Made program behavior with --grow_overwriteable_iso more consistent
This commit is contained in:
parent
53634f23de
commit
070afd1a9b
@ -2,7 +2,7 @@
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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 CDRSKIN 1 "August 26, 2007"
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.TH CDRSKIN 1 "August 27, 2007"
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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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@ -200,14 +200,16 @@ Best reader compatibility is achieved without it
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.br
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Currently types DVD+RW, DVD-RW and DVD-RAM can be overwritten via cdrskin.
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.br
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DVD+RW and DVD-RAM media get treated as blank media regardless wether they
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hold data or not. They need no special initial formatting.
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DVD+RW and DVD-RAM media need no special initial formatting. They offer a
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single continuous data area for blockwise random access.
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.br
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Option -audio is not allowed. Only one track is allowed.
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Option -multi cannot mark a recognizeable end of overwriteable media.
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Therefore -multi is banned unless ISO-9660 images shall be expandable by help
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of option --grow_overwriteable_iso.
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Without this option or without an ISO-9660 filesystem image present
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on media, -toc does not return information about the media content.
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on media, -toc does not return information about the media content and
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media get treated as blank regardless wether they hold data or not.
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.br
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Currently there is no difference between -sao and -tao. If ever, then -tao
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will be the mode which preserves the current behavior.
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@ -296,11 +298,11 @@ Print this list of blanking types.
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.TP
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all
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Blank an entire CD-RW or an unformatted DVD-RW.
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(See also --prodvd_cli_compatible)
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(See also --prodvd_cli_compatible, --grow_overwriteable_iso)
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.TP
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fast
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Minimally blank an entire CD-RW or blank an unformatted DVD-RW.
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(See also --prodvd_cli_compatible)
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(See also --prodvd_cli_compatible, --grow_overwriteable_iso)
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.TP
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format_overwrite
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Format a DVD-RW to "Restricted Overwrite". The user should bring some patience.
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@ -470,12 +472,6 @@ The following sessions can only be written in -tao mode. -multi is prohibited
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with DVD-R[W] DAO write mode. Option --prodvd_cli_compatible eventually makes
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-multi tolerable but cannot make it work.
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.br
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With overwriteable DVD media, -multi cannot mark the end of the session.
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So when adding a new session this end has to be determined from the payload.
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Currently only ISO-9660 filesystems can be used that way. See option
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.B \--grow_overwriteable_iso
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for lifting the ban on -multi.
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.br
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In order to have all filesystem content accessible, the eventual ISO-9660
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filesystem of a follow-up
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session needs to be prepared in a special way by the filesystem formatter
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@ -486,6 +482,12 @@ To retrieve an archive file which was written as follow-up session,
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you may use option -toc to learn about the "lba" of the desired track number.
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This lba is the address of the 2048 byte block where the archive begins.
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.br
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With overwriteable DVD media, -multi cannot mark the end of the session.
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So when adding a new session this end has to be determined from the payload.
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Currently only ISO-9660 filesystems can be used that way. See option
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.B \--grow_overwriteable_iso
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for lifting the ban on -multi.
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.br
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Note: -multi might make DVD media unreadable in some DVD-ROM drives.
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.TP
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.BI \-nopad
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@ -707,25 +709,31 @@ but adapted to the usage model of
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.B cdrskin -msinfo ; mkisofs -C -M | cdrskin [-multi] -
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.br
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--grow_overwriteable_iso does not hamper the use of true multi-session media.
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It demands nevertheless that the track source is a ISO-9660 filesystem image.
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With overwriteable media and no option blank=fast|all present it expands an
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eventual ISO-9660 filesystem. It is assumed that this image's inner size
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description points to the end of the valuable data on media.
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I.e. it is possible to use the same cdrskin options with both kinds of media
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and to achieve similar results if ISO-9660 filesystem images are to be written.
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This option implies option -isosize and therefore demands that the track
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source is a ISO-9660 filesystem image.
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.br
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Options -msinfo and -toc will then work for overwriteables. -toc will always
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show a single session with its size increasing with every added mkisofs image.
