Date: Sat, 3 Oct 2015 12:10:38 -0700 From: Garrett Cooper <yaneurabeya@gmail.com> To: Thomas Schmitt <scdbackup@gmx.net> Cc: freebsd-hackers@freebsd.org Subject: Re: Which program produces FreeBSD-11.0-CURRENT-amd64-*-disc1.iso ? Message-ID: <C51B6109-BF87-4374-BCD3-B762ACE98721@gmail.com> In-Reply-To: <23122582300370917262@scdbackup.webframe.org> References: <23122582300370917262@scdbackup.webframe.org>
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> On Oct 3, 2015, at 11:09, Thomas Schmitt <scdbackup@gmx.net> wrote: >=20 > Hi, >=20 > the image FreeBSD-11.0-CURRENT-amd64-20151001-r288459-disc1.iso > from > http://ftp.freebsd.org/%2Fpub/FreeBSD/snapshots/amd64/amd64/ISO-IMAGES/11= .0/ > has some flaws or at least strange properties. >=20 > I wonder where to find the source code of the ISO 9660 producer > program. >=20 > ----------------------------------------------------------------- > Problematic properties in detail: >=20 > - The root directory entry and also "/." show as "Recording Date > and Time" the 7-byte string {165, ..., 165}, which except for the > first byte violates ECMA-119 9.1.5. It restricts bytes 1 to 5 to > reasonable values for month, day_of_month, hour, minute, second. > Byte 6 shall be in the range of -48 to +52, whereas 165 as > signed 8-byte value is -91. >=20 > - The Rock Ridge equipment of directory records of directories in > their parent directory differs from the equipment of "." records > in their own directory. > E.g. "/bin" differs from "/bin/." not only by name. > "/bin" has Rock Ridge entry TF, which gives timestamps. > (At 2048-block 842 + offset 584 bytes) > "/bin/." has no TF. > (At 2048-block 844 + offset 0) > The content of TF's Creation Time > {115 10, 1, 21, 36, 58, 0} > differs from the content of the ECMA-119 record fields > {115, 10, 1, 21, 38, 24, 0} >=20 > - The Rock Ridge TF entries have Creation Time rather than > Last Attribute Change Time. > RRIP-1.12 says: > "If recorded, CREATION, Creation Time, has the same meaning as in > ISO 9660:9.5.4." > "If recorded, ATTRIBUTES, Last Attribute Change Time, shall be > used for the st_ctime field of POSIX:5.6.1." > ECMA-119 (aka ISO 9660): > "9.5.4 File Creation Date and Time (BP 11 to 27) > This field shall specify the date and the time of the day at > which the information in the file was created." > So for recording ctime, the FreeBSD ISO uses the wrong TF field. >=20 > - Some files have Rock Ridge NM fields, some don't. > The NM field records the case sensitive long name of the file. > Having none makes the file name prone to mapping when it gets > shown by reader software. Typical mappings are: > - Removal of trailing ".;1" or ";1". > - Presentation as lowercase characters. > Missing are the NM fields of the directories in > /usr/share/i18n/csmapper > (At 2048-block 323995) > /usr/share/i18n/esdb > (At 2048-block 338174) > and of the directory "C" in > /usr/share/nls > (At 2048-block 353273) > The regular files in the same directories do have NM. >=20 >=20 > Have a nice day :) >=20 > Thomas >=20 > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"=
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