+ };
+
+ struct rt11_direnum
+ {
+ uint8_t segment_data[2 * BLOCK_SIZE];
+ uint16_t segment;
+ uint16_t index;
+ uint16_t data;
+ };
+
+ struct rt11_dirent
+ {
+ uint16_t status;
+ uint16_t filename[3];
+ uint16_t time;
+ // synthetic
+ uint64_t filesize;
+ uint16_t data;
+ };
+
+ enum rt11_status
+ {
+ E_PRE = 0000020,
+ E_TENT = 0000400,
+ E_MPTY = 0001000,
+ E_PERM = 0002000,
+ E_EOS = 0004000,
+ E_READ = 0040000,
+ E_PROT = 0100000
+ };
+
+ enum creation_policy_t
+ {
+ CREATE_NONE,
+ CREATE_FILE,
+ };
+
+
+ util::arbitrary_datetime _rt11_crack_time(uint16_t rt11_time)
+ {
+ util::arbitrary_datetime dt;
+
+ dt.second = 0;
+ dt.minute = 0;
+ dt.hour = 0;
+ dt.day_of_month = (rt11_time >> 5) & 31;
+ dt.month = (rt11_time >> 10) & 15;
+ dt.year = 1972 + (rt11_time & 31) + 32 * ((rt11_time >> 14) & 3);
+
+ return dt;
+ }
+
+ imgtool::datetime rt11_crack_time(uint16_t rt11_time)
+ {
+ util::arbitrary_datetime dt;
+ imgtool::datetime it;
+
+ if (rt11_time == 0)
+ {
+ return imgtool::datetime(imgtool::datetime::datetime_type::NONE, dt);
+ }
+
+ dt = _rt11_crack_time(rt11_time);
+
+ it = imgtool::datetime(imgtool::datetime::datetime_type::LOCAL, dt);
+
+ return it;
+ }
+
+ void rt11_from_rad50(char *ascii, uint16_t *rad50, int num)
+ {
+ const char rad[] = " ABCDEFGHIJKLMNOPQRSTUVWXYZ$.%0123456789:";
+
+ for (int i = 0, j = 0; i < num; i++)
+ {
+ ascii[j++] = rad[ rad50[i] / (050 * 050)];
+ ascii[j++] = rad[(rad50[i] / 050) % 050];
+ ascii[j++] = rad[ rad50[i] % 050];
+ }
+ }
+
+ void rt11_filename_from_rad50(char *ascii, uint16_t *rad50)
+ {
+ int i, j;
+
+ rt11_from_rad50(&ascii[0], &rad50[0], 2);
+ for (i = 0; i < 6; i++)
+ {
+ if (ascii[i] == ' ') break;
+ }
+ ascii[i++] = '.';
+ rt11_from_rad50(&ascii[i], &rad50[2], 1);
+ for (j = i; j < i + 3; j++)
+ {
+ if (ascii[j] == ' ') break;
+ }
+ ascii[j] = '\0';
+ }
+
+ int is_file_storagetype(uint16_t status)
+ {
+ return !(status & (E_MPTY | E_EOS | E_TENT));
+ }
+
+ rt11_diskinfo *get_rt11_info(imgtool::image &image)
+ {
+ return (rt11_diskinfo *)imgtool_floppy_extrabytes(image);
+ }
+}
+
+
+static imgtoolerr_t rt11_image_get_geometry(imgtool::image &image, uint32_t *tracks, uint32_t *heads, uint32_t *sectors)
+{
+ const rt11_diskinfo *di = get_rt11_info(image);
+
+ *sectors = di->sectors;
+ *heads = di->heads;
+ *tracks = di->tracks;
+ return IMGTOOLERR_SUCCESS;
+}
+
+static imgtoolerr_t rt11_get_sector_position(imgtool::image &image, uint32_t sector_index,
+ uint32_t &head, uint32_t &track, uint32_t &sector)
+{
+ imgtoolerr_t err;
+ rt11_diskinfo *di = get_rt11_info(image);
+ uint32_t tracks, heads, sectors;
+
+ err = image.get_geometry(&tracks, &heads, &sectors);
+ if (err)
+ return err;
+
+ track = sector_index / sectors / heads;
+ head = (sector_index / sectors) % heads;
+
+ // map 1-based sector numbers, possibly interleaved, to sector indexes
+ if (track != di->cached_track || head != di->cached_head)
+ {