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With overwriteable media and no option blank=fast|all present it expands an
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eventual ISO-9660 filesystem on media. It is assumed that this image's inner
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size description points to the end of the valuable data.
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Overwriteable media with a recognizeable ISO-9660 size will be regarded as
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appendable rather than as blank. I.e. options -msinfo and -toc will work.
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-toc will always show a single session with its size increasing with
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every added mkisofs image.
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.br
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If not overriden by option write_start_address=, the track with the new image
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will be placed behind the end of the old one. One may use option
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assert_write_lba= to make sure that media state and mkisofs job do match.
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.br
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--grow_overwriteable_iso causes option blank=fast|all to invalidate an
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eventual ISO-9660 image by altering the first few bytes of block 16 on
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overwriteable media.
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.br
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If not overriden by option write_start_address=, the track with the new image
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will be placed at the end of the old one. One may use option assert_write_lba=
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to make sure that media state and mkisofs job do match.
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Option -multi is tolerated in order not to hamper true multi-session media.
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.br
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Note: The equivalent of growisofs -Z is
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.br
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(mkisofs | cdrskin --grow_overwriteable_iso blank=fast [-multi])
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.B mkisofs | cdrskin --grow_overwriteable_iso blank=fast [-multi]
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.br
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growisofs -dvd-compat is roughly equivalent to cdrskin without option -multi.
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.TP
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@ -3713,10 +3713,98 @@ adr_translation:;
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}
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/** Report media status s to the user */
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/** Read and buffer the start of an existing ISO-9660 image from
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overwriteable target media.
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*/
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int Cdrskin_overwriteable_iso_size(struct CdrskiN *skin, int *size, int flag)
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{
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#ifdef Cdrskin_libburn_has_random_access_rW
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int ret;
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off_t data_count= 0;
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double size_in_bytes;
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char *buf;
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buf= skin->overwriteable_iso_head;
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if(!skin->media_is_overwriteable)
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{ret= 0; goto ex;}
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/* Read first 64 kB */
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ret= burn_read_data(skin->grabbed_drive,(off_t) 0,buf,32*2048,&data_count,0);
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if(ret<=0)
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{ret= 0; goto ex;}
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ret= Scan_for_iso_size((unsigned char *) (buf+16*2048), &size_in_bytes,0);
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if(ret<=0) {
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if(skin->verbosity>=Cdrskin_verbose_debuG)
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ClN(fprintf(stderr,"cdrskin_debug: No detectable ISO-9660 size on media\n"));
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{ret= 0; goto ex;}
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}
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if(skin->verbosity>=Cdrskin_verbose_debuG)
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ClN(fprintf(stderr,"cdrskin_debug: detected ISO-9660 size : %.f (%fs)\n",
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size_in_bytes, size_in_bytes/2048.0));
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if(size_in_bytes/2048.0>2147483647-1-16) {
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fprintf(stderr,
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"cdrskin: FATAL : ISO-9660 filesystem in terabyte size detected\n");
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{ret= 0; goto ex;}
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}
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*size= size_in_bytes/2048.0;
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if(size_in_bytes-((double) *size)*2048.0>0.0)
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(*size)++;
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if((*size)%16)
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*size+= 16-((*size)%16);
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if(skin->grow_overwriteable_iso==1)
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skin->grow_overwriteable_iso= 2;
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ret= 1;
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ex:;
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return(ret);
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#else /* Cdrskin_libburn_has_random_access_rW */
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return(-1);
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#endif
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}
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int Cdrskin_invalidate_iso_head(struct CdrskiN *skin, int flag)
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{
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int ret;
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int size;
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fprintf(stderr,
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"cdrskin: blank=... : invalidating ISO-9660 head on overwriteable media\n");
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ret= Cdrskin_overwriteable_iso_size(skin,&size,0);
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if(ret<=0) {
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fprintf(stderr,
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"cdrskin: NOTE : Not an ISO-9660 file system. Left unaltered.\n");
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return(2);
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}
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skin->overwriteable_iso_head[16*2048]=
