Sascha Lucas wrote: > Hi list, > > I like to try the "files as directorys" plugin. It is not a plugin ;) It is a set of concepts with similar semantics. One of them is so-called "pseudo-files" (or "metas"), a reiser4 extension that allows to access attributes of any regular file foo via the following construction : foo/..../bar (and, yes, chdir to foo/.... is possible). Unfortunately, this is deprecated because it allows to create incorrect constructions using hard links functionality. AFAIK, the problem is not yet resolved. There is a patch for pseudo-files extension against ~2.6.14 > Please tell me first if I > understand it right, what this can do: > > An often made example is /etc/passwd. If used with the "files as directorys" This is another concept which allows to aggregate various records in a handy manner as "subfiles" of a regular file. I even know that Hans discussed with R.M. Stallman, which found this possibility useful. Linus also likes this idea. There is a special technical thread in lkml devoted to this functionality opened by Al Viro: http://readlist.com/lists/vger.kernel.org/linux-kernel/7/39039.html > plugin then passwd is a directory and a file at the same time. You can chdir > into passwd and have i.e. each line in a separate file. Legacy apps can still > open passwd like a file as "normal"/before. > Yes, but this concept has not been worked out in details. I remember there were two approaches for the implementation: 1) as a directory, so that every record has a directory entry nature; 2) as a "symfile", so that every record has a symlink nature. > And now the question, why I can't verify this myself: > > $ /sbin/mkfs.reiser4 -o create=dir40 reiser4.img > /sbin/mkfs.reiser4 1.0.6 > Copyright (C) 2001-2005 by Hans Reiser, licensing governed by > reiser4progs/COPYING. > > Overriding the plugin profile by "create=dir40". > Error: Can't override profile slot "create" by the found plugin "dir40": a > plugin of the same type but of another group is found. > > Any hints for me what I'm doing wrong? "create" is a directory attribute (actually regular files also have it, but it makes sense for directory only). So this attribute specifies a plugin to manage _regular_ files created in the directory (the name "create" was chosen in conformity with the system call creat (2)). dir40 is a plugin, which manages directories, not a regular files. This explains mkfs complaints. Currently there are two plugins to manage regular files in reiser4: 1) unix-file plugin (reg40, default value) 2) cryptcompress plugin (ccreg40) . Edward. > Distro is gentoo with: > - gentoo-sources-2.6.25 and reiser4-patch from kernel.org/edward > - reiser4progs-1.0.6-r1 from gentoo-portage > > TIA Sascha. > -- > To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