+ memset(di->map, -1, sizeof(di->map));
+ for (int i = 0; i < 256; i++)
+ {
+ int sector_id;
+
+ if (floppy_get_indexed_sector_info(imgtool_floppy(image), head, track, i, NULL, NULL, &sector_id, NULL, NULL))
+ continue;
+
+ if (sector_id > 0 && sector_id <= sectors)
+ di->map[sector_id - 1] = i;
+ }
+ di->cached_track = track;
+ di->cached_head = head;
+ }
+
+ if (di->map[(sector_index % sectors)] < 0)
+ {
+ return IMGTOOLERR_SEEKERROR;
+ }
+ else
+ {
+ sector = di->map[(sector_index % sectors)];
+ return IMGTOOLERR_SUCCESS;
+ }
+}
+
+
+static imgtoolerr_t rt11_image_readblock(imgtool::image &image, void *buffer, uint64_t block)
+{
+ imgtoolerr_t err;
+ floperr_t ferr;
+ const rt11_diskinfo *di = get_rt11_info(image);
+ uint32_t track, head, sector;
+ unsigned long flags;
+
+ if (di->sector_size == 256)
+ {
+ err = rt11_get_sector_position(image, block * 2, head, track, sector);
+ if (err)
+ return err;
+
+ ferr = floppy_read_indexed_sector(imgtool_floppy(image), head, track, sector, 0, buffer, 256);
+ if (ferr)
+ return imgtool_floppy_error(ferr);
+
+ ferr = floppy_get_indexed_sector_info(imgtool_floppy(image), head, track, sector, NULL, NULL, NULL, NULL, &flags);
+ if (ferr)
+ return imgtool_floppy_error(ferr);
+
+ if (flags)
+ return IMGTOOLERR_READERROR;
+
+ err = rt11_get_sector_position(image, (block * 2) + 1, head, track, sector);
+ if (err)
+ return err;
+
+ ferr = floppy_read_indexed_sector(imgtool_floppy(image), head, track, sector, 0, ((uint8_t *) buffer) + 256, 256);
+ if (ferr)
+ return imgtool_floppy_error(ferr);
+
+ ferr = floppy_get_indexed_sector_info(imgtool_floppy(image), head, track, sector, NULL, NULL, NULL, NULL, &flags);
+ if (ferr)
+ return imgtool_floppy_error(ferr);
+
+ if (flags)
+ return IMGTOOLERR_READERROR;
+ }
+ else
+ {
+ err = rt11_get_sector_position(image, block, head, track, sector);
+ if (err)
+ return err;
+
+ ferr = floppy_read_indexed_sector(imgtool_floppy(image), head, track, sector, 0, buffer, BLOCK_SIZE);
+ if (ferr)
+ return imgtool_floppy_error(ferr);
+
+ ferr = floppy_get_indexed_sector_info(imgtool_floppy(image), head, track, sector, NULL, NULL, NULL, NULL, &flags);
+ if (ferr)
+ return imgtool_floppy_error(ferr);
+
+ if (flags)
+ return IMGTOOLERR_READERROR;
+ }
+
+ return IMGTOOLERR_SUCCESS;
+}
+
+static imgtoolerr_t rt11_probe_geometry(imgtool::image &image)
+{
+ floperr_t ferr;
+ rt11_diskinfo *di = get_rt11_info(image);
+
+ // MX (11x256 byte sectors) or MY (10x512 byte sectors)?
+ ferr = floppy_get_indexed_sector_info(imgtool_floppy(image), 0, 0, 0, NULL, NULL, NULL, &di->sector_size, NULL);
+ if (ferr)
+ return imgtool_floppy_error(ferr);
+
+ if (di->sector_size == 256)
+ di->sectors = 11;
+ else
+ di->sectors = 10;
+
+ // double- or single-sided?
+ ferr = floppy_get_indexed_sector_info(imgtool_floppy(image), 1, 0, 0, NULL, NULL, NULL, NULL, NULL);
+ if (ferr)
+ di->heads = 1;
+ else
+ di->heads = 2;
+
+ // 80 or 40 tracks?
