From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hubert Chan Subject: Re: silent semantic changes with reiser4 Date: Thu, 26 Aug 2004 13:14:29 -0400 Sender: news Message-ID: <87n00hq0sq.fsf@uhoreg.ca> References: <1453698131.20040826011935@tnonline.net> <20040825163225.4441cfdd.akpm@osdl.org> <20040825233739.GP10907@legion.cup.hp.com> <20040825234629.GF2612@wiggy.net> <1093480940.2748.35.camel@entropy> <20040826044425.GL5414@waste.org> <1093496948.2748.69.camel@entropy> <20040826053200.GU31237@waste.org> <20040826075348.GT1284@nysv.org> <20040826163234.GA9047@delft.aura.cs.cmu.edu> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com List-Id: Content-Type: text/plain; charset="iso-8859-1" To: reiserfs-list@namesys.com Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org >>>>> "Jan" =3D=3D Jan Harkes writes: Jan> On Thu, Aug 26, 2004 at 10:53:48AM +0300, Markus T=F6rnqvist wrote: [...] >> I for one would truly welcome the coming of thumbnails and >> descriptions in picture files, because I have a real-life project >> going on where that would be extremely handy to have in the actual >> file. Jan> Ehhh, that already exists and doesn't require meta-data streams, Jan> http://www.exif.org/ but then you need an extra library to access the exif data. You can't just do something like "display foo.jpg/exif/thumbnail". Or even better, "echo 'this is a comment' > foo.jpg/comment" to change the jpeg comment without an external program. And I don't think exif tags work with all image formats. >> On Thu, Aug 26, 2004 at 12:32:00AM -0500, Matt Mackall wrote: >> >Find some silly person with an iBook and open a shell on OS X. Use >> >cp to copy a file with a resource fork. Oh look, the Finder has no >> >idea what the new file is, even though it looks exactly identical in >> >the shell. Isn't that _wonderful_? Now try cat < a > b on a file >> >with a fork. How is that ever going to work? Under file-as-dir, it would not look the same under the shell if cp didn't copy everything -- the directory contents would be different. To copy the metadata as well, you would do something like "cp -r". Similarly with "cat < a > b". --=20 Hubert Chan - http://www.uhoreg.ca/ PGP/GnuPG key: 1024D/124B61FA Fingerprint: 96C5 012F 5F74 A5F7 1FF7 5291 AF29 C719 124B 61FA Key available at wwwkeys.pgp.net. Encrypted e-mail preferred. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hubert Chan Subject: Re: silent semantic changes with reiser4 Date: Thu, 26 Aug 2004 13:14:29 -0400 Sender: news Message-ID: <87n00hq0sq.fsf@uhoreg.ca> References: <1453698131.20040826011935@tnonline.net> <20040825163225.4441cfdd.akpm@osdl.org> <20040825233739.GP10907@legion.cup.hp.com> <20040825234629.GF2612@wiggy.net> <1093480940.2748.35.camel@entropy> <20040826044425.GL5414@waste.org> <1093496948.2748.69.camel@entropy> <20040826053200.GU31237@waste.org> <20040826075348.GT1284@nysv.org> <20040826163234.GA9047@delft.aura.cs.cmu.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Cc: linux-fsdevel@vger.kernel.org,linux-kernel@vger.kernel.org Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com To: reiserfs-list@namesys.com List-Id: linux-fsdevel.vger.kernel.org >>>>> "Jan" == Jan Harkes writes: Jan> On Thu, Aug 26, 2004 at 10:53:48AM +0300, Markus Törnqvist wrote: [...] >> I for one would truly welcome the coming of thumbnails and >> descriptions in picture files, because I have a real-life project >> going on where that would be extremely handy to have in the actual >> file. Jan> Ehhh, that already exists and doesn't require meta-data streams, Jan> http://www.exif.org/ but then you need an extra library to access the exif data. You can't just do something like "display foo.jpg/exif/thumbnail". Or even better, "echo 'this is a comment' > foo.jpg/comment" to change the jpeg comment without an external program. And I don't think exif tags work with all image formats. >> On Thu, Aug 26, 2004 at 12:32:00AM -0500, Matt Mackall wrote: >> >Find some silly person with an iBook and open a shell on OS X. Use >> >cp to copy a file with a resource fork. Oh look, the Finder has no >> >idea what the new file is, even though it looks exactly identical in >> >the shell. Isn't that _wonderful_? Now try cat < a > b on a file >> >with a fork. How is that ever going to work? Under file-as-dir, it would not look the same under the shell if cp didn't copy everything -- the directory contents would be different. To copy the metadata as well, you would do something like "cp -r". Similarly with "cat < a > b". -- Hubert Chan - http://www.uhoreg.ca/ PGP/GnuPG key: 1024D/124B61FA Fingerprint: 96C5 012F 5F74 A5F7 1FF7 5291 AF29 C719 124B 61FA Key available at wwwkeys.pgp.net. Encrypted e-mail preferred.