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skin->overwriteable_iso_head[16*2048+3]=
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skin->overwriteable_iso_head[16*2048+4]= 'x';
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ret= burn_random_access_write(skin->grabbed_drive,(off_t) 16*2048,
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skin->overwriteable_iso_head+16*2048,
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(off_t) 16*2048,1);
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return(ret);
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}
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/** Report media status s to the user
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@param flag Bitfield for control purposes:
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bit0= permission to check for overwriteable ISO image
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*/
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int Cdrskin_report_disc_status(struct CdrskiN *skin, enum burn_disc_status s,
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int flag)
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{
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int ret, iso_size;
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if(flag&1) {
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if(skin->media_is_overwriteable && skin->grow_overwriteable_iso>0) {
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if(skin->grow_overwriteable_iso==2)
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ret= 1;
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else
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ret= Cdrskin_overwriteable_iso_size(skin,&iso_size,0);
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if(ret>0)
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s= BURN_DISC_APPENDABLE;
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}
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}
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printf("cdrskin: status %d ",s);
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if(s==BURN_DISC_FULL) {
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printf("burn_disc_full \"There is a disc with data on it in the drive\"\n");
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@ -3951,77 +4039,6 @@ int Cdrskin_obtain_nwa(struct CdrskiN *skin, int *nwa, int flag)
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}
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/** Read and buffer the start of an existing ISO-9660 image from
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overwriteable target media.
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*/
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int Cdrskin_overwriteable_iso_size(struct CdrskiN *skin, int *size, int flag)
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{
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#ifdef Cdrskin_libburn_has_random_access_rW
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int ret;
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off_t data_count= 0;
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double size_in_bytes;
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char *buf;
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buf= skin->overwriteable_iso_head;
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if(!skin->media_is_overwriteable)
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{ret= 0; goto ex;}
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/* Read first 64 kB */
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ret= burn_read_data(skin->grabbed_drive,(off_t) 0,buf,32*2048,&data_count,0);
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if(ret<=0)
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{ret= 0; goto ex;}
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ret= Scan_for_iso_size((unsigned char *) (buf+16*2048), &size_in_bytes,0);
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if(ret<=0) {
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if(skin->verbosity>=Cdrskin_verbose_debuG)
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ClN(fprintf(stderr,"cdrskin_debug: No detectable ISO-9660 size on media\n"));
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{ret= 0; goto ex;}
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}
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if(skin->verbosity>=Cdrskin_verbose_debuG)
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ClN(fprintf(stderr,"cdrskin_debug: detected ISO-9660 size : %.f (%fs)\n",
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size_in_bytes, size_in_bytes/2048.0));
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if(size_in_bytes/2048.0>2147483647-1-16) {
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fprintf(stderr,
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"cdrskin: FATAL : ISO-9660 filesystem in terabyte size detected\n");
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{ret= 0; goto ex;}
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}
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*size= size_in_bytes/2048.0;
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if(size_in_bytes-((double) *size)*2048.0>0.0)
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(*size)++;
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if((*size)%16)
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*size+= 16-((*size)%16);
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skin->grow_overwriteable_iso= 2;
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ret= 1;
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ex:;
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return(ret);
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#else /* Cdrskin_libburn_has_random_access_rW */
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return(-1);
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#endif
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}
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int Cdrskin_invalidate_iso_head(struct CdrskiN *skin, int flag)
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{
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int ret;
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int size;
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fprintf(stderr,
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"cdrskin: blank=... : invalidating ISO-9660 head on overwriteable media\n");
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ret= Cdrskin_overwriteable_iso_size(skin,&size,0);
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if(ret<=0) {
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fprintf(stderr,
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"cdrskin: NOTE : Not an ISO-9660 file system. Left unaltered.\n");
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return(2);
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}
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skin->overwriteable_iso_head[16*2048]= 0;
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skin->overwriteable_iso_head[16*2048+3]=
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skin->overwriteable_iso_head[16*2048+4]= 'x';
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ret= burn_random_access_write(skin->grabbed_drive,(off_t) 16*2048,
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skin->overwriteable_iso_head+16*2048,
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(off_t) 16*2048,1);
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return(ret);
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}
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/** Perform -toc under control of Cdrskin_atip().
