Let -truncate "sbsector" "new" work even if LBA-0-superblock is damaged
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6a921c7411
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b837ff30fc
@ -3028,6 +3028,7 @@ int Xorriso_overwrite_iso_head(struct XorrisO *xorriso,
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/* @param flag bit0= insist on tag_type 4 (relocated superblock tag)
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bit1= accept tag with ISO_MD5_AREA_CORRUPTED
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*/
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int Xorriso_find_sb_checksum(struct XorrisO *xorriso,
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char *head_buffer, int *vd_end, int flag)
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@ -3049,6 +3050,7 @@ int Xorriso_find_sb_checksum(struct XorrisO *xorriso,
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i++;
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ret= iso_util_decode_md5_tag(head_buffer + i * 2048, &tag_type, &pos,
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&range_start, &range_size, &next_tag, md5, 0);
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if(((unsigned int) ret) != ISO_MD5_AREA_CORRUPTED || !(flag & 2))
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if(ret <= 0)
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return(ret);
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if((flag & 1) && tag_type != 4)
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@ -3158,6 +3160,8 @@ md5_comp_failed:;
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bit2= issue message about success
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bit3= check whether source blocks are banned by in_sector_map
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bit4= refresh relocated sb checksum tag
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bit5= bit1 for Xorriso_find_sb_checksum:
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accept tag with ISO_MD5_AREA_CORRUPTED
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*/
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int Xorriso_update_iso_lba0(struct XorrisO *xorriso, int iso_lba, int isosize,
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char *head_buffer, struct CheckmediajoB *job,
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@ -3255,7 +3259,8 @@ int Xorriso_update_iso_lba0(struct XorrisO *xorriso, int iso_lba, int isosize,
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if(flag & 16) {
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/* Find relocated sb checksum tag */
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ret= Xorriso_find_sb_checksum(xorriso, head_buffer, &vd_end, 1);
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ret= Xorriso_find_sb_checksum(xorriso, head_buffer, &vd_end,
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1 | ((flag >> 4) & 2));
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if(ret > 0) {
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/* If it is recognizable then it matched in Xorriso_adjust_relocated_sb */
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checksum_block= ret - 1;
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@ -3271,7 +3276,7 @@ int Xorriso_update_iso_lba0(struct XorrisO *xorriso, int iso_lba, int isosize,
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Write only up to PVD end plus eventual invalidated tag.
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*/
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to_write= 2048 * 32;
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ret= Xorriso_find_sb_checksum(xorriso, head_buffer, &i, 0);
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ret= Xorriso_find_sb_checksum(xorriso, head_buffer, &i, ((flag >> 4) & 2));
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if(ret > 0) {
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if(!(flag & 16)) /* invalidate */
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memset(head_buffer + (ret - 1) * 2048, 0, 8);
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@ -3625,9 +3630,9 @@ int Xorriso_truncate_overwritable(struct XorrisO *xorriso, char *adr_mode,
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{
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int ret, iso_lba= 0, iso_session, iso_track, iso_size= 0, image_start_mode= 0;
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int old_size, new_size, blocks, was_indev= 0, checksum_block= 0, vd_end;
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int readable_blocks;
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int readable_blocks, headless_mode= 0, i;
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char image_start_value[81], *head_buffer= NULL, iso_volid[33];
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char *sb_buffer= NULL;
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char *sb_buffer= NULL, *checksum_pt;
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struct burn_drive_info *dinfo;
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struct burn_drive *drive = NULL, *in_drive = NULL;
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struct burn_multi_caps *caps= NULL;
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@ -3671,10 +3676,26 @@ int Xorriso_truncate_overwritable(struct XorrisO *xorriso, char *adr_mode,
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if(ret <= 0) {
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sprintf(xorriso->info_text,
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"-truncate_overwritable: Cannot read ISO 9660 Volume Descriptor from LBA 0");
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if((strcmp(adr_mode, "lba") == 0 || strcmp(adr_mode, "sbsector") == 0)
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&& strcmp(adjust, "new") == 0) {
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Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);
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ret= burn_get_read_capacity(drive, &old_size, 0);
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if(ret <= 0)
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goto ex;
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headless_mode= 1;
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} else {
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Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
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goto ex;
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}
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}
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if(headless_mode) {
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iso_lba= Scanf_io_size(adr_value, 0);
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ret= isoburn_read_iso_head(drive, iso_lba, &new_size, head_buffer,
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2 | (1 << 12));
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if(ret <= 0)
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goto not_iso_9660;
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} else {