+ ferr = floppy_get_indexed_sector_info(imgtool_floppy(image), 0, 50, 0, NULL, NULL, NULL, NULL, NULL);
+ if (ferr)
+ di->tracks = 40;
+ else
+ di->tracks = 80;
+
+ return IMGTOOLERR_SUCCESS;
+}
+
+static imgtoolerr_t rt11_image_open(imgtool::image &image, imgtool::stream::ptr &&dummy)
+{
+ imgtoolerr_t err;
+ uint8_t buffer[BLOCK_SIZE];
+ rt11_diskinfo *di = get_rt11_info(image);
+
+ di->cached_head = -1;
+ di->cached_track = -1;
+ memset(di->map, -1, sizeof(di->map));
+ // dummy values for rt11_image_readblock
+ di->tracks = 40;
+ di->heads = 1;
+
+ err = rt11_probe_geometry(image);
+ if (err)
+ return err;
+
+ /* load home block */
+ err = rt11_image_readblock(image, buffer, HOME_BLOCK);
+ if (err)
+ return err;
+
+ di->directory_start = pick_integer_le(buffer, 0724, 2);
+
+ // real-world images seem to never have a valid checksum, but directory_start is always 6
+#if 0
+ uint16_t tmp, cksum;
+
+ tmp = 0;
+ cksum = pick_integer_le(buffer, 0776, 2);
+ for (int i = 0; i < 510; i+=2)
+ {
+ tmp += pick_integer_le(buffer, i, 2);
+ }
+
+ /* sanity check these values */
+ if (cksum != tmp)
+ {
+ fprintf(stderr, "cksum stored:computed %04x:%04x\n", cksum, tmp);
+ return IMGTOOLERR_CORRUPTIMAGE;
+ }
+#endif
+ if (di->directory_start != 6)
+ {
+ return IMGTOOLERR_CORRUPTIMAGE;
+ }
+
+ /* load first directory segment */
+ err = rt11_image_readblock(image, buffer, di->directory_start);
+ if (err)
+ return err;
+
+ di->total_segments = pick_integer_le(buffer, 0, 2);
+ di->last_segment = pick_integer_le(buffer, 4, 2);
+ di->dirent_size = (pick_integer_le(buffer, 6, 2) + 7) * 2;
+ di->dirents_per_block = (2 * BLOCK_SIZE - 10) / di->dirent_size;
+
+ return IMGTOOLERR_SUCCESS;
+}
+
+static void rt11_image_info(imgtool::image &image, std::ostream &stream)
+{
+ uint8_t buffer[BLOCK_SIZE];
+ char system[4];
+ char vid[13], oid[13], sid[13];
+
+ rt11_image_readblock(image, buffer, HOME_BLOCK);
+ rt11_from_rad50(system, (uint16_t *)&buffer[0726], 1);
+ system[3] = '\0';
+
+ memcpy(vid, &buffer[0730], 12);
+ memcpy(oid, &buffer[0744], 12);
+ memcpy(sid, &buffer[0760], 12);
+ vid[12] = '\0';
+ oid[12] = '\0';
+ sid[12] = '\0';
+
+ stream << "System version: '" << system << "', System ID: '" << sid << "', Volume ID: '" << vid << "', Owner: '" << oid << "'";
+}
+
+// directory operations
+
+static imgtoolerr_t rt11_enum_seek(imgtool::image &image,
+ rt11_direnum *rt11enum, uint16_t segment, uint16_t index)
+{
+ const rt11_diskinfo *di = get_rt11_info(image);
+ imgtoolerr_t err;
+ uint8_t buffer[BLOCK_SIZE];
+
+ if (rt11enum->segment != segment)
+ {
+ if (segment != 0)
+ {
+ err = rt11_image_readblock(image, buffer, di->directory_start + (segment - 1) * 2);
+ if (err)
+ return err;
+ memcpy(rt11enum->segment_data, buffer, sizeof(buffer));
+
+ err = rt11_image_readblock(image, buffer, di->directory_start + (segment - 1) * 2 + 1);
+ if (err)
+ return err;
+ memcpy(&rt11enum->segment_data[BLOCK_SIZE], buffer, sizeof(buffer));
+
+ rt11enum->data = pick_integer_le(rt11enum->segment_data, 8, 2);
+ }
+ rt11enum->segment = segment;
+ }
+
+ rt11enum->index = index;
+ return IMGTOOLERR_SUCCESS;
+}
+
+static imgtoolerr_t rt11_get_next_dirent(imgtool::image &image,
+ rt11_direnum *rt11enum, rt11_dirent &rt_ent)
+{
+ imgtoolerr_t err;
+ const rt11_diskinfo *di = get_rt11_info(image);