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@param flag Bitfield for control purposes:
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bit0= do not list sessions separately (do it cdrecord style)
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@ -4158,7 +4175,7 @@ int Cdrskin_atip(struct CdrskiN *skin, int flag)
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return(ret);
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drive= skin->drives[skin->driveno].drive;
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s= burn_disc_get_status(drive);
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Cdrskin_report_disc_status(skin,s,0);
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Cdrskin_report_disc_status(skin,s,1);
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if(s==BURN_DISC_APPENDABLE && skin->no_blank_appendable) {
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is_not_really_erasable= 1;
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} else if(s==BURN_DISC_EMPTY) {
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@ -4442,7 +4459,7 @@ int Cdrskin_blank(struct CdrskiN *skin, int flag)
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#endif
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if(skin->verbosity>=Cdrskin_verbose_progresS)
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Cdrskin_report_disc_status(skin,s,0);
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Cdrskin_report_disc_status(skin,s,1);
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do_format= skin->blank_format_type & 0xff;
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if(do_format == 1) {
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verb= "format";
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@ -4468,8 +4485,12 @@ int Cdrskin_blank(struct CdrskiN *skin, int flag)
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/* Forceful blanking to Sequential Recording for DVD-R[W] and CD-RW */
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if(!(profile_number == 0x14 || profile_number == 0x13 ||
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profile_number == 0x0a))
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profile_number == 0x0a)) {
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if(skin->grow_overwriteable_iso>0 && skin->media_is_overwriteable)
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goto pseudo_blank_ov;
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else
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goto unsupported_format_type;
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}
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} else if (do_format==1) {
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/* Formatting to become overwriteable for DVD-RW and DVD+RW */
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@ -4506,6 +4527,7 @@ int Cdrskin_blank(struct CdrskiN *skin, int flag)
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/* Classical blanking of erasable media */
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if(skin->grow_overwriteable_iso>0 && skin->media_is_overwriteable) {
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pseudo_blank_ov:;
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if(skin->dummy_mode) {
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fprintf(stderr,
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"cdrskin: would have begun to pseudo-blank disc if not in -dummy mode\n");
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@ -5449,6 +5471,8 @@ int Cdrskin_grow_overwriteable_iso(struct CdrskiN *skin, int flag)
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fprintf(stderr,"cdrskin: SORRY : No recognizable ISO-9660 on media\n");
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return(0);
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}
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if(skin->write_start_address>=0.0)
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media_size= skin->write_start_address;
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/* Write new sum into media descr 0 */
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md= skin->overwriteable_iso_head+16*2048;
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@ -5534,7 +5558,7 @@ int Cdrskin_burn(struct CdrskiN *skin, int flag)
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drive= skin->drives[skin->driveno].drive;
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s= burn_disc_get_status(drive);
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if(skin->verbosity>=Cdrskin_verbose_progresS)
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Cdrskin_report_disc_status(skin,s,0);
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Cdrskin_report_disc_status(skin,s,1);
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#ifndef Cdrskin_libburn_write_mode_ruleS
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@ -6007,9 +6031,11 @@ int Cdrskin_msinfo(struct CdrskiN *skin, int flag)
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if(skin->grow_overwriteable_iso==1 || skin->grow_overwriteable_iso==2) {
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lba= 0;
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ret= Cdrskin_overwriteable_iso_size(skin,&nwa,0);
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if(ret>0)
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if(ret>0) {
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s= BURN_DISC_APPENDABLE;
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goto put_out;
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}
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}
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Cdrskin_report_disc_status(skin,s,0);
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fprintf(stderr,"cdrskin: FATAL : -msinfo can only operate on appendable (i.e. -multi) discs\n");
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if(skin->grow_overwriteable_iso>0)
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@ -1 +1 @@
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#define Cdrskin_timestamP "2007.08.26.200829"
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#define Cdrskin_timestamP "2007.08.28.143057"
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