On Thu, 2 Mar 2000, Oleg Krivosheev wrote:
> On Thu, 2 Mar 2000 kmself@ix.netcom.com wrote:
>
> > > > Files and directories are identified under most Linux-like fileystems
> > > > (e2fs, minix fs, UFS, etc., but *not* msdos, vfat), by inodes. An inode
> > > > is essentially a database entry in a table giving storage location,
> > > > name, and values of several attributes (read/write/execute/suid), etc.
> > > ^^^^^^
> > >
> > > name? Files are nameless in UNIX. Read about hard links for example
> > > And from inode you should get storage, attirbutes, times (creation,
> > > access) and reference counter.
> >
> > lost+found inode is 11 for ext2fs. Do:
> >
> > ls -id /lost+found
>
> hmm...
>
> i thought there is no special inode for /lost+found. Any reason
> the inode should be special?
>
> > As I said, limited understand. You're right, file name is referenced
> > only in the directory entry itself, which links an inode to a name.
> > Renaming myself Luke and using the source shows the structures.
>
> ok
>
> >
> > I don't find the lost+found inode definition though. Anyone?
> >
> > **********************************
> > ** /usr/include/linux/ext2_fs.h **
> > **********************************
> > ------------------------------------------------------------------------
> >
> > [...]
> >
> > /*
> > * Special inodes numbers
> > */
> > #define EXT2_BAD_INO 1 /* Bad blocks inode */
> > #define EXT2_ROOT_INO 2 /* Root inode */
> > #define EXT2_ACL_IDX_INO 3 /* ACL inode */
> > #define EXT2_ACL_DATA_INO 4 /* ACL inode */
> > #define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
> > #define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
> >
> > /* First non-reserved inode for old ext2 filesystems */
> > #define EXT2_GOOD_OLD_FIRST_INO 11
>
> ah.. see? /lost+found is first free inode, nothing special. So you could
> just recreate it anytime you want
reply to myself - usually the reason to have special inode is when
you want "nameless" file - file without {name,inode} association in some
directory entry but with refcounter>0 and all other features.
/lost+found is named and should not require special inode
> i believe in ext3 (==ext+jounaling) journal inode would be special but too
> lazy to check
i told it is since 0.03
>
> regards
>
> OK
>
OK