+ uint32_t next_segment, next_index;
+ uint32_t offset;
+
+ memset(&rt_ent, 0, sizeof(rt_ent));
+
+ /* have we hit the end of the file? */
+ if (rt11enum->segment == 0)
+ return IMGTOOLERR_SUCCESS;
+
+ /* populate the resulting dirent */
+ offset = (rt11enum->index * di->dirent_size) + 10;
+ rt_ent.status = pick_integer_le(rt11enum->segment_data, offset, 2);
+ memcpy(rt_ent.filename, &rt11enum->segment_data[offset + 2], 6);
+ rt_ent.filesize = pick_integer_le(rt11enum->segment_data, offset + 8, 2) * BLOCK_SIZE;
+ rt_ent.data = rt11enum->data;
+ rt_ent.time = pick_integer_le(rt11enum->segment_data, offset + 12, 2);
+ rt11enum->data += pick_integer_le(rt11enum->segment_data, offset + 8, 2);
+
+ /* identify next entry */
+ next_segment = rt11enum->segment;
+ next_index = rt11enum->index + 1;
+ if (next_index >= di->dirents_per_block || (rt_ent.status & E_EOS))
+ {
+ next_segment = pick_integer_le(rt11enum->segment_data, 2, 2);
+ next_index = 0;
+ }
+
+ if (next_segment > di->total_segments || next_segment > di->last_segment)
+ return IMGTOOLERR_CORRUPTIMAGE;
+
+ /* seek next segment */
+ err = rt11_enum_seek(image, rt11enum, next_segment, next_index);
+ if (err)
+ return err;
+
+ return IMGTOOLERR_SUCCESS;
+}
+
+static imgtoolerr_t rt11_image_beginenum(imgtool::directory &enumeration, const char *path)
+{
+ imgtoolerr_t err;
+ imgtool::image &image(enumeration.image());
+
+ /* seek initial block */
+ err = rt11_enum_seek(image, (rt11_direnum *) enumeration.extra_bytes(), 1, 0);
+ if (err)
+ return err;
+
+ return IMGTOOLERR_SUCCESS;
+}
+
+static imgtoolerr_t rt11_image_nextenum(imgtool::directory &enumeration, imgtool_dirent &ent)
+{
+ imgtoolerr_t err;
+ imgtool::image &image(enumeration.image());
+ rt11_direnum *rt11enum = (rt11_direnum *)enumeration.extra_bytes();
+ rt11_dirent rt_ent;
+
+ do
+ {
+ err = rt11_get_next_dirent(image, rt11enum, rt_ent);
+ if (err)
+ return err;
+ }
+ while (rt11enum->segment && !is_file_storagetype(rt_ent.status));
+
+ /* end of file? */
+ if (rt11enum->segment == 0)
+ {
+ ent.eof = 1;
+ return IMGTOOLERR_SUCCESS;
+ }
+
+ ent.directory = 0;
+ ent.lastmodified_time = rt11_crack_time(rt_ent.time);
+ ent.filesize = rt_ent.filesize;
+
+ rt11_filename_from_rad50(ent.filename, rt_ent.filename);
+
+ snprintf(ent.attr, sizeof(ent.attr), "%c%c%c %4d %06o",
+ rt_ent.status & E_PROT ? 'P' : '.',
+ rt_ent.time == 0 ? 'B' : '.',
+ rt_ent.status & E_TENT ? 'T' : '.',
+ rt_ent.data, rt_ent.status);
+
+ return IMGTOOLERR_SUCCESS;
+}
+
+// file operations
+
+static imgtoolerr_t rt11_lookup_path(imgtool::image &image, const char *path,
+ creation_policy_t create, rt11_direnum *direnum, rt11_dirent *rt_ent)
+{
+ imgtoolerr_t err;
+ rt11_direnum my_direnum;
+ uint16_t this_segment;
+ uint32_t this_index;
+ char filename[16];
+
+ if (!direnum)
+ direnum = &my_direnum;
+
+ memset(direnum, 0, sizeof(*direnum));
+ err = rt11_enum_seek(image, direnum, 1, 0);
+ if (err)
+ goto done;
+
+ do
+ {
+ this_segment = direnum->segment;
+ this_index = direnum->index;
+
+ err = rt11_get_next_dirent(image, direnum, *rt_ent);
+ if (err)
+ goto done;
+ rt11_filename_from_rad50(filename, rt_ent->filename);
+ }
+ while(direnum->segment && (strcmp(path, filename) ||
+ !is_file_storagetype(rt_ent->status)));
+
+ if (!direnum->segment)