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/* Check for PVD at image_start_value and learn new size */
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ret= Xorriso_decode_load_adr(xorriso, "-truncate_overwritable",
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adr_mode, adr_value, &image_start_mode,
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@ -3687,6 +3708,7 @@ int Xorriso_truncate_overwritable(struct XorrisO *xorriso, char *adr_mode,
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if(ret <= 0)
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goto ex;
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if(ret != 1) {
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not_iso_9660:;
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sprintf(xorriso->info_text,
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"-truncate_overwritable: Given address does not lead to ISO 9660 Volume Descriptor");
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Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
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@ -3701,6 +3723,7 @@ int Xorriso_truncate_overwritable(struct XorrisO *xorriso, char *adr_mode,
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ret= isoburn_read_iso_head(drive, iso_lba, &new_size, head_buffer, 2);
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if(ret <= 0)
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goto ex;
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}
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ret= Xorriso_find_sb_checksum(xorriso, head_buffer, &vd_end, 0);
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if(ret > 0)
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@ -3760,13 +3783,33 @@ wrong_adjust:;
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}
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/* Load first 64 kB and transfer VDs from head_buffer */
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ret= Xorriso_adjust_relocated_sb(xorriso, drive, head_buffer, &sb_buffer, 0);
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if(headless_mode) {
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Xorriso_alloc_meM(sb_buffer, char, 32 * 2048);
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memcpy(sb_buffer, head_buffer, 32 * 2048);
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for(i= 17; i < 32; i++)
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if(strncmp(sb_buffer + i * 2048, "libisofs_sb_checksum_tag_v1", 27) == 0)
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break;
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if(i < 32) {
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/* Convert superblock tag to provisory relocated superblock tag */
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checksum_pt= sb_buffer + i * 2048;
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memset(checksum_pt, 0, 2048);
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sprintf(checksum_pt,
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"libisofs_rlsb32_checksum_tag_v1 pos=%d range_start=0 range_size=%d",
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i, i);
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sprintf(checksum_pt + strlen(checksum_pt),
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" session_start=%d md5=0123456789abcdef0123456789abcdef self=0123456789abcdef0123456789abcdef",
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iso_lba);
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}
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} else {
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ret= Xorriso_adjust_relocated_sb(xorriso, drive, head_buffer, &sb_buffer,
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0);
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if(ret <= 0)
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goto ex;
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}
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/* Patch the size and write back */
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ret= Xorriso_update_iso_lba0(xorriso, iso_lba, iso_size, sb_buffer,
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NULL, 2 | 16);
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NULL, 2 | 16 | ((!!headless_mode) << 5));
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if(ret <= 0)
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goto ex;
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@ -9,7 +9,7 @@
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.\" First parameter, NAME, should be all caps
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.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
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.\" other parameters are allowed: see man(7), man(1)
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.TH XORRISO 1 "Version 1.5.5, Jan 15, 2023"
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.TH XORRISO 1 "Version 1.5.5, Feb 22, 2023"
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.\" Please adjust this date whenever revising the manpage.
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.\"
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.\" Some roff macros, for reference:
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@ -2785,6 +2785,10 @@ A number without "+" gives the overall number of bytes. In any case the result
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may not be smaller than "new". Numbers may have a unit suffix: "d"=512,
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"k"=1024, "s"=2048, "m"=1024k, "g"=1024m.
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.br
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Normally the volume descriptors at block 16 ff. have to be readable. Only with
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entity "lba" or "sbsector" and adjust mode "new" it is possible to address
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a session if block 16 ff. yields no valid volume descriptors.
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.br
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Examples:
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.br
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Activate session 4 and enable overwriting of the blocks of younger sessions:
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@ -2372,6 +2372,10 @@ File: xorriso.info, Node: Writing, Next: SetWrite, Prev: Filter, Up: Command
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any case the result may not be smaller than "new". Numbers may
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have a unit suffix: "d"=512, "k"=1024, "s"=2048, "m"=1024k,
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"g"=1024m.
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Normally the volume descriptors at block 16 ff. have to be
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readable. Only with entity "lba" or "sbsector" and adjust mode
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"new" it is possible to address a session if block 16 ff. yields
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no valid volume descriptors.
