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Full Discussion: Directory Inode Number Not Unique
Top Forums UNIX for Dummies Questions & Answers Directory Inode Number Not Unique Post 72568 by Perderabo on Sunday 22nd of May 2005 08:00:41 AM
Old 05-22-2005
Links to directories happen a lot. Example:
Code:
$ mkdir tmp
$ cd tmp
$ mkdir a b c
$ ls -li .
total 0
278623 drwxr-xr-x   2 user        users           96 May 22 07:39 a
278624 drwxr-xr-x   2 user        users           96 May 22 07:39 b
278625 drwxr-xr-x   2 user        users           96 May 22 07:39 c
$ ls -lid .
278622 drwxr-xr-x   5 user        users           96 May 22 07:39 .

I just made this directory seconds ago, but it has 5 links. Why?
Code:
$ ls -lid ../tmp . a/.. b/.. c/..
278622 drwxr-xr-x   5 user        users           96 May 22 07:39 .
278622 drwxr-xr-x   5 user        users           96 May 22 07:39 ../tmp
278622 drwxr-xr-x   5 user        users           96 May 22 07:39 a/..
278622 drwxr-xr-x   5 user        users           96 May 22 07:39 b/..
278622 drwxr-xr-x   5 user        users           96 May 22 07:39 c/..
$

However . and .. should be the only hard links to directories. The ln command will not hardlink directories. But the link() system call will if it is invoked by root. Doing this can ruin the tree structure of a filesystem.
 

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bup-fuse

bup-fuse(1)						      General Commands Manual						       bup-fuse(1)

NAME

       bup-fuse - mount a bup repository as a filesystem

SYNOPSIS

       bup fuse [-d] [-f] [-o] <mountpoint>

DESCRIPTION

       bup fuse opens a bup repository and exports it as a fuse(7) userspace filesystem.

       This feature is only available on systems (such as Linux) which support FUSE.

       WARNING: bup fuse is still experimental and does not enforce any file permissions! All files will be readable by all users.

       When you're done accessing the mounted fuse filesystem, you should unmount it with umount(8).

OPTIONS

       -d, --debug
	      run in the foreground and print FUSE debug information for each request.

       -f, --foreground
	      run in the foreground and exit only when the filesystem is unmounted.

       -o, --allow-other
	      permit other users to access the filesystem.  Necessary for exporting the filesystem via Samba, for example.

EXAMPLE

	      rm -rf /tmp/buptest
	      mkdir /tmp/buptest
	      sudo bup fuse -d /tmp/buptest
	      ls /tmp/buptest/*/latest
	      ...
	      umount /tmp/buptest

SEE ALSO

       fuse(7), fusermount(1), bup-ls(1), bup-ftp(1), bup-restore(1), bup-web(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															       bup-fuse(1)
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