+ {
+ /* did not find file; maybe we need to create it */
+ if (create == CREATE_NONE)
+ {
+ err = IMGTOOLERR_FILENOTFOUND;
+ goto done;
+ }
+ }
+ else
+ {
+ /* we've found the file; seek that dirent */
+ err = rt11_enum_seek(image, direnum, this_segment, this_index);
+ if (err)
+ goto done;
+ }
+
+ err = IMGTOOLERR_SUCCESS;
+done:
+ return err;
+}
+
+static imgtoolerr_t rt11_read_bootblock(imgtool::partition &partition, imgtool::stream &stream)
+{
+ imgtoolerr_t err;
+ uint8_t block[BLOCK_SIZE];
+
+ err = rt11_image_readblock(partition.image(), block, 0);
+ if (err)
+ return err;
+
+ stream.write(block, sizeof(block));
+ return IMGTOOLERR_SUCCESS;
+}
+
+static imgtoolerr_t rt11_image_readfile(imgtool::partition &partition, const char *filename, const char *fork, imgtool::stream &destf)
+{
+ imgtoolerr_t err;
+ imgtool::image &image(partition.image());
+ rt11_dirent rt_ent;
+ uint8_t buffer[BLOCK_SIZE];
+
+ if (filename == FILENAME_BOOTBLOCK)
+ return rt11_read_bootblock(partition, destf);
+
+ err = rt11_lookup_path(image, filename, CREATE_NONE, NULL, &rt_ent);
+ if (err)
+ return err;
+
+ for (uint16_t i = rt_ent.data; i < rt_ent.data + (rt_ent.filesize / BLOCK_SIZE); i++)
+ {
+ err = rt11_image_readblock(image, buffer, i);
+ if (err)
+ return err;
+
+ destf.write(buffer, BLOCK_SIZE);
+ }
+
+ return IMGTOOLERR_SUCCESS;
+}
+
+
+void rt11_get_info(const imgtool_class *imgclass, uint32_t state, union imgtoolinfo *info)
+{
+ switch (state)
+ {
+ /* --- the following bits of info are returned as 64-bit signed integers --- */
+ case IMGTOOLINFO_INT_PREFER_UCASE: info->i = 1; break;
+ case IMGTOOLINFO_INT_OPEN_IS_STRICT: info->i = 1; break;
+ case IMGTOOLINFO_INT_SUPPORTS_LASTMODIFIED_TIME: info->i = 1; break;
+ case IMGTOOLINFO_INT_SUPPORTS_BOOTBLOCK: info->i = 1; break;
+ case IMGTOOLINFO_INT_BLOCK_SIZE: info->i = BLOCK_SIZE; break;
+ case IMGTOOLINFO_INT_IMAGE_EXTRA_BYTES: info->i = sizeof(rt11_diskinfo); break;
+ case IMGTOOLINFO_INT_DIRECTORY_EXTRA_BYTES: info->i = sizeof(rt11_direnum); break;
+
+ /* --- the following bits of info are returned as NULL-terminated strings --- */
+ case IMGTOOLINFO_STR_NAME: strcpy(info->s = imgtool_temp_str(), "rt11"); break;
+ case IMGTOOLINFO_STR_DESCRIPTION: strcpy(info->s = imgtool_temp_str(), "RT11 format"); break;
+ case IMGTOOLINFO_STR_FILE: strcpy(info->s = imgtool_temp_str(), __FILE__); break;
+ case IMGTOOLINFO_STR_EOLN: strcpy(info->s = imgtool_temp_str(), EOLN_CRLF); break;
+
+ /* --- the following bits of info are returned as pointers to data or functions --- */
+ case IMGTOOLINFO_PTR_INFO: info->info = rt11_image_info; break;
+ case IMGTOOLINFO_PTR_MAKE_CLASS: info->make_class = imgtool_floppy_make_class; break;
+ case IMGTOOLINFO_PTR_GET_GEOMETRY: info->get_geometry = rt11_image_get_geometry; break;
+ case IMGTOOLINFO_PTR_READ_BLOCK: info->read_block = rt11_image_readblock; break;
+ case IMGTOOLINFO_PTR_BEGIN_ENUM: info->begin_enum = rt11_image_beginenum; break;
+ case IMGTOOLINFO_PTR_NEXT_ENUM: info->next_enum = rt11_image_nextenum; break;
+ case IMGTOOLINFO_PTR_READ_FILE: info->read_file = rt11_image_readfile; break;
+
+ case IMGTOOLINFO_PTR_FLOPPY_OPEN: info->open = rt11_image_open; break;
+ case IMGTOOLINFO_PTR_FLOPPY_FORMAT: info->p = (void *) floppyoptions_default; break;
+ }
+}