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Examples:
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Activate session 4 and enable overwriting of the blocks of younger
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sessions:
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@ -5710,7 +5714,7 @@ File: xorriso.info, Node: CommandIdx, Next: ConceptIdx, Prev: Legal, Up: Top
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* -chown_r sets ownership in ISO image: Manip. (line 47)
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* -clone copies ISO directory tree: Insert. (line 195)
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* -close controls media closing: SetWrite. (line 505)
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* -close_damaged closes damaged track and session: Writing. (line 205)
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* -close_damaged closes damaged track and session: Writing. (line 209)
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* -close_filter_list bans filter registration: Filter. (line 50)
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* -commit writes pending ISO image: Writing. (line 27)
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* -commit_eject writes and ejects: Writing. (line 53)
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@ -5963,7 +5967,7 @@ File: xorriso.info, Node: ConceptIdx, Prev: CommandIdx, Up: Top
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* Create, new ISO image, _definition: Methods. (line 7)
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* Cylinder alignment, _definition: Bootable. (line 340)
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* Cylinder size, _definition: Bootable. (line 325)
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* Damaged track and session, close, -close_damaged: Writing. (line 205)
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* Damaged track and session, close, -close_damaged: Writing. (line 209)
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* DEC Alpha SRM boot sector, production: Bootable. (line 410)
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* Delete, from ISO image, -rm: Manip. (line 20)
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* Delete, from ISO image, -rm_r: Manip. (line 26)
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@ -6265,42 +6269,42 @@ Node: Manip80374
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Node: CmdFind90474
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Node: Filter110498
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Node: Writing115120
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Node: SetWrite127375
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Node: Bootable158650
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Node: Jigdo186531
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Node: Charset191534
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Node: Exception194863
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Node: DialogCtl200992
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Node: Inquiry203594
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Node: Navigate214852
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Node: Verify223559
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Node: Restore234708
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Node: Emulation246916
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Node: Scripting257372
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Node: Frontend265155
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Node: Examples274781
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Node: ExDevices275959
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Node: ExCreate276620
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Node: ExDialog277920
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Node: ExGrowing279191
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Node: ExModifying280000
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Node: ExBootable280510
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Node: ExCharset281065
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Node: ExPseudo281961
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Node: ExCdrecord282888
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Node: ExMkisofs283208
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Node: ExGrowisofs285105
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Node: ExException286258
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Node: ExTime286716
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Node: ExIncBackup287174
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Node: ExRestore291200
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Node: ExRecovery292146
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Node: Files292718
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Node: Environ294052
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Node: Seealso294800
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Node: Bugreport295517
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Node: Legal296108
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Node: CommandIdx297120
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Node: ConceptIdx315018
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Node: SetWrite127614
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Node: Bootable158889
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Node: Jigdo186770
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Node: Charset191773
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Node: Exception195102
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Node: DialogCtl201231
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Node: Inquiry203833
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Node: Navigate215091
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Node: Verify223798
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Node: Restore234947
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Node: Emulation247155
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Node: Scripting257611
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Node: Frontend265394
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Node: Examples275020
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Node: ExDevices276198
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Node: ExCreate276859
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Node: ExDialog278159
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Node: ExGrowing279430
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Node: ExModifying280239
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Node: ExBootable280749
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Node: ExCharset281304
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Node: ExPseudo282200
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Node: ExCdrecord283127
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Node: ExMkisofs283447
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Node: ExGrowisofs285344
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Node: ExException286497
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Node: ExTime286955
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Node: ExIncBackup287413
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Node: ExRestore291439
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Node: ExRecovery292385
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Node: Files292957
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Node: Environ294291
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Node: Seealso295039
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Node: Bugreport295756
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Node: Legal296347
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Node: CommandIdx297359
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Node: ConceptIdx315257
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End Tag Table
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@ -50,7 +50,7 @@
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@c man .\" First parameter, NAME, should be all caps
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@c man .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
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@c man .\" other parameters are allowed: see man(7), man(1)
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@c man .TH XORRISO 1 "Version 1.5.5, Jan 15, 2023"
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@c man .TH XORRISO 1 "Version 1.5.5, Feb 22, 2023"
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@c man .\" Please adjust this date whenever revising the manpage.
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@c man .\"
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@c man .\" Some roff macros, for reference:
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@ -3252,6 +3252,10 @@ A number without "+" gives the overall number of bytes. In any case the result
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may not be smaller than "new". Numbers may have a unit suffix: "d"=512,
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"k"=1024, "s"=2048, "m"=1024k, "g"=1024m.
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@*
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Normally the volume descriptors at block 16 ff. have to be readable. Only with
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entity "lba" or "sbsector" and adjust mode "new" it is possible to address
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a session if block 16 ff. yields no valid volume descriptors.
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@*
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Examples:
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@*
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Activate session 4 and enable overwriting of the blocks of younger sessions:
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@ -1 +1 @@
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#define Xorriso_timestamP "2023.02.24.080036"
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#define Xorriso_timestamP "2023.02.24.162752"
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